Optimized Cooperative QOS Enhanced Distributed Multipath Routing Protocol

The link failure is considered in this paper in order to guarantee reliable and continuous transmission of data. And to ensure that cooperative routing is done faster response and effective packet transmission. Cooperative communications are the most recent fields of research; they combine wireless channels’ link quality and broadcasting nature. So communication in ad hoc mobile networks only works properly if the participating nodes work together in routing and transmission. A flow is divided into batches of data packets. When they leave the source node every packet in the same batch has the same forwarder list. The underlying routing protocol used in this work is Proactive Source Routing (PSR), which provides each node with all other nodes on the network. The forwarder list therefore contains the identity of the path nodes from the source node to the location. Once packets progress through the network, forwarding nodes can amend the forwarder list when any changes in the network topology have been observed. In addition, some other nodes not listed as transmitting data may also be transmitted, which is called as small-scale retransmission.