A novel cooperative routing algorithm based on cross-layer relay selection

Cooperative routing technology can achieve distinct performance gain by selecting suitable relays to forward data. Latency is a important performance of MANET. In this paper, we propose a novel cooperative routing algorithm based on relay selection strategy, where the broadcasting routing packets on potential relays are exploited to collect the channel state information (CSI). Then a distributed algorithm is taken to select the “best” relay from a set of potential relays with which a cooperative routing protocol is presented for Ad Hoc networks. In layered wireless networks, the implementation of relay selection involves time synchronization and cross-layer optimization. The simulative results show that the proposed algorithm outgoes non-cooperative DSDV routing protocol with considerable gain of deliver ratio and latency at the price of acceptable routing load.