WO2021175146A1

WO2021175146A1 - Frequency compensation method and apparatus, network-side device, terminal, and storage medium

Info

Publication number: WO2021175146A1
Application number: PCT/CN2021/077838
Authority: WO
Inventors: 黄秋萍; 卢艺文; 苏昕; 高秋彬
Original assignee: 大唐移动通信设备有限公司
Priority date: 2020-03-05
Filing date: 2021-02-25
Publication date: 2021-09-10
Also published as: CN113364714A; TWI758112B; TW202135566A; CN113364714B

Abstract

Embodiments of the present application provide a frequency compensation method and apparatus, a network-side device, a terminal, and a storage medium. The method comprises: receiving, by using one or more first TRPs, a first uplink signal used for frequency compensation and sent by the terminal; determining, by using the first uplink signal, a frequency compensation value separately corresponding to at least one first TRP; and determining, according to the frequency compensation value separately corresponding to the at least one first TRP, transmission frequency of at least one first TRP separately used for downlink transmission. Therefore, the embodiments of the present application implement the frequency compensation for the at least one first TRP during downlink transmission, effectively eliminate a Doppler spread of a terminal side, and further improve the performance of downlink transmission.

Description

Frequency compensation method, device, network side equipment, terminal and storage medium

Cross-references to related applications

This application claims the priority of the Chinese patent application whose application number is 2020101475821 and the invention title is "frequency compensation method, device, network side equipment, terminal and storage medium" filed on March 5, 2020, which is incorporated by reference in its entirety. Into this article.

Technical field

This application relates to the field of communication technology, and in particular to a frequency compensation method, device, network side equipment, terminal, and storage medium.

Background technique

Multi-point coordination is an important technical means in wireless communication systems. Distributed transmission through multiple distributed transmission points can improve the coverage of the cell edge and reduce the delay and signaling overhead caused by handover.

At present, in the high-speed rail scenario, in order to avoid frequent cell switching of the terminal, the deployment method of SFN (Single Frequency Network) is usually adopted, which is referred to as HST-SFN (High Speed Train-Single Frequency Network) for short. )Scenes. Among them, a typical transmission scheme in the HST-SFN scenario is to simultaneously transmit downlink signals from all RRHs (Remote Radio Heads) connected to one BBU (Base Band Unit). However, the Doppler frequency shift generated by the signals from multiple RRHs forms a Doppler spread, and because the train moves fast, the Doppler frequency shift may vary widely, which causes the terminal to be unable to do so. Demodulate the downlink signal well.

Summary of the invention

Aiming at the problem that in the HST-SFN scenario, the Doppler frequency shift generated by the signals from multiple RRHs causes the terminal to be unable to demodulate the downlink signal well, the embodiments of the present application provide a frequency compensation method, device, Network-side equipment and terminals are used to implement frequency compensation for the transmission frequency of downlink transmission.

The embodiment of the present application provides a frequency compensation method. The frequency compensation method is applied to a network side device and includes:

Use one or more first transmission receiving points TRP to receive the first uplink signal sent by the terminal for frequency compensation;

Determine the frequency compensation value corresponding to each of at least one first TRP by using the first uplink signal;

According to the frequency compensation value corresponding to each of the at least one first TRP, the transmission frequency of each of the at least one first TRP used for downlink transmission is determined.

Optionally, the determining the frequency compensation value corresponding to each of at least one first TRP by using the first uplink signal includes:

The frequency compensation value corresponding to each first TRP is determined by using the first uplink signal.

Performing frequency offset estimation using the first uplink signal to obtain a frequency offset estimation result;

Determine the reference point for frequency compensation;

According to the frequency offset estimation result and the reference point, a frequency compensation value corresponding to at least one first TRP is determined.

Optionally, the performing frequency offset estimation using the first uplink signal to obtain a frequency offset estimation result includes:

At least one first TRP performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values.

Optionally, the determining the reference point for frequency compensation includes:

Determine the reference point according to the set rule or the reference point indication information sent by the terminal.

Optionally, the setting rule includes any one of the following:

The reference point is the frequency offset estimation value corresponding to the designated first TRP determined by the network side device;

The reference point is the frequency offset estimation value with the largest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the frequency offset estimation value with the smallest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the maximum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the minimum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device.

Optionally, the reference point indication information includes any one of the following:

The reference point indication information is indication information about the specified first TRP; wherein the frequency offset estimation value corresponding to the specified first TRP is the reference point;

The reference point indication information is indication information about a downlink signal; wherein the frequency offset estimation value corresponding to the first TRP associated with the indication information of the downlink signal is the reference point;

The reference point indication information is indication information about the first uplink signal; wherein, the network side device uses the frequency offset estimation value estimated by the first uplink signal indicated by the indication information as the reference point.

The at least one first TRP determines the reference point according to the frequency offset estimation result; or

The central processing unit connected to the first TRP included in the network side device determines the reference point according to the frequency offset estimation result.

Optionally, the at least one first TRP determining the reference point according to the frequency offset estimation result includes:

The at least one first TRP performs information exchange on the respective frequency offset estimation values, and determines its own corresponding reference point for determining the frequency compensation according to the information exchanged.

Optionally, the determining the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point includes:

The at least one first TRP determines the respective corresponding frequency compensation value according to the frequency offset estimation result and the reference point; or

The central processing unit connected to the first TRP included in the network side device determines the frequency compensation value corresponding to each of at least one first TRP according to the frequency offset estimation result and the reference point.

Optionally, the at least one first TRP determining the respective corresponding frequency compensation value according to the frequency offset estimation result and the reference point includes:

The at least one first TRP determines its corresponding frequency compensation value according to its corresponding frequency offset estimation value and the reference point.

The second TRP determines the frequency compensation value corresponding to itself according to the frequency offset estimation value corresponding to itself, and sends the determined frequency compensation value or the frequency offset estimation value corresponding to the second TRP to the third TRP; The second TRP is used to characterize a part of the TRP in the first TRP, and the third TRP is used to characterize another part of the TRP in the first TRP.

Optionally, the determining the respective transmission frequency of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP includes:

The second TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by itself;

The third TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by the second TRP or the frequency offset estimation value corresponding to the second TRP.

The at least one first TRP uses the first uplink signal to determine the respective corresponding frequency compensation value; or

The central processing unit connected to the first TRP included in the network side device uses the first uplink signal to determine the frequency compensation value corresponding to each of the at least one first TRP.

Optionally, that the at least one first TRP uses the first uplink signal to determine the respective corresponding frequency compensation value includes:

The at least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values;

The at least one first TRP determines the respective corresponding frequency compensation value according to the respective corresponding frequency offset estimation value.

Optionally, the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP;

The at least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values, including:

The at least one first TRP performs frequency offset estimation on the respective corresponding second uplink signals to obtain respective frequency offset estimation values.

Optionally, it also includes:

Sending the association relationship between the at least one first TRP and the second uplink signal to the terminal.

Optionally, it further includes: the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The transmission configuration of the second uplink signal indicates the TCI state;

The second uplink signal quasi co-located QCL indication information.

An embodiment of the present application provides a frequency compensation method. The frequency compensation method is applied to a terminal and includes:

Generate the first uplink signal for frequency compensation according to the configuration or instruction of the network side device;

The first uplink signal is sent to the network side device, so that the network side device uses one or more first transmission reception points TRP to receive the first uplink signal sent by the terminal, and uses the first uplink signal to determine at least one The frequency compensation value corresponding to each of the first TRPs is determined according to the frequency compensation value corresponding to each of the at least one first TRP, and the transmission frequency of each of the at least one first TRP used for downlink transmission is determined.

Optionally, the first uplink signals used for frequency offset estimation of at least one first TRP are the same.

Optionally, the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP.

Optionally, it also includes:

Receiving the association relationship between the at least one first TRP and the second uplink signal.

Spatial relationship information of the second uplink signal;

The second uplink signal quasi co-located QCL indication information.

Optionally, the association relationship indicates a downlink signal associated with the first uplink signal; the frequency compensation method further includes:

Receiving a downlink signal associated with the second uplink signal;

The sending the first uplink signal to the network side device includes:

Based on the reception of the downlink signal, the first uplink signal is sent to the network side device.

An embodiment of the present application provides a frequency compensation device, where the frequency compensation device is used for network side equipment, and includes:

A receiving module, configured to use one or more first transmission receiving points TRP to receive the first uplink signal for frequency compensation sent by the terminal;

A frequency compensation determining module, configured to use the first uplink signal to determine a frequency compensation value corresponding to each of at least one first TRP;

The transmission frequency determining module is configured to determine the respective transmission frequencies of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP.

An embodiment of the present application provides a frequency compensation device, wherein the frequency compensation device is used in a terminal and includes:

A generating module, configured to generate the first uplink signal for frequency compensation according to the configuration or instruction of the network side device;

The sending module is configured to send the first uplink signal to the network side device, so that the network side device uses one or more first transmission reception points TRP to receive the first uplink signal sent by the terminal, and uses the first uplink signal The uplink signal determines the frequency compensation value corresponding to each of the at least one first TRP, and determines the respective transmission frequency of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP.

An embodiment of the present application provides a network-side device including a memory, a processor, and a program stored in the memory and capable of running on the processor. The network-side device includes a plurality of remote radio heads TRP, and the processor The following steps are implemented when the program is executed:

Using one or more first transmission receiving points TRP to receive the first uplink signal sent by the terminal for frequency compensation;

Optionally, the determining the frequency compensation value corresponding to each of the at least one first TRP by using the first uplink signal includes:

Determine the reference point for frequency compensation;

According to the frequency offset estimation result and the reference point, a frequency compensation value corresponding to each of the at least one first TRP is determined.

Optionally, it also includes:

Optionally, the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The second uplink signal quasi co-located QCL indication information.

An embodiment of the present application provides a terminal, including a memory, a processor, and a program stored on the memory and capable of running on the processor, and the processor implements the following steps when the processor executes the program:

Optionally, it also includes:

Spatial relationship information of the second uplink signal;

The second uplink signal quasi co-located QCL indication information.

Receiving a downlink signal associated with the second uplink signal;

The sending the first uplink signal to the network side device includes:

The embodiment of the present application provides a non-transitory computer-readable storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the steps of the frequency compensation method for the network side device are implemented.

The embodiment of the present application provides a non-transitory computer-readable storage medium on which a computer program is stored, and is characterized in that, when the computer program is executed by a processor, the steps of a frequency compensation method for a terminal are implemented.

The frequency compensation method, device, network-side equipment, terminal, and storage medium provided by the embodiments of the present application use one or more first TRPs to receive the first uplink signal for frequency compensation sent by the terminal, and use the first uplink signal to determine The frequency compensation value corresponding to each of the at least one first TRP, and the transmission frequency of each of the at least one first TRP for downlink transmission is determined according to the frequency compensation value corresponding to each of the at least one first TRP, so that the downlink transmission is performed on each first TRP. When performing downlink transmission, the frequency-compensated transmission frequency can be used for downlink transmission, thereby realizing frequency compensation for at least one first TRP during downlink transmission, effectively eliminating Doppler spread on the terminal side, and improving downlink transmission performance. performance.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description These are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a flowchart of a frequency compensation method provided by an embodiment of the application;

FIG. 2 is a flowchart of a frequency compensation method provided by an embodiment of the application;

FIG. 3 is a block diagram of a frequency compensation device provided by an embodiment of the application;

4 is a block diagram of a frequency compensation device provided by an embodiment of the application;

FIG. 5 is a schematic structural diagram of a terminal provided by an embodiment of this application;

FIG. 6 is a schematic structural diagram of another terminal provided by an embodiment of this application;

FIG. 7 is a schematic structural diagram of a network side device provided by an embodiment of this application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of this application.

In order to clearly describe the technical solutions of the embodiments of the present application, in each embodiment of the present application, if the words "first" and "second" are used to distinguish the same items or similar items with basically the same function and effect, Those skilled in the art can understand that words such as "first" and "second" do not limit the number and execution order.

At present, in the high-speed rail scenario, in order to avoid frequent cell handover of the terminal, the deployment mode of SFN is usually adopted, which is referred to as the HST-SFN scenario for short. Among them, a typical transmission scheme in the HST-SFN scenario is to send downlink signals from all RRHs connected to one BBU at the same time. However, signals from multiple RRHs may experience different Doppler shifts (for example, Doppler shifts from one or some RRHs are positive Doppler shifts, from another one or some The Doppler frequency shift of the RRH is a negative Doppler frequency shift), thereby generating a Doppler spread including a positive and negative Doppler frequency shift. In addition, due to the fast moving speed of the train, the Doppler frequency shift may vary greatly, which will cause the terminal to not be able to demodulate the downlink signal well.

In response to the foregoing problems, the embodiments of the present application provide a frequency compensation method, device, network side equipment, and terminal, which are used to eliminate the Doppler spread experienced by the downlink signal.

The frequency compensation method, device, network-side equipment, terminal, and storage medium provided by the embodiments of the present application can be applied to a wireless communication system or a wireless and wired system. Including but not limited to 5G systems (such as NR systems), 6G systems, satellite systems, car networking systems, Long Term Evolution (LTE) systems, and subsequent evolution communication systems of the aforementioned systems, etc.

The network-side equipment provided by the embodiments of this application may include, but is not limited to, one or more of the following: commonly used base stations, evolved node base stations (eNB), network-side equipment in 5G systems (for example, the following Equipment such as next generation node base station (gNB), transmission and reception point (TRP)).

The terminal provided in the embodiment of the present application may be called a user equipment or the like. Terminals include, but are not limited to, handheld devices and vehicle-mounted devices. For example, it may be a mobile phone, a tablet computer, a notebook computer, an Ultra-Mobile Personal Computer (UMPC), a netbook, or a Personal Digital Assistant (PDA), etc.

The following is described through specific embodiments.

Fig. 1 is a flowchart of a frequency compensation method provided by an embodiment of the application. The frequency compensation method can be used for network-side equipment. For example, the network-side equipment may include a central processing unit and TRP (Transmission Reception Point). Etc., the configuration or instruction of the network side device can be executed by the central processing unit or TRP; as shown in Figure 1, the method includes the following steps:

Step 110: Use one or more first TRPs to receive a first uplink signal for frequency compensation sent by a terminal.

Specifically, multiple first TRPs are grouped (divided into one or more TRP groups), and one or more TRP groups use a part of the first TRPs in the group to perform the first uplink signal sent by the terminal for frequency compensation. Received. For example, each first TRP group uses one first TRP to receive the first uplink signal.

Each first TRP receives the first uplink signal sent by the terminal for frequency compensation.

The first uplink signal may be SRS (Sounding Reference Signal, channel sounding reference signal), random access signal, and other reference signals that can be used for frequency compensation. Among them, the random access signal can be sent through PRACH (Physical Random Access Channel).

In addition, the TRP in the embodiment of the present application may be an antenna unit group of a network side device, an RRH, and so on.

Step 120: Determine the frequency compensation value corresponding to each of the at least one first TRP by using the first uplink signal.

Specifically, at least one TRP of the one or more first TRPs determines its corresponding frequency compensation value.

It should be noted that when the first uplink signal is used to determine the frequency compensation value corresponding to at least one first TRP, the first uplink signal may be used to determine the frequency compensation value corresponding to each first TRP, that is, each first TRP Use the first uplink signal to determine its own corresponding frequency compensation value. That is to say, the number of the first TRP for determining the frequency compensation value is not specifically limited here.

When each first TRP is divided into one or more TRP groups, when the first uplink signal is used to determine the frequency compensation value corresponding to each first TRP, it may include determining the frequency compensation value for each TRP group, and further determine The frequency compensation value corresponding to each first TRP is obtained.

For all the first TRPs in each TRP group, the corresponding frequency compensation values may be the same, and they are all frequency compensation values corresponding to the TRP group. For example, when any TRP group uses a first TRP in the group to receive the first uplink signal, the first uplink signal can be used to determine the frequency compensation value corresponding to the TRP group, and the frequency can be compensated. The value is used as the frequency compensation value corresponding to each first TRP in the TRP group. In this way, if the frequency compensation values corresponding to multiple TRP groups are determined, the frequency compensation value corresponding to each first TRP can be further determined.

In addition, when the first uplink signal is used to determine the frequency compensation value corresponding to each first TRP, the frequency compensation value corresponding to each first TRP may be determined according to the Doppler spectrum of the first uplink signal, or the frequency compensation value corresponding to each first TRP may be determined according to the first uplink signal. The frequency offset estimation value of the signal (for example, the Doppler frequency offset estimation value) determines the frequency compensation value corresponding to each first TRP.

Step 130: Determine the respective transmission frequency of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP.

Specifically, when the first TRP performs downlink transmission, the frequency-compensated transmission frequency can be used, so that the downlink Doppler shift received by the terminal from the first TRP can be controlled within a small difference range (That is, the Doppler spread is eliminated), which can reduce the error of channel estimation and improve the performance of downlink transmission.

It can be seen from the above embodiment that by using one or more first TRPs to receive the first uplink signal for frequency compensation sent by the terminal, the first uplink signal is used to determine the frequency compensation value corresponding to each of the at least one first TRP, according to the at least one The frequency compensation value corresponding to each of the first TRP is determined, and the transmission frequency of at least one first TRP is determined for downlink transmission. In this way, when the first TRP is performing downlink transmission, the frequency-compensated transmission frequency can be used for downlink transmission. The frequency compensation for the first TRP during downlink transmission effectively eliminates the Doppler spread on the terminal side, and also improves the performance of downlink transmission.

Further, based on the foregoing method, the use of the first uplink signal in the step 120 to determine the frequency compensation value corresponding to each of the at least one first TRP may be implemented in but not limited to the following implementation manners:

(1-1-1) Perform frequency offset estimation using the first uplink signal to obtain a frequency offset estimation result.

Optionally, the frequency offset estimation may be performed on the first uplink signal corresponding to the at least one first TRP to obtain the frequency offset estimation value corresponding to the at least one first TRP.

The first uplink signal corresponding to each first TRP may be the same uplink signal or different uplink signals.

Optionally, when each first TRP is divided into one or more TRP groups, the frequency offset of the first uplink signal corresponding to a first TRP in each TRP group may be estimated to obtain the frequency offset corresponding to the TRP group estimated value. Optionally, the frequency offset estimation value corresponding to the TRP group in which any first TRP is located is further used as the frequency offset estimation value corresponding to the first TRP.

(1-1-2) Determine the reference point for frequency compensation.

Specifically, each first TRP determines the frequency compensation value based on the same reference point, which can ensure that the Doppler received by the terminal after compensation is similar. For example, the mutual difference between each first TRP frequency compensation value is equal to their one-way mutual Doppler difference.

Optionally, the reference points corresponding to each first TRP may be the same reference point.

Optionally, when each first TRP is divided into one or more TRP groups, the reference points corresponding to each TRP group may be the same reference point.

It should be noted that the execution order of the above steps (1-1-1) and (1-1-2) is not specifically limited here, that is, the above steps (1-1-1) and (1-1- 2) The two steps may not be specifically distinguished.

(1-1-3) According to the frequency offset estimation result and the reference point, a frequency compensation value corresponding to at least one first TRP is determined.

Specifically, the frequency compensation value corresponding to each first TRP may be determined according to the frequency offset estimation value corresponding to each first TRP and the same reference point corresponding to each first TRP.

For example, if the reference point is f _r , and the estimated frequency offset value of _{the n-th first TRP is f n} , the frequency compensation value of the n-th first TRP is f _r -f _n . Assuming that the n-th first TRP should _{send the downlink signal at the frequency f x} , it needs to be adjusted to send the downlink signal at the frequency f _x +f _r -f _n .

Among them, the reference point may be 0. At this time, if the first n-th estimated frequency offset estimate TRP is F _n, the n-th frequency compensation is a first TRP -fn. Assuming that the n-th first TRP should _{send a downlink signal at the frequency f x} , it needs to be adjusted to send a downlink signal at the frequency f _x- f _n .

Through the adjustment of the above embodiment, when the reference point is _fr , the frequency of the downlink signal from any first TRP received by the terminal will be around f _x + f _y , where f _y is any first TRP The difference between the frequency compensation value and the Doppler shift from the first TRP to the terminal.

It can be seen from the above embodiment that the first uplink signal can be used to estimate the frequency offset, obtain the frequency offset estimation result, and determine the reference point for determining the frequency compensation value, and according to the frequency offset estimation result and the The reference point is to determine the frequency compensation value corresponding to each first TRP, which can achieve the effect of eliminating too much Doppler extension range received by the terminal.

Further, based on the above method, the determination of the reference point for frequency compensation in (1-1-2) can be implemented in but not limited to the following implementation manners:

(1-2-1) Determine the reference point according to the set rule.

Specifically, the reference point used to determine the frequency compensation value may be determined by the network side device. For example; according to some predefined rules to determine.

Further, based on the above method, the setting rules in (1-2-1) may include, but are not limited to, any of the following:

(1-2-2) The reference point is the frequency offset estimation value or the frequency compensation value corresponding to the designated first TRP determined by the network side device;

(1-2-3) The reference point is the frequency offset estimation value with the largest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

(1-2-4) The reference point is the frequency offset estimation value with the smallest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

(1-2-5) The reference point is the maximum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device;

(1-2-6) The reference point is the minimum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device;

(1-2-7) The reference point is an uplink frequency point determined by the network side device.

Optionally, when each first TRP is divided into one or more TRP groups, correspondingly, the above (1-2-2) may be: the reference point is the frequency offset estimation corresponding to the designated or selected TRP group Value or frequency compensation value; the above (1-2-3) may be: the reference point is the frequency offset estimated value with the largest absolute value among the frequency offset estimated values corresponding to each TRP group; the above (1-2-4) may As: the reference point is the frequency offset estimation value with the smallest absolute value among the frequency offset estimation values corresponding to each TRP group; the above (1-2-5) can be: the reference point is the frequency offset estimation value corresponding to each TRP group The maximum value in the absolute value of the value; the above (1-2-6) may be: the reference point is the minimum value in the absolute value of the frequency offset estimation value corresponding to each TRP group.

It can be seen from the foregoing embodiment that the reference point can be determined according to the set rule, and then the frequency compensation value corresponding to each first TRP/TRP group is determined according to the reference point, thereby improving the reliability of determining the reference point.

(1-3-1) Determine the reference point according to the reference point indication information sent by the terminal.

Specifically, the reference point used to determine the frequency compensation value may be determined by the network side device. For example, it is determined according to the reference point indication information sent by the terminal.

Further, based on the foregoing method, the reference point indication information in (1-3-1) may include any one of the following:

(1-3-2) The reference point indication information is indication information about a designated first TRP; wherein the estimated frequency offset corresponding to the designated first TRP is the reference point;

(1-3-3) The reference point indication information is indication information about a downlink signal; wherein the frequency offset estimation value corresponding to the first TRP associated with the indication information of the downlink signal is the reference point;

(1-3-4) The reference point indication information is indication information about the first uplink signal; wherein, the frequency offset estimated by the network side device using the first uplink signal indicated by the indication information is the Reference point.

Optionally, the first TRP in the indication information about the first TRP in (1-3-2) above refers to a designated or selected TRP, and the reference point corresponds to the designated or selected TRP Estimated frequency offset. Wherein, the indication information about the first TRP may refer to information indicating the identity of the first TRP.

Optionally, when each first TRP is divided into one or more TRP groups, the reference point indication information in (1-3-2) above may also be indication information of a designated or selected TRP group. And, the reference point is the estimated value of the frequency offset corresponding to the specified or selected TRP group. Wherein, the indication information about the designated or selected TRP group may refer to information indicating the identity of the designated or selected TRP group.

The indication information about the downlink signal in the above (1-3-3) may refer to the SSB (Synchronization Signal Block, synchronization signal block) identification, TRS (Tracking Refernece Signal, tracking reference signal) identification, etc. Wherein, the indication information about the downlink signal has an association relationship with the TRP, the associated TRP can be determined according to the indication information, and the reference point is the frequency offset estimation value estimated by the network side on the TRP. Or, the network side uses other methods to determine the reference point according to the information obtained by the TRP associated with the indication information of the downlink signal. Note that SSB is sometimes also written as SS/PBCH block, that is, Synchronization Signal/Physical Broadcast Channel Block synchronization signal/broadcast channel block.

In the above (1-3-4), when the reference point indication information is the indication information about the first uplink signal, the reference point may be the frequency estimated by the network side device using the uplink signal indicated by the indication information. Partial estimate.

It can be seen from the above embodiment that the reference point can be determined according to the reference point indication information sent by the terminal, and then the frequency compensation value corresponding to each first TRP/TRP group can be determined according to the reference point, thereby enriching the implementation of determining the reference point , Improve the flexibility of determining the reference point.

Further, based on the above-mentioned method, in the step 120, using the first uplink signal to determine the frequency compensation value corresponding to each of the at least one first TRP may adopt but not limited to the following implementation manners:

(1-4-1) The at least one first TRP uses the first uplink signal to determine the corresponding frequency compensation value; or

Optionally, each first TRP uses the first uplink signal to determine its own corresponding frequency compensation value.

Optionally, when each first TRP is divided into one or more TRP groups, each TRP group can use the first uplink signal to determine its own corresponding frequency compensation value, and then further determine the frequency compensation value corresponding to each first TRP. . Among them, for all the first TRPs in each TRP group, the corresponding frequency compensation values may be the same, and they are all frequency compensation values corresponding to the TRP group.

Optionally, a method for a first TRP or a first TRP group to use a first uplink signal to determine its corresponding frequency compensation value is: use the first uplink signal for frequency offset estimation, and use the frequency offset estimation value as the frequency compensation value.

Optionally, the method for a first TRP or a first TRP group to use a first uplink signal to determine its corresponding frequency compensation value is: use the first uplink signal received by itself for frequency offset estimation, and use the frequency offset estimation value The negative value is used as the frequency compensation value.

(1-4-2) The central processing unit connected to the first TRP included in the network side device uses the first uplink signal to determine the frequency compensation value corresponding to each of the at least one first TRP.

Optionally, when at least one first TRP is divided into one or more TRP groups, the central processing unit may use the first uplink signal to determine the frequency compensation value corresponding to each TRP group, and then further determine that at least one first TRP corresponds to each The frequency compensation value. Among them, for all the first TRPs in each TRP group, the corresponding frequency compensation values may be the same, and they are all frequency compensation values corresponding to the TRP group.

Optionally, the method for the central processing unit to determine the frequency compensation value corresponding to each TRP or TRP group by using the first uplink signal is: performing frequency offset estimation for the first uplink signal received by each TRP or TRP group, and using the frequency offset estimation value As the frequency compensation value.

Optionally, the method for the central processing unit to determine the frequency compensation value corresponding to each TRP or TRP group by using the first uplink signal is: performing frequency offset estimation for the first uplink signal received by each TRP or TRP group, and using the frequency offset estimation value The negative value of is used as the frequency compensation value.

In addition, the central processing unit in the embodiment of the present application may be a processing unit of the network-side device, or may be a BBU, etc., and is applicable to all the following embodiments, and will not be repeated in the following.

It can be seen from the above embodiment that when the first uplink signal is used to determine the frequency compensation value corresponding to each first TRP/TRP group, each first TRP/TRP group can be used to determine its own corresponding frequency compensation value, or it can be It is the frequency compensation value corresponding to each first TRP/TRP group from the central processing unit, thereby enriching the realization methods of determining the frequency compensation value and improving the flexibility of determining the frequency compensation value.

(1-5-1) The at least one first TRP determines the reference point according to the frequency offset estimation result;

Optionally, when at least one first TRP is divided into one or more TRP groups, each TRP group may determine the reference point. For example, a first TRP in each TRP group may determine the reference point, instead of all TRP groups in each TRP group determining the reference point.

(1-5-2) The central processing unit connected to the first TRP included in the network side device determines the reference point according to the frequency offset estimation result.

It can be seen from the above embodiment that when determining the reference point for determining the frequency compensation value, it can be determined by each first TRP/TRP group, or it can be determined by the central processing unit, thereby enriching the implementation of determining the reference point. In this way, the flexibility of determining the reference point is improved.

Further, based on the foregoing method, the at least one first TRP in (1-5-1) determines the reference point according to the frequency offset estimation result, and the following implementation manners may be adopted but not limited to :

Specifically, the at least one first TRP may use the first uplink signal to estimate the frequency offset (or estimate the Doppler frequency offset), the at least one first TRP exchanges information with each other to determine the reference point, and the at least one first TRP is based on The same reference point determines the transmission frequency used for downlink transmission.

Optionally, when at least one first TRP is divided into one or more TRP groups, each TRP group can perform information exchange on the frequency offset estimation value corresponding to each group, and determine the corresponding use for each group according to the information exchanged. Determine the reference point for frequency compensation.

It can be seen from the above embodiment that the respective first TRPs or TRP groups are used to exchange information on their respective frequency offset estimates, and their corresponding reference points for frequency compensation are determined according to the information exchanged, thereby achieving Each first TRP or TRP group jointly determines the same reference point, which enriches the implementation of determining the reference point and improves the flexibility of determining the reference point.

Further, based on the above method, in the (1-1-3), according to the frequency offset estimation result and the reference point, the frequency compensation value corresponding to at least one first TRP may be determined by But not limited to the following implementation methods:

(1-6-1) The at least one first TRP determines the respective corresponding frequency compensation value according to the frequency offset estimation result and the reference point; or

(1-6-2) The central processing unit connected to the first TRP included in the network side device determines the frequency compensation value corresponding to each of at least one first TRP according to the frequency offset estimation result and the reference point.

Optionally, when at least one first TRP is divided into one or more TRP groups, in the above (1-6-1), each TRP group may determine each TRP according to the frequency offset estimation result and the reference point. The frequency compensation value corresponding to each group is further determined, and the frequency compensation value corresponding to at least one first TRP is further determined. Among them, for all the first TRPs in each TRP group, the corresponding frequency compensation values may be the same, and they are all frequency compensation values corresponding to the TRP group.

Optionally, when at least one first TRP is divided into one or more TRP groups, the central processing unit in (1-6-2) above may determine each TRP according to the frequency offset estimation result and the reference point. The frequency compensation value corresponding to each group, and then the frequency compensation value corresponding to each first TRP is further determined. Among them, for all the first TRPs in each TRP group, the corresponding frequency compensation values may be the same, and they are all frequency compensation values corresponding to the TRP group.

Optionally, each TRP or TRP group determines the frequency compensation value corresponding to each TRP or TRP group according to the frequency offset estimation result and the reference point: using the frequency offset estimated value plus the reference point as the frequency compensation value.

Optionally, each TRP or TRP group determines the frequency compensation value corresponding to each TRP or TRP group according to the frequency offset estimation result and the reference point: using the reference point minus the frequency offset estimation value corresponding thereto as the frequency compensation value.

Optionally, the method for the central processing unit to determine the frequency compensation value corresponding to each TRP or TRP group according to the frequency offset estimation result and the reference point is: for each TRP or TRP group, use the frequency offset estimation value corresponding to it plus the reference point As the frequency compensation value.

Optionally, the method for the central processing unit to determine the frequency compensation value corresponding to each TRP or TRP group according to the frequency offset estimation result and the reference point is: for each TRP or TRP group, use the reference point to subtract the frequency offset estimation value corresponding to it. As the frequency compensation value.

It can be seen from the above embodiment that when determining the frequency compensation value corresponding to each first TRP according to the frequency offset estimation result and the reference point, it can be determined by each first TRP/TRP group, or it can be a central processing unit. The unit is determined, thereby enriching the implementation methods of determining the frequency compensation value, and improving the flexibility of determining the frequency compensation value.

Further, based on the above method, the at least one first TRP in (1-6-1) determines the respective frequency compensation value according to the frequency offset estimation result and the reference point, which can be But not limited to the following implementation methods:

The at least one first TRP determines its own corresponding frequency compensation value according to its own corresponding frequency offset estimation value and the reference point.

Optionally, when each first TRP is divided into one or more TRP groups, each TRP group may determine its own corresponding frequency compensation value according to its own corresponding frequency offset estimation value and reference point, and then further determine each first TRP group. A frequency compensation value corresponding to each TRP. Among them, for all the first TRPs in each TRP group, the corresponding frequency compensation values may be the same, and they are all frequency compensation values corresponding to the TRP group.

The frequency offset estimation value of each TRP group may be the frequency offset estimation of the first uplink signal corresponding to a first TRP in each TRP group to obtain the frequency offset estimation value corresponding to the TRP group.

It can be seen from the above embodiment that each first TRP/TRP group can determine its own corresponding frequency offset estimation value, and determine its corresponding frequency based on its own corresponding frequency offset estimation value and the same reference point corresponding to each first TRP The compensation value, thereby enriching the implementation methods of determining the frequency compensation value, and improving the flexibility of determining the frequency compensation value.

Further, based on the above method, in the (1-1-3), according to the frequency offset estimation result and the reference point, the corresponding frequency compensation value can be determined by but not limited to the following implementations Way:

(1-7-1) The second TRP determines the frequency compensation value corresponding to itself according to the frequency offset estimation value corresponding to itself, and sends the determined frequency compensation value or the frequency offset estimation value corresponding to the second TRP to The third TRP; where the second TRP is used to characterize a part of the TRP in the first TRP, and the third TRP is used to characterize another part of the TRP in the first TRP.

Correspondingly, in the step 130, according to the frequency compensation value corresponding to each of the at least one first TRP, the transmission frequency of each of the at least one first TRP is determined to be used for downlink transmission, but the following implementation manners may be adopted but not limited to:

(1-7-2) The second TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by itself;

(1-7-3) The third TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by the second TRP or the frequency offset estimation value corresponding to the second TRP.

Specifically, each first TRP uses the first uplink signal to separately estimate the frequency offset (or estimate the Doppler frequency offset), and the second TRP determines its own corresponding frequency compensation value according to its own corresponding frequency offset estimate, and sends it to the first TRP. The third TRP sends the frequency compensation value estimated by itself, and the third TRP determines its own frequency compensation value according to the frequency compensation value sent by the partial RRH, and uses the frequency compensation value to determine the transmission frequency for downlink transmission.

Wherein, the second TRP may be a first TRP or a TRP group. Among them, a TRP group can include one or more TRPs.

It can be seen from the above embodiment that the second TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by itself; the third TRP determines the frequency compensation value or the second TRP according to the frequency compensation value determined by the second TRP. The frequency offset estimation value corresponding to the TRP determines its own transmission frequency for downlink transmission, thereby reducing the complexity of determining the frequency compensation value and improving the efficiency of frequency compensation.

(1-8-1) At least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values;

(1-8-2) The at least one first TRP determines the respective frequency compensation value according to the respective frequency offset estimation value.

Optionally, in the above (1-8-1), when each first TRP is divided into one or more TRP groups, each TRP group may perform frequency offset estimation on the first uplink signal respectively to obtain respective corresponding Estimated value of the frequency offset. The frequency offset estimation value of each TRP group may be the frequency offset estimation of the first uplink signal corresponding to a first TRP in each TRP group to obtain the frequency offset estimation value corresponding to the TRP group.

In addition, in addition to (1-8-1), the frequency offset estimation of the first uplink signal can be performed by each first TRP to obtain the respective frequency offset estimation values, and the network-side equipment can also include The central processing unit connected to the first TRP uses the first uplink signal to perform frequency offset estimation, obtains the frequency offset estimation value corresponding to each first TRP, and determines the frequency compensation value corresponding to each first TRP.

Optionally, when each first TRP is divided into one or more TRP groups, the central processing unit may perform frequency offset estimation on the first uplink signal to obtain a frequency offset estimation value corresponding to each TRP group. The frequency offset estimation value of each TRP group may be the frequency offset estimation of the first uplink signal corresponding to a first TRP in each TRP group to obtain the frequency offset estimation value corresponding to the TRP group.

In the above (1-8-2), when each first TRP is divided into one or more TRP groups, each TRP group can determine its corresponding frequency compensation value according to its corresponding frequency offset estimation value, and then further determine The frequency compensation value corresponding to each first TRP is obtained. Among them, for all the first TRPs in each TRP group, the corresponding frequency compensation values may be the same, and they are all frequency compensation values corresponding to the TRP group.

In addition, in addition to (1-8-2), each first TRP can determine its corresponding frequency compensation value according to its corresponding frequency offset estimation value, and it can also be included in the network side device connected to the first TRP. The central processing unit determines the frequency compensation value corresponding to each first TRP according to the frequency offset estimation value corresponding to each first TRP.

Optionally, when each first TRP is divided into one or more TRP groups, the central processing unit may determine the frequency compensation value corresponding to each TRP group according to the frequency offset estimation value of each TRP group, and then further determine each TRP group. The frequency compensation value corresponding to each of the first TRP. Among them, for all the first TRPs in each TRP group, the corresponding frequency compensation values may be the same, and they are all frequency compensation values corresponding to the TRP group.

Optionally, each TRP or TRP group determines the corresponding frequency compensation value according to the frequency offset estimation result: using the frequency offset estimation value as the frequency compensation value.

Optionally, each TRP or TRP group determines the corresponding frequency compensation value according to the frequency offset estimation result: using the negative value of the frequency offset estimation value as the frequency compensation value.

Optionally, the method for the central processing unit to determine the frequency compensation value corresponding to each TRP or TRP group according to the frequency offset estimation result is: for each TRP or TRP group, use the frequency offset estimation value corresponding to it as the frequency compensation value.

Optionally, the method for the central processing unit to determine the frequency compensation value corresponding to each TRP or TRP group according to the frequency offset estimation result is: for each TRP or TRP group, use the negative value of the corresponding frequency offset estimation value as the frequency compensation value .

It can be seen from the above embodiment that when the reference point for determining the frequency compensation value is 0, each first TRP/TRP group performs frequency offset estimation (or estimation of Doppler frequency offset) on the first uplink signal. ), the corresponding frequency compensation value can be determined directly according to the corresponding frequency offset estimation value, which further improves the efficiency of frequency compensation.

Further, based on the foregoing method, the downlink transmission in the step 130 may include the transmission of a downlink signal exclusive to the terminal.

Specifically, the terminal-specific downlink signal transmission includes but is not limited to: PDSCH (Physical Downlink Shared Channel), terminal-specific PDCCH (Physical Downlink Control Channel), PDSCH DMRS, PDCCH DMRS, PT-RS (phase reference signal), etc.

It can be seen from the above embodiment that by determining the transmission frequency of each first TRP for downlink transmission according to the corresponding frequency compensation value of each first TRP, this can effectively eliminate the terminal-specific downlink signal transmission during the terminal-specific transmission. The Doppler expansion on the side further improves the performance of the terminal-specific downlink signal transmission.

Further, based on the above method, the frequency offset estimation using the first uplink signal in (1-1-1) to obtain the frequency offset estimation result may be implemented by, but not limited to, the following implementation manners:

(1-9-1) At least one first TRP performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values.

Optionally, when each first TRP is divided into one or more TRP groups, each TRP group may perform frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values. The frequency offset estimation value of each TRP group may be the frequency offset estimation of the first uplink signal corresponding to a first TRP in each TRP group to obtain the frequency offset estimation value corresponding to the TRP group.

It can be seen from the foregoing embodiment that when the frequency offset estimation result is obtained by using the first uplink signal to obtain the frequency offset estimation result, each first TRP/TRP group may perform frequency offset estimation on the first uplink signal to obtain each Corresponding frequency offset estimation value, thereby improving the efficiency of determining the frequency offset estimation value.

Further, based on the above method, each of the first TRPs in (1-8-1) and (1-9-1) may use the same first uplink signal to perform each first TRP Frequency offset estimation.

Further, based on the above method, the first uplink signal in (1-8-1) and (1-9-1) may include the corresponding first TRP for frequency offset estimation. Correspondingly, each of the first TRPs in (1-8-1) and (1-9-1) performs frequency offset estimation on the first uplink signal to obtain their respective corresponding The frequency offset estimation value of, can adopt but not limited to the following implementation methods:

(1-10-1) At least one first TRP performs frequency offset estimation on the respective corresponding second uplink signals to obtain respective frequency offset estimation values.

It can be seen from the above embodiment that each first TRP can use the same first uplink signal for frequency offset estimation, or use the corresponding second uplink signal for frequency offset estimation separately, thereby enriching the implementation of frequency offset estimation and improving The flexibility of frequency offset estimation is improved.

Further, based on the above method, it also includes:

(1-11-1) Send the association relationship between the at least one first TRP and the second uplink signal to the terminal. Optionally, the association relationship is indicated by any of the following messages:

The spatial relationship information (SpatialRelationInfo) of the second uplink signal;

The TCI (Transmission Configuration Indicator) state of the second uplink signal;

The second uplink signal QCL (Quasi Co-Location, quasi co-location) indicates information.

Wherein, the spatial relationship information can be used to indicate the downlink signal associated with the second uplink signal, so that the transmit spatial filter of the uplink signal is determined according to the receive spatial filter of the downlink signal (or the transmit spatial filter of the uplink signal is determined according to the receive beam of the downlink signal). Beam), the first TRP/first TRP group used to send the downlink signal is the first TRP/first TRP group receiving the uplink signal.

Optionally, the form of the TCI (Transmission Configuration Indicator) state of the second uplink signal is similar to that of the TCI state of the downlink signal in the NR system or the LTE system. For example, a TCI state contains a downlink signal of a certain QCL type used to determine the uplink signal.

Optionally, the QCL indication information includes the type of QCL, such as Doppler shift, Doppler Spread, and so on. Alternatively, the QCL indication information is used to indicate the associated downlink signal, and the first TRP/first TRP group sending the downlink signal is the same as the first TRP/first TRP group receiving the second uplink signal.

It can be seen from the above embodiment that by sending the association relationship between each of the first TRPs and the second uplink signal to the terminal, the terminal can send the corresponding first uplink signal to the network side device according to the association relationship, and the first uplink signal The signal may include the second uplink signal used for frequency offset estimation corresponding to each first TRP, thereby improving the reliability of frequency compensation.

FIG. 2 is a flowchart of a frequency compensation method provided by an embodiment of the application. The frequency compensation method may be used in a terminal; as shown in FIG. 2, the method includes the following steps:

Step 210: Generate a first uplink signal for frequency compensation according to the configuration or instruction of the network side device.

Specifically, the terminal may send the first uplink signal based on the configuration of the network side, that is, the network side sends configuration information, and the terminal sends the first uplink signal according to this configuration information; it may also be that the network side sends the configuration information of the first uplink signal However, an indication information is also needed to instruct the terminal to send the first uplink signal (for example, through trigger signaling or activation signaling), and the user equipment UE can send the first uplink signal only after receiving the indication information.

Optionally, the network side device includes a central processing unit and a TRP, and the configuration or instructions of the network side device may be executed by the central processing unit or the TRP.

Step 220: Send the first uplink signal to the network side device, so that the network side device uses one or more first TRPs to receive the first uplink signal sent by the terminal, and uses the first uplink signal to determine the respective corresponding to at least one first TRP. The frequency compensation value determines the transmission frequency of each of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP.

Optionally, multiple first TRPs are grouped (divided into one or more TRP groups), and one or more TRP groups use a part of the first TRPs in the group for the first uplink sent by the terminal for frequency compensation Signal reception. For example, each first TRP group uses one first TRP to receive the first uplink signal.

Optionally, at least one first TRP receives the first uplink signal for frequency compensation sent by the terminal.

Wherein, the first uplink signal may be an SRS, a random access signal, and other reference signals that can be used for frequency compensation. Among them, the random access signal can be sent through PRACH.

It can be seen from the above embodiment that the first uplink signal for frequency compensation can be generated according to the configuration or instruction of the network side device, and the first uplink signal is sent to the network side device, so that the network side device can use one or more The first TRP receives the first uplink signal sent by the terminal; uses the first uplink signal to determine the frequency compensation value corresponding to each of the at least one first TRP; and determines each of the at least one first TRP according to the frequency compensation value corresponding to each of the at least one first TRP. The transmission frequency used for downlink transmission, so that when at least one first TRP is performing downlink transmission, the frequency-compensated transmission frequency can be used for downlink transmission, thereby realizing frequency compensation for the at least one first TRP when performing downlink transmission, The Doppler spread on the terminal side is effectively eliminated, and the performance of downlink transmission is also improved.

Further, based on the foregoing method, the first uplink signals used for frequency offset estimation of the at least one first TRP in the step 220 may be the same.

Further, based on the foregoing method, the first uplink signal in the step 220 includes a second uplink signal used for frequency offset estimation corresponding to each first TRP.

Further, based on the above method, the frequency compensation method further includes:

(2-1-1) Receive the association relationship between the at least one first TRP and the second uplink signal.

The TCI state of the second uplink signal;

The second uplink signal QCL indicates information.

Further, based on the above method, the association relationship in (2-1-1) indicates a downlink signal associated with the first uplink signal; the frequency compensation method further includes:

(2-2-1) Receive a downlink signal associated with the second uplink signal;

Correspondingly, the sending of the first uplink signal to the network side device in the step 220 may adopt but not limited to the following implementation manners:

(2-3-1) Based on the reception of the downlink signal, sending the first uplink signal to the network side device.

Specifically, the terminal may perform downlink signal detection, obtain a downlink frequency point, and send the first uplink signal based on the downlink frequency point. Among them, the downlink signal can be SSB or TRS.

Optionally, the terminal determines a downlink frequency point based on a downlink signal, and determines an uplink frequency point based on the downlink frequency point, and then uses the uplink frequency point as an uplink frequency point for sending all the first uplink signals.

Optionally, the terminal determines multiple downlink frequency points based on multiple downlink signals, and determines multiple uplink frequency points based on the multiple downlink frequency points, and then uses these uplink frequency points as uplink frequency points for sending the first uplink signal. For example, the first uplink signal includes multiple second uplink signals, and each second uplink signal is associated with a TRP or a downlink signal sent by a TRP group, and the uplink frequency of any second uplink signal is based on the uplink frequency associated with it. The downlink frequency point determined by the downlink signal is determined.

Optionally, a manner in which the terminal determines the uplink frequency point based on the downlink frequency point is: the uplink frequency point is equal to the downlink frequency point plus the downlink frequency deviation. The uplink and downlink frequency deviations are indicated to the terminal by the network equipment, or stipulated by the protocol, or determined by the terminal according to the indication information of the network equipment.

In the embodiments of the present application, both the uplink frequency point and the downlink frequency point are reference frequencies, that is, frequencies that can be used to determine the frequency position of the downlink radio frequency channel and/or SSB and/or other units. For example, the downlink frequency point is a reference frequency used to determine the downlink transmission frequency of downlink channels (such as PDSCH, PDCCH, etc.), SSB, and downlink reference signals (such as downlink DMRS, CSI-RS, TRS). For example, the uplink frequency point is a reference frequency used to determine the frequency of uplink transmission such as uplink channel (PUSCH, PUCCH, PRACH, etc.), uplink reference signal (for example, SRS).

Optionally, the terminal may determine the frequency of the uplink signal based on the downlink signal; determine the transmit spatial filter of the uplink signal based on the receive spatial filter of the downlink signal; determine the transmit beam of the uplink signal based on the receive beam of the downlink signal; etc.

It can be seen from the above embodiment that for each first TRP, the terminal can send the same first uplink signal, or can also send the second uplink signal corresponding to each first TRP, thereby enriching the frequency compensation methods and improving the flexibility of frequency compensation. sex.

The following describes the frequency compensation methods shown in FIG. 1 and FIG. 2 through specific examples.

Example 1:

A BBU is connected to 4 TRPs. According to the running direction of the train, the order in which the train passes through these TRPs will be TRP1, TRP2, TRP3, and TRP4. Assuming that the frequency of the downlink signal is f _DL , the Doppler frequency offset of TRP and the terminal is an ideal estimate. The unidirectional Doppler frequency shifts of TRP1, TRP2, TRP3, and TRP4 are f1, f2, f3, and f4, respectively. The reference point for compensation is f0+f1, and the frequency compensation value is the difference between the reference point and the Doppler shift value estimated by TRP.

Among them, the frequency when the downlink signal from each TRP arrives at the UE without frequency compensation (assuming that the offset of the downlink signal resource position relative to the downlink frequency is not considered) is: TRP1 is f _DL + f1; TRP2 is f _DL + f2; TRP3 is f _DL +f2; TRP4 is f _DL +f2;

Assume that the uplink frequency point determined by the terminal is: f _UL ;

Then the frequency when the uplink signal received by TRP reaches the TRP (assuming that the offset of the uplink signal resource position relative to the downlink frequency is not considered) is: TRP1 is f _UL + f1; TRP2 is f _UL + f2; TRP3 is f _UL + f3; TRP4 is f _UL + f4;

TRP uses the following frequency compensation values: TRP1 is f0; TRP2 is f0+f1-f2; TRP3 is f0+f1-f3; TRP4 is f0+f1-f4;

Then the frequency of the downlink signal from each TRP arriving at the UE after frequency compensation is: TRP1 is f _DL +f0+f1; TRP2 is f _DL +f0+f1; TRP3 is f _DL +f0+f1; TRP4 is f _DL + f0+f1.

It can be seen that the Doppler frequency shift of the downlink signal from each TRP received by the terminal is the same, and the terminal can more easily estimate the Doppler frequency shift and obtain better downlink reception performance.

Example 2:

A BBU is connected to 4 TRPs. According to the running direction of the train, the order in which the train passes through these TRPs will be TRP1, TRP2, TRP3, and TRP4. Among them, assuming that the Doppler frequency offset of TRP and the terminal is an ideal estimate, the unidirectional Doppler frequency shifts of TRP1, TRP2, TRP3, and TRP4 are f1, f2, f3, and f4, respectively, and f0 is the uplink frequency point determined by the terminal. The difference between the actual line frequency and the Doppler shift value estimated by TRP whose frequency compensation value is negative.

Among them, the frequency (downlink receiving frequency) of the downlink signal from each TRP that reaches the UE without frequency compensation: TRP1 is f _DL + f1; TRP2 is f _DL + f2; TRP3 is f _DL + f2; TRP4 is f _DL + f2;

The uplink frequency point determined by the terminal is: f _UL ;

The frequency when the uplink signal received by TRP reaches the TRP: TRP1 is f _UL + f1; TRP2 is f _UL + f2; TRP3 is f _UL + f3; TRP4 is f _UL + f4;

Each TRP uses the following frequency compensation values: TRP1 is f0-f1; TRP2 is f0-f2; TRP3 is f0-f2; TRP4 is f0-f2;

Then the frequency of the downlink signal from each TRP arriving at the UE after frequency compensation is: TRP1 is f _DL + f0; TRP2 is f _DL + f0; TRP3 is f _DL + f0; TRP4 is f _DL + f0.

It can be seen that under the solution of this application, the Doppler frequency shift of the downlink signal from each TRP received by the UE is the same, and the UE can more easily estimate the Doppler frequency shift and obtain better downlink reception performance. .

Figure 3 is a block diagram of a frequency compensation device provided by an embodiment of the application. The frequency compensation device can be used for network-side equipment. For example, the network-side equipment can include BBU, TRP, etc.; as shown in Figure 3, the frequency compensation The device may include:

The receiving module 31 is configured to use one or more first transmission receiving points TRP to receive the first uplink signal used for frequency compensation sent by the terminal;

The frequency compensation determining module 32 is configured to use the first uplink signal to determine the frequency compensation value corresponding to each of the at least one first TRP;

The transmission frequency determining module 33 is configured to determine the transmission frequency of each of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP.

Further, based on the above-mentioned device, the frequency compensation determining module is configured to determine the frequency compensation value corresponding to each first TRP by using the first uplink signal.

Further, based on the above device, the frequency compensation determining module includes:

A frequency offset estimation sub-module, configured to use the first uplink signal to perform frequency offset estimation to obtain a frequency offset estimation result;

The reference point determination sub-module is used to determine the reference point used for frequency compensation;

The frequency compensation value determining sub-module is configured to determine the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point.

Further, based on the above device, the frequency offset estimation submodule is specifically configured to:

Further, based on the above-mentioned device, the reference point determination submodule is specifically configured to:

Further, based on the above device, the setting rule includes any one of the following:

Further, based on the foregoing device, the reference point indication information includes any one of the following:

The reference point indication information is indication information about the first uplink signal; wherein, the frequency offset estimated by the network side device using the first uplink signal indicated by the indication information is the reference point.

Further, based on the above-mentioned device, the reference point determination sub-module includes:

A first determining unit, configured to determine the reference point according to the frequency offset estimation result by the at least one first TRP; or

The second determining unit is configured to determine the reference point according to the frequency offset estimation result by the central processing unit connected to the first TRP included in the network side device.

Further, based on the foregoing device, the first determining unit is specifically configured to:

Further, based on the above device, the frequency compensation value determining sub-module includes:

The third determining unit is specifically configured to determine the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point; or

The fourth determining unit is specifically configured to determine the frequency compensation corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point by the central processing unit connected to the first TRP included in the network side device value.

Further, based on the foregoing device, the third determining unit is specifically configured to:

Further, based on the above device, the frequency compensation value determining submodule is specifically configured to:

Further, based on the above device, the transmission frequency determination module includes:

The first frequency determining submodule is configured to determine the transmission frequency used by the second TRP for downlink transmission according to the frequency compensation value determined by the second TRP;

The second frequency determining submodule is configured to determine the transmission frequency used by the third TRP for downlink transmission according to the frequency compensation value determined by the second TRP or the frequency offset estimation value corresponding to the second TRP.

A first processing sub-module, configured to determine the respective corresponding frequency compensation value by the at least one first TRP using the first uplink signal; or

The second processing sub-module is used for the central processing unit connected to the first TRP included in the network side device to determine the frequency compensation value corresponding to each of the at least one first TRP by using the first uplink signal.

Further, based on the foregoing device, the first processing submodule is specifically configured to:

Further, based on the foregoing device, the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP;

Further, based on the above device, it also includes:

The association relationship sending module is configured to send the association relationship between the at least one first TRP and the second uplink signal to the terminal.

Further, based on the above device, the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The second uplink signal quasi co-located QCL indication information.

It should be noted here that the device provided in this embodiment can implement all the method steps that can be implemented in the above method embodiments, and can achieve the same beneficial effects. The same content and beneficial effects will be repeated.

FIG. 4 is a block diagram of a frequency compensation device provided by an embodiment of the application. The frequency compensation device may be used in a terminal; as shown in FIG. 4, the frequency compensation device may include:

The generating module 41 is configured to generate the first uplink signal for frequency compensation according to the configuration or instruction of the network side device;

The sending module 42 is configured to send the first uplink signal to the network side device, so that the network side device uses one or more first transmission reception points TRP to receive the first uplink signal sent by the terminal, and uses the first uplink signal An uplink signal determines the frequency compensation value corresponding to each of the at least one first TRP, and determines the respective transmission frequency of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP.

Further, based on the foregoing device, the first uplink signals used for frequency offset estimation of at least one first TRP are the same.

Further, based on the foregoing device, the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP.

Further, based on the above device, the frequency compensation device further includes:

The association relationship receiving module is configured to receive the association relationship between the at least one first TRP and the second uplink signal; optionally, the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The second uplink signal quasi co-located QCL indication information.

Further, based on the foregoing device, the association relationship indicates a downlink signal associated with the first uplink signal; the frequency compensation device further includes:

An association relationship receiving module, configured to receive a downlink signal associated with the second uplink signal;

Correspondingly, the sending module 42 may include:

The sending submodule is configured to send the first uplink signal to the network side device based on the reception of the downlink signal.

FIG. 5 is a schematic structural diagram of a terminal provided by an embodiment of the application. As shown in FIG. 5, the terminal 500 may include: at least one processor 501, a memory 502, at least one network interface 504, and other user interfaces 503. The various components in the terminal 500 are coupled together through the bus system 505. It can be understood that the bus system 505 is used to implement connection and communication between these components. In addition to the data bus, the bus system 505 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clear description, various buses are marked as the bus system 505 in FIG. 5.

Wherein, the user interface 503 may include a display, a keyboard, or a pointing device, such as a mouse, a trackball, a touch panel, or a touch screen.

It can be understood that the memory 502 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) And Direct Rambus RAM (DRRAM). The memory 502 of the system and method described in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

In some embodiments, the memory 502 stores the following elements, executable modules or data structures, or their subsets, or their extended sets, such as the operating system 5021 and application programs 5022.

Among them, the operating system 5021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks. The application program 5022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services. The program for implementing the method of the embodiment of the present application may be included in the application program 5022.

In the embodiment of the present application, by calling a computer program or instruction stored in the memory 502, specifically, a computer program or instruction stored in the application program 5022, the processor 501 is used to:

The first uplink signal is sent to the network side device, so that the network side device uses one or more first transmission reception points TRP to receive the first uplink signal sent by the terminal, and uses the first uplink signal to determine at least one The frequency compensation value corresponding to each of the first TRPs is determined according to the frequency compensation value corresponding to each of the at least one first TRP, and the transmission frequency of the at least one first TRP respectively used for downlink transmission is determined.

The method disclosed in the foregoing embodiment of the present application may be applied to the processor 501 or implemented by the processor 501. The processor 501 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 501 or instructions in the form of software. The aforementioned processor 501 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 502, and the processor 501 reads the information in the memory 502, and completes the steps of the foregoing method in combination with its hardware.

It can be understood that the embodiments described in this application can be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (Digital Signal Processing, DSP), digital signal processing equipment (DSP Device, DSPD), programmable Logic device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, and others for performing the functions described in this application Electronic unit or its combination.

For software implementation, the described technology can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present application. The software codes can be stored in the memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

Optionally, as another embodiment, the processor 501 is further configured to: the first uplink signals used for frequency offset estimation of the at least one first TRP are the same.

Optionally, as another embodiment, the processor 501 is further configured to: the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP.

Optionally, as another embodiment, the processor 501 is further configured to: receive an association relationship between the at least one first TRP and the second uplink signal; optionally, the association relationship is received through any of the following messages instruct:

Spatial relationship information of the second uplink signal;

The second uplink signal quasi co-located QCL indication information.

Optionally, as another embodiment, the association relationship indicates a downlink signal associated with the first uplink signal; the processor 501 is further configured to:

Receiving a downlink signal associated with the second uplink signal;

The sending the first uplink signal to the network side device includes:

The terminal provided in the embodiment of the present application can implement the various processes implemented by the terminal in the foregoing embodiment, and in order to avoid repetition, details are not described herein again.

Figure 6 is a schematic structural diagram of another terminal provided by an embodiment of the application. The terminal in Figure 6 can be a mobile phone, a tablet computer, a personal digital assistant (PDA), or an e-reader, a handheld game console, Point of Sales (POS), in-vehicle electronic equipment (in-vehicle computer), etc. As shown in FIG. 6, the terminal includes a radio frequency (RF) circuit 610, a memory 620, an input unit 630, a display unit 640, a processor 660, an audio circuit 670, a WiFi (Wireless Fidelity) module 680, and a power supply 690. Those skilled in the art can understand that the structure of the mobile phone shown in FIG. 6 does not constitute a limitation on the mobile phone, and may include more or less components than those shown in the figure, or combine certain components, or split certain components, or Different component arrangements.

Wherein, the input unit 630 can be used to receive numeric or character information input by the user, and generate signal input related to user settings and function control of the terminal. Specifically, in the embodiment of the present application, the input unit 630 may include a touch panel 6301. The touch panel 6301, also called a touch screen, can collect the user's touch operations on or near it (for example, the user's operations on the touch panel 6301 with fingers, stylus, or any other suitable objects or accessories), and can be set according to the preset The specified program drives the corresponding connection device. Optionally, the touch panel 6301 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch position, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 660, and can receive and execute the commands sent by the processor 660. In addition, the touch panel 6301 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 6301, the input unit 630 may also include other input devices 6302, and the other input devices 6302 may be used to receive input numbers or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, other input devices 6302 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, optical mice (optical mice are touch sensitive that do not display visual output). A surface, or an extension of a touch-sensitive surface formed by a touch screen).

Among them, the display unit 640 can be used to display information input by the user or information provided to the user and various menu interfaces of the terminal. The display unit 640 may include a display panel 6401. The display panel 8401 may be configured with the display panel 6401 in the form of a liquid crystal display (Liquid Crystal Display, LCD), an organic light-emitting diode (Organic Light-Emitting Diode, OLED), etc.

It should be noted that the touch panel 6301 can cover the display panel 6401 to form a touch screen. When the touch screen detects a touch operation on or near it, it transmits it to the processor 660 to determine the type of touch event, and then the processor 660 provides corresponding visual output on the touch screen according to the type of touch event.

The touch screen includes an application program interface display area and a common control display area. The arrangement of the display area of the application program interface and the display area of the commonly used controls is not limited, and can be arranged up and down, left and right, etc., which can distinguish the two display areas. The application program interface display area can be used to display the application program interface. Each interface may include at least one application icon and/or widget desktop control and other interface elements. The application program interface display area can also be an empty interface that does not contain any content. The commonly used control display area is used to display controls with a higher usage rate, such as application icons such as setting buttons, interface numbers, scroll bars, and phonebook icons.

The RF circuit 610 can be used for receiving and sending signals during information transmission or communication. In particular, after receiving the downlink information on the network side, it is processed by the processor 660; in addition, the designed uplink data is sent to the network side. Generally, the RF circuit 610 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier (LNA), a duplexer, and the like. In addition, the RF circuit 610 can also communicate with the network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile Communication (GSM), General Packet Radio Service (GPRS), Code Division Multiple Access (Code Division) Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), Email, Short Messaging Service (SMS), etc.

The memory 620 is used to store software programs and modules, and the processor 660 executes various functional applications and data processing of the terminal by running the software programs and modules stored in the memory 620. The memory 620 may mainly include a program storage area and a data storage area. The program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data (such as audio data, phone book, etc.) created by the use of the terminal, etc. In addition, the memory 620 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

The processor 660 is the control center of the terminal, which uses various interfaces and lines to connect to various parts of the entire mobile phone, runs or executes the software programs and/or modules stored in the first memory 6201, and calls the software programs and/or modules stored in the second memory 6202. The data in the terminal performs various functions of the terminal and processes the data, so as to monitor the terminal as a whole. Optionally, the processor 660 may include one or more processing units.

In the embodiment of the present application, by calling and storing the software program and/or module in the first memory 6201 and/or data in the second memory 6202, the processor 660 is configured to:

Optionally, as another embodiment, the processor 660 is further configured to: the first uplink signals used for frequency offset estimation of the at least one first TRP are the same.

Optionally, as another embodiment, the processor 660 is further configured to: the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP.

Optionally, as another embodiment, the processor 660 is further configured to: receive an association relationship between the at least one first TRP and the second uplink signal; optionally, the association relationship is received through any of the following messages instruct:

Spatial relationship information of the second uplink signal;

The second uplink signal quasi co-located QCL indication information.

Optionally, as another embodiment, the association relationship indicates a downlink signal associated with the first uplink signal; the processor 660 is further configured to:

Receiving a downlink signal associated with the second uplink signal;

The sending the first uplink signal to the network side device includes:

It can be seen from the above embodiment that the first uplink signal for frequency compensation can be generated according to the configuration or instruction of the network side device, and the first uplink signal is sent to the network side device, so that the network side device can use one or more The first TRP receives the first uplink signal sent by the terminal; the first uplink signal is used to determine the frequency compensation value corresponding to each first TRP; according to the frequency compensation value corresponding to each first TRP, it is determined that each first TRP is used for downlink The transmission frequency of the transmission allows each first TRP to use the frequency-compensated transmission frequency for downlink transmission when performing downlink transmission, thereby realizing frequency compensation for each first TRP during downlink transmission, effectively eliminating the terminal The Doppler expansion on the side also improves the performance of downlink transmission.

FIG. 7 is a schematic structural diagram of a network-side device provided by an embodiment of the application. As shown in FIG. 7, the network-side device 700 may include at least one processor 701, a memory 702, at least one other user interface 703, and a transceiver机704. The components in the network side device 700 are coupled together through the bus system 705. It can be understood that the bus system 705 is used to implement connection and communication between these components. In addition to the data bus, the bus system 705 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, various buses are marked as the bus system 705 in FIG. 7. The bus system may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 701 and the memory 702 The various circuits of the representative memory are linked together. The bus system can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art. Therefore, the embodiments of the present application will not further describe them. . The bus interface provides the interface. The transceiver 704 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 703 may also be an interface that can externally and internally connect the required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

It can be understood that the memory 702 in the embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (Double Data Rate SDRAM, DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), Synchronous Link Dynamic Random Access Memory (Synchlink DRAM, SLDRAM) And Direct Rambus RAM (DRRAM). The memory 702 of the system and method described in the embodiments of the present application is intended to include, but is not limited to, these and any other suitable types of memory.

The processor 701 is responsible for managing the bus system and general processing. The memory 702 may store computer programs or instructions used by the processor 701 when performing operations. Specifically, the processor 701 may be used for:

The method disclosed in the foregoing embodiment of the present application may be applied to the processor 701 or implemented by the processor 701. The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 701 or instructions in the form of software. The aforementioned processor 701 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. Combining the steps of the method disclosed in the embodiments of the present application may be directly embodied as execution and completion by a hardware decoding processor, or execution and completion by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702, and completes the steps of the foregoing method in combination with its hardware.

The frequency compensation value corresponding to each first TRP is determined by using the first uplink signal. Optionally, the determining the frequency compensation value corresponding to each of the at least one first TRP by using the first uplink signal includes:

Determine the reference point for frequency compensation;

Optionally, the setting rule includes any one of the following:

At least one first TRP performs information exchange on the respective frequency offset estimation values, and determines its own corresponding reference point for determining frequency compensation according to the information exchanged.

The central processing unit connected to the first TRP included in the network side device determines the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point.

Optionally, it also includes:

Spatial relationship information of the second uplink signal;

The second uplink signal quasi co-located QCL indication information.

The network-side device provided in the embodiment of the present application can implement the various processes implemented by the network-side device in the foregoing embodiment. To avoid repetition, details are not described herein again.

It can be seen from the above embodiment that one or more first TRPs are used to receive the first uplink signal for frequency compensation sent by the terminal, and the first uplink signal is used to determine the frequency compensation value corresponding to each of the at least one first TRP. The frequency compensation value corresponding to each first TRP determines the transmission frequency of at least one first TRP each used for downlink transmission, so that when at least one first TRP is performing downlink transmission, the frequency-compensated transmission frequency can be used for downlink transmission. In this way, frequency compensation for each first TRP during downlink transmission is realized, the Doppler spread on the terminal side is effectively eliminated, and the performance of downlink transmission is also improved.

The foregoing mainly introduces the solution provided in the embodiment of the present application from the perspective of the network side device. It can be understood that, in order to implement the foregoing functions, the network-side device provided in the embodiments of the present application includes hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of the examples described in the embodiments disclosed in the present application, the present application can be implemented in the form of hardware or a combination of hardware and computer software.

Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiments of the present application may divide the network side devices and the like into functional modules according to the foregoing method examples. For example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules.

It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, only the division of the above-mentioned functional modules is used as an example. In practical applications, the above-mentioned functions can be allocated by different functional modules as required, namely The internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the above-described system, device, and unit, reference may be made to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be divided. It can be combined or integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections may be indirect couplings or communication connections between devices or units through some interfaces.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

In addition, the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of a software functional unit.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, all or part of the technical solution can be embodied in the form of a computer software product. The computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server). , Or a network device, etc.) or a processor executes all or part of the steps of the method described in each embodiment of the present application. The computer storage medium is a nontransitory (English: nontransitory) medium, including: flash memory, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

On the other hand, the embodiments of the present application also provide a non-transitory computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to perform the methods provided in the foregoing embodiments, including:

According to the frequency compensation value corresponding to each of the at least one first TRP, the transmission frequency each of the at least one first TRP is used for downlink transmission is determined.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the application, not to limit them; although the application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions recorded in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

A frequency compensation method, characterized in that the frequency compensation method is applied to a network side device, and includes:

Using one or more first transmission receiving points TRP to receive the first uplink signal sent by the terminal for frequency compensation;

Determine the frequency compensation value corresponding to each of at least one first TRP by using the first uplink signal;

According to the frequency compensation value corresponding to each of the at least one first TRP, the transmission frequency of each of the at least one first TRP used for downlink transmission is determined.
The frequency compensation method according to claim 1, wherein the determining the frequency compensation value corresponding to each of at least one first TRP by using the first uplink signal comprises:

The frequency compensation value corresponding to each first TRP is determined by using the first uplink signal.
The frequency compensation method according to claim 1, wherein the determining the frequency compensation value corresponding to each of at least one first TRP by using the first uplink signal comprises:

Performing frequency offset estimation using the first uplink signal to obtain a frequency offset estimation result;

Determine the reference point for frequency compensation;

According to the frequency offset estimation result and the reference point, a frequency compensation value corresponding to each of the at least one first TRP is determined.
The frequency compensation method according to claim 3, wherein said using the first uplink signal to perform frequency offset estimation to obtain a frequency offset estimation result comprises:

At least one first TRP performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values.
The frequency compensation method according to claim 3, wherein said determining a reference point for frequency compensation comprises:

Determine the reference point according to the set rule or the reference point indication information sent by the terminal.
The frequency compensation method according to claim 5, wherein the setting rule comprises any one of the following:

The reference point is the frequency offset estimation value corresponding to the designated first TRP determined by the network side device;

The reference point is the frequency offset estimation value with the largest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the frequency offset estimation value with the smallest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the maximum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the minimum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device.
The frequency compensation method according to claim 5, wherein the reference point indication information includes any one of the following:

The reference point indication information is indication information about the specified first TRP; wherein the frequency offset estimation value corresponding to the specified first TRP is the reference point;

The reference point indication information is indication information about a downlink signal; wherein the frequency offset estimation value corresponding to the first TRP associated with the indication information of the downlink signal is the reference point;

The reference point indication information is indication information about the first uplink signal; wherein, the network side device uses the frequency offset estimation value estimated by the first uplink signal indicated by the indication information as the reference point.
The frequency compensation method according to claim 3, wherein said determining a reference point for frequency compensation comprises:

The at least one first TRP determines the reference point according to the frequency offset estimation result; or

The central processing unit connected to the first TRP included in the network side device determines the reference point according to the frequency offset estimation result.
The frequency compensation method according to claim 8, wherein the at least one first TRP determining the reference point according to the frequency offset estimation result comprises:

The at least one first TRP performs information exchange on the respective frequency offset estimation values, and determines its own corresponding reference point for determining the frequency compensation according to the information exchanged.
The frequency compensation method according to any one of claims 3 to 5, wherein the frequency compensation value corresponding to each of the at least one first TRP is determined according to the frequency offset estimation result and the reference point, include:

The at least one first TRP determines the respective corresponding frequency compensation value according to the frequency offset estimation result and the reference point; or

The central processing unit connected to the first TRP included in the network side device determines the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point.
The frequency compensation method according to claim 10, wherein the at least one first TRP determines the respective corresponding frequency compensation value according to the frequency offset estimation result and the reference point, comprising:

The at least one first TRP determines its corresponding frequency compensation value according to its corresponding frequency offset estimation value and the reference point.
The frequency compensation method according to claim 3, wherein the determining the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point comprises:

The second TRP determines the frequency compensation value corresponding to itself according to the frequency offset estimation value corresponding to itself, and sends the determined frequency compensation value or the frequency offset estimation value corresponding to the second TRP to the third TRP; The second TRP is used to characterize a part of the TRP in the first TRP, and the third TRP is used to characterize another part of the TRP in the first TRP.
The frequency compensation method according to claim 12, wherein the determining the transmission frequency of each of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP comprises :

The second TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by itself;

The third TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by the second TRP or the frequency offset estimation value corresponding to the second TRP.
The frequency compensation method according to any one of claims 1 to 5, wherein the determining the frequency compensation value corresponding to each of at least one first TRP by using the first uplink signal comprises:

The at least one first TRP uses the first uplink signal to determine the respective corresponding frequency compensation value; or

The central processing unit connected to the first TRP included in the network side device uses the first uplink signal to determine the frequency compensation value corresponding to each of the at least one first TRP.
The frequency compensation method according to claim 14, wherein the at least one first TRP uses the first uplink signal to determine the respective corresponding frequency compensation values, comprising:

The at least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values;

The at least one first TRP determines the respective corresponding frequency compensation value according to the respective corresponding frequency offset estimation value.
The frequency compensation method according to claim 15, wherein the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP;

The at least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values, including:

The at least one first TRP performs frequency offset estimation on the respective corresponding second uplink signals to obtain respective frequency offset estimation values.
The frequency compensation method according to claim 16, further comprising:

Sending the association relationship between the at least one first TRP and the second uplink signal to the terminal.
The frequency compensation method according to claim 17, further comprising: the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The transmission configuration of the second uplink signal indicates the TCI state;

The second uplink signal quasi co-located QCL indication information.
A frequency compensation method, characterized in that the frequency compensation method is applied to a terminal, and includes:

Generate the first uplink signal for frequency compensation according to the configuration or instruction of the network side device;

The first uplink signal is sent to the network side device, so that the network side device uses one or more first transmission reception points TRP to receive the first uplink signal sent by the terminal, and uses the first uplink signal to determine at least one According to the frequency compensation value corresponding to each of the first TRP, the transmission frequency of each of the at least one first TRP used for downlink transmission is determined according to the frequency compensation value corresponding to each of the at least one first TRP.
The frequency compensation method according to claim 19, wherein the first uplink signals used by the at least one first TRP for frequency offset estimation are the same.
The frequency compensation method according to claim 19, wherein the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP.
The frequency compensation method according to claim 21, further comprising:

Receiving the association relationship between the at least one first TRP and the second uplink signal.
The frequency compensation method according to claim 22, further comprising: the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The transmission configuration of the second uplink signal indicates the TCI state;

The second uplink signal quasi co-located QCL indication information.
The frequency compensation method according to claim 23, wherein the association relationship indicates a downlink signal associated with the first uplink signal; the frequency compensation method further comprises:

Receiving a downlink signal associated with the second uplink signal;

The sending the first uplink signal to the network side device includes:

Based on the reception of the downlink signal, the first uplink signal is sent to the network side device.
A frequency compensation device, characterized in that the frequency compensation device is used for network side equipment, and includes:

A receiving module, configured to use one or more first transmission receiving points TRP to receive the first uplink signal for frequency compensation sent by the terminal;

A frequency compensation determining module, configured to use the first uplink signal to determine a frequency compensation value corresponding to each of at least one first TRP;

The transmission frequency determining module is configured to determine the respective transmission frequencies of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP.
The frequency compensation device according to claim 25, wherein the frequency compensation determining module is configured to use the first uplink signal to determine the frequency compensation value corresponding to each first TRP.
The frequency compensation device according to claim 25, wherein the frequency compensation determining module comprises:

A frequency offset estimation sub-module, configured to use the first uplink signal to perform frequency offset estimation to obtain a frequency offset estimation result;

The reference point determination sub-module is used to determine the reference point used for frequency compensation;

The frequency compensation value determining sub-module is configured to determine the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point.
The frequency compensation device according to claim 27, wherein the frequency offset estimation sub-module is specifically configured to:

At least one first TRP performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values.
The frequency compensation device according to claim 27, wherein the reference point determination submodule is specifically configured to:

Determine the reference point according to the set rule or the reference point indication information sent by the terminal.
The frequency compensation device according to claim 29, wherein the setting rule comprises any one of the following:

The reference point is the frequency offset estimation value corresponding to the designated first TRP determined by the network side device;

The reference point is the frequency offset estimation value with the largest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the frequency offset estimation value with the smallest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the maximum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the minimum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device.
The frequency compensation device according to claim 29, wherein the reference point indication information includes any one of the following:

The reference point indication information is indication information about the specified first TRP; wherein the frequency offset estimation value corresponding to the specified first TRP is the reference point;

The reference point indication information is indication information about a downlink signal; wherein the frequency offset estimation value corresponding to the first TRP associated with the indication information of the downlink signal is the reference point;

The reference point indication information is indication information about the first uplink signal; wherein, the frequency offset estimated by the network side device using the first uplink signal indicated by the indication information is the reference point.
The frequency compensation device according to claim 27, wherein the reference point determination sub-module comprises:

A first determining unit, configured to determine the reference point according to the frequency offset estimation result by the at least one first TRP; or

The second determining unit is configured to determine the reference point according to the frequency offset estimation result by the central processing unit connected to the first TRP included in the network side device.
The frequency compensation device according to claim 32, wherein the first determining unit is specifically configured to:

The at least one first TRP performs information exchange on the respective frequency offset estimation values, and determines its own corresponding reference point for determining the frequency compensation according to the information exchanged.
The frequency compensation device according to any one of claims 27 to 29, wherein the frequency compensation value determining sub-module comprises:

The third determining unit is specifically configured to determine the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point; or

The fourth determining unit is specifically configured to determine the frequency compensation corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point by the central processing unit connected to the first TRP included in the network side device value.
The frequency compensation device according to claim 34, wherein the third determining unit is specifically configured to:

The at least one first TRP determines its corresponding frequency compensation value according to its corresponding frequency offset estimation value and the reference point.
The frequency compensation device according to claim 27, wherein the frequency compensation value determining sub-module is specifically configured to:

The second TRP determines the frequency compensation value corresponding to itself according to the frequency offset estimation value corresponding to itself, and sends the determined frequency compensation value or the frequency offset estimation value corresponding to the second TRP to the third TRP; The second TRP is used to characterize a part of the TRP in the first TRP, and the third TRP is used to characterize another part of the TRP in the first TRP.
The frequency compensation device according to claim 36, wherein the transmission frequency determination module comprises:

The first frequency determining submodule is configured to determine the transmission frequency used by the second TRP for downlink transmission according to the frequency compensation value determined by the second TRP;

The second frequency determining submodule is configured to determine the transmission frequency used by the third TRP for downlink transmission according to the frequency compensation value determined by the second TRP or the frequency offset estimation value corresponding to the second TRP.
The frequency compensation device according to any one of claims 25 to 29, wherein the frequency compensation determining module comprises:

A first processing sub-module, configured to determine the respective corresponding frequency compensation value by the at least one first TRP using the first uplink signal; or

The second processing sub-module is used for the central processing unit connected to the first TRP included in the network side device to determine the frequency compensation value corresponding to each of the at least one first TRP by using the first uplink signal.
The frequency compensation device according to claim 38, wherein the first processing submodule is specifically configured to:

The at least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values;

The at least one first TRP determines the respective corresponding frequency compensation value according to the respective corresponding frequency offset estimation value.
The frequency compensation device according to claim 39, wherein the first uplink signal includes a second uplink signal for frequency offset estimation corresponding to each first TRP;

The at least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values, including:

The at least one first TRP performs frequency offset estimation on the respective corresponding second uplink signals to obtain respective frequency offset estimation values.
The frequency compensation device according to claim 40, further comprising:

The association relationship sending module is configured to send the association relationship between the at least one first TRP and the second uplink signal to the terminal.
The frequency compensation device according to claim 41, wherein the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The transmission configuration of the second uplink signal indicates the TCI state;

The second uplink signal quasi co-located QCL indication information.
A frequency compensation device, characterized in that the frequency compensation device is used in a terminal, and includes:

A generating module, configured to generate the first uplink signal for frequency compensation according to the configuration or instruction of the network side device;

The sending module is configured to send the first uplink signal to the network side device, so that the network side device uses one or more first transmission reception points TRP to receive the first uplink signal sent by the terminal, and uses the first uplink signal The uplink signal determines the frequency compensation value corresponding to each of the at least one first TRP, and determines the respective transmission frequency of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP.
The frequency compensation device according to claim 43, wherein the first uplink signals used for frequency offset estimation of the at least one first TRP are the same.
The frequency compensation device according to claim 43, wherein the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP.
The frequency compensation device according to claim 45, further comprising:

The association relationship receiving module is configured to receive the association relationship between the at least one first TRP and the second uplink signal.
The frequency compensation device according to claim 46, further comprising: the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The transmission configuration of the second uplink signal indicates the TCI state;

The second uplink signal quasi co-located QCL indication information.
The frequency compensation device according to claim 47, wherein the association relationship indicates a downlink signal associated with the first uplink signal; the frequency compensation device further comprises:

An association relationship receiving module, configured to receive a downlink signal associated with the second uplink signal;

The sending module includes:

The sending submodule is configured to send the first uplink signal to the network side device based on the reception of the downlink signal.
A network side device includes a memory, a processor, and a program stored in the memory and capable of running on the processor, wherein the network side device includes a plurality of remote radio head TRPs, and the processor executes The procedure is as follows:

Using one or more first transmission receiving points TRP to receive the first uplink signal sent by the terminal for frequency compensation;

Determine the frequency compensation value corresponding to each of at least one first TRP by using the first uplink signal;

According to the frequency compensation value corresponding to each of the at least one first TRP, the transmission frequency of each of the at least one first TRP used for downlink transmission is determined.
The network side device according to claim 49, wherein the determining the frequency compensation value corresponding to each of the at least one first TRP by using the first uplink signal comprises:

The frequency compensation value corresponding to each first TRP is determined by using the first uplink signal.
The network side device according to claim 49, wherein the determining the frequency compensation value corresponding to each of the at least one first TRP by using the first uplink signal comprises:

Performing frequency offset estimation using the first uplink signal to obtain a frequency offset estimation result;

Determine the reference point for frequency compensation;

According to the frequency offset estimation result and the reference point, a frequency compensation value corresponding to each of the at least one first TRP is determined.
The network side device according to claim 51, wherein said using the first uplink signal to perform frequency offset estimation to obtain a frequency offset estimation result comprises:

At least one first TRP performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values.
The network side device according to claim 51, wherein said determining a reference point for frequency compensation comprises:

Determine the reference point according to the set rule or the reference point indication information sent by the terminal.
The network side device according to claim 53, wherein the setting rule comprises any one of the following:

The reference point is the frequency offset estimation value corresponding to the designated first TRP determined by the network side device;

The reference point is the frequency offset estimation value with the largest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the frequency offset estimation value with the smallest absolute value among the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the maximum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device;

The reference point is the minimum value among the absolute values of the frequency offset estimation values corresponding to each first TRP determined by the network side device.
The network side device according to claim 53, wherein the reference point indication information includes any one of the following:

The reference point indication information is indication information about the specified first TRP; wherein the frequency offset estimation value corresponding to the specified first TRP is the reference point;

The reference point indication information is indication information about a downlink signal; wherein the frequency offset estimation value corresponding to the first TRP associated with the indication information of the downlink signal is the reference point;

The reference point indication information is indication information about the first uplink signal; wherein, the network side device uses the frequency offset estimation value estimated by the first uplink signal indicated by the indication information as the reference point.
The network side device according to claim 51, wherein said determining a reference point for frequency compensation comprises:

The at least one first TRP determines the reference point according to the frequency offset estimation result; or

The central processing unit connected to the first TRP included in the network side device determines the reference point according to the frequency offset estimation result.
The network side device according to claim 56, wherein the at least one first TRP determining the reference point according to the frequency offset estimation result comprises:

The at least one first TRP performs information exchange on the respective frequency offset estimation values, and determines its own corresponding reference point for determining the frequency compensation according to the information exchanged.
The network side device according to any one of claims 51 to 53, wherein the frequency compensation value corresponding to each of the at least one first TRP is determined according to the frequency offset estimation result and the reference point, include:

The at least one first TRP determines the respective corresponding frequency compensation value according to the frequency offset estimation result and the reference point; or

The central processing unit connected to the first TRP included in the network side device determines the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point.
The network-side device according to claim 58, wherein the at least one first TRP determines the respective corresponding frequency compensation value according to the frequency offset estimation result and the reference point, comprising:

The at least one first TRP determines its corresponding frequency compensation value according to its corresponding frequency offset estimation value and the reference point.
The network-side device according to claim 51, wherein the determining the frequency compensation value corresponding to each of the at least one first TRP according to the frequency offset estimation result and the reference point comprises:

The second TRP determines the frequency compensation value corresponding to itself according to the frequency offset estimation value corresponding to itself, and sends the determined frequency compensation value or the frequency offset estimation value corresponding to the second TRP to the third TRP; The second TRP is used to characterize a part of the TRP in the first TRP, and the third TRP is used to characterize another part of the TRP in the first TRP.
The network-side device according to claim 60, wherein the determining the transmission frequency of each of the at least one first TRP for downlink transmission according to the frequency compensation value corresponding to each of the at least one first TRP comprises :

The second TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by itself;

The third TRP determines its own transmission frequency for downlink transmission according to the frequency compensation value determined by the second TRP or the frequency offset estimation value corresponding to the second TRP.
The network-side device according to any one of claims 49 to 53, wherein the determining the frequency compensation value corresponding to each of at least one first TRP by using the first uplink signal comprises:

The at least one first TRP uses the first uplink signal to determine the respective corresponding frequency compensation value; or

The central processing unit connected to the first TRP included in the network side device uses the first uplink signal to determine the frequency compensation value corresponding to each of the at least one first TRP.
The network-side device according to claim 62, wherein the at least one first TRP uses the first uplink signal to determine the respective corresponding frequency compensation values, comprising:

The at least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values;

The at least one first TRP determines the respective corresponding frequency compensation value according to the respective corresponding frequency offset estimation value.
The network-side device according to claim 63, wherein the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP;

The at least one first TRP respectively performs frequency offset estimation on the first uplink signal to obtain respective frequency offset estimation values, including:

The at least one first TRP performs frequency offset estimation on the respective corresponding second uplink signals to obtain respective frequency offset estimation values.
The network side device according to claim 64, further comprising:

Sending the association relationship between the at least one first TRP and the second uplink signal to the terminal.
The network side device according to claim 65, further comprising: the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The transmission configuration of the second uplink signal indicates the TCI state;

The second uplink signal quasi co-located QCL indication information.
A terminal including a memory, a processor, and a program stored on the memory and capable of running on the processor, wherein the processor implements the following steps when the program is executed by the processor:

Generate the first uplink signal for frequency compensation according to the configuration or instruction of the network side device;

The first uplink signal is sent to the network side device, so that the network side device uses one or more first transmission reception points TRP to receive the first uplink signal sent by the terminal, and uses the first uplink signal to determine at least one The frequency compensation value corresponding to each of the first TRPs is determined according to the frequency compensation value corresponding to each of the at least one first TRP, and the transmission frequency of each of the at least one first TRP used for downlink transmission is determined.
The terminal according to claim 67, wherein the first uplink signals used by the at least one first TRP for frequency offset estimation are the same.
The terminal according to claim 67, wherein the first uplink signal includes a second uplink signal used for frequency offset estimation corresponding to each first TRP.
The terminal according to claim 69, further comprising:

Receiving the association relationship between the at least one first TRP and the second uplink signal.
The terminal according to claim 70, further comprising: the association relationship is indicated by any of the following messages:

Spatial relationship information of the second uplink signal;

The transmission configuration of the second uplink signal indicates the TCI state;

The second uplink signal quasi co-located QCL indication information.
The terminal according to claim 71, wherein the association relationship indicates a downlink signal associated with the first uplink signal; and the frequency compensation method further comprises:

Receiving a downlink signal associated with the second uplink signal;

The sending the first uplink signal to the network side device includes:

Based on the reception of the downlink signal, the first uplink signal is sent to the network side device.
A non-transitory computer-readable storage medium with a computer program stored thereon, wherein the computer program implements the steps of the frequency compensation method according to any one of claims 1 to 18 when the computer program is executed by a processor.
A non-transitory computer-readable storage medium with a computer program stored thereon, wherein the computer program implements the steps of the frequency compensation method according to any one of claims 19 to 24 when the computer program is executed by a processor.