In Proceedings of the Twenty-Second Annual Joint Conference of the IEEE Computer
and Communications Societies, pages 1293??“1303, April 2003.
Chapter 4
Medium Access Control Protocols for Wireless
Sensor Networks
Ali Abu-el Humos, Mihaela Cardei, Bassem Alhalabi, and Sam Hsu
Department of Computer Science & Engineering
Florida Atlantic University, Boca Raton, FL 33431
{aabuel@, mihaela@cse., alhalabi@, sam@cse.}fau.edu
1 Introduction
Recent improvements in a?®ordable and e?±cient integrated electronic devices
have a considerable impact on advancing the state of wireless sensor networks
(WSNs), which constitute the platform of a broad range of applications
related to national security, surveillance, military, health care, environmental
monitoring, smart spaces, inventory tracking, and recently industrial controls.
AWSN is a collection of a large number of wireless nodes deployed to measure
and report certain parameters such as temperature, pressure, humidity,
etc. Each node consists of sensing, processing, power and radio units [1]. Sensor
nodes are usually deployed to serve one application and are configured to
operate as a multi-hop network. A WSN contains one or more sinks that relay
data between users and sensor nodes. The main functions of a sensor node
are to sense the surrounding environment and to participate in data forwarding.
Additionally, a sensor node might perform data aggregation in order to
reduce the bandwidth consumption, power consumption for communication,
and media access delay.
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