Efficacy of channel-and-node aware routing strategies in wireless ad hoc networks
Jia Liu, A. Annamalai · 2006
Routing protocols for ad hoc networks have gener- ally ignored channel fading and do not exploit the differences in the communication links between nonhomogeneous nodes. We argue that the end-to-end route outage probability (EOP) is a more appropriate metric for abstracting the physical layer performance compared to the conventional minimum hop-count metric, and thus more efficient to minimize packet loss due to fading. The efficacy of three channel-aware routing protocols, and traditional minimum hop count routing strategy are studied analytically based on the EOP metric. Different from the conclu- sion drawn in (5), we show that the multiple route path selection (MRPS) scheme is inferior to both single route (SR) and multiple route (MR) protocols in many practical MANET scenarios. More importantly, we propose to include node capability information (e.g., remaining battery life/maximum transmit power, diversity receiver etc.) in partial route outage probability calculation to further improve the network performance.