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Method for switching base stations for user equipment (UE), base stations and UE

A technology for user equipment and base stations, which is applied in the field of base stations and user equipment, and can solve problems such as data interruption on the user plane.

Inactive Publication Date: 2015-01-21
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to provide a method for user equipment to switch base stations, a base station, and user equipment, so as to solve the problem of interruption of user plane data between the UE and the accessed secondary base station when the primary base station accessed by the UE changes

Method used

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  • Method for switching base stations for user equipment (UE), base stations and UE
  • Method for switching base stations for user equipment (UE), base stations and UE
  • Method for switching base stations for user equipment (UE), base stations and UE

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Experimental program
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Effect test

Embodiment 1

[0107] The inventor of the present application proposes that the main base station may need to be changed when the UE is moving, for example image 3 As shown, the signal quality between the serving cell (called the source cell) of the first base station (called the source base station in the mobile scenario) degrades, and the signal quality between the serving cell (called the target cell) of the third base station (called the target base station) The signal quality increases; at the same time, the UE is always within the coverage of the second base station, that is, the signal quality between the UE and the second base station remains good. In this case, after requesting the consent of the target base station, the source base station instructs the UE to leave the source cell and access the target cell, and needs to instruct the UE to continue data transmission with the second base station after accessing the target cell (that is, maintain the DC state ), to maintain data tra...

Embodiment 2

[0159] This embodiment provides a method for a user equipment to switch base stations, and its concept is the same as that of Embodiment 1 above. It is proposed for the situation that the primary cell in the primary base station of the UE is changed, and the operation is described from the primary base station side, mainly including the following operations:

[0160] When the dual-link UE is handed over to the primary cell under the primary base station, the primary base station determines that the UE maintains the connection and configuration with the secondary base station;

[0161] The primary base station instructs the UE to leave the source cell and access the target cell, while maintaining connection and configuration with the secondary base station.

[0162] Wherein, the primary base station sends RRC and an instruction to maintain the connection and configuration with the secondary base station to the UE, which means that the primary base station instructs the UE to le...

Embodiment 3

[0177] This embodiment provides a base station device that can implement the method in Embodiment 1 above, including at least a first unit and a second unit.

[0178] The first unit determines that the UE maintains the connection and configuration with the secondary base station when the primary base station of the dual-link UE is handed over to the current base station;

[0179] Among them, the first unit is divided into the following modules.

[0180] The receiving module receives the handover request sent by the primary base station and the information of the secondary base station of the UE;

[0181] Both the handover request received by the receiving module and the UE's secondary base station information can be included in a handover request message, or the UE's secondary base station information can be obtained from other existing messages or newly added messages sent by the primary base station.

[0182] The judging module judges whether the UE maintains the connection...

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Abstract

The invention discloses a method for switching base stations for user equipment (UE), the base stations and the UE, and relates to a mobile communication system deployed in a heterogeneous network. The method for switching the base stations for the UE includes the steps that when the main base station of the double-link UE is switched, and the target base station determines that the UE keeps connection with the secondary base station and configuration; the target base station builds connection with the UE while the UE keeps connection with the secondary base station and configuration. The invention further discloses other three methods for switching the base stations for the UE and the corresponding base stations and UE. According to the technical scheme, when the UE transmits data and / or moves, the user interface of the UE and the connected secondary base station will not be interrupted when the main base station connected to the UE is changed, and namely data transmission can continue. Thus, the performance and handing capacity of data transmission of the UE are improved, and the use efficiency of wireless resources is improved.

Description

technical field [0001] The present invention relates to a method for user equipment switching base stations in a mobile communication system, especially in a mobile communication system involving heterogeneous network deployment, a base station, and user equipment. Background technique [0002] Third Generation Partnership Projects (Third Generation Partnership Projects, referred to as 3GPP) believes that the deployment of small cells (Small Cell) and the enhancement of its capabilities are one of the most interesting topics in the development of future communication networks. At present, a scenario generally accepted by the communication industry is to deploy low-power nodes within the coverage area or at the border of a macro base station, and the two together form an Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network, referred to as E- The access network in the UTRAN system, so as to provide a joint data transmission ser...

Claims

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Application Information

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IPC IPC(8): H04W36/08H04W36/18
CPCH04W36/08H04W36/00692H04W76/27H04W76/15H04W36/0069H04L5/0055H04W88/06H04W88/08
Inventor 王昕和峰
Owner ZTE CORP
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