2.1 GHz频段LTE与WCDMA零缓冲区方案研究  

Research on Zero Buffer Zone Application Between LTE and WCDMA on 2.1 GHz

作　　者：王伟[1] 王新刚[2] 李新玥[1] 聂昌[1] 

机构地区：[1]中国联通网络技术研究院,北京100048 [2]中讯邮电咨询设计院有限公司,河南郑州450007

出　　处：《邮电设计技术》2017年第12期43-46,共4页Designing Techniques of Posts and Telecommunications

摘　　要：提出了一种LTE与WCDMA零缓冲区的频率使用方案,即在相邻的WCDMA和LTE小区配置频率的重合度在50%以下。并在宏网络和室分两大类场景,进行了验证测试。测试结果表明,该方案在重耕后仅对WCDMA系统上行有一点影响。考虑到移动业务上行业务量少,占空比小的特点,对上行的干扰容忍度相对较高。另外邻区的LTE系统可以采用优先调度与WCDMA非同频的RB进行上行业务的方法来降低对WCDMA上行的影响。因此,该方案可应用在上述两大类场景中,从而实现灵活的频率重耕,而无需考虑缓冲区的问题。It proposes the zero-buffer scheme between LTE and WCDMA. That is,the overlap ratio of the adjacent WCDMA and LTE cell frequency configuration is 50% or less. In view of this scheme,it compares LTE and WCDMA uplink and downlink performance before and after the re-farming in macro and indoor scenes,respectively. The results of the test show that the WCDMA uplink performance may only be affected in this scheme. However,considering characteristics of the mobile services with the small traffic and duty cycle,the uplink interference tolerance is relatively high. In addition,it can reduce the impact on the WCDMA uplink by priority scheduling the uplink RB of the different frequency with WCDMA in adjacent LTE cell. Therefore,this scheme can be applied in the above scenes,to achieve a flexible frequency re-farming,without having to consider the issue of the buffer zone.

关 键 词：LTE WCDMA 缓冲区 重耕 

分 类 号：TN929.5[电子电信—通信与信息系统]