ROUTING STRATEGIES OF MULTIHOP PACKET RADIO NETWORKS WITH A MORE REALISTIC PACKET RECEPTION PROBABILITY.

Abstract

A new model is presented for analyzing the performance of routing strategies in a packet radio network where each station has adjustable transmission power. There is a tradeoff in choosing this transmission power. Large transmission power means larger hops, while small transmission power minimizes conflicts among the transmissions. Different routing strategies reflect different weightings of these two factors. Existing research efforts assume a threshold packet exception model, i. e. , if a user is within the transmitter's range, it will receive the packet with probability one (provided there are no collisions with other transmissions); otherwise it will not receive the packet. The authors propose a more realistic model in which the packet reception probability gradually degrades with distance from the transmitter. The performance of a multihop packet radio network under different routing strategies is analyzed.