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An improved GPSR protocol based on stratification of traffic density is designed to get lower possibility to encounter local optimum in VANET. In the sparse region, every node maintains a list that recorded its multi-hop neighbor nodes, but in the dense region, every node just maintains its one-hop-neighbor nodes. Every node will change their strategy according to the change of the periphery traffic...
This paper investigates the collective behavior of a leader-follower system with communication time lags based on nearest neighbors information. The leaders proposed in the swarm can obtain the information from the environment, but the followers can not. Under the common assumptions, we prove that the individuals of the swarm with the local information will aggregate and form a cohesive cluster of...
This paper considers a swarm model with an attraction-repulsion function involving variable communication time lags and an attractant/repellent. It is proved that for quadratic attractant/repellent profiles the members of the swarm with time delays will aggregate and form a cohesive cluster of finite size in a finite time. Moreover, all the swarm members will converge to more favorable areas of the...
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