光载无线网络的MAC层优化控制及性能分析

doi:10.11896／j.issn.1002-137X.2018.10.017

Abstract

Abstract: In simulcast radio-over-fiber based distributed antenna systems (RoF-DAS),a single set of base stations simu-ltaneously broadcast wireless signals to multiple remote antenna units (RAUs) in the downlink,and in the uplink,user stations covered by different RAUs are connected to a wireless local-area network access point with different-length fiber links.To provide a contented-free media access control,this paper presented a parallel gated service IEEE 802.11 point coordination function (PGPCF) with gated service scheme and piggyback technology,improving the throughput of channel resources and reducing the delay deriving from the fiber.This paper also established a Markov chain analysis model to achieve the closed form expression of the mean queue length and the throughput,which overcomes the shortcoming of only employing experiments to analyze the access mechanism of RoF networks.Both the theory analysis and simulation results suggest the validity of improving the network throughput andshortening the mean queue length.

Key words: IEEE 802.11, Mean queue length, Medium access control, Radio-over-fiber, Throughput

CLC Number:

TP393.1

GUAN Zheng, YANG Zhi-jun, QIAN Wen-hua. Improved MAC Protocol in Radio-over-fiber Networks and Its Performance Analysis[J].Computer Science, 2018, 45(10): 89-93.

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Improved MAC Protocol in Radio-over-fiber Networks and Its Performance Analysis

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