Modeling and Performance Analysis of IEEE 1609.4 Multi-Channel Operation in Vehicular Networks

Vehicular Adhoc Network supports numerous applications over the limited bandwidth resource available. To efficiently utilize this available resources, multi-channel operation supported by IEEE 1609.4 protocol is incorporated within vehicular network. Taking into consideration this fact, the paper presents a MAC model supporting multi-channel operation to efficiently utilize the limited bandwidth resource. The proposed model prioritizes safety messages over non-safety messages alongwith an added feature that each non-safety messages are disseminated only when the preceding safety message dissemination is completed, thus supporting multichannel operation. The simulation is performed using MATLAB’15 Simulink. The obtained simulation result provides evidence that the delay experienced by safety messages are negligible as compared to non-safety messages. Also, for the proposed model, a multi-channel utilization of 1 is attained throughout the simulation run.