CN110351822B

CN110351822B - Method and apparatus for wireless communication

Info

Publication number: CN110351822B
Application number: CN201810300482.0A
Authority: CN
Inventors: 郭英昊; 纪刘榴
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2021-09-21
Anticipated expiration: 2038-04-04
Also published as: WO2019192308A1; CN110351822A

Abstract

The embodiment of the invention provides a wireless communication method and a wireless communication device. In the method and the device, the access network equipment configures at least one Sounding Reference Signal (SRS) for the terminal equipment on frequency domain resources. And the terminal equipment determines the power headroom information of the frequency domain resource according to part or all of the at least one SRS. When the physical channel may be transmitted on the frequency domain resource, the terminal device may further determine power headroom information of the frequency domain resource according to a part or all of the at least one SRS and the physical channel. And the terminal equipment sends the determined power headroom information to the access network equipment. The method and the device can realize more accurate reporting of the power headroom information, thereby being beneficial to realizing independent power control and better resource allocation of the SRS and the physical channel.

Description

Method and apparatus for wireless communication

Technical Field

The present application relates to the field of communications, and more particularly, to a method and apparatus for wireless communication.

Background

In a Long Term Evolution (LTE) system, a terminal device sends a Power Headroom Report (PHR) to an evolved Node B (eNB). The PHR is a Media Access Control (MAC) Control unit (CE) containing Power Headroom (PH) information. The PHR may provide information for power control and scheduling for the eNB. The eNB may select a suitable Modulation and Coding Scheme (MCS), resource size, power control parameters, and the like for uplink transmission of the terminal device according to the PHR.

In LTE, for a serving cell configured to a terminal device, if the serving cell is configured to send only Sounding Reference Signal (SRS), the terminal device may report the PH of the SRS of the serving cell, which is called Type3PH in LTE; otherwise, the terminal device reports the PH of a Physical Uplink Shared Channel (PUSCH), which is called as Type1PH in LTE, or, if the terminal device is configured with a Physical Uplink Control Channel (PUCCH) in the serving cell, the terminal device reports Type1PH and Type2PH, where Type2PH is the PH of the PUSCH and the PUCCH. However, the above-mentioned method for reporting PH cannot satisfy the New Radio (NR) system of the fifth Generation (5G), and therefore, a New solution is needed.

Disclosure of Invention

The embodiment of the invention provides a wireless communication method and a wireless communication device, which aim to realize more accurate reporting of power headroom information and better power control and resource allocation.

In a first aspect, an embodiment of the present invention provides a method for wireless communication. The method comprises the step that the terminal equipment obtains first configuration information, wherein the first configuration information is used for configuring at least one Sounding Reference Signal (SRS) of frequency domain resources. And the terminal equipment determines a first SRS in a first time period of the frequency domain resources according to the first configuration information. Wherein the first SRS comprises one or more of the at least one SRS; and the terminal equipment determines the power headroom information of the frequency domain resource according to the first SRS. Then, the terminal device transmits power headroom information of the frequency domain resource over the first period. Through the scheme of the embodiment of the invention, the terminal equipment can report more accurate power headroom information, thereby being beneficial to the access network equipment to carry out better power control or resource allocation.

In one possible design, a terminal device determines power headroom information for the frequency domain resource according to the first SRS and a physical channel over the first time period of the frequency domain resource. Through the scheme of the embodiment of the invention, the terminal equipment can report the power headroom information of the SRS and the physical channel, thereby being beneficial to the independent power control of the SRS and the physical channel by the access network equipment.

In one possible design, the terminal device determines the first SRS according to a transmission mode of the at least one SRS. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, signaling overhead can be reduced.

In one possible design, the terminal device determines the first SRS according to a function of the at least one SRS. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, signaling overhead can be reduced.

In one possible design, the terminal device determines the first SRS according to a time domain position of the at least one SRS in the first time period. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, signaling overhead can be reduced.

In one possible design, the terminal device determines the first SRS according to the identification information of the at least one SRS. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, signaling overhead can be reduced.

In one possible design, the first SRS includes all of the at least one SRS. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, more detailed power headroom information can be reported.

In one possible design, the terminal device obtains second configuration information, where the second configuration information is used to indicate: the terminal device receives power control commands of the SRS on the physical channel on the frequency domain resource and the frequency domain resource, or the terminal device receives the power control commands of the physical channel and the SRS, or the terminal device sends indication information that the second maximum transmission power of the SRS is different from the second maximum transmission power of the SRS on the physical channel.

In one possible design, the indication that the second maximum transmit power used by the terminal device to transmit the SRS is different from the second maximum transmit power used by the terminal device on the physical channel includes the second maximum transmit power used by the terminal device to transmit the SRS and the second maximum transmit power used by the terminal device on the physical channel, where the second maximum transmit power used to transmit the SRS is different from the second maximum transmit power used on the physical channel.

In a second aspect, an embodiment of the present invention provides a method for wireless communication. The method comprises the steps that access network equipment sends first configuration information to terminal equipment, wherein the first configuration information is used for configuring at least one Sounding Reference Signal (SRS) of frequency domain resources; the access network equipment determines a first SRS over a first time period of frequency domain resources, the first SRS comprising one or more of the at least one SRS; and the access network equipment receives power headroom information of the frequency domain resource sent by the terminal equipment in the first time period, wherein the power headroom information is determined based on the first SRS. Through the scheme of the embodiment of the invention, the access network equipment can obtain more accurate power margin information, thereby being beneficial to the access network equipment to carry out better power control or resource allocation.

In one possible design, the power headroom information is determined based on a physical channel over a first time period of the first SRS and the frequency domain resources. Through the scheme of the embodiment of the invention, the access network equipment can obtain the power headroom information of the SRS and the physical channel so as to better realize the independent power control of the SRS and the physical channel.

In one possible design, the access network device determines the first SRS according to a transmission mode of the at least one SRS. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, signaling overhead can be reduced.

In one possible design, the access network device determines the first SRS according to a function of the at least one SRS. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, signaling overhead can be reduced.

In one possible design, the access network device determines the first SRS according to a time-domain position of the at least one SRS in the first time period. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, signaling overhead can be reduced.

In one possible design, the access network device determines the first SRS according to the identification information of the at least one SRS. The terminal device and the access network device may apply the same rule to determine the first SRS so as to understand the first SRS consistently. Meanwhile, signaling overhead can be reduced.

In one possible design, the access network device sends second configuration information to the terminal device, where the second configuration information is used to indicate: the access network equipment sends power control commands of the SRS on the physical channel and the frequency domain resource on the frequency domain resource respectively, or the access network equipment sends the power control commands of the physical channel and the SRS respectively, or the terminal equipment is used for sending indication information that the second maximum transmission power of the SRS is different from the second maximum transmission power on the physical channel, or the terminal equipment is used for sending the indication information that the second maximum transmission power of the SRS is different from the second maximum transmission power on the physical channel on the frequency domain resource.

In a third aspect, an embodiment of the present invention provides a communication apparatus. The apparatus includes a processor and a transceiver coupled to the processor; a processor configured to obtain first configuration information, the first configuration information being used to configure at least one Sounding Reference Signal (SRS) of a frequency domain resource; a processor further configured to determine a first SRS over a first time period of frequency domain resources according to the first configuration information, the first SRS comprising one or more of the at least one SRS; the processor is further configured to determine power headroom information of a frequency domain resource according to the first SRS; the transceiver is configured to transmit power headroom information over the first time period.

In one possible design, the processor is further configured to determine power headroom information for the frequency domain resources based on the first SRS and a physical channel for the first time period of the frequency domain resources.

In one possible design, a processor may be configured to determine the first SRS according to a transmission mode of at least one SRS.

In one possible design, the processor may be configured to determine the first SRS based on a function of the at least one SRS.

In one possible design, the processor may be configured to determine the first SRS based on a time domain location of the at least one SRS during the first time period.

In one possible design, the processor is configured to determine the first SRS according to identification information of the at least one SRS.

In one possible design, the first SRS includes all of the at least one SRS.

In one possible design, the processor is configured to obtain second configuration information, where the second configuration information is used to indicate: the device receives power control commands of a physical channel and an SRS respectively; or the device receives the power control commands of the physical channel on the frequency domain resource and the SRS on the frequency domain resource respectively; or the apparatus transmits indication information that a second maximum transmission power for the SRS and a second maximum transmission power for the physical channel are different; alternatively, the apparatus is configured to transmit, on the frequency domain resource, indication information that a second maximum transmission power of the SRS and a second maximum transmission power on a physical channel on the frequency domain resource are different.

In one possible design, the indication that the second maximum transmit power used to transmit the SRS is different from the second maximum transmit power used on the physical channel may include a second maximum transmit power used by the apparatus to transmit the SRS and a second maximum transmit power used on the physical channel, where the second maximum transmit power used to transmit the SRS is different from the second maximum transmit power used on the physical channel.

In one possible design, the indication that the second maximum transmit power used to transmit the SRS on the frequency domain resources and the second maximum transmit power used on the physical channel on the frequency domain resources are different includes the second maximum transmit power used by the apparatus to transmit the SRS on the frequency domain resources and the second maximum transmit power used on the physical channel on the frequency domain resources, where the second maximum transmit power used to transmit the SRS on the frequency domain resources is different from the second maximum transmit power used on the physical channel on the frequency domain resources.

In combination with the above aspects or possible designs, in one possible design, the physical channel includes a physical uplink shared channel and/or a physical uplink control channel.

In combination with the above aspects or possible designs, in one possible design, the first configuration information includes at least one of: indication information for indicating a transmission scheme of the at least one SRS, wherein the transmission scheme comprises: an aperiodic transmission mode, a semi-static transmission mode, or a periodic transmission mode; indication information for indicating a function of the at least one SRS, wherein the function includes: for CodeBook (CodeBook) based transmission, and/or for non-CodeBook based transmission, and/or for SRS switching, and/or for beam management; time domain location information of the at least one SRS; identification information of the at least one SRS; identification information of the frequency domain resource.

In combination with the above aspects or possible designs, in one possible design, the power headroom information includes: and one or more pieces of first power headroom information, where the first power headroom information is a difference between a maximum transmission power of the terminal device in the frequency domain resource and a power of the terminal device for transmitting a second SRS, and the second SRS includes one of at least one SRS included in the first SRS. The terminal device may report power headroom information of each SRS in the plurality of SRS.

In combination with the above aspects or possible designs, in one possible design, the power headroom information includes: and one or more second power headroom information, wherein the second power headroom information is a difference between a first maximum transmission power of the terminal device on the frequency domain resource and a power of the terminal device on the first physical channel, and when the physical channel comprises a plurality of channels, the first physical channel is one of the plurality of channels, and when the physical channel comprises one channel, the first physical channel is the channel. The terminal device may report power headroom information of each channel included in the physical channel.

In combination with the above aspects or possible designs, in one possible design, the power headroom information includes: and third power headroom information, wherein the third power headroom information is a difference between a first maximum transmission power of the frequency domain resource of the terminal device and a power of the terminal device for transmitting the first SRS. The embodiment of the invention can reduce the signaling overhead of reporting the power headroom information of the SRS.

In combination with the above aspects or possible designs, in one possible design, the power headroom information includes: and fourth power headroom information, wherein the fourth power headroom information is a difference between a first maximum transmission power of the terminal device on the frequency domain resource and a power of the terminal device on the physical channel. The embodiment of the invention can reduce the signaling overhead of reporting the power headroom information of the physical channel.

In combination with the above aspects or possible designs, in one possible design, the power headroom information includes: and fifth power headroom information, wherein the fifth power headroom information is a difference between a first maximum transmission power of the terminal device in the frequency domain resource and a first transmission power, and the first transmission power is a sum of a power of the terminal device for transmitting the first SRS and a power of the terminal device on a physical channel. The embodiment of the invention can reduce the signaling overhead of reporting the power headroom information of the SRS and the physical channel.

In combination with the above aspects or possible designs, in one possible design, the power headroom information may further include: one or more first indication information, where the first indication information is used to indicate identification information of one SRS of at least one SRS included in the first SRS, and the first indication information is associated with the first power headroom information. By reporting the identification information of the SRS, the access network device can know which SRS power headroom information or which SRS power headroom information is reported by the terminal.

In combination with the above aspects or possible designs, in one possible design, the power headroom information may further include: a first maximum transmit power of the terminal device at the frequency domain resource; and/or the terminal equipment sends the first maximum transmission power of the first SRS; and/or a first maximum transmit power of the terminal device on the physical channel; and/or a first maximum transmit power of the terminal device. By reporting the first maximum transmission power, the access network device can acquire the first maximum transmission power used by the terminal device for determining the power headroom information, thereby facilitating power control or resource allocation.

With reference to the foregoing aspects or possible designs, in one possible design, when the plurality of maximum transmission powers included in the first SRS of the frequency domain resources included in the power headroom information are the same, only one first maximum transmission power is included in the power headroom information, and the one first maximum transmission power is associated with the first SRS. The signaling overhead of reporting the first maximum power of the first SRS can be saved.

With reference to the foregoing aspects or possible designs, in one possible design, when the first maximum transmission power of the first SRS of the frequency domain resource included in the power headroom information is the same as the first maximum transmission power of the physical channel, only one first maximum transmission power may be included in the power headroom information, and the one first maximum transmission power is associated with the first SRS and the physical channel. The signaling overhead of reporting the first maximum power of the first SRS and the physical channel can be saved.

In combination with the above aspects or possible designs, in one possible design, the power headroom information may further include: and second indication information for indicating the identification information of the frequency domain resource. By reporting the identification information of the frequency domain resources, the access network equipment can know which frequency domain resource or resources of the power headroom information is reported by the terminal.

In combination with the above aspects or possible designs, in one possible design, the frequency domain resource may be a serving cell, a primary serving cell, a secondary serving cell, a Component Carrier (CC), a Supplemental Uplink (SUL), or a BandWidth part (BWP).

In one possible design, the first time period may be a subframe, a slot, a mini-slot, a symbol, a transmission time interval, in combination with the above aspects or possible designs.

In a fifth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions that, when executed on a memory, cause the processor to perform the above aspects or possibly the designed method.

In a sixth aspect, an embodiment of the present invention provides a communication apparatus. The communication device includes a processor and a memory for storing instructions; the processor is configured to read and execute the instructions in the memory, so that the communication device performs the above aspects or possible designed methods.

Drawings

Fig. 1 is an architecture diagram of a mobile communication system to which an embodiment of the present application is applied.

Fig. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of an access network device according to an embodiment of the present application.

Fig. 4 is a schematic flow chart of an embodiment of the present application.

Fig. 5 is a schematic diagram of a time domain position of SRS transmission according to an embodiment of the present application.

Fig. 6 is a schematic diagram of power headroom information content 1 according to an embodiment of the present application.

Fig. 7 is a schematic diagram of power headroom information content 2 according to an embodiment of the present application.

Fig. 8 is a schematic diagram of the power headroom information content 3 according to an embodiment of the present application.

Fig. 9 is a schematic diagram of the power headroom information content 4 according to the embodiment of the present application.

Fig. 10 is a schematic diagram of the power headroom information content 5 according to an embodiment of the present application.

Fig. 11 is a schematic diagram of the power headroom information content 6 according to an embodiment of the present application.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be noted that the technical solutions and features in the embodiments of the present invention may be combined with each other without conflict.

It should be understood that the technical solutions of the embodiments of the present application may be applied to various communication systems, for example: long Term Evolution (LTE) System, LTE Frequency Division Duplex (FDD) System, LTE Time Division Duplex (TDD), Code Division Multiple Access (Code Division Multiple Access, CDMA) System, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Network (WLAN) and other current communication systems, and is particularly applied to future 5G New Radio (NR) System or 5G System or communication System based on Orthogonal Frequency Division Multiplexing (OFDM) technology. The present application is described with reference to a 5G system, but is not limited to the 5G system. As can be known to those skilled in the art, with the appearance of a new service scenario and the evolution of a network architecture, the technical solution provided by the embodiment of the present invention is also applicable to similar technical problems.

Fig. 1 shows an example of a communication system to which an embodiment of the present invention is applicable, and this scenario includes an access network device 101, terminal devices 111 to 112 (for simplicity, only 2 terminal devices are shown in fig. 1, but only 2 terminal devices are not meant to be included, in fact, there may be any number of terminal devices), and serving cells 121 to 122 (for simplicity, only 2 serving cells are shown in fig. 1, but only 2 serving cells are not meant to be included, in fact, there may be any number of serving cells). The access network equipment 101 provides services for the terminal equipment 111-112 through one or more of the service cells 121-122, namely the terminal equipment 111-112 communicates with the access network equipment 101 through one or more of the service cells 121-122. It should be understood that fig. 1 is only a schematic diagram, and other network devices, such as a core network device, a wireless relay device, a wireless backhaul device, and the like (not shown in fig. 1) may also be included in the communication system. In the network configuration shown in fig. 1, access network device 101 communicates with terminal device 111 via serving cell 121, and access network device 101 communicates with terminal device 112 via serving cell 121 and serving cell 122. The access network devices 101 of serving

cells

121 and 122 may correspond to the same or two different physical sites (e.g., macro base station and micro base station), which may communicate. The terminal devices 111-112 can be 1) terminal devices which have data to be sent; 2) terminal equipment needing to retransmit data; 3) a terminal device without uplink data, and the like.

In the embodiment of the present invention, an access network device (for example, the access network device 101) is a device deployed in a radio access network to provide a wireless communication function for a terminal device. The access network devices may include various forms of radio access network devices, macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like. The access network device may be a Base Station (BTS) in GSM or CDMA, a Base Station (NodeB, NB) in WCDMA, an evolved Base Station (eNB or e-NodeB) in LTE or ehte, a Base Station gNB (next) in 5g (fine generation), a Base Station in a future mobile communication System, an access Node in WiFi System, a roadside Unit (RSU) in V2X communication, or the like, or a Chip or System On Chip (SOC) inside the access network device. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the access network device. For convenience of description, an access network device is also sometimes referred to herein as a base station, or a wireless access device.

In the embodiment of the present invention, a Terminal device may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), and the like, and the Terminal device may communicate with one or more core networks through a Radio Access Network (RAN). The terminal equipment can be equipment with a wireless transceiving function, can be deployed on land and comprises an indoor or outdoor, a handheld or a vehicle-mounted terminal; can also be deployed on the water surface (such as a ship and the like); and may also be deployed in the air (e.g., airplanes, balloons, satellites, etc.). The terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. For convenience of description, in the present application, a terminal device is sometimes referred to as a UE.

In the embodiment of the present invention, the access network device and the terminal device may communicate with each other through a frequency spectrum below 6 gigahertz (GHz), may communicate through a frequency spectrum above 6GHz, and may communicate through a frequency spectrum below 6GHz and a frequency spectrum above 6GHz at the same time. The embodiments of the present application do not limit the spectrum resources used between the radio access network device and the terminal device. The access network device and the terminal device may communicate with each other through a licensed spectrum (licensed spectrum), may communicate with each other through an unlicensed spectrum (unlicensed spectrum), and may communicate with each other through both the licensed spectrum and the unlicensed spectrum. For example, the serving cells 121 to 122 may be serving cells based on licensed spectrum (licensed spectrum), at this time, the access network device 101 and the terminal devices 111 to 112 may perform data communication on the licensed spectrum, a part or all of the serving cells 121 to 122 may be serving cells based on unlicensed spectrum (unlicensed spectrum), and at this time, the access network device 101 and the terminal devices 111 to 112 may perform data communication on the unlicensed spectrum (unlicensed spectrum). The scenario using the licensed spectrum or the unlicensed spectrum may be a communication system using a licensed spectrum in a single serving cell, a communication system using Carrier Aggregation (CA), a communication system using a large number of carriers Aggregation (MCA), a communication system using Dual Connectivity (DC), a communication system using Multiple Connectivity (MC), a communication system using coordinated Multiple transmission (CoMP), NR-NR DC, Multi-rat radio Access network (DC) (mr DC), a 5G communication system, or a communication system using a licensed spectrum in a future communication system. The scenario may also be an LAA, an eLAA, a FeLAA system, a 5G communication system in an LTE system, or a communication system using unlicensed spectrum (e.g. 5150-.

In the embodiment of the present invention, one or more of the serving cells 121 to 122 may be replaced with a primary serving cell, a secondary serving cell, a Component Carrier (CC), a Supplemental Uplink (SUL), or a BandWidth part (BWP).

For ease of understanding, SUL and BWP are described below.

SUL: the use of the spectrum in NR extends to higher frequency bands such as C-band and even higher. But the data transmission in the high frequency band has larger path attenuation and poorer coverage. For the downlink, the attenuation problem of the high-frequency data channel can be relieved because the access network equipment has larger transmitting power, stronger radio frequency devices and more antennas. However, for the uplink, the problem of small coverage is difficult to solve due to the limited capability of the terminal device. Therefore, NR proposes the design of SUL, that is, on the basis of the original high frequency link, the low frequency link is supplemented to improve the reliability and coverage of the uplink.

BWP: in order to adapt to the requirements of high bandwidth, high frequency, different air interface formats and higher capability of the terminal device for high-frequency transmission, the concept of BWP is introduced into NR, and the main application scenarios include at least one of the following scenarios: (1) support smaller bandwidth capabilities for the terminal device; (2) the energy consumption of the terminal equipment is reduced by changing the bandwidth; (3) supporting frequency division multiplexing of different base parameter sets (numerology); (4) non-contiguous spectrum is supported; (5) forward compatibility is supported.

FIG. 2 shows a wireless communication device provided in an embodiment of the present invention, which can be used as the terminal devices 111 to 112 or as a device applied to the terminal devices 111 to 112. The following description will be given taking the radio communication apparatus shown in fig. 2 as an example of a terminal apparatus. The terminal equipment can execute the method provided by the embodiment of the invention. The terminal equipment can be any one of 2 terminal equipments 111 to 112. The terminal device comprises a transceiver 201, a processor 204 for implementing wireless communication functions and a memory 203.

The transceiver 201 may be used to support the transmission and reception of information between the terminal devices 111-112 and the access network device 101. In the downlink, a downlink radio frequency signal from the access network device is received via an antenna, demodulated by the transceiver 201, extracted from the baseband signal and output to the processor 204 for processing, so as to recover the traffic data and/or signaling information sent by the access network device. On the uplink, a baseband signal carrying traffic data and/or signaling messages to be sent to the access network equipment is modulated by the transceiver 201 to generate an uplink radio frequency signal, and is transmitted to the access network equipment via the antenna. The transceiver 201 can also be used to support the transceiving of information between the terminal devices 111-112. The transceiver 201 may include separate receiver and transmitter circuits, or may be integrated in the same circuit to perform the transceiving function.

Processor 204 may be a modem processor (modem processor). The processor 204 may include a baseband processor (BBP) that processes the digitized received signal to extract the information or data bits carried in the signal. For this purpose, the BBP is typically implemented in one or more Digital Signal Processors (DSPs) within the processor 204 or by a separate Integrated Circuit (IC).

For example, as shown in FIG. 2, processor 204 may include an encoder 2041, a modulator 2042, a decoder 2043, and a demodulator 2044. The encoder 2041 is used to encode a signal to be transmitted. For example, encoder 2041 may be used to receive traffic data and/or signaling messages to be transmitted on the uplink (or the sidelink) and to process (e.g., format, encode, interleave, or the like) the traffic data and signaling messages. The modulator 2042 is used to modulate the output signal of the encoder 2041. For example, the modulator may process symbol mapping and/or modulation, etc., of the encoder's output signals (data and/or signaling) and provide output samples. Demodulator 2044 is configured to perform demodulation processing on the input signal. For example, demodulator 2044 processes the input samples and provides symbol estimates. The decoder 2043 is used to decode the demodulated input signal. For example, the decoder 2043 deinterleaves, decodes, or the like the demodulated input signal, and outputs a decoded signal (data and/or signaling).

The processor 204 receives digitized data, which may represent voice, data, or control information, and processes the digitized data for transmission. The processor 204 may support one or more of various wireless communication protocols of various communication systems, such as Long Term Evolution (LTE) communication System, New Radio (NR), Universal Mobile Telecommunications System (UMTS), High Speed Packet Access (HSPA), and so on. Optionally, one or more memories may also be included in the processor 204.

The memory 203 is used to store program code (also sometimes referred to as programs, instructions, software, etc.) and/or data used to support communication for the terminal devices.

It is noted that the memory 203 may include one or more memory units, for example, a memory unit inside the processor 204 or the application processor 202, or an external memory unit independent of the processor 204 or the application processor 202, or a component including a memory unit inside the processor 204 or the application processor 202 and an external memory unit independent of the processor 204 or the application processor 202.

The terminal device may also include an application processor (application processor)202 for generating the aforementioned digitized data which may represent voice, data or control information. The processor 204 and the application processor 202 may be integrated in one processor chip.

Fig. 3 illustrates a wireless communication device provided in an embodiment of the present invention, which may be used as the access network device 101 or an apparatus applied in the access network device 101. The following description will be given taking the wireless communication device shown in fig. 2 as an access network device as an example. The access network equipment can execute the method provided by the embodiment of the invention. The access network equipment includes a transceiver 302, a controller or processor 301 (processor 301 is illustrated below) and a memory 303.

The transceiver 302 may be used to support the transceiving of information between the access network device 101 and the terminal devices 111-112. In the uplink, an uplink radio frequency signal from the terminal device is received via an antenna, demodulated by the transceiver 302, extracted from the baseband signal and output to the processor 301 for processing, so as to recover the traffic data and/or signaling information sent by the terminal device. On the downlink, baseband signals carrying traffic data and/or signaling messages to be sent to the terminal device are modulated by processor 301 to generate radio frequency signals for the uplink, which are transmitted via the antenna to the access network device. The transceiver 302 may also be used to support the transceiving of information between the terminal devices 111-112. The transceiver 302 may include separate receiver and transmitter circuits or may be integrated in the same circuit to perform the transceiving function.

Processor 301 is sometimes referred to as a modem processor. Processor 301 may include a baseband processor (BBP) (not shown in fig. 3) that processes a digitized received signal to extract the information or data bits conveyed in the signal. As such, the BBP is typically implemented in one or more Digital Signal Processors (DSPs) within the processor 301 or as a separate Integrated Circuit (IC) as needed or desired.

Memory 303 is used to store program code (also sometimes referred to as programs, instructions, software, etc.) and/or data used to support communications for the access network equipment.

It is noted that the memory 303 may include one or more memory units, for example, may be a memory unit inside the processor 301, or may be an external memory unit independent from the processor 301, or may also be a component including a memory unit inside the processor 301 and an external memory unit independent from the processor 301.

The access network device 101 may further comprise a communication unit 304 for supporting the access network device 101 to communicate with other network entities. For example, a network device or the like for supporting the access network device 101 to communicate with the core network.

Optionally, the access network device 101 may further include a bus. The transceiver 302, the memory 303, and the communication unit 304 may be connected to the processor 301 through a bus. For example, the bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The bus may include an address bus, a data bus, and a control bus, among others.

The processor 204 and the processor 301 may be the same type of processor or may be different types of processors. For example, the present invention may be implemented in a Central Processing Unit (CPU), a general purpose Processor, a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a transistor logic device, a hardware component, other Integrated circuits, or any combination thereof. The processor 204 and the processor 301 may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure of the embodiments of the invention. Processor 204 and processor 301 may also be a combination of devices implementing computing functionality, such as a combination comprising one or more microprocessors, DSPs and microprocessors, or system-on-a-chips (SOCs), among others.

Those of skill in the art would appreciate that the various illustrative logical blocks, modules, circuits, and algorithms described in connection with the aspects disclosed herein may be implemented as electronic hardware, instructions stored in a memory or another computer-readable medium and executed by a processor or other processing device, or combinations of both. As an example, the apparatus described herein may be used in any circuit, hardware component, IC, or IC chip. The memory disclosed herein may be any type and size of memory and may be configured to store any type of information as desired. To clearly illustrate this interchangeability, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. How such functionality is implemented depends upon the particular application, design choices, and/or design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present invention.

For ease of understanding, the PHR is described below.

The PHR is a Media Access Control (MAC) Control unit (CE) composed of at least one Power Headroom (PH). In LTE, each PH corresponds to an Activated Serving Cell (Activated Serving Cell). The PH represents a difference between the maximum Transmission Power allowed by the terminal device on one serving cell and the Transmission Power (Estimated Transmission Power) Estimated by the terminal device on the serving cell. The terminal device reports the PH to the access network device to notify the power headroom information of the terminal device, so that the access network device performs reasonable resource allocation and/or power control on the terminal device.

Specifically, in the LTE system, there are three types of PH formats (types), which are:

type 1: the difference between the maximum transmission power allowed by the terminal device in a serving cell and the PUSCH (Physical Uplink Shared CHannel) power transmitted by the terminal device is represented. For example, when calculating the PH of subframe i of serving cell c, only the power for transmitting PUSCH is considered, where c denotes the number of serving cell and i denotes the number of subframe. The PUSCH is a physical Channel, and a corresponding transport Channel is an Uplink Shared Channel (UL-SCH). Thus, Type1PH may also represent the difference between the maximum transmit power allowed by the terminal device on a serving cell and the power at which the terminal device transmits the UL-SCH on the serving cell. It should be noted that the Power for the terminal device to transmit the PUSCH is the Estimated transmit Power (Estimated Transmission Power) of the terminal device for transmitting the PUSCH, and the Estimated transmit Power may be the same as the Power for actually transmitting the PUSCH or may be different from the Power for actually transmitting the PUSCH.

Type 2: the difference between the maximum transmission power allowed by the terminal device in a serving cell and the power of the terminal device transmitting PUSCH and Physical Uplink Control Channel (PUCCH) in the serving cell is represented. For example, when calculating the PH of the subframe i of the serving cell c, the power for transmitting the PUSCH and the PUCCH is considered. Type2PH may also represent the difference between the maximum transmit power allowed by the terminal device on a serving cell and the power at which the terminal device transmits the UL-SCH and PUCCH on that serving cell. The power of the terminal device for transmitting the PUSCH and the PUCCH is the transmission power estimated by the terminal device for transmitting the PUSCH and the PUCCH, and the power of the terminal device for transmitting the SRS is the transmission power estimated by the terminal device for transmitting the SRS.

Type 3: represents the difference between the maximum transmission power allowed by the terminal equipment in a serving cell and the power of the Reference Signal (SRS) transmitted by the terminal equipment in the serving cell. For example, when calculating the PH of subframe i of serving cell c, the power of transmitting SRS is considered. In the LTE system, if and only if a serving Cell of a terminal device is a Secondary serving Cell (Scell) and the serving Cell is configured to send only a Sounding Reference Signal (SRS), the terminal device may report the PH of the SRS of the serving Cell through Type3 PH. When the terminal device can transmit both PUSCH and SRS on a Primary serving Cell (PCell) or SCell, the terminal device can only transmit Type1 PH. When the terminal device can transmit both PUSCH and PUCCH and SRS on PCell or SCell, the terminal device can only transmit Type1PH and Type2 PH.

It should be noted that, when there are multiple serving cells, the sum of the estimated transmit powers of the terminal device on the multiple serving cells may exceed the maximum transmit power of the terminal device, and therefore, the terminal device may further adjust the estimated transmit power so that the transmit power meets the requirement of the maximum transmit power of the terminal device.

In the LTE system, when an access network device communicates with a terminal device, power control for transmitting SRS and power control for transmitting PUSCH are bound (or associated) with each other, and by using the above-mentioned conventional PH technical solution, power control for binding between SRS transmission and PUSCH transmission can be supported. However, in the 5G NR system, when the access network device communicates with the terminal device, it is necessary to perform power control for transmission of SRS and transmission of PUSCH separately. That is, power control for transmitting SRS and power control for transmitting PUSCH are independent of each other. At this time, with the existing PH technical solution, the access network device cannot relatively accurately convert the SRS power headroom and the PUSCH power headroom, so that it is not possible to separately perform power control on the SRS and the PUSCH. Thus, the accuracy of power control and resource allocation performance are affected.

In order to solve the above problem, the present invention provides a wireless communication method. In the method, the access network equipment configures at least one SRS on a serving cell for the terminal equipment. And the terminal equipment determines the power headroom information of the serving cell according to part or all of the at least one SRS and one or more physical channels, and sends the power headroom information to the access network equipment. Therefore, the access network equipment obtains more accurate power headroom information of the terminal equipment in the service cell, and the accuracy of power control and the resource allocation performance are improved.

It should be noted that, in each embodiment of the present invention, the serving Cell may also be a Primary serving Cell (Primary Cell, PCell), a Secondary serving Cell (Secondary Cell, SCell), a Primary Secondary Cell (Primary Secondary Cell, PScell) Component Carrier (Component Carrier, CC), a Supplemental Uplink (SUL), or a BandWidth part (BandWidth part, BWP). And the like. In the embodiments of the present invention, they are collectively referred to as frequency domain resources. Accordingly, the power headroom PH of one serving cell may be replaced with the PH of one BWP, or replaced with the PH of one CC, or replaced with the PH of one SUL, etc.

When the terminal device determines the PH on one serving cell, the maximum transmission power allowed on the serving cell used is the maximum transmission power allowed on the serving cell determined by the terminal device. Specifically, the terminal device determines according to at least one of a maximum transmission power capability of the terminal device, a maximum transmission power in the serving cell notified by the access network device, and a power backoff. For example, the maximum transmit power capability of the terminal is 23 decibel-milliwatt (dBm), the maximum transmit power notified by the access network device in a serving cell is 20dBm, and the power backoff is 2dB, so that the maximum transmit power allowed by the terminal device in the serving cell is equal to 18 dBm. For convenience of description, in the embodiments of the present invention, the maximum transmission power on the serving cell determined by the terminal device is also referred to as the first maximum transmission power on the serving cell. Accordingly, the maximum transmit power allowed over a BWP determined by the terminal device is also referred to as the first maximum transmit power over BWP. The maximum transmission power allowed on one SUL determined by the terminal device is also referred to as the first maximum transmission power on the SUL, the maximum transmission power allowed on one frequency domain resource determined by the terminal device is also referred to as the first maximum transmission power on the frequency domain resource, and so on. Correspondingly, the maximum transmission power notified by the access network device is also referred to as the second maximum transmission power. For example, the maximum transmission power of the terminal device in a serving cell notified by the access network device is also referred to as the second maximum transmission power of the terminal device in the serving cell. The maximum transmission power of the terminal device at a BWP notified by the access network device is also referred to as the second maximum transmission power of the terminal device at BWP. The maximum transmission power of the terminal device in one frequency domain resource notified by the access network device is also referred to as a second maximum transmission power of the terminal device in the frequency domain resource, and the like.

Accordingly, in various embodiments of the present invention, the PH of one BWP represents the difference between the first maximum transmit Power of the terminal device on one BWP and the Estimated transmit Power (Estimated Transmission Power) of the terminal device on the BWP. The PH of one CC represents the difference between the first maximum transmit Power of the terminal device on one CC and the Estimated transmit Power (Estimated Transmission Power) of the terminal device on that CC. The PH of an SUL represents the difference between the first maximum transmit Power of the terminal device on an SUL and the Estimated transmit Power (Estimated Transmission Power) of the terminal device on the SUL. The PH of one frequency domain resource represents a difference between a first maximum Transmission Power of the terminal device on one frequency domain resource and a Transmission Power (Estimated Transmission Power) of the terminal device on the frequency domain resource, and the like.

Fig. 4 is a flowchart illustrating a wireless communication method according to an embodiment of the present invention.

The terminal device in each embodiment of the present invention may be any one of the terminal devices 111 to 112 in fig. 1.

The embodiment of the invention comprises the following steps:

step S101, the access network equipment sends first configuration information to the terminal equipment; accordingly, the terminal device receives the first configuration information from the access network device.

The first configuration information is used to configure at least one Sounding Reference Signal (SRS) of the frequency domain resources.

Alternatively, the at least one SRS can be replaced by at least one set of SRSs, where each set of SRSs includes at least one SRS. At this time, for the operation of at least one SRS in the embodiment of the present invention, for example, determining the first SRS, determining the power headroom information, reporting the power headroom information, and the like, are all based on a group of SRS.

In the embodiments of the present invention, the frequency domain resource may be: serving Cell (Serving Cell), Primary Serving Cell (Primary Cell, PCell), Secondary Serving Cell (Secondary Cell, SCell), Primary Secondary Cell (Primary Secondary Cell, PScell) Component Carrier (Component Carrier, CC), supplemental Uplink (sull), or frequency segment (BandWidth part, BWP). The frequency domain resource may be a frequency domain resource of a licensed spectrum or a frequency domain resource of an unlicensed spectrum. The invention is not limited. The terminal device may transmit the configured at least one SRS on the configured frequency domain resource. Further terminal equipment can also transmit PUSCH (i.e. transmit information on PUSCH) and/or PUCCH (i.e. transmit information on PUCCH) on the configured frequency domain resources.

Specifically, the first configuration information includes at least one of:

information 11: indication information for indicating a transmission scheme of the at least one SRS, wherein the transmission scheme comprises: an aperiodic transmission scheme, a semi-static transmission scheme, or a periodic transmission scheme.

Specifically, if the SRS is transmitted in an aperiodic manner, the terminal device transmits the SRS to the access network device only once after receiving the command from the access network device. For example, the access network device notifies the UE to send the SRS once through a Physical Downlink Control Channel (PDCCH). The primary SRS may include multiple SRS resources and may occupy multiple OFDM symbols. If the SRS is transmitted in a semi-static manner, the terminal device periodically transmits the SRS to the access network device according to a preconfigured period after receiving an activation command of the access network device, for example, a MAC Control Element (MAC CE), and stops transmitting the SRS to the access network device when the terminal device receives a deactivation (or release) command of the access network device, for example, the MAC CE. The SRS may be transmitted multiple times during activation and deactivation. And if the SRS sending mode is a periodic sending mode, the terminal equipment sends the SRS periodically to the access network equipment according to the preconfigured period.

Optionally, when the sending mode is a periodic or semi-static sending mode, the first configuration information may also carry period information. For example, the period length is 10ms, or 2 subframes, or 5 slots, or 5 OFDM symbols, etc.

Information 12: indication information for indicating a function of the at least one SRS, wherein the function includes: for CodeBook (CodeBook) based transmission, and/or for non-CodeBook based transmission, and/or for SRS Switching (Switching), and/or for beam management.

Information 13: time domain location information of the at least one SRS.

The time domain location information may indicate an absolute time domain location, such as a radio frame or radio frames, or subframes, or time slots, or Orthogonal Frequency Division Multiplexing (OFDM) symbols, where resources of each of the at least one SRS are located, or the like. The time domain location information may also indicate a relative time domain location, such as a radio frame offset, or a subframe offset, or a slot offset, or an Orthogonal Frequency Division Multiplexing (OFDM) symbol offset, etc. The terminal device may determine an absolute time domain position from the relative time domain position.

Information 14: identification information of the at least one SRS;

the access network device may configure multiple SRSs on one frequency domain resource for the terminal device, that is, configure multiple sets of SRS resources, where different SRSs may have different transmission modes and different SRSs may also have different functions. At this time, in order to distinguish different SRSs, the first configuration information carries identification information of at least one SRS. Different SRSs have different identification information. The identification information may be explicit identification information, for example, the identification information may be an identification (Identity) or an Index (Index). Alternatively, the identification information may be implicit identification information, for example, the identification information of one SRS is determined according to a position of the SRS in at least one SRS in the first configuration information, the identification information of the first SRS is 0, the identification information of the second SRS is 1, and the like. The invention is not limited. The identification information of the SRS may also be an identification of the resource occupied by the SRS, such as a resource ID. The identification information of the SRS may also be an identification of a resource group in which the resource occupied by the SRS is located. The identification information of the SRS may also be an identification of a time domain resource occupied by the SRS, or a frequency domain resource identification, or a code domain resource identification, or a space domain resource identification, etc. When the at least one SRS is replaced with at least one group of SRSs, the identification information of the SRS may be identification information of the SRS group. And will not be described in detail.

Optionally, when the access network device configures only one SRS for the terminal device on one frequency domain resource, the first configuration information may not carry identification information of the SRS. The terminal device and the access network device may represent the SRS according to predefined identifiers.

Information 15: identification information of the frequency domain resource.

The access network device may configure the terminal device with a plurality of frequency domain resources. For example, in the scenarios of CA, LAA, DC, LTE, NR DC, and the like, the access network device configures 5 frequency domain resources for the terminal device. At this time, in order to distinguish different frequency domain resources, the first configuration information carries identification information of the frequency domain resources. Different frequency domain resources may have different identification information. The identification information may be explicit identification information, for example, when the frequency domain resource is a serving Cell, the identification information may be a Cell Identity (Cell Identity) or a Cell Index (Cell Index), and when the frequency domain resource is BWP, the identification information may be BWP Identity or a BWP Index. Alternatively, the identification information may be implicit identification information, for example, the identification information of one frequency domain resource is determined according to the positions of the frequency domain resource in the plurality of frequency domain resources included in the first configuration information, the identification information of the first frequency domain resource is 0, the identification information of the second frequency domain resource is 1, and the like. For another example, the identification information of one frequency domain resource is determined according to the order of frequencies of the frequency domain resource from low to high (or from high to low) in the plurality of frequency domain resources included in the first configuration information. The invention is not limited.

Optionally, when the access network device configures only one frequency domain resource for the terminal device, the first configuration information may not carry identification information of the frequency domain resource.

It should be noted that, a part of the information 11 to the information 15 may be fixed or pre-configured in the protocol, and another part is carried in the first configuration information. For example, if the information 11 is fixed in the protocol as a periodic transmission method, or the information 11 is preconfigured as a periodic transmission method, the first configuration information may not carry the information 11. Other information is similar to this and will not be described in detail.

In one implementation, the terminal device may receive the first configuration information or receive one or more of information 11 to information 15 included in the first configuration information through a Radio Resource Control (RRC) layer message, a Media Access Control (MAC) layer message, or a physical layer message. The RRC layer message may be a system broadcast message, or the RRC layer message may be a dedicated RRC message. The invention is not limited.

In one implementation, the information 11 to 15 in the first configuration information may be in the same message or in different messages. For example, the information 11 to 13 are in the RRC reconfiguration message 1, and the information 14 to 15 are in the RRC reconfiguration message 2. The invention is not limited.

In one implementation, the transceiver 302 in the access network device may be configured to send the first configuration information, or the processor 301 in the access network device controls the transceiver 302 to send the first configuration information.

In one implementation, the transceiver 204 in the terminal device may be configured to receive the first configuration information, or the processor 201 in the terminal device controls the transceiver 204 to receive the first configuration information.

Step S102, the access network equipment sends second configuration information to the terminal equipment; correspondingly, the terminal device receives the second configuration information from the access network device.

The second configuration information may be used to indicate any of the following information:

information 21: the access network equipment respectively sends a physical channel and a Power Control command (TPC) of the SRS to the terminal equipment; correspondingly, the terminal device receives the power control command of the physical channel and the power control command of the SRS, which are sent by the access network device, respectively.

In various embodiments of the present invention, the physical channel comprises PUSCH and/or PUCCH. For example, the access network device sends a PUSCH (or PUCCH) power control command and an SRS power control command to the terminal device, and the terminal device adjusts the transmission power of the PUSCH (or PUCCH) according to the received PUSCH (or PUCCH) power control command; and adjusting the transmitting power of the SRS according to the received power control command of the SRS. Or the access network equipment respectively sends the power control command of the PUSCH, the power control command of the PUCCH and the power control command of the SRS to the terminal equipment. And the access network equipment sends a power control command of a PUSCH, a power control command of a PUCCH and a power control command of an SRS to the terminal equipment through one or more pieces of downlink control information.

When the access network device configures multiple frequency domain resources for the terminal device, the information 21 indicates that the access network device sends power control commands of the physical channel and the SRS to the terminal device on all the multiple frequency domain resources.

The advantage of using the information 21 is that when the access network device configures multiple frequency domain resources for the terminal device, the signaling overhead of the second configuration information can be effectively saved.

Information 22: the access network equipment respectively sends power control commands of a physical channel on frequency domain resources and an SRS on the frequency domain resources to the terminal equipment; correspondingly, the terminal device receives the power control command of the physical channel and the power control command of the SRS on the frequency domain resource, which are sent by the access network device, respectively. In contrast to information 21, information 22 is only applied to specific frequency domain resources. For example, the access network device configures 3 frequency domain resources (denoted as frequency domain resource 1, frequency domain resource 2, and frequency domain resource 3) for the terminal device, and may only apply to frequency domain resource 1 and frequency domain resource 3 through the information 22. Compared to the information 21, the information 22 is more flexible, but the signaling overhead is larger.

Optionally, when the access network device configures a frequency domain resource for the terminal device, the information 21 is the same as the information 22.

Information 23: the second maximum transmission power used by the terminal device for sending the SRS is different from the second maximum transmission power used on the physical channel. The information 23 may also be a second maximum transmission power used by the terminal device to transmit the SRS and a second maximum transmission power used on the physical channel, wherein the second maximum transmission power used to transmit the SRS is different from the second maximum transmission power used on the physical channel. For example, the second maximum transmit power for transmitting SRS is 20dBm, the second maximum transmit power for PUSCH and/or PUCCH is 23dBm, etc. The advantage of using the information 23 is that when the access network device configures a plurality of frequency domain resources for the terminal device, the signaling overhead of the second configuration information can be effectively saved, and flexibility is provided for scheduling of the access network device.

Information 24: the second maximum transmit power used by the terminal device to transmit the SRS on the frequency domain resource is different from the second maximum transmit power used on the physical channel on the frequency domain resource. The information 24 may also be a second maximum transmit power used by the terminal device to transmit the SRS on the frequency domain resources and a second maximum transmit power used on the physical channel on the frequency domain resources, wherein the second maximum transmit power used to transmit the SRS on the frequency domain resources is different from the second maximum transmit power used on the physical channel on the frequency domain resources. In contrast to information 23, information 24 only applies to specific frequency domain resources. For example, the access network device configures 3 frequency domain resources (denoted as frequency domain resource 1, frequency domain resource 2, and frequency domain resource 3) for the terminal device, and may only apply to frequency domain resource 1 and frequency domain resource 3 through information 24. Compared to the information 23, the information 24 is more flexible, but the signaling overhead is larger.

In one implementation, the terminal device may carry the second configuration information through a Radio Resource Control (RRC) layer message, a Media Access Control (MAC) layer message, or a physical layer message. The RRC layer message may be a system broadcast message, or the RRC layer message may be a dedicated RRC message. The invention is not limited.

In one implementation, the first configuration information and the second configuration information may be in the same message or in different messages, which is not limited in the present invention.

In one implementation, the transceiver 302 in the access network device may be configured to send the second configuration information, or the processor 301 in the access network device controls the transceiver 302 to send the second configuration information.

In one implementation, the transceiver 204 in the terminal device may be configured to receive the second configuration information, or the processor 201 in the terminal device controls the transceiver 204 to receive the second configuration information.

In one implementation, the second configuration information may be fixed in the protocol. At this time, step S102 may be replaced by the terminal device obtaining the second configuration information. That is, the access network device does not need to send the second configuration information to the terminal device, and the terminal device does not need to receive the second configuration information from the access network.

In one implementation, the processor 201 in the terminal device may be configured to obtain the second configuration information.

Step S102 is optional.

Step S103, the terminal device determines a first SRS over a first time period of the frequency domain resource.

Optionally, before the terminal device determines the first SRS, the PH reporting is triggered. The condition for triggering the reporting of the PH comprises any one of the following conditions:

condition 1, forbidding the PH reporting Timer (prohibitPHR-Timer) from overtime, and at least one path loss value of the activated frequency domain resource is larger than a specific value, such as dl-Path Change dB

Condition 2, timeout of periodic PH reporting Timer (periodicPHR-Timer)

Condition 3, configuration or reconfiguration of PHR function by RRC

Conditional 4, the configured uplink frequency domain resource is activated, wherein the uplink frequency domain resource may be the SCell

Condition 5, adding frequency domain resources, wherein the frequency domain resources may be PSCell

Condition 6, for any frequency domain resource, the power backoff has changed by more than a certain value since the last PHR transmission, such as dl-PathlossChange dB, if the prohibitpyr-Timer times out

Condition 7, the SRS and physical channel power control scheme changes. For example, the SRS and the physical channel are respectively controlled by unified power control, or the SRS and the physical channel are respectively controlled by unified power control.

Conditional 8, the resources of the SRS are configured or reconfigured. For example, the terminal device is not configured with the SRS resource before, the SRS resource is configured through the first configuration information, or the SRS resource configured by the terminal device before is changed.

After the PH is triggered, if the terminal device has physical resources for transmitting uplink data in a first time period, the terminal device may determine a first SRS in the first time period of the frequency domain resources.

Before describing that the terminal device determines the first SRS over the first time period of the frequency domain resources, the first time period is described. In general, the length of the first period may represent the shortest time to transmit one Transport Block (TB) or MAC Protocol Data Unit (PDU). The length of the first Time period may be N milliseconds, or the length of the first Time period may be equal to the length of N subframes (subframes), or equal to the length of N slots (slots), or equal to the length of N Mini-slots (Mini-slots), or equal to the length of N OFDM symbols, or equal to the length of a Transmission Time Interval (TTI), etc. N is a positive integer. The length of the first time period may be different in different communication systems. There may also be a plurality of different lengths of the first time period in the same communication system. For example, in the UMTS system, the length of the first period may be 10ms, or 2ms, and in the LTE system, the length of the first period may be 1ms, or 0.5 ms. The invention is not limited.

Taking the example that the length of the first period is equal to the length of the time slot, the first period represents a specific time slot. FIG. 5 shows an exemplary diagram of SRS transmission over slot i, slot i + x, slot i + y, and slot i + z. Taking the LTE system as an example, when a Normal Cyclic Prefix (Normal Cyclic Prefix) is used, one slot includes 14 OFDM symbols, one small box in the figure represents one OFDM symbol, and the first OFDM symbol to the last OFDM symbol of the slot are numbered OFDM0 to OFDM13, respectively. Assuming that the first configuration information includes 5 SRSs, the corresponding SRS identification information is 0 to 4, and the 5 SRSs are respectively represented as SRS0 to SRS 4). And in the time slot i, the terminal equipment determines that the SRS 0-SRS 2 need to be transmitted according to the first configuration information. And in the time slot i + x, the terminal equipment determines that the SRS 3-SRS 4 need to be transmitted according to the first configuration information. And in the time slot i + y, the terminal equipment determines not to transmit the SRS according to the first configuration information. And in the time slot i + z, the terminal equipment determines that the SRS 0-SRS 4 need to be transmitted according to the first configuration information. Here, SRS1 and SRS2 are transmitted in the same OFDM symbol, and in this case, the resources of SRS1 and SRS2 in the frequency domain may be different, or the resources in the code domain may be different.

The first SRS includes one or more of the at least one SRS in step S101. Specifically, the terminal device may determine the first SRS by using one or more of the following implementations.

In the method 1, the terminal device determines the first SRS according to information 11 included in the first configuration information and indication information for indicating a transmission method of the at least one SRS. For example, the terminal device obtains a pre-configured rule, which may be that the priority of the aperiodic transmission mode is the highest, the priority of the semi-static transmission mode is the next highest, and the priority of the periodic transmission mode is the lowest. When the transmission modes of the multiple SRSs of the terminal device are different in the first time period, the terminal device may determine the first SRS in a mode that the priority is from high to low (or from low to high).

One implementation manner of the method 1 may be that the terminal device determines the first SRS from one or more SRSs actually to be transmitted in the first time period. Also, in the example of fig. 5, it is assumed that the SRS0 transmission scheme is an aperiodic transmission scheme, the SRS1 transmission scheme is a semi-static transmission scheme, the SRS2 transmission scheme is a periodic transmission scheme, the SRS3 transmission scheme is a semi-static transmission scheme, and the SRS4 transmission scheme is a periodic transmission scheme. In the time slot i, since the priority of the aperiodic transmission method is higher than the priorities of the semi-static transmission method and the periodic transmission method, the terminal device determines that the first SRS in the time slot i is the SRS 0. In the time slot i + x, since the priority of the semi-static transmission mode is higher than that of the periodic transmission mode, the terminal device determines that the first SRS in the time slot i + x is the SRS 3.

Another specific implementation manner of the method 1 may be that the terminal device determines the first SRS in the first time period according to the transmission manners of all the at least one SRS. At this time, the first SRS determined by the terminal device includes an SRS that is not transmitted in the first time period. For example, also in fig. 5, it is assumed that the SRS0 transmission scheme is an aperiodic transmission scheme, the SRS1 transmission scheme is a semi-static transmission scheme, the SRS2 transmission scheme is a periodic transmission scheme, the SRS3 transmission scheme is a semi-static transmission scheme, and the SRS4 transmission scheme is a periodic transmission scheme. On slot i + x, although the terminal device would only transmit SRS3 and SRS4, according to the above preconfigured rules, the terminal device still determines the first SRS on slot i + x to be SRS 0.

It will be appreciated that the priority order of the various transmission modes in the preconfigured rule described above may also be priority of periodic transmission mode > priority of semi-static transmission mode > priority of periodic transmission mode, where the symbol ">" indicates higher. The priority order of the various sending modes in the preconfigured rule is not specifically limited in the embodiments of the present invention.

In mode 2, the terminal device determines the first SRS according to indication information, which is included in the first configuration information and is used for indicating the function of the at least one SRS, of the information 12. For example, the terminal device obtains a preconfigured rule, which may be priority for CodeBook (CodeBook) based transmission > priority for non-CodeBook based transmission > priority for SRS switching > priority for beam management, where the symbol ">" indicates higher. When the functions of the plurality of SRSs of the terminal device are different in the first time period, the terminal device may determine the first SRS in a manner that the priority is from high to low (or from low to high). The function of SRS may in turn belong to a function for uplink measurement or a function for downlink measurement, e.g. for CodeBook (CodeBook) based transmission and for non-CodeBook based transmission belong to a function for downlink measurement, for SRS handover belong to an uplink measurement function, etc. At this time, the terminal device may determine the first SRS according to a preconfigured rule, such as priority of the function for uplink measurement > (or less than priority of the function for downlink measurement).

One implementation manner of the method 2 may be that the terminal device determines the first SRS from one or more SRSs actually to be transmitted in the first time period. Still taking fig. 5 as an example, assume that the function of SRS0 is for CodeBook (CodeBook) based transmission, the function of SRS1 is for non-CodeBook based transmission, the function of SRS2 is for SRS switching, the function of SRS3 is for SRS switching, and the function of SRS4 is for beam management. On slot i, since the priority for CodeBook-based (CodeBook) transmission is higher than the priority for non-CodeBook-based transmission and for SRS switching, the terminal device determines the first SRS on slot i to be SRS 0. On the slot i + x, since the priority for SRS switching is higher than the priority for beam management, the terminal device determines the first SRS on the slot i + x to be the SRS 3.

Another specific implementation manner of the mode 2 may be that the terminal device determines the first SRS over the first time period according to the functions of all the at least one SRS. At this time, the first SRS determined by the terminal device includes an SRS that is not transmitted in the first time period. For example, still taking fig. 5 as an example, assume that the function of SRS0 is for CodeBook (CodeBook) based transmission, the function of SRS1 is for non-CodeBook based transmission, the function of SRS2 is for SRS switching, the function of SRS3 is for SRS switching, and the function of SRS4 is for beam management. On slot i + x, although the terminal device would only transmit SRS3 and SRS4, according to the above preconfigured rules, the terminal device still determines the first SRS on slot i + x to be SRS 0.

It is to be understood that the priority order of the various transmission manners in the above preconfigured rule may also be used for priority of non-CodeBook based transmission > priority for SRS switching > priority for beam management, where the symbol ">" indicates higher. The priority order of various functions in the preconfigured rule is not specifically limited in the embodiments of the present invention.

In mode 3, the terminal device determines the first SRS according to the time domain location information of the at least one SRS included in the first configuration information. For example, the terminal device obtains a preconfigured rule, which may be that the earlier the time domain position of the at least one SRS in the first time period is, the higher the priority is, and the later the time domain position is, the lower the priority is. When the time domain positions of the plurality of SRSs of the terminal device are different in the first time period, the terminal device may determine the first SRS in a manner that the priority is from high to low (or from low to high). The time domain position is early to indicate that the number of the OFDM symbol corresponding to the time domain position in the first time period is smaller, and conversely, the time domain position is late to indicate that the number of the OFDM symbol corresponding to the time domain position in the first time period is larger.

One implementation manner of the method 3 may be that the terminal device determines the first SRS from one or more SRSs actually to be transmitted in the first time period. Still taking fig. 5 as an example, the time domain position of SRS0 is symbol 8, the time domain position of SRS1 is symbol 11, the time domain position of SRS2 is symbol 11, the time domain position of SRS3 is symbol 10, and the time domain position of SRS4 is symbol 13. On slot i, since the time domain position of SRS0 is earlier than the time domain positions of SRS1 and SRS2, the priority of SRS0 is higher than the priority of SRS1 and SRS2, and the terminal device determines the first SRS on slot i to be SRS 0. On the slot i + x, since the time domain position of the SRS3 is earlier than the time domain position of the SRS4, the terminal device determines the first SRS on the slot i + x to be the SRS 3.

Another specific implementation manner of the mode 3 may be that the terminal device determines the first SRS in the first time period according to the time domain location information of all the at least one SRS. At this time, the first SRS determined by the terminal device includes an SRS that is not transmitted in the first time period. For example, still taking fig. 5 as an example, the time domain position of SRS0 is symbol 8, the time domain position of SRS1 is symbol 11, the time domain position of SRS2 is symbol 11, the time domain position of SRS3 is symbol 10, and the time domain position of SRS4 is symbol 13. On slot i + x, although the terminal device would only transmit SRS3 and SRS4, according to the above preconfigured rules, the terminal device still determines the first SRS on slot i + x to be SRS 0.

It is to be understood that the preconfigured rule may be that the earlier the time domain position of the at least one SRS in the first time period is, the lower the priority is, and the later the time domain position is, the higher the priority is. The embodiments of the present invention are not particularly limited.

In mode 4, the terminal device determines the first SRS according to the identifier information of the at least one SRS included in the first configuration information. For example, the terminal device obtains a preconfigured rule, which may be that the smaller the identification information of the at least one SRS is, the higher the priority is, the larger the identification information is, and the lower the priority is. The terminal device may determine a first SRS from the plurality of SRS over the first time period in a high-to-low (or low-to-high) priority manner.

One implementation manner of the method 4 may be that the terminal device determines the first SRS from one or more SRSs actually to be transmitted in the first time period. Still taking fig. 5 as an example, it is assumed that the identification information of the SRS0 is 0 (for example, the identification or index is equal to 0), the identification information of the SRS1 is 1, the identification information of the SRS2 is 2, the identification information of the SRS3 is 3, and the identification information of the SRS4 is 4. At the slot i, since the identification information of the SRS0 is smaller than the identification information of the SRS1 and the SRS2, the priority of the SRS0 is higher than the priority of the SRS1 and the SRS2, and the terminal device determines that the first SRS at the slot i is the SRS 0. At the slot i + x, since the identification information for the SRS3 is smaller than that of the SRS4, the terminal device determines the first SRS at the slot i + x as the SRS 3.

Another specific implementation manner of the manner 4 may be that the terminal device determines the first SRS in the first time period according to the identification information of all the at least one SRS. At this time, the first SRS determined by the terminal device includes an SRS that is not transmitted in the first time period. For example, still taking fig. 5 as an example, it is assumed that the identification information of the SRS0 is 0 (for example, the identification or index is equal to 0), the identification information of the SRS1 is 1, the identification information of the SRS2 is 2, the identification information of the SRS3 is 3, and the identification information of the SRS4 is 4. On slot i + x, although the terminal device would only transmit SRS3 and SRS4, according to the above preconfigured rules, the terminal device still determines the first SRS on slot i + x to be SRS 0.

It is to be understood that the preconfigured rule may be that the smaller the identification information of the SRS is, the lower the priority is, and the larger the identification information is, the higher the priority is. The embodiments of the present invention are not particularly limited.

When the identification information of the at least one SRS has the same priority or does not specify a priority, the first SRS may be all of the at least one SRS having the same priority or not specifying a priority.

Each preconfigured rule in modes 1 to 4 may be fixed in the protocol or sent to the terminal device via the access network device. When the preconfigured rule is sent to the terminal device through the Access network device, in an implementation manner, the terminal device may receive the preconfigured rule through a Radio Resource Control (RRC) layer message, a Media Access Control (MAC) layer message, or a physical layer message. The RRC layer message may be a system broadcast message, or the RRC layer message may be a dedicated RRC message. The invention is not limited.

In mode 5, the terminal device determines that the first SRS includes all the at least one SRS in the first configuration information. For example, still taking fig. 5 as an example, the first SRS includes SRS0 to SRS4 in slot i, slot i + x, slot i + y, and slot i + z.

Mode 6, the terminal device determines that the first SRS over the first time period includes one or more SRSs that are actually to be transmitted over the first time period. For example, still taking fig. 5 as an example, in the slot i, the first SRS includes SRS0 to SRS3, in the slot i + x, the first SRS includes SRS3 to SRS4, and in the slot i + z, the first SRS includes SRS0 to SRS 4.

Mode 7, the terminal device autonomously determines the first SRS over the first time period.

Two or more of the above-described embodiments 1 to 4 may be used in combination. For example, the terminal device determines, according to the mode 1, M SRSs with the highest priority from at least one SRS included in the first configuration information, and then determines, according to the mode 2, N SRSs with the highest priority from the M SRSs, where the first SRS includes the N SRSs. Wherein M and N are positive integers, and M is more than or equal to N and more than or equal to 1. For another example, the terminal device determines, according to the mode 2, M SRSs with the highest priority from at least one SRS included in the first configuration information, then determines, according to the mode 3, N SRSs with the highest priority from the M SRSs, and then determines, according to the mode 4, K SRSs with the highest priority from the N SRSs, where the first SRS includes the K SRSs. Wherein M, N and K are positive integers, and M is more than or equal to N and more than or equal to K is more than or equal to 1. The invention is not limited to the specific combination. The present invention does not limit the application priority of the modes 1 to 4 in the case of specific combinations. When the first SRS is determined by using two or more combinations of the modes 1 to 4, if the number of the determined SRSs is greater than 0 after the ith application of one of the modes 1 to 4 according to the application priorities of the modes 1 to 4, but the number of the determined SRSs is equal to 0 after the (i + 1) th application of one of the modes 1 to 4, the terminal device determines that the first SRS is determined as the ith SRS, and i is a positive integer. For example, assuming that the priorities in the modes 1 to 4 are sequentially decreased, that is, the priority in the mode 1 is the highest, and the priority in the mode 4 is the lowest, if the number of the SRS is 2 after the mode 2 is applied (i is 2), but the number of the SRS is 0 after the mode 3 is applied (i is 3), the terminal device determines that the first SRS is 2 SRS after the mode 2 is applied.

When the at least one SRS is replaced with at least one group of SRS, the first SRS comprises a first SRS group. The determination method is similar to the determination of the first SRS, and is not repeated.

In one implementation, the processor 201 in the terminal device may be configured to determine the first SRS.

Step S104, the terminal equipment determines the power headroom information of the frequency domain resource in the first time period.

When the frequency domain resources are configured to transmit a physical channel (such as PUSCH and/or PUCCH) and transmit at least one SRS (i.e. on the frequency domain resources, the terminal device may transmit SRS at a first time and transmit information on the physical channel), the terminal device may determine information of one or more combinations of first type power headroom and fifth type power headroom information at the following first time period.

First type of power headroom information, the terminal device determines one or more first power headroom information. The first power headroom information is a first maximum transmission power (denoted as P) of the terminal equipment in the frequency domain resource_cmaxC, c is an identifier of frequency domain resources) and a power difference of a second SRS transmitted by the terminal device, where the second SRS includes one of the at least one SRS included in the first SRS. For example, taking fig. 5 as an example, assuming that the first SRS on the slot i is determined to be the SRS0 and the SRS1 according to the above manner of determining the first SRS, the terminal device determines 2 pieces of first power headroom information, which are respectively denoted as PH1 and PH 2. Wherein PH1 is P_cmax,cPower to transmit SRS0, PH2 ═ P_cmax,c-power of transmitting SRS 1. At this time, the SRS0 and the SRS1 may be actually transmitted at the slot i. Thus, the power of the transmitted SRS0 can be the power of the actual transmitted SRS0, or the estimated transmitted SRS0, the power of the transmitted SRS1 can be the power of the actual transmitted SRS1, or the estimated work of the transmitted SRS1And (4) rate. For another example, assuming that the first SRS on the slot i + x is determined to be the SRS0 and the SRS3 according to the above manner of determining the first SRS, the terminal device determines 2 pieces of first power headroom information, which are respectively denoted as PH1 and PH 2. Wherein PH1 is P_cmax,cPower to transmit SRS0, PH1 ═ P_cmax,c-power of transmitting SRS 3. At this time, at the slot i + x, the SRS0 is not actually transmitted, and the SRS3 is actually transmitted. Therefore, the power of transmitting the SRS0 is determined according to the Reference Format (Reference Format), and the power of transmitting the SRS3 may be the power of actually transmitting the transmitted SRS3 or the estimated power of transmitting the SRS 3. It should be noted that the first maximum transmission power of the terminal device in the frequency domain resource is determined by the terminal device according to at least one of a maximum transmission power capability, a maximum transmission power of the frequency domain resource notified by the access network device, and a power backoff. For example, the terminal power capability is 23 decibel-milliwatt (dBm), the maximum transmission power of the frequency domain resource notified by the access network device is 20dBm, and the power backoff is 2dBm, then the first maximum transmission power of the terminal device in the frequency domain resource is equal to 18 dBm. The following various first maximum transmission powers are similar and will not be described in detail.

When determining the first type of power headroom information, the first maximum transmission power of the terminal device in the frequency domain resource may be the first maximum transmission power of the terminal device. This is the simplest way. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of the terminal device in the frequency domain resource for sending an SRS. The PH calculated in this manner is more accurate. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of each SRS in the at least one SRS that is sent by the terminal device in the frequency domain resource, that is, each SRS in the at least one SRS included in the first configuration information is associated with one maximum transmission power, and the first maximum transmission powers associated with different SRSs may be the same or different. For example, when calculating PH1, the first maximum transmission power associated with transmitting SRS0 is used, and when calculating PH2, the first maximum transmission power associated with transmitting SRS1 is used. This way the calculated PH is more accurate.

And second type of power headroom information, the terminal device determines one or more second power headroom information. The second power headroom information is a difference between a first maximum transmission power of the terminal device in the frequency domain resource and a power of the terminal device on a first physical channel. When the physical channel includes a plurality of channels, the first physical channel is one of the plurality of channels, and when the physical channel includes one channel, the first physical channel is the channel. For example, assuming that the physical channel includes PUSCH on the frequency domain resources, the terminal device determines 1 piece of power headroom information. For another example, assuming that the physical channel includes PUSCH and PUCCH on the frequency domain resources, the terminal device determines 2 pieces of power headroom information.

When determining the second type of power headroom information, the first maximum transmission power of the terminal device in the frequency domain resource may be the maximum transmission power of the terminal device. This is the simplest way. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of a transmission physical channel of the terminal device in the frequency domain resource. The PH calculated in this manner is more accurate. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of each of at least one channel included in the physical channel for sending by the terminal device in the frequency domain resource, and the first maximum transmission powers associated with different channels may be the same or different. For example, when calculating the PH of the PUSCH, the maximum transmission power associated with the transmission PUSCH is used, and when calculating the PH of the PUCCH, the first maximum transmission power associated with the transmission PUCCH is used. This way the calculated PH is more accurate.

And the terminal equipment determines third power headroom information. The third power headroom information is a difference between a first maximum transmission power of the terminal device in the frequency domain resource and a power of the terminal device for transmitting the first SRS. For example, taking fig. 5 as an example, assuming that the first SRS on the slot i is determined to be the SRS0 and the SRS1 according to the above manner of determining the first SRS, the terminal device may determine the third power headroom information as the first maximum transmission power of the terminal device in the frequency domain resource- (the power of transmitting the SRS0 + the power of transmitting the SRS 1). At this time, the SRS0 and the SRS1 may be actually transmitted at the slot i. Thus, the power of the transmitted SRS0 can be the power of the actual transmitted SRS0, or the estimated transmitted SRS0, and the power of the transmitted SRS1 can be the power of the actual transmitted SRS1, or the estimated transmitted SRS 1. For another example, assuming that the first SRS on the slot i + x is determined to be the SRS0 and the SRS3 according to the above manner of determining the first SRS, the terminal device determines that the third power headroom information may be the first maximum transmission power of the terminal device in the frequency domain resource- (the power of transmitting the SRS0 + the power of transmitting the SRS 3). At this time, at the slot i + x, the SRS0 is not actually transmitted, and the SRS3 is actually transmitted. Therefore, the power of transmitting the SRS0 is determined according to the Reference Format (Reference Format), and the power of transmitting the SRS3 may be the power of actually transmitting the SRS3 or the estimated power of transmitting the SRS 3.

When determining the third type of power headroom information, the first maximum transmission power of the terminal device in the frequency domain resource may be the first maximum transmission power of the terminal device. This is the simplest way. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of the terminal device in the frequency domain resource for sending an SRS. The PH calculated in this manner is more accurate.

And fourth power headroom information, wherein the terminal equipment determines the fourth power headroom information. The fourth power headroom information is a difference between a first maximum transmission power of the terminal device in the frequency domain resource and a power of the terminal device on the physical channel. For example, assuming that the physical channel includes PUSCH on the frequency domain resource (i.e., the terminal device cannot simultaneously transmit PUCCH and PUSCH on the frequency domain resource), the terminal device determines that the fourth power headroom information is the first maximum transmission power of the frequency domain resource — the power of the terminal device on the PUSCH. The power at the PUSCH may be the power at which the PUSCH is actually transmitted, or the estimated power at which the PUSCH is transmitted, if the PUSCH is actually transmitted in the first period of time. The power on the PUSCH is a power determined according to a Reference Format (Reference Format) if the PUSCH is not actually transmitted for the first time period. For another example, assuming that the physical channel includes PUSCH and PUCCH on the frequency domain resource (i.e., the terminal device may transmit PUCCH and PUSCH simultaneously on the frequency domain resource), the terminal device determines the fourth power headroom information as the first maximum transmission power of the frequency domain resource- (power of the terminal device on PUSCH + power of the terminal device on PUCCH). If the PUSCH and PUCCH are actually transmitted in the first period, the power in the PUSCH and PUCCH may be the power at which the PUSCH and PUCCH are actually transmitted, or the estimated power at which the PUSCH and PUCCH are transmitted. If the PUSCH or PUCCH is not actually transmitted in the first time period, the power on the PUSCH or PUCCH is a power determined according to a Reference Format (Reference Format). If the PUSCH and PUCCH are not actually transmitted for the first time period, the power on the PUSCH and PUCCH is a power determined according to a Reference Format (Reference Format).

In determining the fourth power headroom information, the first maximum transmission power of the terminal device in the frequency domain resource may be the first maximum transmission power of the terminal device. This is the simplest way. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of a transmission physical channel of the terminal device in the frequency domain resource. The PH calculated in this manner is more accurate.

And the terminal equipment determines fifth power headroom information. And fifth power headroom information is a difference between a first maximum transmission power of the terminal device in the frequency domain resource and a first transmission power, where the first transmission power is a sum of a power of the terminal device for transmitting the first SRS and a power of the terminal device on the physical channel. The specific calculation method is similar to the foregoing method, and is not described herein again.

When determining the fifth type of power headroom information, the first maximum transmission power of the terminal device in the frequency domain resource may be the first maximum transmission power of the terminal device. This is the simplest way.

The first type of power headroom information and the second type of power headroom information are the most detailed among the various types of power headroom information, but the signaling overhead is the largest when reporting the power headroom information. The third power headroom information and the fourth power headroom information are more detailed, and the signaling overhead is smaller. The fifth power headroom information signaling overhead is minimal.

One possible combination of the above-mentioned various types of power headroom information is a combination of the first type of power headroom information and the second type of power headroom information. The combined mode can realize the reporting of the most detailed power headroom information. But the amount of information is relatively large. Another possible combination is that the third power headroom information is combined with the fourth power headroom information. The combined mode can realize reporting more detailed power headroom information. But the amount of information is relatively small.

When the frequency domain resource is configured to be unable to transmit a physical channel (such as PUSCH and/or PUCCH) and only to transmit at least one SRS, the terminal device may determine one or more of the first type of power headroom information and the third type of power headroom information.

The terminal device may determine which kind of power headroom information, or which kinds of power headroom information, according to a preconfigured rule. For example, the preconfigured rule may be to determine the first type of power headroom information, or determine the first type of power headroom information and the second type of power headroom information, or determine the third type of power headroom information and the fourth type of power headroom information, or determine the fifth type of power headroom information, or determine the first type of power headroom information and the third type of power headroom information, and so on. For example, the preconfigured rule may be determining the kind of the power headroom information according to whether the second configuration information is received. When the terminal device receives the second configuration information, the terminal device determines the first type of power headroom information and the second type of power headroom information, or determines the third type of power headroom information and the fourth type of power headroom information. And when the terminal equipment does not receive the second configuration information, the terminal equipment determines fifth type of power headroom information.

The pre-configured rules may be fixed in the protocol or sent to the terminal device via the access network device. When the preconfigured rule is sent to the terminal device through the Access network device, in an implementation manner, the terminal device may receive the preconfigured rule through a Radio Resource Control (RRC) layer message, a Media Access Control (MAC) layer message, or a physical layer message. The RRC layer message may be a system broadcast message, or the RRC layer message may be a dedicated RRC message. The invention is not limited.

In one implementation, the terminal device or a MAC layer entity of the terminal device may obtain at least one of the first kind of power headroom information to the fifth kind of power headroom information from a physical layer. The terminal device or the MAC layer entity of the terminal device may also obtain the first maximum transmit power of the frequency domain resource from the physical layer. The terminal device or the MAC layer entity of the terminal device may further obtain, from the physical layer, a first maximum transmission power of the frequency domain resource for transmitting the SRS and/or a first maximum transmission power for transmitting the physical channel. The terminal device or the MAC layer entity of the terminal device may also obtain a reference format of the physical channel or the SRS from the physical layer when the physical channel or the SRS is not actually transmitted in the first time period.

In one implementation, the processor 201 in the terminal device may be configured to determine the power headroom information.

Step S105, the terminal device sends power headroom information to the access network device, and correspondingly, the access network device receives the power headroom information sent by the terminal device.

The power headroom information includes one or more of the one or more first power headroom information, the one or more second power headroom information, the third power headroom information, the fourth power headroom information, and the fifth power headroom information determined in step S104.

Further, the power headroom information may further include a first maximum transmission power of the terminal device in the frequency domain resource. The first maximum transmit power of the terminal device at the frequency domain resource may be the first maximum transmit power of the terminal device. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of the terminal device in the frequency domain resource for sending an SRS. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of each SRS in the at least one SRS that is sent by the terminal device in the frequency domain resource, that is, each SRS in the at least one SRS included in the first configuration information is associated with one first maximum transmission power, and the first maximum transmission powers associated with different SRSs may be the same or different. For example, when calculating PH1, the maximum transmission power associated with transmitting SRS0 is used, and when calculating PH2, the first maximum transmission power associated with transmitting SRS1 is used. The first maximum transmission power of the terminal device in the frequency domain resource may also be a first maximum transmission power of a transmission physical channel of the terminal device in the frequency domain resource.

The following describes contents that may be included in the terminal device transmitting power headroom information to the access network device. It should be noted that, in the following various contents, information P is included to instruct the terminal device whether to perform power backoff when determining PH, V is used to instruct the PH value to be based on actual transmission (Real transmission) or Reference Format (Reference Format), and R represents a reserved bit. The dashed boxes indicate that the content is optional. The information P, V and PH may appear in pairs, as shown in fig. 6 to 11, or only PH, without P and/or V. In addition, the PHs in the content 1 to the content 6 may occupy 6 bits, and as shown in fig. 6 to fig. 11, other numbers of bits, for example, 7 bits, may be occupied. The present invention only describes the content included in the power headroom information, and does not limit the number of bits occupied by the PH.

Content 1, comprising the following information:

the one or more first power headroom information determined in step S104 may be Type3, or may be a new Type, which is not limited by the present invention. Wherein the one or more first power headroom information may be arranged in order of small to large (or large to small) identification information of at least one SRS included in the first SRS. Fig. 6 gives a possible example of content 1. As shown in fig. 6, PH (SRS0) to PH (srsn) indicate first power headroom information corresponding to n SRSs included in the first SRS. Optionally, the content 1 further includes a first maximum transmission power of the terminal device on the frequency domain resource. Further, content 1 may instead have a first maximum transmit power associated with it after each PH, e.g., content 1 may include, in order, { PH (SRS0), Pcmax SRS0}, { PH (SRS1), Pcmax SRS1}, etc. The present invention does not limit the order of the one or more first power headroom information.

Content 2, including the following information:

the third power headroom information determined in step S104 may be Type3 or a new Type, which is not limited by the present invention. Fig. 7 gives a possible example of content 2. As shown in fig. 7, ph (SRS) indicates third power headroom information of the first SRS. Optionally, the content 2 further includes a first maximum transmission power of the terminal device on the frequency domain resource.

Content 3, including the following information:

one second power headroom information determined in step S104, wherein the second power headroom information may be Type1, i.e., power headroom information when the physical channel is a PUSCH channel. The second power headroom information may be power headroom information of the PUCCH, i.e., power headroom information when the physical channel is a PUCCH channel. Fig. 8 gives a possible example of content 3. As shown in fig. 8, PH (Type1) indicates second power headroom information of the PUSCH. Optionally, the content 3 further includes a first maximum transmission power of the terminal device on the frequency domain resource. Content 4, including the following information:

one second power headroom information determined in step S104, wherein the second power headroom information is Type2, i.e., power headroom information when the physical channel is a PUSCH and PUCCH channel. The second power headroom information may be power headroom information of the PUCCH, i.e., power headroom information when the physical channel is a PUCCH channel. Fig. 9 gives a possible example of content 4. As shown in fig. 9, PH (Type2) represents second power headroom information of PUSCH and PUCCH. Optionally, the content 4 further includes a first maximum transmission power of the terminal device on the frequency domain resource. Content 5, including the following information:

fifth power headroom information determined in step S104. Fig. 10 gives a possible example of content 5. As shown in fig. 10, PH (SRS + PUSCH) indicates fifth power headroom information of the first SRS and the physical channel. Wherein the physical channel is a PUSCH. Optionally, the content 5 further includes a first maximum transmission power of the terminal device on the frequency domain resource.

Content 6, including the following information:

fifth power headroom information determined in step S104. Fig. 11 gives a possible example of content 6. As shown in fig. 11, PH (SRS + PUSCH + PUCCH) indicates fifth power headroom information of the first SRS and a physical channel when the physical channel is a PUSCH and a PUSCH. Optionally, the content 6 further includes a first maximum transmission power of the terminal device on the frequency domain resource. The power headroom information determined by the terminal device may include one of the above-described contents 1 to 6. Alternatively, the power headroom information determined by the terminal device may include a combination of a plurality of items of the above-described contents 1 to 6. Combinations of the items are described below. It should be noted that, the present invention does not limit the sequence of the contents included in the following combinations appearing in the power headroom information.

One possible combination 1 is content 2+ content 3. In this case, the power headroom information represents power headroom information when the SRS and the PUSCH are simultaneously transmitted on the frequency domain resources. Optionally, in the combination manner, if the maximum transmission powers in the content 2 and the content 3 are the same, the combination may include only one maximum transmission power, and the one maximum transmission power is located at the end of the combination, so that signaling overhead may be saved.

Another possible combination 2 is content 3+ content 5. In this case, the power headroom information represents power headroom information when the SRS and the PUSCH are simultaneously transmitted on the frequency domain resources. Optionally, in the combination manner, if the maximum transmission powers in the content 3 and the content 5 are the same, the combination may include only one maximum transmission power, and the one maximum transmission power is located at the end of the combination, so that signaling overhead may be saved.

Another possible combination 3 is content 2+ content 3+ content 5. In this case, the power headroom information represents power headroom information when the SRS and the PUSCH are simultaneously transmitted on the frequency domain resources. In this case, the power headroom information represents power headroom information when the SRS and the PUSCH are simultaneously transmitted on the frequency domain resources. Compared with the combination mode 1, the power headroom information is more accurate, but the signaling overhead is also larger. Optionally, in the combination manner, if the maximum transmission powers in the content 2 and the content 3 are the same, the combination may include only one maximum transmission power, and the one maximum transmission power is located at the end of the combination, so that signaling overhead may be saved.

Another possible combination 4 is content 4+ content 6. In this case, the power headroom information represents power headroom information when the SRS, the PUSCH, and the PUCCH are simultaneously transmitted on the frequency domain resource. Optionally, in the combination manner, if the maximum transmission powers in the content 4 and the content 6 are the same, the combination may include only one maximum transmission power, and the one maximum transmission power is located at the end of the combination, so that signaling overhead may be saved.

Another possible combination 5 is content 3+ content 4+ content 6. In this case, the power headroom information represents power headroom information when the SRS, the PUSCH, and the PUCCH are simultaneously transmitted on the frequency domain resource. Optionally, in the combination manner, if the maximum transmission power in the content 3, the content 4 and the content 6 is the same, the combination may include only one maximum transmission power, and the one maximum transmission power is located at the end of the combination, so that the signaling overhead may be saved. Compared with the combination mode 4, the power headroom information is more accurate, but the signaling overhead is also larger.

Another possible combination 6 is content 2+ content 3+ content 4+ content 6. In this case, the power headroom information represents power headroom information when the SRS, the PUSCH, and the PUCCH are simultaneously transmitted on the frequency domain resource. Optionally, in the combination mode, if the maximum transmission power in the content 2, the content 3, the content 4 and the content 6 is the same, the combination may include only one maximum transmission power, and the one maximum transmission power is located at the end of the combination, so that signaling overhead may be saved. Compared with the combination mode 4, the power headroom information is more accurate, but the signaling overhead is also larger.

Another possible combination 7 is content 1+ content 2. In this case, the power headroom information represents power headroom information when the SRS is simultaneously transmitted on the frequency domain resources. If the maximum transmit power in content 1 and content 2 are the same, then only one maximum transmit power may be included in the combination, which is located at the end of the combination, which may save signaling overhead.

The power headroom information in step S105 may be information obtained by quantizing the power headroom calculation value, and the specific quantization means may be to quantize the power headroom in a uniform step size or a non-uniform step size within a certain value interval.

It should be noted that the above possible combinations are only exemplary, and any combination capable of achieving the object of the present invention is within the scope of the embodiments of the present invention.

Optionally, the terminal device may report power headroom information including one of the content 1 to the content 6 according to a preconfigured rule, or report power headroom information including a combination of a plurality of contents. For example, when the terminal device obtains the second configuration information, the second terminal device reports the power headroom information including the content 1 and/or the content 2 and/or the possible combination manner including the content 1 and/or the content 2. For another example, when the terminal device does not obtain the second configuration information, the power headroom information reported by the second terminal device does not include a possible combination manner of content 1 and/or content 2. For another example, the access network device sends third indication information to the terminal device, where the third indication information is used to indicate which content or combination of contents is reported by the terminal device.

Optionally, the power headroom information further includes first indication information, where the first indication information is used to indicate identification information of one SRS of at least one SRS included in the first SRS, and the first indication information is associated with the first power headroom information; when the first SRS only includes a part of at least one SRS configured in the first configuration information, the terminal device reports the identification information of the SRS corresponding to the first power headroom information. At this time, the access network device understands the first SRS consistently with the terminal device, which is beneficial to better performing resource allocation and/or power control.

Alternatively, if the terminal device is configured with a plurality of frequency domain resources, the terminal device may determine power headroom information on each frequency domain resource. Further, the power headroom information further includes second indication information, where the second indication information is used to indicate identification information of the frequency domain resource. One implementation of the second indication information is in the form of a bitmap. For example, the power headroom information includes a bitmap, and each bit in the bitmap is associated with a frequency domain resource. And the bit value in the bitmap is 0, and represents that the terminal equipment reports the power headroom information of the frequency domain resource associated with the bit.

The terminal device may send the power headroom information to the access network device through a MAC layer message or an RRC layer message.

In one implementation, the transceiver 204 in the terminal device may be used to transmit the power headroom information, or the processor 201 in the terminal device controls the transceiver 204 to transmit the power headroom information.

In one implementation, the transceiver 302 in the access network device may be configured to receive the power headroom information, or the processor 301 in the access network device controls the transceiver 302 to receive the power headroom information.

Embodiments of the present invention also provide an apparatus (e.g., an integrated circuit, a wireless device, a circuit module, etc.) for implementing the above method. An apparatus implementing the description herein may be a standalone device or may be part of a larger device. The device may be (i) a free-standing IC; (ii) a set of one or more ICs, which may include memory ICs for storing data and/or instructions; (iii) RFICs, such as RF receivers or RF transmitter/receivers; (iv) an ASIC, such as a mobile station modem; (v) a module that may be embedded within other devices; (vi) a receiver, cellular telephone, wireless device, handset, or mobile unit; (vii) others, and so forth.

The method and the device provided by the embodiment of the invention can be applied to terminal equipment or network equipment (which can be collectively referred to as wireless equipment). The terminal device or network device or wireless device may include a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a Central Processing Unit (CPU), a Memory Management Unit (MMU), and a memory (also referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, in the embodiment of the present invention, the specific structure of the execution main body of the method is not limited in the embodiment of the present invention, as long as the communication can be performed by the method for transmitting a signal according to the embodiment of the present invention by running a program in which a code of the method of the embodiment of the present invention is recorded, for example, the execution main body of the method for wireless communication of the embodiment of the present invention may be a terminal device or a network device, or a functional module capable of calling the program and executing the program in the terminal device or the network device.

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

It should be understood that, in various embodiments of the present invention, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented as or make a contribution to the prior art, or may be implemented as a software product, which is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or an access network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only a specific implementation of the embodiments of the present invention, but the scope of the embodiments of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the embodiments of the present invention, and all such changes or substitutions should be covered by the scope of the embodiments of the present invention.

Claims

1. A method of wireless communication, comprising:

the method comprises the steps that terminal equipment obtains first configuration information, wherein the first configuration information is used for configuring at least one Sounding Reference Signal (SRS) of frequency domain resources;

the terminal device determines a first SRS in a first time period of the frequency domain resources according to the first configuration information, wherein the first SRS comprises one or more of the at least one SRS;

the terminal equipment determines power headroom information of the frequency domain resource according to the first SRS and a physical channel of the frequency domain resource in the first time period;

the terminal device transmits the power headroom information over the first time period.

2. The method according to claim 1, wherein the physical channel comprises a physical uplink shared channel and/or a physical uplink control channel.

3. The method of claim 1, wherein the first configuration information comprises at least one of:

indication information for indicating a transmission scheme of the at least one SRS, wherein the transmission scheme comprises: an aperiodic transmission mode, a semi-static transmission mode, or a periodic transmission mode;

indication information for indicating a function of the at least one SRS, wherein the function includes: for CodeBook (CodeBook) based transmission, and/or for non-CodeBook based transmission, and/or for SRS switching, and/or for beam management;

time domain location information of the at least one SRS;

identification information of the at least one SRS;

identification information of the frequency domain resource.

4. The method of claim 3, wherein the determining, by the terminal device, the first SRS according to the first configuration information comprises:

the terminal equipment determines the first SRS according to the transmission mode of the at least one SRS; and/or the presence of a gas in the gas,

the terminal equipment determines the first SRS according to the function of the at least one SRS; and/or the presence of a gas in the gas,

the terminal equipment determines the first SRS according to the time domain position of the at least one SRS in the first time period; and/or the presence of a gas in the gas,

the terminal equipment determines the first SRS according to the identification information of the at least one SRS; alternatively, the first and second electrodes may be,

the first SRS includes all of the at least one SRS.

5. The method of claim 4, wherein the power headroom information comprises:

one or more first power headroom information, wherein the first power headroom information is a difference between a first maximum transmission power of the terminal device in the frequency domain resource and a power at which the terminal device transmits a second SRS, and the second SRS includes one of at least one SRS included in the first SRS; and the number of the first and second groups,

one or more second power headroom information, wherein the second power headroom information is a difference between a first maximum transmission power of the terminal device on the frequency domain resource and a power of the terminal device on a first physical channel, and when the physical channel includes a plurality of channels, the first physical channel is one of the plurality of channels, and when the physical channel includes one channel, the first physical channel is the channel.

6. The method of claim 5, wherein the power headroom information comprises:

third power headroom information, wherein the third power headroom information is a difference between a first maximum transmission power of the frequency domain resource of the terminal device and a power of the terminal device for transmitting the first SRS; and the number of the first and second groups,

fourth power headroom information, wherein the fourth power headroom information is a difference between a first maximum transmission power of the terminal device on the frequency domain resource and a power of the terminal device on the physical channel.

7. The method of claim 6, wherein the power headroom information comprises:

fifth power headroom information, where the fifth power headroom information is a difference between a first maximum transmission power of the terminal device in the frequency domain resource and a first transmission power, and the first transmission power is a sum of a power at which the terminal device transmits the first SRS and a power on the physical channel.

8. The method of claim 7, further comprising:

the terminal device obtains second configuration information, where the second configuration information is used to indicate:

the terminal equipment receives power control commands of a physical channel and an SRS respectively; or

The terminal equipment receives a physical channel on the frequency domain resource and a power control command of an SRS on the frequency domain resource respectively; or

The terminal equipment is used for sending a second maximum transmission power of the SRS and a second maximum transmission power on the physical channel, wherein the second maximum transmission power used for sending the SRS is different from the second maximum transmission power on the physical channel;

the terminal device is configured to transmit, on the frequency domain resource, a second maximum transmission power of the SRS and a second maximum transmission power of the physical channel on the frequency domain resource, where the second maximum transmission power of the SRS on the frequency domain resource is different from the second maximum transmission power of the physical channel.

9. The method of claim 5, wherein the power headroom information further comprises:

one or more first indication information, where the first indication information is used to indicate identification information of one SRS of at least one SRS included in the first SRS, and the first indication information is associated with the first power headroom information.

10. The method according to any of claims 5 to 9, wherein the power headroom information further comprises:

a first maximum transmit power of the terminal device at the frequency domain resource; and/or

The terminal equipment sends a first maximum transmission power of the first SRS; and/or

A first maximum transmit power of the terminal device on the physical channel; and/or

A first maximum transmit power of the terminal device; and/or the presence of a gas in the gas,

and second indication information for indicating the identification information of the frequency domain resource.

11. A method of wireless communication, comprising:

the method comprises the steps that access network equipment sends first configuration information to terminal equipment, wherein the first configuration information is used for configuring at least one Sounding Reference Signal (SRS) of frequency domain resources;

determining, by the access network device, a first SRS over a first time period of the frequency domain resources, the first SRS comprising one or more of the at least one SRS;

the access network device receives power headroom information of the frequency domain resource sent by the terminal device over the first time period, wherein the power headroom information is determined based on the first SRS and a physical channel of the frequency domain resource over the first time period.

12. The method according to claim 11, wherein the physical channel comprises a physical uplink shared channel and/or a physical uplink control channel.

13. The method of claim 11, wherein the first configuration information comprises at least one of:

time domain location information of the at least one SRS;

identification information of the at least one SRS;

identification information of the frequency domain resource.

14. The method of claim 13, wherein the determining, by the access network device, the first SRS comprises:

the access network equipment determines the first SRS according to the transmission mode of the at least one SRS; and/or the presence of a gas in the gas,

the access network equipment determines the first SRS according to the function of the at least one SRS; and/or the presence of a gas in the gas,

the access network equipment determines the first SRS according to the time domain position of the at least one SRS in the first time period; and/or the presence of a gas in the gas,

the access network equipment determines the first SRS according to the identification information of the at least one SRS; alternatively, the first and second electrodes may be,

the first SRS includes all of the at least one SRS.

15. The method of claim 14, wherein the power headroom information comprises:

16. The method of claim 15, wherein the power headroom information comprises:

17. The method of claim 16, wherein the power headroom information comprises:

18. The method of claim 17, further comprising:

the access network device sends second configuration information to the terminal device, where the second configuration information is used to indicate:

the access network equipment respectively sends power control commands of a physical channel and an SRS to the terminal equipment; or

The access network equipment respectively sends the physical channel on the frequency domain resource and the power control command of the SRS on the frequency domain resource to the terminal equipment; or

the terminal device is configured to transmit, on the frequency domain resource, a second maximum transmission power of the SRS and a second maximum transmission power of the SRS on the physical channel on the frequency domain resource, where the second maximum transmission power of the SRS on the frequency domain resource is different from the second maximum transmission power of the SRS on the physical channel on the frequency domain resource.

19. The method of claim 15, wherein the power headroom information further comprises:

20. The method according to any of claims 15 to 19, wherein the power headroom information further comprises:

21. A communications apparatus, comprising:

a processor and a transceiver coupled with the processor;

the processor is configured to obtain first configuration information, where the first configuration information is used to configure at least one sounding reference signal, SRS, of a frequency domain resource;

the processor is further configured to determine a first SRS over a first time period of the frequency domain resources according to the first configuration information, the first SRS comprising one or more of the at least one SRS;

the processor is further configured to determine power headroom information for the frequency domain resource based on the first SRS and a physical channel over the first time period of the frequency domain resource;

the transceiver is configured to transmit the power headroom information over the first time period.

22. The apparatus according to claim 21, wherein the physical channel comprises a physical uplink shared channel and/or a physical uplink control channel.

23. The apparatus of claim 21, wherein the first configuration information comprises at least one of:

time domain location information of the at least one SRS;

identification information of the at least one SRS;

identification information of the frequency domain resource.

24. The apparatus of claim 23, wherein the determining the first SRS according to the first configuration information comprises:

the processor is configured to determine the first SRS according to a transmission mode of the at least one SRS; and/or the presence of a gas in the gas,

the processor configured to determine the first SRS based on a function of the at least one SRS; and/or the presence of a gas in the gas,

the processor is configured to determine the first SRS according to a time domain position of the at least one SRS in the first time period; and/or the presence of a gas in the gas,

the processor is configured to determine the first SRS according to the identification information of the at least one SRS; alternatively, the first and second electrodes may be,

the first SRS includes all of the at least one SRS.

25. The apparatus of claim 24, wherein the power headroom information comprises:

one or more first power headroom information, wherein the first power headroom information is a difference between a first maximum transmission power of the apparatus in the frequency domain resources and a power at which the apparatus transmits a second SRS comprising one of the at least one SRS included by the first SRS; and the number of the first and second groups,

one or more second power headroom information, wherein the second power headroom information is a difference between a first maximum transmission power of the apparatus on the frequency domain resource and a power of the apparatus on a first physical channel, and when the physical channel comprises a plurality of channels, the first physical channel is one of the plurality of channels, and when the physical channel comprises one channel, the first physical channel is the channel.

26. The apparatus of claim 25, wherein the power headroom information comprises:

third power headroom information, wherein the third power headroom information is a difference between a first maximum transmission power of the apparatus in the frequency domain resource and a power at which the apparatus transmits the first SRS; and the number of the first and second groups,

fourth power headroom information, wherein the fourth power headroom information is a difference between a first maximum transmit power of the apparatus at the frequency domain resource and a power of the apparatus on the physical channel.

27. The apparatus of claim 26, wherein the power headroom information comprises:

fifth power headroom information, wherein the fifth power headroom information is a difference between a first maximum transmission power of the apparatus in the frequency domain resource and a first transmission power, and the first transmission power is a sum of a power at which the apparatus transmits the first SRS and a power on the physical channel.

28. The apparatus of claim 27, further comprising:

the processor is configured to obtain second configuration information, where the second configuration information is used to indicate:

the device receives power control commands of a physical channel and an SRS respectively; or

The apparatus receives power control commands of a physical channel on the frequency domain resources and an SRS on the frequency domain resources, respectively; or

The apparatus includes means for transmitting a second maximum transmit power for the SRS and a second maximum transmit power for the physical channel, wherein the second maximum transmit power for transmitting the SRS is different from the second maximum transmit power for the physical channel;

the apparatus is configured to transmit a second maximum transmit power of the SRS on the frequency domain resource and a second maximum transmit power on the physical channel on the frequency domain resource, wherein the second maximum transmit power for transmitting the SRS on the frequency domain resource is different from the second maximum transmit power on the physical channel on the frequency domain resource.

29. The apparatus of claim 25, wherein the power headroom information further comprises:

30. The apparatus according to any of claims 25 to 29, wherein the power headroom information further comprises:

a first maximum transmit power of the apparatus at the frequency domain resource; and/or

The apparatus transmits a first maximum transmit power of the first SRS; and/or

A first maximum transmit power of the apparatus on the physical channel; and/or

A first maximum transmit power of the apparatus; and/or the presence of a gas in the gas,

31. A communications apparatus, comprising:

a processor and a transceiver coupled with the processor;

the transceiver is configured to send first configuration information to a terminal device, where the first configuration information is used to configure at least one Sounding Reference Signal (SRS) of a frequency domain resource;

the processor configured to determine a first SRS over a first time period of the frequency domain resources, the first SRS comprising one or more of the at least one SRS;

the transceiver is further configured to receive power headroom information of the frequency domain resource, which is sent by the terminal device over the first time period, where the power headroom information is determined based on the first SRS and a physical channel of the frequency domain resource over the first time period.

32. The apparatus according to claim 31, wherein the physical channel comprises a physical uplink shared channel and/or a physical uplink control channel.

33. The apparatus of claim 31, wherein the first configuration information comprises at least one of:

time domain location information of the at least one SRS;

identification information of the at least one SRS;

identification information of the frequency domain resource.

34. The apparatus of claim 33, wherein the determining the first SRS comprises:

the first SRS includes all of the at least one SRS.

35. The apparatus of claim 34, wherein the power headroom information comprises:

one or more first power headroom information, wherein the first power headroom information is a difference between a maximum first transmission power of the frequency domain resource of the terminal device and a power of the terminal device for transmitting a second SRS, and the second SRS includes one of at least one SRS included in the first SRS; and the number of the first and second groups,

36. The apparatus of claim 35, wherein the power headroom information comprises:

37. The apparatus of claim 36, wherein the power headroom information comprises:

38. The apparatus of claim 37, further comprising:

the transceiver is configured to send second configuration information to the terminal device, where the second configuration information is used to indicate:

the transceiver respectively transmits power control commands of a physical channel and an SRS to the terminal equipment; or

The transceiver respectively transmits power control commands of a physical channel on the frequency domain resource and an SRS on the frequency domain resource to the terminal equipment; or

The terminal equipment is used for sending a second maximum transmission power of the SRS and a second maximum transmission power on the physical channel, wherein the second maximum transmission power used for sending the SRS is different from the second maximum transmission power on the physical channel; or

And the terminal equipment is used for sending a second maximum transmission power of the SRS on the frequency domain resource and a second maximum transmission power on the physical channel on the frequency domain resource, wherein the second maximum transmission power for sending the SRS is different from the second maximum transmission power on the physical channel.

39. The apparatus of claim 35, wherein the power headroom information further comprises:

40. The apparatus according to any of claims 35 to 39, wherein the power headroom information further comprises:

41. A communications apparatus, comprising:

a processor and a memory coupled with the processor;

the memory is to store instructions;

the processor is configured to read and execute the instructions in the memory, so that the communication device performs the method of any one of claims 1 to 20.

42. A processor-readable storage medium comprising instructions that when executed on a processor cause the processor to perform the method of any of claims 1 to 20.