Switching method and device

A handover command and reconfiguration technology, applied in the field of communication, can solve the problems of measurement report or handover command handover failure, so as to improve the mobility performance and solve the effect of handover failure

Active Publication Date: 2021-07-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present disclosure provide a handover method and device to at least solve the problem of handover failure caused by failure to send measurement reports or handover commands in the related art

Method used

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  • Switching method and device
  • Switching method and device
  • Switching method and device

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Embodiment 1

[0031] In this embodiment, a switching method is provided, figure 1 is a flowchart of a handover method according to an embodiment of the present disclosure, such as figure 1 As shown, the process includes the following steps:

[0032] Step S102, the user equipment UE receives the radio resource control reconfiguration message sent by the source base station, wherein the radio resource control reconfiguration message includes a list of target cells for the UE to perform conditional handover, and each of the list of target cells for conditional handover The information of the target cell includes at least one of the following: frequency point information of the target cell, a physical cell identity of the target cell, a conditional handover command of the target cell generated by the target cell, at least one measurement configuration identification information, and the measurement configuration identification information uses To instruct the UE to perform conditional handover...

Embodiment 1

[0071]In the conditional handover, in order to avoid the failure of sending the measurement report or the handover command, the UE reports the measurement report before the "actual handover condition" is met, that is, when the "pre-handover preparation condition" is met. To achieve this goal, the "preparation condition for handover in advance" is more lenient than the "actual handover condition". For example, taking the configuration of A4 event (the signal quality of the neighboring cell is higher than the threshold) as an example, if the threshold for meeting the "actual handover condition" is Th1 , the threshold for satisfying the "preparation condition for handover in advance" is Th2, and Th2 Figure 6 Prepare a flow diagram for a conditional switch switch, including:

[0072] S410 / S410', the UE reports a measurement report to the source base station when the "advanced handover preparation condition" is met.

[0073] When the base station configures measurement, a frequency...

Embodiment 2

[0082] In the conditional handover, after receiving the conditional handover command (included in the RRCReconfiguration generated by the source cell, as described in step S440 of the first embodiment), the UE does not immediately execute the handover, but continues to stay in the source cell. The target cell in the conditional handover target cell list is measured, and when it is judged that a target cell satisfies the "conditional handover execution condition" of the cell indicated in RRCReconfiguration, the UE performs handover and accesses the target cell. As described in step S440 of the first embodiment, the RRCReconfiguration message generated by the source cell includes identification information for indicating the measurement configuration of the "conditional handover execution condition" of each target cell, such as measID, if the measurement result of a target cell satisfies the Based on the reporting condition of the report configuration (reportConfig) associated wi...

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Abstract

The present disclosure provides a handover method and device, wherein the method includes: a user equipment UE receives a radio resource control reconfiguration message sent by a source base station, wherein the radio resource control reconfiguration message includes the target for conditional handover of the UE A cell list, the information of each target cell in the target cell list for conditional handover includes at least one of the following: frequency point information of the target cell, physical cell identity of the target cell, and a conditional handover command of the target cell generated by the target cell . At least one piece of measurement configuration identification information, where the measurement configuration identification information is used to indicate the conditions for the UE to perform conditional handover in the target cell; the UE performs handover according to the radio resource control reconfiguration message. Through the present disclosure, the problem of handover failure caused by the failure to send the measurement report or the handover command in the related art is solved, and the mobility performance is improved.

Description

technical field [0001] The present disclosure relates to the communication field, and in particular, to a handover method and device. Background technique [0002] Mobile performance is one of the most important indicators in wireless communication systems. The industry has been committed to improving mobile performance in wireless communication systems. For example, 3GPP has been continuously discussing and evaluating how to improve mobile performance, including reducing the probability of handover failure and reducing ping-pong probability etc. [0003] Taking the handover process of LTE as an example, in the handover based on wireless signal quality, whether it is the most basic handover process (basic handover) or Make-before-Break (MBB for short), no random access Handover (RACH-less HO) and other enhanced handover processes are triggered when the "actual handover condition (mobility condition) (actual handover / mobility condition)" is met, that is to say, handover comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W24/10
CPCH04W36/0011H04W24/10H04W36/0085H04W36/08H04W36/00H04W36/0083H04W36/305H04W76/27
Inventor 施小娟黄河刘静
Owner ZTE CORP
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