CN109120566B - Configuration and detection method of composite tracking reference signal, base station and terminal - Google Patents

Abstract

The invention provides a configuration and detection method of a composite tracking reference signal, a base station and a terminal, wherein the configuration method of the composite tracking reference signal is applied to the base station and comprises the following steps: generating configuration information of a target tracking reference signal; according to the configuration information, adding a target tracking reference signal on resource particles at different subcarrier positions of a preset Orthogonal Frequency Division Multiplexing (OFDM) symbol position of the target reference signal or on resource particles at different OFDM symbol positions of the same subcarrier position to generate a composite tracking reference signal; sending the composite tracking reference signal to a terminal; wherein, presetting the OFDM symbol position comprises: the position of the OFDM symbol where the target reference signal is located or the position of the OFDM symbol adjacent to the OFDM symbol where the target reference signal is located. By the scheme, the resource overhead caused by the newly added tracking reference signal is reduced, and the newly set composite tracking reference signal is ensured to meet the tracking requirement, so that the reliability and effectiveness of 5G communication are ensured.

Description

A configuration, detection method, base station and terminal of a composite tracking reference signal

technical field

The present invention relates to the field of communication technologies, and in particular, to a configuration and detection method of a composite tracking reference signal, a base station and a terminal.

Background technique

In the future-oriented fifth-generation (5Generation, 5G) mobile communication system, in order to achieve the target of the downlink transmission rate of 20Gbps and the uplink transmission rate of 10Gbps, the operating frequency of the communication link is further increased, such as centimeter wave and millimeter wave, etc. .

On the one hand, the high frequency band has more abundant spectrum resources, which can provide a wider bandwidth to achieve a higher transmission rate. However, on the one hand, high-frequency transmission also has its own unique problems: more serious phase noise, larger Doppler spread, larger frequency offset, etc., and it also puts forward higher requirements for communication equipment components. .

After synchronization is achieved according to the primary synchronization signal (Primary Synchronization Signal, PSS) and the secondary synchronization signal (Secondary Synchronization Signal, SSS), the user equipment needs to perform time/frequency tracking (Time/Frequency Tracking) on the channel. The reference signal used for time-frequency tracking is called Tracking Reference Signal (TRS). For the design of TRS, the 3GPP RAN1 working group has conducted intensive discussions.

The function of TRS can be divided into two independent aspects:

Time domain tracking and delay spread estimation: The tracking range depends on the frequency domain density of the TRS, and the tracking accuracy depends on the frequency domain bandwidth of the TRS.

Frequency Domain Tracking and Doppler Spread Estimation: The tracking range depends on the time-domain density of the TRS, and the tracking accuracy is the time-domain period of the TRS.

However, the existing TRS design methods cannot meet the time-frequency tracking performance requirements and cannot guarantee communication reliability.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a composite tracking reference signal configuration, detection method, base station and terminal to solve the problem that the existing TRS cannot meet the time-frequency tracking performance requirements and cannot guarantee communication reliability.

In order to solve the above technical problem, an embodiment of the present invention provides a method for configuring a composite tracking reference signal, which is applied to a base station, including:

generating the configuration information of the target tracking reference signal;

According to the configuration information, the target tracking reference signal is added to the resource elements at the preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on the resource elements at the same sub-carrier position and different OFDM symbol positions to generate a target tracking reference signal. composite tracking reference signal;

sending the composite tracking reference signal to the terminal;

The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

An embodiment of the present invention further provides a method for detecting a composite tracking reference signal, which is applied to a terminal, including:

Obtain the configuration information of the target tracking reference signal;

According to the configuration information, detect the composite tracking reference signal sent by the base station;

Wherein, for the composite tracking reference signal, the base station adds target tracking on resource elements in preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on resource elements at the same sub-carrier position and different OFDM symbol positions. The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

An embodiment of the present invention further provides a base station, including:

a first generating module, configured to generate configuration information of the target tracking reference signal;

The second generation module is configured to, according to the configuration information, on the preset OFDM symbol position of the target reference signal on the resource elements at different sub-carrier positions or on the resource elements at the same sub-carrier position and different OFDM symbol positions Add target tracking reference signal to generate composite tracking reference signal;

a first sending module, configured to send the composite tracking reference signal to a terminal;

The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

An embodiment of the present invention further provides a base station, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, where the computer program is executed by the processor to implement the above-mentioned composite tracking reference signal the steps of the configuration method.

An embodiment of the present invention further provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned method for configuring a composite tracking reference signal are implemented. .

An embodiment of the present invention also provides a terminal, including:

an acquisition module for acquiring the configuration information of the target tracking reference signal;

a detection module, configured to detect the composite tracking reference signal sent by the base station according to the configuration information;

Wherein, for the composite tracking reference signal, the base station adds target tracking on resource elements in preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on resource elements at the same sub-carrier position and different OFDM symbol positions. The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

An embodiment of the present invention further provides a terminal, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program implementing the above-mentioned composite tracking reference signal when executed by the processor steps of the detection method.

An embodiment of the present invention further provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned method for detecting a composite tracking reference signal are implemented. .

The beneficial effects of the present invention are:

The above scheme, by adding the target tracking reference signal in the time-frequency domain of the target reference signal, to obtain a newly configured composite tracking reference signal, and through this setting method of the tracking reference signal, both the newly added tracking reference signal is reduced. The resource overhead also ensures that the newly set composite tracking reference signal meets the tracking requirements, thereby ensuring the reliability and effectiveness of 5G communication.

Description of drawings

FIG. 1 shows a flowchart of a method for configuring a composite tracking reference signal according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of the setting mode of the composite tracking reference signal in case one;

FIG. 3 shows a schematic diagram 1 of the setting mode of the composite tracking reference signal in the second case;

FIG. 4 shows a schematic diagram 2 of the setting mode of the composite tracking reference signal in case 2;

Fig. 5 shows the schematic diagram 3 of the setting mode of the composite tracking reference signal in the second case;

FIG. 6 shows a schematic diagram 4 of the setting mode of the composite tracking reference signal in the second case;

FIG. 7 is a schematic diagram showing the setting mode of the composite tracking reference signal in case three;

FIG. 8 shows a flowchart of a method for detecting a composite tracking reference signal according to an embodiment of the present invention;

FIG. 9 is a schematic block diagram of a base station according to an embodiment of the present invention;

FIG. 10 shows a structural block diagram of a base station according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of a module of a terminal according to an embodiment of the present invention;

FIG. 12 is a block diagram showing the structure of a terminal according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Aiming at the problem that the existing TRS cannot meet the time-frequency tracking performance requirements and cannot guarantee the communication reliability, the present invention provides a configuration and detection method of a composite tracking reference signal, a base station and a terminal.

As shown in FIG. 1 , an embodiment of the present invention provides a method for configuring a composite tracking reference signal, which is applied to a base station, including:

Step 101, generating configuration information of a target tracking reference signal;

It should be noted that the configuration information includes: sequence parameters of the target tracking reference signal (the sequence parameters refer to parameters required for determining the target tracking reference signal symbols, for example, the sequence parameters include the sequence length of the target tracking reference signal), Whether to configure at least one of the indication information of the target tracking reference signal and the time-frequency configuration parameter of the target tracking reference signal.

Step 102, according to the configuration information, add the target tracking reference to the resource elements of the preset OFDM symbol position of the target reference signal at different sub-carrier positions or on the resource elements of the same sub-carrier position and different OFDM symbol positions signal to generate a composite tracking reference signal;

It should be noted that the preset OFDM symbol position includes: the OFDM symbol position where the target reference signal is located or the OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located, that is, in this case, target tracking is performed. The addition of the reference signal can be performed either at the position of the OFDM symbol where the target reference signal is located, or at the OFDM symbol adjacent to the OFDM symbol where the target reference signal is located.

It should be noted that the target reference signal refers to the existing reference signal; when the configuration of the tracking reference signal is performed, the information of the target reference signal is obtained first, and then the corresponding time domain or frequency domain extension is performed on the target reference signal. , and the extended target reference signal is used as the composite tracking reference signal configured by the base station.

Step 103: Send the composite tracking reference signal to the terminal.

The base station sends the composite tracking reference signal to the terminal, so that the terminal detects the composite tracking reference signal according to the configuration, so as to realize time-frequency tracking.

In the solution of this embodiment, the composite tracking reference signal extended by the target reference signal is sent to the terminal, which not only reduces the resource overhead caused by the newly added tracking reference signal, but also ensures that the newly set composite tracking reference signal satisfies the tracking requirements. need.

It should be noted that, in step 101, the base station may generate the configuration information of the target tracking reference signal by itself according to the network requirements, or the base station may directly obtain the configuration information of the target tracking reference signal in the preset rule, and the preset rule mainly refers to: is the communication standard pre-configuration; when the configuration information of the target tracking reference signal is generated by the base station, after step 101, it should also include: sending the configuration information to the terminal through a preset message;

Wherein, the preset message includes: system message (such as system information block (System Information Block, SIB)), downlink control information (Downlink Control Information, DCI) and high-level signaling (such as radio resource control (Radio Resource Control, RRC)) ) signaling) at least one.

The specific manner of generating the composite tracking reference signal is described in detail below from the perspectives of the time domain and the frequency domain, respectively.

1. Increase the bandwidth of the time-domain tracking reference signal

In this case, according to the configuration information, the implementation manner of adding the target tracking reference signal to the resource elements at different subcarrier positions in the preset OFDM symbol position of the target reference signal is as follows:

According to the configuration information, the target tracking reference signal is carried on resource elements of subcarrier positions on at least one side of the preset OFDM symbol of the target reference signal.

Specifically, the target reference signal includes: a secondary synchronization signal (SSS).

It should also be noted that, in this case, when the configuration information includes the time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the bandwidth information of the target tracking reference signal, and the bandwidth information may specifically refer to the target tracking reference signal. Track the number of subcarriers included in the reference signal.

Optionally, when the configuration information includes bandwidth information of the target tracking reference signal, the bandwidth information is obtained in the following manner:

Obtain the bandwidth information of the target tracking reference signal according to the formula: B _A-TRS =f(B _sys );

Wherein, B _A-TRS represents the bandwidth information of the target tracking reference signal, and B _sys represents the system bandwidth (specifically, it may refer to the number of subcarriers included in the system signal).

It should be noted that when B _A-TRS =0, it means that there is no target tracking reference signal.

The above situation 1 illustrates that, when the frequency domain bandwidth of the existing reference signal used for time domain tracking is not wide enough, resulting in low time domain tracking accuracy, the existing reference signal can be located in the existing reference signal of the OFDM symbol where the existing reference signal is located. A target tracking reference signal (that is, an additional tracking reference signal (Additional TRS, A-TRS)) is introduced on one or both sides of the frequency domain of the reference signal. The tracking accuracy of the composite tracking reference signal (composed of the existing reference signal and the A-TRS) can meet the requirements.

In the following practical application, an example of case 1 is described as follows:

Due to the high frequency density of the SSS, the tracking range meets the requirements. However, due to the limited bandwidth of SSS, the tracking accuracy is poor. To this end, the A-TRS can be introduced on both sides of the SSS frequency domain of the OFDM symbol where the SSS is located, as shown in FIG. 2 , where the solid line box represents the SSS, and the dotted line box represents the A-TRS. Among them, the configuration information of A-TRS can be indicated to the terminal by system messages, downlink control information, high-level signaling, etc. through the base station; it can also be indicated by standard presets or implicitly indicated by the system bandwidth, and the implicit indication can be understood as The bandwidth of the A-TRS is a function of the system bandwidth.

In case 1, the method of increasing the bandwidth of the time-domain tracking reference signal is described by taking SSS as an example. In this way, the time-domain tracking accuracy of the composite tracking reference signal can meet the requirements, and at the same time, the existing SSS signal is used, which reduces the overhead. .

2. Improve the frequency-domain density of the time-domain tracking reference signal

In this case, according to the configuration information, the implementation manner of adding the target tracking reference signal to the resource elements at different subcarrier positions in the preset OFDM symbol position of the target reference signal is as follows:

According to the configuration information, determine whether the preset subcarrier positions of the OFDM symbol at equal intervals of the target reference signal are available;

When the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are available, the target tracking reference signal is carried on the resource elements of the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located.

It should also be noted that when the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are unavailable, the subcarrier positions of the OFDM symbols adjacent to the OFDM symbol that are the same as the preset subcarrier frequency domain positions The target tracking reference signal is carried on the resource element of .

Specifically, the target reference signal includes: a channel state information reference signal (Channel State Information Reference Signal, CSI-RS).

It should also be noted that, in this case, when the configuration information includes the time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the frequency domain density of the target tracking reference signal. It should be noted that, The frequency domain density refers to the proportion of the target tracking reference signal in the composite tracking reference signal, and the frequency domain density can be an absolute density or a frequency domain density relative to the existing reference signal. relative value.

The second case illustrates that, when the frequency domain density of the existing reference signal used for time domain tracking is not enough, resulting in a small time domain tracking range, the subcarrier position of the OFDM symbol where the existing reference signal is located at equal intervals Carry A-TRS. The tracking range of the composite tracking reference signal (composed of the existing reference signal and the A-TRS) is made to meet the requirements.

In particular, when the subcarrier positions at equal intervals between adjacent subcarriers of the OFDM symbol where the existing reference signal is located are unavailable for some reason, the A-TRS may be carried at the corresponding subcarrier positions on the adjacent OFDM symbols.

In the following practical application, the second case is illustrated as follows:

Since the bandwidth of the CSI-RS is relatively large, the time-domain tracking accuracy meets the requirements. However, the frequency domain density of CSI-RS is usually low, for example, there is one CSI-RS symbol (corresponding to one CSI-RS port) every 12 subcarriers, so the tracking range is small. To this end, one or more A-TRS symbols can be inserted at equal intervals between the adjacent subcarriers of the symbol where the CSI-RS symbol is located, as shown in Figures 3 and 4 respectively, so that the subcarrier where the composite tracking reference signal is located is It is equally spaced in the frequency domain, wherein the solid line box represents the CSI-RS, and the dashed line box represents the A-TRS.

The configuration information of the A-TRS may be indicated to the terminal by the base station by means of system messages, downlink control information, high-level signaling, etc.; it may also be indicated by standard presets.

As shown in Figure 3, the frequency domain density of A-TRS is 1/2 of the frequency domain density of the composite tracking reference signal, that is, the frequency domain density of the composite tracking reference signal is twice that of the CSI-RS frequency domain density; as shown in Figure 4 As shown, the frequency domain density of the A-TRS is 2/3 of the frequency domain density of the composite tracking reference signal, that is, the frequency domain density of the composite tracking reference signal is 3 times the frequency domain density of the CSI-RS.

It should also be noted that when the equally spaced subcarrier positions between adjacent subcarriers of the OFDM symbol where the CSI-RS is located are unavailable for some reason, one or more subcarriers may be inserted into the corresponding subcarrier positions on the adjacent OFDM symbols. Two A-TRS symbols, as shown in Figures 5 and 6, both carry A-TRS on the subcarrier of the OFDM symbol on the right adjacent to the OFDM symbol where the CSI-RS is located , where the solid-line box represents CSI-RS, and the dashed-line box represents A-TRS.

As shown in Figure 5, the frequency domain density of A-TRS is 1/2 of the frequency domain density of the composite tracking reference signal, that is, the frequency domain density of the composite tracking reference signal is twice that of the CSI-RS frequency domain density; as shown in Figure 6 As shown, the frequency domain density of the A-TRS is 2/3 of the frequency domain density of the composite tracking reference signal, that is, the frequency domain density of the composite tracking reference signal is 3 times the frequency domain density of the CSI-RS.

In the second case, a method for improving the frequency-domain density of the time-domain tracking reference signal is described by taking CSI-RS as an example. In this way, the time-domain tracking range of the composite tracking reference signal can meet the requirements, and the existing CSI is used at the same time. -RS signal, reducing overhead.

It should be noted that in the time domain tracking, the methods of increasing the bandwidth of the tracking reference signal and increasing the density in the frequency domain (ie, the first and second cases) can be used in combination, especially in the bandwidth and frequency domain of the existing reference signal. When the density does not meet the conditions (that is, the bandwidth is narrower and the frequency domain density is lower).

3. Improve the time-domain density of the frequency-domain tracking reference signal

In this case, according to the configuration information, the implementation of adding the target tracking reference signal to the resource elements at the same subcarrier position and different OFDM symbol positions of the target reference signal is as follows:

According to the configuration information, the target tracking reference signal is carried on the resource elements of the OFDM symbol position between the OFDM symbols of the subcarriers where the target reference signal is located.

Specifically, the target reference signal includes: a phase composite tracking reference signal (Phase Tracking Reference Signal, PTRS).

It should also be noted that, in this case, when the configuration information includes the time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-domain density of the target tracking reference signal, and the time-domain density refers to the time-domain density of the target tracking reference signal. is the proportion of the target tracking reference signal in the composite tracking reference signal, and the time-domain density refers to an absolute density or a relative value with respect to the time-domain density of the existing reference signal.

The third case illustrates that, when the minimum time-domain interval of the existing reference signal used for frequency domain tracking is insufficient, resulting in a small frequency-domain tracking range, the existing reference signal of the subcarrier where the existing reference signal is located may A-TRS is inserted between the OFDM symbols where the signal is located (it may be inserted at equal intervals, or it may be inserted at unequal intervals). The tracking range of the composite tracking reference signal (composed of the existing reference signal and the A-TRS) is made to meet the requirements.

In the following practical application, the third case is illustrated as follows:

Generally, PTRS usually has a longer duration relative to the slot in which it is located. As for its time-domain density, although it is configurable, its original purpose is to estimate phase noise. When the phase noise is relatively small, the time-domain density of PTRS will be relatively low. At this time, when PTRS is used for frequency domain tracking, the tracking range will be relatively small. To this end, an A-TRS can be inserted between adjacent OFDM symbols of the subcarrier where the PTRS is located. The specific implementation is shown in FIG. 7 , in which the unfilled solid line box represents PTRS, and the dashed line box represents A-TRS.

The configuration information of the A-TRS may be indicated to the terminal by the base station by means of system messages, downlink control information, high-level signaling, etc.; it may also be indicated by standard presets.

In the third case, the method for improving the time-domain density of the frequency-domain tracking reference signal is described by taking PTRS as an example. In this way, the frequency-domain tracking range of the composite tracking reference signal can meet the requirements, and the existing PTRS signal is used at the same time. Reduced overhead.

It should also be noted that the above-mentioned reference signal used for time domain tracking and the reference signal used for frequency domain tracking may be used in combination. And in practice, the two are usually used in combination.

It should be noted that, in the above embodiment, the target tracking reference signal is added to the time-frequency domain of the target reference signal to obtain a newly configured composite tracking reference signal, and the setting method of the tracking reference signal not only reduces the newly added tracking The resource overhead caused by the reference signal ensures that the newly set composite tracking reference signal meets the tracking requirements, thereby ensuring the reliability and effectiveness of 5G communication.

As shown in FIG. 8 , an embodiment of the present invention further provides a method for detecting a tracking reference signal, which is applied to a terminal, including:

Step 801, obtaining configuration information of a target tracking reference signal;

Step 802, according to the configuration information, detect the composite tracking reference signal sent by the base station;

Wherein, for the composite tracking reference signal, the base station adds target tracking on resource elements in preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on resource elements at the same sub-carrier position and different OFDM symbol positions. The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

Specifically, the configuration information includes: at least one of sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and time-frequency configuration parameters of the target tracking reference signal.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal on resource elements bearing subcarrier positions on at least one side of a preset OFDM symbol of the target reference signal.

Specifically, the target reference signal includes: a secondary synchronization signal SSS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is bandwidth information of the target tracking reference signal.

Optionally, the step of acquiring the configuration information of the target tracking reference signal includes:

Obtain the configuration information of the target tracking reference signal through a preset message; and/or

Obtain the configuration information of the target tracking reference signal through a preset rule;

Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-level signaling;

The preset rules include: implicit indication of system bandwidth and/or pre-configuration of communication standards.

Specifically, when the preset rule is an implicit indication of the system bandwidth, the acquisition method of the bandwidth information of the target tracking reference signal is:

Obtain the bandwidth information of the target tracking reference signal according to the formula: B _A-TRS =f(B _sys );

Among them, B _A-TRS represents the bandwidth information of the target tracking reference signal, and B _sys represents the system bandwidth.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal carried on resource elements at equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located; or, the target reference signal and The target tracking reference signal carried on the resource element of the same subcarrier position as the preset subcarrier frequency domain position of the OFDM symbol adjacent to the OFDM symbol.

Specifically, the target reference signal includes: channel state information reference signal CSI-RS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the frequency domain density of the target tracking reference signal.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal carried on resource elements at OFDM symbol positions between OFDM symbols of subcarriers where the target reference signal is located.

Specifically, the target reference signal includes: a phase composite tracking reference signal PTRS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-domain density of the target tracking reference signal.

Optionally, the step of acquiring the configuration information of the target tracking reference signal includes:

Obtain the configuration information of the target tracking reference signal through a preset message; and/or

Obtain the configuration information of the target tracking reference signal through a preset rule;

Wherein, the preset message includes: at least one of a system message, DCI, high-layer signaling, and a configuration message of the target reference signal;

The preset rules include: pre-configuration of communication standards.

It should be noted that, all the descriptions on the terminal side in the above embodiments are applicable to the embodiments of the detection method of the composite tracking reference signal applied to the terminal side, and the same technical effect can also be achieved.

As shown in FIG. 9, an embodiment of the present invention provides a base station, including:

a first generating module 901, configured to generate configuration information of the target tracking reference signal;

The second generating module 902 is configured to, according to the configuration information, on the preset OFDM symbol position of the target reference signal on the resource elements at different sub-carrier positions or the resource elements at the same sub-carrier position and different OFDM symbol positions A target tracking reference signal is added to generate a composite tracking reference signal;

a first sending module 903, configured to send the composite tracking reference signal to a terminal;

The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

Specifically, the configuration information includes: at least one of sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and time-frequency configuration parameters of the target tracking reference signal.

Optionally, the base station further includes:

a second sending module, configured to send the configuration information to the terminal through a preset message;

Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-layer signaling.

Optionally, the first generation module 901 is used for:

Obtain the configuration information of the target tracking reference signal set in the preset rule.

Optionally, when the target tracking reference signal is added to resource elements at different subcarrier positions in the preset OFDM symbol positions of the target reference signal, the second generating module 902 is configured to:

According to the configuration information, the target tracking reference signal is carried on resource elements of subcarrier positions on at least one side of the preset OFDM symbol of the target reference signal.

Specifically, the target reference signal includes: a secondary synchronization signal SSS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is bandwidth information of the target tracking reference signal.

Specifically, when the bandwidth information is indicated by the system bandwidth, the acquisition method of the bandwidth information is:

Obtain the bandwidth information of the target tracking reference signal according to the formula: B _A-TRS =f(B _sys );

Among them, B _A-TRS represents the bandwidth information of the target tracking reference signal, and B _sys represents the system bandwidth.

Optionally, when the target tracking reference signal is added to resource elements at different subcarrier positions in the preset OFDM symbol positions of the target reference signal, the second generating module 902 is configured to:

According to the configuration information, determine whether the preset subcarrier positions of the OFDM symbol at equal intervals of the target reference signal are available;

When the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are available, the target tracking reference signal is carried on the resource elements of the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located.

Specifically, the second generation module 902 is further configured to: when the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are unavailable, create a subcarrier between the OFDM symbols adjacent to the OFDM symbol and the preset subcarriers. The target tracking reference signal is carried on the resource elements at the same subcarrier position in the frequency domain.

Specifically, the target reference signal includes: channel state information reference signal CSI-RS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the frequency domain density of the target tracking reference signal.

Optionally, when the target tracking reference signal is added to resource elements at the same subcarrier position and different OFDM symbol positions of the target reference signal, the second generating module 902 is configured to:

According to the configuration information, the target tracking reference signal is carried on the resource elements of the OFDM symbol position between the OFDM symbols of the subcarriers where the target reference signal is located.

Specifically, the target reference signal includes: a phase composite tracking reference signal PTRS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-domain density of the target tracking reference signal.

It should be noted that this base station embodiment is a base station corresponding to the above-mentioned configuration method of the composite tracking reference signal applied to the base station side, and all the implementation manners of the above-mentioned embodiments are applicable to this base station embodiment, and the same can be achieved. technical effect.

An embodiment of the present invention further provides a base station, including: a memory, a processor, and a computer program stored in the memory and running on the processor, the computer program being executed by the processor to implement the above-mentioned application to the base station side Each process in the embodiment of the method for configuring the composite tracking reference signal can achieve the same technical effect. In order to avoid repetition, details are not repeated here.

An embodiment of the present invention further provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned composite tracking reference signal applied to the base station side is implemented Each process in the embodiment of the configuration method can achieve the same technical effect. To avoid repetition, details are not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

FIG. 10 is a structural diagram of a base station according to an embodiment of the present invention, which can implement the details of the above-mentioned configuration method of the composite tracking reference signal applied to the base station side, and achieve the same effect. As shown in FIG. 10, the base station 1000 includes: a processor 1001, a transceiver 1002, a memory 1003 and a bus interface, wherein:

The processor 1001 is used to read the program in the memory 1003, and execute the following processes:

generating the configuration information of the target tracking reference signal;

According to the configuration information, the target tracking reference signal is added to the resource elements at the preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on the resource elements at the same sub-carrier position and different OFDM symbol positions to generate a target tracking reference signal. composite tracking reference signal;

sending the composite tracking reference signal to the terminal;

The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

Specifically, the configuration information includes: at least one of sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and time-frequency configuration parameters of the target tracking reference signal.

In FIG. 10, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 linked together. The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 1002 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium.

The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 may store data used by the processor 1001 in performing operations.

Optionally, the processor 1001 reads the program in the memory 1003, and is further configured to execute:

sending the configuration information to the terminal through a preset message;

Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-layer signaling.

Optionally, the processor 1001 reads the program in the memory 1003, and is further configured to execute: acquiring the configuration information of the target tracking reference signal set in the preset rule.

Optionally, the processor 1001 reads the program in the memory 1003, and is further configured to execute: according to the configuration information, carry on the resource element of the sub-carrier position on at least one side of the preset OFDM symbol of the target reference signal. Target tracking reference signal.

Specifically, the target reference signal includes: a secondary synchronization signal SSS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is bandwidth information of the target tracking reference signal.

Specifically, when the bandwidth information is indicated by the system bandwidth, the processor 1001 reads the program in the memory 1003, and is further configured to execute: obtain the target tracking reference signal according to the formula: B _A-TRS =f(B _sys ) bandwidth information;

Among them, B _A-TRS represents the bandwidth information of the target tracking reference signal, and B _sys represents the system bandwidth.

Optionally, the processor 1001 reads the program in the memory 1003, and is further configured to execute: according to the configuration information, determine whether the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are available;

When the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are available, the target tracking reference signal is carried on the resource elements of the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located.

Optionally, the processor 1001 reads the program in the memory 1003, and is further configured to execute: when the equally-spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are unavailable, when the OFDM symbol is adjacent to the OFDM symbol The target tracking reference signal is carried on resource elements of the OFDM symbol at the same subcarrier position as the preset subcarrier frequency domain position.

Specifically, the target reference signal includes: channel state information reference signal CSI-RS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the frequency domain density of the target tracking reference signal.

Optionally, the processor 1001 reads the program in the memory 1003, and is further configured to execute: according to the configuration information, carry the target on the resource element of the OFDM symbol position between the OFDM symbols of the subcarriers where the target reference signal is located Track reference signal.

Specifically, the target reference signal includes: a phase composite tracking reference signal PTRS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-domain density of the target tracking reference signal.

In the base station according to the embodiment of the present invention, the target tracking reference signal is added to the time-frequency domain of the target reference signal to obtain a newly configured composite tracking reference signal. By setting the tracking reference signal in this way, the newly added tracking reference signal is reduced. The resulting resource overhead ensures that the newly set composite tracking reference signal meets the tracking requirements, thereby ensuring the reliability and effectiveness of 5G communication.

As shown in FIG. 11 , an embodiment of the present invention further provides a terminal, including:

an acquisition module 1101, configured to acquire configuration information of a target tracking reference signal;

A detection module 1102, configured to detect the composite tracking reference signal sent by the base station according to the configuration information;

Wherein, for the composite tracking reference signal, the base station adds target tracking on resource elements in preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on resource elements at the same sub-carrier position and different OFDM symbol positions. The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

Specifically, the configuration information includes: at least one of sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and time-frequency configuration parameters of the target tracking reference signal.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal on resource elements bearing subcarrier positions on at least one side of a preset OFDM symbol of the target reference signal.

Specifically, the target reference signal includes: a secondary synchronization signal SSS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is bandwidth information of the target tracking reference signal.

Optionally, the obtaining module 1101 is used for:

Obtain the configuration information of the target tracking reference signal through a preset message; and/or

Obtain the configuration information of the target tracking reference signal through a preset rule;

Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-level signaling;

The preset rules include: implicit indication of system bandwidth and/or pre-configuration of communication standards.

Specifically, when the preset rule is an implicit indication of the system bandwidth, the acquisition method of the bandwidth information of the target tracking reference signal is:

Obtain the bandwidth information of the target tracking reference signal according to the formula: B _A-TRS =f(B _sys );

Among them, B _A-TRS represents the bandwidth information of the target tracking reference signal, and B _sys represents the system bandwidth.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal carried on resource elements at equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located; or, the target reference signal and The target tracking reference signal carried on the resource element of the same subcarrier position as the preset subcarrier frequency domain position of the OFDM symbol adjacent to the OFDM symbol.

Specifically, the target reference signal includes: channel state information reference signal CSI-RS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the frequency domain density of the target tracking reference signal.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal carried on resource elements at OFDM symbol positions between OFDM symbols of subcarriers where the target reference signal is located.

Specifically, the target reference signal includes: a phase composite tracking reference signal PTRS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-domain density of the target tracking reference signal.

Optionally, the obtaining module 1101 is used for:

Obtain the configuration information of the target tracking reference signal through a preset message; and/or

Obtain the configuration information of the target tracking reference signal through a preset rule;

Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-level signaling;

The preset rules include: implicit indication of system bandwidth and/or pre-configuration of communication standards.

It should be noted that this terminal embodiment is a terminal corresponding to the above-mentioned detection method of a composite tracking reference signal applied to the terminal side, and all the implementation manners of the above-mentioned embodiments are applicable to this terminal embodiment, and the same can be achieved. technical effect.

An embodiment of the present invention further provides a terminal, including: a memory, a processor, and a computer program stored in the memory and running on the processor, where the computer program is executed by the processor to implement the above-mentioned application to the terminal side The various processes in the embodiments of the method for detecting the composite tracking reference signal can achieve the same technical effect. In order to avoid repetition, they will not be repeated here.

An embodiment of the present invention further provides a computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned composite tracking reference signal applied to the terminal side is implemented Each process in the embodiment of the detection method can achieve the same technical effect. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk, or an optical disk.

As shown in FIG. 12 , it is a structural block diagram of a terminal according to an embodiment of the present invention. The application entity of the composite tracking reference signal detection method of the present invention will be specifically described below with reference to the figure.

The terminal 1200 shown in FIG. 12 includes: at least one processor 1201 , memory 1202 , at least one network interface 1204 and user interface 1203 . The various components in terminal 1200 are coupled together by bus system 1205 . It is understood that the bus system 1205 is used to implement the connection communication between these components. In addition to the data bus, the bus system 1205 also includes a power bus, a control bus, and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 1205 in FIG. 12 .

Among them, the user interface 1203 may include a display, a keyboard or a pointing device (eg, a mouse, a track ball, a touch pad or a touch screen, etc.).

It can be understood that the memory 1202 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may be Read-Only Memory (ROM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. The volatile memory may be random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double DataRate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and Direct memory bus random access memory (Direct Rambus RAM, DRRAM). The memory 1202 of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

In some embodiments, memory 1202 stores the following elements, executable modules or data structures, or a subset thereof, or an extended set of them: an operating system 12021 and an application program 12022.

The operating system 12021 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 12022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., for implementing various application services. A program for implementing the method of the embodiment of the present invention may be included in the application program 12022 .

In this embodiment of the present invention, the mobile terminal 1200 further includes: a computer program stored in the memory 1202 and executable on the processor 1201 , specifically, a computer control program in the application program 12022 , and the computer program is controlled by the processor 1201 The following steps are implemented when executing:

Obtain the configuration information of the target tracking reference signal;

According to the configuration information, detect the composite tracking reference signal sent by the base station;

Wherein, for the composite tracking reference signal, the base station adds target tracking on resource elements in preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on resource elements at the same sub-carrier position and different OFDM symbol positions. The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located.

Specifically, the configuration information includes: at least one of sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and time-frequency configuration parameters of the target tracking reference signal.

The methods disclosed in the above embodiments of the present invention may be applied to the processor 1201 or implemented by the processor 1201 . The processor 1201 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the processor 1201 or an instruction in the form of software. The above-mentioned processor 1201 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other possible Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present invention may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other computer-readable storage media that are mature in the art. The computer-readable storage medium is located in the memory 1202, and the processor 1201 reads the information in the memory 1202, and completes the steps of the above method in combination with its hardware. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 1201, the following steps are implemented.

It will be appreciated that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDevices, DSPDs), programmable logic devices (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general purpose processor, controller, microcontroller, microprocessor, other electronic unit for performing the functions described in this application or in its combination.

For a software implementation, the techniques described herein may be implemented through modules (eg, procedures, functions, etc.) that perform the functions described herein. Software codes may be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal on resource elements bearing subcarrier positions on at least one side of a preset OFDM symbol of the target reference signal.

Specifically, the target reference signal includes: a secondary synchronization signal SSS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is bandwidth information of the target tracking reference signal.

Optionally, when the computer program is executed by the processor 1201, it realizes: acquiring the configuration information of the target tracking reference signal through a preset message; and/or

Obtain the configuration information of the target tracking reference signal through a preset rule;

Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-level signaling;

The preset rules include: implicit indication of system bandwidth and/or pre-configuration of communication standards.

Optionally, when the preset rule is an implicit indication of the system bandwidth, when the computer program is executed by the processor 1201, it is implemented: obtain the bandwidth information of the target tracking reference signal according to the formula: B _A-TRS =f(B _sys );

Among them, B _A-TRS represents the bandwidth information of the target tracking reference signal, and B _sys represents the system bandwidth.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal carried on resource elements at equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located; or, the target reference signal and The target tracking reference signal carried on the resource element of the same subcarrier position as the preset subcarrier frequency domain position of the OFDM symbol adjacent to the OFDM symbol.

Specifically, the target reference signal includes: channel state information reference signal CSI-RS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the frequency domain density of the target tracking reference signal.

Optionally, the composite tracking reference signal includes: a target reference signal and a target tracking reference signal carried on resource elements at OFDM symbol positions between OFDM symbols of subcarriers where the target reference signal is located.

Specifically, the target reference signal includes: a phase composite tracking reference signal PTRS.

Specifically, when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-domain density of the target tracking reference signal.

Optionally, when the computer program is executed by the processor 1201, it realizes: acquiring the configuration information of the target tracking reference signal through a preset message; and/or

Obtain the configuration information of the target tracking reference signal through a preset rule;

Wherein, the preset message includes: at least one of a system message, DCI, high-layer signaling, and a configuration message of the target reference signal;

The preset rules include: pre-configuration of communication standards.

The terminal 1200 can implement each process implemented by the terminal in the foregoing embodiments, and in order to avoid repetition, details are not repeated here.

The terminal according to the embodiment of the present invention can detect the tracking reference signal according to the configuration of the base station, which not only reduces the resource overhead caused by the newly added tracking reference signal, but also ensures that the newly set composite tracking reference signal meets the tracking requirement, so as to reduce the cost of the tracking reference signal. This ensures the reliability and effectiveness of 5G communications.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments may be referred to each other.

It should be understood by those skilled in the art that the embodiments of the embodiments of the present invention may be provided as a method, an apparatus, or a computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

Embodiments of the present invention are described with reference to flowcharts and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the present invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing terminal equipment to produce a machine that causes the instructions to be executed by the processor of the computer or other programmable data processing terminal equipment Means are created for implementing the functions specified in the flow or flows of the flowcharts and/or the blocks or blocks of the block diagrams.

These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing terminal equipment to operate in a particular manner, such that the instructions stored in the computer readable memory result in an article of manufacture comprising instruction means, the The instruction means implement the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing terminal equipment, so that a series of operational steps are performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby executing on the computer or other programmable terminal equipment The instructions executed on the above provide steps for implementing the functions specified in the flowchart or blocks and/or the block or blocks of the block diagrams.

While preferred embodiments of the embodiments of the present invention have been described, additional changes and modifications to these embodiments may be made by those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the embodiments of the present invention.

It should also be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply those entities or operations There is no such actual relationship or order between them. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or terminal device comprising a list of elements includes not only those elements, but also a non-exclusive list of elements. other elements, or also include elements inherent to such a process, method, article or terminal equipment. Without further limitation, an element defined by the phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

The above are the preferred embodiments of the present invention, and it should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications are also included in the present invention. within the scope of protection of the invention.

Claims (62)

1. A method for configuring a composite tracking reference signal, applied to a base station, characterized in that it comprises: generating the configuration information of the target tracking reference signal; According to the configuration information, the target tracking reference signal is added to the resource elements at the preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on the resource elements at the same sub-carrier position and different OFDM symbol positions to generate a target tracking reference signal. composite tracking reference signal; sending the composite tracking reference signal to the terminal; The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located. 2 . The method for configuring a composite tracking reference signal according to claim 1 , wherein the configuration information comprises: sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and information about the target tracking reference signal. 3 . At least one of the time-frequency configuration parameters. 3. The method for configuring a composite tracking reference signal according to claim 1, wherein after the step of generating the configuration information of the target tracking reference signal, the method further comprises: sending the configuration information to the terminal through a preset message; Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-layer signaling. 4. The method for configuring the composite tracking reference signal according to claim 1, wherein the step of generating the configuration information of the target tracking reference signal comprises: Obtain the configuration information of the target tracking reference signal set in the preset rule. 5 . The method for configuring a composite tracking reference signal according to claim 2 , wherein, according to the configuration information, resource elements at different subcarrier positions at preset OFDM symbol positions of the target reference signal are selected. 6 . The implementation of the target tracking reference signal is added, including: According to the configuration information, the target tracking reference signal is carried on resource elements of subcarrier positions on at least one side of the preset OFDM symbol of the target reference signal. 6 . The method for configuring a composite tracking reference signal according to claim 5 , wherein the target reference signal comprises: a secondary synchronization signal SSS. 7 . 7 . The method for configuring the composite tracking reference signal according to claim 5 , wherein when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-frequency configuration parameter of the target tracking reference signal. 8 . Bandwidth information. 8 . The method for configuring a composite tracking reference signal according to claim 7 , wherein when the bandwidth information is indicated by a system bandwidth, the bandwidth information of the target tracking reference signal is based on the number of subcarriers included in the system signal. 9 . number confirmed. 9 . The method for configuring the composite tracking reference signal according to claim 2 , wherein, according to the configuration information, resource elements at different subcarrier positions at preset OFDM symbol positions of the target reference signal are selected. 10 . The implementation of the target tracking reference signal is added, including: According to the configuration information, determine whether the preset subcarrier positions of the OFDM symbol at equal intervals of the target reference signal are available; When the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are available, the target tracking reference signal is carried on the resource elements of the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located. 10 . The method for configuring a composite tracking reference signal according to claim 9 , wherein, according to the configuration information, resource elements at different sub-carrier positions at preset OFDM symbol positions of the target reference signal are used. 11 . The implementation method of adding the target tracking reference signal above also includes: When the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are unavailable, the target is carried on resource elements of the same subcarrier position as the preset subcarrier frequency domain position of the OFDM symbol adjacent to the OFDM symbol Track reference signal. 11 . The method for configuring a composite tracking reference signal according to claim 9 , wherein the target reference signal comprises: a channel state information reference signal CSI-RS. 12 . 12 . The method for configuring a composite tracking reference signal according to claim 9 , wherein when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-frequency configuration parameter of the target tracking reference signal. 13 . frequency domain density. 13 . The method for configuring a composite tracking reference signal according to claim 2 , wherein, according to the configuration information, the target tracking reference signal is added to resource elements at the same subcarrier position and different OFDM symbol positions of the target reference signal. 14 . implementation, including: According to the configuration information, the target tracking reference signal is carried on the resource elements of the OFDM symbol position between the OFDM symbols of the subcarriers where the target reference signal is located. 14 . The method for configuring a composite tracking reference signal according to claim 13 , wherein the target reference signal comprises: a phase composite tracking reference signal PTRS. 15 . 15 . The method for configuring the composite tracking reference signal according to claim 13 , wherein when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-frequency configuration parameter of the target tracking reference signal. 16 . time-domain density. 16. A method for detecting a composite tracking reference signal, applied to a terminal, comprising: Obtain the configuration information of the target tracking reference signal; According to the configuration information, detect the composite tracking reference signal sent by the base station; Wherein, for the composite tracking reference signal, the base station adds target tracking on resource elements in preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on resource elements at the same sub-carrier position and different OFDM symbol positions. The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located. 17 . The method for detecting a composite tracking reference signal according to claim 16 , wherein the configuration information comprises: sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and information about the target tracking reference signal. 18 . At least one of the time-frequency configuration parameters. 18 . The method for detecting a composite tracking reference signal according to claim 17 , wherein the composite tracking reference signal comprises: a target reference signal and a subcarrier position on at least one side of a preset OFDM symbol carrying the target reference signal. 19 . The target tracking reference signal on the resource particle. 19 . The method for detecting a composite tracking reference signal according to claim 18 , wherein the target reference signal comprises: a secondary synchronization signal SSS. 20 . 20 . The method for detecting a composite tracking reference signal according to claim 18 , wherein when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-frequency configuration parameter of the target tracking reference signal. 21 . Bandwidth information. 21. The method for detecting a composite tracking reference signal according to claim 20, wherein the step of acquiring the configuration information of the target tracking reference signal comprises: Obtain the configuration information of the target tracking reference signal through a preset message; and/or Obtain the configuration information of the target tracking reference signal through a preset rule; Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-level signaling; The preset rules include: implicit indication of system bandwidth and/or pre-configuration of communication standards. 22 . The method for detecting a composite tracking reference signal according to claim 21 , wherein when the preset rule is a system bandwidth implicit indication, the bandwidth information of the target tracking reference signal is based on the The number of carriers is determined. 23 . The method for detecting a composite tracking reference signal according to claim 17 , wherein the composite tracking reference signal comprises: a target reference signal and an equally spaced preset subcarrier carried in an OFDM symbol where the target reference signal is located. 24 . The target tracking reference signal on the resource element of the position; or, the target reference signal and the target tracking reference carried on the resource element of the same subcarrier position as the preset subcarrier frequency domain position of the OFDM symbol adjacent to the OFDM symbol Signal. 24. The method for detecting a composite tracking reference signal according to claim 23, wherein the target reference signal comprises: a channel state information reference signal CSI-RS. 25 . The method for detecting a composite tracking reference signal according to claim 23 , wherein when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-frequency configuration parameter of the target tracking reference signal 25 . frequency domain density. 26 . The method for detecting a composite tracking reference signal according to claim 17 , wherein the composite tracking reference signal comprises: a target reference signal and an OFDM symbol position carried between OFDM symbols of subcarriers where the target reference signal is located. 27 . The target tracking reference signal on the resource particle. 27. The method for detecting a composite tracking reference signal according to claim 26, wherein the target reference signal comprises: a phase composite tracking reference signal PTRS. 28 . The method for detecting a composite tracking reference signal according to claim 26 , wherein when the configuration information includes a time-frequency configuration parameter of the target tracking reference signal, the time-frequency configuration parameter is the time-frequency configuration parameter of the target tracking reference signal 28 . time-domain density. 29. The method for detecting a composite tracking reference signal according to claim 23 or 26, wherein the step of acquiring the configuration information of the target tracking reference signal comprises: Obtain the configuration information of the target tracking reference signal through a preset message; and/or Obtain the configuration information of the target tracking reference signal through a preset rule; Wherein, the preset message includes: at least one of a system message, DCI, high-layer signaling, and a configuration message of the target reference signal; The preset rules include: pre-configuration of communication standards. 30. A base station, comprising: a first generating module, configured to generate configuration information of the target tracking reference signal; The second generation module is configured to, according to the configuration information, on the preset OFDM symbol position of the target reference signal on the resource elements at different sub-carrier positions or on the resource elements at the same sub-carrier position and different OFDM symbol positions Add target tracking reference signal to generate composite tracking reference signal; a first sending module, configured to send the composite tracking reference signal to a terminal; The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located. 31. The base station according to claim 30, wherein the configuration information comprises: sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and time-frequency configuration parameters of the target tracking reference signal. at least one. 32. The base station of claim 30, further comprising: a second sending module, configured to send the configuration information to the terminal through a preset message; Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-layer signaling. 33. The base station according to claim 30, wherein the first generation module is configured to: Obtain the configuration information of the target tracking reference signal set in the preset rule. 34. The base station according to claim 31, wherein when the target tracking reference signal is added to resource elements at different subcarrier positions in preset OFDM symbol positions of the target reference signal, the first The second generation module is used to: According to the configuration information, the target tracking reference signal is carried on resource elements of subcarrier positions on at least one side of the preset OFDM symbol of the target reference signal. 35. The base station according to claim 34, wherein the target reference signal comprises: a secondary synchronization signal SSS. The base station according to claim 34, wherein when the configuration information includes a time-frequency configuration parameter of a target tracking reference signal, the time-frequency configuration parameter is bandwidth information of the target tracking reference signal. The base station according to claim 36, wherein when the bandwidth information is indicated by a system bandwidth, the bandwidth information of the target tracking reference signal is determined according to the number of subcarriers included in the system signal. 38 . The base station according to claim 31 , wherein when the target tracking reference signal is added to resource elements at different subcarrier positions in preset OFDM symbol positions of the target reference signal, the first The second generation module is used to: According to the configuration information, determine whether the preset subcarrier positions of the OFDM symbol at equal intervals of the target reference signal are available; When the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are available, the target tracking reference signal is carried on the resource elements of the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located. 39. The base station according to claim 38, wherein the second generation module is further configured to: When the equally spaced preset subcarrier positions of the OFDM symbol where the target reference signal is located are unavailable, the target is carried on resource elements of the same subcarrier position as the preset subcarrier frequency domain position of the OFDM symbol adjacent to the OFDM symbol Track reference signal. 40. The base station according to claim 38, wherein the target reference signal comprises: a channel state information reference signal CSI-RS. 41. The base station according to claim 38, wherein when the configuration information includes a time-frequency configuration parameter of a target tracking reference signal, the time-frequency configuration parameter is a frequency domain density of the target tracking reference signal. 42. The base station according to claim 31, wherein, when the target tracking reference signal is added to resource elements at the same subcarrier position and different OFDM symbol positions of the target reference signal, the second generation module is configured to: According to the configuration information, the target tracking reference signal is carried on the resource elements of the OFDM symbol position between the OFDM symbols of the subcarriers where the target reference signal is located. 43. The base station according to claim 42, wherein the target reference signal comprises: a phase composite tracking reference signal PTRS. 44. The base station according to claim 42, wherein when the configuration information includes a time-frequency configuration parameter of a target tracking reference signal, the time-frequency configuration parameter is a time-domain density of the target tracking reference signal. 45. A base station, characterized in that it comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, the computer program being executed by the processor to implement claims 1 to 15 The steps of the configuration method of the composite tracking reference signal according to any one of the above. 46. A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program according to any one of claims 1 to 15 is implemented. Steps of a method for configuring a composite tracking reference signal. 47. A terminal, characterized in that, comprising: an acquisition module for acquiring the configuration information of the target tracking reference signal; a detection module, configured to detect the composite tracking reference signal sent by the base station according to the configuration information; Wherein, for the composite tracking reference signal, the base station adds target tracking on resource elements in preset OFDM symbol positions of the target reference signal at different sub-carrier positions or on resource elements at the same sub-carrier position and different OFDM symbol positions. The preset OFDM symbol position includes: an OFDM symbol position where the target reference signal is located or an OFDM symbol position adjacent to the OFDM symbol where the target reference signal is located. 48. The terminal according to claim 47, wherein the configuration information comprises: sequence parameters of the target tracking reference signal, indication information of whether to configure the target tracking reference signal, and time-frequency configuration parameters of the target tracking reference signal. at least one. 49. The terminal according to claim 48, wherein the composite tracking reference signal comprises: a target reference signal and a target on a resource element of a subcarrier position of at least one side of a preset OFDM symbol carrying the target reference signal Track reference signal. 50. The terminal according to claim 49, wherein the target reference signal comprises: a secondary synchronization signal SSS. 51. The terminal according to claim 49, wherein when the configuration information includes a time-frequency configuration parameter of a target tracking reference signal, the time-frequency configuration parameter is bandwidth information of the target tracking reference signal. 52. The terminal according to claim 51, wherein the acquisition module is used for: Obtain the configuration information of the target tracking reference signal through a preset message; and/or Obtain the configuration information of the target tracking reference signal through a preset rule; Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-level signaling; The preset rules include: implicit indication of system bandwidth and/or pre-configuration of communication standards. 53. The terminal according to claim 52, wherein when the preset rule is an implicit indication of system bandwidth, the bandwidth information of the target tracking reference signal is determined according to the number of subcarriers included in the system signal. 54. The terminal according to claim 48, wherein the composite tracking reference signal comprises: a target reference signal and a resource element borne on a resource element at an equally spaced preset subcarrier position of an OFDM symbol where the target reference signal is located. A target tracking reference signal; or, a target reference signal and a target tracking reference signal carried on resource elements of the same subcarrier position as the preset subcarrier frequency domain position of the OFDM symbol adjacent to the OFDM symbol. 55. The terminal according to claim 54, wherein the target reference signal comprises: channel state information reference signal CSI-RS. 56. The terminal according to claim 54, wherein when the configuration information includes a time-frequency configuration parameter of a target tracking reference signal, the time-frequency configuration parameter is a frequency domain density of the target tracking reference signal. 57. The terminal according to claim 48, wherein the composite tracking reference signal comprises: a target reference signal and a target carried on a resource element at a position of an OFDM symbol between OFDM symbols of subcarriers where the target reference signal is located Track reference signal. 58. The terminal according to claim 57, wherein the target reference signal comprises: a phase composite tracking reference signal PTRS. 59. The terminal according to claim 57, wherein when the configuration information includes a time-frequency configuration parameter of a target tracking reference signal, the time-frequency configuration parameter is a time-domain density of the target tracking reference signal. 60. The terminal according to claim 54 or 57, wherein the acquisition module is used for: Obtain the configuration information of the target tracking reference signal through a preset message; and/or Obtain the configuration information of the target tracking reference signal through a preset rule; Wherein, the preset message includes: at least one of system message, downlink control information DCI and high-level signaling; The preset rules include: implicit indication of system bandwidth and/or pre-configuration of communication standards. 61. A terminal, characterized in that it comprises: a memory, a processor and a computer program stored in the memory and running on the processor, the computer program being executed by the processor to achieve the performance as claimed in claims 16 to 29 The steps of any one of the method for detecting a composite tracking reference signal. 62. A computer-readable storage medium, characterized in that, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program according to any one of claims 16 to 29 is implemented. Steps of a method for detecting a composite tracking reference signal.

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