CN111511025A

CN111511025A - Power control method and terminal equipment

Info

Publication number: CN111511025A
Application number: CN201910101907.XA
Authority: CN
Inventors: 刘哲; 张兴炜; 黎超
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-01-31
Filing date: 2019-01-31
Publication date: 2020-08-07
Anticipated expiration: 2039-01-31
Also published as: CN111511025B; WO2020156214A1

Abstract

The application provides a power control method and terminal equipment, wherein the method comprises the following steps: the first terminal equipment determines the transmitting power of a data channel; the data channel comprises first information, and the first information comprises feedback information; and the first terminal equipment sends the feedback information to second terminal equipment by using the transmitting power of the data channel. Correspondingly, the application also provides a corresponding device. By adopting the method and the device, the power can be reasonably controlled.

Description

Power control method and terminal equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a power control method and a terminal device.

Background

Under the network of long term evolution (L TE) technology proposed by the 3rd generation partnership project (3 GPP), vehicle networking technology of vehicle-to-vehicle communication (V2X) is proposed, and V2X communication refers to communication of a vehicle with anything outside, including vehicle-to-vehicle communication (V2V), vehicle-to-pedestrian communication (V2P), vehicle-to-infrastructure communication (V2I), vehicle-to-network communication (V2N).

The V2X communication is a basic technology and a key technology applied in a scene with a very high requirement on communication delay in the future, such as intelligent automobiles, automatic driving, intelligent transportation systems, and the like, for high-speed devices represented by vehicles. Based on the V2X communication, the vehicle user can send some information of the vehicle user, such as position, speed, intention (turning, merging, reversing) and other information periodically, and some non-periodic event-triggered information to the surrounding vehicle user, and the vehicle user can also receive the information of the surrounding user in real time.

Among them, L TE-V2X mainly faces traffic types of broadcast messages, no hybrid automatic repeat request (HARQ) feedback, Channel State Information (CSI) feedback, and so on.

However, the traffic types in NR-V2X can also be unicast and multicast, etc., and therefore how to perform power control allocation and power control in NR-V2X is urgently needed.

Disclosure of Invention

The application provides a power control method and terminal equipment, which can reasonably control the transmitting power of different channels.

In a first aspect, an embodiment of the present application provides a power control method, including: the first terminal equipment determines the transmitting power of a data channel; the data channel comprises first information, and the first information comprises feedback information; and the first terminal equipment sends the feedback information to second terminal equipment by using the transmitting power of the data channel.

In the embodiment of the application, when the time-frequency domain resources of the data channel and the feedback channel are overlapped, the feedback information can be sent along with the data channel, so that the transmission power of the data channel is improved, and the distribution of the transmission power of the data channel under the condition is more accurate.

With reference to the first aspect, in a possible implementation manner, the transmit power of the data channel is determined according to a maximum transmit power, a bandwidth of the data channel, and a first adjustment parameter; or, the transmission power of the data channel is determined according to the maximum transmission power, the bandwidth of the data channel, the bandwidth of the control channel, and the first adjustment parameter.

In the embodiment of the present application, the first adjustment parameter may be a parameter capable of adjusting the transmission power of the data channel, and the first adjustment parameter may be a parameter related to feedback information, so that when the terminal device allocates the transmission power of the data channel, the terminal device can adjust the transmission power of the data channel according to actual information transmitted in the data channel, and further improve the accuracy of the transmission power of the data channel.

With reference to the first aspect or any possible implementation manner of the first aspect, the first adjustment parameter is determined according to a first sub-parameter and a second sub-parameter, where the first sub-parameter is a parameter related to adjustment of a coding policy, MCS, and the second sub-parameter is a parameter related to the number of resource elements, REs, of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.

With reference to the first aspect or any possible implementation manner of the first aspect, the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter, and a third sub-parameter, where the first sub-parameter is a parameter related to adjustment of a coding strategy MCS, the second sub-parameter is a parameter related to the number of Resource Elements (REs) of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.

With reference to the first aspect or any possible implementation manner of the first aspect, the feedback information includes hybrid automatic repeat request, HARQ, information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

With reference to the first aspect or any possible implementation manner of the first aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

With reference to the first aspect or any possible implementation manner of the first aspect, the reference information includes information related to a distance.

With reference to the first aspect or any possible implementation manner of the first aspect, the information related to the distance includes one or more of distance information between the first terminal device and a network device, distance information between the first terminal device and the second terminal device, communication distance information covered by the first terminal device, and feedback information that the first terminal device is within a coverage of the network device.

With reference to the first aspect or any possible implementation manner of the first aspect, the transmit power of the data channel satisfies the following formula:

P₁＝min{P_CMAX,f₁(M₁)+P_O+α×PL+β}

wherein, the P₁For the transmission power of the data channel, the P_CMAXFor the maximum transmission power, the f₁(M₁) For the bandwidth M of the data channel₁A function of, said P_OFor a target received power of the second terminal device, the P L is a pathloss estimate, the β is the first adjustment parameter.

P₁＝f₂(M₁+M₂)+min{P_CMAX,f₃(M₁+M₂)+P_O+α×PL+β}

wherein, the P₁For the transmission power of the data channel, the P_CMAXFor the maximum transmission power, the f₂(M₁+M₂) And f is₃(M₁+M₂) Respectively the bandwidth M of the data channel₁And bandwidth M of said control channel₂A function of, said P_OFor a target received power of the second terminal device, the P L is a pathloss estimate, the β is the first adjustment parameter.

P₁＝min{P_CMAX-f₄(M₁+M₂),f₃(M₁+M₂)+P_O+α×PL+β}

wherein, the P₁For the transmission power of the data channel, the P_CMAXFor the maximum transmission power, the f₃(M₁+M₂) And f is₄(M₁+M₂) Respectively the bandwidth M of the data channel₁And bandwidth M of said control channel₂A function of, said P_OFor a target received power of the second terminal device, the P L is a pathloss estimate, the β is the first adjustment parameter.

In a second aspect, an embodiment of the present application further provides a power control method, including: the first terminal equipment determines the transmitting power of a feedback channel; the feedback channel and the data channel are overlapped in both time domain and frequency domain, or the feedback channel and the data channel are overlapped in frequency domain and have no time domain, or the feedback channel and the data channel are overlapped in time domain and have no frequency domain; and the first terminal equipment sends feedback information to the second terminal equipment by using the transmission power of the feedback channel.

In the embodiment of the present application, the multiplexing manner between the feedback channel and the data channel may include multiple possibilities (i.e., different frame structures), for example, the feedback channel may overlap with the data channel in both time domain and frequency domain, or the feedback channel may overlap with the data channel in frequency domain but not in time domain, or the feedback channel may overlap with the data channel in time domain but not in frequency domain, where different multiplexing manners correspond to different transmission powers, so that the terminal device may determine the transmission power of the feedback channel according to one of the multiple possibilities, and it is avoided that the transmission power of the feedback channel is determined in one manner under all circumstances, thereby effectively improving the accuracy of determining the transmission power of the feedback channel, and reasonably controlling the transmission power of the feedback channel.

With reference to the second aspect, in a possible implementation manner, the transmission power of the feedback channel is determined according to a maximum transmission power, a bandwidth of the feedback channel, a bandwidth of the data channel, a power difference between the feedback channel and the data channel, and a second adjustment parameter; or the transmitting power of the feedback channel is determined according to the maximum transmitting power, the bandwidth of the feedback channel, the bandwidth of a control channel, the power difference value between the feedback channel and the control channel, and a second adjusting parameter.

In the embodiment of the present application, the transmission power of the feedback channel may be determined according to different frame structures.

With reference to the second aspect or any possible implementation manner of the second aspect, the second adjustment parameter is configured by higher layer signaling, or the second adjustment parameter is predefined.

With reference to the second aspect or any possible implementation manner of the second aspect, the second adjustment parameter is related to a number of bits of the feedback information and a number of Resource Elements (REs) of the feedback channel.

With reference to the second aspect or any possible implementation manner of the second aspect, a power difference value of the feedback channel and the data channel is predefined, or the power difference value of the feedback channel and the data channel is indicated by control information; or the power difference value of the feedback channel and the data channel is configured by high-level signaling; the power difference of the feedback channel and the control channel is predefined, or the power difference of the feedback channel and the control channel is indicated by the control information; or the power difference value of the feedback channel and the control channel is configured by the high-layer signaling.

With reference to the second aspect or any possible implementation manner of the second aspect, the feedback information includes hybrid automatic repeat request, HARQ, information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

With reference to the second aspect or any possible implementation manner of the second aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

With reference to the second aspect or any possible implementation manner of the second aspect, the reference information includes information related to a distance.

With reference to the second aspect or any possible implementation manner of the second aspect, the information related to the distance includes one or more of distance information between the first terminal device and a network device, distance information between the first terminal device and the second terminal device, communication distance information covered by the first terminal device, and feedback information that the first terminal device is within a coverage of the network device.

With reference to the second aspect or any possible implementation manner of the second aspect, the transmit power of the feedback channel satisfies the following formula:

P₂＝f₅(M₁+M₃)+min{P_CMAX,f₆(M₁+M₃)+P_O+α×PL+Δ}

wherein, the P₂Is the transmission power of the feedback channel, the P_CMAXFor the maximum transmission power, the f₅(M₁+M₃) And f is₆(M₁+M₃) Respectively the bandwidth M of the data channel₁Bandwidth M of the feedback channel₃And a function of the power difference of the feedback channel and the data channel, P_OThe P L is a path loss estimation value, and Δ is the second adjustment parameter, which is the target received power of the second terminal device.

P₂＝f₇(M₂+M₃)+min{P_CMAX,f₈(M₂+M₃)+P_O+α×PL+Δ}

wherein, the P₂Is the transmission power of the feedback channel, the P_CMAXFor the maximum transmission power, the f₇(M₂+M₃) And f is₈(M₂+M₃) Respectively the bandwidth M of the control channel₂Bandwidth M of the feedback channel₃And a function of the power difference of the feedback channel and the control channel, P_OThe P L is a path loss estimation value, and Δ is the second adjustment parameter, which is the target received power of the second terminal device.

In a third aspect, an embodiment of the present application provides a power control apparatus, including: a processing unit for determining a transmit power of a data channel; the data channel comprises first information, and the first information comprises feedback information; and the sending unit is used for sending the feedback information to the second terminal equipment by using the transmitting power of the data channel.

With reference to the third aspect, in a possible implementation manner, the transmit power of the data channel is determined according to a maximum transmit power, a bandwidth of the data channel, and a first adjustment parameter; or, the transmission power of the data channel is determined according to the maximum transmission power, the bandwidth of the data channel, the bandwidth of the control channel, and the first adjustment parameter.

With reference to the third aspect or any possible implementation manner of the third aspect, the first adjustment parameter is determined according to a first sub-parameter and a second sub-parameter, where the first sub-parameter is a parameter related to adjustment of a coding policy, MCS, and the second sub-parameter is a parameter related to the number of resource elements, REs, of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.

With reference to the third aspect or any possible implementation manner of the third aspect, the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter, and a third sub-parameter, where the first sub-parameter is a parameter related to adjustment of a coding strategy MCS, the second sub-parameter is a parameter related to the number of Resource Elements (REs) of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.

With reference to the third aspect or any possible implementation manner of the third aspect, the feedback information includes hybrid automatic repeat request, HARQ, information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

With reference to the third aspect or any possible implementation manner of the third aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

With reference to the third aspect or any possible implementation manner of the third aspect, the reference information includes information related to a distance.

With reference to the third aspect or any possible implementation manner of the third aspect, the information related to the distance includes one or more of distance information between the first terminal device and a network device, distance information between the first terminal device and the second terminal device, communication distance information covered by the first terminal device, and feedback information that the first terminal device is within a coverage of the network device.

With reference to the third aspect or any possible implementation manner of the third aspect, the transmit power of the data channel satisfies the following formula:

P₁＝min{P_CMAX,f₁(M₁)+P_O+α×PL+β}

P₁＝f₂(M₁+M₂)+min{P_CMAX,f₃(M₁+M₂)+P_O+α×PL+β}

wherein, the P₁For the transmission power of the data channel, the P_CMAXFor said maximum emissionPower of said f₂(M₁+M₂) And f is₃(M₁+M₂) Respectively the bandwidth M of the data channel₁And bandwidth M of said control channel₂A function of, said P_OFor a target received power of the second terminal device, the P L is a pathloss estimate, the β is the first adjustment parameter.

P₁＝min{P_CMAX-f₄(M₁+M₂),f₃(M₁+M₂)+P_O+α×PL+β}

In a fourth aspect, an embodiment of the present application further provides a power control apparatus, including: a processing unit for determining a transmit power of a feedback channel; the feedback channel and the data channel are overlapped in both time domain and frequency domain, or the feedback channel and the data channel are overlapped in frequency domain and have no time domain, or the feedback channel and the data channel are overlapped in time domain and have no frequency domain; and the sending unit is used for sending the feedback information to the second terminal equipment by using the transmitting power of the feedback channel.

With reference to the fourth aspect, in a possible implementation manner, the transmission power of the feedback channel is determined according to a maximum transmission power, a bandwidth of the feedback channel, a bandwidth of the data channel, a power difference between the feedback channel and the data channel, and a second adjustment parameter; or the transmitting power of the feedback channel is determined according to the maximum transmitting power, the bandwidth of the feedback channel, the bandwidth of a control channel, the power difference value between the feedback channel and the control channel, and a second adjusting parameter.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, the second adjustment parameter is configured by higher layer signaling, or the second adjustment parameter is predefined.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, the second adjustment parameter is related to a number of bits of the feedback information and a number of Resource Elements (REs) of the feedback channel.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, a power difference value of the feedback channel and the data channel is predefined, or the power difference value of the feedback channel and the data channel is indicated by control information; or the power difference value of the feedback channel and the data channel is configured by high-level signaling; the power difference of the feedback channel and the control channel is predefined, or the power difference of the feedback channel and the control channel is indicated by the control information; or the power difference value of the feedback channel and the control channel is configured by the high-layer signaling.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, the feedback information includes hybrid automatic repeat request, HARQ, information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, the reference information includes information related to a distance.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, the information related to the distance includes one or more of distance information between the first terminal device and a network device, distance information between the first terminal device and the second terminal device, communication distance information covered by the first terminal device, and feedback information that the first terminal device is within a coverage of the network device.

With reference to the fourth aspect or any possible implementation manner of the fourth aspect, the transmit power of the feedback channel satisfies the following formula:

P₂＝f₅(M₁+M₃)+min{P_CMAX,f₆(M₁+M₃)+P_O+α×PL+Δ}

P₂＝f₇(M₂+M₃)+min{P_CMAX,f₈(M₂+M₃)+P_O+α×PL+Δ}

In a fifth aspect, an embodiment of the present application provides a terminal device, where the terminal device is used as a first terminal device, the first terminal device includes a processor, a memory, and a transceiver, the processor is coupled to the memory, and the processor is configured to determine a transmission power of a data channel; the data channel comprises first information, and the first information comprises feedback information; the transceiver is coupled to the processor, and the transceiver is configured to transmit the feedback information to a second terminal device at a transmission power of the data channel.

With reference to the fifth aspect, in a possible implementation manner, the transmit power of the data channel is determined according to a maximum transmit power, a bandwidth of the data channel, and a first adjustment parameter; or, the transmission power of the data channel is determined according to the maximum transmission power, the bandwidth of the data channel, the bandwidth of the control channel, and the first adjustment parameter.

With reference to the fifth aspect or any possible implementation manner of the fifth aspect, the first adjustment parameter is determined according to a first sub-parameter and a second sub-parameter, where the first sub-parameter is a parameter related to adjustment of a coding policy, MCS, and the second sub-parameter is a parameter related to the number of resource elements, REs, of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.

With reference to the fifth aspect or any possible implementation manner of the fifth aspect, the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter, and a third sub-parameter, where the first sub-parameter is a parameter related to adjustment of a coding strategy MCS, the second sub-parameter is a parameter related to the number of resource elements REs of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.

With reference to the fifth aspect or any possible implementation manner of the fifth aspect, the feedback information includes hybrid automatic repeat request, HARQ, information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

With reference to the fifth aspect or any possible implementation manner of the fifth aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

With reference to the fifth aspect or any possible implementation manner of the fifth aspect, the transmit power of the data channel satisfies the following formula:

P₁＝min{P_CMAX,f₁(M₁)+P_O+α×PL+β}

P₁＝f₂(M₁+M₂)+min{P_CMAX,f₃(M₁+M₂)+P_O+α×PL+β}

P₁＝min{P_CMAX-f₄(M₁+M₂),f₃(M₁+M₂)+P_O+α×PL+β}

In a sixth aspect, an embodiment of the present application further provides a terminal device, where the terminal device is used as a first terminal device, the first terminal device includes a processor, a memory, and a transceiver, the processor is coupled to the memory, and the processor is configured to determine a transmit power of a feedback channel; the feedback channel and the data channel are overlapped in both time domain and frequency domain, or the feedback channel and the data channel are overlapped in frequency domain and have no time domain, or the feedback channel and the data channel are overlapped in time domain and have no frequency domain; the transceiver is coupled to the processor, and is configured to send feedback information to a second terminal device at the transmission power of the feedback channel.

With reference to the sixth aspect, in a possible implementation manner, the transmission power of the feedback channel is determined according to a maximum transmission power, a bandwidth of the feedback channel, a bandwidth of the data channel, a power difference between the feedback channel and the data channel, and a second adjustment parameter; or the transmitting power of the feedback channel is determined according to the maximum transmitting power, the bandwidth of the feedback channel, the bandwidth of a control channel, the power difference value between the feedback channel and the control channel, and a second adjusting parameter.

With reference to the sixth aspect or any possible implementation manner of the sixth aspect, the second adjustment parameter is configured by higher layer signaling, or the second adjustment parameter is predefined.

With reference to the sixth aspect or any possible implementation manner of the sixth aspect, the second adjustment parameter is related to a number of bits of the feedback information and a number of Resource Elements (REs) of the feedback channel.

With reference to the sixth aspect or any possible implementation manner of the sixth aspect, a power difference value of the feedback channel and the data channel is predefined, or the power difference value of the feedback channel and the data channel is indicated by control information; or the power difference value of the feedback channel and the data channel is configured by high-level signaling; the power difference of the feedback channel and the control channel is predefined, or the power difference of the feedback channel and the control channel is indicated by the control information; or the power difference value of the feedback channel and the control channel is configured by the high-layer signaling.

With reference to the sixth aspect or any possible implementation manner of the sixth aspect, the feedback information includes hybrid automatic repeat request, HARQ, information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

With reference to the sixth aspect or any possible implementation manner of the sixth aspect, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

With reference to the sixth aspect or any possible implementation manner of the sixth aspect, the transmit power of the feedback channel satisfies the following formula:

P₂＝f₅(M₁+M₃)+min{P_CMAX,f₆(M₁+M₃)+P_O+α×PL+Δ}

P₂＝f₇(M₂+M₃)+min{P_CMAX,f₈(M₂+M₃)+P_O+α×PL+Δ}

In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to perform the method of the above aspects.

In an eighth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

Drawings

Fig. 1a is a schematic diagram of a communication system according to an embodiment of the present application;

FIG. 1b is a schematic diagram of a scenario of V2X according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a time-frequency resource provided in an embodiment of the present application;

fig. 3 is a schematic diagram of a frame structure provided in an embodiment of the present application;

fig. 4a is a schematic view of a scenario of a sidelink according to an embodiment of the present application;

fig. 4b is a schematic view of another sidelink scenario provided by the embodiment of the present application;

fig. 4c is a schematic view of a scenario of another sidelink provided in the embodiment of the present application;

fig. 4d is a schematic view of a scenario of another sidelink provided in the embodiment of the present application;

fig. 4e is a schematic view of a scenario of another sidelink provided in the embodiment of the present application;

fig. 4f is a schematic view of a scenario of another sidelink provided in the embodiment of the present application;

fig. 4g is a schematic view of a scenario of another sidelink provided by an embodiment of the present application;

fig. 5 is a schematic flowchart of a power control method according to an embodiment of the present application;

fig. 6 is a schematic flowchart of another power control method provided in the embodiment of the present application;

fig. 7 is a schematic diagram of another frame structure provided in the embodiment of the present application;

fig. 8 is a schematic diagram of another frame structure provided in the embodiment of the present application;

fig. 9 is a schematic diagram of another frame structure provided in the embodiment of the present application;

fig. 10 is a schematic structural diagram of a power control apparatus according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

The terms "first" and "second," and the like in the description, claims, and drawings of the present application are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more, "at least two" means two or three and three or more, "and/or" for describing an association relationship of associated objects, meaning that three relationships may exist, for example, "a and/or B" may mean: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

The communication system as used herein may be understood as a wireless cellular communication system or as a wireless communication system based on a cellular network architecture. Such as a fifth generation mobile communication (5th-generation, 5G) system, and the next generation mobile communication, etc. Fig. 1a is a schematic diagram of a communication system provided in an embodiment of the present application, to which the scheme in the present application is applicable. The communication system may include at least one network device, only one of which is shown, such as the next generation base station (gNB) in the figure; and one or more terminal devices connected to the network device, such as terminal device 1 and terminal device 2 in the figure.

The network device may be a device capable of communicating with the terminal device. The network device may be any device with wireless transceiving capabilities, including but not limited to a base station. For example, the base station may be a gbb, or the base station may be a base station in a future communication system. Optionally, the network device may also be an access node, a wireless relay node, a wireless backhaul node, and the like in a wireless local area network (WiFi) system. Optionally, the network device may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario. Optionally, the network device may also be a wearable device or a vehicle-mounted device, etc. Alternatively, the network device may be a small station, a Transmission Reference Point (TRP), or the like. Although the application is not so limited.

Terminal equipment may also be referred to as User Equipment (UE), terminal, etc. The terminal equipment has a wireless transceiving function, can be deployed on land and comprises an indoor or outdoor, a handheld, a wearable or a vehicle-mounted terminal; can also be deployed on the water surface, such as a ship and the like; it may also be deployed in the air, such as on an airplane, balloon, or satellite, etc. The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in home (smart home), and so on.

It is understood that in the communication system shown in fig. 1a, the terminal device 1 and the terminal device 2 can also communicate through device-to-device (D2D) technology or vehicle-to-anything communication (V2X) technology.

Further, V2X specifically includes vehicle-to-vehicle communication (V2V), vehicle-to-person communication (V2P), vehicle-to-infrastructure communication (V2I), vehicle-to-network communication (V2N). As shown in FIG. 1b, FIG. 1b shows a scenario of V2X, wherein V2V refers to L TE-based inter-vehicle communication, V2P refers to L TE-based vehicle-to-human communication (including pedestrians, cyclists, drivers, or passengers). V2I refers to L TE-based vehicle-to-human unit (RSU) communication, and further there is a V2N that may be included in V2 6345, V2N refers to RSU-based vehicle-to-road unit (RSU) communication, and V2 may be a non-base station communication type, wherein RSU may be provided for non-roadside-mobile communication, and RSU type, wherein RSU may be considered in a roadside-to-base station communication type.

For example, referring to fig. 2, fig. 2 is a schematic structural diagram of a time-frequency resource provided in an embodiment of the present application, where one Resource Element (RE) is an Orthogonal Frequency Division Multiplexing (OFDM) symbol in a time domain and a subcarrier in a frequency domain, and in an L TE system, the time-frequency resource is divided into an OFDM symbol or a single carrier in a time domain dimensionA frequency division multiplexing multiple access (SC-FDMA) symbol and a subcarrier in a frequency domain dimension, and a minimum resource granularity is called RE, i.e., a time-frequency lattice point consisting of one time-domain symbol in a time domain and one subcarrier in a frequency domain. It is understood that the foregoing is only an example provided by the embodiments of the present application, and the structure of the RE may be changed in future communication technologies, and therefore, the RE shown in fig. 2 should not be construed as a limitation to the embodiments of the present application. As in the 5G NR, a multi-subcarrier spacing is introduced, e.g. the subcarrier spacing may be 15kHz x 2ⁿN is an integer from 3.75, 7.5 up to 480kHz, and so forth.

In the L TE system of 3GPP, the main traffic type in L TE V2X is broadcast, and there is no hybrid automatic repeat request (HARQ) feedback, Channel State Information (CSI) feedback, etc. however, the traffic type in NR V2X also includes unicast and multicast, and also includes HARQ feedback, and uses a separate Physical Sidelink Feedback Channel (PSFCH) to carry Sidelink Feedback Control Information (SFCI).

Specifically, in the frame structure shown in fig. 3, as shown in fig. 3a and 3b, a Physical Sidelink Control Channel (PSCCH) and a physical sidelink shared channel (PSCCH) are Time Division Multiplexing (TDM), and in L TE, in the frame structures shown in fig. 3a and 3b, the transmission powers of the PSCCH and the PSCCH respectively satisfy the following formula:

P_PSSCH＝min{P_CMAX,PSSCH,10log₁₀(M_PSSCH)+P_{O_PSSCH,2}+α_PSSCH,2×PL} (1)

P_PSCCH＝min{P_CMAX,PSCCH,10log₁₀(M_PSCCH)+P_{O_PSCCH,2}+α_PSCCH,2×PL} (2)

wherein, P_PSSCHFor the transmission power of PSSCH, P_CMAX,PSSCHFor the maximum transmit power of the PSSCH, M_PSSCHIs the PBandwidth of SSCH, P_{O_PSSCH,2}Target received power for terminal device, α_PSSCH,2The filtering parameters configured for the base station, P L is the path loss between the base station and the terminal device.

Wherein, P_PSCCHFor the transmission power, P, of the PSCCH_CMAX,PSCCHIs the maximum transmit power, M, of the PSCCH_PSCCHIs the bandwidth, P, of the PSCCH_{O_PSCCH,2}Target received power for terminal device, α_PSCCH,2The filtering parameters configured for the base station, P L is the path loss between the base station and the terminal device.

As shown in 3c in fig. 3, the PSCCH and the PSCCH are Frequency Division Multiplexing (FDM), in L TE, in the frame structure shown in 3c in fig. 3, the transmission powers of the PSCCH and the PSCCH may respectively satisfy the following formulas:

alternatively, equation (3) may be modified as follows:

alternatively, equation (5) may be modified as follows:

wherein, P_PSSCHFor the transmission power of PSSCH, P_PSCCHIs the transmit power of the PSCCH; m_PSSCHFor the bandwidth of PSSCH, M_PSCCHIs the bandwidth of the PSCCH; p_CMAXP L is the downlink loss of the terminal device, and is generally referred to as the uplink loss in a communication system, particularly a Time Division Duplex (TDD) systemThe downlink loss is uniform, so P L can be used to represent the possible link loss from the terminal device to the base station_{O_PSSCH_3}Expected received power for the terminal device (which can also be understood as the target received power for the terminal device), wherein 3 denotes base station scheduling α_PSSCH,3And scheduling the configured filtering parameters in the mode for the base station.

As shown in fig. 3d, there is both a time domain and a frequency domain overlap between PSCCH and PSCCH.

On the basis of the frame structure shown in fig. 3, in NR V2X, the PSFCH may also adopt a different multiplexing mode from the PSCCH and the PSCCH, so that the present application provides a power control method, which can effectively solve the power control problem between the PSFCH and the PSCCH and PSCCH. Specifically, reference may be made to the power control methods illustrated in fig. 5 and 6.

The communication scenario of the power control method provided in the embodiment of the present application will be specifically described below by taking terminal device 1 and terminal device 2 in NR-V2X as an example.

As shown in fig. 4a to fig. 4g, are respectively schematic diagrams of scenarios of sidelink (sidelink) communication provided in an embodiment of the present application.

In the scenario shown in fig. 4a, both terminal device 1 and terminal device 2 are outside the cell coverage.

In the scenario shown in fig. 4b, terminal device 1 is within the cell coverage area, and terminal device 2 is outside the cell coverage area.

In the scenario shown in fig. 4c, terminal device 1 and terminal device 2 are both in the coverage area of the same cell and are in a public land mobile network (P L MN), such as P L MN 1.

The scenario shown in fig. 4d is where terminal device 1 and terminal device 2 are in one P L MN like P L MN1, but are in different cell coverage.

The scenario shown in fig. 4e is that terminal device 1 and terminal device 2 are in different P L MN, respectively different cells, and terminal device 1 and terminal device 2 are in the common coverage of both cells, respectively, e.g. terminal device 1 is in P L MN1 and terminal device 2 is in P L MN 2.

In the scenario shown in fig. 4f, terminal device 1 and terminal device 2 are respectively in different P L MNs and different cells, and terminal device 1 is in the common coverage area of the two cells and terminal device 2 is in the coverage area of the serving cell.

Fig. 4g shows a scenario in which terminal device 1 and terminal device 2 are in different P L MN, respectively, and in different cells, and terminal device 1 and terminal device 2 are in the coverage of respective serving cells.

It is understood that the scenario shown above may be applicable to vehicle-to-aircraft (V2X), which may also be referred to as V2X.

Referring to fig. 5, fig. 5 is a flowchart illustrating a power control method according to an embodiment of the present application, where the power control method is applicable to the terminal devices shown in fig. 4a to 4g, and the power control method can also effectively solve the power control problem shown in fig. 3, as shown in fig. 5, the power control method includes:

501. the first terminal equipment determines the transmitting power of a data channel; the data channel includes first information, and the first information includes feedback information.

In the embodiment of the present application, the feedback information may be sent along with the data channel, for example, the feedback information may be transmitted in the data channel by using a puncturing or rate matching method. Specifically, the feedback information may include HARQ information, where the HARQ information includes an Acknowledgement (ACK) or Negative Acknowledgement (NACK), the ACK is used for feeding back successfully received data, and the NACK is used for feeding back unsuccessfully received data. Optionally, the feedback information may further include reference information, and the reference information may include information between the first terminal device and the second terminal device, or the reference information may include information between the first terminal device and the network device, or the reference information may further include information between the first terminal device and the second terminal device, and information between the first terminal device and the network device. Specifically, for example, the reference information may include any one or more of the following items: reference state information such as Channel State Information (CSI) between the first terminal device and the second terminal device; path loss information between the first terminal device and the second terminal device; reference Signal Received Power (RSRP); reference Signal Received Quality (RSRQ). Of course, the above is only an example, and the reference information may further include distance-related information, which may be understood as a distance between the first terminal device and the base station, or a distance between the first terminal device and the second terminal device, or a communication distance that the first terminal device can cover, or feedback that the first terminal device is within the coverage of the base station.

Alternatively, the feedback information may also include both HARQ information and reference information, and the like, and the embodiment of the present application does not make a unique limitation on which information is specifically included in the feedback information.

It is understood that, in the embodiment of the present application, the data channel may be understood as a channel for carrying first information, and the first information may include feedback information, and the detailed description of the feedback information may refer to the foregoing embodiments, which are not described in detail herein. It can be understood that the feedback information may be specifically referred to as Sidelink Feedback Control Information (SFCI), and the name of the feedback information is not limited uniquely in the embodiments of the present application. Further, the first information may also include data, that is, the data channel may also be understood as a channel used to carry data, for example, the data may be data sent by the first terminal device to the second terminal device, and further, the data may be used to carry service data sent by the first terminal device to the second terminal device. For example, in the sidelink, the data channel may be a physical sidelink shared channel (psch).

It is understood that, as to the specific method for determining the transmission power of the data channel by the first terminal device, reference may be made to the following implementation, which will not be described in detail herein.

502. And the first terminal equipment sends the feedback information to second terminal equipment by using the transmitting power of the data channel, and the second terminal equipment receives the feedback information from the first terminal equipment.

In this embodiment of the present application, the first terminal device may bear the feedback information in a data channel in a puncturing manner, or the first terminal device may also bear the feedback information in the data channel in a rate matching manner, so as to send the feedback information through the data channel.

On the basis of the method shown in fig. 5, it will be explained in detail below how the first terminal device determines the transmit power of the data channel. It is understood that the method for determining the transmission power of the data channel by the first terminal device will be described below by taking the data channel as the psch as an example.

In some embodiments of the present application, the transmit power of the data channel may be determined according to a maximum transmit power, a bandwidth of the data channel, and the first adjustment parameter.

As in fig. 3a and 3b, in this case, the transmission power of the psch may satisfy the following equation:

P₁＝min{P_CMAX,f₁(M₁)+P_O+α×PL+β} (7)

wherein, P₁For the transmission power of the data channel, P_CMAXIs the maximum transmission power, f₁(M₁) For bandwidth M of data channel₁Function of P_OFor the target received power of the second terminal device (which may also be understood as the desired received power of the first terminal device), P L is the path loss estimate, α path loss compensation parameter, configurable by higher layer signaling, β is the first adjustment parameter_CMAXSpecifically, β can be understood as the number of bits of the HARQ, reference information or HARQ and reference information transmitted along with the PSSCH by the feedback informationIn particular, P L may be a path loss estimation value between the first terminal device and the base station, or a path loss estimation value between the first terminal device and the second terminal device, and this embodiment of the present application does not make a unique limitation on this P L.

It is understood that, in this embodiment of the present application, the higher layer signaling may include Radio Resource Control (RRC) signaling, medium access control element (mac ce) signaling, System Information Block (SIB) signaling, and the like, and a specific value of the higher layer signaling is not limited in this embodiment. Optionally, the higher layer signaling may be higher layer signaling under the Uu link, may also be higher layer signaling under the sidelink, or may also be higher layer signaling under other links in the future, and the like, which is not limited in the embodiment of the present application.

Specifically, in the case that the feedback information is SFCI, the transmission power of the psch may satisfy the following formula:

P_PSSCH＝min{P_CMAX,10log₁₀(M_PSSCH)+P_O+α×PL+β_SFCI} (8)

in some embodiments, for equations (7) and (8), the first adjustment parameter β or β_SFCIMay be determined according to a first sub-parameter Ks and a second sub-parameter bpre (bit per resource element), where the first sub-parameter is a parameter related to adjusting a coding scheme (MCS), the second sub-parameter is a parameter related to the number of Resource Elements (REs) of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback informationThe parameters of interest. It is understood that the specific description of the other parameters in the formula (8) can refer to the foregoing embodiments, and the detailed description is omitted here.

Specifically, the first adjustment parameter may satisfy the following formula:

β_SFCI＝10log10(2^BPRE×Ks-1) (9)

the first sub-parameter Ks is an adjustment parameter related to the MCS, and the first sub-parameter Ks may be indicated by higher layer signaling, such as Radio Resource Control (RRC) signaling, and the like, which is not limited in the embodiment of the present invention. For the second subparameter BPRE, the following formula may be satisfied:

wherein Kr is the size of a Code Block (CB), r is the code block index, C is the total number of code blocks, N_REIs the number of REs of the PSSCH. That is, the second sub-parameter is a parameter related to the number of REs occupied by the data channel and the size of the coding block.

Alternatively, for the second subparameter BPRE, the following formula may be satisfied:

wherein, O_CSIFor the bit number of the feedback information such as CSI, the OCSI may also be the sum of the bit number of the feedback information such as CSI and the bit number of Cyclic Redundancy Check (CRC). N is a radical of_REIs the number of REs of the PSSCH. That is, the second sub-parameter may also be a parameter related to the number of REs occupied by the data channel and the number of bits of the feedback information.

It can be understood that the second sub-parameter shown in equation (10) can also be understood as a parameter when the feedback information and the data are simultaneously transmitted in the data channel. The second sub-parameter shown in equation (11) can be understood as a parameter when only feedback information is transmitted in the data channel.

It is understood that the second sub-parameter shown in the formula (10) and the formula (11) is only an example, and in a specific implementation, any modification may be made according to the formula (10) and the formula (11), and therefore, the second sub-parameter should not be construed as limiting the embodiment of the present application.

In some embodiments, for equations (7) and (8), the first adjustment parameter β or β_SFCIMay also be based on the first sub-parameter Ks, the second sub-parameter BPRE and the third sub-parameter SFCI_offsetDetermining that the first sub-parameter is a parameter related to adjusting the coding strategy MCS, the second sub-parameter is a parameter related to the number of Resource Elements (REs) of the data channel and the size of the coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the bit number of the feedback information, and the third sub-parameter is an offset parameter related to the bit number of the feedback information.

Specifically, the first adjustment parameter may satisfy the following formula:

β_SFCI＝10log10[(2^BPRE×Ks-1)×SFCI_offset](12)

the first sub-parameter Ks is an adjustment parameter related to the MCS, and the first sub-parameter Ks may be indicated by higher layer signaling, such as Radio Resource Control (RRC) signaling, and the like, which is not limited in the embodiment of the present invention. For the second sub-parameter BPRE, reference may be made to the detailed descriptions of equation (10) and equation (11), which are not described in detail here.

Wherein for the third sub-parameter SFCI_offsetWhen the feedback information and the data are transmitted simultaneously in the data channel, the value of the third sub-parameter may be 1. When only the feedback information is transmitted in the data channel, the third sub-parameter may be an offset parameter related to the bit number of the feedback information, for example, the larger the bit number of the feedback information is, the larger the value of the third sub-parameter is, or a function corresponding to the bit number of the feedback information changes, and a change trend of the third sub-parameter may be the same as or opposite to the function corresponding to the bit number of the feedback information.

In some embodiments of the present application, the transmit power of the data channel is determined according to a maximum transmit power, a bandwidth of the data channel, a bandwidth of the control channel, and a first adjustment parameter.

In some embodiments, such as 3c in fig. 3, in this case, the transmit power of the data channel satisfies the following formula:

P₁＝f₂(M₁+M₂)+min{P_CMAX,f₃(M₁+M₂)+P_O+α×PL+β} (13)

wherein, P₁For the transmission power of the data channel, P_CMAXIs the maximum transmission power, f₂(M₁+M₂) And f₃(M₁+M₂) Bandwidth M of data channel respectively₁And bandwidth M of the control channel₂Function of P_OFor the target received power of the second terminal device, P L is the estimated path loss, α path loss compensation parameter, configurable by higher layer signaling, β is the first adjustment parameter_CMAXSpecifically, β can be understood as the HARQ of the feedback information transmitted on the PSSCH, the reference information or the parameter of the HARQ related to the bit number of the reference information, and it can be understood that the detailed description of the P L can refer to the description of the formula (7) and is not described in detail here.

Specifically, the transmission power of the psch may satisfy the following formula:

alternatively, equation (14) may be modified as follows:

wherein, P_SSCHFor the transmission power of the data channel, M_PSSCHFor the bandwidth of the data channel, M_PSCCHIs the bandwidth of the control channel. It is understood that the descriptions of other parameters in the formula can refer to the foregoing formula descriptions, and are not repeated here.

In particular, a comparison formula(14) And formula (15), f in formula (13)₂(M₁+M₂) And f₃(M₁+M₂) The following equations may be satisfied, respectively:

it can be understood that for the first adjustment parameter β or β in formula (13), formula (14), and formula (15)_SFCIReference may be made to the detailed description of the foregoing embodiments, such as the detailed description of formula (9), formula (10), formula (11), and formula (12), which is not detailed here.

In some embodiments, such as 3d in fig. 3, in this case, the transmit power of the data channel satisfies the following formula:

P₁＝min{P_CMAX-f₄(M₁+M₂),f₃(M₁+M₂)+P_O+α×PL+β} (18)

wherein, P₁For the transmission power of the data channel, P_CMAXIs the maximum transmission power, f₃(M₁+M₂) And f₄(M₁+M₂) Bandwidth M of data channel respectively₁And bandwidth M of the control channel₂Function of P_OP L is the estimated path loss between the first terminal device and the second terminal device for the target received power of the second terminal device, and β is the first adjustment parameter.

wherein, P_{PSSCH_actual}The actual transmitting power is the PSSCH actual transmitting power determined according to the power use condition; p_PSCCHIs a beltWidth of M_PSSCHIn case of PSSCH transmit power. For example, for 3d of FIG. 3, M_PSSCHI.e. the transmit power of the PSCCH, i.e. M, when the PSCCH is not included in 3d of fig. 3_PSSCHI.e. the entire bandwidth of the PSCCH, and is not limited to the bandwidth excluding the bandwidth of the PSCCH. For example, the bandwidth may be as represented by the arrows shown in the figure. That is, the bandwidth can be understood as the bandwidth when the PSCCH is not included in the figure. It is understood that M in other formulas in the embodiments of the present application_PSSCHThe meanings are not described in detail.

In particular, f₃(M₁+M₂) The formula satisfied can refer to formula (17).

f₄(M₁+M₂) The following equations may be satisfied, respectively:

it can be understood that for the first tuning parameter β or β in formula (18) and formula (19)_SFCIReference may be made to the detailed description of the foregoing embodiments, such as the detailed description of formula (9), formula (10), formula (11), and formula (12), which is not detailed here.

It is to be understood that other variations and the like of the respective formulas shown above are possible, and therefore, the formulas shown in the embodiments of the present application should not be construed as limiting the embodiments of the present application.

Referring to fig. 6, fig. 6 is a flowchart illustrating another power control method provided in this embodiment, where the power control method is applicable to the terminal devices shown in fig. 4a to 4g, and the power control method can also effectively solve the power control problem shown in fig. 3, as shown in fig. 6, the power control method includes:

601. the first terminal equipment determines the transmitting power of a feedback channel; the feedback channel and the data channel are overlapped in both time domain and frequency domain, or the feedback channel and the data channel are overlapped in frequency domain and have no time domain, or the feedback channel and the data channel are overlapped in time domain and have no frequency domain.

In the embodiment of the present application, the feedback channel exists separately, and the feedback channel may be used to carry feedback information. In this case, the frame structure relationship between the data channel and the feedback channel may refer to the structures shown in fig. 7 to 9. As shown in fig. 7, when the data channel and the control channel belong to a time division multiplexing relationship, that is, when the data channel and the control channel have frequency domain overlapping, the feedback channel and the data channel have both time domain overlapping and frequency domain overlapping. As shown in fig. 8, when the data channel and the control channel overlap in both time domain and frequency domain, the feedback channel and the data channel overlap in both time domain and frequency domain, and the feedback channel and the control channel have different relationships. As shown in fig. 9, when the data channel and the control channel belong to a frequency division multiplexing relationship, that is, when the data channel and the control channel have time domain overlap, the feedback channel and the data channel have frequency domain overlap and belong to a time division multiplexing relationship.

Therefore, the embodiments of the present application will focus on determining the transmit power of the feedback channel according to the frame structures shown in fig. 7 to 9, and specific description may refer to the following embodiments, which will not be described in detail herein.

602. And the first terminal equipment sends feedback information to second terminal equipment by using the transmitting power of the feedback channel, and the second terminal equipment receives the feedback information from the first terminal equipment.

In this embodiment, the feedback information may include HARQ information, where the HARQ information includes an Acknowledgement (ACK) or Negative Acknowledgement (NACK), the ACK is used for feeding back successfully received data, and the NACK is used for feeding back unsuccessfully received data. Optionally, the feedback information may further include reference information, and the reference information may include information between the first terminal device and the second terminal device, or the reference information may include information between the first terminal device and the network device, or the reference information may further include information between the first terminal device and the second terminal device, and information between the first terminal device and the network device. Specifically, for example, the reference information may include any one or more of the following items: reference state information such as Channel State Information (CSI) between the first terminal device and the second terminal device; path loss information between the first terminal device and the second terminal device; reference Signal Received Power (RSRP); reference Signal Received Quality (RSRQ). Of course, the above is only an example, and the reference information may further include distance-related information, which may be understood as a distance between the first terminal device and the base station, or a distance between the first terminal device and the second terminal device, or a communication distance that the first terminal device can cover, or feedback that the first terminal device is within the coverage of the base station.

It is understood that in the embodiment of the present application, the control channel may be understood as a channel for carrying Sidelink Control Information (SCI), where the SCI may include decoding information of data transmitted in the data channel, and the like. For example, in the sidelink, the control channel may be a Physical Sidelink Control Channel (PSCCH).

On the basis of the method shown in fig. 6, it will be explained in detail below how the first terminal device determines the transmit power of the feedback channel. It will be appreciated that the method by which the first terminal device determines the transmit power of the feedback channel will be described below by way of example with the data channel being the psch, the control channel being the PSCCH and the feedback channel being the PSFCH.

In some embodiments of the present application, the transmission power of the feedback channel is determined according to the maximum transmission power, the bandwidth of the feedback channel, the bandwidth of the data channel, the power difference between the feedback channel and the data channel, and the second adjustment parameter.

As shown in fig. 7a and 7b, in the case that the PSCCH and the PSCCH employ TDM, the PSFCH and the PSCCH overlap in both time domain and frequency domain, that is, the data channel and the feedback channel are in an embedded multiplexing manner, and the feedback channel is in the region of the data channel, that is, the time-frequency domain resource of the data channel includes the time-frequency domain resource of the feedback channel. In this case, the transmit power of the feedback channel satisfies the following formula:

P₂＝f₅(M₁+M₃)+min{P_CMAX,f₆(M₁+M₃)+P_O+α×PL+Δ} (21)

wherein, P₂For feedback of the transmitted power of the channel, P_CMAXIs the maximum transmission power, f₅(M₁+M₃) And f₆(M₁+M₃) Bandwidth M of data channel respectively₁Bandwidth M of the feedback channel₃And a function of the power difference (not shown in the equation) of the feedback channel and the data channel, P_OP L may be an estimated path loss between the first terminal device and the base station, or an estimated path loss between the first terminal device and the second terminal device, this embodiment is not limited to P L. alternatively, P L may be predefined, and as an example, if the first terminal device is within the coverage of the base station, P L may be an estimated path loss between the first terminal device and the base stationThe P L may be an estimated path loss between the first terminal device and the second terminal device if the first terminal device is out of the coverage area of the base station, or the P L may be configured by higher layer signaling or physical layer signaling, etc., and the specific value of P L is not limited in this embodiment of the present application.

Specifically, the transmit power of the feedback channel may satisfy the following formula:

wherein, P_PSFCHIs the transmission power of the feedback channel, x is the power difference between the feedback channel and the data channel, M_PSFCHFor the bandwidth of the feedback channel, M_PSSCHFor the bandwidth of the data channel, M_PSCCHFor controlling the bandwidth of the channel, Δ_formatIs the second adjustment parameter. The description of the other parameters may refer to the detailed description of equation (21). It is understood that the formula (22) can also be modified according to the modification methods of the formula (3) and the formula (5), and the formula (22) should not be construed as limiting the embodiments of the present application.

Thus, f₅(M₁+M₃) And f₆(M₁+M₃) The following equations may be satisfied, respectively:

f₆(M₁+M₃)＝10log₁₀(M_PSSCH+10^x×M_PSFCH) (24)

for equations (21) and (22), the second manipulated variable Δ or Δ_formatMay be configured by higher layer signaling or the second adjustment parameter may be predefined.

It is understood that, since the feedback information may include HARQ, reference information, or HARQ and reference information, if the feedback information includes HARQ, the second adjustment parameter may be related to the number of bits of HARQ, if the feedback information includes reference information, the second adjustment parameter may be related to the number of bits of reference information, and so on. It is understood that, for the specific implementation of the information included in the feedback information, reference may be made to the foregoing embodiments, and detailed description thereof is omitted here. It is understood that the second adjustment parameter may relate not only to the number of bits of the feedback information, but also to the content included in the feedback information. For example, for different feedback information, the value of the second adjustment parameter may also be different. That is, the second adjustment parameter may be related to not only information included in the feedback information but also the number of bits of information included in the feedback information. The second adjustment parameter may be indicated, for example, by higher layer signaling, or may be predefined by different feedback information or the number of bits of information included in the feedback information.

Optionally, the second adjustment parameter may further relate to the number of bits of the feedback information and the number of Resource Elements (REs) of the feedback channel. The second adjustment parameter may satisfy the following equation:

Δ_format＝10log10(2^BPRE×K-1) (25)

where K is a power adjustment factor, for example, different feedback information may correspond to different K, e.g., K may be indicated by higher layer signaling. Wherein BPRE ═ O_SFCI/N_REWherein O is_SFCIFor the feedback information, e.g. the number of bits of HARQ, the number of bits of CSI of the reference information, the number of bits of other information included in the reference information, e.g. the number of bits of HARQ and CRC, the number of bits of CSI and CRC, etc., N_REIs the number of REs occupied by the PSFCH.

Further, the second adjustment parameter may be associated with different modes, such as in the base station scheduling mode and in the contention mode, the second adjustment parameter may be different. Alternatively, the second adjustment parameter may also be different according to different transmission links, for example, the second adjustment parameter may be different in the link between the base station and the terminal device than in the link between the terminal device and the terminal device. It is understood that the value of the second adjustment parameter may also be independent of the mode, or independent of the transmission link, and the like, and the embodiment of the present application is not limited.

For equations (21) to (24), the power difference x of the feedback channel and the data channel is predefined, or the power difference x of the feedback channel and the data channel is indicated by the control information; or the power difference x between the feedback channel and the data channel is configured by higher layer signaling, and the like, and how this x is set is not limited in the embodiment of the present application. Specifically, if x is predefined, x may be associated with different frame structures, which may be different according to the different frame structures shown in fig. 7 to 9. Also, x can be dynamically indicated by the SCI via 1bit or 2bits, etc. It is understood that the value of x may be a positive number, a negative number, or 0.

In the embodiment of the present application, in the frame structure shown in fig. 7, by setting the power difference between the feedback channel and the data channel, the demodulation of the feedback channel can be facilitated. If the transmission power of the feedback channel is higher than that of the data channel, the demodulation efficiency and accuracy of the feedback channel can be effectively improved.

It can be understood that, in the frame structure shown in fig. 7, as to the formula that the transmission power of the data channel and the control channel satisfies, reference may be made to the formula shown in fig. 3, and the embodiment of the present application does not limit the formula or the condition that the transmission power of the data channel and the control channel satisfies as shown in fig. 7.

In some embodiments, as shown in fig. 8a, since the PSFCH and the PSSCH overlap in both time domain and frequency domain, and have the same frame structure as that shown in fig. 7, the formula satisfied by the PSFCH in 8a of fig. 8 can refer to the specific implementation of fig. 7, and is not described in detail here. Wherein, whether the power difference between the data channel and the feedback channel in 8a of fig. 8 is the same as the power difference between the data channel and the feedback channel in fig. 7 is not limited in this embodiment of the present application. That is, for the same parameter, different values may be taken in different graphs.

It can be understood that the transmission power of the PSCCH in 8a of fig. 8 can satisfy the following formula because the PSFCH and the overlapping portion of the PSCCH and the PSCCH need to be considered:

optionally, the transmission power of the psch may also satisfy the following formula:

it is understood that, for the specific implementation of the parameters in the formula (26) and the formula (27), reference may be made to the foregoing implementation, and the detailed description is omitted here. As for M in equation (26) and equation (27)_PSSCHThe bandwidth represents the bandwidth of the entire PSCCH in 8a of fig. 8, i.e. the bandwidth of the PSCCH when the PSCCH and the PSFCH are not included in the figure. For example, the bandwidth may be the bandwidth indicated by the arrow in the figure. Also as P in the formula_{PSSCH_actual}May be the actual transmit power of the psch, i.e., the actual transmit power of the psch determined from power usage, etc.

For 8b in fig. 8, in some embodiments of the present application, the transmit power of the feedback channel may also be determined according to the maximum transmit power, the bandwidth of the feedback channel, the bandwidth of the control channel, the power difference between the feedback channel and the control channel, and the second adjustment parameter.

As shown in fig. 8b, the time-frequency domain resources of the PSFCH overlap with the time-frequency domain resources of the PSSCH, and the PSCCH overlaps with the time-domain resources of the PSFCH, which belongs to frequency division multiplexing. Therefore, different power boosting may be used according to the multiplexing priority rules of the PSCCH, and PSCCH, such as PSCCH > PSCCH. And due to the multiplexing relationship between the PSFCH and the PSCCH, the power difference y between the PSFCH and PSCCH may be considered. It is understood that in this case, there may also be a power difference x between the PSFCH and the PSSCH, and reference may be made to the foregoing embodiments for this case, and detailed description is omitted here.

Therefore, the transmit power of the feedback channel satisfies the following equation:

P₂＝f₇(M₂+M₃)+min{P_CMAX,f₈(M₂+M₃)+P_O+α×PL+Δ} (28)

wherein, P₂For feedback of the transmitted power of the channel, P_CMAXIs the most importantHigh transmission power, f₇(M₂+M₃) And f₈(M₂+M₃) Bandwidth M of the control channel respectively₂Bandwidth M of the feedback channel₃And a function of the power difference of the feedback channel and the control channel, P_OP L is the path loss estimate and Δ is the second adjustment parameter for the target received power of the second terminal device.

wherein, the power difference y between the feedback channel and the control channel is predefined, or the power difference y between the feedback channel and the control channel is indicated by the control information; alternatively, the power difference y between the feedback channel and the control channel is configured by higher layer signaling. It is understood that, for the specific implementation of the relevant parameters in the formula (28) and the formula (29), reference may be made to the implementation of the foregoing embodiments, and the detailed description is omitted here.

Further, in this case, the transmission power of the psch may satisfy the following equation:

optionally, the transmission power of the PSSCH may further satisfy the following formula:

it is understood that, for the specific implementation of the relevant parameters in the formula (30) and the formula (31), reference may be made to the implementation of the foregoing embodiment, and the detailed description is omitted here.

In some embodiments, as shown in fig. 9a, since the PSFCH and the PSCCH employ frequency division multiplexing, the transmit power of the PSFCH can be determined by the power difference between the PSCCH and the PSFCH. Thus, the formula satisfied by PSFCH in 9a in fig. 9 can refer to the specific implementation of formula (28) and formula (29) shown in 8b in fig. 8, and is not described in detail here. And the equations satisfied by PSFCH in 9b in fig. 9 may also refer to the specific embodiments of equations (28) and (29) shown in 8b in fig. 8. It is understood that although there is also a difference between the PSCCH and the PSFCH in fig. 9, whether the power difference between the PSCCH and the PSFCH in fig. 9 is the same as the power difference between the PSCCH and the PSFCH in fig. 8 is not limited in this embodiment of the application.

Further, 9b in fig. 9, the transmission power of the psch may satisfy the following formula:

wherein z in equation (32) and equation (33) is the power difference between PSFCH and PSSCH.

It is understood that, for the specific implementation of the relevant parameters in the formula (32) and the formula (33), reference may be made to the implementation of the foregoing embodiment, and the detailed description is omitted here.

It can be understood that although some parameters in the above formulas represent the same, in a specific implementation, the same parameters may have different values according to different frame structures, i.e., the structures shown in fig. 7 to 9. For example, x in fig. 7 and 8 may have different values, y in fig. 8 and 9 may have different values, and so on, which are not listed here.

It is understood that the above embodiments are each directed to a particular embodiment, and therefore, reference may be made to embodiments in other embodiments, which are not described in detail in one embodiment.

It should be noted that the units of the formulas in the embodiments shown in the present application are not described in detail, and it is understood that the units of the transmission power of each channel in the foregoing embodiments are dBm.

It should be noted that the unit of the bandwidth in the embodiments shown in the present application, such as the bandwidth of the PSCCH, and the bandwidth of the PSFCH, may be the number of Resource Blocks (RBs). I.e., the number of bandwidth available RBs in the various embodiments described above.

The power control apparatus provided in the embodiments of the present application, which may be a terminal device (e.g., a first terminal device), or a component or a chip in the terminal device, for implementing the above functions, will be described in detail below.

Referring to fig. 10, fig. 10 is a schematic structural diagram of a power control apparatus provided in an embodiment of the present application, where the power control apparatus may be used to perform the method described in the embodiment of the present application, and as shown in fig. 10, the power control apparatus includes:

a processing unit 1001 for determining a transmit power of a data channel; the data channel comprises first information, and the first information comprises feedback information;

a sending unit 1002, configured to send the feedback information to a second terminal device with the transmission power of the data channel.

In a possible implementation manner, the transmission power of the data channel is determined according to a maximum transmission power, a bandwidth of the data channel, and a first adjustment parameter;

or, the transmission power of the data channel is determined according to the maximum transmission power, the bandwidth of the data channel, the bandwidth of the control channel, and the first adjustment parameter.

In one possible implementation manner, the first adjustment parameter is determined according to a first sub-parameter and a second sub-parameter, the first sub-parameter is a parameter related to adjustment of a coding strategy MCS, the second sub-parameter is a parameter related to the number of resource elements RE of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of RE of the data channel and the number of bits of the feedback information.

In one possible implementation, the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter and a third sub-parameter, the first sub-parameter is a parameter related to adjustment of a coding scheme MCS, the second sub-parameter is a parameter related to the number of resource elements RE of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of RE of the data channel and the number of bits of the feedback information, and the third sub-parameter is an offset parameter related to the number of bits of the feedback information.

In a possible implementation manner, the feedback information includes hybrid automatic repeat request HARQ information, or the feedback information includes reference information, or the feedback information includes the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

In a possible implementation manner, the reference information includes one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

In a possible implementation manner, the transmission power of the data channel satisfies the following formula:

P₁＝min{P_CMAX,f₁(M₁)+P_O+α×PL+β}

wherein, the above P₁For the transmission power of the data channel, the P_CMAXFor the maximum transmission power, above f₁(M₁) Bandwidth M for the data channel₁A function of (a), the above P_OFor the above-mentioned target received power of the second terminal device,the P L is a pathloss estimation value, and the β is the first adjustment parameter.

P₁＝f₂(M₁+M₂)+min{P_CMAX,f₃(M₁+M₂)+P_O+α×PL+β}

wherein, the above P₁For the transmission power of the data channel, the P_CMAXFor the maximum transmission power, above f₂(M₁+M₂) And above f₃(M₁+M₂) Bandwidths M of the above data channels, respectively₁And the bandwidth M of the control channel₂A function of (a), the above P_OThe P L is a path loss estimate and the β is the first adjustment parameter, which is the target received power of the second terminal device.

P₁＝min{P_CMAX-f₄(M₁+M₂),f₃(M₁+M₂)+P_O+α×PL+β}

wherein, the above P₁For the transmission power of the data channel, the P_CMAXFor the maximum transmission power, above f₃(M₁+M₂) And above f₄(M₁+M₂) Bandwidths M of the above data channels, respectively₁And the bandwidth M of the control channel₂A function of (a), the above P_OThe P L is a path loss estimate and the β is the first adjustment parameter, which is the target received power of the second terminal device.

It is to be understood that, when the above-mentioned power control apparatus is a terminal device or a component in the terminal device, which implements the above-mentioned functions, the processing unit 1001 may be one or more processors, and the transmitting unit 1002 may be a transmitter. When the power control apparatus is a chip, the processing unit 1001 may be one or more processors, and the transmitting unit 1002 may be an output interface. In a possible implementation manner, the power control apparatus may further include a receiving unit, and when the power control apparatus is a terminal device or a component in the terminal device, the receiving unit (not shown in the figure) may be a receiver, or the transmitting unit 1002 and the receiving unit are integrated into one device, such as a transceiver. When the power control device is a chip, the receiving unit may be an input interface, or the transmitting unit 1002 and the receiving unit are integrated into one unit, such as an input-output interface.

In some embodiments of the present application, the power control apparatus shown in fig. 10 may be further configured to:

a processing unit 1001 configured to determine a transmit power of a feedback channel; the feedback channel and the data channel are overlapped in both time domain and frequency domain, or the feedback channel and the data channel are overlapped in frequency domain and have no time domain, or the feedback channel and the data channel are overlapped in time domain and have no frequency domain;

a sending unit 1002, configured to send feedback information to the second terminal device with the transmission power of the feedback channel.

In a possible implementation manner, the transmission power of the feedback channel is determined according to a maximum transmission power, a bandwidth of the feedback channel, a bandwidth of the data channel, a power difference between the feedback channel and the data channel, and a second adjustment parameter;

or, the transmission power of the feedback channel is determined according to the maximum transmission power, the bandwidth of the feedback channel, the bandwidth of a control channel, the power difference between the feedback channel and the control channel, and a second adjustment parameter.

In a possible implementation manner, the second adjustment parameter is configured by a higher layer signaling, or the second adjustment parameter is predefined.

In a possible implementation manner, the second adjustment parameter is related to the number of bits of the feedback information and the number of Resource Elements (REs) of the feedback channel.

In a possible implementation manner, the power difference between the feedback channel and the data channel is predefined, or the power difference between the feedback channel and the data channel is indicated by control information; or, the power difference between the feedback channel and the data channel is configured by a high-level signaling;

the power difference between the feedback channel and the control channel is predefined, or the power difference between the feedback channel and the control channel is indicated by the control information; or, the power difference between the feedback channel and the control channel is configured by the high-level signaling.

In a possible implementation manner, the transmission power of the feedback channel satisfies the following formula:

P₂＝f₅(M₁+M₃)+min{P_CMAX,f₆(M₁+M₃)+P_O+α×PL+Δ}

wherein, the above P₂For the transmission power of the feedback channel, the P_CMAXFor the maximum transmission power, above f₅(M₁+M₃) And above f₆(M₁+M₃) Bandwidths M of the above data channels, respectively₁Bandwidth M of the feedback channel₃And a function of a power difference between the feedback channel and the data channel, P_OP L is a path loss estimate value and Δ is the second adjustment parameter, which is the target received power of the second terminal device.

P₂＝f₇(M₂+M₃)+min{P_CMAX,f₈(M₂+M₃)+P_O+α×PL+Δ}

wherein, the above P₂For the transmission power of the feedback channel, the P_CMAXFor the maximum transmission power, above f₇(M₂+M₃) And above f₈(M₂+M₃) Bandwidths M of the control channels₂Bandwidth M of the feedback channel₃And a function of the power difference between the feedback channel and the control channel, P_OP L is a path loss estimate value and Δ is the second adjustment parameter, which is the target received power of the second terminal device.

It can be understood that the embodiment of the power control apparatus shown in fig. 10 may correspond to the embodiment of the method shown in fig. 5 and 6, and the embodiments of the equations (7) to (33) shown in fig. 7 to 9, and will not be described in detail here.

Referring to fig. 11, fig. 11 is a schematic structural diagram of a terminal device 1100 according to an embodiment of the present application. The terminal device may perform the operation of the first terminal device in the methods as shown in fig. 5 and 6, or the terminal device may also perform the operation of the power control apparatus as shown in fig. 10.

For convenience of explanation, fig. 11 shows only main components of the terminal device. As shown in fig. 11, terminal apparatus 1100 includes a processor, memory, a radio frequency link, an antenna, and input-output devices. The processor is mainly used for processing the communication protocol and the communication data, controlling the whole terminal device, executing the software program, and processing the data of the software program, for example, for supporting the terminal device to execute the flow described in fig. 5 and 6. The memory is used primarily for storing software programs and data. The radio frequency link is mainly used for conversion of baseband signals and radio frequency signals and processing of the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. The terminal device 1100 may also include input and output means such as a touch screen, a display screen, a keyboard, etc. for primarily receiving data input by a user and for outputting data to the user. It should be noted that some kinds of terminal devices may not have input/output devices.

When the terminal device is turned on, the processor can read the software program in the storage unit, interpret and execute the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency link after performing baseband processing on the data to be sent, and the radio frequency link performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal equipment, the radio frequency link receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 11 shows only one memory and processor for ease of illustration. In an actual terminal device, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this application.

As an optional implementation, the processor may include a baseband processor and a Central Processing Unit (CPU), the baseband processor is mainly used for processing communication protocols and communication data, the CPU is mainly used for controlling the whole terminal device, executing software programs, and processing data of the software programs, optionally, the processor may also be a Network Processor (NP) or a combination of the CPU and the NP, the processor may further include a hardware chip, the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (P L D), or a combination thereof, the P L D may be a complex programmable logic device (CP L D), a field programmable logic device (FPGA), a general array logic device (general array, L), or a combination thereof, and the processor may also include a non-volatile memory (e.g., a flash-random access memory (SSD-random access memory), or a nonvolatile memory (SSD-volatile memory), or a nonvolatile memory (SSD-nonvolatile memory).

For example, in the embodiment of the present application, the antenna and the radio frequency link with transceiving functions may be regarded as the transceiving unit 1101 of the terminal device 1100, and the processor with processing function may be regarded as the processing unit 1102 of the terminal device 1100.

As shown in fig. 11, the terminal device 1100 may include a transceiving unit 1101 and a processing unit 1102. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Optionally, a device for implementing the receiving function in the transceiving unit 1101 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiving unit 1101 may be regarded as a transmitting unit, that is, the transceiving unit 1101 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitting circuit, etc.

In some embodiments, the transceiver unit 1101 and the processing unit 1102 may be integrated into a single device, or may be separated into different devices, and the processor and the memory may be integrated into a single device, or may be separated into different devices. For example, in one embodiment, the transceiver unit 1101 may be configured to perform the method illustrated in step 502 shown in fig. 5. As another example, in one embodiment, the transceiver unit 1101 may also be configured to perform the method illustrated in step 602 illustrated in fig. 6.

For another example, in an embodiment, the processing unit 1102 may be configured to execute the method shown in step 502 of fig. 5 by controlling the transceiver unit 1101, and the processing unit 1102 may also be configured to control the transceiver unit 1101 to execute the method shown in step 602 of fig. 6.

As another example, in one embodiment, the processing unit 1102 may also be configured to perform the method illustrated in step 501 shown in fig. 5, and the method illustrated in step 601 shown in fig. 6.

As another example, in one embodiment, the transceiver unit 1101 may also be used to perform the method illustrated by the transmitting unit 1002. As another example, in one embodiment, the processing unit 1102 may also be used to perform the methods illustrated by the processing unit 1001.

It is to be understood that, for implementation of the terminal device in the embodiment of the present application, reference may be made to the foregoing embodiments specifically, and details are not described here.

The embodiment of the application also provides a computer readable storage medium. All or part of the processes in the above method embodiments may be performed by relevant hardware instructed by a computer program, which may be stored in the above computer storage medium, and when executed, may include the processes in the above method embodiments. The computer readable storage medium may be an internal storage unit of the power control apparatus (including the data sending end and/or the data receiving end) of any of the foregoing embodiments, for example, a hard disk or a memory of the power control apparatus. The computer readable storage medium may also be an external storage device of the power control apparatus, such as a plug-in hard disk, a Smart Memory Card (SMC), a Secure Digital (SD) card, a flash memory card (flash card), and the like, which are provided on the power control apparatus. Further, the computer readable storage medium may include both an internal storage unit and an external storage device of the power control apparatus. The computer-readable storage medium stores the computer program and other programs and data required by the power control apparatus. The above-described computer-readable storage medium may also be used to temporarily store data that has been output or is to be output.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in or transmitted over a computer-readable storage medium. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The steps in the method of the embodiment of the application can be sequentially adjusted, combined and deleted according to actual needs.

The modules in the device can be merged, divided and deleted according to actual needs.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method of power control, comprising:

the first terminal equipment determines the transmitting power of a data channel; the data channel comprises first information, and the first information comprises feedback information;

and the first terminal equipment sends the feedback information to second terminal equipment by using the transmitting power of the data channel.

2. The method of claim 1, wherein the transmit power of the data channel is determined according to a maximum transmit power, a bandwidth of the data channel, and a first adjustment parameter;

3. The method according to claim 2, wherein the first adjustment parameter is determined from a first sub-parameter and a second sub-parameter; the first sub-parameter is a parameter related to adjusting a coding strategy MCS, and the second sub-parameter is a parameter related to the number of Resource Elements (REs) of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.

4. The method of claim 2, wherein the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter, and a third sub-parameter; the first sub-parameter is a parameter related to adjusting a coding strategy MCS, the second sub-parameter is a parameter related to the number of Resource Elements (REs) of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the bit number of the feedback information, and the third sub-parameter is an offset parameter related to the bit number of the feedback information.

5. The method according to any of claims 1-4, wherein the feedback information comprises hybrid automatic repeat request, HARQ, information, or reference information, or the feedback information comprises the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

6. The method of claim 5, wherein the reference information comprises one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

7. A method of power control, comprising:

the first terminal equipment determines the transmitting power of a feedback channel; the feedback channel and the data channel are overlapped in both time domain and frequency domain, or the feedback channel and the data channel are overlapped in frequency domain and have no time domain, or the feedback channel and the data channel are overlapped in time domain and have no frequency domain;

and the first terminal equipment sends feedback information to the second terminal equipment by using the transmission power of the feedback channel.

8. The method of claim 7, wherein the transmission power of the feedback channel is determined according to a maximum transmission power, a bandwidth of the feedback channel, a bandwidth of the data channel, a power difference between the feedback channel and the data channel, and a second adjustment parameter;

or the transmitting power of the feedback channel is determined according to the maximum transmitting power, the bandwidth of the feedback channel, the bandwidth of a control channel, the power difference value between the feedback channel and the control channel, and a second adjusting parameter.

9. The method of claim 8, wherein the second adjustment parameter is configured by higher layer signaling or the second adjustment parameter is predefined.

10. The method according to claim 8 or 9, wherein the second adjustment parameter relates to the number of bits of the feedback information and the number of Resource Elements (REs) of the feedback channel.

11. The method according to any of claims 8-10, wherein the power difference of the feedback channel and the data channel is predefined or indicated by control information; or the power difference value of the feedback channel and the data channel is configured by high-level signaling;

the power difference of the feedback channel and the control channel is predefined, or the power difference of the feedback channel and the control channel is indicated by the control information; or the power difference value of the feedback channel and the control channel is configured by the high-layer signaling.

12. The method according to any of claims 7-11, wherein the feedback information comprises hybrid automatic repeat request, HARQ, information, or wherein the feedback information comprises reference information, or wherein the feedback information comprises the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

13. The method of claim 12, wherein the reference information comprises one or more of reference state information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

14. A terminal device, wherein the terminal device is configured to operate as a first terminal device, wherein the first terminal device comprises a processor, a memory, and a transceiver, wherein the processor is coupled to the memory;

the processor is configured to determine a transmit power of a data channel; the data channel comprises first information, and the first information comprises feedback information;

the transceiver is coupled to the processor, and the transceiver is configured to transmit the feedback information to a second terminal device at a transmission power of the data channel.

15. The terminal device of claim 14, wherein the transmission power of the data channel is determined according to a maximum transmission power, a bandwidth of the data channel, and a first adjustment parameter;

16. The terminal device according to claim 15, wherein the first adjustment parameter is determined according to a first sub-parameter and a second sub-parameter; the first sub-parameter is a parameter related to adjusting a coding strategy MCS, and the second sub-parameter is a parameter related to the number of Resource Elements (REs) of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the number of bits of the feedback information.

17. The terminal device according to claim 15, wherein the first adjustment parameter is determined according to a first sub-parameter, a second sub-parameter and a third sub-parameter; the first sub-parameter is a parameter related to adjusting a coding strategy MCS, the second sub-parameter is a parameter related to the number of Resource Elements (REs) of the data channel and the size of a coding block, or the second sub-parameter is a parameter related to the number of REs of the data channel and the bit number of the feedback information, and the third sub-parameter is an offset parameter related to the bit number of the feedback information.

18. The terminal device according to any of claims 14-17, wherein the feedback information comprises hybrid automatic repeat request, HARQ, information, or reference information, or the feedback information comprises the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

19. The terminal device of claim 18, wherein the reference information comprises one or more of reference status information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

20. A terminal device, wherein the terminal device is configured to operate as a first terminal device, wherein the first terminal device comprises a processor, a memory, and a transceiver, wherein the processor is coupled to the memory;

the processor is configured to determine a transmit power of a feedback channel; the feedback channel and the data channel are overlapped in both time domain and frequency domain, or the feedback channel and the data channel are overlapped in frequency domain and have no time domain, or the feedback channel and the data channel are overlapped in time domain and have no frequency domain;

the transceiver is coupled to the processor, and is configured to send feedback information to a second terminal device at the transmission power of the feedback channel.

21. The terminal device of claim 20, wherein the transmission power of the feedback channel is determined according to a maximum transmission power, a bandwidth of the feedback channel, a bandwidth of the data channel, a power difference between the feedback channel and the data channel, and a second adjustment parameter;

22. The terminal device of claim 21, wherein the second adjustment parameter is configured by higher layer signaling or is predefined.

23. The terminal device of claim 22, wherein the second adjustment parameter relates to a number of bits of the feedback information and a number of Resource Elements (REs) of the feedback channel.

24. The terminal device according to any of claims 21-23, wherein the power difference of the feedback channel and the data channel is predefined or indicated by control information; or the power difference value of the feedback channel and the data channel is configured by high-level signaling;

25. The terminal device according to any of claims 20-24, wherein the feedback information comprises hybrid automatic repeat request, HARQ, information, or reference information, or the feedback information comprises the HARQ information and the reference information; the reference information includes information between the first terminal device and the second terminal device, and/or information between the first terminal device and a network device.

26. The terminal device of claim 25, wherein the reference information comprises one or more of reference status information between the first terminal device and the second terminal device, reference signal received power, reference signal received quality, and path loss information between the first terminal device and the second terminal device.

27. A computer-readable storage medium, characterized in that the computer-readable storage medium stores program instructions which, when executed by a processor of a computer, cause the processor to carry out the respective method according to any one of claims 1-13.