一種應(yīng)用于WLAN的混合雙工MAC協(xié)議

吳皓威; 鄒玉濤; 孫晨; 歐靜蘭

doi:10.11999/JEIT160539

一種應(yīng)用于WLAN的混合雙工MAC協(xié)議

doi: 10.11999/JEIT160539 cstr: 32379.14.JEIT160539

基金項(xiàng)目:

國家高技術(shù)研究發(fā)展計(jì)劃(2015AA7072014C)，重慶市院士基金項(xiàng)目(cstc2014yykfys90001)

計(jì)量
- 文章訪問數(shù): 1448
- HTML全文瀏覽量: 128
- PDF下載量: 399
- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-05-26
- 修回日期: 2016-09-23
- 刊出日期: 2017-04-19

A Hybrid-duplex MAC Protocol for WLAN

Funds:

The National High-tech RD Program (2015AA7072014C), The Chongqing Academician Fund Project (cstc2014yykfys90001)

摘要

摘要: 全雙工通信技術(shù)可以提高鏈路容量和頻譜利用率，會給現(xiàn)有無線局域網(wǎng)(WLAN)帶來極大的變革。該文針對傳統(tǒng)半雙工WLAN向全雙工WLAN發(fā)展的過程中多種雙工站點(diǎn)共存的問題，提出一種混合雙工媒體接入控制(MAC)協(xié)議(HYD-MAC)。該協(xié)議合理設(shè)計(jì)了請求發(fā)送/清除發(fā)送(RTS/CTS)幀，并根據(jù)網(wǎng)絡(luò)隱藏節(jié)點(diǎn)狀況和站點(diǎn)全雙工能力，自適應(yīng)地選擇最佳的傳輸模式，包括同步全雙工、異步全雙工、條件半雙工以及半雙工等4種模式。給出了HYD-MAC協(xié)議在4種傳輸模式下的鏈路建立與數(shù)據(jù)傳輸流程，分析了HYD-MAC的飽和吞吐量和介質(zhì)訪問時(shí)延等網(wǎng)絡(luò)性能。仿真結(jié)果表明，所提的HYD-MAC的性能優(yōu)于傳統(tǒng)半雙工DCF協(xié)議，特別在幀長較長、站點(diǎn)數(shù)較少、數(shù)據(jù)傳輸速率較低時(shí)，HYD-MAC的性能提升效果更加明顯；與經(jīng)典的全雙工協(xié)議相比，HYD-MAC協(xié)議通過犧牲極少的吞吐量和時(shí)延性能，可以同時(shí)滿足全雙工、半雙工以及混合雙工網(wǎng)絡(luò)的通信需求。
- 無線局域網(wǎng) /
- 媒體接入控制 /
- 全雙工 /
- 半雙工 /
- 混合雙工
Abstract: Full duplex communication technology can improve the link capacity and spectrum utilization, which brings great changes to the existing Wireless Local Area Network (WLAN). To Solve the compatibility issues in the process of half-duplex WLAN evolution to full-duplex WLAN, a HYbrid-Duplex MAC protocol (HYD-MAC) is proposed. According to the application scenarios and the full-duplex capability of the stations, the Request To Send/Clear To Send (RTS/CTS) frames are expanded and HYD-MAC can adaptively choose one from the four duplex modes, which are the synchronous full duplex, the asynchronous full duplex, the conditional half-duplex and half-duplex. The link establishment process of HYD-MAC protocol in four transmission modes are presented, and the network performance such as the network saturation throughput and medium access delay of the proposed protocol are analyzed. The results show that the HYD-MAC protocol can satisfy the communication requirements of the full-duplex network, half-duplex network and hybrid-duplex network at the same time by sacrificing little throughput and delay performance.
- WLAN /
- MAC /
- Full-duplex /
- Half-duplex /
- Hybrid-duplex

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參考文獻(xiàn)(18)

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