CN116781216A - Data feedback method, device, terminal node and storage medium - Google Patents

Abstract

The application provides a data feedback method, a data feedback device, a terminal node and a storage medium. The data feedback method comprises the following steps: obtaining the path loss information of a feedback channel; determining the power of a single feedback channel and the total power of the feedback channel in the time slot according to the path loss information; determining the number of feedback channels supported by the time slot according to the total power; and transmitting data to be fed back in the time slot according to the number of the feedback channels. The technical scheme realizes quantitative calculation of the number of the feedback channels by utilizing the path loss information and the power of the feedback channels, provides a quantization basis for a feedback mechanism and improves the feedback reliability.

Description

Data feedback method, device, terminal node and storage medium

Technical field

This application relates to the field of wireless communication technology, for example, to a data feedback method, device, terminal node and storage medium.

Background technique

New Radio (NR) supports broadcast services, multicast services and unicast services, and introduces the Hybrid Automatic Repeat reQuest (Hybrid Automatic Repeat reQuest) of the Physical Sidelink Feedback Channel (PSFCH) of the physical layer. , HARQ) feedback mechanism to ensure the reliability of unicast transmission link transmission. The same terminal may feed back multiple HARQ information in the same PSFCH time slot resource. According to the protocol, the transmit power of PSFCH is related to N _{Tx, PSFCH} .

N _Tx,PSFCH is the number of feedback channels selected by the terminal in order of priority from high to low, and the power of multiple HARQ feedback information sent by the same terminal is evenly processed according to the maximum transmission power. However, there is currently no effective quantitative calculation method for the number of feedbacks in PSFCH. If the number of feedbacks is small, it will increase the risk of retransmission due to loss of feedback information; if the number of feedbacks is large, transmission efficiency and transmission efficiency cannot be guaranteed. Feedback performance.

Contents of the invention

This application provides a data feedback method, device, terminal node and storage medium to achieve quantitative calculation of the number of feedback channels and improve feedback reliability.

The embodiment of this application provides a data feedback method, applied to terminal nodes, including:

Obtain the path loss information of the feedback channel;

Determine the power of a single feedback channel and the total power of the feedback channel in the time slot according to the path loss information;

Determine the number of feedback channels supported by the time slot according to the power of each feedback channel and the total power;

Data to be fed back is transmitted in the time slot according to the number of feedback channels.

The embodiment of the present application also provides a data feedback device, including:

The acquisition module is configured to obtain the path loss information of the feedback channel;

A first determination module configured to determine the power of a single feedback channel and the total power of the feedback channel in the time slot based on the path loss information;

The second determination module is configured to determine the number of feedback channels supported by the time slot based on the power of each feedback channel and the total power;

A feedback module is configured to transmit data to be fed back in the time slot according to the number of feedback channels.

An embodiment of the present application also provides a terminal node, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the above-mentioned data feedback method is implemented.

Embodiments of the present application also provide a computer-readable storage medium. A computer program is stored on the computer-readable storage medium. When the program is executed by a processor, the above-mentioned data feedback method is implemented.

Embodiments of the present application provide a data feedback method, device, terminal node and storage medium. The data feedback method includes: obtaining path loss information of a feedback channel; determining the power of a single feedback channel and the total power of the feedback channels in the time slot according to the path loss information; determining the power of each feedback channel and the total power. The number of feedback channels supported by the time slot; data to be fed back is transmitted in the time slot according to the number of feedback channels. The above technical solution uses path loss information and the power of the feedback channel to achieve quantitative calculation of the number of feedback channels, provides a quantitative basis for the feedback mechanism, and improves the reliability of feedback.

Description of drawings

Figure 1 is a schematic diagram of a PSFCH carrying feedback information of multiple PSSCH channels;

Figure 2 is a schematic diagram of another PSFCH carrying feedback information of multiple PSSCH channels;

Figure 3 is a schematic diagram of direct link communication between terminal nodes;

Figure 4 is a schematic diagram of transmitting data to be fed back between terminal nodes;

Figure 5 is a flow chart of a data feedback method provided by an embodiment;

Figure 6 is a schematic diagram of a PSSCH service and corresponding feedback timing provided by an embodiment;

Figure 7 is a schematic flowchart of calculating the number of feedback channels supported by a time slot according to an embodiment;

Figure 8 is a schematic structural diagram of a data feedback device provided by an embodiment;

Figure 9 is a schematic diagram of the hardware structure of a terminal node provided by an embodiment.

Detailed ways

The present application will be described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the present application, but not to limit the present application. It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other. In addition, it should be noted that, for convenience of description, only some but not all structures related to the present application are shown in the drawings.

In NR, PSFCH carries the HARQ feedback information of the Physical Sidelink Control Channel (PSSCH) and is used for unicast and multicast services. HARQ feedback information can be acknowledgment information (Acknowledge, ACK) or non-acknowledge information (Non-Acknowledge, NACK), or it can be NACK-only. NACK-only is only used for multicast services, mainly for multiple receiving terminals. Send feedback information for the same PSSCH to minimize resource usage.

In the time domain, there is an opportunity to send PSFCH every 1, 2, or 4 direct link time slots (Slots), which can be determined by higher layer parameters. If the higher layer parameter is configured as 0, PSFCH feedback is not configured. There may be situations where the same terminal feeds back multiple HARQ information in the same PSFCH time slot resource.

Figure 1 is a schematic diagram of a PSFCH carrying feedback information of multiple PSSCH channels. As shown in Figure 1, the feedback information of multiple PSSCH channels in the time domain is carried on one PSFCH channel.

Figure 2 is a schematic diagram of another PSFCH carrying feedback information of multiple PSSCH channels. As shown in Figure 2, the feedback information of multiple PSSCH channels in the same time slot in the frequency domain is carried on one PSFCH channel.

When multiple HARQ information is fed back in the same PSFCH time slot resource, the protocol stipulates that the PSFCH transmit power calculation formula is:

P _PSFCH,k (i)＝P _CMAX -10log ₁₀ (N _Tx,PSFCH )[dBm]

Among them, P _PSFCH,k (i) is the power of the k-th feedback channel and 1≤k≤N _Tx,PSFCH ; N _Tx,PSFCH is the number of feedback channels selected by the terminal in order from high to low priority, And N _Tx,PSFCH ≤ _{N max,PSFCH} ; N _max,PSFCH is the maximum number of channels that the terminal needs to feedback HARQ. _PCMAX is the maximum transmit power supported by the terminal.

It can be seen from the above formula that in resource competition mode, the transmission power of the PSFCH channel is determined by the terminal itself according to the priority. The transmission of N _{Tx, PSFCH} feedback channels, and the power of multiple HARQ feedback information sent by the same terminal is according to The maximum transmit power is equally distributed. This feedback method has the following problems:

1) N _{Tx and PSFCH} need to be determined independently by the terminal, but no effective quantitative calculation principle is provided;

2) The feedback power of different priorities is consistent, ignoring the need to ensure the reliability of high-priority services as much as possible;

3) The power of multiple HARQ feedback information sent by the same terminal is evenly processed according to the maximum transmission power, and the power difference caused by the distance between different terminals is not considered.

Figure 3 is a schematic diagram of direct link communication between terminal nodes. As shown in the figure below, A communicates with B, C, and D respectively. The communication between A and B is unicast, and A communicates with C and D in multicast.

Figure 4 is a schematic diagram of transmitting data to be fed back between terminal nodes. The HARQ feedback information sent by A to B, C, and D is on different PSFCH resources in the same time slot.

It can be seen that if the principle of power equalization is followed, the power between A and D may be too small, causing feedback failure, and the power between A and B exceeds the power required for demodulation, causing unnecessary waste of resources.

The embodiment of the present application provides a data feedback method, which uses path loss information and the power of the feedback channel to achieve quantitative calculation of the number of feedback channels, effectively determining the number of _{NTx and PSFCH} that can be supported in a time slot, taking into account The distance between different terminals improves the reliability of feedback. On this basis, the HARQ feedback power can also be controlled to further ensure the feedback of higher priority services.

Figure 5 is a flow chart of a data feedback method provided by an embodiment. This data feedback method is suitable for HARQ feedback scenarios under direct link communication, such as HARQ feedback between different terminal nodes in the Internet of Vehicles. This data feedback method can be applied to terminal nodes, which can be user terminals (User Euipment, UE) and other communication devices that can perform direct link communication, and the terminal nodes support unicast and multicast communication with other communication devices. As shown in Figure 5, the method includes the following steps:

In step 110, path loss information of the feedback channel is obtained.

In step 120, the power of a single feedback channel and the total power of the feedback channels in the time slot are determined according to the path loss information.

In step 130, the number of feedback channels supported by the time slot is determined based on the power of each feedback channel and the total power.

In step 140, the data to be fed back is transmitted in the time slot according to the number of feedback channels.

In this embodiment, the feedback channel mainly refers to the PSFCH channel, and the data to be fed back mainly refers to the HARQ feedback information of the PSFCH. The total number of all PSFCH channels that need to be fed back in a time slot is recorded as N. First, the path loss information of each feedback channel is determined. Based on the path loss information, the expected transmission power of each feedback channel can be determined, and then all the feedback channels in the time slot can be obtained. The total power fed back by PSFCH; then the terminal node can determine the final number of supported feedback channels N _Tx,PSFCH based on the service priority (which can also be understood as the power level of the feedback channel) and the total power of all feedback channels in the time slot, etc. And use _{NTx, PSFCH} feedback channels to transmit data to be fed back. For example, if the total power of all feedback channels in this time slot is not greater than the maximum transmission power supported by the terminal node, all feedback channels in this time slot can transmit the data to be fed back; otherwise, the data to be fed back in part of the feedback channels needs to be discarded. For example, the data to be fed back can be transmitted The PSFCH feedback corresponding to the low-priority PSSCH is discarded.

The data feedback method in this embodiment uses path loss information and the power of the feedback channel to quantitatively calculate the number of feedback channels. For the same time slot, the number of feedback can be maximized on the basis of ensuring reliable transmission and avoiding as much as possible The reliability of feedback is improved due to unnecessary retransmission due to loss of feedback information.

In one embodiment, obtaining the path loss information of the feedback channel includes: for the unicast feedback channel, based on the Reference Signal Receiving Power (RSRP) carried in the direct link measurement report fed back by the peer node and the terminal node Calculate the path loss value based on the unicast transmit power.

Specifically, as shown in Figure 3, taking the terminal node A and the peer node B as an example, in a unicast scenario, A can send a reference signal through the Sidelink Share Channel (SL-SCH). B feeds back the direct link measurement report (Measurement Report Sidelink) to A. Based on the RSRP and unicast transmission power carried in it, A can calculate the path loss value PL _{SL (AB)} between AB as:

PL _SL(AB) =TxPower–higher layer filtered RSRP

Among them, TxPower is the transmit power of A, and the higher layer filtered RSRP is the smoothing filtered result of the RSRP fed back by B.

In one embodiment, obtaining the path loss information of the feedback channel includes: for the multicast feedback channel, calculating the path loss value based on measuring the reference signal received power obtained by the peer node and the multicast transmit power of the terminal node; wherein, the multicast The transmit power is determined based on the maximum transmit power supported by the terminal node, the service priority, and the Channel Busy Ratio (CBR) measured at the time of service transmission.

Specifically, the transmit power in a multicast scenario can be determined based on the maximum transmit power supported by the terminal node, the priority of the service to be sent, and the CBR measured corresponding to the time when the service is sent. For example, take the minimum value from P _CMAX and P _{MAX, CBR} to obtain the multicast transmission power P _PSSCH :

P _PSSCH =min(P _CMAX ,P _MAX,CBR )[dBm]

Among them, P _CMAX is the maximum transmit power supported by the terminal node, which is related to the power level supported by the terminal node; P _{MAX and CBR} can be determined by PSSCH according to the service priority and the CBR value measured corresponding to the service transmission time, where the service priority can be It is obtained through the packet priority (ProSe Per-Packet Priority, PPPP) carried in the SCI carried by the PSCCH, which can generally be obtained through preconfiguration information.

As shown in Figure 3, taking the terminal node A and the multicast peer nodes C and D respectively, assuming that the CBR values measured between multicast communication UEs are relatively close within a certain period of time, A and C can be obtained , the power P _PSSCH transmitted between A and D, so that A obtains the corresponding RSRP information RSRP _AC and RSRP _AD by measuring C and D, and can obtain the path loss value between A and C, and A and D:

PL _SL(AC) =TxPower _SL(C) –RSRP _SL(AC)

PL _SL(AD) =TxPower _SL(D) –RSRP _SL(AD)

Among them, RSRP _AC is the RSRP obtained by A when C sends multicast data, RSRP _AD is the RSRP information obtained by A when D sends multicast data; TxPower _SL(C) is the multicast transmission power of C, and TxPower _SL(D) is The multicast transmission power of D can be reversely deduced from the CBR of A at the corresponding time and the PPPP of the received C and D services. Among them, the PPPP, CBR range (Range) and transmission parameters (Transmission Parameters) The mapping relationship between them is as follows:

8 PPPP correspond to 16 CBR Range, corresponding to the following sending parameters:

1) Maximum Transmit Power;

2) Range on Number of Retransmissions per Transmission Block;

3)Range of PSSCH Subchannel Number;

4) Range of Modulation and Coding Scheme;

5)Maximum Limit on Occupancy Ratio.

Figure 6 is a schematic diagram of a PSSCH service and corresponding feedback timing provided by an embodiment. As shown in Figure 6, since the feedback of PSFCH is periodic, that is, the PSFCH channels received within a period of time are uniformly fed back on the PSFCH channel of a certain time slot according to the rules, and the feedback period of PSFCH can be configured as 1/ 2/4Slot, that is to say, the time between PSFCH feedback time and PSSCH transmission time is generally relatively close, so it can be considered that the path loss value does not change much, so the values of PL _{SL (AC)} and PL _{SL (AD)} can be calculated based on the latest One PSSCH service data calculation and acquisition.

In one embodiment, determining the power of a single feedback channel based on the path loss information includes: based on the expected received power of the demodulated single feedback channel, the product of the path loss smoothing factor and the corresponding path loss value, the compensation value and power corresponding to the priority The product of the adjustment factors determines the power of the individual feedback channels.

In this embodiment, the power of a single feedback channel may be the sum of the desired received power, the product of the path loss value and the path loss smoothing factor, and the product of the compensation value and the power adjustment factor.

Specifically, the calculation formula defining the power of a single feedback channel is as follows:

P _PSFCH,i =P _O,PSFCH +α _PSFCH ·PL+β _PSFCH ·Δ _Priotity [dBm]

Among them, P _PSFCH,i is the power of the i-th feedback channel, P _O,PSFCH is the expected received power of the demodulated PSFCH channel, which can be obtained through simulation; α _PSFCH is the path loss smoothing factor, α _PSFCH ≤ 1, usually a value Between 0.8 and 1; PL is the path loss value of the corresponding feedback channel; _ΔPriotity is the compensation value corresponding to the priority of the data to be fed back, which is a constant; _βPSFCH is the power adjustment factor corresponding to the priority of the data to be fed back. Table 1 is a mapping relationship table between priorities and power adjustment factors. As shown in Table 1, the β _PSFCH difference between different priorities is related to the value of Δ _Priotity . The larger the Δ _Priotity setting, the smaller the β _PSFCH difference between different priorities).

Table 1 Mapping relationship between priority and power adjustment factor

Priority (PPPP) _βPSFCH 0 1 1 0.9 2 0.8 3 0.7 4 0.6 5 0.5 6 0.4 7 0.3

Based on the above, the total power of all feedback channels in this time slot is: Among them, N is the total number of PSFCH channels to be fed back in the time slot.

In one embodiment, the number of feedback channels supported by the time slot is determined based on the power of each feedback channel and the total power, including: if the total power does not exceed the maximum transmission power supported by the terminal node, then the number of feedback channels is the feedback channel within the time slot. The total number of channels; the method also includes: multiplying the power of each feedback channel by a power shift factor.

In this embodiment, it is necessary to ensure that the sum of the powers of all feedback channels in the time slot does not exceed the maximum transmission power supported by the terminal node, that is, Under this premise, if N _Tx,PSFCH =N can satisfy the above formula, it means that the feedback of all feedback channels in this time slot can be supported, and there is no need to discard part of the feedback. In this case, P _total = _PCMAX can be set to make full use of the maximum transmission power and improve the reliability of data transmission.

In addition, the power of each feedback channel can be normalized, and the power shift factor that meets the maximum transmit power condition can be set as: It can be satisfied by multiplying the data carried by each feedback channel by the power shift factor:/>

In one embodiment, the number of feedback channels supported by the time slot is determined based on the power of each feedback channel and the total power, including: if the total power exceeds the maximum transmission power supported by the terminal node, discard the part according to the service priority from low to high. The data to be fed back is fed back until the sum of the powers of the remaining feedback channels does not exceed the maximum transmit power of the terminal node, and the number of feedback channels is the number of remaining feedback channels.

In this embodiment, it is necessary to ensure that the sum of the powers of all feedback channels in the time slot does not exceed the maximum transmission power supported by the terminal node, that is, Under this premise, if 1<N _{Tx, PSFCH} <N can satisfy the above formula, indicating that the total power of all feedback channels in this time slot exceeds the maximum transmit power capability of the terminal node. In this case, some low-priority services can be Corresponding feedback is discarded. The discarding principle may be to discard in order from low to high priority until the total power of the remaining feedback channels satisfies the above formula, and then determine the final number of retained feedback channels N _Tx,PSFCH .

In one embodiment, the method further includes: if the power of the feedback channel corresponding to the highest service priority is greater than or equal to the maximum transmission power supported by the terminal node, then the number of feedback channels is 1; changing the feedback channel corresponding to the highest service priority to The power limit is the maximum transmit power.

In this embodiment, it is necessary to ensure that the sum of the powers of all feedback channels in the time slot does not exceed the maximum transmission power supported by the terminal node, that is, Under this premise, the above formula can be satisfied only if N _Tx,PSFCH = 0, which means that only one feedback with the highest priority can be supported, and the expected power of the feedback exceeds the maximum transmit power supported by the terminal node. In this case, it can Limit N _Tx,PSFCH =1, and the power of the feedback channel corresponding to the highest priority is limited to the maximum transmit power supported by the terminal node.

FIG. 7 is a schematic flowchart of calculating the number of feedback channels supported by a time slot according to an embodiment. As shown in Figure 7, the process of calculating the number of feedback channels supported by a time slot is as follows:

Determine the total number N of PSFCH feedback channels in the time slot;

Calculate the path loss value PL _SL of each feedback channel;

Determine the power _PPSFCH,i of each feedback channel according to the path loss value of each feedback channel (i≤N);

Calculate the total power P _total of each feedback channel;

P _total ≤ P _CMAX ? If so, determine the number of supported feedback channels N _TX,PSFCH =N, and multiply the power of each feedback channel by the power shift factor for normalization; otherwise, discard the lowest priority PSFCH feedback and recalculate the remaining The sum of the total powers of the feedback channels P _total ';

P _total '≤P _CMAX ? If so, determine the number of supported feedback channels to be the number of remaining feedback channels; otherwise, if there are at least two feedback channels remaining, continue to discard the lowest priority PSFCH feedback, and recalculate the sum of the total powers of the remaining feedback channels P _total '; If there is only one feedback channel left, the number of supported feedback channels is determined to be 1. The remaining feedback channel is the highest priority feedback channel, and its power is limited to the maximum transmit power supported by the terminal node.

The data feedback method provided by this embodiment can be applied to the calculation of HARQ feedback power in the Internet of Vehicles. It can conveniently and efficiently quantitatively calculate the number of feedback channels according to the service priority (power level) of the terminal node, which can ensure the reliability of feedback data transmission. sex. This method takes into account the difference in reliability of HARQ feedback between different priorities and calculates the required transmission power for each feedback channel. For HARQ feedback corresponding to high-priority services, a certain amount of power is left on the basis of ensuring the reliability of its power. margin. In addition, this method avoids the problems in the protocol where all HARQ feedback is equally distributed with maximum power. For example, the power required for actual feedback is low, but it is caused by transmitting at maximum power when demodulating PSFCH does not require maximum transmission power. The power consumption is too high, or in fact, the feedback corresponding to high-priority data requires relatively large power, and the feedback corresponding to other priority data requires smaller power to meet the demodulation conditions, but the power sharing method results in high power consumption. Problems such as insufficient feedback power corresponding to priority data and feedback failure.

An embodiment of the present application also provides a data feedback device. FIG. 8 is a schematic structural diagram of a data feedback device according to an embodiment. As shown in Figure 8, the data feedback device includes:

The acquisition module 210 is configured to acquire path loss information of the feedback channel;

The first determination module 220 is configured to determine the power of a single feedback channel and the total power of the feedback channel in the time slot according to the path loss information;

The second determination module 230 is configured to determine the number of feedback channels supported by the time slot according to the power of each feedback channel and the total power;

The feedback module 240 is configured to transmit the data to be fed back in the time slot according to the number of feedback channels.

The data feedback device of this embodiment uses path loss information and the power of the feedback channel to quantitatively calculate the number of feedback channels. For the same time slot, it can maximize the number of feedbacks on the basis of ensuring reliable transmission and avoid as much as possible The reliability of feedback is improved due to unnecessary retransmission due to loss of feedback information.

In one embodiment, the acquisition module 210 is configured as:

For the unicast feedback channel, the path loss value is calculated based on the reference signal reception power carried in the direct link measurement report fed back by the opposite end node and the unicast transmission power of the terminal node.

In one embodiment, the acquisition module 210 is configured to: for the multicast feedback channel, calculate the path loss value according to the reference signal reception power obtained by measuring the peer node and the multicast transmission power of the terminal node;

The multicast transmission power is determined based on the maximum transmission power supported by the terminal node, the service priority, and the channel busy ratio measured at the time when the service is sent.

In one embodiment, the first determining module 220 includes:

A single power determination unit configured to determine the single feedback channel based on the desired received power for demodulating the single feedback channel, the product of the path loss smoothing factor and the corresponding path loss value, the product of the corresponding priority compensation value and the power adjustment factor of power.

In one embodiment, the second determination module 230 is configured as:

If the total power does not exceed the maximum transmission power supported by the terminal node, then the number of feedback channels is the total number of feedback channels in the time slot;

The device also includes:

The power adjustment module is configured to multiply the power of each feedback channel by a power shift factor.

In one embodiment, the second determination module 230 is configured as:

If the total power exceeds the maximum transmission power supported by the terminal node, the data to be fed back in part of the feedback channels will be discarded according to the service priority from low to high until the sum of the powers of the remaining feedback channels does not exceed the maximum transmission power of the terminal node. Transmit power, and the number of feedback channels is the number of remaining feedback channels.

In one embodiment, the second determination module 230 is configured as:

If the power of the feedback channel corresponding to the highest service priority is greater than or equal to the maximum transmission power supported by the terminal node, then the number of feedback channels is 1;

The device also includes:

A power limiting module configured to limit the power of the feedback channel corresponding to the highest service priority to the maximum transmit power.

The data feedback device proposed in this embodiment and the data feedback method applied to terminal nodes proposed in the above embodiment belong to the same inventive concept. Technical details not described in detail in this embodiment can be found in any of the above embodiments, and this embodiment has The same beneficial effect as implementing the data feedback method applied to the terminal node.

The embodiment of the present application also provides a terminal node. Figure 9 is a schematic diagram of the hardware structure of a terminal node provided by an embodiment. As shown in Figure 9, the terminal node provided by the present application may refer to a terminal node or a terminal node, including The memory 320, the processor 310, and a computer program stored in the memory and executable on the processor implement the above-mentioned data feedback method applied to the terminal node when the processor 310 executes the program.

The terminal node may also include a memory 320; the processor 310 in the terminal node may be one or more, one processor 310 is taken as an example in Figure 9; the memory 320 is used to store one or more programs; the one or more A program is executed by the one or more processors 310, so that the one or more processors 310 implement the data feedback method applied to the terminal node as described in the embodiment of this application.

The terminal node also includes: a communication device 330, an input device 340, and an output device 350.

The processor 310, memory 320, communication device 330, input device 340 and output device 350 in the terminal node can be connected through a bus or other means. In Figure 9, connection through a bus is taken as an example.

The input device 340 may be used to receive input numeric or character information, and generate key signal input related to user settings and function control of the terminal node. The output device 350 may include a display device such as a display screen.

Communication device 330 may include a receiver and a transmitter. The communication device 330 is configured to perform information transceiver communication according to the control of the processor 310 .

As a computer-readable storage medium, the memory 320 can be configured to store software programs, computer-executable programs and modules. As described in the embodiments of the present application, the memory 320 is applied to the program instructions/modules corresponding to the terminal node data feedback method (for example, data feedback The acquisition module 210, the first determination module 220, the second determination module 230 and the feedback module 240 in the device). The memory 320 may include a stored program area and a stored data area, where the stored program area may store an operating system and an application program required for at least one function; the stored data area may store data created according to the use of the terminal node, etc. In addition, the memory 320 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the memory 320 may further include memory located remotely relative to the processor 310, and these remote memories may be connected to the terminal node through a network. Examples of the above-mentioned networks include but are not limited to the Internet, intranets, local area networks, mobile communication networks and combinations thereof.

Embodiments of the present application also provide a storage medium, the storage medium stores a computer program, and when the computer program is executed by a processor, any of the data feedback methods described in the embodiments of the present application is implemented. The data feedback method includes: obtaining path loss information of a feedback channel; determining the power of a single feedback channel and the total power of the feedback channel in the time slot according to the path loss information; and determining the power of each feedback channel and the total power according to the path loss information. Determine the number of feedback channels supported by the time slot; transmit data to be fed back in the time slot according to the number of feedback channels.

The computer storage medium in the embodiment of the present application may be any combination of one or more computer-readable media. The computer-readable medium may be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium may be, for example, but is not limited to: an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections having one or more conductors, portable computer disks, hard drives, random access memory (RAM), read-only memory (Read Only Memory, ROM), Erasable Programmable Read Only Memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination of the above. A computer-readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave carrying computer-readable program code therein. Such propagated data signals may take many forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device .

Program code embodied on a computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.

Computer program code for performing operations of the present application may be written in one or more programming languages, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional A procedural programming language, such as the "C" language or similar programming language. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In situations involving remote computers, the remote computer can be connected to the user's computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as an Internet service provider through the Internet). connect).

The above descriptions are only exemplary embodiments of the present application and are not used to limit the protection scope of the present application.

Those skilled in the art will understand that the term user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.

Generally speaking, the various embodiments of the present application may be implemented in hardware or special purpose circuitry, software, logic, or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software that may be executed by a controller, microprocessor, or other computing device, although the application is not limited thereto.

Embodiments of the present application may be implemented by a data processor of the mobile device executing computer program instructions, for example in a processor entity, or by hardware, or by a combination of software and hardware. Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source code or object code.

Any block diagram of a logic flow in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. Computer programs can be stored on memory. The memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to Read-Only Memory (ROM), Random Access Memory (RAM), optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD)), etc. Computer-readable media may include non-transitory storage media. The data processor may be any device suitable for the local technical environment Types, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), programmable logic devices (Field-Programmable Gate Array) , FGPA) and processors based on multi-core processor architecture.

A detailed description of exemplary embodiments of the present application has been provided above, by way of illustrative and non-limiting examples. However, considering the accompanying drawings and claims, various modifications and adjustments to the above embodiments will be apparent to those skilled in the art without departing from the scope of the present application. Accordingly, the proper scope of the application will be determined from the claims.

Claims (10)

1. A data feedback method, applied to terminal nodes, characterized by including: Obtain the path loss information of the feedback channel; Determine the power of a single feedback channel and the total power of the feedback channel in the time slot according to the path loss information; Determine the number of feedback channels supported by the time slot according to the power of each feedback channel and the total power; Data to be fed back is transmitted in the time slot according to the number of feedback channels. 2. The method according to claim 1, characterized in that obtaining path loss information of the feedback channel includes: For the unicast feedback channel, the path loss value is calculated based on the reference signal reception power carried in the direct link measurement report fed back by the opposite end node and the unicast transmission power of the terminal node. 3. The method according to claim 1, characterized in that obtaining path loss information of the feedback channel includes: For the multicast feedback channel, calculate the path loss value based on the reference signal received power obtained by measuring the peer node and the multicast transmit power of the terminal node; The multicast transmission power is determined based on the maximum transmission power supported by the terminal node, the service priority, and the channel busy ratio measured at the time when the service is sent. 4. The method according to claim 3, characterized in that determining the power of a single feedback channel according to the path loss information includes: The power of the single feedback channel is determined based on the expected received power for demodulating the single feedback channel, the product of the path loss smoothing factor and the corresponding path loss value, and the product of the compensation value corresponding to the priority and the power adjustment factor. 5. The method according to claim 1, characterized in that determining the number of feedback channels supported by the time slot according to the power of each feedback channel and the total power includes: If the total power does not exceed the maximum transmission power supported by the terminal node, then the number of feedback channels is the total number of feedback channels in the time slot; The method also includes: The power of each feedback channel is multiplied by a power shift factor. 6. The method according to claim 1, characterized in that determining the number of feedback channels supported by the time slot according to the power of each feedback channel and the total power includes: If the total power exceeds the maximum transmission power supported by the terminal node, the data to be fed back in part of the feedback channels will be discarded according to the service priority from low to high until the sum of the powers of the remaining feedback channels does not exceed the maximum transmission power of the terminal node. Transmit power, and the number of feedback channels is the number of remaining feedback channels. 7. The method of claim 1, further comprising: If the power of the feedback channel corresponding to the highest service priority is greater than or equal to the maximum transmission power supported by the terminal node, then the number of feedback channels is 1; The method also includes: The power of the feedback channel corresponding to the highest service priority is limited to the maximum transmit power. 8. A data feedback method, applied to terminal nodes, characterized by including: The acquisition module is configured to obtain the path loss information of the feedback channel; A first determination module configured to determine the power of a single feedback channel and the total power of the feedback channel in the time slot based on the path loss information; The second determination module is configured to determine the number of feedback channels supported by the time slot based on the power of each feedback channel and the total power; A feedback module is configured to transmit data to be fed back in the time slot according to the number of feedback channels. 9. A terminal node, including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that when the processor executes the program, any of claims 8-11 is implemented. The data feedback method described in one item. 10. A computer-readable storage medium with a computer program stored thereon, characterized in that when the program is executed by a processor, the data feedback method according to any one of claims 1-7 is implemented.