A distributed prioritized multiple access scheme for Ad Hoc networks using time-frequency hopping communications

Ruonan Zhang, Miao Li, Lin Cai, Bin Li

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

In the time-frequency hopping (TFH) communications, a terminal transmits data at pseudo-random time slots and carrier frequencies, leading to high security against eavesdropping and anti-interference capability. However, in an ad hoc network using the TFH communications, it is challenging to coordinate stations in a distributed manner to share the time/frequency resources, avoid collision, and provide service differentiation. In this paper, we propose a distributed, prioritized multiple access control (MAC) protocol for TFH-based ad hoc networks, named TFH-MAC. In this scheme, the channel occupancy ratio (COR) is introduced to indicate the transmission of stations in a matrix of time-frequency resource blocks. By assigning different predetermined COR thresholds and contention window sizes to traffic classes, the priorities in channel access can be provided. Furthermore, the low-complexity random linear coding (RLC) is employed to repair frames from time-frequency spread segments with partial collision. In particular, the segments correctly received in previous transmissions can be combined with newly successfully received segments for decoding. Thus, the transmission efficiency is increased. An analytical model using mean value analysis is proposed to study the performance of saturated TFH-MAC theoretically, and the transmission probability, collision probability, throughout, and frame service time are derived. Extensive simulation results have verified the analytical model and demonstrated the optimal traffic load and resource matrix dimension to maximize the network throughput.

源语言英语
主期刊名Proceedings - 2016 International Conference on Networking and Network Applications, NaNA 2016
出版商Institute of Electrical and Electronics Engineers Inc.
41-47
页数7
ISBN(电子版)9781467398039
DOI
出版状态已出版 - 9 9月 2016
活动2016 International Conference on Networking and Network Applications, NaNA 2016 - Hakodate City, Hokkaido, 日本
期限: 23 7月 201625 7月 2016

出版系列

姓名Proceedings - 2016 International Conference on Networking and Network Applications, NaNA 2016

会议

会议2016 International Conference on Networking and Network Applications, NaNA 2016
国家/地区日本
Hakodate City, Hokkaido
时期23/07/1625/07/16

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