Adaptive TDMA Slot Assignment Using Request Aggregation in Wireless Sensor Networks

被引：10

作者：

Barnawi, Abdulaziz Y. ^{[1
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Comp Engn, Dhahran 31261, Saudi Arabia

来源：

ANT 2012 AND MOBIWIS 2012 | 2012年 / 10卷

关键词：

Wireless Sensor Networks; MAC; TDMA; Scheduling; Energy efficiency; Delay; PROTOCOL; MAC;

D O I：

10.1016/j.procs.2012.06.014

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

TDMA-based MAC protocols are considered an energy efficient solution to prolong wireless sensor network lifetime. However, their drawbacks such as complexity of slot assignment and schedule maintenance and adaptivity to varying traffic conditions are yet to be handled in an efficient way. In this paper we present On-demand Convergecast Scheduling-based (OCS) MAC protocol. It is a centralized and adaptive multihop scheduling-based TDMA protocol which supports convergecast applications. OCS adopts a novel requests aggregation mechanism for adaptive slot assignment such that time slots are assigned on-demand to currently active sources as well as relays. The performance of OCS is compared to existing protocols based on simulations in ns-2. Results show that OCS outperforms protocols such as Z-MAC, S-MAC, and others in terms of delay, throughput and energy efficiency. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of [name organizer]

引用

页码：78 / 85

页数：8

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