Abstract:

The authors proposed a Markov chain model and a continuous idle slots model for the transmission mechanism of IEEE 802.11p/1609. Using these two models, we got the conflict probability of WAVE system, on the basis of which, a channel chose policy was presented to get the best access channel. This policy can balance the throughput of all the channels and solve the channel congestion problem in the basal protocol. The simulation results show that the average throughput rate was improved obviously.

Key words: IEEE802.11p/1609, WAVE, conflict estimating, channel  chose