数字集群中信道争用问题的ALOHA协议研究  

ALOHA Protocol for Resolving Channel Collision in Digital Trunking System

作　　者：王彬[1] 罗海彬[1] 

机构地区：[1]哈尔滨工业大学通信技术研究所,黑龙江哈尔滨150001

出　　处：《通信技术》2008年第7期150-152,共3页Communications Technology

摘　　要：目前在数字集群通信系统中采用时分多址技术,通过信道共用的方法,较好的解决了频率资源紧张的问题。然而信道共用必须要解决好信息"碰撞"问题。ALOHA算法是运用比较普遍的一种解决信道争用算法,文中对ALOHA算法及其衍生算法进行研究,并提出优化的防碰撞算法,采用动态估算碰撞时隙数,满足在呼叫时以最大吞吐量进行工作。Channel- sharing has solved the problem that the frequency resources are scarce in the digital trunking system at present. However, the channel-sharing has to solve well the problem of information collision. ALOHA is an comparatively prevalent algorithm to solve the contending for channel resources. This paper describes the researches on the ALOHA algorithm and its derivative algorithm, and proposes an optimized algorithm for collision avoidance.

关 键 词：数字集群 信道争用 ALOHA 

分 类 号：TN929.5[电子电信—通信与信息系统]