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A COOPERATIVE BROADCASTING METHOD FOR A SENSOR NETWORK

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Author(s): Wataru Uemura | Masashi Murata

Journal: International Journal of Ad Hoc, Sensor & Ubiquitous Computing
ISSN 0976-2205

Volume: 2;
Issue: 2;
Start page: 1;
Date: 2011;
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Keywords: IEEE802 | 15 | 4 | Sensor Network | Ad hoc Network | Broadcasting | a Hidden Node Problem

ABSTRACT
Sensor networks and ad-hoc networks, which do not require a base station such as an access point, havea hidden node problem because nodes communicating at the same time cannot know each other'scommunication status. On other hand, in a wireless infrastructure network the access point manages thecommunication with the node using RTS (request to send) and CTS (clear to send). However, we cannotuse the RTS/CTS method in broadcasting because the number of target nodes is not one but more thantwo. In this paper, we propose a broadcasting method based on RTS/CTS to avoid this problem. In thismethod the sender node selects the target node, and they communicate with each other. Neighboringnodes can listen to these packets. Then the sender node can broadcast its information to multiple nodes.We use the wireless nodes specified by IEEE 802.15.4 which is the physical layer's specification. Ourexperimental results show effective transmissions.
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