Low latency handover scheme for 5G dual-connectivity scenario

Xuming PEI; Jianxin JIA; Hua QIAN; Zhenghang ZHU; Zhenyu TANG; Kai KANG

doi:10.11959/j.issn.1000-436x.2019090

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Low latency handover scheme for 5G dual-connectivity scenario

Correspondences | 更新时间：2024-06-05

- Low latency handover scheme for 5G dual-connectivity scenario
- Journal on Communications Vol. 40, Issue 4, Pages: 212-222(2019)
- 作者机构：
  
  1. 中国科学院上海高等研究院，上海 201210
  2. 上海海事大学信息工程学院，上海 210306
- 作者简介：
- 基金信息：
  
  The National Science and Technology Major Project(2017ZX03001019);The National Natural Science Foundation of China(61671436)
- DOI：10.11959/j.issn.1000-436x.2019090
  CLC： TN929.5
- Online First：2019-04，
  
  Published：25 April 2019
- 稿件说明：
移动端阅览
Xuming PEI, Jianxin JIA, Hua QIAN, et al. Low latency handover scheme for 5G dual-connectivity scenario[J]. Journal on Communications, 2019, 40(4): 212-222.
DOI：

Xuming PEI, Jianxin JIA, Hua QIAN, et al. Low latency handover scheme for 5G dual-connectivity scenario[J]. Journal on Communications, 2019, 40(4): 212-222. DOI： 10.11959/j.issn.1000-436x.2019090.

摘要

针对5G双连接切换中辅基站不变的场景，提出了一种新型切换机制。利用辅基站在切换过程中传输数据，以降低传统切换方式中因完全断开双连接导致数据传输中断所引起的时延。首先，对传统切换机制进行分析并进行问题定位；其次，提出和详细阐述新型切换机制的信令交互流程，并分别建立新型切换机制与传统切换机制中数据传输时序模型；最后，基于数据传输时序模型，用数学推导和仿真的方法对新型机制与传统机制进行对比评估，相关结果显示出新型机制在单个数据分组传输时延、数据分组平均传输时延和数据分组总传输时延三方面的优势。

Abstract

A novel handover scheme was proposed for the secondary node (SN) unchanged 5G dual-connectivity scenarios.In the proposed novel scheme

the SN connection was maintained for data packet transmission during the handover

however

both the main node (MN) and the SN were completely disconnected in the legacy scheme.The transmission delay during handover was decreased greatly by the proposed scheme.Firstly

the legacy handover scheme was analyzed and its deficiency was figured out.Then

the novel mechanism’s signaling interaction was elaborated and the time sequence models for the novel scheme and the legacy scheme were further established.Finally

based on the time sequence model

the performance evaluation processes were carried out in terms of mathematical modeling and experimental simulations.The analysis results demonstrate that the proposed novel scheme reduces the single packet transmission delay

the average transmission delay and the total transmission delay

and has good performance advantages.

关键词

Keywords

references

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