一种带内全双工无线网络MAC机制及性能分析

doi:10.3969/j.issn.1001-2400.2018.03.022

西安电子科技大学学报

一种带内全双工无线网络MAC机制及性能分析

孙彦景;渠倩倩;王博文;左海维;王晓琳

(中国矿业大学信息与控制工程学院，江苏徐州 221008)

收稿日期:2017-04-19 出版日期:2018-06-20 发布日期:2018-07-18
作者简介:孙彦景(1977-), 男, 教授, E-mail: yjsun@cumt.edu.cn
基金资助:
国家自然科学基金青年基金资助项目(51504255，51504214); 江苏省自然科学基金青年基金资助项目(BK20150204)；国家重点研发计划资助项目(2016YFC0801403)；江苏省重点研发计划资助项目(BE2015040)

Medium access control mechanism and performance analysis for in band full duplex wireless networks

SUN Yanjing;QU Qianqian;WANG Bowen;ZUO Haiwei;WANG Xiaolin

(School of Information and Control Engineering, China Univ. of Mining and Technology, Xuzhou 221008, China)

Received:2017-04-19 Online:2018-06-20 Published:2018-07-18

摘要/Abstract

摘要：

在带内全双工无线接入点与半双工用户的无线网络中，当接入点发起信道接入请求时，数据传输阶段接入点的同频上行链路将处于空闲状态，此时网络吞吐量仅相当于半双工模式．针对上述问题，提出一种新的媒体接入控制机制，可通过一次信道接入建立非对称带内全双工双向链路．无论接入点还是用户接入信道，该机制均能够保证接入点与两个用户进行同时同频上下行数据传输，提高了网络吞吐量．通过构建Markov模型分析非对称带内全双工-媒体接入控制的吞吐量性能．结果表明，非对称带内全双工-媒体接入控制与请求发送／允许发送机制相比，吞吐量提高了近1倍．

关键词: 无线网络, 带内全双工, 媒体接入控制机制, 吞吐量, 性能分析

Abstract:

This paper considers an in-band full-duplex wireless network that consists of an AP with full-duplex capability and multiple clients without full-duplex capability. When AP initiates a channel access request, the uplink of the AP is in the idle state in the data transmission stage, which limits the increase of network throughput. Therefore, a new MAC mechanism called Asymmetrical Full Duplex (AFD) is proposed, which can establish an asymmetric IBFD bidirectional link through primary channel access. No matter what node wins the channel, the mechanism can ensure that the uplink flow and the downlink flow of the AP communicate simultaneously at the same frequency. In this way, the throughput of the wireless network is greatly improved. Both analysis and numerical simulations are carried out to evaluate the performance of the proposed MAC mechanism. The results show that the throughput of the AFD-MAC is nearly doubled compared with the RTS／CTS mechanism.

Key words: wireless networks, in-band full-duplex, MAC mechanism, throughput, performance analysis

孙彦景;渠倩倩;王博文;左海维;王晓琳. 一种带内全双工无线网络MAC机制及性能分析[J]. 西安电子科技大学学报, 2018, 45(3): 123-129.

SUN Yanjing;QU Qianqian;WANG Bowen;ZUO Haiwei;WANG Xiaolin. Medium access control mechanism and performance analysis for in band full duplex wireless networks[J]. Journal of Xidian University, 2018, 45(3): 123-129.

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一种带内全双工无线网络MAC机制及性能分析

Medium access control mechanism and performance analysis for in band full duplex wireless networks

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