Improving Converge Casting Process in Collection Tree Protocol(CTP)

Abstract

Many wireless sensor network applications, they rely on collection service to route the data to the sink. The Collection Tree Protocol is one of the best anycast tree based protocol used for data collection. It selects one of the trees to root having minimum cost routing gradient. Network lifetime is one of the major factors that have to be taken in to consideration for choosing the routing protocol. CTP used Expected Transmission ratio (ETX) metric for tree construction. It shows the total transmissions needed to send a packet to destination whose acknowledgment is received successfully. To improve converge-casting of CTP energy constrain and recovery bit is added into existing CTP. A new factor quality of forwarding (QoF) is also used to calculate for deciding the route to the sink. With that higher throughput and improvement in the lifetime of the tree was observed. The improved tree construction procedure has been implemented and simulation results are analyzed using metrics: No of packets received, Duplicate packets and Energy consumed.