WO2018187977A1 - 上行功率控制方法、设备及系统 - Google Patents

上行功率控制方法、设备及系统 Download PDF

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Publication number
WO2018187977A1
WO2018187977A1 PCT/CN2017/080262 CN2017080262W WO2018187977A1 WO 2018187977 A1 WO2018187977 A1 WO 2018187977A1 CN 2017080262 W CN2017080262 W CN 2017080262W WO 2018187977 A1 WO2018187977 A1 WO 2018187977A1
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WIPO (PCT)
Prior art keywords
signal
downlink
path loss
terminal device
target
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PCT/CN2017/080262
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English (en)
French (fr)
Inventor
唐海
Original Assignee
Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Priority to EP17905866.4A priority Critical patent/EP3606182B1/en
Priority to JP2019554510A priority patent/JP6978511B2/ja
Priority to CN201780089293.7A priority patent/CN110495219B/zh
Priority to PCT/CN2017/080262 priority patent/WO2018187977A1/zh
Priority to KR1020197032496A priority patent/KR102244945B1/ko
Publication of WO2018187977A1 publication Critical patent/WO2018187977A1/zh
Priority to US16/591,500 priority patent/US11006370B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695—Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/246—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter calculated in said terminal

Definitions

  • the present invention relates to wireless network technologies, and in particular, to an uplink power control method, device, and system.
  • the terminal device when determining the transmit power of an uplink signal, the terminal device needs to perform downlink path loss estimation based on the downlink signal, and determine the transmit power of the uplink signal after performing path loss compensation according to the downlink path loss. .
  • LTE Long Term Evolution
  • the downlink signal used for downlink path loss estimation in the LTE system does not perform narrowband transmission or reception beamforming, and thus the uplink path loss can be estimated using the obtained downlink path loss.
  • the transmission of the uplink and downlink signals will carry out narrow-band beamforming, so the uplink and downlink path loss are likely to be inconsistent, that is, the downlink path loss and the actual uplink path loss based on the downlink signal may be obtained.
  • the uplink path loss and the actual uplink path loss based on the downlink signal may be obtained.
  • the present invention provides an uplink power control method, apparatus, and system.
  • An uplink power control method includes:
  • the terminal device determines a target downlink signal used for downlink path loss estimation
  • the terminal device performs downlink path loss estimation based on the target downlink signal, and obtains downlink Road damage estimate;
  • the terminal device sends the uplink signal according to the transmit power.
  • An uplink power control method includes:
  • the network side device sends the target downlink signal, so that the terminal device performs downlink path loss estimation based on the target downlink signal, and determines the transmit power of the uplink signal according to the downlink path loss estimation result.
  • a terminal device includes: a downlink signal determining unit, a downlink path loss estimating unit, a transmitting power determining unit, and an uplink signal sending unit;
  • the downlink signal determining unit is configured to determine a target downlink signal used for performing downlink path loss estimation
  • the downlink path loss estimating unit is configured to perform downlink path loss estimation based on the target downlink signal to obtain a downlink path loss estimation value;
  • the sending power determining unit is configured to determine, according to the downlink path loss estimation value, a sending power of an uplink signal
  • the uplink signal sending unit is configured to send the uplink signal according to the sending power.
  • a network side device comprising: a downlink signal sending unit;
  • the downlink signal sending unit is configured to send a target downlink signal, so that the terminal device performs downlink path loss estimation based on the target downlink signal, and determines a transmit power of the uplink signal according to the downlink path loss estimation result.
  • An uplink power control system comprising:
  • the terminal device can be determined first. Determining the target downlink signal for downlink path loss estimation, and performing downlink path loss estimation based on the determined target downlink signal, thereby obtaining a downlink path loss estimation value, and further determining the transmission power of the uplink signal according to the downlink path loss estimation value. And performing uplink signal transmission according to the determined transmission power, thereby implementing uplink power control in the beamforming scenario, thereby improving system performance.
  • FIG. 1 is a flowchart of an embodiment of an uplink power control method according to the present invention.
  • FIG. 2 is a schematic structural diagram of a structure of an embodiment of a terminal device according to the present invention.
  • FIG. 3 is a schematic structural diagram of a structure of an embodiment of a network side device according to the present invention.
  • FIG. 4 is a schematic structural diagram of an embodiment of an uplink power control system according to the present invention.
  • FIG. 1 is a flowchart of an embodiment of an uplink power control method according to the present invention. As shown in FIG. 1 , the following specific implementation manners are included:
  • the terminal device determines a target downlink signal used for downlink path loss estimation
  • the terminal device performs downlink path loss estimation based on the target downlink signal, and obtains a downlink path loss estimation value;
  • the terminal device determines, according to the downlink path loss estimation value, the transmit power of the uplink signal
  • the terminal device transmits an uplink signal according to the determined transmission power.
  • the target downlink signal may include: a channel state information reference signal (CSI-RS, Channel State Information-Reference Signals), and a mobility reference signal (MRS, Mobility Reference Signal), Synchronous Signal (SS), Phase Tracking Reference Signal (PTRS), Demodulation Reference Signal (DMRS), etc.
  • CSI-RS channel state information reference signal
  • MRS Mobility Reference Signal
  • SS Synchronous Signal
  • PTRS Phase Tracking Reference Signal
  • DMRS Demodulation Reference Signal
  • the uplink signal may include a Physical Uplink Shared Channel (PUSCH) signal, a Physical Uplink Control Channel (PUCCH) signal, a Sounding Reference Signal (SRS), and the like.
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • SRS Sounding Reference Signal
  • Different uplink signals can correspond to different target downlink signals.
  • different target downlink signals may be used for downlink path loss estimation and the like.
  • different target downlink signals may be respectively corresponding, for example, corresponding to different CSI-RS resources.
  • the terminal device determines a target downlink signal for downlink path loss estimation
  • the terminal device may first receive the first indication information from the network side before determining the target downlink signal for performing the downlink path loss estimation, where the first indication information is used to indicate whether the terminal device uses the downlink path loss estimation to obtain the uplink.
  • the transmission power of the signal if the indication result is yes, the terminal device may further determine a target downlink signal for performing downlink path loss estimation.
  • the network side may indicate, by using the first indication information, whether the terminal device uses the uplink path loss estimation or the downlink path loss estimation to obtain the transmission power of the uplink signal.
  • the uplink path loss estimate is usually indicated by the network side to the terminal device, and the downlink path loss estimate is measured by the terminal device. If the network side determines that the uplink and downlink path loss is reciprocal, the terminal device may be instructed to use the downlink path loss estimation to obtain the transmit power of the uplink signal.
  • the network side may indicate, according to actual conditions, whether the terminal device can use the downlink path loss estimation to obtain the transmit power of the uplink signal by using the first indication information. If yes, the terminal device may use the downlink path loss estimation to obtain the transmit power of the uplink signal, that is, update the transmit power of the uplink signal. Otherwise, the terminal device may send the uplink signal based on the previously determined transmit power, that is, the uplink signal is not updated. The power is sent until subsequent network side notifications can be updated.
  • the manner in which the terminal device determines the target downlink signal used for downlink path loss estimation may include at least the following two types.
  • the terminal device receives the second indication information from the network side, and determines a target downlink signal used for performing downlink path loss estimation according to the second indication information.
  • the second indication information may be used to carry the index information of the target downlink signal, and is used to indicate the index of the target downlink signal in the plurality of downlink signals that are configured in advance, so that the terminal device can learn to use the index information according to the index information.
  • the target downlink signal for downlink path loss estimation may be used to carry the index information of the target downlink signal, and is used to indicate the index of the target downlink signal in the plurality of downlink signals that are configured in advance, so that the terminal device can learn to use the index information according to the index information.
  • the second indication information may be carried by the high-layer signaling, or may be carried by the downlink control information (DCI, Downlink Control Information).
  • DCI Downlink Control Information
  • the network side may pre-configure multiple CSI-RS resources through high-layer signaling, and indicate an index of one or more CSI-RS resources used for downlink path loss estimation.
  • the network side may send multiple synchronization signal blocks (SS Blocks) and indicate an index of the synchronization signal block in which the downlink path loss estimation is performed, and the terminal device may be based on the synchronization signal in the synchronization signal block corresponding to the index.
  • SS Blocks synchronization signal blocks
  • the DMRS of the Physical Broadcast Channel (PBCH) in the synchronization signal block performs downlink path loss estimation.
  • PBCH Physical Broadcast Channel
  • the network side may indicate multiple target downlink signals for downlink path loss estimation, the multiple destinations
  • the standard downlink signal may be the same type of downlink signal with different configurations, such as CSI-RS or SS, and may also contain different types of signals, such as CSI-RS and MRS.
  • the terminal device may measure the M candidate downlink signals, and select N candidate downlink signals as the target downlink signals according to the measurement result.
  • M is a positive integer greater than one, and N is a positive integer less than or equal to M.
  • the specific values of M and N may be determined according to actual needs.
  • N may have a value of 1.
  • the M candidate downlink signals may be a plurality of downlink signals pre-configured by the network side for performing downlink path loss estimation, for example, multiple CSI-RS resources.
  • the M candidate downlink signals may be a plurality of downlink signals that are pre-agreed with the network side, for example, synchronization signals in a plurality of synchronization signal blocks transmitted at a predetermined resource location.
  • the terminal device can separately measure the reception quality of the M candidate downlink signals, and select the N candidate downlink signals with the best reception quality as the target downlink signals.
  • the reception quality may refer to Reference Signal Receiving Quality (RSRQ).
  • RSRQ Reference Signal Receiving Quality
  • the terminal device may separately measure the received power of the M candidate downlink signals, and select the N candidate downlink signals with the largest received power as the target downlink signals.
  • the received power may refer to Reference Signal Receiving Power (RSRP).
  • RSRP Reference Signal Receiving Power
  • the terminal device may further report the index information of the target downlink signal to the network side, so that the network side knows the selected target downlink signal.
  • multiple CSI-RS resources are pre-configured on the network side, and the terminal device can report it.
  • the terminal device may report the measurement result of the target downlink signal to the network side while reporting the index information of the target downlink signal to the network side.
  • the terminal device may report the index information of the target downlink signal and the RSRP measured based on the target downlink signal to the network side through the high layer signaling.
  • the terminal device may report only the measurement result of the target downlink signal to the network side.
  • the terminal device performs downlink path loss estimation based on the target downlink signal, and obtains a downlink path loss estimation value.
  • the terminal device can perform downlink path loss estimation according to the received power and the transmission power of the target downlink signal, thereby obtaining a downlink path loss estimation value.
  • the terminal device may calculate an average value of the received power of each target downlink signal, and determine an estimated downlink path loss value according to the average value and the transmission power of each target downlink signal, or The terminal device may determine the path loss estimation value corresponding to each target downlink signal according to the received power and the transmission power of each target downlink signal, and average the path loss estimation values corresponding to the downlink signals of each target to obtain the downlink path loss estimation. value.
  • the terminal device may directly determine the downlink path loss estimation value according to the received power and the transmission power of the target downlink signal.
  • the transmission power of the target downlink signal may be notified to the terminal device by using the downlink signaling in advance by the network side, for example, being carried in the configuration information of the CSI-RS resource and notified to the terminal device.
  • the transmission powers of the plurality of target downlink signals are the same, and may be different if necessary.
  • the path loss estimate is usually expressed in dB, assuming that the received power is P1 and the transmit power is P2. Then the path loss estimate can be expressed as:
  • the terminal device may also determine a receiving beam for receiving the target downlink signal according to the recently determined beam for transmitting the uplink signal, and perform downlink path loss estimation based on the received target downlink signal.
  • the terminal device may use the beam shaping weight used for transmitting the uplink signal as the receiving shaping weight of the receiving target downlink signal, thereby measuring the received power of the received target downlink signal, and calculating the downlink path loss estimated value. .
  • the uplink signal may be an uplink signal in the terminals 103 and 104, or may be an uplink signal indicated by the network side to the terminal device.
  • the terminal device may also determine a correspondence between the transmit beam and the receive beam in advance, and determine the receive beam according to the transmit beam and the corresponding relationship.
  • the terminal device may further determine, according to the transmit beam used by the SRS signal sent by the SRS resource indicated by the newly received SRI (SRS Resource Indication) information, to determine the receiving of the downlink signal for receiving the target.
  • the beam is subjected to downlink path loss estimation based on the received target downlink signal.
  • the SRI is generally indicated to the terminal device by the network side by scheduling DCI for uplink data transmission.
  • the SRI is used to indicate a target SRS resource among a plurality of SRS resources used by the terminal device to transmit the SRS.
  • the terminal device may determine the SRS resource indicated by the SRI and the beamforming weight value used for transmitting the SRS signal on the SRS resource according to the SRI in the DCI of the latest received scheduling uplink data, and the weight value is used.
  • Receiving right as the receiving target downlink signal The value, thereby measuring the received power of the received downlink signal, for calculating the downlink path loss estimate.
  • the terminal device can also perform downlink path loss estimation according to part of the antenna port of the target downlink signal.
  • downlink loss estimation is performed according to one or two antenna ports in the target downlink signal, and which antenna ports are selected may be determined according to actual needs.
  • the terminal device determines the transmit power of the uplink signal according to the estimated downlink path loss value
  • the terminal device After obtaining the downlink path loss estimate, in general, the terminal device can obtain the transmit power of the uplink signal according to the following formula.
  • Pt represents the transmission power
  • Pmax represents the maximum transmission power allowed in the uplink
  • PL represents the downlink path loss estimation value (in dB)
  • a represents the path loss compensation factor, which is usually indicated by the network side to the terminal equipment
  • b represents other power control. Parameters, how to get b for the prior art.
  • equation (2) it is assumed that the uplink path loss estimate and the downlink path loss estimate are the same, but in practical applications, the two are likely to be different, and therefore, the formula (2) needs to be improved.
  • the terminal device may first determine an uplink path loss estimation value according to the downlink path loss estimation value, and further determine an uplink signal transmission power according to the uplink path loss estimation value.
  • the network side may pre-configure a path loss offset value, and the terminal device may calculate an uplink path loss estimated value according to the downlink path loss estimation value and the path loss offset value.
  • PL_UL PL_DL+k
  • PL_UL represents the uplink path loss estimation value
  • PL_DL represents the downlink path loss estimation value
  • k represents the path loss offset value
  • the PL in the formula (2) can be replaced with PL_UL, thereby calculating Pt.
  • the terminal device sends an uplink signal according to the transmission power.
  • the terminal device may send the uplink signal according to the transmission power.
  • the terminal device may further determine a transmit beam used for transmitting the uplink signal according to the receive beam used to receive the target downlink signal, and then send the uplink signal by using the transmit beam.
  • the receiving shaping weight used for receiving the target downlink signal may be used as the transmitting beam shaping weight used for transmitting the uplink signal, thereby transmitting the uplink signal.
  • the receiving beam used by the terminal device to receive the target downlink signal is more consistent with the transmitting beam used for transmitting the uplink signal, so that the estimated downlink path loss is closer to the uplink path loss, and thus the obtained downlink channel can be obtained. Loss is used for uplink power control.
  • the solution of the present invention is mainly described from the terminal device side.
  • the network side device may send the target downlink signal, so that the terminal device performs downlink based on the target downlink signal.
  • the loss estimation is performed, and the transmission power of the uplink signal is determined according to the downlink path loss estimation result.
  • the target downlink signal is indicated by the network side device to the terminal device by using a downlink instruction.
  • the network side device may send the first indication information to the terminal device, where the first indication information is used to indicate whether the terminal device uses the downlink path loss estimation to obtain the transmission power of the uplink signal.
  • the network side device may indicate, by using the first indication information, whether the terminal device uses the uplink path loss estimation or the downlink path loss estimation to obtain the transmission power of the uplink signal.
  • the network side device may indicate, according to actual conditions, whether the terminal device can use the downlink path loss estimation to obtain the transmit power of the uplink signal by using the first indication information.
  • the network side device device may send second indication information to the terminal device, where the second indication information is used to indicate a target downlink signal used for performing downlink path loss estimation.
  • the second indication information may carry index information of the target downlink signal.
  • the network side device may pre-configure multiple CSI-RS resources through high layer signaling, and indicate an index of one or more CSI-RS resources used for performing downlink path loss estimation.
  • the network side device may send a plurality of synchronization signal blocks and indicate an index of the synchronization signal block in which the downlink path loss estimation is performed.
  • the network side device may indicate that multiple target downlink signals are used for downlink path loss estimation, and the multiple target downlink signals may be downlink signals of the same type with different configurations, such as CSI-RS or SS, and may also include different types of signals. Such as CSI-RS and MRS.
  • the network side device device may further configure a plurality of downlink signals that may be used for downlink path loss estimation, for example, multiple CSI-RS resources, or pre-arrange multiple downlink signals with the terminal device, for example, in a good agreement.
  • the synchronization signal in the plurality of synchronization signal blocks transmitted at the resource location, so that the terminal device can select at least one of the plurality of downlink signals as the target downlink signal.
  • the network side device may determine the transmit beam used for transmitting the target downlink signal according to the receive beam used for receiving the uplink signal, and then use the transmit beam to transmit the target downlink signal.
  • the received shaping weight value used for receiving the uplink signal may be used as the transmission beam shaping weight used for transmitting the target downlink signal, thereby transmitting the target downlink signal.
  • the terminal device can perform downlink path loss estimation based on the target downlink signal to obtain downlink loss estimation.
  • the value of the downlink signal is determined according to the estimated value of the downlink path loss, and the uplink signal is sent according to the determined transmission power. Accordingly, the network side device receives the uplink signal sent by the terminal device.
  • the target downlink signal may include: CSI-RS, MRS, SS, PTRS, DMRS, and the like.
  • the uplink signal may include: a PUSCH, a PUCCH, an SRS, and the like.
  • Different uplink signals can correspond to different target downlink signals.
  • the method includes: a downlink signal determining unit 201, a downlink path loss estimating unit 202, a transmitting power determining unit 203, and an uplink signal sending unit 204.
  • the downlink signal determining unit 201 is configured to determine a target downlink signal used for performing downlink path loss estimation.
  • the downlink path loss estimating unit 202 is configured to perform downlink path loss estimation based on the target downlink signal to obtain a downlink path loss estimated value.
  • the transmission power determining unit 203 is configured to determine the transmission power of the uplink signal according to the downlink path loss estimation value.
  • the uplink signal sending unit 204 is configured to send an uplink signal according to the transmission power.
  • the target downlink signal may include: CSI-RS, MRS, SS, PTRS, DMRS, and the like.
  • the uplink signal may include: a PUSCH, a PUCCH, an SRS, and the like.
  • Different uplink signals can correspond to different target downlink signals.
  • different target downlink signals may be used for downlink path loss estimation and the like.
  • different target downlink signals may be respectively associated.
  • the downlink signal determining unit 201 may first receive the first indication information from the network side before determining the target downlink signal for performing the downlink path loss estimation, where the first indication information is used to indicate whether the terminal device uses the downlink path loss. It is estimated to obtain the transmission power of the uplink signal.
  • the downlink signal determining unit 201 may further determine a target downlink signal for performing downlink path loss estimation.
  • One of the methods may be: the downlink signal determining unit 201 receives the second indication information from the network side, and determines the target downlink signal used for performing the downlink path loss estimation according to the second indication information.
  • the second indication information may carry the index information of the target downlink signal, and is used to indicate the index of the target downlink signal in the plurality of downlink signals that are configured in advance, so that the downlink signal determining unit 201 may be configured according to the index information.
  • the target downlink signal used for downlink path loss estimation is known.
  • the network side may pre-configure multiple CSI-RS resources through high-layer signaling, and indicate an index of one or more CSI-RS resources used for downlink path loss estimation.
  • the network side may transmit a plurality of synchronization signal blocks and indicate an index of the synchronization signal block in which the downlink path loss estimation is performed.
  • the network side may indicate multiple target downlink signals for downlink path loss estimation, the multiple destinations
  • the standard downlink signal may be the same type of downlink signal with different configurations, such as CSI-RS or SS, and may also contain different types of signals, such as CSI-RS and MRS.
  • the downlink signal determining unit 201 determines another method for performing the downlink channel loss estimation target downlink signal.
  • the downlink signal determining unit 201 measures the M candidate downlink signals, and selects N candidate downlink signals according to the measurement result. As the target downlink signal.
  • M is a positive integer greater than one and N is a positive integer less than or equal to M.
  • the M candidate downlink signals may be a plurality of downlink signals preconfigured by the network side and may be used for downlink path loss estimation, for example, multiple CSI-RS resources.
  • the M candidate downlink signals may be a plurality of downlink signals that are pre-agreed with the network side, for example, synchronization signals in a plurality of synchronization signal blocks transmitted at a predetermined resource location.
  • the downlink signal determining unit 201 can respectively measure the reception quality of the M candidate downlink signals, and select the N candidate downlink signals with the best reception quality as the target downlink signals.
  • the downlink signal determining unit 201 may separately measure the received power of the M candidate downlink signals, and select the N candidate downlink signals with the largest received power as the target downlink signals.
  • the downlink signal determining unit 201 may report the index information of the target downlink signal to the network side after the N candidate downlink signals are selected as the target downlink signal.
  • the downlink signal determining unit 201 may report the measurement result of the target downlink signal to the network side while reporting the index information of the target downlink signal to the network side.
  • the downlink signal determining unit 201 may report only the measurement result of the target downlink signal to the network side.
  • the downlink path loss estimating unit 202 may perform downlink path loss based on the determined target downlink signal. Estimate, thereby obtaining a downlink path loss estimate.
  • the downlink path loss estimating unit 202 may perform downlink path loss estimation according to the received power and the transmission power of the target downlink signal.
  • the downlink path loss estimating unit 202 may calculate an average value of the received power of each target downlink signal, and determine a downlink path loss according to the average value and the transmission power of each target downlink signal.
  • the estimated value, or the path loss estimation value corresponding to each target downlink signal is determined according to the received power and the transmission power of each target downlink signal, and the path loss estimation values corresponding to the target downlink signals are averaged to obtain the downlink path loss. estimated value.
  • the transmission power of the target downlink signal may be notified to the downlink path loss estimation unit 202 by using the downlink signaling in advance by the network side, for example, being carried in the configuration information of the CSI-RS resource and notified to the downlink path loss estimation unit 202.
  • the transmission powers of the plurality of target downlink signals are the same, and may be different if necessary.
  • the path loss estimate is usually expressed in dB. Assuming the received power is P1 and the transmit power is P2, the path loss estimate can be expressed as:
  • the downlink path loss estimating unit 202 may also determine a receiving beam for receiving the target downlink signal according to the recently determined beam for transmitting the uplink signal, and perform downlink path loss estimation based on the received target downlink signal.
  • the downlink path loss estimating unit 202 may use the beam shaping weight used for transmitting the uplink signal as the receiving shaping weight of the receiving target downlink signal, thereby measuring and receiving.
  • the received power to the target downlink signal is used to calculate the downlink path loss estimate.
  • the downlink path loss estimating unit 202 may also determine a correspondence between the transmitting beam and the receiving beam in advance, and determine a receiving beam according to the transmitting beam and the corresponding relationship.
  • the downlink path loss estimating unit 202 may further determine a receiving beam for receiving the target downlink signal according to the transmitting beam used for transmitting the SRS signal on the SRS resource indicated by the newly received SRI information, and based on the received target downlink signal. Perform downlink path loss estimation.
  • the downlink path loss estimating unit 202 may determine, according to the SRI in the DCI of the latest received scheduled uplink data, the SRS resource indicated by the SRI and the beam shaping weight used for transmitting the SRS signal on the SRS resource, and The weight is used as the receiving shaping weight of the receiving target downlink signal, thereby measuring the received power of the received target downlink signal, and is used for calculating the downlink path loss estimation value.
  • the downlink path loss estimating unit 202 may further perform downlink path loss estimation according to part of the antenna ports of the target downlink signal, for example, perform downlink path loss estimation according to one or two antenna ports in the target downlink signal.
  • the transmit power determining unit 203 may determine an uplink path loss estimated value according to the downlink path loss estimated value, and further determine the transmit power of the uplink signal according to the uplink path loss estimated value.
  • the network side may pre-configure a path loss offset value, and the transmit power determining unit 203 may calculate an uplink path loss estimated value according to the downlink path loss estimated value and the path loss offset value.
  • PL_UL PL_DL+k
  • PL_UL represents the uplink path loss estimation value
  • PL_DL represents the downlink path loss estimation value
  • k represents the path loss offset value
  • PL_UL can be used as formula (2)
  • the Pt is calculated according to the formula (2), that is, the transmission power of the uplink signal is calculated.
  • the uplink signal transmitting unit 204 can transmit the uplink signal according to the transmission power.
  • the uplink signal sending unit 204 may further determine a transmit beam used for transmitting the uplink signal according to the receive beam used to receive the target downlink signal, and then send the uplink signal by using the transmit beam.
  • the receiving shaping weight used for receiving the target downlink signal may be used as the transmitting beam shaping weight used for transmitting the uplink signal, thereby transmitting the uplink signal.
  • FIG. 3 is a schematic structural diagram of a network side device according to an embodiment of the present invention. As shown in FIG. 3, the method includes: a downlink signal sending unit 301.
  • the downlink signal sending unit 301 is configured to send the target downlink signal, so that the terminal device performs downlink path loss estimation based on the target downlink signal, and determines the transmit power of the uplink signal according to the downlink path loss estimation result.
  • the downlink signal sending unit 301 is further configured to: indicate, by the downlink instruction, the target downlink signal to the terminal device.
  • the downlink signal sending unit 301 can send the first indication information to the terminal device before transmitting the target downlink signal, where the first indication information is used to indicate whether the terminal device uses the downlink path loss estimation to obtain the transmission power of the uplink signal.
  • the downlink signal sending unit 301 may further send second indication information to the terminal device, where the second indication information is used to indicate a target downlink signal used for performing downlink path loss estimation.
  • the second indication information may carry index information of the target downlink signal.
  • multiple CSI-RS resources may be pre-configured through high layer signaling, and an index of one or more CSI-RS resources used for downlink path loss estimation may be indicated.
  • a plurality of sync signal blocks can be transmitted and an index of the sync signal block in which the downlink path loss estimate is used can be indicated.
  • the plurality of target downlink signals may be used for downlink path loss estimation, and the multiple target downlink signals may be downlink signals of the same type with different configurations, such as CSI-RS or SS, and may also include different types of signals, such as CSI. -RS and MRS.
  • the downlink signal transmitting unit 301 can determine the transmission beam used for transmitting the target downlink signal according to the reception beam used for the latest uplink signal, and further transmit the target downlink signal by using the transmission beam.
  • the terminal device may perform downlink path loss estimation based on the target downlink signal, obtain a downlink path loss estimation value, and determine the transmission power of the uplink signal according to the downlink path loss estimation value, and further, send the uplink signal according to the determined transmission power.
  • the network side device may further include: an uplink signal receiving unit 302.
  • the uplink signal receiving unit 302 is configured to receive an uplink signal sent by the terminal device.
  • the target downlink signal may include: CSI-RS, MRS, SS, PTRS, DMRS, and the like.
  • the uplink signal may include: a PUSCH, a PUCCH, an SRS, and the like.
  • Different uplink signals can correspond to different target downlink signals.
  • the invention also discloses an uplink power control system.
  • FIG. 4 is a schematic structural diagram of an embodiment of an uplink power control system according to the present invention. As shown in FIG. 4, the method includes: a terminal device 401 and a network side device 402.
  • terminal device 401 refers to the related description in the embodiment shown in FIG. 2.
  • network-side device 402 refer to the related description in the embodiment shown in FIG.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the methods of the various embodiments of the present invention. Part of the steps.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), A variety of media that can store program code, such as a disk or an optical disk.

Abstract

本发明公开了上行功率控制方法、设备及系统，终端设备可首先确定用于进行下行路损估计的目标下行信号，并基于确定出的目标下行信号进行下行路损估计，从而得到下行路损估计值，进而可根据下行路损估计值确定出上行信号的发送功率，并根据确定出的发送功率进行上行信号的发送，从而实现了波束赋形场景下的上行功率控制，进而提升了系统的性能。

Description

上行功率控制方法、设备及系统 技术领域
本发明涉及无线网络技术，特别涉及上行功率控制方法、设备及系统。
背景技术
在传统的长期演进(LTE，Long Term Evolution)系统中，终端设备确定上行信号的发送功率时，需要基于下行信号进行下行路损估计，根据下行路损进行路损补偿后确定上行信号的发送功率。
LTE系统中用于进行下行路损估计的下行信号不会进行窄带的发送或接收波束赋形，因此能够用得到的下行路损来估计上行路损。
而在新无线(NR，New Radio)系统中，上下行信号的传输都会进行窄带的波束赋形，因此上下行路损很可能不一致，即基于下行信号得到的下行路损和实际的上行路损可能会有很大的差别，不一定能直接用于上行的路损补偿，即不能直接用于上行功率控制。
因此，在波束赋形的场景下如何进行上行功率控制，将是一个亟待解决的问题。
发明内容
有鉴于此，本发明提供了上行功率控制方法、设备及系统。
具体技术方案如下：
一种上行功率控制方法，包括：
终端设备确定用于进行下行路损估计的目标下行信号；
所述终端设备基于所述目标下行信号进行下行路损估计，得到下行 路损估计值；
所述终端设备根据所述下行路损估计值确定出上行信号的发送功率；
所述终端设备根据所述发送功率发送所述上行信号。
一种上行功率控制方法，包括：
网络侧设备发送目标下行信号，以便终端设备基于所述目标下行信号进行下行路损估计，并根据下行路损估计结果确定出上行信号的发送功率。
一种终端设备，包括：下行信号确定单元、下行路损估计单元、发送功率确定单元以及上行信号发送单元；
所述下行信号确定单元，用于确定用于进行下行路损估计的目标下行信号；
所述下行路损估计单元，用于基于所述目标下行信号进行下行路损估计，得到下行路损估计值；
所述发送功率确定单元，用于根据所述下行路损估计值确定出上行信号的发送功率；
所述上行信号发送单元，用于根据所述发送功率发送所述上行信号。
一种网络侧设备，包括：下行信号发送单元；
所述下行信号发送单元，用于发送目标下行信号，以便终端设备基于所述目标下行信号进行下行路损估计，并根据下行路损估计结果确定出上行信号的发送功率。
一种上行功率控制系统，包括：
如以上所述的终端设备，以及，如以上所述的网络侧设备。
基于上述介绍可以看出，采用本发明所述方案，终端设备可首先确 定用于进行下行路损估计的目标下行信号，并基于确定出的目标下行信号进行下行路损估计，从而得到下行路损估计值，进而可根据下行路损估计值确定出上行信号的发送功率，并根据确定出的发送功率进行上行信号的发送，从而实现了波束赋形场景下的上行功率控制，进而提升了系统的性能。
附图说明
图1为本发明所述上行功率控制方法实施例的流程图。
图2为本发明所述终端设备实施例的组成结构示意图。
图3为本发明所述网络侧设备实施例的组成结构示意图。
图4为本发明所述上行功率控制系统实施例的组成结构示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚，下面结合附图和具体实施例对本发明进行详细描述。
图1为本发明所述上行功率控制方法实施例的流程图，如图1所示，包括以下具体实现方式：
在101中，终端设备确定用于进行下行路损估计的目标下行信号；
在102中，终端设备基于目标下行信号进行下行路损估计，得到下行路损估计值；
在103中，终端设备根据下行路损估计值确定出上行信号的发送功率；
在104中，终端设备根据确定出的发送功率发送上行信号。
其中，所述目标下行信号可包括：信道状态信息参考信号(CSI-RS，Channel State Information-Reference Signals)、移动性参考信号(MRS， Mobility Reference Signal)、同步信号(SS，Synchronous Signal)、相位跟踪参考信号(PTRS，Phase tracking reference signal)、解调参考信号(DMRS，Demodulation Reference Signal)等。
所述上行信号可包括：物理上行共享信道(PUSCH，Physical Uplink Shared Channel)信号、物理上行链路控制信道(PUCCH，Physical Uplink Control Channel)信号、信道探测参考信号(SRS，Sounding Reference Signal)等。
不同的上行信号可对应不同的目标下行信号。
也就是说，在实际应用中，终端设备确定不同上行信号的发送功率时，可以采用不同的目标下行信号来进行下行路损估计等。
比如，对于PUSCH信号和PUCCH信号，可以分别对应不同的目标下行信号，例如，对应不同的CSI-RS资源。
以下分别对图1所示实施例中的各部分的具体实现进行详细说明。
一)终端设备确定用于进行下行路损估计的目标下行信号
较佳地，终端设备确定用于进行下行路损估计的目标下行信号之前，可先接收来自网络侧的第一指示信息，第一指示信息用于指示终端设备是否采用下行路损估计来得到上行信号的发送功率，若指示结果为是，则终端设备可进一步确定用于进行下行路损估计的目标下行信号。
比如，网络侧可以通过第一指示信息来指示终端设备是采用上行路损估计还是下行路损估计来得到上行信号的发送功率。
上行路损估计值通常由网络侧指示给终端设备，而下行路损估计值则由终端设备测量得到。如果网络侧确定上下行路损是互易的，则可指示终端设备采用下行路损估计来得到上行信号的发送功率。
再比如，网络侧可根据实际情况，通过第一指示信息来指示终端设备是否能够采用下行路损估计来得到上行信号的发送功率。如果可以，则终端设备可采用下行路损估计来得到上行信号的发送功率，即更新上行信号的发送功率，否则，终端设备可基于之前确定的发送功率来发送上行信号，即不更新上行信号的发送功率，直到后续网络侧通知可以更新。
终端设备确定用于进行下行路损估计的目标下行信号的方式至少可包括以下两种。
1)方式一
终端设备接收来自网络侧的第二指示信息，根据第二指示信息确定用于进行下行路损估计的目标下行信号。
第二指示信息中可携带有目标下行信号的索引信息，用于指示所述目标下行信号在预先配置的多个下行信号中的索引，这样，终端设备根据所述索引信息，即可获知用于进行下行路损估计的目标下行信号。
第二指示信息可以通过高层信令承载，也可以通过下行控制信息(DCI，Downlink Control Information)信令承载。
比如，网络侧可以通过高层信令预先配置多个CSI-RS资源，并指示其中用于进行下行路损估计的一个或者多个CSI-RS资源的索引。
再比如，网络侧可以发送多个同步信号块(SS Block)，并指示其中用于进行下行路损估计的同步信号块的索引，终端设备可以基于所述索引对应的同步信号块中的同步信号或者同步信号块中的物理广播信道(PBCH，Physical Broadcast Channel)的DMRS进行下行路损估计。
网络侧可以指示多个目标下行信号用于下行路损估计，所述多个目 标下行信号可以是采用不同配置的同一类型的下行信号，如CSI-RS或SS，也可以包含不同类型的信号，如CSI-RS和MRS。
2)方式二
终端设备可对M个候选下行信号进行测量，根据测量结果，从中选出N个候选下行信号作为目标下行信号。
M为大于一的正整数，N为小于或等于M的正整数，M和N的具体取值均可根据实际需要而定，较佳地，N的取值可为1。
M个候选下行信号可以是网络侧预先配置的多个可以用于进行下行路损估计的下行信号，比如，多个CSI-RS资源。
或者，M个候选下行信号可以是与网络侧预先约定好的多个下行信号，比如，在约定好的资源位置上传输的多个同步信号块中的同步信号。
终端设备可分别对M个候选下行信号的接收质量进行测量，并从中选出接收质量最好的N个候选下行信号作为目标下行信号。
较佳地，接收质量可以是指参考信号接收质量(RSRQ，Reference Signal Receiving Quality)。
或者，终端设备可分别对M个候选下行信号的接收功率进行测量，并从中选出接收功率最大的N个候选下行信号作为目标下行信号。
较佳地，接收功率可以是指参考信号接收功率(RSRP，Reference Signal Receiving Power)。
终端设备在选定N个候选下行信号作为目标下行信号之后，可进一步将目标下行信号的索引信息上报给网络侧，以便网络侧获知所选定的目标下行信号。
比如，网络侧预先配置了多个CSI-RS资源，终端设备可以上报其 中用于下行路损估计的CSI-RS资源的索引信息。
另外，终端设备在向网络侧上报目标下行信号的索引信息的同时，还可以将目标下行信号的测量结果上报给网络侧。
比如，终端设备可以将目标下行信号的索引信息以及基于目标下行信号测量得到的RSRP一起通过高层信令上报给网络侧。
或者，终端设备也可以仅将目标下行信号的测量结果上报给网络侧。
二)终端设备基于目标下行信号进行下行路损估计，得到下行路损估计值
1)终端设备可以根据目标下行信号的接收功率和发送功率，进行下行路损估计，从而得到下行路损估计值。
比如，当目标下行信号的个数大于一时，终端设备可计算各目标下行信号的接收功率的平均值，根据所述平均值以及各目标下行信号的发送功率，确定出下行路损估计值，或者，终端设备可分别根据每个目标下行信号的接收功率及发送功率确定出每个目标下行信号对应的路损估计值，对各目标下行信号对应的路损估计值取平均，得到下行路损估计值。
当目标下行信号的个数等于一时，终端设备可直接根据目标下行信号的接收功率及发送功率确定出所述下行路损估计值。
目标下行信号的发送功率可由网络侧预先通过下行信令通知给终端设备，比如，携带在CSI-RS资源的配置信息中通知给终端设备。
通常来说，当目标下行信号的个数大于一时，多个目标下行信号的发送功率相同，当然，如果需要，也可以不同。
路损估计值通常用dB表示，假设接收功率为P1，发送功率为P2， 那么路损估计值可表示为：
PL(dB)＝10*lg(P1/P2)(dB)；    (1)
其中，PL即表示路损估计值。
2)终端设备也可以根据最近确定的发送上行信号的波束，确定出用于接收目标下行信号的接收波束，并基于接收到的目标下行信号进行下行路损估计。
比如，终端设备可以将最近一次发送上行信号所用的波束赋形权值，作为接收目标下行信号的接收赋形权值，从而测量接收到目标下行信号的接收功率，用于计算下行路损估计值。
所述上行信号可以是指103和104中的上行信号，也可以是指网络侧指示给终端设备的上行信号。
再比如，终端设备也可以预先确定发送波束和接收波束之间的对应关系，根据发送波束和所述对应关系确定接收波束。
3)终端设备还可以根据最新接收到的信道探测参考信号资源指示(SRI，SRS Resource Indication)信息所指示的SRS资源上发送SRS信号所采用的发送波束，确定出用于接收目标下行信号的接收波束，并基于接收到的目标下行信号进行下行路损估计。
SRI一般由网络侧通过调度上行数据传输的DCI指示给终端设备。
SRI用于指示终端设备之前发送SRS所用的多个SRS资源中的目标SRS资源。
比如，终端设备可根据最近一次接收到的调度上行数据的DCI中的SRI，确定出SRI所指示的SRS资源以及该SRS资源上发送SRS信号所采用的波束赋形权值，并将该权值作为接收目标下行信号的接收赋形权 值，从而测量接收到目标下行信号的接收功率，用于计算下行路损估计值。
4)终端设备还可以根据目标下行信号的部分天线端口进行下行路损估计。
比如，根据目标下行信号中的一个或者两个天线端口进行下行路损估计，具体选用哪些天线端口可根据实际需要而定。
三)终端设备根据下行路损估计值确定出上行信号的发送功率
在得到下行路损估计值之后，通常来说，终端设备可按照以下公式得到上行信号的发送功率。
Pt＝min{Pmax,a*PL+b}(dB)；    (2)
其中，Pt表示发送功率，Pmax表示上行允许的最大发送功率，PL表示下行路损估计值(dB为单位)，a表示路损补偿因子，通常由网络侧指示给终端设备，b表示其它功率控制参数，如何得到b为现有技术。
但是，公式(2)中，假设上行路损估计值和下行路损估计值相同，而在实际应用中，两者很可能是不同的，因此，需要对公式(2)进行一定的改进。
较佳地，终端设备可首先根据下行路损估计值确定出上行路损估计值，进而根据上行路损估计值确定出上行信号的发送功率。
比如，网络侧可预先配置一个路损偏移值，终端设备可根据下行路损估计值和路损偏移值计算得到上行路损估计值。
较佳地，可有：PL_UL＝PL_DL+k；    (3)
其中，PL_UL表示上行路损估计值，PL_DL表示下行路损估计值，k表示路损偏移值。
在按照公式(3)计算出PL_UL之后，可用PL_UL代替公式(2)中的PL，从而计算出Pt。
四)终端设备根据发送功率发送上行信号
终端设备在确定出上行信号的发送功率之后，即可根据该发送功率发送上行信号。
较佳地，终端设备还可根据接收目标下行信号所用的接收波束，确定出发送上行信号所用的发送波束，进而通过所述发送波束发送上行信号。
比如，可以将接收目标下行信号所用的接收赋形权值，作为发送上行信号所用的发送波束赋形权值，从而发送上行信号。
这样一来，可以使终端设备接收目标下行信号所用的接收波束，与发送上行信号所用的发送波束较为一致，从而令估计得到的下行路损与上行路损较为接近，进而可以将得到的下行路损用于上行功率控制。
至此，即完成了关于图1所示方法实施例的介绍。
图1所示方法实施例中，主要从终端设备一侧来对本发明所述方案进行说明，对于网络侧设备来说，网络侧设备可发送目标下行信号，以便终端设备基于目标下行信号进行下行路损估计，并根据下行路损估计结果确定出上行信号的发送功率。
其中，目标下行信号由网络侧设备通过下行指令指示给终端设备。
较佳地，网络侧设备可向终端设备发送第一指示信息，第一指示信息用于指示终端设备是否采用下行路损估计来得到上行信号的发送功率。
比如，网络侧设备可以通过第一指示信息来指示终端设备是采用上行路损估计还是下行路损估计来得到上行信号的发送功率。
再比如，网络侧设备可根据实际情况，通过第一指示信息来指示终端设备是否能够采用下行路损估计来得到上行信号的发送功率。
之后，网络侧设备设备可向终端设备发送第二指示信息，第二指示信息用于指示用于进行下行路损估计的目标下行信号。
第二指示信息中可携带有目标下行信号的索引信息。
比如，网络侧设备可以通过高层信令预先配置多个CSI-RS资源，并指示其中用于进行下行路损估计的一个或者多个CSI-RS资源的索引。
再比如，网络侧设备可以发送多个同步信号块，并指示其中用于进行下行路损估计的同步信号块的索引。
网络侧设备可以指示多个目标下行信号用于下行路损估计，所述多个目标下行信号可以是采用不同配置的同一类型的下行信号，如CSI-RS或SS，也可以包含不同类型的信号，如CSI-RS和MRS。
另外，网络侧设备设备还可预先配置多个可以用于进行下行路损估计的下行信号，比如，多个CSI-RS资源，或者，与终端设备预先约定好多个下行信号，比如，在约定好的资源位置上传输的多个同步信号块中的同步信号，这样，终端设备即可从上述多个下行信号中选出至少一个作为目标下行信号。
网络侧设备在发送目标下行信号时，可根据最近接收上行信号所用的接收波束，确定出发送目标下行信号所用的发送波束，进而利用所述发送波束发送目标下行信号。
比如，可以将最近接收上行信号所用的接收赋形权值，作为发送目标下行信号所用的发送波束赋形权值，从而发送目标下行信号。
终端设备可基于目标下行信号进行下行路损估计，得到下行路损估 计值，并可根据下行路损估计值确定出上行信号的发送功率，进而可根据确定出的发送功率发送上行信号，相应地，网络侧设备接收终端设备发送的上行信号。
所述目标下行信号可包括：CSI-RS、MRS、SS、PTRS、DMRS等。
所述上行信号可包括：PUSCH、PUCCH、SRS等。
不同的上行信号可对应不同的目标下行信号。
网络侧设备的具体实现可参照图1所示方法实施例中的相关说明，不再赘述。
以上是关于方法实施例的介绍，以下通过设备实施例，对本发明所述方案进行进一步说明。
图2为本发明所述终端设备实施例的组成结构示意图，如图2所示，包括：下行信号确定单元201、下行路损估计单元202、发送功率确定单元203以及上行信号发送单元204。
其中，下行信号确定单元201，用于确定用于进行下行路损估计的目标下行信号。
下行路损估计单元202，用于基于目标下行信号进行下行路损估计，得到下行路损估计值。
发送功率确定单元203，用于根据下行路损估计值确定出上行信号的发送功率。
上行信号发送单元204，用于根据发送功率发送上行信号。
所述目标下行信号可包括：CSI-RS、MRS、SS、PTRS、DMRS等。
所述上行信号可包括：PUSCH、PUCCH、SRS等。
不同的上行信号可对应不同的目标下行信号。
也就是说，在实际应用中，终端设备确定不同上行信号的发送功率时，可以采用不同的目标下行信号来进行下行路损估计等。
比如，对于PUSCH信号和PUCCH信号，可以分别对应不同的目标下行信号。
以下分别对图2所示各单元的具体实现进行介绍。
一)下行信号确定单元201
较佳地，下行信号确定单元201在确定用于进行下行路损估计的目标下行信号之前，可先接收来自网络侧的第一指示信息，第一指示信息用于指示终端设备是否采用下行路损估计来得到上行信号的发送功率。
若指示结果为是，则下行信号确定单元201可进一步确定用于进行下行路损估计的目标下行信号。
其中的一个方式可为：下行信号确定单元201接收来自网络侧的第二指示信息，根据第二指示信息确定用于进行下行路损估计的目标下行信号。
第二指示信息中可携带有目标下行信号的索引信息，用于指示所述目标下行信号在预先配置的多个下行信号中的索引，这样，下行信号确定单元201根据所述索引信息，即可获知用于进行下行路损估计的目标下行信号。
比如，网络侧可以通过高层信令预先配置多个CSI-RS资源，并指示其中用于进行下行路损估计的一个或者多个CSI-RS资源的索引。
再比如，网络侧可以发送多个同步信号块，并指示其中用于进行下行路损估计的同步信号块的索引。
网络侧可以指示多个目标下行信号用于下行路损估计，所述多个目 标下行信号可以是采用不同配置的同一类型的下行信号，如CSI-RS或SS，也可以包含不同类型的信号，如CSI-RS和MRS。
下行信号确定单元201确定用于进行下行路损估计的目标下行信号的另一方式可为：下行信号确定单元201对M个候选下行信号进行测量，根据测量结果，从中选出N个候选下行信号作为目标下行信号。
其中，M为大于一的正整数，N为小于或等于M的正整数。
M个候选下行信号可以是网络侧预先配置的多个可以用于下行路损估计的下行信号，比如，多个CSI-RS资源。
或者，M个候选下行信号可以是与网络侧预先约定好的多个下行信号，比如，在约定好的资源位置上传输的多个同步信号块中的同步信号。
下行信号确定单元201可分别对M个候选下行信号的接收质量进行测量，并从中选出接收质量最好的N个候选下行信号作为目标下行信号。
或者，下行信号确定单元201可分别对M个候选下行信号的接收功率进行测量，并从中选出接收功率最大的N个候选下行信号作为目标下行信号。
下行信号确定单元201在选出N个候选下行信号作为目标下行信号之后，还可将目标下行信号的索引信息上报给网络侧。
另外，下行信号确定单元201在向网络侧上报目标下行信号的索引信息的同时，还可以将目标下行信号的测量结果上报给网络侧。
再有，下行信号确定单元201也可以仅将目标下行信号的测量结果上报给网络侧。
二)下行路损估计单元202
下行路损估计单元202可基于确定出的目标下行信号进行下行路损 估计，从而得到下行路损估计值。
比如，下行路损估计单元202可根据目标下行信号的接收功率和发送功率，进行下行路损估计。
其中，当目标下行信号的个数大于一时，下行路损估计单元202可计算各目标下行信号的接收功率的平均值，根据所述平均值以及各目标下行信号的发送功率，确定出下行路损估计值，或者，分别根据每个目标下行信号的接收功率及发送功率确定出每个目标下行信号对应的路损估计值，对各目标下行信号对应的路损估计值取平均，得到下行路损估计值。
目标下行信号的发送功率可由网络侧预先通过下行信令通知给下行路损估计单元202，比如，携带在CSI-RS资源的配置信息中通知给下行路损估计单元202。
通常来说，当目标下行信号的个数大于一时，多个目标下行信号的发送功率相同，当然，如果需要，也可以不同。
路损估计值通常用dB表示，假设接收功率为P1，发送功率为P2，那么路损估计值可表示为：
PL(dB)＝10*lg(P1/P2)(dB)；    (1)
其中，PL即表示路损估计值。
下行路损估计单元202也可以根据最近确定的发送上行信号的波束，确定出用于接收目标下行信号的接收波束，并基于接收到的目标下行信号进行下行路损估计。
比如，下行路损估计单元202可以将最近一次发送上行信号所用的波束赋形权值，作为接收目标下行信号的接收赋形权值，从而测量接收 到目标下行信号的接收功率，用于计算下行路损估计值。
再比如，下行路损估计单元202也可以预先确定发送波束和接收波束之间的对应关系，根据发送波束和所述对应关系确定接收波束。
下行路损估计单元202还可以根据最新接收到的SRI信息所指示的SRS资源上发送SRS信号所采用的发送波束，确定出用于接收目标下行信号的接收波束，并基于接收到的目标下行信号进行下行路损估计。
比如，下行路损估计单元202可根据最近一次接收到的调度上行数据的DCI中的SRI，确定出SRI所指示的SRS资源以及该SRS资源上发送SRS信号所采用的波束赋形权值，并将该权值作为接收目标下行信号的接收赋形权值，从而测量接收到目标下行信号的接收功率，用于计算下行路损估计值。
在实际应用中，下行路损估计单元202还可以根据目标下行信号的部分天线端口进行下行路损估计，比如，根据目标下行信号中的一个或者两个天线端口进行下行路损估计。
三)发送功率确定单元203
发送功率确定单元203可根据下行路损估计值确定出上行路损估计值，进而根据上行路损估计值确定出上行信号的发送功率。
比如，网络侧可预先配置一个路损偏移值，发送功率确定单元203可根据下行路损估计值和路损偏移值计算得到上行路损估计值。
较佳地，可有：PL_UL＝PL_DL+k；    (3)
其中，PL_UL表示上行路损估计值，PL_DL表示下行路损估计值，k表示路损偏移值。
在按照公式(3)计算出PL_UL之后，可用PL_UL作为公式(2) 中的PL，按照公式(2)计算出Pt，即计算出上行信号的发送功率。
四)上行信号发送单元204
在确定出上行信号的发送功率之后，上行信号发送单元204即可根据该发送功率来发送上行信号。
较佳地，上行信号发送单元204还可根据接收目标下行信号所用的接收波束，确定出发送上行信号所用的发送波束，进而通过发送波束发送上行信号。
比如，可以将接收目标下行信号所用的接收赋形权值，作为发送上行信号所用的发送波束赋形权值，从而发送上行信号。
以上是关于终端设备实施例的介绍，本发明中同时公开了一种网络侧设备。
图3为本发明所述网络侧设备实施例的组成结构示意图，如图3所示，包括：下行信号发送单元301。
下行信号发送单元301，用于发送目标下行信号，以便终端设备基于目标下行信号进行下行路损估计，并根据下行路损估计结果确定出上行信号的发送功率。
下行信号发送单元301还可进一步用于，将目标下行信号通过下行指令指示给终端设备。
较佳地，下行信号发送单元301可在发送目标下行信号之前，向终端设备发送第一指示信息，第一指示信息用于指示终端设备是否采用下行路损估计来得到上行信号的发送功率。
下行信号发送单元301还可向终端设备发送第二指示信息，第二指示信息用于指示用于进行下行路损估计的目标下行信号。
第二指示信息中可携带有目标下行信号的索引信息。
比如，可以通过高层信令预先配置多个CSI-RS资源，并指示其中用于进行下行路损估计的一个或者多个CSI-RS资源的索引。
再比如，可以发送多个同步信号块，并指示其中用于进行下行路损估计的同步信号块的索引。
可以指示多个目标下行信号用于下行路损估计，所述多个目标下行信号可以是采用不同配置的同一类型的下行信号，如CSI-RS或SS，也可以包含不同类型的信号，如CSI-RS和MRS。
下行信号发送单元301在发送目标下行信号时，可根据最近接收上行信号所用的接收波束，确定出发送目标下行信号所用的发送波束，进而利用所述发送波束发送目标下行信号。
终端设备可基于目标下行信号进行下行路损估计，得到下行路损估计值，并可根据下行路损估计值确定出上行信号的发送功率，进而可根据确定出的发送功率发送上行信号。
相应地，如图3所示，网络侧设备中可进一步包括：上行信号接收单元302。
上行信号接收单元302，用于接收终端设备发送的上行信号。
所述目标下行信号可包括：CSI-RS、MRS、SS、PTRS、DMRS等。
所述上行信号可包括：PUSCH、PUCCH、SRS等。
不同的上行信号可对应不同的目标下行信号。
图2和图3所示设备实施例的具体工作流程请参照前述方法实施例中的相应说明，不再赘述。
本发明同时公开了一种上行功率控制系统。
图4为本发明所述上行功率控制系统实施例的组成结构示意图，如图4所示，包括：终端设备401以及网络侧设备402。
其中，终端设备401的具体实现请参照图2所示实施例中的相关说明，网络侧设备402的具体实现请参照图3所示实施例中的相关说明，不再赘述。
在本发明所提供的几个实施例中，应该理解到，所揭露的设备和方法等，可以通过其它的方式实现。例如，以上所描述的设备实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)或处理器(processor)执行本发明各个实施例所述方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、 磁碟或者光盘等各种可以存储程序代码的介质。
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。

Claims (50)

  1. 一种上行功率控制方法，其特征在于，包括：
    终端设备确定用于进行下行路损估计的目标下行信号；
    所述终端设备基于所述目标下行信号进行下行路损估计，得到下行路损估计值；
    所述终端设备根据所述下行路损估计值确定出上行信号的发送功率；
    所述终端设备根据所述发送功率发送所述上行信号。
  2. 根据权利要求1所述的方法，其特征在于，
    所述目标下行信号包括：信道状态信息参考信号CSI-RS、移动性参考信号MRS、同步信号SS、相位跟踪参考信号PTRS、解调参考信号DMRS。
  3. 根据权利要求1所述的方法，其特征在于，
    所述终端设备确定用于进行下行路损估计的目标下行信号之前，进一步包括：
    所述终端设备接收来自网络侧的第一指示信息，所述第一指示信息用于指示所述终端设备是否采用下行路损估计来得到所述上行信号的发送功率；
    若指示结果为是，则所述终端设备确定用于进行下行路损估计的目标下行信号。
  4. 根据权利要求1所述的方法，其特征在于，
    所述终端设备确定用于进行下行路损估计的目标下行信号包括：
    所述终端设备接收来自网络侧的第二指示信息，根据所述第二指示 信息确定所述目标下行信号。
  5. 根据权利要求4所述的方法，其特征在于，
    所述第二指示信息中携带有所述目标下行信号的索引信息，用于指示所述目标下行信号在预先配置的多个下行信号中的索引。
  6. 根据权利要求1所述的方法，其特征在于，
    所述终端设备确定用于进行下行路损估计的目标下行信号包括：
    所述终端设备对M个候选下行信号进行测量，根据测量结果，从中选出N个候选下行信号作为所述目标下行信号；
    M为大于一的正整数，N为小于或等于M的正整数。
  7. 根据权利要求6所述的方法，其特征在于，
    所述从中选出N个候选下行信号作为所述目标下行信号包括：
    从中选出接收质量最好的N个候选下行信号作为所述目标下行信号；
    或者，从中选出接收功率最大的N个候选下行信号作为所述目标下行信号。
  8. 根据权利要求6所述的方法，其特征在于，
    所述从中选出N个候选下行信号作为所述目标下行信号之后，进一步包括：
    将所述目标下行信号的索引信息和/或测量结果上报给网络侧。
  9. 根据权利要求1所述的方法，其特征在于，
    所述终端设备基于所述目标下行信号进行下行路损估计包括：
    所述终端设备根据所述目标下行信号的接收功率和发送功率，进行下行路损估计。
  10. 根据权利要求9所述的方法，其特征在于，
    所述终端设备根据所述目标下行信号的接收功率和发送功率，进行下行路损估计包括：
    当所述目标下行信号的个数大于一时，计算各目标下行信号的接收功率的平均值，根据所述平均值以及各目标下行信号的发送功率，确定出所述下行路损估计值，或者，分别根据每个目标下行信号的接收功率及发送功率确定出每个目标下行信号对应的路损估计值，对各目标下行信号对应的路损估计值取平均，得到所述下行路损估计值。
  11. 根据权利要求1所述的方法，其特征在于，
    所述终端设备基于所述目标下行信号进行下行路损估计包括：
    所述终端设备根据最近确定的发送上行信号的波束，确定出用于接收所述目标下行信号的接收波束，并基于接收到的所述目标下行信号进行下行路损估计。
  12. 根据权利要求1所述的方法，其特征在于，
    所述终端设备基于所述目标下行信号进行下行路损估计包括：
    所述终端设备根据最新接收到的信道探测参考信号资源指示SRI信息所指示的信道探测参考信号SRS资源上发送SRS信号所采用的发送波束，确定出用于接收所述目标下行信号的接收波束，并基于接收到的所述目标下行信号进行下行路损估计。
  13. 根据权利要求1所述的方法，其特征在于，
    所述终端设备基于所述目标下行信号进行下行路损估计包括：
    所述终端设备根据所述目标下行信号的部分天线端口进行下行路损 估计。
  14. 根据权利要求1所述的方法，其特征在于，
    所述终端设备根据所述下行路损估计值确定上行信号的发送功率包括：
    所述终端设备根据所述下行路损估计值确定出上行路损估计值；
    根据所述上行路损估计值确定出所述上行信号的发送功率。
  15. 根据权利要求1所述的方法，其特征在于，
    所述终端设备根据所述发送功率发送所述上行信号包括：
    所述终端设备根据接收所述目标下行信号所用的接收波束，确定出发送所述上行信号所用的发送波束。
  16. 根据权利要求1所述的方法，其特征在于，
    所述上行信号包括：物理上行共享信道PUSCH信号、物理上行链路控制信道PUCCH信号、信道探测参考信号SRS。
  17. 根据权利要求16所述的方法，其特征在于，
    不同的上行信号对应不同的目标下行信号。
  18. 一种上行功率控制方法，其特征在于，包括：
    网络侧设备发送目标下行信号，以便终端设备基于所述目标下行信号进行下行路损估计，并根据下行路损估计结果确定出上行信号的发送功率。
  19. 根据权利要求18所述的方法，其特征在于，
    所述目标下行信号包括：信道状态信息参考信号CSI-RS、移动性参考信号MRS、同步信号SS、相位跟踪参考信号PTRS、解调参考信号 DMRS。
  20. 根据权利要求18所述的方法，其特征在于，
    所述目标下行信号由网络侧设备通过下行指令指示给所述终端设备。
  21. 根据权利要求18所述的方法，其特征在于，
    所述网络侧设备发送目标下行信号包括：
    所述网络侧设备根据最近接收所述上行信号所用的接收波束，确定出发送所述目标下行信号所用的发送波束。
  22. 根据权利要求18所述的方法，其特征在于，
    所述网络侧设备发送目标下行信号之前，进一步包括：
    所述网络侧设备向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述终端设备是否采用下行路损估计来得到所述上行信号的发送功率。
  23. 根据权利要求18所述的方法，其特征在于，
    所述上行信号包括：物理上行共享信道PUSCH信号、物理上行链路控制信道PUCCH信号、信道探测参考信号SRS。
  24. 根据权利要求23所述的方法，其特征在于，
    不同的上行信号对应不同的目标下行信号。
  25. 一种终端设备，其特征在于，包括：下行信号确定单元、下行路损估计单元、发送功率确定单元以及上行信号发送单元；
    所述下行信号确定单元，用于确定用于进行下行路损估计的目标下行信号；
    所述下行路损估计单元，用于基于所述目标下行信号进行下行路损 估计，得到下行路损估计值；
    所述发送功率确定单元，用于根据所述下行路损估计值确定出上行信号的发送功率；
    所述上行信号发送单元，用于根据所述发送功率发送所述上行信号。
  26. 根据权利要求25所述的终端设备，其特征在于，
    所述目标下行信号包括：信道状态信息参考信号CSI-RS、移动性参考信号MRS、同步信号SS、相位跟踪参考信号PTRS、解调参考信号DMRS。
  27. 根据权利要求25所述的终端设备，其特征在于，
    所述下行信号确定单元进一步用于，
    在确定用于进行下行路损估计的目标下行信号之前，接收来自网络侧的第一指示信息，所述第一指示信息用于指示所述终端设备是否采用下行路损估计来得到所述上行信号的发送功率，若指示结果为是，则确定用于进行下行路损估计的目标下行信号。
  28. 根据权利要求25所述的终端设备，其特征在于，
    所述下行信号确定单元接收来自网络侧的第二指示信息，根据所述第二指示信息确定用于进行下行路损估计的目标下行信号。
  29. 根据权利要求28所述的终端设备，其特征在于，
    所述第二指示信息中携带有所述目标下行信号的索引信息，用于指示所述目标下行信号在预先配置的多个下行信号中的索引。
  30. 根据权利要求25所述的终端设备，其特征在于，
    所述下行信号确定单元对M个候选下行信号进行测量，根据测量结 果，从中选出N个候选下行信号作为所述目标下行信号；
    M为大于一的正整数，N为小于或等于M的正整数。
  31. 根据权利要求30所述的终端设备，其特征在于，
    所述下行信号确定单元选出接收质量最好的N个候选下行信号作为所述目标下行信号；
    或者，所述下行信号确定单元选出接收功率最大的N个候选下行信号作为所述目标下行信号。
  32. 根据权利要求30所述的终端设备，其特征在于，
    所述下行信号确定单元进一步用于，
    在选出N个候选下行信号作为所述目标下行信号之后，将所述目标下行信号的索引信息和/或测量结果上报给网络侧。
  33. 根据权利要求25所述的终端设备，其特征在于，
    所述下行路损估计单元根据所述目标下行信号的接收功率和发送功率，进行下行路损估计。
  34. 根据权利要求33所述的终端设备，其特征在于，
    当所述目标下行信号的个数大于一时，所述下行路损估计单元计算各目标下行信号的接收功率的平均值，根据所述平均值以及各目标下行信号的发送功率，确定出所述下行路损估计值，或者，分别根据每个目标下行信号的接收功率及发送功率确定出每个目标下行信号对应的路损估计值，对各目标下行信号对应的路损估计值取平均，得到所述下行路损估计值。
  35. 根据权利要求25所述的终端设备，其特征在于，
    所述下行路损估计单元根据最近确定的发送上行信号的波束，确定出用于接收所述目标下行信号的接收波束，并基于接收到的所述目标下行信号进行下行路损估计。
  36. 根据权利要求25所述的终端设备，其特征在于，
    所述下行路损估计单元根据最新接收到的信道探测参考信号资源指示SRI信息所指示的信道探测参考信号SRS资源上发送SRS信号所采用的发送波束，确定出用于接收所述目标下行信号的接收波束，并基于接收到的所述目标下行信号进行下行路损估计。
  37. 根据权利要求25所述的终端设备，其特征在于，
    所述下行路损估计单元根据所述目标下行信号的部分天线端口进行下行路损估计。
  38. 根据权利要求25所述的终端设备，其特征在于，
    所述发送功率确定单元根据所述下行路损估计值确定出上行路损估计值，根据所述上行路损估计值确定出所述上行信号的发送功率。
  39. 根据权利要求25所述的终端设备，其特征在于，
    所述上行信号发送单元进一步用于，
    根据接收所述目标下行信号所用的接收波束，确定出发送所述上行信号所用的发送波束。
  40. 根据权利要求25所述的终端设备，其特征在于，
    所述上行信号包括：物理上行共享信道PUSCH信号、物理上行链路控制信道PUCCH信号、信道探测参考信号SRS。
  41. 根据权利要求40所述的终端设备，其特征在于，
    不同的上行信号对应不同的目标下行信号。
  42. 一种网络侧设备，其特征在于，包括：下行信号发送单元；
    所述下行信号发送单元，用于发送目标下行信号，以便终端设备基于所述目标下行信号进行下行路损估计，并根据下行路损估计结果确定出上行信号的发送功率。
  43. 根据权利要求42所述的网络侧设备，其特征在于，
    所述目标下行信号包括：信道状态信息参考信号CSI-RS、移动性参考信号MRS、同步信号SS、相位跟踪参考信号PTRS、解调参考信号DMRS。
  44. 根据权利要求42所述的网络侧设备，其特征在于，
    所述下行信号发送单元进一步用于，将所述目标下行信号通过下行指令指示给所述终端设备。
  45. 根据权利要求42所述的网络侧设备，其特征在于，
    所述下行信号发送单元进一步用于，
    在发送所述目标下行信号之前，根据最近接收所述上行信号所用的接收波束，确定出发送所述目标下行信号所用的发送波束。
  46. 根据权利要求42所述的网络侧设备，其特征在于，
    所述下行信号发送单元进一步用于，
    在发送所述目标下行信号之前，向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述终端设备是否采用下行路损估计来得到所述上行信号的发送功率。
  47. 根据权利要求42所述的网络侧设备，其特征在于，
    所述网络侧设备中进一步包括：上行信号接收单元；
    所述上行信号接收单元，用于接收所述终端设备发送的所述上行信号。
  48. 根据权利要求42所述的网络侧设备，其特征在于，
    所述上行信号包括：物理上行共享信道PUSCH信号、物理上行链路控制信道PUCCH信号、信道探测参考信号SRS。
  49. 根据权利要求48所述的网络侧设备，其特征在于，
    不同的上行信号对应不同的目标下行信号。
  50. 一种上行功率控制系统，其特征在于，包括：
    如权利要求25～41中任一项所述的终端设备，以及，如权利要求42～49中任一项所述的网络侧设备。
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