WO2017193398A1 - 功率控制方法和装置 - Google Patents

功率控制方法和装置 Download PDF

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Publication number
WO2017193398A1
WO2017193398A1 PCT/CN2016/082122 CN2016082122W WO2017193398A1 WO 2017193398 A1 WO2017193398 A1 WO 2017193398A1 CN 2016082122 W CN2016082122 W CN 2016082122W WO 2017193398 A1 WO2017193398 A1 WO 2017193398A1
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Prior art keywords
srs
power control
power
carrier
control parameter
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Ceased
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PCT/CN2016/082122
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English (en)
French (fr)
Inventor
张莉莉
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Priority to CN201811432127.5A priority Critical patent/CN109640385B/zh
Priority to KR1020217009276A priority patent/KR102376071B1/ko
Priority to PCT/CN2016/082122 priority patent/WO2017193398A1/zh
Priority to ES20200054T priority patent/ES2935186T3/es
Priority to CN201680030409.5A priority patent/CN107637143B/zh
Priority to RU2018143936A priority patent/RU2701380C1/ru
Priority to KR1020187036269A priority patent/KR102235543B1/ko
Priority to US16/301,102 priority patent/US10506520B2/en
Priority to EP16901353.9A priority patent/EP3454608B1/en
Priority to BR112018073317-2A priority patent/BR112018073317B1/pt
Priority to EP22188692.2A priority patent/EP4152837B1/en
Priority to JP2018560030A priority patent/JP6710781B2/ja
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to AU2016406586A priority patent/AU2016406586B2/en
Priority to EP20200054.3A priority patent/EP3843466B1/en
Publication of WO2017193398A1 publication Critical patent/WO2017193398A1/zh
Anticipated expiration legal-status Critical
Priority to US16/656,238 priority patent/US10631249B2/en
Priority to US16/842,922 priority patent/US11026179B2/en
Priority to US17/328,106 priority patent/US11419057B2/en
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/06TPC algorithms
    • H04W52/08Closed loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/06TPC algorithms
    • H04W52/10Open loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/143Downlink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/06TPC algorithms
    • H04W52/14Separate analysis of uplink or downlink
    • H04W52/146Uplink power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/18TPC being performed according to specific parameters
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/30Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32TPC of broadcast or control channels
    • H04W52/325Power control of control or pilot channels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0096Indication of changes in allocation
    • H04L5/0098Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04Transmission power control [TPC]
    • H04W52/30Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/34TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/26Network addressing or numbering for mobility support

Definitions

  • Embodiments of the present invention relate to communication technologies, and in particular, to a power control method and apparatus.
  • LTE-A Long Term Evolution-Advance
  • a carrier aggregation technology is introduced to increase the system transmission bandwidth.
  • a user equipment When performing carrier aggregation, a user equipment (User Equipment, UE for short) can usually aggregate a larger number of downlink carriers, and the number of uplink carriers is relatively small.
  • some downlink channel measurements may utilize channel dissimilarity features, such as a precoding matrix index (PMI), to obtain a downlink channel by using an uplink transmission sounding reference symbol (SRS). measuring. Since the downlink carrier aggregation capability of the UE is greater than the uplink carrier aggregation capability, there is no uplink transmission on the time division duplex (TDD) carrier of the UE for downlink transmission. To ensure timely transmission of the SRS, carrier handover is required.
  • TDD time division duplex
  • carrier 1 and carrier 2 are used for downlink transmission.
  • carrier switching is performed, carrier 2 is switched to carrier 3, and carrier 3 is used for transmission.
  • SRS, and the transmit power of the SRS needs to be controlled to ensure that the SRS is correctly received.
  • the parameter setting of the existing SRS power control scheme depends on some related parameters of the Physical Uplink Shared Channel (PUSCH) power control.
  • PUSCH Physical Uplink Shared Channel
  • the UE cannot obtain the PUSCH power on the switched carrier for transmitting the SRS.
  • the relevant parameters of the control therefore, SRS power control cannot be performed, resulting in the SRS not being correctly received.
  • the embodiment of the invention provides a power control method and device, so that the SRS is transmitted on the switched carrier with the optimal transmit power to ensure that the SRS is correctly received.
  • an embodiment of the present invention provides a power control method, including: acquiring a power control parameter of a sounding reference signal SRS, where the power control parameter of the SRS includes the At least one of a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS; determining, according to the power control parameter of the SRS, a transmit power of the SRS on the first carrier.
  • the UE may calculate the transmit power of the SRS on the switched carrier according to the power control parameter of the newly configured SRS, so that the SRS transmits on the switched carrier with the optimal transmit power to ensure that the SRS is correctly received.
  • the first carrier is a carrier that does not transmit a physical uplink shared channel PUSCH.
  • the acquiring the power control parameter of the sounding reference signal SRS includes: receiving power control signaling or cross-carrier power control signaling sent by the base station.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the acquiring the power control parameter of the sounding reference signal SRS includes: acquiring power control parameters of the SRS from the power control signaling or the cross-carrier power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes radio resource control RRC signaling or physical layer signaling.
  • the UE can obtain the power control parameters of the SRS in different manners, and the manner of obtaining the power control parameters of the SRS is flexible and variable, and the operation is simple.
  • the target power parameter value of the SRS is a parameter value obtained based on a preamble initial receiving target power value; or the target power parameter value of the SRS is based on the initial receiving target power of the preamble The value of the parameter obtained from the value and power adjustment value.
  • the obtaining the power control parameter from the power control signaling or the cross-carrier power control signaling includes: controlling, according to the first wireless network temporary identifier RNTI, from the power control
  • the power control parameters of the SRS are parsed in signaling or the cross-carrier power control signaling.
  • the determining, according to the power control parameter of the SRS, the transmit power of the SRS including: according to a maximum transmit power of the user equipment UE, a transmit power adjustment value of the SRS, and the SRS At least one of a transmission bandwidth, a target power parameter value of the SRS, the path loss compensation factor, and a downlink path loss estimation value obtains a transmission power of the SRS.
  • the UE can accurately calculate the transmit power of the SRS and ensure the transmission quality of the SRS.
  • the method before determining the transmit power of the SRS according to the power control parameter of the SRS, the method further includes: determining that the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjustment value.
  • the method before the acquiring the power control parameter of the SRS, the method further includes: acquiring transmission power control TPC information; the TPC information is information that is scrambled by the first wireless network temporary identifier RNTI.
  • the acquiring the power control parameter of the SRS includes: parsing, according to the first RNTI, a closed loop power control parameter value of the SRS from the TPC information.
  • the method further includes: acquiring downlink control information DCI.
  • the acquiring the power control parameter of the SRS includes: acquiring a closed loop power control parameter value of the SRS according to the DCI.
  • the DCI if the DCI is control information acquired on the second carrier, the DCI includes at least a first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier
  • the first carrier is a switched carrier
  • the acquiring the closed loop power control parameter value of the SRS according to the DCI includes: acquiring a closed loop power of the SRS on a carrier corresponding to the first carrier identifier Control parameter values.
  • the acquiring the closed-loop power control parameter value of the SRS according to the DCI includes: obtaining the The closed loop power control parameter value of the SRS.
  • the UE can obtain the closed loop power control parameter value of the SRS in different manners, and define a new DCI format, so that the UE can obtain the complete power of the SRS in the case of a closed loop. Control parameters to ensure the reliability of SRS transmission.
  • the method further includes: at least one of closed loop power control information and a relative adjustment value according to the SRS of the previous subframe.
  • the term determines a closed loop power control parameter value of the SRS.
  • the closed-loop power control information of the SRS of the previous subframe, ⁇ SRS, c1 (iK SRS ) is the relative adjustment value, and if the SRS is a periodic configuration, the K SRS is a subframe period of the SRS, If the SRS is a non-periodic configuration, the iK SRS is the subframe number of the previous subframe.
  • the determining, according to the power control parameter of the SRS, the transmit power of the SRS including: according to a maximum transmit power of the user equipment UE, a transmit power adjustment value of the SRS, and the SRS At least one of a transmission bandwidth, a target power parameter value of the SRS, the path loss compensation factor, a downlink path loss estimate, and a closed loop power control parameter of the SRS obtains a transmit power of the SRS.
  • the UE can accurately calculate the transmit power of the SRS in the closed loop condition, and ensure that the SRS can be correctly received in different situations.
  • an embodiment of the present invention provides a power control method, including: acquiring transmission power of a symbol overlapping portion of a first subframe and a second subframe; and transmitting, by using the first subframe, a sounding reference on a first carrier a subframe of the signal SRS, where the second subframe is a subframe for transmitting an SRS or a physical channel on the second carrier; if the transmission power is greater than a maximum transmission power of the user equipment UE, controlling the transmission power of the transmission signal
  • the transmission signal includes the SRS and/or the physical channel.
  • the method before the controlling the transmit power of the transmission signal, the method further comprises: determining that the SRS is a periodic configuration or a non-periodic configuration.
  • controlling the transmit power of the transmission signal includes: controlling, according to the periodic configuration of the SRS, the transmit power of the transmit signal; or, according to the non-periodic configuration of the SRS , controlling the transmission power of the transmission signal.
  • the controlling the transmit power of the transmission signal includes: discarding the SRS or performing power scaling on the SRS.
  • Controlling includes: discarding the PUSCH or performing power scaling on the PUSCH.
  • the physical channel is a physical uplink shared channel PUSCH, and the PUSCH includes uplink control information UCI; then the transmit power of the transmission signal is controlled.
  • the method includes: discarding the SRS or performing power scaling on the SRS.
  • the physical channel is a physical uplink control channel PUCCH; and the controlling the transmit power of the transmission signal includes: discarding the SRS or Performing power scaling on the SRS; or discarding the PUCCH or performing power scaling on the PUCCH.
  • the physical channel is a physical uplink control channel PUCCH, and the PUCCH includes a hybrid automatic repeat request (HARQ);
  • the transmit power is controlled, including: discarding the SRS or performing power scaling on the SRS.
  • HARQ hybrid automatic repeat request
  • the physical channel is a physical uplink control channel PUCCH, and the PUCCH includes only channel state information CSI; Controlling the power includes: discarding the SRS or performing power scaling on the SRS; or discarding the PUCCH or performing power scaling on the PUCCH.
  • the physical channel is a physical random access channel PRACH, and the PRACH is parallel; the controlling the transmit power of the transmission signal, including: Discarding the SRS or power scaling the SRS.
  • an embodiment of the present invention provides a power control method, where the method includes: acquiring a power control parameter of a sounding reference signal SRS on a first carrier, where the power control parameter of the SRS includes a target power parameter value of the SRS. And at least one of a path loss compensation factor and a closed loop power control parameter value of the SRS; sending, to the user equipment UE, a power control parameter of the SRS, to enable the UE to determine the power control parameter according to the SRS The transmit power of the SRS on the first carrier.
  • the first carrier is a carrier that does not transmit a physical uplink shared channel PUSCH.
  • the power control parameter of the SRS is sent to the user equipment UE, and the power control parameter of the SRS is sent to the UE by using power control signaling or cross-carrier power control signaling.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes radio resource control RRC signaling or physical layer signaling.
  • the target power parameter value of the SRS is a parameter value obtained based on a preamble initial receiving target power value; or the target power parameter value of the SRS is based on the initial receiving target power of the preamble The value of the parameter obtained from the value and power adjustment value.
  • the sending the power control parameter of the SRS to the UE by using power control signaling or cross-carrier power control signaling includes: performing the SRS according to the first wireless network temporary identifier RNTI Power control parameters are scrambled to generate the power control signaling or Trans-carrier power control signaling; sending the power control signaling or the cross-carrier power control signaling to the UE.
  • the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjustment value.
  • the method further includes: transmitting, to the UE, transmission power control TPC information, so that the UE parses a closed loop power control parameter value of the SRS from the TPC information;
  • the TPC information is information scrambled by the first radio network temporary identifier RNTI.
  • the method further includes: sending downlink control information DCI to the UE, so that the UE according to the The DCI acquires a closed loop power control parameter value of the SRS.
  • the DCI is the control information acquired on the second carrier
  • the DCI includes at least a first carrier identifier, where the DCI is used to instruct the UE to acquire the first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier
  • the first carrier is a switched carrier
  • the DCI is used to indicate that the UE acquires the closed-loop power control parameter value of the SRS from the DCI.
  • an embodiment of the present invention provides a power control apparatus, including:
  • An acquiring module configured to acquire a power control parameter of the sounding reference signal SRS, where the power control parameter of the SRS includes at least one of a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS ;
  • a determining module configured to determine, according to the power control parameter of the SRS, a transmit power of the SRS on the first carrier.
  • the first carrier is a carrier that does not transmit a physical uplink shared channel PUSCH.
  • the acquiring module is specifically configured to receive power control sent by the base station. Signaling or cross-carrier power control signaling.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the acquiring module is further configured to acquire power control parameters of the SRS from the power control signaling or the cross-carrier power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes radio resource control RRC signaling or physical layer signaling.
  • the target power parameter value of the SRS is a parameter value obtained based on an initial received target power value of the preamble
  • the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value and the power adjustment value of the preamble.
  • the acquiring module acquires the power control parameter from the power control signaling or the cross-carrier power control signaling, including:
  • the acquiring module parses the power control parameter of the SRS from the power control signaling or the cross-carrier power control signaling according to the first radio network temporary identifier RNTI.
  • the determining module is specifically configured to: according to a maximum transmit power of the user equipment UE, a transmit power adjustment value of the SRS, a transmission bandwidth of the SRS, a target power parameter value of the SRS, At least one of a path loss compensation factor and a downlink path loss estimate obtains a transmit power of the SRS.
  • the determining module is further configured to determine that the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjustment value.
  • the acquiring module is further configured to acquire transmission power control TPC information; the TPC information is information that is scrambled by the first wireless network temporary identifier RNTI.
  • the acquiring module acquires power control parameters of the SRS, including:
  • the acquiring module parses the closed loop power control parameter value of the SRS from the TPC information according to the first RNTI.
  • the power control parameter of the SRS includes a closed loop power control parameter value of the SRS
  • the acquiring module is further configured to acquire downlink control information DCI.
  • the acquiring module acquires power control parameters of the SRS, including:
  • the acquiring module acquires a closed loop power control parameter value of the SRS according to the DCI.
  • the DCI if the DCI is control information acquired on the second carrier, the DCI includes at least a first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier
  • the first carrier is a switched carrier
  • the acquiring module acquires the closed loop power control parameter value of the SRS according to the DCI, including:
  • the acquiring module acquires a closed loop power control parameter value of the SRS on the carrier corresponding to the first carrier identifier.
  • the DCI is control information acquired on the first carrier
  • the closed-loop power control parameter value of the SRS according to the DCI including:
  • the acquiring module acquires a closed loop power control parameter value of the SRS from the DCI.
  • the closed loop power control parameter value of the SRS is a relative adjustment value
  • the determining module is further configured to determine a closed loop power control parameter value of the SRS according to at least one of closed loop power control information and a relative adjustment value of the SRS of the previous subframe.
  • the determining module determines the closed loop power control parameter value of the SRS according to at least one of closed loop power control information and a relative adjustment value of the SRS of the previous subframe, including:
  • the determining module determines, according to the power control parameter of the SRS, the transmit power of the SRS, including:
  • the determining module is configured according to a maximum transmit power of the user equipment UE, a transmit power adjustment value of the SRS, a transmission bandwidth of the SRS, a target power parameter value of the SRS, the path loss compensation factor, and a downlink path loss estimation value. And transmitting, by the at least one of the closed loop power control parameters of the SRS, the transmit power of the SRS.
  • the determining module determines, according to the power control parameter of the SRS, the transmit power of the SRS, including:
  • an embodiment of the present invention provides a power control apparatus, including:
  • An acquiring module configured to acquire transmission power of a symbol overlapping portion of the first subframe and the second subframe, where the first subframe is a subframe that transmits a sounding reference signal SRS on the first carrier, and the second subframe a subframe for transmitting an SRS or a physical channel on a second carrier;
  • a processing module configured to control, if the transmission power is greater than a maximum transmission power of the user equipment UE, the transmission power of the transmission signal, where the transmission signal includes the SRS and/or the physical channel.
  • the processing module is further configured to determine that the SRS is a periodic configuration or a non-periodic configuration.
  • the processing module controls the transmit power of the transmitted signal, including:
  • the processing module controls transmission power of the transmission signal according to the periodic configuration of the SRS
  • the processing module controls transmission power of the transmission signal according to the aperiodic configuration of the SRS.
  • the processing module controls the transmit power of the transmission signal, including:
  • the processing module discards the SRS or performs power scaling on the SRS.
  • the physical channel is a physical uplink shared channel PUSCH, and the PUSCH does not include uplink control information UCI;
  • the processing module then controls the transmit power of the transmitted signal, including:
  • the processing module discards the PUSCH or performs power scaling on the PUSCH.
  • the physical channel is a physical uplink shared channel PUSCH, and the PUSCH includes uplink control information UCI;
  • the processing module then controls the transmit power of the transmitted signal, including:
  • the processing module discards the SRS or performs power scaling on the SRS.
  • the physical channel is a physical uplink control channel PUCCH
  • the processing module then controls the transmit power of the transmitted signal, including:
  • the processing module discards the SRS or performs power scaling on the SRS
  • the processing module discards the PUCCH or performs power scaling on the PUCCH.
  • the physical channel is a physical uplink control channel PUCCH, and the PUCCH includes a hybrid automatic repeat request HARQ;
  • the processing module then controls the transmit power of the transmitted signal, including:
  • the processing module discards the SRS or performs power scaling on the SRS.
  • the physical channel is a physical uplink control channel PUCCH, and the PUCCH includes only channel state information CSI;
  • the processing module then controls the transmit power of the transmitted signal, including:
  • the processing module discards the SRS or performs power scaling on the SRS
  • the processing module discards the PUCCH or performs power scaling on the PUCCH.
  • the physical channel is a physical random access channel PRACH, and the PRACH is parallel;
  • the processing module then controls the transmit power of the transmitted signal, including:
  • the processing module discards the SRS or performs power scaling on the SRS.
  • an embodiment of the present invention provides a power control apparatus, including:
  • An obtaining module configured to acquire a power control parameter of the sounding reference signal SRS on the first carrier, where the power control parameter of the SRS includes a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS At least one of them;
  • a sending module configured to send the power control parameter of the SRS to the user equipment UE, so that the UE determines a transmit power of the SRS on the first carrier according to the power control parameter of the SRS.
  • the first carrier is a carrier that does not transmit a physical uplink shared channel PUSCH.
  • the sending module is specifically configured to send the power control parameter of the SRS to the UE by using power control signaling or cross-carrier power control signaling.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes radio resource control RRC signaling or physical layer signaling.
  • the target power parameter value of the SRS is a parameter value obtained based on an initial received target power value of the preamble
  • the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value and the power adjustment value of the preamble.
  • the sending module sends the power control parameter of the SRS to the UE by using power control signaling or cross-carrier power control signaling, including:
  • the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjustment value.
  • the sending module is further configured to send, to the UE, transmit power control TPC information, so that the UE parses a closed loop power control parameter value of the SRS from the TPC information;
  • the TPC information is information that is scrambled by the first wireless network temporary identifier RNTI.
  • the power control parameter of the SRS includes a closed loop power control parameter value of the SRS
  • the sending module is further configured to send downlink control information DCI to the UE, so that the UE acquires a closed loop power control parameter value of the SRS according to the DCI.
  • the DCI is the control information acquired on the second carrier
  • the DCI includes at least a first carrier identifier, where the DCI is used to instruct the UE to acquire the first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier
  • the first carrier is a switched carrier
  • the DCI is used to indicate that the UE acquires the closed-loop power control parameter value of the SRS from the DCI.
  • FIG. 1 is a schematic diagram of an application scenario of a power control method according to an embodiment of the present disclosure
  • FIG. 2 is a flowchart of a power control method according to Embodiment 1 of the present invention.
  • FIG. 3 is a flowchart of a power control method according to Embodiment 2 of the present invention.
  • FIG. 5 is a flowchart of a power control method according to Embodiment 4 of the present invention.
  • FIG. 6 is a structural diagram of a power control apparatus according to Embodiment 5 of the present invention.
  • FIG. 7 is a structural diagram of a power control apparatus according to Embodiment 6 of the present invention.
  • FIG. 8 is a structural diagram of a power control apparatus according to Embodiment 7 of the present invention.
  • FIG. 9 is a structural diagram of a UE according to Embodiment 8 of the present invention.
  • FIG. 10 is a structural diagram of a base station according to Embodiment 9 of the present invention.
  • FIG. 1 is a schematic diagram of an application scenario of a power control method according to an embodiment of the present invention.
  • the method is applied to a wireless communication system, such as an LTE-A system.
  • the scenario includes a network device 1, a user terminal 2, and a user terminal 3.
  • the power control method provided by the present application is mainly used for data transmission between a network device and a user terminal. It should be noted that other network devices and user terminals may be included in the scenario, and FIG. 1 is only an exemplary description, and is not limited thereto.
  • the user terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to the wireless modem.
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a mobile terminal.
  • RAN Radio Access Network
  • the computer for example, can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with the wireless access network.
  • the network device involved in the embodiments of the present invention may be a base station, or an access point, or may refer to a device in the access network that communicates with the wireless terminal through one or more sectors on the air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station can be in GSM or CDMA
  • the Base Transceiver Station (BTS) may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE, which is not limited in this application.
  • FIG. 2 is a flowchart of a power control method according to Embodiment 1 of the present invention.
  • the execution body of the method is a UE. As shown in FIG. 2, the method includes the following steps:
  • Step 101 Acquire a power control parameter of the SRS, where the power control parameter of the SRS includes at least one of a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS.
  • the UE may obtain the power control parameters of the SRS in different manners.
  • the base station transmits the power control parameters of the pre-configured SRS to the UE by using a carrier for transmitting the SRS before or after the handover; or
  • the base station sends the target power parameter value and the path loss compensation factor of the SRS to the UE through physical layer signaling or control signaling, and then uses the transmission power control (TPC) information to indicate the closed loop power control parameter value of the SRS.
  • TPC transmission power control
  • Step 102 Determine, according to a power control parameter of the SRS, a transmit power of the SRS on the first carrier.
  • the first carrier is a carrier that performs SRS-based carrier switching, and is also called a non-uplink carrier, in order to perform SRS transmission on the carrier.
  • the UE may calculate the transmit power of the SRS on the first carrier according to the power control parameter of the SRS, so that the SRS is transmitted on the first carrier with an appropriate transmit power.
  • the UE acquires a power control parameter of the SRS including at least one of a target power parameter value, a path loss compensation factor, and a closed loop power control parameter value of the SRS, and determines the SRS according to the power control parameter of the SRS.
  • the UE may calculate the transmit power of the SRS on the switched carrier according to the power control parameter of the newly configured SRS, so that the SRS transmits on the switched carrier with the optimal transmit power, ensuring The SRS is received correctly.
  • the first carrier is a carrier that does not send a Physical Uplink Shared Channel (PUSCH). That is, the first carrier is used to transmit the SRS, and the PUSCH is not transmitted.
  • PUSCH Physical Uplink Shared Channel
  • FIG. 3 is a flowchart of a power control method according to Embodiment 2 of the present invention.
  • the method shown in FIG. 3 is a specific implementation process of step 101. As shown in FIG. 3, the method includes the following steps:
  • Step 201 Receive power control signaling or cross-carrier power control signaling sent by the base station; the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the base station may send the power control signaling on the carrier after the handover to the UE, or may indicate to the UE by using the cross-carrier power control signaling.
  • the cross-carrier power control signaling includes receiving, on a pre-switching carrier where the SRS is located, or a carrier of the non-switched carrier, signaling for determining a related power configuration of the SRS transmission on the carrier after the SRS handover, that is,
  • the cross-carrier power control signaling is signaling sent by the base station on the carrier before the handover or the carrier of any non-switched carrier, and the signaling includes the power control parameter of the SRS on the switched carrier.
  • the open loop power control signaling may include a target power parameter value and a path loss compensation factor of the SRS.
  • the closed loop power control signaling may include a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS.
  • the power control signaling or the cross-carrier power control signaling includes Radio Resource Control (RRC) signaling or physical layer signaling.
  • RRC Radio Resource Control
  • Step 202 Acquire power control parameters of the SRS from power control signaling or cross-carrier power control signaling.
  • the UE after receiving the power control signaling or the cross-carrier power control signaling delivered by the base station, the UE parses the power control signaling or the cross-carrier power control signaling to obtain the power control parameters of the SRS.
  • the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value of the preamble; or the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value and the power adjustment value of the preamble.
  • the base station may send the initial received target power value to the UE by using the power control signaling or the cross-carrier power control signaling, and the UE calculates the target power parameter value of the SRS according to the initial received target power value of the preamble.
  • the base station may also add the initial received target power value and the power adjustment value of the preamble to calculate the target power parameter value of the SRS, and then calculate the target power parameter of the SRS by using power control signaling or cross-carrier power control signaling.
  • the value is sent to the UE.
  • the power adjustment value may also be obtained through a specially defined response message of a Random Access Channel (RACH).
  • RACH Random Access Channel
  • the power adjustment value is also referred to as a power offset or power offset.
  • the obtaining the power control parameter from the power control signaling or the cross-carrier power control signaling includes: according to the first wireless network temporary identifier (Radio Network Tempory Identity, referred to as RNTI), the power control parameters of the SRS are parsed from the power control signaling or the cross-carrier power control signaling.
  • RNTI Radio Network Tempory Identity
  • the first RNTI is different from the existing TPC-RNTI in the prior art, and the first RNTI is the RNTI redefined in the present application, and the first RNTI may be named TPC-SRS-RNTI, the first RNTI. And used to scramble or mask the power control parameters of the SRS, and carry the scrambled parameters to the UE in the physical layer signaling.
  • the UE receives the power control signaling or the cross-carrier power control signaling sent by the base station, and obtains the power control parameter of the SRS from the power control signaling or the cross-carrier power control signaling, and the base station may use the RRC.
  • Signaling or MAC signaling or physical layer signaling indicates the power control parameters of the SRS to the UE, and the power control parameters of the SRS can be scrambled by the newly defined RNTI, and the base station controls the power of the SRS in different manners.
  • the parameters are indicated to the UE, and the method is flexible and easy to operate.
  • determining a transmit power of the SRS according to the power control parameter of the SRS including: a maximum transmit power of the user equipment UE, a transmit power adjustment value of the SRS, a transmission bandwidth of the SRS, a target power parameter value of the SRS, and a path loss compensation factor. And transmitting, by at least one of the downlink path loss estimates, the transmit power of the SRS.
  • the method before determining the transmit power of the SRS according to the power control parameter of the SRS, the method further includes: determining that the SRS is a periodic configuration or a non-periodic configuration.
  • the UE may determine whether the SRS is configured periodically or aperiodically, and then determine the transmit power of the SRS according to the periodic configuration feature of the SRS and the power control parameter of the SRS. Ensure that the SRS is properly received in all situations.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjustment value.
  • the closed loop power control parameter value of the SRS is an absolute value, and the absolute value can be directly used to calculate the transmit power of the SRS. If the closed loop power control parameter value of the SRS is a relative adjustment value, the first adjustment value needs to be calculated according to the relative adjustment value.
  • the closed loop power control parameter value of the SRS calculates the transmit power of the SRS using the closed loop power control parameter value of the SRS obtained by the calculation.
  • the method further includes: determining, according to at least one of the closed loop power control information and the relative adjustment value of the SRS of the previous subframe, a closed loop power control parameter of the SRS. value.
  • determining the transmit power of the SRS according to the power control parameter of the SRS including: according to the maximum transmit power of the user equipment UE, the transmit power adjustment value of the SRS, the transmission bandwidth of the SRS, the target power parameter value of the SRS, the path loss compensation factor, At least one of the downlink path loss estimate and the closed loop power control parameter of the SRS obtains the transmit power of the SRS.
  • the method before acquiring the power control parameter of the SRS, the method further includes: acquiring transmission power control TPC information; the TPC information is information that is scrambled or masked by the first RNTI.
  • acquiring the power control parameter of the SRS includes: parsing the closed loop power control parameter value of the SRS from the TPC information according to the first RNTI.
  • the closed loop power control parameter value of the SRS may be included in the TPC information scrambled by the first RNTI, and the first RNTI is previously indicated to the UE, and the UE may descramble the TPC information according to the first RNTI. , obtain the closed loop power control parameter value of the SRS.
  • the method further includes: obtaining downlink control information (Downlink Control Information, DCI for short) before acquiring the power control parameter of the SRS.
  • DCI Downlink Control Information
  • acquiring the power control parameter of the SRS includes: acquiring a closed loop power control parameter value of the SRS according to the DCI.
  • DCIs of different formats can be defined, as follows:
  • the first DCI format if the DCI is the control information acquired on the second carrier, the DCI includes at least the first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier, and the first carrier is a carrier after handover.
  • acquiring the closed loop power control parameter value of the SRS according to the DCI includes: acquiring a closed loop power control parameter value of the SRS on the carrier corresponding to the first carrier identifier.
  • the DCI acquired on the carrier before the handover needs to include at least the identifier of the switched carrier, so that the UE acquires the SRS on the carrier corresponding to the carrier identifier according to the first carrier identifier. Closed loop power control parameter value.
  • the second DCI format is: if the DCI is the control information acquired on the first carrier, the closed loop power control parameter value of the SRS is obtained according to the DCI, and the closed loop power control parameter value of the SRS is obtained from the DCI.
  • the closed loop power control parameter value of the SRS in the new DCI format is directly applied to perform SRS transmission power control.
  • FIG. 4 is a flowchart of a power control method according to Embodiment 3 of the present invention.
  • the SRS-based carrier switching is triggered, if the symbols of two subframes overlap, and the transmission power of the overlapping portion exceeds the maximum of the UE. How to perform power control when transmitting power. As shown in Figure 4, the method includes the following steps:
  • Step 301 Acquire transmission power of a symbol overlapping portion of the first subframe and the second subframe.
  • the first subframe is a subframe that transmits the sounding reference signal SRS on the first carrier
  • the second subframe is on the second carrier.
  • the symbol on the subframe for transmitting the sounding reference signal SRS on the first carrier overlaps with the symbol of the subframe for transmitting the SRS or the physical channel on the second carrier, the symbol needs to be calculated.
  • the transmission power of the overlapping portion For example, when the UE is configured with a Timing Advance Group (TAG), if a subframe i on a hypothetical serving carrier/cell in one TAG, and a symbol on the subframe i used by the UE to transmit the SRS The transmission power of the symbol overlapping portion is calculated when overlapping with the symbols on the subframe i or the subframe i+1 for transmitting the PUCCH on the other serving carrier/cell.
  • TAG Timing Advance Group
  • Step 302 If the transmission power is greater than the maximum transmission power of the UE, control the transmission power of the transmission signal, where the transmission signal includes an SRS and/or a physical channel.
  • the transmission power of the transmission signal is controlled. For example, if the transmission power is greater than the maximum transmission power of the UE, the partial transmission signal is appropriately discarded, or the transmission is performed. The signal is power scaled.
  • the UE acquires the transmission power of the first subframe in which the sounding reference signal SRS is transmitted on the first carrier and the symbol overlap portion of the second subframe in which the SRS or the physical channel is transmitted on the second carrier, If the transmission power is greater than the maximum transmission power of the UE, the transmission power of the transmission signal is controlled, so that the transmission signal is transmitted at an appropriate power to ensure the transmission efficiency of the transmission signal.
  • the method before controlling the transmit power of the transmission signal, the method further includes: determining that the SRS is a periodic configuration or a non-periodic configuration.
  • controlling the transmit power of the transmission signal includes: controlling the transmit power of the transmit signal according to the periodic configuration of the SRS; or controlling the transmit power of the transmit signal according to the aperiodic configuration of the SRS.
  • the discarded partial transmission signal or the partial transmission signal may be selected for power scaling according to the periodic characteristics of the SRS.
  • the transmit power of the transmission signal is controlled, including: discarding the SRS or performing power scaling on the SRS.
  • the physical channel is a physical uplink shared channel PUSCH
  • the PUSCH does not include the uplink control information UCI; and the transmission power of the transmission signal is controlled, including: discarding the PUSCH or performing power scaling on the PUSCH.
  • the physical channel is the physical uplink shared channel PUSCH, and the PUSCH includes the uplink control information UCI; and the transmit power of the transmission signal is controlled, including: discarding the SRS or performing power scaling on the SRS.
  • the physical channel is a physical uplink control channel (PUCCH), and the transmit power of the transmission signal is controlled, including: discarding the SRS or performing power scaling on the SRS; or discarding the PUCCH or the pair The PUCCH performs power scaling.
  • PUCCH physical uplink control channel
  • the physical channel is a physical uplink control channel PUCCH
  • the PUCCH includes a hybrid automatic repeat request (HARQ)
  • the transmit power of the transmission signal is controlled, including: discarding the SRS or the SRS Perform power scaling.
  • HARQ hybrid automatic repeat request
  • the transmit power of the transmission signal is controlled, including: discarding the SRS or the SRS. Perform power scaling; either, discard the PUCCH or power scale the PUCCH.
  • CSI Channel State Information
  • the SRS is a non-periodic configuration
  • the physical channel is a PUCCH
  • the PUCCH includes only the CSI, and/or, when the PUCCH does not include a Hybrid Automatic Repeat ReQuest (HARQ), the transmission signal is transmitted.
  • the transmit power is controlled, including: discarding the SRS or performing power scaling on the SRS; or discarding the PUCCH or performing power scaling on the PUCCH.
  • the physical channel is a physical random access channel (PRACH), and the PRACH is parallel; the transmit power of the transmission signal is controlled, including: discarding the SRS or performing power scaling on the SRS.
  • PRACH physical random access channel
  • the first case is a first case:
  • the UE When the UE is configured with multiple TAGs, the UE is used to transmit the symbols on the subframe i of the SRS and the subframes i/ on the other serving carrier/cell for the subframe i on one hypothetical serving carrier/cell in one TAG.
  • subframe i+1 is used for symbol overlap of PUCCH/PUSCH, if the transmission power of the symbol overlapping portion exceeds the maximum transmission power of the UE, it is divided into the following cases:
  • the UE discards the SRS transmission or performs power scaling on the SRS transmission.
  • the UE discards the PUSCH.
  • the power is transmitted or the PUSCH transmission is power scaled, or the UE discards the SRS transmission or power scales the SRS transmission.
  • the UE discards the SRS transmission or performs power scaling on the SRS transmission.
  • the UE discards the SRS transmission or performs power scaling on the SRS transmission, or the UE discards the PUSCH transmission or Power scaling of PUSCH transmissions.
  • the SRS is configured aperiodically, if the transmission power in any overlapping symbol portion exceeds the maximum transmission power of the UE, there is a PUCCH and the PUCCH includes a HARQ Hybrid Automatic Repeat ReQuest (HARQ), The UE discards the SRS transmission or power scales the SRS transmission.
  • HARQ Hybrid Automatic Repeat ReQuest
  • the second case is a first case
  • a symbol on subframe i for performing SRS transmission on one assumed service carrier/cell, and another service carrier/cell for transmitting SRS When the symbols on subframe i overlap, and/or overlap with the symbols on subframe i or subframe i+1 for PUCCH/PUSCH transmission on other serving carriers/cells, if the symbol overlap portion exceeds the entire rate.
  • the UE discards the SRS transmission or performs power scaling on the SRS transmission.
  • the SRS is configured aperiodically, if the transmission power in any overlapping symbol portion is exceeded
  • the UE discards the PUSCH transmission or performs power scaling on the PUSCH transmission, or the UE discards the SRS transmission or performs power scaling on the SRS transmission.
  • the UE discards the SRS transmission or SRS transmission for power scaling.
  • the UE discards the SRS transmission or performs power scaling on the SRS transmission, or the UE discards the PUSCH transmission or Power scaling of PUSCH transmissions.
  • the UE discards the SRS transmission or performs power scaling on the SRS transmission.
  • the UE discards or SRS transmission or PUCCH; or performs SRS transmission Power scaling or power scaling of the PUCCH.
  • the third case is a first case.
  • the UE When the UE is configured with multiple TAGs, the UE will transmit a Physical Random Access Channel (PRACH) on a secondary serving carrier/cell, the PRACH being parallel to one of the different serving carriers/cells for SRS transmission.
  • PRACH Physical Random Access Channel
  • the symbol on the subframe is transmitted, if the transmission power of the overlapping portion of the symbol exceeds the maximum transmission power of the UE, it is divided into the following cases:
  • the UE discards the SRS transmission or performs power scaling on the SRS transmission.
  • the UE discards the SRS transmission or performs power scaling on the SRS transmission.
  • FIG. 5 is a flowchart of a power control method according to Embodiment 4 of the present invention.
  • the execution body of the method is a base station. As shown in FIG. 5, the method includes the following steps:
  • Step 401 Obtain a power control parameter of the SRS on the first carrier, where the power control parameter of the SRS includes at least one of a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS.
  • the power control parameters of the SRS are specifically configured.
  • Step 402 Send the power control parameter of the SRS to the user equipment UE, so that the UE determines the transmit power of the SRS on the first carrier according to the power control parameter of the SRS.
  • the base station may send the power control parameters of the SRS to the UE in different manners. For example, the base station transmits the power control parameters of the pre-configured SRS to the UE by using the switched carrier for transmitting the SRS; or The base station sends the target power parameter value and the path loss compensation factor of the SRS to the UE through physical layer signaling or control signaling, and then uses the transmission power control (TPC) information to indicate the closed loop power control parameter value of the SRS. To the UE; or otherwise transmit each value in the power control parameters of the SRS to the UE. The UE may calculate the transmit power of the SRS on the first carrier according to the power control parameter of the SRS, so that the SRS is transmitted on the first carrier with an appropriate transmit power.
  • TPC transmission power control
  • the base station acquires the power control parameter of the SRS including the target power parameter value, the path loss compensation factor, and the closed loop power control parameter value of the SRS on the first carrier, and the SRS
  • the power control parameter is sent to the user equipment UE, so that the UE determines the transmit power of the SRS on the first carrier according to the power control parameter of the SRS, so that the UE can calculate the SRS on the switched carrier according to the power control parameter of the newly configured SRS.
  • the transmit power is such that the SRS transmits on the switched carrier with the optimal transmit power to ensure that the SRS is correctly received.
  • the first carrier is a carrier that does not transmit a PUSCH.
  • the sending the power control parameter of the SRS to the user equipment UE includes: transmitting power control parameters of the SRS to the UE by using power control signaling or cross-carrier power control signaling.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes RRC signaling or physical layer signaling.
  • the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value of the preamble; or the target power parameter value of the SRS is based on the initial received target power value of the preamble. And the parameter value obtained from the power adjustment value.
  • the power control parameter of the SRS is sent to the UE by using power control signaling or cross-carrier power control signaling, including: scrambling the power control parameter of the SRS according to the first RNTI, to generate power control signaling or cross-carrier Power control signaling; transmitting power control signaling or cross-carrier power control signaling to the UE.
  • the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjustment value.
  • the method further includes: transmitting TPC information to the UE, so that the UE parses out the closed loop power control parameter value of the SRS from the TPC information; the TPC information is information that is scrambled by the first wireless network temporary identifier RNTI.
  • the method further includes: sending downlink control information DCI to the UE, so that the UE acquires the closed loop power control parameter value of the SRS according to the DCI.
  • the DCI is the control information acquired on the second carrier
  • the DCI includes at least a first carrier identifier, where the DCI is used to indicate that the UE acquires a closed loop power control parameter value of the SRS on the carrier corresponding to the first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier, and the first carrier is a carrier after handover.
  • the DCI is used to indicate that the UE obtains the closed loop power control parameter value of the SRS from the DCI.
  • the power control method provided in this embodiment is performed by the base station, and corresponds to the power control method on the UE side.
  • the implementation principle and detailed description of the specific technical features can refer to the power of the UE side according to the embodiments in FIG. 2 to FIG. 4. Control method, no longer repeat here.
  • FIG. 6 is a structural diagram of a power control apparatus according to Embodiment 5 of the present invention.
  • the apparatus includes an acquisition module 11 and a determination module 12.
  • the obtaining module 11 is configured to acquire a power control parameter of the sounding reference signal SRS, where the power control parameter of the SRS includes at least one of a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS;
  • the determining module 12 is configured to: The transmit power of the SRS on the first carrier is determined according to the power control parameter of the SRS.
  • the device of this embodiment can be used to implement the technical solution of the method embodiment shown in FIG. 2, in fact The present principle and technical effects are similar and will not be described here.
  • the first carrier is a carrier that does not send the physical uplink shared channel PUSCH.
  • the obtaining module 11 is specifically configured to receive power control signaling or cross-carrier power control signaling sent by the base station.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the obtaining module 11 is further configured to obtain power control parameters of the SRS from the power control signaling or the cross-carrier power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes radio resource control RRC signaling or physical layer signaling.
  • the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value of the preamble; or the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value and the power adjustment value of the preamble.
  • the obtaining module 11 obtains the power control parameter from the power control signaling or the cross-carrier power control signaling, including: the obtaining module 11 according to the first wireless network temporary identifier RNTI, the power control signaling or the cross-carrier power control signal.
  • the power control parameters of the SRS are parsed out in the order.
  • the determining module 12 is specifically configured to: according to a maximum transmit power of the user equipment UE, a transmit power adjustment value of the SRS, a transmission bandwidth of the SRS, a target power parameter value of the SRS, a path loss compensation factor, and a downlink path loss estimation value. At least one of the transmission powers of the SRS is obtained.
  • the determining module 12 is further configured to determine whether the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjusted value.
  • the obtaining module 11 is further configured to acquire transmission power control TPC information, where the TPC information is information that is scrambled by the first wireless network temporary identifier RNTI.
  • the obtaining module 11 acquires power control parameters of the SRS, including: acquiring the root module 11 According to the first RNTI, the closed loop power control parameter value of the SRS is parsed from the TPC information.
  • the acquiring module 11 is further configured to obtain the downlink control information DCI.
  • the acquiring module 11 acquires the power control parameter of the SRS, where the acquiring module 11 acquires the closed loop power control parameter value of the SRS according to the DCI.
  • the DCI includes at least the first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier
  • the first carrier is a switched carrier
  • the acquiring module 11 acquires the closed-loop power control parameter value of the SRS according to the DCI, and the acquiring module 11 acquires the closed-loop power control parameter value of the SRS on the carrier corresponding to the first carrier identifier.
  • the acquiring module 11 acquires the closed-loop power control parameter value of the SRS according to the DCI, and the acquiring module 11 obtains the closed-loop power control parameter value of the SRS from the DCI.
  • the determining module 12 is further configured to determine a closed loop power of the SRS according to at least one of closed loop power control information and a relative adjustment value of the SRS of the previous subframe. Control parameter values.
  • the closed-loop power control information of the SRS of the subframe, ⁇ SRS, c1 (iK SRS ) is a relative adjustment value. If the SRS is a periodic configuration, the K SRS is a subframe period of the SRS, and if the SRS is a non-periodic configuration, the iK The SRS is the subframe number of the previous subframe.
  • the determining module 12 determines the transmit power of the SRS according to the power control parameter of the SRS, including: determining, by the module 12, the maximum transmit power of the user equipment, the transmit power adjustment value of the SRS, the transmission bandwidth of the SRS, and the target power parameter of the SRS.
  • the transmit power of the SRS is obtained by at least one of a value, a path loss compensation factor, a downlink path loss estimate, and a closed loop power control parameter of the SRS.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 2 or 3.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 7 is a structural diagram of a power control apparatus according to Embodiment 6 of the present invention.
  • the apparatus includes an acquisition module 21 and a processing module 22.
  • the acquiring module 21 is configured to obtain transmission power of the symbol overlapping portion of the first subframe and the second subframe; the first subframe is a subframe that transmits the sounding reference signal SRS on the first carrier, and the second subframe is in the second frame.
  • the SRS or the subframe of the physical channel is transmitted on the carrier;
  • the processing module 22 is configured to control, if the transmission power is greater than the maximum transmission power of the user equipment UE, the transmission power of the transmission signal, where the transmission signal includes an SRS and/or a physical channel.
  • the processing module 22 is further configured to determine whether the SRS is a periodic configuration or a non-periodic configuration.
  • the processing module 22 controls the transmit power of the transmission signal, and the processing module 22 controls the transmit power of the transmit signal according to the periodic configuration of the SRS. Alternatively, the processing module 22 performs the aperiodic configuration according to the SRS. The transmit power of the transmitted signal is controlled.
  • the processing module 22 controls the transmit power of the transmission signal, including: the processing module 22 discards the SRS or performs power scaling on the SRS.
  • the processing module 22 controls the transmit power of the transmission signal, including: the processing module 22 discards the PUSCH Or power scaling the PUSCH.
  • the processing module 22 controls the transmit power of the transmission signal, including: the processing module 22 discards the SRS or Power scaling the SRS.
  • the physical channel is a physical uplink control channel (PUCCH)
  • the processing module 22 controls the transmit power of the transmission signal, including: the processing module 22 discards the SRS or performs power scaling on the SRS; Alternatively, processing module 22 discards the PUCCH or power scales the PUCCH.
  • PUCCH physical uplink control channel
  • the physical channel is a physical uplink control channel.
  • PUCCH Physical Uplink control channel
  • the PUCCH includes hybrid automatic repeat request HARQ; then the processing module 22 controls the transmit power of the transmission signal, including: the processing module 22 discards the SRS or performs power scaling on the SRS.
  • the processing module 22 controls the transmit power of the transmission signal, including: the processing module 22 The SRS is discarded or power scaled for the SRS; or, the processing module 22 discards the PUCCH or power scales the PUCCH.
  • the physical channel is a physical uplink control channel (PUCCH)
  • the PUCCH includes only the channel state information CSI
  • the processing module 22 controls the transmit power of the transmission signal, including: the processing module 22 discards the SRS or performs the SRS Power scaling.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 8 is a structural diagram of a power control apparatus according to Embodiment 7 of the present invention.
  • the apparatus includes an acquisition module 31 and a transmission module 32.
  • the obtaining module 31 is configured to acquire a power control parameter of the sounding reference signal SRS on the first carrier, where the power control parameter of the SRS includes at least one of a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS;
  • the module 32 is configured to send the power control parameter of the SRS to the user equipment UE, so that the UE determines the transmit power of the SRS on the first carrier according to the power control parameter of the SRS.
  • the first carrier is a carrier that does not send the physical uplink shared channel PUSCH.
  • the sending module is specifically configured to send, by using power control signaling or cross-carrier power control signaling, a power control parameter of the SRS to the UE.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes radio resource control RRC signaling or physical layer signaling.
  • the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value of the preamble; or the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value and the power adjustment value of the preamble.
  • the sending module sends the power control parameter of the SRS to the UE by using the power control signaling or the cross-carrier power control signaling, where the sending module performs the scrambling on the power control parameter of the SRS according to the first wireless network temporary identifier RNTI.
  • the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjusted value.
  • the sending module is further configured to send the transmit power control TPC information to the UE, so that the UE parses the closed loop power control parameter value of the SRS from the TPC information;
  • the TPC information is information that is scrambled by the first wireless network temporary identifier RNTI .
  • the sending module is further configured to send the downlink control information DCI to the UE, so that the UE acquires the closed loop power control parameter value of the SRS according to the DCI.
  • the DCI is the control information acquired on the second carrier
  • the DCI includes at least a first carrier identifier, where the DCI is used to indicate that the UE acquires a closed loop power control parameter value of the SRS on the carrier corresponding to the first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier
  • the first carrier is a switched carrier
  • the DCI is used to indicate that the UE obtains the closed loop power control parameter value of the SRS from the DCI.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 5, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 9 is a structural diagram of a UE according to Embodiment 8 of the present invention.
  • the UE may include a processor 401 and a memory 402.
  • the apparatus can also include a transmit interface 403 and a receive interface 404. Transmit interface 403 and receive interface 404 can be coupled to processor 401.
  • the sending interface 403 is configured to send data or information
  • the sending interface 403 can be a wireless transmitting device
  • the receiving interface 404 can be used to receive data or information
  • the receiving interface 404 can be a wireless receiving device
  • the memory 402 stores execution instructions when the device is running.
  • the processor 401 communicates with the memory 402, and the processor 401 calls an execution instruction in the memory 402 for performing the following operations:
  • the transmit power of the SRS on the first carrier is determined according to the power control parameter of the SRS.
  • the first carrier is a carrier that does not send the physical uplink shared channel PUSCH.
  • the processor 401 acquires power control parameters of the sounding reference signal SRS, including: the processor 401 receives power control signaling or cross-carrier power control signaling sent by the base station.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the processor 401 acquires the power control parameter of the sounding reference signal SRS, where the processor 401 obtains the power control parameter of the SRS from the power control signaling or the cross-carrier power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes radio resource control RRC signaling or physical layer signaling.
  • the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value of the preamble; or the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value and the power adjustment value of the preamble.
  • the processor 401 obtains power control parameters from the power control signaling or the cross-carrier power control signaling, including: the processor 401, according to the first wireless network temporary identifier, the RNTI, the power control signaling, or the cross-carrier power control signal.
  • the power control parameters of the SRS are parsed out in the order.
  • the processor 401 determines, according to the power control parameter of the SRS, the transmit power of the SRS, where the processor 401: according to the maximum transmit power of the user equipment UE, the transmit power adjustment value of the SRS, the transmission bandwidth of the SRS, and the target power parameter of the SRS. At least one of a value, a path loss compensation factor, and a downlink path loss estimate obtains a transmit power of the SRS.
  • the processor 401 is further configured to determine whether the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjusted value.
  • the processor 401 is further configured to obtain transmission power control TPC information; the TPC information is The information that the RNTI scrambles is temporarily identified by the first wireless network.
  • the processor 401 is further configured to parse the closed loop power control parameter value of the SRS from the TPC information according to the first RNTI.
  • the processor 401 is further configured to obtain the downlink control information DCI.
  • the processor 401 acquires power control parameters of the SRS, including: the processor 401 acquires a closed loop power control parameter value of the SRS according to the DCI.
  • the DCI includes at least the first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier
  • the first carrier is a switched carrier
  • the processor 401 acquires the closed-loop power control parameter value of the SRS according to the DCI, where the processor 401 acquires a closed-loop power control parameter value of the SRS on the carrier corresponding to the first carrier identifier.
  • the processor 401 acquires the closed-loop power control parameter value of the SRS according to the DCI, where the processor 401 obtains the closed-loop power control parameter value of the SRS from the DCI.
  • the processor 401 is further configured to determine, according to at least one of the closed loop power control information and the relative adjustment value of the SRS of the previous subframe, the closed loop power control of the SRS. Parameter value.
  • the closed-loop power control information of the SRS of the subframe, ⁇ SRS, c1 (iK SRS ) is a relative adjustment value. If the SRS is a periodic configuration, the K SRS is a subframe period of the SRS, and if the SRS is a non-periodic configuration, the iK The SRS is the subframe number of the previous subframe.
  • the processor 401 determines, according to the power control parameter of the SRS, the transmit power of the SRS, where the processor 401: according to the maximum transmit power of the user equipment UE, the transmit power adjustment value of the SRS, the transmission bandwidth of the SRS, and the target power parameter of the SRS.
  • the transmit power of the SRS is obtained by at least one of a value, a path loss compensation factor, a downlink path loss estimate, and a closed loop power control parameter of the SRS.
  • the UE in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 2 or 3.
  • the implementation principle and technical effects are similar, and details are not described herein again.
  • the embodiment of the present application further provides a UE.
  • the structure of the UE is the same as that of the UE shown in FIG. 9.
  • the processor communicates with the memory, and the processor calls an execution instruction in the memory to execute the following. operating:
  • the first subframe is a subframe for transmitting the sounding reference signal SRS on the first carrier
  • the second subframe is for transmitting the SRS on the second carrier or a subframe of a physical channel
  • the transmission power of the transmission signal is controlled, and the transmission signal includes an SRS and/or a physical channel.
  • the processor is further configured to determine whether the SRS is a periodic configuration or a non-periodic configuration.
  • the processor controls the transmit power of the transmission signal, including: the processor controls the transmit power of the transmit signal according to the periodic configuration of the SRS; or the processor transmits the signal according to the non-periodic configuration of the SRS.
  • the transmit power is controlled.
  • the processor controls the transmit power of the transmission signal, including: the processor discards the SRS or performs power scaling on the SRS.
  • the processor controls the transmit power of the transmission signal, including: the processor discards the PUSCH or the pair The PUSCH performs power scaling.
  • the physical channel is a physical uplink shared channel PUSCH, and the PUSCH includes uplink control information UCI; the processor controls the transmit power of the transmission signal, including: the processor discards the SRS or the SRS Perform power scaling.
  • the physical channel is a physical uplink control channel.
  • the processor controls the transmit power of the transmission signal, including: the processor discards the SRS or performs power scaling on the SRS; or the processor discards the PUCCH or performs power scaling on the PUCCH.
  • the processor controls the transmit power of the transmission signal, including: the processor discards SRS or power scaling of SRS.
  • HARQ hybrid automatic repeat request
  • the physical channel is a physical uplink control channel PUCCH, and the PUCCH includes only the channel state information CSI; the processor controls the transmit power of the transmission signal, including: the processor discards the SRS Or power scaling the SRS; or the processor discards the PUCCH or performs power scaling on the PUCCH.
  • the processor controls the transmit power of the transmission signal, including: the processor discards the SRS or performs power scaling on the SRS. .
  • the UE in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 4, and the implementation principle and technical effects are similar, and details are not described herein again.
  • FIG. 10 is a structural diagram of a base station according to Embodiment 9 of the present invention.
  • the base station includes a processor 501 and a transmitter 502.
  • the processor 501 is configured to acquire a power control parameter of the sounding reference signal SRS on the first carrier, where the power control parameter of the SRS includes at least one of a target power parameter value of the SRS, a path loss compensation factor, and a closed loop power control parameter value of the SRS;
  • the 502 is configured to send the power control parameter of the SRS to the user equipment UE, so that the UE determines the transmit power of the SRS on the first carrier according to the power control parameter of the SRS.
  • the first carrier is a carrier that does not send the physical uplink shared channel PUSCH.
  • the transmitter 502 sends the power control parameter of the SRS to the user equipment UE, where the transmitter 502 sends the power control parameter of the SRS to the UE by using power control signaling or cross-carrier power control signaling.
  • the power control signaling includes open loop power control signaling and/or closed loop power control signaling.
  • the power control signaling or the cross-carrier power control signaling includes radio resource control RRC signaling or physical layer signaling.
  • the target power parameter value of the SRS is a parameter value obtained based on the initial received target power value of the preamble; or the target power parameter value of the SRS is based on the initial received target power value of the preamble. And the parameter value obtained from the power adjustment value.
  • the transmitter 502 sends the power control parameter of the SRS to the UE by using power control signaling or cross-carrier power control signaling, including: the transmitter 502 scrambles the power control parameter of the SRS according to the RNTI to generate power control. Signaling or cross-carrier power control signaling; transmitting power control signaling or cross-carrier power control signaling to the UE.
  • the SRS is a periodic configuration or a non-periodic configuration.
  • the closed loop power control parameter value of the SRS is an absolute value or a relative adjusted value.
  • the transmitter 502 is further configured to send the transmit power control TPC information to the UE, so that the UE parses the closed loop power control parameter value of the SRS from the TPC information; the TPC information is scrambled by the first wireless network temporary identifier RNTI information.
  • the transmitter 502 is further configured to send the downlink control information DCI to the UE, so that the UE acquires the closed loop power control parameter value of the SRS according to the DCI.
  • the DCI is the control information acquired on the second carrier
  • the DCI includes at least a first carrier identifier, where the DCI is used to indicate that the UE acquires a closed loop power control parameter value of the SRS on the carrier corresponding to the first carrier identifier.
  • the second carrier is a carrier before handover or any carrier other than the switched carrier
  • the first carrier is a switched carrier
  • the DCI is used to indicate that the UE obtains the closed loop power control parameter value of the SRS from the DCI.
  • the base station may further include a memory 503 and a receiver 504.
  • Memory 503 is used to store instructions and data
  • receiver 504 is used to receive data or information.
  • the device in this embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 5, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the aforementioned program can be stored in a computer readable storage medium.
  • the steps of the foregoing method embodiments are performed; and the foregoing storage medium includes: Read-Only Memory (ROM), Random Access Memory (RAM), and Magnetic Various discs or CDs, etc.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • CDs Compact Various discs or CDs

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Abstract

本发明实施例提供一种功率控制方法和装置,该方法包括:获取探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率,使得SRS以最优的发射功率在切换后的载波上进行传输,保证SRS被正确接收。

Description

功率控制方法和装置 技术领域
本发明实施例涉及通信技术,尤其涉及一种功率控制方法和装置。
背景技术
在长期演进升级(Long Term Evolution-Advance,简称LTE-A)系统中,为了增加系统传输带宽引入了载波聚合技术。
进行载波聚合时,用户设备(User Equipment,简称UE)通常能够聚合较多数量的下行载波,而上行载波的数量相对很小。通常根据信道互异性,对一些下行信道测量会利用信道互异性特征,如预编码矩阵指数(precoding matrix index,简称PMI),通过上行传输探测参考信号(Sounding Reference Symbol,简称SRS)去获取下行信道测量。由于UE的下行载波聚合能力大于上行载波聚合能力,导致该UE一些进行下行传输的时分双工(time division duplex,简称TDD)载波上没有上行传输,为了保证SRS的及时传输,需要进行载波切换。例如,在第1子帧上,采用载波1和载波2进行下行传输,当在第2子帧上需要进行SRS传输时,则进行载波切换,将载波2切换为载波3,用载波3来传输SRS,并且,需要对SRS的发射功率进行控制,以保证SRS被正确接收。
现有SRS功率控制方案的参数设置依赖于物理上行共享信道(Physical Uplink Shared Channel,简称PUSCH)功率控制的一些相关参数,但是,UE在切换后的用于传输SRS的载波上无法获取到PUSCH功率控制的相关参数,因此,无法进行SRS功率控制,导致SRS无法被正确接收。
发明内容
本发明实施例提供一种功率控制方法和装置,使得SRS以最优的发射功率在切换后的载波上进行传输,保证SRS被正确接收。
第一方面,本发明实施例提供一种功率控制方法,其特征在于,包括:获取探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述 SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率。UE可以根据新配置的SRS的功率控制参数计算在切换后的载波上SRS的发射功率,使得SRS以最优的发射功率在切换后的载波上进行传输,保证SRS被正确接收。
在一种可能的设计中,所述第一载波为不发送物理上行共享信道PUSCH的载波。
在一种可能的设计中,所述获取探测参考信号SRS的功率控制参数,包括:接收基站发送的功率控制信令或跨载波功率控制信令。
在一种可能的设计中,所述功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
在一种可能的设计中,所述获取探测参考信号SRS的功率控制参数,包括:从所述功率控制信令或所述跨载波功率控制信令中获取所述SRS的功率控制参数。
在一种可能的设计中,所述功率控制信令或所述跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
通过上述可能的设计方式,UE可以通过不同的方式来获取SRS的功率控制参数,获取SRS的功率控制参数的方式灵活多变,而且操作简单。
在一种可能的设计中,所述SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;或者,所述SRS的目标功率参数值为基于所述前导码初始接收目标功率值和功率调整值获得的参数值。
在一种可能的设计中,所述从所述功率控制信令或所述跨载波功率控制信令中获取所述功率控制参数,包括:根据第一无线网络临时标识RNTI,从所述功率控制信令或所述跨载波功率控制信令中解析出所述SRS的功率控制参数。
在一种可能的设计中,所述根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:根据用户设备UE的最大发射功率、所述SRS的发射功率调整值、所述SRS的传输带宽、所述SRS的目标功率参数值、所述路径损耗补偿因子、下行路径损耗估计值中的至少一项获得所述SRS的发射功率。
在一种可能的设计中,所述根据所述SRS的功率控制参数确定所述SRS 的发射功率,包括:根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,j=0或1或2,αSRS,c1(j)为所述路径损耗补偿因子,PLSRS,c1为下行路径损耗估计值。
通过上述可能的实现方式,UE可以精确的计算出SRS的发射功率,保证SRS的传输质量。
在一种可能的设计中,所述根据所述SRS的功率控制参数确定所述SRS的发射功率之前,所述方法还包括:确定所述SRS是周期性配置或非周期性配置。
在一种可能的设计中,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值,所述SRS的闭环功率控制参数值为绝对值或相对调整值。
在一种可能的设计中,所述获取SRS的功率控制参数之前,所述方法还包括:获取传输功率控制TPC信息;所述TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
在一种可能的设计中,所述获取SRS的功率控制参数,包括:根据所述第一RNTI,从所述TPC信息中解析出所述SRS的闭环功率控制参数值。
在一种可能的设计中,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值;则所述获取SRS的功率控制参数之前,所述方法还包括:获取下行控制信息DCI。
在一种可能的设计中,所述获取SRS的功率控制参数,包括:根据所述DCI获取所述SRS的闭环功率控制参数值。
在一种可能的设计中,若所述DCI为第二载波上获取到的控制信息,则所述DCI至少包括第一载波标识。
在一种可能的设计中,所述第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
在一种可能的设计中,所述根据所述DCI获取所述SRS的闭环功率控制参数值,包括:获取所述第一载波标识对应的载波上的所述SRS的闭环功率 控制参数值。
在一种可能的设计中,若所述DCI为第一载波上获取到的控制信息;则所述根据所述DCI获取所述SRS的闭环功率控制参数值,包括:从所述DCI中获取所述SRS的闭环功率控制参数值。
通过上述可能的设计方式,UE可以通过不同的方式来获取SRS的闭环功率控制参数值,并且,定义了新的DCI格式,使得UE在闭环的情况下也能获取到完整的所述SRS的功率控制参数,保证SRS传输的可靠性。
在一种可能的设计中,若所述SRS的闭环功率控制参数值为相对调整值,则所述方法还包括:根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定所述SRS的闭环功率控制参数值。
在一种可能的设计中,所述根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定所述SRS的闭环功率控制参数值,包括:根据公式fSRS,c1(i)=fSRS,c1(i-1)+δSRS,c1(i-KSRS)计算所述SRS的闭环功率控制参数值fSRS,c1(i),其中,fSRS,c1(i-1)为上一子帧的SRS的闭环功率控制信息,δSRS,c1(i-KSRS)为所述相对调整值,若所述SRS为周期性配置,则KSRS为所述SRS的子帧周期,若所述SRS为非周期性配置,则i-KSRS为上一子帧的子帧号。
在一种可能的设计中,所述根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:根据用户设备UE的最大发射功率、所述SRS的发射功率调整值、所述SRS的传输带宽、所述SRS的目标功率参数值、所述路径损耗补偿因子、下行路径损耗估计值、所述SRS的闭环功率控制参数中的至少一项获得所述SRS的发射功率。
在一种可能的设计中,所述根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1+fSRS,c1(i)}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,αSRS,c1(j)为所述路劲损耗补偿因子,PLSRS,c1为下行路劲损耗估计值,fSRS,c1(i)为所述SRS的闭环功率控制参数值。
通过上述可能的设计方式,UE可以精确的计算出闭环情况的SRS的发射功率,保证SRS在不同情况都能被正确接收。
第二方面,本发明实施例提供一种功率控制方法,包括:获取第一子帧和第二子帧的符号重叠部分的传输功率;所述第一子帧为在第一载波上传输探测参考信号SRS的子帧,所述第二子帧为在第二载波上传输SRS或物理信道的子帧;若所述传输功率大于用户设备UE的最大传输功率,则对传输信号的发射功率进行控制,所述传输信号包括所述SRS和/或所述物理信道。
在一种可能的设计中,所述对传输信号的发射功率进行控制之前,所述方法还包括:确定所述SRS是周期性配置或非周期性配置。
在一种可能的设计中,所述对传输信号的发射功率进行控制,包括:根据所述SRS的周期性配置,对传输信号的发射功率进行控制;或者,根据所述SRS的非周期性配置,对传输信号的发射功率进行控制。
在一种可能的设计中,若所述SRS为周期性配置,则所述对传输信号的发射功率进行控制,包括:丢弃所述SRS或者对所述SRS进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行共享信道PUSCH,且所述PUSCH不包括上行控制信息UCI;则所述对传输信号的发射功率进行控制,包括:丢弃所述PUSCH或者对所述PUSCH进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行共享信道PUSCH,且所述PUSCH包括上行控制信息UCI;则所述对传输信号的发射功率进行控制,包括:丢弃所述SRS或者对所述SRS进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH;则所述对传输信号的发射功率进行控制,包括:丢弃所述SRS或者对所述SRS进行功率缩放;或者,丢弃所述PUCCH或者对所述PUCCH进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH,且所述PUCCH包括混合自动重传请求HARQ;则所述对传输信号的发射功率进行控制,包括:丢弃所述SRS或者对所述SRS进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH,且所述PUCCH只包括信道状态信息CSI;则所述对传输信号的发射功率进行控制,包括:丢弃所述SRS或者对所述SRS进行功率缩放;或者,丢弃所述PUCCH或者对所述PUCCH进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理随机接入信道PRACH,且所述PRACH并行;则所述对传输信号的发射功率进行控制,包括:丢弃所述SRS或者对所述SRS进行功率缩放。
本实施例提供的功率控制方法,其实现原理和有益效果与第一方面的实现原理和有益效果类似,此处不再赘述。
第三方面,本发明实施例提供一种功率控制方法,所述方法包括:获取第一载波上探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;将所述SRS的功率控制参数发送给用户设备UE,以使所述UE根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率。
在一种可能的设计中,所述第一载波为不发送物理上行共享信道PUSCH的载波。
在一种可能的设计中,将所述SRS的功率控制参数发送给用户设备UE,包括:通过功率控制信令或跨载波功率控制信令将所述SRS的功率控制参数发送给所述UE。
在一种可能的设计中,所述功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
在一种可能的设计中,所述功率控制信令或所述跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
在一种可能的设计中,所述SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;或者,所述SRS的目标功率参数值为基于所述前导码初始接收目标功率值和功率调整值获得的参数值。
在一种可能的设计中,所述通过功率控制信令或跨载波功率控制信令将所述SRS的功率控制参数发送给所述UE,包括:根据第一无线网络临时标识RNTI对所述SRS的功率控制参数进行加扰,以生成所述功率控制信令或 所述跨载波功率控制信令;将所述功率控制信令或所述跨载波功率控制信令发送给所述UE。
在一种可能的设计中,所述SRS是周期性配置或非周期性配置。
在一种可能的设计中,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值,所述SRS的闭环功率控制参数值为绝对值或相对调整值。
在一种可能的设计中,所述方法还包括:向所述UE发送传输功率控制TPC信息,以使所述UE从所述TPC信息中解析出所述SRS的闭环功率控制参数值;所述TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
在一种可能的设计中,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值;所述方法还包括:向所述UE发送下行控制信息DCI,以使所述UE根据所述DCI获取所述SRS的闭环功率控制参数值。
在一种可能的设计中,若所述DCI为第二载波上获取到的控制信息,则所述DCI至少包括第一载波标识,所述DCI用于指示所述UE获取所述第一载波标识对应的载波上的所述SRS的闭环功率控制参数值。
在一种可能的设计中,所述第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
在一种可能的设计中,若所述DCI为第一载波上获取到的控制信息;则所述DCI用于指示所述UE从所述DCI中获取所述SRS的闭环功率控制参数值。
本实施例提供的功率控制方法,其实现原理和有益效果与第一方面的实现原理和有益效果类似,此处不再赘述。
第四方面,本发明实施例提供一种功率控制装置,包括:
获取模块,用于获取探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;
确定模块,用于根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率。
在一种可能的设计中,所述第一载波为不发送物理上行共享信道PUSCH的载波。
在一种可能的设计中,所述获取模块具体用于接收基站发送的功率控制 信令或跨载波功率控制信令。
在一种可能的设计中,所述功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
在一种可能的设计中,所述获取模块具体还用于从所述功率控制信令或所述跨载波功率控制信令中获取所述SRS的功率控制参数。
在一种可能的设计中,所述功率控制信令或所述跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
在一种可能的设计中,所述SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;
或者,
所述SRS的目标功率参数值为基于所述前导码初始接收目标功率值和功率调整值获得的参数值。
在一种可能的设计中,所述获取模块从所述功率控制信令或所述跨载波功率控制信令中获取所述功率控制参数,包括:
所述获取模块根据第一无线网络临时标识RNTI,从所述功率控制信令或所述跨载波功率控制信令中解析出所述SRS的功率控制参数。
在一种可能的设计中,所述确定模块具体用于根据用户设备UE的最大发射功率、所述SRS的发射功率调整值、所述SRS的传输带宽、所述SRS的目标功率参数值、所述路径损耗补偿因子、下行路径损耗估计值中的至少一项获得所述SRS的发射功率。
在一种可能的设计中,所述确定模块具体用于根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,j=0或1或2,αSRS,c1(j)为所述路径损耗补偿因子,PLSRS,c1为下行路径损耗估计值。
在一种可能的设计中,所述确定模块还用于确定所述SRS是周期性配置或非周期性配置。
在一种可能的设计中,若所述SRS的功率控制参数包括所述SRS的闭环 功率控制参数值,所述SRS的闭环功率控制参数值为绝对值或相对调整值。
在一种可能的设计中,所述获取模块还用于获取传输功率控制TPC信息;所述TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
在一种可能的设计中,所述获取模块获取SRS的功率控制参数,包括:
所述获取模块根据所述第一RNTI,从所述TPC信息中解析出所述SRS的闭环功率控制参数值。
在一种可能的设计中,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值;
所述获取模块还用于获取下行控制信息DCI。
在一种可能的设计中,所述获取模块获取SRS的功率控制参数,包括:
所述获取模块根据所述DCI获取所述SRS的闭环功率控制参数值。
在一种可能的设计中,若所述DCI为第二载波上获取到的控制信息,则所述DCI至少包括第一载波标识。
在一种可能的设计中,所述第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
在一种可能的设计中,所述获取模块根据所述DCI获取所述SRS的闭环功率控制参数值,包括:
所述获取模块获取所述第一载波标识对应的载波上的所述SRS的闭环功率控制参数值。
在一种可能的设计中,若所述DCI为第一载波上获取到的控制信息;
则所述获取模块根据所述DCI获取所述SRS的闭环功率控制参数值,包括:
所述获取模块从所述DCI中获取所述SRS的闭环功率控制参数值。
在一种可能的设计中,若所述SRS的闭环功率控制参数值为相对调整值,
则所述确定模块还用于根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定所述SRS的闭环功率控制参数值。
在一种可能的设计中,所述确定模块根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定所述SRS的闭环功率控制参数值,包括:
所述确定模块根据公式fSRS,c1(i)=fSRS,c1(i-1)+δSRS,c1(i-KSRS)计算所述SRS的 闭环功率控制参数值fSRS,c1(i),其中,fSRS,c1(i-1)为上一子帧的SRS的闭环功率控制信息,δSRS,c1(i-KSRS)为所述相对调整值,若所述SRS为周期性配置,则KSRS为所述SRS的子帧周期,若所述SRS为非周期性配置,则i-KSRS为上一子帧的子帧号。
在一种可能的设计中,所述确定模块根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:
所述确定模块根据用户设备UE的最大发射功率、所述SRS的发射功率调整值、所述SRS的传输带宽、所述SRS的目标功率参数值、所述路径损耗补偿因子、下行路径损耗估计值、所述SRS的闭环功率控制参数中的至少一项获得所述SRS的发射功率。
在一种可能的设计中,所述确定模块根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:
所述确定模块根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1+fSRS,c1(i)}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,αSRS,c1(j)为所述路劲损耗补偿因子,PLSRS,c1为下行路劲损耗估计值,fSRS,c1(i)为所述SRS的闭环功率控制参数值。
本实施例提供的功率控制装置,其实现原理和有益效果与第一方面的实现原理和有益效果类似,此处不再赘述。
第五方面,本发明实施例提供一种功率控制装置,包括:
获取模块,用于获取第一子帧和第二子帧的符号重叠部分的传输功率;所述第一子帧为在第一载波上传输探测参考信号SRS的子帧,所述第二子帧为在第二载波上传输SRS或物理信道的子帧;
处理模块,用于若所述传输功率大于用户设备UE的最大传输功率,则对传输信号的发射功率进行控制,所述传输信号包括所述SRS和/或所述物理信道。
在一种可能的设计中,所述处理模块还用于确定所述SRS是周期性配置或非周期性配置。
在一种可能的设计中,所述处理模块对传输信号的发射功率进行控制,包括:
所述处理模块根据所述SRS的周期性配置,对传输信号的发射功率进行控制;
或者,
所述处理模块根据所述SRS的非周期性配置,对传输信号的发射功率进行控制。
在一种可能的设计中,若所述SRS为周期性配置,则所述处理模块对传输信号的发射功率进行控制,包括:
所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行共享信道PUSCH,且所述PUSCH不包括上行控制信息UCI;
则所述处理模块对传输信号的发射功率进行控制,包括:
所述处理模块丢弃所述PUSCH或者对所述PUSCH进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行共享信道PUSCH,且所述PUSCH包括上行控制信息UCI;
则所述处理模块对传输信号的发射功率进行控制,包括:
所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH;
则所述处理模块对传输信号的发射功率进行控制,包括:
所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放;
或者,
所述处理模块丢弃所述PUCCH或者对所述PUCCH进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH,且所述PUCCH包括混合自动重传请求HARQ;
则所述处理模块对传输信号的发射功率进行控制,包括:
所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH,且所述PUCCH只包括信道状态信息CSI;
则所述处理模块对传输信号的发射功率进行控制,包括:
所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放;
或者,
所述处理模块丢弃所述PUCCH或者对所述PUCCH进行功率缩放。
在一种可能的设计中,若所述SRS为非周期性配置,所述物理信道为物理随机接入信道PRACH,且所述PRACH并行;
则所述处理模块对传输信号的发射功率进行控制,包括:
所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放。
本实施例提供的功率控制装置,其实现原理和有益效果与第一方面的实现原理和有益效果类似,此处不再赘述。
第六方面,本发明实施例提供一种功率控制装置,包括:
获取模块,用于获取第一载波上探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;
发送模块,用于将所述SRS的功率控制参数发送给用户设备UE,以使所述UE根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率。
在一种可能的设计中,所述第一载波为不发送物理上行共享信道PUSCH的载波。
在一种可能的设计中,所述发送模块具体用于通过功率控制信令或跨载波功率控制信令将所述SRS的功率控制参数发送给所述UE。
在一种可能的设计中,所述功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
在一种可能的设计中,所述功率控制信令或所述跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
在一种可能的设计中,所述SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;
或者,
所述SRS的目标功率参数值为基于所述前导码初始接收目标功率值和功率调整值获得的参数值。
在一种可能的设计中,所述发送模块通过功率控制信令或跨载波功率控制信令将所述SRS的功率控制参数发送给所述UE,包括:
所述发送模块根据第一无线网络临时标识RNTI对所述SRS的功率控制参数进行加扰,以生成所述功率控制信令或所述跨载波功率控制信令;并将所述功率控制信令或所述跨载波功率控制信令发送给所述UE。
在一种可能的设计中,所述SRS是周期性配置或非周期性配置。
在一种可能的设计中,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值,所述SRS的闭环功率控制参数值为绝对值或相对调整值。
在一种可能的设计中,所述发送模块还用于向所述UE发送传输功率控制TPC信息,以使所述UE从所述TPC信息中解析出所述SRS的闭环功率控制参数值;所述TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
在一种可能的设计中,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值;
所述发送模块还用于向所述UE发送下行控制信息DCI,以使所述UE根据所述DCI获取所述SRS的闭环功率控制参数值。
在一种可能的设计中,若所述DCI为第二载波上获取到的控制信息,则所述DCI至少包括第一载波标识,所述DCI用于指示所述UE获取所述第一载波标识对应的载波上的所述SRS的闭环功率控制参数值。
在一种可能的设计中,所述第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
在一种可能的设计中,若所述DCI为第一载波上获取到的控制信息;则所述DCI用于指示所述UE从所述DCI中获取所述SRS的闭环功率控制参数值。
本实施例提供的功率控制装置,其实现原理和有益效果与第一方面的实现原理和有益效果类似,此处不再赘述。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在 不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例提供的功率控制方法的应用场景示意图;
图2为本发明实施例一提供的功率控制方法的流程图;
图3为本发明实施例二提供的功率控制方法的流程图;
图4为本发明实施例三提供的功率控制方法的流程图;
图5为本发明实施例四提供的功率控制方法的流程图;
图6为本发明实施例五提供的功率控制装置的结构图;
图7为本发明实施例六提供的功率控制装置的结构图;
图8为本发明实施例七提供的功率控制装置的结构图;
图9为本发明实施例八提供的UE的结构图;
图10为本发明实施例九提供的基站的结构图。
具体实施方式
图1为本发明实施例提供的功率控制方法的应用场景示意图,该方法应用于无线通信系统中,如LTE-A系统。如图1所示,该场景包括网络设备1、用户终端2、用户终端3,本申请提供的功率控制方法主要用于网络设备和用户终端之间数据传输。需要说明的是,该场景中还可以包括其它的网络设备和用户终端,图1仅为示例性说明,并不以此为限。
本发明实施例涉及的用户终端,可以是指向用户提供语音和/或数据连通性的设备,具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(Radio Access Network,简称RAN)与一个或多个核心网进行通信,无线终端可以是移动终端,如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机,例如,可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语言和/或数据。
本发明实施例所涉及的网络设备,可以是基站,或者接入点,或者可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换,作为无线终端与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如,基站可以是GSM或CDMA中 的基站(Base Transceiver Station,简称BTS),也可以是WCDMA中的基站(NodeB),还可以是LTE中的演进型基站(eNB或e-NodeB,evolutional Node B),本申请并不限定。
图2为本发明实施例一提供的功率控制方法的流程图,该方法的执行主体为UE,如图2所示,该方法包括以下步骤:
步骤101、获取SRS的功率控制参数,SRS的功率控制参数包括SRS的目标功率参数值、路径损耗补偿因子、SRS的闭环功率控制参数值中的至少一个。
在本实施例中,UE可以通过不同的方式获取SRS的功率控制参数,例如,基站将预先配置好的SRS的功率控制参数通过切换前或切换后的用于传输SRS的载波传输给UE;或者,基站通过物理层信令或者控制信令将SRS的目标功率参数值和路径损耗补偿因子发送给UE,再通过传输功率控制(Transmission power control,简称TPC)信息将SRS的闭环功率控制参数值指示给UE;或者以其它的方式获取SRS的功率控制参数中各个值。
步骤102、根据SRS的功率控制参数确定SRS在第一载波上的发射功率。
在本实施例中,第一载波为进行基于SRS的载波切换后的载波,也叫非上行载波,为了在该载波上进行SRS的传输。UE可以根据SRS的功率控制参数计算出SRS在第一载波上的发射功率,使得SRS以合适的发射功率在第一载波进行发送。
本实施例提供的功率控制方法,UE获取包括SRS的目标功率参数值、路径损耗补偿因子、SRS的闭环功率控制参数值中的至少一个的SRS的功率控制参数,根据SRS的功率控制参数确定SRS在第一载波上的发射功率,UE可以根据新配置的SRS的功率控制参数计算在切换后的载波上SRS的发射功率,使得SRS以最优的发射功率在切换后的载波上进行传输,保证SRS被正确接收。
可选地,在上述图2所示实施例中,第一载波为不发送物理上行共享信道(Physical Uplink Shared Channel,简称PUSCH)的载波。也即,第一载波用于发送SRS,不发送PUSCH。
图3为本发明实施例二提供的功率控制方法的流程图,图3所示的方法为步骤101的具体实现过程,如图3所示,该方法包括以下步骤:
步骤201、接收基站发送的功率控制信令或跨载波功率控制信令;功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
在本实施例中,基站可以通过切换后载波上的功率控制信令下发给UE,也可以通过跨载波功率控制信令指示给UE。其中,跨载波功率控制信令包括在SRS所在的切换前载波上或任一非切换后载波的载波上接收到用于通知SRS切换后载波上的SRS传输的相关功率配置的信令,也即,跨载波功率控制信令为基站在切换前的载波上或任一非切换后载波的载波上发送的信令,该信令包括切换后的载波上SRS的功率控制参数。开环功率控制信令可以包括SRS的目标功率参数值和路径损耗补偿因子。闭环功率控制信令可以包括SRS的目标功率参数值、路径损耗补偿因子和SRS的闭环功率控制参数值。
可选地,功率控制信令或跨载波功率控制信令包括无线资源控制(Radio Resource Control,简称RRC)信令或物理层信令。
步骤202、从功率控制信令或跨载波功率控制信令中获取SRS的功率控制参数。
在本实施例中,UE接收到基站下发的功率控制信令或跨载波功率控制信令之后,对功率控制信令或跨载波功率控制信令进行解析,获取SRS的功率控制参数。
可选地,SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;或者,SRS的目标功率参数值为基于前导码初始接收目标功率值和功率调整值获得的参数值。
在本实施例中,基站可以通过功率控制信令或跨载波功率控制信令将前导码初始接收目标功率值发送给UE,UE根据前导码初始接收目标功率值计算SRS的目标功率参数值。或者,基站也可以前导码初始接收目标功率值和功率调整值相加,计算出SRS的目标功率参数值,再通过功率控制信令或跨载波功率控制信令将计算出的SRS的目标功率参数值发送给UE。其中,功率调整值也可以通过专门定义的随机接信道(Random Access Channel,简称RACH)的响应消息中获取。功率调整值也称之为功率偏移或功率偏移量(power offset)。
进一步地,从功率控制信令或跨载波功率控制信令中获取功率控制参数,包括:根据第一无线网络临时标识(Radio Network Tempory Identity,简称 RNTI),从功率控制信令或跨载波功率控制信令中解析出SRS的功率控制参数。
在本实施例中,第一RNTI不同于现有技术中已有的TPC-RNTI,第一RNTI为本申请中重新定义的RNTI,第一RNTI可以为命名为TPC-SRS-RNTI,第一RNTI用于对SRS的功率控制参数进行加扰(scramble)或掩码(mask),并将加扰后的参数携带物理层信令中指示给UE。
本实施例提供的功率控制方法,UE接收基站发送的功率控制信令或跨载波功率控制信令,从功率控制信令或跨载波功率控制信令中获取SRS的功率控制参数,基站可以以RRC信令或MAC信令或物理层信令的方式将SRS的功率控制参数指示给UE,还可以通过新定义的RNTI对SRS的功率控制参数进行加扰,基站以不同的方式将SRS的功率控制参数指示给UE,方法灵活多变,操作简单。
可选地,根据SRS的功率控制参数确定SRS的发射功率,包括:根据用户设备UE的最大发射功率、SRS的发射功率调整值、SRS的传输带宽、SRS的目标功率参数值、路径损耗补偿因子、下行路径损耗估计值中的至少一项获得SRS的发射功率。
具体的,当开环情况下,根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLc1}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在切换后载波C1的第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,j=0或1或2,αSRS,c1(j)为所述路径损耗补偿因子,PLc1为下行路径损耗估计值。其中,αSRS,c1(j)可以固定为1,PO_SRS,c1(j)通常选择j=2的情形,并且,当j=0时,PO_SRS,c1(j)为半静态调度的发射功率,当j=1时,PO_SRS,c1(j)为动态调度的发射功率,当j=2时,PO_SRS,c1(j)为随机接入调度的发射功率。
进一步地,根据SRS的功率控制参数确定SRS的发射功率之前,该方法还包括:确定SRS是周期性配置或非周期性配置。
在本实施例中,UE可以确定SRS为周期性配置还是非周期性配置,再根据SRS的周期性配置特征和SRS的功率控制参数来确定SRS的发射功率, 保证SRS在各种情况下都能被正确接收。
可选地,对应于闭环情况,若SRS的功率控制参数包括SRS的闭环功率控制参数值,SRS的闭环功率控制参数值为绝对值或相对调整值。
在本实施例中,SRS的闭环功率控制参数值为绝对值,可直接使用该绝对值计算SRS的发射功率,若SRS的闭环功率控制参数值为相对调整值,则需要先根据相对调整值计算SRS的闭环功率控制参数值,在使用计算获得的SRS的闭环功率控制参数值计算SRS的发射功率。
可选地,若SRS的闭环功率控制参数值为相对调整值,则方法还包括:根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定SRS的闭环功率控制参数值。
具体的,根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定SRS的闭环功率控制参数值,包括:根据公式fc1(i)=fc1(i-1)+δSRS,c1(i-KSRS)计算SRS的闭环功率控制参数值fc1(i),其中,fc1(i-1)为上一子帧的SRS的闭环功率控制信息,δSRS,c1(i-KSRS)为相对调整值,若SRS为周期性配置,则KSRS为SRS的子帧周期,若SRS为非周期性配置,则i-KSRS为上一子帧的子帧号。
进一步地,根据SRS的功率控制参数确定SRS的发射功率,包括:根据用户设备UE的最大发射功率、SRS的发射功率调整值、SRS的传输带宽、SRS的目标功率参数值、路径损耗补偿因子、下行路径损耗估计值、SRS的闭环功率控制参数中的至少一项获得SRS的发射功率。
具体的,根据SRS的功率控制参数确定SRS的发射功率,包括:根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLc1+fSRS,c1(i)}计算SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在切换后载波C1的第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为SRS的发射功率调整值,m=0或1,MSRS,c1为SRS的传输带宽,PO_SRS,c1(j)为SRS的目标功率参数值,αSRS,c1(j)为路劲损耗补偿因子,PLc1为下行路劲损耗估计值,fc1(i)为SRS的闭环功率控制参数值。其中,αSRS,c1(j)可以固定为1,PO_SRS,c1(j)通常选择j=2的情形,并且,当j=0时,PO_SRS,c1(j)为半静态调度的发射功率,当j=1时,PO_SRS,c1(j)为动态调度的发射功率,当j=2时,PO_SRS,c1(j)为随机接入调度的发射功率。
进一步地,获取SRS的功率控制参数之前,方法还包括:获取传输功率控制TPC信息;TPC信息为经过第一RNTI加扰或掩码的信息。
更进一步地,获取SRS的功率控制参数,包括:根据第一RNTI,从TPC信息中解析出SRS的闭环功率控制参数值。
在本实施例中,SRS的闭环功率控制参数值可以被包含在通过第一RNTI加扰的TPC信息中,而第一RNTI被预先指示给UE,UE可以根据第一RNTI对TPC信息进行解扰,获取SRS的闭环功率控制参数值。
再进一步地,若SRS的功率控制参数包括SRS的闭环功率控制参数值;则获取SRS的功率控制参数之前,方法还包括:获取下行控制信息(Downlink Control Information,简称DCI)。
再进一步地,获取SRS的功率控制参数,包括:根据DCI获取SRS的闭环功率控制参数值。
在本实施例中,可以定义不同格式的DCI,具体如下:
第一种DCI格式:若DCI为第二载波上获取到的控制信息,则DCI至少包括第一载波标识。其中,第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
相应的,在本实施例中,根据DCI获取SRS的闭环功率控制参数值,包括:获取第一载波标识对应的载波上的SRS的闭环功率控制参数值。
在本实施例中,当跨载波通知时,在切换前载波上获取的的DCI中至少需要包含切换后的载波的标识,以便于UE根据第一载波标识获取该载波标识对应的载波上的SRS的闭环功率控制参数值。
第二种DCI格式:若DCI为第一载波上获取到的控制信息;则根据DCI获取SRS的闭环功率控制参数值,包括:从DCI中获取SRS的闭环功率控制参数值。
在本实施例中,当DCI为在切换后载波上获取到的控制信息时,直接应用新的DCI格式中的SRS的闭环功率控制参数值进行SRS传输功率控制。
图4为本发明实施例三提供的功率控制方法的流程图,该方法涉及的是当基于SRS的载波切换被触发时,若两个子帧的符号重叠,并且重叠部分的传输功率超过UE的最大发射功率时,如何进行功率控制。如图4所示,该方法包括一下步骤:
步骤301、获取第一子帧和第二子帧的符号重叠部分的传输功率;第一子帧为在第一载波上传输探测参考信号SRS的子帧,第二子帧为在第二载波上传输SRS或物理信道的子帧。
在本实施例中,若用于在第一载波上传输探测参考信号SRS的子帧上的符号与用于在第二载波上传输SRS或物理信道的子帧的符号发生重叠,则需要计算符号重叠部分的传输功率。例如,当UE被配置多个定时提前分组(Timing Advance Group,简称TAG)时,如果一个TAG中一个假定服务载波/小区上的子帧i,与UE用于传输SRS的子帧i上的符号与其他的服务载波/小区上用于传输PUCCH的子帧i或子帧i+1上的符号重叠时,计算符号重叠部分的传输功率。
步骤302、若传输功率大于UE的最大传输功率,则对传输信号的发射功率进行控制,传输信号包括SRS和/或物理信道。
在本实施例中,若传输功率大于UE的最大传输功率,则对传输信号的发射功率进行控制,例如,若传输功率大于UE的最大传输功率,则适当的丢弃部分传输信号,或者,对传输信号进行功率缩放。
本实施例提供的功率控制方法,UE获取在第一载波上传输探测参考信号SRS的第一子帧和在第二载波上传输SRS或物理信道的第二子帧的符号重叠部分的传输功率,若传输功率大于UE的最大传输功率,则对传输信号的发射功率进行控制,使得传输信号以适当的功率进行传输,保证传输信号的传输效率。
可选地,对传输信号的发射功率进行控制之前,方法还包括:确定SRS是周期性配置或非周期性配置。
进一步地,对传输信号的发射功率进行控制,包括:根据SRS的周期性配置,对传输信号的发射功率进行控制;或者,根据SRS的非周期性配置,对传输信号的发射功率进行控制。
在本实施例中,可以根据SRS的周期性特征,选择对丢弃部分传输信号或者对部分传输信号进行功率缩放。
可选地,若SRS为周期性配置,则对传输信号的发射功率进行控制,包括:丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行共享信道PUSCH, 且PUSCH不包括上行控制信息UCI;则对传输信号的发射功率进行控制,包括:丢弃PUSCH或者对PUSCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行共享信道PUSCH,且PUSCH包括上行控制信息UCI;则对传输信号的发射功率进行控制,包括:丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行链路控制信道PUCCH;则对传输信号的发射功率进行控制,包括:丢弃SRS或者对SRS进行功率缩放;或者,丢弃PUCCH或者对PUCCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行链路控制信道PUCCH,且PUCCH包括混合自动重传请求HARQ;则对传输信号的发射功率进行控制,包括:丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为PUCCH,且PUCCH只包括信道状态信息(Channel State Information,简称CSI);则对传输信号的发射功率进行控制,包括:丢弃SRS或者对SRS进行功率缩放;或者,丢弃PUCCH或者对PUCCH进行功率缩放。
在本实施例中,SRS为非周期性配置,物理信道为PUCCH,且PUCCH只包括CSI,和/或,PUCCH不包括混合自动重传请求(Hybrid Automatic Repeat reQuest,简称HARQ)时,对传输信号的发射功率进行控制,包括:丢弃SRS或者对SRS进行功率缩放;或者,丢弃PUCCH或者对PUCCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理随机接入信道PRACH,且PRACH并行;则对传输信号的发射功率进行控制,包括:丢弃SRS或者对SRS进行功率缩放。
下面根据UE的不同配置,对上述“根据SRS的周期特征进行传输信号的功率控制”这一方法进行详细论述。
第一种情况:
当UE被配置多个TAG时,对于一个TAG中一个假定服务载波/小区上的子帧i,UE用于传输SRS的子帧i上的符号与其它的服务载波/小区上的子帧i/子帧i+1用于PUCCH/PUSCH的符号重叠时,如果符号重叠部分的传输功率超过了UE的最大发射功率时,分为以下情况:
1)当SRS被周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,UE丢弃SRS传输或者对SRS传输进行功率缩放。
2)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,只有PUSCH并且PUSCH不包含上行控制信息(uplink control information,简称UCI)时,UE丢弃PUSCH传输或者对PUSCH传输进行功率缩放,或者UE丢弃SRS传输或者对SRS传输进行功率缩放。
3)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,只有PUSCH并且PUSCH包含UCI时,UE丢弃SRS传输或者对SRS传输进行功率缩放。
4)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,存在PUCCH时,UE丢弃SRS传输或者对SRS传输进行功率缩放,或者UE丢弃PUSCH传输或者对PUSCH传输进行功率缩放。
5)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,存在PUCCH并且PUCCH包含HARQ混合自动重传请求(Hybrid Automatic Repeat reQuest,简称HARQ)时,UE丢弃SRS传输或者对SRS传输进行功率缩放。
6)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,存在PUCCH并且PUCCH只包含CSI时,UE丢弃或者SRS传输或者PUCCH;或者,对SRS传输进行功率缩放或者对PUCCH进行功率缩放。
第二种情况:
当UE被配置多个TAG及多于两个服务载波/小区时,对于一个假定服务载波/小区上的进行SRS传输的子帧i上的符号,与另一个服务载波/小区用于传输SRS的子帧i上符号重叠时,和/或与其它的服务载波/小区上的用于PUCCH/PUSCH传输的子帧i或子帧i+1上的符号重叠时,如果符号重叠部分整个率超过了UE的最大传输功率时,分为以下情况:
1)当SRS被周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,UE丢弃SRS传输或者对SRS传输进行功率缩放。
2)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超 出UE的最大发射功率,只有PUSCH并且PUSCH不包含上行控制信息UCI时,UE丢弃PUSCH传输或者对PUSCH传输进行功率缩放,或者UE丢弃SRS传输或者对SRS传输进行功率缩放。
3)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,只有PUSCH并且PUSCH包含上行控制信息UCI(uplink control information)时,UE丢弃SRS传输或者对SRS传输进行功率缩放。
4)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,存在PUCCH时,UE丢弃SRS传输或者对SRS传输进行功率缩放,或者UE丢弃PUSCH传输或者对PUSCH传输进行功率缩放。
5)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,存在PUCCH并且PUCCH包含HARQ时,UE丢弃SRS传输或者对SRS传输进行功率缩放。
6)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,存在PUCCH并且PUCCH只包含CSI时,UE丢弃或者SRS传输或者PUCCH;或者对SRS传输进行功率缩放或者对PUCCH进行功率缩放。
第三种情况:
当UE被配置多个TAG,UE将在一个辅助服务载波/小区上传输物理随机接入信道(Physical Random Access Channel,简称PRACH),该PRACH并行于不同服务载波/小区的用于SRS传输的一个子帧上的符号时,如果符号重叠部分的传输功率超过了UE的最大发射功率时,分为以下情况:
1)当SRS被周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,UE丢弃SRS传输或者对SRS传输进行功率缩放。
2)当SRS被非周期性配置时,若在任何重叠的符号部分的传输功率超出UE的最大发射功率,有PRACH并行时,UE丢弃SRS传输或者对SRS传输进行功率缩放。
图5为本发明实施例四提供的功率控制方法的流程图。该方法的执行主体为基站,如图5所示,该方法包括以下步骤:
步骤401、获取第一载波上SRS的功率控制参数,SRS的功率控制参数包括SRS的目标功率参数值、路径损耗补偿因子、SRS的闭环功率控制参数值中的至少一个。
在本实施例中,为了计算切换后载波上的SRS的发射功率,专门配置了SRS的功率控制参数。
步骤402、将SRS的功率控制参数发送给用户设备UE,以使UE根据SRS的功率控制参数确定SRS在第一载波上的发射功率。
在本实施例中,基站可以通过不同的方式将SRS的功率控制参数发送给UE,例如,基站将预先配置好的SRS的功率控制参数通过切换后的用于传输SRS的载波传输给UE;或者,基站通过物理层信令或者控制信令将SRS的目标功率参数值和路径损耗补偿因子发送给UE,再通过传输功率控制(Transmission power control,简称TPC)信息将SRS的闭环功率控制参数值指示给UE;或者以其它的方式将SRS的功率控制参数中各个值发送给UE。UE可以根据SRS的功率控制参数计算出SRS在第一载波上的发射功率,使得SRS以合适的发射功率在第一载波进行发送。
本实施例提供的功率控制方法,基站获取第一载波上的包括SRS的目标功率参数值、路径损耗补偿因子、SRS的闭环功率控制参数值中的至少一个的SRS的功率控制参数,将SRS的功率控制参数发送给用户设备UE,以使UE根据SRS的功率控制参数确定SRS在第一载波上的发射功率,使得UE可以根据新配置的SRS的功率控制参数计算在切换后的载波上SRS的发射功率,使得SRS以最优的发射功率在切换后的载波上进行传输,保证SRS被正确接收。
可选地,第一载波为不发送PUSCH的载波。
可选地,将SRS的功率控制参数发送给用户设备UE,包括:通过功率控制信令或跨载波功率控制信令将SRS的功率控制参数发送给UE。
其中,功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
其中,功率控制信令或跨载波功率控制信令包括RRC信令或物理层信令。
可选地,SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;或者,SRS的目标功率参数值为基于前导码初始接收目标功率值 和功率调整值获得的参数值。
进一步地,通过功率控制信令或跨载波功率控制信令将SRS的功率控制参数发送给UE,包括:根据第一RNTI对SRS的功率控制参数进行加扰,以生成功率控制信令或跨载波功率控制信令;将功率控制信令或跨载波功率控制信令发送给UE。
可选地,SRS是周期性配置或非周期性配置。
进一步地,若SRS的功率控制参数包括SRS的闭环功率控制参数值,SRS的闭环功率控制参数值为绝对值或相对调整值。
更进一步地,该方法还包括:向UE发送TPC信息,以使UE从TPC信息中解析出SRS的闭环功率控制参数值;TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
再进一步地,若SRS的功率控制参数包括SRS的闭环功率控制参数值;方法还包括:向UE发送下行控制信息DCI,以使UE根据DCI获取SRS的闭环功率控制参数值。
可选地,若DCI为第二载波上获取到的控制信息,则DCI至少包括第一载波标识,DCI用于指示UE获取第一载波标识对应的载波上的SRS的闭环功率控制参数值。
其中,第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
可选地,若DCI为第一载波上获取到的控制信息;则DCI用于指示UE从DCI中获取SRS的闭环功率控制参数值。
本实施例提供的功率控制方法由基站执行,与UE侧的功率控制方法相对应,其实现原理以及具体的技术特征的详细说明均可参见图2-图4实施例所述的UE侧的功率控制方法,此处不再赘述。
图6为本发明实施例五提供的功率控制装置的结构图。如图6所示,该装置包括获取模块11和确定模块12。获取模块11用于获取探测参考信号SRS的功率控制参数,SRS的功率控制参数包括SRS的目标功率参数值、路径损耗补偿因子、SRS的闭环功率控制参数值中的至少一个;确定模块12用于根据SRS的功率控制参数确定SRS在第一载波上的发射功率。
本实施例的装置,可以用于执行图2所示方法实施例的技术方案,其实 现原理和技术效果类似,此处不再赘述。
可选地,第一载波为不发送物理上行共享信道PUSCH的载波。
可选地,获取模块11具体用于接收基站发送的功率控制信令或跨载波功率控制信令。
可选地,功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
可选地,获取模块11具体还用于从功率控制信令或跨载波功率控制信令中获取SRS的功率控制参数。
可选地,功率控制信令或跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
可选地,SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;或者,SRS的目标功率参数值为基于前导码初始接收目标功率值和功率调整值获得的参数值。
可选地,获取模块11从功率控制信令或跨载波功率控制信令中获取功率控制参数,包括:获取模块11根据第一无线网络临时标识RNTI,从功率控制信令或跨载波功率控制信令中解析出SRS的功率控制参数。
可选地,确定模块12具体用于根据用户设备UE的最大发射功率、SRS的发射功率调整值、SRS的传输带宽、SRS的目标功率参数值、路径损耗补偿因子、下行路径损耗估计值中的至少一项获得SRS的发射功率。
可选地,确定模块12具体用于根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1}计算SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为SRS的发射功率调整值,m=0或1,MSRS,c1为SRS的传输带宽,PO_SRS,c1(j)为SRS的目标功率参数值,j=0或1或2,αSRS,c1(j)为路径损耗补偿因子,PLSRS,c1为下行路径损耗估计值。
可选地,确定模块12还用于确定SRS是周期性配置或非周期性配置。
可选地,若SRS的功率控制参数包括SRS的闭环功率控制参数值,SRS的闭环功率控制参数值为绝对值或相对调整值。
可选地,获取模块11还用于获取传输功率控制TPC信息;TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
可选地,获取模块11获取SRS的功率控制参数,包括:获取模块11根 据第一RNTI,从TPC信息中解析出SRS的闭环功率控制参数值。
可选地,若SRS的功率控制参数包括SRS的闭环功率控制参数值;获取模块11还用于获取下行控制信息DCI。
可选地,获取模块11获取SRS的功率控制参数,包括:获取模块11根据DCI获取SRS的闭环功率控制参数值。
可选地,若DCI为第二载波上获取到的控制信息,则DCI至少包括第一载波标识。
可选地,第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
可选地,获取模块11根据DCI获取SRS的闭环功率控制参数值,包括:获取模块11获取第一载波标识对应的载波上的SRS的闭环功率控制参数值。
可选地,若DCI为第一载波上获取到的控制信息;则获取模块11根据DCI获取SRS的闭环功率控制参数值,包括:获取模块11从DCI中获取SRS的闭环功率控制参数值。
可选地,若SRS的闭环功率控制参数值为相对调整值,则确定模块12还用于根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定SRS的闭环功率控制参数值。
可选地,确定模块12根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定SRS的闭环功率控制参数值,包括:确定模块12根据公式fSRS,c1(i)=fSRS,c1(i-1)+δSRS,c1(i-KSRS)计算SRS的闭环功率控制参数值fSRS,c1(i),其中,fSRS,c1(i-1)为上一子帧的SRS的闭环功率控制信息,δSRS,c1(i-KSRS)为相对调整值,若SRS为周期性配置,则KSRS为SRS的子帧周期,若SRS为非周期性配置,则i-KSRS为上一子帧的子帧号。
可选地,确定模块12根据SRS的功率控制参数确定SRS的发射功率,包括:确定模块12根据用户设备UE的最大发射功率、SRS的发射功率调整值、SRS的传输带宽、SRS的目标功率参数值、路径损耗补偿因子、下行路径损耗估计值、SRS的闭环功率控制参数中的至少一项获得SRS的发射功率。
可选地,确定模块12根据SRS的功率控制参数确定SRS的发射功率,包括:确定模块12根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1+fSRS,c1(i)} 计算SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为SRS的发射功率调整值,m=0或1,MSRS,c1为SRS的传输带宽,PO_SRS,c1(j)为SRS的目标功率参数值,αSRS,c1(j)为路劲损耗补偿因子,PLSRS,c1为下行路劲损耗估计值,fSRS,c1(i)为SRS的闭环功率控制参数值。
本实施例的装置,可以用于执行图2或3所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图7为本发明实施例六提供的功率控制装置的结构图。如图7所示,该装置包括获取模块21和处理模块22。获取模块21用于获取第一子帧和第二子帧的符号重叠部分的传输功率;第一子帧为在第一载波上传输探测参考信号SRS的子帧,第二子帧为在第二载波上传输SRS或物理信道的子帧;处理模块22用于若传输功率大于用户设备UE的最大传输功率,则对传输信号的发射功率进行控制,传输信号包括SRS和/或物理信道。
可选地,处理模块22还用于确定SRS是周期性配置或非周期性配置。
可选地,处理模块22对传输信号的发射功率进行控制,包括:处理模块22根据SRS的周期性配置,对传输信号的发射功率进行控制;或者,处理模块22根据SRS的非周期性配置,对传输信号的发射功率进行控制。
可选地,若SRS为周期性配置,则处理模块22对传输信号的发射功率进行控制,包括:处理模块22丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行共享信道PUSCH,且PUSCH不包括上行控制信息UCI;则处理模块22对传输信号的发射功率进行控制,包括:处理模块22丢弃PUSCH或者对PUSCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行共享信道PUSCH,且PUSCH包括上行控制信息UCI;则处理模块22对传输信号的发射功率进行控制,包括:处理模块22丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行链路控制信道PUCCH;则处理模块22对传输信号的发射功率进行控制,包括:处理模块22丢弃SRS或者对SRS进行功率缩放;或者,处理模块22丢弃PUCCH或者对PUCCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行链路控制信道 PUCCH,且PUCCH包括混合自动重传请求HARQ;则处理模块22对传输信号的发射功率进行控制,包括:处理模块22丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行链路控制信道PUCCH,且PUCCH只包括信道状态信息CSI;则处理模块22对传输信号的发射功率进行控制,包括:处理模块22丢弃SRS或者对SRS进行功率缩放;或者,处理模块22丢弃PUCCH或者对PUCCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理随机接入信道PRACH,且PRACH并行;则处理模块22对传输信号的发射功率进行控制,包括:处理模块22丢弃SRS或者对SRS进行功率缩放。
本实施例的装置,可以用于执行图4所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图8为本发明实施例七提供的功率控制装置的结构图。如图8所示,该装置包括获取模块31和发送模块32。获取模块31用于获取第一载波上探测参考信号SRS的功率控制参数,SRS的功率控制参数包括SRS的目标功率参数值、路径损耗补偿因子、SRS的闭环功率控制参数值中的至少一个;发送模块32用于将SRS的功率控制参数发送给用户设备UE,以使UE根据SRS的功率控制参数确定SRS在第一载波上的发射功率。
可选地,第一载波为不发送物理上行共享信道PUSCH的载波。
可选地,发送模块具体用于通过功率控制信令或跨载波功率控制信令将SRS的功率控制参数发送给UE。
可选地,功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
可选地,功率控制信令或跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
可选地,SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;或者,SRS的目标功率参数值为基于前导码初始接收目标功率值和功率调整值获得的参数值。
可选地,发送模块通过功率控制信令或跨载波功率控制信令将SRS的功率控制参数发送给UE,包括:发送模块根据第一无线网络临时标识RNTI对SRS的功率控制参数进行加扰,以生成功率控制信令或跨载波功率控制信令; 并将功率控制信令或跨载波功率控制信令发送给UE。
可选地,SRS是周期性配置或非周期性配置。
可选地,若SRS的功率控制参数包括SRS的闭环功率控制参数值,SRS的闭环功率控制参数值为绝对值或相对调整值。
可选地,发送模块还用于向UE发送传输功率控制TPC信息,以使UE从TPC信息中解析出SRS的闭环功率控制参数值;TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
可选地,若SRS的功率控制参数包括SRS的闭环功率控制参数值;发送模块还用于向UE发送下行控制信息DCI,以使UE根据DCI获取SRS的闭环功率控制参数值。
可选地,若DCI为第二载波上获取到的控制信息,则DCI至少包括第一载波标识,DCI用于指示UE获取第一载波标识对应的载波上的SRS的闭环功率控制参数值。
可选地,第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
可选地,若DCI为第一载波上获取到的控制信息;则DCI用于指示UE从DCI中获取SRS的闭环功率控制参数值。
本实施例的装置,可以用于执行图5所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图9为本发明实施例八提供的UE的结构图。UE可以包括:处理器401和存储器402。该装置还可以包括发送接口403、接收接口404。发送接口403和接收接口404可以和处理器401相连。其中,发送接口403用于发送数据或信息,发送接口403可以为无线发射装置,接收接口404用于接收数据或信息,接收接口404可以为无线接收装置,存储器402存储执行指令,当装置运行时,处理器401与存储器402之间通信,处理器401调用存储器402中的执行指令,用于执行以下操作:
获取探测参考信号SRS的功率控制参数,SRS的功率控制参数包括SRS的目标功率参数值、路径损耗补偿因子、SRS的闭环功率控制参数值中的至少一个;
根据SRS的功率控制参数确定SRS在第一载波上的发射功率。
可选地,第一载波为不发送物理上行共享信道PUSCH的载波。
可选地,处理器401获取探测参考信号SRS的功率控制参数,包括:处理器401接收基站发送的功率控制信令或跨载波功率控制信令。
可选地,功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
可选地,处理器401获取探测参考信号SRS的功率控制参数,包括:处理器401从功率控制信令或跨载波功率控制信令中获取SRS的功率控制参数。
可选地,功率控制信令或跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
可选地,SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;或者,SRS的目标功率参数值为基于前导码初始接收目标功率值和功率调整值获得的参数值。
可选地,处理器401从功率控制信令或跨载波功率控制信令中获取功率控制参数,包括:处理器401根据第一无线网络临时标识RNTI,从功率控制信令或跨载波功率控制信令中解析出SRS的功率控制参数。
可选地,处理器401根据SRS的功率控制参数确定SRS的发射功率,包括:处理器401根据用户设备UE的最大发射功率、SRS的发射功率调整值、SRS的传输带宽、SRS的目标功率参数值、路径损耗补偿因子、下行路径损耗估计值中的至少一项获得SRS的发射功率。
可选地,处理器401根据SRS的功率控制参数确定SRS的发射功率,包括:处理器401根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1}计算SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为SRS的发射功率调整值,m=0或1,MSRS,c1为SRS的传输带宽,PO_SRS,c1(j)为SRS的目标功率参数值,j=0或1或2,αSRS,c1(j)为路径损耗补偿因子,PLSRS,c1为下行路径损耗估计值。
可选地,处理器401还用于确定SRS是周期性配置或非周期性配置。
可选地,若SRS的功率控制参数包括SRS的闭环功率控制参数值,SRS的闭环功率控制参数值为绝对值或相对调整值。
可选地,处理器401还用于获取传输功率控制TPC信息;TPC信息为经 过第一无线网络临时标识RNTI加扰的信息。
可选地,处理器401还用于根据第一RNTI,从TPC信息中解析出SRS的闭环功率控制参数值。
可选地,若SRS的功率控制参数包括SRS的闭环功率控制参数值;处理器401还用于获取下行控制信息DCI。
可选地,处理器401获取SRS的功率控制参数,包括:处理器401根据DCI获取SRS的闭环功率控制参数值。
可选地,若DCI为第二载波上获取到的控制信息,则DCI至少包括第一载波标识。
可选地,第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
可选地,处理器401根据DCI获取SRS的闭环功率控制参数值,包括:处理器401获取第一载波标识对应的载波上的SRS的闭环功率控制参数值。
可选地,若DCI为第一载波上获取到的控制信息;则处理器401根据DCI获取SRS的闭环功率控制参数值,包括:处理器401从DCI中获取SRS的闭环功率控制参数值。
可选地,若SRS的闭环功率控制参数值为相对调整值,处理器401还用于根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定SRS的闭环功率控制参数值。
可选地,处理器401根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定SRS的闭环功率控制参数值,包括:处理器401根据公式fSRS,c1(i)=fSRS,c1(i-1)+δSRS,c1(i-KSRS)计算SRS的闭环功率控制参数值fSRS,c1(i),其中,fSRS,c1(i-1)为上一子帧的SRS的闭环功率控制信息,δSRS,c1(i-KSRS)为相对调整值,若SRS为周期性配置,则KSRS为SRS的子帧周期,若SRS为非周期性配置,则i-KSRS为上一子帧的子帧号。
可选地,处理器401根据SRS的功率控制参数确定SRS的发射功率,包括:处理器401根据用户设备UE的最大发射功率、SRS的发射功率调整值、SRS的传输带宽、SRS的目标功率参数值、路径损耗补偿因子、下行路径损耗估计值、SRS的闭环功率控制参数中的至少一项获得SRS的发射功率。
可选地,处理器401根据SRS的功率控制参数确定SRS的发射功率,包 括:处理器401根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1+fSRS,c1(i)}计算SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为SRS的发射功率调整值,m=0或1,MSRS,c1为SRS的传输带宽,PO_SRS,c1(j)为SRS的目标功率参数值,αSRS,c1(j)为路劲损耗补偿因子,PLSRS,c1为下行路劲损耗估计值,fSRS,c1(i)为SRS的闭环功率控制参数值。
本实施例的UE,可以用于执行图2或3所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
本申请实施例还提供一种UE,该UE的结构与图9所示UE的结构相同,当UE运行时,处理器与存储器之间通信,处理器调用存储器中的执行指令,用于执行以下操作:
获取第一子帧和第二子帧的符号重叠部分的传输功率;第一子帧为在第一载波上传输探测参考信号SRS的子帧,第二子帧为在第二载波上传输SRS或物理信道的子帧;
若传输功率大于用户设备UE的最大传输功率,则对传输信号的发射功率进行控制,传输信号包括SRS和/或物理信道。
可选地,处理器还用于确定SRS是周期性配置或非周期性配置。
可选地,处理器对传输信号的发射功率进行控制,包括:处理器根据SRS的周期性配置,对传输信号的发射功率进行控制;或者,处理器根据SRS的非周期性配置,对传输信号的发射功率进行控制。
可选地,若SRS为周期性配置,则处理器对传输信号的发射功率进行控制,包括:处理器丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行共享信道PUSCH,且PUSCH不包括上行控制信息UCI;则处理器对传输信号的发射功率进行控制,包括:处理器丢弃PUSCH或者对PUSCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行共享信道PUSCH,且PUSCH包括上行控制信息UCI;则处理器对传输信号的发射功率进行控制,包括:处理器丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行链路控制信道 PUCCH;则处理器对传输信号的发射功率进行控制,包括:处理器丢弃SRS或者对SRS进行功率缩放;或者,处理器丢弃PUCCH或者对PUCCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行链路控制信道PUCCH,且PUCCH包括混合自动重传请求HARQ;则处理器对传输信号的发射功率进行控制,包括:处理器丢弃SRS或者对SRS进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理上行链路控制信道PUCCH,且PUCCH只包括信道状态信息CSI;则处理器对传输信号的发射功率进行控制,包括:处理器丢弃SRS或者对SRS进行功率缩放;或者,处理器丢弃PUCCH或者对PUCCH进行功率缩放。
可选地,若SRS为非周期性配置,物理信道为物理随机接入信道PRACH,且PRACH并行;则处理器对传输信号的发射功率进行控制,包括:处理器丢弃SRS或者对SRS进行功率缩放。
本实施例的UE,可以用于执行图4所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图10为本发明实施例九提供的基站的结构图。如图10所示,该基站包括处理器501和发射器502。处理器501用于获取第一载波上探测参考信号SRS的功率控制参数,SRS的功率控制参数包括SRS的目标功率参数值、路径损耗补偿因子、SRS的闭环功率控制参数值中的至少一个;发射器502用于将SRS的功率控制参数发送给用户设备UE,以使UE根据SRS的功率控制参数确定SRS在第一载波上的发射功率。
可选地,第一载波为不发送物理上行共享信道PUSCH的载波。
可选地,发射器502将SRS的功率控制参数发送给用户设备UE,包括:发射器502通过功率控制信令或跨载波功率控制信令将SRS的功率控制参数发送给UE。
可选地,功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
可选地,功率控制信令或跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
可选地,SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;或者,SRS的目标功率参数值为基于前导码初始接收目标功率值 和功率调整值获得的参数值。
可选地,发射器502通过功率控制信令或跨载波功率控制信令将SRS的功率控制参数发送给UE,包括:发射器502根据RNTI对SRS的功率控制参数进行加扰,以生成功率控制信令或跨载波功率控制信令;将功率控制信令或跨载波功率控制信令发送给UE。
可选地,SRS是周期性配置或非周期性配置。
可选地,若SRS的功率控制参数包括SRS的闭环功率控制参数值,SRS的闭环功率控制参数值为绝对值或相对调整值。
可选地,发射器502还用于向UE发送传输功率控制TPC信息,以使UE从TPC信息中解析出SRS的闭环功率控制参数值;TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
可选地,若SRS的功率控制参数包括SRS的闭环功率控制参数值;发射器502还用于向UE发送下行控制信息DCI,以使UE根据DCI获取SRS的闭环功率控制参数值。
可选地,若DCI为第二载波上获取到的控制信息,则DCI至少包括第一载波标识,DCI用于指示UE获取第一载波标识对应的载波上的SRS的闭环功率控制参数值。
可选地,第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
可选地,若DCI为第一载波上获取到的控制信息;则DCI用于指示UE从DCI中获取SRS的闭环功率控制参数值。
可选地,如图10所示,基站还可以包括存储器503和接收器504。存储器503用于存储指令和数据,接收器504用于接收数据或信息。
本实施例的装置,可以用于执行图5示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
本领域普通技术人员可以理解:实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时,执行包括上述各方法实施例的步骤;而前述的存储介质包括: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。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (96)

  1. 一种功率控制方法,其特征在于,包括:
    获取探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;
    根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率。
  2. 根据权利要求1所述的方法,其特征在于,所述第一载波为不发送物理上行共享信道PUSCH的载波。
  3. 根据权利要求1或2所述的方法,其特征在于,所述获取探测参考信号SRS的功率控制参数,包括:
    接收基站发送的功率控制信令或跨载波功率控制信令。
  4. 根据权利要求3所述的方法,其特征在于,所述功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
  5. 根据权利要求3或4所述的方法,其特征在于,所述获取探测参考信号SRS的功率控制参数,包括:
    从所述功率控制信令或所述跨载波功率控制信令中获取所述SRS的功率控制参数。
  6. 根据权利要求3-5任一项所述的方法,其特征在于,所述功率控制信令或所述跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
  7. 根据权利要求1-6任一项所述方法,其特征在于,所述SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;
    或者,
    所述SRS的目标功率参数值为基于所述前导码初始接收目标功率值和功率调整值获得的参数值。
  8. 根据权利要求5-7任一项所述的方法,其特征在于,所述从所述功率控制信令或所述跨载波功率控制信令中获取所述功率控制参数,包括:
    根据第一无线网络临时标识RNTI,从所述功率控制信令或所述跨载波功率控制信令中解析出所述SRS的功率控制参数。
  9. 根据权利要求1-8任一项所述的方法,其特征在于,所述根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:
    根据用户设备UE的最大发射功率、所述SRS的发射功率调整值、所述SRS的传输带宽、所述SRS的目标功率参数值、所述路径损耗补偿因子、下行路径损耗估计值中的至少一项获得所述SRS的发射功率。
  10. 根据权利要求9所述的方法,其特征在于,所述根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:
    根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,j=0或1或2,αSRS,c1(j)为所述路径损耗补偿因子,PLSRS,c1为下行路径损耗估计值。
  11. 根据权利要求1所述的方法,其特征在于,所述根据所述SRS的功率控制参数确定所述SRS的发射功率之前,所述方法还包括:
    确定所述SRS是周期性配置或非周期性配置。
  12. 根据权利要求1或11所述的方法,其特征在于,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值,所述SRS的闭环功率控制参数值为绝对值或相对调整值。
  13. 根据权利要求1-12任一项所述的方法,其特征在于,所述获取SRS的功率控制参数之前,所述方法还包括:
    获取传输功率控制TPC信息;所述TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
  14. 根据权利要求13所述的方法,其特征在于,所述获取SRS的功率控制参数,包括:
    根据所述第一RNTI,从所述TPC信息中解析出所述SRS的闭环功率控制参数值。
  15. 根据权利要求1、11-14任一项所述的方法,其特征在于,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值;
    则所述获取SRS的功率控制参数之前,所述方法还包括:
    获取下行控制信息DCI。
  16. 根据权利要求15所述的方法,其特征在于,所述获取SRS的功率控制参数,包括:
    根据所述DCI获取所述SRS的闭环功率控制参数值。
  17. 根据权利要求16所述的方法,其特征在于,若所述DCI为第二载波上获取到的控制信息,则所述DCI至少包括第一载波标识。
  18. 根据权利要求17所述的方法,其特征在于,所述第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
  19. 根据权利要求17或18所述的方法,其特征在于,所述根据所述DCI获取所述SRS的闭环功率控制参数值,包括:
    获取所述第一载波标识对应的载波上的所述SRS的闭环功率控制参数值。
  20. 根据权利要求16所述的方法,其特征在于,若所述DCI为第一载波上获取到的控制信息;
    则所述根据所述DCI获取所述SRS的闭环功率控制参数值,包括:
    从所述DCI中获取所述SRS的闭环功率控制参数值。
  21. 根据权利要求12-20任一项所述的方法,其特征在于,若所述SRS的闭环功率控制参数值为相对调整值,
    则所述方法还包括:
    根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定所述SRS的闭环功率控制参数值。
  22. 根据权利要求21所述的方法,其特征在于,所述根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定所述SRS的闭环功率控制参数值,包括:
    根据公式fSRS,c1(i)=fSRS,c1(i-1)+δSRS,c1(i-KSRS)计算所述SRS的闭环功率控制参数值fSRS,c1(i),其中,fSRS,c1(i-1)为上一子帧的SRS的闭环功率控制信息,δSRS,c1(i-KSRS)为所述相对调整值,若所述SRS为周期性配置,则KSRS为所述SRS的子帧周期,若所述SRS为非周期性配置,则i-KSRS为上一子帧的子帧号。
  23. 根据权利要求11-22任一项所述的方法,其特征在于,所述根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:
    根据用户设备UE的最大发射功率、所述SRS的发射功率调整值、所述SRS的传输带宽、所述SRS的目标功率参数值、所述路径损耗补偿因子、下行路径损耗估计值、所述SRS的闭环功率控制参数中的至少一项获得所述SRS的发射功率。
  24. 根据权利要求23所述的方法,其特征在于,所述根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:
    根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1+fSRS,c1(i)}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,αSRS,c1(j)为所述路劲损耗补偿因子,PLSRS,c1为下行路劲损耗估计值,fSRS,c1(i)为所述SRS的闭环功率控制参数值。
  25. 一种功率控制方法,其特征在于,包括:
    获取第一子帧和第二子帧的符号重叠部分的传输功率;所述第一子帧为在第一载波上传输探测参考信号SRS的子帧,所述第二子帧为在第二载波上传输SRS或物理信道的子帧;
    若所述传输功率大于用户设备UE的最大传输功率,则对传输信号的发射功率进行控制,所述传输信号包括所述SRS和/或所述物理信道。
  26. 根据权利要求25所述的方法,其特征在于,所述对传输信号的发射功率进行控制之前,所述方法还包括:
    确定所述SRS是周期性配置或非周期性配置。
  27. 根据权利要求25或26所述的方法,其特征在于,所述对传输信号的发射功率进行控制,包括:
    根据所述SRS的周期性配置,对传输信号的发射功率进行控制;
    或者,
    根据所述SRS的非周期性配置,对传输信号的发射功率进行控制。
  28. 根据权利要求25-27任一项所述的方法,其特征在于,若所述SRS为周期性配置,则所述对传输信号的发射功率进行控制,包括:
    丢弃所述SRS或者对所述SRS进行功率缩放。
  29. 根据权利要求25-27任一项所述的方法,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行共享信道PUSCH,且所述PUSCH不包括上行控制信息UCI;
    则所述对传输信号的发射功率进行控制,包括:
    丢弃所述PUSCH或者对所述PUSCH进行功率缩放。
  30. 根据权利要求25-27任一项所述的方法,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行共享信道PUSCH,且所述PUSCH包括上行控制信息UCI;
    则所述对传输信号的发射功率进行控制,包括:
    丢弃所述SRS或者对所述SRS进行功率缩放。
  31. 根据权利要求25-27任一项所述的方法,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH;
    则所述对传输信号的发射功率进行控制,包括:
    丢弃所述SRS或者对所述SRS进行功率缩放;
    或者,
    丢弃所述PUCCH或者对所述PUCCH进行功率缩放。
  32. 根据权利要求25-27任一项所述的方法,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH,且所述PUCCH包括混合自动重传请求HARQ;
    则所述对传输信号的发射功率进行控制,包括:
    丢弃所述SRS或者对所述SRS进行功率缩放。
  33. 根据权利要求25-27任一项所述的方法,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH,且所述PUCCH只包括信道状态信息CSI;
    则所述对传输信号的发射功率进行控制,包括:
    丢弃所述SRS或者对所述SRS进行功率缩放;
    或者,
    丢弃所述PUCCH或者对所述PUCCH进行功率缩放。
  34. 根据权利要求25-27任一项所述的方法,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理随机接入信道PRACH,且所述PRACH 并行;
    则所述对传输信号的发射功率进行控制,包括:
    丢弃所述SRS或者对所述SRS进行功率缩放。
  35. 一种功率控制方法,其特征在于,所述方法包括:
    获取第一载波上探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;
    将所述SRS的功率控制参数发送给用户设备UE,以使所述UE根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率。
  36. 根据权利要求35所述的方法,其特征在于,所述第一载波为不发送物理上行共享信道PUSCH的载波。
  37. 根据权利要求35或36所述的方法,其特征在于,将所述SRS的功率控制参数发送给用户设备UE,包括:
    通过功率控制信令或跨载波功率控制信令将所述SRS的功率控制参数发送给所述UE。
  38. 根据权利要求37所述的方法,其特征在于,所述功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
  39. 根据权利要求37或38所述的方法,其特征在于,所述功率控制信令或所述跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
  40. 根据权利要求35-39任一项所述的方法,其特征在于,所述SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;
    或者,
    所述SRS的目标功率参数值为基于所述前导码初始接收目标功率值和功率调整值获得的参数值。
  41. 根据权利要求39或40所述的方法,其特征在于,所述通过功率控制信令或跨载波功率控制信令将所述SRS的功率控制参数发送给所述UE,包括:
    根据第一无线网络临时标识RNTI对所述SRS的功率控制参数进行加扰,以生成所述功率控制信令或所述跨载波功率控制信令;
    将所述功率控制信令或所述跨载波功率控制信令发送给所述UE。
  42. 根据权利要求35所述的方法,其特征在于,所述SRS是周期性配置或非周期性配置。
  43. 根据权利要求35或42所述的方法,其特征在于,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值,所述SRS的闭环功率控制参数值为绝对值或相对调整值。
  44. 根据权利要求35-43任一项所述的方法,其特征在于,所述方法还包括:
    向所述UE发送传输功率控制TPC信息,以使所述UE从所述TPC信息中解析出所述SRS的闭环功率控制参数值;所述TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
  45. 根据权利要求35、42-44任一项所述的方法,其特征在于,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值;所述方法还包括:
    向所述UE发送下行控制信息DCI,以使所述UE根据所述DCI获取所述SRS的闭环功率控制参数值。
  46. 根据权利要求45所述的方法,其特征在于,若所述DCI为第二载波上获取到的控制信息,则所述DCI至少包括第一载波标识,所述DCI用于指示所述UE获取所述第一载波标识对应的载波上的所述SRS的闭环功率控制参数值。
  47. 根据权利要求46所述的方法,其特征在于,所述第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
  48. 根据权利要求45所述的方法,其特征在于,若所述DCI为第一载波上获取到的控制信息;则所述DCI用于指示所述UE从所述DCI中获取所述SRS的闭环功率控制参数值。
  49. 一种功率控制装置,其特征在于,包括:
    获取模块,用于获取探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;
    确定模块,用于根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率。
  50. 根据权利要求49所述的装置,其特征在于,所述第一载波为不发送 物理上行共享信道PUSCH的载波。
  51. 根据权利要求49或50所述的装置,其特征在于,所述获取模块具体用于接收基站发送的功率控制信令或跨载波功率控制信令。
  52. 根据权利要求50所述的装置,其特征在于,所述功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
  53. 根据权利要求51或52所述的装置,其特征在于,所述获取模块具体还用于从所述功率控制信令或所述跨载波功率控制信令中获取所述SRS的功率控制参数。
  54. 根据权利要求51-53任一项所述的装置,其特征在于,所述功率控制信令或所述跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
  55. 根据权利要求49-54任一项所述的装置,其特征在于,所述SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;
    或者,
    所述SRS的目标功率参数值为基于所述前导码初始接收目标功率值和功率调整值获得的参数值。
  56. 根据权利要求53-55任一项所述的装置,其特征在于,所述获取模块从所述功率控制信令或所述跨载波功率控制信令中获取所述功率控制参数,包括:
    所述获取模块根据第一无线网络临时标识RNTI,从所述功率控制信令或所述跨载波功率控制信令中解析出所述SRS的功率控制参数。
  57. 根据权利要求49-56任一项所述的装置,其特征在于,所述确定模块具体用于根据用户设备UE的最大发射功率、所述SRS的发射功率调整值、所述SRS的传输带宽、所述SRS的目标功率参数值、所述路径损耗补偿因子、下行路径损耗估计值中的至少一项获得所述SRS的发射功率。
  58. 根据权利要求57所述的装置,其特征在于,所述确定模块具体用于根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0 或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,j=0或1或2,αSRS,c1(j)为所述路径损耗补偿因子,PLSRS,c1为下行路径损耗估计值。
  59. 根据权利要求49所述的装置,其特征在于,所述确定模块还用于确定所述SRS是周期性配置或非周期性配置。
  60. 根据权利要求49或59所述的装置,其特征在于,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值,所述SRS的闭环功率控制参数值为绝对值或相对调整值。
  61. 根据权利要求49-60任一项所述的装置,其特征在于,所述获取模块还用于获取传输功率控制TPC信息;所述TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
  62. 根据权利要求61所述的装置,其特征在于,所述获取模块获取SRS的功率控制参数,包括:
    所述获取模块根据所述第一RNTI,从所述TPC信息中解析出所述SRS的闭环功率控制参数值。
  63. 根据权利要求49、59-62任一项所述的装置,其特征在于,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值;
    所述获取模块还用于获取下行控制信息DCI。
  64. 根据权利要求63所述的装置,其特征在于,所述获取模块获取SRS的功率控制参数,包括:
    所述获取模块根据所述DCI获取所述SRS的闭环功率控制参数值。
  65. 根据权利要求64所述的装置,其特征在于,若所述DCI为第二载波上获取到的控制信息,则所述DCI至少包括第一载波标识。
  66. 根据权利要求65所述的装置,其特征在于,所述第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
  67. 根据权利要求65或66所述的装置,其特征在于,所述获取模块根据所述DCI获取所述SRS的闭环功率控制参数值,包括:
    所述获取模块获取所述第一载波标识对应的载波上的所述SRS的闭环功率控制参数值。
  68. 根据权利要求64所述的装置,其特征在于,若所述DCI为第一载 波上获取到的控制信息;
    则所述获取模块根据所述DCI获取所述SRS的闭环功率控制参数值,包括:
    所述获取模块从所述DCI中获取所述SRS的闭环功率控制参数值。
  69. 根据权利要求60-68任一项所述的装置,其特征在于,若所述SRS的闭环功率控制参数值为相对调整值,
    则所述确定模块还用于根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定所述SRS的闭环功率控制参数值。
  70. 根据权利要求69所述的装置,其特征在于,所述确定模块根据上一子帧的SRS的闭环功率控制信息和相对调整值中的至少一项确定所述SRS的闭环功率控制参数值,包括:
    所述确定模块根据公式fSRS,c1(i)=fSRS,c1(i-1)+δSRS,c1(i-KSRS)计算所述SRS的闭环功率控制参数值fSRS,c1(i),其中,fSRS,c1(i-1)为上一子帧的SRS的闭环功率控制信息,δSRS,c1(i-KSRS)为所述相对调整值,若所述SRS为周期性配置,则KSRS为所述SRS的子帧周期,若所述SRS为非周期性配置,则i-KSRS为上一子帧的子帧号。
  71. 根据权利要求59-70任一项所述的装置,其特征在于,所述确定模块根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:
    所述确定模块根据用户设备UE的最大发射功率、所述SRS的发射功率调整值、所述SRS的传输带宽、所述SRS的目标功率参数值、所述路径损耗补偿因子、下行路径损耗估计值、所述SRS的闭环功率控制参数中的至少一项获得所述SRS的发射功率。
  72. 根据权利要求71所述的装置,其特征在于,所述确定模块根据所述SRS的功率控制参数确定所述SRS的发射功率,包括:
    所述确定模块根据公式PSRS,c1(i)=min{PCMAX,c1(i),PSRS_OFFSET,c1(m)+10log10(MSRS,c1)+PO_SRS,c1(j)+αSRS,c1(j)·PLSRS,c1+fSRS,c1(i)}计算所述SRS的发射功率PSRS,c1(i);其中,PCMAX,c1(i)为用户设备UE在第i个子帧上的最大发射功率,PSRS_OFFSET,c1(m)为所述SRS的发射功率调整值,m=0或1,MSRS,c1为所述SRS的传输带宽,PO_SRS,c1(j)为所述SRS的目标功率参数值,αSRS,c1(j)为所述路劲损耗补偿因子,PLSRS,c1为下行路劲损耗估计值,fSRS,c1(i) 为所述SRS的闭环功率控制参数值。
  73. 一种功率控制装置,其特征在于,包括:
    获取模块,用于获取第一子帧和第二子帧的符号重叠部分的传输功率;所述第一子帧为在第一载波上传输探测参考信号SRS的子帧,所述第二子帧为在第二载波上传输SRS或物理信道的子帧;
    处理模块,用于若所述传输功率大于用户设备UE的最大传输功率,则对传输信号的发射功率进行控制,所述传输信号包括所述SRS和/或所述物理信道。
  74. 根据权利要求73所述的装置,其特征在于,所述处理模块还用于确定所述SRS是周期性配置或非周期性配置。
  75. 根据权利要求73或74所述的装置,其特征在于,所述处理模块对传输信号的发射功率进行控制,包括:
    所述处理模块根据所述SRS的周期性配置,对传输信号的发射功率进行控制;
    或者,
    所述处理模块根据所述SRS的非周期性配置,对传输信号的发射功率进行控制。
  76. 根据权利要求73-75任一项所述的装置,其特征在于,若所述SRS为周期性配置,则所述处理模块对传输信号的发射功率进行控制,包括:
    所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放。
  77. 根据权利要求73-75任一项所述的装置,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行共享信道PUSCH,且所述PUSCH不包括上行控制信息UCI;
    则所述处理模块对传输信号的发射功率进行控制,包括:
    所述处理模块丢弃所述PUSCH或者对所述PUSCH进行功率缩放。
  78. 根据权利要求73-75任一项所述的装置,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行共享信道PUSCH,且所述PUSCH包括上行控制信息UCI;
    则所述处理模块对传输信号的发射功率进行控制,包括:
    所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放。
  79. 根据权利要求73-75任一项所述的装置,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH;
    则所述处理模块对传输信号的发射功率进行控制,包括:
    所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放;
    或者,
    所述处理模块丢弃所述PUCCH或者对所述PUCCH进行功率缩放。
  80. 根据权利要求73-75任一项所述的装置,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH,且所述PUCCH包括混合自动重传请求HARQ;
    则所述处理模块对传输信号的发射功率进行控制,包括:
    所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放。
  81. 根据权利要求73-75任一项所述的装置,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理上行链路控制信道PUCCH,且所述PUCCH只包括信道状态信息CSI;
    则所述处理模块对传输信号的发射功率进行控制,包括:
    所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放;
    或者,
    所述处理模块丢弃所述PUCCH或者对所述PUCCH进行功率缩放。
  82. 根据权利要求73-75任一项所述的装置,其特征在于,若所述SRS为非周期性配置,所述物理信道为物理随机接入信道PRACH,且所述PRACH并行;
    则所述处理模块对传输信号的发射功率进行控制,包括:
    所述处理模块丢弃所述SRS或者对所述SRS进行功率缩放。
  83. 一种功率控制装置,其特征在于,包括:
    获取模块,用于获取第一载波上探测参考信号SRS的功率控制参数,所述SRS的功率控制参数包括所述SRS的目标功率参数值、路径损耗补偿因子、所述SRS的闭环功率控制参数值中的至少一个;
    发送模块,用于将所述SRS的功率控制参数发送给用户设备UE,以使所述UE根据所述SRS的功率控制参数确定所述SRS在第一载波上的发射功率。
  84. 根据权利要求83所述的装置,其特征在于,所述第一载波为不发送物理上行共享信道PUSCH的载波。
  85. 根据权利要求83或84所述的装置,其特征在于,所述发送模块具体用于通过功率控制信令或跨载波功率控制信令将所述SRS的功率控制参数发送给所述UE。
  86. 根据权利要求85所述的装置,其特征在于,所述功率控制信令包括开环功率控制信令和/或闭环功率控制信令。
  87. 根据权利要求85或86所述的装置,其特征在于,所述功率控制信令或所述跨载波功率控制信令包括无线资源控制RRC信令或物理层信令。
  88. 根据权利要求83-87任一项所述的装置,其特征在于,所述SRS的目标功率参数值为基于前导码初始接收目标功率值获得的参数值;
    或者,
    所述SRS的目标功率参数值为基于所述前导码初始接收目标功率值和功率调整值获得的参数值。
  89. 根据权利要求87或88所述的装置,其特征在于,所述发送模块通过功率控制信令或跨载波功率控制信令将所述SRS的功率控制参数发送给所述UE,包括:
    所述发送模块根据第一无线网络临时标识RNTI对所述SRS的功率控制参数进行加扰,以生成所述功率控制信令或所述跨载波功率控制信令;并将所述功率控制信令或所述跨载波功率控制信令发送给所述UE。
  90. 根据权利要求83所述的装置,其特征在于,所述SRS是周期性配置或非周期性配置。
  91. 根据权利要求83或90所述的装置,其特征在于,若所述SRS的功率控制参数包括所述SRS的闭环功率控制参数值,所述SRS的闭环功率控制参数值为绝对值或相对调整值。
  92. 根据权利要求83-91任一项所述的装置,其特征在于,所述发送模块还用于向所述UE发送传输功率控制TPC信息,以使所述UE从所述TPC信息中解析出所述SRS的闭环功率控制参数值;所述TPC信息为经过第一无线网络临时标识RNTI加扰的信息。
  93. 根据权利要求83、90-92任一项所述的装置,其特征在于,若所述 SRS的功率控制参数包括所述SRS的闭环功率控制参数值;
    所述发送模块还用于向所述UE发送下行控制信息DCI,以使所述UE根据所述DCI获取所述SRS的闭环功率控制参数值。
  94. 根据权利要求93所述的装置,其特征在于,若所述DCI为第二载波上获取到的控制信息,则所述DCI至少包括第一载波标识,所述DCI用于指示所述UE获取所述第一载波标识对应的载波上的所述SRS的闭环功率控制参数值。
  95. 根据权利要求94所述的装置,其特征在于,所述第二载波为切换前的载波或除切换后的载波之外的任一载波,第一载波为切换后的载波。
  96. 根据权利要求93所述的装置,其特征在于,若所述DCI为第一载波上获取到的控制信息;则所述DCI用于指示所述UE从所述DCI中获取所述SRS的闭环功率控制参数值。
PCT/CN2016/082122 2016-05-13 2016-05-13 功率控制方法和装置 Ceased WO2017193398A1 (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12593341B2 (en) * 2021-05-10 2026-03-31 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method for carrier determination, terminal device, and network device

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108365930B (zh) * 2017-01-26 2021-08-31 华为技术有限公司 上行测量参考信号的功率控制方法、网络设备及终端设备
CN110621063B (zh) 2017-05-05 2022-06-07 华为技术有限公司 上行链路传输的功率控制方法
KR102379822B1 (ko) * 2017-06-15 2022-03-30 삼성전자 주식회사 빔포밍 시스템에서 단말의 송신 전력 제어 방법 및 장치
WO2018230901A1 (ko) 2017-06-15 2018-12-20 삼성전자 주식회사 빔포밍 시스템에서 단말의 송신 전력 제어 방법 및 장치
CN110035484A (zh) 2018-01-12 2019-07-19 中兴通讯股份有限公司 一种功率控制方法、第一通信节点和第二通信节点
CN110049539A (zh) * 2018-01-16 2019-07-23 维沃移动通信有限公司 上行功率控制参数配置方法、终端及网络设备
CN110351040B (zh) * 2018-04-03 2020-08-14 维沃移动通信有限公司 探测参考信号传输、配置方法、用户设备及网络侧设备
US11350416B2 (en) * 2018-07-20 2022-05-31 Qualcomm Incorporated Physical uplink control channel repetition configuration
CN110859004B (zh) * 2018-08-23 2023-12-08 维沃移动通信有限公司 用于确定物理上行共享信道发送功率的方法和设备
CN110881218A (zh) * 2018-09-05 2020-03-13 维沃移动通信有限公司 探测参考信号传输方法和终端设备
CN110972246B (zh) * 2018-09-28 2023-09-22 维沃移动通信有限公司 功率控制方法、传输功率控制参数确定方法及相关设备
US11172495B2 (en) * 2019-01-11 2021-11-09 Qualcomm Incorporated Collision handling
US11388723B2 (en) * 2019-03-28 2022-07-12 Ofinno, Llc Uplink transmission in a wireless communication system
CN111263430B (zh) * 2019-04-30 2021-11-09 维沃移动通信有限公司 Srs功率控制方法和设备
US11490402B2 (en) * 2019-07-05 2022-11-01 Qualcomm Incorporated Power control based on semi-static direction for dual connectivity
CN111800861A (zh) 2019-07-12 2020-10-20 维沃移动通信有限公司 功率控制方法及设备
CN113613322B (zh) * 2019-08-12 2023-06-20 Oppo广东移动通信有限公司 用于确定发射功率的方法和装置
CN111092710A (zh) 2019-11-08 2020-05-01 中兴通讯股份有限公司 发送参数确定方法、电子装置、设备及介质
EP3829076A3 (en) 2019-11-28 2021-08-04 Samsung Electronics Co., Ltd. Transmission power control of sounding reference signals in wireless communication system and device
CN113596975B (zh) 2020-04-30 2022-12-06 华为技术有限公司 一种上行功率控制方法及装置
KR102900322B1 (ko) * 2020-12-16 2025-12-16 삼성전자주식회사 전자 장치 및 전자 장치에서 기준 신호를 전송하는 방법
CN116671213A (zh) 2021-01-07 2023-08-29 华为技术有限公司 确定发送功率的方法及装置
CN117796054A (zh) * 2021-07-09 2024-03-29 高通股份有限公司 特定于波束的虚拟功率余量报告
US20240098650A1 (en) * 2022-09-16 2024-03-21 Qualcomm Incorporated Transmitting secondary cell transmissions using transmit power control adjustment values associated with a primary cell

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103369654A (zh) * 2012-04-09 2013-10-23 电信科学技术研究院 功控参数的指示及功控方法和设备
CN103634887A (zh) * 2012-08-24 2014-03-12 华为技术有限公司 载波汇聚场景下用户设备的上行功率控制方法和装置
EP2765732A2 (en) * 2013-02-06 2014-08-13 Samsung Electronics Co., Ltd Method and apparatus for transmitting channel sounding reference signal in wireless communication system
CN104081838A (zh) * 2012-01-30 2014-10-01 松下电器(美国)知识产权公司 无线通信终端装置及发送功率控制方法
CN104955144A (zh) * 2011-12-19 2015-09-30 华为技术有限公司 一种上行发射功率控制方法及用户设备

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2409533B1 (en) * 2009-03-17 2019-11-06 InterDigital Patent Holdings, Inc. Method and apparatus for power control of sounding reference signal (srs) transmission
KR101752025B1 (ko) 2010-04-30 2017-06-28 선 페이턴트 트러스트 단말 장치 및 참조 신호의 전력 제어 방법
JP2014523219A (ja) * 2011-08-12 2014-09-08 富士通株式会社 上りパワー制御方法及び装置
WO2013048143A2 (en) * 2011-09-27 2013-04-04 Samsung Electronics Co., Ltd. A method and appratus for transmission power control for a sounding reference signal
EP2761780A1 (en) * 2011-09-30 2014-08-06 Interdigital Patent Holdings, Inc. Multipoint transmission in wireless communication
CN103312484B (zh) * 2012-03-16 2017-12-29 中兴通讯股份有限公司 探测参考信号发射功率的控制方法、用户设备和基站
JP6073073B2 (ja) * 2012-05-10 2017-02-01 シャープ株式会社 端末装置、基地局装置および通信方法
KR20140009902A (ko) * 2012-07-12 2014-01-23 주식회사 케이티 상향링크 사운딩 참조신호 전송전력 제어방법 및 그 단말, 송수신포인트
RS57419B1 (sr) * 2012-08-01 2018-09-28 Sun Patent Trust Uređaj terminala za bežičnu komunikaciju, uređaj bazne stanice za bežičnu komunikaciju i bežični komunikacioni metod
US10159052B2 (en) 2012-08-03 2018-12-18 Qualcomm Incorporated Method and apparatus for sounding reference signal triggering and power control for coordinated multi-point operations
US9414335B2 (en) * 2014-02-06 2016-08-09 Electronics And Telecommunications Research Instit Method and apparatus for transmitting uplink signal or uplink channel
CN105099632B (zh) 2014-04-23 2019-12-13 北京三星通信技术研究有限公司 一种上行探测参考信号传输的方法和设备
US10547426B2 (en) 2016-03-14 2020-01-28 Samsung Electronics Co., Ltd. Transmission of sounding reference signals in communication systems with carrier aggregation
US10333670B2 (en) * 2016-05-06 2019-06-25 Qualcomm Incorporated Sounding reference signals with collisions in asymmetric carrier aggregation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104955144A (zh) * 2011-12-19 2015-09-30 华为技术有限公司 一种上行发射功率控制方法及用户设备
CN104081838A (zh) * 2012-01-30 2014-10-01 松下电器(美国)知识产权公司 无线通信终端装置及发送功率控制方法
CN103369654A (zh) * 2012-04-09 2013-10-23 电信科学技术研究院 功控参数的指示及功控方法和设备
CN103634887A (zh) * 2012-08-24 2014-03-12 华为技术有限公司 载波汇聚场景下用户设备的上行功率控制方法和装置
EP2765732A2 (en) * 2013-02-06 2014-08-13 Samsung Electronics Co., Ltd Method and apparatus for transmitting channel sounding reference signal in wireless communication system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3454608A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12593341B2 (en) * 2021-05-10 2026-03-31 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method for carrier determination, terminal device, and network device

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