中国邮电高校学报(英文) ›› 2010, Vol. 17 ›› Issue (6): 65-71.doi: 10.1016/S1005-8885(09)60527-6

• Networks • 上一篇    下一篇

Hopping control channel MAC protocol for opportunistic spectrum access networks

傅景团1,纪红1,毛旭2   

  1. 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

  1. 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:

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:

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.

Key words:

channel hopping, MAC protocol, OSA, Markov chain