Multiple access protocol with QoS support for mobile Ad Hoc networks
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摘要: 基于随机竞争和冲突解决的思想,为多跳移动Ad Hoc网络提出了一种支持服务质量(QoS)的多址接入(QMA)协议.将业务负载划分为时延敏感的实时业务和非时延敏感的数据业务.按照该协议,节点在发送业务分组前利用预报突发进行竞争接入,节点按照业务分组时延情况确定预报突发的长度,所发预报突发能持续到最后的节点优先获得接入.同时,具有实时业务的节点可以按照其优先级在更早的竞争微时隙中开始发送预报突发,因而可以比发送数据业务的节点更优先接入信道.最后利用OPNET仿真评估了QMA协议的多址性能,通过与带冲突避免的载波侦听(CSMA/CA)协议比较表明,QMA协议可以提供较高的吞吐量和较低的消息丢失率,并能为实时业务提供较低的时延,从而实现了对多媒体业务的QoS支持.
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关键词:
- 移动Ad Hoc网络 /
- 多址接入协议 /
- QoS /
- 冲突解决 /
- 预报突发
Abstract: Based on the concept of random contention and collision resolution, a QoS-based multiple access (QMA) protocol for Ad Hoc networks was proposed to support multimedia service and multi-hop architecture. The traffic was divided into two groups with different requirements on delay, namely real-time traffic and data (or non real-time) traffic. According to the protocol, nodes contend to access channel, and the node broadcasting the most forecast bursts (FBs) get right to access the channel according to its packet delay and the earliest deadline first (EDF) principle. Meanwhile, the nodes with real-time traffic have higher priority to access channel than those with data traffic by broadcasting FBs in earlier contention slots. Through simulations in OPNET modeler, it is shown that the QMA protocol outperforms the carrier sensing multiple access with collision avoidance (CSMA/CA) protocol in terms of throughput, message discard rate and average packet delay, and the QMA protocol can provide differentiated QoS guarantees for traffic in multi-hop networks.-
Key words:
- mobile Ad Hoc network /
- multiple access protocol /
- QoS /
- collision resolution /
- forecast burst
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[1] Haas Z J, Deng J. Dual busy tone multiple access (DBTMA): a multiple access control scheme for ad hoc networks [J]. IEEE Trans Commun, 2002, 50(6): 975-85 [2] Jurdak R, Lopes C V, Baldi P. A survey, classification and comparative analysis of medium access control protocols for ad hoc networks [J]. IEEE Communications Surveys & Tutorials, 2004, 6(1): 2-16 [3] Bharghavan V, Demers A, Shenker S, et al. MACAW: A media access protocol for wireless LANs ACM SIGCOMM '94. London, UK:ACM, 1994: 212-225 [4] ISO/IEC 8802-11:1999, IEEE Standard for Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications [S] [5] 李云. D-PRMA:一种新的无线Ad Hoc网络资源预留MAC机制[J].电子与信息学报,2005,27(6): 967-972 Li Yun. D-PRMA: A novel MAC mechanism supporting resource reservation for wireless Ad Hoc networks [J]. Journal of Electronics & Information Technology, 2005, 27(6):967-972(in Chinese) [6] Yoon Hayoung, Kim Jongwon, Shin Dongyun. Dynamic admission control in IEEE 802.11e EDCA-based wireless home network IEEE Consumer Communications and Networking Conference (CCNC) 2006. Las Vegas, USA:IEEE,2006: 55-59 [7] 盛敏. 移动Ad Hoc网络关键技术研究 .西安:西安电子科技大学通信工程学院,2003 Sheng Min. Research on key techniques of mobile Ad Hoc networks . Xi′an: School of Telecommunications Engineering, Xidian University, 2003 (in Chinese) [8] Yang Xiao, Yi Pan. Differentiation, QoS guarantee, and optimization for real-time traffic over one-hop Ad Hoc networks [J]. IEEE Transactions On Parallel And Distributed Systems, 2005, 16(6): 538-549 [9] Anastasi G, Lenzini L, Mingozzi E. HIPERLAN/1 MAC protocol: stability and performance analysis [J]. IEEE Journal on Selected Areas in Communications.2000,18(9) :1787-1798 [10] Sobrinho J L, Krishnakumar A S. Quality-of-service in ad hoc carrier sense multiple access wireless networks [J]. IEEE J Select Areas Commun, 1999, 17(8): 1353-1368 -
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