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The IEEE 802.11p standard drafted to support wireless access in vehicular environments (WAVE) or vehicular ad hoc network (VANET) which uses Enhanced Distributed Channel Access (EDCA) mechanism for the contention-based prioritized Quality of Service (QoS) at the MAC layer. The EDCA mechanism defines four access categories (ACs). Each AC queue works as an independent DCF station (STA) with Enhanced...
In this paper, a new cooperative MAC protocol is proposed for the distributed wireless networks. The proposed protocol incorporates mainly three data transmission modes, Direct Transmission (DT), Cooperative Relay (CR), and Multihop Relay (MHR), to increase throughput. Moreover, algorithm is defined to select the suitable data transmission mode as well as to choose optimal helper. The mechanism defined...
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