Medium Access Control for Adversarial Channels with Jamming

We study broadcasting on multiple access channels with dynamic packet arrivals and jamming. The presented protocols are for the medium-access-control layer. The mechanisms of timing of packet arrivals and determination of which rounds are jammed are represented by adversarial models. Packet arrivals are constrained by the average rate of injections and the number of packets that can arrive in one round. Jamming is constrained by the rate with which the adversary can jam rounds and by the number of consecutive rounds that can be jammed. Broadcasting is performed by deterministic distributed protocols. We give upper bounds on worst-case packet latency of protocols in terms of the parameters defining adversaries. Experiments include both deterministic and randomized protocols. A simulation environment we developed is designed to represent adversarial properties of jammed channels understood as restrictions imposed on adversaries.