WO2020224451A1 - 传输功率控制方法、相关设备及系统 - Google Patents

传输功率控制方法、相关设备及系统 Download PDF

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Publication number
WO2020224451A1
WO2020224451A1 PCT/CN2020/086672 CN2020086672W WO2020224451A1 WO 2020224451 A1 WO2020224451 A1 WO 2020224451A1 CN 2020086672 W CN2020086672 W CN 2020086672W WO 2020224451 A1 WO2020224451 A1 WO 2020224451A1
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WO
WIPO (PCT)
Prior art keywords
uplink
terminal
power
configuration
downlink configuration
Prior art date
Application number
PCT/CN2020/086672
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English (en)
French (fr)
Inventor
丁仁天
钱锋
隋艺
周宜盼
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20802588.2A priority Critical patent/EP3955653A4/en
Priority to US17/608,341 priority patent/US12089164B2/en
Publication of WO2020224451A1 publication Critical patent/WO2020224451A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
    • H04W52/283—Power depending on the position of the mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties

Definitions

  • This application relates to the field of wireless communication technology, and in particular to a transmission power control method, related equipment and system.
  • the specific absorption rate is a standard quantity used to measure the absorption of electromagnetic energy generated by terminal products such as mobile phones by human tissues.
  • the unit of SAR is W/Kg (watts per kilogram).
  • some regulatory agencies have established electromagnetic energy absorption specifications and set SAR limit values.
  • the SAR limit value refers to the maximum amount of electromagnetic energy that can be absorbed per kilogram of human tissue within 6 minutes.
  • FCC Federal Communications Commission
  • ESTI European Telecommunications Standards Institute
  • the method of reducing the transmission power of the terminal is adopted to comply with the SAR limit value.
  • the transmission power that needs to be reduced is determined in the strict scenario of continuous uplink transmission, and there is no distinction between different business scenarios. Transmission characteristics.
  • This application provides a transmission power control method, related equipment and system.
  • the terminal can determine the actual power reduction according to the uplink and downlink configuration issued by the network side, which can achieve more power headroom during uplink transmission and improve transmission performance. At the same time, it can meet the electromagnetic energy absorption specification.
  • this application provides a transmission power control method applied to a terminal (such as a mobile phone).
  • the method may include: the terminal receives first information sent by a network device, the first information indicating a first uplink and downlink configuration. Then, the terminal performs uplink transmission on part or all of the uplink time resources indicated by the first uplink and downlink configuration.
  • the actual transmission power of the uplink transmission is equal to the maximum transmission power of the terminal minus the actual power drop, which complies with electromagnetic energy absorption specifications.
  • the actual power decrease is calculated from the first power decrease and the first power increase, and the actual power decrease is smaller than the first power decrease.
  • the first power increase is equal to the difference between the maximum transmission power that meets the electromagnetic energy absorption specification under the first uplink and downlink configuration and the maximum transmission power that meets the electromagnetic energy absorption specification under the second uplink and downlink configuration.
  • the proportion of the first uplink time determined by the first uplink and downlink configuration is smaller than the proportion of the second uplink time determined by the second uplink and downlink configuration.
  • the first power reduction is used to reduce the transmission power from the maximum transmission power of the terminal to the maximum transmission power that meets the electromagnetic energy absorption specification in the second uplink and downlink configuration, and the terminal is at a first distance from the human body.
  • this application provides a transmission power control method applied to a network device (such as a gNB) side.
  • the method may include: the network device sends first information to the terminal, the first information indicating a first uplink and downlink configuration. Then, the network equipment can receive the uplink signal transmitted by the terminal.
  • the actual transmission power of the uplink signal transmitted by the terminal is equal to the maximum transmission power of the terminal minus the actual power drop, which complies with electromagnetic energy absorption specifications.
  • the actual power decrease is calculated from the first power decrease and the first power increase, and the actual power decrease is smaller than the first power decrease.
  • the description of the first power decrease and the first power increase please refer to the first aspect, which is not repeated here.
  • the first uplink and downlink configuration may indicate the allocation of uplink time resources and downlink time resources within a period of time. For example, which subframes in the configuration period are UL subframes and which subframes are DL subframes.
  • which subframes in the configuration period are UL subframes and which subframes are DL subframes.
  • the uplink and downlink configuration please refer to the foregoing content, which is not repeated here.
  • the first mapping table may include a plurality of candidate distances and power drops corresponding to the plurality of candidate distances (referred to as delta 1).
  • the first mapping table can be obtained according to step 1 in the prior art shown in FIG. 2.
  • the second mapping table may include multiple candidate uplink time proportions and power increase (delta 2 for short) corresponding to the multiple candidate uplink time proportions.
  • the power increase corresponding to an uplink time ratio indicates that the power of the uplink time ratio is less reduced compared to the full uplink configuration.
  • the delta 2 in the second mapping table can be an empirical value.
  • the transmission power can be reduced by 3dB compared with the 50% uplink proportion compared with the 100% uplink proportion; delta 2 can also be obtained through actual tests.
  • the second uplink and downlink configuration may be a full uplink configuration, in which case the second uplink time accounts for 100%. It is not limited to the extreme uplink configuration such as the full uplink configuration, and the second uplink configuration may also be other uplink and downlink configurations with a high proportion of uplink time, for example, the proportion of uplink time is 95%.
  • the terminal can obtain the uplink and downlink configuration (UL/DL assignment) from the network side. If the proportion of the uplink time configured in the uplink and downlink configuration is not 100%, that is, it is not an AllUplink configuration, the terminal can determine the power reduction that the uplink and downlink configuration can reduce compared to the full uplink configuration. The power reduction in the full uplink configuration can be determined with reference to the existing method shown in FIG. 2. Finally, the terminal can use the reduced power drop to reduce the uplink transmission power.
  • the transmission power control method provided by the present application can increase the transmission power, can realize that the terminal obtains more power headroom during uplink transmission, improve the transmission performance, and at the same time comply with the SAR specification.
  • the terminal can detect the distance between the terminal and the human body through a distance sensor, or the distance between the terminal and the human body through a radar ranging sensor or an infrared ranging sensor. .
  • the terminal may also determine the distance between the terminal and the human body according to a use case.
  • the terminal can determine that the distance between the user and the terminal is within a certain distance range, such as 0.1 mm to 1.0 mm. Not limited to this example, the terminal may also determine the distance between the user and the terminal according to other usage scenarios, which is not limited in this application.
  • the terminal may find the power drop corresponding to the distance from the first mapping table according to the first distance. In this way, compliance with electromagnetic energy absorption specifications can be ensured, even in extreme scenarios where the terminal performs continuous uplink transmission. That is to say, the power drop determined by the test in this extreme scenario is the maximum power drop, because it can ensure that electromagnetic energy absorption specifications can also be complied with in other scenarios.
  • the terminal can look up the power increase corresponding to the first uplink time ratio (that is, the less reduced power, from the second mapping table) according to the first uplink time ratio. delta 2).
  • the first information can be carried in system messages (such as SIB 1), can also be carried in high-level messages (such as RRC messages), and can also be carried in PDCCH (such as DCI message).
  • SIB 1 system messages
  • RRC messages high-level messages
  • PDCCH PDCCH
  • the first information when the first uplink and downlink configuration adopts a cell-level semi-static UL/DL configuration, the first information may be carried in a system message.
  • the first information may be TDD-Config IE in SIB1.
  • the first information may be UL-DL-configuration-common IE in SIB 1 and/or UL-DL-configuration-common-Set2IE.
  • the first information when the first uplink and downlink configuration adopts a user-level semi-static UL/DL configuration, the first information may be carried in a high-level message.
  • the first information may be the ServingCellConfig IE in the RRC message.
  • the first information when the first uplink and downlink configuration adopts a dynamic UL/DL configuration, the first information may be carried in the DCI message.
  • the first information may be the ServingCellConfig IE in the RRC message.
  • the uplink time resources specifically occupied by the uplink transmission require the network device to issue an uplink grant (UL grant) for further instructions.
  • the terminal Before receiving the first information, the terminal may also receive the UL grant sent by the network device.
  • the UL grant may be carried in the DCI message, and may further determine whether the uplink data is carried in the uplink time resource indicated by the first uplink and downlink configuration according to the UL grant. Which part of the uplink time resource.
  • the terminal may also send a capability report message to the network device, such as user equipment capability (UE capability), and the capability report message may carry second information (such as maxUplinkDutyCycle-PC2-FR1IE).
  • the second information may indicate the maximum proportion of the uplink time that the terminal can be scheduled within the SAR evaluation period (for example, 6 minutes).
  • the network device schedules uplink time resources for the terminal, it needs to consider the maximum proportion reported by the terminal.
  • the larger the maximum ratio the larger the uplink time resource scheduled by the network device for the terminal, that is, the uplink time resource configured by the UL grant, the larger the proportion of the uplink time resource indicated by the first uplink and downlink configuration.
  • the maximum ratio reported by the terminal may be greater than the first value (such as 90%), for example, the maximum ratio may be set to 100%.
  • the uplink time resource configured by the network device to the terminal through the UL grant can exceed the second value (for example, 100%) in the uplink time resource indicated by the first uplink and downlink configuration.
  • the maximum proportion in the terminal capability report is large, such as 100%, then the uplink time resources configured by the UL grant issued by the network equipment occupy the uplink time resources indicated by the first uplink-downlink ratio.
  • the ratio can be very high, such as 100%, which helps the terminal to be configured with more uplink time resources and facilitates the terminal to transmit more data in the uplink.
  • the terminal in the RRC idle state does not receive the first information from the network device, it can determine the actual power drop based on the limit uplink time ratio, such as 20%, to determine the uplink transmission Actual transmission power.
  • the limit uplink time ratio such as 20%
  • the present application provides a terminal including multiple functional units for correspondingly executing the method provided in any one of the possible implementation manners of the first aspect.
  • the present application provides a network device including multiple functional units for correspondingly executing the method provided in any one of the possible implementation manners of the second aspect.
  • this application provides a terminal for executing the transmission power control method described in any one of the possible implementation manners of the first aspect.
  • the terminal may include a memory, a processor coupled with the memory, and a transceiver, where the transceiver is used to communicate with other communication devices (such as network devices).
  • the memory is used to store the implementation code of the transmission power control method described in any one of the possible implementations of the first aspect
  • the processor is used to execute the program code stored in the memory, that is, execute any of the possible implementations of the first aspect.
  • this application provides an access network device for executing the transmission power control method described in any one of the possible implementation manners of the second aspect or the fourth aspect.
  • the network device may include: a memory, a processor coupled with the memory, and a transceiver, where the transceiver is used to communicate with other communication devices (such as a terminal).
  • the memory is used to store the implementation code of the transmission power control method described in any one of the possible implementations of the second aspect
  • the processor is used to execute the program code stored in the memory, that is, execute any of the possible implementations of the second aspect.
  • the present application provides a communication system.
  • the communication system includes a terminal and a network device, where the terminal may be the terminal described in the third aspect or the fifth aspect.
  • the network device may be the network device described in the fourth aspect or the sixth aspect.
  • the present application provides a computer-readable storage medium having instructions stored on the readable storage medium, which when run on a computer, cause the computer to execute the transmission power control method described in the first aspect.
  • the present application provides another computer-readable storage medium with instructions stored on the readable storage medium, which when run on a computer, cause the computer to execute the transmission power control method described in the second aspect.
  • this application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the transmission power control method described in the first aspect.
  • this application provides another computer program product containing instructions, which when run on a computer, causes the computer to execute the transmission power control method described in the second aspect.
  • FIG. 1 is a schematic diagram of the architecture of a wireless communication system provided by the present application.
  • Figure 2 is a flow chart of a power reduction method in the prior art
  • Figure 3 is a schematic diagram of 7 uplink and downlink configurations of an LTE radio frame
  • Figure 4 is a schematic diagram of an NR radio frame structure
  • FIG. 5 is a schematic flowchart of a transmission power control method provided by the present application.
  • FIG. 6 is a schematic diagram of a message flow to which the transmission power control method provided by the present application is applied;
  • Figure 7 is a schematic diagram of a non-standalone networking architecture
  • FIG. 8 is a schematic diagram of the hardware architecture of a terminal device provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of the hardware architecture of a network device provided by an embodiment of the present application.
  • FIG. 10 is a functional block diagram of the wireless communication system, terminal and network equipment provided by this application.
  • Fig. 11 is a schematic structural diagram of a processor of the present application.
  • Fig. 1 shows a wireless communication system 100 involved in the present application.
  • the wireless communication system 100 can work in a high-frequency frequency band, it can be the 5th Generation (5G) system, the new radio (NR) system, or the Long Term Evolution (LTE) system.
  • 5G 5th Generation
  • NR new radio
  • LTE Long Term Evolution
  • System machine to machine communication (Machine to Machine, M2M) system, the sixth-generation communication system that will evolve in the future, etc.
  • the wireless communication system 100 may include: one or more network devices 101, one or more terminals 103, and a core network 115. among them:
  • the network device 101 may be a base station.
  • the base station may be used to communicate with one or more terminals, or it may be used to communicate with one or more base stations with partial terminal functions (such as macro base stations and micro base stations, such as access points, Communication between).
  • the base station can be the Base Transceiver Station (BTS) in the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, or the Evolutional Node B (Evolutional Node B) in the LTE system , ENB), as well as base stations in 5G systems and New Air Interface (NR) systems.
  • BTS Base Transceiver Station
  • TD-SCDMA Time Division Synchronous Code Division Multiple Access
  • ENB Evolutional Node B
  • the base station may also be an access point (Access Point, AP), a transmission node (Trans TRP), a central unit (Central Unit, CU) or other network entities, and may include some or all of the functions of the above network entities .
  • AP Access Point
  • Trans TRP Transmission no
  • the terminal 103 may be distributed in the entire wireless communication system 100, and may be stationary or mobile.
  • the terminal 103 may be a user equipment UE, a mobile device, a mobile station, a mobile unit, an M2M terminal, a wireless unit, a remote unit, a user agent, a mobile client, etc. Wait.
  • the network device 101 may be used to communicate with the terminal 103 through the wireless interface 105 under the control of a network device controller (not shown).
  • the network device controller may be a part of the core network 115, or may be integrated into the network device 101.
  • the network device 101 can be used to transmit control information or user data to the core network 115 through a blackhaul interface 113 (such as an S1 interface).
  • the network device 101 and the network device 101 may also directly or indirectly communicate with each other through a backhaul (blackhaul) interface 111 (such as an X2 interface).
  • the wireless communication system 100 shown in FIG. 1 is only to illustrate the technical solution of the application more clearly, and does not constitute a limitation to the application.
  • Those of ordinary skill in the art will know that with the evolution of the network architecture and new services In the emergence of scenarios, the technical solutions provided in this application are equally applicable to similar technical problems.
  • the electromagnetic radiation generated by the terminal 103 will affect the human tissues close to the terminal 103.
  • some regulatory organizations have established SAR limits.
  • Step 1 In the continuous uplink transmission scenario, use 6 minutes as the SAR evaluation period to test the maximum transmission power that meets the SAR specification corresponding to different distances.
  • the terminal uses the maximum transmission power tested at this distance to comply with the SAR specification for continuous uplink transmission, and the electromagnetic energy absorbed by the human body within 6 minutes just meets the SAR Specifications, such as close to or equal to 1.6W/Kg specified by the FCC.
  • close means that the difference between the electromagnetic energy absorbed by the human body within 6 minutes and 1.6W/Kg is less than a specific value, such as 0.1W/Kg.
  • mapping table determines the power reduction required by the maximum transmission power of the SAR specification tested at different distances compared to the maximum transmission power of the terminal. The power drop corresponding to different distances is recorded in the mapping table.
  • Step 2 The terminal 103 detects the distance to the human body.
  • the terminal 103 may detect the distance by a distance sensor.
  • Step 3 According to the distance measured in step 2, from the mapping table obtained in step 1, find the power drop corresponding to the distance.
  • Step 4 Using the power reduction found in step 3, reduce the transmission power based on the maximum transmission power of the terminal.
  • Both LTE and NR support multiple uplink and downlink configurations.
  • the uplink and downlink configurations can be adjusted according to different business types to flexibly adapt to different business scenarios and meet the asymmetric uplink and downlink business requirements.
  • the subframes (or time slots or symbols) in the configuration period (such as 1/4 radio frame) may all be allocated to uplink transmission.
  • This extreme The uplink and downlink configuration can be referred to as the AllUplink configuration.
  • Full uplink configuration means that the entire configuration period is the uplink time, that is, the uplink time accounts for 100% of the configuration period, which can support continuous uplink transmission and adapt to the business scenario of continuous data upload.
  • the proportion of uplink time in the configuration period may be referred to as the proportion of uplink time.
  • the power reduction is determined under the above extreme uplink and downlink configuration, and the power reduction is relatively large. This can ensure that all business scenarios can use the power reduction determined by the prior art to comply with the SAR limit value. Because, in the SAR evaluation period (such as 6 minutes), continuous uplink transmission will generate more electromagnetic radiation than discontinuous uplink transmission, and more power needs to be reduced.
  • the uplink time configured in the uplink and downlink configuration may only account for the configuration period. It will be about 20%. Therefore, the power reduction determined in the AllUplink configuration will cause the uplink transmission power to be excessively reduced, which is not conducive to the terminal transmission performance.
  • RRC radio resource control
  • this application provides a transmission power control method.
  • the main inventive principle of this application may include: the terminal can obtain the uplink and downlink configuration (UL/DL assignment) from the network side. If the proportion of the uplink time configured in the uplink and downlink configuration is not 100%, that is, it is not an AllUplink configuration, the terminal can determine the power reduction that the uplink and downlink configuration can reduce compared to the full uplink configuration. The power reduction in the full uplink configuration can be determined with reference to the existing method shown in FIG. 2. Finally, the terminal can use the reduced power drop to reduce the uplink transmission power. In this way, compared with the prior art, the transmission power control method provided by the present application can increase the transmission power, can realize that the terminal obtains more power headroom during uplink transmission, improve the transmission performance, and at the same time comply with the SAR specification.
  • the transmission power control method provided by the present application can increase the transmission power, can realize that the terminal obtains more power headroom during uplink transmission, improve the transmission performance, and at the same time comply with the SAR specification.
  • network equipment can adjust the uplink and downlink configuration and change the ratio of uplink and downlink time resources.
  • the uplink and downlink configuration refers to the allocation of uplink time resources and downlink time resources within a period of time.
  • the uplink and downlink configuration can be configured periodically.
  • uplink data and downlink data can be transmitted at different times (such as subframes, time slots, symbols, etc.). That is to say, in a wireless frame, some time is used for network equipment (such as eNB) to send information and terminal to receive information, and other time is used for terminal to send information and network equipment to receive information.
  • network equipment such as eNB
  • the uplink and downlink configuration can be in units of subframes or time slots.
  • Fig. 3 exemplarily shows 7 uplink-downlink configurations (Uplink-downlink configurations) of the LTE radio frame.
  • the length of a radio frame is 10 milliseconds, which is divided into 10 subframes with a length of 1 millisecond.
  • subframe 0 and subframe 5 are downlink (D) subframes
  • subframe 1 is a special (S) subframe
  • the transmission after the special subframe is an uplink (U) subframe.
  • the configuration period of the uplink and downlink configurations is 5 milliseconds.
  • the configuration period for uplink and downlink configuration is 10 milliseconds.
  • the uplink and downlink configuration can be indicated in units of subframes.
  • the uplink and downlink configuration 0 is: the first subframe is a DL subframe, the third to fifth subframes are UL subframes, and the fourth subframe is a special subframe.
  • the uplink and downlink configuration can be adjusted, which can be achieved by modifying the length of each part in the special subframe.
  • the special subframe includes three parts: DwPTS (downlink pilot time slot), GP (guard period), and UpPTS (uplink pilot time slot).
  • DwPTS transmits downlink reference signals, and can also transmit some control information.
  • UpPTS can transmit some short random access channel (random access channel, RACH) and sounding reference signal (sounding reference signal, SRS) information.
  • GP is the protection time between upstream and downstream.
  • LTE specifies 9 special subframe configurations. With different special subframe configurations, the length of each part in the special subframe may be different.
  • the network device can configure which special subframe configuration is adopted for the special subframe through a high-level message (such as an RRC message).
  • the uplink and downlink configuration can be in units of time slots or symbols, which can also be called time slot format configuration.
  • Figure 4 exemplarily shows a radio frame structure in NR.
  • the configuration period of the uplink and downlink configuration is 2.5ms, and the subcarrier interval is 30KHz.
  • the number of downlink (DL) time slots is 3
  • the number of uplink (UL) time slots is 1
  • the number of special (S) time slots is 1.
  • the number of downlink (DL) symbols is 8
  • the number of uplink (UL) symbols is 2, and the symbols between the uplink symbols and the downlink symbols are called flexible symbols.
  • the flexible symbol can be used as a guard time (GP) for uplink and downlink switching, and can also be configured as a DL symbol or UL symbol in other ways.
  • GP guard time
  • the uplink and downlink configuration represented by the frame structure exemplarily shown in FIG. 4 is: time slot #0 to time slot #2 are DL time slots, time slot #4 is a UL time slot, and time slot #3 is a special time slot.
  • the uplink and downlink configuration can be adjusted and can be implemented by modifying the transmission direction of the elastic symbol in the special subframe.
  • the uplink and downlink configuration of NR can be very flexible, such as the AllUplink configuration.
  • Full uplink configuration means that the entire configuration period is the uplink time, that is, the uplink time accounts for 100% of the configuration period, which can support continuous uplink transmission and adapt to the business scenario of continuous data upload.
  • the proportion of the uplink time in the configuration period content may be referred to as the proportion of the uplink time.
  • the network device can issue the uplink and downlink configuration through system messages, such as system information block (SIB).
  • SIB system information block
  • the terminal can receive the system message sent by the network device during the cell search.
  • the uplink and downlink configuration can be indicated by the TDD-Config IE in SIB1.
  • the subframeAssignment information element can indicate which of the seven uplink and downlink configurations shown in FIG. 3 are adopted for a configuration period
  • the specialSubframePattern information element can indicate which special subframe configuration is adopted for the special subframe. Based on these two information elements, the terminal can determine the uplink and downlink configuration issued by the network device.
  • the uplink and downlink configuration can be indicated by the following two information elements (IE) in SIB 1: UL-DL-configuration-common and UL-DL-configuration-common-Set2.
  • the nrofDownlinkSlots cell can indicate the number of DL slots in a configuration period
  • the nrofDownlinkSymbols cell can indicate the number of DL symbols in a special slot
  • the nrofUplinkSlots cell can indicate the number of DL slots in a configuration period.
  • the number of UL time slots, nrofUplinkSymbols cell can indicate the number of UL symbols in a special time slot.
  • the terminal can determine the uplink and downlink configuration issued by the network device.
  • the user-level semi-static UL/DL configuration can be used to modify the transmission direction of elastic symbols in the cell-level semi-static UL/DL configuration.
  • the user-level semi-static UL/DL configuration can be implemented by the ServingCellConfig IE in the RRC message.
  • the ServingCellConfig IE the tdd-UL-DL-ConfigurationDedicated cell can specifically indicate which time slots and symbols need to modify the transmission direction.
  • the dynamic UL/DL configuration can be used to modify the transmission direction of elastic symbols in the cell-level semi-static UL/DL configuration or the user-level semi-static UL/DL configuration.
  • the dynamic UL/DL configuration can be implemented by DCI messages.
  • the network device can use the DCI format 2_0 to dynamically configure the time slot format to configure and modify the transmission direction of the elastic symbol.
  • the aforementioned user-level semi-static UL/DL configuration mode and dynamic UL/DL configuration mode can be applied to the NR communication system.
  • time division duplexing (TDM) patterns can be configured to indicate the allocation of uplink time resources and downlink time resources.
  • the first information may be the tdm-patternConfig IE carried in the RRCConnectionReconfiguration message.
  • TDM time division mutiplexing
  • CA Carrier aggregation
  • Mutual interference exists in both scenarios. In scenario 1, the second harmonic of LTE interferes with the NR frequency band, and in scenario 2, the multiple harmonics of one carrier interfere with the other carrier.
  • the terminal when the network is not independent, for the remote power control scenario of the base station, the terminal performs time-sharing uplink transmission to the NR base station and LTE base station.
  • the full transmit power is available, and TDM-Pattern will also be configured to improve coverage.
  • Single mode refers to the uplink mode in which the terminal only performs uplink transmission to a single base station (NR base station or LTE base station).
  • the terminal can access and query the first mapping table and the second mapping table.
  • the first mapping table may include multiple candidate distances and power drop amplitudes corresponding to the multiple candidate distances (referred to as delta 1).
  • the first mapping table can be obtained according to step 1 in the prior art shown in FIG. 2.
  • the second mapping table may include multiple candidate uplink time proportions and power increase corresponding to the multiple candidate uplink time proportions (referred to as delta2).
  • the power increase corresponding to an uplink time ratio indicates that the power of the uplink time ratio is less reduced compared to the full uplink configuration.
  • the delta 2 in the second mapping table can be an empirical value.
  • the transmission power can be reduced by 3dB compared with the 50% uplink proportion compared with the 100% uplink proportion; delta 2 can also be obtained through actual tests.
  • the contents of the first mapping table and the second mapping table shown in FIG. 5 are only examples and should not constitute a limitation.
  • the first mapping table and the second mapping table can be stored in the terminal, and can also be stored in a cloud server/storage device that the terminal can access, and there is no restriction here.
  • the transmission power method provided by the present application may include:
  • the terminal determines the distance between the terminal and the human body.
  • the terminal may detect the distance between the terminal and the human body through a distance sensor, and may also detect the distance between the terminal and the human body through a radar ranging sensor or an infrared ranging sensor.
  • the terminal may also determine the distance between the terminal and the human body according to a use case. For example, when it is determined that the user is making a call, and the handset of the terminal is turned on at this time, the terminal can determine that the distance between the user and the terminal is within a certain distance range, such as 0.1 mm to 1.0 mm. Not limited to this example, the terminal may also determine the distance between the user and the terminal according to other usage scenarios, which is not limited in this application.
  • S102 The terminal can find the power drop corresponding to the distance from the first mapping table according to the distance determined in S101.
  • the power drop corresponding to 1mm is 5dB.
  • the power drop determined by the test in this extreme scenario is the maximum power drop, because it can ensure that electromagnetic energy absorption specifications can also be complied with in other scenarios.
  • the terminal may receive the first information sent by the network device, and the first information may indicate the first uplink and downlink configuration.
  • the first information can be carried in a system message (such as SIB 1), can also be carried in a high-level message (such as an RRC message), and can also be carried in a PDCCH (such as a DCI message).
  • SIB 1 system message
  • RRC message high-level message
  • PDCCH PDCCH
  • the first information may be carried in the system message.
  • the first information may be TDD-Config IE in SIB1.
  • the first information may be UL-DL-configuration-common IE in SIB 1, and/or UL-DL-configuration-common-Set2IE.
  • the first information may be carried in a high-level message.
  • the first information may be the ServingCellConfig IE in the RRC message.
  • the first uplink and downlink configuration adopts the dynamic UL/DL configuration the first information may be carried in the DCI message.
  • the first information may be the ServingCellConfig IE in the RRC message.
  • the first uplink and downlink configuration may indicate the allocation of uplink time resources and downlink time resources within a period of time. For example, which subframes in the configuration period are UL subframes and which subframes are DL subframes. Regarding the uplink and downlink configuration, please refer to the foregoing content, which is not repeated here.
  • the terminal may determine the first uplink time proportion according to the first uplink and downlink configuration.
  • the first uplink time proportion refers to the proportion of the uplink time indicated by the first uplink and downlink configuration (for example, the length of the UL subframe) in the configuration period.
  • the first uplink and downlink configuration is the uplink and downlink configuration 0 shown in FIG. 3.
  • the uplink and downlink configuration 0 is: the 1st subframe is a DL subframe
  • the 3rd to 5th subframes are UL subframes
  • the 4th subframe is a special subframe
  • the proportion of the first uplink time is: 3/5.
  • 3 represents 3 UL subframes (third to fifth subframes)
  • 5 represents the number of subframes in the entire configuration period.
  • the terminal may look up the power increase corresponding to the first uplink time ratio from the second mapping table according to the first uplink time ratio (that is, the reduced power, delta 2).
  • the power increase corresponding to 50% is 3dB.
  • the maximum transmission power that complies with the electromagnetic energy absorption specification when the uplink time ratio is 50% is greater than the maximum transmission power that complies with the electromagnetic energy absorption specification when the uplink time ratio is 100%, which is 3dB larger.
  • the discontinuous uplink transmission with 50% of the uplink time will generate less electromagnetic radiation than the continuous uplink transmission with 100% of the uplink time, and the power will be reduced. less.
  • the power increase (that is, the reduced power, delta 2) is at most equal to the power decrease found in S102, and will not exceed the power decrease.
  • the terminal may determine the actual power reduction (may be referred to as delta 3) based on the power reduction found in S102 and the less reduced power (power increase) found in S105.
  • the actual power drop may be equal to the power drop found in S102 minus the less dropped power (power increase) found in S105.
  • the actual power drop (delta 3) can be determined by the power drop (delta 1) found in S102 and the power increase (delta 2) found in S105. If the proportion of the first uplink time is less than 100%, the actual power drop is smaller than the power drop found in S102. In this way, it is possible to reduce the transmission power as little as possible while complying with the SAR specification, obtain more power headroom, and improve the transmission performance while meeting the SAR specification.
  • delta 3 f(delta 1) , Delta 2), where f is a function with delta 1 and delta 2 as parameters, delta 3 and delta 1 are positively correlated, and delta 3 and delta 2 are negatively correlated.
  • the terminal may determine the actual transmission power according to the actual power drop (delta 3) determined in S106.
  • the power drop of the actual transmission power relative to the maximum transmission power of the terminal is the actual power drop (delta 3).
  • the terminal may perform uplink transmission on part or all of the uplink time resources indicated by the first uplink and downlink configuration, and the transmission power of the uplink transmission is the actual transmission power determined in S107.
  • the uplink time resource indicated by the first uplink and downlink configuration is for the entire cell.
  • the terminal may perform uplink transmission on part or all of the uplink time resource.
  • the specific uplink time resources occupied by the uplink transmission require the network device to issue an uplink grant (UL grant) for further instructions.
  • UL grant uplink grant
  • the terminal can also receive UL grant sent by the network device.
  • the UL grant can be carried in the DCI message and can be further determined according to the UL grant in the uplink time resource indicated by the first uplink and downlink configuration. Which part of the uplink time resource is the uplink data carried.
  • the terminal may also send a capability report message to the network device, such as user equipment capability (UE capability), and the capability report message may carry second information (for example, maxUplinkDutyCycle-PC2-FR1IE).
  • the second information may indicate the maximum proportion of the uplink time that the terminal can be scheduled within the SAR evaluation period (for example, 6 minutes).
  • the network device schedules uplink time resources for the terminal, it needs to consider the maximum proportion reported by the terminal.
  • the larger the maximum ratio the larger the uplink time resource scheduled by the network device for the terminal, that is, the uplink time resource configured by the UL grant, the larger the proportion of the uplink time resource indicated by the first uplink and downlink configuration.
  • the maximum ratio reported by the terminal may be greater than the first value (such as 90%), for example, the maximum ratio may be set to 100%.
  • the uplink time resource configured by the network device to the terminal through the UL grant can exceed the second value (for example, 100%) in the uplink time resource indicated by the first uplink and downlink configuration.
  • the maximum proportion in the terminal capability report is large, such as 100%, then the uplink time resources configured by the UL grant issued by the network equipment occupy the uplink time resources indicated by the first uplink-downlink ratio.
  • the ratio can be very high, such as 100%, which helps the terminal to be configured with more uplink time resources and facilitates the terminal to transmit more data in the uplink.
  • the terminal in the RRC idle state does not receive the first information from the network device, it can determine the actual power drop based on the limit uplink time ratio, such as 20%, to determine the uplink transmission Actual transmission power.
  • the limit uplink time ratio such as 20%
  • the terminal can determine the actual power reduction according to the uplink and downlink configuration (first uplink and downlink configuration) issued by the network side, which can achieve compliance with SAR specifications while reducing as little as possible Transmission power to obtain more power margin and improve transmission performance.
  • the uplink and downlink configuration on which the first mapping table is generated may be referred to as the second uplink and downlink configuration.
  • the proportion of the uplink time indicated by the second uplink and downlink configuration may be referred to as the proportion of the second uplink time.
  • the second uplink and downlink configuration may be a full uplink configuration, and in this case, the second uplink time ratio is 100%. It is not limited to the extreme uplink configuration such as the full uplink configuration, and the second uplink configuration may also be other uplink and downlink configurations with a high proportion of uplink time, for example, the proportion of uplink time is 95%.
  • the power decrease found in S102 may be referred to as the first power decrease
  • the power with less decrease (power increase) found in S105 may be referred to as the first power increase.
  • the first power reduction can be used to reduce the actual transmission power from the maximum transmission power of the terminal to the maximum transmission power that meets the electromagnetic energy absorption specification under the second uplink and downlink configuration.
  • the first power drop may be equal to the difference between the maximum transmission power of the terminal and the first measured power, and the first measured power is continuous uplink transmission measurement when the terminal is at the specific distance from the human body.
  • the maximum transmission power that meets the electromagnetic energy absorption specification is referred to as the first power increase.
  • the first power increase is equal to the difference between the maximum transmission power that meets the electromagnetic energy absorption specification under the first uplink and downlink configuration and the maximum transmission power that meets the electromagnetic energy absorption specification under the second uplink and downlink configuration. That is, the first power increase is the power with less drop.
  • the first power increase may also be referred to as the maximum transmission power that meets the electromagnetic energy absorption specification under the first uplink and downlink configuration, compared to the maximum transmission power that meets the electromagnetic energy absorption specification under the second uplink and downlink configuration, the power that can be increased.
  • the proportion of the first uplink time is smaller than the proportion of the second uplink time
  • the proportion of the uplink time indicated by the uplink and downlink configuration is less than the proportion of the second uplink time (for example, 100%).
  • the reduction of the actual power drop can obtain more power headroom, improve transmission performance, and comply with SAR specifications.
  • the electromagnetic energy absorption specification considered in the transmission power control method provided in this application may also be the maximum permissible exposure (MPE) specification for millimeter wave (mmWave) communication.
  • MPE maximum permissible exposure
  • FIG. 6 shows the main message flow involved after the terminal is turned on.
  • the following describes the application of the transmission power control method provided in this application in conjunction with the flow. Expand below:
  • the terminal When the terminal is turned on, it needs to search for the cell and obtain synchronization.
  • the terminal receives the downlink synchronization signal sent by the network device: primary synchronization signal (primary synchronization signal, PSS) and secondary synchronization signal (secondary synchronization signal, SSS).
  • primary synchronization signal primary synchronization signal
  • secondary synchronization signal secondary synchronization signal
  • Phase 2 Obtain system information of the cell (S202)
  • System information is cell-level information, which is effective for all UEs accessing the cell.
  • System information can be divided into a master information block (master information block, MIB) and multiple system information blocks (system information block, SIB).
  • the network device may carry the indication information of the first uplink and downlink configuration in the system information, such as SIB 1, that is, the first information.
  • SIB 1 system information
  • the method of issuing the first uplink and downlink configuration through system information (such as SIB 1) is the aforementioned cell-level semi-static UL/DL configuration method.
  • SIB 1 refers to the cell-level semi-static UL/DL configuration section for details, which will not be repeated here.
  • Subsequent uplink transmission can occur in the following scenarios: scenario 1. A scenario where a terminal in an RRC idle state performs random access; scenario 2. A scenario where a terminal in the RRC connected state transmits uplink data.
  • the terminal After the cell search process, the terminal has achieved downlink synchronization with the cell, so the terminal can receive downlink data. However, the terminal can perform uplink transmission only if it has achieved uplink synchronization with the cell.
  • the terminal establishes a connection with the cell through a random access process and obtains uplink synchronization.
  • the random access process can include the following steps:
  • S205 The terminal sends a random access preamble to the network device to initiate a random access request.
  • the network device After detecting the preamble, the network device returns a random access response (random access response) to the terminal.
  • Msg3 contains different content.
  • Msg3 can carry an RRC Connection Request (RRC Connection Request).
  • RRC Connection Request In an RRC connection reestablishment scenario, Msg3 can carry an RRC connection reestablishment request (RRCConnectionReestablishmentRequest).
  • RRCConnectionReestablishmentRequest In the cell handover scenario, Msg3 can carry the RRC handover complete message.
  • Figure 6 shows the initial access scenario, and Msg3 carries RRC Connection Request.
  • S205 and S209 are uplink transmission, and the actual transmission power can be determined by the power transmission control method provided in this application.
  • the indication information ie, the first information
  • the indication information of the first uplink and downlink configuration on which the actual transmission power is determined may be carried in the system information (such as SIB 1).
  • RRC connection reconfiguration is to modify the RRC connection, such as establishing, modifying or releasing radio bearers, and establishing, modifying or releasing measurements.
  • RRC connection reconfiguration can include the following steps:
  • S215 The network device sends an RRC connection reconfiguration (RRCConnectionReconfiguration) message to the terminal.
  • RRCConnectionReconfiguration RRC connection reconfiguration
  • the network device may carry the indication information of the first uplink and downlink configuration in the RRCConnectionReconfiguration message, that is, the first information.
  • the manner of delivering the first uplink and downlink configuration through the RRCConnectionReconfiguration message may be the aforementioned user-level semi-static UL/DL configuration manner.
  • the first information carried in the RRCConnectionReconfiguration message can be used to modify the first uplink and downlink configuration issued by the SIB1. It is not limited to RRCConnectionReconfiguration, and other RRC messages issued by the network device may also issue the first uplink and downlink configuration.
  • RRCConnectionReconfiguration and other RRC messages issued by the network device may also issue the first uplink and downlink configuration.
  • the terminal can further determine the modified first uplink and downlink configuration according to the first information carried in the RRCConnectionReconfiguration message.
  • the actual transmission power of subsequent uplink transmission is determined according to the modified first uplink and downlink configuration.
  • Subsequent uplink transmission may occur in the following scenario: a scenario where a terminal in the RRC connected state transmits uplink data.
  • S219 The terminal sends an SRS. Similar to downlink, network equipment needs to perform uplink channel estimation when performing uplink scheduling. This is obtained by measuring the SRS sent by the terminal.
  • the terminal When there is uplink data to be transmitted, the terminal sends a scheduling request (SR) to the network device to inform the network device that there is data to send, and request the network device to allocate uplink resources.
  • SR scheduling request
  • Uplink resources include uplink time resources and uplink frequency domain resources.
  • the network device issues a UL grant to the terminal, and the UL grant may be carried in the DCI message.
  • UL grant can indicate the uplink resources allocated to the terminal by the network equipment. Specifically, the proportion of the uplink time resources allocated to the terminal indicated by the UL grant in the time resources indicated by the first uplink and downlink configuration is less than or equal to 100%.
  • the network device may carry the indication information of the first uplink and downlink configuration in the DCI message, that is, the first information.
  • the manner of delivering the first uplink and downlink configuration through the DCI message may be the aforementioned dynamic UL/DL configuration manner.
  • the first information carried in the DCI message can be used to modify the first uplink and downlink configuration issued by the SIB 1, or to modify the first uplink and downlink configuration that has been modified by the RRC message.
  • other physical downlink control channel (PDCCH) messages issued by the network device may also issue the first uplink and downlink configuration.
  • PDCCH physical downlink control channel
  • the terminal can further determine the modified first based on the first information carried in the DCI message.
  • the actual transmission power of the subsequent uplink transmission is determined according to the further modified first uplink and downlink configuration.
  • Subsequent uplink transmission may occur in the following scenario: a scenario where a terminal in the RRC connected state transmits uplink data.
  • the terminal After obtaining the UL grant, the terminal transmits uplink data on the uplink resources allocated to the terminal by the network device.
  • the actual transmission power can be determined by the power transmission control method provided in this application. For details, please refer to the method embodiment in FIG. 5, which will not be repeated here.
  • the first uplink and downlink configuration based on which the actual transmission power is determined can be determined in the following ways:
  • Manner 1 Determine the first uplink and downlink configuration according to the first information carried in the system information (such as SIB 1).
  • Manner 2 According to the first information carried in the RRC message (such as RRCConnectionReconfiguration), modify the first uplink and downlink configuration that has been issued by the system information (such as SIB 1).
  • SIB system information
  • Manner 3 According to the first information carried in the DCI message, modify the first uplink and downlink configuration that has been issued by the system information (such as SIB 1), or further modify the first uplink and downlink configuration modified by the RRC message.
  • system information such as SIB 1
  • the first uplink and downlink configuration can be progressively configured through cell-level semi-static UL/DL configuration, user-level semi-static UL/DL configuration, and dynamic UL/DL configuration.
  • the TDM pattern can be used to indicate the allocation of uplink time resources and downlink time resources.
  • the first information is the tdm-patternConfig IE carried in the RRCConnectionReconfiguration message.
  • the first uplink configuration indicated by the first information carried in SIB 1 is shown in the uplink and downlink configuration 220 in Figure 6, specifically: when time slot #0 to time slot #2 are DL Slot, slot #4 is a UL slot, and slot #3 is a special slot.
  • the uplink and downlink configuration can be adjusted and can be implemented by modifying the transmission direction of the elastic symbol in the special subframe.
  • the number of downlink (DL) symbols is 8
  • the number of uplink (UL) symbols is 2
  • the symbols between the uplink symbols and the downlink symbols are called flexible symbols.
  • the flexible symbol can be used as a guard time (GP) for uplink and downlink switching, and can also be configured as a DL symbol or a UL symbol by other methods (such as user-level semi-static UL/DL configuration, dynamic UL/DL configuration).
  • GP guard time
  • the flexible symbol can also be configured as a DL symbol or a UL symbol by other methods (such as user-level semi-static UL/DL configuration, dynamic UL/DL configuration).
  • the first information carried in the RRCConnectionReconfiguration message transmitted in S215 can modify the transmission direction of the elastic symbol in the uplink and downlink configuration 220. For example, the first flexible symbol between the DL symbol and the UL conformance is modified to the UL symbol.
  • the first information carried in the DCI message transmitted in S223 may further modify the transmission direction of the elastic symbol in the uplink and downlink configuration 220.
  • the second flexible symbol between the DL symbol and the UL conformance is modified to the UL symbol.
  • the first information carried in the DCI message can modify the first uplink and downlink configuration issued by the SIB 1, especially when the RRC message does not modify the first uplink and downlink configuration.
  • the transmission power control method provided in this application can also be applied to a non-standalone networking architecture.
  • the terminal 103 can be connected to two network devices, such as network device 101-A (LTE eNB) and network device 101-B (NR gNB) .
  • network equipment 101-A LTE eNB
  • LTE core network evolved packet core (EPC)
  • NR gNB network equipment 101-B
  • EPC evolved packet core
  • NR gNB NR core network
  • NGC next generation core network
  • the network device 101-A (LTE eNB) is the main network device
  • the network device 101-B (NR gNB) is the auxiliary network device.
  • the terminal can receive two sets of first uplink and downlink configurations respectively issued by network equipment 101-A (LTE eNB) and network equipment 101-B (NR gNB).
  • LTE eNB network equipment 101-A
  • NR gNB network equipment 101-B
  • Configuration A can perform progressive configuration through cell-level semi-static UL/DL configuration, user-level semi-static UL/DL configuration, and dynamic UL/DL configuration.
  • Configuration B can be configured progressively through user-level semi-static UL/DL configuration and dynamic UL/DL configuration.
  • Configuration B cannot be delivered through the SIB 1 message because the terminal cannot receive the SIB 1 delivered by the secondary network device.
  • the terminal may determine the actual power drop when performing uplink transmission to the network device 101-A according to the configuration A, so as to determine the actual transmission power for uplink transmission to the network device 101-A.
  • the terminal may determine the actual power drop during uplink transmission to the network device 101-B according to the configuration B, thereby determining the actual transmission power for the uplink transmission to the network device 101-B.
  • the actual transmission power of these two types of uplink transmissions can be determined by the power transmission control method provided in this application. For details, please refer to the method embodiment in FIG. 5, which will not be repeated here.
  • the terminal when transmitting to different network devices, the terminal can determine the actual power reduction according to the corresponding uplink and downlink configuration to obtain more power headroom and improve transmission. Performance, while meeting SAR specifications.
  • FIG. 8 shows a terminal 300 provided by some embodiments of the present application.
  • the terminal 300 may include: an input and output module (including an audio input and output module 318, a key input module 316, a display 320, etc.), a user interface 302, one or more terminal processors 304, a transmitter 306, a receiver 308, coupler 310, antenna 314, and memory 312. These components can be connected through a bus or in other ways.
  • Figure 8 uses a bus connection as an example. among them:
  • the communication interface 301 can be used for the terminal 300 to communicate with other communication devices, such as a base station.
  • the base station may be the network device 400 shown in FIG. 9.
  • the communication interface 301 refers to the interface between the terminal processor 304 and the transceiver system (consisting of the transmitter 306 and the receiver 308), such as the X1 interface in LTE.
  • the communication interface 301 may include: Global System for Mobile Communication (GSM) (2G) communication interface, Wideband Code Division Multiple Access (WCDMA) (3G) communication interface, and One or more of Long Term Evolution (LTE) (4G) communication interfaces, etc., can also be 4.5G, 5G, or future new air interface communication interfaces.
  • GSM Global System for Mobile Communication
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • 4G Long Term Evolution
  • the terminal 300 may also be configured with a wired communication interface 301, such as a local access network (Local Access Network, LAN) interface.
  • the antenna 314 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in a free space, or convert electromagnetic waves in a free space into electromagnetic energy in a transmission line.
  • the coupler 310 is used to divide the mobile communication signal received by the antenna 314 into multiple channels and distribute them to multiple receivers 308.
  • the transmitter 306 can be used to transmit and process the signal output by the terminal processor 304.
  • the receiver 308 can be used to receive and process the mobile communication signal received by the antenna 314.
  • the transmitter 306 and the receiver 308 can be regarded as one wireless modem.
  • the number of the transmitter 306 and the receiver 308 may each be one or more.
  • the terminal 300 may also include other communication components, such as a GPS module, a Bluetooth (Bluetooth) module, and a wireless high-fidelity (Wireless Fidelity, Wi-Fi) module. Not limited to the above-mentioned wireless communication signals, the terminal 300 may also support other wireless communication signals, such as satellite signals, shortwave signals, and so on. Not limited to wireless communication, the terminal 300 may also be configured with a wired network interface (such as a LAN interface) to support wired communication.
  • a wired network interface such as a LAN interface
  • the input and output module can be used to realize the interaction between the terminal 300 and the user/external environment, and can mainly include an audio input and output module 318, a key input module 316, a display 320, and so on.
  • the input/output module may also include a camera, a touch screen, a sensor, and so on.
  • the input and output modules all communicate with the terminal processor 304 through the user interface 302.
  • the memory 312 is coupled with the terminal processor 304, and is used to store various software programs and/or multiple sets of instructions.
  • the memory 312 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices.
  • the memory 312 may store an operating system (hereinafter referred to as system), such as an embedded operating system such as ANDROID, IOS, WINDOWS, or LINUX.
  • system such as an embedded operating system such as ANDROID, IOS, WINDOWS, or LINUX.
  • the memory 312 may also store a network communication program, and the network communication program may be used to communicate with one or more additional devices, one or more terminal devices, and one or more network devices.
  • the memory 312 can also store a user interface program, which can vividly display the content of the application program through a graphical operation interface, and receive user control operations on the application program through input controls such as menu
  • the memory 312 may be used to store an implementation program on the terminal 300 side of the transmission power control method provided in one or more embodiments of the present application.
  • the implementation of the transmission power control method provided by one or more embodiments of the present application please refer to the subsequent embodiments.
  • the terminal processor 304 can be used to read and execute computer-readable instructions. Specifically, the terminal processor 304 may be used to call a program stored in the memory 312, such as a program for implementing the transmission power control method provided by one or more embodiments of the present application on the terminal 300 side, and execute instructions contained in the program.
  • a program stored in the memory 312 such as a program for implementing the transmission power control method provided by one or more embodiments of the present application on the terminal 300 side, and execute instructions contained in the program.
  • the terminal processor 304 may be a modem (Modem) processor, and is a module that implements main functions in wireless communication standards such as 3GPP and ETSI. Modem can be used as a separate chip, or it can be combined with other chips or circuits to form a system-level chip or integrated circuit. These chips or integrated circuits can be applied to all devices that implement wireless communication functions, including: mobile phones, computers, notebooks, tablets, routers, wearable devices, automobiles, home appliances, etc. It should be noted that, in different implementation manners, the terminal processor 304 processor can be used as a separate chip, coupled with the off-chip memory, that is, the chip does not contain memory; or the terminal processor 304 processor is coupled with the on-chip memory. Integrated in the chip, that is, the chip contains memory.
  • the terminal 300 may be the terminal 103 in the wireless communication system 100 shown in FIG. 1, and may be implemented as a mobile device, a mobile station, a mobile unit, a wireless unit, a remote unit, and a user agent. , Mobile client and so on.
  • the terminal 300 shown in FIG. 8 is only an implementation manner of the present application. In actual applications, the terminal 300 may also include more or fewer components, which is not limited here.
  • FIG. 9 shows a network device 400 provided by some embodiments of the present application.
  • the network device 400 may include: a communication interface 403, one or more network device processors 401, a transmitter 407, a receiver 409, a coupler 411, an antenna 413, and a memory 405. These components can be connected via a bus or in other ways.
  • Fig. 9 uses a bus connection as an example. among them:
  • the communication interface 403 can be used for the network device 400 to communicate with other communication devices, such as terminal devices or other base stations.
  • the terminal device may be the terminal 300 shown in FIG. 8.
  • the communication interface 301 refers to the interface between the network device processor 401 and the transceiver system (consisting of the transmitter 407 and the receiver 409), such as the S1 interface in LTE.
  • the communication interface 403 may include: a global system for mobile communications (GSM) (2G) communication interface, a wideband code division multiple access (WCDMA) (3G) communication interface, and a long-term evolution (LTE) (4G) communication interface, etc.
  • GSM global system for mobile communications
  • WCDMA wideband code division multiple access
  • LTE long-term evolution
  • the network device 400 may also be configured with a wired communication interface 403 to support wired communication.
  • the backhaul link between one network device 400 and another network device 400 may be a wired communication connection.
  • the antenna 413 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in a free space, or convert electromagnetic waves in a free space into electromagnetic energy in a transmission line.
  • the coupler 411 can be used to divide the mobile communication signal into multiple channels and distribute them to multiple receivers 409.
  • the transmitter 407 can be used to transmit and process the signal output by the network device processor 401.
  • the receiver 409 can be used to receive and process the mobile communication signal received by the antenna 413.
  • the transmitter 407 and the receiver 409 can be regarded as a wireless modem.
  • the number of the transmitter 407 and the receiver 409 may each be one or more.
  • the memory 405 is coupled with the network device processor 401, and is used to store various software programs and/or multiple sets of instructions.
  • the memory 405 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid-state storage devices.
  • the memory 405 may store an operating system (hereinafter referred to as the system), such as embedded operating systems such as uCOS, VxWorks, RTLinux, etc.
  • the memory 405 may also store a network communication program, which may be used to communicate with one or more additional devices, one or more terminal devices, and one or more network devices.
  • the network device processor 401 may be used to perform wireless channel management, implement call and communication link establishment and teardown, and control the handover of user equipment in the control area.
  • the network device processor 401 may include: management/communication module (Administration Module/Communication Module, AM/CM) (for voice channel exchange and information exchange center), basic module (Basic Module, BM) (use To complete call processing, message processing, radio resource management, wireless link management and circuit maintenance functions), code conversion and submultiplexer (Transcoder and SubMultiplexer, TCSM) (used to complete multiplexing, demultiplexing and code conversion functions) )and many more.
  • management/communication module administering Module/Communication Module, AM/CM
  • Basic Module Basic Module
  • TCSM code conversion and submultiplexer
  • the network device processor 401 may be used to read and execute computer-readable instructions. Specifically, the network device processor 401 may be used to call a program stored in the memory 405, such as the implementation program of the transmission power control method provided by one or more embodiments of the present application on the network device 400 side, and execute the programs included in the program. instruction.
  • the network device processor 401 may be a modem (Modem) processor, and is a module that implements main functions in wireless communication standards such as 3GPP and ETSI. Modem can be used as a separate chip, or it can be combined with other chips or circuits to form a system-level chip or integrated circuit. These chips or integrated circuits can be applied to all network-side devices that implement wireless communication functions. For example, in LTE networks, they are called evolved NodeBs (evolved NodeBs, eNBs or eNodeBs). In the 3rd Generation, 3G In a network, it is called a Node B (Node B), etc. In a 5G network, it is called a 5G base station (NR NodeB, gNB).
  • eNB evolved NodeBs
  • the network device processor 401 may be used as a separate chip and coupled with off-chip memory, that is, the chip does not contain memory; or the network device processor 401 may be coupled with the on-chip memory. Integrated in the chip, that is, the chip contains memory.
  • the network device 400 may be the network device 101 in the wireless communication system 100 shown in FIG. 1, and may be implemented as a base transceiver station, a wireless transceiver, a basic service set (BSS), and an extended service set (ESS). , NodeB, eNodeB, etc.
  • the network device 400 may be implemented as several different types of base stations, such as macro base stations, micro base stations, and so on.
  • the network device 400 may apply different wireless technologies, such as cell wireless access technology or WLAN wireless access technology.
  • the network device 400 shown in FIG. 9 is only an implementation manner of the present application. In actual applications, the network device 400 may also include more or fewer components, which is not limited here.
  • FIG. 10 shows a schematic structural diagram of a wireless communication system provided by an embodiment of the present application.
  • the wireless communication system 10 may include: a terminal 600 and a network device 500.
  • the terminal 600 and the network device 500 may be the terminal 103 and the network device 101 in the wireless communication system 100 shown in FIG. 1, respectively.
  • the terminal 600 may include: a processing unit 601 and a communication unit 603. among them:
  • the communication unit 603 may be used to receive the first information sent by the network device 500.
  • the first information may indicate the first uplink and downlink configuration.
  • the processing unit 601 may be configured to perform uplink transmission on part or all of the uplink time resources indicated by the first uplink and downlink configuration.
  • the actual transmission power of the uplink transmission is equal to the maximum transmission power of the terminal minus the actual power drop, which complies with electromagnetic energy absorption specifications.
  • the actual power decrease is calculated from the first power decrease and the first power increase, and the actual power decrease is smaller than the first power decrease.
  • the first power increase is equal to the difference between the maximum transmission power that meets the electromagnetic energy absorption specification under the first uplink and downlink configuration and the maximum transmission power that meets the electromagnetic energy absorption specification under the second uplink and downlink configuration; the first uplink and downlink configuration
  • the determined proportion of the first uplink time is less than the proportion of the second uplink time determined by the second uplink and downlink configuration; the first power reduction is used in the second uplink and downlink configuration, and the terminal is at a first distance from the human body.
  • the power is reduced from the maximum transmission power of the terminal to the maximum transmission power that meets electromagnetic energy absorption specifications.
  • the terminal 600 may further include a distance measuring unit (not shown), which may be used to determine the first distance.
  • the ranging unit can be a proximity sensor, a radar ranging sensor or an infrared ranging sensor.
  • the ranging unit can also be used to determine the distance between the terminal and the human body according to a use case. For example, when it is determined that the user is making a call, and the handset of the terminal is turned on at this time, the terminal can determine that the distance between the user and the terminal is within a certain distance range, such as 0.1 mm to 1.0 mm.
  • the processing unit 601 may also be configured to find the power drop corresponding to the distance from the first mapping table according to the first distance determined by the distance measuring unit.
  • the first mapping table may include multiple candidate distances and the power reduction amplitudes (referred to as delta 1) corresponding to the multiple candidate distances.
  • the first mapping table can be obtained according to step 1 in the prior art shown in FIG. 2.
  • the processing unit 601 may also be configured to determine the first uplink time proportion according to the first uplink and downlink configuration, and can find the power increase corresponding to the first uplink time proportion from the second mapping table according to the first uplink time proportion (ie Reduced power, delta 2).
  • the second mapping table may include multiple candidate uplink time proportions and power increase (delta 2 for short) corresponding to the multiple candidate uplink time proportions.
  • the power increase corresponding to an uplink time ratio indicates that the power of the uplink time ratio is less reduced compared to the full uplink configuration.
  • the first information may be carried in a system message (such as SIB 1), may also be carried in a higher layer message (such as an RRC message), or may also be carried in a PDCCH (such as a DCI message).
  • SIB 1 system message
  • RRC message higher layer message
  • PDCCH PDCCH
  • the communication unit 603 may also be configured to receive the UL grant sent by the network device before receiving the first information.
  • the UL grant may be carried in the DCI message and may be included in the uplink time resource indicated by the first uplink and downlink configuration According to the UL grant, it is further determined which part of the uplink time resource the uplink data is carried.
  • the communication unit 603 may also be used to send a capability report message to the network device, and the capability report message may carry second information (for example, maxUplinkDutyCycle-PC2-FR1IE).
  • the second information may indicate the maximum proportion of the uplink time that the terminal can be scheduled within the SAR evaluation period (for example, 6 minutes).
  • the maximum ratio may be greater than the first value (such as 90%), for example, the maximum ratio may be set to 100%.
  • the uplink time resource configured by the UL grant for the terminal can account for a proportion within the uplink time resource indicated by the first uplink and downlink configuration to exceed the second value (for example, 100%).
  • the uplink time resources configured by the UL grant issued by the network equipment occupy the uplink time resources indicated by the first uplink-downlink ratio.
  • the ratio can be very high, such as 100%, which helps the terminal to be configured with more uplink time resources and facilitates the terminal to transmit more data in the uplink.
  • the network device 500 may include: a processing unit 503 and a communication unit 501. among them:
  • the communication unit 501 may be used to send the first information to the terminal 600.
  • the communication unit 501 may also be configured to receive the uplink signal transmitted by the terminal 600 on part or all of the uplink time resources indicated by the first uplink and downlink configuration.
  • the actual transmission power of the terminal transmitting the uplink signal is equal to the maximum transmission power of the terminal minus the actual power drop, which conforms to the electromagnetic energy absorption specification.
  • the actual power decrease is calculated from the first power decrease and the first power increase, and the actual power decrease is smaller than the first power decrease.
  • the first power increase is equal to the difference between the maximum transmission power that meets the electromagnetic energy absorption specification under the first uplink and downlink configuration and the maximum transmission power that meets the electromagnetic energy absorption specification under the second uplink and downlink configuration; determined by the first uplink and downlink configuration
  • the proportion of the first uplink time is less than the proportion of the second uplink time determined by the second uplink and downlink configuration; the first power reduction is used in the second uplink and downlink configuration, and the terminal is at a first distance from the human body, and the transmission power is reduced from The maximum transmission power of the terminal is reduced to the maximum transmission power that meets electromagnetic energy absorption specifications.
  • the communication unit 501 may also be configured to send a UL grant to the terminal 600 before sending the first information.
  • the UL grant may further indicate which part of the uplink time resource indicated by the first uplink and downlink configuration the uplink signal is carried.
  • the UL grant can be carried in the DCI message.
  • the communication unit 501 may also be used to send a capability report message to the receiving terminal 600, and the capability report message may carry second information (for example, maxUplinkDutyCycle-PC2-FR1IE).
  • the second information may indicate the maximum proportion of the uplink time that the terminal can be scheduled within the SAR evaluation period (for example, 6 minutes).
  • the maximum ratio may be greater than the first value (such as 90%), for example, the maximum ratio may be set to 100%.
  • the uplink time resource configured by the UL grant for the terminal can account for a proportion within the uplink time resource indicated by the first uplink and downlink configuration to exceed the second value (for example, 100%).
  • the uplink time resources configured by the UL grant issued by the network equipment occupy the uplink time resources indicated by the first uplink-downlink ratio.
  • the ratio can be very high, such as 100%, which helps the terminal to be configured with more uplink time resources and facilitates the terminal to transmit more data in the uplink.
  • the processing unit may be a processor or a controller. It can implement or execute various exemplary logical blocks, units and circuits described in conjunction with the disclosure of this application.
  • the processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, and so on.
  • the storage unit may be a memory.
  • the communication unit may specifically be a radio frequency circuit, a Bluetooth chip, a Wi-Fi chip, and other devices that interact with other electronic devices.
  • the apparatus 50 may include: a processor 501 and one or more interfaces 502 coupled to the processor 501. among them:
  • the processor 501 can be used to read and execute computer-readable instructions.
  • the processor 501 may mainly include a controller, an arithmetic unit, and a register.
  • the controller is mainly responsible for instruction decoding, and sends out control signals for the operation corresponding to the instruction.
  • the arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations and logical operations, etc., and can also perform address operations and conversions.
  • the register is mainly responsible for storing the register operands and intermediate operation results temporarily stored during the execution of the instruction.
  • the hardware architecture of the processor 501 may be an application specific integrated circuit (ASIC) architecture, a MIPS architecture, an ARM architecture, or an NP architecture, etc.
  • the processor 501 may be single-core or multi-core.
  • the interface 502 can be used to input data to be processed to the processor 501, and can output the processing result of the processor 501 externally.
  • the interface 502 may be a General Purpose Input Output (GPIO) interface, which may be connected to multiple peripheral devices (such as radio frequency modules, etc.).
  • GPIO General Purpose Input Output
  • the interface 502 may also include multiple independent interfaces, such as an Ethernet interface, a mobile communication interface (such as an X1 interface), etc., which are respectively responsible for the communication between different peripheral devices and the processor 501.
  • the processor 501 may be configured to call the implementation program of the transmission power control method provided in one or more embodiments of the application on the network device side or the terminal side from the memory, and execute the instructions contained in the program.
  • the interface 502 can be used to output the execution result of the processor 501.
  • the interface 503 may be specifically used to output the processing result of the processor 501.
  • the interface 503 can be used to input the first information (indicating the first uplink and downlink configuration) received by the receiver to the processor 501, and the processor 501 can be used to determine the upper and lower settings. The amount of power reduction that the row configuration can reduce compared to the full uplink configuration, and then determine the actual power reduction.
  • the processor 501 may be used to determine the first uplink and downlink configuration, and generate first information.
  • the interface 503 may output the first information (indicating the first uplink and downlink configuration) to the transmitter, and the transmitter may be used to transmit the first information (indicating the first uplink and downlink configuration).
  • processor 501 and the interface 502 can be implemented through hardware design, software design, or a combination of software and hardware, which is not limited here.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the modules or units is only a logical function division.
  • there may be other division methods for example, multiple units or components may be It can be combined or integrated into another device, or some features can be omitted or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate parts may or may not be physically separate.
  • the parts displayed as units may be one physical unit or multiple physical units, that is, they may be located in one place, or they may be distributed to multiple different places. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.
  • the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium.
  • the technical solutions of the embodiments of the present application are essentially or the part that contributes to the prior art, or all or part of the technical solutions can be embodied in the form of software products, which are stored in a storage medium It includes several instructions to make a device (may be a single-chip microcomputer, a chip, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

本申请提供一种传输功率控制方法，终端可以从网络侧获得上下行配置(UL/DL assignment)。如果该上下行配置所配置的上行时间占比不是100％，即不是全上行(AllUplink)配置，则终端可以确定该上下行配置相对于全上行配置能够减少的功率降幅。全上行配置时的功率降幅可以参考图2所示的现有方式来确定。这样，相比现有技术可以抬升传输功率，可实现终端在上行传输时获得更多的功率余量，提升传输性能，同时又能符合电磁能量吸收规范。

Description

传输功率控制方法、相关设备及系统
本申请要求在2019年5月3日提交中国国家知识产权局、申请号为201910375078.4的中国专利申请的优先权，发明名称为“传输功率控制方法、相关设备及系统”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信技术领域，尤其涉及一种传输功率控制方法、相关设备及系统。
背景技术
电磁能量吸收比(specific absorption rate，SAR)是一个标准量，用来测量人体组织对手机等终端产品产生的电磁能量的吸收。SAR的单位是W/Kg(瓦/千克)。SAR越大，电磁辐射对人体的影响越大；反之则影响较小。目前，一些规范机构都设立了电磁能量吸收规范，设置了SAR限制值。SAR限制值是指6分钟内，每千克人体组织最多被允许吸收的电磁能量。例如，美国联邦传播委员会(federal communication commission，FCC)设立的SAR限制值为1.6W/Kg，欧盟电信标准组织(european telecommunications standard insitute，ESTI)设立的SAR限制值为2.0W/Kg。
目前，采取降低终端的传输功率的方式来遵守SAR限制值。但是，现有技术中，为了确保各种业务场景下都能遵守SAR限制值，需要降低的传输功率是在连续上行传输这种严格的也场景下确定的，并未有区别考虑不同业务场景的传输特点。
发明内容
本申请提供了一种传输功率控制方法、相关设备及系统，终端可以根据网络侧下发的上下行配置确定实际功率降幅，可实现终端在上行传输时获得更多的功率余量，提升传输性能，同时又能符合电磁能量吸收规范。
第一方面，本申请提供了一种传输功率控制方法，应用于终端(如手机)侧，该方法可包括：终端接收网络设备发送的第一信息，第一信息指示第一上下行配置。然后，终端在第一上下行配置指示的部分或全部上行时间资源上进行上行传输。上行传输的实际传输功率等于终端的最大传输功率减去实际功率降幅，符合电磁能量吸收规范。实际功率降幅由第一功率降幅和第一功率增幅计算得到，实际功率降幅小于第一功率降幅。
其中，第一功率增幅等于第一上下行配置下符合电磁能量吸收规范的最大传输功率，与，第二上下行配置下符合电磁能量吸收规范的最大传输功率，的差值。第一上下行配置所确定的第一上行时间占比小于第二上下行配置所确定的第二上行时间占比。第一功率降幅用于在第二上下行配置下，且终端与人体相距第一距离，将传输功率从终端的最大传输功率降低至符合电磁能量吸收规范的最大传输功率。
第二方面，本申请提供了一种传输功率控制方法，应用于网络设备(如gNB)侧，该方法可包括：网络设备向终端发送第一信息，第一信息指示第一上下行配置。然后，网络 设备可接收终端传输的上行信号。
这里，终端传输上行信号的实际传输功率等于终端的最大传输功率减去实际功率降幅，符合电磁能量吸收规范。实际功率降幅由第一功率降幅和第一功率增幅计算得到，实际功率降幅小于第一功率降幅。关于第一功率降幅和第一功率增幅的说明，可参考第一方面，这里不赘述。
在第一方面或第二方面中，第一上下行配置可指示一段时间内上行时间资源和下行时间资源的分配。例如配置周期内的哪些子帧是UL子帧，哪些子帧是DL子帧。关于上下行配置，可以参考前述内容，这里不再赘述。
在第一方面或第二方面中，第一映射表中可包括多个候选距离以及这多个候选距离对应的功率降幅(简称delta 1)。第一映射表可以根据图2所示的现有技术中的步骤1得到。第二映射表可包括多个候选上行时间占比以及这多个候选上行时间占比对应的功率增幅(简称delta 2)。一个上行时间占比对应的功率增幅表示该上行时间占比相比全上行配置少降的功率。在SAR评估周期(如6分钟)内，非连续上行传输(上行时间占比小于100％)比连续上行传输(全上行配置，上行时间占比为100％)产生更少的电磁辐射，需要降低的功率也就更少。第二映射表中的delta 2可以是经验值，比如50％上行占比相较于100％上行占比，传输功率可以少降3dB；delta 2也可以通过实际测试得到。
结合第一方面或第二方面，第二上下行配置可以为全上行配置，此时第二上行时间占比为100％。不限于全上行配置这种极端上行配置，第二上行配置还可以是其他上行时间占比很高的上下行配置，例如上行时间占比为95％。
实施第一方面和第二方面描述的方法，终端可以从网络侧获得上下行配置(UL/DL assignment)。如果该上下行配置所配置的上行时间占比不是100％，即不是全上行(AllUplink)配置，则终端可以确定该上下行配置相对于全上行配置能够减少的功率降幅。全上行配置时的功率降幅可以参考图2所示的现有方式来确定。最后，终端可以利用减少后的功率降幅来降低上行传输功率。这样，相比现有技术，本申请提供的传输功率控制方法可以抬升传输功率，可实现终端在上行传输时获得更多的功率余量，提升传输性能，同时又能符合SAR规范。结合第一方面或第二方面，在一些实施例中，终端可以通过距离传感器检测终端与人体之间的距离，也可以通过雷达测距传感器或红外线测距传感器等检测终端与人体之间的距离。可选的，终端还可以根据使用场景(use case)来确定终端与人体之间的距离。例如，当判断出用户在打电话时，此时终端的听筒开启，则终端可以确定用户与终端之间的距离在特定距离范围内，如0.1mm至1.0mm。不限于该示例，终端还可以根据其他使用场景确定用户与终端之间的距离，本申请对此不作限制。
结合第一方面或第二方面，在一些实施例中，终端可以根据第一距离从第一映射表中查找出该距离对应的功率降幅。这样，可确保遵守电磁能量吸收规范，即使在终端进行连续上行传输这种极端场景下。也即是说，在这种极端场景下测试确定的功率降幅是最大功率降幅，因为它能确保其他场景下也能遵守电磁能量吸收规范。
结合第一方面或第二方面，在一些实施例中，终端可以根据第一上行时间占比，从第二映射表中查找出第一上行时间占比对应的功率增幅(即少降的功率，delta 2)。
结合第一方面或第二方面，在一些实施例中，第一信息可以携带于系统消息(如SIB 1)中，还可以携带于高层消息(如RRC消息中)，也还可以携带于PDCCH(如DCI消息) 中。
结合第一方面或第二方面，在一些实施例中，当第一上下行配置采用小区级半静态UL/DL配置时，第一信息可以携带于系统消息中。在LTE通信系统中，第一信息可以是SIB1中的TDD-Config IE。在NR通信系统中，第一信息可以是SIB 1中的UL-DL-configuration-common IE，和/或UL-DL-configuration-common-Set2IE。
结合第一方面或第二方面，在一些实施例中，当第一上下行配置采用用户级半静态UL/DL配置时，第一信息可以携带于高层消息中。第一信息可以是RRC消息中的ServingCellConfig IE。
结合第一方面或第二方面，在一些实施例中，当第一上下行配置采用动态UL/DL配置时，第一信息可以携带于DCI消息中。第一信息可以是RRC消息中的ServingCellConfig IE。
结合第一方面或第二方面，在一些实施例中，对于特定终端，上行传输具体占用的上行时间资源需要网络设备下发上行授权(UL grant)来进一步指示。在接收第一信息之前，终端还可以接收网络设备发送的UL grant，UL grant可携带于DCI消息中，并可以在第一上下行配置指示的上行时间资源中根据UL grant进一步确定上行数据承载于哪一部分上行时间资源。
结合第一方面或第二方面，在一些实施例中，，终端还可以向网络设备发送能力上报消息，如用户设备能力(user equipment capability，UE capability)，该能力上报消息可以携带第二信息(如maxUplinkDutyCycle-PC2-FR1IE)。第二信息可指示终端能够被调度的上行时间在SAR评估周期(如6分钟)内的最大比例。网络设备在为终端调度的上行时间资源时，需要考虑终端上报的该最大比例。该最大比例越大，网络设备为终端调度的上行时间资源，即UL grant配置的上行时间资源，在第一上下行配置指示的上行时间资源中所占比例越大。
结合第一方面或第二方面，在一些实施例中，终端上报的该最大比例可以大于第一值(如90％)，例如最大比例可以设置为100％。这样，网络设备通过UL grant配置给终端的上行时间资源，在第一上下行配置指示的上行时间资源内，所占的比例能够超出第二值(如100％)。也即是说，如果终端能力上报中的该最大比例很大，如100％，那么，网络设备下发的UL grant配置的上行时间资源在第一上下行配比指示的上行时间资源内的占比就可以很高，如100％，有利于终端被配置更多上行时间资源，有利于终端上行传输更多数据。
在一种可能的情况下，如果处于RRC空闲态的终端没有接收到来自网络设备的第一信息，则可以根据极限上行时间占比，如20％，确定实际功率降幅，从而确定出上行传输的实际传输功率。
第三方面，本申请提供了一种终端，包括多个功能单元，用于相应的执行第一方面可能的实施方式中的任意一种所提供的方法。
第四方面，本申请提供了一种网络设备，包括多个功能单元，用于相应的执行第二方面可能的实施方式中的任意一种所提供的方法。
第五方面，本申请提供了一种终端，用于执行第一方面可能的实施方式中的任意一种所描述的传输功率控制方法。终端可包括：存储器以及与存储器耦合的处理器、收发器，其中：收发器用于与其他通信设备(如网络设备)通信。存储器用于存储第一方面可能的实施方式中的任意一种所描述的传输功率控制方法的实现代码，处理器用于执行存储器中 存储的程序代码，即执行第一方面可能的实施方式中的任意一种所提供的方法。
第六方面，本申请提供了一种接入网设备，用于执行第二方面或第四方面可能的实施方式中的任意一种所描述的传输功率控制方法。网络设备可包括：存储器以及与存储器耦合的处理器、收发器，其中：收发器用于与其他通信设备(如终端)通信。存储器用于存储第二方面可能的实施方式中的任意一种所描述的传输功率控制方法的实现代码，处理器用于执行存储器中存储的程序代码，即执行第二方面可能的实施方式中的任意一种所提供的方法。
第七方面，本申请提供了一种通信系统，通信系统包括：终端和网络设备，其中：终端可以是第三方面或第五方面中描述的终端。网络设备可以是第四方面或第六方面中描述的网络设备。
第八方面，本申请提供了一种计算机可读存储介质，可读存储介质上存储有指令，当其在计算机上运行时，使得计算机执行上述第一方面描述的传输功率控制方法。
第九方面，本申请提供了另一种计算机可读存储介质，可读存储介质上存储有指令，当其在计算机上运行时，使得计算机执行上述第二方面描述的传输功率控制方法。
第十方面，本申请提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第一方面描述的传输功率控制方法。
第十一方面，本申请提供了另一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述第二方面描述的传输功率控制方法。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1是本申请提供的一种无线通信系统的架构示意图；
图2是现有技术的降功率方法的流程；
图3是LTE无线帧的7种上下行配置的示意图；
图4是一种NR无线帧结构的示意图；
图5是本申请提供的传输功率控制方法的流程示意图；
图6是本申请提供的传输功率控制方法应用于的消息流程示意图；
图7是一种非独立(non-standalone)组网架构示意图；
图8是本申请的一个实施例提供的终端设备的硬件架构示意图；
图9是本申请的一个实施例提供的网络设备的硬件架构示意图；
图10是本申请的提供的无线通信系统，终端和网络设备的功能框图；
图11是本申请的一种处理器的结构示意图。
具体实施方式
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释，而非旨在限定本申请。
图1示出了本申请涉及的无线通信系统100。无线通信系统100可以工作在高频频段上，可以是第五代移动通信(the 5th Generation，5G)系统、新空口(new radio，NR)系统，还可 以是长期演进(Long Term Evolution，LTE)系统，机器与机器通信(Machine to Machine，M2M)系统，未来演进的第六代通信系统等。如图1所示，无线通信系统100可包括：一个或多个网络设备101，一个或多个终端103，以及核心网115。其中：
网络设备101可以为基站，基站可以用于与一个或多个终端进行通信，也可以用于与一个或多个具有部分终端功能的基站进行通信(比如宏基站与微基站，如接入点，之间的通信)。基站可以是时分同步码分多址(Time Division Synchronous Code Division Multiple Access，TD-SCDMA)系统中的基站收发台(Base Transceiver Station，BTS)，也可以是LTE系统中的演进型基站(Evolutional Node B，eNB)，以及5G系统、新空口(NR)系统中的基站。另外，基站也可以为接入点(Access Point，AP)、传输节点(Trans TRP)、中心单元(Central Unit，CU)或其他网络实体，并且可以包括以上网络实体的功能中的一些或所有功能。
终端103可以分布在整个无线通信系统100中，可以是静止的，也可以是移动的。在本申请的一些实施例中，终端103可以是用户设备UE、移动设备、移动台(mobile station)、移动单元(mobile unit)、M2M终端、无线单元，远程单元、用户代理、移动客户端等等。
具体的，网络设备101可用于在网络设备控制器(未示出)的控制下，通过无线接口105与终端103通信。在一些实施例中，所述网络设备控制器可以是核心网115的一部分，也可以集成到网络设备101中。具体的，网络设备101可用于通过回程(blackhaul)接口113(如S1接口)向核心网115传输控制信息或者用户数据。具体的，网络设备101与网络设备101之间也可以通过回程(blackhaul)接口111(如X2接口)，直接地或者间接地，相互通信。
需要说明的，图1示出的无线通信系统100仅仅是为了更加清楚的说明本申请的技术方案，并不构成对本申请的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请提供的技术方案对于类似的技术问题，同样适用。
在无线通信系统100中，当终端103向网络设备101传输数据时，终端103产生的电磁辐射会对靠近终端103的人体组织产生影响。针对该影响，一些规范组织设立了SAR限制值。
现有技术中，采取降低终端的传输功率的方式来遵守SAR限制值。现有的降低传输功率的具体过程可如图2所示：
步骤1.在连续上行传输场景下，以6分钟为SAR评估周期，测试不同距离对应的符合SAR规范的最大传输功率。当人体和终端103处于某个距离(例如1毫米)的条件下，终端采用该距离下测试得到的符合SAR规范的最大传输功率进行连续上行传输，6分钟内被人体吸收的电磁能量刚好符合SAR规范，例如接近或等于FCC规定的1.6W/Kg。这里，接近是指6分钟内被人体吸收的电磁能量与1.6W/Kg之间的差值小于特定值，例如0.1W/Kg。
然后，确定不同距离下测试得到的符合SAR规范的最大传输功率相比于终端的最大传输功率所需要的功率降幅，并得到一个映射表。该映射表中记录了不同距离对应的功率降幅。
步骤2.终端103检测和人体之间的距离。例如，终端103可以距离传感器检测该距离。
步骤3.根据步骤2中测量到的距离，从步骤1中得到的映射表中，查找出该距离对应的功率降幅。
步骤4.利用步骤3中的查找到的功率降幅，基于终端的最大传输功率，降低传输功率。
LTE、NR都支持多种上下行配置，可以根据不同的业务类型，调整上下行配置，以灵活适应不同的业务场景，满足上下行非对称的业务需求。在极端的业务场景(例如终端作为广播热点或传输热点)下，配置周期(如1/4个无线帧)中的子帧(或时隙或符号)可能全部分配给上行传输，这种极端的上下行配置可以称为全上行(AllUplink)配置。全上行配置是指，整个配置周期都为上行时间，即上行时间在配置周期内的占比为100％，可以支持连续上行传输，适应连续上传数据的业务场景。后续内容中，上行时间在配置周期内的占比可以称为上行时间占比。
现有技术中，为了确保各种业务场景下都能遵守SAR限制值，功率降幅是在上述极端的上下行配置下确定的，功率降幅较大。这样可以确保所有业务场景都可以使用现有技术确定的功率降幅来遵守SAR限制值。因为，在SAR评估周期(如6分钟)内，连续上行传输比非连续上行传输会产生更多电磁辐射，需要降低的功率也就更多。
但是，针对很多业务场景，例如处于无线资源控制(radio resource control，RRC)空闲态的终端103进行随机接入的业务场景，其上下行配置所配置的上行时间在配置周期内的占比可能只会为20％左右。因此，在全上行(AllUplink)配置下确定的功率降幅，会导致上行传输功率被过多的降低，不利于终端传输性能的发挥。
为了解决现有的技术问题，本申请提供了一种传输功率控制方法。
本申请的主要发明原理可包括：终端可以从网络侧获得上下行配置(UL/DL assignment)。如果该上下行配置所配置的上行时间占比不是100％，即不是全上行(AllUplink)配置，则终端可以确定该上下行配置相对于全上行配置能够减少的功率降幅。全上行配置时的功率降幅可以参考图2所示的现有方式来确定。最后，终端可以利用减少后的功率降幅来降低上行传输功率。这样，相比现有技术，本申请提供的传输功率控制方法可以抬升传输功率，可实现终端在上行传输时获得更多的功率余量，提升传输性能，同时又能符合SAR规范。
首先，介绍本申请中提及的上下行配置(UL/DL assignment)。
为了适应不同的业务需求，网络设备可以调整上下行配置，改变上行和下行时间资源比例。上下行配置，是指一段时间内上行时间资源和下行时间资源的分配。上下行配置可以是周期性配置的。在一个无线帧内，上行数据和下行数据可以在不同时间(如子帧、时隙、符号等)上传输。也即是说，在一个无线帧内，一些时间用于网络设备(如eNB)发信息、终端接收信息，另一些时间用于终端发信息、网络设备接收信息。
(1)在LTE通信系统中，上下行配置可以子帧或时隙为单位。图3示例性示出了LTE无线帧的7种上下行配置(Uplink-downlink configuration)。LTE中，无线帧的长度为10毫秒，分成10个长度为1毫秒的子帧。其中，子帧0、子帧5是下行(D)子帧，子帧1是特殊(S)子帧，特殊子帧后传输的是上行(U)子帧。
如图3所示，采用上下行配置0、2或6时，上下行配置的配置周期为5毫秒。采用上下行配置3、4或5时，上下行配置的配置周期为10毫秒。上下行配置可以子帧为单位进行指示。例如，上下行配置0为：第1个子帧是DL子帧，第3个至第5个子帧是UL子帧，第4个子帧是特殊子帧。上下行配置是可以调整的，可以通过修改特殊子帧中的各部分的长度来实现。
其中，特殊子帧包含三个部分：DwPTS(downlink pilot time slot)，GP(guard period)， UpPTS(uplink pilot time slot)。DwPTS传输的是下行的参考信号，也可以传输一些控制信息。UpPTS上可以传输一些短的随机接入信道(random access channel，RACH)和探测参考信号(sounding reference signal，SRS)的信息。GP是上下行之间的保护时间。LTE规定了9种特殊子帧配置。采用不同的特殊子帧配置，特殊子帧中各个部分的长度可以是不同的。具体的，网络设备可以通过高层消息(如RRC消息)配置特殊子帧采用哪一种特殊子帧配置。
(2)在NR通信系统中，上下行配置可以时隙或符号为单位，又可以称为时隙格式配置。图4示例性示出了NR中的一种无线帧结构。如图4所示，上下行配置的配置周期为2.5ms，子载波间隔为30KHz。在一个配置周期内，下行(DL)时隙的个数为3，上行(UL)时隙的个数为1，特殊(S)时隙的个数为1。在特殊时隙内，下行(DL)符号的个数为8，上行(UL)符号的个数为2，上行符号和下行符号之间的符号称为弹性(flexible)符号。弹性符号可用作上下行切换的保护时间(GP)，也可以被其他方式配置为DL符号或者UL符号。
图4示例性所示的帧结构表示的上下行配置为：时隙#0至时隙#2为DL时隙，时隙#4为UL时隙，时隙#3为特殊时隙。该上下行配置是可以调整的，可以通过修改特殊子帧中的弹性符号的传输方向来实现。
不限于图4，NR的上下行配置可以非常灵活，例如全上行(AllUplink)配置。全上行配置是指，整个配置周期都为上行时间，即上行时间在配置周期内的占比为100％，可以支持连续上行传输，适应连续上传数据的业务场景。后续内容中，上行时间在配置周期内容的占比可以称为上行时间占比。
其次，介绍本申请中关于上下行配置的几种配置方式。
(1)小区级半静态UL/DL配置
网络设备可以通过系统消息，如系统信息块(system information block，SIB)，下发上下行配置。终端在小区搜索过程中可以接收到网络设备发送的系统消息。
在LTE通信系统中，上下行配置可由SIB 1中的TDD-Config IE来指示。在TDD-Config IE中，subframeAssignment信元可指示一个配置周期采取图3所示的7种上下行配置中的哪一种，specialSubframePattern信元可指示特殊子帧采取哪一种特殊子帧配置。根据这两个信元，终端便可以确定出网络设备下发的上下行配置。
在NR通信系统中，上下行配置可由SIB 1中的下述两种信息元素(information element，IE)来指示：UL-DL-configuration-common、UL-DL-configuration-common-Set2。具体的，在这两个IE中，nrofDownlinkSlots信元可指示一个配置周期内DL时隙的个数，nrofDownlinkSymbols信元可指示特殊时隙内DL符号的个数，nrofUplinkSlots信元可指示一个配置周期内UL时隙的个数，nrofUplinkSymbols信元可指示特殊时隙内UL符号的个数。根据这些信元，终端便可以确定出网络设备下发的上下行配置。
(2)用户级半静态UL/DL配置
用户级半静态UL/DL配置可用于修改小区级半静态UL/DL配置中弹性符号的传输方向。用户级半静态UL/DL配置可以由RRC消息中的ServingCellConfig IE来实现。在ServingCellConfig IE中，tdd-UL-DL-ConfigurationDedicated信元可具体指示哪些时隙、哪些符号要修改传输方向。
(3)动态UL/DL配置方式
动态UL/DL配置可用于修改小区级半静态UL/DL配置或用户级半静态UL/DL配置中弹性符号的传输方向。动态UL/DL配置可由DCI消息来实现。具体的，网络设备可以使用DCI格式2_0动态配置时隙格式，对弹性符号的传输方向进行配置修改。
上述用户级半静态UL/DL配置方式、动态UL/DL配置方式可应用于NR通信系统中。LTE帧结构中没有弹性符号，上下行配置通过小区级半静态UL/DL配置实现。
上述几种配置方式适用于时分双工(time division duplex，TDD)通信系统。在频分双工(frequency division duplex，FDD)通信系统中，可以通过配置时分复用(time division mutiplexing，TDM)样式(pattern)来指示上行时间资源、下行时间资源的分配。第一信息可以是携带在RRCConnectionReconfiguration消息中的tdm-patternConfig IE。FDD通信系统下配置TDM的场景有两种：1.非独立(non-standalone)组网场景；2.载波聚合(carrier aggregation，CA)场景。这两种场景下均存在互扰，场景1中LTE的二次谐波对NR频段产生干扰，场景2中一个载波的多次谐波会对另一个载波产生干扰。另外，非独立组网时，针对基站远点功控场景，终端向NR基站、LTE基站分时进行上行传输，单模时可用满全部发射功率，也会配置TDM-Pattern提升覆盖。单模是指终端只向单个基站(NR基站或LTE基站)进行上行传输的上行模式。
后续实施例中会详细介绍上述几种配置方式的应用，这里现在不赘述。
下面，基于上述主要发明原理说明本申请提供的传输功率控制方法的总体流程。
如图5所示，在本申请提供的传输功率控制方法中，终端可以访问并查询第一映射表和第二映射表。其中，第一映射表中可包括多个候选距离以及这多个候选距离对应的功率降幅(简称delta 1)。第一映射表可以根据图2所示的现有技术中的步骤1得到。第二映射表可包括多个候选上行时间占比以及这多个候选上行时间占比对应的功率增幅(简称delta2)。一个上行时间占比对应的功率增幅表示该上行时间占比相比全上行配置少降的功率。在SAR评估周期(如6分钟)内，非连续上行传输(上行时间占比小于100％)比连续上行传输(全上行配置，上行时间占比为100％)产生更少的电磁辐射，需要降低的功率也就更少。第二映射表中的delta 2可以是经验值，比如50％上行占比相较于100％上行占比，传输功率可以少降3dB；delta 2也可以通过实际测试得到。
图5中示出的第一映射表、第二映射表的内容仅作示例，不应构成限定。第一映射表和第二映射表可以存储于终端，也可以存储在终端可以访问的云端服务器/存储设备，这里不作限制。
如图5所示，本申请提供的传输功率方法可包括：
S101，终端确定终端与人体之间的距离。
具体的，终端可以通过距离传感器检测终端与人体之间的距离，也可以通过雷达测距传感器或红外线测距传感器等检测终端与人体之间的距离。可选的，终端还可以根据使用场景(use case)来确定终端与人体之间的距离。例如，当判断出用户在打电话时，此时终端的听筒开启，则终端可以确定用户与终端之间的距离在特定距离范围内，如0.1mm至1.0mm。不限于该示例，终端还可以根据其他使用场景确定用户与终端之间的距离，本申请对此不作限制。
S102，终端可以根据S101中确定的距离从第一映射表中查找出该距离对应的功率降幅。
例如，如果S101中确定的距离是1mm，则1mm对应的功率降幅就是5dB。这表示，当人体与终端相距1mm时，将传输功率从终端最大发射功率降低5dB，可确保遵守电磁能量吸收规范，即使在终端进行连续上行传输这种极端场景下。也即是说，在这种极端场景下测试确定的功率降幅是最大功率降幅，因为它能确保其他场景下也能遵守电磁能量吸收规范。
S103，终端可以接收网络设备发送的第一信息，第一信息可指示第一上下行配置。
第一信息可以携带于系统消息(如SIB 1)中，还可以携带于高层消息(如RRC消息中)，也还可以携带于PDCCH(如DCI消息)中。
具体的，当第一上下行配置采用小区级半静态UL/DL配置时，第一信息可以携带于系统消息中。在LTE通信系统中，第一信息可以是SIB 1中的TDD-Config IE。在NR通信系统中，第一信息可以是SIB 1中的UL-DL-configuration-common IE，和/或UL-DL-configuration-common-Set2IE。当第一上下行配置采用用户级半静态UL/DL配置时，第一信息可以携带于高层消息中。第一信息可以是RRC消息中的ServingCellConfig IE。当第一上下行配置采用动态UL/DL配置时，第一信息可以携带于DCI消息中。第一信息可以是RRC消息中的ServingCellConfig IE。
第一上下行配置可指示一段时间内上行时间资源和下行时间资源的分配。例如配置周期内的哪些子帧是UL子帧，哪些子帧是DL子帧。关于上下行配置，可以参考前述内容，这里不再赘述。
S104，终端可以根据第一上下行配置确定第一上行时间占比。
第一上行时间占比是指，第一上下行配置指示的上行时间(例如UL子帧的时长)在配置周期内所占的比例。例如，假设第一上下行配置是图3中示出的上下行配置0。那么，由于上下行配置0为：第1个子帧是DL子帧，第3个至第5个子帧是UL子帧，第4个子帧是特殊子帧，因此，第一上行时间占比为：3/5。其中，3代表3个UL子帧(第3个至第5个子帧)，5代表整个配置周期内的子帧数。
S105，终端可以根据第一上行时间占比，从第二映射表中查找出第一上行时间占比对应的功率增幅(即少降的功率，delta 2)。
例如，如果S104中确定的第一上行时间占比是50％，则50％对应的功率增幅就是3dB。这表示，上行时间占比是50％时遵守电磁能量吸收规范的最大传输功率相比于上行时间占比是100％时遵守电磁能量吸收规范的最大传输功率，要大，具体大3dB。因为，在SAR评估周期(如6分钟)内，上行时间占比为50％的非连续上行传输比上行时间占比为100％的连续上行传输产生更少的电磁辐射，需要降低的功率也就更少。
可以理解的是，功率增幅(即少降的功率，delta 2)最多等于S102中查找出的功率降幅，不会超过该功率降幅。
S106，终端可以根据S102中查找出的功率降幅和S105中查找出的少降的功率(功率增幅)，确定实际功率降幅(可简称为delta 3)。
具体的，实际功率降幅可以等于S102中查找出的功率降幅减去S105中查找出的少降的功率(功率增幅)。也即是说，实际功率降幅(delta 3)可以由S102中查找出的功率降幅(delta 1)和S105中查找出的功率增幅(delta 2)确定。如果第一上行时间占比小于100％， 则实际功率降幅小于S102中查找出的功率降幅。这样，可实现在符合SAR规范同时，尽量少的降低传输功率，获得更多的功率余量，提升传输性能，同时又能符合SAR规范。
不限于实际功率降幅(delta 3)＝S102中查找出的功率降幅(delta 1)－S105中查找出的功率增幅(delta 2)，它们三者的关系可概括为：delta 3＝f(delta 1，delta 2)，其中，f是以delta 1、delta 2为参数的函数，delta 3和delta 1正相关，delta 3和delta 2负相关。
S107，终端可以根据S106中确定的实际功率降幅(delta 3)，确定实际传输功率。实际传输功率相对于终端的最大传输功率的功率降幅即实际功率降幅(delta 3)。
S108，终端可以在第一上下行配置指示的部分或全部上行时间资源上进行上行传输，该上行传输的传输功率为S107中确定的实际传输功率。
第一上下行配置指示的上行时间资源是针对整个小区的。终端可能在该上行时间资源的部分或全部上进行上行传输。对于特定终端，上行传输具体占用的上行时间资源需要网络设备下发上行授权(UL grant)来进一步指示。图5未示出的，在S108之前，终端还可以接收网络设备发送的UL grant，UL grant可携带于DCI消息中，并可以在第一上下行配置指示的上行时间资源中根据UL grant进一步确定上行数据承载于哪一部分上行时间资源。
图5未示出的，终端还可以向网络设备发送能力上报消息，如用户设备能力(user equipment capability，UE capability)，该能力上报消息可以携带第二信息(如maxUplinkDutyCycle-PC2-FR1IE)。第二信息可指示终端能够被调度的上行时间在SAR评估周期(如6分钟)内的最大比例。网络设备在为终端调度的上行时间资源时，需要考虑终端上报的该最大比例。该最大比例越大，网络设备为终端调度的上行时间资源，即UL grant配置的上行时间资源，在第一上下行配置指示的上行时间资源中所占比例越大。
本申请中，终端上报的该最大比例可以大于第一值(如90％)，例如最大比例可以设置为100％。这样，网络设备通过UL grant配置给终端的上行时间资源，在第一上下行配置指示的上行时间资源内，所占的比例能够超出第二值(如100％)。也即是说，如果终端能力上报中的该最大比例很大，如100％，那么，网络设备下发的UL grant配置的上行时间资源在第一上下行配比指示的上行时间资源内的占比就可以很高，如100％，有利于终端被配置更多上行时间资源，有利于终端上行传输更多数据。
在一种可能的情况下，如果处于RRC空闲态的终端没有接收到来自网络设备的第一信息，则可以根据极限上行时间占比，如20％，确定实际功率降幅，从而确定出上行传输的实际传输功率。
可以看出，图5所示的传输功率控制方法中，终端可以根据网络侧下发的上下行配置(第一上下行配置)确定实际功率降幅，可实现在符合SAR规范同时，尽量少的降低传输功率，获得更多的功率余量，提升传输性能。
本申请中，生成第一映射表所基于的上下行配置可以称为第二上下行配置。第二上下行配置指示的上行时间占比可以称为第二上行时间占比。第二上下行配置可以为全上行配置，此时第二上行时间占比为100％。不限于全上行配置这种极端上行配置，第二上行配置还可以是其他上行时间占比很高的上下行配置，例如上行时间占比为95％。
本申请中，S102中查找出的功率降幅可以称为第一功率降幅，S105中查找出的少降的功率(功率增幅)可以称为第一功率增幅。第一功率降幅可用于在第二上下行配置下将实际传输功率从终端的最大传输功率降低至符合电磁能量吸收规范的最大传输功率。具体的， 在特定距离(如1mm)下，第一功率降幅可以等于终端的最大传输功率和第一测量功率的差值，第一测量功率为终端与人体相距该特定距离时进行连续上行传输测量到的符合电磁能量吸收规范的最大的传输功率。第一功率增幅等于第一上下行配置下符合电磁能量吸收规范的最大传输功率，与，第二上下行配置下符合电磁能量吸收规范的最大传输功率，的差值。即第一功率增幅为少降的功率。第一功率增幅也可以称为，第一上下行配置下符合电磁能量吸收规范的最大传输功率，相对于，第二上下行配置下符合电磁能量吸收规范的最大传输功率，所能够提高的功率。
本申请中，当第一上行时间占比小于第二上行时间占比时，实际功率降幅小于第一功率降幅。而对于大部分业务场景，其上下行配置指示的上行时间占比，都会小于第二上行时间占比(如100％)。实际功率降幅的减少，可获得更多的功率余量，提升传输性能，同时符合SAR规范。
不限于SAR规范，本申请提供的传输功率控制方法所考虑的电磁能量吸收规范还可以是针对毫米波(mmWave)通信的最大允许暴露(maximum permissible exposure，MPE)规范。
图6示出了终端在开机后涉及的主要消息流程，下面结合该流程说明本申请提供的传输功率控制方法的应用。下面展开：
阶段1：小区搜索(S201)
终端开机时需要搜索小区、取得同步。在小区搜索过程中，终端接收网络设备发送的下行同步信号：主同步信号(primary synchronization signal，PSS)和辅同步信号(secondary synchronization signal，SSS)。
阶段2：获取小区系统信息(system information)(S202)
小区搜索过程之后，终端需要获取到小区的系统信息，这样才能知道该小区是如何配置的，以便接入该小区并在该小区内正确地工作。系统信息是小区级别的信息，即对接入该小区的所有UE生效。系统信息可分为主信息块(master information block，MIB)和多个系统信息块(system information block，SIB)。
网络设备可以在系统信息，如SIB 1，中携带第一上下行配置的指示信息，即第一信息。通过系统信息(如SIB 1)下发第一上下行配置的方式即前述小区级半静态UL/DL配置方式。关于如何通过SIB 1下发第一上下行配置，具体可参考前述小区级半静态UL/DL配置部分，这里不再赘述。
这样，在后续上行传输时，终端可以根据SIB 1中携带的第一信息，确定第一上下行配置，最终确定出实际传输功率。关于如何确定实际传输功率，可以参考图5方法，这里不再赘述。后续上行传输可发生在以下几种场景下：场景1.处于RRC空闲态的终端进行随机接入的场景；场景2.处于RRC连接态的终端传输上行数据的场景。
阶段3：随机接入(S205-S213)
在小区搜索过程之后，终端已经与小区取得了下行同步，因此终端能够接收下行数据。但终端只有与小区取得上行同步，才能进行上行传输。终端通过随机接入过程与小区建立连接并取得上行同步。
随机接入过程可包括以下几个步骤：
S205，终端向网络设备发送随机接入前导码(preamble)，发起随机接入请求。
S207，网络设备检测到preamble之后，向终端返回随机接入响应(random access response)。
S209，终端在接收到随机接入响应后，向网络设备发送Msg3。
针对不同场景，Msg3包含不同的内容。在初始接入场景下，Msg3可携带RRC连接请求(RRC Connection Request)。在RRC连接重建场景下，Msg3可携带RRC连接重建请求(RRCConnectionReestablishmentRequest)。在小区切换场景下，Msg3可携带RRC切换完成消息。图6示出的是初始接入场景，Msg3中携带RRC Connection Request。
S211，网络设备在接收到RRC Connection Request后，返回RRC连接建立(RRC Connection Setup)消息。
S213，终端在接收到RRC Connection Setup后，向网络设备发送RRC Connection Setup Complete。至此，RRC连接建立完成，终端从RRC空闲态进入RRC连接态。
在随机接入过程中，S205、S209为上行传输，其实际传输功率可以通过本申请提供的功率传输控制方法确定，具体可参考图5方法实施例，这里不再赘述。确定实际传输功率所依据的第一上下行配置的指示信息(即第一信息)可携带在系统信息(如SIB 1)中。
阶段4：RRC连接重配置
RRC连接重配置的目的是修改RRC连接，例如建立、修改或释放无线承载，建立、修改或释放测量。
RRC连接重配置可包括以下几个步骤：
S215，网络设备向终端发送RRC连接重配置(RRCConnectionReconfiguration)消息。
S217，终端在接收到RRCConnectionReconfiguration之后，向网络设备发送RRCConnectionReconfigurationComplete消息，确认重配置完成。
网络设备可以在RRCConnectionReconfiguration消息中携带第一上下行配置的指示信息，即第一信息。通过RRCConnectionReconfiguration消息下发第一上下行配置的方式可以是前述用户级半静态UL/DL配置方式。也即是说，RRCConnectionReconfiguration消息中携带的第一信息可用于修改SIB 1已下发的第一上下行配置。不限于RRCConnectionReconfiguration，网络设备下发的其他RRC消息也可以下发第一上下行配置。关于如何通过RRC消息下发第一上下行配置，具体可参考前述用户级半静态UL/DL配置部分，这里不再赘述。
这样，在后续上行传输时，基于SIB 1已下发的第一上下行配置，终端可以根据RRCConnectionReconfiguration消息中携带的第一信息，进一步确定修改后的第一上下行配置。后续上行传输的实际传输功率依据修改后的第一上下行配置确定。后续上行传输可以发生在以下场景：处于RRC连接态的终端传输上行数据的场景。
阶段5：上行调度(S219-S223)
S219，终端发送SRS。与下行类似，网络设备在进行上行调度时，需要进行上行信道估计。这是通过对终端发送的SRS进行测量得到的。
S221，当有上行数据需要传输时，终端向网络设备发送调度请求(scheduling request，SR)，告诉网络设备有数据要发送，并请求网络设备分配上行资源。上行资源包括上行时间资源和上行频域资源。
S223，网络设备向终端下发UL grant，UL grant可携带在DCI消息中。UL grant可指示 网络设备分配给终端的上行资源。具体的，UL grant指示的分配给终端的上行时间资源，在第一上下行配置所指示的时间资源内的占比小于或等于100％。
网络设备可以在DCI消息中携带第一上下行配置的指示信息，即第一信息。通过DCI消息下发第一上下行配置的方式可以是前述动态UL/DL配置方式。也即是说，DCI消息中携带的第一信息可用于修改SIB 1已下发的第一上下行配置，或修改RRC消息已修改的第一上下行配置。不限于DCI消息，网络设备下发的其他物理下行控制信道(physical downlink control channel，PDCCH)消息也可以下发第一上下行配置。关于如何通过DCI消息下发第一上下行配置，具体可参考前述动态UL/DL配置部分，这里不再赘述。
这样，在后续上行传输时，基于SIB 1已下发的第一上下行配置或RRC消息已修改的第一上下行配置，终端可以根据DCI消息中携带的第一信息，进一步确定修改后的第一上下行配置。后续上行传输的实际传输功率依据进一步修改后的第一上下行配置确定。后续上行传输可以发生在以下场景：处于RRC连接态的终端传输上行数据的场景。
阶段6：上行数据传输(S225)
S225，在获得UL grant之后，终端在网络设备分配给终端的上行资源上传输上行数据。
在上行数据传输过程中，其实际传输功率可以通过本申请提供的功率传输控制方法确定，具体可参考图5方法实施例，这里不再赘述。
确定实际传输功率所依据的第一上下行配置，可通过下述几种方式确定：
方式1.根据系统信息(如SIB 1)中携带的第一信息确定第一上下行配置。
方式2.根据RRC消息(如RRCConnectionReconfiguration)中携带的第一信息，修改系统信息(如SIB 1)已下发的第一上下行配置。
方式3.根据DCI消息中携带的第一信息，修改系统信息(如SIB 1)已下发的第一上下行配置，或者进一步修改RRC消息修改过的第一上下行配置。
也即是说，第一上下行配置可以通过小区级半静态UL/DL配置、用户级半静态UL/DL配置、动态UL/DL配置，进行递进式配置。
另外，在FDD通信系统中，可以通过TDM pattern来指示上行时间资源、下行时间资源的分配。第一信息即携带在RRCConnectionReconfiguration消息中的tdm-patternConfig IE。
举例说明，如图6所示，假设SIB 1中携带的第一信息指示的第一上行配置如图6中上下行配置220所示，具体为：时隙#0至时隙#2为DL时隙，时隙#4为UL时隙，时隙#3为特殊时隙。该上下行配置是可以调整的，可以通过修改特殊子帧中的弹性符号的传输方向来实现。在特殊时隙内，下行(DL)符号的个数为8，上行(UL)符号的个数为2，上行符号和下行符号之间的符号称为弹性(flexible)符号。其中，弹性符号可用作上下行切换的保护时间(GP)，也可以被其他方式(如用户级半静态UL/DL配置、动态UL/DL配置)配置为DL符号或者UL符号。
进一步的，S215中传输的RRCConnectionReconfiguration消息中携带的第一信息可修改上下行配置220中的弹性符号的传输方向。例如，将DL符号和UL符合之间的第1个弹性符号修改为UL符号。
进一步的，基于RRCConnectionReconfiguration消息修改过的第一上下行配置，S223中传输的DCI消息中携带的第一信息可进一步修改上下行配置220中的弹性符号的传输方向。例如，将DL符号和UL符合之间的第2个弹性符号修改为UL符号。可选的，DCI消 息中携带的第一信息可修改SIB 1下发的第一上下行配置，尤其当RRC消息没有对第一上下行配置进行修改的情况下。
本申请提供的传输功率控制方法还可以应用于非独立(non-standalone)组网架构。
在图7示例性所示的非独立(non-standalone)组网架构中，终端103可以连接到两个网络设备，例如网络设备101-A(LTE eNB)和网络设备101-B(NR gNB)。其中，网络设备101-A(LTE eNB)连接LTE核心网(演进分组核心网(evolved packet core，EPC))113-A，网络设备101-B(NR gNB)连接NR核心网(下一代核心网(next generation core，NGC))113-B。网络设备101-A(LTE eNB)为主网络设备，网络设备101-B(NR gNB)为辅网络设备。
在这种图7所示的组网架构下，终端可以接收到网络设备101-A(LTE eNB)和网络设备101-B(NR gNB)分别下发的两套第一上下行配置，可分别简称为：配置A、配置B。配置A可以通过小区级半静态UL/DL配置、用户级半静态UL/DL配置、动态UL/DL配置，进行递进式配置。配置B可以通过用户级半静态UL/DL配置、动态UL/DL配置，进行递进式配置。配置B不能通过SIB 1消息下发，因为终端不能接收到辅网络设备下发的SIB 1。
终端可以根据配置A确定向网络设备101-A进行上行传输时的实际功率降幅，从而确定向网络设备101-A进行上行传输的实际传输功率。终端可以根据配置B确定向网络设备101-B进行上行传输时的实际功率降幅，从而确定向网络设备101-B进行上行传输的实际传输功率。这两种上行传输的实际传输功率均可以通过本申请提供的功率传输控制方法确定，具体可参考图5方法实施例，这里不再赘述。
这样，在非独立(non-standalone)组网架构中，在向不同的网络设备进行上行传输时，终端都可以相应的上下行配置分别确定实际功率降幅，获得更多的功率余量，提升传输性能，同时又能符合SAR规范。
参考图8，图8示出了本申请的一些实施例提供的终端300。如图8所示，终端300可包括：输入输出模块(包括音频输入输出模块318、按键输入模块316以及显示器320等)、用户接口302、一个或多个终端处理器304、发射器306、接收器308、耦合器310、天线314以及存储器312。这些部件可通过总线或者其他方式连接，图8以通过总线连接为例。其中：
通信接口301可用于终端300与其他通信设备，例如基站，进行通信。具体的，所述基站可以是图9所示的网络设备400。通信接口301是指终端处理器304与收发系统(由发射器306和接收器308构成)之间的接口，例如LTE中的X1接口。具体实现中，通信接口301可包括：全球移动通信系统(Global System for Mobile Communication，GSM)(2G)通信接口、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)(3G)通信接口，以及长期演进(Long Term Evolution，LTE)(4G)通信接口等等中的一种或几种，也可以是4.5G、5G或者未来新空口的通信接口。不限于无线通信接口，终端300还可以配置有有线的通信接口301，例如局域接入网(Local Access Network，LAN)接口。非独立(non-standalone)组网架构
天线314可用于将传输线中的电磁能转换成自由空间中的电磁波，或者将自由空间中 的电磁波转换成传输线中的电磁能。耦合器310用于将天线314接收到的移动通信信号分成多路，分配给多个的接收器308。
发射器306可用于对终端处理器304输出的信号进行发射处理。接收器308可用于对天线314接收的移动通信信号进行接收处理。在本申请的一些实施例中，发射器306和接收器308可看作一个无线调制解调器。在终端300中，发射器306和接收器308的数量均可以是一个或者多个。
除了图8所示的发射器306和接收器308，终端300还可包括其他通信部件，例如GPS模块、蓝牙(Bluetooth)模块、无线高保真(Wireless Fidelity，Wi-Fi)模块等。不限于上述表述的无线通信信号，终端300还可以支持其他无线通信信号，例如卫星信号、短波信号等等。不限于无线通信，终端300还可以配置有有线网络接口(如LAN接口)来支持有线通信。
所述输入输出模块可用于实现终端300和用户/外部环境之间的交互，可主要包括音频输入输出模块318、按键输入模块316以及显示器320等。具体实现中，所述输入输出模块还可包括：摄像头、触摸屏以及传感器等等。其中，所述输入输出模块均通过用户接口302与终端处理器304进行通信。
存储器312与终端处理器304耦合，用于存储各种软件程序和/或多组指令。具体实现中，存储器312可包括高速随机存取的存储器，并且也可包括非易失性存储器，例如一个或多个磁盘存储设备、闪存设备或其他非易失性固态存储设备。存储器312可以存储操作系统(下述简称系统)，例如ANDROID，IOS，WINDOWS，或者LINUX等嵌入式操作系统。存储器312还可以存储网络通信程序，该网络通信程序可用于与一个或多个附加设备，一个或多个终端设备，一个或多个网络设备进行通信。存储器312还可以存储用户接口程序，该用户接口程序可以通过图形化的操作界面将应用程序的内容形象逼真的显示出来，并通过菜单、对话框以及按键等输入控件接收用户对应用程序的控制操作。
在本申请的一些实施例中，存储器312可用于存储本申请的一个或多个实施例提供的传输功率控制方法在终端300侧的实现程序。关于本申请的一个或多个实施例提供的传输功率控制方法的实现，请参考后续实施例。
终端处理器304可用于读取和执行计算机可读指令。具体的，终端处理器304可用于调用存储于存储器312中的程序，例如本申请的一个或多个实施例提供的传输功率控制方法在终端300侧的实现程序，并执行该程序包含的指令。
终端处理器304可以为调制解调器(Modem)处理器，是实现3GPP、ETSI等无线通信标准中主要功能的模块。Modem可以作为单独的芯片，也可以与其他芯片或电路在一起形成系统级芯片或集成电路。这些芯片或集成电路可应用于所有实现无线通信功能的设备，包括：手机、电脑、笔记本、平板、路由器、可穿戴设备、汽车、家电设备等。需要说明的是，在不同的实施方式中，终端处理器304处理器可以作为单独的芯片，与片外存储器耦合，即芯片内不包含存储器；或者终端处理器304处理器与片内存储器耦合并集成于芯片中，即芯片内包含存储器。
可以理解的，终端300可以是图1示出的无线通信系统100中的终端103，可实施为移动设备，移动台(mobile station)，移动单元(mobile unit)，无线单元，远程单元，用户代理，移动客户端等等。
需要说明的，图8所示的终端300仅仅是本申请的一种实现方式，实际应用中，终端300还可以包括更多或更少的部件，这里不作限制。
参考图9，图9示出了本申请的一些实施例提供的网络设备400。如图9所示，网络设备400可包括：通信接口403、一个或多个网络设备处理器401、发射器407、接收器409、耦合器411、天线413和存储器405。这些部件可通过总线或者其他方式连接，图9以通过总线连接为例。其中：
通信接口403可用于网络设备400与其他通信设备，例如终端设备或其他基站，进行通信。具体的，所述终端设备可以是图8所示的终端300。通信接口301是指网络设备处理器401与收发系统(由发射器407和接收器409构成)之间的接口，例如LTE中的S1接口。具体实现中，通信接口403可包括：全球移动通信系统(GSM)(2G)通信接口、宽带码分多址(WCDMA)(3G)通信接口，以及长期演进(LTE)(4G)通信接口等等中的一种或几种，也可以是4.5G、5G或者未来新空口的通信接口。不限于无线通信接口，网络设备400还可以配置有有线的通信接口403来支持有线通信，例如一个网络设备400与其他网络设备400之间的回程链接可以是有线通信连接。
天线413可用于将传输线中的电磁能转换成自由空间中的电磁波，或者将自由空间中的电磁波转换成传输线中的电磁能。耦合器411可用于将移动通信号分成多路，分配给多个的接收器409。
发射器407可用于对网络设备处理器401输出的信号进行发射处理。接收器409可用于对天线413接收的移动通信信号进行接收处理。在本申请的一些实施例中，发射器407和接收器409可看作一个无线调制解调器。在网络设备400中，发射器407和接收器409的数量均可以是一个或者多个。
存储器405与网络设备处理器401耦合，用于存储各种软件程序和/或多组指令。具体实现中，存储器405可包括高速随机存取的存储器，并且也可包括非易失性存储器，例如一个或多个磁盘存储设备、闪存设备或其他非易失性固态存储设备。存储器405可以存储操作系统(下述简称系统)，例如uCOS、VxWorks、RTLinux等嵌入式操作系统。存储器405还可以存储网络通信程序，该网络通信程序可用于与一个或多个附加设备，一个或多个终端设备，一个或多个网络设备进行通信。
网络设备处理器401可用于进行无线信道管理、实施呼叫和通信链路的建立和拆除，并为本控制区内用户设备的过区切换进行控制等。具体实现中，网络设备处理器401可包括：管理/通信模块(Administration Module/Communication Module，AM/CM)(用于话路交换和信息交换的中心)、基本模块(Basic Module，BM)(用于完成呼叫处理、消息处理、无线资源管理、无线链路的管理和电路维护功能)、码变换及子复用单元(Transcoder and SubMultiplexer，TCSM)(用于完成复用解复用及码变换功能)等等。
本申请中，网络设备处理器401可用于读取和执行计算机可读指令。具体的，网络设备处理器401可用于调用存储于存储器405中的程序，例如本申请的一个或多个实施例提供的传输功率控制方法在网络设备400侧的实现程序，并执行该程序包含的指令。
网络设备处理器401可以为调制解调器(Modem)处理器，是实现3GPP、ETSI等无线通信标准中主要功能的模块。Modem可以作为单独的芯片，也可以与其他芯片或电路在 一起形成系统级芯片或集成电路。这些芯片或集成电路可应用于所有实现无线通信功能的网络侧设备，例如，在LTE网络中，称为演进的节点B(evolved NodeB，eNB或eNodeB)，在第三代(the 3rd Generation，3G)网络中，称为节点B(Node B)等，在5G网络中，称为5G基站(NR NodeB，gNB)。需要说明的是，在不同的实施方式中，网络设备处理器401可以作为单独的芯片，与片外存储器耦合，即芯片内不包含存储器；或者网络设备处理器401处理器与片内存储器耦合并集成于芯片中，即芯片内包含存储器。
可以理解的，网络设备400可以是图1示出的无线通信系统100中的网络设备101，可实施为基站收发台，无线收发器，一个基本服务集(BSS)，一个扩展服务集(ESS)，NodeB，eNodeB等等。网络设备400可以实施为几种不同类型的基站，例如宏基站、微基站等。网络设备400可以应用不同的无线技术，例如小区无线接入技术，或者WLAN无线接入技术。
需要说明的，图9所示的网络设备400仅仅是本申请的一种实现方式，实际应用中，网络设备400还可以包括更多或更少的部件，这里不作限制。
参见图10，图10示出了本申请的一个实施例提供的无线通信系统的结构示意图。如图10所示，无线通信系统10可包括：终端600、网络设备500。终端600、网络设备500可分别为图1所示的无线通信系统100中的终端103、网络设备101。
如图10所示，终端600可包括：处理单元601和通信单元603。其中：
通信单元603可用于接收网络设备500发送的第一信息。第一信息可指示第一上下行配置。
处理单元601可用于在第一上下行配置指示的部分或全部上行时间资源上进行上行传输。其中，上行传输的实际传输功率等于终端的最大传输功率减去实际功率降幅，符合电磁能量吸收规范。实际功率降幅由第一功率降幅和第一功率增幅计算得到，实际功率降幅小于第一功率降幅。
其中，第一功率增幅等于第一上下行配置下符合电磁能量吸收规范的最大传输功率，与，第二上下行配置下符合电磁能量吸收规范的最大传输功率，的差值；第一上下行配置所确定的第一上行时间占比小于第二上下行配置所确定的第二上行时间占比；第一功率降幅用于在第二上下行配置下，且终端与人体相距第一距离，将传输功率从终端的最大传输功率降低至符合电磁能量吸收规范的最大传输功率。
终端600还可包括：测距单元(未示出)，可用于确定第一距离。该测距单元可以是近距离传感器、雷达测距传感器或红外线测距传感器等。测距单元还可以用于根据使用场景(use case)来确定终端与人体之间的距离。例如，当判断出用户在打电话时，此时终端的听筒开启，则终端可以确定用户与终端之间的距离在特定距离范围内，如0.1mm至1.0mm。
处理单元601还可用于根据测距单元确定的第一距离从第一映射表中查找出该距离对应的功率降幅。第一映射表中可包括多个候选距离以及这多个候选距离对应的功率降幅(简称delta 1)。第一映射表可以根据图2所示的现有技术中的步骤1得到。
处理单元601还可用于根据第一上下行配置确定第一上行时间占比，并可以根据第一上行时间占比，从第二映射表中查找出第一上行时间占比对应的功率增幅(即少降的功率，delta 2)。第二映射表可包括多个候选上行时间占比以及这多个候选上行时间占比对应的功率增幅(简称delta 2)。一个上行时间占比对应的功率增幅表示该上行时间占比相比全上行 配置少降的功率。
在一些实施例中，第一信息可以携带于系统消息(如SIB 1)中，还可以携带于高层消息(如RRC消息中)，也还可以携带于PDCCH(如DCI消息)中。
在一些实施例中，通信单元603还可用于在接收第一信息之前，接收网络设备发送的UL grant，UL grant可携带于DCI消息中，并可以在第一上下行配置指示的上行时间资源中根据UL grant进一步确定上行数据承载于哪一部分上行时间资源。
在一些实施例中，通信单元603还可用于向网络设备发送能力上报消息，该能力上报消息可以携带第二信息(如maxUplinkDutyCycle-PC2-FR1IE)。第二信息可指示终端能够被调度的上行时间在SAR评估周期(如6分钟)内的最大比例。该最大比例可以大于第一值(如90％)，例如最大比例可以设置为100％。这样，UL grant配置给终端的上行时间资源，在第一上下行配置指示的上行时间资源内，所占的比例能够超出第二值(如100％)。也即是说，如果终端能力上报中的该最大比例很大，如100％，那么，网络设备下发的UL grant配置的上行时间资源在第一上下行配比指示的上行时间资源内的占比就可以很高，如100％，有利于终端被配置更多上行时间资源，有利于终端上行传输更多数据。
终端600包括的各个功能单元的具体实现还可参考前述方法实施例，这里不再赘述。
如图10所示，网络设备500可包括：处理单元503和通信单元501。其中：
通信单元501可用于向终端600发送第一信息。
通信单元501还可用于在第一上下行配置指示的部分或全部上行时间资源上接收终端600传输的上行信号。
其中，终端传输上行信号的实际传输功率等于终端的最大传输功率减去实际功率降幅，符合电磁能量吸收规范。实际功率降幅由第一功率降幅和第一功率增幅计算得到，实际功率降幅小于第一功率降幅。第一功率增幅等于第一上下行配置下符合电磁能量吸收规范的最大传输功率，与，第二上下行配置下符合电磁能量吸收规范的最大传输功率，的差值；第一上下行配置所确定的第一上行时间占比小于第二上下行配置所确定的第二上行时间占比；第一功率降幅用于在第二上下行配置下，且终端与人体相距第一距离，将传输功率从终端的最大传输功率降低至符合电磁能量吸收规范的最大传输功率。
在一些实施例中，通信单元501还可用于在发送第一信息之前，向终端600发送UL grant。UL grant可以进一步指示上行信号承载于第一上下行配置指示的上行时间资源中的哪一部分。UL grant可携带于DCI消息中。
在一些实施例中，通信单元501还可用于向接收终端600发送能力上报消息，该能力上报消息可以携带第二信息(如maxUplinkDutyCycle-PC2-FR1IE)。第二信息可指示终端能够被调度的上行时间在SAR评估周期(如6分钟)内的最大比例。该最大比例可以大于第一值(如90％)，例如最大比例可以设置为100％。这样，UL grant配置给终端的上行时间资源，在第一上下行配置指示的上行时间资源内，所占的比例能够超出第二值(如100％)。也即是说，如果终端能力上报中的该最大比例很大，如100％，那么，网络设备下发的UL grant配置的上行时间资源在第一上下行配比指示的上行时间资源内的占比就可以很高，如100％，有利于终端被配置更多上行时间资源，有利于终端上行传输更多数据。
网络设备500包括的各个功能单元的具体实现还可参考前述方法实施例，这里不再赘述。
在终端600、网络设备500中，处理单元可以是处理器或控制器。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，单元和电路。处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，数字信号处理(digital signal processing，DSP)和微处理器的组合等等。存储单元可以是存储器。通信单元具体可以为射频电路、蓝牙芯片、Wi-Fi芯片等与其他电子设备交互的设备。
参见图11，图11示出了本申请提供的一种装置的结构示意图。如图11所示，装置50可包括：处理器501，以及耦合于处理器501的一个或多个接口502。其中：
处理器501可用于读取和执行计算机可读指令。具体实现中，处理器501可主要包括控制器、运算器和寄存器。其中，控制器主要负责指令译码，并为指令对应的操作发出控制信号。运算器主要负责执行定点或浮点算数运算操作、移位操作以及逻辑操作等，也可以执行地址运算和转换。寄存器主要负责保存指令执行过程中临时存放的寄存器操作数和中间操作结果等。具体实现中，处理器501的硬件架构可以是专用集成电路(Application Specific Integrated Circuits,ASIC)架构、MIPS架构、ARM架构或者NP架构等等。处理器501可以是单核的，也可以是多核的。
接口502可用于输入待处理的数据至处理器501，并且可以向外输出处理器501的处理结果。具体实现中，接口502可以是通用输入输出(General Purpose Input Output，GPIO)接口，可以和多个外围设备(如射频模块等等)连接。接口502还可以包括多个独立的接口，例如以太网接口、移动通信接口(如X1接口)等，分别负责不同外围设备和处理器501之间的通信。
本申请中，处理器501可用于从存储器中调用本申请的一个或多个实施例提供的传输功率控制方法在网络设备侧或终端侧的实现程序，并执行该程序包含的指令。接口502可用于输出处理器501的执行结果。本申请中，接口503可具体用于输出处理器501的处理结果。关于本申请的一个或多个实施例提供的传输功率控制方法可参考前述各个实施例，这里不再赘述。
具体的，当装置50实现为本申请中的终端时，接口503可用于将接收器接收到的第一信息(指示第一上下行配置)输入到处理器501，处理器501可用于确定该上下行配置相对于全上行配置能够减少的功率降幅，进而确定实际功率降幅。
具体的，当装置50实现为本申请的中的网络设备时，处理器501可用于确定第一上下行配置，并生成第一信息。接口503可以输出第一信息(指示第一上下行配置)到发射器，发射器可用于发射第一信息(指示第一上下行配置)。
关于第一上下行配置的配置方式、实际功率降幅的确定方式可以参考前述实施例，这里不再赘述。
需要说明的，处理器501、接口502各自对应的功能既可以通过硬件设计实现，也可以通过软件设计来实现，还可以通过软硬件结合的方式来实现，这里不作限制。
在上述实施例中，可以全部或部分的通过软件，硬件，固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式出现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。
所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。该可用介质可以是磁性介质，(例如，软盘，硬盘、磁带)、光介质(例如，DVD)或者半导体介质(例如固态硬盘Solid State Disk(SSD))等。
通过以上的实施方式的描述，所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，仅以上述各功能模块的划分进行举例说明，实际应用中，可以根据需要而将上述功能分配由不同的功能模块完成，即将装置的内部结构划分成不同的功能模块，以完成以上描述的全部或者部分功能。
在本申请所提供的几个实施例中，应该理解到，所揭露的装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述模块或单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个装置，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是一个物理单元或多个物理单元，即可以位于一个地方，或者也可以分布到多个不同地方。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
所述集成的单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个可读取存储介质中。基于这样的理解，本申请实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的全部或部分可以以软件产品的形式体现出来，该软件产品存储在一个存储介质中，包括若干指令用以使得一个设备(可以是单片机，芯片等)或处理器(processor)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (12)

  1. 一种传输功率控制方法，其特征在于，包括：
    终端接收网络设备发送的第一信息，所述第一信息指示第一上下行配置；
    所述终端在所述第一上下行配置指示的部分或全部上行时间资源上进行上行传输；所述上行传输的实际传输功率等于所述终端的最大传输功率减去实际功率降幅，符合电磁能量吸收规范；所述实际功率降幅由第一功率降幅和第一功率增幅计算得到，所述实际功率降幅小于所述第一功率降幅；
    其中，所述第一功率增幅等于所述第一上下行配置下符合电磁能量吸收规范的最大传输功率，与，第二上下行配置下符合电磁能量吸收规范的最大传输功率，的差值；所述第一上下行配置所确定的第一上行时间占比小于所述第二上下行配置所确定的第二上行时间占比；所述第一功率降幅用于在所述第二上下行配置下，且所述终端与人体相距第一距离，将传输功率从所述终端的最大传输功率降低至符合电磁能量吸收规范的最大传输功率。
  2. 如权利要求1所述的方法，其特征在于，所述第二上行时间占比为100％。
  3. 如权利要求2所述的方法，其特征在于，所述第一功率降幅等于所述终端的最大传输功率和第一测量功率的差值，所述第一测量功率为所述终端与所述人体相距所述第一距离时进行连续上行传输测量到的符合电磁能量吸收规范的最大传输功率。
  4. 如权利要求1-3中任一项所述的方法，其特征在于，还包括：所述终端根据所述第一距离从第一映射表中查找出所述第一功率降幅，所述第一映射表包括多个候选距离各自对应的功率降幅，所述多个候选距离包括所述第一距离。
  5. 如权利要求1-4中任一项所述的方法，其特征在于，还包括：所述终端根据所述第一上行时间占比，从第二映射表中查找出所述第一功率增幅，所述第二映射表包括多个候选上行时间占比各自对应的功率增幅，所述多个候选上行时间占比包括所述第一上行时间占比。
  6. 如权利要求1-5中任一项所述的方法，其特征在于，还包括：所述终端确定出所述第一距离。
  7. 如权利要求1-6中任一项所述的方法，其特征在于，所述实际功率降幅等于所述第一功率降幅减去所述第一功率增幅。
  8. 如权利要求1-7中任一项所述的方法，其特征在于，所述第一信息携带在以下一项或多项中：系统信息块SIB、无线资源控制RRC消息、下行控制信息DCI消息。
  9. 如权利要求1-8中任一项所述的方法，其特征在于，还包括：所述终端向所述网络 设备发送能力上报消息，所述能力上报消息中携带第二信息，所述第二信息指示能够被调度的上行时间在电磁能量吸收规范的评估周期内的最大比例；所述最大比例大于第一值。
  10. 如权利要求9所述的方法，其特征在于，还包括：所述终端接收所述网络设备发送的上行授权；所述上行授权配置的上行时间资源，在所述第一上下行配置指示的上行时间资源内，所占的比例大于第二值。
  11. 一种终端，其特征在于，包括：发射器和接收器，存储器以及耦合于所述存储器的处理器，所述存储器用于存储可由所述处理器执行的指令，所述处理器用于调用所述存储器中的所述指令，执行权利要求1-10中任一项所述的方法。
  12. 一种计算机可读存储介质，其特征在于，包括：所述计算机可读存储介质上存储有指令，当所述指令在计算机上运行时，所述计算机执行权利要求1-10中任一项所述的方法。
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