认知无线通信中的排队过程  

Queuing Models for Access in Cognitive Wireless

作　　者：杨丰瑞[1] 盛魏巍[1] 李校林[1] 

机构地区：[1]重庆邮电大学,重庆400065

出　　处：《重庆科技学院学报（自然科学版）》2009年第4期137-139,共3页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：重庆市教育委员会科学技术研究项目(KJ080516)

摘　　要：回顾采用马尔科夫链分析已授权频带的认知无线电频谱接入特点,基于主用户和认知用户资源关系,分析认知用户可利用频谱资源。根据决定通信系统性能的两个重要因素,一是用户对资源的请求;二是可利用的资源数,提出了构建一个M/M/C排队模型。分析M/M/C排队模型中用户和资源数间的关系对通信系统性能的影响。To view Markon chain for spectrum access in cognitive wireless, the article analyzes spectrum resources to be used by cognitive users base on relation of primary users and cognitive users. The paper proposes a M/M/C queuing model according to two important factors which could decide the communication system performance. First is users＇request for resources.The second is to establish a M/M/C model by avaliable resources number. The model is＂ to analyze the influence of the relations of user-rate and the numbers of resource on communication system.

关 键 词：M/M/C排队系统 用户请求 忙期 离去率 信道数 

分 类 号：TN911[电子电信—通信与信息系统]