CN112867129A

CN112867129A - Power headroom reporting and sending method and device

Info

Publication number: CN112867129A
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: 2021-05-28
Anticipated expiration: 2039-11-08
Also published as: CN112867129B

Abstract

The application discloses a method and a device for reporting and sending power headroom, relates to the field of communication, and is used for realizing that a network device can reversely deduce an MPR/P-MPR value according to a PHR reported by a terminal device in an FR2 scene. The method for reporting and sending the power headroom comprises the following steps: obtaining second indication information according to the correction value of the maximum output power backoff (MPR), one of power management maximum output power backoff (P-MPR) and first indication information, wherein the first indication information is used for indicating preset transmission power of the terminal equipment, the second indication information is used for indicating the maximum transmission power of the terminal equipment, and the terminal equipment works in a frequency range 2; and reporting the PHR by the transmission 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 corrected 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

Power headroom reporting and sending method and device

Technical Field

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

Background

When the terminal equipment receives and transmits data in a wireless mode, ionizing radiation is generated on human bodies under the action of an electromagnetic field. Various national institutions, such as the Federal Communications Commission (FCC) and the international non-ionizing radiation protection commission (ICNIRP), limit the radio frequency radiation from the terminal equipment and prevent the ionizing radiation generated by the terminal equipment from causing harm to human bodies.

The 5th generation (5G) communication protocol includes two Frequency Ranges (FR): FR1 and FR2, FR1 (also called Sub6G) refers to the frequency range below 6GHz and FR2 (also called millimeter wave (mmW)) refers to the frequency range above 6 GHz.

Generally, a terminal device operating in FR1 uses a Specific Absorption Rate (SAR) to evaluate the effect of ionizing radiation on the human body. Terminal devices operating in FR2 have poor penetration effect due to high frequency of electromagnetic wave, and the Maximum Permissible Exposure (MPE) is generally used to evaluate the effect of ionizing radiation on human body.

In a wireless communication system (e.g., a 5G communication system), in order to prevent the ionizing radiation generated by the terminal equipment from being too large to exceed the regulatory requirements of each country, a power management (power management) maximum output power reduction (MPR) (i.e., P-MPR) is used to limit the maximum transmission power of the terminal equipment, thereby reducing the SAR or MPE of the terminal equipment to meet the regulatory requirements. The larger the P-MPR is, the smaller the maximum transmission power of the terminal device is.

The P-MPR is autonomously controlled by the terminal device, and if a larger P-MPR is set, a radio link failure may be caused, and the terminal device needs to perform Radio Resource Control (RRC) reestablishment and other procedures. The frequency of radio link failures is even more severe when the terminal device is operating in FR 2. For this reason, the R16 protocol is considering enhancement of a Power Headroom Report (PHR) function.

The PHR is configured to periodically report, to the network device, a difference between the uplink channel estimated power and the maximum transmit power of the terminal device, so that the network device performs more appropriate scheduling for the terminal device. The terminal equipment can indicate the maximum transmitting power P of the terminal equipment to the network equipment through the PHR_CMAX"Gong" exerciseA Power Headroom (PH) and a bit P, wherein the power headroom may be a maximum transmission power P_CMAXAnd a difference between the calculated transmission power of the Physical Uplink Shared Channel (PUSCH). While the maximum transmitting power P_CMAXMay be based on MPR/P-MPR and maximum power P of the terminal device_PowerClassAs a result, bit P is used to indicate whether the power backoff is dominated by P-MPR.

In the FR1 scenario, the maximum power P due to the terminal device_PowerClassIs a definite value, so the network device can be based on P in PHR_CMAXAnd reversely deducing the value of the MPR/P-MPR. Whereas in the FR2 scenario, P is the maximum power of the terminal device_PowerClassIs a range of values rather than a definite value. So the network device cannot be according to P in PHR_CMAXAnd reversely deducing the value of the MPR/P-MPR.

Disclosure of Invention

The embodiment of the application provides a method and a device for reporting and sending a power headroom, which are used for enabling a network device to reversely deduce a value of an MPR/P-MPR according to a PHR reported by a terminal device in an FR2 scenario.

In a first aspect, a method for reporting and sending power headroom is provided, including: and obtaining second indication information according to the first indication information and one of the correction value of the maximum output power backoff (MPR), the power management maximum output power backoff (P-MPR), wherein the first indication information is used for indicating the preset transmission power of the terminal device, the second indication information is used for indicating the maximum transmission power of the terminal device, and the terminal device operates in the frequency range 2. And reporting the PHR by the transmission 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 corrected 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 method for reporting and sending the power headroom, second indication information is obtained according to one of a correction value of a maximum output power backoff (MPR), a power management maximum output power backoff (P-MPR) and first indication information, wherein the first indication information is used for indicating preset transmission power of terminal equipment, the second indication information is used for indicating the maximum transmission power of the terminal equipment, and the terminal equipment works in a frequency range 2; and reporting the PHR by the transmission 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 corrected 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 indication information can be known by the network equipment and the terminal equipment, and the maximum transmitting power of the terminal equipment calculated according to the first indication information is the same, so that the network equipment and the terminal equipment can keep consistent understanding of the maximum transmitting power, and the MPR or the P-MPR can be accurately and reversely deduced from the report of the PHR. The method and the device realize that the network equipment can reversely deduce the value of the MPR/P-MPR according to the PHR reported by the terminal equipment in 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 the 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 consistent understanding of the first indication information.

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

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

In one possible embodiment, the maximum output power backoff is managed based on the correction value of the maximum output power backoff MPR and the powerOne of the P-MPR withdrawal and the first indication information obtain second indication information, and the method comprises the following steps: calculating to obtain second indication information P 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}As first indication information, xMPR_f,cFor correction of MPR, P-MPR_f,cIs P-MPR.

In a second aspect, a method for reporting and sending power headroom is provided, and includes: and 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 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 backoff (MPR) and the first indication information, or indicating that the second indication information is obtained by a power management maximum output power backoff (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 the 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: first indication information is received. The first indication information may be a protocol-specified value, or may be sent by the terminal device to the network device, so that the terminal device and the network device keep consistent understanding of the first indication information.

In one possible embodiment, determining the MPR or the P-MPR according to the second indication information and the third indication information includes: the third indication information indicates that the second indication information is obtained from 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,cOr the third indication information indicates that the second indication information is obtained by P-MPR and the first indication information, and the P-MPR is obtained by calculation according to the following formula_f,c： P-MPR_f,c＝P_{CMAX_ref}-P_CMAX,f,cWherein P is_{CMAX_ref}Is first indication information, P_CMAX,f,cIs the second indication information.

In a third aspect, a communication apparatus is provided, including: and the processing module is configured to obtain second indication information according to the correction value of the maximum output power backoff (MPR), one of the power management maximum output power backoff (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 the frequency range 2. And the transceiver module is configured to send the 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 indicate that the second indication information is obtained by the P-MPR and the first indication information.

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

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

In a possible implementation manner, the first indication information is carried in a UE capability report of an RRC signaling.

In a possible implementation, the processing module is specifically configured to: calculating to obtain second indication information P 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}As first indication information, xMPR_f,cFor correction of MPR, P-MPR_f,cIs P-MPR.

In a fourth aspect, a communication apparatus is provided, which includes: a transceiver module, 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 a terminal device, the third indication information is used to indicate that the second indication information is obtained from a modification value of a maximum output power backoff (MPR) and the first indication information, or indicate that the second indication information is obtained from a power management maximum output power backoff (P-MPR) and the first indication information, and the first indication information is used to indicate a preset transmission power of the terminal device. 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 embodiment, the transceiver module is further configured to: first indication information is received.

In a possible implementation, 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, 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,cOr the third indication information indicates that the second indication information is obtained by P-MPR and the first indication information, and the P-MPR is obtained by calculation according to the following formula_f,c：P-MPR_f,c＝P_{CMAX_ref}-P_CMAX,f,cWherein P is_{CMAX_ref}Is first indication information, P_CMAX,f,cIs the second indication information.

In a fifth aspect, a communication device is provided, the communication device comprising a processor, a memory and a transceiver, the processor being coupled to the memory and configured to perform the method according to the first aspect and any of the embodiments thereof when the processor executes the computer program or instructions in the memory.

In a sixth aspect, a communication device is provided, the communication device comprising a processor, a memory and a transceiver, the processor being coupled to the memory and configured to perform the method according to the second aspect and any of its embodiments when the processor executes the computer program or instructions in the memory.

In a seventh aspect, a chip is provided, which includes: a processor and an interface for retrieving and executing a computer program stored in the memory from the memory, performing the method according to any of the first to second aspects and any of them.

In an eighth aspect, there is provided a computer readable storage medium having stored therein instructions which, when run on a computer or processor, cause the computer or processor to perform a method as in 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.

A tenth aspect provides a communication system comprising a communication apparatus as the third aspect and a communication apparatus as the fourth aspect, or comprising a communication apparatus as the fifth aspect and a communication apparatus as the sixth aspect.

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

Drawings

Fig. 1 is a schematic architecture 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 another PH MAC CE according to an embodiment of the present application;

fig. 7 is a flowchart illustrating a method for reporting and sending power headroom according to an embodiment of the present application;

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

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

Detailed Description

The embodiment of the application can be applied to a Time Division Duplexing (TDD) scene and can also be applied to a Frequency Division Duplexing (FDD) scene.

The embodiment of the present application is described by depending on a scenario of a fifth generation (5G) communication network in a wireless communication network, and it should be noted that the scheme in the embodiment of the present application may also be applied to other wireless communication networks, for example, a sixth generation mobile communication system, and corresponding names may also be replaced by names of corresponding functions in other wireless communication networks. The 5G mobile communication system according to the present application includes a non-standalone (NSA) 5G mobile communication system and/or a Standalone (SA) 5G mobile communication system.

The embodiment of the application can be applied to a Long Term Evolution (LTE) system, for example, a narrowband band internet of things (NB-IoT) system, or can also be applied to an LTE-Advanced (LTE-a) system. It is also applicable to other wireless communication systems, such as global system for mobile communication (GSM), mobile communication system (UMTS), Code Division Multiple Access (CDMA) system, and new network equipment system.

As shown in fig. 1, a communication system 100 provided in the embodiment of the present application includes a network device 101 and a

terminal device

102 and 107.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or other processing device connected to a wireless modem. Wireless terminals, which may be mobile terminals such as mobile telephones (or "cellular" telephones) and computers having mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted mobile devices, may communicate with one or more core networks via a Radio Access Network (RAN). For example, a User Equipment (UE), a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and the like. A wireless terminal may also be referred to as a system, a subscriber unit (subscriber station), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal (remote terminal), an access terminal (access terminal), a user terminal (user terminal), a user agent (user agent), a user device (user device), or a user equipment (user equipment). By way of example, the terminal device may be a high-speed rail communication device 102, a smart air conditioner 103, a smart fuel dispenser 104, a mobile phone 105, a smart tea cup 106, a printer 107, and the like, and the application is not limited thereto.

The network device according to the embodiment of the present application may be a base station, and the base station may be configured to perform inter-conversion between a received air frame and an Internet Protocol (IP) packet, and may be used as a router between the wireless terminal and the rest of the access network, where the rest of the access network may include an IP network device. The base station may also coordinate management of attributes for the air interface. For example, the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, a base station (NodeB) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB or e-NodeB) in LTE, or a gNB in 5G, which is not limited in the embodiments of the present application. The base stations are only examples, and the network device may also be a relay station, an access point, a vehicle-mounted device, a wearable device, and other types of devices.

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

The terminal device 105 may include: radio Frequency (RF) circuit 110, memory 120, input unit 130, display unit 140, sensor 150, audio circuit 160, 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 information transmission and reception or during a call, and may receive downlink data of a base station and then send the downlink data to the processor 180 for processing; the uplink data may be transmitted to the base station. Typically, the RF circuitry includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 120 may be used to store software programs and data. The processor 180 executes various functions of the terminal device 105 and data processing by executing software programs or data stored in the memory 120. The 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 enabling the terminal device 105 to operate, such as developed by apple Inc

Operating System, developed by Google

Open source operating system, developed by Microsoft corporation

An operating system, etc. The memory 120 may store an operating system and various application programs, and may also store codes for performing the methods of the embodiments of the present application.

The input unit 130 (e.g., a touch screen) may be used to receive input numeric or character information, generate signal inputs related to user settings and function control of the terminal device 105. Specifically, the input unit 130 may include a touch screen 131 disposed on the front surface of the terminal device 105, and may collect a touch operation by a user thereon or nearby.

The display unit 140 (i.e., a display screen) may be used to display information input by or provided to the user and a Graphical User Interface (GUI) of various menus of the terminal apparatus 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 herein. The touch screen 131 may be covered on the display screen 141, or the touch screen 131 and the display screen 141 may be integrated to implement the input and output functions of the terminal device 105, and after the integration, the touch screen may be referred to as a touch display screen for short.

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 a gyroscope, barometer, hygrometer, thermometer, infrared sensor, and the like.

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

Wi-Fi belongs to short-range wireless transmission technology, and the terminal device 105 can help a user receive e-mails, browse webpages, access streaming media and the like through the Wi-Fi module 170, and provides wireless broadband Internet access 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 herein, and processor 180 may include one or more processing units; the processor 180 may also integrate an application processor, which primarily handles operating systems, user interfaces, applications, etc., and a baseband processor, which 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 may run an operating system, an application program, a user interface display, a touch response, and the communication method described in the embodiments of the present application.

And 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 smart watch) also equipped with a bluetooth module through the bluetooth module 181, so as to perform data interaction.

The terminal device 105 also includes a power supply 190 (such as a battery) that powers the various components. The power supply may be logically coupled to the processor 180 through a power management system to manage charging, discharging, and power consumption functions 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 Unit (RRU) 310 and one or more baseband units (BBUs) (which may also be 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 circuit, transceiver, transmitter and receiver, etc., which may include at least one antenna 311 and RF circuit 312. Alternatively, the transceiver 310 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit). The RRU 310 is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals, for example, for sending indication information to a terminal device. The BBU 320 is mainly used for performing baseband processing, controlling network devices, and the like. The RRU 310 and the BBU 320 may be physically located together or may be physically located separately, i.e. distributed base stations.

The BBU 320 is a control center of a network device, and may also be referred to as a processing unit, and is mainly used for completing baseband processing functions, such as channel coding, multiplexing, modulation, spreading, and the like. For example, the BBU 320 can be used to control a network device to perform the methods described herein.

In an example, the BBU 320 may be formed by one or more boards, and the boards may support a radio access network of a single access system (e.g., an LTE network) together, or may support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks) respectively. The BBU 320 also includes 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 present application. Processor 321 may refer to one or more processors in this application. The memory 322 and the processor 321 may serve one or more boards. That is, the memory and processor may be provided separately on each board. Multiple boards may 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-described embodiment, and may be in another embodiment: for example: the antenna comprises a BBU (baseband unit) and an Adaptive Radio Unit (ARU), or the BBU and an Active Antenna Unit (AAU); the present invention may be a Customer Premise Equipment (CPE), or may be in other forms, and the present invention is not limited thereto.

Some concepts to which this application relates will first be described:

power Headroom Report (PHR):

from the 4th generation (4G) Long Term Evolution (LTE) communication system, the PHR is an important component of the uplink power control related protocol. The PHR-related protocol is basically followed in the 5G communication system.

The PHR is mainly used for the terminal device to periodically report the difference between the uplink channel estimated power and the maximum transmission power of the terminal device to the network, so that the network device can perform more appropriate scheduling on the terminal device. The PHR-related protocol belongs to a protocol of a Media Access Control (MAC) layer, and a terminal device reports a Power Headroom (PH) through a media access control element (MAC CE). In the early LTE release, a 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, and the PH represents Power Headroom (PH), occupies six bits, and its value takes 2dB as an interval, covering from-32 dB to +38 dB.

The PH has various fine categories, but the calculation formula is similar, taking the type1 (type1) PH in the New Radio (NR) protocol as an example, the calculation formula is as shown in formula 1:

wherein, P_CMAX,f,c(i) The meaning of the equation indicates the maximum transmission power Pcmax of the terminal device, and the difference between the maximum transmission power Pcmax and the equation is the calculated transmission power of a Physical Uplink Shared Channel (PUSCH). Wherein the maximum transmission power P of the terminal device_CMAXThe definition of (2) is slightly different under different scenes of 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_PowerClassequation 4

P_CMAX,f,cIs mainly calculated by formula 3_{CMAX_L,f,c}And (6) determining.

In the above formula,. DELTA.T_C,cIs a fixed value related to whether a bin is at the Band (Band) edge. A-MPR_cThe network device additionally configures the terminal device in RRC signaling. Delta T_IB,cIs an additional allowed power relaxation to support Carrier Aggregation (CA) or (DC). Delta T_RxSRSIs a power offset associated with a Sounding Reference Signal (SRS) channel. The maximum output power reduction (MPR) is a power reduction related to a modulation scheme or the like, and the P-MPR is a power reduction related to SAR/MPE.

The MAX (MPR) in the above formula 3_c,A-MPR_c)+ΔT_IB,c+ΔT_C,c+ΔT_RxSRSAbbreviated to xMPR and the fixed quantities are simplified to:

P_{CMAX_L,f,c}＝P_PowerClass-MAX(xMPR_c,P-MPR_c) Equation 5

Wherein, P_PowerClassFor the maximum power of the terminal device as specified by the protocol shown in table 1, power class 2(power class 2) corresponds to 26dBm and power class 3(power class 3) corresponds to 23 dBm.

TABLE 1

In summary, the PH reports and the maximum transmission power P of the terminal device after fallback_CMAXAnd 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 passes through a first lineThere is still a 3dB power margin left after column power backoff, but the network device cannot know exactly the true transmit power of the terminal device.

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

As shown in fig. 5, before the reporting structure shown in fig. 4, a plurality of PHR presence indicators C are added_i，C_iThe serving cell with serving cell index (ServCellIndex) of i has PH reporting as indicated by 1. One reserved bit of two reserved bits R in the eight bits of the original reporting structure is redefined as V to indicate whether the calculation mode of the PH is according to the transmission of the real PUSCH. After the original reporting structure, eight new bits are added for reporting the maximum transmitting power P of the terminal equipment_CMAXWherein the first two bits are reserved bits, and the maximum transmission power P_CMAXOccupies six bits, and takes 1dB as an interval, and covers from-29 dBm to 33 dBm.

Terminal equipment reports maximum transmitting power P_CMAXThen, the network device can know the actual transmission power of the terminal device in addition to the power margin of the transmission power of the terminal device. Suppose a terminal device reports PH, where V is 0, PH is 0dB, P_CMAXAt 20dBm, the network device may back out:

v ═ 0 indicates that the current report is the PH reported according to the transmission power calculated by the real PUSCH.

PH 0 indicates that the power margin of the transmission power of the current reporting terminal device is 0.

PH is 0 and P_CMAX20 means that the transmission power of the PUSCH calculated at this time is 20dBm, and the real transmission power is also 20 dBm;

P_CMAX20 indicates that the uplink power of the terminal device is limited, and the limit size is 3 dB.

As shown in fig. 6, the R11 version of LTE introduces bit P, which is equal to1 represents the maximum transmission power P in PH reporting_CMAXIs less than P_PowerClassThe reason for (a) is P-MPRC.

With the bit P, the network device can know the maximum transmission power P of the terminal device_CMAXFor specific reasons of limitation, and then treated separately. For example, P-1 denotes the maximum transmission power P of the terminal device_CMAXThe limitation is due to SAR/MPE and the like, and the network equipment can improve the transmitting power of the terminal equipment by reducing uplink scheduling and the like, so that the aim of better overall network performance is fulfilled. P-0 represents the maximum transmission power P of the terminal device_CMAXThe limited reason is xMPR, which is mainly caused by an uplink adjustment mode, waveform characteristics, and the like, and the network device may correspondingly improve the transmission power of the terminal device by changing the adjustment mode and the like, thereby achieving the purpose of improving the overall performance.

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

the maximum transmission power of FR1 has been described above and will not be repeated here. The following focuses on the maximum transmission power of FR 2.

In FR2, the terminal device is divided into four power classes (power class), where power class 1 corresponds to a Fixed Wireless Access (FWA) terminal device, power class 2 corresponds to a vehicle (vehicular) terminal device, power class 3 corresponds to a handheld (dhheld) terminal device, and power class 4 corresponds to a high power non-handheld (high power non-dhheld) terminal device. The mobile phone generally belongs to power class 3, taking power class 3 as an example: the lower limit of the Effective Isotropic Radiated Power (EIRP) for power level 3 is defined in table 2, and the upper limit of the Total Radiated Power (TRP) and EIRP for power level 3 is defined in table 3.

TABLE 2

TABLE 3

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

Maximum transmission power P of terminal equipment in FR2_CMAXDefinition includes P_UMAXAnd P_TMAXTwo dimensions, P_UMAXAnd P_TMAXWithin the following ranges:

P_TMAX,f,c≤TRP_maxequation 7

Wherein, P_UMAXIs a range with an upper limit of EIRP_maxThe lower limit is similar to FR1, with xMPR (in the case of FR2, xMPR is MAX (MPR)_f,c,A-MPR_f,c)+ΔMB_P,n) And P-MPR. Delta MB_P,nIs the additional power backoff allowed when the terminal device supports multiple frequency bands of FR 2. The definition of the function T () in equation 6 is shown in table 4:

TABLE 4

Let the lower limit of equation 6 be P_CMAXAnd after the sequence is adjusted, write as:

comparing formula 5 of FR1, maximum power P of FR2_PowerClassIs a range, and the range of the T function is also large, so that it is impossible to reverse the sizes of xMPR and P-MPR from the report of PH as in FR 1.

Electromagnetic wave absorption ratio (SAR), Maximum Permissible Exposure (MPE):

SAR is also called specific absorption rate, which is the ratio of absorption of electromagnetic wave energy of a human body to that of a mobile phone or a wireless product. Under the action of the external electromagnetic field, an induction electromagnetic field is generated in the human body. The differential value over time of the energy elements (dW) absorbed (dissipated) by the mass elements (dm) in the volume elements (dV) of a given density (ρ) is SAR in W/kg. As shown in equation 9:

wherein E represents the electric field intensity value in the tissue and the unit is V/m; rho represents the density of substances corresponding to different parts of the human body; δ represents the conductivity.

What the SAR measuring device detects is the magnitude and distribution of the electric field intensity value E, which is then converted into the value of SAR by calculation. And determining whether the radiation of terminal equipment such as a mobile phone exceeds a standard or not according to the SAR value.

The main certification authorities for SAR are FCC and european consortium (compact europe, CE).

Generally, terminal devices operating in FR1 use SAR to assess the effect of ionizing radiation on the human body. Terminal devices operating in FR2 have poor penetration of electromagnetic waves due to their high frequency, and the maximum permissible MPE exposure is generally used to evaluate the effect of ionizing radiation on the human body (FCC uses MPE and CE uses EMF).

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

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

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

Existing SAR/MPE scheme of 5G protocol

Due to the introduction of high power terminal equipment and the higher EIRP resulting from the beam forming of FR2 millimeter waves, the terminal equipment becomes more and more challenging to meet SAR/MPE.

The 5G protocol currently has two main solutions for solving the SAR/MPE problem:

in the first scheme, P-MPR in PHR related protocol. And the terminal equipment automatically selects the P-MPR according to the use scene of the terminal equipment so as to ensure that the electromagnetic radiation requirement of a regulatory agency is met. The P-MPR may be more than 10dB or even 15dB in some scenarios.

In a second scheme, the NR 15 protocol introduces a maximum uplink duty cycle (maxuplinkdtycycle) of the capability item of the terminal device, which means that the terminal device indicates the maximum percentage of symbols that can be scheduled for uplink transmission within a certain evaluation period, so as to ensure compliance with the electromagnetic radiation requirements of the regulatory body. Specifically, the capacity item is divided into two sub-capacity items (maxuplinkdtycycler-PC 2-FR1 and maxuplinkdtycycler-FR 2) under FR1 and FR2, and reported respectively.

Currently, 3GPP is developing the 5G R16 protocol to increase the performance of MPE in FR2 scenarios. The aim is to avoid significant and unpredictable radio link failures and connection releases due to MPE cause by the end devices in FR 2.

Suppose the actual maximum transmit power of the FR1 terminal device is 23dBm and the following two PHR reports are shown in table 5:

reporting by PHR for the first time: the xMPR is 3dB, and the P-MPR is 0 dB; the terminal device can calculate the maximum transmitting power P of the terminal device according to formula 5_CMAX,f,c23-3-20 dBm, then may be as shown in fig. 6Reporting the PHR. Wherein the bit position P is 0.

Reporting by PHR for the second time: the xMPR is 3dB, and the P-MPR is 5 dB; the terminal device can calculate the maximum transmitting power P of the terminal device according to formula 5_CMAX,f,c23-5-18 dBm, and then the PHR may be reported in the format as shown in fig. 6. Wherein bit position P is 1.

TABLE 5

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

For FR2, the transmission power P_PowerClassInstead of a fixed value, a value range, the network device cannot reversely derive xMPR or P-MPR according to equation 8.

In FR2, the method for reporting and sending power headroom provided by the present application uses P in formula 8_PowerClassReplacing the reference quantity P which can be determined by both the network equipment and the terminal equipment_{CMAX_ref}Thereby obtaining the maximum transmission power P calculated according to equation 8_CMAX,f,cThis enables the network device and the terminal device to transmit at the maximum power P_CMAX,f,cThe understanding of (1) is kept consistent, so that the MPR or the P-MPR can be accurately deduced from the report of the PHR.

As shown in fig. 7, a method for reporting and sending power headroom according to an embodiment of the present application includes:

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

The first indication information is used for indicating the preset transmitting power P of the terminal equipment_{CMAX_ref}I.e. as reference quantities as described hereinbefore. The first indication information may be a real maximum transmission power of the terminal device, a maximum transmission power of an antenna port of the terminal device, or an undefined value.

The terminal device operates in FR 2.

Second fingerThe indication information is used for indicating the maximum transmitting power P of the terminal equipment_CMAX,f,c. Maximum transmission power P for terminal equipment_CMAX,f,cAs described above, it 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_{CMAX_ref}As the first indication information, P-MPR_f,cFor P-MPR, xMPR denotes the corrected value of MPR, which may be MAX (MPR) as previously defined_f,c,A-MPR_f,c)+ΔMB_P,nThen equation 10 can 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_{CMAX_ref}As the first indication information, MPR_f,cIs MPR, P-MPR_f,cIs P-MPR, f is carrier index, c is serving cell index, Δ MB_P,nIs the additional power backoff allowed when the terminal device supports multiple FR2 bands.

In the protocol TS 38.306, there are three places where the power class of the terminal device is involved, as shown in tables 6-8.

TABLE 6

TABLE 7

TABLE 8

The present application may define 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. That is, the first indication information may be used to indicate a preset transmission power of the terminal device in a Carrier Aggregation (CA) or Dual Connectivity (DC) scenario.

Watch 10

It should be noted that the values of Ue-Pcmax _ ref-for-PHR and Ue-CA-Pcmax _ ref-for-PHR may be the same or different.

Along with the evolution of the protocol, if a new DC/CA combination type exists or a scene needing to report the first indication information exists, corresponding capability items and signaling report fields can be correspondingly added according to the idea of the application.

In one possible embodiment, the first indication information may be a default value, e.g., 23dBm, specified by a protocol or known by the terminal device and the network device. The default value may be determined from the Power Class (PC) of FR2, or may be determined from various combinations of CA/DC. Thus, the terminal device does not need to inform the network device of the first indication information, and the network device and the terminal device do not need to inform the network device of the maximum transmission power P_CMAX,f,cCan maintain understanding ofAnd (5) the consistency is achieved.

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 adopt a default value (for example, 23dBm) 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 adopt a current value of the first indication information.

In a possible embodiment, the first indication information may be carried in Radio Resource Control (RRC) signaling, and optionally, the value may be reported in a UE capability report of the RRC signaling.

Alternatively, in another possible embodiment, the first indication information may also be carried in a MAC CE or Uplink Control Information (UCI), which is not limited in this application. The present application takes the bearer in the RRC signaling as an example, but is not intended to be limited thereto.

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

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

The maximum transmission power P of the terminal is specified in the protocol TS 38.133_CMAX,f,cOccupies six bits, and the value of the six bits is separated by 1dB and ranges from-29 dBm to 33 dBm.

In order to meet various requirements of a protocol on the output power of the terminal equipment, the terminal equipment needs to be calibrated before leaving a factory; for FR1, a calibration method of radio frequency direct connection is generally adopted. However, for FR2, since there is no radio frequency direct interface like FR1, an air interface calibration method is generally adopted. The upper limit of EIRP of a terminal device of power class 1 in FR2 is 55dBm, which is outside the range of effective resolution reported by the PHR.

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

S702, the terminal equipment sends the PHR.

Accordingly, the network device receives the PHR.

Wherein, the PHR includes 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 the bit P described above.

S703, the network device determines the xMPR or the 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 is 0), the network device may calculate the obtained xMPR according to equation 12:

xMPR_f,c＝P_{CMAX_ref}-P_CMAX,f,cequation 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 is 1), the network device may calculate to obtain the P-MPR according to equation 13_f,c：

P-MPR_f,c＝P_{CMAX_ref}-P_CMAX,f,cEquation 13

Wherein, P_{CMAX_ref}Is first indication information, P_CMAX,f,cIs the second indication information.

For example, assume a terminal operating in FR2 with an EIRP of 35 dBm.

Reporting by PHR for the first time: the xMPR is 3dB, and the P-MPR is 0 dB.

Reporting by PHR for the second time: the xMPR is 3dB, and the P-MPR is 5 dB.

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}A default value, for example 23 dBm.

For the first PHR report, the terminal device may calculate the maximum transmit power P according to equation 10_CMAX,f,c23-3-20 dBm, the PHR may then be reported in the format shown in fig. 6. Where bit P is set to 0. Accordingly, the network device may calculate xMPR 23-20 dB 3dB 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,c23-5-18 dBm, and then the PHR may be reported in the format shown in fig. 6. Where bit position P is set to 1. Accordingly, the network device may calculate the P-MPR of 23-18 of 5dB according to equation 13.

TABLE 11

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

For the first PHR report, the terminal device may calculate the maximum transmit power P according to equation 10_CMAX,f,c33-3-30 dBm, and then the PHR may be reported in the format shown in fig. 6. Where bit P is set to 0. Accordingly, the network device may calculate xmrp 33-30 dB 3dB 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,c33-5-28 dBm, and then the PHR may be reported in the format shown in fig. 6. Where bit position P is set to 1. Accordingly, the network device may calculate the P-MPR of 33-28 of 5dB according to equation 13.

TABLE 12

According to the method for reporting and sending the power headroom, second indication information is obtained according to one of a correction value of a maximum output power backoff (MPR), a power management maximum output power backoff (P-MPR) and first indication information, wherein the first indication information is used for indicating preset transmission power of terminal equipment, the second indication information is used for indicating the maximum transmission power of the terminal equipment, and the terminal equipment works in a frequency range 2; and reporting the PHR by the transmission 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 corrected 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 indication information can be known by the network equipment and the terminal equipment, and the maximum transmitting power of the terminal equipment calculated according to the first indication information is the same, so that the network equipment and the terminal equipment can keep consistent understanding of the maximum transmitting power, and the xMPR or the P-MPR can be accurately and reversely deduced from the report of the PHR. The method and the device realize that the network equipment can reversely deduce the value of the xMPR/P-MPR according to the PHR reported by the terminal equipment in the FR2 scene.

It is to be understood that, in the above embodiments, the method and/or the step implemented by the terminal device may also be implemented by a component (e.g., a chip or a circuit) available for the terminal device, and the method and/or the step implemented by the network device may also be implemented by a component available for the network device.

The above-mentioned scheme provided by the embodiment of the present application is introduced mainly from the perspective of interaction between network elements. Correspondingly, the embodiment of the application also provides a communication device, and the communication device is used for realizing the various methods. The communication device may be the 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 the network device in the above method embodiment, or a device including the above network device, or a chip or a functional module in the network device. It is to be understood that the communication device comprises corresponding hardware structures and/or software modules for performing the respective functions in order to realize the above-mentioned 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 performed as hardware or computer software drives 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.

In the embodiment of the present application, the communication apparatus may be divided into functional modules according to the method embodiments, for example, each functional module may be divided according to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a form of hardware or a form of a software functional module. It should be noted that the division of the modules in the embodiment of the present application is illustrative, and is only one logical function division, and in actual implementation, there may be another division manner.

For example, the communication device is taken as 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 transceiver module 8002. The communication device 80 may be the terminal device in fig. 7. The processing module 8001 may also be referred to as a processing unit, and is configured to implement the processing function of the terminal device in the foregoing method embodiment. For example, step S701 in fig. 7 is performed. The transceiver block 8002 may also be referred to as a transceiver unit, and is configured to implement the transceiver function of the terminal device in the foregoing method embodiment. For example, step S702 in fig. 7 is performed. The transceiver block 8002 may be referred to as a transceiver circuit, a transceiver, or a communication interface.

Illustratively, the processing block 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 backoff MPR and the power management maximum output power backoff 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 the frequency range 2.

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 from a correction value of the MPR and the first indication information, or indicate that the second indication information is obtained from the P-MPR and the first indication information.

In a possible implementation, the transceiver block 8002 is also used to: and sending the first indication information.

In a possible implementation, the processing block 8001 is specifically configured to: calculating to obtain second indication information P 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}As first indication information, xMPR_f,cFor correction of MPR, P-MPR_f,cIs P-MPR.

In the present embodiment, the communication device 80 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other components that provide the described functionality. In a simple embodiment, the communication means 80 may take the form of the terminal device 105 shown in fig. 2, as will be appreciated by those skilled in the art.

For example, the processor 180 in the terminal device 105 shown in fig. 2 may execute the instructions by calling a computer stored in the memory 120, so that the terminal device 105 executes the method in the above-described method embodiment.

In particular, the functions/implementation procedures of processing block 8001 of fig. 8 may be implemented by processor 180 of terminal device 105 of fig. 2 calling computer-executable instructions stored in memory 120. Alternatively, the function/implementation process of the transceiver block 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 execute the method, the technical effects obtained by the method can be obtained by referring to the method embodiments, which are not described herein again.

For example, the communication device is taken as the network device in the above 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 device 80 may be the network device in fig. 7. The processing module 9001 may also be referred to as a processing unit to implement the processing function of the network device in the above method embodiments. For example, step S703 in fig. 7 is performed. The transceiving module 9002, which may also be referred to as a transceiving unit, is configured to implement transceiving functions of the network device in the foregoing method embodiments. For example, step S702 in fig. 7 is performed. The transceiver module 9002 may be referred to as a transceiver circuit, a transceiver, or a communication interface.

Illustratively, 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 transmit power of a terminal device, the third indication information is used to indicate that the second indication information is obtained from a modification value of a maximum output power backoff MPR and the first indication information, or indicate that the second indication information is obtained from a power management maximum output power backoff P-MPR and the first indication information, and the first indication information is used to indicate a preset transmit power of the terminal device.

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

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

In one possible implementation, the processing module 9001 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, 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,cOr the third indication information indicates that the second indication information is obtained by P-MPR and the first indication information, and the P-MPR is obtained by calculation according to the following formula_f,c：P-MPR_f,c＝P_{CMAX_ref}-P_CMAX,f,cWherein P is_{CMAX_ref}Is first indication information, P_CMAX,f,cIs the second indication information.

In the present embodiment, the communication device 90 is presented in a form of dividing each functional module in an integrated manner. A "module" herein may refer to a particular ASIC, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other components that provide the described functionality. In a simple embodiment, those 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 execute the instructions by calling a computer stored in the memory 302, so that the network device 300 executes the method in the above-described method embodiment.

In particular, the functions/implementation processes 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 executable instructions stored in the memory 322. Alternatively, the function/implementation process of the transceiving 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 execute the method, the technical effects obtained by the method can be obtained by referring to the method embodiments, which are not described herein again.

Embodiments of the present application further provide a communication apparatus, which includes a processor, a memory, and a transceiver, where the processor is coupled to the memory, and when the processor executes a computer program or instructions in the memory, the method corresponding to the terminal device in fig. 7 is performed.

Embodiments of the present application further provide a communication apparatus, which includes a processor, a memory, and a transceiver, where the processor is coupled with the memory, and when the processor executes a computer program or instructions in the memory, the method corresponding to the network device in fig. 7 is performed.

An embodiment of the present application further provides a chip, including: and the processor and the interface are used for calling and running the computer program stored in the memory from the memory to execute the corresponding method of the terminal equipment or the network equipment in the figure 7.

The embodiment of the present application further provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the instructions are executed on a computer or a processor, the computer or the processor is caused to execute a method corresponding to the terminal device or the network device in fig. 7.

The embodiment of the present application further provides a computer program product containing instructions, which when executed on a computer or a processor, cause the computer or the processor to execute the method corresponding to the terminal device or the network device in fig. 7.

An embodiment of the present application provides a chip system, where the chip system includes a processor, and is used for a communication device to execute a method corresponding to a terminal device or a network device in fig. 7.

In one possible design, the system-on-chip 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, and may also include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.

The communication device, the chip, the computer storage medium, the computer program product, or the chip system provided in the present application are all configured to execute the method described above, and therefore, the beneficial effects achieved by the communication device, the chip, the computer storage medium, the computer program product, or the chip system may refer to the beneficial effects in the embodiments provided above, and are not described herein again.

The processor related to the embodiment of the application may be a chip. For example, the Field Programmable Gate Array (FPGA) may be an Application Specific Integrated Circuit (ASIC), a system on chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a digital signal processing circuit (DSP), a Micro Controller Unit (MCU), a Programmable Logic Device (PLD) or other integrated chips.

The memory referred to in embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile 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. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM, enhanced SDRAM, SLDRAM, Synchronous Link DRAM (SLDRAM), and direct 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 the various embodiments of the present application, the size of the serial number of each process described above does not mean that the execution sequence of each process is preceded by 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 to 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 implementation. 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 is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

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 device embodiments are merely illustrative, and for example, the division of the units is only one logical functional 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.

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

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented using a software program, 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. The procedures or functions described in accordance with the embodiments of the present application are all or partially generated upon loading and execution of computer program instructions on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (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 can comprise one or more data storage devices, such as servers, data centers, etc., that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by 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. A method for reporting and sending power headroom, comprising:

obtaining second indication information according to the correction value of the maximum output power backoff (MPR), one of power management maximum output power backoff (P-MPR) and first indication information, wherein the first indication information is used for indicating preset transmission power of a terminal device, the second indication information is used for indicating the maximum transmission power of the terminal device, and the terminal device operates in a frequency range 2;

and reporting a PHR (power headroom report), wherein the PHR comprises the 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.

2. The method of claim 1, wherein the first indication information is a default value known to a terminal device and a network device, or wherein the first indication information is determined according to a power class of a frequency range 2, or wherein the first indication information is determined according to various combinations of Carrier Aggregation (CA) or Dual Connectivity (DC).

3. The method of claim 1, further comprising:

and sending the first indication information.

4. The method of claim 3, wherein the first indication information is carried in Radio Resource Control (RRC) signaling.

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

6. The method according to any of claims 1-5, wherein obtaining the second indication information according to the first indication information and one of the correction value of the maximum output power backoff (MPR) and a power management maximum output power backoff (P-MPR) comprises:

calculating to obtain second indication information P 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_{CMAX_ref}For the first indication information, xMPR_f,cAs a correction value for the MPR, P-MPR_f,cIs the P-MPR.

7. A method for reporting and sending power headroom, comprising:

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 transmission power of a terminal device, the third indication information is used for indicating that the second indication information is obtained by a modification value of a maximum output power backoff (MPR) and first indication information, or indicating that the second indication information is obtained by a power management maximum output power backoff (P-MPR) and the first indication information, and the first indication information is used for indicating the preset transmission power of the terminal device;

determining the 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 a terminal device and a network device, or wherein the first indication information is determined according to a power class of a 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, further comprising:

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 of claim 10, wherein the first indication information is carried in a UE capability report of the RRC signaling.

12. The method of any of claims 7-11, wherein the determining the correction value for the MPR or the 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 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,

the third indication information indicates that the second indication information is composed of the P-MPR and the first indication informationObtaining the P-MPR by calculation according to the following formula_f,c：

P-MPR_f,c＝P_{CMAX_ref}-P_CMAX,f,c，

Wherein, P_{CMAX_ref}For the first indication information, P_CMAX,f,cIs the second indication information.

13. A communications apparatus, comprising:

a processing module, configured to obtain second indication information according to a modification value of a maximum output power backoff (MPR), one of a power management maximum output power backoff (P-MPR), and first indication information, where the first indication information is used to indicate a preset transmit power of a terminal device, the second indication information is used to indicate a maximum transmit power of the terminal device, and the terminal device operates in a frequency range 2;

a transceiver module, configured to send a Power Headroom Report (PHR), where the PHR includes the 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 indicate 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 a terminal device and a 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).

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 UE capability report of the RRC signaling.

18. The apparatus according to any one of claims 13 to 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 communications apparatus, comprising:

a transceiver module, 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 transmit power of a terminal device, the third indication information is used to indicate that the second indication information is obtained from a modification value of a maximum output power backoff (MPR) and first indication information, or indicate that the second indication information is obtained from a power management maximum output power backoff (P-MPR) and the first indication information, and the first indication information is used to indicate a preset transmit power of the terminal device;

a processing module, configured to determine a 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 a terminal device and a 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).

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 UE capability report of the RRC signaling.

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

xMPR_f,c＝P_{CMAX_ref}-P_CMAX,f,c，

Or,

the third indication information indicates that the second indication information is obtained by the P-MPR and the first indication information, and the P-MPR is obtained by calculation according to the following formula_f,c：

P-MPR_f,c＝P_{CMAX_ref}-P_CMAX,f,c，

25. A computer-readable storage medium having stored therein instructions 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.