Measurement method, terminal, device, and access network device
This application provides a measurement method, a terminal device, and an access network device. The measurement method includes: measuring, by a terminal device, signal quality of a plurality of beams, where the signal quality of the plurality of beams is obtained by using synchronization signal blocks; the signal quality of the plurality of beams includes signal quality of a same beam at different moments, and the plurality of beams belong to one cell; and obtaining, by the terminal device, signal quality of the cell based on the signal quality of the plurality of beams. In this way, cell measurement based on a synchronization signal is implemented, and the signal quality of the cell obtained based on the signal quality of the plurality of beams at the different moments is more accurate.
1. A measurement method, comprising:
obtaining, by a terminal device, time-frequency resource configuration information of K beams of a cell, K being greater than or equal to 1;
obtaining, by the terminal device, a first signal quality based on indication information by using a signal quality of M beams in the K beams, M≤K, the indication information is carried in a configuration of a measurement event and the indication information indicating whether a channel state information-reference signal (CSI-RS) or a synchronization signal block is used for triggering the measurement event; and
determining, by the terminal device, based on the first signal quality, whether to trigger the measurement event.
2. The method according to claim 1 , further comprising:
receiving, by the terminal device, the indication information from an access network device.
3. The method according to claim 1 , wherein
the indication information indicates that the terminal device uses the CSI-RS to perform event evaluation.
4. The method according to claim 1 , wherein the obtaining the first signal quality by using the signal quality of the M beams in the K beams comprises:
separately detecting, by the terminal device based on time-frequency resource configuration information of each of the M beams, reference signals sent on the M beams, to obtain the signal quality of the M beams; and
obtaining the first signal quality based on the signal quality of the M beams,
the reference signal being a CSI-RS, the configuration information of each of the M beams corresponding to resource configuration information of the CSI-RS, and the resource configuration information of each CSI-RS comprising information about a corresponding cell.
5. The method according to claim 1 , wherein determining, based on the first signal quality, whether to trigger the measurement event, comprises:
comparing, by the terminal device, based on the first signal quality and a quality threshold, the quality threshold being configured by an access network device; and
determining, by the terminal device, whether to trigger the measurement event, according to a result of the comparing.
6. A measurement configuration method, comprising:
sending, by a network device, time-frequency resource configuration information of K beams of a cell to a terminal device, K being greater than or equal to 1; and
sending, by the network device, a configuration of a measurement event to the terminal device, the configuration of the measurement event carrying indication information which indicates whether the terminal device uses a channel state information-reference signal (CSI-RS) or a synchronization signal block for triggering the measurement event.
7. The method according to claim 6 , comprising:
sending, by the network device, a reference signal, the reference signal being a CSI-RS, the configuration information of each of the K beams corresponding to resource configuration information of the CSI-RS, and the resource configuration information of each CSI-RS comprising information about a corresponding cell.
8. An apparatus, comprising:
a processor; and
a non-transitory memory, wherein the memory stores execution instructions; and
wherein when the processor executes the execution instructions the apparatus is enabled to perform the following operations:
obtaining time-frequency resource configuration information of K beams of a cell, wherein K is greater than or equal to 1;
obtaining a first signal quality based on indication information by using a signal quality of M beams in the K beams, wherein M≤K, the indication information is carried in a configuration of a measurement event from an access network device and the indication information indicates whether a channel state information-reference signal (CSI-RS) or a synchronization signal block is used for triggering the measurement event; and
determining, based on the first signal quality, whether to trigger the measurement event.
9. The apparatus according to claim 8 , wherein when the processor executes the execution instructions the apparatus is enabled to perform the further operation:
receiving the indication information from the access network device.
10. The apparatus according to claim 8 , wherein
the indication information indicates that a terminal device uses the CSI-RS to perform event evaluation.
11. The apparatus according to claim 8 , wherein the operation of obtaining the first signal quality by using the signal quality of the M beams in the K beams comprises:
separately detecting, based on time-frequency resource configuration information of each of the M beams, reference signals sent on the M beams, to obtain the signal quality of the M beams; and obtaining the first signal quality based on the signal quality of the M beams, wherein
the reference signal is a CSI-RS, the configuration information of each of the M beams corresponds to resource configuration information of the CSI-RS, and the resource configuration information of each CSI-RS comprises information about a corresponding cell.
12. The apparatus according to claim 8 , wherein the operation of determining, based on the first signal quality, whether to trigger the measurement event, comprises:
comparing the first signal quality and a quality threshold, wherein the quality threshold is configured by the access network device; and
determining whether to trigger the measurement event according to a result of the comparing.
13. A apparatus, comprising:
a processor; and
a non-transitory memory, wherein the memory stores execution instructions; and wherein when the processor executes the execution instructions the apparatus is enabled to perform the following operations:
sending time-frequency resource configuration information of K beams of a cell to a terminal device, wherein K is greater than or equal to 1; and
sending a configuration of a measurement event to the terminal device, wherein the configuration of the measurement event carrying indication information, which indicates whether the terminal device uses a channel state information-reference signal CSI-RS or a synchronization signal block for triggering the measurement event.
14. The apparatus according to claim 13 , wherein when the processor executes the execution instructions the apparatus is enabled to perform the further operation:
sending a reference signal, wherein the reference signal is a CSI-RS, the configuration information of each of the K beams corresponds to resource configuration information of the CSI-RS, and the resource configuration information of each CSI-RS comprises information about a corresponding cell.