A Route Selection Approach Based on Neighbor Dependency Estimated by CSI in Multi-hop Wireless Networks

Unreasonable route selection approach in Multi-hop Wireless Networks (MHWNs) may result in continual routing reconstruction, poor utilization of channel bandwidth and high control overhead. How to select a neighboring node as the next hop and how to evaluate the cost of a link will greatly affect the transmission reliability. In wireless communication, the Channel State Information (CSI) refers to channel properties of a link and describes how a signal propagates from the transmitter to the receiver and represents the combined effect of scattering, fading and power decay with distance, which can represent the transmission characteristics of the wireless communication links. According to the neighbor dependency evaluated by CSI based on Exponential Smoothing Method (ESM),a neighbor dependency-based reliable routing algorithm is presented in this paper.Finally, the performance of the reliable routing protocol based on neighbor dependency (RPBND) is tested in OPNET, and compared with the classical AODV algorithm and the improved AODV based on link Cost (CAODV) algorithm. The simulation results show the RPBND protocol has better performance.