Hopping control channel MAC protocol for opportunistic spectrum access networks

doi:10.1016/S1005-8885(09)60527-6

Acta Metallurgica Sinica(English letters) ›› 2010, Vol. 17 ›› Issue (6): 65-71.doi: 10.1016/S1005-8885(09)60527-6

Hopping control channel MAC protocol for opportunistic spectrum access networks

傅景团¹,纪红¹,毛旭²

Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

收稿日期:2010-03-19 修回日期:2010-07-15 出版日期:2010-12-30 发布日期:2010-12-06
通讯作者: 傅景团 E-mail:fu2421@gmail.com
基金资助:
国家级.国家“863计划”项目;国家级.国家自然科学基金重大研究计划项目

Hopping control channel MAC protocol for opportunistic spectrum access networks

Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2010-03-19 Revised:2010-07-15 Online:2010-12-30 Published:2010-12-06

摘要/Abstract

摘要：

Opportunistic spectrum access (OSA) is considered as a promising approach to mitigate spectrum scarcity by allowing unlicensed users to exploit spectrum opportunities in licensed frequency bands. Derived from the existing channel-hopping multiple access (CHMA) protocol, we introduce a hopping control channel medium access control (MAC) protocol in the context of OSA networks. In our proposed protocol, all nodes in the network follow a common channel-hopping sequence; every frequency channel can be used as control channel and data channel. Considering primary users’ occupancy of the channel, we use a primary user (PU) detection model to calculate the channel availability for unlicensed users’ access. Then, a discrete Markov chain analytical model is applied to describe the channel states and deduce the system throughput. Through simulation, we present numerical results to demonstrate the throughput performance of our protocol and thus validate our work.

关键词:

channel hopping, MAC protocol, OSA, Markov chain

Abstract:

Key words:

channel hopping, MAC protocol, OSA, Markov chain

参考文献

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Hopping control channel MAC protocol for opportunistic spectrum access networks

Hopping control channel MAC protocol for opportunistic spectrum access networks

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