摘要
异构网络共存和融合是未来无线通信系统发展的重要特征,因而异构无线网络环境下频谱接入方案是未来无线通信网络中的研究热点之一。本文分析现有的异构无线网络的频谱接入方案及存在的问题,并提出异构无线网络环境下基于认知无线电技术的两种新的频谱接入方案,即基于非授权用户优先级的载波侦听多址方案和具有保护信道的载波侦听多址方案。
Coexistence and integration of heterogeneous network are the significant feature in future wireless communication system.Therefore,spectrum access technology in heterogeneous wireless network environment is becoming a hot spot in the communication field.This paper analyzes the existing problems of CSMA scheme under the heterogeneous wireless networks.Furthermore,based on a cognitive radio technology,two CSMA schemes which are'unlicensed user spectrum access scheme in heterogeneous cognitive wireless networks environment'and'CSMA scheme with Guard Channel in the Heterogeneous Wireless Network'are proposed.
作者
姜敬元
赵冬雪
朱东弼
Jiang Jingyuan;Zhao Dongxue;Zhu Dongbi(College of Engineering,Yan Bian University,JiLin,Yanji 133002,China)
出处
《信息通信》
2019年第4期213-214,共2页
Information & Communications
关键词
异构网络
认知无线网络
优先级
保护信道
Heterogeneous Network
Cognitive Wireless Network
SU’s Priority
Guard Channel
