Adaptive forwarding and routing in frequency-hop spread-spectrum packet radio networks with partial-band jamming

The authors consider adaptive protocols for routing around localized partial-band jamming in a frequency-hop (FH) packet radio network. With such protocols, a radio is permitted to modify its normal routing procedures according to local information. A computer program has been developed to simulate an FH packet radio network with partial-band jamming and interference due to other FH and narrowband radios. The network uses time-slotted, receiver-directed, FH spread-spectrum signaling. Results on throughput are presented, and comparisons between different protocols are obtained for a static network topology with both static and mobile network jamming. The authors also introduce least-resistance routing, a routing algorithm that accounts for multiple-access interference, jamming, and other partial-band interference