Coordinator Node-based Collection Tree Protocol for Wireless Sensor Networks

Routing protocol in Wireless Sensor Network (WSN) poses lots of challenges in today’s research world. In most of the applications we need to maintain reliability, efficiency, scalability. In this context we have evaluated the performance of Collection Tree Protocol (CTP) for WSN applications and examined that CTP performs poorly in case of data delivery most of the times due to path inconsistency factors like routing loop generation, dynamic links, etc. Hence the problem of route discovery in CTP leads to retransmission, packet dropping etc. This finally results in poor data delivery rate of that application. Therefore a coordinator based approach along with the basic CTP mechanism is proposed and analyzed here. In mobile scenario the CTP protocol faces challenges in route discovery and maintenance of the route towards the particular sink. Therefore the coordinator based approach allows a node to reliably send data to its particular sink and maintain the route history for the rest of the session.