EP-4742813-A1 - THRESHOLD CONFIGURATION METHOD, CHARACTERISTIC SELECTION METHOD, AND COMMUNICATION DEVICE

EP4742813A1EP 4742813 A1EP4742813 A1EP 4742813A1EP-4742813-A1

Abstract

Embodiments of this application relate to the field of communication, and provide a threshold configuration method, a feature selection method, and a communication device. Through the threshold configuration method, a network side device can reasonably set a threshold for each MSG1 repetition number according to resource configuration cases on a BWP. Through the feature selection method, a user terminal can reasonably select random access features according to a measured link quality parameter and a threshold. The threshold configuration method is applied to a network device. The method includes: sending a first threshold and second thresholds, where the first threshold is used for distinguishing whether to perform MSG1 repetition, and the second thresholds are used for distinguishing MSG1 repetition numbers.

Inventors

ZHANG, MINGZHU

Assignees

Honor Device Co., Ltd.

Dates

Publication Date: 20260513
Application Date: 20240528

Claims (20)

A communication method, wherein the method comprises: obtaining random access resources, wherein the random access resources comprise random access resources for MSG1 repetition, and the MSG1 repetition comprises n MSG1 repetition numbers, wherein n is an integer greater than or equal to 1; and initiating a random access procedure according to the random access resources.
The method according to claim 1, wherein the obtaining random access resources comprises: selecting a bandwidth part BWP, and configuring the random access resources for the MSG1 repetition on the selected BWP; and the initiating a random access procedure according to the random access resources comprises: selecting a random access resource based on thresholds corresponding to the MSG1 repetition numbers, to initiate the random access procedure.
The method according to claim 2, wherein the configuring the random access resources for the MSG1 repetition on the selected BWP comprises: configuring the random access resources for the MSG1 repetition and random access resources for non-MSG1 repetition on the selected BWP; or configuring only the random access resources for the MSG1 repetition on the selected BWP.
The method according to any one of claims 1 to 3, wherein if a threshold corresponding to an MSG1 repetition number is configured, and measured signal quality is less than the threshold corresponding to an MSG1 repetition number, the MSG1 repetition number is selected to initiate the random access procedure.
The method according to claim 4, wherein the MSG1 repetition numbers comprise an MSG1 repetition number 2, an MSG1 repetition number 4, and an MSG1 repetition number 8; if a threshold corresponding to the MSG1 repetition number 8 is configured, and the measured signal quality is less than the threshold corresponding to the MSG1 repetition number 8, the MSG1 repetition number 8 is selected to initiate the random access procedure; if a threshold corresponding to the MSG1 repetition number 4 is configured, and the measured signal quality is less than the threshold corresponding to the MSG1 repetition number 4, the MSG1 repetition number 4 is selected to initiate the random access procedure; or if a threshold corresponding to the MSG1 repetition number 2 is configured, and the measured signal quality is less than the threshold corresponding to the MSG1 repetition number 2, the MSG1 repetition number 2 is selected to initiate the random access procedure.
The method according to claim 3, wherein when the random access resources for the MSG1 repetition and the random access resources for the non-MSG1 repetition on the selected BWP are configured, if the measured signal quality is greater than a threshold corresponding to any MSG1 repetition number, the non-MSG1 repetition is selected.
The method according to claim 3, wherein when only the random access resources for the MSG1 repetition are configured on the selected BWP, if the measured signal quality is greater than a threshold corresponding to any MSG1 repetition number, an MSG1 repetition number whose repetition number is smallest is selected.
The method according to claim 1, wherein the initiating a random access procedure according to the random access resources comprises: selecting, when a contention free random access resource is configured, a random access resource according to a first fallbackable feature to initiate the random access procedure, wherein the first fallbackable feature comprises at least one of RedCap and MSG1 repetition.
The method according to claim 8, wherein the selecting a random access resource according to a first fallbackable feature to initiate the random access procedure comprises: selecting, when the first fallbackable feature is applied to the current random access procedure, a random access resource associated with only the first fallbackable feature to initiate the random access procedure.
The method according to claim 8 or 9, wherein the selecting a random access resource according to a first fallbackable feature to initiate the random access procedure comprises: selecting, when the first fallbackable feature is applied to the current random access procedure and if the random access resource associated with only the first fallbackable feature does not exist in the configured random access resources, a random access resource that is not associated with any feature to initiate the random access procedure.
The method according to claim 8, wherein the selecting a random access resource according to a first fallbackable feature to initiate the random access procedure comprises: selecting, when the first fallbackable feature is the RedCap and the MSG1 repetition, a random access resource associated with only the RedCap and the MSG1 repetition to initiate the random access procedure, wherein the random access resource is associated with a first MSG1 repetition number, and the first MSG1 repetition number is an MSG1 repetition number in the current random access procedure.
The method according to claim 11, wherein the selecting a random access resource according to a first fallbackable feature to initiate the random access procedure comprises: selecting, when the first fallbackable feature is the RedCap and the MSG1 repetition and if the random access resource associated with only the RedCap and the MSG1 repetition does not exist in the configured random access resources, a random access resource that is not associated with any feature to initiate the random access procedure.
The method according to claim 8, wherein the selecting a random access resource according to a first fallbackable feature to initiate the random access procedure comprises: selecting, when the first fallbackable feature is the MSG1 repetition, a random access resource associated with only the MSG1 repetition to initiate the random access procedure, wherein the random access resource is associated with a first MSG1 repetition number, and the first MSG1 repetition number is an MSG1 repetition number in the current random access procedure.
The method according to claim 13, wherein the selecting a random access resource according to a first fallbackable feature to initiate the random access procedure comprises: selecting, when the first fallbackable feature is the MSG1 repetition and if the random access resource associated with only the MSG1 repetition does not exist in the configured random access resources, a random access resource that is not associated with any feature to initiate the random access procedure.
The method according to claim 1, wherein the initiating a random access procedure according to the random access resources comprises: selecting, when a contention free random access resource is configured, a random access resource according to a subset of a first fallbackable feature to initiate the random access procedure, wherein the first fallbackable feature comprises at least one of RedCap and MSG1 repetition.
The method according to claim 15, wherein the selecting a random access resource according to a subset of a first fallbackable feature to initiate the random access procedure comprises: selecting, when the first fallbackable feature is applied to the current random access procedure, a random access resource associated with only the subset of the first fallbackable feature to initiate the random access procedure.
The method according to claim 1, wherein the initiating a random access procedure according to the random access resources comprises: selecting, when at least one random access resource is available, a random access resource according to a feature priority to initiate the random access procedure.
The method according to claim 17, wherein the first fallbackable feature is RedCap and a first MSG1 repetition number, and available random access resources comprise at least one of the following random access resources: a random access resource associated with only the RedCap and the first MSG1 repetition number; or a random access resource associated with only the RedCap; or a random access resource associated with only the first MSG1 repetition number, wherein the first MSG1 repetition number is an MSG1 repetition number in the current random access procedure.
The method according to claim 18, wherein the selecting a random access resource according to a feature priority to initiate the random access procedure comprises: selecting, when the random access resource associated with only the RedCap and the first MSG1 repetition number is available, the random access resource associated with only the RedCap and the first MSG1 repetition number to initiate the random access procedure.
The method according to claim 18, wherein the selecting a random access resource according to a feature priority to initiate the random access procedure comprises: selecting, when the random access resource associated with only the RedCap and the first MSG1 repetition number is unavailable, the random access resource associated with only the RedCap to initiate the random access procedure; or selecting the random access resource associated with only the first MSG1 repetition number to initiate the random access procedure.

Description

This application claims priority to Chinese Patent Application No. 202311007079.6, filed with the China National Intellectual Property Administration on August 10, 2023 and entitled "THRESHOLD CONFIGURATION METHOD, FEATURE SELECTION METHOD, AND COMMUNICATION DEVICE", which is incorporated herein by reference in its entirety. TECHNICAL FIELD Embodiments of this application relate to the communication field, and in particular, to a threshold configuration method, a feature selection method, and a communication device. BACKGROUND Random access is a necessary process of establishing a radio link between a user terminal (User Equipment, UE) and a network side device in a communication system. The network side device is an access network device, such as a base station. Through the random access, the user terminal may establish the radio link with the network side device. Before the user terminal initiates random access to the network side device, the user terminal first receives configuration information broadcast by the network side device, and completes initialization based on the configuration information. The configuration information may include a threshold corresponding to a parameter representing link quality. The user terminal may determine an MSG1 (Message1) repetition number in the random access procedure by using the threshold. The MSG1 repetition number is one of important features in the random access procedure. The user terminal may determine the MSG1 repetition number according to the measured link quality parameter and the threshold; and then, select a resource according to the determined MSG1 repetition number and other random access features that may exist. A resource needed in the random access procedure is usually configured in a BWP (Bandwidth Part, bandwidth part), and there may be a plurality of resource configuration cases on the BWP. Therefore, the network side device needs to properly set a threshold for each MSG1 repetition number according to the resource configuration cases on the BWP, and the user terminal needs to properly select a random access feature according to the measured link quality parameter and the threshold. SUMMARY Embodiments of this application provide a threshold configuration method, a feature selection method, and a communication device. Through the threshold configuration method, a network side device can reasonably set a threshold for each MSG1 repetition number according to resource configuration cases on a BWP. Through the feature selection method, a user terminal can reasonably select random access features according to a measured link quality parameter and a threshold. According to a first aspect, provided is a threshold configuration method, applied to a network device. The method includes: sending a first threshold and second thresholds, where the first threshold is used for distinguishing whether to perform MSG1 repetition, and the second thresholds are used for distinguishing MSG1 repetition numbers. In a possible implementation, the first threshold and the second threshold are configured by using a first configuration parameter, the first configuration parameter includes the corresponding threshold configured for each of the different MSG1 repetition numbers, and the first threshold is a threshold corresponding to a lowest repetition number or a lowest coverage level repetition number of the different MSG1 repetition numbers; and the second thresholds are thresholds of repetition numbers other than the lowest MSG1 repetition number of the different MSG1 repetition numbers. In a possible implementation, the first threshold is configured by using a second configuration parameter, and the second thresholds are configured by using a third configuration parameter. In a possible implementation, the first threshold is configured only when an RA resource set of non-MSG1 repetition is available. In a possible implementation, when n MSG1 repetition numbers are configured, a quantity of the second thresholds is n-1. According to a second aspect, provided is a threshold configuration method, applied to a network device. The method further includes: sending third thresholds, where the third thresholds are corresponding thresholds respectively configured for different MSG1 repetition numbers. In a possible implementation, when n MSG1 repetition numbers are configured, a quantity of the third thresholds is n. According to a third aspect, provided is a feature selection method, applied to a terminal device. The method includes: receiving a first threshold and a second threshold; determining, based on the first threshold, whether to perform MSG1 repetition; and determining an MSG1 repetition number based on the second threshold. According to a fourth aspect, an electronic device is provided. The electronic device includes one or more processors and one or more memories. The one or more memories are coupled to the one or more processors, and the one or more memories store