Deprecated (16384): The ArrayAccess methods will be removed in 4.0.0.Use getParam(), getData() and getQuery() instead. - /home/brlfuser/public_html/src/Controller/ArtileDetailController.php, line: 73 You can disable deprecation warnings by setting `Error.errorLevel` to `E_ALL & ~E_USER_DEPRECATED` in your config/app.php. [CORE/src/Core/functions.php, line 311]Code Context
trigger_error($message, E_USER_DEPRECATED);
}
$message = 'The ArrayAccess methods will be removed in 4.0.0.Use getParam(), getData() and getQuery() instead. - /home/brlfuser/public_html/src/Controller/ArtileDetailController.php, line: 73 You can disable deprecation warnings by setting `Error.errorLevel` to `E_ALL & ~E_USER_DEPRECATED` in your config/app.php.' $stackFrame = (int) 1 $trace = [ (int) 0 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/ServerRequest.php', 'line' => (int) 2421, 'function' => 'deprecationWarning', 'args' => [ (int) 0 => 'The ArrayAccess methods will be removed in 4.0.0.Use getParam(), getData() and getQuery() instead.' ] ], (int) 1 => [ 'file' => '/home/brlfuser/public_html/src/Controller/ArtileDetailController.php', 'line' => (int) 73, 'function' => 'offsetGet', 'class' => 'Cake\Http\ServerRequest', 'object' => object(Cake\Http\ServerRequest) {}, 'type' => '->', 'args' => [ (int) 0 => 'catslug' ] ], (int) 2 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Controller/Controller.php', 'line' => (int) 610, 'function' => 'printArticle', 'class' => 'App\Controller\ArtileDetailController', 'object' => object(App\Controller\ArtileDetailController) {}, 'type' => '->', 'args' => [] ], (int) 3 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/ActionDispatcher.php', 'line' => (int) 120, 'function' => 'invokeAction', 'class' => 'Cake\Controller\Controller', 'object' => object(App\Controller\ArtileDetailController) {}, 'type' => '->', 'args' => [] ], (int) 4 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/ActionDispatcher.php', 'line' => (int) 94, 'function' => '_invoke', 'class' => 'Cake\Http\ActionDispatcher', 'object' => object(Cake\Http\ActionDispatcher) {}, 'type' => '->', 'args' => [ (int) 0 => object(App\Controller\ArtileDetailController) {} ] ], (int) 5 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/BaseApplication.php', 'line' => (int) 235, 'function' => 'dispatch', 'class' => 'Cake\Http\ActionDispatcher', 'object' => object(Cake\Http\ActionDispatcher) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 6 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 65, 'function' => '__invoke', 'class' => 'Cake\Http\BaseApplication', 'object' => object(App\Application) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {}, (int) 2 => object(Cake\Http\Runner) {} ] ], (int) 7 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Routing/Middleware/RoutingMiddleware.php', 'line' => (int) 162, 'function' => '__invoke', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 8 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 65, 'function' => '__invoke', 'class' => 'Cake\Routing\Middleware\RoutingMiddleware', 'object' => object(Cake\Routing\Middleware\RoutingMiddleware) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {}, (int) 2 => object(Cake\Http\Runner) {} ] ], (int) 9 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Routing/Middleware/AssetMiddleware.php', 'line' => (int) 88, 'function' => '__invoke', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 10 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 65, 'function' => '__invoke', 'class' => 'Cake\Routing\Middleware\AssetMiddleware', 'object' => object(Cake\Routing\Middleware\AssetMiddleware) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {}, (int) 2 => object(Cake\Http\Runner) {} ] ], (int) 11 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Error/Middleware/ErrorHandlerMiddleware.php', 'line' => (int) 96, 'function' => '__invoke', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 12 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 65, 'function' => '__invoke', 'class' => 'Cake\Error\Middleware\ErrorHandlerMiddleware', 'object' => object(Cake\Error\Middleware\ErrorHandlerMiddleware) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {}, (int) 2 => object(Cake\Http\Runner) {} ] ], (int) 13 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 51, 'function' => '__invoke', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 14 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Server.php', 'line' => (int) 98, 'function' => 'run', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\MiddlewareQueue) {}, (int) 1 => object(Cake\Http\ServerRequest) {}, (int) 2 => object(Cake\Http\Response) {} ] ], (int) 15 => [ 'file' => '/home/brlfuser/public_html/webroot/index.php', 'line' => (int) 39, 'function' => 'run', 'class' => 'Cake\Http\Server', 'object' => object(Cake\Http\Server) {}, 'type' => '->', 'args' => [] ] ] $frame = [ 'file' => '/home/brlfuser/public_html/src/Controller/ArtileDetailController.php', 'line' => (int) 73, 'function' => 'offsetGet', 'class' => 'Cake\Http\ServerRequest', 'object' => object(Cake\Http\ServerRequest) { trustProxy => false [protected] params => [ [maximum depth reached] ] [protected] data => [[maximum depth reached]] [protected] query => [[maximum depth reached]] [protected] cookies => [ [maximum depth reached] ] [protected] _environment => [ [maximum depth reached] ] [protected] url => 'disaster-management/iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823/print' [protected] base => '' [protected] webroot => '/' [protected] here => '/disaster-management/iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823/print' [protected] trustedProxies => [[maximum depth reached]] [protected] _input => null [protected] _detectors => [ [maximum depth reached] ] [protected] _detectorCache => [ [maximum depth reached] ] [protected] stream => object(Zend\Diactoros\PhpInputStream) {} [protected] uri => object(Zend\Diactoros\Uri) {} [protected] session => object(Cake\Http\Session) {} [protected] attributes => [[maximum depth reached]] [protected] emulatedAttributes => [ [maximum depth reached] ] [protected] uploadedFiles => [[maximum depth reached]] [protected] protocol => null [protected] requestTarget => null [private] deprecatedProperties => [ [maximum depth reached] ] }, 'type' => '->', 'args' => [ (int) 0 => 'catslug' ] ]deprecationWarning - CORE/src/Core/functions.php, line 311 Cake\Http\ServerRequest::offsetGet() - CORE/src/Http/ServerRequest.php, line 2421 App\Controller\ArtileDetailController::printArticle() - APP/Controller/ArtileDetailController.php, line 73 Cake\Controller\Controller::invokeAction() - CORE/src/Controller/Controller.php, line 610 Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 120 Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 94 Cake\Http\BaseApplication::__invoke() - CORE/src/Http/BaseApplication.php, line 235 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\RoutingMiddleware::__invoke() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 162 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\AssetMiddleware::__invoke() - CORE/src/Routing/Middleware/AssetMiddleware.php, line 88 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Error\Middleware\ErrorHandlerMiddleware::__invoke() - CORE/src/Error/Middleware/ErrorHandlerMiddleware.php, line 96 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Http\Runner::run() - CORE/src/Http/Runner.php, line 51 Cake\Http\Server::run() - CORE/src/Http/Server.php, line 98
Deprecated (16384): The ArrayAccess methods will be removed in 4.0.0.Use getParam(), getData() and getQuery() instead. - /home/brlfuser/public_html/src/Controller/ArtileDetailController.php, line: 74 You can disable deprecation warnings by setting `Error.errorLevel` to `E_ALL & ~E_USER_DEPRECATED` in your config/app.php. [CORE/src/Core/functions.php, line 311]Code Context
trigger_error($message, E_USER_DEPRECATED);
}
$message = 'The ArrayAccess methods will be removed in 4.0.0.Use getParam(), getData() and getQuery() instead. - /home/brlfuser/public_html/src/Controller/ArtileDetailController.php, line: 74 You can disable deprecation warnings by setting `Error.errorLevel` to `E_ALL & ~E_USER_DEPRECATED` in your config/app.php.' $stackFrame = (int) 1 $trace = [ (int) 0 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/ServerRequest.php', 'line' => (int) 2421, 'function' => 'deprecationWarning', 'args' => [ (int) 0 => 'The ArrayAccess methods will be removed in 4.0.0.Use getParam(), getData() and getQuery() instead.' ] ], (int) 1 => [ 'file' => '/home/brlfuser/public_html/src/Controller/ArtileDetailController.php', 'line' => (int) 74, 'function' => 'offsetGet', 'class' => 'Cake\Http\ServerRequest', 'object' => object(Cake\Http\ServerRequest) {}, 'type' => '->', 'args' => [ (int) 0 => 'artileslug' ] ], (int) 2 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Controller/Controller.php', 'line' => (int) 610, 'function' => 'printArticle', 'class' => 'App\Controller\ArtileDetailController', 'object' => object(App\Controller\ArtileDetailController) {}, 'type' => '->', 'args' => [] ], (int) 3 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/ActionDispatcher.php', 'line' => (int) 120, 'function' => 'invokeAction', 'class' => 'Cake\Controller\Controller', 'object' => object(App\Controller\ArtileDetailController) {}, 'type' => '->', 'args' => [] ], (int) 4 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/ActionDispatcher.php', 'line' => (int) 94, 'function' => '_invoke', 'class' => 'Cake\Http\ActionDispatcher', 'object' => object(Cake\Http\ActionDispatcher) {}, 'type' => '->', 'args' => [ (int) 0 => object(App\Controller\ArtileDetailController) {} ] ], (int) 5 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/BaseApplication.php', 'line' => (int) 235, 'function' => 'dispatch', 'class' => 'Cake\Http\ActionDispatcher', 'object' => object(Cake\Http\ActionDispatcher) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 6 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 65, 'function' => '__invoke', 'class' => 'Cake\Http\BaseApplication', 'object' => object(App\Application) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {}, (int) 2 => object(Cake\Http\Runner) {} ] ], (int) 7 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Routing/Middleware/RoutingMiddleware.php', 'line' => (int) 162, 'function' => '__invoke', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 8 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 65, 'function' => '__invoke', 'class' => 'Cake\Routing\Middleware\RoutingMiddleware', 'object' => object(Cake\Routing\Middleware\RoutingMiddleware) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {}, (int) 2 => object(Cake\Http\Runner) {} ] ], (int) 9 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Routing/Middleware/AssetMiddleware.php', 'line' => (int) 88, 'function' => '__invoke', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 10 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 65, 'function' => '__invoke', 'class' => 'Cake\Routing\Middleware\AssetMiddleware', 'object' => object(Cake\Routing\Middleware\AssetMiddleware) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {}, (int) 2 => object(Cake\Http\Runner) {} ] ], (int) 11 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Error/Middleware/ErrorHandlerMiddleware.php', 'line' => (int) 96, 'function' => '__invoke', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 12 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 65, 'function' => '__invoke', 'class' => 'Cake\Error\Middleware\ErrorHandlerMiddleware', 'object' => object(Cake\Error\Middleware\ErrorHandlerMiddleware) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {}, (int) 2 => object(Cake\Http\Runner) {} ] ], (int) 13 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Runner.php', 'line' => (int) 51, 'function' => '__invoke', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\ServerRequest) {}, (int) 1 => object(Cake\Http\Response) {} ] ], (int) 14 => [ 'file' => '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Http/Server.php', 'line' => (int) 98, 'function' => 'run', 'class' => 'Cake\Http\Runner', 'object' => object(Cake\Http\Runner) {}, 'type' => '->', 'args' => [ (int) 0 => object(Cake\Http\MiddlewareQueue) {}, (int) 1 => object(Cake\Http\ServerRequest) {}, (int) 2 => object(Cake\Http\Response) {} ] ], (int) 15 => [ 'file' => '/home/brlfuser/public_html/webroot/index.php', 'line' => (int) 39, 'function' => 'run', 'class' => 'Cake\Http\Server', 'object' => object(Cake\Http\Server) {}, 'type' => '->', 'args' => [] ] ] $frame = [ 'file' => '/home/brlfuser/public_html/src/Controller/ArtileDetailController.php', 'line' => (int) 74, 'function' => 'offsetGet', 'class' => 'Cake\Http\ServerRequest', 'object' => object(Cake\Http\ServerRequest) { trustProxy => false [protected] params => [ [maximum depth reached] ] [protected] data => [[maximum depth reached]] [protected] query => [[maximum depth reached]] [protected] cookies => [ [maximum depth reached] ] [protected] _environment => [ [maximum depth reached] ] [protected] url => 'disaster-management/iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823/print' [protected] base => '' [protected] webroot => '/' [protected] here => '/disaster-management/iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823/print' [protected] trustedProxies => [[maximum depth reached]] [protected] _input => null [protected] _detectors => [ [maximum depth reached] ] [protected] _detectorCache => [ [maximum depth reached] ] [protected] stream => object(Zend\Diactoros\PhpInputStream) {} [protected] uri => object(Zend\Diactoros\Uri) {} [protected] session => object(Cake\Http\Session) {} [protected] attributes => [[maximum depth reached]] [protected] emulatedAttributes => [ [maximum depth reached] ] [protected] uploadedFiles => [[maximum depth reached]] [protected] protocol => null [protected] requestTarget => null [private] deprecatedProperties => [ [maximum depth reached] ] }, 'type' => '->', 'args' => [ (int) 0 => 'artileslug' ] ]deprecationWarning - CORE/src/Core/functions.php, line 311 Cake\Http\ServerRequest::offsetGet() - CORE/src/Http/ServerRequest.php, line 2421 App\Controller\ArtileDetailController::printArticle() - APP/Controller/ArtileDetailController.php, line 74 Cake\Controller\Controller::invokeAction() - CORE/src/Controller/Controller.php, line 610 Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 120 Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 94 Cake\Http\BaseApplication::__invoke() - CORE/src/Http/BaseApplication.php, line 235 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\RoutingMiddleware::__invoke() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 162 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\AssetMiddleware::__invoke() - CORE/src/Routing/Middleware/AssetMiddleware.php, line 88 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Error\Middleware\ErrorHandlerMiddleware::__invoke() - CORE/src/Error/Middleware/ErrorHandlerMiddleware.php, line 96 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Http\Runner::run() - CORE/src/Http/Runner.php, line 51 Cake\Http\Server::run() - CORE/src/Http/Server.php, line 98
Warning (512): Unable to emit headers. Headers sent in file=/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Error/Debugger.php line=853 [CORE/src/Http/ResponseEmitter.php, line 48]Code Contextif (Configure::read('debug')) {
trigger_error($message, E_USER_WARNING);
} else {
$response = object(Cake\Http\Response) { 'status' => (int) 200, 'contentType' => 'text/html', 'headers' => [ 'Content-Type' => [ [maximum depth reached] ] ], 'file' => null, 'fileRange' => [], 'cookies' => object(Cake\Http\Cookie\CookieCollection) {}, 'cacheDirectives' => [], 'body' => '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <link rel="canonical" href="https://im4change.in/<pre class="cake-error"><a href="javascript:void(0);" onclick="document.getElementById('cakeErr67ed39baab112-trace').style.display = (document.getElementById('cakeErr67ed39baab112-trace').style.display == 'none' ? '' : 'none');"><b>Notice</b> (8)</a>: Undefined variable: urlPrefix [<b>APP/Template/Layout/printlayout.ctp</b>, line <b>8</b>]<div id="cakeErr67ed39baab112-trace" class="cake-stack-trace" style="display: none;"><a href="javascript:void(0);" onclick="document.getElementById('cakeErr67ed39baab112-code').style.display = (document.getElementById('cakeErr67ed39baab112-code').style.display == 'none' ? '' : 'none')">Code</a> <a href="javascript:void(0);" onclick="document.getElementById('cakeErr67ed39baab112-context').style.display = (document.getElementById('cakeErr67ed39baab112-context').style.display == 'none' ? '' : 'none')">Context</a><pre id="cakeErr67ed39baab112-code" class="cake-code-dump" style="display: none;"><code><span style="color: #000000"><span style="color: #0000BB"></span><span style="color: #007700"><</span><span style="color: #0000BB">head</span><span style="color: #007700">> </span></span></code> <span class="code-highlight"><code><span style="color: #000000"> <link rel="canonical" href="<span style="color: #0000BB"><?php </span><span style="color: #007700">echo </span><span style="color: #0000BB">Configure</span><span style="color: #007700">::</span><span style="color: #0000BB">read</span><span style="color: #007700">(</span><span style="color: #DD0000">'SITE_URL'</span><span style="color: #007700">); </span><span style="color: #0000BB">?><?php </span><span style="color: #007700">echo </span><span style="color: #0000BB">$urlPrefix</span><span style="color: #007700">;</span><span style="color: #0000BB">?><?php </span><span style="color: #007700">echo </span><span style="color: #0000BB">$article_current</span><span style="color: #007700">-></span><span style="color: #0000BB">category</span><span style="color: #007700">-></span><span style="color: #0000BB">slug</span><span style="color: #007700">; </span><span style="color: #0000BB">?></span>/<span style="color: #0000BB"><?php </span><span style="color: #007700">echo </span><span style="color: #0000BB">$article_current</span><span style="color: #007700">-></span><span style="color: #0000BB">seo_url</span><span style="color: #007700">; </span><span style="color: #0000BB">?></span>.html"/> </span></code></span> <code><span style="color: #000000"><span style="color: #0000BB"> </span><span style="color: #007700"><</span><span style="color: #0000BB">meta http</span><span style="color: #007700">-</span><span style="color: #0000BB">equiv</span><span style="color: #007700">=</span><span style="color: #DD0000">"Content-Type" </span><span style="color: #0000BB">content</span><span style="color: #007700">=</span><span style="color: #DD0000">"text/html; charset=utf-8"</span><span style="color: #007700">/> </span></span></code></pre><pre id="cakeErr67ed39baab112-context" class="cake-context" style="display: none;">$viewFile = '/home/brlfuser/public_html/src/Template/Layout/printlayout.ctp' $dataForView = [ 'article_current' => object(App\Model\Entity\Article) { 'id' => (int) 32744, 'title' => 'IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan', 'subheading' => '', 'description' => '<div align="justify"> -The Hindu<br /> <br /> One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /> <br /> In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /> <br /> The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /> <br /> The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /> <br /> At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /> <br /> Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /> <br /> This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /> <br /> Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /> <br /> &ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal. </div> <div align="justify"> &nbsp; </div> <div align="justify"> <em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /> </div>', 'credit_writer' => 'The Hindu, 17 December, 2016, http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true', 'article_img' => '', 'article_img_thumb' => '', 'status' => (int) 1, 'show_on_home' => (int) 1, 'lang' => 'EN', 'category_id' => (int) 26, 'tag_keyword' => '', 'seo_url' => 'iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823', 'meta_title' => null, 'meta_keywords' => null, 'meta_description' => null, 'noindex' => (int) 0, 'publish_date' => object(Cake\I18n\FrozenDate) {}, 'most_visit_section_id' => null, 'article_big_img' => null, 'liveid' => (int) 4680823, 'created' => object(Cake\I18n\FrozenTime) {}, 'modified' => object(Cake\I18n\FrozenTime) {}, 'edate' => '', 'tags' => [ [maximum depth reached] ], 'category' => object(App\Model\Entity\Category) {}, '[new]' => false, '[accessible]' => [ [maximum depth reached] ], '[dirty]' => [[maximum depth reached]], '[original]' => [[maximum depth reached]], '[virtual]' => [[maximum depth reached]], '[hasErrors]' => false, '[errors]' => [[maximum depth reached]], '[invalid]' => [[maximum depth reached]], '[repository]' => 'Articles' }, 'articleid' => (int) 32744, 'metaTitle' => 'Disaster Management | IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan', 'metaKeywords' => 'Disaster Management,communication network,DISANET,Technology', 'metaDesc' => ' -The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is...', 'disp' => '<div align="justify">-The Hindu<br /><br />One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />&ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal.</div><div align="justify">&nbsp;</div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div>', 'lang' => 'English', 'SITE_URL' => 'https://im4change.in/', 'site_title' => 'im4change', 'adminprix' => 'admin' ] $article_current = object(App\Model\Entity\Article) { 'id' => (int) 32744, 'title' => 'IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan', 'subheading' => '', 'description' => '<div align="justify"> -The Hindu<br /> <br /> One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /> <br /> In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /> <br /> The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /> <br /> The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /> <br /> At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /> <br /> Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /> <br /> This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /> <br /> Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /> <br /> &ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal. </div> <div align="justify"> &nbsp; </div> <div align="justify"> <em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /> </div>', 'credit_writer' => 'The Hindu, 17 December, 2016, http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true', 'article_img' => '', 'article_img_thumb' => '', 'status' => (int) 1, 'show_on_home' => (int) 1, 'lang' => 'EN', 'category_id' => (int) 26, 'tag_keyword' => '', 'seo_url' => 'iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823', 'meta_title' => null, 'meta_keywords' => null, 'meta_description' => null, 'noindex' => (int) 0, 'publish_date' => object(Cake\I18n\FrozenDate) {}, 'most_visit_section_id' => null, 'article_big_img' => null, 'liveid' => (int) 4680823, 'created' => object(Cake\I18n\FrozenTime) {}, 'modified' => object(Cake\I18n\FrozenTime) {}, 'edate' => '', 'tags' => [ (int) 0 => object(Cake\ORM\Entity) {}, (int) 1 => object(Cake\ORM\Entity) {}, (int) 2 => object(Cake\ORM\Entity) {}, (int) 3 => object(Cake\ORM\Entity) {} ], 'category' => object(App\Model\Entity\Category) {}, '[new]' => false, '[accessible]' => [ '*' => true, 'id' => false ], '[dirty]' => [], '[original]' => [], '[virtual]' => [], '[hasErrors]' => false, '[errors]' => [], '[invalid]' => [], '[repository]' => 'Articles' } $articleid = (int) 32744 $metaTitle = 'Disaster Management | IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan' $metaKeywords = 'Disaster Management,communication network,DISANET,Technology' $metaDesc = ' -The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is...' $disp = '<div align="justify">-The Hindu<br /><br />One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />&ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal.</div><div align="justify">&nbsp;</div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div>' $lang = 'English' $SITE_URL = 'https://im4change.in/' $site_title = 'im4change' $adminprix = 'admin'</pre><pre class="stack-trace">include - APP/Template/Layout/printlayout.ctp, line 8 Cake\View\View::_evaluate() - CORE/src/View/View.php, line 1413 Cake\View\View::_render() - CORE/src/View/View.php, line 1374 Cake\View\View::renderLayout() - CORE/src/View/View.php, line 927 Cake\View\View::render() - CORE/src/View/View.php, line 885 Cake\Controller\Controller::render() - CORE/src/Controller/Controller.php, line 791 Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 126 Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 94 Cake\Http\BaseApplication::__invoke() - CORE/src/Http/BaseApplication.php, line 235 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\RoutingMiddleware::__invoke() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 162 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\AssetMiddleware::__invoke() - CORE/src/Routing/Middleware/AssetMiddleware.php, line 88 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Error\Middleware\ErrorHandlerMiddleware::__invoke() - CORE/src/Error/Middleware/ErrorHandlerMiddleware.php, line 96 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Http\Runner::run() - CORE/src/Http/Runner.php, line 51</pre></div></pre>disaster-management/iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823.html"/> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <link href="https://im4change.in/css/control.css" rel="stylesheet" type="text/css" media="all"/> <title>Disaster Management | IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan | Im4change.org</title> <meta name="description" content=" -The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is..."/> <script src="https://im4change.in/js/jquery-1.10.2.js"></script> <script type="text/javascript" src="https://im4change.in/js/jquery-migrate.min.js"></script> <script language="javascript" type="text/javascript"> $(document).ready(function () { var img = $("img")[0]; // Get my img elem var pic_real_width, pic_real_height; $("<img/>") // Make in memory copy of image to avoid css issues .attr("src", $(img).attr("src")) .load(function () { pic_real_width = this.width; // Note: $(this).width() will not pic_real_height = this.height; // work for in memory images. }); }); </script> <style type="text/css"> @media screen { div.divFooter { display: block; } } @media print { .printbutton { display: none !important; } } </style> </head> <body> <table cellpadding="0" cellspacing="0" border="0" width="98%" align="center"> <tr> <td class="top_bg"> <div class="divFooter"> <img src="https://im4change.in/images/logo1.jpg" height="59" border="0" alt="Resource centre on India's rural distress" style="padding-top:14px;"/> </div> </td> </tr> <tr> <td id="topspace"> </td> </tr> <tr id="topspace"> <td> </td> </tr> <tr> <td height="50" style="border-bottom:1px solid #000; padding-top:10px;" class="printbutton"> <form><input type="button" value=" Print this page " onclick="window.print();return false;"/></form> </td> </tr> <tr> <td width="100%"> <h1 class="news_headlines" style="font-style:normal"> <strong>IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan</strong></h1> </td> </tr> <tr> <td width="100%" style="font-family:Arial, 'Segoe Script', 'Segoe UI', sans-serif, serif"><font size="3"> <div align="justify">-The Hindu<br /><br />One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as “I am safe” or basic information – name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems — WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). “VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them… Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,” says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved – instead of balloons, drones are being tested. “We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences ‘congestion’ and the police need another line of communication,” says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />“We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,” says Dr Jalihal.</div><div align="justify"> </div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div> </font> </td> </tr> <tr> <td> </td> </tr> <tr> <td height="50" style="border-top:1px solid #000; border-bottom:1px solid #000;padding-top:10px;"> <form><input type="button" value=" Print this page " onclick="window.print();return false;"/></form> </td> </tr> </table></body> </html>' } $maxBufferLength = (int) 8192 $file = '/home/brlfuser/public_html/vendor/cakephp/cakephp/src/Error/Debugger.php' $line = (int) 853 $message = 'Unable to emit headers. 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In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /> <br /> In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /> <br /> The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /> <br /> The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /> <br /> At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /> <br /> Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /> <br /> This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /> <br /> Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /> <br /> &ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal. </div> <div align="justify"> &nbsp; </div> <div align="justify"> <em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /> </div>', 'credit_writer' => 'The Hindu, 17 December, 2016, http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true', 'article_img' => '', 'article_img_thumb' => '', 'status' => (int) 1, 'show_on_home' => (int) 1, 'lang' => 'EN', 'category_id' => (int) 26, 'tag_keyword' => '', 'seo_url' => 'iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823', 'meta_title' => null, 'meta_keywords' => null, 'meta_description' => null, 'noindex' => (int) 0, 'publish_date' => object(Cake\I18n\FrozenDate) {}, 'most_visit_section_id' => null, 'article_big_img' => null, 'liveid' => (int) 4680823, 'created' => object(Cake\I18n\FrozenTime) {}, 'modified' => object(Cake\I18n\FrozenTime) {}, 'edate' => '', 'tags' => [ [maximum depth reached] ], 'category' => object(App\Model\Entity\Category) {}, '[new]' => false, '[accessible]' => [ [maximum depth reached] ], '[dirty]' => [[maximum depth reached]], '[original]' => [[maximum depth reached]], '[virtual]' => [[maximum depth reached]], '[hasErrors]' => false, '[errors]' => [[maximum depth reached]], '[invalid]' => [[maximum depth reached]], '[repository]' => 'Articles' }, 'articleid' => (int) 32744, 'metaTitle' => 'Disaster Management | IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan', 'metaKeywords' => 'Disaster Management,communication network,DISANET,Technology', 'metaDesc' => ' -The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is...', 'disp' => '<div align="justify">-The Hindu<br /><br />One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />&ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal.</div><div align="justify">&nbsp;</div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div>', 'lang' => 'English', 'SITE_URL' => 'https://im4change.in/', 'site_title' => 'im4change', 'adminprix' => 'admin' ] $article_current = object(App\Model\Entity\Article) { 'id' => (int) 32744, 'title' => 'IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan', 'subheading' => '', 'description' => '<div align="justify"> -The Hindu<br /> <br /> One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /> <br /> In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /> <br /> The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /> <br /> The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /> <br /> At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /> <br /> Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /> <br /> This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /> <br /> Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /> <br /> &ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal. </div> <div align="justify"> &nbsp; </div> <div align="justify"> <em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /> </div>', 'credit_writer' => 'The Hindu, 17 December, 2016, http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true', 'article_img' => '', 'article_img_thumb' => '', 'status' => (int) 1, 'show_on_home' => (int) 1, 'lang' => 'EN', 'category_id' => (int) 26, 'tag_keyword' => '', 'seo_url' => 'iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823', 'meta_title' => null, 'meta_keywords' => null, 'meta_description' => null, 'noindex' => (int) 0, 'publish_date' => object(Cake\I18n\FrozenDate) {}, 'most_visit_section_id' => null, 'article_big_img' => null, 'liveid' => (int) 4680823, 'created' => object(Cake\I18n\FrozenTime) {}, 'modified' => object(Cake\I18n\FrozenTime) {}, 'edate' => '', 'tags' => [ (int) 0 => object(Cake\ORM\Entity) {}, (int) 1 => object(Cake\ORM\Entity) {}, (int) 2 => object(Cake\ORM\Entity) {}, (int) 3 => object(Cake\ORM\Entity) {} ], 'category' => object(App\Model\Entity\Category) {}, '[new]' => false, '[accessible]' => [ '*' => true, 'id' => false ], '[dirty]' => [], '[original]' => [], '[virtual]' => [], '[hasErrors]' => false, '[errors]' => [], '[invalid]' => [], '[repository]' => 'Articles' } $articleid = (int) 32744 $metaTitle = 'Disaster Management | IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan' $metaKeywords = 'Disaster Management,communication network,DISANET,Technology' $metaDesc = ' -The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is...' $disp = '<div align="justify">-The Hindu<br /><br />One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />&ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal.</div><div align="justify">&nbsp;</div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div>' $lang = 'English' $SITE_URL = 'https://im4change.in/' $site_title = 'im4change' $adminprix = 'admin'</pre><pre class="stack-trace">include - APP/Template/Layout/printlayout.ctp, line 8 Cake\View\View::_evaluate() - CORE/src/View/View.php, line 1413 Cake\View\View::_render() - CORE/src/View/View.php, line 1374 Cake\View\View::renderLayout() - CORE/src/View/View.php, line 927 Cake\View\View::render() - CORE/src/View/View.php, line 885 Cake\Controller\Controller::render() - CORE/src/Controller/Controller.php, line 791 Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 126 Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 94 Cake\Http\BaseApplication::__invoke() - CORE/src/Http/BaseApplication.php, line 235 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\RoutingMiddleware::__invoke() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 162 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\AssetMiddleware::__invoke() - CORE/src/Routing/Middleware/AssetMiddleware.php, line 88 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Error\Middleware\ErrorHandlerMiddleware::__invoke() - CORE/src/Error/Middleware/ErrorHandlerMiddleware.php, line 96 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Http\Runner::run() - CORE/src/Http/Runner.php, line 51</pre></div></pre>disaster-management/iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823.html"/> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <link href="https://im4change.in/css/control.css" rel="stylesheet" type="text/css" media="all"/> <title>Disaster Management | IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan | Im4change.org</title> <meta name="description" content=" -The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. 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In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as “I am safe” or basic information – name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems — WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). “VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them… Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,” says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved – instead of balloons, drones are being tested. “We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences ‘congestion’ and the police need another line of communication,” says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />“We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,” says Dr Jalihal.</div><div align="justify"> </div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div> </font> </td> </tr> <tr> <td> </td> </tr> <tr> <td height="50" style="border-top:1px solid #000; border-bottom:1px solid #000;padding-top:10px;"> <form><input type="button" value=" Print this page " onclick="window.print();return false;"/></form> </td> </tr> </table></body> </html>' } $reasonPhrase = 'OK'header - [internal], line ?? 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In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /> <br /> In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /> <br /> The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /> <br /> The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /> <br /> At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /> <br /> Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /> <br /> This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /> <br /> Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /> <br /> &ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal. </div> <div align="justify"> &nbsp; </div> <div align="justify"> <em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /> </div>', 'credit_writer' => 'The Hindu, 17 December, 2016, http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true', 'article_img' => '', 'article_img_thumb' => '', 'status' => (int) 1, 'show_on_home' => (int) 1, 'lang' => 'EN', 'category_id' => (int) 26, 'tag_keyword' => '', 'seo_url' => 'iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823', 'meta_title' => null, 'meta_keywords' => null, 'meta_description' => null, 'noindex' => (int) 0, 'publish_date' => object(Cake\I18n\FrozenDate) {}, 'most_visit_section_id' => null, 'article_big_img' => null, 'liveid' => (int) 4680823, 'created' => object(Cake\I18n\FrozenTime) {}, 'modified' => object(Cake\I18n\FrozenTime) {}, 'edate' => '', 'tags' => [ [maximum depth reached] ], 'category' => object(App\Model\Entity\Category) {}, '[new]' => false, '[accessible]' => [ [maximum depth reached] ], '[dirty]' => [[maximum depth reached]], '[original]' => [[maximum depth reached]], '[virtual]' => [[maximum depth reached]], '[hasErrors]' => false, '[errors]' => [[maximum depth reached]], '[invalid]' => [[maximum depth reached]], '[repository]' => 'Articles' }, 'articleid' => (int) 32744, 'metaTitle' => 'Disaster Management | IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan', 'metaKeywords' => 'Disaster Management,communication network,DISANET,Technology', 'metaDesc' => ' -The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. 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The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. 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In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is...' $disp = '<div align="justify">-The Hindu<br /><br />One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as &ldquo;I am safe&rdquo; or basic information &ndash; name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems &mdash; WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). &ldquo;VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them&hellip; Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,&rdquo; says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved &ndash; instead of balloons, drones are being tested. &ldquo;We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences &lsquo;congestion&rsquo; and the police need another line of communication,&rdquo; says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />&ldquo;We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,&rdquo; says Dr Jalihal.</div><div align="justify">&nbsp;</div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div>' $lang = 'English' $SITE_URL = 'https://im4change.in/' $site_title = 'im4change' $adminprix = 'admin'</pre><pre class="stack-trace">include - APP/Template/Layout/printlayout.ctp, line 8 Cake\View\View::_evaluate() - CORE/src/View/View.php, line 1413 Cake\View\View::_render() - CORE/src/View/View.php, line 1374 Cake\View\View::renderLayout() - CORE/src/View/View.php, line 927 Cake\View\View::render() - CORE/src/View/View.php, line 885 Cake\Controller\Controller::render() - CORE/src/Controller/Controller.php, line 791 Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 126 Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 94 Cake\Http\BaseApplication::__invoke() - CORE/src/Http/BaseApplication.php, line 235 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\RoutingMiddleware::__invoke() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 162 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Routing\Middleware\AssetMiddleware::__invoke() - CORE/src/Routing/Middleware/AssetMiddleware.php, line 88 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Error\Middleware\ErrorHandlerMiddleware::__invoke() - CORE/src/Error/Middleware/ErrorHandlerMiddleware.php, line 96 Cake\Http\Runner::__invoke() - CORE/src/Http/Runner.php, line 65 Cake\Http\Runner::run() - CORE/src/Http/Runner.php, line 51</pre></div></pre>disaster-management/iit-madras-group-develops-alternative-system-for-communication-during-disasters-shubashree-desikan-4680823.html"/> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/> <link href="https://im4change.in/css/control.css" rel="stylesheet" type="text/css" media="all"/> <title>Disaster Management | IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan | Im4change.org</title> <meta name="description" content=" -The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is..."/> <script src="https://im4change.in/js/jquery-1.10.2.js"></script> <script type="text/javascript" src="https://im4change.in/js/jquery-migrate.min.js"></script> <script language="javascript" type="text/javascript"> $(document).ready(function () { var img = $("img")[0]; // Get my img elem var pic_real_width, pic_real_height; $("<img/>") // Make in memory copy of image to avoid css issues .attr("src", $(img).attr("src")) .load(function () { pic_real_width = this.width; // Note: $(this).width() will not pic_real_height = this.height; // work for in memory images. }); }); </script> <style type="text/css"> @media screen { div.divFooter { display: block; } } @media print { .printbutton { display: none !important; } } </style> </head> <body> <table cellpadding="0" cellspacing="0" border="0" width="98%" align="center"> <tr> <td class="top_bg"> <div class="divFooter"> <img src="https://im4change.in/images/logo1.jpg" height="59" border="0" alt="Resource centre on India's rural distress" style="padding-top:14px;"/> </div> </td> </tr> <tr> <td id="topspace"> </td> </tr> <tr id="topspace"> <td> </td> </tr> <tr> <td height="50" style="border-bottom:1px solid #000; padding-top:10px;" class="printbutton"> <form><input type="button" value=" Print this page " onclick="window.print();return false;"/></form> </td> </tr> <tr> <td width="100%"> <h1 class="news_headlines" style="font-style:normal"> <strong>IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan</strong></h1> </td> </tr> <tr> <td width="100%" style="font-family:Arial, 'Segoe Script', 'Segoe UI', sans-serif, serif"><font size="3"> <div align="justify">-The Hindu<br /><br />One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as “I am safe” or basic information – name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems — WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). “VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them… Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,” says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved – instead of balloons, drones are being tested. “We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences ‘congestion’ and the police need another line of communication,” says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />“We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,” says Dr Jalihal.</div><div align="justify"> </div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div> </font> </td> </tr> <tr> <td> </td> </tr> <tr> <td height="50" style="border-top:1px solid #000; border-bottom:1px solid #000;padding-top:10px;"> <form><input type="button" value=" Print this page " onclick="window.print();return false;"/></form> </td> </tr> </table></body> </html>' } $cookies = [] $values = [ (int) 0 => 'text/html; charset=UTF-8' ] $name = 'Content-Type' $first = true $value = 'text/html; charset=UTF-8'header - [internal], line ?? 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In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /> <br /> In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /> <br /> The plan is also to enable citizens within the reach of this system to communicate essential messages, such as “I am safe” or basic information – name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /> <br /> The design has four subsystems — WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /> <br /> At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). “VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them… Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,” says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /> <br /> Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /> <br /> This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved – instead of balloons, drones are being tested. “We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences ‘congestion’ and the police need another line of communication,” says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /> <br /> Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. 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So the police are very selective of who gets to use them… Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,” says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. 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This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />“We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,” says Dr Jalihal.</div><div align="justify"> </div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div>', 'lang' => 'English', 'SITE_URL' => 'https://im4change.in/', 'site_title' => 'im4change', 'adminprix' => 'admin' ] $article_current = object(App\Model\Entity\Article) { 'id' => (int) 32744, 'title' => 'IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan', 'subheading' => '', 'description' => '<div align="justify"> -The Hindu<br /> <br /> One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /> <br /> In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /> <br /> The plan is also to enable citizens within the reach of this system to communicate essential messages, such as “I am safe” or basic information – name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. 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In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is...' $disp = '<div align="justify">-The Hindu<br /><br />One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority.<br /><br />In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi.<br /><br />The plan is also to enable citizens within the reach of this system to communicate essential messages, such as “I am safe” or basic information – name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA.<br /><br />The design has four subsystems — WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres.<br /><br />At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). “VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them… Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,” says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system.<br /><br />Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres.<br /><br />This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved – instead of balloons, drones are being tested. “We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences ‘congestion’ and the police need another line of communication,” says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication.<br /><br />Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster.<br /><br />“We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,” says Dr Jalihal.</div><div align="justify"> </div><div align="justify"><em>The Hindu, 17 December, 2016, please <a href="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true" title="http://www.thehindu.com/sci-tech/science/IIT-Madras-group-develops-alternative-system-for-communication-during-disasters/article16896263.ece?homepage=true">click here</a> to access </em><br /></div>' $lang = 'English' $SITE_URL = 'https://im4change.in/' $site_title = 'im4change' $adminprix = 'admin'
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IIT Madras group develops alternative system for communication during disasters -Shubashree Desikan |
-The Hindu One of the first things to get affected during natural disasters and accidents is the communication network. In a country where over a billion use mobile phones, providing mobile connectivity during a disaster, at least for emergency usage, is a priority. In this context, an IIT Madras team is developing a low-cost communication system that can enable rescue workers to communicate with a locally established centre and, through this centre, to the National Disaster Management Agency (NDMA) in Delhi. The plan is also to enable citizens within the reach of this system to communicate essential messages, such as “I am safe” or basic information – name, age, gender, etc, of persons discovered. The whole system is compatible with basic model mobile phones, as most users in India do not own smart phones. The system, named DISANET, allows basic services such as voice, text and video communications to be exchanged within this network of rescue workers, Master Operation Centre and the NDMA. The design has four subsystems — WiFi, a satellite link, single-carrier GSM and LTE (Long Term Evolution) which is a standard for high-speed wireless communication for mobile phones and data terminals. The compact system can be easily transported in trucks to the site of the Master Operation Centre within a few hours of the disaster. The wireless system should provide coverage over an area of approximately 1,000 square kilometres. At present, people who are involved in rescue operations, such as police personnel, use walkie/talkie handsets (VHF/UHF). “VHF/UHF handsets are expensive, costing anywhere up to a couple of lakhs of rupees. So the police are very selective of who gets to use them… Much of the police force depends on GSM for its communication needs, and they are subject to all the disruptions that affect GSM network,” says Devendra Jalihal of the Electrical Engineering department of IIT, who along with David Koilpillai, also from the same department, is developing this system. Rescue workers with GSM handsets, WiFi cameras and WiFi nodes can spread out over an area of 12-25 square kilometre to form the primary deployment area. These workers supply communication between the affected area and the Master Operation Centre (MOC). The MOC has pico- or micro-sized LTE-Base Stations which are mounted at a height of 15 to 20 metres. This is achieved by a tethered-balloon that is inflated and hoisted at the MOC. But this system is being improved – instead of balloons, drones are being tested. “We tested a variant of this during Mahamaham [festival] at Kumbakonam in February, this year, for Tamil Nadu Police. Police personnel with smart phones could initiate and receive calls using WiFi channels. We are proposing this kind of system whenever there is a large gathering, as the GSM network experiences ‘congestion’ and the police need another line of communication,” says Dr Jalihal. The architecture, which mainly supports usage by rescue workers, can be extended to allow citizen victims to send short SMSs communication. Also, the rescue team can directly communicate with citizens about the arrangements using FM broadcast, which citizens receive on their mobiles. This enables the flow of authenticated information from the authorities to the citizens and prevents rumour-mongering during times of disaster. “We are now trying to build a GSM network with low cost hardware and open source software and hope to test it in the next couple of months,” says Dr Jalihal. The Hindu, 17 December, 2016, please click here to access
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