Abstract
Research development of recent years has identified the Wireless Access in Vehicular Environment (WAVE) technology as a prominent and efficient candidate for future vehicular communication. Under WAVE standard safety messages are broadcast or exchanged between all involved mobiles at the rate of 1 to 10 Hz. However, in a congested environment, Broadcast Storm (BSt) problem naturally occurs and exhausts the available channel bandwidth thereby rendering exchange and sharing of vital information impossible. In our recent work, the Dynamic Broadcast Storm Mitigation Algorithm (DBSMA) proved to be a good candidate for BSt problem mitigation for Cooperative Awareness Messages (CAMs) only. In the present work, the DBSMA is improved (IDBSMA) to cater for both CAMs and Decentralized Environmental Notification Messages (DENMs). The developed IDBSMA approach was tested under two cases scenario condition and simulation result demonstrated the outperformance of the IDBSMA over the DBSMA algorithm in three dimensions. Firstly, in terms of broadcasting delay, secondly in terms of performance within the preset range and lastly in terms of Reserved Margin Space (RMS) to account for the DENMs messages.
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