LTE-A系统中继网络中接入点选择算法的研究  

Algorithms for LTE-A system relay network access point selection

作　　者：乔世娇 乔明闯[1] 陈晓军[1] 

机构地区：[1]西南石油大学现代教育技术中心,成都610500

出　　处：《信息技术》2016年第4期126-129,134,共5页Information Technology

摘　　要：LTE-A系统中引入中继技术后,用户可以根据不同的接入点选择算法选择接入基站或中继。传统的接入点选择算法只是直接对比接入链路和直接链路的链路质量,选择质量较好的一条链路接入,并没有考虑到选择接入中继时会在回程链路消耗额外的无线资源,因此并不能选择一个能够使系统单位带宽传输数据量较大的接入点进行接入。针对上述问题,文中提出了基于两跳链路的接入点选择算法,它综合考虑了链路质量和消耗的无线资源,然后选择相应的接入点。仿真结果表明新提出的接入点选择算法可以提高系统吞吐量。After the relay technology is introduced in the LTE-A system,the user can choose to access the base station or the repeater according to the different algorithms of access point selection. The traditional algorithms just compared directly the channel quality of direct link and access link,choose a better quality link to access,but did not take into account the wireless resources consumed in backhaul link when users select relay to access. So the traditional algorithms could not select the access point that can maximize the amount of data transmitted per unit bandwidth to access. In view of the above problems,this paper proposes the algorithm of access point selection based on two-hop link,it takes into account the channel quality of link and the resources consumed,then selects a better access point. The algorithm of access point selection based on two-hop link is simulated,the results show that it can improve system throughput compared with the traditional algorithms of access point selection.

关 键 词：LTE-A 中继技术 接入点选择 

分 类 号：TM929.5[电气工程—电力电子与电力传动]