WO2023284704A1 - 功率控制方法、装置、网络节点、终端及存储介质 - Google Patents

功率控制方法、装置、网络节点、终端及存储介质 Download PDF

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WO2023284704A1
WO2023284704A1 PCT/CN2022/105046 CN2022105046W WO2023284704A1 WO 2023284704 A1 WO2023284704 A1 WO 2023284704A1 CN 2022105046 W CN2022105046 W CN 2022105046W WO 2023284704 A1 WO2023284704 A1 WO 2023284704A1
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Prior art keywords
power
ssb
preamble
power control
parameter
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English (en)
French (fr)
Inventor
印亚超
张楠
曹伟
张晨晨
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ZTE Corp
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ZTE Corp
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Priority to KR1020237044805A priority Critical patent/KR20240010731A/ko
Priority to EP22841340.7A priority patent/EP4340433A4/en
Priority to US18/574,912 priority patent/US20240306097A1/en
Publication of WO2023284704A1 publication Critical patent/WO2023284704A1/zh
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/325—Power control of control or pilot channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/06—Airborne or Satellite Networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—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. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/48—TPC being performed in particular situations during retransmission after error or non-acknowledgment

Definitions

  • the present application relates to the technical field of wireless communication networks, for example, to a power control method, device, network node, terminal and storage medium.
  • the line-of-sight wireless transmission (Line of Sight, LoS) channel is the main channel between the serving base station on the network side and the adjacent cell and the UAV.
  • Line of Sight, LoS the line-of-sight wireless transmission
  • the UAV always adopts a single maximum power upper limit in different states, the maximum transmission power of the UAV in the air flight mode will be too high, which will also cause interference.
  • the flexibility of power control is poor, which further leads to greater link interference and waste of power.
  • the present application provides a power control method, device, network node, terminal and storage medium, so as to improve the flexibility of power control.
  • An embodiment of the present application provides a power control method, including:
  • the configuration signaling is used to indicate L groups of power control parameter sets associated with N Synchronization Signal/Physical Boardcast Signal (SSB) sets, where N is a positive integer, and L is a positive integer;
  • SSB Synchronization Signal/Physical Boardcast Signal
  • the embodiment of the present application also provides a power control method, including:
  • Receive configuration signaling where the configuration signaling is used to indicate L groups of power control parameter sets associated with N synchronous broadcast block SSB sets, where N is a positive integer and L is a positive integer;
  • the embodiment of the present application also provides a power control device, including:
  • the signaling sending module is configured to send configuration signaling, and the configuration signaling is used to indicate L groups of power control parameter sets associated with N SSB sets, where N is a positive integer and L is a positive integer;
  • the receiving module is configured to receive a random access preamble, the transmission power of the random access preamble is determined by the terminal according to the configuration signaling.
  • the embodiment of the present application also provides a power control device, including:
  • the signaling receiving module is configured to receive configuration signaling, and the configuration signaling is used to indicate L groups of power control parameter sets associated with N SSB sets, where N is a positive integer and L is a positive integer;
  • a power control module configured to determine transmit power according to the power configuration parameters.
  • An embodiment of the present application also provides a network node, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, and the processor implements the above power control method when executing the program.
  • An embodiment of the present application also provides a terminal, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, and the processor implements the above power control method when executing the program.
  • the embodiment of the present application also provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and the above-mentioned power control method is implemented when the program is executed by a processor.
  • FIG. 1 is a flowchart of a power control method provided by an embodiment
  • FIG. 2 is a schematic diagram of transmit power control of a camping source cell provided by an embodiment
  • FIG. 3 is a schematic diagram of another transmit power control of a camping source cell provided by an embodiment
  • FIG. 4 is a schematic diagram of transmit power control for switching cells provided by an embodiment
  • FIG. 5 is a flowchart of another power control method provided by an embodiment
  • Fig. 6 is a schematic structural diagram of a power control device provided by an embodiment
  • Fig. 7 is a schematic structural diagram of another power control device provided by an embodiment
  • FIG. 8 is a schematic diagram of a hardware structure of a network node provided by an embodiment
  • Fig. 9 is a schematic diagram of a hardware structure of a terminal provided by an embodiment.
  • the power control parameter adopted by the terminal is usually single.
  • the power control parameters may be related to its flight altitude, it still cannot guarantee that the transmission power in each direction is moderate.
  • the maximum transmission power of the UAV in the air flight mode is too high, which will cause interference to adjacent cells, which will further lead to greater link interference and waste power.
  • a power control method is provided, which can be applied to network nodes, such as base stations and access points that provide services for terminals.
  • Terminals mainly refer to flying terminals such as drones.
  • Terminals and network nodes The communication between them is mainly through the LoS channel.
  • FIG. 1 is a flowchart of a power control method provided by an embodiment. As shown in FIG. 1 , the method provided by this embodiment includes step 110 and step 120 .
  • step 110 a configuration signaling is sent, the configuration signaling is used to indicate L groups of power control parameter sets associated with N SSB sets, where N is a positive integer and L is a positive integer.
  • step 120 a random access preamble is received, and the transmission power of the random access preamble is determined by the terminal according to the configuration signaling.
  • an SSB set includes at least one SSB
  • a set of power control parameter sets includes at least one power control parameter.
  • the power control parameter set the maximum transmit power of the terminal can be limited, link interference can be reduced, and power waste can be avoided.
  • the power control parameter set includes at least one of the following parameters: a partial path loss compensation factor associated with the SSB; a physical random access channel (Physical Random Access Channel, PRACH) target received power associated with the SSB; The maximum power cap for the associated flight class.
  • a partial path loss compensation factor associated with the SSB a physical random access channel (Physical Random Access Channel, PRACH) target received power associated with the SSB.
  • PRACH Physical Random Access Channel
  • a partial path loss compensation factor can be configured for each SSB set by configuring signaling, denoted as ⁇ b,f,c , which specifically represents the partial path of the terminal for the uplink subband b activated on carrier f of cell c
  • the loss compensation factor, the values of ⁇ b, f, c and their association with the SSB set may be indicated by the network side.
  • the PRACH target receiving power can also be configured for each SSB set by configuring signaling, which is denoted as P PRACH, target, f, c , and the value of P PRACH, target, f, c and its association with the SSB set can be determined by the network
  • P PRACH, target, f, c are related to four parameters: the initial target received power of the preamble, the format of the preamble, the step size of the preamble power boost, and the maximum number of retransmissions of the preamble.
  • the value of one or more parameters and their association with the SSB set may also be indicated by the network side.
  • the maximum power upper limit corresponding to the flight level can also be configured for each SSB set by configuring signaling, denoted as
  • P CMAX,mode,f,c (i) which specifically indicates the maximum transmission power at the transmission moment i of cell c carrier f when the terminal is in a mode (that is, mode, including ground mode and air mode)
  • P CMAX,mode ,f,c (i) is associated with the SSB set
  • PCMAX,mode,f,c (i) can be based on the terminal's own location (which can be known by the terminal itself, for example, through the Global Positioning System (Global Positioning System, GPS) positioning) or Configured according to different states of terminal altitude (ground or air).
  • the PRACH target received power is associated with the following parameters: the initial target received power of the preamble, the format of the preamble, the step size of the power increase of the preamble, and the maximum number of retransmissions of the preamble; the power control parameter set also includes the preamble At least one parameter among the initial target received power, the format of the preamble, the step size of increasing the power of the preamble, and the maximum number of retransmissions of the preamble.
  • P CMAX,mode,f,c (i) preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1) ⁇ PREAMBLE_POWER_RAMPING_STEP, wherein, preambleReceivedTargetPower represents the initial target received power of the preamble, DELTA_PREAMBLE represents the format of the preamble, and PREAMBLE_POWER_RAMP represents the preamble power STEP Increase the step size, PREAMBLE_POWER_RAMPING_COUNTER indicates the maximum number of retransmissions of the preamble, and the four parameters can be configured by the upper layer.
  • the maximum power upper limit corresponding to the flight level is configured according to the power level or power offset associated with the SSB.
  • PCMAX,mode,f,c (i) can be configured or adjusted in the following ways: 1) Configure or adjust according to the power level, that is, the network side instructs the terminal to determine the maximum value corresponding to the flight level according to different power levels. Power, such as transmitting on the ground according to flight level PC2 (26dB), in the air (altitude reaches a certain threshold) according to flight level PC3 (23dB); 2) configure or adjust according to the power offset, that is, indicate the power adjustment offset offset, e.g. adjusted flight
  • the transmit power of the terminal is the minimum value of the first parameter and the second parameter; wherein, the first parameter is the maximum power upper limit corresponding to the flight level (ie P CMAX,mode,f,c );
  • the second parameter is the sum of the following two parameters: the PRACH target received power associated with the target SSB (ie P PRACH,target,f,c ), the product of the partial path loss compensation factor associated with the target SSB and the estimated value of the downlink path loss (ie ⁇ b,f,c ⁇ PL b,f,c ).
  • the transmit power of the terminal is determined according to the following formula:
  • P PRACH,b,f,c (i) min(P CMAX,mode,f,c (i),P PRACH,target,f,c + ⁇ b,f,c PL b,f,c ),
  • PL b, f, c are estimates of the downlink path loss of the uplink sub-band b activated by the cell c on the carrier f.
  • P CMAX, mode, f, c and ⁇ b, f, c can be obtained by broadcasting SIB or MIB system information through the network.
  • the configuration signaling is sent through SIB or MIB broadcast.
  • this embodiment is aimed at NR medium and large-scale antennas (Massive Multiple-In Multiple-Out, Massive MIMO), which can provide In the directional transmission of beamforming in the vertical and horizontal dimensions, the coverage is further improved. On this basis, the transmission power of the transmitting end can effectively reduce the interference to other neighboring cells and avoid energy waste.
  • Massive MIMO Massive MIMO
  • Fig. 2 is a schematic diagram of transmit power control of a camped on source cell provided by an embodiment.
  • the transmission power control process is described by taking a scenario in which the UAV stays in the source cell after being powered on as an example.
  • the network side broadcasts the partial path loss compensation factor and maximum transmit power associated with each SSB through the system information SIB or MIB.
  • the association relationship configured on the network side includes: ⁇ SSB0,SSB1,...,SSB7 ⁇ ---> ⁇ 0, ⁇ 1,..., ⁇ 7 ⁇ ; Assume that SSB0 and SSB1 map the maximum transmission power P CMAX,0,f,c (i) of the ground mode UAV, and SSB2 ⁇ SSB7 map the air mode UAV The maximum transmission power PCMAX,1,f,c (i) of the machine.
  • the UAV turns on at time t0, and selects the best beam mapped by SSB1 of cell A for initial random access after beam polling.
  • the UAV obtains the partial path loss compensation factor ⁇ 1 and the maximum transmit power P CMAX,0,f,c (t0) associated with the SSB1 broadcast on the network side and the PRACH target receive power P PRACH,target,f,c received from the broadcast, and Estimate downlink path loss based on SSB1.
  • the UAV determines the PRACH transmit power:
  • P PRACH,b,f,c (t0) min(P CMAX,0,f,c (t0),P PRACH,target,f,c + ⁇ 1 ⁇ PL b,f,c ).
  • the PRACH transmission power at t1, t2, and t3 is determined based on a similar process.
  • Fig. 3 is a schematic diagram of another transmit power control of a camped on source cell provided by an embodiment.
  • the transmission power control process is described by taking a scenario in which the UAV stays in the source cell after being powered on as an example.
  • the network side broadcasts the PRACH target received power and maximum transmit power associated with each SSB through the system information SIB or MIB.
  • the association relationship configured by the network side includes:
  • P PRACH,target,f,c includes four parameters: the initial target received power of the preamble, the format of the preamble, the step size of the preamble power boost, and the maximum number of retransmissions of the preamble, and P PRACH,target,f,c is associated with at least A relationship between a parameter and SSB is configured; assume that SSB0 and SSB1 map the maximum transmit power P CMAX,0,f,c (i) of the ground-mode UAV, and SSB2 ⁇ SSB7 map the maximum transmission power of the air-mode UAV. Transmit power P CMAX,1,f,c (i).
  • the UAV turns on at time t0, and selects the best beam mapped by SSB1 of cell A for initial random access after beam polling.
  • the UAV determines the PRACH transmit power:
  • P PRACH,b,f,c (i) min(P CMAX,mode,f,c (i),P PRACH,target,f,c + ⁇ 0 ⁇ PL b,f,c ).
  • the PRACH transmission power at t1, t2, and t3 is determined based on a similar process.
  • Fig. 4 is a schematic diagram of transmit power control for cell handover provided by an embodiment.
  • the transmit power control process is described by taking the scene where the UAV is switched to the target cell (handover from cell A to cell B) after starting up as an example.
  • the network side broadcasts the partial path loss compensation factor mapped by the SSB of each cell through the system information SIB or MIB or the PRACH target received power P PRACH,target,f,c and the maximum transmit power set mapped by each SSB
  • the association relationship configured on the network side includes: ⁇ SSB0, SSB1,...,SSB7 ⁇ in cell A---> ⁇ 0, ⁇ 1,..., ⁇ 7 ⁇ ; ⁇ SSB0,SSB1, ...,SSB7 ⁇ ---> ⁇ 0, ⁇ 1,..., ⁇ 7 ⁇ ; without loss of generality, it is assumed that the SSB0 and SSB1 of cell A and cell B both map the maximum transmit power P of the ground-mode UAV CMAX,0,f,c (i); without loss of generality, it is assumed that SSB2-SSB7 of cell A and cell B all map to the maximum transmit power P CMAX,1,f,c (i) of the aerial mode UAV.
  • UAV a switches from cell A to cell B, selects cell B after measuring SSB, and selects the best beam mapped by SSB5 for initial random access.
  • UAV a obtains the partial path loss compensation factor ⁇ 5 and the maximum transmission power P CMAX,1,f,c (i) mapped on the SSB5 broadcast by the network side and the PRACH target reception power P PRACH,target,1 that receives the broadcast, and Estimate downlink path loss based on SSB5.
  • the UAV determines the PRACH transmit power:
  • P PRACH,b,f,c (t0) min(P CMAX,1,f,c (t0),P PRACH,target,1 + ⁇ 5 ⁇ PL b,f,c ).
  • the PRACH transmission power at time i is determined based on a similar process.
  • a power control method is also provided, which can be applied to a terminal, mainly refers to a flying terminal such as a drone, and the communication between the terminal and a network node is mainly through a LoS channel. It should be noted that for technical details that are not exhaustively described in this embodiment, reference may be made to any of the foregoing embodiments.
  • FIG. 5 is a flowchart of another power control method provided by an embodiment. As shown in FIG. 5 , the method provided by this embodiment includes step 210 and step 220 .
  • Step 210 receiving configuration signaling, where the configuration signaling is used to indicate L groups of power control parameter sets associated with N SSB sets, where N is a positive integer and L is a positive integer;
  • Step 220 determine the transmission power according to the power configuration parameters
  • an SSB set includes at least one SSB
  • a set of power control parameter sets includes at least one power control parameter.
  • the power control parameters are associated with the SSB and indicated to the terminal.
  • the corresponding power control parameters can be used to determine the transmission power, which can flexibly control the transmission of the terminal in each direction power.
  • the maximum transmit power of the terminal can be limited, link interference can be reduced, and power waste can be avoided.
  • the power control parameters include at least one of the following parameters: a partial path loss compensation factor associated with the SSB; a PRACH target received power associated with the SSB; and a maximum power upper limit corresponding to a flight class associated with the SSB.
  • the PRACH target received power is associated with the following parameters: the initial target received power of the preamble, the format of the preamble, the step size of the power increase of the preamble, and the maximum number of retransmissions of the preamble;
  • the power control parameter set further includes at least one parameter among the initial target received power of the preamble, the format of the preamble, the step size of the preamble power boost, and the maximum number of retransmissions of the preamble.
  • the maximum power upper limit corresponding to the flight level is configured according to the power level or power offset associated with the SSB.
  • step 220 includes:
  • Step 2210 Select the target SSB through beam polling or determine the target SSB through handover signaling, and access the network through the beam mapped to the target SSB;
  • Step 2220 Determine transmit power according to the power control parameters associated with the target SSB.
  • the transmission power is the minimum value of the first parameter and the second parameter; wherein, the first parameter is the maximum power upper limit corresponding to the flight level; the second parameter is the following two The sum of parameters: the PRACH target received power associated with the target SSB, the product of the partial path loss compensation factor associated with the target SSB and the estimated value of the downlink path loss.
  • the configuration signaling is received via SIB or MIB broadcast.
  • Fig. 6 is a schematic structural diagram of a power control device provided by an embodiment. As shown in Figure 6, the power control device includes:
  • the signaling sending module 310 is configured to send configuration signaling, and the configuration signaling is used to indicate L groups of power control parameter sets associated with N synchronous broadcast block SSB sets, where N is a positive integer and L is a positive integer;
  • the receiving module 320 is configured to receive a random access preamble, the transmit power of the random access preamble is determined by the terminal according to the configuration signaling.
  • the power control device in this embodiment associates the power control parameters with the SSB and indicates them to the terminal by configuring signaling, so that the terminal can use the corresponding power control parameters to determine the transmit power when using different SSBs to access the network, and can Flexible control of the transmit power of the terminal in each direction.
  • the maximum transmit power of the terminal can be limited, link interference can be reduced, and power waste can be avoided.
  • the power control parameter set includes at least one of the following parameters:
  • the PRACH target received power is associated with the following parameters: the initial target received power of the preamble, the format of the preamble, the step size of the power increase of the preamble, and the maximum number of retransmissions of the preamble;
  • the power control parameter set further includes at least one parameter among the initial target received power of the preamble, the format of the preamble, the step size of the preamble power boost, and the maximum number of retransmissions of the preamble.
  • the maximum power upper limit corresponding to the flight level is configured according to the power level or power offset associated with the SSB.
  • the transmit power of the terminal is the minimum value of the first parameter and the second parameter; wherein,
  • the first parameter is the maximum power upper limit corresponding to the flight level
  • the second parameter is the sum of the following two parameters: the PRACH target received power associated with the target SSB, and the product of the partial path loss compensation factor associated with the target SSB and the estimated value of the downlink path loss.
  • the configuration signaling is sent through SIB or MIB broadcast.
  • the power control device proposed in this embodiment and the power control method proposed in the above-mentioned embodiments belong to the same inventive concept, and the technical details not described in detail in this embodiment can be referred to any of the above-mentioned embodiments, and this embodiment is equipped with and executes a power control method Same beneficial effect.
  • Fig. 7 is a schematic structural diagram of another power control device provided by an embodiment. As shown in Figure 7, the power control device includes:
  • the signaling receiving module 410 is configured to receive configuration signaling, where the configuration signaling is used to indicate L groups of power control parameter sets associated with N SSB sets, where N is a positive integer and L is a positive integer;
  • the power control module 420 is configured to determine transmit power according to the power configuration parameters.
  • an SSB set includes at least one SSB, and a set of power control parameter sets includes at least one power control parameter.
  • the power control parameters are associated with the SSB and indicated to the terminal.
  • the corresponding power control parameters can be used to determine the transmission power, which can flexibly control the transmission of the terminal in each direction power.
  • the maximum transmit power of the terminal can be limited, link interference can be reduced, and power waste can be avoided.
  • the power control parameters include at least one of the following parameters: a partial path loss compensation factor associated with the SSB; a PRACH target received power associated with the SSB; and a maximum power upper limit corresponding to a flight class associated with the SSB.
  • the PRACH target received power is associated with the following parameters: the initial target received power of the preamble, the format of the preamble, the step size of the power increase of the preamble, and the maximum number of retransmissions of the preamble;
  • the power control parameter set further includes at least one parameter among the initial target received power of the preamble, the format of the preamble, the step size of the preamble power boost, and the maximum number of retransmissions of the preamble.
  • the maximum power upper limit corresponding to the flight level is configured according to the power level or power offset associated with the SSB.
  • the power control module 420 includes:
  • the beam selection unit is configured to select the target SSB through beam polling or determine the target SSB through handover signaling, and access the network through the beam mapped by the target SSB;
  • a power determining unit configured to determine transmit power according to a power control parameter associated with the target SSB.
  • the transmission power is the minimum value of the first parameter and the second parameter; wherein,
  • the first parameter is the maximum power upper limit corresponding to the flight level
  • the second parameter is the sum of the following two parameters: the PRACH target received power associated with the target SSB, and the product of the partial path loss compensation factor associated with the target SSB and the estimated value of the downlink path loss.
  • the configuration signaling is received through SIB or MIB broadcast.
  • the power control device proposed in this embodiment and the power control method proposed in the above-mentioned embodiments belong to the same inventive concept, and the technical details not described in detail in this embodiment can be referred to any of the above-mentioned embodiments, and this embodiment is equipped with and executes a power control method Same beneficial effect.
  • FIG. 8 is a schematic diagram of the hardware structure of a network node provided in an embodiment.
  • the network node provided in the present application includes a memory 52, a processor 51 and A computer program stored in the memory and operable on the processor, when the processor 51 executes the program, implements the above power control method.
  • the network node can also include a memory 52; there can be one or more processors 51 in the network node, and one processor 51 is taken as an example in FIG. 8; the memory 52 is configured to store one or more programs; the one or more A program is executed by the one or more processors 51, so that the one or more processors 51 implement the power control method as described in the embodiment of the present application.
  • the network node also includes: communication means 53 , input means 54 and output means 55 .
  • the processor 51, the memory 52, the communication device 53, the input device 54 and the output device 55 in the network node may be connected through a bus or in other ways, and connection through a bus is taken as an example in FIG. 8 .
  • the input device 54 is configured to receive input numbers or character information, and generate key signal input related to user settings and function control of the network node.
  • the output device 55 may include a display device such as a display screen.
  • the communication device 53 may include a receiver and a transmitter.
  • the communication device 53 is configured to perform information sending and receiving communication according to the control of the processor 51 .
  • the memory 52 can be configured to store software programs, computer-executable programs and modules, such as the program instructions/modules corresponding to the power control method described in the embodiment of the present application (for example, the information in the power control device order the sending module 310 and the receiving module 320).
  • the memory 52 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the network node, and the like.
  • the memory 52 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • memory 52 may include memory located remotely relative to processor 51, and these remote memories may be connected to network nodes through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • FIG. 9 is a schematic diagram of the hardware structure of a terminal provided in an embodiment.
  • the terminal provided in the present application includes a memory 62, a processor 61 and a A computer program stored in the memory and executable on the processor.
  • the processor 61 executes the program, the above-mentioned power control method is implemented.
  • the terminal may also include a memory 62; there may be one or more processors 61 in the terminal, and one processor 61 is taken as an example in FIG. 9; the memory 62 is configured to store one or more programs; the one or more programs Executed by the one or more processors 61, so that the one or more processors 61 implement the power control method described in the embodiment of the present application.
  • the terminal also includes: a communication device 63 , an input device 64 and an output device 65 .
  • the processor 61, the memory 62, the communication device 63, the input device 64 and the output device 65 in the terminal may be connected through a bus or in other ways. In FIG. 9, connection through a bus is taken as an example.
  • the input device 64 is configured to receive input numbers or character information, and generate key signal input related to user settings and function control of the terminal.
  • the output device 65 may include a display device such as a display screen.
  • the communication device 63 may include a receiver and a transmitter.
  • the communication device 63 is configured to perform information sending and receiving communication according to the control of the processor 61 .
  • the memory 62 can be configured to store software programs, computer-executable programs and modules, such as the program instructions/modules corresponding to the power control method described in the embodiment of the present application (for example, the information in the power control device order receiving module 410 and power control module 420).
  • the memory 62 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and at least one application required by a function; the data storage area may store data created according to the use of the terminal, and the like.
  • the memory 62 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage devices.
  • the memory 62 may include a memory that is remotely located relative to the processor 61, and these remote memories may be connected to the terminal through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.
  • An embodiment of the present application further provides a storage medium, where the storage medium stores a computer program, and when the computer program is executed by a processor, the power control method described in any one of the embodiments of the present application is implemented.
  • the method includes: sending configuration signaling, where the configuration signaling is used to indicate L groups of power control parameter sets associated with N synchronous broadcast block SSB sets, where N is a positive integer and L is a positive integer; receiving random access A preamble, where the transmission power of the random access preamble is determined by the terminal according to the configuration signaling.
  • the method includes: receiving configuration signaling, where the configuration signaling is used to indicate L groups of power control parameter sets associated with N SSB sets, where N is a positive integer and L is a positive integer; according to the power configuration parameters Determine transmit power.
  • the computer storage medium in the embodiments of the present application may use any combination of one or more computer-readable media.
  • the computer readable medium may be a computer readable signal medium or a computer readable storage medium.
  • a computer-readable storage medium may be, for example, but not limited to: an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer-readable storage media include: electrical connections with one or more conductors, portable computer disks, hard disks, Random Access Memory (RAM), read-only memory (Read Only Memory, ROM), Erasable Programmable Read Only Memory (EPROM), flash memory, optical fiber, portable CD-ROM, optical storage device, magnetic storage device, or any suitable combination of the above .
  • a computer readable storage medium may be any tangible medium that contains or stores a program for use by or in connection with an instruction execution system, apparatus, or device.
  • a computer readable signal medium may include a data signal carrying computer readable program code in baseband or as part of a carrier wave. Such propagated data signals may take many forms, including but not limited to: electromagnetic signals, optical signals, or any suitable combination of the foregoing.
  • a computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. .
  • Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wires, optical cables, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.
  • any appropriate medium including but not limited to: wireless, wires, optical cables, radio frequency (Radio Frequency, RF), etc., or any suitable combination of the above.
  • Computer program codes for performing the operations of the present application may be written in one or more programming languages or combinations thereof, including object-oriented programming languages such as Java, Smalltalk, C++, and conventional A procedural programming language, such as the "C" language or similar programming language.
  • the program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
  • the remote computer can be connected to the user computer through any kind of network, including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (such as through the Internet using an Internet service provider). connect).
  • LAN local area network
  • WAN wide area network
  • connect such as AT&T, MCI, Sprint, EarthLink, MSN, GTE, etc.
  • user terminal covers any suitable type of wireless user equipment, such as a mobile phone, a portable data processing device, a portable web browser or a vehicle-mounted mobile station.
  • the various embodiments of the present application can be implemented in hardware or special purpose circuits, software, logic or any combination thereof.
  • some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software, which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.
  • Computer program instructions may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or written in any combination of one or more programming languages source or object code.
  • ISA Instruction Set Architecture
  • Any logic flow block diagrams in the drawings of the present application may represent program steps, or may represent interconnected logic circuits, modules and functions, or may represent a combination of program steps and logic circuits, modules and functions.
  • Computer programs can be stored on memory.
  • the memory may be of any type suitable for the local technical environment and may be implemented using any suitable data storage technology, such as but not limited to Read-Only Memory (ROM), Random Access Memory (RAM), Optical Memory devices and systems (Digital Video Disc (DVD) or Compact Disk (CD), etc.
  • Computer-readable media may include non-transitory storage media.
  • Data processors may be any Types, such as but not limited to general-purpose computers, special-purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), programmable logic devices (Field-Programmable Gate Array , FGPA) and processors based on multi-core processor architectures.
  • DSP Digital Signal Processing
  • ASIC Application Specific Integrated Circuit
  • FGPA programmable logic devices
  • processors based on multi-core processor architectures.

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Abstract

本申请提供一种功率控制方法、装置、网络节点、终端及存储介质。该方法发送配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；接收随机接入前导码，所述随机接入前导码的发射功率由终端根据所述配置信令确定。

Description

功率控制方法、装置、网络节点、终端及存储介质 技术领域
本申请涉及无线通信网络技术领域，例如涉及一种功率控制方法、装置、网络节点、终端及存储介质。
背景技术
新空口(New Radio，NR)系统中，终端在初始随机接入过程中沿用标准规定的完全路径损耗补偿，即α＝1。而在终端是无人机的情况下，网络侧服务基站和邻小区与无人机之间以视距无线传输(Line of Sight，LoS)信道为主，如果采用完全路径损耗补偿将导致无人机的发射功率大，对邻近小区产生干扰。此外，如果无人机在不同状态下始终采用单一的最大功率上限，将造成处于空中飞行模式无人机的最大发射功率偏高，也会造成干扰。功率控制的灵活性差，进一步导致了链路干扰较大并造成功率浪费。
发明内容
本申请提供一种功率控制方法、装置、网络节点、终端及存储介质，以提高功率控制的灵活性。
本申请实施例提供一种功率控制方法，包括：
发送配置信令，所述配置信令用于指示N个同步广播块(Synchronization Signal/Physical Boardcast Signal，SSB)集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
接收随机接入前导码，所述随机接入前导码的发射功率由终端根据所述配置信令确定。
本申请实施例还提供了一种功率控制方法，包括：
接收配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
根据所述功率配置参数确定发射功率。
本申请实施例还提供了一种功率控制装置，包括：
信令发送模块，设置为发送配置信令，所述配置信令用于指示N个SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
接收模块，设置为接收随机接入前导码，所述随机接入前导码的发射功率由终端根据所述配置信令确定。
本申请实施例还提供了一种功率控制装置，包括：
信令接收模块，设置为接收配置信令，所述配置信令用于指示N个SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
功率控制模块，设置为根据所述功率配置参数确定发射功率。
本申请实施例还提供了一种网络节点，包括：存储器、处理器以及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现上述的功率控制方法。
本申请实施例还提供了一种终端，包括：存储器、处理器以及存储在存储器上并可在处 理器上运行的计算机程序，所述处理器执行所述程序时实现上述的功率控制方法。
本申请实施例还提供了一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该程序被处理器执行时实现上述的功率控制方法。
附图说明
图1为一实施例提供的一种功率控制方法的流程图；
图2为一实施例提供的一种驻留源小区的发射功率控制的示意图；
图3为一实施例提供的另一种驻留源小区的发射功率控制的示意图；
图4为一实施例提供的一种切换小区的发射功率控制的示意图；
图5为一实施例提供的另一种功率控制方法的流程图；
图6为一实施例提供的一种功率控制装置的结构示意图；
图7为一实施例提供的另一种功率控制装置的结构示意图；
图8为一实施例提供的一种网络节点的硬件结构示意图；
图9为一实施例提供的一种终端的硬件结构示意图。
具体实施方式
下面结合附图和实施例对本申请进行说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本申请，而非对本申请的限定。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。另外还需要说明的是，为了便于描述，附图中仅示出了与本申请相关的部分而非全部结构。
在NR系统中，终端采用的功率控制参数通常是单一的。对于无人机而言，虽然功率控制参数可能与其飞行高度有关，但仍无法保证在每个方向上的发射功率适中。处于空中飞行模式的无人机的最大发射功率偏高，会对邻近小区产生干扰，进一步导致链路干扰较大并且造成功率浪费。
在本申请实施例中，提供一种功率控制方法，该方法可应用于网络节点，例如为终端提供服务的基站、接入点等，终端主要指无人机等可飞行终端，终端与网络节点之间主要通过LoS信道通信。
图1为一实施例提供的一种功率控制方法的流程图，如图1所示，本实施例提供的方法包括步骤110和步骤120。
在步骤110中，发送配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数。
在步骤120中，接收随机接入前导码，所述随机接入前导码的发射功率由终端根据所述配置信令确定。
本实施例中，一个SSB集合中包括至少一个SSB，一组功率控制参数集合中包括至少一种功率控制参数。通过配置信令将功率控制参数与SSB关联起来并指示给终端，使终端在使用不同SSB接入网络的情况下，可以采用所属的SSB集合关联的功率控制参数确定随机接入前导码的发射功率，从而灵活控制终端在每个方向上的发射功率。在此基础上，通过合理配置功率控制参数集合，可以限制终端的最大发射功率，降低链路干扰、避免功率浪费。
在一实施例中，功率控制参数集合包括以下参数至少之一：与SSB关联的部分路径损 耗补偿因子；与SSB关联的物理随机接入信道(Physical Random Access Channel，PRACH)目标接收功率；与SSB关联的飞行等级对应的最大功率上限。
本实施例中，通过配置信令可为每个SSB集合配置部分路径损耗补偿因子，记为α b,f,c，其具体表示终端对于小区c载波f上激活的上行子带b的部分路径损耗补偿因子，α b,f,c的值以及其与SSB集合之间的关联关系可由网络侧指示。
通过配置信令也可为每个SSB集合配置PRACH目标接收功率，记为P PRACH,target,f,c，P PRACH,target,f,c的值以及其与SSB集合之间的关联关系可由网络侧指示；此外，P PRACH,target,f,c与前导码初始目标接收功率、前导码格式、前导码功率提升步长、前导码最大重传数目这四种参数有关，这四种参数中的一种或多种参数的值以及其与SSB集合之间的关联关系也可以由网络侧指示。
通过配置信令还可以为每个SSB集合配置飞行等级对应的最大功率上限，记为
P CMAX,mode,f,c(i)，其具体表示终端处于模式(即mode，包括地面模式和空中模式)的情况下对于小区c载波f的传输时刻i的最大发射功率，P CMAX,mode,f,c(i)与SSB集合关联，P CMAX,mode,f,c(i)可根据终端自身位置(可由终端自身获知，例如通过全球定位系统(Global Positioning System，GPS)定位获知)或根据终端高度(地面或空中)的不同状态配置。
在一实施例中，PRACH目标接收功率关联于以下参数：前导码初始目标接收功率、前导码格式、前导码功率提升步长以及前导码最大重传数目；功率控制参数集合还包括所述前导码初始目标接收功率、所述前导码格式、所述前导码功率提升步长以及所述前导码最大重传数目中的至少一种参数。
本实施例中，P CMAX,mode,f,c(i)＝preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP，其中，preambleReceivedTargetPower表示前导码初始目标接收功率，DELTA_PREAMBLE表示前导码格式，PREAMBLE_POWER_RAMPING_STEP表示前导码功率提升步长，PREAMBLE_POWER_RAMPING_COUNTER表示前导码最大重传数目，四种参数可由高层配置。
在一实施例中，飞行等级对应的最大功率上限根据SSB关联的功率等级或功率偏移量配置。
本实施例中，P CMAX,mode,f,c(i)可通过以下方式配置或调整：1)按照功率等级配置或调整，即，网络侧指示终端根据不同的功率等级确定飞行等级对应的最大功率，例如在地面按照飞行等级PC2(26dB)发射，在空中(高度达到特定门限)按照飞行等级PC3(23dB)发射；2)按照功率偏移量配置或调整，即，指示功率调整偏移量offset，例如调整后的飞行
等级对应的最大功率上限记为P CMAX,modef,c′，则：
P CMAX,mode,f,c'＝P CMAX,mode,f,c+offset。
在一实施例中，终端的发射功率为第一参量和第二参量中的最小值；其中，第一参量为 所述飞行等级对应的最大功率上限(即P CMAX,mode,f,c)；第二参量为以下两种参量的和：目标SSB关联的PRACH目标接收功率(即P PRACH,target,f,c)，目标SSB关联的部分路径损耗补偿因子与下行路径损耗估计值的乘积(即α b,f,c·PL b,f,c)。
本实施例中，终端的发射功率根据如下公式确定：
P PRACH,b,f,c(i)＝min(P CMAX,mode,f,c(i),P PRACH,target,f,c+α b,f,c·PL b,f,c)，其中，PL b,f,c是对小区c在载波f上激活的上行子带b的下行路径损耗的估算。P CMAX,mode,f,c和α b,f,c可以通过网络广播SIB或MIB系统信息来获取。
在一实施例中，配置信令通过SIB或MIB广播发送。
相比于长期演进(Long Term Evolution，LTE)系统中只能采用非波束赋形的全向发送，本实施例针对NR中大规模天线(Massive Multiple-In Multiple-Out，Massive MIMO)，可提供在垂直与水平维度波束赋形的定向发送，覆盖得到进一步提升，在此基础上，发射端的发射功率可以有效降低对其它邻区的干扰和避免能量浪费。
图2为一实施例提供的一种驻留源小区的发射功率控制的示意图。本实施例以无人机开机后驻留在源小区的场景为例，对发射功率控制过程进行描述。如图2所示，网络侧通过系统信息SIB或MIB广播每个SSB关联的部分路径损耗补偿因子和最大发射功率，例如网络侧配置的关联关系包括：{SSB0,SSB1,...,SSB7}---＞{α0,α1,...,α7}；假设SSB0和SSB1映射地面模式无人机的最大发射功率P CMAX,0,f,c(i)，SSB2～SSB7映射空中模式无人机的最大发射功率P CMAX,1,f,c(i)。
无人机在t0时刻开机，并在波束轮询后选择在小区A的SSB1映射的最佳波束上进行初始随机接入。
无人机获取网络侧广播的SSB1关联的部分路径损耗补偿因子α1和最大发射功率P CMAX,0,f,c(t0)以及接收广播的PRACH目标接收功率P PRACH,target,f,c，并根据SSB1估算下行路径损耗。
在此基础上，无人机确定PRACH发射功率：
P PRACH,b,f,c(t0)＝min(P CMAX,0,f,c(t0),P PRACH,target,f,c+α 1·PL b,f,c)。
无人机在飞行上升过程中，在t1、t2、t3时刻的PRACH发射功率基于类似过程确定。
图3为一实施例提供的另一种驻留源小区的发射功率控制的示意图。本实施例以无人机开机后驻留在源小区的场景为例，对发射功率控制过程进行描述。如图3所示，网络侧通过系统信息SIB或MIB广播每个SSB关联的PRACH目标接收功率和最大发射功率，例如网络侧配置的关联关系包括：
{SSB0,SSB1,...,SSB7}---＞{P PRACH,target,0,P PRACH,target,1,...,P PRACH,target,7}，
P PRACH,target,f,c包含前导码初始目标接收功率、前导码格式、前导码功率提升步长、前导码最大重传数目这四个参数，且P PRACH,target,f,c关联的至少一种参数与SSB之间的关联关系被配置；假设SSB0和SSB1映射地面模式无人机的最大发射功率P CMAX,0,f,c(i)，SSB2～SSB7映射空中模式无人机的最大发射功率P CMAX,1,f,c(i)。
无人机在t0时刻开机，并在波束轮询后选择在小区A的SSB1映射的最佳波束上进行初始随机接入。
无人机获取网络侧广播的SSB1上映射的PRACH目标接收功率P PRACH,target,1和最大发射功率P CMAX,0,f,c(i)，并根据SSB1估算下行路损，其中，未收到部分路径损耗因子则采用完全路径损耗补偿，即α b,f,c＝1。
在此基础上，无人机确定PRACH发射功率：
P PRACH,b,f,c(i)＝min(P CMAX,mode,f,c(i),P PRACH,target,f,c+α 0·PL b,f,c)。
无人机在飞行上升过程中，在t1、t2、t3时刻的PRACH发射功率基于类似过程确定。
图4为一实施例提供的一种切换小区的发射功率控制的示意图。本实施例以无人机开机后切换至目标小区(从小区A切换至小区B)的场景为例，对发射功率控制过程进行描述。如图4所示，网络侧通过系统信息SIB或MIB广播每个小区的SSB映射的部分路径损耗补偿因子或者每个SSB映射的PRACH目标接收功率P PRACH,target,f,c以及最大发射功率集合的值，例如网络侧配置的关联关系包括：小区A中{SSB0,SSB1,...,SSB7}---＞{α0,α1,...,α7}；小区B中{SSB0,SSB1,...,SSB7}---＞{β0,β1,...,β7}；不失一般性地，假设小区A以及小区B的SSB0和SSB1均映射地面模式无人机的最大发射功率P CMAX,0,f,c(i)；不失一般性地，假设小区A以及小区B的SSB2～SSB7均映射空中模式无人机的最大发射功率P CMAX,1,f,c(i)。
无人机a从小区A飞行到小区B的过程中发生切换，通过测量SSB后选择小区B并选择在SSB5映射的最佳波束上进行初始随机接入。
无人机a获取网络侧广播的SSB5上映射的部分路径损耗补偿因子β5和最大发射功率P CMAX,1,f,c(i)以及接收广播的PRACH目标接收功率P PRACH,target,1，并根据SSB5估算下行路径损耗。
在此基础上，无人机确定PRACH发射功率：
P PRACH,b,f,c(t0)＝min(P CMAX,1,f,c(t0),P PRACH,target,1+β 5·PL b,f,c)。
无人机b和无人机c在小区切换的过程中，在时刻i的PRACH发射功率基于类似过程确定。
在本申请实施例中，还提供一种功率控制方法，该方法可应用于终端，主要指无人机等可飞行终端，终端与网络节点之间主要通过LoS信道通信。需要说明的是，未在本实施例中详尽描述的技术细节，可参见上述任意实施例。
图5为一实施例提供的另一种功率控制方法的流程图，如图5所示，本实施例提供的方法包括步骤210和步骤220。
步骤210，接收配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
步骤220，根据所述功率配置参数确定发射功率
本实施例中，一个SSB集合中包括至少一个SSB，一组功率控制参数集合中包括至少一种功率控制参数。根据配置信令将功率控制参数与SSB关联起来并指示给终端，在使用 不同SSB接入网络的情况下，可以采用相应的功率控制参数确定发射功率，能够灵活控制终端在每个方向上的发射功率。在此基础上，通过合理配置功率控制参数集合，可以限制终端的最大发射功率，降低链路干扰、避免功率浪费。
在一实施例中，所述功率控制参数包括以下参数至少之一：与SSB关联的部分路径损耗补偿因子；与SSB关联的PRACH目标接收功率；与SSB关联的飞行等级对应的最大功率上限。
在一实施例中，所述PRACH目标接收功率关联于以下参数：前导码初始目标接收功率、前导码格式、前导码功率提升步长以及前导码最大重传数目；
所述功率控制参数集合还包括所述前导码初始目标接收功率、所述前导码格式、所述前导码功率提升步长以及所述前导码最大重传数目中的至少一种参数。
在一实施例中，所述飞行等级对应的最大功率上限根据SSB关联的功率等级或功率偏移量配置。
在一实施例中，步骤220包括：
步骤2210：通过波束轮询选择目标SSB或者通过切换信令确定目标SSB，并通过所述目标SSB映射的波束接入网络；
步骤2220：根据所述目标SSB关联的功率控制参数确定发射功率。
在一实施例中，所述发射功率为第一参量和第二参量中的最小值；其中，所述第一参量为所述飞行等级对应的最大功率上限；所述第二参量为以下两种参量的和：目标SSB关联的PRACH目标接收功率，目标SSB关联的部分路径损耗补偿因子与下行路径损耗估计值的乘积。
在一实施例中，配置信令通过SIB或MIB广播接收。
本申请实施例还提供一种功率控制装置。图6为一实施例提供的一种功率控制装置的结构示意图。如图6所示，所述功率控制装置包括：
信令发送模块310，设置为发送配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
接收模块320，设置为，接收随机接入前导码，所述随机接入前导码的发射功率由终端根据所述配置信令确定。
本实施例的功率控制装置，通过配置信令将功率控制参数与SSB关联起来并指示给终端，使终端在使用不同SSB接入网络的情况下，可以采用相应的功率控制参数确定发射功率，能够灵活控制终端在每个方向上的发射功率。在此基础上，通过合理配置功率控制参数集合，可以限制终端的最大发射功率，降低链路干扰、避免功率浪费。
在一实施例中，所述功率控制参数集合包括以下参数至少之一：
与SSB关联的部分路径损耗补偿因子；与SSB关联的PRACH目标接收功率；与SSB关联的飞行等级对应的最大功率上限。
在一实施例中，所述PRACH目标接收功率关联于以下参数：前导码初始目标接收功率、前导码格式、前导码功率提升步长以及前导码最大重传数目；
所述功率控制参数集合还包括所述前导码初始目标接收功率、所述前导码格式、所述前导码功率提升步长以及所述前导码最大重传数目中的至少一种参数。
在一实施例中，所述飞行等级对应的最大功率上限根据SSB关联的功率等级或功率偏 移量配置。
在一实施例中，终端的发射功率为第一参量和第二参量中的最小值；其中，
所述第一参量为所述飞行等级对应的最大功率上限；
所述第二参量为以下两种参量的和：目标SSB关联的PRACH目标接收功率，目标SSB关联的部分路径损耗补偿因子与下行路径损耗估计值的乘积。
在一实施例中，所述配置信令通过SIB或MIB广播发送。
本实施例提出的功率控制装置与上述实施例提出的功率控制方法属于同一发明构思，未在本实施例中详尽描述的技术细节可参见上述任意实施例，并且本实施例具备与执行功率控制方法相同的有益效果。
本申请实施例还提供一种功率控制装置。图7为一实施例提供的另一种功率控制装置的结构示意图。如图7所示，所述功率控制装置包括：
信令接收模块410，设置为接收配置信令，所述配置信令用于指示N个SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
功率控制模块420，设置为根据所述功率配置参数确定发射功率。
本实施例的功率控制装置，一个SSB集合中包括至少一个SSB，一组功率控制参数集合中包括至少一种功率控制参数。根据配置信令将功率控制参数与SSB关联起来并指示给终端，在使用不同SSB接入网络的情况下，可以采用相应的功率控制参数确定发射功率，能够灵活控制终端在每个方向上的发射功率。在此基础上，通过合理配置功率控制参数集合，可以限制终端的最大发射功率，降低链路干扰、避免功率浪费。
在一实施例中，所述功率控制参数包括以下参数至少之一：与SSB关联的部分路径损耗补偿因子；与SSB关联的PRACH目标接收功率；与SSB关联的飞行等级对应的最大功率上限。
在一实施例中，所述PRACH目标接收功率关联于以下参数：前导码初始目标接收功率、前导码格式、前导码功率提升步长以及前导码最大重传数目；
所述功率控制参数集合还包括所述前导码初始目标接收功率、所述前导码格式、所述前导码功率提升步长以及所述前导码最大重传数目中的至少一种参数。
在一实施例中，所述飞行等级对应的最大功率上限根据SSB关联的功率等级或功率偏移量配置。
在一实施例中，功率控制模块420包括：
波束选择单元，设置为通过波束轮询选择目标SSB或者通过切换信令确定目标SSB，并通过所述目标SSB映射的波束接入网络；
功率确定单元，设置为根据所述目标SSB关联的功率控制参数确定发射功率。
在一实施例中，所述发射功率为第一参量和第二参量中的最小值；其中，
所述第一参量为所述飞行等级对应的最大功率上限；
所述第二参量为以下两种参量的和：目标SSB关联的PRACH目标接收功率，目标SSB关联的部分路径损耗补偿因子与下行路径损耗估计值的乘积。
在一实施例中，所述配置信令通过SIB或MIB广播接收。
本实施例提出的功率控制装置与上述实施例提出的功率控制方法属于同一发明构思，未在本实施例中详尽描述的技术细节可参见上述任意实施例，并且本实施例具备与执行功率控 制方法相同的有益效果。
本申请实施例还提供了一种网络节点，图8为一实施例提供的一种网络节点的硬件结构示意图，如图8所示，本申请提供的网络节点，包括存储器52、处理器51以及存储在存储器上并可在处理器上运行的计算机程序，处理器51执行所述程序时实现上述的功率控制方法。
网络节点还可以包括存储器52；该网络节点中的处理器51可以是一个或多个，图8中以一个处理器51为例；存储器52设置为存储一个或多个程序；所述一个或多个程序被所述一个或多个处理器51执行，使得所述一个或多个处理器51实现如本申请实施例中所述的功率控制方法。
网络节点还包括：通信装置53、输入装置54和输出装置55。
网络节点中的处理器51、存储器52、通信装置53、输入装置54和输出装置55可以通过总线或其他方式连接，图8中以通过总线连接为例。
输入装置54设置为接收输入的数字或字符信息，以及产生与网络节点的用户设置以及功能控制有关的按键信号输入。输出装置55可包括显示屏等显示设备。
通信装置53可以包括接收器和发送器。通信装置53设置为根据处理器51的控制进行信息收发通信。
存储器52作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请实施例所述功率控制方法对应的程序指令/模块(例如，功率控制装置中的信令发送模块310和接收模块320)。存储器52可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据网络节点的使用所创建的数据等。此外，存储器52可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器52可包括相对于处理器51远程设置的存储器，这些远程存储器可以通过网络连接至网络节点。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例还提供了一种网络节点，图9为一实施例提供的一种终端的硬件结构示意图，如图9所示，本申请提供的终端，包括存储器62、处理器61以及存储在存储器上并可在处理器上运行的计算机程序，处理器61执行所述程序时实现上述的功率控制方法。
终端还可以包括存储器62；该终端中的处理器61可以是一个或多个，图9中以一个处理器61为例；存储器62设置为存储一个或多个程序；所述一个或多个程序被所述一个或多个处理器61执行，使得所述一个或多个处理器61实现如本申请实施例中所述的功率控制方法。
终端还包括：通信装置63、输入装置64和输出装置65。
终端中的处理器61、存储器62、通信装置63、输入装置64和输出装置65可以通过总线或其他方式连接，图9中以通过总线连接为例。
输入装置64设置为接收输入的数字或字符信息，以及产生与终端的用户设置以及功能控制有关的按键信号输入。输出装置65可包括显示屏等显示设备。
通信装置63可以包括接收器和发送器。通信装置63设置为根据处理器61的控制进行信息收发通信。
存储器62作为一种计算机可读存储介质，可设置为存储软件程序、计算机可执行程序以及模块，如本申请实施例所述功率控制方法对应的程序指令/模块(例如，功率控制装置中的信令接收模块410和功率控制模块420)。存储器62可包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序；存储数据区可存储根据终端的使用所创建的数据等。此外，存储器62可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他非易失性固态存储器件。在一些实例中，存储器62可包括相对于处理器61远程设置的存储器，这些远程存储器可以通过网络连接至终端。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
本申请实施例还提供一种存储介质，所述存储介质存储有计算机程序，所述计算机程序被处理器执行时实现本申请实施例中任一所述的功率控制方法。该方法，包括：发送配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；接收随机接入前导码，所述随机接入前导码的发射功率由终端根据所述配置信令确定。或者，该方法包括：接收配置信令，所述配置信令用于指示N个SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；根据所述功率配置参数确定发射功率。
本申请实施例的计算机存储介质，可以采用一个或多个计算机可读的介质的任意组合。计算机可读介质可以是计算机可读信号介质或者计算机可读存储介质。计算机可读存储介质例如可以是，但不限于：电、磁、光、电磁、红外线、或半导体的系统、装置或器件，或者任意以上的组合。计算机可读存储介质的更具体的例子(非穷举的列表)包括：具有一个或多个导线的电连接、便携式计算机磁盘、硬盘、随机存取存储器(Random Access Memory，RAM)、只读存储器(Read Only Memory，ROM)、可擦式可编程只读存储器(Erasable Programmable Read Only Memory，EPROM)、闪存、光纤、便携式CD-ROM、光存储器件、磁存储器件、或者上述的任意合适的组合。计算机可读存储介质可以是任何包含或存储程序的有形介质，该程序可以被指令执行系统、装置或者器件使用或者与其结合使用。
计算机可读的信号介质可以包括在基带中或者作为载波一部分传播的数据信号，其中承载了计算机可读的程序代码。这种传播的数据信号可以采用多种形式，包括但不限于：电磁信号、光信号或上述的任意合适的组合。计算机可读的信号介质还可以是计算机可读存储介质以外的任何计算机可读介质，该计算机可读介质可以发送、传播或者传输用于由指令执行系统、装置或者器件使用或者与其结合使用的程序。
计算机可读介质上包含的程序代码可以用任何适当的介质传输，包括但不限于：无线、电线、光缆、无线电频率(Radio Frequency，RF)等等，或者上述的任意合适的组合。
可以以一种或多种程序设计语言或其组合来编写用于执行本申请操作的计算机程序代码，所述程序设计语言包括面向对象的程序设计语言，诸如Java、Smalltalk、C++，还包括常规的过程式程序设计语言，诸如“C”语言或类似的程序设计语言。程序代码可以完全地在用户计算机上执行、部分地在用户计算机上执行、作为一个独立的软件包执行、部分在用户计算机上部分在远程计算机上执行、或者完全在远程计算机或服务器上执行。在涉及远程计算机的情形中，远程计算机可以通过任意种类的网络，包括局域网(LAN)或广域网(WAN)，连接到用户计算机，或者，可以连接到外部计算机(例如利用因特网服务提供商来通过因特网连 接)。
以上所述，仅为本申请的示例性实施例而已，并非用于限定本申请的保护范围。
本领域内的技术人员应明白，术语用户终端涵盖任何适合类型的无线用户设备，例如移动电话、便携数据处理装置、便携网络浏览器或车载移动台。
一般来说，本申请的多种实施例可以在硬件或专用电路、软件、逻辑或其任何组合中实现。例如，一些方面可以被实现在硬件中，而其它方面可以被实现在可以被控制器、微处理器或其它计算装置执行的固件或软件中，尽管本申请不限于此。
本申请的实施例可以通过移动装置的数据处理器执行计算机程序指令来实现，例如在处理器实体中，或者通过硬件，或者通过软件和硬件的组合。计算机程序指令可以是汇编指令、指令集架构(Instruction Set Architecture，ISA)指令、机器指令、机器相关指令、微代码、固件指令、状态设置数据、或者以一种或多种编程语言的任意组合编写的源代码或目标代码。
本申请附图中的任何逻辑流程的框图可以表示程序步骤，或者可以表示相互连接的逻辑电路、模块和功能，或者可以表示程序步骤与逻辑电路、模块和功能的组合。计算机程序可以存储在存储器上。存储器可以具有任何适合于本地技术环境的类型并且可以使用任何适合的数据存储技术实现，例如但不限于只读存储器(Read-Only Memory，ROM)、随机访问存储器(Random Access Memory，RAM)、光存储器装置和系统(数码多功能光碟(Digital Video Disc，DVD)或光盘(Compact Disk，CD)等。计算机可读介质可以包括非瞬时性存储介质。数据处理器可以是任何适合于本地技术环境的类型，例如但不限于通用计算机、专用计算机、微处理器、数字信号处理器(Digital Signal Processing，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、可编程逻辑器件(Field-Programmable Gate Array，FGPA)以及基于多核处理器架构的处理器。

Claims (18)

  1. 一种功率控制方法，包括：
    发送配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
    接收随机接入前导码，所述随机接入前导码的发射功率由终端根据所述配置信令确定。
  2. 根据权利要求1所述的方法，其中，所述功率控制参数集合包括以下参数中的至少之一：
    与SSB关联的部分路径损耗补偿因子；与SSB关联的物理随机接入信道PRACH目标接收功率；与SSB关联的飞行等级对应的最大功率上限。
  3. 根据权利要求2所述的方法，其中，所述PRACH目标接收功率关联于以下参数：前导码初始目标接收功率、前导码格式、前导码功率提升步长，以及前导码最大重传数目；
    所述功率控制参数集合还包括所述前导码初始目标接收功率、所述前导码格式、所述前导码功率提升步长，以及所述前导码最大重传数目中的至少一种参数。
  4. 根据权利要求2所述的方法，其中，所述飞行等级对应的最大功率上限根据SSB关联的功率等级或功率偏移量配置。
  5. 根据权利要求2所述的方法，其中，所述终端的发射功率为第一参量和第二参量中的最小值；其中，
    所述第一参量为所述飞行等级对应的最大功率上限；
    所述第二参量为以下两种参量的和：目标SSB关联的PRACH目标接收功率，目标SSB关联的部分路径损耗补偿因子与下行路径损耗估计值的乘积。
  6. 根据权利要求1所述的方法，其中，所述配置信令通过系统信息块SIB或主系统信息块MIB广播发送。
  7. 一种功率控制方法，包括：
    接收配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
    根据所述功率配置参数确定发射功率。
  8. 根据权利要求7所述的方法，其中，所述功率控制参数包括以下参数中的至少之一：
    与SSB关联的部分路径损耗补偿因子；与SSB关联的物理随机接入信道PRACH目标接收功率；与SSB关联的飞行等级对应的最大功率上限。
  9. 根据权利要求8所述的方法，其中，所述PRACH目标接收功率关联于以下参数：前导码初始目标接收功率、前导码格式、前导码功率提升步长，以及前导码最大重传数目；
    所述功率控制参数集合还包括所述前导码初始目标接收功率、所述前导码格式、所述前导码功率提升步长，以及所述前导码最大重传数目中的至少一种参数。
  10. 根据权利要求9所述的方法，其中，所述飞行等级对应的最大功率上限根据SSB关联的功率等级或功率偏移量配置。
  11. 根据权利要求7所述的方法，其中，所述根据所述功率控制参数确定发射功率，包括：
    通过波束轮询选择目标SSB或者通过切换信令确定目标SSB，并通过所述目标SSB映射的波束接入网络；
    根据所述目标SSB关联的功率控制参数确定发射功率。
  12. 根据权利要求11所述的方法，其中，所述发射功率为第一参量和第二参量中的最小值；其中，
    所述第一参量为飞行等级对应的最大功率上限；
    所述第二参量为以下两种参量的和：目标SSB关联的PRACH目标接收功率，目标SSB关联的部分路径损耗补偿因子与下行路径损耗估计值的乘积。
  13. 根据权利要求7所述的方法，其中，所述配置信令通过系统信息块SIB或主系统信息块MIB广播接收。
  14. 一种功率控制装置，包括：
    信令发送模块，设置为发送配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
    接收模块，设置为接收随机接入前导码，所述随机接入前导码的发射功率由终端根据所述配置信令确定。
  15. 一种功率控制装置，包括：
    信令接收模块，设置为接收配置信令，所述配置信令用于指示N个同步广播块SSB集合关联的L组功率控制参数集合，其中，N为正整数，L为正整数；
    功率控制模块，设置为根据所述功率配置参数确定发射功率。
  16. 一种网络节点，包括存储器、处理器以及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现如权利要求1-6中任一项所述的功率控制方法。
  17. 一种终端，包括存储器、处理器以及存储在存储器上并可在处理器上运行的计算机程序，所述处理器执行所述程序时实现如权利要求7-13中任一项所述的功率控制方法。
  18. 一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1-13中任一所述的功率控制方法。
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