WO2022148236A1 - 功率控制方法和相关设备 - Google Patents

功率控制方法和相关设备 Download PDF

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Publication number
WO2022148236A1
WO2022148236A1 PCT/CN2021/140015 CN2021140015W WO2022148236A1 WO 2022148236 A1 WO2022148236 A1 WO 2022148236A1 CN 2021140015 W CN2021140015 W CN 2021140015W WO 2022148236 A1 WO2022148236 A1 WO 2022148236A1
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Prior art keywords
power
information
spectral density
transmission
frequency domain
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PCT/CN2021/140015
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English (en)
French (fr)
Inventor
沈兴亚
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [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. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a power control method and related devices.
  • power control is very important. For example, by controlling the uplink power of the terminal equipment, the quality of the uplink data sent by the terminal equipment can be guaranteed, the interference to other terminal equipments in the system can be reduced as much as possible, and the battery usage time of the terminal equipment can be prolonged.
  • the power control schemes proposed at present are mainly based on licensed frequency bands. With the expansion of wireless services, licensed frequency bands have been difficult to meet current business needs. For example, 5G communication services have been extended to unlicensed frequency bands. In unlicensed frequency bands, there are stricter requirements for power control. Under the premise that wireless services are extended to unlicensed frequency bands, how to perform power control becomes a problem that needs to be solved.
  • the embodiments of the present invention provide a power control method and related equipment, which can determine the threshold constraint of the uplink transmit power according to the power spectral density information, so that the actual uplink transmit power of the terminal equipment does not exceed the standard requirements of the power spectral density information. .
  • an embodiment of the present invention provides a power control method, including: determining a power control parameter, where the power control parameter includes: power spectral density information and frequency domain width information; The frequency domain width information is used to determine the first reference power; according to the first reference power, the first transmission power is determined, and the first transmission power is the power for sending uplink information.
  • the power spectral density information includes: limited power spectral density; the limited power spectral density is pre-configured according to a communication protocol; or, the limited power spectral density is configured according to high-layer signaling from a network device.
  • the frequency domain width information includes one or more of the following information of frequency domain resources occupied by uplink transmission:
  • determining the first reference power according to the power spectral density information and the frequency domain width information includes: according to the formula Determine the first reference power; wherein, X represents the restricted power spectral density, X is a natural number, M RB, b, f, c represent the number of resource blocks occupied by the uplink channel, Indicates the number of subcarriers contained in a single resource block.
  • the power control parameters further include: a first parameter group, and/or a second parameter group; the first parameter group is used to determine the maximum transmit power of the terminal device at an uplink transmission opportunity; the second parameter group The parameter group is used to determine the second reference power, and the second reference power is the power required for transmitting uplink information;
  • Determining the first transmit power according to the first reference power includes: determining the first transmit power according to at least one of the maximum transmit power and the second reference power, and the first reference power.
  • determining the first transmission power according to at least one of the maximum transmission power and the second reference power, and the first reference power includes: combining the maximum transmission power, the first reference power A minimum value of a reference power and the second reference power is determined as the first transmit power.
  • the power control parameter is the power control parameter of the physical uplink control channel PUCCH, and the first transmission power is the transmission power of the PUCCH; or,
  • the power control parameter is the power control parameter of the physical uplink shared channel PUSCH, and the first transmission power is the transmission power of the PUSCH; or,
  • the power control parameter is the power control parameter of the uplink sounding reference signal SRS, and the first transmission power is the transmission power of the SRS.
  • an embodiment of the present invention provides a terminal device, including: a parameter acquisition module for determining power control parameters, where the power control parameters include: power spectral density information and frequency domain width information; and a processing module for Determine a first reference power according to the power spectral density information and the frequency domain width information; and determine a first transmission power according to the first reference power, where the first transmission power is the power for transmitting uplink information.
  • an embodiment of the present invention provides a terminal device, including: at least one processor; and at least one memory communicatively connected to the processor, wherein: the memory stores a program that can be executed by the processor Program instructions, which are invoked by the processor to perform the method according to the first aspect or any possible embodiment of the first aspect.
  • an embodiment of the present invention provides a communication chip, including: a processor configured to execute computer program instructions stored in a memory, wherein, when the computer program instructions are executed by the processor, trigger the The communication chip performs the method according to the first aspect or any possible embodiments of the first aspect.
  • an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium includes a stored program, wherein, when the program runs, a device on which the computer-readable storage medium is located is controlled to execute an The method of the first aspect or any possible embodiment of the first aspect.
  • FIG. 1 is a schematic diagram of a scenario of a communication system provided by an embodiment of the present invention.
  • FIG. 2 is a flowchart of a power control method provided by an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a terminal device provided by an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of another terminal device provided by an embodiment of the present invention.
  • FIG. 1 is a schematic diagram of a scenario of a communication system provided by an embodiment of the present invention.
  • the communication system 100 may be a wireless communication system, and the wireless communication system may operate in a licensed frequency band or an unlicensed frequency band. It can be understood that the use of the unlicensed frequency band can improve the system capacity of the wireless communication system, improve the channel access efficiency, improve the utilization rate of spectrum resources, and finally improve the system performance.
  • the communication system 100 may include at least one network device 101 and at least one terminal device 102 . Wired or wireless communication technology connection. It should be noted that the number and form of the terminal devices 102 and the network devices 101 shown in FIG. 1 do not constitute a limitation on the embodiments of the present application. In different embodiments, the network device 101 may also be connected to a core network device, which is not shown in FIG. 1 .
  • the wireless communication systems mentioned in the embodiments of the present application include, but are not limited to: Narrow Band-internet of Things (NB-IoT), Global System for Mobile Communications 100 (Global System for Mobile Communications, GSM) ), Enhanced Data Rate for GSM Evolution (EDGE), Wideband Code Division Multiple Access (WCDMA), Code Division Multiple Access 2000 (Code Division Multiple Access, CDMA2000) , Time division synchronous code division multiple access system (Time division-Synchronization Code Division Multiple Access, TDSCDMA), long term evolution system (Long Termevolution, LTE), fifth generation mobile communication system, vehicle wireless short-range communication system and future mobile communication system.
  • NB-IoT Narrow Band-internet of Things
  • GSM Global System for Mobile Communications 100
  • EDGE Enhanced Data Rate for GSM Evolution
  • WCDMA Wideband Code Division Multiple Access
  • CDMA2000 Code Division Multiple Access 2000
  • TDSCDMA Time division synchronous code division multiple access system
  • LTE Long Termevolution
  • fifth generation mobile communication system vehicle wireless short-range communication system
  • the above-mentioned network device 101 is a device that is deployed in a wireless access network and provides a wireless communication function for the terminal device 102 .
  • the network device 101 may include, but is not limited to, a base station (Base Station, BS), a station (Station, STA, including an access point (Access Point, AP) and a non-AP station STA), a network controller, a transmission and reception point (Transmission and Reception) Point, TRP), a mobile switching center or a wireless access point in wifi, etc., for example, the device that directly communicates with the terminal device 102 through a wireless channel is usually a base station.
  • the base station may include various forms of macro base station, micro base station, relay station, access point, or remote radio unit (Remote Radio Unit, RRU).
  • RRU Remote Radio Unit
  • the wireless communication with the terminal device 102 may also be other network devices 101 having a wireless communication function, which is not uniquely limited in this application.
  • the terminal device 102 may include, for example, a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal, MT), etc., and is a device that provides voice and/or data communication to a user, For example, a handheld device, vehicle-mounted device, wearable device, computing device, or other processing device linked to a wireless modem with wireless connectivity.
  • UE User Equipment
  • MS Mobile Station
  • MT mobile terminal
  • MT mobile terminal
  • terminals are: mobile phone (Mobile Phone), tablet computer, notebook computer, PDA, mobile Internet device (Mobile Internet Device, MID), wearable device, virtual reality (Virtual Reality, VR) equipment, augmented reality (Augmented Reality, AR) equipment, wireless terminals in Industrial Control, wireless terminals in Self Driving, wireless terminals in Remote Medical Surgery, Smart Grid wireless terminals in transportation safety (Transportation Safety), wireless terminals in Smart City (Smart City), wireless terminals in Smart Home (Smart Home), etc.
  • VR Virtual Reality
  • AR Augmented Reality
  • wireless terminals in Industrial Control wireless terminals in Self Driving
  • Wireless terminals in Remote Medical Surgery Smart Grid wireless terminals in transportation safety (Transportation Safety)
  • Smart City Smart City
  • Smart Home Smart Home
  • the power control is very important. For example, in the unlicensed frequency band near 60GHz, the power spectral density (Power Spectral Density) of terminal equipment and network equipment is limited. That is, if the frequency domain width of the signal is 1MHz, its maximum transmit power cannot exceed a certain set value XdBm.
  • the first reference power is determined based on the power spectral density, and when the actual transmit power of the terminal device is determined, the first reference power is used as one of the upper limits of the actual transmit power of the terminal device, so that the final determination The transmit power meets the power spectral density requirements.
  • FIG. 2 is a power control method provided by an embodiment of the present invention.
  • the execution body of the method may be a terminal device in the system shown in FIG. 1 .
  • the processing steps of the method include:
  • the power control parameter includes: power spectral density information and frequency domain width information.
  • the power spectral density information may include limited power spectral density.
  • the limited power spectral density may be pre-configured according to the communication protocol.
  • the terminal device may determine the value of the restricted power spectral density according to the pre-configuration of the communication protocol.
  • the limited power spectral density may be a natural number, such as 13dBm.
  • the limited power spectral density may be configured according to higher layer signaling from the network device.
  • the high-layer signaling may be, for example, Radio Resource Control (Radio Resource Control, RRC) signaling or System Information Block (System Information Block, SIB) signaling or Downlink Control Information (Downlink Control Information, DCI) signaling )Wait.
  • RRC Radio Resource Control
  • SIB System Information Block
  • DCI Downlink Control Information
  • the above frequency domain width information is information used to indicate the frequency domain width of uplink channel resources.
  • the frequency domain width information may include one or more of the number of resource blocks, the interval of resource blocks, the number of subcarriers, and the interval of subcarriers.
  • the frequency domain width information includes the number of resource blocks, and the number of subcarriers included in each resource block is a fixed value, for example, 12. That is, the frequency domain width information includes only the number of resource blocks.
  • the frequency domain width information includes the number of resource blocks and the interval between resource blocks, and the number of subcarriers included in each resource block is a fixed value. That is, when the uplink channel frequency domain resource includes multiple physical resource blocks, the multiple physical resource blocks may be distributed at intervals.
  • the number of subcarriers and the subcarrier interval included in each resource block may also be configured, and the frequency domain width information may also include the number of subcarriers and the subcarrier interval included in each resource block.
  • the frequency domain width information may be configured according to high-layer signaling from the network device.
  • the frequency domain width information may be carried in RRC signaling, SIB signaling, or DCI signaling.
  • the first reference power is one of the upper limits of the actual transmit power determined according to the power spectral density information.
  • X represents the restricted power spectral density.
  • X is a natural number, which is pre-defined by the protocol; optionally, X is a natural number, which is obtained by high-layer signaling configuration.
  • M RB,b,f,c represent the number of physical resource blocks (Physical Resource Block, PRB) occupied by the uplink channel. Indicates the number of subcarriers contained in a single PRB.
  • the first transmit power is the power at which the terminal device transmits uplink information.
  • the first transmit power is less than or equal to the above-mentioned first reference power. That is, the actual transmission power of the terminal equipment does not exceed the specification of the limited power spectral density.
  • the above-mentioned power control parameters further include: a first parameter group, and/or a second parameter group.
  • the first parameter group is used to determine the maximum transmit power of the terminal device at the uplink transmission occasion.
  • the second parameter group is used to determine the second reference power, and the second reference power is the power required by the terminal device to transmit uplink information.
  • the above-mentioned first parameter group may include the maximum transmit power.
  • the maximum transmit power may be carried in high-layer signaling, and the high-layer signaling may be, for example, RRC signaling, SIB signaling, or DCI.
  • the parameters included in the second parameter group may be pre-configured according to a communication protocol and/or may be configured according to high-layer signaling.
  • the parameters included in the second parameter group may be carried in at least one of the following signaling as required: possible signaling such as RRC signaling, SIB signaling, DCI or transmission power control (Transmission Power Control, TPC) commands middle.
  • possible signaling such as RRC signaling, SIB signaling, DCI or transmission power control (Transmission Power Control, TPC) commands middle.
  • TPC Transmission Power Control
  • the parameters included in the second parameter group may all be carried in one type of signaling, or may be carried separately through multiple types of signaling.
  • the terminal device may determine the first transmit power according to at least one of the maximum transmit power and the second reference power, and the first reference power.
  • the terminal device may determine the above-mentioned first transmit power according to the maximum transmit power and the first reference power.
  • the terminal device may determine the minimum value of the maximum transmit power and the first reference power as the first transmit power.
  • the terminal device may determine the above-mentioned first transmit power according to the first reference power and the second reference power.
  • the terminal device may determine the minimum value of the first reference power and the second reference power as the first transmit power.
  • the terminal device may determine and determine the first transmit power according to the maximum transmit power, the first reference power, and the second reference power. During specific implementation, the terminal device may determine the minimum value among the maximum transmit power, the first reference power, and the second reference power as the first transmit power.
  • the terminal device may first determine the first minimum value among the maximum transmission power and the second reference power, and then determine the minimum value among the first minimum value and the first reference power as the first minimum value. a transmit power.
  • the terminal device may also first determine the second minimum value among the maximum transmission power and the first reference power, and then determine the minimum value among the second minimum value and the second reference power as the first transmission power.
  • the terminal device determines the actual transmit power of the terminal device according to the maximum transmit power of the uplink transmission opportunity, the power required by the terminal device to transmit uplink information, and the maximum transmit power of the frequency domain width scheduled under the power spectral density limit , so that the determined transmit power conforms to the power spectral density limit.
  • the power control parameter determined by the terminal device is a power control parameter of a physical uplink shared channel (Physical Uplink Shared Channel, PUSCH), and the first transmit power is the transmit power of the PUSCH.
  • PUSCH Physical Uplink Shared Channel
  • the terminal device transmits the PUSCH on the activated uplink-carrier bandwidth part (UL-BWP) of serving cell c using the parameter set configuration with index j and the PUSCH power control adjustment state with index 1, the terminal The actual transmit power (corresponding to the first transmit power) of the device at the PUSCH transmission opportunity i can be expressed as P PUSCH,b,f,c (i,j,q d ,l), where:
  • P CMAX,f,c (i) is the maximum transmit power of the terminal device defined by the terminal device on serving cell c and PUSCH transmission opportunity i.
  • step 202 For the first reference power determined according to the power spectral density information and the frequency domain width information, refer to the description of step 202 for the specific meaning, which will not be repeated.
  • the power required for PUSCH transmission of the terminal device that is, corresponding to the above-mentioned second reference power.
  • P 0_PUSCH,b,f,c (j) is the received power expected by the network device.
  • P 0_PUSCH,b,f,c (j) P 0_NOMINAL_PUSCH,c (j)+P 0_UE_PUSCH,b,c (j), where P 0_NOMINAL_PUSCH,c (j) represents the transmission power of the PUSCH expected by the network device;
  • P 0_UE_PUSCH,b,c (j) represents the power offset of the terminal device relative to P 0_NOMINAL_PUSCH,c (j). j ⁇ 1,...,J-1 ⁇ .
  • ⁇ b,f,c (j) represents the open loop loss compensation coefficient of the terminal equipment.
  • the network equipment determines the weight of the path loss in the uplink power control of the terminal equipment through ⁇ b, f, c (j).
  • ConfiguredGrantConfig provides an index P0-PUSCH-AlphaSetId for a set of high-level parameters P0-PUSCH-AlphaSet of activated UL-BWP of serving cell c.
  • PL b,f,c (q d ) represents the downlink path loss estimate, and the unit is dB, which is calculated by the terminal device according to the Cell Reference Signal (CRS) of the serving cell c that activates the UL-BWP.
  • CRS Cell Reference Signal
  • PL b,f,c (q d ) referenceSignalPower—higher layer filtering RSRP, where referenceSignalPower (reference signal power) is provided by high layer signaling, and high layer filtering RSRP (Reference Signal Receiving Power, reference signal receiving power) is provided by the parameter QuantityConfig.
  • ⁇ TF ,b,f,c (i) represents the power offset of different modulation and coding scheme (Modulation and Coding Scheme, MCS) formats relative to the reference MCS format.
  • MCS Modulation and Coding Scheme
  • K s is provided by the high layer parameter deltaMCS of the activated UL-BWP of the serving cell c.
  • BPRE and UL-BWP activation of serving cell c The calculation is as follows:
  • the PUSCH transmission includes uplink shared channel (UpLink-Shared Channel, UL-SCH) data
  • C represents the number of transmitted code blocks r
  • K r represents the size of the code block r
  • N RE represents the number of resource elements.
  • DMRS demodulation reference signal
  • PTRS Phase Tracking Reference, Signal
  • f b,f,c (i,l) represents the PUSCH power control adjustment state of the active UL-BWP of the serving cell c at the transmission opportunity i.
  • ⁇ PUSCH,b,c (i) is a correction value, also called TPC command.
  • ⁇ PUSCH,b,c (i) is contained in DCI format 0_0 or DCI format 0_1 that schedules PUSCH transmission occasion i on the activated UL-BWP of serving cell c, or is jointly encoded with other TPC commands in DCI format 2_2, the DCI format 2_2 has CRC parity bits scrambled by TPC-PUSCH-RNTI.
  • PUSCH power control adjustment state that the serving cell c activates the scheduling PUSCH transmission opportunity i on the UL BWP, including the cumulative type and the absolute type. Accumulation is enabled if provided based on the high-level parameter tpc-Accumulation.
  • Serving cell c activates UL-BWP, there is a base between K PUSCH (ii 0 )-1 symbol before PUSCH transmission opportunity ii 0 to K PUSCH (i) symbol before PUSCH transmission opportunity i
  • K PUSCH (i) symbol before PUSCH transmission opportunity i
  • K PUSCH (i) is the number of symbols between the last symbol received by serving cell c for the associated PDCCH reception on UL BWP b and the first symbol of the PUSCH transmission.
  • K PUSCH (i) is the number of K PUSCH,min symbols on the active UL BWP b of serving cell c, equal to each slot The product of the number of symbols in and the minimum value provided by k2 in PUSCH-ConfigCommon.
  • f b,c (0) ⁇ P rampup,b,c + ⁇ msg2,b,c , where, ⁇ msg2,b,c is the TPC command indicated in the random access response grant corresponding to the random access preamble sent on the serving cell c activated UL-BWP.
  • ⁇ P rampuprequested,b,c is provided by higher layers and corresponds to the total power rise requested by higher layers from the first to the last random access preamble on serving cell c, is the number of resource blocks allocated by PUSCH resources when serving cell c activates the first PUSCH transmission on UL BWP b , ⁇ TF,b,c (0) is the power adjustment for the first PUSCH transmission on UL BWP b activated by serving cell c.
  • the power control parameter determined by the terminal device is the power control parameter of a physical uplink control channel (Physical Uplink Control Channel, PUCCH), and the first transmit power is the transmit power of the PUCCH.
  • PUCCH Physical Uplink Control Channel
  • the actual transmit power (corresponding to the first transmit power) of the terminal device at the PUCCH transmission opportunity i can be expressed as P PUCCH,b,f ,c (i,q u ,q d ,l), where:
  • P CMAX,f,c (i) is the maximum transmit power of the terminal equipment defined by the terminal equipment on serving cell c and PUCCH transmission opportunity i.
  • step 202 For the first reference power determined according to the power spectral density information and the frequency domain width information, refer to the description of step 202 for the specific meaning, which will not be repeated.
  • the power required for PUCCH transmission by the terminal device that is, corresponding to the above-mentioned second reference power.
  • P 0_PUCCH,b,f,c ( qu ) represents the received power expected by the network device.
  • P 0_PUCCH,b,f,c (q u ) P 0_NOMINAL_PUCCH_c (q u )+P 0_UE_PUCCH_c (q u ), where P 0_NOMINAL_PUCCH_c (q u ) represents the PUCCH transmit power expected by the network device;
  • P 0_UE_PUCCH_c (q u ) Represents the power offset of the terminal device relative to P 0_NOMINAL_PUCCH_c ( qu ).
  • ⁇ F_PUCCH (F) is determined according to the relative relationship between the used PUCCH format and PUCCH format la.
  • ⁇ TF ,b,f,c (i) is a PUCCH transmission power adjustment parameter.
  • g b,f,c (i,l) represents the adjustment value of the terminal equipment closed-loop power control, which is obtained according to the TPC command mapping in the PDCCH.
  • the power control parameter determined by the terminal device is an uplink sounding reference signal (Sounding Reference Signal, SRS) power control parameter
  • the first transmit power is the transmit power of the SRS.
  • SRS Sounding Reference Signal
  • the actual transmit power determined by the terminal device according to the maximum transmit power, the first reference power and the second reference power can be expressed as P SRS,b,f,c (i,q s ,l), where:
  • P CMAX,f,c (i) is the maximum transmit power of the terminal equipment defined by the terminal equipment on serving cell c and SRS transmission opportunity i.
  • step 202 For the first reference power determined according to the power spectral density information and the frequency domain width information, refer to the description of step 202 for the specific meaning, which will not be repeated.
  • P 0_SRS,b,f,c (j)+10log 10 (2 ⁇ ⁇ M SRS,b,f,c (i))+ ⁇ SRS,b,f,c (j) ⁇ PL b,f,c ( q d )+h b,f,c (i,l) is the power required by the terminal equipment for SRS transmission, that is, corresponding to the above-mentioned second reference power.
  • P 0_SRS,b,f,c (j) represents the received power expected by the network device.
  • ⁇ SRS,b,f,c (j) represents the open loop loss compensation coefficient of the terminal equipment.
  • the network equipment determines the weight of the path loss in the uplink power control of the terminal equipment through ⁇ SRS,b,f,c (j).
  • PL b,f,c (q d ) represents the downlink path loss estimate
  • the unit is dB
  • RS Reference Signal
  • PL b,f,c (q d ) referenceSignalPower—higher layer filtering RSRP, where referenceSignalPower (reference signal power) is provided by high layer signaling, and high layer filtering RSRP (Reference Signal Receiving Power, reference signal receiving power) is provided by the parameter QuantityConfig.
  • h b,f,c (i,l) represents the adjustment value of the terminal equipment closed-loop power control, which is obtained according to the TPC command mapping in the PDCCH.
  • an embodiment of the present invention further provides a terminal device.
  • these terminal devices can be configured by using commercially available hardware components through the steps taught in this solution.
  • the terminal device includes: a parameter acquisition module 301 and a processing module 302, wherein the parameter acquisition module 301 is used to determine a power control parameter, and the power control parameter includes: power spectral density information and frequency domain width information; A processing module 302, configured to determine a first reference power according to the power spectral density information and the frequency domain width information; and, according to the first reference power, determine a first transmit power, where the first transmit power is The power of sending uplink information.
  • the terminal device in this embodiment of the present invention may execute the power control method in the embodiment shown in FIG. 2 .
  • the terminal device in this embodiment of the present invention may execute the power control method in the embodiment shown in FIG. 2 .
  • the terminal device in this embodiment of the present invention may execute the power control method in the embodiment shown in FIG. 2 .
  • the related description of the embodiment shown in FIG. 2 For parts that are not described in detail in this embodiment, reference may be made to the related description of the embodiment shown in FIG. 2 .
  • each module of the terminal device shown in FIG. 3 is only a division of logical functions, and may be fully or partially integrated into a physical entity in actual implementation, or may be physically separated.
  • these modules can all be implemented in the form of software calling through processing elements; they can also all be implemented in hardware; some modules can also be implemented in the form of software calling through processing elements, and some modules can be implemented in hardware.
  • the processing module may be a separately established processing element, or may be integrated in a certain chip of the electronic device.
  • the implementation of other modules is similar.
  • all or part of these modules can be integrated together, and can also be implemented independently.
  • each step of the above-mentioned method or each of the above-mentioned modules can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.
  • the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more specific integrated circuits (Application Specific Integrated Circuit; hereinafter referred to as: ASIC), or, one or more microprocessors Digital Singnal Processor (hereinafter referred to as: DSP), or, one or more Field Programmable Gate Array (Field Programmable Gate Array; hereinafter referred to as: FPGA), etc.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Singnal Processor
  • FPGA Field Programmable Gate Array
  • these modules can be integrated together and implemented in the form of a system-on-a-chip (System-On-a-Chip; hereinafter referred to as: SOC).
  • An embodiment of the present invention further provides a communication chip, including: a processing module configured to determine a first reference power according to power spectral density information and frequency domain width information included in a power control parameter; and, according to the first reference power, Determine the first transmit power, where the first transmit power is the power for transmitting uplink information.
  • the processing modules included in the communication chip in this embodiment may be implemented in the form of software called by processing elements, or may be implemented in hardware; the functions implemented by the processing modules may also be partially implemented in software and partially implemented in hardware. form of realization. For a specific implementation manner, reference may be made to the implementation manner of each module in FIG. 3 , which will not be repeated here.
  • FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 4 shows a simplified schematic diagram of a possible design structure of the terminal device involved in the above method embodiment.
  • the terminal device includes a transceiver 401, a processor 402, a memory 403 and a modem 404, and the transceiver 401, the processor 402, the memory 403 and the modem 404 are connected through a bus.
  • the transceiver 401 conditions (eg, analog converts, filters, amplifies, and upconverts, etc.) the output samples and generates an uplink signal that is transmitted via the antenna to the network devices in the above-described embodiments.
  • the antenna receives the downlink signal from the network equipment in the above-mentioned embodiments.
  • the transceiver 401 conditions (eg, filters, amplifies, downconverts, and digitizes, etc.) the signal received from the antenna and provides input samples.
  • encoder 4041 receives and processes (e.g., formats, encodes, and interleaves) the traffic data and signaling messages to be sent on the uplink .
  • Modulator 4042 further processes (eg, symbol mapping and modulation) the encoded traffic data and signaling messages and provides the output samples described above.
  • a demodulator 4043 processes (eg, demodulates) the input samples and provides symbol estimates.
  • a decoder 4044 processes (eg, deinterleaves and decodes) the symbol estimates and provides decoded data and signaling messages for transmission to the terminal device.
  • the encoder 4041 , the modulator 4042 , the demodulator 4043 and the decoder 4044 may be implemented by the combined modem 404 . These elements are processed according to the radio access technology employed by the radio access network (eg, access technologies for LTE, 5G, and other evolved systems).
  • the transceiver 401 is integrated by the transmitter and the receiver. In other embodiments, the transmitter and the receiver may be independent of each other.
  • the processor 402 controls and manages the terminal device, and is configured to execute the processing steps performed by the terminal device in the foregoing method embodiments. For example, for controlling the terminal device to perform uplink power control and/or other processes of the techniques described in this application.
  • the processor 402 is configured to support the terminal device to perform the process of FIG. 2 and related to the terminal device.
  • the processor 402 may include one or more processors, such as one or more CPUs, and the processor 402 may be integrated into a chip, or may be the chip itself.
  • the memory 403 is used to store relevant instructions and data, as well as program codes and data of the terminal.
  • the memory 403 includes, but is not limited to, a random access memory (Random Access Memory, RAM), a read-only memory (Read-Only Memory, ROM), an erasable programmable read-only memory (Erasable Programmable Read) Only Memory, EPROM), non-transitory computer readable storage medium (non-transitory computer readable storage medium) or portable read-only memory (Compact Disc Read-Only Memory, CDROM).
  • the memory 403 is independent of the processor 402 . In other embodiments, the memory 403 may also be integrated in the processor 402 .
  • FIG. 4 only shows a simplified design of the terminal device.
  • the terminal device may include any number of transmitters, receivers, processors, memories, etc., and all terminal devices that can implement the present application are within the protection scope of the present application.
  • an embodiment of the present application further provides a communication system, where the communication system includes a network device and the terminal device shown in FIG. 4 .
  • the present application further provides a computer storage medium, wherein the computer storage medium can store a program, and when the program is executed, it can include some or all of the steps in the various embodiments provided in the present application.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (English: read-only memory, abbreviated as: ROM) or a random access memory (English: random access memory, abbreviated as: RAM) and the like.
  • an embodiment of the present application further provides a computer program product, where the computer program product includes executable instructions, and when the executable instructions are executed on a computer, causes the computer to execute part or some of the above method embodiments. all steps.
  • “at least one” refers to one or more, and “multiple” refers to two or more.
  • “And/or”, which describes the association relationship of the associated objects means that there can be three kinds of relationships, for example, A and/or B, which can indicate the existence of A alone, the existence of A and B at the same time, and the existence of B alone. where A and B can be singular or plural.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • “At least one of the following” and similar expressions refer to any combination of these items, including any combination of single or plural items.
  • At least one of a, b, and c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple.
  • any function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present invention can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM for short), random access memory (RAM for short), magnetic disk or CD, etc. that can store program codes medium.

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Abstract

本申请涉及通信技术领域，尤其涉及一种功率控制方法和相关设备。该方法包括：确定功率控制参数，所述功率控制参数包括：功率谱密度信息和频域宽度信息；根据所述功率谱密度信息和所述频域宽度信息，确定第一参考功率；根据所述第一参考功率，确定第一发送功率，所述第一发送功率为发送上行信息的功率。本发明实施例方案能够根据功率谱密度信息确定上行发送功率的阈值约束，使终端设备的实际上行发送功率不超出功率谱密度信息的规范要求。

Description

功率控制方法和相关设备
本申请要求于2021年01月07日提交中国专利局、申请号为202110016508.0、申请名称为“功率控制方法和相关设备”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
本申请涉及通信技术领域，尤其涉及一种功率控制方法和相关设备。
背景技术
在无线通信系统中，功率控制是非常重要的。例如，通过对终端设备的上行功率进行控制，可以保证终端设备上行发送数据的质量，又可以尽可能减少对系统中其它终端设备的干扰，延长终端设备的电池使用时间等。但是目前提出的功率控制方案主要是基于授权频段提出的。随着无线业务的扩展，授权频段已难以满足当前的业务需求，例如5G通信业务已经扩展到非授权频段。而在非授权频段，对功率控制又有较为严格的要求。在无线业务扩展到非授权频段的前提下，如何进行功率控制成为一个需要解决的问题。
发明内容
有鉴于此，本发明实施例提供了一种功率控制方法和相关设备，能够根据功率谱密度信息确定上行发送功率的阈值约束，使终端设备的实际上行发送功率不超出功率谱密度信息的规范要求。
第一方面，本发明实施例提供了一种功率控制方法，包括：确定功率控制参数，所述功率控制参数包括：功率谱密度信息和频域宽度信息；根据所述功率谱密度信息和所述频域宽度信息，确定第一参考功率；根据所述第一参考功率，确定第一发送功率，所述第一发送功率为发送上行信息的功率。
可选的，所述功率谱密度信息包括：受限功率谱密度；所述受限功率谱密度 根据通信协议预先配置；或者，所述受限功率谱密度根据来自网络设备的高层信令配置。
可选的，所述频域宽度信息包括上行传输占据的频域资源的以下一种或多种信息：
资源块数目；
资源块间隔；
子载波数目；
子载波间隔。
可选的，根据所述功率谱密度信息和所述频域宽度信息，确定第一参考功率，包括：根据公式
Figure PCTCN2021140015-appb-000001
确定第一参考功率；其中，X表示受限功率谱密度，X是自然数，M RB,b,f,c表示上行信道所占据的资源块数目，
Figure PCTCN2021140015-appb-000002
表示单个资源块包含的子载波数目。
可选的，所述功率控制参数还包括：第一参数组，和/或，第二参数组；所述第一参数组用于确定终端设备在上行传输时机的最大发送功率；所述第二参数组用于确定第二参考功率，所述第二参考功率是传输上行信息需要的功率；
根据所述第一参考功率，确定第一发送功率，包括：根据所述最大发送功率及所述第二参考功率中的至少一项，以及所述第一参考功率确定所述第一发送功率。
可选的，根据所述最大发送功率及所述第二参考功率中的至少一项，以及所述第一参考功率确定所述第一发送功率，包括：将所述最大发送功率、所述第一参考功率及所述第二参考功率中的最小值确定为所述第一发送功率。
可选的，所述功率控制参数为物理上行控制信道PUCCH的功率控制参数，所第一发送功率为PUCCH的发送功率；或者，
所述功率控制参数为物理上行共享信道PUSCH的功率控制参数，所述第一发送功率为PUSCH的发送功率；或者，
所述功率控制参数为上行探测参考信号SRS的功率控制参数，所述第一发送功率为SRS的发送功率。
第二方面，本发明实施例提供了一种终端设备，包括：参数获取模块，用于确定功率控制参数，所述功率控制参数包括：功率谱密度信息和频域宽度信息；处理模块，用于根据所述功率谱密度信息和所述频域宽度信息，确定第一参考功率；以及，根据所述第一参考功率，确定第一发送功率，所述第一发送功率为发送上行信息的功率。
第三方面，本发明实施例提供了一种终端设备，包括：至少一个处理器；以及与所述处理器通信连接的至少一个存储器，其中：所述存储器存储有可被所述处理器执行的程序指令，所述处理器调用所述程序指令能够执行如第一方面或者第一方面任一可能实施例的方法。
第四方面，本发明实施例提供了一种通信芯片，包括：处理器，其用于执行存储在存储器中的计算机程序指令，其中，当该计算机程序指令被该处理器执行时，触发所述通信芯片执行如第一方面或者第一方面任一可能实施例的方法。
第五方面，本发明实施例提供了一种计算机可读存储介质，所述计算机可读存储介质包括存储的程序，其中，在所述程序运行时控制所述计算机可读存储介质所在设备执行如第一方面或者第一方面任一可能实施例的方法。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1是本发明实施例提供的一种通信系统的场景示意图；
图2是本发明实施例提供的一种功率控制方法的流程图；
图3是本发明实施例提供的一种终端设备的结构示意图；
图4是本发明实施例提供的另一种终端设备的结构示意图。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
图1是本发明实施例提供的一种通信系统的场景示意图。该通信系统100可以是无线通信系统，无线通信系统可以工作在授权频段，也可以工作在非授权频段。可以理解的是，非授权频段的使用可以提高无线通信系统的系统容量，提高信道接入效率，提高频谱资源利用率，并最终提升系统性能。
如图1所示，该通信系统100可以包括至少一个网络设备101和至少一个终端设备102，网络设备101与终端设备102、终端设备102和终端设备102、网络设备101和网络设备101之间通过有线或无线通信技术连接。需要说明的是，图1所示的终端设备102和网络设备101的数量和形态并不构成对本申请实施例的限定。在不同的实施例中，网络设备101还可以连接到核心网设备，核心网设备未在图1中示出。
需要说明的是，本申请实施例提及的无线通信系统包括但不限于：窄带物联网系统(Narrow Band-internet of Things，NB-IoT)、全球移动通信系统100(Global System for Mobile Communications，GSM)、增强型数据速率GSM演进系统(Enhanced Data Rate for GSM Evolution，EDGE)、宽带码分多址系统(Wideband Code Division Multiple Access，WCDMA)、码分多址2000系统(Code Division  Multiple Access，CDMA2000)、时分同步码分多址系统(Timedivision-Synchronization Code Division Multiple Access，TDSCDMA)，长期演进系统(Long Termevolution，LTE)、第五代移动通信系统、车载无线短距通信系统以及未来移动通信系统。
本申请实施例中，上述网络设备101是一种部署在无线接入网中，为终端设备102提供无线通信功能的装置。网络设备101可以包括但不限于基站(Base Station，BS)、站点(Station，STA，包括接入点(Access Point,AP)和非AP站点STA)、网络控制器、传输接收点(Transmission and Reception Point，TRP)、移动交换中心或者wifi中的无线接入点等，示例性地，通过无线信道与终端设备102进行直接通信的装置通常是基站。所述基站可以包括各种形式的宏基站、微基站、中继站、接入点或射频拉远单元(Remote Radio Unit，RRU)等。当然，与终端设备102进行无线通信的也可以是其他具有无线通信功能的网络设备101，本申请对此不做唯一限定。
终端设备102可以包括例如用户设备(User Equipment，UE)、移动台(Mobile Station，MS)、移动终端(Mobile Terminal，MT)等，是一种向用户提供语音和/或数据连通信的设备，例如，具有无线连接功能的手持式设备、车载设备、可穿戴设备、计算设备或链接到无线调制解调器的其他处理设备。目前，一些终端的举例为：手机(Mobile Phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(Mobile Internet Device，MID)、可穿戴设备，虚拟现实(Virtual Reality，VR)设备、增强现实(Augmented Reality，AR)设备、工业控制(Industrial Control)中的无线终端、无人驾驶(Self Driving)中的无线终端、远程手术(Remote Medical Surgery)中的无线终端、智能电网(Smart Grid)中的无线终端、运输安全(Transportation Safety)中的无线终端、智慧城市(Smart City)中的无线终端、智慧家庭(Smart Home)中的无线终端等。当然在不同系统中，设备的名称可能会有所不同，此处不再一一列举赘述。
在无线通信系统中，功率控制是非常重要的。例如，在60GHz附近的非授权频段上，终端设备和网络设备的功率谱密度(Power Spectral Density)受到限制。即如果信号的频域宽度为1MHz，则其最大发送功率不能超过某设定值XdBm。本发明实施例的功率控制方法，基于功率谱密度确定第一参考功率，在确定终端设备的实际发送功率时，将第一参考功率作为终端设备实际发送功率的上限之一，以使最终确定出的发送功率符合功率谱密度要求。
图2是本发明实施例提供的一种功率控制方法。该方法的执行主体可以为图1所示系统中的终端设备。该方法的处理步骤包括：
201，确定功率控制参数，所述功率控制参数包括：功率谱密度信息和频域宽度信息。其中，功率谱密度信息可以包括受限功率谱密度。该受限功率谱密度可以是根据通信协议预先配置的。终端设备可以根据通信协议的预先配置确定受限功率谱密度的取值。例如，受限功率谱密度可以是自然数，如为13dBm。在一些实施例中，受限功率谱密度可以是根据来自网络设备的高层信令配置。在一些实施例中，所述高层信令例如可以是无线资源控制协议(Radio Resource Control，RRC)信令或者系统信息块(System information block，SIB)信令或者下行控制信息(Downlink Control Information，DCI)等。
上述频域宽度信息是用于指示上行信道资源频域宽度的信息。在一些实施例中，频域宽度信息可以包括资源块数目、资源块间隔、子载波数目和子载波间隔中的一种或多种。例如，频域宽度信息包括资源块数目，每个资源块包括的子载波数目为一个固定值，例如为12。即，频域宽度信息仅包含资源块数目。又例如，频域宽度信息包括资源块数目、资源块间隔，每个资源块包括的子载波数目为一个固定值。即，当上行信道频域资源包括多个物理资源块时，多个物理资源块可以间隔分布。当然，在一些实施例中，每个资源块包括的子载波数目和子载波间隔也可以进行配置，此时频域宽度信息中还可以包括每个资源块包括的子载波数目和子载波间隔。可选的，频域宽度信息可以根据来自网络设备的高层信令配置。 可选的，频域宽度信息可以承载于RRC信令或者SIB信令或者DCI等信令中。
202，根据功率谱密度信息和频域宽度信息，确定第一参考功率。该第一参考功率即为根据功率谱密度信息确定的实际发送功率的上限之一。可选的，可以根据公式
Figure PCTCN2021140015-appb-000003
确定第一参考功率。其中，X表示受限功率谱密度。可选的，X是自然数，由协议预先定义；可选的，X是自然数，由高层信令配置获得。M RB,b,f,c表示上行信道所占据的物理资源块(Physical Resource Block，PRB)数目。
Figure PCTCN2021140015-appb-000004
表示单个PRB包含的子载波数目。
203，根据第一参考功率，确定第一发送功率。第一发送功率为终端设备发送上行信息的功率。可选的，该第一发送功率小于或者等于上述第一参考功率。即终端设备的实际上行发送功率不超过受限功率谱密度的规范。
在一些实施例中，上述功率控制参数还包括：第一参数组，和/或，第二参数组。第一参数组用于确定终端设备在上行传输时机的最大发送功率。第二参数组用于确定第二参考功率，第二参考功率是终端设备传输上行信息所需要的功率。可选的，上述第一参数组可以包含所述最大发送功率。具体实施时，所述最大发送功率可以承载于高层信令中，所述高层信令例如可以是RRC信令、SIB信令或者DCI。
上述第二参数组包含的参数可以根据通信协议预先配置和/或可以根据高层信令配置。可选的，第二参数组包含的参数可以根据需要承载于以下至少一种信令中：RRC信令、SIB信令、DCI或者传输功率控制(Transmission Power Control，TPC)命令等可能的信令中。例如，第二参数组包含的参数可以均承载于一种信令中，也可以通过多种信令分别承载。
终端设备在确定发送上行信息的实际发送功率时，可以根据最大发送功率及第二参考功率中的至少一项，以及第一参考功率确定确定上述第一发送功率。
可选的，终端设备可以根据最大发送功率和第一参考功率确定上述第一发送功率。具体实施时，终端设备可以将最大发送功率和第一参考功率中的最小值确 定为第一发送功率。
可选的，终端设备可以根据第一参考功率和第二参考功率确定上述第一发送功率。具体实施时，终端设备可以将第一参考功率和第二参考功率中的最小值确定为第一发送功率。
可选的，终端设备可以根据最大发送功率、第一参考功率和第二参考功率确定确定上述第一发送功率。具体实施时，终端设备可以将最大发送功率、第一参考功率和第二参考功率中的最小值确定为第一发送功率。可选的，终端设备在确定第一发送功率时，可以先确定最大发送功率和第二参考功率中的第一最小值，然后将第一最小值和第一参考功率中的最小值确定为第一发送功率。当然，终端设备也可以先确定最大发送功率和第一参考功率中的第二最小值，然后将第二最小值和第二参考功率中的最小值确定为第一发送功率。
本发明实施例，终端设备根据上行传输时机的最大发送功率、终端设备传输上行信息所需要的功率以及在功率谱密度限制下调度的频域宽度的最大发送功率，来确定终端设备的实际发送功率，以使确定的发送功率符合功率谱密度的限制。
在一些实施例中，终端设备确定的功率控制参数为物理上行共享信道(Physical Uplink Shared Channel，PUSCH)的功率控制参数，则第一发送功率为PUSCH的发送功率。具体的，如果终端设备在服务小区c的激活上行-载波带宽部分(Uplink-Carrier Bandwidth Part，UL-BWP)上发送PUSCH使用带索引j的参数集配置和索引l的PUSCH功率控制调整状态，终端设备在PUSCH传输时机i的实际发送功率(对应第一发送功率)可以表示为P PUSCH,b,f,c(i,j,q d,l)，其中：
Figure PCTCN2021140015-appb-000005
其中，P CMAX,f,c(i)为终端设备在服务小区c、PUSCH传输时机i上定义的终端 设备的最大发送功率。
Figure PCTCN2021140015-appb-000006
为根据功率谱密度信息和频域宽度信息，确定的第一参考功率，具体含义参见步骤202的说明，不再赘述。
Figure PCTCN2021140015-appb-000007
Figure PCTCN2021140015-appb-000008
为终端设备PUSCH传输所需要的功率，即对应上述第二参考功率。
其中，P 0_PUSCH,b,f,c(j)为网络设备期待的接收功率。P 0_PUSCH,b,f,c(j)＝P 0_NOMINAL_PUSCH,c(j)+P 0_UE_PUSCH,b,c(j)，其中，P 0_NOMINAL_PUSCH,c(j)表示网络设备期望的PUSCH的发射功率；P 0_UE_PUSCH,b,c(j)表示终端设备相对于P 0_NOMINAL_PUSCH,c(j)的功率偏置。j∈{1,…，J-1}。
如果PUSCH传输由RAR上行授权所调度，则j＝0，P 0_UE_PUSCH,b,c(0)＝0，并且P 0_NOMINAL_PUSCH,c(0)＝P 0_PRE+Δ PREAMBLE_Msg3；其中，P 0_PRE可以根据高层信令提供的参数preambleReceivedTargetPower确定。Δ PREAMBLE_Msg3可以根据高层信令提供的参数msg3-DeltaPreamble确定。如果服务小区c中没有提供参数msg3-DeltaPreamble，则Δ PREAMBLE_Msg3＝0。
如果PUSCH传输或者PUSCH重新传输由高层参数ConfiguredGrantConfig配置，则j＝1，P 0_NOMINAL_PUSCH,c(1)由高层参数p0-NominalWithoutGrant提供。如果高层参数p0-NominalWithoutGrant没有提供P 0_NOMINAL_PUSCH,c(1)，则P 0_NOMINAL_PUSCH,c(1)＝P 0_NOMINAL_PUSCH,c(0)。P 0_UE_PUSCH,b,c(1)根据从p0-PUSCH-Alpha获得的高层参数p0确定。ConfiguredGrantConfig为服务小区c的UL-BWP中的一组高层参数P0-PUSCH-AlphaSet提供索引P0-PUSCH-AlphaSetId。
如果PUSCH传输或者PUSCH重新传输由DCI配置，则j＝2，P 0_NOMINAL_PUSCH,c(2)由高层参数p0-NominalWithoutGrant提供。如果高层参数p0-NominalWithoutGrant没有提供P 0_NOMINAL_PUSCH,c(2)，则P 0_NOMINAL_PUSCH,c(2)＝P 0_NOMINAL_PUSCH,c(0)。P 0_UE_PUSCH,b,c(2)由高层参数p0- AlphaSets中的第一个P0-PUSCH-AlphaSet值提供。
α b,f,c(j)表示终端设备的开环路损补偿系数。网络设备通过α b,f,c(j)决定路损在终端设备上行功率控制中的权重。
当j＝0时，α b,f,c(0)根据高层参数msg3-Alpha确定。如果高层参数msg3-Alpha没有提供，则α b,f,c(0)＝1。
当j＝1时，α b,f,c(1)由高层参数ConfiguredGrantConfig提供的p0-PUSCH-Alpha中的alpha提供。ConfiguredGrantConfig为服务小区c的激活UL-BWP的一组高层参数P0-PUSCH-AlphaSet提供索引P0-PUSCH-AlphaSetId。
当j＝2时，α b,f,c(2)由高层参数p0-AlphaSets中的第一个P0-PUSCH-AlphaSet值提供。
PL b,f,c(q d)表示下行链路路损估计，单位是dB，由终端设备根据服务小区c的激活UL-BWP的小区参考信号(Cell Reference Signal，CRS)计算得到。
PL b,f,c(q d)＝referenceSignalPower–高层滤波RSRP，其中referenceSignalPower(参考信号功率)由高层信令提供，高层滤波RSRP(Reference Signal Receiving Power，参考信号接收功率)由参数QuantityConfig提供。
Δ TF,b,f,c(i)表示不同的调制与编码策略(Modulation and Coding Scheme，MCS)格式相对于参考MCS格式的功率偏置。
当K s＝1.25时，
Figure PCTCN2021140015-appb-000009
当K s＝0时，Δ TF,b,f,c(i)＝0。其中，K s由服务小区c的激活UL-BWP的高层参数deltaMCS提供。服务小区c的激活UL-BWP的BPRE和
Figure PCTCN2021140015-appb-000010
计算如下：
当PUSCH传输包括上行共享信道(UpLink-Shared Channel，UL-SCH)数据时，
Figure PCTCN2021140015-appb-000011
其中，C表示传输的码块r的数目，K r表示码块r的大小，N RE表示资源单元的数目。
Figure PCTCN2021140015-appb-000012
其中
Figure PCTCN2021140015-appb-000013
是服务小区c的激活UL-BWP上PUSCH传输时机i传输所使用的 符号数目，
Figure PCTCN2021140015-appb-000014
是一个PUSCH符号j上除掉解调参考信号(Demodulation Reference Signal，DMRS)子载波和相位跟踪参考信号(Phase Tracking Reference，Signal，PTRS)子载波之外的子载波数目，
Figure PCTCN2021140015-appb-000015
当PUSCH包括UL-SCH数据时，
Figure PCTCN2021140015-appb-000016
f b,f,c(i,l)表示服务小区c的激活UL-BWP在传输时机i的PUSCH功率控制调整状态。
δ PUSCH,b,c(i)是一个校正值，也称为TPC命令。δ PUSCH,b,c(i)包含在服务小区c的激活UL-BWP上调度PUSCH传输时机i的DCI格式0_0或DCI格式0_1中，或者与DCI格式2_2中的其他TPC命令联合编码，所述DCI格式2_2具有由TPC-PUSCH-RNTI加扰的CRC奇偶校验比特。
Figure PCTCN2021140015-appb-000017
是服务小区c激活UL BWP上调度PUSCH传输时机i的PUSCH功率控制调整状态，包括累积型和绝对型。如果基于高层参数tpc-Accumulation提供，启用累积。
Figure PCTCN2021140015-appb-000018
是服务小区c激活UL-BWP上，在PUSCH传输时机i-i 0之前K PUSCH(i-i 0)-1个符号到PUSCH传输时机i之前K PUSCH(i)符号之间具有基数
Figure PCTCN2021140015-appb-000019
的TPC命令值的集合D i中的TPC命令值之和，其中，i 0>0是满足PUSCH传输时机i-i 0之前K PUSCH(i-i 0)个符号早于PUSCH传输时机i之前K PUSCH(i)符号的最小的整数。
如果PUSCH传输被DCI格式0_0或者DCI格式0_1调度，K PUSCH(i)是服务小区c激活UL BWP b上相关的PDCCH接收的最后一个符号到PUSCH传输的第一个符号之间的符号数目。
如果PUSCH传输是基于高层参数ConfiguredGrantConfig配置的，K PUSCH(i)是服务小区c激活UL BWP b上K PUSCH,min符号的数量，等于每个时隙
Figure PCTCN2021140015-appb-000020
中的符号数量与PUSCH-ConfigCommon中k2提供的最小值的乘积。
如果UE服务在小区c激活UL BWP b传输时机i-i 0上达到了最大功率，并且
Figure PCTCN2021140015-appb-000021
则f b,c(i)＝f b,c(i-i 0)。
如果UE服务在小区c激活UL BWP b传输时机i-i 0上达到了最小功率，并且
Figure PCTCN2021140015-appb-000022
则f b,c(i)＝f b,c(i-i 0)。
UE在服务在小区c激活UL BWP b上重置PUSCH功率控制累积至f b,c(k)＝0,k＝0,1,...,i。
当高层提供相关的P O_UE_PUSCH,b,c(j)值的一种配置，且当高层提供相关的α b,c(j)值的一种配置时，f b,c(i)＝δ PUSCH,b,c(i)是服务小区c激活UL BWP b上调度PUSCH传输时机i的PUSCH功率控制调整状态，如果基于高层参数tpc-Accumulation，不启用累积。
如果UE接收到针对服务小区c激活UL BWP b上发送的PRACH传输的随机接入响应消息，则f b,c(0)＝△P rampup,b,c+δ msg2,b,c,其中，δ msg2,b,c是随机接入响应许可中指示的TPC命令，该随机接入响应许可对应于在服务小区c激活UL-BWP上发送的随机接入前导码。
Figure PCTCN2021140015-appb-000023
△P rampuprequested,b,c由高层提供，并且对应于服务小区c上从第一个到最后一个随机接入前导码的高层请求的总功率上升，
Figure PCTCN2021140015-appb-000024
是服务小区c激活UL BWP b上第一次PUSCH传输时PUSCH资源分配的资源块数目，△ TF,b,c(0)是服务小区c激活UL BWP b上第一次PUSCH传输的功率调整。
在一些实施例中，终端设备确定的功率控制参数为物理上行控制信道 (Physical Uplink Control Channel，PUCCH)的功率控制参数，则第一发送功率为PUCCH的发送功率。可选的，具体的，如果终端设备在服务小区c的激活UL-BWP上发送PUCCH，终端设备在PUCCH传输时机i的实际发送功率(对应第一发送功率)可以表示为P PUCCH,b,f,c(i,q u,q d,l)，其中：
Figure PCTCN2021140015-appb-000025
P CMAX,f,c(i)为终端设备在服务小区c、PUCCH传输时机i上定义的终端设备的最大发送功率。
Figure PCTCN2021140015-appb-000026
为根据功率谱密度信息和频域宽度信息，确定的第一参考功率，具体含义参见步骤202的说明，不再赘述。
Figure PCTCN2021140015-appb-000027
Figure PCTCN2021140015-appb-000028
为终端设备PUCCH传输所需要的功率，即对应上述第二参考功率。
P 0_PUCCH,b,f,c(q u)表示网络设备期待的接收功率。P 0_PUCCH,b,f,c(q u)＝P 0_NOMINAL_PUCCH_c(q u)+P 0_UE_PUCCH_c(q u)，其中，P 0_NOMINAL_PUCCH_c(q u)表示网络设备期望的PUCCH发射功率；P 0_UE_PUCCH_c(q u)表示终端设备相对于P 0_NOMINAL_PUCCH_c(q u)的功率偏置。
Δ F_PUCCH(F)根据所使用的PUCCH格式与PUCCH format la的相对关系确定。
Δ TF,b,f,c(i)是一个PUCCH传输功率调整参数。
g b,f,c(i,l)表示终端设备闭环功率控制的调整值，根据PDCCH中的TPC命令映射获得。
在一些实施例中，终端设备确定的功率控制参数为上行探测参考信号(Sounding Reference Signal，SRS)功率控制参数，则第一发送功率为SRS的发送功率。则终端设备根据最大发送功率、第一参考功率和第二参考功率确定的实际发送功率可以表示为P SRS,b,f,c(i,q s,l)，其中：
Figure PCTCN2021140015-appb-000029
P CMAX,f,c(i)为终端设备在服务小区c、SRS传输时机i上定义的终端设备的最大发送功率。
Figure PCTCN2021140015-appb-000030
为根据功率谱密度信息和频域宽度信息，确定的第一参考功率，具体含义参见步骤202的说明，不再赘述。
P 0_SRS,b,f,c(j)+10log 10(2 μ·M SRS,b,f,c(i))+α SRS,b,f,c(j)·PL b,f,c(q d)+h b,f,c(i,l)为终端设备SRS传输所需要的功率，即对应上述第二参考功率。
P 0_SRS,b,f,c(j)表示网络设备期待的接收功率。
α SRS,b,f,c(j)表示终端设备的开环路损补偿系数。网络设备通过α SRS,b,f,c(j)决定路损在终端设备上行功率控制中的权重。
PL b,f,c(q d)表示下行链路路损估计，单位是dB，由终端设备根据服务小区c的激活DL-BWP的参考信号(Reference Signal，RS),例如SSB，CSI-RS计算得到。
PL b,f,c(q d)＝referenceSignalPower–高层滤波RSRP，其中referenceSignalPower(参考信号功率)由高层信令提供，高层滤波RSRP(Reference Signal Receiving Power，参考信号接收功率)由参数QuantityConfig提供。
h b,f,c(i,l)表示终端设备闭环功率控制的调整值，根据PDCCH中的TPC命令映射获得。
对应上述功率控制方法，本发明实施例还提供了一种终端设备。本领域技术人员可以理解，这些终端设备均可使用市售的硬件组件通过本方案所教导的步骤进行配置来构成。
如图3所示，该终端设备包括：参数获取模块301和处理模块302，其中，参数获取模块301用于确定功率控制参数，所述功率控制参数包括：功率谱密度信息和频域宽度信息；处理模块302，用于根据所述功率谱密度信息和所述频域宽度信息，确定第一参考功率；以及，根据所述第一参考功率，确定第一发送功 率，所述第一发送功率为发送上行信息的功率。
本发明实施例的终端设备可以执行图2所示实施例的功率控制方法。本实施例未详细描述的部分，可以参考对图2所示实施例的相关说明。该技术方案的执行过程和技术效果参见图2所示实施例中的描述，在此不再赘述。
应理解，图3所示的终端设备的各个模块的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些模块可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分模块以软件通过处理元件调用的形式实现，部分模块通过硬件的形式实现。例如，处理模块可以为单独设立的处理元件，也可以集成在电子设备的某一个芯片中实现。其它模块的实现与之类似。此外这些模块全部或部分可以集成在一起，也可以独立实现。在实现过程中，上述方法的各步骤或以上各个模块可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。
例如，以上这些模块可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(Application Specific Integrated Circuit；以下简称：ASIC)，或，一个或多个微处理器(Digital Singnal Processor；以下简称：DSP)，或，一个或者多个现场可编程门阵列(Field Programmable Gate Array；以下简称：FPGA)等。再如，这些模块可以集成在一起，以片上系统(System-On-a-Chip；以下简称：SOC)的形式实现。
本发明实施例还提供了一种通信芯片，包括：处理模块，其用于根据功率控制参数包括的功率谱密度信息和频域宽度信息，确定第一参考功率；以及，根据第一参考功率，确定第一发送功率，所述第一发送功率为发送上行信息的功率。本实施例通信芯片包含的处理模块在实际实现时可以全部以软件通过处理元件调用的形式实现，也可以全部以硬件的形式实现；处理模块实现的功能还可以部分以软件形式实现，部分通过硬件的形式实现。具体实现方式可以参见图3中个模块的实现方式，此处不再赘述。
图4为本发明实施例提供的一种终端设备的结构示意图。在图4中示出了上述方法实施例中所涉及的终端设备的一种可能的设计结构的简化示意图。终端设备包括收发器401、处理器402、存储器403和调制解调器404，收发器401、处理器402、存储器403和调制解调器404通过总线连接。
收发器401调节(例如，模拟转换、滤波、放大和上变频等)输出采样并生成上行链路信号，该上行链路信号经由天线发射给上述实施例中的网络设备。在下行链路中，天线接收上述实施例中来自网络设备的下行链路信号。收发器401调节(例如，滤波、放大、下变频以及数字化等)从天线接收的信号并提供输入采样。示例性地，在调制处理器404中，编码器4041接收要在上行链路上发送的业务数据和信令消息，并对业务数据和信令消息进行处理(例如，格式化、编码和交织)。调制器4042进一步处理(例如，符号映射和调制)编码后的业务数据和信令消息并提供上述输出采样。解调器4043处理(例如，解调)上述输入采样并提供符号估计。解码器4044处理(例如，解交织和解码)该符号估计并提供发送给终端设备的已解码的数据和信令消息。编码器4041、调制器4042、解调器4043和解码器4044可以由合成的调制解调器404来实现。这些单元根据无线接入网采用的无线接入技术(例如，LTE、5G及其他演进系统的接入技术)来进行处理。在图4所示的实施例中，收发器401由发射器和接收器集成，在其它的实施例中，发射器和接收器也可以相互独立。
处理器402对终端设备进行控制管理，用于执行上述方法实施例中由终端设备进行的处理的步骤。例如，用于控制终端设备进行上行功率控制和/或本申请所描述的技术的其他过程。作为示例，处理器402用于支持终端设备执行图2和涉及终端设备的处理过程。在不同的实施例中，处理器402可以包括一个或多个处理器，例如包括一个或多个CPU，处理器402可以集成于芯片中，或者可以为芯片本身。
存储器403用于存储相关指令及数据，以及终端的程序代码和数据。在不同 的实施例中，存储器403包括但不限于是随机存储记忆体(Random Access Memory，RAM)、只读存储器(Read-Only Memory，ROM)、可擦除可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、非瞬时性计算机可读存储介质(non-transitory computer readable storage medium)或便携式只读存储器(Compact Disc Read-Only Memory，CDROM)。在本实施例中，存储器403独立于处理器402。在其它的实施例中，存储器403还可以集成于处理器402中。
可以理解的是，图4仅仅示出了终端设备的简化设计。在不同的实施例中，终端设备可以包含任意数量的发射器，接收器，处理器，存储器等，而所有可以实现本申请的终端设备都在本申请的保护范围之内。
与上述设备实施例相对应，本申请实施例还提供一种通信系统，该通信系统包括网络设备以及图4所示的终端设备。
具体实现中，本申请还提供一种计算机存储介质，其中，该计算机存储介质可存储有程序，该程序执行时可包括本申请提供的各实施例中的部分或全部步骤。所述的存储介质可为磁碟、光盘、只读存储记忆体(英文：read-only memory，简称：ROM)或随机存储记忆体(英文：random access memory，简称：RAM)等。
具体实现中，本申请实施例还提供了一种计算机程序产品，所述计算机程序产品包含可执行指令，当所述可执行指令在计算机上执行时，使得计算机执行上述方法实施例中的部分或全部步骤。
本申请实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示单独存在A、同时存在A和B、单独存在B的情况。其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项”及其类似表达，是指的这些项中的任意组合，包括单项或复数项的任意组合。例如，a，b和c中的至少一项可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
本领域普通技术人员可以意识到，本文中公开的实施例中描述的各单元及算法步骤，能够以电子硬件、计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
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，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本发明所提供的几个实施例中，任一功能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，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明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部分可以以软件产品的形式体现出来，该计算机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台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明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，简称ROM)、随机存取存储器(random access memory，简称RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本说明书的较佳实施例而已，并不用以限制本说明书，凡在本说明书的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本说明书保护的范围之内。

Claims (11)

  1. 一种功率控制方法，其特征在于，包括：
    确定功率控制参数，所述功率控制参数包括：功率谱密度信息和频域宽度信息；
    根据所述功率谱密度信息和所述频域宽度信息，确定第一参考功率；
    根据所述第一参考功率，确定第一发送功率，所述第一发送功率为发送上行信息的功率。
  2. 根据权利要求1所述的方法，其特征在于，所述功率谱密度信息包括：受限功率谱密度；
    所述受限功率谱密度根据通信协议预先配置；或者，所述受限功率谱密度根据来自网络设备的高层信令配置。
  3. 根据权利要求1所述的方法，其特征在于，所述频域宽度信息包括上行传输占据的频域资源的以下一种或多种信息：
    资源块数目；
    资源块间隔；
    子载波数目；
    子载波间隔。
  4. 根据权利要求1至3任一项所述的方法，其特征在于，根据所述功率谱密度信息和所述频域宽度信息，确定第一参考功率，包括：
    根据公式
    Figure PCTCN2021140015-appb-100001
    确定第一参考功率；
    其中，X表示受限功率谱密度，X是自然数，M RB,b,f,c表示上行信道所占据的资源块数目，
    Figure PCTCN2021140015-appb-100002
    表示单个资源块包含的子载波数目。
  5. 根据权利要求1所述的方法，其特征在于，所述功率控制参数还包括：第一参数组，和/或，第二参数组；所述第一参数组用于确定终端设备在上行传输时机的最大发送功率；所述第二参数组用于确定第二参考功率，所述第二 参考功率是传输上行信息需要的功率；
    根据所述第一参考功率，确定第一发送功率，包括：
    根据所述最大发送功率及所述第二参考功率中的至少一项，以及所述第一参考功率确定所述第一发送功率。
  6. 根据权利要求5所述的方法，其特征在于，根据所述最大发送功率及所述第二参考功率中的至少一项，以及所述第一参考功率确定所述第一发送功率，包括：
    将所述最大发送功率、所述第一参考功率及所述第二参考功率中的最小值确定为所述第一发送功率。
  7. 根据权利要求1所述的方法，其特征在于，所述功率控制参数为物理上行控制信道PUCCH的功率控制参数，所第一发送功率为PUCCH的发送功率；或者，
    所述功率控制参数为物理上行共享信道PUSCH的功率控制参数，所述第一发送功率为PUSCH的发送功率；或者，
    所述功率控制参数为上行探测参考信号SRS的功率控制参数，所述第一发送功率为SRS的发送功率。
  8. 一种终端设备，其特征在于，包括：
    参数获取模块，用于确定功率控制参数，所述功率控制参数包括：功率谱密度信息和频域宽度信息；
    处理模块，用于根据所述功率谱密度信息和所述频域宽度信息，确定第一参考功率；以及，根据所述第一参考功率，确定第一发送功率，所述第一发送功率为发送上行信息的功率。
  9. 一种终端设备，其特征在于，包括：
    至少一个处理器；以及
    与所述处理器通信连接的至少一个存储器，其中：
    所述存储器存储有可被所述处理器执行的程序指令，所述处理器调用所 述程序指令能够执行如权利要求1至7任一所述的方法。
  10. 一种通信芯片，其特征在于，包括：
    处理模块，其用于根据功率控制参数包括的功率谱密度信息和频域宽度信息，确定第一参考功率；以及，根据第一参考功率，确定第一发送功率，所述第一发送功率为发送上行信息的功率。
  11. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质包括存储的程序，其中，在所述程序运行时控制所述计算机可读存储介质所在设备执行权利要求1至7任一所述的方法。
PCT/CN2021/140015 2021-01-07 2021-12-21 功率控制方法和相关设备 Ceased WO2022148236A1 (zh)

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