CN111836352B - Power control method and terminal for physical side link feedback channel - Google Patents
Power control method and terminal for physical side link feedback channel Download PDFInfo
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- CN111836352B CN111836352B CN201910775656.3A CN201910775656A CN111836352B CN 111836352 B CN111836352 B CN 111836352B CN 201910775656 A CN201910775656 A CN 201910775656A CN 111836352 B CN111836352 B CN 111836352B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/248—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where transmission power control commands are generated based on a path parameter
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Abstract
The invention provides a power control method and a terminal of a physical side link feedback channel, and relates to the technical field of communication. The power control method of the physical side link feedback channel comprises the following steps: acquiring a first distance between the receiving terminal and the sending terminal; and determining the transmission power of the receiving terminal on a physical sidelink feedback channel PSFCH according to the first distance. According to the scheme, the sending power of each receiving terminal on the PSFCH is determined based on the distance between the receiving terminal and the sending terminal, and the sending terminal is ensured to receive the feedback information of each receiving terminal on the PSFCH with similar power, so that the interference between the UE and the IBE interference are reduced, and the receiving success rate of the feedback information is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a power control method and a terminal for a physical sidelink feedback channel.
Background
The current sidelink (sidelink) transmission mainly includes broadcast (broadcast), multicast (groupcast) and unicast (unicast) transmission forms. For multicast communication, the method is a one-to-many communication method, and when a Hybrid automatic repeat request (HARQ) function is turned on, HARQ retransmission may be caused if any receiving end user in a group does not receive the HARQ correctly. The HARQ feedback of the receiving terminal is sent on the physical sidelink feedback channel PSFCH, and in the related art, there is no explicit method for determining the sending power of the receiving terminal on the PSFCH.
Disclosure of Invention
The embodiment of the invention provides a power control method and a terminal of a physical sidelink feedback channel, which aim to solve the problem that the sending power of a PSFCH (power control channel) cannot be determined in the related technology.
In order to solve the technical problem, the invention adopts the following scheme:
in a first aspect, an embodiment of the present invention provides a method for controlling power of a physical sidelink feedback channel, which is applied to a receiving terminal, and includes:
acquiring a first distance between the receiving terminal and the sending terminal;
and determining the transmission power of the receiving terminal on a physical sidelink feedback channel PSFCH according to the first distance.
In a second aspect, an embodiment of the present invention further provides a terminal, where the terminal is a receiving terminal, and the terminal includes:
the first acquisition module is used for acquiring a first distance between the receiving terminal and the sending terminal;
and a first determining module, configured to determine, according to the first distance, a transmission power of the receiving terminal on a physical sidelink feedback channel PSFCH.
In a third aspect, an embodiment of the present invention provides a terminal, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for power control of a physical sidelink feedback channel as described above.
In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned power control method for a physical sidelink feedback channel are implemented.
The invention has the beneficial effects that:
according to the scheme, the sending power of each receiving terminal on the PSFCH is determined based on the distance between the receiving terminal and the sending terminal, and the sending terminal is ensured to receive the feedback information of each receiving terminal on the PSFCH with similar power, so that the interference between the UE and the IBE interference are reduced, and the receiving success rate of the feedback information is improved.
Drawings
Fig. 1 is a flowchart illustrating a method for power control of a physical sidelink feedback channel according to an embodiment of the present invention;
FIG. 2 is a second flowchart illustrating a method for power control of a physical sidelink feedback channel according to an embodiment of the present invention;
fig. 3 is a third flowchart illustrating a power control method for a physical sidelink feedback channel according to an embodiment of the present invention;
FIG. 4 is a fourth flowchart illustrating a power control method for a physical sidelink feedback channel according to an embodiment of the present invention;
fig. 5 shows a block diagram of a terminal according to an embodiment of the invention;
fig. 6 shows a block diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
In making the description of the embodiments of the present invention, some concepts used in the following description will first be explained.
A Sidelink (Sidelink) refers to a link between a User Equipment (UE) and a UE, which performs direct data transmission without passing through a network. The transmitting UE transmits Sidelink Control Information (SCI) through a PSCCH (Physical Sidelink Control Channel), and transmits data through a PSCCH (Physical Sidelink data Channel). After receiving the control information, the receiving UE demodulates the control information, determines the size of the transmission block, the modulation coding mode, the allocated resources and the like according to the demodulated control information, and then receives and demodulates data on the corresponding time frequency resources according to the information.
The invention provides a power control method and a terminal of a physical sidelink feedback channel, aiming at the problem that the transmission power of a PSFCH cannot be determined in the related technology.
As shown in fig. 1, an embodiment of the present invention provides a method for controlling power of a physical sidelink feedback channel, which is applied to a receiving terminal, and includes:
And determining a first distance between the receiving terminal and the sending terminal according to the position information of the receiving terminal and the position information of the sending terminal. The sending terminal sends data to the receiving terminal through a Physical Sidelink shared Channel (psch), the location Information of the sending terminal is indicated by Sidelink Control Information (SCI) carried in the psch, and the receiving terminal calculates a first distance between the receiving terminal and the sending terminal based on the received location Information of the sending terminal and the location Information of the receiving terminal.
And step 102, determining the transmission power of the receiving terminal on a physical sidelink feedback channel PSFCH according to the first distance.
For multicast communication, the receiving terminal transmits HARQ feedback corresponding to PSSCH on PSFCH, the transmitting power for transmitting the HARQ feedback is determined according to the first distance between the receiving terminal and the transmitting terminal, and the transmitting terminal can be ensured to receive feedback information of each receiving terminal on PSFCH with similar power, so that interference between UE and In-Band Emission (IBE) interference are reduced, and the receiving success rate of the feedback information is improved.
Optionally, the transmission power of the receiving terminal at the PSFCH may be determined based on a mapping relationship between the distance between the receiving terminal and the transmitting terminal and the PSFCH transmission power; the transmission power of the PSFCH may also be adjusted on the basis of the basic transmission power by establishing an association between the distance or the distance variation value between the receiving terminal and the transmitting terminal and the power adjustment candidate value. The implementation of step 102 is described below by way of specific embodiments.
In the first mode, the transmission power of the PSFCH is determined based on the mapping relationship between the distance between the receiving terminal and the transmitting terminal and the transmission power of the PSFCH.
Specifically, as shown in fig. 2, the step 102 includes:
It should be noted that the mapping relationship may be predefined for a protocol, or may be preconfigured by a control node, where the control node includes: a base station, a Road Side Unit (RSU), a relay (relay), a sidelink, and the like.
The distance and the PSFCH transmission power may be mapped as follows: the distance is linearly related or proportional to the transmit power of the PSFCH; alternatively, the distance within one length is mapped to one transmission power.
when the receiving terminal determines the transmitting power of the receiving terminal at the PSFCH according to the mapping relationship, first, a first transmitting power corresponding to the first distance is determined according to the mapping relationship, and the first transmitting power cannot be directly used as the actual transmitting power of the PSFCH.
Optionally, when determining the transmission power of the receiving terminal at the PSFCH according to the first transmission power, the receiving terminal further needs to determine a power adjustment window of the PSFCH, and determines the transmission power of the receiving terminal at the PSFCH according to a value range of the power adjustment window and the first transmission power. In multicast communication, a power adjustment window is associated with the transmit power of a PSFCH. The range of the power adjustment window is [ min _ power (minimum power), max _ power (maximum power) ], and the receiving terminal adjusts the transmission power of the PSFCH within the power adjustment window.
The power adjustment window may be configured by a control node, or may be negotiated directly between a receiving terminal and a transmitting terminal, or defined or preconfigured by a protocol, etc. Wherein the control node, for example: the base station, the RSU, the relay, the UE which controls other UE on the sidelink, etc.; when the power adjustment window is obtained by direct negotiation between the receiving terminal and the transmitting terminal, the transmitting terminal configures through SCI indication or sidelink Radio Resource Control (RRC).
Optionally, the value range of the power adjustment window is determined according to first information; the first information includes at least one of: quality of Service (QoS) requirements of transmission information, QoS requirements of feedback information, interference environment (e.g., degree of interference), operating scenario (e.g., urban area, highway, etc.), link congestion condition, Modulation and Coding Scheme (MCS) used for associated psch transmission, number of layers, UE capability, historical HARQ feedback information, location of PSFCH resources, PSFCH format, moving speed of terminal, and moving direction of terminal.
It should be noted that the size (length) of the power adjustment window may be fixed, for example, determined by protocol pre-definition or network pre-configuration; the window size may also be variable, for example, dynamically adjusted based on QoS requirements (priority, communication range, or reliability, etc.) or MCS used for the associated psch transmission. Further, the value of the minimum value min _ power of the power adjustment window may be fixed, for example, to a default value of 0 w; the min _ power value may also be variable, and min _ power is not less than 0 w.
Determining a value range of the power adjustment window according to the first information, for example: when the communication range of the service exceeds a preset value, max _ power is equal to the maximum transmission power of the UE; alternatively, min _ power may be related to QoS of the service, such as the higher the QoS priority, the larger the min _ power value; alternatively, min _ power is related to the work scenario, such as: the min _ power of an urban area is greater than the min _ power of an expressway, and how to judge whether the urban area or the high-speed scene can be determined by interference measurement, Reference Signal Receiving Power (RSRP) measurement, or the speed of the UE.
Specifically, determining the transmission power of the receiving terminal on the PSFCH according to the value range of the power adjustment window and the first transmission power includes:
if the first transmission power is within the value range of the power adjustment window, the first transmission power is the transmission power of the receiving terminal on the PSFCH; if the first transmission power is greater than the maximum value of the power adjustment window, the maximum value is the transmission power of the receiving terminal on the PSFCH, wherein the maximum value is less than or equal to the maximum transmission power of the receiving terminal; and if the first transmission power is smaller than the minimum value of the power adjustment window, the minimum value is the transmission power of the receiving terminal on the PSFCH.
The following describes an implementation process of the first mode with reference to a specific embodiment.
Example one
Suppose that: the terminal carries out sidelink multicast communication, and the communication range of a certain multicast service is 400 m. The value range of the power adjustment window of the PSFCH is determined to be [3dBm, 20dBm ], i.e. about [0.005w, 0.1w ] according to the QoS requirement. Assuming that the mapping relationship between the distance between the receiving terminal and the transmitting terminal and the PSFCH transmission power is linear, it is expressed by the formula:
wherein x represents the actual distance between the receiving terminal and the transmitting terminal, and y represents the transmission power of the PSFCH; 0.2 is the maximum transmission power of the receiving terminal 0.2w, namely 23 dBm; 500 is the cutoff point N of the distance between the receiving terminal and the transmitting terminal at the maximum transmission power.
Taking the transmitting terminal as the UE1, and the receiving terminals as the UE2, the UE3, and the UE4 as examples, after the UE2/UE3/UE4 receive the multicast PSSCH of the UE1, the UE2/UE3/UE4 obtains the distances between the UE1 and the UE2/UE3/UE4 as 100m, 10m, and 600m, respectively, based on the location information of the UE1 and the location information of itself in the SCI of the current transmission.
UE2/UE3/UE4 calculates the transmit power of the PSFCH based on the distance and the linear relationship:
a) substituting the distance between the UE1 and the UE2 into the above formula to obtain y2 being 0.04w, and y2 being within the PSFCH power adjustment window range, the transmission power of the UE2 in the PSFCH is 0.04w and is about 16 dBm;
b) substituting the distance between the UE1 and the UE3 into the above formula to obtain y3 being 0.004w, and y3 being smaller than the minimum value of the power adjustment window, the transmission power of the UE3 at the PSFCH is the minimum value of the power adjustment window, i.e., 0.005w, which is about 7 dBm;
c) if the distance between the UE1 and the UE4 is substituted into the above formula to obtain y4 being 0.24w and y4 being greater than the maximum value of the power adjustment window, the transmission power of the UE4 in the PSFCH is about 23dBm, which is 0.2w, which is the maximum value of the power adjustment window.
And secondly, adjusting the transmission power of the PSFCH on the basis of the basic transmission power by establishing an association relation between the distance between the receiving terminal and the transmitting terminal and the power adjustment candidate value.
Optionally, when determining the transmission power of the receiving terminal at the PSFCH, the receiving terminal further needs to determine the base transmission power of the PSFCH. The base transmit power is determined from second information, the second information including at least one of: downlink path loss, sidelink path loss, reference signal received power, RSRP, QoS requirements for transmission information, QoS requirements for feedback information, interference environment, operating scenario, link congestion condition, modulation and coding strategy, MCS, and number of layers used for associated psch transmission.
Determining the base transmit power from the second information, e.g.:
calculating the basic transmitting power of the PSFCH based on the power control rule of the PSCCH or the PSSCH channel by using the measured sidelink path loss;
or, calculating the basic transmitting power of the PSFCH based on the power control rule of the PSCCH or PSSCH channel by using the measured downlink path loss;
or estimating the path loss based on the RSRP value measured on the Channel State Information-Reference Signal (CSI-RS) with fixed transmission power, and then calculating the basic transmission power of the PSFCH based on the power control rule of the PSCCH or the PSSCH Channel;
alternatively, one or more MCS levels correspond to a base transmit power of one PSFCH.
Further, as shown in fig. 3, the step 102 includes:
determining the first power adjustment value of the PSFCH first requires determining a power adjustment candidate value of the PSFCH. The power adjustment candidate may be configured by a control node (e.g., a base station, RSU, relay, UE controlling other UEs on sidelink, etc.), may be directly negotiated between a receiving terminal and a transmitting terminal (the transmitting terminal is configured by SCI indication or sidelink RRC), or may be predefined or preconfigured by a protocol.
It is worth noting that the number of power adjustment candidates (precision or granularity) may be fixed, e.g. determined by protocol definition or network configuration; it may also be variable, for example: the number (precision or granularity) of the power adjustment candidate values is related to at least one of QoS requirements of transmission information, QoS requirements of feedback information (such as communication range, priority or reliability, etc.), interference environment, working scenario (such as urban area or highway), link congestion condition (CBR (Channel busy Ratio) or CR (Channel occupancy Ratio) measurement result, etc.), MCS used for associated psch transmission, number of layers, UE capability, historical HARQ feedback information, location of pscch resource, pscch format, speed of terminal, moving direction of terminal, etc.
After the receiving terminal determines the power adjustment candidate value, acquiring an association relation between a distance and the power adjustment candidate value; the association may be predefined or preconfigured by a protocol; and determining a first power adjustment value corresponding to the first distance from the power adjustment candidate values according to the incidence relation.
And the receiving terminal superposes the first power adjustment value on the basis of the basic transmitting power to obtain the actual transmitting power of the PSFCH. For example: the distance between the receiving terminal and the sending terminal is smaller, a negative adjustment value is selected as the first power adjustment value, and the determined first power adjustment value is added on the basis of the basic transmitting power (the smaller the distance is, the smaller the PSFCH transmitting power is), namely the transmitting power of the receiving terminal at the PSFCH. It should be noted that the transmission power of the receiving terminal at the PSFCH is less than or equal to the maximum transmission power of the receiving terminal.
The following describes the implementation process of the second mode with reference to a specific embodiment.
Example two
Suppose that: the terminal carries out sidelink multicast communication, and the communication range of a certain multicast service is 500 m. Determining a set of PSFCH power adjustment candidate values to be (+5dB, +3dB, +1dB, -1dB, -3dB) according to QoS requirements;
the following association relationship exists between the distance between the receiving terminal and the transmitting terminal and the power adjustment candidate value:
the distance (0, 100m) between the receiving terminal and the transmitting terminal corresponds to a power adjustment value of-3 dB;
the distance (100, 200m) between the receiving terminal and the transmitting terminal corresponds to a power adjustment value of-1 dB;
the distance (200, 300m) between the receiving terminal and the transmitting terminal corresponds to the power adjustment value +1 dB;
the distance (300, 400m) between the receiving terminal and the transmitting terminal corresponds to a power adjustment value of +3 dB;
the distance (400, 500m) between the receiving terminal and the transmitting terminal corresponds to the power adjustment value +5 dB.
Taking the sending terminal as the UE1, and the receiving terminals as the UE2, the UE3, and the UE4 as examples, after the UE2/UE3/UE4 receive the multicast PSSCH of the UE1, the UE2/UE3/UE4 obtains the distances between the UE1 and the UE2/UE3/UE4 as 230m, 10m, and 460m, respectively, based on the location information of the UE1 and the location information of itself in the SCI of the current transmission.
UE2/UE3/UE4 determines the base transmit power of the PSFCH to be 17dBm based on the MCS level of the associated PSSCH traffic.
UE2/UE3/UE4 determines the PSFCH transmit power based on the distance and the above association: adding a corresponding PSFCH power adjustment value on the basis of the PSFCH basic transmitting power:
a) the transmission power of the UE2 at the PSFCH is 17dBm +1dB ═ 18 dBm;
b) the transmission power of the UE3 at the PSFCH is 17dBm-3dB ═ 14 dBm;
c) the UE4 has a transmit power of 17dBm +5dB ═ 22dBm at the PSFCH.
And thirdly, adjusting the transmission power of the PSFCH on the basis of the basic transmission power by establishing an incidence relation between a variation value of the distance between the receiving terminal and the transmitting terminal and the power adjustment candidate value.
Optionally, when determining the transmission power of the receiving terminal at the PSFCH, the receiving terminal needs to obtain a second transmission power of the receiving terminal at the PSFCH during the last sidelink communication. During multicast communication, the receiving terminal records the last transmission power on the same PSFCH link, where the second transmission power is: and relative to the current time, the receiving terminal transmits the power at the PSFCH in the last multicast communication. If the time interval between the current transmission and the last transmission exceeds the timer with the length of N, it is determined that the second transmission power of the PSFCH in the last multicast communication does not exist, and the receiving terminal does not determine the transmission power of the currently transmitted PSFCH using this method.
Further, as shown in fig. 4, the step 102 includes:
Determining the second power adjustment value of the PSFCH first requires determining a power adjustment candidate value of the PSFCH. The power adjustment candidate may be configured by the control node, may be directly negotiated between the receiving terminal and the transmitting terminal, or may be predefined or preconfigured by a protocol. The number (precision or granularity) of the power adjustment candidates may be fixed or variable. It should be noted that the attribute and the configuration method of the power adjustment candidate value are the same as those in the second mode, and are not described again here to avoid repetition.
When the receiving terminal determines the second power adjustment value of the PSFCH, it needs to obtain an association relationship between the change value of the distance between the receiving terminal and the sending terminal and the power adjustment candidate value, where the association relationship may be predefined or preconfigured for a protocol; specifically, the receiving terminal may calculate the receiving and transmitting end distance based on the location information of the transmitting terminal and the location information of the receiving terminal, and for multiple multicast communications, the receiving terminal may record the receiving and transmitting end distance of the last multicast communications, so that a variation value of the receiving and transmitting end distance may be obtained.
And the receiving terminal acquires the last time of the link communication to the current time of the link communication, determines a second power adjustment value corresponding to the first change value in the power adjustment candidate values according to the incidence relation.
And taking the second transmission power as a basic value for adjusting the transmission power of the PSFCH, and the receiving terminal superposes the second power adjustment value on the basis of the second transmission power to obtain the actual transmission power of the PSFCH. It should be noted that the transmission power of the receiving terminal at the PSFCH is less than or equal to the maximum transmission power of the receiving terminal.
The implementation process of determining the transmission power of the receiving terminal at the PSFCH according to the distance between the receiving terminal and the transmitting terminal in the embodiment of the present invention is described in three ways. Optionally, after determining the transmission power of the receiving terminal at the PSFCH, in order to improve the reliability of the parameters, a power boost value of X dB may be superimposed on the determined transmission power. Specifically, acquiring, by the receiving terminal, a power boost value of the PSFCH; superimposing the power boost value on the transmit power of the PSFCH. It should be noted that the value X dB of the power boost value may be predefined or preconfigured for the protocol, such as: configured by the control node.
The above embodiment is directed to a method for determining the transmission power of a receiving terminal at the PSFCH for one transmitting terminal. When the number of the transmitting terminals is multiple, the receiving terminal needs to further determine the actual transmission power at the PSFCH for each transmitting terminal.
Optionally, when there are multiple sending terminals, the method further includes:
when a plurality of transmitting terminals are provided, acquiring the sum of the transmitting power of the receiving terminal aiming at the PSFCH of the plurality of transmitting terminals; and reducing the transmission power of the PSFCHs when the sum of the transmission power is larger than the maximum transmission power of the receiving terminal.
It should be noted that, when there are a plurality of the transmitting terminals, it is further required to ensure that the sum of the transmission powers of the receiving terminal on the PSFCH for each transmitting terminal is not greater than the maximum transmission power of the receiving terminal. Specifically, after determining the transmit power of the receiving terminal on the PSFCH according to the distance according to the method in the above embodiment, if the sum of the powers of the PSFCH links exceeds the maximum transmit power of the receiving terminal, the transmit power of each PSFCH link needs to be reduced in an equal proportion. The manner of the equal scale reduction is as follows:
a) the manner of equal scaling down may be: based on the ratio of the distances between the receiving terminal and the respective transmitting terminals.
For example: the distances between the receiving terminal and the transmitting terminal of the 4 PSFCH links are 100, 150 and 200 meters, respectively. For a PSFCH link 1, with a distance of 100 meters, the actual transmit power of the PSFCH is 100/(100+150+150+200) × 0.2, which is equal to about 0.03334 watts, i.e., 15.23 dBm.
b) The manner of equal scaling down may be: the ratio of the transmit power calculated based on each PSFCH link.
For example: the calculated transmit powers of the 4 PSFCH links are 20, 15 and 20dBm, respectively. For PSFCH link 1, the transmit power of the PSFCH link is 20dBm, and the actual transmit power of the PSFCH is 0.1/(0.1+0.032+0.032+0.1) × 0.2, which is equal to about 0.076 watts, i.e., 18.8 dBm.
It should be noted that all the above power values need to be converted into linear values, for example, a linear value of 20dBm is 0.1 watt.
Optionally, when there are multiple sending terminals, the method further includes:
when the number of the transmitting terminals is multiple, distributing transmitting power for the PSFCHs according to third information; the sum of the transmit powers of the plurality of PSFCHs is less than or equal to the maximum transmit power of the receiving terminal.
The third information includes at least one of: quality of service (QoS) requirements for transmission information, QoS requirements for feedback information, link congestion conditions, Modulation and Coding Strategies (MCS) for associated PSSCH transmission, number of layers, historical hybrid automatic repeat request (HARQ) feedback information, and distance between the receiving terminal and the transmitting terminal.
In this embodiment, after determining the transmission power of the receiving terminal on the PSFCH according to the distance according to the method in the above embodiment, power allocation is performed according to at least one item of the third information, and the total transmission power of the receiving terminal on the PSFCH is not greater than the maximum transmission power of the receiving terminal.
Allocating transmit power for the plurality of PSFCHs according to the third information, for example: preferentially distributing power to PSFCHs with high service priority; or preferentially distributing power to the PSFCH with the short distance between the receiving terminal and the transmitting terminal; or preferentially allocating power to the PSFCH with high service reliability requirement.
It should be noted that if the receiving terminal reaches the maximum transmission power of the receiving terminal at the total transmission power of the PSFCHs, but there are PSFCHs to which no power is allocated, these PSFCHs (which may be of low traffic priority or of long distance from the receiving terminal to the transmitting terminal, etc.) do not allocate power, i.e., drop.
After determining the transmit power of the receiving terminal at the PSFCH, optionally, the method further comprises: acquiring a PSFCH resource by one of the following modes, namely determining the sending position of the feedback information of the receiving terminal:
the receiving terminal obtains the PSFCH resource through resource sensing or reservation;
obtaining the PSFCH resource according to control node distribution; the control node may be a base station, an RSU, a Relay, a UE that controls other UEs on sidelink, or the like;
and obtaining the PSFCH resource according to the indication of the transmitting terminal, wherein the PSFCH resource is reserved for the transmitting terminal.
Optionally, when the PSFCH performs independent power control, the transmission power of an AGC symbol is the same as the transmission power of the receiving terminal at the PSFCH; or, a difference between the transmission power of the AGC symbol and the transmission power of the receiving terminal at the PSFCH falls within a preset range.
It should be noted that, when the PSFCH performs independent power Control, there may be an AGC (Automatic gain Control) symbol before the PSFCH, and the transmission power of the AGC should be the same as that of the PSFCH (or the difference between the two should be within a certain range).
According to the embodiment of the invention, during multicast communication, the sending power of each receiving terminal on the PSFCH is controlled based on the distance between the receiving terminal and the sending terminal, and the sending terminal is ensured to receive the feedback information of each receiving terminal on the PSFCH with similar power, so that the interference between UE and IBE interference are reduced, and the receiving success rate of the feedback information is improved.
As shown in fig. 5, an embodiment of the present invention provides a terminal 500, where the terminal is a receiving terminal, and the terminal includes:
a first obtaining module 501, configured to obtain a first distance between the receiving terminal and the sending terminal;
a first determining module 502, configured to determine, according to the first distance, a transmission power of the receiving terminal on a physical sidelink feedback channel PSFCH.
Further, the first determining module 502 includes:
a first obtaining unit, configured to obtain a mapping relationship between a distance and a PSFCH transmission power;
a first determining unit, configured to determine, according to the mapping relationship, a first transmit power corresponding to the first distance;
a second determining unit, configured to determine, according to the first transmission power, a transmission power of the receiving terminal at a PSFCH;
and the transmission power of the receiving terminal at the PSFCH is less than or equal to the maximum transmission power of the receiving terminal.
Optionally, the terminal further includes:
a second determining module for determining a power adjustment window of the PSFCH;
the second determination unit includes:
and a first determining subunit, configured to determine, according to the value range of the power adjustment window and the first transmission power, the transmission power of the receiving terminal on the PSFCH.
Specifically, the value range of the power adjustment window is determined according to first information; the first information includes at least one of:
the method comprises the steps of quality of service (QoS) requirements of transmission information, QoS requirements of feedback information, interference environment, working scenes, link congestion conditions, Modulation and Coding Strategy (MCS) used for PSSCH transmission of an associated physical sidelink data channel, the number of layers, User Equipment (UE) capability, historical hybrid automatic repeat request (HARQ) feedback information, PSFCH resource position, PSFCH format, moving speed of a terminal and moving direction of the terminal.
Further, the first determining subunit is specifically configured to:
if the first transmission power is within the value range of the power adjustment window, the first transmission power is the transmission power of the receiving terminal on the PSFCH;
if the first transmission power is greater than the maximum value of the power adjustment window, the maximum value is the transmission power of the receiving terminal on the PSFCH, wherein the maximum value is less than or equal to the maximum transmission power of the receiving terminal;
and if the first transmission power is smaller than the minimum value of the power adjustment window, the minimum value is the transmission power of the receiving terminal on the PSFCH.
Optionally, the terminal further includes:
a third determining module, configured to determine a base transmit power of the PSFCH;
the first determining module 502 comprises:
a third determining unit, configured to determine a first power adjustment value of the PSFCH according to the first distance;
a fourth determining unit, configured to determine, based on the basic transmit power, a transmit power of the receiving terminal at a PSFCH according to the first power adjustment value;
and the transmission power of the receiving terminal at the PSFCH is less than or equal to the maximum transmission power of the receiving terminal.
Specifically, the base transmission power is determined according to second information, and the second information includes at least one of the following:
downlink path loss, sidelink path loss, reference signal received power, RSRP, QoS requirements for transmission information, QoS requirements for feedback information, interference environment, operating scenario, link congestion situation, modulation and coding strategy, MCS, and number of layers used for associated physical sidelink data channel, psch, transmission.
Further, the third determination unit includes:
a second determining subunit, configured to determine a power adjustment candidate value of the PSFCH;
the first acquisition subunit is used for acquiring the incidence relation between the distance and the power adjustment candidate value;
and the third determining subunit is configured to determine, according to the association relationship, a first power adjustment value corresponding to the first distance from the power adjustment candidate values.
Optionally, the terminal further includes:
a second obtaining module, configured to obtain a second transmit power of the receiving terminal at a PSFCH during last sidelink communication;
the first determining module 502 comprises:
a fifth determining unit, configured to determine a second power adjustment value of the PSFCH according to the first distance;
a sixth determining unit, configured to determine, based on the second transmission power, a transmission power of the receiving terminal at a PSFCH according to the second power adjustment value;
and the transmission power of the receiving terminal at the PSFCH is less than or equal to the maximum transmission power of the receiving terminal.
Further, the fifth determination unit includes:
a fourth determining subunit, configured to determine a power adjustment candidate value of the PSFCH;
a second obtaining subunit, configured to obtain an association relationship between a change value of a distance between the receiving terminal and the sending terminal and the power adjustment candidate value;
a third obtaining subunit, configured to obtain a first change value of the distance from a last sidelink communication to a present sidelink communication;
and a fifth determining subunit, configured to determine, according to the association relationship, a second power adjustment value corresponding to the first change value in the power adjustment candidate values.
Optionally, the terminal further includes:
a third obtaining module, configured to obtain, when there are multiple sending terminals, a sum of transmit powers of PSFCHs of the multiple sending terminals by the receiving terminal;
a first processing module, configured to reduce the transmit power of the PSFCHs when the sum of the transmit powers is greater than the maximum transmit power of the receiving terminal.
Optionally, the terminal further includes:
a second processing module, configured to, when multiple transmitting terminals are available, allocate transmit power to multiple PSFCHs according to third information;
the sum of the transmit powers of the plurality of PSFCHs is less than or equal to the maximum transmit power of the receiving terminal.
Specifically, the third information includes at least one of:
quality of service (QoS) requirements for transmission information, QoS requirements for feedback information, link congestion conditions, Modulation and Coding Strategies (MCS) for PSSCH transmission of an associated physical sidelink data channel, number of layers, historical hybrid automatic repeat request (HARQ) feedback information, and distance between the receiving terminal and the transmitting terminal.
Optionally, the terminal further includes:
a fourth obtaining module, configured to obtain a power boost value of the PSFCH;
a third processing module for superimposing the power boost value on the transmit power of the PSFCH.
Optionally, the terminal further includes:
a fifth obtaining module, configured to obtain the PSFCH resource in one of the following manners:
the receiving terminal obtains the PSFCH resource through resource sensing or reservation;
obtaining the PSFCH resource according to control node distribution;
and obtaining the PSFCH resource according to the indication of the transmitting terminal, wherein the PSFCH resource is reserved for the transmitting terminal.
Optionally, when the PSFCH performs independent power control, the transmission power of an AGC symbol is the same as the transmission power of the receiving terminal at the PSFCH; or, a difference between the transmission power of the AGC symbol and the transmission power of the receiving terminal at the PSFCH falls within a preset range.
It should be noted that the terminal embodiment is a terminal corresponding to the above-mentioned power control method applied to the physical sidelink feedback channel of the receiving terminal, and all implementation manners of the above-mentioned embodiments are applicable to the terminal embodiment, and the same technical effects as those can also be achieved.
Preferably, an embodiment of the present invention further provides a terminal, where the terminal is a receiving terminal, and the terminal includes a processor, a memory, and a computer program stored in the memory and capable of running on the processor, and when the computer program is executed by the processor, the computer program implements each process of the embodiment of the power control method for a physical sidelink feedback channel, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
Fig. 6 is a schematic diagram of a hardware structure of a terminal implementing the embodiment of the present invention, where the terminal is a receiving terminal.
The terminal 60 includes but is not limited to: radio unit 610, network module 620, audio output unit 630, input unit 640, sensor 650, display unit 660, user input unit 670, interface unit 680, memory 690, processor 611, and power supply 612. Those skilled in the art will appreciate that the terminal configuration shown in fig. 6 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
The processor 611 is configured to obtain a first distance between the receiving terminal and the sending terminal;
and determining the transmission power of the receiving terminal on a physical sidelink feedback channel PSFCH according to the first distance.
It should be understood that, in the embodiment of the present invention, the radio frequency unit 610 may be configured to receive and transmit signals during a message transmission and reception process or a call process, and specifically, receive downlink data from a network-side device and then process the received downlink data in the processor 611; in addition, the uplink data is sent to the network side equipment. In general, radio unit 610 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio unit 610 may also communicate with a network and other devices through a wireless communication system.
The terminal provides the user with wireless broadband internet access through the network module 620, such as helping the user send and receive e-mails, browse web pages, and access streaming media.
The audio output unit 630 may convert audio data received by the radio frequency unit 610 or the network module 620 or stored in the memory 690 into an audio signal and output as sound. Also, the audio output unit 630 may also provide audio output related to a specific function performed by the terminal 60 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 630 includes a speaker, a buzzer, a receiver, and the like.
The input unit 640 is used to receive an audio or video signal. The input Unit 640 may include a Graphics Processing Unit (GPU) 641 and a microphone 642, and the Graphics processor 641 processes image data of still pictures or video obtained by an image capturing apparatus (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 660. The image frames processed by the graphic processor 641 may be stored in the memory 690 (or other storage medium) or transmitted via the radio frequency unit 610 or the network module 620. The microphone 642 may receive sounds and may be capable of processing such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication network side device via the radio frequency unit 610 in case of the phone call mode.
The terminal 60 also includes at least one sensor 650, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 661 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 661 and/or a backlight when the terminal 60 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensor 650 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which will not be described in detail herein.
The display unit 660 is used to display information input by a user or information provided to the user. The Display unit 660 may include a Display panel 661, and the Display panel 661 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 670 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 670 includes a touch panel 671 and other input devices 672. The touch panel 671, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 671 (e.g., operations by a user on or near the touch panel 671 using a finger, a stylus, or any other suitable object or attachment). The touch panel 671 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 611, and receives and executes commands sent from the processor 611. In addition, the touch panel 671 can be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 671, the user input unit 670 may also include other input devices 672. In particular, the other input devices 672 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 671 may be overlaid on the display panel 661, and when the touch panel 671 detects a touch operation on or near the touch panel 671, the touch panel 671 transmits to the processor 611 to determine the type of the touch event, and then the processor 611 provides a corresponding visual output on the display panel 661 according to the type of the touch event. Although the touch panel 671 and the display panel 661 are shown as two separate components in fig. 6 to implement the input and output functions of the terminal, in some embodiments, the touch panel 671 and the display panel 661 can be integrated to implement the input and output functions of the terminal, which is not limited herein.
The interface unit 680 is an interface for connecting an external device to the terminal 60. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 680 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 60 or may be used to transmit data between the terminal 60 and an external device.
The memory 690 may be used to store software programs as well as various data. The memory 690 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 640 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 volatile solid state storage device.
The processor 611 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by operating or executing software programs and/or modules stored in the memory 690 and calling data stored in the memory 690, thereby performing overall monitoring of the terminal. Processor 611 may include one or more processing units; preferably, the processor 611 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 611.
The terminal 60 may further include a power supply 612 (e.g., a battery) for supplying power to various components, and preferably, the power supply 612 may be logically connected to the processor 611 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system.
In addition, the terminal 60 includes some functional modules that are not shown, and will not be described in detail herein.
The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the embodiment of the power control method for a physical sidelink feedback channel, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
The network side device may be a Base Transceiver Station (BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (evolved Node B, eNB or eNodeB) in LTE, a relay Station or Access point, or a Base Station in a future 5G network, and the like, which is not limited herein.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (e.g., a mobile phone, a computer, a server, an air conditioner, or a network-side device) to execute the method according to the embodiments of the present invention.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (16)
1. A power control method of a physical sidelink feedback channel is applied to a receiving terminal, and is characterized by comprising the following steps:
acquiring a first distance between the receiving terminal and the sending terminal;
determining the transmitting power of the receiving terminal on a physical side link feedback channel PSFCH according to the first distance;
the determining, according to the first distance, the transmission power of the receiving terminal on a physical sidelink feedback channel PSFCH includes:
acquiring a mapping relation between the distance and PSFCH transmission power;
determining a first sending power corresponding to the first distance according to the mapping relation;
determining the transmission power of the receiving terminal at the PSFCH according to the first transmission power;
or
Determining a base transmit power of the PSFCH;
determining a first power adjustment value of the PSFCH according to the first distance;
on the basis of the basic transmission power, determining the transmission power of the receiving terminal at the PSFCH according to the first power adjustment value;
or
Acquiring a second transmission power of the receiving terminal at a PSFCH (pseudo secure channel frequency channel) during last sidelink communication;
determining a second power adjustment value of the PSFCH according to the first distance;
on the basis of the second transmission power, determining the transmission power of the receiving terminal at the PSFCH according to the second power adjustment value;
wherein the transmission power of the receiving terminal at the PSFCH is less than or equal to the maximum transmission power of the receiving terminal.
2. The method for power control of physical sidelink feedback channel as defined in claim 1, further comprising:
determining a power adjustment window for the PSFCH;
the determining the transmission power of the receiving terminal at the PSFCH according to the first transmission power includes:
and determining the transmission power of the receiving terminal on the PSFCH according to the value range of the power adjustment window and the first transmission power.
3. The method according to claim 2, wherein the value range of the power adjustment window is determined according to the first information; the first information includes at least one of:
the method comprises the steps of quality of service (QoS) requirements of transmission information, QoS requirements of feedback information, interference environment, working scenes, link congestion conditions, Modulation and Coding Strategy (MCS) used for PSSCH transmission of an associated physical sidelink data channel, the number of layers, User Equipment (UE) capability, historical hybrid automatic repeat request (HARQ) feedback information, PSFCH resource position, PSFCH format, moving speed of a terminal and moving direction of the terminal.
4. The method of claim 2, wherein the determining the transmission power of the receiving terminal on the PSFCH comprises:
if the first transmission power is within the value range of the power adjustment window, the first transmission power is the transmission power of the receiving terminal on the PSFCH;
if the first transmission power is greater than the maximum value of the power adjustment window, the maximum value is the transmission power of the receiving terminal on the PSFCH, wherein the maximum value is less than or equal to the maximum transmission power of the receiving terminal;
and if the first transmission power is smaller than the minimum value of the power adjustment window, the minimum value is the transmission power of the receiving terminal on the PSFCH.
5. The method of claim 1, wherein the base transmit power is determined according to second information, and wherein the second information comprises at least one of:
downlink path loss, sidelink path loss, reference signal received power, RSRP, QoS requirements for transmission information, QoS requirements for feedback information, interference environment, operating scenario, link congestion situation, modulation and coding strategy, MCS, and number of layers used for associated physical sidelink data channel, psch, transmission.
6. The method of claim 1, wherein determining the first power adjustment value for the PSFCH according to the first distance comprises:
determining a power adjustment candidate value for the PSFCH;
acquiring an incidence relation between the distance and the power adjustment candidate value;
and determining a first power adjustment value corresponding to the first distance from the power adjustment candidate values according to the incidence relation.
7. The method of claim 1, wherein determining the second power adjustment value for the PSFCH according to the first distance comprises:
determining a power adjustment candidate value for the PSFCH;
acquiring an incidence relation between a variation value of the distance between the receiving terminal and the sending terminal and the power adjustment candidate value;
acquiring a first change value of the distance from the last time of sidelink communication to the present time of sidelink communication;
and determining a second power adjustment value corresponding to the first change value in the power adjustment candidate values according to the incidence relation.
8. The method for power control of physical sidelink feedback channel as claimed in claim 1, further comprising:
when a plurality of transmitting terminals are provided, acquiring the sum of the transmitting power of the receiving terminal aiming at the PSFCH of the plurality of transmitting terminals;
and reducing the transmission power of the PSFCHs when the sum of the transmission power is larger than the maximum transmission power of the receiving terminal.
9. The method for power control of physical sidelink feedback channel as claimed in claim 1, further comprising:
when the number of the transmitting terminals is multiple, distributing transmitting power for the PSFCHs according to third information; the sum of the transmit powers of the plurality of PSFCHs is less than or equal to the maximum transmit power of the receiving terminal.
10. The method of claim 9, wherein the third information comprises at least one of the following:
quality of service (QoS) requirements for transmission information, QoS requirements for feedback information, link congestion conditions, Modulation and Coding Strategies (MCS) for PSSCH transmission of an associated physical sidelink data channel, number of layers, historical hybrid automatic repeat request (HARQ) feedback information, and distance between the receiving terminal and the transmitting terminal.
11. The method for power control of physical sidelink feedback channel as claimed in claim 1, further comprising:
acquiring a power boost value of the PSFCH;
superimposing the power boost value on the transmit power of the PSFCH.
12. The method for power control of physical sidelink feedback channel as claimed in claim 1, further comprising:
acquiring PSFCH resources by one of the following methods:
the receiving terminal obtains the PSFCH resource through resource sensing or reservation;
obtaining the PSFCH resource according to control node distribution;
and obtaining the PSFCH resource according to the indication of the transmitting terminal, wherein the PSFCH resource is reserved for the transmitting terminal.
13. The method according to claim 1, wherein when the PSFCH performs independent power control, the transmission power of an AGC symbol is the same as the transmission power of the receiving terminal at the PSFCH; or, a difference between the transmission power of the AGC symbol and the transmission power of the receiving terminal at the PSFCH falls within a preset range.
14. A terminal, the terminal being a receiving terminal, comprising:
the first acquisition module is used for acquiring a first distance between the receiving terminal and the sending terminal;
a first determining module, configured to determine, according to the first distance, a transmit power of the receiving terminal in a physical sidelink feedback channel PSFCH;
the first determining module includes:
a first obtaining unit, configured to obtain a mapping relationship between a distance and a PSFCH transmission power;
a first determining unit, configured to determine, according to the mapping relationship, a first transmit power corresponding to the first distance;
a second determining unit, configured to determine, according to the first transmission power, a transmission power of the receiving terminal at a PSFCH;
or
A third determining module, configured to determine a base transmit power of the PSFCH;
a third determining unit, configured to determine a first power adjustment value of the PSFCH according to the first distance;
a fourth determining unit, configured to determine, based on the basic transmit power, a transmit power of the receiving terminal at a PSFCH according to the first power adjustment value;
or
A second obtaining module, configured to obtain a second transmit power of the receiving terminal at a PSFCH during last sidelink communication;
a fifth determining unit, configured to determine a second power adjustment value of the PSFCH according to the first distance;
a sixth determining unit, configured to determine, based on the second transmission power, a transmission power of the receiving terminal at a PSFCH according to the second power adjustment value;
wherein the transmission power of the receiving terminal at the PSFCH is less than or equal to the maximum transmission power of the receiving terminal.
15. A terminal, the terminal being a receiving terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of power control of a physical sidelink feedback channel as claimed in any one of claims 1 to 13.
16. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the steps of the method for power control of a physical sidelink feedback channel as set forth in any one of the claims 1 to 13.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910775656.3A CN111836352B (en) | 2019-08-21 | 2019-08-21 | Power control method and terminal for physical side link feedback channel |
| PCT/CN2020/106183 WO2021031826A1 (en) | 2019-08-21 | 2020-07-31 | Method for controlling power of physical sidelink feedback channel, and terminal |
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| CN201910775656.3A CN111836352B (en) | 2019-08-21 | 2019-08-21 | Power control method and terminal for physical side link feedback channel |
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| CN111836352B true CN111836352B (en) | 2021-10-22 |
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| CN113068147B (en) * | 2021-04-02 | 2023-04-07 | 上海中兴易联通讯股份有限公司 | Method and system for supporting resource reuse in sidelink communication |
| CN117793939A (en) * | 2022-09-27 | 2024-03-29 | 华为技术有限公司 | Communication method, communication device and communication system |
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| WO2021031826A1 (en) | 2021-02-25 |
| CN111836352A (en) | 2020-10-27 |
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