CN112867129B

CN112867129B - Method and device for reporting and sending power headroom

Info

Publication number: CN112867129B
Application number: CN201911090002.3A
Authority: CN
Inventors: 陈岩; 彭炳光; 张茜
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2023-08-11
Anticipated expiration: 2039-11-08
Also published as: CN112867129A

Abstract

The application discloses a power headroom report sending method and device, which relate to the field of communication and are used for realizing that network equipment can reversely push out an MPR/P-MPR value according to PHR reported by terminal equipment in an FR2 scene. The power headroom reporting and sending method comprises the following steps: obtaining second indication information according to one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR and the first indication information, wherein the first indication information is used for indicating the preset transmitting power of the terminal equipment, the second indication information is used for indicating the maximum transmitting power of the terminal equipment, and the terminal equipment works in a frequency range 2; and reporting PHR by sending power headroom, wherein the PHR comprises second indication information and third indication information, and the third indication information is used for indicating that the second indication information is obtained by the correction value of the MPR and the first indication information or indicating that the second indication information is obtained by the P-MPR and the first indication information.

Description

Method and device for reporting and sending power headroom

Technical Field

The present application relates to the field of communications, and in particular, to a method and apparatus for reporting and sending a power headroom.

Background

When the terminal equipment receives and transmits data in a wireless mode, ionizing radiation can be generated on a human body under the action of an electromagnetic field. Various national authorities, such as the federal communications commission (federal communications commission, FCC) and the international non-ionizing radiation protection committee (international commission on non-ionizing radiation protection, ICNIRP) and the like, impose restrictions on radio frequency radiation from terminal equipment to avoid damage to the human body by ionizing radiation generated by the terminal equipment.

The fifth generation (the 5th generation,5G) communication protocol includes two Frequency Ranges (FR): FR1 and FR2, FR1 (also referred to as Sub 6G) refers to a frequency range below 6GHz, and FR2 (also referred to as millimeter wave (mmW)) refers to a frequency range above 6 GHz.

In general, the terminal equipment operating in FR1 uses electromagnetic wave absorption ratio (specific absorption rate, SAR) to evaluate the effect of ionizing radiation on the human body. Terminal equipment operating in FR2, due to the high frequency of electromagnetic waves, has a relatively poor penetration of electromagnetic waves, and the effect of ionizing radiation on the human body is generally evaluated with maximum permissible exposure (maximum permissible exposure, MPE).

In a wireless communication system (e.g., a 5G communication system), in order to avoid that ionizing radiation generated by a terminal device is too large to exceed regulatory requirements of various countries, a maximum output power back-off (max output power reduction, MPR) (i.e., P-MPR) of power management (power management) is used to limit a maximum transmission power of the terminal device, thereby reducing SAR or MPE of the terminal device to meet the regulatory requirements. The larger the P-MPR, the smaller the maximum transmit power of the terminal device.

The P-MPR is autonomously controlled by the terminal device, and if a larger P-MPR is set, radio link failure may occur, and the terminal device needs to perform procedures such as radio resource control (radio resource control, RRC) reestablishment. The frequency of radio link failure occurrence is more severe when the terminal equipment is operating in FR 2. For this purpose the R16 protocol is considering the enhancement of the power headroom report (power headroom report, PHR) function.

The PHR is used for periodically reporting, by the terminal device, a difference between the uplink channel estimation power and the maximum transmission power of the terminal device to the network device, so that the network device performs more suitable scheduling for the terminal device. The terminal device may indicate the maximum transmit power P of the terminal device to the network device via the PHR _CMAX A Power Headroom (PH) and a bit P, wherein the power headroom may be a maximum transmit power P _CMAX And the calculated transmit power of the physical uplink shared channel (physical uplink shared channel, PUSCH). And maximum transmission power P _CMAX May be based on MPR/P-MPR and maximum power P of terminal equipment _PowerClass The resulting bit P is used to indicate whether the indicated power backoff is dominated by P-MPR.

In the FR1 scenario, due to the maximum power P of the terminal device _PowerClass Is a determined value, so the network device can be based on P in PHR _CMAX The value of MPR/P-MPR is extrapolated. In the FR2 scenario, however, due to the maximum power P of the terminal device _PowerClass Is a range of values and not a determined value. The network device cannot rely on P in PHR _CMAX Reverse push-out MPR/P-MPR is a value.

Disclosure of Invention

The embodiment of the application provides a power headroom report sending method and device, which are used for realizing that network equipment can reversely push out an MPR/P-MPR value according to PHR reported by terminal equipment in an FR2 scene.

In a first aspect, a power headroom report sending method is provided, including: obtaining second indication information according to one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR and the first indication information, wherein the first indication information is used for indicating the preset transmitting power of the terminal equipment, the second indication information is used for indicating the maximum transmitting power of the terminal equipment, and the terminal equipment works in the frequency range 2. And reporting PHR by sending power headroom, wherein the PHR comprises second indication information and third indication information, and the third indication information is used for indicating that the second indication information is obtained by the correction value of the MPR and the first indication information or indicating that the second indication information is obtained by the P-MPR and the first indication information.

According to the power headroom report sending method provided by the embodiment of the application, second indicating information is obtained according to one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR and the first indicating information, wherein the first indicating information is used for indicating the preset transmitting power of the terminal equipment, the second indicating information is used for indicating the maximum transmitting power of the terminal equipment, and the terminal equipment works in the frequency range 2; and reporting PHR by sending power headroom, wherein the PHR comprises second indication information and third indication information, and the third indication information is used for indicating that the second indication information is obtained by the correction value of the MPR and the first indication information or indicating that the second indication information is obtained by the P-MPR and the first indication information. The preset transmitting power of the terminal equipment indicated by the first indicating information is known by the network equipment and the terminal equipment, and the maximum transmitting power of the terminal equipment calculated according to the first indicating information is the same, so that the understanding of the network equipment and the terminal equipment on the maximum transmitting power is consistent, and the MPR or the P-MPR can be accurately and reversely deduced from the PHR reporting. The network device can reversely deduce the value of the MPR/P-MPR according to the PHR reported by the terminal device under the FR2 scene.

In one possible implementation, the first indication information is a default value known to the terminal device and the network device, or the first indication information is determined according to a power level of the frequency range 2, or the first indication information is determined according to various combinations of carrier aggregation CA or dual connectivity DC.

In one possible embodiment, the method further comprises: and sending the first indication information. The first indication information may be a value specified by a protocol, or may be sent by the terminal device to the network device, so that the terminal device and the network device keep understanding of the first indication information consistent.

In one possible implementation, the first indication information is carried in radio resource control, RRC, signaling. The embodiment may carry the first indication information in RRC signaling.

In one possible implementation, the first indication information is carried in a user equipment UE capability report of RRC signaling. Specifically, the first indication information may be carried in UE capability report of RRC signaling.

In one possible embodiment, obtaining the second indication information according to the first indication information and one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR includes: the second indication information P is calculated according to the following formula _CMAX,f,c ：P _CMAX,f,c ＝P _{CMAX_ref} -MAX(xMPR _f,c ,P-MPR _f,c ) Wherein P is _{CMAX_ref} For the first indication information, xMPR _f,c For correction of MPR, P-MPR _f,c Is P-MPR.

A second aspect provides a power headroom report sending method, which is characterized in that the method includes: and reporting PHR (power headroom report), wherein the PHR comprises second indication information and third indication information, the second indication information is used for indicating the maximum transmission power of the terminal equipment, the third indication information is used for indicating that the second indication information is obtained by a correction value of the maximum output power back-off (MPR) and the first indication information, or the second indication information is obtained by power management maximum output power back-off (P-MPR) and the first indication information, and the first indication information is used for indicating the preset transmission power of the terminal equipment. And determining a correction value of the MPR or the P-MPR according to the second indication information and the third indication information.

In one possible embodiment, the method further comprises: and receiving first indication information. The first indication information may be a value specified by a protocol, or may be sent by the terminal device to the network device, so that the terminal device and the network device keep understanding of the first indication information consistent.

In one possible embodiment, determining MPR or P-MPR according to the second indication information and the third indication information comprises: the third indication information indicates that the second indication information is obtained by MPR and the first indication information, and the corrected value xMPR of MPR is calculated according to the following formula _f,c ：xMPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c Alternatively, the third indication information indicates that the second indication information is obtained from the P-MPR and the first indication information, and the P-MPR is calculated according to the following formula _f,c ：P-MPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c Wherein P is _{CMAX_ref} For the first indication information, P _CMAX,f,c Is the second indication information.

In a third aspect, there is provided a communication apparatus comprising: the processing module is configured to obtain second indication information according to one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR and the first indication information, where the first indication information is used to indicate a preset transmission power of the terminal device, the second indication information is used to indicate a maximum transmission power of the terminal device, and the terminal device operates in a frequency range 2. And the receiving and transmitting module is used for transmitting the power headroom report PHR, wherein the PHR comprises second indication information and third indication information, and the third indication information is used for indicating that the second indication information is obtained by the correction value of the MPR and the first indication information or indicating that the second indication information is obtained by the P-MPR and the first indication information.

In one possible implementation, the transceiver module is further configured to: and sending the first indication information.

In one possible implementation, the first indication information is carried in radio resource control, RRC, signaling.

In one possible implementation, the first indication information is carried in a user equipment UE capability report of RRC signaling.

In one possible implementation, the processing module is specifically configured to: the second indication information P is calculated according to the following formula _CMAX,f,c ：P _CMAX,f,c ＝P _{CMAX_ref} -MAX(xMPR _f,c ,P-MPR _f,c ) Wherein P is _{CMAX_ref} For the first indication information, xMPR _f,c For correction of MPR, P-MPR _f,c Is P-MPR.

In a fourth aspect, a communication apparatus is provided, including: and the receiving and transmitting module is used for receiving the power headroom report PHR, wherein the PHR comprises second indication information and third indication information, the second indication information is used for indicating the maximum transmitting power of the terminal equipment, the third indication information is used for indicating that the second indication information is obtained by the correction value of the maximum output power back-off (MPR) and the first indication information, or the second indication information is obtained by the power management maximum output power back-off (P-MPR) and the first indication information, and the first indication information is used for indicating the preset transmitting power of the terminal equipment. And the processing module is used for determining the correction value of the MPR or the P-MPR according to the second indication information and the third indication information.

In one possible implementation, the transceiver module is further configured to: and receiving first indication information.

In one possible implementation, the processing module is specifically configured to: the third indication information indicates that the second indication information is obtained by the correction value of the MPR and the first indication information, and the correction value xMPR of the MPR is calculated according to the following formula _f,c ：xMPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c Alternatively, the third indication information indicates that the second indication information is obtained from the P-MPR and the first indication information, and the P-MPR is calculated according to the following formula _f,c ：P-MPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c Wherein P is _{CMAX_ref} For the first indication information, P _CMAX,f,c Is the second indication information.

In a fifth aspect, there is provided a communications device comprising a processor, a memory and a transceiver, the processor being coupled to the memory, the processor, when executing a computer program or instructions in the memory, performing the method as in the first aspect and any of its embodiments.

In a sixth aspect, there is provided a communications device comprising a processor, a memory and a transceiver, the processor being coupled to the memory, the processor, when executing a computer program or instructions in the memory, performing a method as in the second aspect and any of its embodiments.

In a seventh aspect, a chip is provided, including: a processor and an interface for calling from a memory and running a computer program stored in the memory, performing the method of any of the first to second aspects and any of them.

In an eighth aspect, there is provided a computer readable storage medium having instructions stored therein which, when run on a computer or processor, cause the computer or processor to perform the method of any of the first to second aspects and any thereof.

In a ninth aspect, there is provided a computer program product comprising instructions which, when run on a computer or processor, cause the computer or processor to perform the method of any of the first to sixth aspects and any thereof.

In a tenth aspect, there is provided a communication system comprising a communication device as in the third aspect and a communication device as in the fourth aspect, or comprising a communication device as in the fifth aspect and a communication device as in the sixth aspect.

Technical effects of the third to tenth aspects may be described with reference to various possible embodiments of the first aspect.

Drawings

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

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 a network device according to an embodiment of the present application;

fig. 4 is a schematic diagram of a reporting structure of a PH MAC CE according to an embodiment of the present application;

fig. 5 is a schematic diagram of another reporting structure of a PH MAC CE according to an embodiment of the present application;

fig. 6 is a schematic diagram of a reporting structure of a PH MAC CE according to another embodiment of the present application;

fig. 7 is a flow chart of a power headroom report sending method according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 9 is a schematic diagram of a second communication device according to an embodiment of the present application.

Detailed Description

The embodiment of the application can be applied to a time division duplex (time division duplexing, TDD) scene and a frequency division duplex (frequency division duplexing, FDD) scene.

The embodiment of the application is described by referring to the scenario of the fifth generation (5th generation,5G) communication network in the wireless communication network, and it should be noted that the scheme in the embodiment of the application can also be applied to other wireless communication networks, for example, the sixth generation mobile communication system, and the corresponding names can also be replaced by the names of the corresponding functions in other wireless communication networks. The 5G mobile communication system related to the application comprises a non-independent Networking (NSA) 5G mobile communication system and/or an independent networking (SA) 5G mobile communication system.

The embodiment of the application can be applied to a long term evolution (long term evolution, LTE) system, such as a narrowband Internet of things (narrow band internet of things, NB-IoT) system, or can also be applied to an Advanced long term evolution (LTE-A) system. It is also applicable to other wireless communication systems such as global system for mobile communications (global system for mobile communication, GSM), mobile communication system (universal mobile telecommunications system, UMTS), code division multiple access (code division multiple access, CDMA) systems, and new network equipment systems.

As shown in fig. 1, a communication system 100 provided in an embodiment of the present application includes a network device 101 and terminal devices 102-107.

The terminal device according to the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem. The wireless terminals may communicate with one or more core networks via a radio access network (radio access network, RAN), which may be mobile terminals such as mobile phones (or "cellular" phones) and computers with mobile terminals, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access network. Such as User Equipment (UE), personal communication services (personal communication service, PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless local loop (wireless local loop, WLL) stations, personal digital assistants (personal digital assistant, PDA) and the like. A wireless terminal may also be called a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), user device (user equipment), or user equipment (user equipment). By way of example, the terminal devices may be, but are not limited to, a high-speed rail communication device 102, a smart air conditioner 103, a smart fuel dispenser 104, a cell phone 105, a smart cup 106, a printer 107, and the like.

The network device according to embodiments of the present application may be a base station that may be configured to convert received air frames to and from internet protocol (internet protocol, IP) packets as a router between the wireless terminal and the rest of the access network, which may include IP network devices. The base station may also coordinate attribute management for the air interface. For example, the base station may be a base station (base transceiver station, BTS) in GSM or CDMA, a base station (NodeB) in wideband code division multiple access (wideband code division multiple access, WCDMA), an evolved base station (evolutional Node B, eNB or e-NodeB) in LTE, or a gNB in 5G, which is not limited by the embodiment of the present application. The above base stations are merely examples, and the network device may also be a relay station, an access point, an in-vehicle device, a wearable device, and other types of devices.

As shown in fig. 2, the structure of the terminal device will be described using the terminal device as an example of a mobile phone.

The terminal device 105 may include: radio Frequency (RF) circuitry 110, memory 120, input unit 130, display unit 140, sensor 150, audio circuitry 160, wireless fidelity (wireless fidelity, wi-Fi) module 170, processor 180, bluetooth module 181, and power supply 190.

The RF circuit 110 may be used for receiving and transmitting signals during the process of receiving and transmitting information or communication, and may receive downlink data of the base station and then transmit the downlink data to the processor 180 for processing; uplink data may be sent to the base station. Typically, RF circuitry includes, but is not limited to, antennas, at least one amplifier, transceivers, couplers, low noise amplifiers, diplexers, and the like.

Memory 120 may be used to store software programs and data. The processor 180 executes the terminal by running software programs or data stored in the memory 120Various functions of the device 105, and data processing. Memory 120 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. The memory 120 stores an operating system, such as developed by apple corporation, that enables the terminal device 105 to operateOperating System, developed by Google Corp->Open source operating System, developed by Microsoft corporation->An operating system, etc. The memory 120 of the present application may store an operating system and various application programs, and may also store code for performing methods of embodiments of the present application.

An input unit 130 (e.g., a touch screen) may be used to receive input numeric or character information, generating signal inputs related to user settings of the terminal device 105 and function control. In particular, the input unit 130 may include a touch screen 131 disposed at the front of the terminal device 105, on or near which touch operations by a user may be collected.

The display unit 140 (i.e., display screen) may be used to display information input by a user or information provided to the user and a graphical user interface (graphical user interface, GUI) of various menus of the terminal device 105. The display unit 140 may include a display screen 141 disposed on the front surface of the terminal device 105. The display screen 141 may be configured in the form of a liquid crystal display, a light emitting diode, or the like. The display unit 140 may be used to display various graphical user interfaces described in the present application. The touch screen 131 may cover the display screen 141, or the touch screen 131 and the display screen 141 may be integrated to implement input and output functions of the terminal device 105, and after integration, the touch screen may be simply referred to as a touch display screen.

The terminal device 105 may also include at least one sensor 150, such as a light sensor, a motion sensor. The terminal device 105 may also be configured with other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, and the like.

Audio circuitry 160, speaker 161, microphone 162 can provide an audio interface between the user and terminal device 105. The audio circuit 160 may transmit the received electrical signal converted from audio data to the speaker 161, and the electrical signal is converted into a sound signal by the speaker 161 to be output; on the other hand, the microphone 162 converts the collected sound signal into an electrical signal, which is received by the audio circuit 160 and converted into audio data, which is output to the RF circuit 110 for transmission to, for example, another terminal, or to the memory 120 for further processing.

Wi-Fi belongs to a short-range wireless transmission technology, and the terminal device 105 can help a user to send and receive e-mail, browse web pages, access streaming media and the like through the Wi-Fi module 170, so that wireless broadband internet access is provided for the user.

The processor 180 is a control center of the terminal device 105, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal device 105 and processes data by running or executing software programs stored in the memory 120, and calling data stored in the memory 120. Processor 180 may refer to one or more processors in the present disclosure, and processor 180 may include one or more processing units; the processor 180 may also integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., and a baseband processor that primarily handles wireless communications. It will be appreciated that the baseband processor described above may not be integrated into the processor 180. The processor 180 of the present application may run an operating system, an application program, a user interface display and a touch response, and a communication method according to the embodiments of the present application.

The bluetooth module 181 is configured to perform information interaction with other bluetooth devices having a bluetooth module through a bluetooth protocol. For example, the terminal device 105 may establish a bluetooth connection with a wearable electronic device (e.g., a smartwatch) that also has a bluetooth module through the bluetooth module 181, thereby performing data interaction.

The terminal device 105 also includes a power supply 190 (e.g., a battery) that provides power to the various components. The power supply may be logically connected to the processor 180 through a power management system, so that functions of managing charge, discharge, power consumption, etc. are implemented through the power management system.

As shown in fig. 3, an embodiment of the present application provides a schematic structural diagram of a network device. The network device 300 may include one or more radio frequency units, such as a remote radio frequency unit (remote radio unit, RRU) 310 and one or more baseband units (BBU) (also referred to as Digital Units (DUs)) 320. The RRU 310 may be referred to as a transceiver unit. Alternatively, the transceiver unit 310 may also be referred to as a transceiver, transceiver circuitry, transceiver, transmitter and receiver, etc., which may include at least one antenna 311 and RF circuitry 312. Alternatively, the transceiver unit 310 may include a receiving unit, which may correspond to a receiver (or receiver, receiving circuit), and a transmitting unit, which may correspond to a transmitter (or transmitter, transmitting circuit). The RRU 310 is mainly configured to receive and transmit radio frequency signals and convert radio frequency signals to baseband signals, for example, to send indication information to a terminal device. The BBU 320 is mainly configured to perform baseband processing, control network devices, and the like. The RRU 310 and BBU 320 may be physically located together or may be physically separate, i.e., a distributed base station.

The BBU 320 is a control center of a network device, and may also be referred to as a processing unit, and is mainly configured to perform baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and so on. For example, the BBU 320 may be used to control network devices to perform the methods to which the present application relates.

In one example, the BBU 320 may be formed by one or more single boards, where the multiple single boards may support a single access radio access network (such as an LTE network) together, or may support different access radio access networks (such as an LTE network, a 5G network, or other networks) respectively. The BBU 320 further comprises a memory 322 and a processor 321. The memory 322 is used to store the necessary instructions and data. The processor 321 is configured to control the network device to perform necessary actions, for example, to control the network device to perform the method according to the application. Processor 321 may refer to one or more processors in the present application. The memory 322 and processor 321 may serve one or more boards. That is, the memory and the processor may be separately provided on each board. It is also possible that multiple boards share the same memory and processor. In addition, each single board can be provided with necessary circuits.

The network device is not limited to the above configuration, and may be other configurations: for example: comprises a BBU and an adaptive radio unit (adaptive radio unit, ARU), or a BBU and an active antenna unit (active antenna unit, AAU); the customer premise equipment (customer premises equipment, CPE) may be provided, and other configurations may be provided, and the present application is not limited thereto.

Some concepts to which the present application relates will be first described:

power headroom reporting (power headroom report, PHR):

beginning with the fourth generation (4th generation,4G) long term evolution (long term evolution, LTE) communication system, PHR is an important component of the uplink power control related protocol. PHR-related protocols are basically used in 5G communication systems.

The PHR is mainly used for periodically reporting the difference between the uplink channel estimation power and the maximum transmission power of the terminal device to the network, so that the network device can schedule the terminal device more appropriately. The PHR-related protocol belongs to a protocol of a medium access control (media access control, MAC) layer, and the terminal device reports a Power Headroom (PH) through a medium access control element (media access control control element, MAC CE). In an early LTE version, the reporting structure of a PH MAC CE is shown in fig. 4, where the MAC CE includes eight bits, the first two bits R represent reserved bits, PH represents Power Headroom (PH), and occupies six bits, and the value of the PH MAC CE takes 2dB as an interval, and covers from-32 dB to +38dB.

PH has various subdivision categories, but the calculation formulas are similar, taking type1 (type 1) PH in the new radio, NR, protocol as an example, the calculation formula is as formula 1:

wherein P is _CMAX,f,c (i) The meaning of the inner equation, which represents the maximum transmit power Pcmax of the terminal device, { } is the calculated transmit power of the physical uplink shared channel (physical uplink shared channel, PUSCH), the difference of which is PH. Wherein the maximum transmit power P of the terminal device _CMAX Slightly different in 4G and 5G, taking 5G FR1 as an example, the formula is expressed as formula 2:

P _{CMAX_L,f,c} ≤P _CMAX,f,c ≤P _{CMAX_H,f,c} equation 2

Wherein:

P _{CMAX_H,f,c} ＝MIN{P _EMAX,c ,P _PowerClass -ΔP _PowerClass equation 4

P _CMAX,f,c P, the value of which is calculated mainly by equation 3 _{CMAX_L,f,c} And (5) determining.

In the above formula, deltaT _C,c Is a fixed value regarding whether a frequency bin is at the edge of a Band (Band). A-MPR _c The network device is additionally configured to the terminal device in RRC signaling. Delta T _IB,c Is to support the power relaxation additionally allowed by carrier aggregation (carrier aggregation, CA) or (dual connectivity, DC). Delta T _RxSRS Is a power offset related to the sounding reference signal (sounding reference signal, SRS) channel. The maximum output power back-off (max output power reduction, MPR) is a power back-off related to a modulation scheme or the like, and the P-MPR is a power back-off related to SAR/MPE.

MAX (MPR) in the above formula 3 _c ,A-MPR _c )+ΔT _IB,c +ΔT _C,c +ΔT _RxSRS Abbreviated asxMPR, and simplifying the fixed amount to:

P _{CMAX_L,f,c} ＝P _PowerClass -MAX(xMPR _c ,P-MPR _c ) Equation 5

Wherein P is _PowerClass For the maximum power of the terminal device formulated by the protocol shown in table 1, power class2 (power class 2) corresponds to 26dBm and power class 3 (power class 3) corresponds to 23dBm.

TABLE 1

In summary, the maximum transmit power P of the terminal device after PH reporting and back-off _CMAX And the calculated transmission power of the PUSCH. Assuming that the terminal device reports a PH of 3dB, the network device only knows that the terminal device has 3dB of power headroom after a series of power back-offs, but the network device cannot exactly know the actual transmit power of the terminal device.

In order to solve the problem that the network device does not know the real transmitting power of the terminal device in PH report, the R10 version of LTE introduces an extended PHR MAC CE based on the original report structure, and in the new report structure, the protocol introduces the maximum transmitting power P of the terminal device _CMAX And (3) reporting.

As shown in fig. 5, a plurality of PHR presence indicators C are added before the reporting structure shown in fig. 4 _i ，C _i =1 indicates that a serving cell with a serving cell index (ServCellIndex) of i has a PH report. One reserved bit of two reserved bits R in eight bits of the original reporting structure is redefined as V, and represents whether the PH calculation mode is based on the transmission of the real PUSCH. After the original reporting structure, eight bits are newly added for reporting the maximum transmitting power P of the terminal equipment _CMAX Wherein the first two bits areReserved bit, maximum transmit power P _CMAX Takes up six bits and takes up 1dB as the interval to cover from-29 dBm to 33dBm.

Terminal equipment reports maximum transmitting power P _CMAX The network device then knows the actual transmit power of the terminal device in addition to the power headroom of the transmit power of the terminal device. Assume that the terminal device reports PH, where v=0, ph=0db, p _CMAX =20 dBm, the network device can back-extrapolate:

v=0 indicates that the present report is the PH of the transmit power report calculated from the actual PUSCH.

Ph=0 indicates that the power margin of the transmission power of the terminal device reported this time is 0.

Ph=0 and P _CMAX =20 indicates that the transmission power of PUSCH calculated in this report is 20dBm, and the true transmission power is also 20dBm;

P _CMAX the expression =20 indicates that the uplink power of the terminal device has a limit, and the limit size is 3dB.

As shown in fig. 6, the R11 version of LTE introduces bit P, bit p=1 representing the maximum transmit power P in PH reporting _CMAX Below P _PowerClass The reason for (2) is P-MPRc.

With bit P, the network device can know the maximum transmitting power P of the terminal device _CMAX Specific reasons for the limitation, and then treated separately. For example, p=1 indicates the maximum transmission power P of the terminal device _CMAX The reason for limitation is SAR/MPE, etc., and the network equipment can improve the transmitting power of the terminal equipment by reducing methods such as uplink scheduling, etc., so as to achieve the purpose of overall better network performance. P=0 represents the maximum transmit power P of the terminal device _CMAX The reason for limitation is that the xMPR is mainly caused by an uplink adjustment mode, waveform characteristics and the like, and the network equipment can correspondingly improve the transmitting power of the terminal equipment by changing the adjustment mode and the like, so that the aim of improving the overall performance is fulfilled.

Difference in maximum transmit power of Frequency Ranges (FR) 1 and FR 2:

the maximum transmit power of FR1 has been described above and is not repeated here. The maximum transmit power of FR2 is emphasized below.

In FR2 the terminal devices are divided into four power classes, power class 1 corresponding to fixed radio access (fixed wireless access, FWA) terminal devices, power class 2 corresponding to vehicle (vehiclar) terminal devices, power class 3 corresponding to hand-held (hand) terminal devices, and power class 4 corresponding to high power non-hand-held (high power) terminal devices. The cell phone generally belongs to power class 3, taking power class 3 as an example: the lower limit of the effective isotropic radiated power (effective isotropic radiated power, EIRP) for power class 3 is defined in table 2, and the upper limits of the total radiated power (total radiated power, TRP) and EIRP for power class 3 are defined in table 3.

TABLE 2

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TABLE 3 Table 3

It can be seen that the EIRP of the operating band n257 of power class 3 ranges from 22.4-43dBm with a maximum TRP of 23dBm.

Maximum transmit power P of terminal equipment in FR2 _CMAX Definition includes P _UMAX And P _TMAX Two dimensions, P _UMAX And P _TMAX Within the following ranges:

P _TMAX,f,c ≤TRP _max equation 7

Wherein P is _UMAX Is a range with an upper limit of EIRP _max The lower limit is similar to FR1, and xMPR (in the case of FR2, xMPR is MAX (MPR) _f,c ,A-MPR _f,c )+ΔMB _P,n ) And P-MPR. ΔMB _P,n For when the terminal isThe device supports additional power backoff allowed when multiple FR2 bands. The definition of the function T () in equation 6 is shown in table 4:

TABLE 4 Table 4

Let the lower limit of equation 6 be P _CMAX After adjusting the sequence, writing as follows:

equation 5 for comparison FR1, maximum power P for FR2 _PowerClass Is a range, and the range of the T function is also large, and the magnitudes of xMPR and P-MPR cannot be back-deduced from the report of PH like FR 1.

Electromagnetic wave absorption ratio (specific absorption rate, SAR), maximum allowable exposure (maximum permissible exposure, MPE):

SAR is also known as specific absorption rate, which is the electromagnetic wave energy absorption ratio of the human body to a cell phone or wireless product. Under the action of the external electromagnetic field, an induced electromagnetic field is generated in the human body. The differential value of the energy bin (dW) absorbed (dissipated) by the mass bin (dm) within the volume bin (dV) of a given density (ρ) over time is SAR in W/kg. Specifically as shown in formula 9:

E represents the intensity value of an electric field in a tissue, and the unit is V/m; ρ represents the density of the substance corresponding to the different parts of the human body; delta represents conductivity.

The SAR measurement device detects the magnitude and distribution of the electric field intensity value E, and then converts the value into a value of SAR through calculation. And determining whether the radiation of the terminal equipment such as the mobile phone exceeds the standard according to the SAR value.

Major authorities for SAR are FCC and european unification (Conformite Europeenne, CE).

Generally, terminal devices operating in FR1 use SAR to evaluate the effect of ionizing radiation on the human body. Terminal equipment operating in FR2, due to the high frequency of electromagnetic waves, has a relatively poor penetration of electromagnetic waves, and the effect of ionizing radiation on the human body is generally evaluated with maximum permissible exposure MPE (FCC MPE, CE EMF).

Free space and other losses for systems using millimeter wave bands may be much higher than for systems below 6 GHz. Thus, for operation in the millimeter wave band, a higher EIRP for transmission is generally desired. This is typically accomplished by using one or more antenna arrays to steer the beam in a desired direction. In these systems, a single antenna radiator may fail the MPE limit, or if the beam of the handheld device is directed to the person's body or skin (or some other object being protected), the MPE limit may be exceeded. Furthermore, SAR limits and/or MPE limits may be exceeded for systems that communicate simultaneously via millimeter waves and frequency bands below 6 GHz.

FCC and ICNIRP impose exposure limits on Radio Frequency (RF) radiation from wireless devices. These limits are specified as SAR for frequency bands below 6GHz and MPE for frequency bands above 6 GHz.

In order to consider the rule requirement of SAR/MPE, the 5G protocol introduces the P-MPR, and the maximum transmitting power of the terminal equipment is limited by the P-MPR, so that the purpose of meeting the rule requirement is achieved.

Existing SAR/MPE scheme for 5G protocol

The challenges of terminal devices to meet SAR/MPE are getting larger due to the introduction of high power terminal devices and the higher EIRP brought by beamforming of FR2 millimeter waves.

There are currently two main schemes for solving the SAR/MPE problem with the 5G protocol:

scheme one, P-MPR in PHR-related protocol. The terminal equipment automatically selects the P-MPR according to the self use scene so as to ensure to meet the electromagnetic radiation requirement of the supervision mechanism. In some scenarios the P-MPR may be greater than 10dB or even 15dB.

The second scheme, the NR R15 protocol introduces a maximum uplink duty cycle (maxuplink uplink channel) of a terminal device capability item, which means that the terminal device indicates the maximum percentage of symbols that can be scheduled for uplink transmission during a certain evaluation period, so as to ensure that the electromagnetic radiation requirement of a regulatory agency is met. Specifically, the capability item is divided into two sub-capability items (maxUpLinkDuyCycle-PC 2-FR1 and maxUpLinkDuyCycle-FR 2) under FR1 and FR2, respectively.

Currently, 3GPP is developing 5g r16 protocol formulation to increase MPE performance in FR2 scenarios. The aim is to avoid significant and unpredictable radio link failures and connection releases due to MPE reasons for the terminal equipment in FR 2.

Assuming that the actual maximum transmit power of the FR1 terminal device is 23dBm, and there are two PHR reports as shown in table 5:

first PHR report: xMPR is 3dB, and P-MPR is 0dB; the terminal device can calculate the maximum transmitting power P of the terminal device according to the formula 5 _CMAX,f,c =23-3=20 dBm, and the PHR may then be reported in the format as shown in fig. 6. Wherein bit P is set to 0.

And PHR report for the second time: xMPR is 3dB, and P-MPR is 5dB; the terminal device can calculate the maximum transmitting power P of the terminal device according to the formula 5 _CMAX,f,c =23-5=18 dBm, and the PHR can then be reported in the format as shown in fig. 6. Wherein bit P is set to 1.

TABLE 5

According to the formula 5 and the bit P, the xMPR corresponding to the first PHR report is reversely deduced to be 3dB, and the P-MPR corresponding to the second PHR report is reversely deduced to be 5dB.

For FR2, transmit power P _PowerClass Instead of a fixed value, a range of values, the network device cannot back-extrapolate xMPR or P-MPR according to equation 8.

The application provides a power headroom report sending method, which is implemented by adopting the following formula 8 in FR2 P _PowerClass Instead of a reference quantity P which can be determined by both the network device and the terminal device _{CMAX_ref} Thereby calculating the maximum transmitting power P according to the formula 8 _CMAX,f,c This allows the network device and the terminal device to transmit power P at maximum _CMAX,f,c And the understanding of (2) is consistent, so that MPR or P-MPR can be accurately reversely deduced from PHR report.

As shown in fig. 7, a power headroom report sending method provided by an embodiment of the present application includes:

s701, obtaining second indication information according to one of the xMPR and the P-MPR and the first indication information.

Wherein the first indication information is used for indicating preset transmitting power P of the terminal equipment _{CMAX_ref} I.e. as a reference to the foregoing. The first indication information may be the actual maximum transmission power of the terminal device, or the maximum transmission power of an antenna port of the terminal device, or a nonsensical value.

The terminal device operates in FR2.

The second indication information is used for indicating the maximum transmitting power P of the terminal equipment _CMAX,f,c . Maximum transmit power P for a terminal device _CMAX,f,c See the previous description, which is not repeated here.

Specifically, the second indication information P can be calculated according to the formula 10 _CMAX,f,c ：

P _CMAX,f,c ＝P _{CMAX_ref} -MAX(xMPR _f,c ,P-MPR _f,c ) Equation 10

Wherein P is _{CMAX_ref} P-MPR as the first indication information _f,c For P-MPR, xMPR denotes a correction value of MPR, which may be, for example, MAX (MPR _f,c ,A-MPR _f,c )+ΔMB _P,n Equation 10 may be replaced with equation 11:

P _CMAX,f,c ＝P _{CMAX_ref} -MAX(MAX(MPR _f,c ,A-MPR _f,c )+ΔMB _P,n ,P-MPR _f,c ) Equation 11

Wherein P is _{CMAX_ref} For the first indication information, MPR _f,c Is MPR, P-MPR _f,c For P-MPR, f is the carrier index, c is the serving cell index, ΔMB _P,n For additional power backoff allowed when the terminal device supports multiple FR2 bands.

In protocol TS 38.306, as shown in tables 6-8, there are three concerns about the power class of the terminal device.

TABLE 6

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TABLE 7

TABLE 8

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The present application may define the first indication information (e.g., parameter ue-pcmax_ref-for-PHR) as shown in table 9 after table 7.

TABLE 9

The first indication information (e.g., parameter Ue-CA-pcmax_ref-for-PHR) as shown in table 10 may also be defined on the basis of table 8. I.e. the first indication information may be used to indicate a preset transmit power of the terminal device in a carrier aggregation (carrier aggregation, CA) or dual connectivity (dual connectivity, DC) scenario.

Table 10

The values of Ue-Pcmax_ref-for-PHR and Ue-CA-Pcmax_ref-for-PHR may be the same or different.

With the evolution of the protocol, if a new DC/CA combination type exists or a scene of reporting the first indication information is needed, corresponding capability items and signaling reporting fields can be correspondingly increased according to the idea of the application.

In one possible embodiment, the first indication information may be a default value specified by the protocol or known to the terminal device and the network device, e.g. 23dBm. The default value may be determined from the Power Class (PC) of FR2, or may be determined from various combinations of CA/DC. In this way, the terminal device does not need to inform the network device of the first indication information, and the network device and the terminal device are operated with the maximum transmission power P _CMAX,f,c Can be consistently understood.

In another possible implementation, the terminal device may send the first indication information to the network device.

It should be noted that the first indication information is optional, for example, if the terminal device does not send the first indication information to the network device, the terminal device and the network device may take a default value (for example, 23 dBm) of the first indication information, and if the terminal device sends the first indication information to the network device, the terminal device and the network device may take a current value of the first indication information.

In one possible embodiment, the first indication information may be carried in radio resource control (radio resource control, RRC) signaling, optionally the value may be reported in UE capability reporting of RRC signaling.

Alternatively, in another possible embodiment, the first indication information may also be carried in the MAC CE or uplink control information (uplink control information, UCI), which is not limited by the present application. The present application is exemplified by the bearer in RRC signaling, but is not intended to be limited thereto.

For example, the first indication information may be carried in a BandNR sub-report item of RRC signaling.

The value range of the first indication information is x-y.

In protocol TS 38.133, the maximum transmission power P of a terminal device is specified _CMAX,f,c Takes up six bits, takes 1dB as interval, and takes the value range from-29 dBm to 33dBm.

In order to meet various requirements of protocols on output power of terminal equipment, the terminal equipment must be calibrated before delivery; for FR1, a radio frequency direct connection calibration method is generally adopted. However, for FR2, since there is no rf direct connection port like FR1, a null calibration method is generally adopted. The upper limit of EIRP for a power class 1 terminal device in FR2 is 55dBm, outside the effective resolution range of PHR reporting.

Therefore, in the present application, the upper limit y of the value of the first instruction information may be set to 33dBm. Alternatively, the upper limit y of the first indication information may be set to 55dBm, and accordingly, the maximum transmission power P of the terminal device _CMAX,f,c The value range of (2) is modified to be-7 dBm to 55dBm. Alternatively, the upper limit y may take other values, and the present application is not limited to the values of the upper limit y and the lower limit x.

S702, the terminal equipment sends PHR.

Accordingly, the network device receives the PHR.

The PHR comprises second indication information and third indication information.

The third indication information is used for indicating that the second indication information is obtained by the xMPR and the first indication information or indicating that the second indication information is obtained by the P-MPR and the first indication information. The third indication information may be bit P as described above.

S703, the network equipment determines xMPR or P-MPR according to the second indication information and the third indication information.

Specifically, in one possible implementation, when the third indication information indicates that the second indication information is obtained from the xMPR and the first indication information (i.e. bit p=0), the network device may calculate xMPR according to formula 12:

xMPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c equation 12

Alternatively, when the third indication information indicates that the second indication information is obtained from the P-MPR and the first indication information (i.e. bit p=1), the network device may calculate the P-MPR according to formula 13 _f,c ：

P-MPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c Equation 13

Wherein P is _{CMAX_ref} For the first indication information, P _CMAX,f,c Is the second indication information.

For example, assume that a terminal device operating in FR2 has an EIRP of 35dBm.

First PHR report: the xMPR is 3dB and the P-MPR is 0dB.

And PHR report for the second time: the xMPR is 3dB and the P-MPR is 5dB.

As shown in table 11, if the terminal device does not report the first indication information P _{CMAX_ref} The network device may determine the first indication information P _{CMAX_ref} For default, e.g. 23dBm.

For the first PHR report, the terminal device may calculate the maximum transmit power P according to equation 10 _CMAX,f,c =23-3=20 dBm, and the PHR can then be reported in the format shown in fig. 6. Where bit P is 0. Accordingly, the network device may calculate xmpr=23-20=3 dB according to equation 12.

For the second PHR report, the terminal device may calculate the maximum transmit power P according to equation 10 _CMAX,f,c =23-5=18 dBm, and the PHR can then be reported in the format shown in fig. 6. Where bit P is 1. Accordingly, the network device may calculate P-mpr=23-18=5 dB according to equation 13.

TABLE 11

As shown in table 12, if the terminal device reports the first indication information P _{CMAX_ref} 33dBm.

For the first PHR report, the terminal device may calculate the maximum transmit power P according to equation 10 _CMAX,f,c =33-3=30 dBm, and the PHR can then be reported in the format shown in fig. 6. Where bit P is 0. Accordingly, the network device may calculate xmpr=33-30=3 dB according to equation 12.

For the second PHR report, the terminal device may calculate the maximum transmit power P according to equation 10 _CMAX,f,c =33-5=28 dBm, and the PHR can then be reported in the format shown in fig. 6. Where bit P is 1. Accordingly, the network device may calculate P-mpr=33-28=5 dB according to equation 13.

Table 12

According to the power headroom report sending method provided by the embodiment of the application, second indicating information is obtained according to one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR and the first indicating information, wherein the first indicating information is used for indicating the preset transmitting power of the terminal equipment, the second indicating information is used for indicating the maximum transmitting power of the terminal equipment, and the terminal equipment works in the frequency range 2; and reporting PHR by sending power headroom, wherein the PHR comprises second indication information and third indication information, and the third indication information is used for indicating that the second indication information is obtained by the correction value of the MPR and the first indication information or indicating that the second indication information is obtained by the P-MPR and the first indication information. The preset transmitting power of the terminal equipment indicated by the first indicating information is known by the network equipment and the terminal equipment, and the maximum transmitting power of the terminal equipment calculated according to the first indicating information is the same, so that the understanding of the network equipment and the terminal equipment on the maximum transmitting power is kept consistent, and therefore the xMPR or the P-MPR can be accurately and reversely deduced from the PHR report. The method realizes that the network equipment can reversely push the value of xMPR/P-MPR according to PHR reported by the terminal equipment in the FR2 scene.

It will be appreciated that in the above embodiments, the method and/or steps implemented by the terminal device may also be implemented by a component (e.g., a chip or a circuit) that may be used in the terminal device, and the method and/or steps implemented by the network device may also be implemented by a component that may be used in the network device.

The scheme provided by the embodiment of the application is mainly introduced from the interaction angle among the network elements. Correspondingly, the embodiment of the application also provides a communication device which is used for realizing the various methods. The communication device may be a terminal device in the above method embodiment, or a device including the above terminal device, or a chip or a functional module in the terminal device; alternatively, the communication device may be a network device in the above method embodiment, or an apparatus including the network device, or a chip or a functional module in the network device. It will be appreciated that the communication device, in order to achieve the above-described functions, comprises corresponding hardware structures and/or software modules performing the respective functions. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. 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 present application.

The embodiment of the application can divide the functional modules of the communication device according to the embodiment of the method, for example, each functional module can be divided corresponding to each function, or two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

For example, the communication device is taken as an example of the terminal device in the above method embodiment. Fig. 8 shows a schematic structural diagram of a communication device 80. The communication device 80 includes a processing module 8001 and a transmitting/receiving module 8002. The communication means 80 may be the terminal device of fig. 7. The processing module 8001 may also be referred to as a processing unit, and is configured to implement the processing functions of the terminal device in the above-described method embodiment. For example, step S701 in fig. 7 is performed. The transceiver module 8002, which may also be referred to as a transceiver unit, is configured to implement the transceiver function of the terminal device in the above-described method embodiment. For example, step S702 in fig. 7 is performed. The transceiver module 8002 may be referred to as a transceiver circuit, transceiver, or communication interface.

The processing module 8001 is configured to obtain second indication information according to the first indication information and one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR, where the first indication information is used to indicate a preset transmission power of the terminal device, the second indication information is used to indicate a maximum transmission power of the terminal device, and the terminal device operates in a frequency range 2.

And the transceiver module 8002 is configured to send a power headroom report PHR, where the PHR includes second indication information and third indication information, and the third indication information is used to indicate that the second indication information is obtained by the correction value of the MPR and the first indication information, or indicates that the second indication information is obtained by the P-MPR and the first indication information.

In one possible implementation, the transceiver module 8002 is further configured to: and sending the first indication information.

In one possible implementation, the processing module 8001 is specifically configured to: the second indication information P is calculated according to the following formula _CMAX,f,c ：P _CMAX,f,c ＝P _{CMAX_ref} -MAX(xMPR _f,c ,P-MPR _f,c ) Wherein P is _{CMAX_ref} For the first indication information, xMPR _f,c For correction of MPR, P-MPR _f,c Is P-MPR.

In the present embodiment, the communication device 80 is presented in a form in which the respective functional modules are divided in an integrated manner. A "module" herein may refer to a particular ASIC, an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that can provide the described functionality. In a simple embodiment, one skilled in the art will appreciate that the communication means 80 may take the form of the terminal device 105 shown in fig. 2.

For example, the processor 180 in the terminal device 105 shown in fig. 2 may cause the terminal device 105 to perform the method in the above-described method embodiment by invoking computer-executable instructions stored in the memory 120.

Specifically, the function/implementation procedure of the processing module 8001 in fig. 8 may be implemented by the processor 180 in the terminal device 105 shown in fig. 2 invoking computer execution instructions stored in the memory 120. Alternatively, the function/implementation of the transceiver module 8002 in fig. 8 may be implemented by the RF circuit 110 in the terminal device 105 shown in fig. 2.

Since the communication device 80 provided in this embodiment can perform the above method, the technical effects obtained by the method can be referred to the above method embodiment, and will not be described herein.

For example, the communication apparatus is taken as an example of the network device in the above-mentioned method embodiment. Fig. 9 shows a schematic structural diagram of a communication device 90. The communication device 90 includes a processing module 9001 and a transceiver module 9002. The communication means 80 may be the network device of fig. 7. The processing module 9001 may also be referred to as a processing unit, for implementing the processing functions of the network device in the above method embodiment. For example, step S703 in fig. 7 is performed. The transceiver module 9002, which may also be referred to as a transceiver unit, is configured to implement the transceiver function of the network device in the foregoing method embodiment. For example, step S702 in fig. 7 is performed. The transceiver module 9002 may be referred to as a transceiver circuit, transceiver, or communication interface.

The transceiver module 9002 is configured to receive a power headroom report PHR, where the PHR includes second indication information and third indication information, the second indication information is used to indicate a maximum transmission power of the terminal device, the third indication information is used to indicate that the second indication information is obtained by a correction value of a maximum output power back-off MPR and the first indication information, or the second indication information is obtained by power management maximum output power back-off P-MPR and the first indication information, and the first indication information is used to indicate a preset transmission power of the terminal device.

A processing module 9001, configured to determine a correction value of the MPR or the P-MPR according to the second indication information and the third indication information.

In one possible implementation, the transceiver module 9002 is further to: and receiving first indication information.

In one possible implementation, the processing module 9001 is specifically configured to: third indication informationIndicating the second indicating information is obtained from the correction value of MPR and the first indicating information, and calculating the correction value xMPR of MPR according to the following formula _f,c ：xMPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c Alternatively, the third indication information indicates that the second indication information is obtained from the P-MPR and the first indication information, and the P-MPR is calculated according to the following formula _f,c ：P-MPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c Wherein P is _{CMAX_ref} For the first indication information, P _CMAX,f,c Is the second indication information.

In the present embodiment, the communication device 90 is presented in a form in which the respective functional modules are divided in an integrated manner. A "module" herein may refer to a particular ASIC, an electronic circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that can provide the described functionality. In a simple embodiment, one skilled in the art will appreciate that the communication device 90 may take the form of the network apparatus 300 shown in fig. 3.

For example, the processor 301 in the network device 300 shown in fig. 3 may cause the network device 300 to perform the method in the above-described method embodiment by invoking computer-executable instructions stored in the memory 302.

In particular, the functions/implementations of the processing module 9001 in fig. 9 may be implemented by the processor 321 in the network device 300 shown in fig. 3 invoking computer-executed instructions stored in the memory 322. Alternatively, the functions/implementation of the transceiver module 9002 in fig. 9 may be implemented by the RF circuit 312 in the network device 300 shown in fig. 3.

Since the communication device 90 provided in this embodiment can perform the above method, the technical effects obtained by the method can be referred to the above method embodiment, and will not be described herein.

The embodiment of the application also provides a communication device, which comprises a processor, a memory and a transceiver, wherein the processor is coupled with the memory, and when the processor executes a computer program or instructions in the memory, a corresponding method of the terminal device in fig. 7 is executed.

The embodiment of the application also provides a communication device, which comprises a processor, a memory and a transceiver, wherein the processor is coupled with the memory, and when the processor executes a computer program or instructions in the memory, a corresponding method of the network device in fig. 7 is executed.

The embodiment of the application also provides a chip, which comprises: a processor and an interface for calling and running the computer program stored in the memory from the memory, and executing the method corresponding to the terminal device or the network device as in fig. 7.

The embodiment of the application also provides a computer readable storage medium, wherein instructions are stored in the computer readable storage medium, and when the instructions run on a computer or a processor, the instructions cause the computer or the processor to execute the method corresponding to the terminal device or the network device in fig. 7.

Embodiments of the present application also provide a computer program product comprising instructions which, when executed on a computer or a processor, cause the computer or the processor to perform the method corresponding to the terminal device or the network device in fig. 7.

The embodiment of the application provides a chip system, which comprises a processor, wherein the processor is used for a communication device to execute a method corresponding to terminal equipment or network equipment in fig. 7.

In one possible design, the chip system further includes a memory for storing program instructions and data necessary for the terminal device. The chip system may include a chip, an integrated circuit, or may include a chip and other discrete devices, which is not particularly limited in this embodiment of the application.

The communication device, the chip, the computer storage medium, the computer program product or the chip system provided by the present application are all configured to perform the method described above, so that the advantages achieved by the present application can refer to the advantages provided in the embodiments provided above, and are not described herein again.

The processor referred to in the embodiments of the present application may be a chip. For example, it may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

The memory to which embodiments of the present application relate may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. 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 present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, indirect coupling or communication connection of devices or units, electrical, mechanical, or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy Disk, a hard Disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The power headroom report sending method is characterized by comprising the following steps of:

obtaining second indication information according to one of a correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR and first indication information, wherein the first indication information is used for indicating preset transmitting power of terminal equipment, the second indication information is used for indicating maximum transmitting power of the terminal equipment, and the terminal equipment works in a frequency range 2;

and sending a PHR (power headroom report), wherein the PHR comprises the second indication information and the third indication information, and the third indication information is used for indicating that the second indication information is obtained by the correction value of the MPR and the first indication information, or indicating that the second indication information is obtained by the P-MPR and the first indication information.

2. The method according to claim 1, characterized in that the first indication information is a default value known to the terminal device and the network device, or the first indication information is determined according to the power class of frequency range 2, or the first indication information is determined according to various combinations of carrier aggregation CA or dual connectivity DC.

3. The method according to claim 1, wherein the method further comprises:

and sending the first indication information.

4. A method according to claim 3, characterized in that the first indication information is carried in radio resource control, RRC, signalling.

5. The method of claim 4, wherein the first indication information is carried in a user equipment UE capability report of the RRC signaling.

6. The method according to any one of claims 1-5, wherein the obtaining the second indication information according to the first indication information and one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR includes:

the second indication information P is calculated according to the following formula _CMAX,f,c ：

P _CMAX,f,c ＝P _{CMAX_ref} -MAX(xMPR _f,c ,P-MPR _f,c )，

Wherein P is _{CMAX_ref} For the first indication information, xMPR _f,c For correction of said MPR, P-MPR _f,c Is said P-MPR.

7. The power headroom report sending method is characterized by comprising the following steps of:

receiving a PHR (power headroom report), wherein the PHR comprises second indication information and third indication information, the second indication information is used for indicating the maximum transmission power of the terminal equipment, the third indication information is used for indicating that the second indication information is obtained by a correction value of a maximum output power back-off (MPR) and first indication information, or the second indication information is obtained by a power management maximum output power back-off (P-MPR) and the first indication information, the first indication information is used for indicating the preset transmission power of the terminal equipment, and the terminal equipment works in a frequency range 2;

and determining a correction value of the MPR or the P-MPR according to the second indication information and the third indication information.

8. The method of claim 7, wherein the first indication information is a default value known to the terminal device and the network device, or wherein the first indication information is determined according to a power class of frequency range 2, or wherein the first indication information is determined according to various combinations of carrier aggregation CA or dual connectivity DC.

9. The method of claim 7, wherein the method further comprises:

and receiving the first indication information.

10. The method of claim 9, wherein the first indication information is carried in radio resource control, RRC, signaling.

11. The method according to claim 10, wherein the first indication information is carried in a user equipment UE capability report of the RRC signaling.

12. The method according to any one of claims 7-11, wherein the determining the correction value of the MPR or the P-MPR based on the second indication information and the third indication information comprises:

the third indication information indicates that the second indication information is obtained from the correction value of the MPR and the first indication information, and the correction value xMPR of the MPR is calculated according to the following formula _f,c ：

xMPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c ，

Or alternatively, the process may be performed,

the third indication information indicates that the second indication information is obtained from the P-MPR and the first indication information, and the P-MPR is calculated according to the following formula _f,c ：

P-MPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c ，

Wherein P is _{CMAX_ref} For the first indication information, P _CMAX,f,c And the second indication information is obtained.

13. A communication device, comprising:

The processing module is used for obtaining second indication information according to one of the correction value of the maximum output power back-off MPR and the power management maximum output power back-off P-MPR and the first indication information, wherein the first indication information is used for indicating the preset transmitting power of the terminal equipment, the second indication information is used for indicating the maximum transmitting power of the terminal equipment, and the terminal equipment works in a frequency range 2;

and the receiving and transmitting module is used for transmitting a power headroom report PHR, wherein the PHR comprises the second indication information and the third indication information, and the third indication information is used for indicating that the second indication information is obtained by the correction value of the MPR and the first indication information or indicating that the second indication information is obtained by the P-MPR and the first indication information.

14. The apparatus of claim 13, wherein the first indication information is a default value known to the terminal device and the network device, or wherein the first indication information is determined based on a power level of frequency range 2, or wherein the first indication information is determined based on various combinations of carrier aggregation, CA, or dual connectivity, DC.

15. The apparatus of claim 13, wherein the transceiver module is further configured to:

And sending the first indication information.

16. The apparatus of claim 15, wherein the first indication information is carried in radio resource control, RRC, signaling.

17. The apparatus of claim 16, wherein the first indication information is carried in a user equipment UE capability report of the RRC signaling.

18. The apparatus according to any one of claims 13-17, wherein the processing module is specifically configured to:

P _CMAX,f,c ＝P _{CMAX_ref} -MAX(xMPR _f,c ,P-MPR _f,c )，

19. A communication device, comprising:

the receiving and transmitting module is used for receiving a power headroom report PHR, wherein the PHR comprises second indication information and third indication information, the second indication information is used for indicating the maximum transmitting power of the terminal equipment, the third indication information is used for indicating that the second indication information is obtained by a correction value of a maximum output power back-off MPR and first indication information, or the second indication information is obtained by a power management maximum output power back-off P-MPR and the first indication information, the first indication information is used for indicating the preset transmitting power of the terminal equipment, and the terminal equipment works in a frequency range 2;

And the processing module is used for determining the correction value of the MPR or the P-MPR according to the second indication information and the third indication information.

20. The apparatus of claim 19, wherein the first indication information is a default value known to the terminal device and the network device, or wherein the first indication information is determined based on a power level of frequency range 2, or wherein the first indication information is determined based on various combinations of carrier aggregation, CA, or dual connectivity, DC.

21. The apparatus of claim 19, wherein the transceiver module is further configured to:

and receiving the first indication information.

22. The apparatus of claim 21, wherein the first indication information is carried in radio resource control, RRC, signaling.

23. The apparatus of claim 22, wherein the first indication information is carried in a user equipment UE capability report of the RRC signaling.

24. The apparatus according to any one of claims 19-23, wherein the processing module is specifically configured to:

the third indication information indicates that the second indication information is obtained from the correction value of the MPR and the first indication information according to The correction value xMPR of the MPR is calculated according to the following formula _f,c ：

xMPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c ，

Or alternatively, the process may be performed,

P-MPR _f,c ＝P _{CMAX_ref} -P _CMAX,f,c ，

25. A computer readable storage medium having instructions stored therein which, when run on a computer or processor, cause the computer or processor to perform the method of any of claims 1-6, 7-12.