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题名: Load-Aware Channel Hopping Protocol Design for Mobile Ad Hoc Networks
作者: Chih-Min Chao
Hsien-Chen Tsai
Chao-Ying Huang
贡献者: 國立臺灣海洋大學:資訊工程學系
NTOU:Department of Computer Science and Engineering
关键词: Ad hoc networks
Multichannel MAC protocols
Quorum systems
日期: 2017-01
上传时间: 2017-11-09T03:25:22Z
出版者: Wireless Networks
摘要: Abstract:Using multiple channels in wireless networks improves spatial reuse and reduces collision probability and thus enhances network throughput. Designing a multi-channel MAC protocol is challenging because multi-channel-specific issues such as channel assignment, the multi-channel hidden terminal problem, and the missing receiver problem, must be solved. Most existing multi-channel MAC protocols suffer from either higher hardware cost or poor throughput. Some channel hopping multi-channel protocols achieve pretty good performance in certain situations but fail to adjust their channel hopping mechanisms according to varied traffic loads. In this paper, we propose a load-aware channel hopping MAC protocol (LACH) that solves all the multi-channel-specific problems mentioned above. LACH enables nodes to dynamically adjust their schedules based on their traffic loads. In addition to load awareness, LACH has several other attractive features: (1) Each node is equipped with a single half-duplex transceiver. (2) Each node’s initial hopping sequence is generated by its ID. Knowing the neighbor nodes’ IDs, a node can calculate its neighbors’ initial channel hopping sequences without control packet exchanges. (3) Nodes can be evenly distributed among available channels. Through performance analysis, simulations, and real system implementation, we verify that LACH is a promising protocol suitable for a network with time-varied traffic loads.
關聯: 23(1), pp.89-101
显示于类别:[資訊工程學系] 期刊論文


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