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BWP switching method

A technology of automatic handover and handover request message, applied in the field of communication, can solve the problems of frequent BWP handover and BWP inconsistency, and achieve the effect of avoiding frequent fallback and saving DCI signaling overhead.

Pending Publication Date: 2022-01-28
北京长焜科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a method for BWP switching, which is used to solve the problem of BWP inconsistency caused by DCI missing detection and the problem of frequent BWP switching

Method used

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Examples

Experimental program
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Embodiment

[0041] The method for BWP switching includes:

[0042] When there is business data to be transmitted, the base station sends DCI signaling to notify the terminal to perform BWP switching, and switch to a non-default BWP to send data;

[0043]When the terminal performs data transmission on a non-default BWP, the terminal automatically starts a timer bwp-InactivityTimer to trigger the fallback of the BWP. Among them, the terminal resets and runs the Timer according to the monitoring situation of the physical downlink control channel PDCCH. When data transmission After completion, if PDCCH cannot be detected, bwp-InactivityTimer starts to run. If PDCCH is detected before bwp-InactivityTimer times out, bwp-InactivityTimer is reset; the terminal has not detected PDCCH before bwp-InactivityTimer times out, and bwp-InactivityTimer When the timeout expires, the terminal automatically switches to the default BWP, and starts to monitor PDCCH and data transmission on the default BWP.

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PUM

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Abstract

The invention discloses a BWP switching method, which comprises the following steps that: 1, a terminal works in a default BWP, and when the terminal transmits a data service, if the default BWP is not matched with the data service, the terminal sends a BWP switching request message to a base station; 2, when the base station receives the BWP switching request message sent by the terminal equipment, the base station issues a DCI signaling to inform a terminal user to perform BWP switching to a target BWP; and 3, when the terminal carries out data transmission on a non-default BWP, the terminal automatically starts a timer bwp-Inactivity Timer, when the bwp-Inactivity Timer is overtime, the BWP is automatically triggered to fall back to the default BWP, and PDCCH monitoring and data transmission on the default BWP are started. According to the method provided by the invention, the time of BWP fallback is controlled by using one Timer, so that unnecessary frequent fallback can be avoided, and meanwhile, unnecessary DCI signaling overhead and PDCCH blind detection of the terminal can be saved.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a BWP (BandWidth Part, partial bandwidth) switching method. Background technique [0002] BWP (BandWidth Part, partial bandwidth) is one of the most important new concepts introduced by 5G NR. Its core idea is to define an access bandwidth that is smaller than the cell system bandwidth and the terminal bandwidth processing capacity. It is carried out within this smaller bandwidth, so as to achieve more flexible, more efficient, and lower power consumption terminal operations in the 5G large bandwidth system. The maximum single-carrier system bandwidth of LTE is 20MHz, and the single-carrier bandwidth capability of the terminal is also 20MHz. There is no situation where the terminal capability is smaller than the cell system bandwidth. In the 5G NR system, the maximum carrier bandwidth is greatly increased, but the increase in terminal bandwidth capability cannot...

Claims

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Application Information

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IPC IPC(8): H04W72/04H04W72/12
CPCH04W72/0453H04W72/12
Inventor 黄海旭李春旭
Owner 北京长焜科技有限公司
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