Multichannel access control method in overlapped vehicle networks

Abstract

The present application relates to a multichannel access control method in an overlapped vehicular network, and more specifically, a multichannel access control method in vehicular networks, for managing a Wireless Access in Vehicular Environments (WAVE) basic service set (WBSS) vehicular network which is managed by a WAVE extended service set control and management system (WESS-CM) and is provided by using a road side unit (RSU) in a plurality of vehicle environments having overlapped areas, comprising: configuring Time Division Multiple Access (TDMA)-slots (T-slots) divided from the synchronization interval with respect to the CCH and a Basic Safety Message channel (BSMCH) for each WBSS that has a control channel (CCH) and the BSMCH in which the synchronization interval are preset, and distributing T-slots divided from the CCH to a plurality of the WBSS; wherein the first T-slot of the group of T-slots of the CCH is used to broadcast a beacon message including TDMA information of the WBSS such as the identification of the WBSS and the number of T-slots used in the CCH such that a vehicular networking is performed normally even at various vehicle densities, thereby providing higher scalability, reliability, and flexibility.