A multichannel MAC protocol to solve exposed terminal problem in multihop wireless networks

Authors:
Xiaoqin Xing;Kai Liu;Hongsheng Lu
Affiliations:
School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China;School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China;School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China
Venue:
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Year:
2009

Citing 2
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Abstract

A novel multichannel MAC protocol to solve exposed terminal problem is presented for efficient channel sharing in multihop wireless networks. It employs request-to-send and clear-to-send (RTS/CTS) dialogue on a common channel and flexibly selects conflict-free traffic channel to transmit data packet based on a novel channel selection scheme. The acknowledgment (ACK) packet is transmitted over another common channel, which effectively eliminates the influence of exposed terminal problem. Finally, simulation results show that the proposed protocol outperforms the CAM-MAC protocol on multiple access performance.