CN114175755A

CN114175755A - Power value determination method, device and system

Info

Publication number: CN114175755A
Application number: CN201980098988.0A
Authority: CN
Inventors: 张茜; 冯淑兰; 邓猛; 刘烨
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2022-03-11
Also published as: WO2021026934A1

Abstract

The embodiment of the application provides a method, a device and a system for determining a power value, which can reduce the probability of excessive back-off of the transmitting power of terminal equipment and improve the power gain so as to enhance uplink coverage. In the method, a terminal device determines a back-off value of maximum transmission power corresponding to a first power class, where the back-off value belongs to a first value set, the first value set includes at least two values, a maximum value in the first value set is a difference between the maximum transmission power corresponding to the first power class and a maximum transmission power corresponding to a second power class, a minimum value in the first value set is 0, the first power class is a current power class of the terminal device, and the second power class is a preset power class lower than the first power class; and the terminal equipment determines the maximum configuration transmitting power according to the back-off value, wherein the maximum configuration transmitting power is used for determining the transmitting power when the terminal equipment carries out uplink transmission.

Description

Power value determination method, device and system

Technical Field

The present application relates to the field of communications, and in particular, to a method, an apparatus, and a system for determining a power value.

Background

In a New Radio (NR) system (also referred to as a 5th-generation (5G) system), the transmission power levels of the terminal devices can be divided into a power class 2 (PC 2) and a power class 3 (PC 3), where each transmission power class corresponds to a power class power P_PowerClassOf the P_PowerClassIndicating the maximum transmission power of the terminal device in a certain frequency band at the power level corresponding to the maximum transmission power, P corresponding to power level 2_PowerClassP for 26dBm, power class 3_PowerClassAnd 23 dBm.

In general, in order to satisfy a Specific Absorption Rate (SAR) index, a terminal device capable of supporting the PC2 needs to perform a power class backoff in some cases, and a backoff value Δ P of a maximum transmission power corresponding to the PC2 is defined in an existing protocol when the power class backoff is performed_PowerClass3dB, i.e. the terminal device is backed from PC2 to PC 3.

However, when the performance of the terminal device is good, the maximum transmission power corresponding to the power level may meet the SAR index without 3dB backoff, and at this time, if the terminal device still backs off 3dB according to the existing protocol, excessive backoff of the transmission power may be caused, which may cause a reduction in the power gain of the terminal device and affect uplink coverage.

Disclosure of Invention

The embodiment of the application provides a method, equipment and a system for determining a power value, which can improve power gain so as to enhance uplink coverage.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, a method for determining a power value and a corresponding apparatus are provided. In the scheme, a terminal device determines a back-off value of maximum transmission power corresponding to a first power class, where the back-off value belongs to a first value set, the first value set includes at least two values, a maximum value in the first value set is a difference between the maximum transmission power corresponding to the first power class and a maximum transmission power corresponding to a second power class, a minimum value in the first value set is 0, the first power class is a current power class of the terminal device, and the second power class is a preset power class lower than the first power class; and the terminal equipment determines the maximum configuration transmitting power according to the back-off value, wherein the maximum configuration transmitting power is used for determining the transmitting power when the terminal equipment carries out uplink transmission.

Based on the scheme, the terminal device determines a back-off value of the maximum transmission power corresponding to the first power class, when the terminal device does not determine the back-off value as the maximum value in the first value set, the back-off value is smaller than a difference value between the maximum transmission power corresponding to the first power class and the maximum transmission power corresponding to the second power class, and when the first power class is PC2 and the second power class is PC3, the back-off value is smaller than 3dB, so that the maximum configuration power determined by the terminal device according to the back-off value is not too low, the probability of excessive back-off of the transmission power can be reduced, and the power gain is increased to enhance uplink coverage.

In one possible design, the power value determining method further includes: and the terminal equipment sends the back-off value of the maximum transmission power corresponding to the first power level to the network equipment. Based on the scheme, since the backoff behavior of the maximum transmission power corresponding to the power class of the terminal device may affect the configuration of the network device on some parameters of the terminal device, the terminal device may report the backoff value to the network device, so that the network device may perform subsequent configuration.

In one possible design, the determining, by the terminal device, a backoff value of a maximum transmit power corresponding to the first power class includes: and if the maximum transmitting power configured by the network equipment is less than or equal to 23dBm, the terminal equipment determines the back-off value as the minimum value in the first value set.

In one possible design, the determining, by the terminal device, the maximum configured transmit power according to the backoff value includes: the terminal equipment determines the minimum value of the maximum configuration transmitting power according to the back-off value; the terminal device determines the maximum value of the maximum configuration transmitting power according to the maximum transmitting power corresponding to the first power class and the maximum transmitting power configured by the network device, or the terminal device determines the maximum value of the maximum configuration transmitting power according to the maximum transmitting power corresponding to the first power class, the maximum transmitting power configured by the network device and the back-off value; and the terminal equipment determines the maximum configuration transmitting power according to the minimum value and the maximum value.

In one possible design, the first set of numerical values belongs to a second set of numerical values, a maximum numerical value in the second set of numerical values is a difference between a maximum transmission power corresponding to a third power level and a maximum transmission power corresponding to the second power level, the third power level is a preset maximum power level, the third power level is greater than the first power level, and a minimum numerical value in the second set of numerical values is 0.

In a second aspect, a method for determining a power value and a corresponding apparatus are provided. In the scheme, a communication device determines a back-off value of maximum transmitting power corresponding to a first power level according to uplink transmission duty cycle information, the uplink transmission duty cycle information and the back-off value have a corresponding relationship, the uplink transmission duty cycle information is a maximum uplink transmission duty cycle energy value or a ratio of the maximum uplink transmission duty cycle energy value and an actual uplink transmission duty cycle, and the first power level is a current power level of a terminal device.

Based on the scheme, the terminal device determines a back-off value of the maximum transmitting power corresponding to the first power class, and when the terminal device determines that the back-off value is smaller than a difference value between the maximum transmitting power corresponding to the first power class and the maximum transmitting power corresponding to the second power class, the maximum configuration power determined by the terminal device according to the back-off value is not too low, so that the probability of excessive back-off of the transmitting power can be reduced, and the power gain is improved, so that the uplink coverage is enhanced.

In one possible embodiment, the communication device is a terminal or network device.

In one possible design, the uplink transmission duty cycle information is a maximum uplink transmission duty cycle energy value; the corresponding relationship between the maximum uplink transmission duty ratio energy value and the backoff value is as follows: delta P_PowerClass＝P _HP-dBm(p _HPMaximum uplink transmission duty cycle energy value). Wherein, Δ P_PowerClassIs the backoff value, P_HPIs the maximum transmission power, p, corresponding to the first power level_HPdBm (X) represents converting X in units of milliwatts to decibels dBm for a linear value of maximum transmit power for the first power level.

In one possible design, the uplink transmission duty ratio information is a ratio of the maximum uplink transmission duty ratio energy value to an actual uplink transmission duty ratio; if the ratio is smaller than 1, the corresponding relation between the ratio and the backspacing value is as follows: delta P_PowerClass＝10*ABS(log ₁₀(maximum uplink transmission duty ratio energy value/actual uplink transmission duty ratio)); wherein, Δ P_PowerClassFor the backoff value, abs (X) represents the absolute value of X.

In a possible design, if the communication device is a terminal device, the power value determining method further includes: and the terminal equipment determines the maximum configuration transmitting power according to the back-off value, wherein the maximum configuration transmitting power is used for determining the transmitting power when the terminal equipment carries out uplink transmission.

In a third aspect, a method for determining a power value and a corresponding device are provided. In the scheme, when the maximum transmission power configured by the network device is less than or equal to 23dBm, the terminal device determines a back-off value of the maximum transmission power corresponding to the first power class as 0. Based on the scheme, the terminal device determines the back-off value of the maximum transmission power corresponding to the first power class as 0, that is, the back-off value is determined to be lower than the difference value between the maximum transmission power corresponding to the first power class and the maximum transmission power corresponding to the second power class, so that the maximum configuration power determined by the terminal device according to the back-off value is not too low, the probability of excessive back-off of the transmission power can be reduced, and the power gain is improved, thereby enhancing the uplink coverage.

In a fourth aspect, a method and a corresponding apparatus for determining a power value are provided. In the scheme, the terminal device sends indication information to the network device, wherein the indication information indicates whether the terminal device needs to perform power backoff based on the first power class. When the indication information indicates that the terminal equipment does not need to perform power backoff based on the first power level, the terminal equipment determines a backoff value of maximum transmission power corresponding to the first power level to be 0. Based on the scheme, when the terminal device determines that the power back-off value does not need to be performed based on the first power level, the back-off value of the maximum transmission power corresponding to the first power level is determined to be 0, so that the maximum configuration power determined by the terminal device according to the back-off value is not too low, the probability of excessive back-off of the transmission power can be reduced, and the power gain is improved, so that the uplink coverage is enhanced.

In a fifth aspect, a communications apparatus is provided for implementing the various methods described above. The communication device may be the terminal device in the first aspect, the third aspect or the fourth aspect, or a device including the terminal device, or a device included in the terminal device, such as a chip; alternatively, the communication device may be the communication device of the second aspect, or a device including the communication device, or a device included in the communication device. The communication device includes corresponding modules, units, or means (means) for implementing the above methods, and the modules, units, or means may be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

In a sixth aspect, a communication apparatus is provided, including: a processor and a memory; the memory is configured to store computer instructions that, when executed by the processor, cause the communication device to perform the method of any of the above aspects. The communication device may be the terminal device in the first aspect, the third aspect or the fourth aspect, or a device including the terminal device, or a device included in the terminal device, such as a chip; alternatively, the communication device may be the communication device of the second aspect, or a device including the communication device, or a device included in the communication device.

In a seventh aspect, a communication apparatus is provided, including: a processor and an interface circuit, which may be a code/data read/write interface circuit, for receiving and transmitting computer-executable instructions (stored in, possibly read directly from, or possibly via other devices) to the processor; the processor is used for executing the computer-executable instructions to execute the method of any one of the above aspects.

In an eighth aspect, there is provided a communication apparatus comprising: a processor; the processor is configured to be coupled to the memory, and after reading the instructions in the memory, perform the method according to any one of the above aspects. The communication device may be the terminal device in the first aspect, the third aspect or the fourth aspect, or a device including the terminal device, or a device included in the terminal device, such as a chip; alternatively, the communication device may be the communication device of the second aspect, or a device including the communication device, or a device included in the communication device.

In a ninth aspect, there is provided a computer readable storage medium having stored therein instructions which, when run on a communication device, cause the communication device to perform the method of any of the above aspects. The communication device may be the terminal device in the first aspect, the third aspect or the fourth aspect, or a device including the terminal device, or a device included in the terminal device, such as a chip; alternatively, the communication device may be the communication device of the second aspect, or a device including the communication device, or a device included in the communication device.

A tenth aspect provides a computer program product comprising instructions which, when run on a communication device, cause the communication device to perform the method of any of the preceding aspects. The communication device may be the terminal device in the first aspect, the third aspect or the fourth aspect, or a device including the terminal device, or a device included in the terminal device, such as a chip; alternatively, the communication device may be the communication device of the second aspect, or a device including the communication device, or a device included in the communication device.

In an eleventh aspect, there is provided a communication device (which may be a chip or a system of chips, for example) comprising a processor for implementing the functionality referred to in any of the above aspects. In one possible design, the communication device further includes a memory for storing necessary program instructions and data. When the communication device is a chip system, the communication device may be constituted by a chip, or may include a chip and other discrete devices.

For technical effects brought by any one of the design manners of the fifth aspect to the eleventh aspect, reference may be made to the technical effects brought by different design manners of the first aspect, the second aspect, the third aspect, or the fourth aspect, and no further description is provided herein.

In a twelfth aspect, a communication system is provided, which includes a network device and the terminal device of the first aspect, the third aspect, or the fourth aspect.

A thirteenth aspect provides a communication system including, when the communication apparatus according to the second aspect is a terminal device, a network device and the communication apparatus according to the second aspect.

A fourteenth aspect provides a communication system, which includes a terminal device and the communication apparatus according to the second aspect, when the communication apparatus according to the second aspect is a network device.

Drawings

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

fig. 2 is a schematic structural diagram of a terminal device and a network device according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of another terminal device provided in an embodiment of the present application;

fig. 4 is a schematic flowchart of a power value determining method according to an embodiment of the present application;

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

fig. 6 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 7 is another schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

To facilitate understanding of the technical solutions of the embodiments of the present application, a brief description of related technologies or terms of the present application is first given as follows.

First, power level:

the transmit power level may be used to represent the maximum transmit power capability of the terminal device at that power level, which may be reported by the terminal device to the network device at a band (band) granularity. In the NR system, the transmission power levels of the terminal devices may be divided into PC2 and PC3, each transmission power level corresponding to a power level power indicating the maximum transmission power of the terminal device at its corresponding power level. For example, the maximum transmit power for each power class in a different frequency band may be as shown in table 1 below:

TABLE 1

Where dBm represents decibels in milliwatts and dB represents decibels.

As can be seen from table 1, currently, the PC1 does not define the maximum transmission power in each frequency band, and the PC2 defines the maximum transmission power only in a part of the frequency bands, wherein the tolerance represents the fluctuation value allowed by the maximum transmission power corresponding to the power level, for example, the tolerance corresponding to the maximum transmission power defined by the PC2 in the frequency band n79 is taken as an example, and +2/-3 may represent that the maximum transmission power corresponding to the PC2 is allowed to fluctuate upward by 2dB and downward by 3dB, that is, the maximum transmission power of the terminal device may be between 23dBm and 28 dBm.

Secondly, the method comprises the following steps: power class backoff:

currently, a terminal device capable of supporting the PC2 is specified in the protocol, and a fallback to the PC3 is required in the case where the back-off value Δ P of the maximum transmission power corresponding to the PC2 is set_PowerClassIs 3 dB: the maximum uplink transmission duty ratio (maxuplinkdycycle) capability value of the terminal device is default, and the actual uplink transmission duty ratio of the terminal device is more than 50%; or the terminal device reports the maximum uplink transmission duty ratio energy value of the terminal device to the network device, and the actual uplink transmission duty ratio of the terminal device is larger than the reported maximum uplink transmission duty ratio energy value; or the maximum transmitting power configured for the terminal equipment by the network equipment is less than or equal to 23 dBm.

The maximum uplink transmission duty ratio capability value indicates the uplink symbol transmission duty ratio of the terminal device capable of supporting the PC2 when the specific absorption rate index is satisfied, and if the maximum uplink transmission duty ratio capability value of the terminal device is default, that is, the terminal device does not report the maximum uplink transmission duty ratio capability value to the network device, the maximum uplink transmission duty ratio capability value of the terminal device is default to 50%.

Wherein the specific absorption rate, SAR value, represents the electromagnetic radiation energy (watts) absorbed per kilogram of human tissue, averaged over any 6 minute epoch. Taking mobile phone radiation as an example, SAR refers to the rate of electromagnetic radiation absorbed by soft tissues of a brain, the lower the SAR value, the less the electromagnetic radiation absorbed by the brain, and in general, the specific absorption rate is the influence of the electromagnetic radiation on a human body, and at present, there are two international and universal standards, one is european standard 2w/kg, which means that the electromagnetic radiation energy absorbed by each kilogram of human tissue cannot exceed 2 watts when timing 6 minutes, and the other is U.S. standard 1.6w/kg, which means that the electromagnetic radiation energy absorbed by each kilogram of human tissue cannot exceed 1.6 watts when timing 6 minutes.

Thirdly, power control:

that is, the terminal device controls (or adjusts) the real-time transmission power when performing uplink transmission on each physical channel, for example, taking a Physical Uplink Shared Channel (PUSCH) as an example, the real-time transmission power of the terminal device is P_CMAX,f,c(i) And

the smaller of the two terms.

Wherein, P_CMAX,f,c(i) Maximum configuration transmission power of the terminal device on the serving cell c and the carrier f (in the following embodiments, referred to as maximum configuration transmission power of the terminal device for short); p_{O_PUSCH,b,f,c}(j) A configuration value of a Power Spectral Density (PSD) of a target power spectrum with a cell or a terminal device as a granularity, configured to the terminal device through a network device;

a serving cell c configured for a terminal device for a network device, a carrier f, and a PUSCH resource size corresponding to a transmission opportunity i in an activated uplink bandwidth part (BWP) b; PL_b,f,c(q _d) Indexing q for a terminal device by a Reference Signal (RS)_dCalculating a downlink path loss value; f. of_b,f,cA power adjustment value for closed loop power control issued by a network device via Transmit Power Control (TPC) commands.

Wherein, the value of the maximum configuration transmitting power of the terminal equipment is positioned at the upper limit value P_{CMAX_H,f,c}With a lower limit value P_{CMAX_L,f,c}In between, i.e. P_{CMAX_H,f,c}≤P _CMAX,f,c(i)≤P _{CMAX_L,f,c}That is, the terminal device may select P_{CMAX_H,f,c}And P_{CMAX_L,f,c}Any value in between as the maximum configured transmit power.

Wherein the terminal device may determine the upper limit value and the lower limit value according to the following formula:

P _{CMAX_H,f,c}＝min{P _EMAX,c，P _PowerClass-ΔP _PowerClass}；

P _{CMAX_L,f,c}＝min{P _EMAX,c-ΔT _C,c，(P _PowerClass-ΔP _PowerClass)-max(max(MPR _c，A-MPR _c)+Δ _IB,c+ΔT _C,c+ΔT _RxSRS，P-MPR _c)}；

wherein, P_EMAX,cA maximum transmit power configured for the network device; p_PowerClassPower for the above-described power classes; delta P_PowerClassA back-off value of the maximum transmission power corresponding to the power level; delta T_C,cRelaxation of the transmit power at the band edges; MPR (multi-reduction printed Circuit Board)_cThe power back-off value is allocated to different bandwidths and Resource Blocks (RBs) under the requirement of multiple radio frequency indexes; A-MPR_cAs accessoriesA power backoff value indicating that MPR may be in under certain network signaling_cFurther backing off the power value on the basis of backing off; delta_IB,cTo account for transmit power relaxation for inter-band carrier aggregation (inter-band carrier aggregation); delta T_RxSRSA gain difference between different antenna ports considered when a Sounding Reference Signal (SRS) is transmitted by a plurality of antennas in turn; P-MPR_cA power backoff value defined to take into account compliance with the specific absorption rate.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Where in the description of the present application, "/" indicates a relationship where the objects associated before and after are an "or", unless otherwise stated, for example, a/B may indicate a or B; in the present application, "and/or" is only an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. Also, in the description of the present application, "a plurality" means two or more than two unless otherwise specified. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or multiple. In addition, in order to facilitate clear description of technical solutions of the embodiments of the present application, in the embodiments of the present application, terms such as "first" and "second" are used to distinguish the same items or similar items having substantially the same functions and actions. Those skilled in the art will appreciate that the terms "first," "second," etc. do not denote any order or quantity, nor do the terms "first," "second," etc. denote any order or importance. Also, in the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or illustrations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present relevant concepts in a concrete fashion for ease of understanding.

The technical scheme of the embodiment of the application can be applied to various communication systems. For example: orthogonal Frequency Division Multiple Access (OFDMA), single carrier frequency division multiple access (SC-FDMA), 5G communication systems, and other systems. The term "system" may be used interchangeably with "network". The OFDMA system may implement wireless technologies such as evolved universal radio access (E-UTRA), Ultra Mobile Broadband (UMB), and the like. E-UTRA is an evolved version of the Universal Mobile Telecommunications System (UMTS). The third generation partnership project (3 GPP) is using a new version of the E-UTRA in Long Term Evolution (LTE) and various versions based on LTE evolution. The 5G communication system is a next-generation communication system under study. The 5G communication system includes a non-standalone (NSA) 5G mobile communication system, a Standalone (SA) 5G mobile communication system, or an NSA 5G mobile communication system and an SA 5G mobile communication system. In addition, the communication system can also be applied to future-oriented communication technologies, and the technical solutions provided by the embodiments of the present application are all applied. The above-mentioned communication system applicable to the present application is only an example, and the communication system applicable to the present application is not limited thereto, and is herein collectively described, and will not be described again.

As shown in fig. 1, a communication system 10 is provided in accordance with an embodiment of the present application. The communication system 10 includes a network device 20, and one or more terminal devices 30 connected to the network device 20. Alternatively, different terminal devices 30 may communicate with each other.

Optionally, the network device 20 in this embodiment is a device that accesses the terminal device 30 to a wireless network, and may be an evolved Node B (eNB or eNodeB) in LTE; or Base Transceiver Station (BTS) in GSM or CDMA; or a base station (NodeB) in a WCDMA system; or a base station in a 5G network or a Public Land Mobile Network (PLMN) in a future evolution, a broadband network service gateway (BNG), a convergence switch or a 3rd generation partnership project (3 GPP) access device, which is not specifically limited in this embodiment of the present invention. Optionally, the base station in the embodiment of the present application may include various forms of base stations, for example: macro base stations, micro base stations (also referred to as small stations), relay stations, access points, and the like, which are not specifically limited in this embodiment of the present application.

Optionally, the terminal device 30 in the embodiment of the present application may be a device for implementing a wireless communication function, such as a terminal or a chip that can be used in the terminal. The terminal may be a User Equipment (UE), an access terminal, a terminal unit, a terminal station, a mobile station, a remote terminal, a mobile device, a wireless communication device, a terminal agent or a terminal device in an LTE network or a PLMN for future evolution. An access terminal may be a cellular telephone, a cordless telephone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, or a wearable device, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. The terminal may be mobile or stationary.

Optionally, the network device 20 and the terminal device 30 in this embodiment may also be referred to as a communication apparatus, which may be a general device or a special device, and this is not specifically limited in this embodiment.

Optionally, as shown in fig. 2, a schematic structural diagram of the network device 20 and the terminal device 30 provided in the embodiment of the present application is shown.

The terminal device 30 includes at least one processor (illustrated in fig. 2 by including one processor 301) and at least one transceiver (illustrated in fig. 2 by including one transceiver 303). Optionally, the terminal device 30 may further include at least one memory (exemplarily illustrated in fig. 2 by including one memory 302), at least one output device (exemplarily illustrated in fig. 2 by including one output device 304), and at least one input device (exemplarily illustrated in fig. 2 by including one input device 305).

The processor 301, the memory 302 and the transceiver 303 are connected by a communication line. The communication link may include a path for transmitting information between the aforementioned components.

The processor 301 may be a general-purpose Central Processing Unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs in accordance with the present disclosure. In a specific implementation, the processor 301 may also include a plurality of CPUs, and the processor 301 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor, as an example. A processor herein may refer to one or more devices, circuits, or processing cores that process data (e.g., computer program instructions).

The memory 302 may be a device having a storage function. Such as, but not limited to, read-only memory (ROM) or other types of static memory devices that may store static information and instructions, Random Access Memory (RAM) or other types of dynamic memory devices that may store information and instructions, electrically erasable programmable read-only memory (EEPROM), compact disk read-only memory (CD-ROM) or other optical disk storage, optical disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory 302 may be separate and coupled to the processor 301 via a communication link. The memory 302 may also be integrated with the processor 301.

The memory 302 is used for storing computer-executable instructions for executing the scheme of the application, and is controlled by the processor 301 to execute. Specifically, the processor 301 is configured to execute computer-executable instructions stored in the memory 302, so as to implement the power value determination method described in the embodiment of the present application.

Alternatively, in this embodiment of the present application, the processor 301 may also perform functions related to processing in a power value determination method provided in the following embodiments of the present application, and the transceiver 303 is responsible for communicating with other devices or a communication network, which is not specifically limited in this embodiment of the present application.

Optionally, the computer execution instruction in the embodiment of the present application may also be referred to as an application program code or a computer program code, which is not specifically limited in the embodiment of the present application.

The transceiver 303 may use any transceiver or other device for communicating with other devices or communication networks, such as ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), or the like. The transceiver 303 includes a transmitter (Tx) and a receiver (Rx).

The output device 304 is in communication with the processor 301 and may display information in a variety of ways. For example, the output device 304 may be a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) display device, a Cathode Ray Tube (CRT) display device, a projector (projector), or the like.

The input device 305 is in communication with the processor 301 and may accept user input in a variety of ways. For example, the input device 305 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.

Network device 20 includes at least one processor (illustrated in fig. 2 as including a processor 201), at least one transceiver (illustrated in fig. 2 as including a transceiver 203), and at least one network interface (illustrated in fig. 2 as including a network interface 204). Optionally, the network device 20 may further include at least one memory (exemplarily illustrated in fig. 2 by including one memory 202). The processor 201, the memory 202, the transceiver 203, and the network interface 204 are connected via a communication line. The network interface 204 is configured to connect with a core network device through a link (e.g., an S1 interface), or connect with a network interface of another network device (not shown in fig. 2) through a wired or wireless link (e.g., an X2 interface), which is not specifically limited in this embodiment of the present application. In addition, the description of the processor 201, the memory 202 and the transceiver 203 may refer to the description of the processor 301, the memory 302 and the transceiver 303 in the terminal device 30, and will not be repeated herein.

In conjunction with the schematic structural diagram of the terminal device 30 shown in fig. 2, for example, fig. 3 is a specific structural form of the terminal device 30 provided in the embodiment of the present application.

Wherein, in some embodiments, the functions of the processor 301 in fig. 2 may be implemented by the processor 110 in fig. 3.

In some embodiments, the functions of the transceiver 303 in fig. 2 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, and the like in fig. 3.

Wherein the antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in terminal equipment 30 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution including 2G/3G/4G/5G wireless communication applied on the terminal device 30. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 150 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 150 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the same device as at least some of the modules of the processor 110.

The wireless communication module 160 may provide a solution for wireless communication applied to the terminal device 30, including Wireless Local Area Networks (WLANs), such as Wi-Fi networks, Bluetooth (BT), Global Navigation Satellite Systems (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), infrared technology (IR), and the like. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, perform frequency modulation and amplification on the signal, and convert the signal into electromagnetic waves through the antenna 2 to radiate the electromagnetic waves. When the terminal device 30 is a first device, the wireless communication module 160 may provide a solution for NFC wireless communication applied on the terminal device 30, that is, the first device includes an NFC chip. The NFC chip can improve the NFC wireless communication function. When the terminal device 30 is a second device, the wireless communication module 160 may provide a solution for NFC wireless communication applied on the terminal device 30, that is, the first device includes an electronic tag (e.g., a Radio Frequency Identification (RFID) tag). The NFC chip of the other device is close to the electronic tag to perform NFC wireless communication with the second device.

In some embodiments, antenna 1 of terminal device 30 is coupled to mobile communication module 150 and antenna 2 is coupled to wireless communication module 160 so that terminal device 30 can communicate with networks and other devices via wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, or IR technology, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), or a Satellite Based Augmentation System (SBAS).

In some embodiments, the functions of the memory 302 in fig. 2 may be implemented by the internal memory 121 in fig. 3 or an external memory (e.g., a Micro SD card) or the like connected to the external memory interface 120.

In some embodiments, the functionality of the output device 304 of FIG. 2 may be implemented by the display screen 194 of FIG. 3. The display screen 194 is used to display images, videos, and the like. The display screen 194 includes a display panel.

In some embodiments, the functionality of input device 305 in FIG. 2 may be implemented by a mouse, a keyboard, a touch screen device, or sensor module 180 in FIG. 3. Illustratively, as shown in fig. 3, the sensor module 180 may include, for example, one or more of a pressure sensor 180A, a gyroscope sensor 180B, a barometric pressure sensor 180C, a magnetic sensor 180D, an acceleration sensor 180E, a distance sensor 180F, a proximity light sensor 180G, a fingerprint sensor 180H, a temperature sensor 180J, a touch sensor 180K, an ambient light sensor 180L, and a bone conduction sensor 180M, which is not particularly limited in this embodiment of the present application.

In some embodiments, as shown in fig. 3, the terminal device 30 may further include one or more of an audio module 170, a camera 193, an indicator 192, a motor 191, a key 190, a SIM card interface 195, a USB interface 130, a charging management module 140, a power management module 141, and a battery 142, wherein the audio module 170 may be connected to a speaker 170A (also referred to as a "speaker"), a receiver 170B (also referred to as a "receiver"), a microphone 170C (also referred to as a "microphone", "microphone"), or an earphone interface 170D, which is not particularly limited in this embodiment of the present application.

It is to be understood that the structure shown in fig. 3 does not constitute a specific limitation to the terminal device 30. For example, in other embodiments of the present application, terminal device 30 may include more or fewer components than shown, or some components may be combined, some components may be split, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

In the prior art, as can be seen from the above-described manner for determining the maximum configuration transmission power of the terminal device, for the terminal device supporting the PC2, on the one hand, when the network device configures P_EMAX,cΔ P of 23dBm or less_{Power Class}Is 3dB, MPR is considered in combination_cOr A-MPR_cAnd Δ_IB,c、ΔT _C,cAnd Δ T_RxSRSThe minimum value of the maximum configured transmit power is less than 23 dBm. If the terminal device selects the minimum value as the maximum configured transmission power, the maximum configured transmission power will be lower than 23dBm, and actually, the maximum configured transmission power of the terminal device may be 23dBm, which is not necessarily lower than 23dBm, that is, excessive backoff of the transmission power may be caused.

On the other hand, when the actual uplink transmission duty ratio is larger than the maximum uplink transmission duty ratio energy value, Δ P is used to prevent SAR from exceeding the standard_PowerClassIs 3dB, but in some cases, Δ P_PowerClassIs gotThe value may not need to reach 3dB terminal device to be able to meet SAR specifications. For example, taking 256-order Quadrature Amplitude Modulation (QAM) as an example in an extreme scenario, the current MPR is_cIs defined as 4.5-6.5dB if MPR is taken_cIs 6.5dB, Δ P_PowerClassIf the value is 3dB, the minimum value of the maximum configured transmission power may be 16.5dBm, and when the terminal device selects the minimum value as the maximum configured transmission power, the transmission power of the terminal device may be only 16.5dBm, that is, excessive backoff of the transmission power may also be caused.

Based on this, the embodiments of the present application provide a power value determining method, which is a maximum transmission power P configured at a network device_EMAX,cThe method comprises the steps that the power level of the terminal equipment is less than or equal to 23dBm, or when the maximum uplink transmission duty ratio energy value of the terminal equipment is less than the actual uplink transmission duty ratio, the terminal equipment determines a backspacing value of the maximum transmitting power corresponding to a first power level, the backspacing value has at least two possible values, the maximum value of the at least two possible values is the difference value between the maximum transmitting power corresponding to the first power level and the maximum transmitting power corresponding to a second power level, the minimum value is 0, the first power level is the current power level of the terminal equipment, and the second power level is a preset power level lower than the first power level; and the terminal equipment determines the maximum configuration transmission power according to the back-off value and sends the back-off value to the network equipment.

In the power value determining method provided in the embodiment of the present application, the terminal device may also report the backoff value to the network device, so that the network device performs subsequent configuration. Optionally, the terminal device may directly report the backoff value to the network device, that is, after determining the backoff value, the terminal device directly sends the backoff value to the network device; or, the terminal device may also report the backoff value indirectly to the network device, that is, the terminal device does not send the backoff value to the network device, but sends the maximum uplink transmission duty ratio energy value to the network device, and the network device determines the backoff value according to the maximum uplink transmission duty ratio energy value.

The specific implementation of the above scheme will be described in detail in the following method embodiments, which are not described herein again.

Based on the above scheme, the terminal device determines a back-off value of the maximum transmission power corresponding to the first power class, and when the terminal device determines that the back-off value is smaller than a difference value between the maximum transmission power corresponding to the first power class and the maximum transmission power corresponding to the second power class, the maximum configuration power determined by the terminal device according to the back-off value is not too low, so that the probability of excessive back-off of the transmission power can be reduced, and the power gain is improved, thereby enhancing uplink coverage.

The above-mentioned summary of the invention is described in the present application, and the following will describe, with reference to fig. 1 to 3, a power value determination method provided by the embodiment of the present application by taking an example of interaction between the network device 20 shown in fig. 1 and any terminal device 30.

It should be noted that, in the following embodiments of the present application, names of messages between network elements or names of parameters in messages are only an example, and other names may also be used in a specific implementation, which is not specifically limited in this embodiment of the present application.

It can be understood that, in the following embodiments of the present application, on the premise that the terminal device satisfies the specific absorption rate index, the terminal device determines the back-off value of the maximum transmission power corresponding to the first power class, that is, after performing power back-off according to the determined back-off value of the maximum transmission power corresponding to the first power class, the terminal device may satisfy the specific absorption rate index.

In a possible implementation manner, as shown in fig. 4, a power value determining method provided in this embodiment of the present application is applicable to a maximum transmission power P configured by a network device_EMAX,cThe power value determination method comprises the following steps of:

s401, the terminal device determines a back-off value of the maximum transmitting power corresponding to the first power class.

And the first power level is the current power level of the terminal equipment. Alternatively, the first power class may be a higher class of PC2 in existing protocols, or a higher class than PC2, such as PC1, which may be defined in the future.

Optionally, when the terminal device determines the back-off value of the maximum transmission power corresponding to the first power class, it may select a value from the first value set as the back-off value according to its own performance (e.g., antenna parameters, etc.); or, when the terminal device determines the back-off value of the maximum transmission power corresponding to the first power class, if the maximum configured transmission power P configured by the network device is P_EMAX,cAnd if the back-off value is less than or equal to 23dBm, the terminal equipment determines that the back-off value is the minimum value in the first value set.

The first value set includes at least two values, a maximum value in the first value set is a difference between a maximum transmission power corresponding to the first power class and a maximum transmission power corresponding to the second power class, a minimum value in the first value set is 0, that is, a maximum value of the backoff value is a maximum value in the first value set, and a minimum value of the backoff value is a minimum value in the first value set.

The second power level is a preset power level lower than the first power level. Alternatively, the second power level may be a power level that is specified by the protocol to avoid exceeding the specific absorption rate, for example, the existing protocol considers that the specific absorption rate will exceed the specific absorption rate when the average transmitting power of the terminal device exceeds 23dBm in an evaluation period, so that the terminal device falls back to 23dBm to avoid the problem, and the second power level may be specified as PC 3. It is understood that, as the performance of the terminal device increases, the second power level may also be a higher power level than the PC3, which is not particularly limited in this embodiment of the present application.

Optionally, when the first value set includes more than two values, a difference between each value in the first value set and a previous value in the first value set may be equal to a same constant, for example, the first power level is PC2, the second power level is PC3, if the constant is 1, the first value set may be [0, 1, 2, 3], if the constant is 0.5, the first value set may be [0, 0.5, 1, 1.5, 2, 2.5, 3], and a value of the constant is not specifically limited in the embodiment of the present application. It is understood that when the first set of values includes two values, the first set of values is [0, 3 ].

Optionally, when the first power level is not the maximum power level specified in the protocol, the protocol may specify a second set of numerical values, where a maximum numerical value in the second set of numerical values is a difference between a maximum transmission power corresponding to a third power level and a maximum transmission power corresponding to a second power level, the second set of numerical values includes a difference between the maximum transmission power corresponding to the first power level and the maximum transmission power corresponding to the second power level, and the third power level is the maximum power level specified by the protocol (which may also be understood as a preset maximum power level). In this case, the terminal device may determine the first value set from the second set according to the first power level and the second power level, and then determine the backoff value of the maximum transmission power corresponding to the first power level from the first value set, that is, in this case, the first value set belongs to the second value set.

Illustratively, if the first power level is PC2, the second power level is PC3, the third power level is PC1, and the maximum transmit power corresponding to PC1 is 29dBm, the second set of numerical values specified by the protocol may be [0, 1, 2, 3, 4, 5, 6], and at this time, the difference between the maximum transmit power corresponding to the first power level and the maximum transmit power corresponding to the second power level is 3, so the first set of numerical values determined by the terminal device from the second set of numerical values may be [0, 1, 2, 3 ].

S402, the terminal device determines the maximum configuration transmitting power according to the back-off value of the maximum transmitting power corresponding to the first power.

The maximum configured transmission power is used for determining the transmission power of the terminal equipment during uplink transmission.

Optionally, the determining, by the terminal device, the maximum configured transmit power according to the backoff value includes:

the terminal device determines the minimum value of the maximum configuration power according to the back-off value, and the detailed description may refer to the related description in the brief introduction part of the related technology or name of the application, which is not described herein again;

and the terminal equipment configures the maximum transmitting power P according to the maximum transmitting power corresponding to the first power level and the maximum transmitting power P configured by the network equipment_EMAX,cDetermining a maximum value of the maximum configured transmission power, wherein optionally, the maximum transmission power corresponding to the first power class and the maximum transmission power configured by the network device satisfy the following formula: p_{CMAX_H,f,c}＝min{P _EMAX,c，P _PowerClassThat is, the terminal device may delete the backoff value when determining the maximum value of the maximum configured transmit power; or the terminal device transmits power according to the maximum transmitting power corresponding to the first power class and the maximum transmitting power P configured by the network device_EMAX,cAnd determining a maximum value of the maximum configuration transmitting power by the backoff value, wherein the detailed description refers to the related description in the brief introduction of related technologies or names in the present application and is not repeated herein;

after the minimum value of the maximum configuration power and the maximum value of the maximum configuration power are determined, the terminal device determines the maximum configuration power according to the maximum value and the minimum value, that is, the terminal device selects a value between the minimum value of the maximum configuration power and the maximum value of the maximum configuration power as the maximum configuration transmission power.

Optionally, after determining the maximum configured transmit power, the terminal device may determine the transmit power when performing uplink transmission according to the maximum transmit power, and for related implementation, reference may be made to the prior art, which is not described herein again.

And S403, the terminal equipment sends the rollback value to the network equipment.

Since the backoff behavior of the maximum transmit power corresponding to the power class of the terminal device may affect the configuration of the network device on some parameters of the terminal device, the terminal device may report the backoff value to the network device, so that the network device may perform subsequent configuration.

It should be noted that, the step S402 and the step S403 have no necessary sequence, and the step S402 may be executed first and then the step S403 is executed, or the step S403 may be executed first and then the step S402 is executed, which is not specifically limited in this embodiment of the application.

In another possible implementation manner, as shown in fig. 5, another power value determining method provided in this embodiment of the present application is applied to the maximum transmission power P configured by the network device_EMAX,cThe power value determination method comprises the following steps of:

s501, the terminal equipment obtains the uplink transmission duty ratio information.

Wherein, the uplink transmission duty ratio information may be a maximum uplink transmission duty ratio energy value of the terminal device; or, the ratio of the maximum uplink transmission duty ratio energy value of the terminal device to the actual uplink transmission duty ratio thereof may also be used.

S502, the terminal equipment determines a back-off value of the maximum transmitting power corresponding to the first power level according to the uplink transmission duty ratio information.

And the uplink transmission duty ratio information corresponds to a back-off value of the maximum transmission power corresponding to the first power level.

Possible implementation methodIn the formula, the uplink transmission duty ratio information is the maximum uplink transmission duty ratio energy value of the terminal device, and the corresponding relation between the maximum uplink transmission duty ratio energy value and the backoff value is Δ P_PowerClass＝P _HP- dBm(p _HPMaximum uplink transmission duty cycle energy value), wherein Δ P_PowerClassIs the backoff value, P_HPIs the maximum transmission power, p, corresponding to the first power level_HPIs a linear value of the maximum transmitting power corresponding to the first power level, and the unit thereof is mW, dBm (X) represents that the unit of X is converted into dBm, and the specific conversion process is that the dBm (X) is 10log₁₀(X)。

Optionally, in this embodiment of the present application, the minimum value of the maximum uplink transmission duty ratio energy value of the terminal device is 50%, and the maximum uplink transmission duty ratio energy value may be up to 100% with 10% as the granularity, that is, the maximum uplink transmission duty ratio energy value may be 50%, 60%, 70%, 80%, 90%, 100%. According to the corresponding relationship between the maximum uplink transmission duty ratio energy value and the backoff value, when the maximum uplink transmission duty ratio energy value is different, the backoff value is also different.

Illustratively, taking the first power level as PC2 and the second power level as PC3 as an example, the linearity value of the maximum transmit power of 26dBm corresponding to PC2 is 398mW, when the maximum uplink transmission duty ratio power value is 50%, the backoff value is 26dBm-dBm (398 x 50%) -3 dB, when the maximum uplink transmission duty ratio power value is 60%, the backoff value is 2.2dB, and so on, when the maximum uplink transmission duty ratio power value is 100%, the backoff value is 0. Therefore, it can be understood that the maximum value of the backoff value determined according to the corresponding relationship between the maximum uplink transmission duty ratio energy value and the backoff value is the difference between the maximum transmission power corresponding to the first power and the maximum transmission power corresponding to the second power level, and the minimum value is 0.

In another possible implementation manner, the uplink transmission duty ratio information is a ratio of a maximum uplink transmission duty ratio energy value of the terminal device to an actual uplink transmission duty ratio, and if the ratio is less than 1, the ratio isThe corresponding relation between the value and the backspacing value is as follows: delta P_PowerClass＝10*ABS(log ₁₀(maximum uplink transmission duty ratio energy value/actual uplink transmission duty ratio)) dB, where Δ P_PowerClassFor the backoff value, abs (X) indicates taking the absolute value of X.

According to the above correspondence, when the ratio of the maximum uplink transmission duty ratio energy value to the actual uplink transmission duty ratio is different, the back-off value of the maximum transmission power corresponding to the first power class is also different. The maximum uplink transmission duty ratio capacity value is the same as the actual uplink transmission duty ratio capacity value, the ratio of the maximum uplink transmission duty ratio capacity value to the actual uplink transmission duty ratio is the maximum value 1, and the backspacing value is the minimum value 0; when the maximum uplink transmission duty ratio energy value is 50% of the minimum value and the actual uplink transmission duty ratio is 100% of the maximum value, the ratio of the maximum uplink transmission duty ratio energy value to the actual uplink transmission duty ratio is 0.5 of the minimum value, and the backoff value is 3 of the maximum value, therefore, when the first power level is PC2 and the second power level is PC3, the maximum value of the backoff value determined according to the correspondence relationship with the backoff value is the difference between the maximum transmission power corresponding to the first power and the maximum transmission power corresponding to the second power level, and the minimum value is 0.

S503, the terminal equipment determines the maximum configuration transmitting power according to the back-off value of the maximum transmitting power corresponding to the first power.

The maximum configured transmit power is used to determine the transmit power when the terminal device performs uplink transmission, and the related description may refer to step S402, which is not described herein again.

And S504, the terminal equipment sends the maximum uplink transmission duty ratio energy value to the network equipment.

The terminal device sends the maximum uplink transmission duty ratio energy value to the network device, which can also be understood as that the terminal device indirectly reports the back-off value of the maximum transmission power corresponding to the first power level to the network device.

And S505, the network equipment determines a back-off value of the maximum transmitting power corresponding to the first power level according to the uplink transmission duty ratio information.

In a possible implementation manner, when the uplink transmission duty ratio information is the maximum uplink transmission duty ratio energy value, the network device directly determines the backoff value according to the maximum uplink transmission duty ratio energy value reported by the terminal device in step S504 and the corresponding relationship between the maximum uplink transmission duty ratio energy value and the backoff value, which may refer to the related description in step S502 and is not described herein again.

In another possible implementation manner, when the uplink transmission duty ratio information is a ratio of the maximum uplink transmission duty ratio energy value and the actual uplink transmission duty ratio, since the uplink transmission of the terminal device is scheduled by the network device, the network device may determine the actual uplink transmission duty ratio of the terminal device, determine the uplink transmission duty ratio information in combination with the maximum uplink transmission duty ratio energy value reported by the terminal device in step S504, and determine the backoff value according to the corresponding relationship between the uplink transmission duty ratio information and the backoff value, for which specific description may refer to the related description in step S502, which is not repeated herein.

It should be noted that, the step S502 and the step S504 have no necessary sequence, the step S502 may be executed first and then the step S504 is executed, or the step S504 may be executed first and then the step S502 is executed, which is not specifically limited in this embodiment.

In another possible implementation, when the maximum transmission power P configured by the network device_EMAX,cWhen the value is less than or equal to 23dBm, the terminal device may determine a backoff value of the maximum transmit power corresponding to the first power class as 0, and at this time, the terminal device does not need to determine the backoff valueAnd the network equipment can also determine that the back-off value of the maximum transmitting power corresponding to the first power level is 0 according to the configured maximum transmitting power, and then performs subsequent configuration according to the back-off value 0. Based on the scheme, the terminal device determines the back-off value of the maximum transmission power corresponding to the first power class as 0, that is, the back-off value is determined to be lower than the difference value between the maximum transmission power corresponding to the first power class and the maximum transmission power corresponding to the second power class, so that the maximum configuration power determined by the terminal device according to the back-off value is not too low, the probability of excessive back-off of the transmission power can be reduced, and the power gain is improved, thereby enhancing the uplink coverage.

In another possible implementation manner, the terminal device may notify the network device whether it needs to perform power backoff based on the first power level through the indication information. When the indication information indicates that the terminal equipment needs to perform power backoff based on the first power class, the terminal equipment and the network equipment both determine a backoff value of maximum transmission power corresponding to the first power class as a difference value between the maximum transmission power corresponding to the first power class and the maximum transmission power corresponding to the second power class, and when the indication information indicates that the terminal equipment does not need to perform power backoff based on the first power class, the terminal equipment and the network equipment determine the backoff value of the maximum transmission power corresponding to the first power class as 0.

Optionally, the indication information may be represented by a flag bit, and when the flag bit is "supported", it indicates that the terminal device needs to perform power backoff based on the first power level, and otherwise, when the flag bit is a default value, it indicates that the terminal device does not need to perform power backoff based on the first power level; or, when the flag bit is "supported", it indicates that the terminal device does not need to perform power backoff based on the first power level, and conversely, when the flag bit is a default value, it indicates that the terminal device needs to perform power backoff based on the first power level.

Based on the scheme, when the terminal device determines that the power back-off value does not need to be performed based on the first power level, the back-off value of the maximum transmission power corresponding to the first power level is determined to be 0, so that the maximum configuration power determined by the terminal device according to the back-off value is not too low, the probability of excessive back-off of the transmission power can be reduced, and the power gain is improved, so that the uplink coverage is enhanced.

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 component that can be used for 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 component that can be used for 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 would 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 corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

For example, the communication device is taken as the terminal device in the above method embodiment. Fig. 6 shows a schematic structural diagram of a terminal device 60. The terminal device 60 comprises a processing module 601. Optionally, the terminal device 60 may further include a transceiver module 602. The transceiver module 602, which may also be referred to as a transceiver unit, is used to implement a transmitting and/or receiving function, and may be, for example, a transceiver circuit, a transceiver, or a communication interface.

The transceiver module 602 may include a receiving module and a sending module, which are respectively configured to execute the steps of receiving and sending classes executed by the terminal device in the foregoing method embodiment, and the processing module 601 may be configured to execute other steps except the steps of receiving and sending classes executed by the terminal device in the foregoing method embodiment.

For example, in a possible implementation manner, the processing module 601 is configured to determine a backoff value of a maximum transmission power corresponding to a first power class, where the backoff value belongs to a first set of values, where the first set of values includes at least two values, a maximum value in the first set of values is a difference between the maximum transmission power corresponding to the first power class and a maximum transmission power corresponding to a second power class, a minimum value in the first set of values is 0, the first power class is a current power class of the terminal device, and the second power class is a preset power class lower than the first power class; the processing module 601 is further configured to determine a maximum configured transmission power according to the backoff value, where the maximum configured transmission power is used to determine the transmission power when the terminal device performs uplink transmission.

Optionally, the transceiver module 602 is configured to send a backoff value of the maximum transmit power corresponding to the first power class to the network device.

Optionally, the processing module 601 is configured to determine a backoff value of a maximum transmit power corresponding to the first power class, and includes: if the maximum transmission power configured by the network device is less than or equal to 23dBm, the processing module 601 is configured to determine that the backoff value is the minimum value in the first set of values.

Optionally, the processing module 601 is further configured to determine a maximum configured transmission power according to the backoff value, and includes: the processing module 601 is further configured to determine a minimum value of the maximum configured transmit power according to the backoff value; the processing module 601 is further configured to determine a maximum value of the maximum configured transmit power according to the maximum transmit power corresponding to the first power class and the maximum transmit power configured by the network device, or the processing module 601 is further configured to determine a maximum value of the maximum configured transmit power according to the maximum transmit power corresponding to the first power class, the maximum transmit power configured by the network device, and the backoff value; the processing module 601 is further configured to determine the maximum configured transmit power according to the minimum value and the maximum value.

In another possible implementation manner, the processing module 601 is configured to determine a backoff value of the maximum transmission power corresponding to the first power level according to uplink transmission duty cycle information, where the uplink transmission duty cycle information has a corresponding relationship with the backoff value, and the uplink transmission duty cycle information is a maximum uplink transmission duty cycle energy value or a ratio of the maximum uplink transmission duty cycle energy value to an actual uplink transmission duty cycle.

Optionally, the processing module 601 is further configured to determine a maximum configured transmission power according to the backoff value, where the maximum configured transmission power is used to determine the transmission power when the terminal device performs uplink transmission.

Optionally, the processing module 601 is further configured to determine a maximum configured transmit power according to the backoff value, and includes: the processing module 601 is further configured to determine a minimum value of the maximum configured transmit power according to the backoff value; the processing module 601 is further configured to determine a maximum value of the maximum configured transmit power according to the maximum transmit power corresponding to the first power class and the maximum transmit power configured by the network device, or the processing module 601 is further configured to determine a maximum value of the maximum configured transmit power according to the maximum transmit power corresponding to the first power class, the maximum transmit power configured by the network device, and the backoff value; the processing module 601 is further configured to determine the maximum configured transmit power according to the minimum value and the maximum value.

Optionally, the transceiver module 602 is configured to send the maximum uplink transmission duty ratio energy value to the network device.

All relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

In the present embodiment, the terminal device 60 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, a circuit, a processor and memory that execute one or more software or firmware programs, an integrated logic circuit, and/or other device that provides the described functionality. In a simple embodiment, the terminal device 60 may take the form of the terminal device 30 shown in fig. 2, as will be appreciated by those skilled in the art.

For example, the processor 301 in the terminal device 30 shown in fig. 2 may execute the instructions by calling a computer stored in the memory 302, so that the terminal device 30 executes the power value determination method in the above-described method embodiment.

Specifically, the functions/implementation procedures of the processing module 601 and the transceiver module 602 in fig. 6 can be implemented by the processor 301 in the terminal device 30 shown in fig. 2 calling the computer execution instructions stored in the memory 302. Alternatively, the function/implementation procedure of the processing module 601 in fig. 6 may be implemented by the processor 301 in the terminal device 30 shown in fig. 2 calling a computer executing instruction stored in the memory 302, and the function/implementation procedure of the transceiver module 602 in fig. 6 may be implemented by the transceiver 303 in the terminal device 30 shown in fig. 2.

Since the terminal device 60 provided in this embodiment can execute the power value determining method, the technical effect obtained by the terminal device can refer to the method embodiment, and is not described herein again.

Or, for example, the communication device is taken as the network device in the above method embodiment. Fig. 7 shows a schematic structural diagram of a network device 70. The network device 70 includes a processing module 701. Optionally, the network device 70 may further include a transceiver module 702. The transceiver module 702, which may also be referred to as a transceiver unit, is used to implement a transmitting and/or receiving function, and may be, for example, a transceiver circuit, a transceiver, or a communication interface.

The transceiver module 702 may include a receiving module and a sending module, which are respectively configured to execute the steps of receiving and sending performed by the network device in the foregoing method embodiment, and the processing module 701 may be configured to execute other steps, except the steps of receiving and sending, performed by the network device in the foregoing method embodiment.

For example, the processing module 701 is configured to determine a backoff value of the maximum transmission power corresponding to the first power level according to uplink transmission duty cycle information, where the uplink transmission duty cycle information has a corresponding relationship with the backoff value, and the uplink transmission duty cycle information is a maximum uplink transmission duty cycle energy value or a ratio of the maximum uplink transmission duty cycle energy value to an actual uplink transmission duty cycle.

Optionally, the transceiver module 702 is configured to receive the maximum uplink transmission duty ratio energy value from the terminal device.

In the present embodiment, the network device 70 is presented in the 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 device that provides the described functionality. In a simple embodiment, those skilled in the art will appreciate that the network device 70 may take the form of the network device 20 shown in FIG. 2.

For example, processor 201 in network device 20 shown in fig. 2 may execute the instructions by calling a computer stored in memory 202, so that network device 20 executes the power value determination method in the above-described method embodiment.

Specifically, the functions/implementation procedures of the processing module 701 and the transceiver module 702 in fig. 7 can be implemented by the processor 201 in the network device 20 shown in fig. 2 calling the computer execution instructions stored in the memory 202. Alternatively, the function/implementation procedure of the processing module 701 in fig. 7 may be implemented by the processor 201 in the network device 20 shown in fig. 2 calling a computer executing instruction stored in the memory 202, and the function/implementation procedure of the transceiver module 702 in fig. 7 may be implemented by the transceiver 203 in the network device 20 shown in fig. 2.

Since the network device 70 provided in this embodiment can execute the power value determining method, the technical effect obtained by the method can refer to the method embodiment, and is not described herein again.

Optionally, an embodiment of the present application further provides a communication device (for example, the communication device may be a chip or a system-on-chip), where the communication device includes a processor, and is configured to implement the method in any of the above method embodiments. In one possible design, the communication device further includes a memory. The memory for storing the necessary program instructions and data, the processor may call the program code stored in the memory to instruct the communication device to perform the method of any of the above-described method embodiments. Of course, the memory may not be in the communication device. In another possible design, the communication device further includes an interface circuit that is a code/data read/write interface circuit for receiving computer-executable instructions (which are stored in the memory, may be read directly from the memory, or may pass through other devices) and transmitting to the processor. When the communication device is a chip system, the communication device may be composed of a chip, or may include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.

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 device. 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 a server, a data center, 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. In the embodiment of the present application, the computer may include the aforementioned apparatus.

While the present application has been described in connection with various embodiments, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed application, from a review of the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

Although the present application has been described in conjunction with specific features and embodiments thereof, it will be evident that various modifications and combinations can be made thereto without departing from the spirit and scope of the application. Accordingly, the specification and figures are merely exemplary of the present application as defined in the appended claims and are intended to cover any and all modifications, variations, combinations, or equivalents within the scope of the present application. It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

A method for power value determination, the method comprising:

the method comprises the steps that terminal equipment determines a backspacing value of maximum transmitting power corresponding to a first power level, wherein the backspacing value belongs to a first numerical value set, the first numerical value set comprises at least two numerical values, the maximum numerical value in the first numerical value set is the difference value of the maximum transmitting power corresponding to the first power level and the maximum transmitting power corresponding to a second power level, the minimum numerical value in the first numerical value set is 0, the first power level is the current power level of the terminal equipment, and the second power level is a preset power level lower than the first power level;

and the terminal equipment determines the maximum configuration transmitting power according to the back-off value, wherein the maximum configuration transmitting power is used for determining the transmitting power when the terminal equipment carries out uplink transmission.
The method of claim 1, further comprising:

and the terminal equipment sends the back-off value to network equipment.
The method of claim 1 or 2, wherein the determining, by the terminal device, the backoff value of the maximum transmission power corresponding to the first power class comprises:

and if the maximum transmitting power configured by the network equipment is less than or equal to 23dBm, the terminal equipment determines the back-off value as the minimum value in the first value set.
The method according to any of claims 1-3, wherein the terminal device determines a maximum configured transmit power according to the back-off value, comprising:

the terminal equipment determines the minimum value of the maximum configuration transmitting power according to the back-off value;

the terminal device determines a maximum value of the maximum configuration transmitting power according to the maximum transmitting power corresponding to the first power class and the maximum transmitting power configured by the network device, or the terminal device determines the maximum value of the maximum configuration transmitting power according to the maximum transmitting power corresponding to the first power class, the maximum transmitting power configured by the network device and the back-off value;

and the terminal equipment determines the maximum configuration transmitting power according to the minimum value and the maximum value.
The method according to any of claims 1-4, wherein the first set of values belongs to a second set of values, and wherein a maximum value in the second set of values is a difference between a maximum transmission power corresponding to a third power level and a maximum transmission power corresponding to the second power level, the third power level being a preset maximum power level, the third power level being greater than the first power level, and a minimum value in the second set of values being 0.
A method for power value determination, the method comprising:

the communication device determines a back-off value of maximum transmitting power corresponding to a first power level according to uplink transmission duty ratio information, wherein the uplink transmission duty ratio information has a corresponding relation with the back-off value, the uplink transmission duty ratio information is a maximum uplink transmission duty ratio energy value or a ratio of the maximum uplink transmission duty ratio energy value to an actual uplink transmission duty ratio, and the first power level is a current power level of the terminal device.
The method of claim 6, wherein the uplink transmission duty cycle information is the maximum uplink transmission duty cycle energy value; the corresponding relation between the maximum uplink transmission duty ratio energy value and the backoff value is as follows:

ΔP _PowerClass＝P _HP-dBm(p _HPmaximum uplink transmission duty cycle energy value);

wherein, Δ P_PowerClassIs the backoff value, P_HPIs the maximum transmission power, p, corresponding to the first power level_HPdBm (X) represents converting X in units of milliwatts to decibels dBm for a linear value of maximum transmit power for the first power level.
The method of claim 6, wherein the uplink transmission duty cycle information is a ratio of the maximum uplink transmission duty cycle energy value to an actual uplink transmission duty cycle;

if the ratio is smaller than 1, the corresponding relation between the ratio and the backspacing value is as follows: delta P_PowerClass＝10*ABS(log ₁₀(maximum uplink transmission duty ratio energy value/actual uplink transmission duty ratio));

wherein, Δ P_PowerClassFor the backoff value, abs (X) represents the absolute value of X.
The method according to any of claims 6-8, wherein if the communication device is the terminal equipment, the method further comprises:

and the terminal equipment determines the maximum configuration transmitting power according to the back-off value, wherein the maximum configuration transmitting power is used for determining the transmitting power when the terminal equipment carries out uplink transmission.
The method of claim 9, wherein the terminal device determines a maximum configured transmit power according to the backoff value, comprising:

the terminal equipment determines the minimum value of the maximum configuration transmitting power according to the back-off value;

the terminal device determines a maximum value of the maximum configuration transmitting power according to the maximum transmitting power corresponding to the first power class and the maximum transmitting power configured by the network device, or the terminal device determines the maximum value of the maximum configuration transmitting power according to the maximum transmitting power corresponding to the first power class, the maximum transmitting power configured by the network device and the back-off value;

and the terminal equipment determines the maximum configuration transmitting power according to the minimum value and the maximum value.
A communication apparatus, characterized in that the communication apparatus comprises: a processing module;

the processing module is configured to determine a backoff value of a maximum transmit power corresponding to a first power class, where the backoff value belongs to a first value set, the first value set includes at least two values, a maximum value in the first value set is a difference between the maximum transmit power corresponding to the first power class and a maximum transmit power corresponding to a second power class, a minimum value in the first value set is 0, the first power class is a current power class of the communication apparatus, and the second power class is a preset power class lower than the first power class;

the processing module is further configured to determine a maximum configured transmit power according to the backoff value, where the maximum configured transmit power is used to determine a transmit power of the communication apparatus during uplink transmission.
The communications device of claim 11, further comprising: a transceiver module;

the transceiver module is configured to send the backoff value to a network device.
The communications apparatus as claimed in claim 11 or 12, wherein the processing module, configured to determine a backoff value of a maximum transmit power corresponding to a first power class, comprises:

if the maximum transmission power configured by the network device is less than or equal to 23dBm, the processing module is configured to determine that the backoff value is the minimum value in the first value set.
The communications apparatus as claimed in any of claims 11-13, wherein the processing module is further configured to determine a maximum configured transmit power according to the backoff value, and comprises:

the processing module is further configured to determine a minimum value of the maximum configured transmit power according to the backoff value;

the processing module is further configured to determine a maximum value of the maximum configured transmit power according to the maximum transmit power corresponding to the first power class and the maximum transmit power configured by the network device, or the processing module is further configured to determine a maximum value of the maximum configured transmit power according to the maximum transmit power corresponding to the first power class, the maximum transmit power configured by the network device, and the backoff value;

the processing module is further configured to determine the maximum configured transmit power according to the minimum value and the maximum value.
The communication device according to any of claims 11-14, wherein the first set of values belongs to a second set of values, and wherein a maximum value of the second set of values is a difference between a maximum transmission power corresponding to a third power level and a maximum transmission power corresponding to the second power level, the third power level being a preset maximum power level, the third power level being greater than the first power level, and a minimum value of the second set of values being 0.
A communication apparatus, characterized in that the communication apparatus comprises: a processing module;

the processing module is configured to determine a backoff value of maximum transmit power corresponding to a first power class according to uplink transmission duty cycle information, where the uplink transmission duty cycle information has a corresponding relationship with the backoff value, the uplink transmission duty cycle information is a maximum uplink transmission duty cycle energy value or a ratio of the maximum uplink transmission duty cycle energy value to an actual uplink transmission duty cycle, and the first power class is a current power class of a terminal device.
The communications device of claim 16, wherein the uplink transmission duty cycle information is the maximum uplink transmission duty cycle energy value; the corresponding relation between the maximum uplink transmission duty ratio energy value and the backoff value is as follows:

ΔP _PowerClass＝P _HP-dBm(p _HPmaximum uplink transmission duty cycle energy value);

wherein, Δ P_PowerClassIs the backoff value, P_HPIs the maximum transmission power, p, corresponding to the first power level_HPdBm (X) represents converting X in units of milliwatts to decibels dBm for a linear value of maximum transmit power for the first power level.
The communications device of claim 16, wherein the uplink transmission duty cycle information is a ratio of the maximum uplink transmission duty cycle energy value to an actual uplink transmission duty cycle;

if the ratio is smaller than 1, the corresponding relation between the ratio and the backspacing value is as follows: delta P_PowerClass＝10*ABS(log ₁₀(maximum uplink transmission duty ratio energy value/actual uplink transmission duty ratio));

wherein, Δ P_PowerClassFor the backoff value, abs (X) represents the absolute value of X.
The communications apparatus as claimed in any one of claims 16 to 18, wherein if the communications apparatus is the terminal device, the processing module is further configured to determine a maximum configured transmit power according to the backoff value, where the maximum configured transmit power is used to determine a transmit power when the terminal device performs uplink transmission.
The communications apparatus of claim 19, wherein the processing module is further configured to determine a maximum configured transmit power according to the backoff value, comprising:

the processing module is further configured to determine a minimum value of the maximum configured transmit power according to the backoff value;

the processing module is further configured to determine a maximum value of the maximum configured transmit power according to the maximum transmit power corresponding to the first power class and the maximum transmit power configured by the network device, or the processing module is further configured to determine a maximum value of the maximum configured transmit power according to the maximum transmit power corresponding to the first power class, the maximum transmit power configured by the network device, and the backoff value;

the processing module is further configured to determine the maximum configured transmit power according to the minimum value and the maximum value.
A communication apparatus, characterized in that the communication apparatus comprises: a processor and a memory;

the memory is for storing computer executable instructions which, when executed by the processor, cause the communication device to perform the method of any of claims 1-5 or cause the communication device to perform the method of any of claims 6-10.
A communication apparatus, characterized in that the communication apparatus comprises: a processor and an interface circuit;

the interface circuit is used for receiving computer execution instructions and transmitting the computer execution instructions to the processor;

the processor is configured to execute the computer-executable instructions to cause the communication device to perform the method of any one of claims 1-5 or to cause the communication device to perform the method of any one of claims 6-10.
A computer-readable storage medium comprising instructions that, when executed on a communication apparatus, cause the communication apparatus to perform the method of any of claims 1-5 or cause the communication apparatus to perform the method of any of claims 6-10.