Determination method, communication node, and storage medium

Abstract

The present application provides a determination method, a communication node, and a storage medium. The determination method comprises: determining the number N1 of feedback channels sent at the same time on one feedback opportunity, and determining first transmission power for feedback resource blocks in the determined N1 feedback channels; if the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and transmitting N2 common resource blocks corresponding to the N1 feedback channels at second transmission power is smaller than or equal to the maximum power of a terminal device, transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and transmitting the N2 common resource blocks corresponding to the N1 feedback channels at the second transmission power; otherwise, transmitting the feedback resource blocks in the N1 feedback channels at third transmission power, transmitting the N2 common resource blocks corresponding to the N1 feedback channels at fourth transmission power, and the total power of transmitting the feedback resource blocks and the common resource blocks being equal to the maximum power of the terminal device.

Description

A determination method, communication node and storage medium Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a determination method, a communication node, and a storage medium. Background Art

[0002] Direct communication, also known as sidelink (SL) communication, requires that certain SL signals / channels, including the feedback channel, meet occupied channel bandwidth (OCB) requirements. Currently, power control for the feedback channel only considers the resource blocks used to carry feedback information. The handling of common resource blocks remains a pressing technical challenge.

[0003] Summary of the Invention

[0004] The present application provides a determination method, a communication node, and a storage medium.

[0005] In the first aspect, an embodiment of the present application provides a determination method, including: determining the number N1 of feedback channels sent simultaneously at a feedback opportunity, and determining a first transmission power of the feedback resource blocks in the determined N1 feedback channels; if the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and transmitting the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is less than or equal to the maximum power of the terminal device, then transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power, and transmitting the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power; if the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and transmitting the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is greater than the maximum power of the terminal device, then transmitting the feedback resource blocks in the N1 feedback channels at a third transmission power, transmitting the N2 general resource blocks corresponding to the N1 feedback channels at a fourth transmission power, and the total power of transmitting the feedback resource blocks and the general resource blocks is equal to the maximum power of the terminal device.

[0006] In a second aspect, an embodiment of the present application provides a communication node, comprising: one or more processors; a storage device for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors implement a determination method as provided in an embodiment of the present application.

[0007] In a third aspect, an embodiment of the present application provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, any one of the methods in the embodiments of the present application is implemented.

[0008] With respect to the above embodiments and other aspects of the present application and their implementation, further description is provided in the accompanying drawings, detailed description and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG1 is a flow chart of a determination method provided in an embodiment of the present application;

[0010] FIG2 is a schematic diagram of the structure of a determination device provided in an embodiment of the present application;

[0011] FIG3 is a schematic structural diagram of a communication node provided in an embodiment of the present application. DETAILED DESCRIPTION

[0012] To make the purpose, technical solutions and advantages of this application more clear, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of this application can be combined with each other in any way.

[0013] The steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions. Also, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be performed in an order different from that shown here.

[0014] In this application, the terms "first", "second", etc. are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0015] Direct communication can also be called sidelink (SL) communication, and SL communication will be used to refer to all direct communications in the future. SL communication currently operates on licensed frequency bands or dedicated frequency bands. For example, vehicle to anything (V2X) communication can operate on frequency bands dedicated to the Internet of Vehicles. In recent years, with the development of SL communication, the demand for SL transmission in traditional unlicensed bands has become increasingly strong. Before SL transmission is performed in the unlicensed band, a channel access process, generally referred to as the Listen Before Talk (LBT) process, is required in accordance with relevant frequency band usage specifications to avoid interference with equipment in other systems. Generally, if the channel resources are determined to be idle within the detection time corresponding to the LBT process (i.e., LBT is successful), the terminal equipment (User Equipment, UE) can continue to send, otherwise, the UE needs to give up transmission.

[0016] In some areas, the use of unlicensed spectrum needs to meet the requirements of occupied channel bandwidth (OCB). That is, if a device wants to access a channel for transmission, the bandwidth of the transmitted signal must occupy at least 80% of the channel bandwidth. For example, when a channel is 20MHz, the transmitted signal is generally required to span at least 16MHz of bandwidth in the frequency domain. For some signals / channels of the SL, they must also meet the OCB requirements, including feedback channels, such as the physical sidelink feedback channel (PSFCH). The PSFCH is generally used to carry only a very small number of bits and occupies a very small bandwidth, such as a physical resource block (PRB). For the PSFCH, its transmission bandwidth needs to be changed to meet the OCB requirements, and its power control also needs to be modified to adapt to the new transmission bandwidth. In addition, considering that the UE can send multiple PSFCHs on multiple channels (i.e., channels), a comprehensive design of the PSFCH power control scheme on multiple channels is required.

[0017] According to current discussions within the 3rd Generation Partnership Project (3GPP), an interlace resource block (IRB) structure is required for PSFCH to meet OCB requirements. For example, an IRB consists of at least 10 PRBs. One approach is to divide the frequency domain resources used during PSFCH occasions into two categories: common RBs (Type I IRBs, also known as common resource blocks) and resources used to carry feedback information (Type II IRBs, also known as feedback resource blocks). For common RBs, all UEs can transmit PSFCH during these occasions, and all of them occupy the same common RBs to meet OCB requirements. This way, regardless of how many UEs transmit simultaneously, the overhead required to meet OCB requirements is limited to a single common RB. For feedback-carrying resources, resource mapping is typically used, allowing different UEs to use different resources to provide feedback. Combining these two resource types effectively manages OCB overhead and avoids significantly impacting PSFCH capacity.

[0018] However, the above method still has many problems to be solved. First, the current PSFCH power control only considers the PSFCH used to carry feedback information, and there is no consensus on how to handle common RBs.

[0019] To address the above technical issues, the present application provides a determination method. In an exemplary embodiment, FIG1 is a flow chart illustrating a determination method provided in an embodiment of the present application. The present application can be applied to determining the transmit power of common resource blocks and feedback resource blocks to implement processing of the common resource blocks and feedback resource blocks. The determination method provided in the present application can be applied to a determination device, which can be implemented by software and / or hardware and integrated into a communication node. The communication node can be a terminal device.

[0020] As shown in FIG1 , a determination method provided by an embodiment of the present application includes the following steps S110 to S130 .

[0021] In step S110, the number N1 of feedback channels sent simultaneously at one feedback opportunity is determined, and the first transmit power of the feedback resource blocks in the determined N1 feedback channels is determined.

[0022] The feedback channel may be a channel for performing feedback, such as PSFCH. The feedback timing may be considered as a timing for performing feedback.

[0023] The number of feedback channels determined in this operation may be N1.

[0024] The feedback resource block may be considered as a resource that carries feedback information. The first transmit power may be the transmit power corresponding to the feedback resource block, such as the determined transmit power of the feedback resource block.

[0025] This operation may determine the number N1 of feedback channels for simultaneously sending feedback, and then determine the first transmit power of the feedback resource blocks in the N1 feedback channels, so as to determine the transmit power of the feedback resource blocks and the common resource blocks based on the first transmit power.

[0026] In step S120, if the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and transmitting the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is less than or equal to the maximum power of the terminal device, then the feedback resource blocks in the N1 feedback channels are transmitted at the first transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at the second transmission power, and the operation is terminated.

[0027] The maximum power can be considered as the maximum transmit power of the communication node. The second transmit power can be considered as the power of transmitting the general resource block. The magnitude of the first transmit power and the second transmit power is not limited.

[0028] When the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and transmitting the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is less than or equal to the maximum power of the terminal device, the feedback resource blocks in the N1 feedback channels are transmitted at the first transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at the second transmission power.

[0029] In step S130, if the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is greater than the maximum power of the terminal device, then the feedback resource blocks in the N1 feedback channels are transmitted at a third transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at a fourth transmission power, and the total power of transmitting the feedback resource blocks and the general resource blocks is equal to the maximum power of the terminal device.

[0030] Transmitting the feedback resource blocks in the feedback channel with the first transmit power may mean setting the power of each feedback resource block in the N1 feedback channels to the first transmit power; transmitting the feedback channel with the third transmit power may mean setting the power of each feedback resource block in the N1 feedback channels to the third transmit power; transmitting the general resource blocks with the second transmit power may mean setting the power of each general resource block in the N2 general resource blocks to the second transmit power; transmitting the general resource blocks with the fourth transmit power may mean setting the power of each general resource block in the N2 general resource blocks to the fourth transmit power.

[0031] If the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is less than or equal to the maximum power of the terminal device, then the feedback resource blocks in the N1 feedback channels are transmitted at the first transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at the second transmission power; otherwise, the feedback resource blocks in the N1 feedback channels are transmitted at the third transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at the fourth transmission power, and the total power of transmitting the feedback resource blocks and the general resource blocks is equal to the maximum power of the terminal device.

[0032] When the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is greater than the maximum power of the terminal device, the feedback resource blocks in the N1 feedback channels are transmitted at a third transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at a fourth transmission power, and the total power of transmitting the feedback resource blocks and the general resource blocks is equal to the maximum power of the terminal device.

[0033] The third transmit power may be a power used to transmit the feedback resource block after updating the first transmit power. The fourth transmit power may be a power used to transmit the general resource block after updating the second transmit power.

[0034] After determining the first transmit power, this embodiment may determine the transmit power of the feedback resource block and the general resource block based on a comparison between the total power corresponding to the first transmit power and the second transmit power and the maximum power of the terminal device.

[0035] The determination method provided in the embodiment of the present application determines the transmission power of the feedback resource block and the general resource block by comparing the total power corresponding to the first transmission power and the second transmission power with the maximum power of the terminal device, thereby realizing the processing of the feedback resource block and the general resource block.

[0036] Based on the above embodiment, a modified embodiment of the above embodiment is proposed. It should be noted that, in order to simplify the description, only the differences from the above embodiment are described in the modified embodiment.

[0037] In one embodiment, the offset between the second transmit power and the first transmit power is a first offset configured by the network; the offset between the fourth transmit power and the third transmit power is a second offset configured by the network; and the first offset and the second offset are the same or different configurations.

[0038] In one embodiment, the third transmission power is X times the maximum power of the terminal device, where X is the ratio of the bandwidth of a feedback resource block to a first value, where the first value is the sum of the bandwidth of N1 feedback channels and m times the bandwidth of the N2 general resource blocks, where m is determined by a second offset configured by the network.

[0039] The offset between the second transmit power and the first transmit power may also be referred to as a ratio of the second transmit power to the first transmit power, and the corresponding first offset of the network configuration may also be referred to as a first ratio.

[0040] The offset between the third transmit power and the fourth transmit power may also be referred to as a ratio of the third transmit power to the fourth transmit power, and the corresponding second offset of the network configuration may also be referred to as a second ratio. It can be seen that the second ratio is the reciprocal of m.

[0041] In one embodiment, the determining of the first transmission power of the feedback resource block in the determined N1 feedback channels includes: determining the first transmission power of the feedback resource block in the determined N1 feedback channels to be one of the following: a fifth transmission power determined based on power control; Y times the usage power of the terminal device; the maximum or minimum value between the fifth transmission power and Y times the usage power of the terminal device.

[0042] This embodiment determines that the first transmit power is the fifth transmit power determined based on power control, or is Y times the power used by the UE, or determines that the first transmit power is the maximum or minimum value between the fifth transmit power and Y times the power used by the UE.

[0043] The power used by the terminal device can be considered as the maximum transmit power allocated to the feedback channel.

[0044] In one embodiment, the determination method also includes at least one of the following: the usage power of the terminal device is equal to the maximum power of the terminal device; the offset between the usage power of the terminal device and the maximum power of the terminal device is equal to the third offset configured by the network; Y is equal to the ratio of the bandwidth of a feedback resource block to the total bandwidth of the N1 feedback channels.

[0045] In one embodiment, determining the number N1 of feedback channels sent simultaneously at a feedback opportunity includes: determining that the number N1 of feedback channels sent simultaneously at a feedback opportunity is equal to M, or determining that the number N1 of feedback channels sent simultaneously at a feedback opportunity is equal to Nmax, or determining N1 feedback channels from M or Nmax feedback channels in order of priority of the feedback channels, wherein M is the number of feedback channels to be sent at the feedback opportunity, and Nmax is the maximum number of feedback channels that the terminal device can send simultaneously.

[0046] In one embodiment, the number N1 of feedback channels sent simultaneously at one feedback opportunity is determined to be the number of feedback channels to be sent at the feedback opportunity.

[0047] In one embodiment, the number N1 of feedback channels sent simultaneously at one feedback opportunity is determined to be the maximum number of feedback channels that the terminal device can send simultaneously.

[0048] In one embodiment, the number N1 of feedback channels sent simultaneously on a feedback opportunity is determined as follows: the number of feedback channels to be sent on the feedback opportunity or the maximum number of feedback channels that the terminal device can send simultaneously.

[0049] In one embodiment, N1 is greater than or equal to max(1, M k ), where M k The maximum number of feedback channels that can be determined according to the priority order of the feedback channels using the fifth transmit power without exceeding the operating power of the terminal device.

[0050] M k The maximum number of feedback channels that can be determined according to the priority order of the feedback channels using the fifth transmission power without exceeding the power used by the terminal device, also known as M k It is the maximum number of feedback channels that can be transmitted in the priority order of the feedback channels using the fifth transmission power without exceeding the usage power of the terminal device.

[0051] In one embodiment, the number of feedback resource blocks included in a feedback channel is a value configured by the network, or is the number of resource blocks occupied by the feedback channel.

[0052] In one embodiment, there is no limitation on the means for determining the transmit power based on power control. For example, the determination of the fifth transmit power generally enables power control based on path loss, such as PSFCH power control based on downlink (DL) or sidelink path loss, that is, the downlink power control parameter dl-P0-PSFCH is configured or provided.

[0053] The fifth transmission power corresponding to a feedback channel or a PRB of a feedback channel is denoted as P PSFCH,one , specifically, calculated in decibels, it can be:

[0054] P PSFCH,one =P O,PSFCH +10log 10 (M)+α PSFCH ·PL

[0055] Among them, P O,PSFCH Determined by the network configuration, it generally represents the level of received power per unit width expected by the receiver. PSFCH It is configured by the network or equal to 1, generally representing a path loss adjustment factor, M is the ratio of the bandwidth of a PRB or a feedback channel to the unit bandwidth, and PL is the path loss measured based on a reference signal (RS).

[0056] In one embodiment, determining the power of a PSFCH is equivalent to determining the power of a PSFCH PRB. A PSFCH PRB can also be called a dedicated PRB. For example, a PSFCH includes PRB, then the power of a PSFCH is the power of a PSFCH PRB It can be seen that when a PSFCH includes multiple PRBs, the power of each PRB is equal. When the number of PRBs included in the PSFCH is determined, the power of a PSFCH and the power of a PSFCH PRB can be converted to each other.

[0057] In one embodiment, It can be provided by the network or equal to the number of PRBs occupied by one PSFCH.

[0058] In this application, the configuration provided by the network includes network-side configuration, pre-configuration, protocol predefined values, etc., which will be collectively referred to as network configuration in the future.

[0059] For example, the above-mentioned determination of the fifth transmit power of a feedback resource block and the determination of the fifth transmit power of a feedback channel are essentially the same.

[0060] In one embodiment, the total power of the feedback resource blocks in the N1 feedback channels transmitted at the first transmit power and the N2 general resource blocks corresponding to the N1 feedback channels transmitted at the second transmit power can also be described, in decibels as follows: the total power of the N1 feedback channels transmitted at the first transmit power plus a power offset is less than or equal to the maximum power of the terminal device, wherein the power offset is the ratio of the total bandwidth of the N1 feedback channels to a first value, where the first value is the sum of the bandwidth of the N1 feedback channels and m times the bandwidth of the N2 general resource blocks. The m is determined by the first transmit power and the first offset of the second transmit power configured by the network.

[0061] In one embodiment, the present application can also be described as: determining the number N1 of feedback channels sent simultaneously at a feedback opportunity, and determining a first transmit power of feedback resource blocks in the determined N1 feedback channels; if the total power of the feedback resource blocks in the N1 feedback channels transmitted at the first transmit power is greater than or equal to the maximum power of the terminal device, transmitting the feedback resource blocks in the N1 feedback channels at a third transmit power, transmitting N2 general resource blocks corresponding to the N1 feedback channels at a fourth transmit power, and the total power of transmitting the feedback resource blocks and the general resource blocks is equal to the maximum power of the terminal device; if the total power of the feedback resource blocks in the N1 feedback channels transmitted at the first transmit power is less than the maximum power of the terminal device, transmitting the feedback resource blocks in the N1 feedback channels at the first transmit power, and transmitting N2 general resource blocks corresponding to the N1 feedback channels at a sixth transmit power, wherein the sixth transmit power is the smaller value of the second transmit power and the seventh transmit power, and the seventh transmit power is the maximum power of the terminal device minus the total power of the feedback resource blocks in the N1 feedback channels transmitted at the first transmit power, and the total power is divided equally among the N2 general resource blocks. Here we take linear values ​​as an example.

[0062] In one embodiment, the UE is scheduled to transmit M PSFCHs, and the maximum number of PSFCHs that can be transmitted is Nmax. Then the UE needs to determine the number N1 of PSFCHs to be finally transmitted and the transmission power of each of the N1 PSFCHs.

[0063] If path loss-based power control is enabled, the fifth transmit power of a PSFCH or a feedback PRB can be obtained. Here, the fifth transmit power of a PSFCH is taken as an example, which is recorded as P PSFCH,one .

[0064] If M does not exceed Nmax, and the power of sending M PSFCHs at the fifth transmit power level does not exceed the UE's used power, then N1 is equal to M, and the first transmit power of one PSFCH is equal to the fifth transmit power; otherwise, N1 PSFCHs are selected according to priority, and the first transmit power of one PSFCH is equal to min(P-10log 10 (N1),P PSFCH,one ), that is, the smaller value between the fifth transmit power and Y times the UE's used power P, where Y is equal to the reciprocal of N1.

[0065] In the case where M exceeds Nmax, Nmax PSFCHs are selected from M according to the priority; if the power of transmitting Nmax PSFCHs according to the fifth transmit power does not exceed the UE's used power, then N1 is equal to Nmax, and the first transmit power of a PSFCH is equal to the fifth transmit power; otherwise, N1 PSFCHs are selected according to the priority, and the first transmit power of a PSFCH is equal to min(P-10log 10 (N1),P PSFCH,one ), that is, the smaller value between the fifth transmit power and Y times the UE's used power P, where Y is equal to the reciprocal of N1.

[0066] No When path loss based power control is not enabled, the first transmit power of a PSFCH is equal to P-10log 10 (N1), that is, Y times the UE's used power P, where Y is equal to the reciprocal of N1.

[0067] If general resource blocks need to be sent in order to meet the OCB requirement, for example, sending only the N1 PSFCHs does not meet the OCB requirement, and N2 general resource blocks need to be sent additionally.

[0068] If the power of sending N1 PSFCHs according to the determined first transmit power and sending N2 general resource blocks at the second transmit power does not exceed the maximum power of the UE, then N1 PSFCHs are sent at the first transmit power and N2 general resource blocks are sent at the second transmit power.

[0069] Sending N1 PSFCHs at the first transmit power can also be called sending a feedback resource block at the first transmit power. As described in the above embodiment, taking the linear value as an example, if a PSFCH includes PRB, then the first transmit power of a PSFCH is the power of a feedback resource block (i.e., PSFCH PRB). times, taking decibel value as an example, the power of a feedback resource block plus It is the power of one PSFCH.

[0070] The second transmit power is related to the first transmit power, meaning the second transmit power can be calculated based on the first transmit power. For example, if the network configures a feedback resource block power and an offset value for a common resource block (offset), and the first transmit power of a feedback resource block is P1, then the second transmit power of a common resource block (P2) is equal to P1 + offset.

[0071] If the power of sending N1 PSFCHs according to the determined first transmit power and sending N2 general resource blocks at the second transmit power exceeds the maximum power of the UE, then N1 PSFCHs are sent at a third transmit power and N2 general resource blocks are sent at a fourth transmit power, where the third transmit power is X times the maximum power of the UE, where X is the ratio of the bandwidth of one PSFCH to a first value, where the first value is the sum of the bandwidth of the N1 feedback channels and m times the bandwidth of the N2 general resource blocks.

[0072] Sending N1 PSFCHs at the third transmit power may also be referred to as sending a feedback resource block at the third transmit power. As described in the above embodiment, taking the linear value as an example, if a PSFCH includes PRB, then the third transmission power of a PSFCH is the power of a feedback resource block (ie, PSFCH PRB). times, taking decibel value as an example, the power of a feedback resource block plus It is the power of one PSFCH.

[0073] The fourth transmit power is related to the third transmit power, meaning the fourth transmit power can be calculated based on the third transmit power. For example, if the network configures a feedback resource block power and an offset value for a common resource block, and the third transmit power of a feedback resource block is P3, then the second transmit power of a common resource block, P4, is equal to P3 + offset.

[0074] The value of m is determined by the offset. Generally, m is equal to 10^(offset / 10), or the equivalent offset is 10*10log 10 (m), for example, if m is equal to 0.5, then the power (linear value) of the general resource block is 0.5 times the power of the feedback resource block, that is, in decibel calculation, the power of the feedback resource block plus 10*log 10 (0.5) is equal to the power of the common resource block.

[0075] It can be seen that the power of a common resource block and the power of a PSFCH PRB have a specific relationship. For example, the power of a common resource block can be obtained by offsetting the power (decibel value) of a feedback resource block by x, or the ratio of the power (linear value) of a feedback resource block to the power of a common resource block is network configured.

[0076] The UE's used power is the total power used by the UE for feedback transmission. It can be equal to the UE's maximum power or equal to the power after the UE's maximum power is offset. The offset is configured by the network. For example, in decibels, the UE's maximum power minus 10dB represents the UE's used power. In linear terms, this represents 0.1 times the UE's maximum power.

[0077] In one embodiment, from the perspective of one PRB, the UE is scheduled to transmit M PSFCHs, and the maximum number of PSFCHs that can be transmitted is Nmax. Then the UE needs to determine the number of PSFCHs to be transmitted, N1, and the transmit power of each PSFCH in the N1 PSFCHs. Among them, the kth PSFCH in the N1 PSFCHs contains PSFCH PRBs.

[0078] When path loss-based power control is enabled, the fifth transmit power of a PSFCH PRB can be obtained, which is recorded as P PSFCH,one If M does not exceed Nmax, and the power of all PRBs included in M ​​PSFCHs transmitted at the fifth transmit power level does not exceed the UE's available power, then N1 is equal to M, and the first transmit power of a PSFCH PRB is equal to the fifth transmit power; otherwise (i.e., the power of all PRBs included in M ​​PSFCHs transmitted at the fifth transmit power level exceeds the UE's available power), N1 PSFCHs are selected according to priority, and the first transmit power of a PSFCH PRB is equal to min(P-10log 10 (N1, PRB ),P PSFCH,one ), where N 1，PRB is the number of PSFCH PRBs contained in N1 PSFCHs.

[0079] When path loss-based power control is enabled, the fifth transmit power of a PSFCH PRB can be obtained, which is recorded as P PSFCH,one If M exceeds Nmax, Nmax PSFCHs are selected from M according to the priority. If the power of transmitting Nmax PSFCHs according to the fifth transmit power does not exceed the power used by the UE, N1 is equal to Nmax, and the first transmit power of a PSFCH PRB is equal to the fifth transmit power. Otherwise (i.e., the power of transmitting Nmax PSFCHs according to the fifth transmit power exceeds the power used by the UE), N1 PSFCHs are selected according to the priority, and the first transmit power of a PSFCH PRB is equal to min(P-10log 10 (N 1，PRB ),P PSFCH,one ), where N 1，PRBis the number of PRBs included in N1 PSFCHs.

[0080] Without enabling path loss based power control, the first transmit power of a PSFCH PRB is equal to P-10log 10 (N 1，PRB ), P is the UE's usage power P.

[0081] If general resource blocks need to be sent in order to meet the OCB requirement, for example, sending only the N1 PSFCHs does not meet the OCB requirement, and N2 general resource blocks need to be sent additionally.

[0082] If the power of sending N1 PSFCHs according to the determined first transmit power and sending N2 general resource blocks at the second transmit power does not exceed the maximum power of the UE, then the N1 PSFCHs included in the N2 general resource blocks are sent at the first transmit power. 1，PRB PSFCH PRBs and N2 general resource blocks are sent at the second transmit power.

[0083] Taking linear values ​​as an example, if a PSFCH includes PRB, then the first transmit power of a PSFCH is the power of a feedback resource block (PSFCH PRB) times, taking decibel value as an example, the power of a feedback resource block plus It is the power of one PSFCH.

[0084] The second transmit power is related to the first transmit power, meaning the second transmit power can be calculated based on the first transmit power. For example, if the network configures a feedback resource block power and an offset value for a common resource block (offset), and the first transmit power of a feedback resource block is P1, the second transmit power of a common resource block (P2) is equal to P1 + offset.

[0085] When the power of sending N1 PSFCHs at the determined first power and sending N2 general resource blocks at the determined second power exceeds the maximum power of the UE, the N1 PSFCHs included in the N2 general resource blocks are sent at the determined third power. 1，PRB PSFCH PRBs and N2 general resource blocks are sent at a fourth transmit power; the third transmit power is X times the maximum power of the UE, where X is the ratio of the bandwidth of one PSFCH PRB to a first value, where the first value is the sum of the bandwidth of N1 feedback channels and m times the bandwidth of the N2 general resource blocks.

[0086] Sending N1 PSFCHs at the third transmit power may also be referred to as sending a feedback resource block (i.e., PSFCH PRB) at the third transmit power. As described in the above embodiment, taking the linear value as an example, if a PSFCH includes PRB, then the third transmission power of a PSFCH is the power of a feedback resource block (ie, PSFCH PRB). times, taking decibel value as an example, the power of a feedback resource block plus It is the power of one PSFCH.

[0087] The fourth transmit power is related to the third transmit power, meaning the fourth transmit power can be calculated based on the third transmit power. For example, if the network configures a feedback resource block power and an offset value for a common resource block, and the third transmit power of a feedback resource block is P3, then the second transmit power of a common resource block, P4, is equal to P3 + offset.

[0088] The value of m is determined by the offset. Generally, m is equal to 10^(offset / 10), or the equivalent offset is 10*10log 10 (m), for example, if m is equal to 0.5, then the power (linear value) of the general resource block is 0.5 times the power of the feedback resource block, that is, in decibel calculation, the power of the feedback resource block plus 10*log 10 (0.5) is equal to the power of the common resource block.

[0089] In one embodiment, if the PSFCHs to be sent exceed the capability of the UE, or the transmission power exceeds the maximum power or the used power of the UE, it may be necessary to select N1 PSFCHs for transmission according to the priority.

[0090] In the process of UE determining N1 PSFCH transmission, first, if there is a PSFCH carrying HARQ-ACK, the PSFCH carrying HARQ-ACK should be sent in priority order (priority value from small to large). Then, if there is a PSFCH carrying conflicting information, the PSFCH carrying conflicting information should be sent in priority order (priority value from small to large), and it should be ensured that Among them, for 1≤i≤8, M i is the number of PSFCHs with priority value i and carrying HARQ-ACK, for i>8, that is, 8 <i≤16,M i is the number of PSFCHs with a priority value of i-8 and carrying conflict information, where K is the maximum value that satisfies the following conditions. If no K that satisfies the following conditions can be found, K is equal to 0.

[0091] Send according to the fifth transmission power The maximum K value that can be obtained when the UE's power usage does not exceed 1 PSFCH.

[0092] In one embodiment, when measuring SL energy, the influence of PSFCH is generally considered. The SL energy here can be the received signal strength indication (RSSI) or the SL reference signal received power (RSRP).

[0093] For the measurement of SL energy of a time slot, if there are multiple alternative starting symbol positions on the time slot, then the SL energy measurement starts from the symbol after the last starting symbol position; otherwise, that is, there is only one starting symbol position, then it starts from the symbol after the starting symbol position, that is, the second SL symbol.

[0094] Alternatively, only when multiple start symbol positions are configured (multiple start symbols can be configured when operating in an unlicensed channel) and a timeslot does not contain a PSFCH symbol, the SL energy measurement starts from the symbol after the last start symbol position. Otherwise, the SL energy measurement starts from the symbol after the first or only start symbol position, that is, the second SL symbol. For example, if a timeslot contains a PSFCH symbol, the SL energy measurement starts from the symbol after the first start symbol position, that is, the second SL symbol.

[0095] Obviously, those skilled in the art should understand that the modules or steps of the present application described above can be implemented using a general-purpose computing device. They can be concentrated on a single computing device or distributed across a network consisting of multiple computing devices. Alternatively, they can be implemented using program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be fabricated into separate integrated circuit modules, or multiple modules or steps can be fabricated into a single integrated circuit module for implementation. Thus, the present application is not limited to any specific combination of hardware and software.

[0096] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

[0097] The determination method provided in this application can be considered as a signal power control method, which solves the power control problem when the Sidelink device sends PSFCH in the unlicensed frequency band to meet the OCB requirements: for different scenarios (i.e., with DL power control or without DL power control), there are the following methods: determining the power of PSFCH; determining the power of common RB.

[0098] In an exemplary embodiment, the present application further provides a determination device. FIG2 is a schematic diagram of the structure of a determination device provided in an embodiment of the present application. The determination device can be integrated into a communication node. The determination device includes a determination module 310, a first transmission module 320, and a second transmission module 330.

[0099] The determination module 310 is configured to determine the number N1 of feedback channels sent simultaneously at one feedback opportunity, and determine the first transmit power of the feedback resource blocks in the determined N1 feedback channels.

[0100] The first transmitting module 320 is configured to transmit the feedback resource blocks in the N1 feedback channels at the first transmission power and transmit the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power if the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and transmitting the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is less than or equal to the maximum power of the terminal device.

[0101] The second transmitting module 330 is configured to transmit the feedback resource blocks in the N1 feedback channels at a third transmission power and transmit the N2 general resource blocks corresponding to the N1 feedback channels at a fourth transmission power if the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and transmitting the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is greater than the maximum power of the terminal device, and the total power of transmitting the feedback resource blocks and the general resource blocks is equal to the maximum power of the terminal device.

[0102] The determination device provided in this embodiment is used to implement the determination method of the embodiment shown in FIG1 . The implementation principle and technical effects of the determination device provided in this embodiment are similar to those of the determination method of the embodiment shown in FIG1 , and are not described in detail here.

[0103] Based on the above embodiment, a modified embodiment of the above embodiment is proposed. It should be noted that, in order to simplify the description, only the differences from the above embodiment are described in the modified embodiment.

[0104] In one embodiment, the offset between the second transmit power and the first transmit power is a first offset configured by the network; the offset between the fourth transmit power and the third transmit power is a second offset configured by the network; and the first offset and the second offset are the same or different configurations.

[0105] In one embodiment, the third transmission power is X times the maximum power of the terminal device, where X is the ratio of the bandwidth of a feedback resource block to a first value, where the first value is the sum of the bandwidth of N1 feedback channels and m times the bandwidth of the N2 general resource blocks, where m is determined by a second offset configured by the network.

[0106] In one embodiment, the determination module 310 is specifically configured to determine that the first transmission power of the feedback resource block in the determined N1 feedback channels is one of the following: the fifth transmission power determined based on power control; Y times the usage power of the terminal device; the maximum or minimum value between the fifth transmission power and Y times the usage power of the terminal device.

[0107] In one embodiment, the determination device 310 is further configured to determine at least one of the following: the usage power of the terminal device is equal to the maximum power of the terminal device; the offset between the usage power of the terminal device and the maximum power of the terminal device is equal to the third offset configured by the network; Y is equal to the ratio of the bandwidth of a feedback resource block to the total bandwidth of the N1 feedback channels.

[0108] In one embodiment, the determination module 310 is specifically configured to: determine that the number N1 of feedback channels sent simultaneously at a feedback opportunity is equal to M, or determine that the number N1 of feedback channels sent simultaneously at a feedback opportunity is equal to Nmax, or determine N1 feedback channels from M or Nmax feedback channels according to the priority order of the feedback channels, wherein M is the number of feedback channels to be sent at the feedback opportunity, and Nmax is the maximum number of feedback channels that the terminal device can send simultaneously.

[0109] In one embodiment, N1 is greater than or equal to max(1, M k ), where M k The maximum number of feedback channels that can be determined according to the priority order of the feedback channels using the fifth transmit power without exceeding the operating power of the terminal device.

[0110] In one embodiment, the number of feedback resource blocks included in a feedback channel is a value configured by the network, or is the number of resource blocks occupied by the feedback channel.

[0111] In an exemplary embodiment, the present application also provides a communication node. FIG3 is a schematic diagram of the structure of a communication node provided in an embodiment of the present application. As shown in FIG3, the communication node provided in the present application includes one or more processors 31 and a storage device 32. The processor 31 in the communication node can be one or more. FIG3 uses one processor 31 as an example. The storage device 32 is used to store one or more programs, which are executed by the one or more processors 31, so that the one or more processors 31 implement the determination method described in the embodiment of the present application.

[0112] The communication node further comprises: a communication device 33 , an input device 34 and an output device 35 .

[0113] The processor 31 , storage device 32 , communication device 33 , input device 34 and output device 35 in the communication node may be connected via a bus or other means. FIG3 takes the bus connection as an example.

[0114] The input device 34 may be used to receive input digital or character information and generate key signal input related to user settings and function control of the communication node. The output device 35 may include a display device such as a display screen.

[0115] The communication device 33 may include a receiver and a transmitter. The communication device 33 is configured to perform information transmission and reception communication according to the control of the processor 31.

[0116] The storage device 32, as a computer-readable storage medium, can be configured to store software programs, computer executable programs, and modules, such as the program instructions / modules corresponding to the determination method described in the embodiments of the present application (for example, the determination module 310, the first reflection module 320, and the second transmission module 330 in the determination device). The storage device 32 may include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function; and the data storage area may store data created according to the use of the communication node, etc. In addition, the storage device 32 may include a high-speed random access memory and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other non-volatile solid-state storage device. In some embodiments, the storage device 32 may further include a memory remotely arranged relative to the processor 31, and these remote memories may be connected to the communication node via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0117] In an exemplary embodiment, the embodiment of the present application further provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the embodiments of the present application is implemented. The storage medium stores a computer program, and when the computer program is executed by the processor, the determination method described in any one of the embodiments of the present application is implemented, including: determining the number N1 of feedback channels sent simultaneously at a feedback opportunity, determining a first transmit power of a feedback resource block in the determined N1 feedback channels; if the total power of transmitting the feedback resource block in the N1 feedback channel at the first transmit power and transmitting the N2 general resource blocks corresponding to the N1 feedback channel at the second transmit power is less than is greater than or equal to the maximum power of the terminal device, then the feedback resource blocks in the N1 feedback channels are transmitted at a first transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at a second transmission power; if the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is greater than the maximum power of the terminal device, then the feedback resource blocks in the N1 feedback channels are transmitted at a third transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at a fourth transmission power, and the total power of transmitting the feedback resource blocks and the general resource blocks is equal to the maximum power of the terminal device.

[0118] The computer storage medium of the embodiment of the present application can adopt any combination of one or more computer-readable media.Computer-readable media can be computer-readable signal media or computer-readable storage media.Computer-readable storage media can be, for example, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or devices, or any combination of the above.More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connection with one or more wires, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM), flash memories, optical fibers, portable CD-ROMs, optical storage devices, magnetic storage devices, or any suitable combination of the above.Computer-readable storage media can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0119] 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. Such a propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium that can transmit, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0120] The program code contained on the computer-readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wire, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

[0121] The computer program code for performing the operations of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and also conventional procedural programming languages ​​such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (e.g., using an Internet service provider to connect via the Internet).

[0122] The above description is merely an exemplary embodiment of the present application and is not intended to limit the scope of protection of the present application.

[0123] It will be understood by those skilled in the art that the term terminal equipment covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a car-mounted mobile station.

[0124] In general, various embodiments of the present application may be implemented in hardware or dedicated circuits, 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 can be executed by a controller, microprocessor, or other computing device, although the present application is not limited thereto.

[0125] Embodiments of the present application may be implemented by executing computer program instructions by a data processor of a mobile device, for example, in a processor entity, or by hardware, or by a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages.

[0126] The block diagram of any logical flow in the drawings of the present application may represent program steps, or may represent interconnected logical circuits, modules and functions, or may represent a combination of program steps and logical circuits, modules and functions. A computer program may be stored on a 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, a read-only memory (ROM), a random access memory (RAM), an optical storage device and system (a digital versatile disc (DVD) or a compact disk (CD)). Computer-readable media may include non-transient storage media. A data processor may be of any type suitable for the local technical environment, such as, but not limited to, a general-purpose computer, a special-purpose computer, a microprocessor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), and a processor based on a multi-core processor architecture.

[0127] The above description of exemplary embodiments of the present application has been provided by way of exemplary and non-limiting examples. However, various modifications and adaptations of the above embodiments will be apparent to those skilled in the art, when considered in conjunction with the accompanying drawings and the appended claims, without departing from the scope of the present application. Therefore, the proper scope of the present application will be determined by reference to the appended claims.

Claims

1. A determination method, comprising: Determine the number N1 of feedback channels sent simultaneously at one feedback opportunity, and determine the first transmit power of feedback resource blocks in the determined N1 feedback channels; If the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmit power and transmitting the N2 general resource blocks corresponding to the N1 feedback channels at the second transmit power is less than or equal to the maximum power of the terminal device, the feedback resource blocks in the N1 feedback channels are transmitted at the first transmit power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at the second transmit power; If the total power of transmitting the feedback resource blocks in the N1 feedback channels at the first transmission power and the N2 general resource blocks corresponding to the N1 feedback channels at the second transmission power is greater than the maximum power of the terminal device, the feedback resource blocks in the N1 feedback channels are transmitted at a third transmission power, and the N2 general resource blocks corresponding to the N1 feedback channels are transmitted at a fourth transmission power, and the total power of transmitting the feedback resource blocks and the general resource blocks is equal to the maximum power of the terminal device.

2. The method according to claim 1, wherein: The offset between the second transmit power and the first transmit power is a first offset configured by the network, the offset between the fourth transmit power and the third transmit power is a second offset configured by the network, and the first offset and the second offset are the same or different configurations.

3. The method according to claim 1 or 2, wherein: The third transmission power is X times the maximum power of the terminal device, where X is the ratio of the bandwidth of a feedback resource block to a first value, where the first value is the sum of the bandwidth of the N1 feedback channels and m times the bandwidth of the N2 general resource blocks, where m is determined by a second offset configured by the network.

4. The method according to claim 1, wherein determining the first transmit power of the feedback resource blocks in the determined N1 feedback channels comprises: Determine that a first transmit power of the feedback resource block in the determined N1 feedback channels is one of the following: a fifth transmit power determined based on the power control; Y times the power used by the terminal equipment; The maximum or minimum value between the fifth transmission power and Y times the power used by the terminal device.

5. The method according to claim 4, further comprising at least one of the following: The usage power of the terminal device is equal to the maximum power of the terminal device; The offset between the used power of the terminal device and the maximum power of the terminal device is equal to the third offset configured by the network; Y is equal to the ratio of the bandwidth of one feedback resource block to the total bandwidth of the N1 feedback channels.

6. The method according to claim 1, wherein: Determining the number N1 of feedback channels sent simultaneously at one feedback opportunity includes: Determine that the number N1 of feedback channels sent simultaneously at one feedback opportunity is equal to M, or Determine that the number of feedback channels N1 sent simultaneously at one feedback opportunity is equal to Nmax, or Determine N1 feedback channels from M or Nmax feedback channels according to the priority order of the feedback channels, Among them, M is the number of feedback channels to be sent at the feedback opportunity, and Nmax is the maximum number of feedback channels that the terminal device can send simultaneously.

7. The method according to claim 6, wherein: N1 is greater than or equal to max(1,M k ), where M k The maximum number of feedback channels that can be determined according to the priority order of the feedback channels using the fifth transmission power without exceeding the usage power of the terminal device.

8. The method according to claim 1, wherein: The number of feedback resource blocks included in a feedback channel is a value configured by the network, or is the number of resource blocks occupied by the feedback channel.

9. A communication node, comprising: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method according to any one of claims 1 to 8.

10. A storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the method according to any one of claims 1 to 8.

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