WO2023216166A1

WO2023216166A1 - Method and apparatus for measuring coherent bandwidth

Info

Publication number: WO2023216166A1
Application number: PCT/CN2022/092320
Authority: WO
Inventors: 罗星熠
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2023-11-16
Also published as: CN117397340A

Abstract

Disclosed in the embodiments of the present disclosure are a method and apparatus for measuring a coherent bandwidth. The method comprises: a terminal device receiving configuration information, which is sent by a network-side device, wherein the configuration information is used for indicating measurement of a coherent bandwidth; receiving a reference signal, which is sent by the network-side device; and estimating a downlink channel according to the reference signal, and measuring the coherent bandwidth. Therefore, measurement of a coherent bandwidth under coherent joint transmission can be realized.

Description

Coherence bandwidth measurement methods and devices

Technical field

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

Background technique

In related technologies, the method used to measure coherence bandwidth is to perform channel measurement and acquisition through SRS (sounding reference signal) based on channel reciprocity. However, in the case of mTRP (transmission andreception point, transmission point) coherent joint transmission of FR2 (frequency range 2, frequency band range 2), since the downlink transmission sends data through two TRP directions, and the terminal device sends in a certain direction The uplink channel that the SRS passes through may be different from the downlink channel that the downlink transmission passes through, and at this stage, the terminal device does not support sending uplink data in two TRP directions at the same time.

Therefore, in the case of coherent joint transmission, how to measure the coherent bandwidth is an urgent problem that needs to be solved.

Contents of the invention

Embodiments of the present disclosure provide a coherence bandwidth measurement method and device, which can meet the measurement of coherence bandwidth in the case of coherent joint transmission.

In a first aspect, embodiments of the present disclosure provide a method for measuring coherence bandwidth, which method is executed by a terminal device. The method includes: receiving configuration information sent by a network side device, where the configuration information is used to indicate measuring the coherence bandwidth; Receive the reference signal sent by the network side device; estimate the downlink channel according to the reference signal, and measure the coherent bandwidth.

In this technical solution, the terminal device receives configuration information sent by the network side device, where the configuration information is used to indicate measuring the coherent bandwidth; receives a reference signal sent by the network side device; estimates the downlink channel based on the reference signal, and measures the coherent bandwidth. This can satisfy the measurement of coherent bandwidth in the case of coherent joint transmission.

In a second aspect, embodiments of the present disclosure provide another method for measuring coherence bandwidth, which method is performed by a network side device. The method includes: sending configuration information to a terminal device, where the configuration information is used to indicate the currently measured coherence bandwidth. ;Send a reference signal for estimating the downlink channel and measuring the coherence bandwidth to the terminal device.

In a third aspect, embodiments of the present disclosure provide a communication device that has some or all of the functions of the terminal device for implementing the method described in the first aspect. For example, the functions of the communication device may have some or all of the functions of the present disclosure. The functions in the embodiments may also be used to independently implement any of the embodiments of the present disclosure. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may further include a storage module coupled to the transceiver module and the processing module, which stores necessary computer programs and data for 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: a transceiver module configured to receive configuration information sent by a network side device, wherein the configuration information is used to indicate measuring the coherent bandwidth; the transceiver module is also configured to Receive the reference signal sent by the network side device; a processing module configured to estimate the downlink channel according to the reference signal and measure the coherent bandwidth.

In the fourth aspect, embodiments of the present disclosure provide another communication device, which has some or all functions of the network-side device for implementing the method example described in the second aspect. For example, the functions of the communication device may include the functions of the communication device in the present disclosure. The functions in some or all of the embodiments may also be used to independently implement any one of the embodiments of the present disclosure. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the communication device includes: a transceiver module configured to send configuration information to the terminal device, where the configuration information is used to indicate measuring the coherent bandwidth; the transceiver module is further configured to send the configuration information to the terminal device. The terminal equipment sends a reference signal used to estimate the downlink channel and measure the coherence bandwidth.

In a fifth aspect, an embodiment of the present disclosure provides a communication device. The communication device includes a processor. When the processor calls a computer program in a memory, it executes the method described in the first aspect.

In a sixth aspect, an embodiment of the present disclosure provides a communication device. The communication device includes a processor. When the processor calls a computer program in a memory, it executes the method described in the second aspect.

In a seventh aspect, an embodiment of the present disclosure provides a communication device. The communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the first aspect above.

In an eighth aspect, an embodiment of the present disclosure provides a communication device. The communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the second aspect above.

In a ninth aspect, an embodiment of the present disclosure provides a communication device. The device includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to cause the The device performs the method described in the first aspect.

In a tenth aspect, an embodiment of the present disclosure provides a communication device. The device includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to cause the The device performs the method described in the second aspect above.

In an eleventh aspect, an embodiment of the present disclosure provides a data transmission system, which includes the communication device described in the third aspect and the communication device described in the fourth aspect, or the system includes the communication device described in the fifth aspect. And the communication device described in the sixth aspect, or the system includes the communication device described in the seventh aspect and the communication device described in the eighth aspect, or the system includes the communication device described in the ninth aspect and the tenth aspect the communication device.

In a twelfth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions used by the above-mentioned terminal equipment. When the instructions are executed, the terminal equipment is caused to execute the above-mentioned first aspect. method.

In a thirteenth aspect, embodiments of the present invention provide a readable storage medium for storing instructions used by the above-mentioned network-side device. When the instructions are executed, the network-side device is caused to execute the above-mentioned second aspect. Methods.

In a fourteenth aspect, the present disclosure also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the first aspect.

In a fifteenth aspect, the present disclosure also provides a computer program product including a computer program, which, when run on a computer, causes the computer to execute the method described in the second aspect.

In a sixteenth aspect, the present disclosure provides a chip system, which includes at least one processor and an interface for supporting a terminal device to implement the functions involved in the first aspect, for example, determining or processing data involved in the above method. and information. In a possible design, the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the terminal device. The chip system may be composed of chips, or may include chips and other discrete devices.

In a seventeenth aspect, the present disclosure provides a chip system. The chip system includes at least one processor and an interface for supporting the network side device to implement the functions involved in the second aspect, for example, determining or processing the functions involved in the above method. At least one of data and information. In a possible design, the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the network side device. The chip system may be composed of chips, or may include chips and other discrete devices.

In an eighteenth aspect, the present disclosure provides a computer program that, when run on a computer, causes the computer to execute the method described in the first aspect.

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

Description of the drawings

In order to more clearly illustrate the technical solutions in the embodiments of the disclosure or the background technology, the drawings required to be used in the embodiments or the background technology of the disclosure will be described below.

Figure 1 is an architectural diagram of a communication system provided by an embodiment of the present disclosure;

Figure 2 is a flow chart of a coherence bandwidth measurement method provided by an embodiment of the present disclosure;

Figure 3 is a flow chart of another coherence bandwidth measurement method provided by an embodiment of the present disclosure;

Figure 4 is a flow chart of yet another coherence bandwidth measurement method provided by an embodiment of the present disclosure;

Figure 5 is a flow chart of yet another coherence bandwidth measurement method provided by an embodiment of the present disclosure;

Figure 6 is a structural diagram of a communication device provided by an embodiment of the present disclosure;

Figure 7 is a structural diagram of another communication device provided by an embodiment of the present disclosure;

Figure 8 is a structural diagram of a chip provided by an embodiment of the present disclosure.

Detailed ways

In order to facilitate understanding of the embodiments of the present disclosure, several terms involved in the present disclosure are briefly explained first.

1. Channel reciprocity: In time division duplexing (TDD) mode, uplink and downlink channels transmit signals on the same frequency domain resources and different time domain resources. Within a relatively short time (such as the coherence time of channel propagation), it can be considered that the channel fading experienced by signals on the uplink and downlink channels is the same. This is the reciprocity of the uplink and downlink channels. Based on the reciprocity of uplink and downlink channels, network-side equipment can measure the uplink channel based on uplink reference signals, such as sounding reference signals (SRS). And the downlink channel can be estimated based on the uplink channel, so that the precoding matrix for downlink transmission can be determined.

However, in frequency division duplexing (FDD) mode, since the frequency band spacing of the uplink and downlink channels is much larger than the coherence bandwidth, the uplink and downlink channels do not have complete reciprocity. The uplink channel is used to determine the frequency for downlink transmission. The precoding matrix may not be adapted to the downlink channel. However, the uplink and downlink channels in FDD mode still have partial reciprocity, such as angle reciprocity and delay reciprocity. Therefore, angle and time delay can also be called reciprocity parameters.

2. Reference signal (RS): The reference signal can also be called pilot, reference sequence, etc. In embodiments of the present disclosure, the reference signal may be a reference signal used 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), etc. It should be understood that the reference signals listed above are only examples and should not constitute any limitation on the present disclosure. This disclosure does not exclude the possibility of defining other reference signals in future protocols to achieve the same or similar functions.

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

3. Subcarrier: used to carry signals, occupying a bandwidth in the frequency domain, and can be embodied as a resource element (RE).

4. PRB bundling size is used to indicate binding a certain number of physical resource blocks (PRB). A physical resource block group (PRG) refers to a combination of multiple physical resource blocks (PRB). A PRG can correspond to a PRB bundling size. Usually in the same PRG, the network side equipment uses the same precoding, and the terminal side performs joint channel estimation in units of PRG. In the embodiment of the present disclosure, multiple PRBs in the PRG use the same precoding, and the terminal side still performs channel estimation in units of PRG. It should be noted that in the embodiment of the present disclosure, PRG and PRB bundling size are interchangeable, that is, the solution applicable to PRG is also applicable to PRB bundling size.

It should be noted that due to movement, the terminal equipment will move from the center of the coverage area of a network side equipment (base station) to the edge area of the network side equipment. The edge area is located within the coverage area of multiple network-side devices. Therefore, other signal transmission will cause strong interference to the terminal device, making the data transmission performance of the terminal device very poor. In order to improve the data transmission performance of edge terminal devices, long term evolution (LTE) and new radio (NR) have introduced a multi-station coordinated transmission (multi-TRP) mechanism. Under this mechanism, multiple network-side devices can provide services to the above-mentioned terminal devices at the same time, and the interference originally caused by other network-side devices can be turned into useful signals, thus improving the performance of edge terminal devices.

In the current multi-TRP transmission mechanism, according to the channel state information (CSI) from each network side device to the terminal device, one of the base stations among the multiple network side devices can be dynamically selected as the terminal device. To transmit data, the multiple network side devices simultaneously transmit data to the terminal device. Among them, the former is called single-station transmission or dynamic transmission point selection (DPS), and the latter is called multi-station joint transmission (JT). Specifically, multi-station joint transmission also includes coherent joint transmission (coherent joint transmission, CJT) or non-coherent joint transmission (NCJT). In a network, whether to use CJT or NCJT depends on the information exchange delay between various network-side devices. Among them, CJT requires dynamic information interaction between multiple network-side devices, and can dynamically make data scheduling decisions based on the information of each network-side device (such as CSI). It requires relatively high interaction delay between each network-side device. High; NCJT does not require dynamic exchange of information between various network-side devices, has lower requirements for interaction delay, and is more suitable for network deployment. In order to decide which mechanism to use, DPS or JT, the terminal device can measure and report the channel state information reference signal (CSI reference signal, CSI-RS) sent by each of the above multiple network side devices according to each mechanism. CSI, and then the network side device makes data scheduling decisions; alternatively, the terminal device can measure the CSI under multiple transmission mechanisms based on the CSI-RS sent by the network side device, and recommend a transmission mechanism to the network side device as subsequent data Reference information for scheduling decisions.

In order to better understand the coherence bandwidth measurement method and device disclosed in the embodiments of the present disclosure, the following first describes the communication system to which the embodiments of the present disclosure are applicable.

Please refer to Figure 1, which is a schematic architectural diagram of a communication system 1 provided by an embodiment of the present disclosure. The communication system may include but is not limited to one network side device and one terminal device. The number and form of devices shown in Figure 1 are only for examples and do not constitute a limitation on the embodiments of the present disclosure. In actual applications, two or more devices may be included. The above network side equipment, two or more terminal devices. The communication system 1 shown in Figure 1 includes a network side device 11 and a terminal device 12 as an example.

It should be noted that the technical solutions of the embodiments of the present disclosure can be applied to various communication systems. For example: long term evolution (LTE) system, fifth generation (5th generation, 5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems.

The network side device 11 in the embodiment of the present disclosure is an entity on the network side that is used to transmit or receive signals. For example, the network side device 101 can be an evolved base station (evolved NodeB, eNB), a transmission point (transmission reception point, TRP), a next generation base station (next generation NodeB, gNB) in an NR system, or other future mobile communication systems. Base stations or access nodes in wireless fidelity (WiFi) systems, etc. The embodiments of the present disclosure do not limit the specific technology and specific equipment form used by the network side equipment. The network-side device provided by the embodiment of the present disclosure may be composed of a centralized unit (central unit, CU) and a distributed unit (DU), where the CU may also be called a control unit (control unit), using CU- The structure of DU can separate the protocol layers of network-side equipment, such as base stations, with some protocol layer functions placed under centralized control by the CU, while the remaining part or all protocol layer functions are distributed in the DU, and the CU centrally controls the DU.

The terminal device 12 in the embodiment of the present disclosure is an entity on the user side for receiving or transmitting signals, such as a mobile phone. Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT), etc. The terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality ( augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical surgery, smart grid ( Wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, etc. The embodiments of the present disclosure do not limit the specific technology and specific equipment form used by the terminal equipment.

It can be understood that the communication system described in the embodiments of the present disclosure is to more clearly illustrate the technical solutions of the embodiments of the present disclosure, and does not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure. As those of ordinary skill in the art will know, With the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present disclosure are also applicable to similar technical problems.

In version 16/17 (Rel-16/17), there was a lot of discussion on mTRP, but the discussions were limited to non-correlated joint transmission (NC-JT), and there was no discussion on joint transmission (C-JT). . In actual networks, many existing networks can implement related joint transmission, such as centralized radio access network (Centralized radio access network, C-RAN) architecture and intra-site collaboration.

In mTRP, coherent joint transmission (also known as correlated joint transmission) can be jointly scheduled with more users (terminal devices), supporting MU-MIMO (multi-user multiple-input multiple-output) of more users (terminal devices) , uplink multi-user multiple input multiple output). Compared with non-coherent joint transmission, it has greater system gain, especially for cell edge users, which can achieve better performance. However, in the existing protocol, MU-MIMO can only support up to 12 orthogonal DMRS (demodulation reference signal) ports. Because MU-MIMO can support more terminal devices to obtain greater system gain when it comes to coherent joint transmission to be supported in Release 18 (Rel-18), more orthogonal DMRS need to be supported in Rel-18 port.

In order to increase the number of supported DMRS ports, consider reducing the number of REs (resource elements) for each DMRS port. However, using this method will reduce the performance of channel estimation. Moreover, for coherent joint transmission of mTRP, because the signal will be transmitted from two TRPs, there will be more delay paths, making the frequency selectivity problem of the channel more serious, which makes the performance of channel estimation of low-density DMRS mapping scheme possible. It will be very bad.

For this problem, the PRB (physical resource block, physical resource block) binding size can be configured to a larger value. Joint channel estimation through more PRBs can increase the performance of channel estimation. However, the size of the PRB bundling cannot be arbitrarily set to the required value. Many factors need to be considered. One of them is the coherence bandwidth. The size of the PRB cannot exceed the coherence bandwidth. Another way is to determine whether to use this mapping method based on the coherence bandwidth of the channel. If the coherence bandwidth is too small, users will not be allowed to configure the newly introduced low-density DMRS mapping method to avoid the problem of poor channel estimation performance. To do this, a method of obtaining coherence bandwidth is needed.

Based on this, embodiments of the present disclosure provide a coherence bandwidth measurement method to meet the requirement of measuring coherence bandwidth in the case of coherent joint transmission.

In the embodiment of the present disclosure, "for indicating" may include for direct indicating and for indirect indicating. When describing a certain configuration information to indicate A, it may include that the configuration information directly indicates A or indirectly indicates A, but it does not mean that the configuration information must contain A.

The information indicated by the configuration information is called information to be configured. During the specific implementation process, there are many ways to indicate the information to be configured. For example, but not limited to, the information to be configured can be directly indicated, such as the information to be configured itself or the information to be configured. Index of configuration information, etc. The information to be configured may also be indirectly indicated by indicating other information, where there is an association relationship between the other information and the information to be configured. 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 specific information can also be achieved by means of a pre-agreed (for example, protocol stipulated) arrangement order of each piece of information, thereby reducing the indication overhead to a certain extent.

The information to be configured can be sent together as a whole, or can be divided into multiple sub-information and sent separately, and the sending period and/or sending timing of these sub-information can be the same or different. This disclosure does not limit the specific sending method. The sending period and/or sending timing of these sub-information may be predefined, for example, according to a protocol, or may be configured by the transmitting device by sending configuration information to the receiving 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, media access control (media access control, MAC) layer signaling and physical layer signaling. Among them, the radio resource control signaling includes, for example, radio resource control (RRC) signaling; the MAC layer signaling, for example, includes the MAC control element (control element, CE); and the physical layer signaling, for example, includes downlink control information (downlink control information). , DCI).

A coherence bandwidth measurement method and device provided by the present disclosure will be introduced in detail below with reference to the accompanying drawings.

Please refer to FIG. 2 , which is a flow chart of a coherence bandwidth measurement method provided by an embodiment of the present disclosure.

As shown in Figure 2, the method is executed by the terminal device. The method may include but is not limited to the following steps:

S21: Receive the configuration information sent by the network side device, where the configuration information is used to indicate measuring the coherent bandwidth; receive the reference signal sent by the network side device.

It can be understood that in the embodiment of the present disclosure, the network side device sends configuration information to the terminal device, and the configuration information is used to instruct the measurement of the coherent bandwidth to instruct the terminal device to measure the coherent bandwidth.

The network side device sends configuration information to the terminal device to indicate the measurement of the coherent bandwidth, and then sends a reference signal to the terminal device.

The reference signal may be a channel state information reference signal (CSI-RS).

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

Measure resource configuration information;

Report resource configuration information.

In the embodiment of the present 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 can be understood that the measurement resource configuration information can be used to determine the resource configuration used for measurement, and the reporting resource configuration information can be used to determine the resource configuration used when reporting measurement results.

In some embodiments, the measurement resource configuration information is channel state information indicating measurement configuration information of the reference signal CSI-RS, and the measurement configuration information of the CSI-RS includes a first identifier, where the first identifier is used to indicate the measurement coherence bandwidth. .

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

In some embodiments, the reported resource configuration information includes a second identifier, and the second identifier is used to indicate measuring the coherence bandwidth; or the reported resource configuration information includes reporting parameters, and the reporting parameters are used to indicate measuring the coherence bandwidth.

In this embodiment of the present disclosure, the reported resource configuration information includes a second identifier, where the second identifier is used to indicate measuring the coherent bandwidth. The terminal device receives the reported resource configuration information sent by the network side device, and determines the measurement coherent bandwidth according to the second identifier in the reported resource configuration information.

In this embodiment of the present disclosure, the reported resource configuration information includes reported parameters, where the reported parameters are used to indicate measuring the coherent bandwidth. The terminal device receives the reported resource configuration information sent by the network side device, and determines the measurement coherent bandwidth based on the reported parameters in the reported resource configuration information.

For example, the reporting parameter may be report quantity information (for example, "reportQuantity" of RRC IE), and reportQuantity is configured as the coherence bandwidth coherenceBandwidth to indicate the measured coherence bandwidth.

S22: Estimate the downlink channel based on the reference signal and measure the coherence bandwidth.

In the embodiment of the present disclosure, the terminal device receives the configuration information sent by the network side device, determines and measures the coherent bandwidth, receives the reference signal sent by the network side device, estimates the downlink channel based on the reference signal, and measures the coherent bandwidth.

Among them, there are two ways to define the coherence bandwidth. Note that the downlink channel is H(f), and its autocorrelation function is R _H (Δf) = E{H(f)H ^* (f+Δf)}. Among them, the first In this way, Δf when the autocorrelation function takes a value of 0.9 is defined as the coherence bandwidth. The second way is to define Δf when the autocorrelation function takes a value of 0.5 as the coherence bandwidth. When the signal bandwidth is smaller than the coherence bandwidth, the signal passes through the flat fading channel; when the signal is smaller than the coherence bandwidth, the signal passes through the frequency domain selective channel. That is, the frequency domain selectivity of the channel is characterized by the coherence bandwidth.

In some embodiments, if the first definition method is adopted

Determine the coherence bandwidth

If the second definition method is adopted: when the autocorrelation function is 0.9, determine the coherence bandwidth

in,

h _k is the time domain sampling value of the downlink channel, BW is the bandwidth of the downlink channel, and k is a positive integer.

In the embodiment of the present disclosure, when the autocorrelation function is 0.5, the coherence bandwidth satisfies the relationship:

When the autocorrelation function is 0.9, the coherence bandwidth satisfies the relationship;

in,

In the embodiment of the present disclosure, h _k is the time domain sampling value of the downlink channel, and the value range of k is the number of subcarriers included in the bandwidth of the downlink channel.

In the embodiment of the present disclosure, the coherent bandwidth in the case of coherent joint transmission can be measured to determine whether to configure the newly introduced low-density DMRS mapping method for the terminal device based on the coherent bandwidth. The newly introduced low-density DMRS mapping method is compared with the related technology, the number of REs per DMRS port is smaller. When the coherent bandwidth is too small, the newly introduced low-density DMRS mapping method is not allowed to be configured for terminal equipment to avoid poor channel estimation performance.

In addition, in the embodiment of the present disclosure, the coherence bandwidth can also be used to determine the appropriate PRB bundling size, and joint channel estimation is performed through an appropriate number of PRBs to increase the performance of channel estimation.

By implementing the embodiments of the present disclosure, the terminal device receives the configuration information sent by the network side device, where the configuration information is used to indicate measuring the coherent bandwidth; receives the reference signal sent by the network side device; estimates the downlink channel based on the reference signal, and measures the coherent bandwidth. This can satisfy the measurement of coherent bandwidth in the case of coherent joint transmission.

Please refer to FIG. 3 , which is a flow chart of another coherence bandwidth measurement method provided by an embodiment of the present disclosure.

As shown in Figure 3, the method is executed by the terminal device. The method may include but is not limited to the following steps:

S31: Receive the configuration information sent by the network side device, where the configuration information is used to indicate measuring the coherent bandwidth; receive the reference signal sent by the network side device.

S32: Estimate the downlink channel based on the reference signal and measure the coherence bandwidth.

For the relevant descriptions of S31 and S32, please refer to the relevant descriptions in the above embodiments and will not be described again here.

S33: Report the measurement results to the network side device, where the measurement results include the coherent bandwidth.

In the embodiment of the present disclosure, the terminal device receives the configuration information and reference signal sent by the network side device, estimates the downlink channel according to the reference signal, and measures the coherent bandwidth. After that, the terminal device can report the measurement reception to the network side device, where the measurement result includes the coherent bandwidth.

In some embodiments, reporting resource configuration information includes reporting resources, wherein reporting measurement results to the network side device includes: reporting measurement results to the network side device on the reporting resources.

It can be understood that the network side device sends configuration information to the terminal device, and the configuration information includes reported resource configuration information. When the reported resource configuration information includes reported resources, the terminal device receives the configuration information sent by the network side device and can determine the report. Resources, where the reporting resources may be resources used by the network side device to instruct the terminal device to report measurement results.

In the embodiment of the present disclosure, when the terminal device determines to report resources, it can report the measurement results to the network side device on the reporting resources.

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

On the physical uplink control channel PUCCH configured by radio resource control RRC signaling, periodically report the measurement results to the network side device;

On the PUCCH configured by RRC signaling, the measurement results are semi-statically reported to the network side device;

On the physical uplink shared channel PUSCH used to activate semi-static downlink control information DCI scheduling, semi-statically report measurement results to the network side device;

On the PUSCH used to trigger DCI scheduling for aperiodic reporting, the measurement results are reported to the network side device aperiodically.

In this disclosed embodiment, the terminal device reports the measurement results to the network side device on the reporting resource, which can be periodically configured on the PUCCH (physical uplink control channel) configured by RRC (radioresource control, radio resource control) signaling. Report the measurement results to the network side device.

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

In this disclosed embodiment, the terminal device reports the measurement results to the network side device on the reporting resource, which can be used to activate the semi-static DCI (downlink control information, downlink control information) scheduling PUSCH (physical uplink shared channel, physical uplink shared channel) On the network side, the measurement results are semi-statically reported to the network side device.

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

It should be noted that the above-mentioned embodiments are only for illustration and are not intended to specifically limit the scope of protection of the embodiments of the present disclosure. The above-mentioned embodiments are not exhaustive and are only illustrative of some embodiments, and the above-mentioned embodiments can be implemented individually, or Can be implemented in multiple combinations.

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

Use N bits to report the reported value v to the network side device. The reported value

or

Use M bits to report the reported value v to the network side device. The reported value

Among them, SCS is the subcarrier spacing, B _c is the coherent bandwidth, and N and M are both positive integers.

In this embodiment of the present disclosure, the terminal device reports the measurement result to the network side device, and can use N bits to report the reporting value v to the network side device. The reporting value

In this embodiment of the present disclosure, the terminal device reports the measurement result to the network side device. M bits can be used to report the reporting value v to the network side device. The reporting value

In this embodiment of the present disclosure, the accuracy of the report is within one RB (resource block). After measuring the coherent bandwidth B _c , the reported value is determined according to the configuration of the subcarrier spacing SCS.

Use N bits to report the reported value v to the network side device. Currently, it is also possible to use one RE as the precision and use M bits to report the reported value v to the network side device. The reported value

It should be noted that in the embodiment of the present disclosure, the reported value v with other possible precisions can also be reported, which is not limited to one RB or one RE as the precision, but can also be with other precisions, and the embodiment of the present disclosure does not place a specific limit on this.

Please refer to FIG. 4 , which is a flow chart of yet another coherence bandwidth measurement method provided by an embodiment of the present disclosure.

As shown in Figure 4, the method is executed by the network side device. The method may include but is not limited to the following steps:

S41: Send configuration information to the terminal device, where the configuration information is used to indicate measuring the coherent bandwidth.

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

Measure resource configuration information;

Report resource configuration information.

By implementing the embodiments of the present disclosure, the network side device sends configuration information to the terminal device, where the configuration information is used to instruct the measurement of the coherent bandwidth; and sends a reference signal to the terminal device, and the reference signal is used to instruct the terminal device to estimate the downlink channel according to the reference signal and measure Coherence bandwidth. This can satisfy the measurement of coherent bandwidth in the case of coherent joint transmission.

Please refer to FIG. 5 , which is a flow chart of yet another coherence bandwidth measurement method provided by an embodiment of the present disclosure.

As shown in Figure 5, the method is executed by the network side device. The method may include but is not limited to the following steps:

S51: Send configuration information to the terminal device, where the configuration information is used to indicate measuring the coherent bandwidth.

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

S53: Receive the measurement results reported by the terminal device, where the measurement results include the coherent bandwidth.

In some embodiments, reporting resource configuration information includes reporting resources, wherein receiving measurement results reported by terminal devices includes: receiving measurement results reported by terminal devices on reporting resources.

In the embodiment of the present disclosure, when the terminal device determines the reporting resource, it can report the measurement result to the network side device on the reporting resource, and the network side device receives the measurement result reported by the terminal device on the reporting resource.

In some embodiments, receiving measurement results reported by the terminal device on the reporting resource includes at least one of the following:

Receive measurement results periodically reported by the terminal equipment on the physical uplink control channel PUCCH configured in the radio resource control RRC signaling;

Receive the measurement results reported semi-statically by the terminal equipment on the PUCCH configured by RRC signaling;

Receive measurement results semi-statically reported by the terminal equipment on the physical uplink shared channel PUSCH used to activate semi-static downlink control information DCI scheduling;

Receive the measurement results reported aperiodically by the terminal equipment on the PUSCH used to trigger the DCI schedule for aperiodic reporting.

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

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

In the embodiment of the present disclosure, the network side device receives the measurement results reported by the terminal device on the reporting resource, and the network side device can receive the semi-static measurement result of the terminal device on the physical uplink shared channel PUSCH used to activate semi-static downlink control information DCI scheduling. Measurement results reported above.

In the embodiment of the present disclosure, the network side device receives the measurement results reported by the terminal device on the reporting resource, and the network side device can receive the measurement results reported aperiodically by the terminal device on the PUSCH of DCI scheduling that is used to trigger aperiodic reporting. .

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

Receive the reported value v reported by the terminal device using N bits, the reported value

or

Receive the reported value v reported by the terminal device using M bits, the reported value

In this embodiment of the present disclosure, the network side device receives the measurement results reported by the terminal device, and can receive the reported value v reported by the terminal device using N bits. The reported value

In this embodiment of the present disclosure, the network side device receives the measurement result reported by the terminal device, and can receive the reported value v reported by the terminal device using M bits. The reported value

In the above embodiments provided by the present disclosure, the methods provided by the embodiments of the present disclosure are introduced from the perspectives of terminal equipment and network side equipment respectively. In order to implement each function in the method provided by the above embodiments of the present disclosure, the terminal device and the network side device may include a hardware structure and a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. A certain function among the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.

Please refer to FIG. 6 , which is a schematic structural diagram of a communication device 10 provided by an embodiment of the present disclosure. 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 sending module and/or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiving module 101 may implement the sending function and/or the receiving function.

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

The communication device 10 is a terminal device:

The device includes: a transceiver module 101, configured to receive configuration information sent by a network side device, where the configuration information is used to indicate measuring the coherent bandwidth.

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

The processing module 102 is configured to estimate the downlink channel according to the reference signal and measure the coherence bandwidth.

In some embodiments, the transceiver module 101 is also configured to report measurement results to the network side device, where the measurement results include the coherent bandwidth.

Measure resource configuration information;

Report resource configuration information.

In some embodiments, the reported resource configuration information includes a second identifier, and the second identifier is used to indicate measuring the coherent bandwidth; or

The reported resource configuration information includes reporting parameters, and the reporting parameters are used to indicate the measured coherence bandwidth.

In some embodiments, the processing module 102 is specifically configured to determine the coherence bandwidth when the autocorrelation function is 0.5.

Determine the coherence bandwidth when the autocorrelation function is 0.9

in,

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

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

In some embodiments, the transceiver module 101 is also configured to use N bits to report the reported value v to the network side device. The reported value

or

Please continue to refer to FIG. 6 , which is a schematic structural diagram of another communication device 10 provided by an embodiment of the present disclosure. The communication device 10 shown in Figure 6 may include a transceiver module 101 and a processing module. The transceiver module 101 may include a sending module and/or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiving module 101 may implement the sending 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 conjunction with the network-side device.

The communication device 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 measuring the coherent bandwidth.

The transceiver module 101 is also 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 also configured to receive measurement results reported by the terminal device, where the measurement results include coherence bandwidth.

Measure resource configuration information;

Report resource configuration information.

In some embodiments, the reporting resource configuration information includes reporting resources, wherein the transceiving module 101 is also configured to receive measurement results reported by the terminal device on the reporting resources.

In some embodiments, the transceiver module 101 is also configured to receive the reported value v reported by the terminal device using N bits, the reported value

Or receive the reported value v reported by the terminal device using M bits, the reported value

Regarding the communication device 10 in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

The communication device 10 provided in the above embodiments of the present disclosure achieves the same or similar beneficial effects as the coherence bandwidth measurement methods in some of the above embodiments, and will not be described again here.

Please refer to FIG. 7 , which is a schematic structural diagram of another communication device 1000 provided by an embodiment of the present disclosure. The communication device 1000 may be a network-side device, a terminal device, a chip, a chip system, a processor, etc. that supports a network-side device to implement the above method, or a chip or a chip system that supports a terminal device to implement the above method. , or processor, etc. The communication device 1000 can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.

Communication 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, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.

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

Optionally, the communication device 1000 may also include a transceiver 1005 and an antenna 1006. The transceiver 1005 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions. The transceiver 1005 may include a receiver and a transmitter. The receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function; the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.

Optionally, the communication device 1000 may also include one or more interface circuits 1007. 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 above method embodiment.

The communication device 1000 is a terminal device: the transceiver 1005 is used to execute S21 in FIG. 2; S31 and S33 in FIG. 3; the processor 1001 is used to execute S22 in FIG. 2; and S32 in FIG. 3.

The communication device 1000 is a network-side device: the transceiver 1005 is used to perform S41 and S42 in Figure 4; S51, S52 and S53 in Figure 5.

In one implementation, the processor 1001 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.

In one implementation, the processor 1001 may store a computer program 1003, and the computer program 1003 runs on the processor 1001, causing the communication device 1000 to perform 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 communication device 1000 may include a circuit, and the circuit may implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processors and transceivers described in this disclosure may be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as 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 (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

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

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) A collection of one or more ICs. Optionally, the IC collection may also include storage components for storing data and computer programs;

(3)ASIC, such as modem;

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network-side equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others, etc.

For the case where the communication device may be a chip or a chip system, please refer to FIG. 8 , which is a structural diagram of a chip provided in an embodiment of the present disclosure.

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

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

Interface 1103, used to receive code instructions and transmit them to the processor.

The processor 1101 is configured to run code instructions to perform the measurement method of coherence bandwidth as described in some of the above embodiments.

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

The processor 1101 is configured to run code instructions to perform the coherence bandwidth measurement method as described in some of the above embodiments.

Optionally, the chip 1100 also includes a memory 1102, which is used to store necessary computer programs and data.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of the present disclosure can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the scope of protection of the embodiments of the present disclosure.

Embodiments of the present disclosure also provide a location information update system. The system includes a communication device as a terminal device in the aforementioned embodiment of FIG. 6 and a communication device as a network side device. Alternatively, the system includes a communication device as a terminal device in the aforementioned embodiment of FIG. 7 The communication device of the device and the communication device as the network side device.

The present disclosure also provides a readable storage medium on which instructions are stored, and when the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.

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

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the processes or functions described in accordance with the embodiments of the present disclosure are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. 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 one or more available media integrated. The usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.

Those of ordinary skill in the art can understand that the first, second, and other numerical numbers involved in this disclosure are only for convenience of description and are not used to limit the scope of the embodiments of the disclosure, nor to indicate the order.

At least one in the present disclosure can also be described as one or more, and the plurality can be two, three, four or more, and the present disclosure is not limited. In the embodiment of the present disclosure, for a technical feature, the technical feature is distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D” etc. The technical features described in "first", "second", "third", "A", "B", "C" and "D" are in no particular order or order.

The corresponding relationships shown in each table in this disclosure can be configured or predefined. The values of the information in each table are only examples and can be configured as other values, which is not limited by this disclosure. When configuring the correspondence between information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, in the table in this disclosure, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.

Predefinition in this disclosure may be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered to be beyond the scope of this disclosure.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure. should be covered by the protection scope of this disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

A method for measuring coherence bandwidth, characterized in that the method is executed by a terminal device and includes:

Receive configuration information sent by the network side device, where the configuration information is used to indicate measuring the coherent bandwidth;

Receive the reference signal sent by the network side device;

The downlink channel is estimated based on the reference signal, and the coherence bandwidth is measured.
The method of claim 1, further comprising:

Report a measurement result to the network side device, where the measurement result includes the coherence bandwidth.
The method according to claim 1 or 2, characterized in that the configuration information includes at least one of the following:

Measure resource configuration information;

Report resource configuration information.
The method of claim 3, characterized in that:

The measurement resource configuration information is the measurement configuration information of the channel state information indication reference signal CSI-RS, and the measurement configuration information of the CSI-RS includes a first identifier, where the first identifier is used to indicate the measurement coherence bandwidth. .
The method of claim 3, characterized in that:

The reported resource configuration information includes a second identifier, the second identifier is used to indicate measuring the coherence bandwidth; or

The reported resource configuration information includes reporting parameters, and the reporting parameters are used to indicate measuring the coherence bandwidth.
The method of claim 3, wherein estimating the downlink channel according to the reference signal and measuring the coherence bandwidth includes:

With an autocorrelation function of 0.5, determine the coherence bandwidth

With an autocorrelation function of 0.9, determine the coherence bandwidth

in,
in,
h k is the time domain sampling value of the downlink channel, BW is the bandwidth of the downlink channel, and k is a positive integer.
The method according to any one of claims 3 to 6, wherein reporting resource configuration information includes reporting resources, wherein reporting measurement results to the network side device includes:

Report the measurement result to the network side device on the reporting resource.
The method of claim 7, wherein reporting the measurement results to the network side device on the reporting resource includes at least one of the following:

Periodically report the measurement results to the network side device on the physical uplink control channel PUCCH configured by radio resource control RRC signaling;

On the PUCCH configured by RRC signaling, semi-statically report the measurement results to the network side device;

Semi-statically report the measurement results to the network side device on the physical uplink shared channel PUSCH used to activate semi-static downlink control information DCI scheduling;

On the PUSCH used to trigger DCI scheduling for aperiodic reporting, the measurement results are reported to the network side device aperiodically.
The method according to any one of claims 6 to 8, reporting measurement results to the network side device includes:

N bits are used to report the reported value v to the network side device. The reported value
or

M bits are used to report the reported value v to the network side device. The reported value

Among them, SCS is the subcarrier spacing, B c is the coherent bandwidth, and N and M are both positive integers.
A method for measuring coherence bandwidth, characterized in that the method is executed by a network side device, including:

Send configuration information to the terminal device, where the configuration information is used to indicate measuring the coherent bandwidth;

A reference signal used to estimate the downlink channel and measure the coherence bandwidth is sent to the terminal device.
The method of claim 10, further comprising:

Receive measurement results reported by the terminal device, where the measurement results include the coherence bandwidth.
The method according to claim 10 or 11, characterized in that the configuration information includes at least one of the following:

Measure resource configuration information;

Report resource configuration information.
The method of claim 12, characterized in that:

The measurement resource configuration information is the measurement configuration information of the channel state information indication reference signal CSI-RS, and the measurement configuration information of the CSI-RS includes a first identifier, where the first identifier is used to indicate the measurement coherence bandwidth. .
The method of claim 12, characterized in that:

The reported resource configuration information includes a second identifier, the second identifier is used to indicate measuring the coherence bandwidth; or

The reported resource configuration information includes reporting parameters, and the reporting parameters are used to indicate measuring the coherence bandwidth.
The method of claim 12, wherein reporting resource configuration information includes reporting resources, wherein receiving measurement results reported by the terminal device includes:

Receive the measurement result reported by the terminal device on the reporting resource.
The method of claim 15, wherein receiving the measurement results reported by the terminal device on the reporting resource includes at least one of the following:

Receive the measurement results periodically reported by the terminal equipment on the physical uplink control channel PUCCH configured by the radio resource control RRC signaling;

Receive the measurement results semi-statically reported by the terminal equipment on the PUCCH configured in RRC signaling;

Receive the measurement results semi-statically reported by the terminal equipment on the physical uplink shared channel PUSCH used to activate semi-static downlink control information DCI scheduling;

Receive the measurement results reported aperiodically by the terminal device on the PUSCH used to trigger DCI scheduling for aperiodic reporting.
The method according to claim 15 or 16, wherein receiving the measurement results reported by the terminal device includes:

Receive the reported value v reported by the terminal device using N bits, and the reported value
or

Receive the reported value v reported by the terminal device using M bits, and the reported value

Among them, SCS is the subcarrier spacing, B c is the coherent bandwidth, and N and M are both positive integers.
A communication device, characterized by including:

A transceiver module configured to receive configuration information sent by the network side device, where the configuration information is used to indicate measuring the coherent bandwidth;

The transceiver module is also configured to receive the reference signal sent by the network side device;

A processing module configured to estimate the downlink channel according to the reference signal and measure the coherence bandwidth.
A communication device, characterized by including:

A transceiver module configured to send configuration information to the terminal device, where the configuration information is used to indicate measuring the coherent bandwidth;

The transceiver module is further configured to send a reference signal for estimating the downlink channel and measuring the coherence bandwidth to the terminal device.
A communication device, characterized in that the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the claims The method according to any one of claims 1 to 9, or the processor executes the computer program stored in the memory, so that the device performs the method according to any one of claims 10 to 17.
A communication device, characterized by including: a processor and an interface circuit;

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

The processor is configured to execute the code instructions to perform the method as claimed in any one of claims 1 to 9, or to execute the code instructions to perform the method as claimed in any one of claims 10 to 17. the method described.
A computer-readable storage medium for storing instructions, which when executed, enable the method according to any one of claims 1 to 9 to be implemented, or when the instructions are executed, enable A method as claimed in any one of claims 10 to 17 is implemented.