Online from: 1972
Subject Area: Electrical & Electronic Engineering
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|Title:||Design, modeling and simulation of a novel directional MAC protocol for |
|Author(s):||Fan Jun, (School of Computer Science and Technology, Huazhong University of Science and Technology, WuChang, People's Republic of China), Li Zhitang, (School of Computer Science and Technology, Huazhong University of Science and Technology, WuChang, People's Republic of China), Nie Wei, (School of Automation Engineering, University of Electronic Science and Technology, Chengdu, People's Republic of China)|
|Citation:||Fan Jun, Li Zhitang, Nie Wei, (2008) "Design, modeling and simulation of a novel directional MAC protocol for |
|Keywords:||Control theory, Cybernetics, Modelling, Telecommunication networks|
|Article type:||Technical paper|
|DOI:||10.1108/03684920810907571 (Permanent URL)|
|Publisher:||Emerald Group Publishing Limited|
Purpose – The purpose of this paper is to focus on alleviating the problems of both hidden and exposed terminal, which remain unsolved in many directional MAC protocols.
Design/methodology/approach – GPS is used to calibrate synchronization among the nodes, and directional antennas are used. In the protocol, different antenna mode and transmit power are used. The assertion signal and omni-directional RTS are transmitted in omni-directional mode, while directional CTS, directional RTS, DATA and ACK are transmitted in directional mode. With properly designed RTS-CTS handshake, the protocol can make full use of spatial reuse of directional communication and enhance parallelism in data transmission.
Findings – The preliminary simulation results indicate that the protocol works well and achieves considerably high performance in both sparse and dense
Research limitations/implications – The line of sight environment is the main limitation that the MAC protocol will be applied.
Practical implications – The protocol is a very useful solution for employing directional antennas for
Originality/value – The MAC protocol can effectively alleviate the directional hidden and exposed terminal problems as well as node deafness. It can greatly improve throughput and achieve low-medium access delay, making it suitable for
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