US-12621695-B2 - Reference signal processing method, network device, and terminal device

Abstract

A measurement configuration method, includes receiving measurement trigger information comprising event trigger information or periodic measurement configuration information, and one or a combination of the following information: a measurement quantity (M) that needs to be reported and a measurement quantity (T) for triggering a measurement event; and sorting and reporting beams in a cell based on the measurement quantity (M) that needs to be reported or the measurement quantity (T) for triggering a measurement event.

Inventors

• Bingzhao LI
• Xuelong Wang
• Junren Chang
• Lingshuai Kong

Assignees

• HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date

20260505

Application Date

20220517

Priority Date

20171116

Claims (20)

1. 1 . A method applied for a terminal device, comprising: obtaining gap configuration information, reference signal configuration information, and bandwidth part (BWP) configuration information, wherein the reference signal configuration information is different from the BWP configuration information, wherein the gap configuration information comprises period information of a first gap and offset information of the first gap, wherein the first gap is configured to be associated with some reference signals, wherein the reference signal configuration information is for a reference signal, and wherein the BWP configuration information is for at least one BWP configured for the terminal device; determining whether the reference signal belongs to the some reference signals associated with the first gap; in response to determination that the reference signal belongs to the some reference signals associated with the first gap: after the obtaining the gap configuration information, the reference signal configuration information, and the BWP configuration information, determining whether a frequency domain location of the reference signal and an active BWP meet a first predetermined condition, wherein the active BWP is in the at least one BWP; and in response to determination that the frequency domain location of the reference signal and the active BWP meet the first predetermined condition, performing measurement of the reference signal without the first gap, or in response to determination that the frequency domain location of the reference signal and the active BWP do not meet the first predetermined condition, performing measurement of the reference signal with the first gap in a duration of the first gap, wherein the duration of the first gap is determined based on the period information of the first gap and the offset information of the first gap, wherein the first predetermined condition comprises: that the frequency domain location of the reference signal is within the active BWP, that center frequencies of the active BWP and the reference signal are the same, and that subcarrier spacings of the active BWP and the reference signal are the same.
2. 2 . The method according to claim 1 , wherein the reference signal configuration information comprises at least one of: a type parameter of the reference signal, a period parameter of the reference signal, or a frequency domain location parameter of the reference signal, the type parameter of the reference signal indicates the reference signal is a synchronization signal (SS) or a channel state information reference signal (CSI-RS), the period parameter of the reference signal indicates a sending period of the reference signal, and the frequency domain location parameter of the reference signal indicates the frequency domain location at which the reference signal is sent to the terminal device.
3. 3 . The method according to claim 1 , wherein the BWP configuration information comprises: frequency information of the at least one BWP, bandwidth information of the at least one BWP, or a correspondence between the reference signal and the at least one BWP.
4. 4 . The method according to claim 1 , further comprising: determining the duration of the first gap based on a start time of the first gap and a length of the first gap, wherein the start time of the first gap is determined according to a start frame number of the first gap and a start subframe number of the first gap, and the start frame number of the first gap and the start subframe number of the first gap are calculated according to: SFN1 mod T1=FLOOR(gapOffset/10), and Subframe1=gapOffset mod 10 , wherein SFN1 represents the start frame number of the first gap, T1 represents a period of the first gap indicated by the period information, gapOffset represents an offset of the first gap indicated by the offset information, FLOOR() represents a round-down operation, and mod represents a modulo operation; and wherein Subframe1 represents the start subframe number of the first gap.
5. 5 . The method according to claim 4 , wherein the length of the first gap is configured by a network device for the terminal device.
6. 6 . The method according to claim 1 , wherein the gap configuration information further comprises frequency information associated with the first gap, and wherein the frequency information indicates the terminal device to measure, in the first gap, a target reference signal associated with the frequency information.
7. 7 . An apparatus applied for a terminal device, comprising: at least one processor; and a non-transitory computer-readable medium including computer-executable instructions that, when executed by the at least one processor, cause the apparatus to perform operations including: obtaining gap configuration information, reference signal configuration information, and bandwidth part (BWP) configuration information, wherein the reference signal configuration information is different from the BWP configuration information, wherein the gap configuration information comprises period information of a first gap and offset information of the first gap, wherein the first gap is configured to be associated with some reference signals, wherein the reference signal configuration information is for a reference signal, and wherein the BWP configuration information is for at least one BWP configured for the terminal device; determining whether the reference signal belongs to the some reference signals associated with the first gap; in response to determination that the reference signal belongs to the some reference signals associated with the first gap: after the obtaining the gap configuration information, the reference signal configuration information, and the BWP configuration information, determining whether a frequency domain location of the reference signal and an active BWP meet a first predetermined condition, wherein the active BWP is in the at least one BWP; and in response to determination that the frequency domain location of the reference signal and the active BWP meet the first predetermined condition, performing measurement of the reference signal without the first gap, or in response to determination that the frequency domain location of the reference signal and the active BWP do not meet the first predetermined condition, performing measurement of the reference signal with the first gap in a duration of the first gap, wherein the duration of the first gap is determined based on the period information of the first gap and the offset information of the first gap, wherein the first predetermined condition comprises: that the frequency domain location of the reference signal is within the active BWP, that center frequencies of the active BWP and the reference signal are the same, and that subcarrier spacings of the active BWP and the reference signal are the same.
8. 8 . The apparatus according to claim 7 , wherein the reference signal configuration information comprises at least one of: a type parameter of the reference signal, a period parameter of the reference signal, or a frequency domain location parameter of the reference signal, the type parameter of the reference signal indicates the reference signal is a synchronization signal (SS) or a channel state information reference signal (CSI-RS), the period parameter of the reference signal indicates a sending period of the reference signal, and the frequency domain location parameter of the reference signal indicates the frequency domain location at which the reference signal is sent to the terminal device.
9. 9 . The apparatus according to claim 7 , wherein the BWP configuration information comprises: frequency information of the at least one BWP, bandwidth information of the at least one BWP, or a correspondence between the reference signal and the at least one BWP.
10. 10 . The apparatus according to claim 7 , further comprising: determining the duration of the first gap based on a start time of the first gap and a length of the first gap, wherein the start time of the first gap is determined according to a start frame number of the first gap and a start subframe number of the first gap, and the start frame number of the first gap and the start subframe number of the first gap are calculated according to: SFN1 mod T1=FLOOR(gapOffset/10), and Subframe1=gapOffset mod 10, wherein SFN 1 represents the start frame number of the first gap, T1 represents a period of the first gap indicated by the period information, gapOffset represents an offset of the first gap indicated by the offset information, FLOOR() represents a round-down operation, and mod represents a modulo operation; and wherein Subframe1 represents the start subframe number of the first gap.
11. 11 . The apparatus according to claim 10 , wherein the length of the first gap is configured by a network device for the terminal device.
12. 12 . The apparatus according to claim 7 , wherein the gap configuration information further comprises: frequency information associated with the first gap, and wherein the frequency information indicates the terminal device to measure, in the first gap, a target reference signal associated with the frequency information.
13. 13 . An apparatus applied for a network device, comprising: at least one processor; and a non-transitory computer-readable medium including computer-executable instructions that, when executed by the at least one processor, cause the apparatus to perform operations including: sending gap configuration information, reference signal configuration information, and BWP configuration information to a terminal device, wherein the reference signal configuration information is different from the BWP configuration information, wherein the gap configuration information comprises period information of a first gap and offset information of the first gap, wherein the first gap is configured to be associated with some reference signals, wherein the period information of the first gap and the offset information of the first gap are used for determining a duration of the first gap, the reference signal configuration information is for a reference signal, and wherein the BWP configuration information is for at least one BWP configured for the terminal device; determining whether the reference signal belongs to the some reference signals associated with the first gap; in response to determination that the reference signal belongs to the some reference signals associated with the first gap: after the sending the gap configuration information, the reference signal configuration information, and the BWP configuration information, determining whether a frequency domain location of the reference signal and an active BWP meet a first predetermined condition, wherein the active BWP is in the at least one BWP; and in response to determination that the frequency domain location of the reference signal and the active BWP meet the first predetermined condition, determining that the terminal device to perform measurement of the reference signal without the first gap, or in response to determination that the frequency domain location of the reference signal and the active BWP do not meet the first predetermined condition, performing measurement of the reference signal with the first gap in the duration of the first gap, wherein the first predetermined condition comprises: that the frequency domain location of the reference signal is within the active BWP, that center frequencies of the active BWP and the reference signal are the same, and that subcarrier spacings of the active BWP and the reference signal are the same.
14. 14 . The apparatus according to claim 13 , wherein the reference signal configuration information comprises at least one of: a type parameter of the reference signal, a period parameter of the reference signal, or a frequency domain location parameter of the reference signal, the type parameter of the reference signal indicates the reference signal is a synchronization signal (SS) or a channel state information reference signal (CSI-RS), the period parameter of the reference signal indicates a sending period of the reference signal, the frequency domain location parameter of the reference signal indicates the frequency domain location at which the reference signal is sent to the terminal device.
15. 15 . The apparatus according to claim 13 , wherein the BWP configuration information comprises: frequency information of the at least one BWP, bandwidth information of the at least one BWP, or a correspondence between the reference signal and the at least one BWP.
16. 16 . The apparatus according to claim 13 , wherein the terminal device determines the duration of the first gap based on a start time of the first gap and a length of the first gap, wherein the start time of the first gap is determined according to a start frame number of the first gap and a start subframe number of the first gap, and the start frame number of the first gap and the start subframe number of the first gap are calculated according to: SFN1 mod T1=FLOOR(gapOffset/10), and Subframe1=gapOffset mod 10, wherein SFN1 represents the start frame number of the first gap, T1 represents a period of the first gap, gapOffset represents an offset of the first gap, FLOOR() represents a round-down operation, and mod represents a modulo operation; and wherein Subframe1 represents the start subframe number of the first gap.
17. 17 . A method applied for a network device, comprising: sending gap configuration information, reference signal configuration information, and BWP configuration information to a terminal device, wherein the reference signal configuration information is different from the BWP configuration information, wherein the gap configuration information comprises period information of a first gap and offset information of the first gap, the period information of the first gap and the offset information of the first gap are used for determining a duration of the first gap, wherein the first gap is configured to be associated with some reference signals, wherein the reference signal configuration information is for a reference signal, and wherein the BWP configuration information is for at least one BWP configured for the terminal device; determining whether the reference signal belongs to the some reference signals associated with the first gap; in response to determination that the reference signal belongs to the some reference signals associated with the first gap: after the sending the gap configuration information, the reference signal configuration information, and the BWP configuration information, determining whether a frequency domain location of the reference signal and an active BWP meet a first predetermined condition, wherein the active BWP is in the at least one BWP; and in response to determination that the frequency domain location of the reference signal and the active BWP meet the first predetermined condition, determining that the terminal device to perform measurement of the reference signal without the first gap, or in response to determination that the frequency domain location of the reference signal and the active BWP do not meet the first predetermined condition, performing measurement of the reference signal with the first gap in the duration of the first gap, wherein the first predetermined condition comprises: that the frequency domain location of the reference signal is within the active BWP, that center frequencies of the active BWP and the reference signal are the same, and that subcarrier spacings of the active BWP and the reference signal are the same.
18. 18 . The method according to claim 17 , wherein the reference signal configuration information comprises at least one of: a type parameter of the reference signal, a period parameter of the reference signal, or a frequency domain location parameter of the reference signal, wherein the type parameter of the reference signal indicates the reference signal is an SS or a CSI-RS, the period parameter of the reference signal indicates a sending period of the reference signal, the frequency domain location parameter of the reference signal indicates the frequency domain location at which the reference signal is sent to the terminal device.
19. 19 . The method according to claim 17 , wherein the BWP configuration information comprises: frequency information of the at least one BWP, bandwidth information of the at least one BWP, or a correspondence between the reference signal and the at least one BWP.
20. 20 . The method according to claim 17 , wherein the terminal device determines the duration of the first gap based on a start time of the first gap and a length of the first gap, wherein the start time of the first gap is determined according to a start frame number of the first gap and a start subframe number of the first gap, and the start frame number of the first gap and the start subframe number of the first gap are calculated according to: SFN1 mod T 1 =FLOOR(gapOffset/10), and Subframe1=gapOffset mod 10, wherein SFN1 represents the start frame number of the first gap, T1 represents a period of the first gap, gapOffset represents an offset of the first gap, FLOOR() represents a round-down operation, and mod represents a modulo operation; and wherein Subframe1 represents the start subframe number of the first gap.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. patent application Ser. No. 16/563,401, filed on Sep. 6, 2019, now U.S. Pat. No. 11,356,877 issued on Jun. 7, 2022, which is a continuation of International Application No. PCT/CN2018/115830, filed on Nov. 16, 2018, which claims priority to Chinese Patent Application No. 201711140824.9, filed on Nov. 16, 2017. All of the afore-mentioned patent applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD This application relates to the field of communications technologies, and in particular, to a reference signal processing method, a network device, and a terminal device. BACKGROUND Currently, in discussion about a 5th generation (5G) mobile communications technology, there are two types of reference signals: synchronization signals (SS), and channel state information-reference signals (CSI-RS). The SS is a synchronization signal of a cell, and UE may obtain measurement quality of the cell based on measurement of the synchronization signal. The CSI-RS is a reference signal configured for UE, and the UE may also obtain quality of a cell based on measurement of the CSI-RS. In a 5G system, when a synchronization signal is sent, high-frequency multi-beam transmission needs to be considered. There is a synchronization signal set periodicity for synchronization signal sending. One synchronization signal set periodicity includes a plurality of synchronization signal bursts, and each synchronization signal burst includes a plurality of synchronization signal blocks. When a plurality of beams need to be sent in a cell, one beam may be sent in each synchronization signal block, and all beams are completely sent in one synchronization signal set periodicity. After a transmit end sends a synchronization signal, UE in an idle mode may perform measurement based on the SS, and UE in a connected mode may also perform measurement based on the SS. In addition to performing the measurement based on the SS, the UE in the connected mode may also perform measurement based on a CSI-RS. However, to measure the CSI-RS, the UE needs to obtain synchronization information of a cell first. Otherwise, it is impossible to learn an occurrence location of the CSI-RS, and measurement of the CSI-RS fails. In the current system, when user equipment (UE) performs inter-frequency measurement, a measurement gap needs to be configured. In the measurement gap, the following configuration is needed: a current working frequency is in an interrupt state. For UE that does not support working on two frequencies at the same time, if the UE needs to perform measurement on a non-working frequency, a working frequency needs to be interrupted, and then a target frequency is measured within the measurement gap of the UE. For example, the measurement gap may be 6 milliseconds (ms), and an occurrence period may be set to 40 ms, 80 ms, and the like. That is, every 40 ms or 80 ms, the UE can interrupt a current cell for 6 ms, to measure the target frequency. The UE can measure a reference signal of any bandwidth part (BWP) in the measurement gap without being limited by an active BWP. It can be learned from the foregoing analysis that in the current system, measurement gaps occur periodically, but in each measurement gap, ongoing data receiving and sending of UE need to be interrupted, thereby affecting the data transmission of the UE. SUMMARY Embodiments of this application provide a reference signal processing method, a network device, and a terminal device, to optimize measurement technologies. To resolve the foregoing technical problem, the following technical solutions are provided in the embodiments of this application. According to a first aspect, an embodiment of this application provides a reference signal processing method, including: determining, by a network device, a to-be-measured reference signal configured for a terminal device and at least one bandwidth part BWP configured for the terminal device, where a frequency domain location of the reference signal is within a bandwidth range of the at least one BWP; generating, by the network device, reference signal configuration information based on the to-be-measured reference signal, and generating BWP configuration information based on the at least one BWP; and sending, by the network device, the reference signal configuration information and the BWP configuration information to the terminal device. In some embodiments of this application, the network device determines the to-be-measured reference signal configured for the terminal device and the at least one BWP configured for the terminal device, where the frequency domain location of the reference signal is within the bandwidth range of the at least one BWP; the network device generates the reference signal configuration information based on the to-be-measured reference signal, and generates the BWP configuration information based on the at