Design and implementation of a MAC protocol for timely and reliable delivery of command and data in dynamic wireless sensor networks

• Published in: Sensors (Basel, Switzerland) Vol. 13; no. 10; pp. 13228 - 13257
• Main Authors: Oh, Hoon, Van Vinh, Phan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 30.09.2013; Molecular Diversity Preservation International (MDPI)
• Subjects: Algorithms; bidirectional communication; Communication; Computer Communication Networks - instrumentation; Computer-Aided Design; Data transmission; Energy consumption; Equipment Design; Equipment Failure Analysis; Information Storage and Retrieval - methods; Listening; monitoring and control; Protocol; reliable link; Sensors; Signal Processing, Computer-Assisted - instrumentation; slot scheduling; TDMA; Transducers; Wireless Technology - instrumentation
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s131013228

This paper proposes and implements a new TDMA-based MAC protocol for providing timely and reliable delivery of data and command for monitoring and control networks. In this kind of network, sensor nodes are required to sense data from the monitoring environment periodically and then send the data to a sink. The sink determines whether the environment is safe or not by analyzing the acquired data. Sometimes, a command or control message is sent from the sink to a particular node or a group of nodes to execute the services or request further interested data. The proposed MAC protocol enables bidirectional communication, controls active and sleep modes of a sensor node to conserve energy, and addresses the problem of load unbalancing between the nodes near a sink and the other nodes. It can improve reliability of communication significantly while extending network lifetime. These claims are supported by the experimental results.