WO2018228536A1

WO2018228536A1 - Method for determining power margin and network device

Info

Publication number: WO2018228536A1
Application number: PCT/CN2018/091513
Authority: WO
Inventors: 纪刘榴; 任海豹; 秦龙; 李元杰
Original assignee: 华为技术有限公司
Priority date: 2017-06-16
Filing date: 2018-06-15
Publication date: 2018-12-20
Also published as: CN109151979B; CN109151979A

Abstract

Disclosed in embodiments of the present invention are a method for determining power margin and a network device. The method comprises: a first network device receives first indication information from a second network device, the first indication information being used for indicating time-frequency resources of a first PUCCH; the first network device determines the transmit power of the first PUCCH; the first network device determines a first PH, the first PH being a difference of the maximum transmit power of the first network device and the transmit power of the first PUCCH. By means of the embodiments of the present invention, the reliability or efficiency of data transmission can be improved so as to ensure normal transmission of data.

Description

Method for determining power headroom and network equipment

This application claims the priority of the Chinese Patent Application filed on June 16, 2017, the Chinese Patent Office, the application number is 201710458943.2, and the application name is "the method for determining the power headroom and the network equipment", the entire contents of which are incorporated herein by reference. In the application.

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and a network device for determining a power headroom.

Background technique

Currently, when the base station is in communication with the user equipment (User Equipment, UE), the UE can calculate the power headroom (English: Power Headroom, abbreviated as PH) and report the calculated PH to the base station, so that the base station can The PH adjusts scheduling information for the UE to improve the reliability or efficiency of data transmission. Wherein, the PH refers to a value of the maximum transmit power of the UE minus the power required to transmit the signal, which may be a positive value or a negative value. For example, if the PH reported by the UE is a negative value, the base station may reduce the bandwidth resource scheduled to the UE to reduce the transmission power. Otherwise, the maximum transmit power of the UE may be smaller than the power required to transmit the signal, thereby causing the transmission. The power of the signal is limited and the data transmission is not reliable.

In Long Term Evolution (LTE), when a signal is transmitted, some serving cells only transmit PUSCH, and for cells supporting CA, they can simultaneously send physical uplink control channels (English: Physical Uplink Shared Channel) , abbreviation: PUSCH) and physical uplink control channel (English: Physical Uplink Control Channel, abbreviation: PUCCH). The PUCCH and the PUSCH can only be multiplexed in one slot in a frequency division manner. Therefore, when calculating the PH, the UE only considers to separately transmit the PUSCH or simultaneously transmit the PHs under the PUSCH and the PUCCH. With the continuous development of the communication technology, the method of only transmitting the PUSCH or transmitting the PH under the PUSCH and the PUCCH at the same time does not satisfy the increasing communication requirement of the user, and the calculated PH is unreliable.

Summary of the invention

The present application provides a method for determining a power headroom and a network device, which helps to improve the reliability of data transmission.

In one aspect, the present application provides a method for determining a power headroom, including:

The first network device may receive the first indication information from the second network device, and may determine the first PH, where the first PH may be determined by using the transmit power of the first PUCCH. The first indication information is used to indicate a time-frequency resource of the first PUCCH, where the first PH is a difference between a maximum transmit power of the first network device and a transmit power of the first PUCCH. Specifically, the second network device may determine the first indication information of the time-frequency resource used to indicate the first PUCCH, and send the first indication information to the first network device, so that the first network device can obtain the first Instructions. Therefore, the first network device can determine the PH value under the PUCCH according to the first indication information, so that the PH calculation in the independent transmission PUCCH scenario is implemented.

In a possible design, the first network device may be a UE or a base station; the second network device may be a base station or a UE. The communication involved in the present application may be between the base station and the UE, or between the base station and the base station, such as between the macro base station and the small base station, and may also be communication between the UE and the UE.

In a possible design, the first indication information may be explicitly indicated when the time-frequency resource of the first PUCCH is indicated, and the first indication information may include the time domain and/or frequency of the first PUCCH. The domain resource may be implicitly indicated, for example, the first indication information may include type information of the first PUCCH, and the time domain and/or the frequency domain resource of the first PUCCH is indicated by the type information; The combination of the indication and the implicit indication, for example, the first indication information may include frequency domain resources and type information of the first PUCCH, and the time domain information of the first PUCCH is indicated by the type information. Optionally, the transmit power of the first PUCCH may be the power used to transmit the first PUCCH, or may be the power density used to indicate the power of the first PUCCH (ie, the bandwidth occupied by the first PUCCH is regarded as 1 hour power). Further optionally, the time domain information occupied by the first PUCCH may be a symbol, for example, the first PUCCH may be occupied by 1 symbol or 2 symbols.

In a possible design, after determining the first PH, the first network device may also send the first PH to the second network device. Therefore, the second network device can perform power control operations on the UE according to the PH value reported by the first network device, so as to improve reliability or efficiency of data transmission and ensure normal data transmission.

In a possible design, the first network device may further receive second indication information from the second network device, where the second indication information may be used to indicate a sending manner of the first PUCCH, and a format of the carried information. At least one of a path loss parameter, a nominal power, and a power adjustment parameter. Further, when determining the transmit power of the first PUCCH, the first network device may determine, according to the first indication information and/or the second indication information, a transmit power of the first PUCCH. Specifically, the second network device may determine the second indication information, and send the second indication information to the first network device, so that the first network device may obtain the second indication information, and further combine the second indication information. The one or more parameters indicated determine the transmit power and/or PH of the signal.

In a possible design, the time unit in which the first PUCCH is located may also have a PUSCH, and the first PUCCH and the PUSCH may be time division multiplexed. The first network device may further determine a second PH, where the second PH may be a difference between the maximum transmit power and the transmit power of the PUSCH. That is, in a time unit such as a subframe, the first network device may separately transmit the PUSCH and the PUCCH in a time division manner, and calculate the PH of each part. Optionally, the first network device may further send the first PH and/or the second PH to the second network device.

In a possible design, the time unit in which the first PUCCH is located may also have a second PUCCH, and the first PUCCH and the second PUCCH may be time division multiplexed. The first network device may further determine a third PH, where the third PH may be a difference between the maximum transmit power and the transmit power of the second PUCCH. Optionally, the types of the first PUCCH and the second PUCCH may be the same or different. That is, in a time unit such as a subframe, the first network device may separately transmit the first PUCCH and the second PUCCH in a time division manner, and further calculate the PH of each part. Further optionally, the first network device may further send the first PH and/or the third PH to the second network device.

In a possible design, the time unit in which the first PUCCH is located may also have a second PUCCH and a PUSCH, the first PUCCH and the second PUCCH may be time division multiplexed, and the second PUCCH and the PUSCH may be Frequency division multiplexing. The first network device may further determine a fourth PH, where the fourth PH may be a difference between the maximum transmit power and a sum of the second PUCCH and the transmit power of the PUSCH. Optionally, the types of the first PUCCH and the second PUCCH may be the same or different. That is, in a time unit such as a subframe, the first network device may separately transmit the PUSCH and the first PUCCH in a time division manner, respectively transmit the first PUCCH and the second PUCCH in a time division manner, and simultaneously transmit the PUSCH in a frequency division manner. And the second PUCCH, and then the PH of each part can be calculated. Further optionally, the first network device may further send the first PH and/or the fourth PH to the second network device.

In a possible design, the time unit in which the first PUCCH is located may further have a reference signal, and the first PUCCH and the reference signal may be time division multiplexed. The first network device may further determine a fifth PH, where the fifth PH may be a difference between the maximum transmit power and the transmit power of the reference signal. That is, in a time unit such as a subframe, the first network device may separately transmit the first PUCCH and the reference signal in a time division manner, and further calculate the PH of each part. Further optionally, the first network device may further send the first PH and/or the fifth PH to the second network device.

In a possible design, the first network device may also send the calculated partial PHs to the second network device, such as transmitting the first PH and/or the second PH and/or the third PH and/or The fourth PH and/or the fifth PH may specifically send all of the calculated PHs or select a maximum or minimum PH for reporting. The manner of the reported PH (that is, which one or which PHs are sent) may be pre-negotiated by the first network device and the second network device, such as specified by a protocol, or notified by the second network device to the first network. For the device, for example, the first network device is notified dynamically or semi-statically by means of signaling, which is not limited in this application.

In another aspect, the present application also provides a method for determining a power headroom, including:

The first network device receives the indication information from the second network device, where the indication information is used to indicate a sending signal of the first network device in a time unit, where the sending signal may include a first PUCCH, a PUSCH, a second PUCCH, and At least two of the reference signals, and the indication information may indicate that there is a bandwidth occupied by each of the signals in the transmission signal. Therefore, the first network device may determine a PH according to a bandwidth occupied by each signal, where the PH may be a difference between a maximum transmit power of the first network device and a transmit power of the transmit signal. Specifically, the second network device may determine the indication information used to indicate the sending signal of the first network device in a time unit, and send the indication information to the first network device, so that the first network device can obtain the The indication information. Thereby, the first network device can determine a uniform PH value according to the indication information.

In a possible design, the transmit signal may include a first PUCCH and a PUSCH, where the first PUCCH and the PUSCH may be time division multiplexed; or, the transmit signal may include a first PUCCH and a second PUCCH, where The first PUCCH and the second PUCCH may be time division multiplexed; or the transmit signal may include a first PUCCH, a second PUCCH, and a PUSCH, the first The PUCCH and the second PUCCH may be time division multiplexed, and the second PUCCH and the PUSCH may be frequency division multiplexed; or the transmit signal may include a first PUCCH and a reference signal, the first PUCCH and the reference The signals may be time division multiplexed, etc., and the signal content included in the transmission signal is not enumerated here. Optionally, the transmit power of the transmit signal may include a sum of transmit powers of the signals, and the transmit power of the signal may refer to the power of transmitting the signal, or may be a power density used to indicate the power of transmitting the signal (ie, the The bandwidth occupied by the signal is regarded as the power at 1).

In a possible design, when the PH is determined according to the bandwidth occupied by each signal, the first network device may be specifically: when the transmission signal does not include the first PUCCH, the PUSCH, the second PUCCH, and the reference signal. When any signal is used, the first network device may determine the bandwidth occupied by any signal as 0 (that is, a virtual bandwidth); the bandwidth occupied by the first network device according to each signal included in the transmission signal (the bandwidth may be Determining the transmission power of each signal for the actual transmission bandwidth) and the bandwidth occupied by the signals not included; thus, the first network device may difference the sum of the maximum transmission power of the first network device and the transmission power of each signal. The value is determined as the PH.

In a possible design, after determining the PH, the first network device may also send the PH to the second network device. Therefore, the second network device can perform power control operations on the UE according to the PH value reported by the first network device, so as to improve reliability or efficiency of data transmission and ensure normal data transmission.

In still another aspect, the present application provides a network device having a function of implementing behavior of a first network device in the above method example. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible design, the solution implemented by the above network device can be implemented by a chip.

In a possible design, the structure of the network device may include: a processing unit and a transceiver unit, the processing unit being configured to support the first network device to perform a corresponding function in the foregoing method. The transceiver unit is configured to support communication between the first network device and other devices, such as the second network device. The network device can also include a storage unit for coupling with the processing unit that holds program instructions and data necessary for the network device. As an example, the processing unit may be a processor, the transceiver unit may be a transceiver, and the storage unit may be a memory.

In still another aspect, the present application provides a network device having a function of implementing behavior of a second network device in the above method example. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible design, the structure of the network device may include: a processing unit and a transceiver unit, the processing unit being configured to support the second network device to perform a corresponding function in the foregoing method. The transceiver unit is configured to support communication between the second network device and other devices, such as the first network device. The network device can also include a storage unit for coupling with the processing unit that holds program instructions and data necessary for the network device. As an example, the processing unit may be a processor, the transceiver unit may be a transceiver, and the storage unit may be a memory.

In still another aspect, the present application also provides a computer storage medium storing a program that, when executed, includes the steps of part or all of the first network device in the above method.

In still another aspect, the present application also provides a computer storage medium storing a program that, when executed, includes the steps of part or all of the second network device in the above method.

In still another aspect, the present application further provides a power headroom determining system, including the first network device and the second network device of the above aspects. In another possible design, the system may further include other devices in the solution provided by the embodiment of the present invention that interact with the network device.

In yet another aspect, the present application also provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods described in the various aspects above.

In the technical solution provided by the present application, the second network device, such as the base station, may send the indication information indicating the time-frequency resource of the PUCCH to the first network device, such as the UE, so that the UE can calculate the transmission power of the PUCCH according to the indication, and further calculate The PH of the PUCCH, so that the PH of the PUCCH can be calculated more accurately, and the UE can report the PH to the base station, so that the base station performs power control on the UE based on the PH, which helps improve the reliability of data transmission or Efficiency to ensure the normal transmission of data.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background art, the drawings to be used in the embodiments of the present invention or the background art will be described below.

1 is a block diagram of a communication system according to an embodiment of the present invention;

2 is a schematic diagram of interaction of a method for determining a power headroom according to an embodiment of the present invention;

3 is a schematic diagram of interaction of another method for determining a power headroom according to an embodiment of the present invention;

4 is a schematic structural diagram of a network device according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another network device according to an embodiment of the present disclosure;

6 is a schematic structural diagram of a system for determining a power headroom according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of still another network device according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of still another network device according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

It should be understood that the technical solutions of the present application may be specifically applied to various communication systems, for example, Universal Mobile Telecommunication System (UMTS), Long Term Evolution (LTE: Long Term Evolution, abbreviation: LTE). System, etc., with the continuous development of communication technology, the technical solution of the present application can also be used for future networks, such as the fifth generation mobile communication technology (English: The Fifth Generation Mobile Communication Technology, abbreviated: 5G) system, which can also be called new Wireless (English: New Radio, abbreviation: NR) system, or can be used for D2D (device to device) system, M2M (machine to machine) system.

The present application is described in connection with a network device, where the network device may be a base station or a user equipment. For example, the communication involved in the present application may be between a base station and a user equipment, or between a base station and a base station, such as between a macro base station and a small base station, or between a user equipment and a user equipment. , such as communication in a D2D network.

In the present application, the user equipment (English: User Equipment, UE for short) is a terminal device with communication function, which may also be called a terminal, and may include a handheld device with a wireless communication function, an in-vehicle device, and a wearable device. A computing device or other processing device connected to a wireless modem, and the like. User equipment can be called different names in different networks, such as: terminals, mobile stations, subscriber units, stations, cellular phones, personal digital assistants, wireless modems, wireless communication devices, handheld devices, laptops, cordless phones, Wireless local loop station, etc. For convenience of description, the present application is simply referred to as a user equipment UE or a terminal. The user equipment may refer to a wireless terminal or a wired terminal. The wireless terminal can be a device that provides voice and/or data connectivity to the user, a handheld device with wireless connectivity, or other processing device connected to the wireless modem, which can be accessed via a radio access network (eg, RAN, radio access) Network) communicates with one or more core networks. In the present application, a base station, which may also be referred to as a base station device, is a device deployed in a wireless access network to provide wireless communication functions. The name of the base station may be different in different wireless access systems, for example, in a Universal Mobile Telecommunications System (UMTS) network, the base station is called a Node B (NodeB), in the LTE network. The base station is called an evolved Node B (abbreviated as eNB or eNodeB), and may be referred to as a Transmission Reception Point (TRP) network node or a g-Node B (gNB) in a future 5G system.

In the present application, a time unit may refer to a unit corresponding to a time unit. The time unit refers to a time unit or a scheduling unit in the time domain for performing information transmission. The time unit includes an integer number of symbols in the time domain. For example, the time unit may refer to a subframe or a slot. It can also refer to a radio frame, a mini slot or a subslot, multiple aggregated time slots, multiple aggregated sub-frames, symbols, etc., and may also refer to a transmission time interval (English: Transmission Time Interval, abbreviation) :TTI), this application is not limited. Wherein one or more time units of one time unit may include an integer number of time units of another time unit, or one or more time units of one time unit have a length equal to an integer number of another The time unit length of the time unit and, for example, one microslot/slot/subframe/radio frame includes an integer number of symbols, and one slot/subframe/radio frame includes an integer number of minislots, one subframe/ The radio frame includes an integer number of time slots, and one radio frame includes an integer number of sub-frames, and the like. In the present application, the channel may also be called a signal or other names. The transmission signal may also be called a transmission information, a transmission channel, and the like, which is not limited in this application.

The following describes the application scenario of the present application. The application is described by taking the first network device as the UE and the second network device as the base station, that is, the communication between the base station and the UE is taken as an example. Referring to FIG. 1, FIG. 1 is a structural diagram of a communication system according to an embodiment of the present invention. Specifically, as shown in FIG. 1 , the communication system includes a base station and a UE, and the communication between the base station and the UE may be performed by using various communication systems, such as the 5G system in the foregoing wireless communication system, which may also be referred to as an NR system, and Such as the LTE system, etc., thereby achieving information transmission. Specifically, in the information transmission process, the UE may report the PH of the sent signal to the base station, so that the base station can perform scheduling adjustment on the UE according to the reported PH. The value of the PH may be any value, for example, it may be a positive value or a negative value. When the PH is positive, it may indicate that the maximum transmit power of the UE can meet the power required for transmitting the currently scheduled uplink signal; when the PH is negative, it may indicate that the maximum transmit power of the UE cannot meet the transmission. The power required for the upstream signal.

In the present application, the transmission signal may include, but is not limited to, a physical uplink control channel (English: Physical Uplink Control Channel, abbreviated as: PUCCH), a physical uplink shared channel (English: Physical Uplink Shared Channel, abbreviated as: PUSCH), and a reference signal such as Channel sounding reference signal (English: Sounding reference signal, abbreviation: SRS). Optionally, in some communication systems, such as the 5G NR, the PUCCH supports multiple resource multiplexing modes, for example, the PUCCH may be time-divided with other transmission signals, such as PUSCH, or may be frequency-divided with other transmission signals, etc., Make a limit. Further, the PUCCH may be further classified into multiple types. For example, two types of PUCCHs may be supported in the NR, one is a short-length Short-duration PUCCH (short-PUCCH), and the other is a long length. Long-duration PUCCH (Long-PUCCH for short). The length may refer to the length of the PUCCH channel mapping in the time domain, such as the number of symbols occupied by the PUCCH in one subframe. For example, the Short-PUCCH can occupy 1 Orthogonal Frequency Division Multiple Access (OFDM) symbol or 2 OFDM symbols (or other symbol numbers), and the Long-PUCCH can occupy 4 Up to 14 OFDM symbols (or other symbol numbers).

Further optionally, different types of PUCCHs can support different resource multiplexing modes. For example, in one time slot, there may be multiple PUCCHs, which may exist in a time division manner, such as two short-PUCCH time divisions, or one short-PUCCH and one long-PUCCH time division, etc. Not listed one by one. For another example, the short-PUCCH may be time-divided with the PUSCH, the short-PUCCH may be time-divided with the SRS, the long-PUCCH may be allocated to the PUSCH, and the like, which are not enumerated here.

The present application discloses a method for determining a power headroom, a network device and a system, which are helpful for improving the reliability or efficiency of data transmission to ensure normal data transmission. The details are described below separately.

Referring to FIG. 2, FIG. 2 is a schematic diagram of interaction of a method for determining a power headroom according to an embodiment of the present invention. Specifically, as shown in FIG. 2, the method for determining the power headroom in the embodiment of the present invention may include the following steps:

The base station sends the first indication information to the UE, where the first indication information is used to indicate the time-frequency resource of the first PUCCH.

Specifically, the base station may determine indication information for indicating a time-frequency resource (time domain resource and/or a frequency domain resource) of the first PUCCH, that is, the first indication information, and may send the first indication information to the UE. Optionally, the time-frequency resource of the first PUCCH may be explicitly indicated by the first indication information. For example, the first indication information may include time-frequency resources of the first PUCCH, such as occupied bandwidth and number of symbols. And the symbol position and the like; or the time-frequency resource of the first PUCCH may be implicitly indicated by the first indication information, for example, the first indication information may include type information of the first PUCCH, that is, The type information indicates the time-frequency resource of the first PUCCH, and may be a signaling indicating a format of the PUCCH. For example, the first indication information indicates that the first PUCCH is a short-PUCCH, and may represent a time-frequency resource of the first PUCCH. The time-frequency resource corresponding to the PUCCH of the short-PUCCH type; or the time-frequency resource of the first PUCCH may be indicated by the combination of the first indication information explicit indication and the implicit indication, for example, the The indication information may include frequency domain resources and type information of the first PUCCH, and the time domain information of the first PUCCH is indicated by the type information, such as occupied time units such as a symbol number and a symbol position. Optionally, the time-frequency resources occupied by different types of PUCCHs may be different. Further, the first indication information may be the scheduling information, that is, the base station may send the information for indicating the time-frequency resource of the first PUCCH to the UE in the scheduling information of the UE.

202. The UE determines a transmit power of the first PUCCH.

Specifically, after receiving the first indication information sent by the base station, the UE may determine the transmit power of the first PUCCH. Optionally, the UE may determine a time-frequency location of the first PUCCH according to the time-frequency resource indicated by the first indication information, and further determine a sending manner of the first PUCCH and/or a PH corresponding to the first PUCCH. . The PH corresponding to the first PUCCH is the difference between the maximum transmit power of the UE and the transmit power of the first PUCCH.

Optionally, the base station may further send the second indication information to the UE, where the second indication information is used to indicate the sending manner of the first PUCCH, the format of the carried information, the path loss parameter, the nominal power, the power adjustment parameter, and the UE. One or more of the maximum transmit power. Further, if the first indication information does not indicate the frequency domain information of the first PUCCH, the frequency information of the first PUCCH may be further indicated by the second indication information. The transmission mode may include a MIMO transmission format, such as indicating whether the first PUCCH is a diversity transmission; the format of the information of the bearer may include information carried by the PUCCH, such as a channel quality indication (CQI). Or a format of information such as a hybrid automatic repeat request (HARQ) or a scheduling request (abbreviation: SR); the path loss parameter includes a parameter used by the UE to measure a path loss, such as indicating a UE The pilot used to measure the path loss and its parameters, including the Channel State Information Reference Signal (CSI-RS) port number, CSI-RS resource number, and demodulation reference signal (English: Demodulation Reference Signal, Abbreviations: DMRS) Port number, the number of the synchronization block SS Block where the synchronization signal is located, etc., and may also indicate a compensation coefficient for path loss; the power adjustment parameter may include a parameter for dynamically adjusting power, and the following line control information: Transmission power control information in Downlink Control Information, abbreviation: DCI) (English: Transmit power control, abbreviation: TPC) The parameters indicated by the signaling domain may further include parameters for indicating power adjustment of the PUSCH of the UE, such as uplink control information (Uplink control information, Abbreviation: UCI) information content. Further, the second indication information may be one or more pieces of information, that is, the sending mode, the format of the carried information, the path loss parameter, the nominal power, and the power adjustment parameter may be a piece of indication information. The information that is sent to the UE may be sent to the UE by using multiple pieces of indication information, which is not limited in this application. Further optionally, the second indication information may be scheduling information. Therefore, when determining the transmit power of the first PUCCH, the UE can calculate the transmit power of the first PUCCH according to the information indicated by the first indication information and/or the second indication information.

203. The UE determines a first PH, where the first PH is a difference between a maximum transmit power of the UE and a transmit power of the first PUCCH.

Further, the UE may further determine the first PH according to the transmit power of the first PUCCH and the maximum transmit power of the UE, that is, calculate a difference between the maximum transmit power of the UE and the transmit power of the first PUCCH, and the difference is obtained. The value is used as the first PH to indicate an uplink transmission condition of the first PUCCH. Optionally, the maximum transmit power of the UE may be indicated by the second indication information, so that the UE may obtain the maximum transmit power of the UE from the second indication information; or the maximum transmit power may also be the UE's own storage. For example, the base station may semi-statically schedule the maximum transmit power of the UE, and the UE may store the maximum transmit power. The maximum transmit power may also be determined by other methods, which is not limited in this application.

Further optionally, after determining the first PH, the UE may further send the first PH to the base station. Optionally, the UE may transmit the determined first PH to the MAC layer, and report the first PH to the base station by using the MAC layer cell to reduce system overhead; or the UE may further The PH is sent to the base station, which is not limited in this application.

For example, the second indication information may include information for indicating a nominal power, a path loss parameter, and a power adjustment parameter, and the UE may determine the transmit power of the first PUCCH according to the nominal power, the path loss parameter, The power adjustment parameter calculates the transmission power of the first PUCCH. Optionally, the UE may determine the transmit power of the first PUCCH, but the embodiment does not emphasize that the UE should send the first PUCCH, that is, the UE may calculate the PH by calculating only the transmit power of the first PUCCH. There is no need to actually send the first PUCCH. For example, the first PUCCH may be a short-PUCCH, and the calculation formula of the transmit power of the first PUCCH may be as follows:

P _PUCCH =P _{O_PUCCH} +PL _c +g(i)

The P _{O_PUCCH} may represent a nominal power (also referred to as a reference power or a power density reference value), and may represent a PUCCH received power expected by the base station, and may include a cell-level nominal power P _{O_NOMINAL_PUCCH} configured by the higher layer signaling and a user-level nominal. The power P _{O_UE_PUCCH is} two parts; optionally, the base station can also configure the nominal power of the beam level PUCCH. For example, the base station can configure one P _{O_NOMINAL_PUCCH} , multiple P _{O_UE_PUCCH} , each P _{O_UE_PUCCH} and specific to one serving cell c of the UE. The beam resources are corresponding to each other; or the base station may configure one P _{O_NOMINAL_PUCCH} , one P _{O_UE_PUCCH} , and an additional nominal power of the beam level for each beam, for a serving cell c of the UE, and the like, which is not limited in this application. The PL _c may represent a path loss, which may represent a path loss on a serving cell c, or a path loss of a specific beam resource on a serving cell c, which may be related signaling and measurement results of the UE according to a higher layer configuration of the base station. Calculated. The parameter PL _c may be a power adjustment value indicating that the base station performs the scheduled one or more PUCCH resources, such as in the case that the second PUCCH of the first PUCCH and the long-PUCCH of the short-PUCCH is scheduled, the parameter It may be configured for the two PUCCH channels, or configured for the first PUCCH; or, for different beams, the UE may measure different PL _c corresponding to different path loss values. Specifically, the beam resource may include at least one antenna port, and the signal of the antenna port is adjusted by the transmission weight to form a spatial energy aggregation, thereby forming a spatial beam resource. Further, the beam resource may pass the antenna port number and time. The frequency resource location, resource number, precoding weight indication, etc. are indicated. Further, the base station may indicate the transmission power of the downlink resource sent by the UE, such as the downlink reference signal (which may be the resource number of the synchronization signal (such as its time index), or the SS block synchronization block where the synchronization signal is located. Resource (such as its time index), CSI-RS for channel information measurement, DMRS for channel estimation of data channel, PTRS for measuring phase noise), for example, the base station can notify the UE through higher layer signaling . Further, the base station may further indicate resources for path loss measurement corresponding to the uplink resources of the scheduled UE. The uplink resource may be a PUSCH resource number, a DMRS antenna port (group) of the PUSCH, a resource number of the uplink DMRS, an antenna port (group) of the SRS, a resource number of the SRS, and a physical random access channel (Physical Random Access Channel, abbreviation) :PRACH) resource, resource number of PUCCH, DMRS antenna port (group) of PUCCH, and the like. The resource used for path loss measurement may be a downlink resource, such as a resource number of a synchronization signal (such as its time index), or an SS block synchronization block resource (such as its time index) where the synchronization signal is located, and a CSI-RS resource. ID, CSI-RS antenna port, DMRS antenna port, CW (codeword) number, downlink beam ID, ID of pilot for beam management, ID of mobile reference signal, and so on. For example, the base station can configure parameters through the high layer signaling, and the relationship between the downlink reference signal and the uplink sending resource indicated by the parameter can be as follows:

Table I

DL CSI-RS portDL CSI-RS port	UL DMRS port of PUCCHUL DMRS port of PUCCH
C0C0	D0D0
C1C1	D1D1

Further, the UE can obtain the foregoing correspondence by interpreting signaling. For example, the path loss calculated by the downlink reference signal C0 corresponds to the uplink resource of D0; the path loss calculated by the downlink reference signal C1 corresponds to the uplink resource of D1. Thus, the UE can obtain path loss corresponding to different beams (beams correspond to antenna ports (groups)). For another example, the uplink PUCCH has two beam resources, the first beam resource is transmitted on the D0 antenna port, and the second beam resource is transmitted on the D1 antenna port. Therefore, when the corresponding beam resource is scheduled, when the UE calculates the power of the PUCCH and the PH corresponding to the PUCCH, the UE may adopt the path loss measured by the UE corresponding to the beam.

The g(i) may represent a power adjustment value (or compensation value) formed by the closed loop power control of the UE. The parameters used in the calculation process are all physical parameters for the current PUCCH, that is, the first PUCCH.

Further optionally, the first PH in the calculation mode, that is, PH _typex (i) may be:

PH _typex (i)=P _CMAX,c (i)-(P _{O_PUCCH} +PL _c +g(i))

The P _CMAX,c (i) may represent the maximum transmit power of the UE (also referred to as the maximum transmit power), so that the UE can calculate the first PH. Optionally, the granularity of the maximum transmit (transmit) power may be one time unit for one serving cell, such as one subframe of one serving cell of LTE, or one subframe within one serving cell in a 5G scenario, Or a time slot, or a mini-slot, or one or more symbols. Further optionally, the maximum transmit power may refer to a maximum transmit power of all uplink antenna ports or a maximum transmit power of a portion of the uplink antenna ports (groups). The base station may send the maximum transmit power that the base station allows the UE to send, for example, by sending the maximum transmit power through RRC signaling, and informing the base station of the maximum transmit power allowed, the maximum transmit power may also be referred to as P _EMAX or P _EMAX,c . Or it may be called the rest of the name, which is not limited in this application. Further optionally, the maximum transmit power can be applied to P _CMAX,c (i) or

The latter represents the maximum transmit power calculated and configured according to certain power management parameters. It should be understood that the maximum transmit power, such as P _CMAX,c (i), does not exceed the maximum transmit power configured by the base station, or does not exceed the maximum transmit power allowed by the UE capability. The maximum transmit power allowed by the UE may be that the UE configures the maximum transmit power that is actually available to the UE according to factors such as maximum power backoff. For example, when the UE can be configured as cyclic prefix Orthogonal Frequency Division Multiplexing (Cyclic prefix-OFDM, abbreviated as CP-OFDM) or DFT-spread based Orthogonal Frequency Division Multiplexing (DFT spread OFDM, abbreviated: DFT-s-OFDM When the two uplink waveforms are different, because the peak-to-average power ratio (PAPR) of the two waveforms is different, the UE may have different power backoffs for the two waveforms, so the UE can The two waveforms control different max power reduction (abbreviation: MPR). In this case, the base station can configure the maximum transmit power allowed by the two different base stations, or allow the UE to configure the actual maximum transmit power of the two different UEs.

For example, the second indication information may include information for indicating a nominal power, a path loss parameter, and a power adjustment parameter. Further, the second indication information may further include frequency domain information for indicating the first PUCCH, such as The parameter that occupies the uplink bandwidth, or the frequency domain information of the first PUCCH, such as occupying the uplink bandwidth, may be indicated by the first indication information. Therefore, when determining the transmit power of the first PUCCH, the UE may calculate the transmit power of the first PUCCH according to the uplink bandwidth, the nominal power, the path loss parameter, and the power adjustment parameter. For example, the first PUCCH may be a short-PUCCH, and the calculation formula of the transmit power of the first PUCCH may be as follows:

P _PUCCH =10log ₁₀ (M _PUCCH )+P _{O_PUCCH} +PL _c +g(i)

The M _PUCCH may indicate the uplink bandwidth occupied by the first PUCCH, and may also be written as M _PUCCH (i), indicating the bandwidth of the first PUCCH of the i-th subframe, and other formulas may be used later. P _{O_PUCCH} may represent nominal power, PL _c may represent path loss, and g(i) may represent a power adjustment value formed by UE closed loop power control. The parameters used in this calculation are all physical parameters for the first PUCCH. Optionally, the base station may indicate a frequency domain resource, such as a bandwidth, of the PUCCH sent by the UE in the uplink. For example, the base station can directly indicate the frequency domain resource location occupied by the PUCCH, such as the resource block allocation parameter of the frequency domain resource indicating the PUCCH configured in the DCI, which is indicated by the parameter, for example, which parameters are used by the UE to inform the UE of the available RBs. From this, we know what the frequency domain bandwidth is. Alternatively, the base station may be jointly indicated with the time domain location, type, and the like occupied by the PUCCH. For example, different types of PUCCH may correspond to one or more frequency domain resources, so that the base station may indicate the bandwidth by indicating the type of the PUCCH. For a case where multiple PUCCHs are configured in a UE in one subframe, the bandwidth of each PUCCH may be the same or different. The indication may be in the form of a semi-static reserved resource location of the base station or a dynamically scheduled resource location, and is not limited in this application.

PH _typex (i)=P _CMAX,c (i)-(10log ₁₀ (M _PUCCH )+P _{O_PUCCH} +PL _c +g(i))

In this manner, the UE can calculate the PH of the total power of the PUCCH in the frequency domain without considering the information and the transmission mode carried in the PUCCH, thereby calculating the first PH.

For example, the second indication information may include information for indicating a nominal power, a path loss parameter, and a power adjustment parameter. Further, the second indication information may further include a format for indicating information of the first PUCCH bearer, Information about the method of sending. Therefore, when determining the transmit power of the first PUCCH, the UE may calculate the transmit power of the first PUCCH according to the format of the bearer information, the parameters of the transmit mode, the nominal power, the path loss parameter, and the power adjustment parameter. For example, the first PUCCH may be a short-PUCCH, and the calculation formula of the transmit power of the first PUCCH may be as follows:

P _PUCCH =P _{O_PUCCH} +PL _c +h(n _CQI ,n _HARQ ,n _SR )+Δ _{F_PUCCH} (F)+Δ _TxD (F')+g(i)

Where P _{O_PUCCH} can represent the nominal power. PL _c can represent path loss. h(n _CQI , n _HARQ , n _SR ) may represent an adjustment amount of a format (PUCCH format) of the information carried by the PUCCH, which reflects the influence of the content of the signaling transmitted in the PUCCH, such as may be based on the bearer in the PUCCH The CQI, HARQ, and SR information type parameters are calculated, that is, the values of h(n _CQI , n _HARQ , n _SR ) may be related to the number of bits of CQI, HARQ, and SR transmitted in the PUCCH; further, According to different PUCCH formats, different n _CQIs , n _HARQs , and n _SRs may be corresponding, and the UE may calculate the parameters according to the UCI information to be reported. Δ _{F_PUCCH} (F) may represent a power offset related to the format of information carried by the PUCCH, such as an offset of the PUCCH format configured by the base station through a higher layer, and the parameter may be provided by a higher layer, for example, the value of the parameter may be Represents the power offset of PUCCH format F relative to PUCCH format 1a, where format F may be format 1, 1b, 2, 2a, 2b, 3, 4, 5 or 1b with channel selection. Δ _TxD (F') may represent a power offset corresponding to a PUCCH transmission mode, which may be configured by a base station through a higher layer, such as a power offset associated with a second PUCCH format F when the UE transmits a PUCCH by using a transmit diversity technique, For example, if the UE is configured to transmit PUCCH on two antenna ports, the value of _ΔTxD (F') may be provided by a higher layer, otherwise the value of the parameter may be 0, where format F' may be format 1, 1a/1b, 1b with channel selection, 2/2a/2b or 3. g(i) may represent a power adjustment value formed by the closed loop power control of the UE, for example, it may be an adjustment amount on the current subframe i, and the base station may indicate to the UE through dynamic DCI signaling, so that the UE receiving base station transmits the parameter. The parameters used in this calculation are all physical parameters for the first PUCCH.

PH _typex (i)=P _CMAX,c (i)-(P _{O_PUCCH} +PL _c +h(n _CQI ,n _HARQ ,n _SR )+Δ _{F_PUCCH} (F)+Δ _TxD (F')+g(i) )

In this manner, the UE may calculate the first PH that transmits the first PUCCH in the case of determining information such as information content and transmission mode (such as whether it is diversity transmission) carried by the PUCCH.

P _PUCCH =10log ₁₀ (M _PUCCH )+P _{O_PUCCH} +PL _c +h(n _CQI ,n _HARQ ,n _SR )+Δ _{F_PUCCH} (F)+Δ _TxD (F')+g(i)

The M _PUCCH may indicate an uplink bandwidth occupied by the first PUCCH; the P _{O_PUCCH} may represent a nominal power; the PL _c may represent a path loss; and h (n _CQI , n _HARQ , n _SR ) may represent information carried by the first PUCCH. The power offset obtained by the format may be a power offset calculated according to an information format such as CQI, HARQ, SR, etc. carried in the first PUCCH; Δ _{F_PUCCH} (F) may indicate that the first PUCCH format is related to The power offset; _ΔTxD (F') may indicate the manner of transmission of the first PUCCH, such as determining the value of the parameter according to whether the PUCCH is a transmit diversity mode; g(i) may represent a closed loop power control formed by the UE Power adjustment value. The parameters used in this calculation are all physical parameters for the first PUCCH.

PH _typex (i)=P _CMAX,c (i)-(10log ₁₀ (M _PUCCH )+P _{O_PUCCH} +PL _c +h(n _CQI ,n _HARQ ,n _SR )+Δ _{F_PUCCH} (F)+Δ _TxD (F ')+g(i))

In this manner, the UE may calculate the first PH that transmits the first PUCCH in the case of determining information such as the PUCCH bandwidth, the information content of the bearer, and the transmission mode (eg, whether it is a diversity transmission). In particular, if the first PUCCH may occupy more than one RB, the transmit power of the first PUCCH is calculated by using the real bandwidth, thereby obtaining the first PH corresponding to the transmit power required to transmit the first PUCCH.

Optionally, the first PUCCH may be a PUCCH of a specific type, for example, the time domain resource occupied by the first PUCCH is an X value, such as an X value of 1 OFDM symbol, 2 OFDM symbols; or, the first PUCCH Occupied time domain resources such as OFDM symbols are less than the value of X, which may be 3 or other values. For example, the first PUCCH may be the short-PUCCH described above, and the first PH is the balance of power to maximum power under the type.

In the above-described first PUCCH transmission power calculation method or the first PH centralized calculation method, a calculation method including M _PUCCH or no M _PUCCH may be applied. In the calculation mode including the M _PUCCH , the M _PUCCH may represent a size of a frequency domain resource occupied by the first PUCCH, and the frequency domain resource may be indicated by a quantity of a resource block (abbreviation: RB), that is, the frequency The domain resource may be in units of RBs, or may be in other granularities. This application is not limited. For example, the M _PUCCH can represent how many RBs are occupied. In the calculation mode without M _PUCCH , it can be interpreted as the formula. Only the power density of the first PUCCH is included in the calculation of the PH, so that after receiving the PH, the base station can use the PH value to calculate the size of the bandwidth that can allocate the first PUCCH. For example, a possible base station processing method is: if the PH reported by the UE is 3 dB, the base station can allocate 3 dB of frequency domain resources. Alternatively, in the calculation mode without the M _PUCCH , the formula may be interpreted as: the PH calculated at this time is the size of the frequency domain resource allocated to the PUCCH, for example, 1 RB, and the bandwidth corresponding to 0 dB at this time Resources. In the calculation method with M _PUCCH and no M _PUCCH , the formula can be interpreted as the maximum power and the difference between the power of the first PUCCH and the power density, that is, the maximum transmit power of the UE and the transmit power of the first PUCCH. difference.

Further optionally, the first PUCCH may also be time-division multiplexed with the PUSCH, the second PUCCH, the SRS, and the like, and the UE may further calculate the PH of the remaining transmitted signals. The type of the second PUCCH may be the same as or different from the type of the first PUCCH. Thus at least two PHs can be calculated in one time unit of a serving cell, such as a subframe.

Optionally, the time unit in which the first PUCCH is located may also have a PUSCH, and the first PUCCH and the PUSCH may be time division multiplexed. The UE may also determine a second PH, which is a difference between the maximum transmit power of the UE and the transmit power of the PUSCH. For example, the formula for the PH under the PUSCH, PH type _{1, c} (i) (second PH), can be as follows:

PH _type1,c (i)=P _CMAX,c (i)-{10log ₁₀ (M _PUSCH,c (i))+P _{O_PUSCH,c} (j)+α _c (j)·PL _c +Δ _TF,c (i)+f _c (i)}

Wherein, {10log ₁₀ (M _PUSCH,c (i))+P _{O_PUSCH,c} (j)+α _c (j)·PL _c +Δ _TF,c (i)+f _c (i)} may represent the PUSCH Transmit power. P _CMAX,c (i) can represent the maximum transmit power of the UE. M _PUSCH,c (i) may represent the transmission bandwidth of the PUSCH, which may indicate the bandwidth in terms of the number of resource blocks (abbreviations: RBs), that is, the bandwidth may be in units of RBs, or the bandwidth may be other granularity. For the unit, the application is not limited; for example, the base station may indicate the bandwidth of the PUSCH sent by the UE in the uplink, and the resource block allocation parameter of the frequency domain resource indicating the PUSCH configured in the DCI is indicated by the parameter, for example, This parameter tells the UE which RBs are available, and thus knows what the frequency domain bandwidth is. When uplinking multiple PUSCHs, the base station may uniformly or separately indicate frequency domain resource allocation of multiple PUSCHs, so that the UE may know the respective bandwidths of multiple PUSCHs, and the multiple PUSCHs may form one or more spatial beam resources; Further optionally, the bandwidth value may be a bandwidth size of a specific beam resource configured by the base station to the UE. P _{O_PUSCH,c} (j) may represent the nominal power of the PUSCH, and may indicate the PUSCH received power expected by the base station, including the cell nominal power of the PUSCH (P _{O_NOMINAL_PUSCH, c} (j)) and the terminal-specific nominal power of the PUSCH (P). _{O_UE_PUSCH,c} (j)), these parameters are sent by the base station to the UE, where j can be 0, 1 or 2, for example, j=0 in semi-persistent scheduling, j=1 in dynamic scheduling, random access When j=2; further, the (P _{O_NOMINAL_PUSCH,c} (j)) refers to the nominal power of the PUSCH at the cell level, and the (P _{O_UE_PUSCH,c} (j)) refers to the nominal power of the PUSCH at the user level. And P _{O_NOMINAL_PUSCH,c} (j)) and (P _{O_UE_PUSCH,c} (j)) may also be applied to the nominal power of a particular PUSCH beam resource. For example, the base station may configure one P _{O_NOMINAL_PUSCH, c} (j), multiple P _{O_UE_PUSCH, c} (j), and each P _{O_UE_PUSCH, c} (j) corresponding to a specific beam resource to one serving cell c of the UE; or The base station may configure one P _{O_NOMINAL_PUSCH, c} (j), one P _{O_UE_PUSCH, c} (j), and an additional nominal power of the beam level for each beam, for a serving cell c of the UE, etc., which is not limited in this application. The α _c (j) may represent a path loss adjustment factor (or a compensation factor), that is, an adjustment parameter for the path loss compensation, and the base station may send an adjustment parameter of the path loss compensation to the UE, so that the UE may be according to different scheduling types (such as Corresponding parameters are selected by j indicating dynamic scheduling, semi-static scheduling, and the like. PL _c may represent path loss; Δ _TF,c (i) may represent a power offset value related to the modulation coding mode or the content of the signal, which embodies the modulation coding mode or the influence of the content of the signal on the power, the content of the signal It may refer to control information transmitted in the PUSCH. For example, when a Channel Quality Indicator (CQI) is transmitted in the PUSCH, the value of the power offset value may be increased to transmit the PUSCH by using a larger power. Optionally, the base station can control whether the Δ _{TF, c} (i) value is valid, for example, the base station can configure deltaMCS-Enabled through high-level signaling, and when the base station configures the enable signaling to be disabled, corresponding to Δ _{TF And c} (i) is 0. Otherwise, the UE may determine whether the value is valid according to an information format carried in the PUSCH, such as a CQI, a Precoding Matrix Indicator (PMI), or the like. f _c (i) may represent a power adjustment value formed by the closed loop power control of the UE, which is a parameter of dynamic power control; optionally, the parameter may be configured for one time unit such as a subframe, and the base station may pass in the DCI Notifying the UE of the dynamically adjusted power offset, such as instructing the UE to adjust the transmit power to -1/0/+1/+3dB in the corresponding subframe, and the parameter may also be configured for a specific uplink beam resource; further When the dynamic adjustment is applied to a specific beam resource, the UE should calculate the corresponding beam resource when calculating the transmission power or PH of the specific beam resource. Optionally, the foregoing parameters may be indicated by the base station to the UE. For example, the base station may carry each parameter in one or more pieces of scheduling information to notify the UE. Among the parameters in the formula, c and i may mean that the parameter is a parameter for the serving cell c, a time unit such as subframe i, and the parameters used in the calculation process are physical parameters for the PUSCH.

Optionally, the time unit in which the first PUCCH is located may also have a second PUCCH, where the first PUCCH and the second PUCCH may be time division multiplexed. The UE may also determine a third PH, which may be a difference between a maximum transmit power of the UE and a transmit power of the second PUCCH. The type of the second PUCCH may be the same as the type of the first PUCCH, for example, all of the short PUCCH, and the PH of the second PUCCH, that is, the calculation manner of the third PH, and the calculation of the first PH The method is the same; or the type of the second PUCCH may be different from the type of the first PUCCH, for example, the first PUCCH is a short-PUCCH, and the second PUCCH is a long-PUCCH, and the third PH may be calculated in a manner The first PH is calculated differently.

Further, optionally, a time unit of a serving cell, such as a subframe, may schedule multiple PUCCHs, the types of the multiple PUCCHs may be the same, and the multiple PUCCHs may carry the same or different information content. For example, for one subframe of a serving cell, the UE may need to calculate multiple first PHs according to the scheduled uplink signal, for example, the base station may schedule the UE to send multiple short-PUCCHs in one subframe, and assume that it needs to be sent. Two short-PUCCHs, each of which occupies only one time domain resource unit, such as one OFDM symbol respectively. Optionally, the information content of the two short-PUCCHs may be different, and the first PHs corresponding to the two short-PUCCHs are different; the information content of the two short-PUCCHs is also The same may be used, and the first PHs corresponding to the two short-PUCCHs may be the same.

Further optionally, in a time unit of a serving cell, such as a subframe, the UE may also be scheduled with PUCCHs of multiple PUCCH types. For example, the UE is scheduled to send a short-PUCCH and a long-PUCCH in one subframe, and the information content carried by the two PUCCHs may be different or the same, for example, in order to improve the reliability of the transmission, the same may be repeated. The information is transmitted in two PUCCHs. Alternatively, in order to increase the capacity of the UE feedback channel, the feedback information may be split and transmitted in two PUCCHs. Thus, within one subframe, the UE calculates different PH values for the two types of PUCCH. Optionally, the intra-subframe UE may not be limited to send one short-PUCCH and one long-PUCCH, and the base station may also schedule the UE to transmit multiple short-PUCCHs and/or multiple long-PUCCHs, which is not limited in this application.

Further, the PH calculated by the present application may refer to a power headroom at a time-frequency resource location of the corresponding signal, for example, the first PH corresponds to an OFDM symbol occupied by the short-PUCCH (for example, one occupied) Power margin on or 2 OFDM symbols).

Optionally, the time unit in which the first PUCCH is located may further have a second PUCCH and a PUSCH, where the first PUCCH and the second PUCCH may be time division multiplexed, and the second PUCCH and the PUSCH may be frequency division multiplexing. That is, the second PUCCH may be transmitted simultaneously with the PUSCH. Then, the UE may determine a fourth PH, where the fourth PH may be a difference between the maximum transmit power and a sum of the second PUCCH and the transmit power of the PUSCH, that is, a power headroom for simultaneous transmission of the PUSCH and the second PUCCH. For example, the calculation formula of the PH under the PUSCH and the second PUCCH, that is, PH _{type 2, c} (i) (fourth PH) can be as follows:

The P _{O_PUCCH} may represent a nominal power to the second PUCCH, and may indicate a PUCCH received power expected by the base station, including a cell-level nominal power (P _{O_NOMINAL_PUCCH} ) for the second PUCCH and a user-level nominal power for the second PUCCH. (P _{O_UE_PUCCH} ); Optionally, the base station can also configure the nominal power of the beam-level PUCCH, which is not described here. h(n _CQI , n _HARQ , n _SR ) may represent a format of information carried by the second PUCCH, such as an information format according to CQI, HARQ, SR, etc. carried in the second PUCCH. Δ _{F_PUCCH} (F) may represent a power offset related to the format of the information carried by the second PUCCH, which may be provided by a higher layer, such as the value of the parameter may represent the power offset of the PUCCH format F relative to the PUCCH format 1a Where format F can be format 1, 1b, 2, 2a, 2b, 3, 4, 5 or 1b with channel selection. Δ _TxD (F') may represent the power offset associated with the format F' when the UE transmits the second PUCCH using the transmit diversity technique. g(i) represents the power adjustment value formed by the closed loop power control of the UE. In addition, the parameters for calculating the power of the PUSCH in the formula may be referred to the foregoing description, and are not described herein. Optionally, the foregoing parameters may be indicated by the base station to the UE. For example, the base station may carry each parameter in one or more pieces of scheduling information to notify the UE. Wherein, c and i in each parameter in the formula may refer to a parameter that the parameter is for a serving cell c, a time unit such as subframe i. The calculated PH is equal to the maximum transmit power, and the result of subtracting the sum of the powers of the transmitted PUSCH and the PUCCH is calculated by first calculating the dB values of the two parts of the PUSCH and the second PUCCH, and then adding their linear values. And then converted to dB value. Further, the PH calculation method when the PUSCH and the second PUCCH are simultaneously transmitted may be determined by other methods, which are not enumerated here.

Optionally, the time unit of the first PUCCH may further have a reference signal, and the first PUCCH and the reference signal may be time division multiplexed. The UE may also determine a fifth PH, which may be a difference between the maximum transmit power and the transmit power of the reference signal. For example, if the reference signal can be SRS, the formula for the PH under the SRS, that is, PH _{type 3, c} (i) (fifth PH) can be as follows:

PH _type3,c (i)=P _CMAX,c (i)-{10log ₁₀ (M _SRS,c )+P _{O_SRS,c} (m)+α _SRS,c ·PL _c +f _SRS,c (i)}

Where P _CMAX,c (i) may represent the maximum transmit power of the UE, for example, the P _CMAX,c (i) may be assumed to transmit SRS in subframe i and assume MPR=0 dB, A-MPR=0 dB, P- Calculated when MPR=0dB and TC=0dB. M _SRS,c may represent the transmission bandwidth of the SRS, which may be in units of RBs. Further, the parameter may be sent by the base station to the UE. P _{O_SRS,c} (m) may represent the nominal power of the SRS, including the cell nominal power of the SRS (P _{O_NOMINAL_SRS, c} (m)) and the UE-specific nominal power of the SRS (P _{O_UE_SRS,c} (m)), where , m=0 or 1. α _SRS,c can represent the path loss adjustment factor (or compensation factor) of the SRS. PL _c can represent path loss. f _SRS,c (i) may represent the power adjustment value of the SRS formed by the closed loop power control of the UE, that is, the closed loop power adjustment value of the SRS. Optionally, the foregoing parameters may be indicated by the base station to the UE. For example, the base station may carry each parameter in one or more pieces of scheduling information to notify the UE. Among the parameters in the formula, c and i may refer to parameters of the parameter for the serving cell c, the time unit such as the subframe i. Wherein, the calculated PH is equal to the maximum transmit power, minus the result of transmitting the power of the SRS.

Further, the UE may further send the calculated PH to the base station, for example, the UE may send all the calculated PHs to the base station, or the UE may select one PH from the calculated PHs and send the PH to the base station to perform PH. Reported, this application is not limited.

For example, the UE can report a worst (smallest) PH so that the base station can determine the type of resource that should not be allocated the most. If the reported PH(i) can be determined by:

PH(i)=P _CMAX -max{P _PUCCH ,...,P _PUSCH ,P _SRS }

or,

PH(i)=min{PH _typex (i),...,PH _type3 (i),PH _type2 (i),PH _type1 (i)}

As another example, the UE can report a best (maximum) PH so that the base station can determine the type of resource that should not be allocated the most. If the reported PH(i) can be determined by:

PH(i)=P _CMAX -min{P _PUCCH ,...,P _PUSCH ,P _SRS }

or,

PH(i)=max{PH _typex (i),...,PH _type3 (i),PH _type2 (i),PH _type1 (i)}

The {P _PUCCH , . . . , P _PUSCH , P _SRS } may represent the calculated transmission power of each transmission signal, the {PH _typex (i), . . . , PH _{type 3} (i), PH _{type 2} ( i), PH _type1 (i)} can represent the PH under each transmitted signal. For example, the P _PUSCH may refer to a power required to transmit a PUSCH part (only transmitting a PUSCH, or simultaneously transmitting a PUSCH and a second PUCCH), which may be determined by a formula in Type1 and Type2 described above, and the P _SRS may refer to transmission. The power required by the SRS part.

After receiving the PH reported by the UE, the base station can adjust the scheduling of the UE according to the PH. For example, if the UE reports the first PH and the PH value is a negative value, the bandwidth resource scheduled for the UE may be reduced to reduce the transmission power, or the first PUCCH type signal may not be sent to avoid sending a signal. The power limitation causes the problem of unreliable data transmission.

In this embodiment, the base station may send the indication information to the UE to indicate the time-frequency resource of the PUCCH, so that the UE can calculate the transmission power of the PUCCH according to the indication, and further calculate the PH under the PUCCH. In this embodiment, the UE can pass the UE. Combining the PUCCH type, the PH of the PUCCH can be calculated more accurately, and the PH calculation of each transmitted signal in the time division manner can be implemented, so that the base station can dynamically schedule different types of PUCCH or other transmission signals, which helps to improve data transmission. Reliability or efficiency to ensure the normal transmission of data.

Referring to FIG. 3, FIG. 3 is a schematic flowchart diagram of another method for determining a power headroom according to an embodiment of the present invention. Specifically, as shown in FIG. 3, the method for determining the power headroom of the embodiment may include the following steps:

301. The base station sends, to the UE, indication information, where the indication information indicates a bandwidth occupied by each signal in the transmission signal.

Specifically, the base station may determine the indication information and send the indication information to the UE. The indication information may be used to indicate a sending signal of the UE in a time unit, and the sending signal may include one or more of a first PUCCH, a PUSCH, a second PUCCH, and a reference signal, and the indication information may indicate each signal. Frequency domain resources such as bandwidth occupied separately.

302. The UE determines the PH according to the bandwidth occupied by each signal.

303. The UE sends the PH to the base station.

Specifically, the UE may receive the indication information from the base station, and further calculate a difference between the maximum transmit power of the UE and the transmit power of the transmit signal according to the bandwidth occupied by each signal included in the indication information, that is, calculate the time unit. Such as a uniform PH in a subframe or time slot.

Optionally, when the UE determines the PH according to the bandwidth occupied by each signal, the UE may specifically: when the sending signal does not include any one of the first PUCCH, the PUSCH, the second PUCCH, and the reference signal, the UE may The bandwidth occupied by any signal is determined to be 0 (that is, the virtual bandwidth); the UE determines the transmission power of each signal according to the bandwidth occupied by each signal included in the transmission signal and the bandwidth occupied by the signals not included, so that the UE can The difference between the maximum transmission power of the UE and the transmission power of each signal is determined as the PH. That is to say, the UE can determine the calculated bandwidth value of the PUSCH and the PUCCH used when calculating the PH according to the channel multiplexing manner of each signal (such as whether it is frequency division multiplexing), for example, frequency division multiplexing is used. The actual transmission bandwidth of the multiplexed signal is used to calculate the PH, and the remaining signals are calculated using a virtual bandwidth such as 0.

For example, when a time unit such as a PUSCH and/or a PUCCH exists in a subframe, the unified PH can be determined by:

The M _PUSCH,c (i) may represent a transmission bandwidth of the PUSCH, and the M _PUCCH,c (i) may represent a transmission bandwidth of the PUCCH. The

Can represent the power density of the PUSCH,

The power density of the PUCCH can be expressed. For the description of the parameters of the formula, reference may be made to the related description of the embodiment shown in FIG. 2, and details are not described herein. Optionally, the power density of the PUSCH and the power density of the PUCCH may also be determined by other formulas, which are not enumerated here. Among the parameters in the formula, c and i may refer to parameters of the parameter for the serving cell c, the time unit such as the subframe i.

Specifically, when a time unit transmits only the short-PUCCH symbol in a subframe, the M _PUSCH,c (i)=0, that is, the virtual bandwidth is used instead of the real bandwidth value scheduled for the PUSCH. . When short-PUCCH and PUSCH are simultaneously transmitted in a _{subframe, parameters} such as M _PUSCH,c (i), P _{O_PUSCH, c} (j), Δ _{TF, c} (i), and f _c (i) are respectively transmitted by the PUSCH. The parameters, M _{PUCCH, c} (i), P _{O_PUCCH} , h (n _CQI , n _HARQ , n _SR ), Δ _TxD (F'), g(i) are parameters for transmitting short-PUCCH, respectively; similarly, when When the long-PUCCH and the PUSCH are simultaneously transmitted in the frame, the parameters such as the M _{PUSCH, c} (i), P _{O_PUSCH, c} (j), Δ _{TF, c} (i), and f _c (i) are parameters for transmitting the PUSCH, respectively. M _PUCCH,c (i), _{PO_PUCCH} , h(n _CQI , n _HARQ , n _SR ), Δ _TxD (F'), g(i) are parameters for transmitting long-PUCCH, respectively. When only the PUSCH is transmitted in the subframe, and the PUCCH (which may be of any type, such as short-PUCCH or long-PUCCH) is not transmitted at the same time, the M _PUCCH,c (i)=0, that is, the virtual bandwidth is used for calculation, and Not the scheduled bandwidth value of the real PUCCH.

For another example, when a time unit such as a PUSCH and/or a PUCCH and/or an SRS exists in a subframe, the unified PH can be determined by:

The power density of the PUSCH, the power density of the PUCCH, and the power density of the SRS may be determined by the calculation manner of the transmit power of the corresponding signal in the embodiment shown in FIG. 2, and details are not described herein. Optionally, the bandwidth value of each signal may be adjusted according to information such as channel multiplexing mode and signal type, that is, the bandwidth value used for calculation may be different from the actual transmission bandwidth of the transmission signal of the subframe. For example, in order to calculate the power headroom of the symbol of the value transmission SRS, the PH can be calculated by setting the calculation bandwidth of the PUSCH and the PUCCH to zero.

Further optionally, after determining the unified PH, the UE may also send the PH to the base station. Optionally, the UE may transmit the determined PH to the MAC layer, and report the PH to the base station by using the MAC layer cell to reduce the system overhead. Alternatively, the UE may send the PH to the base station by using other methods. The application is not limited.

In this embodiment, the UE can perform PH calculation of multiple resource types by adopting a unified manner and by using the actually scheduled channel bandwidth or virtual bandwidth, thereby implementing PH and different channels under various types of PUCCH. The PH of various transmission signals in the multiplexing mode, thereby improving the reliability or efficiency of data transmission and ensuring the normal transmission of data.

The foregoing method embodiments are all examples of the method for determining the power headroom of the present application. The descriptions of the various embodiments are different, and the details that are not detailed in an embodiment may be referred to the related descriptions of other embodiments.

Embodiments of the present invention further provide an apparatus embodiment for implementing the steps and methods in the foregoing method embodiments. The method, the steps, the technical details, the technical effects and the like of the foregoing method embodiments are also applicable to the device embodiments, and will not be described in detail later.

Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a network device according to an embodiment of the present invention. Specifically, as shown in FIG. 4, the network device 400 of the embodiment of the present invention may include a transceiver unit 401 and a processing unit 402.

The transceiver unit 401 is configured to receive first indication information from another network device, where the first indication information is used to indicate a time-frequency resource of the first PUCCH;

The processing unit 402 is configured to determine a transmit power of the first PUCCH;

The processing unit 402 is further configured to determine a first PH, where the first PH is a difference between a maximum transmit power of the first network device and a transmit power of the first PUCCH.

Optionally, the time unit in which the first PUCCH is located also has a PUSCH, where the first PUCCH and the PUSCH are time division multiplexed;

Further, the processing unit 402 is further configured to determine a second PH, where the second PH is a difference between the maximum transmit power and the transmit power of the PUSCH.

Optionally, the time unit in which the first PUCCH is located also has a second PUCCH, where the first PUCCH and the second PUCCH are time division multiplexed;

Further, the processing unit 402 is further configured to determine a third PH, where the third PH is a difference between the maximum transmit power and the transmit power of the second PUCCH.

Optionally, the time unit in which the first PUCCH is located further includes a second PUCCH and a PUSCH, where the first PUCCH and the second PUCCH are time division multiplexed, and the second PUCCH and the PUSCH are frequency divisions. Reusable

The processing unit 402 is further configured to determine a fourth PH, where the fourth PH is a difference between the maximum transmit power and a sum of the transmit powers of the second PUCCH and the PUSCH.

Optionally, the time unit in which the first PUCCH is located also has a reference signal, where the first PUCCH and the reference signal are time division multiplexed;

The processing unit 402 is further configured to determine a fifth PH, where the fifth PH is a difference between the maximum transmit power and a transmit power of the reference signal.

Optionally, the transceiver unit 401 is further configured to receive second indication information from the another network device, where the second indication information is used to indicate a sending manner of the first PUCCH, and information about the bearer. At least one of a format, a path loss parameter, a nominal power, and a power adjustment parameter.

Further, the processing unit 402 is further configured to determine, according to the first indication information and/or the second indication information, a transmit power of the first PUCCH.

Optionally, the network device may implement some or all of the steps performed by the first network device, such as the UE, in the determining method of the power headroom in the foregoing embodiment shown in FIG. 2 to FIG. 3 by using the foregoing unit, where the other network device may be Refer to the related description of the second network device, such as the base station, in the embodiment shown in FIG. 2 to FIG. 3 above. It should be understood that the embodiments of the present invention are device embodiments corresponding to the method embodiments, and the description of the method embodiments is also applicable to the embodiments of the present invention.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of another network device according to an embodiment of the present invention. Specifically, as shown in FIG. 5, the network device 500 of the embodiment of the present invention may include a processing unit 501 and a transceiver unit 502.

The processing unit 501 is configured to determine first indication information, where the first indication information is used to indicate a time-frequency resource of the PUCCH;

The transceiver unit 502 is configured to send the first indication information to another network device.

Optionally, the transceiver unit 502 is further configured to send the second indication information to the another network device. The second indication information may be used to indicate at least one of a sending manner of the PUCCH, a format of information to be carried, a path loss parameter, a nominal power, and a power adjustment parameter.

Optionally, the network device may implement some or all of the steps performed by the second network device, such as the base station, in the determining method of the power headroom in the foregoing embodiment shown in FIG. 2 to FIG. 3 by using the foregoing unit, where the other network device may be Refer to the related description of the first network device, such as the UE, in the embodiment shown in FIG. 2 to FIG. 3 above. It should be understood that the embodiments of the present invention are device embodiments corresponding to the method embodiments, and the description of the method embodiments is also applicable to the embodiments of the present invention.

Referring to FIG. 6, FIG. 6 is a schematic structural diagram of a system for determining a power headroom according to an embodiment of the present invention. Specifically, as shown in FIG. 6, the system of the embodiment of the present invention may include a first network device 601 and a second network device 602.

The second network device 602 is configured to determine the first indication information, and send the first indication information to the first network device 601, where the first indication information is used to indicate a time-frequency resource of the first PUCCH;

The first network device 601 is configured to receive the first indication information from the second network device 602, determine a transmit power of the first PUCCH, and determine a first PH. The first PH may be the first The difference between the maximum transmit power of the network device 601 and the transmit power of the first PUCCH.

Optionally, the first network device 601 is further configured to send the first PH to the second network device 602.

Further, the transmit power of the first PUCCH may be the power used to transmit the first PUCCH, or may be the power density used to indicate the power of the first PUCCH (ie, the bandwidth occupied by the first PUCCH is regarded as 1 hour power).

Optionally, the first network device may be a UE or a base station. Correspondingly, the second network device may be a base station or a UE. Specifically, the first network device may refer to the related description of the UE in the foregoing embodiment shown in FIG. 2 to FIG. 3, and the second network device may refer to the related description of the base station in the foregoing embodiment shown in FIG. 2 to FIG. , not to repeat here.

Referring to FIG. 7, FIG. 7 is a schematic structural diagram of another network device according to an embodiment of the present invention. As shown in FIG. 7, the network device 700 can include a transceiver 702 and a processor 701, the processor 701 being coupled to the transceiver 702. The processor may correspond to the processing unit in the embodiment shown in FIG. 4, that is, the processing unit may be a processor, and the transceiver may correspond to the transceiver unit in the embodiment shown in FIG. 4, that is, the transceiver unit may Is the transceiver. Optionally, the network device may further include a memory 703, configured to store program codes and data of the network device.

The transceiver 702, the memory 703, and the processor 701 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

The processor 701 may be a central processing unit (English: Central Processing Unit, abbreviated as CPU), a network processor (English: Network Processor, abbreviated as NP), or a combination of a CPU and an NP.

The processor 701 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (English: Application-Specific Integrated Circuit, ASIC), a programmable logic device (English: Programmable Logic Device, abbreviation: PLD) or a combination thereof. The above PLD can be a complex programmable logic device (English: Complex Programmable Logic Device, abbreviation: CPLD), Field-Programmable Gate Array (English: Field-Programmable Gate Array, abbreviation: FPGA), general array logic (English: Generic Array Logic, abbreviation: GAL) or any combination thereof.

The memory 703 may include a volatile memory (English: Volatile Memory), such as a random access memory (English: Random-Access Memory, abbreviation: RAM); the memory may also include a non-volatile memory (English: non-volatile) Memory), such as flash memory (English: flash memory), hard disk (English: Hard Disk Drive, abbreviated: HDD) or solid state hard disk (English: Solid-State Drive, abbreviated: SSD); the memory 703 may also include the above types A combination of memories.

The steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions. The software instructions may be comprised of corresponding software modules that may be stored in the aforementioned memory or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a network device. Of course, the processor and the storage medium can also exist as discrete components in the network device.

In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in a processor or an instruction in a form of software. The steps of the method disclosed in the embodiments of the present application may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the memory, and the processor reads the information in the memory and combines the hardware to complete the steps of the above method. To avoid repetition, it will not be described in detail here.

The network device may be a UE or a base station. Optionally, the memory 703 can be used to store program instructions, and the processor 701 calls the program instructions stored in the memory 703 to perform one or more steps in the embodiment shown in FIG. 2 to FIG. 3, or alternatively The implementation manner enables the network device to implement the functions in the above method. For example, the network device may implement some or all of the steps performed by the first network device, such as the UE, in the foregoing embodiments of FIG. 2 to FIG. 3 through the foregoing device.

Referring to FIG. 8, FIG. 8 is a schematic structural diagram of another network device according to an embodiment of the present invention. As shown in FIG. 8, the network device 800 can include a transceiver 802 and a processor 801 that is coupled to the transceiver 802. The processor may correspond to the processing unit in the embodiment shown in FIG. 5, that is, the processing unit may be a processor, and the transceiver may correspond to the transceiver unit in the embodiment shown in FIG. 5, that is, the transceiver unit may Is the transceiver. Optionally, the network device may further include a memory 803, configured to store program codes and data of the network device. The transceiver 802, the memory 803, and the processor 801 may be connected to each other through a bus, or may be connected by other means. In the present embodiment, a bus connection will be described. The bus can be divided into an address bus, a data bus, a control bus, and the like.

The processor 801 can be a CPU, an NP, or a combination of a CPU and an NP.

The processor 801 may further include a hardware chip. The above hardware chip may be an ASIC, a PLD, or a combination thereof. The above PLD can be CPLD, FPGA, GAL.

The memory 803 may include volatile memory, such as RAM; the memory may also include non-volatile memory, such as flash memory, HDD or SSD; the memory 803 may also include a combination of the types of memory described above.

The steps of the method or algorithm described in connection with the disclosure of the present application may be implemented in a hardware manner or in a manner in which the processor executes software instructions. The software instructions may be comprised of corresponding software modules that may be stored in the aforementioned memory or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium. Of course, the storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in a network device. Of course, the processor and the storage medium can also exist as discrete components in the network device.

The network device may be a base station or a UE. Optionally, the memory 803 can be used to store program instructions, and the processor 801 calls the program instructions stored in the memory 803 to perform one or more steps in the embodiment shown in FIG. 2 to FIG. 3, or alternatively The implementation manner enables the network device to implement the functions in the above method. For example, the network device may implement some or all of the steps performed by the second network device, such as the base station, in the foregoing embodiments of FIG. 2 to FIG. 3 through the foregoing device.

It is to be understood that the first, second, third, fourth and various numerical references herein are merely for the convenience of the description and are not intended to limit the scope of the application.

It should be understood that the term "and/or" in this context is an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist at the same time. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

It should be understood that, in various embodiments of the present application, the size of the serial numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the present application. The process constitutes any limitation.

Those of ordinary skill in the art will appreciate that the various illustrative logical blocks and steps described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. achieve. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it 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 the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

Claims

A method for determining a power head is characterized by comprising:

The first network device receives the first indication information from the second network device, where the first indication information is used to indicate a time-frequency resource of the first physical uplink control channel PUCCH;

Determining, by the first network device, a transmit power of the first PUCCH;

The first network device determines a first power headroom PH, where the first PH is a difference between a maximum transmit power of the first network device and a transmit power of the first PUCCH.
The method according to claim 1, wherein the time unit in which the first PUCCH is located also has a physical uplink shared channel PUSCH, and the first PUCCH and the PUSCH are time division multiplexed; the method further includes:

The first network device determines a second PH, where the second PH is a difference between the maximum transmit power and the transmit power of the PUSCH.
The method according to claim 1, wherein the time unit in which the first PUCCH is located also has a second PUCCH, the first PUCCH and the second PUCCH are time division multiplexed; the method further includes:

The first network device determines a third PH, where the third PH is a difference between the maximum transmit power and the transmit power of the second PUCCH.
The method according to claim 1, wherein the time unit in which the first PUCCH is located further includes a second PUCCH and a physical uplink shared channel PUSCH, and the first PUCCH and the second PUCCH are time division multiplexed. And the second PUCCH and the PUSCH are frequency division multiplexed; the method further includes:

The first network device determines a fourth PH, where the fourth PH is a difference between the maximum transmit power and a sum of the second PUCCH and the PUSCH transmit power.
The method according to claim 1, wherein the time unit in which the first PUCCH is located also has a reference signal, and the first PUCCH and the reference signal are time division multiplexed; the method further includes:

The first network device determines a fifth PH, where the fifth PH is a difference between the maximum transmit power and the transmit power of the reference signal.
The method of claim 1 further comprising:

The first network device receives second indication information from the second network device, where the second indication information is used to indicate a sending manner of the first PUCCH, a format of the carried information, a path loss parameter, and a label. Said at least one of power and power adjustment parameters;

Determining, by the first network device, the transmit power of the first PUCCH, including:

The first network device determines, according to the first indication information and/or the second indication information, a transmit power of the first PUCCH.
A method for determining a power head is characterized by comprising:

The second network device determines first indication information, where the first indication information is used to indicate a time-frequency resource of the PUCCH;

The second network device sends the first indication information to the first network device.
The method of claim 7, wherein the method further comprises:

The second network device sends the second indication information to the first network device, where the second indication information is used to indicate the sending manner of the PUCCH, the format of the carried information, the path loss parameter, the nominal power, and the power. Adjust at least one of the parameters.
A network device, comprising: a processing unit and a transceiver unit,

The transceiver unit is configured to receive first indication information from another network device, where the first indication information is used to indicate a time-frequency resource of the first physical uplink control channel PUCCH;

The processing unit is configured to determine a transmit power of the first PUCCH;

The processing unit is further configured to determine a first power headroom PH, where the first PH is a difference between a maximum transmit power of the first network device and a transmit power of the first PUCCH.
The network device according to claim 9, wherein the time unit in which the first PUCCH is located also has a physical uplink shared channel PUSCH, and the first PUCCH and the PUSCH are time division multiplexed;

The processing unit is further configured to determine a second PH, where the second PH is a difference between the maximum transmit power and a transmit power of the PUSCH.
The network device according to claim 9, wherein the time unit in which the first PUCCH is located also has a second PUCCH, and the first PUCCH and the second PUCCH are time division multiplexed;

The processing unit is further configured to determine a third PH, where the third PH is a difference between the maximum transmit power and a transmit power of the second PUCCH.
The network device according to claim 9, wherein the time unit in which the first PUCCH is located further includes a second PUCCH and a physical uplink shared channel PUSCH, and the first PUCCH and the second PUCCH are time division multiplexed And the second PUCCH and the PUSCH are frequency division multiplexed;

The processing unit is further configured to determine a fourth PH, where the fourth PH is a difference between the maximum transmit power and a sum of a transmit power of the second PUCCH and the PUSCH.
The network device according to claim 9, wherein the time unit in which the first PUCCH is located further has a reference signal, and the first PUCCH and the reference signal are time division multiplexed;

The processing unit is further configured to determine a fifth PH, where the fifth PH is a difference between the maximum transmit power and a transmit power of the reference signal.
The network device according to claim 9, wherein

The transceiver unit is further configured to receive second indication information from the another network device, where the second indication information is used to indicate a sending manner of the first PUCCH, a format of the carried information, and a path loss parameter. At least one of a nominal power and a power adjustment parameter;

The processing unit is further configured to determine, according to the first indication information and/or the second indication information, a transmit power of the first PUCCH.
A network device, comprising: a processing unit and a transceiver unit,

The processing unit is configured to determine first indication information, where the first indication information is used to indicate a time-frequency resource of the PUCCH;

The transceiver unit is configured to send the first indication information to another network device.
The network device according to claim 15, wherein

The transceiver unit is further configured to send the second indication information to the another network device, where the second indication information is used to indicate a sending manner of the PUCCH, a format of the carried information, a path loss parameter, and a nominal power. And at least one of the power adjustment parameters.