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Handover method, terminal equipment, base station and system

A technology of terminal equipment and source base station, which is applied in the handover management field in the communication field, can solve the problems of long data interaction delay and inability to guarantee business data interaction delay, and achieve the effect of avoiding delay and improving processing efficiency

Active Publication Date: 2021-01-12
CHINA MOBILE COMM LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this process, since the terminal device cannot immediately perform data interaction with the target cell, especially when the target cell and the source cell are different-frequency cells, there may be a longer delay in data interaction between the terminal device and the target cell. Problem, it can be seen that in the existing technology, the delay of business data interaction in less processes cannot be guaranteed

Method used

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  • Handover method, terminal equipment, base station and system
  • Handover method, terminal equipment, base station and system
  • Handover method, terminal equipment, base station and system

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0052]The embodiment of the present invention provides a handover method, which is applied to terminal equipment, such asfigure 1 Shown, including:

[0053]Step 11: Receive a handover instruction from a source base station, where the handover instruction at least carries configuration information of a sounding reference signal (SRS, Sounding Reference Signal) configured by a target base station of the terminal device;

[0054]Step 12: Send an SRS based on the configuration information of the SRS in the handover instruction, where the SRS is used to enable the target base station to detect a timing advance (TA);

[0055]Step 13: Receive the target base station indication signaling containing at least TA from the source base station, and determine based on the TA in the target base station indication signaling to complete the uplink synchronization with the target base station, and switch to The target base station.

[0056]Here, the terminal device may be a mobile terminal, specifically, a mobil...

Embodiment 2

[0098]The embodiment of the present invention provides a handover method, which is applied to a source base station, such asimage 3 As shown, the method includes:

[0099]Step 31: Select a target base station for the terminal device, and receive the configuration information of the sounding reference signal SRS sent by the target base station;

[0100]Step 32: Add at least the configuration information of the SRS to the switching instruction, and send the switching instruction to the terminal device.

[0101]Here, the terminal device may be a mobile terminal, specifically, a mobile phone.

[0102]It should be pointed out that, before performing step 31, after the source base station selects the target base station of the target cell for the terminal device, the source base station may also prepare for handover. For example, it may include: The target base station sends a handover request, and after receiving the confirmation of the handover request fed back by the target base station, allocates...

Embodiment 3

[0126]The embodiment of the present invention provides a handover method, which is applied to a target base station, such asFigure 4 Shown, including:

[0127]Step 41: Configure the configuration information of the sounding reference signal SRS for the terminal device;

[0128]Step 42: Send the configuration information of the SRS to the source base station of the terminal device;

[0129]Step 43: Detect the SRS sent by the terminal device, determine the TA corresponding to the terminal device based on the detected SRS, and send the TA to the source base station of the terminal device.

[0130]Here, the terminal device may be a mobile terminal, specifically, a mobile phone.

[0131]It should be pointed out that the terminal device also needs to perform operations such as handover measurement. For example, it may include: the terminal device may measure the reference signal sent by at least one candidate base station according to the measurement configuration of the source base station, and obtain ...

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Abstract

The invention discloses a switching method and system, a terminal device and a base station. The method comprises the following steps: receiving a switching instruction sent by a source base station,wherein the switching instruction at least carries the configuration information of a sounding reference signal (SRS) configured by a target base station of the terminal device; sending the SRS basedon the configuration information of the SRS in the switching instruction, wherein the SRS is used for causing the target base station to detect periodic advance quantity (TA); and receiving a target base station indication instruction at least containing the TA sent by the source base station, and determining to accomplish the uplink synchronization with the target base station based on the TA inthe target base station indication instruction, and switching to the target base station.

Description

Technical field[0001]The present invention relates to handover management in the communication field, and in particular to a handover method, terminal equipment, base station and system.Background technique[0002]In the existing system, handover between cells can include several steps such as handover measurement, handover decision-making, and handover execution; especially when handover between cells, there may be a need to release the data from the source cell first. And then establish a connection with the target cell. During this process, the terminal device cannot immediately interact with the target cell for data, especially when the target cell and the source cell are inter-frequency cells, there may be a longer delay in the data interaction between the terminal device and the target cell. The problem can be seen that in the prior art, it is impossible to guarantee the delay of the business data interaction in a smaller process.Summary of the invention[0003]In view of this, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/08H04W36/18
CPCH04W36/0016H04W36/0055H04W36/08H04W36/18
Inventor 徐晓东
Owner CHINA MOBILE COMM LTD RES INST