基于认知流量的中继协作MAC机制  

Relay cooperative MAC mechanism based on cognitive traffic

作　　者：杜杨[1] 李云[2] 

机构地区：[1]广东省电信规划设计院有限公司,广东广州510630 [2]重庆邮电大学移动通信重点实验室,重庆400065

出　　处：《计算机工程与设计》2012年第9期3386-3390,共5页Computer Engineering and Design

基　　金：国家自然科学基金项目(61071118;60702055);国家教育部新世纪优秀人才支持计划基金项目(NCET-07-0914)

摘　　要：为了解决现有中继节点选取方法中,以信道状态信息作为中继节点的选取标准,忽略了节点业务的影响。在此基础上,提出了一种基于节点空闲时间的认知流量中继协作MAC(ITTC-MAC)机制。ITTC-MAC以节点等效数据传输速率作为中继节点的选取标准,建立和维护相关信息,动态选取最优的中继节点参与中继协作通信。NS2仿真结果表明,该机制可以有效提高网络的吞吐量。In order to resolve the existing methods of relay selection that the source selects the relay according to the channel state information,disregards the node＇s traffic condition.Based on these studies,a based on Idle Time with Traffic Cognitive relay cooperative MAC called ITTC-MAC is proposed.ITTC-MAC selects the relay according to the equivalent transmission time obtained by the relay,establish and maintain the relevant information,and dynamically selects the optimal relay node to participated in relay cooperation communications.Finally,the ITTC-MAC is simulated in NS2,the simulation results show that this mechanism can improve the network throughput effectively.

关 键 词：无线网络 协作通信 媒体接入控制 中继选择 网络模拟 

分 类 号：TN915[电子电信—通信与信息系统]