Date of Publication :2nd June 2024

Abstract: Due to an increase in node collisions, the present IEEE 802.11p protocol is unable to guarantee optimal data transmission efficiency in dense networks of car nodes. This work proposes an improved IEEE 802.11p protocol that may be applied with TDMA to ensure effective packet delivery in networks designed on clusters suitable for densely populated areas. Concurrently, a two-dimensional Markov model is constructed to evaluate the performance of the updated mechanism and provide system performance metrics, including delay and transmission rate. In the end, the improved procedure is evaluated and tested, and the effect of node and cluster head numbers on the system's communication effectiveness is looked at. It can direct the placement of roadside facilities and the VANET cluster head optimization process to some extent. Last but not least, in order to increase network trust, we'll employ the Trust Computation Model to detect selfish nodes and remove them from routing as much as possible.

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