电信科学 ›› 2013, Vol. 29 ›› Issue (5): 51-56.doi: 10.3969/j.issn.1000-0801.2013.05.009

• 专题：LTE技术与应用 • 上一篇    下一篇

TD-LTE网络上行CoMP方案研究与外场试验

王启星1,何丽峰1,郑毅1,胡臻平1,刘光毅1,林兴2,李蕾3   

  1. 1 中国移动通信有限公司研究院 北京 100053
    2 中国移动通信集团江苏有限公司 南京 210029
    3 爱立信（中国）通信有限公司 北京 100102
  • 出版日期:2013-05-15 发布日期:2017-06-19
  • 基金资助:
    新一代宽带无线移动通信网”国家科技重大专项基金资助项目

Research and Field Trial of Uplink Coordinated Multipoint Processing in TD-LTE Network

Qixing Wang1,Lifeng He1,Yi Zheng1,Zhenping Hu1,Guangyi Liu1,Xing Lin2,Lei Li3,Butovitsch Peter3   

  1. 1 China Mobile Research Institute，Beijing 100053，China
    2 China Mobile Group Jiangsu Co.，Ltd.，Nanjing 210029，China
    3 Ericsson（China）Communications Co.，Ltd.，Beijing 100102，China
  • Online:2013-05-15 Published:2017-06-19

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摘要：

TD-LTE采用同频组网，使得小区间干扰成为限制网络容量提升的主要瓶颈之一。TD-LTE规模试验的测试数据表明，终端有超过70%的概率会同时检测到多个小区的信号。多小区协作（CoMP）技术通过相邻多个小区对信号进行联合处理，可有效降低小区间干扰。介绍了几种上行CoMP的实现方案及仿真性能，并重点介绍在TD-LTE试验网络中开展上行CoMP外场试验的情况。测试结果表明，通过上行CoMP可将小区边缘用户上行吞吐率提升50%～100%，显著改善了用户体验。

关键词: TD-LTE, 小区间干扰, 上行多小区协作

Abstract:

TD-LTE is deployed in the same frequency band to improve spectral usage，which also makes the inter-cell interference（ICI）become one of the main bottlenecks of the network capacity. The test results of the large scale TD-LTE field trial demonstrate more than 70% UE could detect signals from multiple cells. The coordinated multi-point processing（CoMP）technology adopts several cell to jointly transmit/receive signals for UE，which could effectively reduce ICI. Several kinds of uplink CoMP scheme were studied. Especially，the field trial of the uplink CoMP in the realistic TD-LTE network was introduced. The test results show that the ce11-edge UE could achieve 50%～100% throughput gain via the uplink CoMP technology，which significantly improves the user experience.

Key words: TD-LTE, inter-cell interference, uplink coordinated multipoint processing

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