A novel OFDM-based MAC protocol for wireless LANs

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 per...

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Bibliographic Details
Published in:	2015 10th International Conference on Communications and Networking in China (ChinaCom) pp. 222 - 226
Main Authors:	Fangxin Xu, Qinglin Zhao, Yu Zeng, Jie Yang, Hongning Dai, Pei Dang
Format:	Conference Proceeding
Language:	English
Published:	IEEE 01-08-2015
Subjects:	Algorithm design and analysis Asynchronous Transmission Buffer storage Data communication IEEE 802.11 Standard Media Access Protocol OFDM RTS/CTS Throughput
Online Access:	Get full text
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Summary:	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.
DOI:	10.1109/CHINACOM.2015.7497941