US-12627999-B2 - Cell measurement method AMD communications apparatus

US12627999B2US 12627999 B2US12627999 B2US 12627999B2US-12627999-B2

Abstract

A communication method and an apparatus. The method includes: a terminal device receives measurement configuration information from a first network device, where the measurement configuration information indicates the terminal device to measure a first cell. The terminal device sends a measurement result to a second network device, where the measurement result is obtained by the terminal device by measuring the first cell based on the measurement configuration information, and the measurement result indicates that the terminal device obtains a signal of the first cell through measurement or does not obtain a signal of the first cell through measurement. Based on the indication, of the measurement result, that the terminal device obtains the signal of the first cell through measurement or does not obtain the signal of the first cell through measurement, whether coverage of the first cell needs to be corrected may be further determined.

Inventors

Yedan Wu
Tingting GENG

Assignees

HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20221028
Priority Date: 20200430

Claims (20)

1 . A communication method comprising: receiving measurement configuration information from a first network device, wherein the measurement configuration information indicates a terminal device to measure a first cell; sending a measurement result to a second network device, wherein the measurement result is obtained by the terminal device by measuring the first cell based on the measurement configuration information, and the measurement result indicates that the terminal device obtains a signal of the first cell through measurement or does not obtain a signal of the first cell through measurement; wherein the method further comprises: sending capability information of the terminal device to the first network device; wherein capabilities of the terminal device are classified into a plurality of levels, each level of the plurality of levels represents a signal elevation angle measurement error or a precision corresponding to a measurement frequency band on which the terminal device is configured to perform the measurement, and measurement configuration information for the terminal device is configured based on the capability information of the terminal device.
2 . The communication method according to claim 1 , wherein the measurement configuration information further indicates the terminal device to report a signal elevation angle of the first cell, and the measurement result further comprises the signal elevation angle of the first cell.
3 . The communication method according to claim 1 , wherein the measurement configuration information further indicates the terminal device to report location information of the terminal device, and the measurement result further comprises the location information of the terminal device.
4 . The communication method according to claim 1 , wherein the measurement configuration information further indicates time at which the terminal device measures the first cell, and the measurement result further comprises information about the time at which the terminal device measures the first cell.
5 . The communication method according to claim 1 , wherein the capability information of the terminal device comprises at least one of a cell that the terminal device can measure, a measurement frequency band on which the terminal device can perform measurement, or a signal elevation angle measurement error corresponding to the measurement frequency band on which the terminal device can perform measurement.
6 . The communication method according to claim 1 , wherein the first cell is a serving cell of the terminal device or a neighboring cell of the serving cell of the terminal device.
7 . The communication method according to claim 1 , wherein the first cell is a satellite cell.
8 . The communication method according to claim 1 , wherein the measurement configuration information comprises an identifier of the first cell, and the identifier comprises at least one of a cell global identifier (CGI), a physical cell identifier (PCI), a frequency, a network device identifier, or a satellite type of a cell.
9 . A communication method comprising: determining measurement configuration information, wherein the measurement configuration information indicates a terminal device to measure a first cell and report that the terminal device obtains a signal of the first cell through measurement or the terminal device does not obtain a signal of the first cell through measurement; sending the measurement configuration information to the terminal device; and wherein the method further comprises: receiving capability information of the terminal device; wherein capabilities of the terminal device are classified into a plurality of levels, each level of the plurality of levels represents a signal elevation angle measurement error or a precision corresponding to a measurement frequency band on which the terminal device is configured to perform the measurement, and measurement configuration information for the terminal device is configured based on the capability information of the terminal device.
10 . The communication method according to claim 9 , wherein the measurement configuration information further indicates at least one of the following: the terminal device to report a signal elevation angle of the first cell, the terminal device to report location information of the terminal device, or time at which the terminal device measures the first cell.
11 . The communication method according to claim 9 , wherein the capability information of the terminal device comprises at least one of a cell that the terminal device can measure, a measurement frequency band on which the terminal device can perform measurement, or a signal elevation angle measurement error corresponding to the measurement frequency band on which the terminal device can perform measurement.
12 . The communication method according to claim 9 , wherein the first cell is a serving cell of the terminal device or a neighboring cell of the serving cell of the terminal device.
13 . The communication method according to claim 9 , wherein the first cell is a satellite cell.
14 . The communication method according to claim 9 , wherein the measurement configuration information comprises an identifier of the first cell, and the identifier comprises at least one of a cell global identifier (CGI), a physical cell identifier (PCI), a frequency, a network device identifier, or a satellite type of a cell.
15 . A communication apparatus comprising: circuitry comprising one or more processors; and a memory coupled to the circuitry and configured to store software that, when executed by the circuitry, configures the circuitry to: receive measurement configuration information from a first network device, wherein the measurement configuration information indicates a terminal device to measure a first cell; send a measurement result to a second network device, wherein the measurement result is obtained by the terminal device by measuring the first cell based on the measurement configuration information, and the measurement result indicates that the terminal device either obtains a signal of the first cell through measurement or does not obtain a signal of the first cell through measurement; and send capability information of the terminal device to the first network device; wherein capabilities of the terminal device classified into a plurality of levels, wherein each level of the plurality of levels represents a signal elevation angle measurement error or a precision corresponding to a measurement frequency band on which the terminal device is configured to perform the measurement, and measurement configuration information for the terminal device is configured based on the capability information of the terminal device.
16 . The communication apparatus according to claim 15 , wherein the measurement configuration information further indicates the terminal device to report a signal elevation angle of the first cell, and the measurement result further comprises the signal elevation angle of the first cell.
17 . The communication apparatus according to claim 15 , wherein the measurement configuration information further indicates the terminal device to report location information of the terminal device, and the measurement result further comprises the location information of the terminal device.
18 . The communication apparatus according to claim 15 , wherein the measurement configuration information further indicates time at which the terminal device measures the first cell, and the measurement result further comprises information about the time at which the terminal device measures the first cell.
19 . The communication apparatus according to claim 15 , wherein the capability information of the terminal device comprises at least one of: a cell that the terminal device can measure, a measurement frequency band on which the terminal device can perform measurement, or a signal elevation angle measurement error corresponding to the measurement frequency band on which the terminal device can perform measurement.
20 . The communication apparatus according to claim 15 , wherein the first cell is a satellite cell.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2021/091343, filed on Apr. 30, 2021, which claims priority to Chinese Patent Application No. 202010367143.1, filed on Apr. 30, 2020. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD The embodiments relate to the field of communication technologies, a communication method, and an apparatus. BACKGROUND In satellite communication, coverage of a cell is generally large. For example, a cell diameter ranges from 50 km to 1,000 km. Because a satellite is far away from the earth, an antenna direction angle of the satellite is very important. Slight deviation causes a location of a cell projected to the ground to deviate by tens of kilometers to hundreds of kilometers. Therefore, it is very important to ensure that the antenna direction angle of the satellite does not deviate. An orbit altitude of a low-earth orbit (LEO) satellite is 160 km to 2,000 km. The LEO satellite flies around the earth at a high speed of nearly 7 km/s. Cells projected by the LEO satellite to the ground include two modes: a moving cell and a fixed cell. The moving cell means that the cell projected by the LEO satellite to the ground moves with the satellite. Generally, when an antenna of the LEO satellite is perpendicular to the ground, the cell projected by the LEO satellite to the ground is a moving cell. Regardless of whether the LEO satellite is used as an independent base station or a relay base station, the moving cell moves along with the LEO satellite, and a relative distance between the LEO satellite and a terminal device keeps changing. After a period of time, a signal of the LEO satellite may not be capable of covering the terminal device. If network deployment is relatively complete, there is a next LEO satellite to cover the terminal device. Because a satellite system is spherical, the next LEO satellite may come from various angles. The fixed cell means that the cell projected by the LEO satellite to the ground is stationary relative to the ground. Different LEO satellites adjust antenna direction angles to cover a same area on the ground. As shown in FIG. 1, when a LEO satellite cannot cover the area, another LEO satellite instead covers the area. Consequently, in cells in the foregoing two modes, once the antenna direction angle of the satellite deviates, severe cell deviation occurs. Especially in a scenario in which a LEO cell is a fixed cell, an antenna direction angle of a satellite is continuously changed to ensure that coverage of the cell projected to the ground remains unchanged. This is difficult to implement and is easy to cause errors. SUMMARY The embodiments may provide a communication method and an apparatus, to correct an error in cell coverage. According to a first aspect, an embodiment may provide a communication method. The method may be performed by a terminal device or may be performed by a chip having a function of the terminal device. This is not limited herein. The method includes: receiving measurement configuration information from a first network device, where the measurement configuration information indicates the terminal device to measure a first cell; and sending a measurement result to a second network device, where the measurement result is obtained by the terminal device by measuring the first cell based on the measurement configuration information, and the measurement result indicates that the terminal device obtains a signal of the first cell through measurement or does not obtain a signal of the first cell through measurement. According to the foregoing method, the terminal device is configured to measure the first cell. Based on the indication, of the measurement result, that the terminal device obtains the signal of the first cell through measurement or does not obtain the signal of the first cell through measurement, whether coverage of the first cell needs to be corrected may be further determined. Therefore, the foregoing method may be used effectively for correcting an error in cell coverage, and the method has low costs, and may be further applied to a scenario in which a self-correction mechanism of a satellite fails. The measurement configuration information may further indicate the terminal device to report a signal elevation angle of the first cell, and the measurement result further includes the signal elevation angle of the first cell. The measurement configuration information may indicate the terminal device to report the signal elevation angle of the first cell, and whether an antenna direction angle corresponding to the first cell needs to be adjusted may be determined based on the signal elevation angle of the first cell in the measurement result. The measurement configuration information may further indicate the terminal device to report location information of the terminal device, and th