A Power Efficient Access Method by Polling for Wireless Mesh Networks

Abstract

This paper proposes a power‐efficient access method by polling for wireless mesh networks, which is robust to channel variation due to movement in the surrounding communication environment. In the proposed method, all intermittent nodes periodically repeat ID transmission and a succeeding short period of the receiving state. A node having a packet to transmit goes into a continuous receiving state. Right after receiving an ID transmission from an arbitrary node, it transmits the packet to the node of the preceding ID transmission. In the conventional access method for wireless mesh network, a transmitting node specifies a receiving node well ahead of transmission, leading to a possible change in the wireless link quality at the time of packet transmission from the time of receiving node determination. The proposed access method is robust to wireless channel variation, in the sense that a transmitting node chooses a receiving node just before transmitting the packet. Simulation results show its robustness to wireless channel variations. In the proposed access method, an entire network consumes about one‐sixth the power of a network using the conventional method. © 2011 Wiley Periodicals, Inc. Electron Comm Jpn, 94(4): 20–27, 2011; Published online in Wiley Online Library (http://wileyonlinelibrary.com). DOI 10.1002/ecj.10309

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