Analyzing and Modeling of the Wireless Link for Sensor Networks
Sun You-xian · Chuangan jishu xuebao · 2007
Link quality has a significant impact on upper-layer protocols and localization algorithms in wireless sensor networks.The channel and link model in network simulators are oversimplified,which challenges the reliability of the protocols or algorithms.This paper studies the non-ideal characteristics of wireless links including temporal-spatial characteristic,irregular connectivity cell and link asymmetry through a large volume of experiments on Berkeley Mica2 Motes.Models of channel and link quality are derived using a combination of analytical and empirical methods.These models can be implemented to simulators to refine the physical and link layer and help us better understand the performance of upper-layer protocols.