Modeling and analysis of multiple input multiple output MAC under link quality of service constraints

doi:10.3724/SP.J.1087.2012.01844

Journal of Computer Applications ›› 2012, Vol. 32 ›› Issue (07): 1844-1848.DOI: 10.3724/SP.J.1087.2012.01844

• Network and communications • Previous Articles Next Articles

Modeling and analysis of multiple input multiple output MAC under link quality of service constraints

DENG Xue-bo¹,WANG Xiao-qiang¹,CHEN Xi¹,MA Rui¹,LIAO Yong²,LI Ping²,NIU Xiao-jun²

1. Chongqing Electric Power Dispatching and Communication Center, Chongqing 400014, China
2. Center of Communication and Tracking Telemetering Command, Chongqing University, Chongqing 400044, China

Received:2011-12-31 Revised:2012-02-28 Online:2012-07-05 Published:2012-07-01
Contact: LIAO Yong

链路服务质量限制下多输入多输出媒体接入控制的建模与分析

邓雪波¹,王小强¹,陈曦¹,马锐¹,廖勇²,李平²,牛晓军²

1. 重庆电力调度控制中心，重庆400014
2. 重庆大学通信与测控中心，重庆400044

通讯作者: 廖勇
作者简介:邓雪波(1975-)，男，重庆人，工程师，主要研究方向：电力系统通信；王小强(1982-)，男，重庆铜梁人，助理工程师，主要研究方向：电力系统通信；陈曦(1983-)，男，重庆人，助理工程师，主要研究方向：电力系统通信；马锐(1987-)，男，重庆人，助理工程师，主要研究方向：电力系统通信；廖勇(1982-)，男，四川自贡人，讲师，博士研究生，CCF会员，主要研究方向：宽带无线移动通信；李平(1986-)，男，四川绵阳人，硕士研究生，主要研究方向：宽带无线移动通信；牛晓军(1987-)，男，河北石家庄人，硕士研究生，主要研究方向：宽带无线移动通信。
基金资助:
重庆电力公司科技项目(渝电通调KJ（2011）341号);中央高校基本科研业务费专项(CDJXS11161157)

Abstract

Abstract: To solve the insufficiency of Stream Control Multiple Access (SCMA) protocol that it fails to consider both the link Quality of Service (QoS) and the channel access scheduling policy of Multiple Input Multiple Output (MIMO) stream, this paper put forward a SCMA/QA protocol. This protocol fully considered the channel states of different streams in each link and built up a discrete Markov chain model based on channel state of stream. Moreover, it took the request of QoS in each link into consideration and adopted fixed Request to Send/Clear to Send (RTS/CTS) to exchange the information of link QoS and taking the link QoS weight as a primary case in link decision, made the link scheduling problem based on QoS of MIMO modeled as an optimization problem, which led to the result of optimal link and the number of communication streams under the Karush-Kuhn-Tucker (KKT) conditions. Finally, according to the numerical analysis which set throughput as the parameter of the QoS, the results show that under the same network environment the SCMA/QA improves the system throughput much better than SCMA and QoS-aware Cooperation SCMA (QCSCMA).

Key words: Multiple Input Multiple Output (MIMO), Medium Access Control (MAC), Quality of Service (QoS), stream control

摘要： 针对SCMA协议没有同时考虑链路服务质量(QoS)和多输入多输出(MIMO)流的信道接入调度策略的不足，提出一种SCMA/QA协议。协议充分考虑了每个链路中不同流的信道状态，建立了一个基于流的信道状态离散马尔可夫链模型，并融合考虑了每条链路的QoS需求，采用修改的RTS/CTS进行链路QoS的信息交换，通过链路QoS权重作为链路选择的主要因素，将MIMO下基于QoS的链路调度问题建模为一个最优化问题，并在卡罗需—库恩—塔克(KKT)条件下得到最优链路以及通信的流数目。最后，以吞吐量为QoS指标进行了数值分析，结果表明在相同网络环境下，SCMA/QA比SCMA和QCSCMA能更好地提高系统的吞吐量。

关键词: 多输入多输出, 媒体接入控制, 服务质量, 流控制

CLC Number:

TN925

DENG Xue-bo WANG Xiao-qiang CHEN Xi MA Rui LIAO Yong LI Ping NIU Xiao-jun. Modeling and analysis of multiple input multiple output MAC under link quality of service constraints[J]. Journal of Computer Applications, 2012, 32(07): 1844-1848.

邓雪波王小强陈曦马锐廖勇李平牛晓军. 链路服务质量限制下多输入多输出媒体接入控制的建模与分析[J]. 计算机应用, 2012, 32(07): 1844-1848.

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Modeling and analysis of multiple input multiple output MAC under link quality of service constraints

链路服务质量限制下多输入多输出媒体接入控制的建模与分析

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