A Protocol-Independent Approach for Analyzing the Optimal Operation Point of CSMA/CA Protocols

被引：7

作者：

Cheng, Yu ^{[1
]}

Ling, Xinhua ^{[2
]}

Zhuang, Weihua ^{[3
]}

机构：

[1] IIT, Chicago, IL 60616 USA

[2] BlackBerry Syst Architecture Res Mot, Waterloo, ON, Canada

[3] Univ Waterloo, Elect & Comp Engn, Waterloo, ON, Canada

来源：

IEEE INFOCOM 2009 - IEEE CONFERENCE ON COMPUTER COMMUNICATIONS, VOLS 1-5 | 2009年

关键词：

CENTRAL-LIMIT-THEOREM; IEEE-802.11; VOICE; WLAN;

D O I：

10.1109/INFCOM.2009.5062130

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a protocol-independent approach to reveal a new insight into the performance of carrier sense multiple access with collision avoidance (CSMA/CA) protocols: the family of CSMA/CA protocols, independent of implementation details, share the same optimal operation point where the maximum protocol capacity is achieved. The protocol-independent analysis is inspired by the concept of virtual time slot. At the timescale of virtual-slot, all the CSMA/CA protocols show the same behavior pattern and, therefore, a generic virtual-slot based S-G (VS S-G) analysis is developed to compute the optimal operation point. The accuracy of the VS S-G analysis is benchmarked against the precise protocol-specific analysis, in particular, for the 802.11 distributed coordination function (DCF) and the 802.15.4 contention access period (CAP). Furthermore, this paper discusses how to integrate the network-layer queueing analysis with the VS S-G analysis at the medium access control (MAC) layer to form a generic cross-layer framework for call-level network capacity analysis.

引用

页码：2070 / +

页数：2

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