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A kind of secondary base station changing method, primary base station, secondary base station and terminal

A secondary base station and primary base station technology, applied in the field of secondary base stations and terminals, primary base stations, and secondary base station change methods, can solve problems that affect system mobility performance, large data interruption, and inability to well adapt to SN wireless resource management.

Active Publication Date: 2022-05-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the traditional handover process uses the method of interrupting the data transmission on the source side first, and then continues the service transmission after accessing the target base station, resulting in a large data interruption; while in the conditional handover process, it is in the The trigger condition for conditional handover is generated on the primary base station. In the conditional secondary base station addition / change (conditional SNaddition / change) operation, the SN change process initiated by the secondary base station is executed according to the trigger condition generated by the primary base station (Master Node, MN), but This will affect the mobility performance of the system, so that the execution of SN change cannot be well adapted to the radio resource management (Radio Resource Management, RRM) strategy of the SN itself
[0003] To sum up, in the prior art, in the case of dual connectivity or multiple connectivity, the change of the secondary base station (Secondary Node, SN) relies on network configuration messages to perform operations, resulting in unnecessary data interruption delays

Method used

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  • A kind of secondary base station changing method, primary base station, secondary base station and terminal
  • A kind of secondary base station changing method, primary base station, secondary base station and terminal
  • A kind of secondary base station changing method, primary base station, secondary base station and terminal

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example 1

[0115] Example 1, such as Figure 4 As shown, the SN change process initiated for the source SN:

[0116] Wherein, the terminal maintains a dual connection operation with the MN and the source SN;

[0117] At this point, the source SN can send an SN change required message to the MN, the SN change required message carries the candidate target SN list and the SN change trigger condition list of the candidate target SN list, of course, the SNchange trigger condition list includes each candidate target SN list The SN change trigger condition of the SN and / or the SN change trigger condition of each candidate SN cell under the candidate target SN.

[0118] Then, the MN saves the candidate target SN list carried in the SN change required message and the SN change trigger condition list of the candidate target SN list, and sends an SN addition request message to the candidate target SN;

[0119] Then, the candidate target SN will perform admission control, select a suitable candida...

example 2

[0124] Example 2, such as Figure 5 As shown, the internal SN change process initiated for the source SN:

[0125] Wherein, the terminal maintains a dual connection operation with the MN and the source SN;

[0126] At this point, the source SN can send an SN Modification required message to the MN, which carries the list of candidate target cells under the source SN, the SN change trigger conditions of each candidate target cell in the candidate target cell list, and the candidate target cell's configuration information.

[0127] Then, the MN saves the candidate target cell list carried by the SN Modification required message, the SN change trigger condition of each candidate target cell in the candidate target cell list and the configuration information of the candidate target cell;

[0128] Then, the MN sends an SN modification request message to the source SN, and the SN modification request message carries the security key information of the security key information of e...

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Abstract

An embodiment of the present invention provides a secondary base station change method, primary base station, secondary base station, and terminal, wherein the method includes: configuring the secondary base station to change the SN change trigger condition; sending the SN change trigger condition to the primary base station MN, so that the The MN sends the SN change trigger condition to the terminal, and the terminal determines whether to execute the SN change operation according to the SN change trigger condition. The embodiment of the present invention avoids the interruption delay in the process of SN change.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to a method for changing a secondary base station, a primary base station, a secondary base station, and a terminal. Background technique [0002] With the continuous evolution of the network, the mobility events between nodes under the traditional network architecture can no longer meet the higher requirements for mobility performance. For example, in a common mobile scenario, when a terminal moves to a place where the signal coverage of two network entities overlaps, the network will trigger a mobility event. At this time, the traditional handover process uses the method of interrupting the data transmission on the source side first, and then continues the service transmission after accessing the target base station, resulting in a large data interruption; while in the conditional handover process, it is in the The trigger condition for conditional handover i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W36/08
CPCH04W36/08H04W36/00
Inventor 张大钧许萌
Owner DATANG MOBILE COMM EQUIP CO LTD