WO-2026092295-A1 - COMMUNICATION METHOD AND APPARATUS

WO2026092295A1WO 2026092295 A1WO2026092295 A1WO 2026092295A1WO-2026092295-A1

Abstract

The present application provides a communication method and apparatus, belonging to the technical field of communications, and used to improve a spectrum resource utilization rate. The method comprises: when the number of frequency domain units that a terminal device can simultaneously support for communication is less than or equal to the number of frequency domain units that a network device can configure for the terminal device, then the network device, by means of scheduling information, can schedule the terminal device to switch between different frequency domain units to transmit data; for example, a network device sends first scheduling information to the terminal device in a first frequency domain unit, the first scheduling information instructing the terminal device to switch to a second frequency domain unit; and after receiving, in the first frequency domain unit, the first scheduling information sent by the network device, the terminal device switches to the second frequency domain unit, and the network device transmits data to the terminal device in the second frequency domain unit, so that a frequency domain unit configured by the network device for the terminal device is fully utilized.

Inventors

HUANG, Xiuxuan
LI, XINXIAN
DING, Mengying

Assignees

华为技术有限公司

Dates

Publication Date: 20260507
Application Date: 20251023
Priority Date: 20241030

Claims (20)

A communication method, characterized in that the method includes: First scheduling information is sent to the terminal device in the first frequency domain unit, and the first scheduling information instructs the terminal device to switch to the second frequency domain unit. Data is transmitted between the terminal device and the second frequency domain unit; Wherein, the number of frequency domain units that the terminal device can simultaneously support communication is less than or equal to the number of frequency domain units that the network device can configure for the terminal device, and the frequency domain units that the network device can configure for the terminal device include the first frequency domain unit and the second frequency domain unit.
The method according to claim 1, characterized in that, before the first frequency domain unit sends the first scheduling information to the terminal device, it further includes: The terminal device receives handover capability information reported by the terminal device. The handover capability information indicates the frequency domain units that the terminal device supports for handover. The frequency domain units that the terminal device supports for handover include the first frequency domain unit and the second frequency domain unit.
The method according to claim 1 or 2, characterized in that, before the first frequency domain unit sends the first scheduling information to the terminal device, it further includes: The terminal device receives handover gap capability information reported by the terminal device, the handover gap capability information indicating the handover duration required for the terminal device to switch between different frequency domain units.
The method according to claim 3, characterized in that the method further comprises: An RRC message is sent to the terminal device. The RRC message includes a first indication information or a second indication information. The first indication information indicates that the handover duration is included in the time domain unit corresponding to the first frequency domain unit, and the second indication information indicates that the handover duration is included in the time domain unit corresponding to the second frequency domain unit.
According to the method of claim 4, the first frequency domain unit corresponds to the first time domain unit, the start time domain position of the first first time domain unit to the first time domain position of the last first time domain unit in the first time domain unit is used to carry the first scheduling information, and the first time domain position and the end time domain position of the last first time domain unit are separated by the switching duration.
According to the method of claim 4, the second frequency domain unit corresponds to the second time domain unit, the time interval between the starting time domain position of the first time domain unit in the second time domain unit and the second time domain position is the switching time, and the second time domain unit after the second time domain position is used to carry the data.
The method according to claim 1, characterized in that, after the second frequency domain unit transmits data with the terminal device, it further includes: The first frequency domain unit receives feedback information sent by the terminal device, the feedback information being used to indicate the result of the data transmission.
The method according to claim 1, characterized in that the method further comprises: The channel state information of the second frequency domain unit is periodically acquired.
The method according to claim 8, characterized in that the method further comprises: Based on the channel state information of the second frequency domain unit in the historical period, the channel state information of the second frequency domain unit in the current period is determined.
The method according to claim 1, characterized in that, Obtain the synchronization condition between the first frequency domain unit and the second frequency domain unit, wherein the synchronization condition includes at least one of the following: reception delay difference or reception power difference; The data transmission with the terminal device in the second frequency domain unit includes: According to the synchronization conditions, data is transmitted between the terminal device and the second frequency domain unit.
According to the method of claim 1, the first frequency domain unit or the second frequency domain unit is any one of the following: frequency band, bandwidth, partial bandwidth, carrier, carrier group, subcarrier, or subcarrier group.
A communication method, characterized in that it is applied to a terminal device and includes: The terminal device receives first scheduling information sent by the network device in the first frequency domain unit, and the first scheduling information instructs the terminal device to switch to the second frequency domain unit. Data is transmitted with the network device in the second frequency domain unit; Wherein, the number of frequency domain units that the terminal device can simultaneously support communication is less than or equal to the number of frequency domain units that the network device can configure for the terminal device, and the frequency domain units that the network device can configure for the terminal device include the first frequency domain unit and the second frequency domain unit.
The method according to claim 12, characterized in that, before the first frequency domain unit receives the first scheduling information sent by the network device, it further includes: The terminal device reports handover capability information to the network device. The handover capability information indicates the frequency domain units that the terminal device supports for handover. The frequency domain units that the terminal device supports for handover include the first frequency domain unit and the second frequency domain unit.
The method according to claim 12 or 13, characterized in that, before the first frequency domain unit receives the first scheduling information sent by the network device, it further includes: The handover gap capability information is reported to the network device, and the handover gap capability information indicates the handover duration required for the terminal device to switch between different frequency domain units.
The method according to claim 14, characterized in that the method further comprises: The network device receives an RRC message, which includes a first indication message or a second indication message. The first indication message indicates that the handover duration is included in the time domain unit corresponding to the first frequency domain unit, and the second indication message indicates that the handover duration is included in the time domain unit corresponding to the second frequency domain unit.
According to the method of claim 15, the first frequency domain unit corresponds to the first time domain unit, the start time domain position of the first first time domain unit to the first time domain position of the last first time domain unit in the first time domain unit is used to carry the first scheduling information, and the first time domain position and the end time domain position of the last first time domain unit are separated by the switching duration.
According to the method of claim 15, the second frequency domain unit corresponds to the second time domain unit, the interval between the starting time domain position and the second time domain position of the first time domain unit in the second time domain unit is the switching duration, and the second time domain unit after the second time domain position is used to carry the data.
The method according to claim 12, characterized in that the method further comprises: After the second frequency domain unit completes the data transmission with the terminal device, it switches to the first frequency domain unit to send feedback information to the network device. The feedback information is used to indicate the result of the data transmission.
The method according to claim 12, characterized in that the method further comprises: If the second scheduling information of the network device is received in the second frequency domain unit, the second scheduling information instructs the terminal device to switch to the first frequency domain unit; The data continues to be transmitted between the network device and the first frequency domain unit, or feedback information is sent to the network device from the first frequency domain unit, the feedback information being used to indicate the result of the data transmission.
The method according to claim 12, characterized in that the method further comprises: The synchronization conditions between the first frequency domain unit and the second frequency domain unit are obtained, and the synchronization conditions include at least one of the receive delay difference and the receive power difference. The data transmission with the network device in the second frequency domain unit includes: According to the synchronization conditions, data is transmitted with the network device in the second frequency domain unit.

Description

Communication methods and devices This application claims priority to Chinese Patent Application No. 202411540474.5, filed with the State Intellectual Property Office of China on October 30, 2024, entitled "Communication Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field This application relates to the field of communication technology, and in particular to communication methods and apparatus. Background Technology Currently, in New Radio (NR), carrier aggregation (CA) technology is used to increase the transmission bandwidth of individual terminal devices, integrate multi-frequency resources, and thus improve the overall network resource utilization. Specifically, carrier aggregation refers to combining spectrum resources of the same or different frequency bands and allocating them to terminal devices. For a terminal device to implement carrier aggregation, it needs to support carrier aggregation capabilities and possess corresponding receiver (RX) filtering capabilities. However, future communication scenarios may place higher demands on spectrum resource utilization, which current carrier aggregation cannot meet. Summary of the Invention This application provides a communication method and apparatus for improving the utilization rate of spectrum resources. To achieve the above objectives, this application adopts the following technical solution: Firstly, a communication method is provided. This method can be executed by a network device, or by a component of the network device, such as a processor, chip, or chip system of the network device, or by a logic module or software capable of implementing all or part of the network device. The method includes: sending first scheduling information to a terminal device in a first frequency domain unit, the first scheduling information instructing the terminal device to switch to a second frequency domain unit; and transmitting data with the terminal device in the second frequency domain unit. The number of frequency domain units that the terminal device can simultaneously support communication is less than or equal to the number of frequency domain units that the network device can configure for the terminal device, and the frequency domain units that the network device can configure for the terminal device include the first frequency domain unit and the second frequency domain unit. As can be seen from the method described in the first aspect, when the number of frequency domain units that the terminal device can support for communication simultaneously is less than or equal to the number of frequency domain units that the network device can configure for the terminal device, the network device can use scheduling information to schedule the terminal device to switch between different frequency domain units to transmit data, so as to make full use of the frequency domain units configured by the network device for the terminal device, thereby improving the utilization rate of spectrum resources. In one possible design scheme, the first frequency domain unit or the second frequency domain unit can be any of the following: frequency band, bandwidth, partial bandwidth, carrier, carrier group, subcarrier, carrier group, subcarrier, or subcarrier group. The specific choice can be flexible and unrestricted based on actual conditions. A carrier group can include multiple carriers, and the specific number can be flexibly set and unrestricted based on actual conditions. A subcarrier group can include multiple subcarriers, and the specific number can be flexibly set and unrestricted based on actual conditions. In one possible design, before the first frequency domain unit sends the first scheduling information to the terminal device, the method further includes: receiving handover capability information reported by the terminal device. The handover capability information indicates the frequency domain units that the terminal device supports for handover, and the frequency domain units supported for handover by the terminal device include the first frequency domain unit and the second frequency domain unit. This enables the network device to switch the terminal device to a frequency domain unit it supports, avoiding communication failures caused by switching the terminal device to an unsupported frequency domain unit due to a lack of knowledge about the terminal device's capabilities. In one possible design, before the first frequency domain unit sends the first scheduling information to the terminal device, the method further includes: receiving handover gap capability information reported by the terminal device. This handover gap capability information indicates the handover duration required for the terminal device to switch between different frequency domain units. The terminal device requires a handover duration to switch between different frequency domain units. The terminal device reports this handover duration, an