Location-Aware Power-Efficient Directional MAC Protocol in Ad Hoc Networks Using Directional Antenna(Wireless Communication Technologies)
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概要
- 論文の詳細を見る
Use of directional antenna in the context of ad hoc wireless networks can largely reduce radio interference, thereby improving the utilization of wireless medium. Our major contribution in this paper is to devise a MAC protocol that exploits the advantages of directional antenna in ad hoc networks for improved system performance. In this paper, we have illustrated a MAC protocol for ad hoc networks using directional antenna with the objective of effective utilization of the shared wireless medium. In order to implement effective MAC protocol in this context, a node should know how to set its transmission direction to transmit a packet to its neighbors and to avoid transmission in other directions where data communications are already in progress. In this paper, we are proposing a receiver-centric approach for location tracking and MAC protocol, so that, nodes become aware of its neighborhood and also the direction of the nodes for communicating directionally. A node develops its location-awareness from these neighborhood-awareness and direction-awareness. In this context, researchers usually assume that the gain of directional antennas is equal to the gain of corresponding omni-directional antenna. However, for a given amount of input power, the range R with directional antenna will be much larger than that using omni-directional antenna. In this paper, we also propose a two level transmit power control mechanism in order to approximately equalize the transmission range R of an antenna operating at omni-directional and directional mode. This will not only improve medium utilization but also help to conserve the power of the transmitting node during directional transmission. Our proposed directional MAC protocol can be effective in both ITS (Intelligent Transportation System), which we simulate in String and Parallel Topology, and in any community network, which we simulate in Random Topology. The performance evaluation on QualNet network simulator clearly indicates the efficiency of our protocol.
- 社団法人電子情報通信学会の論文
- 2005-03-01
著者
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UEDA Tetsuro
ATR Adaptive Communications Research Laboratories
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TANAKA Shinsuke
ATR Adaptive Communications Research Laboratories
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Ueda Tetsuro
Atr Adaptive Communications Research Laboratory Keihanna Science City
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UEDA Tetsuro
Advanced Telecommunications Research Institute International (ATR)
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Siuli Roy
Indian Institute of Management Calcutta
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Somprakash Bandyopadhyay
Indian Institute of Management Calcutta
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Roy Siuli
Indian Institute of Management-Calcutta
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Bandyopadhyay Somprakash
Indian Institute of Management-Calcutta
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Ueda T
Nec Co. Kawasaki‐shi Jpn
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SAHA Dola
Indian Institute of Management
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Tanaka S
Atr Adaptive Communications Research Laboratory Keihanna Science City
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Roy Siuli
Indian Institute Of Management
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Bandyopadhyay Somprakash
Indian Institute Of Management
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