WO2020239023A1

WO2020239023A1 - Transmitting power determination method, information transmission method, and communication device

Info

Publication number: WO2020239023A1
Application number: PCT/CN2020/092914
Authority: WO
Inventors: 任晓涛; 赵锐
Original assignee: 大唐移动通信设备有限公司
Priority date: 2019-05-31
Filing date: 2020-05-28
Publication date: 2020-12-03
Also published as: CN112020131A; CN112020131B

Abstract

Provided are a transmitting power determination method, an information transmission method and a communication device. The transmitting power determination method comprises: acquiring first transmitting power related information of a first reference signal sent by a second communication device; determining a sidelink path loss according to the first transmitting power related information, wherein the sidelink path loss is a path loss of a sidelink between a first communication device and the second communication device that sends the first reference signal or a third communication device; and determining the sidelink transmitting power of the first communication device according to the sidelink path loss.

Description

Transmission power determination method, information transmission method and communication equipment

Cross references to related applications

This application claims the priority of Chinese Patent Application No. 201910472284.7 filed in China on May 31, 2019, the entire content of which is incorporated herein by reference.

Technical field

The present disclosure relates to the technical field of communication applications, and in particular to a method for determining transmission power, a method for information transmission, and a communication device.

Background technique

In the related art, in order to ensure the communication quality of its Sidelink communication link and reduce its interference to the uplink air interface communication link when a terminal is performing sidelink communication through a through link, its transmission power cannot be too small or too large. It is necessary to control the transmission power of the terminal, and the commonly used power control scheme is a method to partially compensate the path loss. In the current technical solution, the sidelink communication transmission power is the minimum value of the Sidelink communication link path loss and the uplink air interface communication link path loss as the integrated path loss, and then the transmission power is determined after partial compensation based on the integrated path loss. The path loss of the uplink air interface communication link can be obtained through the uplink reference signal measurement, but the related art does not provide a relevant solution for how to calculate the path loss of the direct communication link.

Summary of the invention

The purpose of the present disclosure is to provide a method for determining a transmission power, a method for information transmission, and a communication device, so as to solve the problem that the related art does not provide a solution for calculating the path loss of a through communication link.

In order to achieve the above objective, the present disclosure provides a method for determining transmission power, which is applied to a first communication device, and the method includes:

Acquiring first transmit power related information of the first reference signal sent by the second communication device;

Determine the through link path loss according to the information related to the first transmit power. The through link path loss is the difference between the first communication device and the second communication device or the third communication device that sends the first reference signal. The path loss of the through link;

Determine the through link transmit power of the first communication device according to the through link path loss.

Wherein, before determining the path loss of the through link according to the first transmit power related information, the method further includes:

Receiving the first reference signal sent by the second communication device or the third communication device.

Wherein, the determining the path loss of the through link according to the first transmission power related information includes:

Determine the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power.

Wherein, the first transmit power related information is the transmit power of the first reference signal or a correlation factor of the transmit power of the first reference signal.

Wherein, the correlation factor of the transmission power of the first reference signal is a direct link path loss compensation factor.

Wherein, the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is one;

The determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

The path loss of the through link is determined by the following formula;

Among them, PL _SL represents the path loss of the through link,

Represents the transmit power of the first reference signal, and RSRP _SL represents the received power of the first reference signal.

Wherein, the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is at least two;

The path loss of the through link is determined by the following formula;

PL _SL =max(PL _SL1 , PL _SL2 ,...PL _SLN );

Among them, PL _SLi represents the path loss of the i-th through link

Represents the transmit power of the i-th first reference signal, RSRP _SLi represents the received power of the i-th first reference signal, PL _SL represents the path loss of the through link, i=[1,2,...,N], N is the result The number of the first reference signal, N≥2, and i and N are both positive integers.

Wherein, the determining the through link transmit power of the first communication device according to the through link path loss includes:

Determine the transmit power of the through link of the first communication device by using the following formula;

PL=min(a*PL _SL , b*PL _UL ); P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Among them, PL represents the comprehensive path loss, P _OUTB represents the transmission power of the through link of the first communication device, P _max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P ₀ represents the corresponding received power when the through link reaches the preset communication quality, a represents the first path loss compensation factor, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.

Wherein, the first transmit power related information is a correlation factor h of the transmit power of the first reference signal, 0<h≦1, and the number of acquired first reference signals is one;

Determine the path loss of the through link by the following formula:

PL _SL = h*(P _max -RSRP _SL );

Wherein, P _max represents the maximum transmit power of the first communication device, RSRP _SL represents the received power of the first reference signal, and PL _SL represents the through link path loss.

Wherein, the first transmit power related information is a correlation factor h of the transmit power of the first reference signal, h≥1, and the number of acquired first reference signals is one;

Determine the path loss of the through link by the following formula:

PL _SL = (P _max -RSRP _SL )/h;

P _max represents the maximum transmit power of the first communication device, RSRP _SL represents the received power of the first reference signal, and PL _SL represents the through link path loss.

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Among them, PL represents the comprehensive path loss, P _OUTB represents the transmission power of the through link of the first communication device, P _max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P ₀ represents the corresponding received power when the through link reaches the preset communication quality, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.

Wherein, the first transmission power related information is a correlation factor of the first reference signal transmission power, and the number of acquired first reference signals is at least two;

The determining the path loss of the through link according to the transmission power related information includes:

The path loss of the through link is determined by the following formula;

PL _SLi =h _i *(P _max -RSRP _SLi ); PL _SL =max(PL _SL1 , PL _SL2 ,...PL _SLN );

Where PL _SLi represents the path loss of the i-th through link, RSRP _SLi represents the received power of the i-th first reference signal, P _max represents the maximum transmit power of the first communication device, and h _i represents the i-th first reference signal Correlation factor of signal transmission power, 0<h _i ≤1, PL _SL represents the path loss of the through link, i=[1,2,...,N], N is the number of the first reference signal, N≥2, And i and N are both positive integers.

h=max(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Determine the path loss of the through link by the following formula:

PL _SLi = (P _max- RSRP _SLi )/h _i ; PL _SL = max(PL _SL1 , PL _SL2 ,...PL _SLN );

Where PL _SLi represents the path loss of the i-th through link, RSRP _SLi represents the received power of the i-th first reference signal, P _max represents the maximum transmit power of the first communication device, and h _i represents the i-th first reference signal Correlation factor of signal transmission power, h _i ≥1, PL _SL represents the path loss of the through link, i=[1,2,...,N], N is the number of the first reference signal, N≥2, and i Both and N are positive integers.

h=1/min(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Wherein, the first reference signal includes at least one of the following:

Direct link primary synchronization signal S-PSS, direct link secondary synchronization signal S-SSS, physical direct link broadcast channel PSBCH, demodulation reference signal DMRS, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS , Physical direct link control channel PSCCH, physical direct link shared channel PSSCH, physical direct link feedback channel PSFCH, preset reference signals and preset physical channels.

In order to achieve the foregoing objective, embodiments of the present disclosure also provide an information transmission method applied to a second communication device, and the method includes:

Sending the first transmission power related information of the first reference signal to the first communication device, where the first transmission power related information is used by the first communication device to determine the through link path loss.

Wherein, the above-mentioned information transmission method also includes:

In a case where the second communication device is a terminal device, sending a first reference signal to the first communication device.

Wherein, the sending the first transmission power information of the first reference signal to the first communication device includes:

In the case where the second communication device is a terminal device, the first transmission power related information is sent on the physical direct link control channel PSCCH of the direct link through the direct link control information SCI, or, in the direct link In the above, the first transmission power related information is sent through radio resource control RRC signaling, or the first transmission power related information is sent on the PSBCH of the through link through the through link master information block SL-MIB.

Wherein, the first transmission power related information of the first reference signal sent to the first communication device includes:

In the case that the second communication device is a base station device, the first transmission power related information is sent on the PDCCH of the downlink air interface link through the downlink control information DCI, or on the physical broadcast channel PBCH of the downlink air interface link The first transmission power related information is sent through the master information block MIB, or the first transmission power related information is sent on the downlink air interface link through RRC signaling.

In order to achieve the foregoing objective, the embodiments of the present disclosure also provide a communication device. The communication device is a first communication device and includes: a transceiver, a memory, a processor, and a program stored in the memory and running on the processor. When the processor executes the program, the following steps are implemented:

Wherein, the processor is further configured to perform the following steps before determining the path loss of the through link according to the first transmit power related information:

Receiving the first reference signal sent by the second communication device or the third communication device through a transceiver.

Wherein, the step of, by the processor, determining the path loss of the through link according to the first transmit power related information includes:

The step of the processor executing the step of determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

The path loss of the through link is determined by the following formula;

Among them, PL _SL represents the path loss of the through link,

The path loss of the through link is determined by the following formula;

PL _SL =max(PL _SL1 , PL _SL2 ,...PL _SLN );

Among them, PL _SLi represents the path loss of the i-th through link

Wherein, the step of determining, by the processor, the through link transmission power of the first communication device according to the through link path loss includes:

Determine the path loss of the through link by the following formula:

PL _SL = h*(P _max -RSRP _SL );

Determine the path loss of the through link by the following formula:

PL _SL = (P _max -RSRP _SL )/h;

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

The step of determining, by the processor, the path loss of the through link according to the transmission power related information includes:

The path loss of the through link is determined by the following formula;

h=max(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Determine the path loss of the through link by the following formula:

h=1/min(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Wherein, the first reference signal includes at least one of the following:

In order to achieve the foregoing objective, the embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of the method for determining the transmission power as described above are implemented.

In order to achieve the above objective, the embodiments of the present disclosure also provide a communication device. The communication device is a second communication device and includes: a transceiver, a memory, a processor, and a device stored in the memory and running on the processor. A program, the processor implements the following steps when executing the program:

The transceiver is controlled to send the first transmission power related information of the first reference signal to the first communication device, where the first transmission power related information is used by the first communication device to determine the through link path loss.

Wherein, the processor is further configured to perform the following steps:

In a case where the second communication device is a terminal device, the first reference signal is sent to the first communication device.

Wherein, the step of the processor executing the first transmission power information of the first reference signal to the first communication device includes:

Wherein, the step of the processor executing the first transmission power related information of the first reference signal to the first communication device includes:

In order to achieve the foregoing objectives, embodiments of the present disclosure also provide a computer-readable storage medium on which a computer program is stored, and the computer program is executed by a processor to implement the steps of the information transmission method described above.

In order to achieve the foregoing objective, an embodiment of the present disclosure also provides a communication device, where the communication device is a first communication device and includes:

The first obtaining module is configured to obtain first transmission power related information of the first reference signal sent by the second communication device;

The first determining module is configured to determine the path loss of the through link according to the information related to the first transmit power, where the path loss of the through link is the first communication device and the second communication device sending the first reference signal or The path loss of the through link between the third communication device;

The second determining module is configured to determine the through link transmit power of the first communication device according to the through link path loss.

Wherein, the above-mentioned communication equipment also includes:

The receiving module is configured to receive the first reference signal sent by the second communication device or the third communication device before determining the path loss of the through link according to the first transmission power related information.

Wherein, the first determining module is configured to determine the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power.

The first sending module is configured to send first transmission power related information of a first reference signal to a first communication device, where the first transmission power related information is used by the first communication device to determine a through link path loss.

Wherein, the above-mentioned communication equipment also includes:

The second sending module is configured to send a first reference signal to the first communication device when the second communication device is a terminal device.

Wherein, the first sending module is configured to send the first transmission through the direct link control information SCI on the physical direct link control channel PSCCH of the direct link when the second communication device is a terminal device. Power-related information, or the first transmission power-related information is sent on the through link through radio resource control RRC signaling, or the first transmission power related information is sent on the PSBCH of the through link through the through link master information block SL-MIB First transmit power related information.

Wherein, the first sending module is configured to send the first transmission power related information through downlink control information DCI on the PDCCH of the downlink air interface link when the second communication device is a base station device, or The first transmission power related information is sent on the physical broadcast channel PBCH of the downlink air interface link through a master information block MIB, or the first transmission power related information is sent on the downlink air interface link through RRC signaling.

The embodiments of the present disclosure have the following beneficial effects:

According to the above technical solutions of the embodiments of the present disclosure, the first transmission power related information of the first reference signal sent by the second communication device is acquired; according to the first transmission power related information, the through link path loss is determined, and the through link The path loss is the path loss of the through link between the first communication device and the second or third communication device that sends the first reference signal; the first communication is determined according to the through link path loss The transmission power of the direct link of the device can reduce the interference in the direct link communication and at the same time reduce the power consumption of the transmitting end.

Description of the drawings

FIG. 1 is a schematic flowchart of a method for determining a transmission power according to an embodiment of the disclosure;

2 is a schematic diagram of first communication between a first communication device and a second communication device in an embodiment of the disclosure;

3 is a schematic diagram of second communication between a first communication device and a second communication device in an embodiment of the disclosure;

4 is a third schematic diagram of communication between a first communication device and a second communication device in an embodiment of the disclosure;

FIG. 5 is a fourth schematic diagram of communication between a first communication device and a second communication device in an embodiment of the disclosure;

6 is a schematic flowchart of an information transmission method according to an embodiment of the disclosure;

FIG. 7 is a structural block diagram of a first communication device or a second communication device according to an embodiment of the disclosure;

FIG. 8 is a schematic diagram of modules of a first communication device according to an embodiment of the disclosure;

9 is a structural block diagram of a second communication device according to an embodiment of the disclosure;

FIG. 10 is a schematic diagram of modules of a second communication device according to an embodiment of the disclosure.

Detailed ways

Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

The terms "first", "second", etc. in the specification and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein, for example, can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. In the specification and claims, "and/or" means at least one of the connected objects.

The following description provides examples and does not limit the scope, applicability, or configuration set forth in the claims. Changes may be made to the function and arrangement of the discussed elements without departing from the spirit and scope of the present disclosure. Various examples may omit, substitute, or add various procedures or components as appropriate. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

As shown in FIG. 1, an embodiment of the present disclosure provides a method for determining transmission power, which is applied to a first communication device, and the first communication device may be specifically a terminal device. The method includes:

Step 101: Acquire first transmission power related information of a first reference signal sent by a second communication device.

The second communication device may be a terminal device or a base station device. The first transmission power related information is the transmission power of the first reference signal or a correlation factor of the first reference signal transmission power, and the correlation factor of the first reference signal transmission power is a direct link path loss compensation factor. The number of the aforementioned first reference signal is at least one.

When the first transmit power related information is the transmit power of the first reference signal, the first transmit power related information is quantized and encoded with at least a first preset bit. Optionally, the first preset bit is 4 bits. The quantization and coding of the transmission power of the first reference signal by the first preset bit can ensure relatively accurate power information and low signaling overhead.

When the first transmit power related information is a correlation factor of the transmit power of the first reference signal, the correlation factor may be a partial path loss compensation factor when it is assumed that the first communication device transmits the first reference signal at the maximum power, and the first transmit The power-related information is quantized and encoded with at least a second preset bit. Optionally, the second preset bit is 2 bits. The second preset bit is used to encode the correlation factor of the first reference signal transmission power, which can ensure There is more accurate path loss compensation information, and lower signaling overhead can be ensured.

Each of the foregoing first reference signals includes at least one of the following:

The preset reference signal here may be other reference signals except S-PSS, S-SSS, DMRS, CSI-RS and PT-RS, and the preset physical channel may be other than PSBCH, PSCCH, PSSCH and PSFCH Physical channel.

Step 102: Determine the through link path loss based on the information related to the first transmit power, where the through link path loss is the first communication device and the second communication device or the third communication device that sends the first reference signal The path loss of the through link between.

Specifically, the through link path loss may be determined according to the received power of the first reference signal and the information related to the first transmit power.

Step 103: Determine the through link transmit power of the first communication device according to the through link path loss.

Here, a partial path compensation can be performed according to the above-mentioned through link path loss, and then the through link transmission power of the first communication device can be obtained.

According to the method for determining the transmission power of the embodiment of the present disclosure, the first transmission power related information of the first reference signal sent by the second communication device is obtained; the path loss of the through link is determined according to the first transmission power related information, and the through link is The path loss is the path loss of the through link between the first communication device and the second communication device or the third communication device that sends the first reference signal; according to the through link path loss, the first The direct link transmit power of the communication device can reduce interference in direct link communication and at the same time reduce the power consumption of the transmitting end.

Further, before determining the path loss of the through link according to the first transmission power related information, the method further includes:

Here, the second communication device or the third communication device respectively includes at least one terminal device, and each of the terminal devices sends a first reference signal.

Based on this, the foregoing determining the path loss of the through link according to the first transmit power related information includes:

Further, as a first optional implementation manner, the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is one;

The path loss of the through link is determined by the following formula;

Among them, PL _SL represents the path loss of the through link,

Further, as a second optional implementation manner, the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is at least two;

The path loss of the through link is determined by the following formula;

PL _SL =max(PL _SL1 , PL _SL2 ,...PL _SLN );

Among them, PL _SLi represents the path loss of the i-th through link

Based on the foregoing first optional implementation manner and the second optional implementation manner, the determining the through link transmit power of the first communication device according to the through link path loss includes:

As a third optional implementation manner, the first transmit power related information is a correlation factor h of the transmit power of the first reference signal, 0<h≦1, and the number of acquired first reference signals is one;

Determine the path loss of the through link by the following formula:

PL _SL = h*(P _max -RSRP _SL );

As a fourth optional implementation manner, the first transmit power related information is a correlation factor h of the transmit power of the first reference signal, h≥1, and the number of acquired first reference signals is one;

Determine the path loss of the through link by the following formula:

PL _SL = (P _max -RSRP _SL )/h;

Based on the foregoing third optional implementation manner and the fourth optional implementation manner, the determining the through link transmit power of the first communication device according to the through link path loss includes:

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

As a fifth optional implementation manner, the first transmit power related information is a correlation factor of the transmit power of the first reference signal, and the number of acquired first reference signals is at least two;

The path loss of the through link is determined by the following formula;

Based on the above-mentioned fifth optional implementation manner, the determining the direct link transmit power of the first communication device according to the direct link path loss includes:

h=max(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

As a sixth optional implementation manner, the power-related information is a correlation factor of the transmit power of the first reference signal, and the number of acquired first reference signals is at least two;

Determine the path loss of the through link by the following formula:

Based on the foregoing sixth optional implementation manner, the determining the direct link transmit power of the first communication device according to the direct link path loss includes:

h=1/min(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

The method for determining the transmission power of the present disclosure will be described below with reference to specific embodiments.

Embodiment 1: Unicast scenario.

As shown in FIG. 2, the first terminal 21 (first communication device) and the second terminal 22 (second communication device) communicate through a direct link, the first terminal 21 is the transmitting end, and the second terminal 22 is the receiving end, And the second terminal sends the first reference signal and the transmit power of the first reference signal to the first terminal.

Technical features of this embodiment:

The first transmit power related information includes the transmit power P _outA of the first reference signal, and the number of acquired first reference signals is one. The first terminal determines the through link path loss PL _SL according to the received received power RSRP _SL of the first reference signal and the transmit power P _{outA of the} first reference signal:

The first terminal can perform partial path loss compensation according to the calculated PL _SL :

The meaning of each symbol in the formula of this embodiment has been explained in the above description, and will not be repeated here.

In this embodiment, the second communication device directly informs the transmission power of the reference signal, which is simple and intuitive.

Embodiment 2: Unicast scenario.

As shown in FIG. 3, the third terminal 31 (the first communication device) and the fourth terminal 32 (the second communication device) communicate through a direct link, the third terminal 31 is the sending end, and the fourth terminal 32 is the receiving end. And the fourth terminal sends the first reference signal and the partial path loss compensation factor (the correlation factor h of the transmission power of the first reference signal) to the third terminal.

The feature of this embodiment: the first transmission power related information is the correlation factor h of the first reference signal transmission power, 0<h≦1, and the number of acquired first reference signals is one. The third terminal determines the through link path loss PL _SL according to the received power RSRP _SL and h of the first reference signal:

PL _SL = h*(P _max -RSRP _SL );

Here, the meaning of h is a partial path loss compensation factor when the third terminal is assumed to transmit the first reference signal with maximum power.

will

Substitution, the transmit power P _outA of the third terminal represented by h can be _obtained :

The third terminal can perform partial path loss compensation according to h:

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

In this embodiment, the transmission power of the first reference signal is not notified, but only a part of the path loss compensation factor h is notified, thereby significantly reducing the signaling overhead.

Embodiment 3: Unicast scenario.

The feature of this embodiment: the first transmission power related information is the correlation factor h of the first reference signal transmission power, h≥1, and the number of acquired first reference signals is one. The third terminal determines the through link path loss PL _SL according to the received power RSRP _SL and h of the first reference signal:

PL _SL = (P _max -RSRP _SL )/h;

Here, the meaning of h represents a partial path loss compensation factor when the third terminal is assumed to transmit the reference signal at the maximum power.

will

The third terminal can perform partial path loss compensation according to h:

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Embodiment 4: Multicast scene.

As shown in FIG. 4, the fifth terminal 41 and the sixth terminal 42 communicate through the through communication link 1, the fifth terminal 41 and the seventh terminal 43 communicate through the through communication link 2, and the fifth terminal 41 and the eighth terminal 44 communicate through the direct communication link 3. The sixth terminal 42, the seventh terminal 43, and the eighth terminal 44 respectively send the first reference signal and the first reference signal transmission power to the fifth terminal 41. In this multicast scenario, the fifth terminal is the first communication device, and the sixth terminal, the seventh terminal, and the eighth terminal are the second communication devices.

The feature of this embodiment: the power-related information includes the transmit power of multiple first reference signals from different devices, P _outA1 , P _outA2 , ..., P _outAN . The fifth terminal receives the received power RSRP _SL1 , RSRP _SL2 ..., RSRP _SLN from different devices and the transmit power of the first reference signal, P _outA1 , P _outA2 ,..., P _outAN , determine the path loss of multiple through links PL _SL1 , PL _SL2 , ..., PL _SLN :

PL _SL =max(PL _SL1 , PL _SL2 ,...PL _SLN );

The fifth terminal can perform partial path loss compensation according to the calculated PL _SL :

In this embodiment, the transmission power of multiple first reference signals of different devices is directly notified, which is simple and intuitive.

Embodiment 5: Multicast scene.

As shown in Figure 5, the ninth terminal 51 and the tenth terminal 52 communicate through the through communication link 1, the ninth terminal 51 and the eleventh terminal 53 communicate through the through communication link 2, and the ninth terminal 51 and the tenth terminal The two terminals 54 communicate through the through communication link 3. The tenth terminal 52, the eleventh terminal 53, and the twelfth terminal 54 respectively send the first reference signal and h to the fifth terminal 41. In this multicast scenario, the ninth terminal is the first communication device, and the tenth terminal, the eleventh terminal, and the twelfth terminal are the second communication devices.

The feature of this embodiment: the first transmit power related information includes correlation factors h ₁ , h ₂ ,..., h _N , 0<h _i ≤1, of multiple first reference signal transmit powers from different devices, The ninth terminal receives the received powers RSRP _SL1 , RSRP _SL2 , ..., RSRP _SLN and transmit power correlation factors h ₁ , h ₂ , ..., h _N of the multiple first reference signals received from different devices, Determine the path sub-loss PL _{SLi of the} through link:

The ninth terminal can perform partial path loss compensation according to h:

h=max(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

In this embodiment, the transmit power of the first reference signal is not notified, but only multiple partial path loss compensation factors h of different devices are notified, thereby significantly reducing signaling overhead.

Embodiment 6: Multicast scenario.

The feature of this embodiment: the first transmit power related information includes multiple correlation factors h ₁ , h ₂ , ..., h _N , h _i ≥1 of the transmit power of multiple first reference signals from different devices, ninth According to the received power RSRP _SL1 , RSRP _SL2 ,..., RSRP _SLN and the transmit power correlation factor h ₁ , h ₂ ,..., h _N of the received multiple first reference signals from different devices, the terminal determines the direct connection Link path sub-loss PL _SLi :

The ninth terminal can perform partial path loss compensation according to h:

h=1/min(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

In the method for determining the transmission power of the embodiment of the present disclosure, compared with related technologies, the transmitting end can determine the path loss of the through link according to the reference signal sent by the receiving end and related power information, so that when only the receiving end sends the reference signal, according to the receiving end The reference signal sent by the terminal is used to determine the through link path loss, and then the through link transmission power of the transmitting terminal is determined according to the through link path loss, thereby reducing interference in the through link communication and at the same time reducing the power consumption of the transmitting terminal.

As shown in FIG. 6, an embodiment of the present disclosure also provides an information transmission method, which is applied to a second communication device. The second communication device may be a terminal device or a base station device. The method includes:

Step 601: Send first transmission power related information of a first reference signal to a first communication device, where the first transmission power related information is used by the first communication device to determine a through link path loss.

The first transmission power related information is the transmission power of the first reference signal or a correlation factor of the first reference signal transmission power, and the correlation factor of the first reference signal transmission power is a direct link path loss compensation factor. The number of the aforementioned first reference signal is at least one.

In the information transmission method of the embodiment of the present disclosure, the first transmission power related information of the first reference signal is sent to the first communication device, so that the first communication device determines the through link path loss according to the first transmission power related information, and according to the The direct link path loss determines the transmit power of the direct link of the first communication device, thereby reducing interference in direct link communication and at the same time reducing power consumption at the transmitting end.

Further, the information transmission method of the embodiment of the present disclosure further includes:

Further, the sending the first transmit power information of the first reference signal to the first communication device includes:

In the case where the second communication device is a terminal device, the first transmission power related information is sent on the physical direct link control channel PSCCH of the direct link through the direct link control information SCI, or, in the direct link The first transmit power related information is sent through radio resource control RRC signaling, for example, the first transmit power related information is sent by PC5RRC signaling on the direct link, or the PSBCH of the direct link is transmitted through the direct link The master information block SL-MIB sends the first transmit power related information.

Further, the sending the first transmission power related information of the first reference signal to the first communication device includes:

In the case that the second communication device is a base station device, the first transmission power related information is sent on the PDCCH of the downlink air interface link through the downlink control information DCI, or on the physical broadcast channel PBCH of the downlink air interface link Send the first transmit power related information through the master information block MIB, or send the first transmit power related information through RRC signaling on the downlink air interface link, for example, use Uu RRC signaling on the downlink air interface link Way to transmit.

As shown in FIG. 7, an embodiment of the present disclosure also provides a communication device, which is specifically the above-mentioned first communication device. Since the principle of the communication device to solve the problem is similar to the method for determining the transmission power in the embodiment of the disclosure, Therefore, the implementation of the communication device can refer to the implementation of the method, and the repetition will not be repeated. The communication device includes: a transceiver, a memory, a processor and those stored in the memory and running on the processor, and the processor implements the following steps when the processor executes the computer program:

Acquiring, through the transceiver, the first transmission power related information of the first reference signal sent by the second communication device;

Wherein, in FIG. 7, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 700 and various circuits of the memory represented by the memory 720 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The transceiver 710 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on a transmission medium. For different user equipment, the user interface 730 may also be an interface capable of connecting externally and internally with the required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 700 when performing operations.

Optionally, the processor 700 is further configured to perform the following steps before determining the path loss of the through link according to the first transmit power related information:

Optionally, the step of determining, by the processor 700, the path loss of the through link according to the first transmit power related information includes:

Optionally, the first transmission power related information is the transmission power of the first reference signal or a correlation factor of the first reference signal transmission power.

Optionally, the correlation factor of the transmission power of the first reference signal is a direct link path loss compensation factor.

Optionally, the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is one;

The step of, by the processor 700, determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

The path loss of the through link is determined by the following formula;

Among them, PL _SL represents the path loss of the through link,

Optionally, the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is at least two;

The path loss of the through link is determined by the following formula;

PL _SL =max(PL _SL1 , PL _SL2 ,...PL _SLN );

Among them, PL _SLi represents the path sub-loss of the i-th through link,

Optionally, the step of determining, by the processor 700, the through link transmission power of the first communication device according to the through link path loss includes:

Optionally, the first transmission power related information is a correlation factor h of the first reference signal transmission power, 0<h≤1, and the number of acquired first reference signals is one;

Determine the path loss of the through link by the following formula:

PL _SL = h*(P _max -RSRP _SL );

Optionally, the first transmit power related information is a correlation factor h of the transmit power of the first reference signal, h≥1, and the number of acquired first reference signals is one;

Determine the path loss of the through link by the following formula:

PL _SL = (P _max -RSRP _SL )/h;

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Optionally, the first transmit power related information is a correlation factor of the transmit power of the first reference signal, and the number of acquired first reference signals is at least two;

The step that the processor 700 executes according to the transmit power related information to determine the path loss of the through link includes:

The path loss of the through link is determined by the following formula;

h=max(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Determine the path loss of the through link by the following formula:

Optionally, the step of determining, by the processor 700, the through link transmit power of the first communication device according to the through link path loss includes:

h=1/min(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

Optionally, the first reference signal includes at least one of the following:

When the program is executed by the processor 700, all the implementation manners in the foregoing embodiment of the method for determining the transmission power applied to the first communication device can be realized, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.

In some embodiments of the present disclosure, a computer-readable storage medium is also provided, on which a computer program is stored, and when the program is executed by a processor, the following steps are implemented:

When the program is executed by the processor, all the implementation manners in the foregoing embodiment of the transmitting power determination method applied to the first communication device can be realized, and the same technical effect can be achieved. To avoid repetition, details are not described here.

As shown in FIG. 8, the embodiment of the present disclosure also provides a communication device, the communication device is specifically the first communication device described above, because the principle of the communication device to solve the problem is similar to the transmission power determination method in the embodiment of the disclosure Therefore, the implementation of the communication device can refer to the implementation of the method, and the repetition will not be repeated. The communication equipment includes:

The first obtaining module 801 is configured to obtain first transmission power related information of the first reference signal sent by the second communication device;

The first determining module 802 is configured to determine the through link path loss according to the information related to the first transmit power, where the through link path loss is the first communication device and the second communication device that sends the first reference signal Or the path loss of the through link between the third communication device;

The second determining module 803 is configured to determine the through link transmit power of the first communication device according to the through link path loss.

The communication device of the embodiment of the present disclosure further includes:

In the communication device of the embodiment of the present disclosure, the first determining module is configured to determine the through link path loss according to the received power of the first reference signal and the information related to the first transmit power.

In the communication device of the embodiment of the present disclosure, the first transmission power related information is the transmission power of the first reference signal or a correlation factor of the first reference signal transmission power.

In the communication device of the embodiment of the present disclosure, the correlation factor of the transmission power of the first reference signal is a direct link path loss compensation factor.

In the communication device of the embodiment of the present disclosure, the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is one;

The first determining module is configured to determine the path loss of the through link by using the following formula;

Among them, PL _SL represents the path loss of the through link,

In the communication device of the embodiment of the present disclosure, the first transmission power related information is the transmission power of the first reference signal, and the number of the acquired first reference signals is at least two;

PL _SL =max(PL _SL1 , PL _SL2 ,...PL _SLN );

Among them, PL _SLi represents the path sub-loss of the i-th through link,

In the communication device of the embodiment of the present disclosure, the second determining module is configured to determine the direct link transmit power of the first communication device by the following formula;

In the communication device of the embodiment of the present disclosure, the first transmit power related information is a correlation factor h of the transmit power of the first reference signal, 0<h≦1, and the number of acquired first reference signals is one;

The first determining module is configured to determine the path loss of the through link through the following formula;

PL _SL = h*(P _max -RSRP _SL );

In the communication device of the embodiment of the present disclosure, the first transmit power related information is a correlation factor h of the transmit power of the first reference signal, h≥1, and the number of acquired first reference signals is one;

PL _SL = (P _max -RSRP _SL )/h;

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

In the communication device of the embodiment of the present disclosure, the first transmission power related information is a correlation factor of the transmission power of the first reference signal, and the number of acquired first reference signals is at least two;

h=max(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

h=1/min(h ₁ , h ₂ ,..., h _N );

PL=min(h*PL _SL , b*PL _UL );

P _OUTB =min(P _max , 10*log ₁₀ (BW)+P ₀ +c*PL);

In the communication device of the embodiment of the present disclosure, the first reference signal includes at least one of the following:

The communication device of the embodiment of the present disclosure obtains the first transmission power related information of the first reference signal sent by the second communication device; and determines the through link path loss according to the first transmission power related information, and the through link path Loss is the path loss of the through link between the first communication device and the second or third communication device that sends the first reference signal; the first communication device is determined according to the through link path loss The transmit power of the through link can reduce the interference in the through link communication and at the same time reduce the power consumption of the transmitting end.

The communication device of the embodiment of the present disclosure can implement all the implementation manners in the foregoing embodiment of the transmitting power determination method applied to the first communication device side, and can achieve the same technical effect. In order to avoid repetition, details are not described herein again.

The embodiment of the present disclosure also provides a communication device, which is specifically a second communication device, and the second communication device may specifically be a terminal device or a base station device. Since the principle of the communication device to solve the problem is similar to the information transmission method in the embodiment of the present disclosure, the implementation of the communication device can refer to the implementation of the method, and the repetition will not be repeated.

When the second communication device is a terminal device, the structure of the second communication device is the same as the structure shown in FIG. 8, and will not be repeated here. When the second communication device is a base station device, as shown in FIG. 9, it includes a memory 920, a processor 900, a transceiver 910, a bus interface, and a program stored in the memory 920 and running on the processor 900. The processor 900 is configured to read the program in the memory 920 and execute the following process:

Wherein, in FIG. 9, the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 900 and various circuits of the memory represented by the memory 920 are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, no further descriptions are provided herein. The bus interface provides the interface. The transceiver 910 may be a plurality of elements, including a transmitter and a transceiver, and provide a unit for communicating with various other devices on a transmission medium. The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 when performing operations.

Optionally, the processor 900 is further configured to execute the following steps:

Optionally, the step of the processor 900 sending the first transmission power information of the first reference signal to the first communication device includes:

Optionally, the step of the processor 900 executing the first transmission power related information of the first reference signal to the first communication device includes:

In the communication device of the embodiment of the present disclosure, the first communication device sends the first transmission power related information of the first reference signal, so that the first communication device determines the through link path loss according to the first transmission power related information, and according to the through The link path loss determines the transmission power of the direct link of the first communication device, thereby reducing interference in direct link communication and at the same time reducing the power consumption of the transmitting end.

When the program is executed by the processor 900, all the implementation modes in the above-mentioned information transmission method embodiment applied to the second communication device side can be realized, and the same technical effect can be achieved. To avoid repetition, details are not described herein again.

When the program is executed by the processor, all the implementation modes in the above-mentioned information transmission method embodiment applied to the second communication device side can be realized, and the same technical effect can be achieved. In order to avoid repetition, details are not repeated here.

As shown in FIG. 10, the embodiment of the present disclosure also provides a communication device, which is specifically a second communication device. Since the principle of the communication device to solve the problem is similar to the information transmission method in the embodiment of the present disclosure, the The implementation of the communication device can refer to the implementation of the method, and the repetition will not be repeated.

The communication equipment includes:

The first sending module 1001 is configured to send first transmission power related information of a first reference signal to a first communication device, where the first transmission power related information is used by the first communication device to determine a through link path loss.

The communication device implemented in the present disclosure further includes:

In the communication device implemented in the present disclosure, the first sending module is configured to send through the direct link control information SCI on the physical direct link control channel PSCCH of the direct link when the second communication device is a terminal device The first transmission power related information is either sent on the through link through radio resource control RRC signaling, or, on the PSBCH of the through link, through the through link master information block SL -The MIB sends the first transmit power related information.

In the communication device implemented in the present disclosure, the first sending module is configured to send the first transmission power related data on the PDCCH of the downlink air interface link through the downlink control information DCI when the second communication device is a base station device. Information, or, send the first transmit power related information through the master information block MIB on the physical broadcast channel PBCH of the downlink air interface link, or send the first transmit power related information through RRC signaling on the downlink air interface link information.

The communication device of the embodiment of the present disclosure can implement all the implementation manners in the embodiment of the information transmission method applied to the second communication side, and can achieve the same technical effect. In order to avoid repetition, details are not described here.

In the various embodiments of the present disclosure, it should be understood that the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not correspond to the embodiments of the present disclosure. The implementation process constitutes any limitation.

The above are optional implementations of the present disclosure. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present disclosure, several improvements and modifications can be made. These improvements and modifications It should also be regarded as the protection scope of the present disclosure.

Claims

A method for determining transmission power is applied to a first communication device, and the method includes:

Acquiring first transmit power related information of the first reference signal sent by the second communication device;

Determine the through link path loss according to the information related to the first transmit power. The through link path loss is the difference between the first communication device and the second communication device or the third communication device that sends the first reference signal. The path loss of the through link;

Determine the through link transmit power of the first communication device according to the through link path loss.
The method for determining transmission power according to claim 1, wherein, before determining the path loss of a through link according to the first transmission power related information, the method further comprises:

Receiving the first reference signal sent by the second communication device or the third communication device.
The method for determining transmission power according to claim 2, wherein the determining the path loss of the through link according to the first transmission power related information comprises:

Determine the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power.
The transmission power determination method according to claim 3, wherein the first transmission power related information is the transmission power of the first reference signal or a correlation factor of the transmission power of the first reference signal.
The method for determining the transmission power according to claim 4, wherein the correlation factor of the transmission power of the first reference signal is a direct link path loss compensation factor.
The method for determining the transmission power of claim 4, wherein the first transmission power related information is the transmission power of the first reference signal, and the number of the acquired first reference signal is one;

The determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

The path loss of the through link is determined by the following formula;

Among them, PL SL represents the path loss of the through link,
Represents the transmit power of the first reference signal, and RSRP SL represents the received power of the first reference signal.
The transmission power determination method according to claim 4, wherein the first transmission power related information is the transmission power of the first reference signal, and the number of the first reference signals obtained is at least two;

The determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

The path loss of the through link is determined by the following formula;

PL SL =max(PL SL1 , PL SL2 ,...PL SLN );

Among them, PL SLi represents the path sub-loss of the i-th through link,
Represents the transmit power of the i-th first reference signal, RSRP SLi represents the received power of the i-th first reference signal, PL SL represents the path loss of the through link, i=[1,2,...,N], N is the result The number of the first reference signal, N≥2, and i and N are both positive integers.
The method for determining transmission power according to claim 6 or 7, wherein the determining the transmission power of the direct link of the first communication device according to the path loss of the direct link comprises:

Determine the transmit power of the through link of the first communication device by using the following formula;

PL=min(a*PL SL , b*PL UL ); P OUTB =min(P max , 10*log 10 (BW)+P 0 +c*PL);

Among them, PL represents the comprehensive path loss, P OUTB represents the transmission power of the through link of the first communication device, P max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P 0 represents the corresponding received power when the through link reaches the preset communication quality, a represents the first path loss compensation factor, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.
The method for determining the transmission power according to claim 4, wherein the first transmission power related information is a correlation factor h of the transmission power of the first reference signal, 0<h≤1, and the number of acquired first reference signals is One;

The determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

Determine the path loss of the through link by the following formula:

PL SL = h*(P max -RSRP SL );

Wherein, P max represents the maximum transmit power of the first communication device, RSRP SL represents the received power of the first reference signal, and PL SL represents the through link path loss.
The method for determining the transmission power according to claim 4, wherein the first transmission power related information is a correlation factor h of the transmission power of the first reference signal, h≥1, and the number of acquired first reference signals is one;

The determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

Determine the path loss of the through link by the following formula:

PL SL = (P max -RSRP SL )/h;

P max represents the maximum transmit power of the first communication device, RSRP SL represents the received power of the first reference signal, and PL SL represents the through link path loss.
The transmission power determination method according to claim 9 or 10, wherein the determining the direct link transmission power of the first communication device according to the direct link path loss comprises:

Determine the transmit power of the through link of the first communication device by using the following formula;

PL=min(h*PL SL , b*PL UL );

P OUTB =min(P max , 10*log 10 (BW)+P 0 +c*PL);

Among them, PL represents the comprehensive path loss, P OUTB represents the transmission power of the through link of the first communication device, P max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P 0 represents the corresponding received power when the through link reaches the preset communication quality, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.
The transmission power determination method according to claim 4, wherein the first transmission power related information is a correlation factor of the transmission power of the first reference signal, and the number of the acquired first reference signals is at least two;

The determining the path loss of the through link according to the transmission power related information includes:

The path loss of the through link is determined by the following formula;

PL SLi =h i *(P max -RSRP SLi ); PL SL =max(PL SL1 , PL SL2 ,...PL SLN );

Where PL SLi represents the path loss of the i-th through link, RSRP SLi represents the received power of the i-th first reference signal, P max represents the maximum transmit power of the first communication device, and h i represents the i-th first reference signal Correlation factor of signal transmission power, 0<h i ≤1, PL SL represents the path loss of the through link, i=[1,2,...,N], N is the number of the first reference signal, N≥2, And i and N are both positive integers.
The transmission power determination method according to claim 12, wherein the determining the direct link transmission power of the first communication device according to the direct link path loss comprises:

Determine the transmit power of the through link of the first communication device by using the following formula;

h=max(h 1 , h 2 ,..., h N );

PL=min(h*PL SL , b*PL UL );

P OUTB =min(P max , 10*log 10 (BW)+P 0 +c*PL);

Among them, PL represents the comprehensive path loss, P OUTB represents the transmission power of the through link of the first communication device, P max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P 0 represents the corresponding received power when the through link reaches the preset communication quality, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.
The transmission power determination method according to claim 4, wherein the first transmission power related information is a correlation factor of the transmission power of the first reference signal, and the number of the acquired first reference signals is at least two;

The determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

Determine the path loss of the through link by the following formula:

PL SLi = (P max- RSRP SLi )/h i ; PL SL = max(PL SL1 , PL SL2 ,...PL SLN );

Where PL SLi represents the path loss of the i-th through link, RSRP SLi represents the received power of the i-th first reference signal, P max represents the maximum transmit power of the first communication device, and h i represents the i-th first reference signal Correlation factor of signal transmission power, h i ≥1, PL SL represents the path loss of the through link, i=[1,2,...,N], N is the number of the first reference signal, N≥2, and i Both and N are positive integers.
The method for determining transmission power according to claim 14, wherein the determining the transmission power of the through link of the first communication device according to the path loss of the through link comprises:

Determine the transmit power of the through link of the first communication device by using the following formula;

h=1/min(h 1 , h 2 ,..., h N );

PL=min(h*PL SL , b*PL UL );

P OUTB =min(P max , 10*log 10 (BW)+P 0 +c*PL);

Among them, PL represents the comprehensive path loss, P OUTB represents the transmission power of the through link of the first communication device, P max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P 0 represents the corresponding received power when the through link reaches the preset communication quality, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.
The transmission power determination method according to claim 1, wherein the first reference signal includes at least one of the following:

Direct link primary synchronization signal S-PSS, direct link secondary synchronization signal S-SSS, physical direct link broadcast channel PSBCH, demodulation reference signal DMRS, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS , Physical direct link control channel PSCCH, physical direct link shared channel PSSCH, physical direct link feedback channel PSFCH, preset reference signals and preset physical channels.
An information transmission method applied to a second communication device, the method including:

Sending the first transmission power related information of the first reference signal to the first communication device, where the first transmission power related information is used by the first communication device to determine the through link path loss.
The information transmission method according to claim 17, further comprising:

In a case where the second communication device is a terminal device, sending a first reference signal to the first communication device.
The information transmission method according to claim 17, wherein the sending the first transmission power information of the first reference signal to the first communication device comprises:

In the case where the second communication device is a terminal device, the first transmission power related information is sent on the physical direct link control channel PSCCH of the direct link through the direct link control information SCI, or, in the direct link In the above, the first transmission power related information is sent through radio resource control RRC signaling, or the first transmission power related information is sent on the PSBCH of the through link through the through link master information block SL-MIB.
The information transmission method according to claim 17, wherein the sending the first transmission power related information of the first reference signal to the first communication device comprises:

In the case that the second communication device is a base station device, the first transmission power related information is sent on the PDCCH of the downlink air interface link through the downlink control information DCI, or on the physical broadcast channel PBCH of the downlink air interface link The first transmission power related information is sent through the master information block MIB, or the first transmission power related information is sent on the downlink air interface link through RRC signaling.
A communication device, the communication device being a first communication device, comprising: a transceiver, a memory, a processor, and a program stored in the memory and running on the processor, wherein the processor executes the program Implement the following steps:

Acquiring first transmit power related information of the first reference signal sent by the second communication device;

Determine the through link path loss according to the information related to the first transmit power. The through link path loss is the difference between the first communication device and the second communication device or the third communication device that sends the first reference signal. The path loss of the through link;

Determine the through link transmit power of the first communication device according to the through link path loss.
The communication device according to claim 21, wherein the processor is further configured to perform the following steps before determining the path loss of the through link according to the first transmission power related information:

Receiving the first reference signal sent by the second communication device or the third communication device through a transceiver.
The communication device according to claim 22, wherein the step of the processor performing the determination of the through link path loss based on the first transmission power related information comprises:

Determine the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power.
The communication device according to claim 23, wherein the first transmission power related information is the transmission power of the first reference signal or a correlation factor of the transmission power of the first reference signal.
The communication device according to claim 24, wherein the correlation factor of the transmission power of the first reference signal is a direct link path loss compensation factor.
The communication device according to claim 24, wherein the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is one;

The step of the processor executing the step of determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

The path loss of the through link is determined by the following formula;

Among them, PL SL represents the path loss of the through link,
Represents the transmit power of the first reference signal, and RSRP SL represents the received power of the first reference signal.
The communication device according to claim 24, wherein the first transmission power related information is the transmission power of the first reference signal, and the number of acquired first reference signals is at least two;

The step of the processor executing the step of determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

The path loss of the through link is determined by the following formula;

PL SL =max(PL SL1 , PL SL2 ,...PL SLN );

Among them, PL SLi represents the path sub-loss of the i-th through link,
Represents the transmit power of the i-th first reference signal, RSRP SLi represents the received power of the i-th first reference signal, PL SL represents the path loss of the through link, i=[1,2,...,N], N is the result The number of the first reference signal, N≥2, and i and N are both positive integers.
The communication device according to claim 26 or 27, wherein the step of, by the processor, determining the direct link transmit power of the first communication device according to the direct link path loss comprises:

Determine the transmit power of the through link of the first communication device by using the following formula;

PL=min(a*PL SL , b*PL UL ); P OUTB =min(P max , 10*log 10 (BW)+P 0 +c*PL);

Among them, PL represents the comprehensive path loss, P OUTB represents the transmission power of the through link of the first communication device, P max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P 0 represents the corresponding received power when the through link reaches the preset communication quality, a represents the first path loss compensation factor, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.
The communication device according to claim 24, wherein the first transmission power related information is a correlation factor h of the transmission power of the first reference signal, 0<h≦1, and the number of acquired first reference signals is one;

The step of the processor executing the step of determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

Determine the path loss of the through link by the following formula:

PL SL = h*(P max -RSRP SL );

Wherein, P max represents the maximum transmit power of the first communication device, RSRP SL represents the received power of the first reference signal, and PL SL represents the through link path loss.
The communication device according to claim 24, wherein the first transmission power related information is a correlation factor h of the transmission power of the first reference signal, h≥1, and the number of acquired first reference signals is one;

The step of the processor executing the step of determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

Determine the path loss of the through link by the following formula:

PL SL = (P max -RSRP SL )/h;

P max represents the maximum transmit power of the first communication device, RSRP SL represents the received power of the first reference signal, and PL SL represents the through link path loss.
The communication device according to claim 29 or 30, wherein the step of the processor executing the step of determining the direct link transmission power of the first communication device according to the direct link path loss comprises:

Determine the transmit power of the through link of the first communication device by using the following formula;

PL=min(h*PL SL , b*PL UL );

P OUTB =min(P max , 10*log 10 (BW)+P 0 +c*PL);

Among them, PL represents the comprehensive path loss, P OUTB represents the transmission power of the through link of the first communication device, P max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P 0 represents the corresponding received power when the through link reaches the preset communication quality, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.
The communication device according to claim 24, wherein the first transmission power related information is a correlation factor of the transmission power of the first reference signal, and the number of acquired first reference signals is at least two;

The step of determining, by the processor, the path loss of the through link according to the transmission power related information includes:

The path loss of the through link is determined by the following formula;

PL SLi =h i *(P max -RSRP SLi ); PL SL =max(PL SL1 , PL SL2 ,...PL SLN );

Where PL SLi represents the path loss of the i-th through link, RSRP SLi represents the received power of the i-th first reference signal, P max represents the maximum transmit power of the first communication device, and h i represents the i-th first reference signal The correlation factor of the signal transmission power, 0<h i ≤1, PL SL represents the path loss of the through link, i=[1,2,...,N], N is the number of the first reference signal, N≥2, And i and N are both positive integers.
The communication device according to claim 32, wherein the step of, by the processor, determining the direct link transmission power of the first communication device according to the direct link path loss comprises:

Determine the transmit power of the through link of the first communication device by using the following formula;

h=max(h 1 , h 2 ,..., h N );

PL=min(h*PL SL , b*PL UL );

P OUTB =min(P max , 10*log 10 (BW)+P 0 +c*PL);

Among them, PL represents the comprehensive path loss, P OUTB represents the transmission power of the through link of the first communication device, P max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P 0 represents the corresponding received power when the through link reaches the preset communication quality, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.
The communication device according to claim 24, wherein the first transmission power related information is a correlation factor of the transmission power of the first reference signal, and the number of acquired first reference signals is at least two;

The step of the processor executing the step of determining the path loss of the through link according to the received power of the first reference signal and the information related to the first transmit power includes:

Determine the path loss of the through link by the following formula:

PL SLi = (P max- RSRP SLi )/h i ; PL SL = max(PL SL1 , PL SL2 ,...PL SLN );

Where PL SLi represents the path loss of the i-th through link, RSRP SLi represents the received power of the i-th first reference signal, P max represents the maximum transmit power of the first communication device, and h i represents the i-th first reference signal Correlation factor of signal transmission power, h i ≥1, PL SL represents the path loss of the through link, i=[1,2,...,N], N is the number of the first reference signal, N≥2, and i Both and N are positive integers.
The communication device according to claim 34, wherein the step of the processor performing the step of determining the direct link transmission power of the first communication device according to the direct link path loss comprises:

Determine the transmit power of the through link of the first communication device by using the following formula;

h=1/min(h 1 , h 2 ,..., h N );

PL=min(h*PL SL , b*PL UL );

P OUTB =min(P max , 10*log 10 (BW)+P 0 +c*PL);

Among them, PL represents the comprehensive path loss, P OUTB represents the transmission power of the through link of the first communication device, P max represents the maximum transmission power of the first communication device, BW represents the frequency bandwidth occupied by the transmission signal of the first communication device, and P 0 represents the corresponding received power when the through link reaches the preset communication quality, b represents the second path loss compensation factor, and c represents the third path loss compensation factor.
The communication device according to claim 21, wherein the first reference signal comprises at least one of the following:

Direct link primary synchronization signal S-PSS, direct link secondary synchronization signal S-SSS, physical direct link broadcast channel PSBCH, demodulation reference signal DMRS, channel state information reference signal CSI-RS, phase tracking reference signal PT-RS , Physical direct link control channel PSCCH, physical direct link shared channel PSSCH, physical direct link feedback channel PSFCH, preset reference signals and preset physical channels.
A computer-readable storage medium, on which a computer program is stored, when the computer program is executed by a processor, the steps of the method for determining the transmission power according to any one of claims 1 to 16 are realized.
A communication device, the communication device being a second communication device, comprising: a transceiver, a memory, a processor, and a program stored in the memory and running on the processor, wherein when the processor executes the program Implement the following steps:

The transceiver is controlled to send the first transmission power related information of the first reference signal to the first communication device, where the first transmission power related information is used by the first communication device to determine the through link path loss.
The communication device according to claim 38, wherein the processor is further configured to perform the following steps:

In a case where the second communication device is a terminal device, sending a first reference signal to the first communication device.
The communication device according to claim 38, wherein the step of the processor executing the first transmission power information of the first reference signal to the first communication device comprises:

In the case where the second communication device is a terminal device, the first transmission power related information is sent on the physical direct link control channel PSCCH of the direct link through the direct link control information SCI, or, in the direct link In the above, the first transmission power related information is sent through radio resource control RRC signaling, or the first transmission power related information is sent on the PSBCH of the through link through the through link master information block SL-MIB.
The communication device according to claim 38, wherein the step of the processor executing the first transmission power related information of the first reference signal to the first communication device comprises:

In the case that the second communication device is a base station device, the first transmission power related information is sent on the PDCCH of the downlink air interface link through the downlink control information DCI, or on the physical broadcast channel PBCH of the downlink air interface link The first transmission power related information is sent through the master information block MIB, or the first transmission power related information is sent on the downlink air interface link through RRC signaling.
A computer-readable storage medium with a computer program stored thereon, and when the computer program is executed by a processor, the steps of the information transmission method according to any one of claims 17 to 20 are realized.
A communication device, where the communication device is a first communication device, includes:

The first obtaining module is configured to obtain first transmission power related information of the first reference signal sent by the second communication device;

The first determining module is configured to determine the path loss of the through link according to the information related to the first transmit power, where the path loss of the through link is the first communication device and the second communication device sending the first reference signal or The path loss of the through link between the third communication device;

The second determining module is configured to determine the through link transmit power of the first communication device according to the through link path loss.
The communication device according to claim 43, further comprising:

The receiving module is configured to receive the first reference signal sent by the second communication device or the third communication device before determining the path loss of the through link according to the first transmission power related information.
The communication device according to claim 44, wherein the first determining module is configured to determine the through link path loss according to the received power of the first reference signal and the information related to the first transmit power.
The communication device according to claim 45, wherein the first transmission power related information is a transmission power of the first reference signal or a correlation factor of the transmission power of the first reference signal.
A communication device, where the communication device is a second communication device, includes:

The first sending module is configured to send first transmission power related information of a first reference signal to a first communication device, where the first transmission power related information is used by the first communication device to determine a through link path loss.
The communication device according to claim 47, further comprising:

The second sending module is configured to send a first reference signal to the first communication device when the second communication device is a terminal device.
The communication device according to claim 47, wherein the first sending module is configured to pass the through link on the physical through link control channel PSCCH of the through link when the second communication device is a terminal device. The path control information SCI sends the first transmission power related information, or sends the first transmission power related information on the through link through radio resource control RRC signaling, or, through the through link on the PSBCH of the through link The route master information block SL-MIB sends the first transmit power related information.
The communication device according to claim 47, wherein the first sending module is configured to send the downlink control information DCI on the PDCCH of the downlink air interface link when the second communication device is a base station device. The first transmit power related information, or the first transmit power related information is sent on the physical broadcast channel PBCH of the downlink air interface link through the master information block MIB, or the first transmit power related information is sent on the downlink air interface link through RRC signaling First transmit power related information.