Sequence-number aided timer based DSR protocol in MANET: TDSR

A Mobile Ad-Hoc Network (MANET) is a self-configuring and a temporary dynamic network of mobile nodes connected by wireless links without any fixed infrastructure. Among the two broad categories of Routing Protocols, We have tried to include more clarity to the Route Discovery Phase of DSR Protocol. We have modified the Request Packet Format, by introducing the “Timer” field. When the Route Reply is not received within the given time duration mentioned in the Timer Field, the Source will again initiate new Request for the same Destination with increased Request Number and increased Timer. It is observed that Cache Maintenance of TDSR is much easier than DSR. As, DSR circulate Stale Route information throughout the network, whereas TDSR prevent spreading of Stale Route information and Speed up the Route Discovery Process, which also leads to increased Packet Delivery Ratio and Reduced Bandwidth Requirement due to partial Route Construction during Reply Phase.