CN114389785B

CN114389785B - Reference signal adjusting method and device, terminal and network side equipment

Info

Publication number: CN114389785B
Application number: CN202011113008.0A
Authority: CN
Inventors: 任千尧; 孙鹏; 宋扬; 塔玛拉卡·拉盖施
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2024-08-06
Anticipated expiration: 2040-10-16
Also published as: CN114389785A; WO2022078452A1

Abstract

The application discloses a reference signal adjusting method and device, a terminal and network side equipment, and belongs to the technical field of communication. Wherein the method comprises the following steps: acquiring first information; performing a first operation according to the first information, wherein the first operation comprises at least one of the following: adjusting the receiving time of the received first reference signal; performing time domain or frequency domain compensation on the calculation result of the first reference signal; it is determined whether to perform timing calibration. The application can solve the problem of reduced throughput of downlink transmission caused by mismatching of the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side in the prior art.

Description

Reference signal adjusting method and device, terminal and network side equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a method and a device for adjusting a reference signal, a terminal and network side equipment.

Background

In the partial reciprocity system, the network performs channel estimation based on the SRS (Sounding REFERENCE SIGNAL, channel Sounding reference signal) sent by the terminal to obtain the impulse response of the uplink channel, so as to obtain the time delay and amplitude of each path of the multipath channel, but there may be an indication of the reference signal by the network and a mismatch of the measurement result of the reference signal by the terminal side, which results in a decrease in the throughput of downlink transmission.

Disclosure of Invention

The embodiment of the application provides a method and a device for adjusting a reference signal, a terminal and network side equipment, which can solve the problem that in the prior art, the throughput of downlink transmission is reduced due to mismatching of the indication of the reference signal by a network and the measurement result of the reference signal by the terminal side.

In a first aspect, a method for adjusting a reference signal is provided, which is executed by a terminal and includes: acquiring first information; performing a first operation according to the first information, wherein the first operation comprises at least one of the following: adjusting the receiving time of the received first reference signal; performing time domain or frequency domain compensation on the calculation result of the first reference signal; it is determined whether to perform timing calibration.

In a second aspect, there is provided an adjustment device for a reference signal, including: the acquisition module is used for acquiring the first information; the execution module is used for executing a first operation according to the first information, wherein the first operation comprises at least one of the following steps: adjusting the receiving time of the received first reference signal; performing time domain or frequency domain compensation on the calculation result of the first reference signal; it is determined whether to perform timing calibration.

In a third aspect, a method for adjusting a reference signal is provided, which is executed by a network side device, and includes: the first information and the reference signal are transmitted to the terminal.

In a fourth aspect, there is provided an adjustment device for a reference signal, including: and the sending module is used for sending the first information and the reference signal to the terminal.

In a fifth aspect, there is provided a terminal comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, the program or instruction when executed by the processor implementing the steps of the method according to the first aspect.

In a sixth aspect, a network side device is provided, the network side device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions implementing the steps of the method according to the first aspect when executed by the processor.

In a seventh aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect, or performs the steps of the method according to the third aspect.

In an eighth aspect, a chip is provided, the chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to run a network side device program or instruction, to implement the method according to the first aspect, or to implement the method according to the third aspect.

In the embodiment of the application, if the indication of the reference signal by the network is not matched with the measurement result of the reference signal by the terminal side, the terminal can adjust the receiving time of the received first reference signal according to the first information or compensate the calculation result of the first reference signal in the time domain or the frequency domain so as to enable the indication of the reference signal by the network to be matched with the measurement result of the reference signal by the terminal side; the reference signal is adjusted either while the timing calibration that has been previously performed is being followed or the current channel state is changed, and the timing calibration needs to be re-performed and then adjusted if the parameters of the previous timing calibration are no longer available. That is, by means of the above-mentioned embodiment of the present application, the reference signal may be adjusted so that the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side are matched, thereby solving the problem in the prior art that the downlink transmission throughput is reduced due to the mismatching of the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side, and achieving the effect of improving the downlink transmission throughput.

Drawings

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a flowchart showing a method for adjusting a reference signal according to an embodiment of the application;

FIG. 3 is a second flowchart of a method for adjusting a reference signal according to an embodiment of the present application;

Fig. 4 is a schematic diagram one of magnitudes of impulse responses of a downlink channel obtained by performing channel estimation by a terminal according to CSI-RS configured by a network in an embodiment of the present application;

Fig. 5 is a schematic diagram two of the amplitude of the impulse response of the downlink channel obtained by the terminal performing channel estimation according to the CSI-RS configured by the network in the embodiment of the present application;

FIG. 6 is a schematic diagram of a reference signal adjusting device according to an embodiment of the application;

FIG. 7 is a second schematic diagram of a reference signal adjusting device according to an embodiment of the application;

Fig. 8 is a schematic structural diagram of a communication device in an embodiment of the present application;

fig. 9 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application;

Fig. 10 is a schematic structural diagram of a network side device for implementing an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate, such that embodiments of the application may be practiced otherwise than as specifically illustrated and described herein, and that the "first" and "second" distinguishing between objects generally being of the same type, and not necessarily limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency-Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but these techniques may also be applied to applications other than NR system applications, such as 6 th Generation (6G) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may also be referred to as a terminal device or a User Equipment (UE), and the terminal 11 may be a terminal-side device such as a Mobile phone, a tablet Computer (Tablet Personal Computer), a Laptop (Laptop Computer) or a Personal digital assistant (Personal DIGITAL ASSISTANT, PDA), a palm Computer, a netbook, an ultra-Mobile Personal Computer (ultra-Mobile Personal Computer, UMPC), a Mobile internet device (Mobile INTERNET DEVICE, MID), a wearable device (Wearable Device) or a vehicle-mounted device (VUE), a pedestrian terminal (PUE), and the wearable device includes: a bracelet, earphone, glasses, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may be a base station or a core network, where the base station may be called a node B, an evolved node B, an access Point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a Basic service set (Basic SERVICE SET, BSS), an Extended service set (Extended SERVICE SET, ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access Point, a WiFi node, a transmission and reception Point (TRANSMITTING RECEIVING Point, TRP), or some other suitable terminology in the field, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that, in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The relevant terms or contexts of the present application will be described below;

1. acquisition of channel state information

From the theory of Information, accurate Channel State Information (CSI) is critical to channel capacity. Especially for multi-antenna systems, the transmitting end can optimize the transmission of the signal according to the CSI so that it more matches the state of the channel. Such as: channel quality indication (Channel Quality Indicator, CQI) may be used to select an appropriate modulation coding scheme (Modulation and Coding Scheme, MCS) for link adaptation; the precoding matrix indicator (Precoding Matrix Indicator, PMI) may be used to implement eigenbeamforming (beamforming) to maximize the strength of the received signal or to suppress interference (e.g., inter-cell interference, inter-user interference, etc.). Thus, CSI acquisition has been a research hotspot since Multi-antenna technology (MIMO) was proposed.

In general, CSI acquisition is largely divided into two ways: one is explicit feedback, such as feedback of CQI, PMI, etc.; the other is implicit feedback, such as exploiting channel reciprocity, etc. For large-scale antenna array systems (massive MIMO), implicit feedback based on channel reciprocity is favored because of the large resource overhead of explicit feedback due to the large number of antennas.

A typical situation of obtaining CSI by using channel reciprocity is that a terminal transmits a Sounding reference signal (Sounding REFERENCE SIGNAL, SRS) to a network, and then the network performs channel estimation according to SRS, thereby obtaining information of an uplink channel. Then, according to the channel reciprocity, the network converts the information of the uplink channel into the information of the downlink channel and determines a precoding matrix for downlink data transmission according to the information.

Among them, channel reciprocity exists in time division duplex (Time Division Duplex, TDD) systems. For example, in the Angle domain, the departure Angle (Angle of Departure, aoD) of the downlink channel is equal to the Arrival Angle (Angle of Arrival, aoA) of the uplink channel; in the time delay domain, the uplink and downlink channels have the same channel impulse response (Channel Impulse Response, CIR).

However, in practical measurements, it is found that in a frequency division duplex (Frequency Division Duplex, FDD) system, there is a certain degree of reciprocity between the uplink and downlink channels: in the angle domain, aoD of the downlink channel is equal to AoA of the uplink channel; in the time delay domain, the uplink and downlink channels have the same power delay spectrum (Power Delay Profile, PDP), i.e. the uplink and downlink channels have the same multipath delay and multipath power. But the phases of the individual paths are different. To distinguish from full channel reciprocity (full reciprocity) in a TDD system, this degree of reciprocity in an FDD system is referred to as partial channel reciprocity (partial reciprocity).

2. Channel reciprocity

In the partial reciprocity system, the network performs channel estimation based on the SRS sent by the terminal to obtain the impulse response of the uplink channel. Thus, the delay and amplitude of each path of the multipath channel are obtained. In order to acquire the phase of each path, there are generally two ways.

Mode 1: the network directly indicates the delay of each path of the terminal. For the terminal, channel estimation is performed based on the CSI-RS (CHANNEL STATE Information REFERENCE SIGNAL ) to obtain an impulse response of the downlink channel, and then each path phase is obtained through IDFT transformation according to the delay of each path configured by the network, and is reported to the network.

Mode 2: the network maps multiple paths onto multiple CSI-RS ports. The frequency selective precoding (Frequency Selective Precoding) is carried out on each CSI-RS port, two basic implementation methods exist for the frequency selective precoding, one is hour delay cyclic delay diversity (SMALL DELAY CYCLIC DELAY DIVERSITY, SD-CDD), and the delay corresponding to the frequency selective precoding is the delay of the corresponding path. After simple operation (such as addition) is performed on the terminal side, an impulse response component (a complex number) of the path corresponding to the CSI-RS port is obtained, and the impulse response component (including phase and amplitude) or the phase thereof is reported to the network. Assuming that one CSI-RS symbol (one QPSK symbol) can be expressed as x _k, k as its corresponding subcarrier mapping position, the symbol after frequency selective precoding can be expressed asWherein,Is an imaginary unit; n is the number of fast fourier transform (Fast Fourier Transform, FFT) points corresponding to the orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols; τ is the delay corresponding to the frequency selective precoding.

The other is that the base station obtains the combined pre-coding according to the space-frequency two-dimensional SVD, maps a plurality of space-frequency base vectors to a plurality of ports, and the first method is different in that the base station obtains impulse response components (complex numbers) of the paths corresponding to the CSI-RS ports after simple operation (such as addition) is carried out on the pre-coding treatment of the base station at the terminal side, and reports the impulse response components (including phase and amplitude) or the phase thereof to the network.

At present, under the condition that only partial reciprocity exists in the uplink and downlink channels, most schemes only utilize the reciprocity of an angle domain when a network side performs precoding design for downlink transmission. Moreover, in a few schemes that exploit the reciprocity of the delay domain, the timing deviation at the terminal side is not considered. The timing deviation mainly comes from two aspects, namely, transmission delay, and the estimation of the timing advance (TIMING ADVANCE) can only ensure that the main path falls in the CP, but cannot ensure that a certain accurate sampling point is aligned, for example: 0 th. Secondly, when the UE receives, the window is usually opened several sampling points in advance, which depends on the specific implementation of the terminal and is not known to the network side.

Therefore, both of the above methods are affected by the timing of the terminal side. For method one, the delay of each path indicated by the network is not the delay of the path (e.g., the maximum strength) desired at the terminal side. Likewise, for method two, the network may also cause the selected path to be other than the path desired by the terminal (e.g., the greatest strength) when performing frequency selective precoding. Obviously, the phase reported by the terminal side is not the phase expected by the network side, so that the impulse response estimation of the network side to the downlink channel is inaccurate, the calculation and the derivation of the downlink precoding matrix are affected, and the throughput of downlink transmission is reduced.

The method for adjusting the reference signal provided by the embodiment of the application is described in detail below through specific embodiments and application scenes thereof with reference to the accompanying drawings.

The embodiment of the application provides a method for adjusting a reference signal, which is executed by a terminal, fig. 2 is a flowchart of a method for adjusting a reference signal according to an embodiment of the application, as shown in fig. 2, and the steps of the method include:

step S202, acquiring first information;

step S204, executing a first operation according to the first information; wherein the first operation comprises at least one of: adjusting the receiving time of the received first reference signal; performing time domain or frequency domain compensation on the calculation result of the first reference signal; it is determined whether to perform timing calibration.

Through step S202 and step S204 in the embodiment of the present application, if the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side are not matched, the terminal may adjust the receiving time of the received first reference signal according to the first information, or perform time domain or frequency domain compensation on the calculation result of the first reference signal, so as to match the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side; the reference signal is adjusted either while the timing calibration that has been previously performed is being followed or the current channel state is changed, and the timing calibration needs to be re-performed and then adjusted if the parameters of the previous timing calibration are no longer available. That is, by means of the above-mentioned embodiment of the present application, the reference signal may be adjusted so that the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side are matched, thereby solving the problem in the prior art that the downlink transmission throughput is reduced due to the mismatching of the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side, and achieving the effect of improving the downlink transmission throughput.

In an optional implementation manner of the embodiment of the present application, the first information in the embodiment of the present application is used to indicate a Quasi Co-located QCL (Quasi Co-Location) relationship, and the performing the timing calibration includes:

Step S11, under the QCL relation, measuring a second reference signal, and selecting a first delay path meeting a preset condition from the measurement result;

Step S12, determining a deviation value between the position of the second delay path and the position of the first delay path; the second delay path meets the preset condition, and the position of the second delay path is configured by a network side or agreed by a protocol.

It can be seen that the purpose of performing timing calibration in the embodiment of the present application is to obtain the offset value, but in some cases, the offset value measured before may be multiplexed, that is, although the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side are not matched, the channel state is always relatively stable, that is, the offset within a period of time is relatively stable, and then the previous offset value may be used at this time; that is, timing calibration need not be performed in this case. Only when the indication of the reference signal by the network is not matched with the measurement result of the reference signal by the terminal side and the channel state is always the condition of comparison fluctuation, the measurement needs to be carried out to obtain a deviation value at the moment, so that the reference signal is adjusted by using the deviation value obtained by re-measurement.

In the embodiment of the application, the operation of calculating the deviation value is periodically executed or triggered and executed by network side equipment. Wherein the period is determined by at least one of: the measurement period of the second reference signal is multiplexed, as agreed by the protocol, as instructed by the network side device.

In other alternative implementations of embodiments of the application, the operation of calculating the offset value may also be non-periodic. If periodic, the period may be an independent period, specified by a protocol or indicated by the network side; alternatively, the period may be multiplexed with a period of a previously measured reference signal, e.g., measured using a TRS as the QCL resource, and timing offset measurements are made each time the TRS measurement is made when the enhancement of the target protocol is configured. If aperiodic, the triggering can be triggered by signaling such as DCI (Downlink Control Information ) or MAC CE (MAC Control Element, MAC control unit) or RRC (Radio Resource Control ).

In an alternative implementation manner of the embodiment of the present application, the first delay path or the second delay path that satisfies the preset condition includes at least one of the following: the time delay path with the maximum time domain amplitude, the time delay path with the maximum time domain amplitude acceleration, the time delay path agreed by a protocol and the time delay path indicated by network side equipment.

The delay path with the largest time domain amplitude or the delay path with the largest time domain amplitude acceleration is commonly known as the delay path with the largest time domain amplitude or the delay path with the largest time domain amplitude acceleration in the measurement result after the reference signal is measured. The delay paths agreed by the protocol and indicated by the network side equipment can be the delay path with the largest time domain amplitude or the delay path with the largest time domain amplitude acceleration, or can be other specific delay paths.

It should be noted that, in the embodiment of the present application, the first reference signal may be a CSI-RS, and the second reference signal may be a CSI-RS or a TRS (TRACKING REFERENCE SIGNAL )). Of course, the foregoing is merely an example of the first reference signal and the second reference signal in the present application, and the first reference signal and the second reference signal may also be other reference signals, for example, DMRS (Demodulation reference signal) REFERENCE SIGNAL.

In addition, the reference signals (the first reference signal and the second reference signal) in the embodiment of the application can be precoded or not precoded; the precoding mode comprises the following steps: spatial precoding and/or frequency selective precoding. However, in the embodiment of the application, if the reference signal is the CSI-RS, the CSI-RS used for normal CSI measurement can be multiplexed, so that the utilization of resources can be saved.

In the case where the first reference signal is CSI-RS and the second reference signal is TRS, the QCL relationship between the two may be achieved by: a certain TRS is configured in advance as a QCL resource of the CSI-RS by network side equipment, and when the CSI enhancement in a target protocol is configured, the terminal adjusts the receiving of the CSI-RS according to the measurement result of the TRS; it may also be that the network side device directly indicates a TRS as the QCL resource for timing measurement of CSI-RS. In an optional implementation manner of the embodiment of the present application, the network side device may indicate that one TRS corresponds to one or more CSI-RS ports, or the network side device may indicate one TRS resource or one or more ports therein.

In the case where the first reference signal is CSI-RS and the second reference signal is CSI-RS, the QCL relationship between the two may be achieved by: multiplexing the CSI-RS to indicate a QCL relationship; the network side equipment indicates one or more CSI-RS resources or one or more ports therein, and the terminal performs timing measurement outside normal CSI measurement according to the indicated content.

It should be noted that, the QCL relationship involved in the embodiment of the present application is determined by at least one of the following ways: protocol conventions, network side device indications.

In an optional implementation manner in the embodiment of the present application, for the manner of adjusting the receiving time of the reference signal in step S204, the method may further include:

s21, determining a windowing position according to the deviation value;

step S22, measuring the first reference signal at the windowed position.

The window opening position determined according to the deviation refers to a window opening position which needs to be advanced or delayed when the first reference signal received next time is measured in an actual application scene, if the position of the first delay path is advanced compared with the position of the second delay path, the position corresponding to the deviation value is delayed, the first reference signal is measured, and if the position of the first delay path is delayed compared with the position of the second delay path, the position corresponding to the deviation value is advanced, and the first reference signal is measured.

In another optional implementation manner of the embodiment of the present application, the method for performing time domain or frequency domain compensation on the calculation result of the first reference signal in step S204 may further include:

Step S31, calculating a frequency domain compensation coefficient of the first reference signal according to the deviation value; performing phase compensation on the channel estimation result of the received first reference signal according to the compensation coefficient, or performing phase compensation on the calculation result of channel quality calculation after performing channel estimation on the received first reference signal according to the compensation coefficient;

Step S32, time delay compensation is carried out on the time delay information of the received first reference signal according to the deviation value.

For the steps S31 and S32, in a specific application scenario, calculating an SD-CDD matrix according to the offset value and the number N of subcarriers occupied by the first reference signal, where the delay is the offset value; assuming that one CSI-RS symbol (one QPSK symbol) can be expressed as x _k, k is its corresponding subcarrier mapping position, its corresponding frequency domain compensation coefficient isWherein,In imaginary units. If the result of the channel estimation is compensated, thenIf the channel quality calculation result is compensated, the precoding coefficient v _k is calculated according to x _k and then multiplied by the compensation coefficient

In an alternative implementation manner of the embodiment of the present application, after performing the timing calibration, the method steps of the embodiment of the present application may further include:

In step S206, the number of CSI processing units (CSI Processing Unit, CPU) or the working time of the CSI processing units required for timing calibration is reported to the network device.

The terminal reports the CPU information of the offset calculation, and because the offset calculation may be performed simultaneously with normal CSI calculation or other behaviors of the reference signal, whether a new CPU is occupied or the same CPU is performed in series needs to be considered, and the number of the CPUs required by the terminal to report to the network side device or the time that the CPUs need to work continuously is needed to assist the base station in performing other operations.

The present application is explained from the terminal side, and the present application will be explained with reference to the network side;

the embodiment of the application provides a method for adjusting a reference signal, which is executed by network side equipment, and fig. 3 is a flowchart of a second method for adjusting the reference signal in the embodiment of the application, as shown in fig. 3, and the steps of the method include:

step S302, the first information and the reference signal are sent to the terminal.

Optionally, the method may further include step S304 of determining first information, where the first information is used to indicate a quasi co-located QCL relationship, the first reference signal and the second reference signal satisfy the QCL relationship, measuring the second reference signal under the QCL relationship, and selecting a first delay path from measurement results, where the first delay path satisfies a preset condition;

based on this, the reference signal in the embodiment of the present application includes at least one of the following: a first reference signal, a second reference signal; wherein the resources or ports of the second reference signal and the first reference signal satisfy the QCL relationship.

In the embodiment of the present application, the second reference signal may be configured by a network side device, and the number of the second reference signal is one or more; one second reference signal corresponds to one or more first reference signals.

In the embodiment of the present application, the first reference signal may be a CSI-RS, and the second reference signal may be a CSI-RS or a TRS (TRACKING REFERENCE SIGNAL ). Of course, the foregoing is merely an example of the first reference signal and the second reference signal in the present application, and the first reference signal and the second reference signal may also be other reference signals, for example, DMRS (Demodulation reference signal) REFERENCE SIGNAL.

The method steps in the embodiment of the application can further comprise:

Step S306, the CPU number or the working time length of the CPU reported by the terminal is received, wherein the CPU number or the working time length of the CPU is required by timing calibration.

That is, the first information and the reference signal sent by the network side device to the terminal are needed by the terminal when the timing calibration is needed or the reference signal needs to be adjusted.

The application is illustrated below in connection with alternative implementations in examples of the application;

Alternative embodiment 1:

In this alternative implementation manner, fig. 4 is a schematic diagram of the amplitude of the impulse response of the downlink channel obtained by performing channel estimation according to CSI-RS configured by the network by the terminal in the embodiment of the present application, and in combination with fig. 4, the method steps for adjusting the reference signal in the embodiment of the present application include:

Step S401, network side equipment configures UE to measure on port0, indicates the position of the strongest path of the UE as tau ₁, and sends CSI-RS; the CSI-RS may or may not be space-domain precoded.

Optionally, the CSI-RS is frequency-selectively precoded, and the time delay corresponding to the frequency-selective precoding is the time delay of the strongest path of the impulse response of the uplink channel; the uplink channel impulse response is obtained by the network according to SRS measurement sent by the terminal; the SRS transmitted by the terminal may be space-domain precoded, or may not be space-domain precoded.

In step S402, the terminal performs channel estimation at port0, thereby obtaining the impulse response of the downlink channel.

In step S403, the terminal finds out that the delay of the path with the maximum intensity in the downlink impulse response is τ ₂, and calculates the deviation value 2 of the sum delay τ ₁.

In step S404, when the UE receives the CSI-RS next time, the UE windows in advance the corresponding offset values (τ ₁-τ₂) of sampling points, so as to ensure that the strongest path falls at the position of the delay τ ₁.

Alternative embodiment 2:

In this alternative implementation manner, fig. 5 is a schematic diagram two of magnitudes of impulse responses of a downlink channel obtained by performing channel estimation by a terminal according to CSI-RS configured by a network in an embodiment of the present application, and in combination with fig. 5, the method steps for adjusting a reference signal in the embodiment of the present application include:

Step S501, the network configures UE to measure on port0, indicates that the position of the strongest path of the UE is τ ₀, and transmits CSI-RS, wherein the CSI-RS is precoded by a spatial domain;

step S502, the network side indicates that the delay position required to be reported by the UE is tau ₀,τ₁,τ₂;

step S503, the terminal carries out channel estimation at port0, thereby obtaining impulse response of downlink channel;

step S504, the terminal searches the time delay tau of the path with the maximum intensity in the downlink impulse response;

in step S505, the UE calculates the amplitudes and phases corresponding to the three paths with the time delay of τ and τ - τ ₀+τ₁,τ-τ₀+τ₂, and reports the quantized amplitudes and phases to the network.

Alternative embodiment 3:

in this alternative implementation manner, the method steps for adjusting the reference signal in the embodiment of the present application include:

Firstly, the network configures UE to measure on port0, indicates the position of the strongest path of the UE as tau ₀, and transmits CSI-RS, wherein the CSI-RS is subjected to space-frequency joint precoding, and three space-frequency orthogonal bases are mapped on each port.

Step S601, the network side indicates that the delay position required to be reported by the UE is tau ₀,τ₁,τ₂;

Step S602, the terminal carries out channel estimation at port0, thereby obtaining the impulse response of the downlink channel;

step S603, the terminal searches the time delay tau of the path with the maximum intensity in the downlink impulse response near tau ₀;

step S604, the UE calculates a frequency domain selection precoding matrix corresponding to the delay deviation tau-tau ₀;

Wherein, assuming that one CSI-RS symbol (one QPSK symbol) can be expressed as x _k, k is its corresponding subcarrier mapping position, the symbol after bias-compensated frequency-selective precoding can be expressed as Wherein,Is an imaginary unit; n is the number of DFT points (e.g., the number of CSI-RSs).

In step S605, the UE calculates the PMI and reports the result of the offset-compensated frequency selective precoding for each CSI-RS estimation result at each port as a final result.

Alternative embodiment 4:

In this optional embodiment, the network side device selects the port with the highest intensity or the space-frequency orthogonal base to instruct the terminal to perform timing calibration, and when the network side device finds that the channel quality changes and needs to change the measurement port and/or the strongest path position, the network side device instructs the terminal to change the measurement port through signaling such as MACCE, RRC, DCI, etc.

The network side equipment estimates an uplink channel according to the SRS, and calculates precoding of the CSI-RS; the precoding may be spatial precoding or space-frequency precoding, and the network side selects the strongest port from all ports to indicate to the terminal. For example, the network side device calculates the intensity of the coded frequency domain result corresponding to each CSI-RS port or each space-frequency precoding orthogonal base according to the received uplink channel, and selects the port with the largest intensity or the space-frequency orthogonal base to indicate to the terminal, where the intensity may be calculated according to the second moment or calculated according to the first moment.

For example, let the precoding of each CSI-RS of a certain port p on the network side be w _k,l,p, where k represents a subcarrier or PRB, l represents a port, and the channel coefficient of the downlink channel obtained by the network side according to the previous CSI report result or the downlink channel estimated according to SRS at each CSI-RS is h _k,l, then the second moment of this port p is expressed asThe intensity of this port p can also be expressed as a first moment

When the channel quality changes and the position of the port with the highest intensity is not changed any more as the previous port or the position of the strongest path changes, the network side calculates a new port or a space-frequency orthogonal base and/or the position of the strongest path, and indicates the terminal through signaling such as MACCE, RRC, DCI and the like.

When the terminal arrives at the period of timing measurement, recalculating the deviation value according to the new port and/or the strongest path position indicated by the network side equipment; or the network side equipment triggers the terminal to recalculate the deviation value according to the latest indicated port and/or the strongest path position through signaling such as DCI/MACCE/RRC.

Alternative embodiment 5:

In this alternative embodiment, the network side device configures a TRS as a QCL resource for CSI-RS in advance; under normal conditions, the terminal carries out timing according to the TRS, when relevant enhancement information in the target protocol is configured, the terminal calculates timing deviation when the TRS is timed, or carries out measurement according to triggering of network side equipment, and further adjusts and estimates the windowing time of the CSI-RS according to a measurement result.

The network side device may instruct, for each CSI-RS port, a TRS as a QCL resource, where the QCL resources may be partially identical, and the UE measures timing offset at a specified resource position, and adjusts a windowing position when receiving at different CSI-RS ports, or performs phase compensation on a received result.

Through the above optional embodiments 1 to 5, the network side device may instruct the terminal to perform timing calibration on the resources (ports or a part of ports), where the terminal performs timing calibration periodically or non-periodically (triggered by the network side), so that the terminal adjusts CSI reporting delay indicated by the network according to the result of timing calibration, and the terminal reports the number of CPUs or the duration required for timing calibration to the network. The terminal performs timing calibration through the information indicated by the network side equipment, so that performance loss caused by timing deviation can be restrained, CSI measurement accuracy is improved, and meanwhile, the terminal reports time required by timing deviation detection, so that the network side equipment can be helped to schedule.

It should be noted that, in the reference signal adjustment method provided in the embodiment of the present application, the execution body may be a reference signal adjustment device, or a control module in the reference signal adjustment device for executing the reference signal adjustment method. In the embodiment of the present application, the reference signal adjusting device executes the reference signal adjusting method as an example, and the reference signal adjusting device provided in the embodiment of the present application is described.

An embodiment of the present application provides a reference signal adjusting device, and fig. 6 is a schematic structural diagram of the reference signal adjusting device in the embodiment of the present application, as shown in fig. 6, where the device includes:

An acquisition module 62, configured to acquire first information;

An execution module 64 for executing a first operation according to the first information;

Wherein the first operation comprises at least one of: adjusting the receiving time of the received first reference signal; performing time domain or frequency domain compensation on the calculation result of the first reference signal; it is determined whether to perform timing calibration.

By the device of the embodiment of the application, if the condition that the indication of the reference signal by the network is not matched with the measurement result of the reference signal by the terminal side occurs, the terminal can adjust the receiving time of the received first reference signal according to the first information or compensate the calculation result of the first reference signal in the time domain or the frequency domain so as to enable the indication of the reference signal by the network to be matched with the measurement result of the reference signal by the terminal side; the reference signal is adjusted either while the timing calibration that has been previously performed is being followed or the current channel state is changed, and the timing calibration needs to be re-performed and then adjusted if the parameters of the previous timing calibration are no longer available. That is, by means of the above-mentioned embodiment of the present application, the reference signal may be adjusted so that the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side are matched, thereby solving the problem in the prior art that the downlink transmission throughput is reduced due to the mismatching of the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side, and achieving the effect of improving the downlink transmission throughput.

Optionally, the first information in the embodiment of the present application is used to indicate a quasi co-located QCL relationship, where the first reference signal and the second reference signal satisfy the QCL relationship, and where the first operation is to perform timing calibration, the performing module 64 may further include:

the processing unit is used for measuring the second reference signal under the QCL relationship and selecting a first delay path meeting the preset condition from the measurement result;

A first determining unit, configured to determine a deviation value between the position of the second delay path and the position of the first delay path; the second delay path meets the preset condition, and the position of the second delay path is configured by a network side or agreed by a protocol.

Optionally, in the case where the first operation is to adjust the receiving time of the reference signal, the executing module 64 in the embodiment of the present application may further include: the second determining unit is used for determining a windowing position according to the deviation value; and the measuring unit is used for measuring the first reference signal at the windowing position.

Optionally, in the case that the first operation is to compensate the calculation result of the first reference signal in the time domain or the frequency domain, the execution module 64 in the embodiment of the present application may further include: the first compensation unit is used for calculating a frequency domain compensation coefficient of the first reference signal according to the deviation value; performing phase compensation on the channel estimation result of the received first reference signal according to the compensation coefficient, or performing phase compensation on the calculation result of channel quality calculation after performing channel estimation on the received first reference signal according to the compensation coefficient; and the second compensation unit is used for performing time delay compensation on the time delay information of the received first reference signal according to the deviation value.

Optionally, the QCL relationship is determined by at least one of: protocol conventions, network side device indications.

Optionally, after performing the timing calibration, the apparatus in the embodiment of the present application may further include: and the reporting module is used for reporting the quantity of the CSI processing units or the working time of the CSI processing units required by timing calibration to the network side equipment.

It should be noted that, in the embodiment of the present application, the operation of calculating the deviation value is performed periodically or triggered by the network side device. Wherein the period is determined by at least one of: the measurement period of the second reference signal is multiplexed, as agreed by the protocol, as instructed by the network side device.

It should be noted that, the first delay path or the second delay path that satisfies the preset condition includes at least one of the following: the time delay path with the maximum time domain amplitude, the time delay path with the maximum time domain amplitude acceleration, the time delay path agreed by a protocol and the time delay path indicated by network side equipment.

The present application is explained from the terminal side above, and the present application will be explained from the network side below.

An embodiment of the present application provides a reference signal adjusting device, and fig. 7 is a schematic structural diagram of a reference signal adjusting device according to an embodiment of the present application, as shown in fig. 7, where the reference signal adjusting device includes: a transmitting module 72, configured to transmit the first information and the reference signal to the terminal.

Optionally, the apparatus of the embodiment of the present application may further include: a determining module, configured to determine first information; the first information is used for indicating a quasi co-located QCL relationship, and the first reference signal and the second reference signal meet the QCL relationship; the reference signal includes at least one of: a first reference signal and a second reference signal.

Optionally, in the embodiment of the present application, the second reference signal is configured by a network side device, and the number of the second reference signals is one or more; one second reference signal corresponds to one or more first reference signals.

Optionally, the first reference signal in the embodiment of the present application is a channel state information reference signal CSI-RS; the second reference signal is a tracking reference signal TRS or CSI-RS.

Optionally, resources or ports of the second reference signal and the first reference signal in the embodiment of the present application satisfy the QCL relationship.

In an optional implementation manner of the embodiment of the present application, the apparatus in the embodiment of the present application may further include: the receiving module is used for receiving the CPU number or the working time length of the CPU reported by the terminal, wherein the CPU number or the working time length of the CPU is required by timing calibration.

The reference signal adjusting device in the embodiment of the application can be a device, and can also be a component, an integrated circuit or a chip in the terminal. The device may be a mobile terminal or a non-mobile terminal. By way of example, mobile terminals may include, but are not limited to, the types of terminals 11 listed above, and non-mobile terminals may be servers, network attached storage (Network Attached Storage, NAS), personal computers (personal computer, PCs), televisions (TVs), teller machines, self-service machines, etc., and embodiments of the present application are not limited in particular.

The reference signal adjusting device in the embodiment of the application may be a device with an operating system. The operating system may be an Android operating system, an ios operating system, or other possible operating systems, and the embodiment of the present application is not limited specifically.

The reference signal adjusting device provided by the embodiment of the application can realize each process realized by the method embodiments of fig. 2 and 3 and achieve the same technical effects, and in order to avoid repetition, the description is omitted here.

Optionally, as shown in fig. 8, an embodiment of the present application further provides a communication device 800, including a processor 801, a memory 802, and a program or an instruction stored in the memory 802 and capable of running on the processor 801, where, for example, the communication device 800 is a terminal, the program or the instruction is executed by the processor 801 to implement each process of the above-mentioned reference signal adjustment method embodiment, and the same technical effects can be achieved. When the communication device 800 is a network side device, the program or the instruction, when executed by the processor 801, implements the respective processes of the above-mentioned reference signal adjustment method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Fig. 9 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 900 includes, but is not limited to: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

Those skilled in the art will appreciate that the terminal 900 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 910 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 9 does not constitute a limitation of the terminal, and the terminal may include more or less components than those in fig. 9, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 904 may include a graphics processor (Graphics Processing Unit, GPU) 9041 and a microphone 9042, with the graphics processor 9041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 907 includes a touch panel 9071 and other input devices 9072. Touch panel 9071, also referred to as a touch screen. The touch panel 9071 may include two parts, a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 901 processes the downlink data with the processor 910; in addition, the uplink data is sent to the network side equipment. Typically, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 909 may be used to store software programs or instructions as well as various data. The memory 909 may mainly include a storage program or instruction area that may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and a storage data area. In addition, the Memory 909 may include a high-speed random access Memory, and may also include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable ROM (EPROM), an Electrically Erasable Programmable EPROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device.

Processor 910 may include one or more processing units; alternatively, the processor 910 may integrate an application processor that primarily processes operating systems, user interfaces, and applications or instructions, etc., with a modem processor that primarily processes wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 910.

The radio frequency unit 901 is configured to obtain first information;

A processor 910 configured to perform a first operation according to first information, where the first operation includes at least one of:

Adjusting the receiving time of the received first reference signal;

Performing time domain or frequency domain compensation on the calculation result of the first reference signal;

it is determined whether to perform timing calibration.

According to the application, if the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side are not matched, the terminal can adjust the receiving time of the received first reference signal according to the first information or compensate the calculation result of the first reference signal in the time domain or the frequency domain so as to enable the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side to be matched; the reference signal is adjusted either while the timing calibration that has been previously performed is being followed or the current channel state is changed, and the timing calibration needs to be re-performed and then adjusted if the parameters of the previous timing calibration are no longer available. That is, by means of the above-mentioned embodiment of the present application, the reference signal may be adjusted so that the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side are matched, thereby solving the problem in the prior art that the downlink transmission throughput is reduced due to the mismatching of the indication of the reference signal by the network and the measurement result of the reference signal by the terminal side, and achieving the effect of improving the downlink transmission throughput.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 10, the network device 1000 includes: antenna 101, radio frequency device 102, and baseband device 103. Antenna 101 is coupled to radio frequency device 102. In the uplink direction, the radio frequency device 102 receives information via the antenna 101, and transmits the received information to the baseband device 103 for processing. In the downlink direction, the baseband device 103 processes information to be transmitted, and transmits the processed information to the radio frequency device 102, and the radio frequency device 102 processes the received information and transmits the processed information through the antenna 101.

The above-described band processing apparatus may be located in the baseband apparatus 103, and the method performed by the network-side device in the above embodiment may be implemented in the baseband apparatus 103, where the baseband apparatus 103 includes the processor 104 and the memory 105.

The baseband apparatus 103 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 10, where one chip, for example, a processor 104, is connected to the memory 105, so as to call a program in the memory 105, and perform the network device operation shown in the above method embodiment.

The baseband device 103 may further include a network interface 106 for interacting with the rf device 102, such as a common public radio interface (common public radio interface, CPRI for short).

Specifically, the network side device of the embodiment of the present invention further includes: instructions or programs stored in the memory 105 and capable of running on the processor 104, the processor 104 invokes the instructions or programs in the memory 105 to execute the method executed by each module shown in fig. 10, and achieve the same technical effects, so repetition is avoided and will not be described herein.

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above-mentioned reference signal adjustment method embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium such as a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk or an optical disk, and the like.

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a network side equipment program or instruction, each process of the above reference signal adjustment embodiment is realized, the same technical effect can be achieved, and the repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method for adjusting a reference signal, performed by a terminal, comprising:

Acquiring first information;

performing a first operation according to the first information, wherein the first operation comprises:

determining whether to perform timing calibration;

The first information is used for indicating a quasi co-located QCL relationship, the QCL relationship is satisfied by a first reference signal and a second reference signal, and the performing timing calibration includes:

Under the QCL relation, measuring the second reference signal, and selecting a first delay path meeting a preset condition from measurement results;

determining a deviation value between the position of the second delay path and the position of the first delay path;

The second delay path meets the preset condition, and the position of the second delay path is configured by a network side or agreed by a protocol.

2. The method of claim 1, wherein the first operation further comprises adjusting a time of receipt of a first reference signal, the adjusting the time of receipt of the first reference signal comprising:

determining a windowing position according to the deviation value;

and measuring the first reference signal at the windowing position.

3. The method of claim 1, wherein the first operation further comprises time-domain or frequency-domain compensating the calculation of the first reference signal, the time-domain or frequency-domain compensating the calculation of the first reference signal comprising:

Calculating a frequency domain compensation coefficient of the first reference signal according to the deviation value; performing phase compensation on a channel estimation result of the received first reference signal according to the compensation coefficient, or performing phase compensation on a calculation result of channel quality calculation after performing channel estimation on the received first reference signal according to the compensation coefficient;

And performing delay compensation on delay information of the received first reference signal according to the deviation value.

4. The method of claim 1, wherein the QCL relationship is determined by at least one of: protocol conventions, network side device indications.

5. The method according to any one of claims 1 to 4, wherein after performing timing calibration, the method further comprises:

Reporting the quantity of Channel State Information (CSI) processing units or the working time length of the CSI processing units required by timing calibration to network side equipment.

6. The method of claim 1, wherein the operation of calculating the offset value is performed periodically or triggered by a network side device.

7. The method of claim 6, wherein the step of providing the first layer comprises,

The period is determined by at least one of: and multiplexing the measurement period of the second reference signal, which is agreed by a protocol and indicated by the network side equipment.

8. The method of claim 1, wherein the first delay path or the second delay path meeting a predetermined condition comprises at least one of:

the time delay path with the maximum time domain amplitude, the time delay path with the maximum time domain amplitude acceleration, the time delay path agreed by a protocol and the time delay path indicated by network side equipment.

9. A method for adjusting a reference signal, performed by a network device, comprising:

transmitting first information and a reference signal to a terminal;

The first information is used for indicating a quasi co-located QCL (QCL) relationship, and the first reference signal and the second reference signal meet the QCL relationship;

The reference signal includes at least one of: the first reference signal and the second reference signal;

the first information and the reference signal are used for the terminal to execute the following steps:

10. The method of claim 9, wherein the second reference signal is configured by the network side device and is one or more in number; one of the second reference signals corresponds to one or more of the first reference signals.

11. The method of claim 9, wherein the first reference signal is a channel state information reference signal, CSI-RS; the second reference signal is a tracking reference signal TRS or CSI-RS.

12. The method of claim 9, wherein resources or ports of the second reference signal and the first reference signal satisfy the QCL relationship.

13. The method according to claim 9, wherein the method further comprises:

And receiving the quantity of the CSI processing units or the working time length of the CSI processing units reported by the terminal, wherein the quantity of the CSI processing units or the working time length of the CSI processing units are required by timing calibration.

14. An apparatus for adjusting a reference signal, comprising:

The acquisition module is used for acquiring the first information;

the execution module is used for executing a first operation according to the first information, wherein the first operation comprises the following steps:

determining whether to perform timing calibration;

the first information is used for indicating a quasi co-located QCL relationship, the first reference signal and the second reference signal satisfy the QCL relationship, and in the case that the first operation is to perform timing calibration, the execution module includes:

The processing unit is used for measuring the second reference signal under the QCL relationship and selecting a first delay path meeting a preset condition from measurement results;

A first determining unit, configured to determine a deviation value between a position of a second delay path and a position of the first delay path;

15. The apparatus of claim 14, wherein the execution module comprises, in the case where the first operation further comprises adjusting a time of receipt of the first reference signal:

the second determining unit is used for determining a windowing position according to the deviation value;

And the measuring unit is used for measuring the first reference signal at the windowing position.

16. The apparatus of claim 14, wherein, in the case where the first operation further includes time-domain or frequency-domain compensation of the calculation result of the first reference signal, the execution module includes:

A first compensation unit, configured to calculate a frequency domain compensation coefficient of the first reference signal according to the deviation value; performing phase compensation on a channel estimation result of the received first reference signal according to the compensation coefficient, or performing phase compensation on a calculation result of channel quality calculation after performing channel estimation on the received first reference signal according to the compensation coefficient;

And the second compensation unit is used for performing time delay compensation on the time delay information of the received first reference signal according to the deviation value.

17. The apparatus of claim 14, wherein the QCL relationship is determined by at least one of: protocol conventions, network side device indications.

18. The apparatus according to any one of claims 14 to 17, wherein after performing timing calibration, the apparatus further comprises:

and the reporting module is used for reporting the quantity of the CSI processing units or the working time length of the CSI processing units required by timing calibration to the network side equipment.

19. The apparatus of claim 14, wherein the operation of calculating the offset value is performed periodically or triggered by a network-side device.

20. The apparatus of claim 19, wherein the device comprises a plurality of sensors,

21. The apparatus of claim 14, wherein the first delay path or the second delay path meeting a predetermined condition comprises at least one of:

22. An apparatus for adjusting a reference signal, comprising:

The sending module is used for sending the first information and the reference signal to the terminal;

23. The apparatus of claim 22, wherein the second reference signal is configured by a network side device and is one or more in number; one of the second reference signals corresponds to one or more of the first reference signals.

24. The apparatus of claim 22, wherein the first reference signal is a channel state information reference signal, CSI-RS; the second reference signal is a tracking reference signal TRS or CSI-RS.

25. The apparatus of claim 22, wherein resources or ports of the second reference signal and the first reference signal satisfy the QCL relationship.

26. The apparatus of claim 22, wherein the apparatus further comprises:

The receiving module is used for receiving the quantity of the CSI processing units or the working time length of the CSI processing units reported by the terminal, wherein the quantity of the CSI processing units or the working time length of the CSI processing units are required by timing calibration.

27. A terminal comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of adjusting a reference signal according to any one of claims 1 to 8.

28. A network side device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the method of adjusting a reference signal according to any one of claims 9 to 13.

29. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions, which when executed by a processor, implement the method of adjusting a reference signal according to any of claims 1 to 8 or the steps of the method of adjusting a reference signal according to any of claims 9 to 13.