Routing in frequency-hop packet radio networks with partial-band jamming

Describes research in adaptive, decentralized routing for frequency-hop packet radio networks with mobile partial-band jamming. A new routing technique, called least-resistance routing (LRR) is developed, and various versions of this routing method are examined. LRR uses a quantitative assessment of the interference environment at a radio to determine a resistance for that radio. This resistance is a measure of the interference the radio is likely to encounter when receiving a transmission. The investigation considers two components for the interference environment: transmissions from other radios and partial-band jamming. The resistances for each radio in a particular path are combined to form a path resistance. Packets are forwarded on the path to the destination with the least resistance. Comparisons are made between different versions of LRR and between LRR and previously developed adaptive routing techniques. It is found that LRR is an effective way for dealing with mobile jamming in a frequency-hop packet radio network. Significant increases in throughput and end-to-end probability of success are obtained by use of LRR