CN117397340A

CN117397340A - Method and device for measuring coherence bandwidth

Info

Publication number: CN117397340A
Application number: CN202280001336.2A
Authority: CN
Inventors: 罗星熠
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2024-01-12
Also published as: WO2023216166A1

Abstract

The embodiment of the disclosure discloses a method and a device for measuring coherence bandwidth, wherein the method comprises the following steps: the terminal equipment receives configuration information sent by the network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth; receiving a reference signal sent by network side equipment; and estimating a downlink channel according to the reference signal, and measuring the coherence bandwidth. Thus, the measurement of the coherence bandwidth can be satisfied in the case of coherent joint transmission.

Description

Method and device for measuring coherence bandwidth

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to a method and a device for measuring coherence bandwidth.

Background

In the related art, the coherence bandwidth is measured by performing channel measurement and acquisition through SRS (sounding reference signal ) according to channel reciprocity. However, in the case of the fr2 (frequency range 2) mTRP (transmission andreception point, transmission point) coherent joint transmission, since the downlink transmission is to transmit data through two TRP directions, an uplink channel through which the terminal device transmits the SRS in a certain direction may not be the same as a downlink channel through which the downlink transmission passes, and the terminal device is not supported to simultaneously transmit the uplink data in the two TRP directions at this time.

Therefore, in the case of coherent joint transmission, how to measure the coherence bandwidth is a problem to be solved.

Disclosure of Invention

The embodiment of the disclosure provides a method and a device for measuring coherence bandwidth, which can meet the measurement of coherence bandwidth under the condition of coherent joint transmission.

In a first aspect, an embodiment of the present disclosure provides a method for measuring coherence bandwidth, where the method is performed by a terminal device, and the method includes: receiving configuration information sent by network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth; receiving a reference signal sent by the network side equipment; and estimating a downlink channel according to the reference signal, and measuring the coherence bandwidth.

In the technical scheme, terminal equipment receives configuration information sent by network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth; receiving a reference signal sent by network side equipment; and estimating a downlink channel according to the reference signal, and measuring the coherence bandwidth. Thus, the measurement of the coherence bandwidth can be satisfied in the case of coherent joint transmission.

In a second aspect, an embodiment of the present disclosure provides another method for measuring coherence bandwidth, where the method is performed by a network device, and the method includes: transmitting configuration information to terminal equipment, wherein the configuration information is used for indicating the current measurement coherence bandwidth; and transmitting a reference signal for estimating a downlink channel and measuring a coherence bandwidth to the terminal equipment.

In a third aspect, an embodiment of the present disclosure provides a communication apparatus having a function of implementing part or all of the terminal device in the method described in the first aspect, for example, a function of the communication apparatus may be provided with a function in part or all of the embodiments of the present disclosure, or may be provided with a function of implementing any one of the embodiments of the present disclosure separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one implementation, the communication device may include a transceiver module and a processing module in a structure configured to support the communication device to perform the corresponding functions in the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the necessary computer programs and data of the communication device.

As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

In one implementation, the communication device includes: the receiving and transmitting module is configured to receive configuration information sent by the network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth; the transceiver module is further configured to receive a reference signal sent by the network side device; and the processing module is configured to estimate a downlink channel according to the reference signal and measure the coherence bandwidth.

In a fourth aspect, an embodiment of the present disclosure provides another communication apparatus, where the communication apparatus has a function of implementing part or all of the network side device in the method example described in the second aspect, for example, the function of the communication apparatus may be provided with a function in part or all of the embodiments of the present disclosure, or may be provided with a function of implementing any one of the embodiments of the present disclosure separately. The functions may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the functions described above.

In one implementation, the communication device may include a transceiver module and a processing module in a structure configured to support the communication device to perform the corresponding functions of the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds the necessary computer programs and data of the communication device.

In one implementation, the communication device includes: the receiving and transmitting module is configured to send configuration information to the terminal equipment, wherein the configuration information is used for indicating measurement coherence bandwidth; the transceiver module is further configured to send a reference signal for estimating a downlink channel and measuring a coherence bandwidth to the terminal device.

In a fifth aspect, embodiments of the present disclosure provide a communication device comprising a processor, which when invoking a computer program in memory, performs the method of the first aspect described above.

In a sixth aspect, embodiments of the present disclosure provide a communication device comprising a processor that, when invoking a computer program in memory, performs the method of the second aspect described above.

In a seventh aspect, embodiments of the present disclosure provide a communication apparatus comprising a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect described above.

In an eighth aspect, embodiments of the present disclosure provide a communication apparatus comprising a processor and a memory, the memory having a computer program stored therein; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the second aspect described above.

In a ninth aspect, embodiments of the present disclosure provide a communications apparatus comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor being configured to execute the code instructions to cause the apparatus to perform the method of the first aspect described above.

In a tenth aspect, embodiments of the present disclosure provide a communications device comprising a processor and interface circuitry for receiving code instructions and transmitting to the processor, the processor being configured to execute the code instructions to cause the device to perform the method of the second aspect described above.

In an eleventh aspect, an embodiment of the disclosure provides a data transmission system, where the system includes a communication device according to the third aspect and a communication device according to the fourth aspect, or where the system includes a communication device according to the fifth aspect and a communication device according to the sixth aspect, or where the system includes a communication device according to the seventh aspect and a communication device according to the eighth aspect, or where the system includes a communication device according to the ninth aspect and a communication device according to the tenth aspect.

In a twelfth aspect, an embodiment of the present invention provides a computer readable storage medium storing instructions for use by the terminal device, where the instructions, when executed, cause the terminal device to perform the method of the first aspect.

In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium, configured to store instructions for use by the network-side device, where the instructions, when executed, cause the network-side device to perform the method described in the second aspect.

In a fourteenth aspect, the present disclosure also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a fifteenth aspect, the present disclosure also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.

In a sixteenth aspect, the present disclosure provides a chip system comprising at least one processor and an interface for supporting a terminal device to implement the functionality referred to in the first aspect, e.g. to determine or process at least one of data and information referred to in the above-mentioned method. In one possible design, the chip system further includes a memory for holding computer programs and data necessary for the terminal device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In a seventeenth aspect, the present disclosure provides a chip system comprising at least one processor and an interface for supporting a network-side device to implement the functionality involved in the second aspect, e.g. to determine or process at least one of data and information involved in the above-described method. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the network-side device. The chip system can be composed of chips, and can also comprise chips and other discrete devices.

In an eighteenth aspect, the present disclosure provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a nineteenth aspect, the present disclosure provides a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background of the present disclosure, the following description will explain the drawings that are required to be used in the embodiments or the background of the present disclosure.

Fig. 1 is an architecture diagram of a communication system provided by an embodiment of the present disclosure;

Fig. 2 is a flowchart of a method for measuring coherence bandwidth provided by an embodiment of the present disclosure;

FIG. 3 is a flow chart of another method for measuring coherence bandwidth provided by an embodiment of the present disclosure;

FIG. 4 is a flow chart of yet another method for measuring coherence bandwidth provided by an embodiment of the present disclosure;

FIG. 5 is a flow chart of yet another method for measuring coherence bandwidth provided by an embodiment of the present disclosure;

fig. 6 is a block diagram of a communication device provided by an embodiment of the present disclosure;

FIG. 7 is a block diagram of another communication device provided by an embodiment of the present disclosure;

fig. 8 is a block diagram of a chip provided in an embodiment of the present disclosure.

Detailed Description

To facilitate an understanding of the disclosed embodiments, a brief description of several terms referred to in this disclosure will first be provided.

1. Channel reciprocity: in time division duplex (time division duplexing, TDD) mode, the uplink and downlink channels transmit signals on the same frequency domain resource, different time domain resources. The channel fading experienced by the signals on the uplink and downlink channels can be considered the same within a relatively short time (e.g., the coherence time of the channel propagation). This is the reciprocity of the uplink and downlink channels. Based on the reciprocity of the uplink and downlink channels, the network side device may measure the uplink channel according to an uplink reference signal, such as a sounding reference signal (sounding reference signal, SRS). And the downlink channel may be estimated from the uplink channel, so that a precoding matrix for downlink transmission, etc. may be determined.

However, in a frequency division duplex (frequency division duplexing, FDD) mode, since the band spacing of the uplink and downlink channels is far greater than the coherence bandwidth, the uplink and downlink channels do not have complete reciprocity, and determining the precoding matrix for downlink transmission using the uplink channel may not be able to adapt to the downlink channel. However, the uplink and downlink channels in FDD mode still have partial reciprocity, e.g., angle reciprocity and delay reciprocity. Thus, the angle and the time delay may also be referred to as reciprocity parameters.

2. Reference Signal (RS): the reference signal may also be referred to as pilot (pilot), reference sequence, etc. In the embodiments of the present disclosure, the reference signal may be a reference signal for channel measurement. For example, the reference signal may be a channel state information reference signal (channel state information reference signal, CSI-RS), a sounding reference signal (sounding reference signal, SRS), or the like. It should be understood that the above listed reference signals are merely examples and should not constitute any limitation to the present disclosure. The present disclosure does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functionality.

The reference signal in the embodiment of the disclosure, which may be referred to as a downlink reference signal, is a reference signal obtained after the network side device performs precoding on the reference signal based on the channel reciprocity parameter. Precoding may specifically include beamforming (beamforming) and/or phase rotation. Wherein beamforming may be achieved, for example, by precoding the reference signal based on one or more angle vectors. The phase rotation may be achieved, for example, by precoding the reference signal with one or more delay vectors. Precoding the downlink reference signal based on one or more angle vectors may also be referred to as loading the one or more angle vectors onto the downlink reference signal. Precoding the downlink reference signal based on the one or more delay vectors may also be referred to as loading the one or more delay vectors onto the downlink reference signal.

3. Subcarrier: the frequency domain occupies a section of bandwidth, and may be embodied as Resource Elements (REs).

4. PRB bundling size is used to indicate that a certain number of physical resource blocks (physical resource block, PRBs) are bonded. The group of physical resource blocks (physical resource block group, PRG) refers to a combination comprising a plurality of physical resource blocks (physical resource block, PRB). One PRG may correspond to one PRBbundling size. In the same PRG, the network side device usually uses the same precoding, and the terminal side performs joint channel estimation by using the PRG as a unit. In the embodiment of the disclosure, precoding adopted by a plurality of PRBs in the PRG is the same, and the terminal side still performs channel estimation by taking the PRG as a unit. It should be noted that in the embodiments of the present disclosure, PRG and PRB bundling size are interchangeable, i.e., the scheme applicable to PRG is equally applicable to PRB bundling size.

The terminal device moves from the center of the coverage area of one network side device (base station) to the edge area of the network side device due to the movement. The edge area is located within the coverage area of a plurality of network side devices, so that other signal transmission can cause strong interference to the terminal device, and the data transmission performance of the terminal device becomes poor. To improve data transmission performance of edge terminal devices, long term evolution (long term evolution, LTE) and New Radio (NR) introduce a multi-station cooperative transmission (multi-TRP) mechanism. Under the mechanism, a plurality of network side devices can provide services for the terminal devices at the same time, so that the interference originally caused by other network side devices can become useful signals, thereby improving the performance of the edge terminal device.

In the current multi-TRP transmission mechanism, according to channel state information (channel state information, CSI) from each network side device to a terminal device, whether data is transmitted by a base station of the plurality of network side devices for the terminal device or data is simultaneously transmitted by the plurality of network side devices for the terminal device may be dynamically selected. The former is called single-station transmission or dynamic transmission point selection (dynamic transmission point selection, DPS), and the latter is called multi-station joint transmission (joint transmission, JT). Specifically, the multi-station joint transmission in turn includes coherent joint transmission (coherent joint transmission, CJT) or incoherent transmission (non-coherent joint transmission, NCJT). In a network, CJT or NCJT is adopted, depending on the size of the mutual information delay between the network side devices. The CJT requires dynamic information interaction among a plurality of network side devices, can dynamically make a data scheduling decision according to information (such as CSI) of each network side device, and has higher interaction delay requirement on each network side device; the NCJT does not need dynamic interaction information among the network side devices, has low requirement on interaction time delay, and is more suitable for network deployment. In order to determine which mechanism of DPS or JT is adopted, the terminal device may measure and report the CSI under each mechanism according to the channel state information reference signals (CSI reference signal, CSI-RS) sent by each network device in the plurality of network devices, and then the network device performs a data scheduling decision; or, the terminal device may measure CSI under multiple transmission mechanisms according to CSI-RS sent by the network side device, and recommend a transmission mechanism to the network side device as reference information of a subsequent data scheduling decision.

In order to better understand a method and an apparatus for measuring coherence bandwidth according to an embodiment of the present disclosure, a communication system to which the embodiments of the present disclosure are applicable will be first described below.

Referring to fig. 1, fig. 1 is a schematic architecture diagram of a communication system 1 according to an embodiment of the disclosure. The number and form of the devices shown in fig. 1 are only for example and not limiting the embodiments of the disclosure, and two or more network side devices and two or more terminal devices may be included in the practical application. The communication system 1 shown in fig. 1 is exemplified as including a network-side device 11 and a terminal device 12.

It should be noted that the technical solution of the embodiment of the present disclosure may be applied to various communication systems. For example: a long term evolution (long term evolution, LTE) system, a fifth generation (5th generation,5G) mobile communication system, a 5G New Radio (NR) system, or other future new mobile communication systems, etc.

The network-side device 11 in the embodiment of the present disclosure is an entity for transmitting or receiving a signal at the network side. For example, the network-side device 101 may be an evolved NodeB (eNB), a transmission point (transmission reception point, TRP), a next generation NodeB (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (wireless fidelity, wiFi) system, or the like. The embodiment of the disclosure does not limit the specific technology and the specific equipment form adopted by the network side equipment. The network side device provided in the embodiments of the present disclosure may be composed of a Central Unit (CU) and a Distributed Unit (DU), where the CU may also be referred to as a control unit (control unit), and the structure of the CU-DU may be used to split a protocol layer of the network side device, for example, a base station, where functions of a part of the protocol layer are placed in the CU for centralized control, and functions of the rest part or all of the protocol layer are distributed in the DU, where the CU centrally controls the DU.

The terminal device 12 in the embodiments of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device may also be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), etc. The terminal device may be an automobile with a communication function, a smart car, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented reality (augmented reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned-driving (self-driving), a wireless terminal device in teleoperation (remote medical surgery), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), or the like. The embodiment of the present disclosure does not limit the specific technology and the specific device configuration adopted by the terminal device.

It may be understood that, the communication system described in the embodiments of the present disclosure is for more clearly describing the technical solutions of the embodiments of the present disclosure, and is not limited to the technical solutions provided in the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of new service scenarios, the technical solutions provided in the embodiments of the present disclosure are equally applicable to similar technical problems.

In version 16/17 (Rel-16/17), more discussion is made of mTRP, but the discussion is limited to non-correlated joint transmission (NC-JT), and joint transmission (C-JT) is not discussed. In actual networks, many existing networks may implement related joint transmissions, such as a centralized radio access network (Centralized radio access network, C-RAN) architecture and intra-station cooperation, etc.

In mTRP, coherent joint transmission (also called related joint transmission) may have more users (terminal devices) jointly scheduled, supporting MU-MIMO (multi-user multiple-input multiple-output) of more users (terminal devices). Compared with incoherent joint transmission, the method has larger system gain, and can obtain better performance especially for cell edge users. However, in the conventional protocol, at most 12 orthogonal DMRS (demodulation reference signal ) ports can be supported for MU-MIMO. Because MU-MIMO can support more terminal devices to obtain greater system gain when coherent joint transmission is to be supported in release 18 (Rel-18), more orthogonal DMRS ports need to be supported in Rel-18.

In order to increase the number of DMRS ports supported, it is considered to reduce the number of REs (resource elements) per DMRS port. But in this way the performance of the channel estimation is reduced. Also, for coherent joint transmission of mTRP, since the signal will be transmitted from two TRPs, there will be more delay paths, making the problem of frequency selectivity of the channel worse, which makes the performance of low density DMRS mapping scheme channel estimation potentially very poor.

For this problem, the size of the PRB (physical resourceblock ) bundling may be configured to be a larger value, and joint channel estimation by more PRBs may increase the performance of channel estimation. However, the size of PRB bundling cannot be arbitrarily set to a desired value, and many factors need to be considered, one of which is the coherence bandwidth, and the size of PRB cannot exceed the coherence bandwidth. Another approach is to determine whether to use this mapping method according to the coherence bandwidth of the channel, and if the coherence bandwidth is too small, it will not allow to configure a newly introduced low-density DMRS mapping method for the user, so as to avoid the problem of poor channel estimation performance. For this reason, a method of acquiring a coherence bandwidth is required.

Based on this, the embodiment of the disclosure provides a method for measuring coherence bandwidth, so as to measure coherence bandwidth under the condition of coherent joint transmission.

In the disclosed embodiments, "for indicating" may include for direct indication and for indirect indication. When describing a certain configuration information for indicating a, the configuration information may be included to directly indicate a or indirectly indicate a, and does not necessarily represent that a is carried in the configuration information.

The information indicated by the configuration information is called to-be-configured information, and in a specific implementation process, there are various ways of indicating the to-be-configured information, for example, but not limited to, the to-be-configured information may be directly indicated, such as the to-be-configured information itself or an index of the to-be-configured information. The information to be configured can also be indirectly indicated by indicating other information, wherein the other information and the information to be configured have an association relationship. It is also possible to indicate only a part of the information to be configured, while other parts of the information to be configured are known or agreed in advance. For example, the indication of the specific information may also be achieved by means of a pre-agreed (e.g., protocol-specified) arrangement sequence of the respective information, thereby reducing the indication overhead to some extent.

The information to be configured can be sent together as a whole or can be divided into a plurality of pieces of sub-information to be sent separately, and the sending periods and/or sending occasions of the sub-information can be the same or different. The specific transmission method is not limited by the disclosure. The transmission period and/or the transmission timing of the sub-information may be predefined, for example, predefined according to a protocol, or may be configured by the transmitting end device by transmitting configuration information to the receiving end device. The configuration information may include, for example, but not limited to, one or a combination of at least two of radio resource control signaling, medium access control (media access control, MAC) layer signaling, and physical layer signaling. Wherein radio resource control signaling such as packet radio resource control (radio resource control, RRC) signaling; the MAC layer signaling includes, for example, a MAC Control Element (CE); the physical layer signaling includes, for example, downlink control information (downlink control information, DCI).

The following describes a method and apparatus for measuring coherence bandwidth provided in the present disclosure in detail with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart of a method for measuring coherence bandwidth according to an embodiment of the disclosure.

As shown in fig. 2, the method is performed by a terminal device, and may include, but is not limited to, the steps of:

s21: receiving configuration information sent by network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth; and receiving the reference signal sent by the network side equipment.

It may be understood that in the embodiment of the present disclosure, the network side device sends configuration information to the terminal device, where the configuration information is used to indicate to measure the coherence bandwidth, so as to indicate the terminal device to measure the coherence bandwidth.

The network side equipment sends configuration information to the terminal equipment, and then sends a reference signal to the terminal equipment under the condition of indicating measurement coherence bandwidth.

Wherein the reference signal may be a channel state information reference signal (channel state information reference signal, CSI-RS).

In some embodiments, the configuration information includes at least one of:

measuring resource configuration information;

and reporting the resource configuration information.

In the embodiment of the disclosure, the configuration information includes measurement resource configuration information, or the configuration information includes reporting resource configuration information, or the configuration information includes measurement resource configuration information and reporting resource configuration information.

It will be appreciated that measurement resource configuration information may be used to determine the resource configuration used for measurement and reporting resource configuration information may be used to determine the resource configuration used when reporting the measurement results.

In some embodiments, the measurement resource configuration information is measurement configuration information of a channel state information indication reference signal, CSI-RS, the measurement configuration information of the CSI-RS comprising a first identifier, wherein the first identifier is used to indicate a measurement coherence bandwidth.

In an embodiment of the disclosure, measurement configuration information of a resource configuration information CSI-RS is measured, the measurement configuration information of the CSI-RS includes a first identifier, where the first identifier is used to indicate a measurement coherence bandwidth. The terminal equipment receives measurement configuration information of the CSI-RS sent by the network side equipment, and determines measurement coherence bandwidth according to a first identifier in the measurement configuration information of the CSI-RS.

In some embodiments, the reported resource configuration information includes a second identifier, the second identifier being used to indicate a measurement coherence bandwidth; or reporting the resource configuration information comprises reporting parameters, wherein the reporting parameters are used for indicating measurement coherence bandwidth.

In an embodiment of the disclosure, the reporting resource configuration information includes a second identifier, where the second identifier is used to indicate a measurement coherence bandwidth. The terminal equipment receives the report resource configuration information sent by the network side equipment, and determines the measurement coherence bandwidth according to the second identifier in the report resource configuration information.

In an embodiment of the disclosure, reporting the resource configuration information includes reporting parameters, where the reporting parameters are used to indicate a measurement coherence bandwidth. The terminal equipment receives the report resource configuration information sent by the network side equipment, and determines measurement coherence bandwidth according to report parameters in the report resource configuration information.

Illustratively, the reporting parameter may be reporting amount information (e.g., "reportquality" of RRC IE), which is configured as coherence bandwidth corherebandwidth for indicating measurement coherence bandwidth.

S22: and estimating a downlink channel according to the reference signal, and measuring the coherence bandwidth.

In the embodiment of the disclosure, a terminal device receives configuration information sent by a network side device, determines a measurement coherence bandwidth, receives a reference signal sent by the network side device, estimates a downlink channel according to the reference signal, and measures the coherence bandwidth.

Wherein, the coherence bandwidth has two definition modes, the downlink channel is recorded as H (f), and the autocorrelation function is R _H (Δf)＝E{H(f)H ^* (f+Δf) }, wherein in the first way, Δf when the autocorrelation function takes a value of 0.9 is defined as the coherence bandwidth. In the second way, Δf at which the autocorrelation function takes a value of 0.5 is defined as the coherence bandwidth. When the signal bandwidth is smaller than the coherence bandwidth, the signal passes through a flat fading channel; when the signal is less than the coherence bandwidth, the signal passes through a frequency domain selective channel. I.e. the frequency domain selectivity of the channel is characterized by the coherence bandwidth.

In some embodiments, if the first definition is adoptedDetermining coherence bandwidth

If a second definition is used: in the case of an autocorrelation function of 0.9, the coherence bandwidth is determined

Wherein,wherein,h _k BW is the bandwidth of the downlink channel, and k is a positive integer.

In the embodiment of the disclosure, in the case where the autocorrelation function is 0.5, the coherence bandwidth satisfies the relation:in the case where the autocorrelation function is 0.9, the coherence bandwidth satisfies the relation;wherein,wherein, h _k BW is the bandwidth of the downlink channel, and k is a positive integer.

In embodiments of the present disclosure, h _k The value range of k is the number of subcarriers contained in the bandwidth of the downlink channel for the time domain sampling value of the downlink channel.

In the embodiment of the disclosure, the coherence bandwidth in the case of coherent joint transmission may be measured, so as to determine whether to configure a newly introduced low-density DMRS mapping manner for the terminal device according to the coherence bandwidth, where the newly introduced low-density DMRS mapping manner has a smaller number of REs per DMRS port compared to the related art. Under the condition that the coherence bandwidth is too small, a newly introduced low-density DMRS mapping mode is not allowed to be configured for the terminal equipment, so that the situation that the channel estimation performance is too poor is avoided.

In addition, in the embodiment of the present disclosure, the size of the suitable PRB bundling may be determined according to the coherence bandwidth, and the performance of channel estimation may be increased by performing joint channel estimation through a suitable number of PRBs.

By implementing the embodiment of the disclosure, the terminal equipment receives configuration information sent by the network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth; receiving a reference signal sent by network side equipment; and estimating a downlink channel according to the reference signal, and measuring the coherence bandwidth. Thus, the measurement of the coherence bandwidth can be satisfied in the case of coherent joint transmission.

Referring to fig. 3, fig. 3 is a flowchart of another method for measuring coherence bandwidth according to an embodiment of the present disclosure.

As shown in fig. 3, the method is performed by a terminal device, and may include, but is not limited to, the steps of:

s31: receiving configuration information sent by network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth; and receiving the reference signal sent by the network side equipment.

S32: and estimating a downlink channel according to the reference signal, and measuring the coherence bandwidth.

The descriptions of S31 and S32 may be referred to the descriptions of the foregoing embodiments, and are not repeated here.

S33: and reporting the measurement result to network side equipment, wherein the measurement result comprises a coherence bandwidth.

In the embodiment of the disclosure, the terminal device receives the configuration information and the reference signal sent by the network side device, estimates the downlink channel according to the reference signal, measures the coherence bandwidth, and then reports measurement reception to the network side device, wherein the measurement result includes the coherence bandwidth.

In some embodiments, reporting the resource configuration information includes reporting the resource, where reporting the measurement result to the network side device includes: reporting the measurement result to the network side equipment on the reporting resource.

It can be understood that the network side device sends configuration information to the terminal device, where the configuration information includes reporting resource configuration information, where, when the reporting resource configuration information includes reporting resources, the terminal device receives the configuration information sent by the network side device, and may determine the reporting resources, where the reporting resources may be resources used when the network side device indicates the terminal device to report the measurement result.

In the embodiment of the disclosure, when the terminal device determines to report the resource, the measurement result can be reported to the network side device on the report resource.

In some embodiments, reporting the measurement result to the network side device on the reporting resource includes at least one of:

periodically reporting a measurement result to network side equipment on a Physical Uplink Control Channel (PUCCH) configured by Radio Resource Control (RRC) signaling;

semi-statically reporting a measurement result to network side equipment on a PUCCH configured by RRC signaling;

on a Physical Uplink Shared Channel (PUSCH) used for activating semi-static Downlink Control Information (DCI) scheduling, reporting a measurement result to network side equipment in a semi-static manner;

and on the PUSCH used for triggering the DCI scheduling of the aperiodic report, reporting the measurement result to the network side equipment aperiodically.

In the embodiment of the disclosure, the terminal device reports the measurement result to the network side device on the reporting resource, and may periodically report the measurement result to the network side device on the PUCCH (physicaluplink control chanel, physical uplink control channel) configured by RRC (radioresource control ) signaling.

In the embodiment of the disclosure, the terminal device reports the measurement result to the network side device on the reporting resource, and may semi-statically report the measurement result to the network side device on the PUCCH configured by the RRC signaling.

In the embodiment of the present disclosure, the terminal device reports the measurement result to the network side device on the reporting resource, and may report the measurement result to the network side device semi-statically on a PUSCH (physicaluplinkshared channel ) for activating semi-statically DCI (downlink control information ) scheduling.

In the embodiment of the disclosure, the terminal device reports the measurement result to the network side device on the reporting resource, and may report the measurement result to the network side device aperiodically on the PUSCH used for triggering DCI scheduling for aperiodic reporting.

It should be noted that the foregoing embodiments are merely illustrative, and are not intended to limit the scope of the embodiments of the disclosure, and the foregoing embodiments are not exhaustive, but are merely illustrative of some embodiments, and the embodiments may be implemented alone or in combination of two or more.

In some embodiments, reporting the measurement results to the network side device includes:

reporting a report value v to network side equipment by using N bits, and reporting the report valueOr (b)

Reporting a report value v to network side equipment by using M bits, and reporting the report value

Wherein SCS is subcarrier spacing, B _c For the coherence bandwidth, N, M are positive integers.

In the embodiment of the disclosure, the terminal device reports the measurement result to the network side device, and N bits may be used to report the report value v to the network side device, where the report value v is reportedWherein SCS is subcarrier spacing, B _c For the coherence bandwidth, N, M are positive integers.

In the embodiment of the disclosure, the terminal device reports the measurement result to the network side device, and may report the report value v to the network side device by using M bitsWherein SCS is subcarrier spacing, B _c For the coherence bandwidth, N, M are positive integers.

In the embodiment of the disclosure, the reporting precision is measured in one RB (resource block) to obtain the coherence bandwidth B _c Then, according to the configuration of the subcarrier spacing SCS, the report value is determinedReporting the report value v to the network side equipment by using N bits. Currently, a reporting value v can also be reported to the network side device by using one RE as precision and M bits

It should be noted that, in the embodiment of the present disclosure, the reported value v of other possible accuracy may also be reported, which is not limited to using one RB or one RE as the accuracy, but may also be other accuracy, and the embodiment of the present disclosure is not limited to this specifically.

Referring to fig. 4, fig. 4 is a flowchart of another method for measuring coherence bandwidth according to an embodiment of the present disclosure.

As shown in fig. 4, the method is performed by the network side device, and the method may include, but is not limited to, the following steps:

s41: and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the measurement coherence bandwidth.

S42: and transmitting a reference signal for estimating the downlink channel and measuring the coherence bandwidth to the terminal device.

In some embodiments, the configuration information includes at least one of:

measuring resource configuration information;

and reporting the resource configuration information.

By implementing the embodiment of the disclosure, the network side device sends configuration information to the terminal device, wherein the configuration information is used for indicating measurement coherence bandwidth; and transmitting a reference signal to the terminal equipment, wherein the reference signal is used for indicating the terminal equipment to estimate a downlink channel according to the reference signal and measuring the coherence bandwidth. Thus, the measurement of the coherence bandwidth can be satisfied in the case of coherent joint transmission.

Referring to fig. 5, fig. 5 is a flowchart of another method for measuring coherence bandwidth according to an embodiment of the present disclosure.

As shown in fig. 5, the method is performed by the network side device, and the method may include, but is not limited to, the following steps:

s51: and sending configuration information to the terminal equipment, wherein the configuration information is used for indicating the measurement coherence bandwidth.

S52: and transmitting a reference signal for estimating the downlink channel and measuring the coherence bandwidth to the terminal device.

S53: and receiving a measurement result reported by the terminal equipment, wherein the measurement result comprises a coherence bandwidth.

In some embodiments, reporting the resource configuration information includes reporting a resource, where receiving a measurement result reported by the terminal device includes: and receiving the measurement result reported by the reporting resource by the terminal equipment.

In the embodiment of the disclosure, under the condition that the terminal equipment determines to report the resource, the measurement result can be reported to the network side equipment on the report resource, and the network side equipment receives the measurement result reported by the terminal equipment on the report resource.

In some embodiments, the receiving terminal device reports the measurement result reported by the resource, including at least one of the following:

receiving a measurement result periodically reported by terminal equipment on a Physical Uplink Control Channel (PUCCH) configured by Radio Resource Control (RRC) signaling;

receiving a measurement result semi-statically reported by terminal equipment on a PUCCH configured by RRC signaling;

receiving a measurement result reported by a terminal device in a semi-static state on a Physical Uplink Shared Channel (PUSCH) for activating semi-static Downlink Control Information (DCI) scheduling;

and receiving a measurement result which is reported aperiodically by the terminal equipment on the PUSCH used for triggering the DCI scheduling of the aperiodic report.

In the embodiment of the disclosure, the network side device receives the measurement result reported by the terminal device on the reported resource, and the network side device can receive the measurement result reported by the terminal device periodically on the physical uplink control channel PUCCH configured by the radio resource control RRC signaling.

In the embodiment of the disclosure, the network side device receives the measurement result reported by the terminal device on the reporting resource, and the network side device can receive the measurement result reported by the terminal device semi-statically on the PUCCH configured by the RRC signaling.

In the embodiment of the disclosure, the network side device receives the measurement result reported by the terminal device on the reported resource, and the network side device can receive the measurement result reported by the terminal device on the physical uplink shared channel PUSCH for activating the semi-static downlink control information DCI scheduling.

In the embodiment of the disclosure, the network side device receives the measurement result reported by the terminal device on the reporting resource, and the network side device can receive the measurement result reported by the terminal device on the PUSCH for triggering the DCI scheduling for aperiodic reporting.

In some embodiments, receiving the measurement result reported by the terminal device includes:

reporting value v reported by receiving terminal equipment by N bitsOr (b)

Reporting value v reported by receiving terminal equipment by M bits

In the embodiment of the disclosure, the network side device receives the measurement result reported by the terminal device, and may receive the report value v reported by the terminal device with N bitsWherein SCS is subcarrier spacing, B _c For the coherence bandwidth, N, M are positive integers.

In the embodiment of the disclosure, the network side device receives the measurement result reported by the terminal device, and may receive the report value v reported by the terminal device using M bitsWherein SCS is subcarrier spacing, B _c For the coherence bandwidth, N, M are positive integers.

In the embodiments provided in the present disclosure, the method provided in the embodiments of the present disclosure is described from the angles of the terminal device and the network side device, respectively. In order to implement the functions in the method provided by the embodiments of the present disclosure, the terminal device and the network side device may include a hardware structure, a software module, and implement the functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Some of the functions described above may be implemented in a hardware structure, a software module, or a combination of a hardware structure and a software module.

Referring to fig. 6, a schematic structural diagram of a communication device 10 according to an embodiment of the disclosure is provided. The communication device 10 shown in fig. 6 may include a transceiver module 101 and a processing module 102. The transceiver module 101 may include a transmitting module for implementing a transmitting function and/or a receiving module for implementing a receiving function, and the transceiver module 101 may implement the transmitting function and/or the receiving function.

The communication device 10 may be a terminal device, a device in a terminal device, or a device that can be used in cooperation with a terminal device.

The communication apparatus 10 is a terminal device:

the device comprises: the transceiver module 101 is configured to receive configuration information sent by the network side device, where the configuration information is used to indicate measurement coherence bandwidth.

The transceiver module 101 is further configured to receive a reference signal sent by the network side device.

A processing module 102 configured to estimate the downlink channel from the reference signal and measure the coherence bandwidth.

In some embodiments, the transceiver module 101 is further configured to report a measurement result to the network side device, where the measurement result includes the coherence bandwidth.

In some embodiments, the configuration information includes at least one of:

measuring resource configuration information;

and reporting the resource configuration information.

In some embodiments, the reported resource configuration information includes a second identifier, the second identifier being used to indicate a measurement coherence bandwidth; or (b)

The reporting resource configuration information includes reporting parameters, where the reporting parameters are used to indicate measurement coherence bandwidth.

In some embodiments, the processing module 102 is specifically configured to determine, with an autocorrelation function of 0.5,determining coherence bandwidth

In the case of an autocorrelation function of 0.9, the coherence bandwidth is determined

In some embodiments, the reporting resource configuration information includes a reporting resource, and the transceiver module 101 is further configured to report the measurement result to the network side device on the reporting resource.

In some embodiments, transceiver module 101 is further configured to perform at least one of:

In some embodiments, the transceiver module 101 is further configured to report to the network side device with N bitsReporting value v, reporting valueOr (b)

With continued reference to fig. 6, another exemplary communication device 10 according to an embodiment of the disclosure is shown. The communication device 10 shown in fig. 6 may include a transceiver module 101 and a processing module. The transceiver module 101 may include a transmitting module for implementing a transmitting function and/or a receiving module for implementing a receiving function, and the transceiver module 101 may implement the transmitting function and/or the receiving function.

The communication device 10 may be a network-side device, a device in a network-side device, or a device that can be used in cooperation with a network-side device.

The communication apparatus 10 is a network-side device:

the transceiver module 101 is configured to send configuration information to the terminal device, where the configuration information is used to indicate a measurement coherence bandwidth.

The transceiver module 101 is further configured to send a reference signal for estimating the downlink channel and measuring the coherence bandwidth to the terminal device.

In some embodiments, the transceiver module 101 is further configured to receive a measurement result reported by the terminal device, where the measurement result includes a coherence bandwidth.

In some embodiments, the configuration information includes at least one of:

measuring resource configuration information;

and reporting the resource configuration information.

In some embodiments, the reporting resource configuration information includes a reporting resource, where the transceiver module 101 is further configured to receive a measurement result reported by the terminal device on the reporting resource.

In some embodiments, the transceiver module 101 is further configured to receive a report value v reported by the terminal device with N bitsOr the report value v reported by the receiving terminal equipment by M bitsWherein SCS is subcarrier spacing, B _c For the coherenceBandwidth N, M is a positive integer.

With respect to the communication apparatus 10 in the above-described embodiment, the specific manner in which the respective modules perform the operations has been described in detail in the embodiment regarding the method, and will not be described in detail herein.

The communication device 10 provided in the foregoing embodiments of the present disclosure achieves the same or similar advantages as the method for measuring the coherence bandwidth in some of the foregoing embodiments, and will not be described herein.

Referring to fig. 7, fig. 7 is a schematic structural diagram of another communication device 1000 according to an embodiment of the disclosure. The communication apparatus 1000 may be a network-side device, a terminal device, a chip system, a processor, or the like that supports the network-side device to implement the above method, or a chip, a chip system, a processor, or the like that supports the terminal device to implement the above method. The communication device 1000 may be used to implement the method described in the above method embodiments, and reference may be made in particular to the description of the above method embodiments.

The communications device 1000 may include one or more processors 1001. The processor 1001 may be a general purpose processor or a special purpose processor, or the like. For example, a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processor may be used to control communication devices (e.g., base stations, baseband chips, terminal equipment chips, DUs or CUs, etc.), execute computer programs, and process data of the computer programs.

Optionally, the communication device 1000 may further include one or more memories 1002, on which a computer program 1004 may be stored, where the memory 1002 executes the computer program 1004, so that the communication device 1000 performs the method described in the above method embodiments. Optionally, the memory 1002 may also store data. The communication device 1000 and the memory 1002 may be provided separately or may be integrated.

Optionally, the communication device 1000 may further comprise a transceiver 1005, an antenna 1006. The transceiver 1005 may be referred to as a transceiver unit, a transceiver circuit, or the like, for implementing a transceiver function. The transceiver 1005 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function, and a transmitter; the transmitter may be referred to as a transmitter or a transmitting circuit, etc., for implementing a transmitting function.

Optionally, one or more interface circuits 1007 may also be included in the communications apparatus 1000. The interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001. The processor 1001 executes the code instructions to cause the communication device 1000 to perform the method described in the method embodiments described above.

The communication apparatus 1000 is a terminal device: the transceiver 1005 is configured to perform S21 in fig. 2; s31 and S33 in fig. 3; the processor 1001 is configured to execute S22 in fig. 2; s32 in fig. 3.

The communication apparatus 1000 is a network-side device: the transceiver 1005 is used to perform S41 and S42 in fig. 4; s51, S52, and S53 in fig. 5.

In one implementation, a transceiver for implementing the receive and transmit functions may be included in the processor 1001. For example, the transceiver may be a transceiver circuit, or an interface circuit. The transceiver circuitry, interface or interface circuitry for implementing the receive and transmit functions may be separate or may be integrated. The transceiver circuit, interface or interface circuit may be used for reading and writing codes/data, or the transceiver circuit, interface or interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 1001 may store a computer program 1003, where the computer program 1003 runs on the processor 1001, and may cause the communication device 1000 to execute the method described in the above method embodiment. The computer program 1003 may be solidified in the processor 1001, in which case the processor 1001 may be implemented by hardware.

In one implementation, the communications apparatus 1000 can include circuitry that can implement the functions of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this disclosure may be implemented on integrated circuits (integrated circuit, ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (application specific integrated circuit, ASIC), printed circuit boards (printed circuit board, PCB), electronic devices, and the like. The processor and transceiver may also be fabricated using a variety of IC process technologies such as complementary metal oxide semiconductor (complementary metal oxide semiconductor, CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication apparatus in the above embodiment description may be a terminal device, but the scope of the communication apparatus described in the present disclosure is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 7. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) A stand-alone integrated circuit IC, or chip, or a system-on-a-chip or subsystem;

(2) A set of one or more ICs, optionally including storage means for storing data, a computer program;

(3) An ASIC, such as a Modem (Modem);

(4) Modules that may be embedded within other devices;

(5) A receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handset, a mobile unit, a vehicle-mounted device, a network-side device, a cloud device, an artificial intelligent device, and the like;

(6) Others, and so on.

In the case where the communication device may be a chip or a chip system, please refer to fig. 8, which is a block diagram of a chip provided in an embodiment of the disclosure.

Chip 1100 includes processor 1101 and interface 1103. Wherein the number of processors 1101 may be one or more, and the number of interfaces 1103 may be a plurality.

For the case where the chip is used to implement the functions of the terminal device in the embodiments of the present disclosure:

an interface 1103 for receiving the code instruction and transmitting the code instruction to the processor.

A processor 1101 for executing code instructions to perform the method of measuring coherence bandwidth as described in some embodiments above.

For the case where the chip is used to implement the functions of the network side device in the embodiments of the present disclosure:

Optionally, the chip 1100 further comprises a memory 1102, the memory 1102 being used for storing the necessary computer programs and data.

Those of skill in the art will further appreciate that the various illustrative logical blocks (illustrative logical block) and steps (step) described in connection with the embodiments of the disclosure may be implemented by electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Those skilled in the art may implement the described functionality in varying ways for each particular application, but such implementation is not to be understood as beyond the scope of the embodiments of the present disclosure.

The embodiment of the present disclosure also provides a location information updating system, where the system includes the communication device as the terminal device and the communication device as the network side device in the embodiment of fig. 6, or the system includes the communication device as the terminal device and the communication device as the network side device in the embodiment of fig. 7.

The present disclosure also provides a readable storage medium having instructions stored thereon which, when executed by a computer, perform the functions of any of the method embodiments described above.

The present disclosure also provides a computer program product which, when executed by a computer, performs the functions of any of the method embodiments described above.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer programs. When the computer program is loaded and executed on a computer, the flow or functions described in accordance with the embodiments of the present disclosure are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer program may be stored in or transmitted from one computer readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means from one website, computer, server, or data center. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

Those of ordinary skill in the art will appreciate that: the various numbers of first, second, etc. referred to in this disclosure are merely for ease of description and are not intended to limit the scope of embodiments of this disclosure, nor to indicate sequencing.

At least one of the present disclosure may also be described as one or more, a plurality may be two, three, four or more, and the present disclosure is not limited. In the embodiment of the disclosure, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", and the technical features described by "first", "second", "third", "a", "B", "C", and "D" are not in sequence or in order of magnitude.

The correspondence relationships shown in the tables in the present disclosure may be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, and the present disclosure is not limited thereto. In the case of the correspondence between the configuration information and each parameter, it is not necessarily required to configure all the correspondence shown in each table. For example, in the table in the present disclosure, the correspondence shown by some rows may not be configured. For another example, appropriate morphing adjustments, e.g., splitting, merging, etc., may be made based on the tables described above. The names of the parameters indicated in the tables may be other names which are understood by the communication device, and the values or expressions of the parameters may be other values or expressions which are understood by the communication device. When the tables are implemented, other data structures may be used, for example, an array, a queue, a container, a stack, a linear table, a pointer, a linked list, a tree, a graph, a structure, a class, a heap, a hash table, or a hash table.

Predefined in this disclosure may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-sintering.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

A method for measuring coherence bandwidth, the method being performed by a terminal device and comprising:

receiving configuration information sent by network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth;

receiving a reference signal sent by the network side equipment;

and estimating a downlink channel according to the reference signal, and measuring the coherence bandwidth.
The method as recited in claim 1, further comprising:

and reporting a measurement result to the network side equipment, wherein the measurement result comprises the coherence bandwidth.
The method of claim 1 or 2, wherein the configuration information comprises at least one of:

measuring resource configuration information;

and reporting the resource configuration information.
The method of claim 3, wherein,

the measurement resource configuration information is measurement configuration information of a reference signal (CSI-RS) indicated by channel state information, and the measurement configuration information of the CSI-RS comprises a first identifier, wherein the first identifier is used for indicating measurement coherence bandwidth.
The method of claim 3, wherein,

the reported resource configuration information comprises a second identifier, wherein the second identifier is used for indicating measurement coherence bandwidth; or (b)

The reporting resource configuration information comprises reporting parameters, and the reporting parameters are used for indicating measurement coherence bandwidth.
The method of claim 3, wherein said estimating a downlink channel from said reference signal and measuring a coherence bandwidth comprises:

in case of an autocorrelation function of 0.5, determining the coherence bandwidth

In the case of an autocorrelation function of 0.9, determining the coherence bandwidth

Wherein,wherein,h _k BW is the bandwidth of the downlink channel, and k is a positive integer.
The method of any one of claims 3 to 6, wherein the reporting the resource configuration information includes reporting resources, and wherein the reporting the measurement result to the network side device includes:

and reporting the measurement result to the network side equipment on the reporting resource.
The method of claim 7, wherein reporting the measurement result to the network side device on the reporting resource comprises at least one of:

periodically reporting the measurement result to the network side equipment on a Physical Uplink Control Channel (PUCCH) configured by Radio Resource Control (RRC) signaling;

Semi-statically reporting the measurement result to the network side equipment on a PUCCH configured by RRC signaling;

semi-statically reporting the measurement result to the network side equipment on a Physical Uplink Shared Channel (PUSCH) for activating semi-static Downlink Control Information (DCI) scheduling;

and aperiodically reporting the measurement result to the network side equipment on the PUSCH used for triggering the DCI scheduling of aperiodic reporting.
The method according to any one of claims 6 to 8, wherein the reporting the measurement result to the network side device includes:

reporting a report value v to the network side equipment by using N bits, wherein the report value v is obtained by using the N bitsOr (b)

Reporting a report value v to the network side equipment by using M bits, wherein the report value v is obtained by using M bits

Wherein SCS is subcarrier spacing, B _c For the coherence bandwidth, N, M are positive integers.
A method for measuring coherence bandwidth, the method being performed by a network-side device and comprising:

transmitting configuration information to terminal equipment, wherein the configuration information is used for indicating measurement coherence bandwidth;

and transmitting a reference signal for estimating a downlink channel and measuring a coherence bandwidth to the terminal equipment.
The method as recited in claim 10, further comprising:

And receiving a measurement result reported by the terminal equipment, wherein the measurement result comprises the coherence bandwidth.
The method of claim 10 or 11, wherein the configuration information comprises at least one of:

measuring resource configuration information;

and reporting the resource configuration information.
The method of claim 12, wherein,

the measurement resource configuration information is measurement configuration information of a reference signal (CSI-RS) indicated by channel state information, and the measurement configuration information of the CSI-RS comprises a first identifier, wherein the first identifier is used for indicating measurement coherence bandwidth.
The method of claim 12, wherein,

the reported resource configuration information comprises a second identifier, wherein the second identifier is used for indicating measurement coherence bandwidth; or (b)

The reporting resource configuration information comprises reporting parameters, and the reporting parameters are used for indicating measurement coherence bandwidth.
The method of claim 12, wherein the reporting the resource configuration information includes reporting resources, and wherein the receiving the measurement result reported by the terminal device includes:

and receiving the measurement result reported by the terminal equipment on the reporting resource.
The method of claim 15, wherein the receiving the measurement result reported by the terminal device on the reporting resource comprises at least one of:

receiving the measurement result periodically reported by the terminal equipment on a Physical Uplink Control Channel (PUCCH) configured by Radio Resource Control (RRC) signaling;

receiving the measurement result semi-statically reported by the terminal equipment on a PUCCH configured by RRC signaling;

receiving the measurement result reported by the terminal equipment in a semi-static mode on a Physical Uplink Shared Channel (PUSCH) used for activating semi-static Downlink Control Information (DCI) scheduling;

and receiving the measurement result which is reported aperiodically by the terminal equipment on the PUSCH used for triggering the DCI scheduling of the aperiodic report.
The method of claim 15 or 16, wherein the receiving the measurement result reported by the terminal device includes:

receiving a report value v reported by the terminal equipment by N bits, wherein the report value v is a report value of N bitsOr (b)

Receiving a report value v reported by the terminal equipment by M bits, wherein the report value v is a report value of M bits

Wherein SCS is subcarrier spacing, B _c For the coherence bandwidth, N, M are positive integers.
A communication device, comprising:

the receiving and transmitting module is configured to receive configuration information sent by the network side equipment, wherein the configuration information is used for indicating measurement coherence bandwidth;

the transceiver module is further configured to receive a reference signal sent by the network side device;

and the processing module is configured to estimate a downlink channel according to the reference signal and measure the coherence bandwidth.
A communication device, comprising:

the receiving and transmitting module is configured to send configuration information to the terminal equipment, wherein the configuration information is used for indicating measurement coherence bandwidth;

the transceiver module is further configured to send a reference signal for estimating a downlink channel and measuring a coherence bandwidth to the terminal device.
A communication device, characterized in that the device comprises a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the device to perform the method according to any one of claims 1 to 9, or the processor executing the computer program stored in the memory to cause the device to perform the method according to any one of claims 10 to 17.
A communication device, comprising: a processor and interface circuit;

the interface circuit is configured to receive code instructions and transmit the code instructions to the processor;

the processor configured to execute the code instructions to perform the method of any one of claims 1 to 9 or to execute the code instructions to perform the method of any one of claims 10 to 17.
A computer readable storage medium storing instructions which, when executed, cause the method of any one of claims 1 to 9 to be implemented or which, when executed, cause the method of any one of claims 10 to 17 to be implemented.