CN109412765B

CN109412765B - Transmission method and transmission equipment of reference signal

Info

Publication number: CN109412765B
Application number: CN201710711819.2A
Authority: CN
Inventors: 郤伟; 孙鹏; 孙晓东; 宋扬; 施源
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-08-18
Filing date: 2017-08-18
Publication date: 2020-11-17
Anticipated expiration: 2037-08-18
Also published as: CN109412765A

Abstract

The invention provides a transmission method and transmission equipment of reference signals, which solve the problem that when two reference signals are collided, one collided reference signal is usually punched, so that the action of the reference signal cannot be realized and the communication performance is influenced. The transmission method of the invention comprises the following steps: when the resource positions of the two transmitted preset reference signals meet a preset resource collision condition, carrying out mobile processing on the subcarrier position of a first preset reference signal in the two preset reference signals to obtain a target subcarrier position of the first preset reference signal; the target subcarrier position is a frequency domain position except a frequency domain position corresponding to a subcarrier of a second preset reference signal in a target physical resource block PRB where the first preset reference signal is located, so that resource collision is avoided when the first preset reference signal and the second preset reference signal are transmitted, the performance of each reference signal is improved, and the reliability of a communication link is effectively guaranteed.

Description

Transmission method and transmission equipment of reference signal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a transmission method and a transmission device for a reference signal.

Background

For the fifth Generation (5Generation, abbreviated as 5G) mobile communication system in the future, high frequency transmission technology and large scale antenna array technology are attracting attention in order to achieve the objectives of 20Gbps for downlink transmission rate and 10Gbps for uplink transmission rate.

The high-frequency band has richer spectrum resources, but the transmission distance is limited due to large attenuation; while large-scale antenna arrays can provide larger beamforming gain, the antenna aperture is usually larger. However, the two may be combined: the short wavelength characteristic of the high frequency band can reduce the aperture of the large-scale antenna array, so that the dense deployment of the antenna is easier and more feasible; on the contrary, the large beam forming gain generated by the large-scale antenna array can effectively resist the high-frequency transmission loss, thereby greatly expanding the transmission distance of high-frequency transmission. Therefore, the high-frequency transmission technology and the large-scale antenna array technology complement each other, and the combination of the high-frequency transmission technology and the large-scale antenna array technology can achieve complementary advantages.

Generally, in order to improve the transmission efficiency, high-order Modulation such as 16 Quadrature Amplitude Modulation (QAM), 64QAM, 256QAM is often used. However, higher order modulation is often susceptible to phase noise. Also, the higher the modulation order, the more sensitive to phase noise. Further, the higher the operating frequency, the greater the phase noise. Therefore, for high frequency transmission, in order to remove phase noise, the transmitting end needs to transmit a reference signal known to the receiving end, i.e. a Phase Tracking Reference Signal (PTRS), according to which the receiving end can estimate the phase noise and then perform corresponding phase compensation. Generally, the frequency-domain density of PTRS depends on the system bandwidth, and for example, one PTRS subcarrier may be inserted every 1, every 2, every 4, every 8, or every 16 resource blocks (PRBs); the time domain density is related to a Modulation Coding Scheme (MCS) of the data symbols, and for example, one PTRS symbol may be inserted every 1, 2, or 4 Orthogonal Frequency Division Multiplexing (OFDM) symbols or SC-OFDM (single carrier OFDM) symbols.

On one hand, since DMRS ports in a demodulation reference signal (DMRS) port group are quasi-co-located (QCL), and phase noise of corresponding data streams is the same, one DMRS port group may share one PTRS port. In general, the PTRS may be transmitted on one of the DMRS ports in the group of DMRS ports.

On the other hand, a channel state information reference signal (CSI-RS) and a Sounding Reference Signal (SRS) may be used for Channel State Information (CSI) acquisition and beam management of a downlink and an uplink, respectively.

Taking PTRS and CSI-RS as examples, the pilot patterns are different for the PTRS and CSI-RS due to their different roles. If the two are configured independently, no coordination is performed. Resource collisions typically occur.

When the reference signals collide with each other, one of them is usually punctured. But this comes at the expense of performance. Taking the collision of the PTRS and the CSI-RS as an example, if the CSI-RS is punctured, it is inevitable to affect CSI measurement or beam management of a group of users; if the PTRS is punctured, the phase noise on all subcarriers of the OFDM symbol cannot be estimated, which affects the detection performance, and especially in the case of adopting a high-order modulation method, the reliability of the communication link is significantly reduced.

As can be seen from the above, when the reference signals collide with each other, the communication performance is affected by puncturing a reference signal that has collided with the reference signal.

Disclosure of Invention

The invention aims to provide a transmission method and transmission equipment of reference signals, which aim to solve the problem that when two reference signals collide with each other, the collision of the two reference signals is usually caused by punching a certain reference signal, so that the action of the reference signal cannot be realized, and the communication performance is influenced.

In order to achieve the above object, the present invention provides a method for transmitting a reference signal, including:

when the resource positions of two transmitted preset reference signals meet a preset resource collision condition, carrying out mobile processing on the subcarrier position of a first preset reference signal in the two preset reference signals to obtain a target subcarrier position of the first preset reference signal;

the target subcarrier position is a frequency domain position in a target physical resource block PRB where the first preset reference signal is located, except for a frequency domain position corresponding to a subcarrier of a second preset reference signal, where the second preset reference signal is a reference signal in the two preset reference signals.

In order to achieve the above object, an embodiment of the present invention further provides a transmission device for a reference signal, including:

the processing module is used for performing mobile processing on the subcarrier position of a first preset reference signal in the two preset reference signals when the resource positions of the two transmitted preset reference signals meet a preset resource collision condition to obtain a target subcarrier position of the first preset reference signal;

In order to achieve the above object, an embodiment of the present invention further provides a transmission device for a reference signal, including: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of transmission of reference signals as described above.

In order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the transmission method of the reference signal as described above.

The embodiment of the invention has the following beneficial effects:

according to the technical scheme of the embodiment of the invention, when the resource positions of two transmitted preset reference signals meet the preset resource collision condition, the subcarrier position of a first preset reference signal in the two preset reference signals is subjected to moving processing to obtain the target subcarrier position of the first preset reference signal; the target subcarrier position is a frequency domain position except a frequency domain position corresponding to a subcarrier of a second preset reference signal in a target physical resource block PRB where the first preset reference signal is located, so that resource collision is avoided when the first preset reference signal and the second preset reference signal are transmitted, the performance of each reference signal is improved, and the reliability of a communication link is effectively guaranteed.

Drawings

Fig. 1 is a first flowchart of a method for transmitting a reference signal according to an embodiment of the present invention;

fig. 2 is a second flowchart of a method for transmitting a reference signal according to an embodiment of the present invention;

FIG. 3A is a schematic diagram of a first position movement of a reference signal in a first implementation manner according to an embodiment of the disclosure;

FIG. 3B is a diagram illustrating a second position movement of a reference signal in a first implementation manner according to an embodiment of the disclosure;

fig. 3C is a schematic diagram illustrating a third position movement of a reference signal in a first implementation manner according to an embodiment of the disclosure;

fig. 3D is a schematic diagram illustrating a fourth position movement of a reference signal in a first implementation manner according to an embodiment of the disclosure;

FIG. 4A is a schematic diagram illustrating a first position movement of a reference signal in a second implementation manner according to an embodiment of the disclosure;

FIG. 4B is a diagram illustrating a second position movement of a reference signal in a second implementation manner according to the embodiment of the disclosure;

FIG. 4C is a schematic diagram illustrating a third position movement of a reference signal in a second implementation manner according to the embodiment of the disclosure;

fig. 4D is a schematic diagram illustrating a fourth position movement of a reference signal in a second implementation manner according to the embodiment of the disclosure;

FIG. 5A is a diagram illustrating a first position movement of a reference signal in a third implementation manner according to an embodiment of the disclosure;

FIG. 5B is a diagram illustrating a second position movement of a reference signal in a third implementation manner according to an embodiment of the disclosure;

fig. 5C is a schematic diagram illustrating a third position movement of a reference signal in a third implementation manner according to the embodiment of the disclosure;

fig. 5D is a diagram illustrating a fourth position movement of a reference signal in a third implementation manner according to the embodiment of the disclosure;

fig. 6 is a third flowchart of a method for transmitting a reference signal according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a first module of a device for transmitting reference signals according to an embodiment of the present invention;

fig. 8 is a schematic diagram of a second module of the apparatus for transmitting a reference signal according to the embodiment of the present invention;

fig. 9 is a block diagram of a reference signal transmission apparatus according to an embodiment of the present invention;

fig. 10 is a block diagram of a terminal as a reference signal transmission device according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings.

The embodiment of the invention provides a transmission method and transmission equipment of reference signals, aiming at the problem that when two reference signals are in resource collision, one of the collided reference signals is generally punched, so that the function of the reference signal cannot be realized and the communication performance is influenced.

As shown in fig. 1, a transmission method of a reference signal according to an embodiment of the present invention is applied to a sending end, and the transmission method includes:

step 101: when the resource positions of two transmitted preset reference signals meet a preset resource collision condition, carrying out mobile processing on the subcarrier position of a first preset reference signal in the two preset reference signals to obtain a target subcarrier position of the first preset reference signal; the target subcarrier position is a frequency domain position in a target physical resource block PRB where the first preset reference signal is located, except for a frequency domain position corresponding to a subcarrier of a second preset reference signal, where the second preset reference signal is a reference signal in the two preset reference signals.

The preset resource collision condition may specifically be that subcarriers occupied by two preset reference signals overlap, and the first preset reference signal and the second preset reference signal may be a PTRS and a CSI-RS, respectively.

The target subcarrier position comprises a subcarrier position of the target reference signal in a preset PRB of a preset PRB unit; wherein the preset PRB unit comprises at least one PRB. If the PRB unit includes 4 PRBs, the target resource locations may be specifically subcarrier locations in a second PRB and a fourth PRB of the PRB unit.

According to the transmission method of the reference signal, when the resource positions of the two transmitted preset reference signals meet the preset resource collision condition, the subcarrier position of any one of the two preset reference signals is subjected to moving processing, so that collision of the transmission resources of the two preset reference signals is avoided, and the performance of each reference signal is effectively improved.

Further, as shown in fig. 2, the method for transmitting the reference signal further includes:

step 102: and sending the first preset reference signal at the position of the target subcarrier.

The sending end comprises a base station and a terminal, when the sending end is the base station, the base station sends the first preset reference signal to the terminal at the target subcarrier position, the terminal receives the first preset reference signal sent by the base station at the target subcarrier position, when the sending end is the terminal, the terminal sends the first preset reference signal to the base station at the target subcarrier position, and the base station receives the first preset reference signal sent by the terminal at the target subcarrier position.

The target subcarrier position is a frequency domain position except a frequency domain position corresponding to a subcarrier of the second preset reference signal in a target physical resource block PRB where the first preset reference signal is located, so that the first preset reference signal is sent at the target subcarrier position, and collision of transmission resources of the two preset reference signals is avoided.

Further, in an embodiment of the present invention, the first predetermined reference signal is a reference signal transmitted on a first port in a port group of a third predetermined reference signal.

The first predetermined reference signal is specifically a PTRS, and the third predetermined reference signal is specifically a DMRS. Since DMRS ports in one demodulation reference signal port group are quasi-co-located (QCL), and phase noise of corresponding data streams is the same, one DMRS port group may share one PTRS port. In general, the PTRS may be transmitted on one of the DMRS ports in the group of DMRS ports.

Based on this, as a first optional implementation manner, in step 101, the step of performing moving processing on the subcarrier position of the first preset reference signal in the two preset reference signals to obtain the target subcarrier position of the first preset reference signal includes:

selecting a first subcarrier set except the subcarriers of the second preset reference signal from the subcarriers where the first port is located, wherein the first subcarrier set comprises at least one subcarrier; and obtaining the target subcarrier position of the first preset reference signal according to the first subcarrier set.

Furthermore, in the first subcarrier set, a frequency domain position corresponding to a subcarrier with a smallest difference between the subcarrier index number and the source subcarrier index number of the first preset reference signal is selected as the target subcarrier position.

Assuming that the index number of the source subcarrier of the first preset reference signal is 2, the first subcarrier set includes subcarrier 1 and subcarrier 4, and at this time, the frequency domain position corresponding to subcarrier 1 is selected as the target subcarrier position.

Or, in the first subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number smaller than the source subcarrier index number of the first preset reference signal and with a smallest difference with the source subcarrier index number of the first preset reference signal as the target subcarrier position.

Assuming that the index number of the source subcarrier of the first preset reference signal is 3, the first subcarrier set includes subcarrier 0, subcarrier 1 and subcarrier 4, and at this time, the frequency domain position corresponding to subcarrier 1 is selected as the target subcarrier position.

Or, in the first subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number greater than the source subcarrier index number of the first preset reference signal and with a smallest difference from the source subcarrier index number of the first preset reference signal as the target subcarrier position.

Assuming that the index number of the source subcarrier of the first preset reference signal is 3, the first subcarrier set includes subcarrier 0, subcarrier 1, subcarrier 4 and subcarrier 6, and at this time, the frequency domain position corresponding to subcarrier 4 is selected as the target subcarrier position.

Or, in the first subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a largest subcarrier index number as the target subcarrier position;

or, in the first subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a minimum subcarrier index number as the target subcarrier position.

The following describes the first implementation manner with reference to a specific application scenario.

Assuming that the first pre-set reference signal is a PTRS (corresponding to one DMRS port group and transmitted on a first port in the DMRS port group), the second pre-set reference signal is a CSI-RS. In order to avoid resource collision, as shown in fig. 3A, the subcarriers of the PTRS are moved to the subcarriers whose index numbers in the first port in the PRB are greater than the index numbers of the atomic carriers of the PTRS and whose difference from the index numbers of the atomic carriers of the PTRS is the smallest. As shown in fig. 3B, the subcarriers of the PTRS are shifted to the subcarriers whose index numbers in the first port in the PRB are smaller than the index number of the atomic carrier of the PTRS and whose difference from the index number of the atomic carrier of the PTRS is the smallest. As shown in fig. 3C, the subcarriers of the PTRS are shifted to the subcarriers with the largest index number in the first port within the PRB. As shown in fig. 3D, the subcarriers of the PTRS are shifted to the subcarriers with the smallest index number in the first port within the PRB.

As a second optional implementation manner, in step 101, the moving the subcarrier position of the first preset reference signal in the two preset reference signals to obtain the target subcarrier position of the first preset reference signal includes:

selecting a frequency domain position corresponding to a subcarrier from a second subcarrier set where a second port in the port group of the third preset reference signal is located, as the target subcarrier position;

wherein a frequency domain position corresponding to each subcarrier in the second subcarrier set is different from a frequency domain position corresponding to a subcarrier of the second preset reference signal.

Further, the step of selecting a frequency domain position corresponding to one subcarrier from the second subcarrier set where the second port in the port group of the third preset reference signal is located as the target subcarrier position includes:

selecting a frequency domain position corresponding to a subcarrier with the smallest difference between a subcarrier index number and a source subcarrier index number of the first preset reference signal from the second subcarrier set as the target subcarrier position;

or, in the second subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number smaller than the source subcarrier index number of the first preset reference signal and with the smallest difference with the source subcarrier index number of the first preset reference signal as the target subcarrier position;

or, in the second subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number greater than the source subcarrier index number of the first preset reference signal and a subcarrier with a minimum difference with the source subcarrier index number of the first preset reference signal as the target subcarrier position;

or, in the second subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a largest subcarrier index number as the target subcarrier position;

or, in the second subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a minimum subcarrier index number as the target subcarrier position.

Furthermore, the second port is a port with the smallest difference between the port number of the third preset reference signal in the port group and the port number of the first port;

or the second port is a port in the port group of the third preset reference signal, the port number of which is smaller than the port number of the first port and has the smallest difference with the port number of the first port;

or the second port is a port in the port group of the third preset reference signal, the port number of which is greater than the port number of the first port and has the smallest difference with the port number of the first port;

or the second port is a port with the largest port number in the port group of the third preset reference signal;

or the second port is a port with the smallest port number in the port group of the third preset reference signal.

The second implementation is described below with reference to specific application scenarios.

Assuming that the first pre-set reference signal is a PTRS (corresponding to one DMRS port group and transmitted on a first port in the DMRS port group), the second pre-set reference signal is a CSI-RS. In order to avoid resource collision, as shown in fig. 4A, the subcarriers of the PTRS are shifted to the subcarriers whose index numbers are greater than the index number of the atomic carrier of the PTRS and whose difference from the index number of the atomic carrier of the PTRS is the smallest in the second port within the PRB. As shown in fig. 4B, the subcarriers of the PTRS are shifted to the subcarriers whose index numbers in the second port in the PRB are smaller than the index number of the atomic carrier of the PTRS and whose difference from the index number of the atomic carrier of the PTRS is the smallest. As shown in fig. 4C, the subcarriers of the PTRS are shifted to the subcarriers with the largest index number in the second port within the PRB. As shown in fig. 4D, the subcarriers of the PTRS are shifted to the subcarriers with the smallest index number in the second port within the PRB.

As a third optional implementation manner, in step 101, the moving the subcarrier position of the first preset reference signal in the two preset reference signals to obtain the target subcarrier position of the first preset reference signal includes:

selecting a third subcarrier set except subcarriers where all ports of the third preset reference signal are located in a target PRB, wherein the third subcarrier set comprises at least one subcarrier;

and determining the position of the target subcarrier of the first preset reference signal according to the third subcarrier set.

Wherein a frequency domain position corresponding to each subcarrier in the third subcarrier set is different from a frequency domain position corresponding to a subcarrier of the second preset reference signal.

Furthermore, in the third subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number having a smallest difference with a source subcarrier index number of the first preset reference signal as the target subcarrier position;

or, in the third subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number smaller than the source subcarrier index number of the first preset reference signal and with the smallest difference with the source subcarrier index number of the first preset reference signal as the target subcarrier position;

or, in the third subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number greater than the source subcarrier index number of the first preset reference signal and a subcarrier with a minimum difference with the source subcarrier index number of the first preset reference signal as the target subcarrier position;

or, in the third subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a largest subcarrier index number as the target subcarrier position;

or, in the third subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a minimum subcarrier index number as the target subcarrier position.

The third implementation manner is described below with reference to specific application scenarios.

Assuming that the first pre-set reference signal is a PTRS (corresponding to one DMRS port group and transmitted on a first port in the DMRS port group), the second pre-set reference signal is a CSI-RS. In order to avoid resource collision, as shown in fig. 5A, the subcarriers of the PTRS are moved to the subcarriers with index numbers greater than the index number of the atomic carrier of the PTRS and with the smallest difference from the index number of the atomic carrier of the PTRS in the third set of subcarriers. As shown in fig. 5B, the subcarriers of the PTRS are shifted to the subcarriers with index numbers smaller than the index number of the atomic carrier of the PTRS and the smallest difference from the index number of the atomic carrier of the PTRS in the third set of subcarriers. As shown in fig. 5C, the subcarriers of the PTRS are shifted to the subcarriers with the largest index number in the third subcarrier set. As shown in fig. 5D, the subcarriers of the PTRS are shifted to the subcarriers with the smallest index number in the third set of subcarriers.

Preferably, in order to avoid resource collision in the embodiment of the present invention, the position of the target subcarrier may be determined by combining the three implementation manners, and the order of executing the three implementation manners is variable, as shown in fig. 6, which may specifically include:

step 601: and judging whether the PTRS and the CSI-RS have resource collision or not.

Step 602: and if the resource collision happens, judging whether the CSI-RS occupies all subcarriers in the current PRB.

Step 603: and if the CSI-RS occupies all subcarriers in the current PRB, perforating PTRS symbols on the resource particles colliding with the CSI-RS.

Step 604: and if the CSI-RS does not occupy all subcarriers in the current PRB, judging whether subcarriers which do not collide with the subcarriers of the CSI-RS exist in the subcarriers of the first DMTS port for transmitting the PTRS.

Step 605: and if the subcarriers which do not collide with the subcarriers of the CSI-RS exist in the subcarriers of the first DMTS port, moving the subcarriers of the PTRS to the subcarriers which do not collide with the subcarriers of the CSI-RS in the subcarriers of the first DMTS port.

Step 606: and if the subcarriers of the first DMTS port do not have the subcarriers which do not collide with the subcarriers of the CSI-RS, judging whether a second DMRS port exists in the DMRS port group or not, wherein the subcarrier where the second DMRS port exists does not collide with the subcarriers of the CSI-RS.

Step 607: and if the second DMRS port exists, moving the subcarriers of the PTRS to subcarriers which do not collide with the subcarriers of the CSI-RS in the subcarriers of the second DMTS port.

Step 608: and if the second DMRS port does not exist, moving the subcarriers of the PTRS to subcarriers except the subcarriers occupied by all the ports of the DMRS.

In the method for transmitting the reference signal of the embodiment of the present invention, when the resource positions of two transmitted preset reference signals satisfy a preset resource collision condition, the subcarrier position of a first preset reference signal in the two preset reference signals is subjected to a moving process to obtain a target subcarrier position of the first preset reference signal; the target subcarrier position is a frequency domain position except a frequency domain position corresponding to a subcarrier of a second preset reference signal in a target physical resource block PRB where the first preset reference signal is located, so that resource collision is avoided when the first preset reference signal and the second preset reference signal are transmitted, the performance of each reference signal is improved, and the reliability of a communication link is effectively guaranteed.

Further, the method for transmitting a reference signal according to the embodiment of the present invention further includes:

and indicating the position of the target subcarrier of the first preset reference signal to a receiving end in an implicit or explicit mode.

When the target subcarrier position of the first preset reference signal is indicated to the receiving end in an explicit manner, the explicit manner includes:

indicating the position of the target subcarrier of the first preset reference signal to the receiving end through the configuration information of the first preset reference signal;

or, the target subcarrier position of the first preset reference signal is indicated to the receiving end through a preset message;

wherein the preset message comprises: at least one of physical layer signaling, media access control, MAC, layer signaling, and radio resource control, RRC, higher layer signaling.

When the target subcarrier position of the first preset reference signal is indicated to the receiving end in an implicit mode, the implicit mode includes protocol agreement.

In a specific embodiment of the present invention, when the sending end is a base station, the base station may determine a target subcarrier target of a first preset reference signal according to a protocol convention, and send the first preset reference signal at a target subcarrier position, and the terminal receives the first preset reference signal at the target subcarrier position according to the protocol convention. Or the base station sends a first preset reference signal at the target subcarrier position, and indicates the target subcarrier position to the terminal through the preset message, so that the terminal determines the target subcarrier position according to the indication of the base station and receives the first preset reference signal at the target subcarrier position.

When the sending terminal is a terminal, the terminal can determine a target subcarrier target of the first preset reference signal according to protocol convention, and send the first preset reference signal at the target subcarrier position, and the base station receives the first preset reference signal at the target subcarrier position according to protocol convention. Or the terminal sends a first preset reference signal at the target subcarrier position, and indicates the target subcarrier position to the base station through the preset message, so that the base station determines the target subcarrier position according to the indication of the terminal and receives the first preset reference signal at the target subcarrier position.

As shown in fig. 7, an embodiment of the present invention further provides a reference signal transmission device, including:

a processing module 701, configured to perform mobile processing on a subcarrier position of a first preset reference signal in two transmitted preset reference signals when resource positions of the two preset reference signals meet a preset resource collision condition, so as to obtain a target subcarrier position of the first preset reference signal;

As shown in fig. 8, the transmission device of the reference signal according to the embodiment of the present invention further includes:

a sending module 702, configured to send the first preset reference signal at the target subcarrier position.

In the transmission device of the reference signal according to the embodiment of the present invention, the first preset reference signal is a reference signal transmitted through a first port in a port group of a third preset reference signal.

In the transmission device of the reference signal according to the embodiment of the present invention, the processing module 701 includes:

a first selecting submodule 7011, configured to select, from subcarriers where the first port is located, a first subcarrier set that includes at least one subcarrier except for subcarriers of the second preset reference signal;

a first determining submodule 7012, configured to obtain a target subcarrier position of the first preset reference signal according to the first subcarrier set.

In the transmission device of the reference signal according to the embodiment of the present invention, the first determining submodule 7012 is configured to select, as the target subcarrier position, a frequency domain position corresponding to a subcarrier with a smallest difference between a subcarrier index number and a source subcarrier index number of the first preset reference signal in the first subcarrier set;

or, the frequency domain position corresponding to the subcarrier with the subcarrier index number smaller than the source subcarrier index number of the first preset reference signal and the smallest difference with the source subcarrier index number of the first preset reference signal is selected as the target subcarrier position in the first subcarrier set;

or, the frequency domain position corresponding to the subcarrier with the index number greater than the index number of the source subcarrier of the first preset reference signal and the smallest difference with the index number of the source subcarrier of the first preset reference signal is selected as the target subcarrier position in the first subcarrier set;

or, the frequency domain position corresponding to the subcarrier with the largest subcarrier index number is selected from the first subcarrier set as the target subcarrier position;

or, the method is configured to select, in the first subcarrier set, a frequency domain position corresponding to a subcarrier with a smallest subcarrier index number as the target subcarrier position.

In the transmission device of the reference signal according to the embodiment of the present invention, the processing module 701 is configured to select a frequency domain position corresponding to a subcarrier from a second subcarrier set where a second port in the port group of the third preset reference signal is located, and use the frequency domain position as the target subcarrier position;

In the transmission device of the reference signal according to the embodiment of the present invention, the second port is a port having a smallest difference between a port number in the port group of the third preset reference signal and a port number of the first port;

a second selecting submodule 7013, configured to select, in a target PRB, a third subcarrier set that includes at least one subcarrier except subcarriers where all ports of the third preset reference signal are located;

a second determining submodule 7014, configured to determine, according to the third subcarrier set, a target subcarrier position of the first preset reference signal.

In the transmission device of the reference signal according to the embodiment of the present invention, the second determining submodule 7014 is configured to select, as the target subcarrier position, a frequency domain position corresponding to a subcarrier with a smallest difference between a subcarrier index number and a source subcarrier index number of the first preset reference signal in the third subcarrier set;

or, the frequency domain position corresponding to the subcarrier with the subcarrier index number smaller than the source subcarrier index number of the first preset reference signal and the smallest difference with the source subcarrier index number of the first preset reference signal is selected as the target subcarrier position in the third subcarrier set;

or, the frequency domain position corresponding to the subcarrier with the index number greater than the index number of the source subcarrier of the first preset reference signal and the smallest difference from the index number of the source subcarrier of the first preset reference signal is selected as the target subcarrier position in the third subcarrier set;

or, the frequency domain position corresponding to the subcarrier with the largest subcarrier index number is selected from the third subcarrier set as the target subcarrier position;

or, the method is configured to select, in the third subcarrier set, a frequency domain position corresponding to a subcarrier with a smallest subcarrier index number as the target subcarrier position.

The transmission device of the reference signal of the embodiment of the present invention further includes:

an indicating module 703 is configured to indicate, in an implicit or explicit manner, a target subcarrier position of the first preset reference signal to a receiving end.

In the transmission device of the reference signal according to the embodiment of the present invention, when the indicating module 703 indicates the target subcarrier position of the first preset reference signal to the receiving end in an explicit manner, the explicit manner includes:

In the transmission device of the reference signal according to the embodiment of the present invention, when the indicating module 703 indicates the target subcarrier position of the first preset reference signal to the receiving end in an implicit manner, the implicit manner includes protocol agreement.

According to the transmission equipment of the reference signal, when the resource positions of two transmitted preset reference signals meet the preset resource collision condition, the subcarrier position of a first preset reference signal in the two preset reference signals is subjected to moving processing, and the target subcarrier position of the first preset reference signal is obtained; the target subcarrier position is a frequency domain position except a frequency domain position corresponding to a subcarrier of a second preset reference signal in a target physical resource block PRB where the first preset reference signal is located, so that resource collision is avoided when the first preset reference signal and the second preset reference signal are transmitted, the performance of each reference signal is improved, and the reliability of a communication link is effectively guaranteed.

It should be noted that the embodiment of the transmission apparatus is a transmission apparatus corresponding to the transmission method of the reference signal applied above, and all the implementations of the above embodiments are applicable to the embodiment of the transmission apparatus, and the same technical effects as those of the embodiment of the transmission apparatus can also be achieved.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process in the foregoing reference signal transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

When the transmitting end of the embodiment of the present invention is specifically a base station, as shown in fig. 9, the base station 900 includes: a processor 901, a transceiver 902, a memory 903, and a bus interface, wherein:

a processor 901 for reading the program in the memory 903, and executing the following processes:

In fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 901 and various circuits of memory represented by memory 903 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 902 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium.

The processor 901 is responsible for managing a bus architecture and general processing, and the memory 903 may store data used by the processor 901 in performing operations.

Optionally, the processor 901 reads the program in the memory 903, and is further configured to execute:

the first pre-set reference signal is transmitted at the target subcarrier location via the transceiver 902.

Optionally, the first preset reference signal is a reference signal transmitted on a first port in a port group of a third preset reference signal.

selecting a first subcarrier set except the subcarriers of the second preset reference signal from the subcarriers where the first port is located, wherein the first subcarrier set comprises at least one subcarrier;

and obtaining the target subcarrier position of the first preset reference signal according to the first subcarrier set.

selecting a frequency domain position corresponding to a subcarrier with the smallest difference between a subcarrier index number and a source subcarrier index number of the first preset reference signal from the first subcarrier set as the target subcarrier position;

or, in the first subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number smaller than a source subcarrier index number of the first preset reference signal and a smallest difference with the source subcarrier index number of the first preset reference signal as the target subcarrier position;

or, in the first subcarrier set, selecting a frequency domain position corresponding to a subcarrier with a subcarrier index number greater than a source subcarrier index number of the first preset reference signal and a smallest difference with the source subcarrier index number of the first preset reference signal as the target subcarrier position;

Optionally, the second port is a port with a smallest difference between a port number of the third preset reference signal in the port group and a port number of the first port;

selecting a frequency domain position corresponding to a subcarrier with the smallest difference between the subcarrier index number and the source subcarrier index number of the first preset reference signal from the third subcarrier set as the target subcarrier position;

Optionally, when the target subcarrier position of the first preset reference signal is indicated to the receiving end in an explicit manner, the explicit manner includes:

Optionally, when the target subcarrier position of the first preset reference signal is indicated to the receiving end in an implicit manner, the implicit manner includes protocol agreement.

When the transmitting end of the embodiment of the present invention is specifically a terminal, as shown in fig. 10, the terminal 1000 includes: at least one processor 1001, memory 1002, at least one network interface 1004, and a user interface 1003. The various components in terminal 1000 are coupled together by a bus system 1005. It is understood that bus system 1005 is used to enable communications among the components connected. The bus system 1005 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. But for the sake of clarity the various busses are labeled in figure 10 as the bus system 1005.

The user interface 1003 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, track ball, touch pad, or touch screen, etc.).

It is to be understood that the memory 1002 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1002 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1002 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 10021 and applications 10022.

The operating system 10021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 10022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. The program implementing the method according to the embodiment of the present invention may be included in the application program 10022.

In this embodiment of the present invention, the terminal 1000 further includes: a computer program stored on the memory 1002 and executable on the processor 1001, in particular a computer control program in the application 10022, which computer program, when executed by the processor 1001, performs the steps of:

The method disclosed by the embodiment of the invention can be applied to the processor 1001 or can be implemented by the processor 1001. The processor 1001 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1001. The Processor 1001 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. 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 connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash memory, rom, prom, or eprom, registers, among other computer-readable storage media known in the art. The computer readable storage medium is located in the memory 1002, and the processor 1001 reads the information in the memory 1002 and performs the steps of the method in combination with the hardware. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 1001, performs the steps described below.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Optionally, the computer program when executed by the processor 1001 implements:

and sending the first preset reference signal at the position of the target subcarrier.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or 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 embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

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

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.

Claims

1. A method for transmitting a reference signal, comprising:

when the resource positions of two transmitted preset reference signals meet a preset resource collision condition, performing mobile processing on the subcarrier position of a first preset reference signal in the two preset reference signals to obtain a target subcarrier position of the first preset reference signal, wherein the first preset reference signal is a reference signal transmitted on a first port in a port group of a third preset reference signal;

the target subcarrier position is a frequency domain position in a target physical resource block PRB where the first preset reference signal is located, except for a frequency domain position corresponding to a subcarrier of a second preset reference signal, and the second preset reference signal is a reference signal in the two preset reference signals;

the method comprises the following steps of performing mobile processing on the subcarrier position of a first preset reference signal in the two preset reference signals to obtain the target subcarrier position of the first preset reference signal, wherein the mobile processing comprises the following steps:

determining a target subcarrier position of the first preset reference signal according to the third subcarrier set;

wherein the frequency domain position corresponding to each subcarrier in the third subcarrier set is different from the frequency domain position corresponding to the subcarrier of the second preset reference signal;

the first preset reference signal is a phase tracking reference signal PTRS, the second preset reference signal is a channel state information reference signal CSI-RS, and the third preset reference signal is a demodulation reference signal DMRS.

2. The method for transmitting the reference signal according to claim 1, further comprising:

3. The method according to claim 1, wherein the step of determining the target subcarrier position of the first predetermined reference signal according to the third subcarrier set comprises:

4. The method for transmitting the reference signal according to claim 1, further comprising:

5. The method according to claim 4, wherein when the target subcarrier position of the first pre-determined reference signal is indicated to the receiving end in an explicit manner, the explicit manner includes:

6. The method according to claim 4, wherein when the target subcarrier position of the first predetermined reference signal is implicitly indicated to the receiving end, the implicit mode comprises protocol agreement.

7. A transmission apparatus of a reference signal, comprising:

the processing module is used for performing mobile processing on a subcarrier position of a first preset reference signal in the two preset reference signals when resource positions of the two transmitted preset reference signals meet a preset resource collision condition to obtain a target subcarrier position of the first preset reference signal, wherein the first preset reference signal is a reference signal transmitted on a first port in a port group of a third preset reference signal;

the processing module comprises:

a second selection submodule, configured to select, in a target PRB, a third subcarrier set that includes at least one subcarrier except subcarriers where all ports of the third preset reference signal are located;

a second determining submodule, configured to determine a target subcarrier position of the first preset reference signal according to the third subcarrier set;

8. The apparatus for transmitting reference signals according to claim 7, further comprising:

a sending module, configured to send the first preset reference signal at the target subcarrier position.

9. The apparatus for transmitting reference signals according to claim 7, wherein the second determining submodule is configured to select, as the target subcarrier position, a frequency domain position corresponding to a subcarrier with a smallest difference between a subcarrier index number and a source subcarrier index number of the first preset reference signal in the third subcarrier set;

10. The apparatus for transmitting reference signals according to claim 7, further comprising:

and the indicating module is used for indicating the position of the target subcarrier of the first preset reference signal to a receiving end in an implicit or explicit mode.

11. The apparatus for transmitting reference signals according to claim 10, wherein when the indicating module indicates the target subcarrier position of the first predetermined reference signal to the receiving end in an explicit manner, the explicit manner includes:

12. The apparatus for transmitting reference signals according to claim 10, wherein when the indicating module indicates the target subcarrier position of the first predetermined reference signal to the receiving end in an implicit manner, the implicit manner includes protocol convention.

13. A transmission apparatus of a reference signal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method of transmission of a reference signal according to any one of claims 1 to 6.

14. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method for transmission of reference signals according to any one of claims 1 to 6.