基于跳预约多址接入的认知无线电MAC协议  

HRMA-based cognitive radio MAC protocol

作　　者：魏飞[1] 

机构地区：[1]南京邮电大学,江苏南京210003

出　　处：《电力系统通信》2007年第6期31-34,共4页Telecommunications for Electric Power System

基　　金：教育部重点科技项目基金资助（206055）

摘　　要：认知无线电是一种能使无线器件感知本地空闲频谱的存在,自适应地使用这些空闲频谱进行通信的一种新兴技术。在一个由认知无线电节点组成的多跳网络中,由于空闲频谱随地点与时间动态变化,使得各节点可获得的空闲信道的数目和属性不仅存在差异,且不断变化,造成认知无线电的MAC设计变得相当困难。在文章中,基于跳预约多址接入技术提出一种动态信道的跳预约多址接入协议,在不需要公共信道的情况下,解决了信道有效接入与退让问题。Cognitive radio is a new technology that can sense the availability of local spare spectrum and uses it adaptively to communicate with each other. In a multi-hop network consisted of cognitive radio nodes, the number and attribute of available spare chan- nels of each node is not only different but also changes due to the dynamic change of spare spectrum according to time and location. All of these make the design of the Media Access Control （ MAC ） protocol difficult for cognitive radio. This paper presents a Dynamic Channel-Hop Reservation Multiple Access （DC-HRMA） protocol based on the original HRMA. It solves the problem affecting the channel access and quitting no need for common channels.

关 键 词：认知无线电 跳预约多址接入 媒体接入控制协议 

分 类 号：TN92[电子电信—通信与信息系统]