Research Article
A Novel OFDM-Based MAC Protocol for Wireless LANs
@INPROCEEDINGS{10.4108/eai.15-8-2015.2260720, author={Fangxin Xu and Qinglin Zhao and Yu Zeng and Jie Jie and Hongning Dai and Pei Dang}, title={A Novel OFDM-Based MAC Protocol for Wireless LANs}, proceedings={10th EAI International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={9}, keywords={ofdm asynchronous transmission rts/cts}, doi={10.4108/eai.15-8-2015.2260720} }- Fangxin Xu
Qinglin Zhao
Yu Zeng
Jie Jie
Hongning Dai
Pei Dang
Year: 2015
A Novel OFDM-Based MAC Protocol for Wireless LANs
CHINACOM
IEEE
DOI: 10.4108/eai.15-8-2015.2260720
Abstract
Conventional 802.11 networks perform contention and data transmission serially over the whole channel. This leads to low throughput efficiency. In this paper, we propose a novel CSMA/CQ (carrier sense multiple access/contention queuing) to improve the throughput efficiency. In CSMA/CQ, each node performs contention and data transmission concurrently over two separate subchannels, where a contention queue is introduced to coordinate the concurrency. CSMA/CQ inherits the conventional distributed coordination mechanism on contention, and adopts a centralized control idea on data transmission without requiring strict time synchronization. As a result, CSMA/CQ can achieve far higher throughput than conventional 802.11 networks. Extensive simulations verify that the efficiency of CSMA/CQ.