Analysis of topology-unaware TDMA MAC policies for ad-hoc networks under diverse traffic loads

Author:

Oikonomou Konstantinos1,Stavrakakis Ioannis1

Affiliation:

1. University of Athens, Ilissia, Athens, Greece

Abstract

The ever-changing nature of the ad-hoc networks, makes the design of efficient Medium Access Control (MAC) policies challenging. Topology-unaware MAC policies, that allocate slots deterministically or probabilistically have been proposed in the past and evaluated under heavy traffic assumptions. In this paper, the heavy traffic assumption is relaxed and the system throughput achieved by these policies is derived as a function of the traffic load. The presented analysis establishes the conditions and determines the values of the access probability for which the system throughput under the probabilistic policy is not only higher than that under the deterministic policy but it is also close to the maximum achievable, provided that the traffic load and the topology density of the network are known. In case the traffic load and/or the topology density are not known (which is commonly the case in ad-hoc networks), alternative values for the access probability are also derived which, although not the optimal (maximizing the system throughput), they do lead to a system throughput higher than that under the Deterministic Policy. Simulation results for a variety of topologies with different characteristics support the claims and the expectations of the analysis and show the comparative advantage of the Probabilistic Policy over the Deterministic Policy.

Publisher

Association for Computing Machinery (ACM)

Reference23 articles.

1. P. Karn "MACA- A new channel access method for packet radio " in ARRL/CRRL Amateur Radio 9th Computer Networking Conference pp. 134--140 1990. P. Karn "MACA- A new channel access method for packet radio " in ARRL/CRRL Amateur Radio 9th Computer Networking Conference pp. 134--140 1990.

2. MACAW

3. Floor acquisition multiple access (FAMA) for packet-radio networks

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. An Adaptive Time-Spread Multiple-Access Policy for Wireless Sensor Networks;EURASIP Journal on Wireless Communications and Networking;2007-05-03

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3