电信科学 ›› 2012, Vol. 28 ›› Issue (6): 33-41.doi: 10.3969/j.issn.1000-0801.2012.06.010

• 研究与开发 • 上一篇    下一篇

LTE-Advanced系统中基于载波聚合的联合切换方案 *

赵季红1,2,李洋1,曲桦2,毛宏宝1   

  1. 1 西安邮电大学通信与信息工程学院 西安710061;
    2 西安交通大学电子与信息工程学院 西安710049
  • 出版日期:2012-06-15 发布日期:2017-06-28
  • 基金资助:
    国家自然科学基金资助项目;国家科技重大专项“新一代宽带无线移动通信网”基金资助项目;国家科技重大专项“新一代宽带无线移动通信网”基金资助项目;国家科技重大专项“新一代宽带无线移动通信网”基金资助项目

A Combined Handover Scheme Under CA Mode in LTE-Advanced

Jihong Zhao1,2,Yang Li1,Hua Qu2,Hongbao Mao1   

  1. 1 1. School of Telecommunication and Information Engineering, Xi'an University of Posts and Telecommunications, Xi'an 710061, China;
    2 School of Electronic and Information Engineering, Xi'an Jiaotong University, Xi'an 710049, China
  • Online:2012-06-15 Published:2017-06-28

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摘要：

在LTE-Advanced系统的关键技术研究及标准进展中，增强的移动性管理一直是研究的重点。新技术载波聚合的引入，一方面给系统的切换机制带来了新的挑战，另一方面可以优化切换策略，从而克服R8／9中切换机制导致的用户面数据中断。本文提出了一种LTE-A中基于载波聚合的联合切换方案，该方案利用切换执行时副成员小区的数据支持来克服切换过程中用户面的数据中断，从而实现切换过程中控制信息与用户数据的物理分离、联合传输。本文对LTE-A标准R10 的切换流程进行了补充，以便于容纳该方案。

关键词: LTE-Advanced, 切换控制, 联合切换, 载波聚合

Abstract:

On the progress of researching for key technology and standard of LTE-Advanced, enhanced mobility control and carrier aggregation（CA）are kept to be researching points. Injection of CA brings new challenge to handover procedure for one thing, for another it could be used to support handover mechanism to overcome outage probability of user plane from handover of R10. In this paper we propose a handover scheme under CA mode called combined handover scheme,which makes use of data supporting from secondary cell（SCell）during handover execution to overcome outage probability of handover in R10. We make supplement to handover procedure of R10 in order to accommodate the proposed scheme.

Key words: LTE-Advanced, handover control, combined handover, carrier aggregation

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