WO2019028923A1 - Procédé de commande de puissance et dispositif associé - Google Patents

Procédé de commande de puissance et dispositif associé Download PDF

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Publication number
WO2019028923A1
WO2019028923A1 PCT/CN2017/097281 CN2017097281W WO2019028923A1 WO 2019028923 A1 WO2019028923 A1 WO 2019028923A1 CN 2017097281 W CN2017097281 W CN 2017097281W WO 2019028923 A1 WO2019028923 A1 WO 2019028923A1
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WO
WIPO (PCT)
Prior art keywords
terminal
indication information
power
network device
path loss
Prior art date
Application number
PCT/CN2017/097281
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English (en)
Chinese (zh)
Inventor
才宇
曾勇波
王键
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2017/097281 priority Critical patent/WO2019028923A1/fr
Priority to CN202110679723.9A priority patent/CN113490260B/zh
Priority to CN201780079330.6A priority patent/CN110089161B/zh
Publication of WO2019028923A1 publication Critical patent/WO2019028923A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of wireless communications, and in particular, to a power control method and related equipment.
  • D2D device-to-device
  • Proximity Service Proximity Service
  • 3GPP 3GPP protocol
  • UE user equipment
  • the remote user equipment remote UE is connected to the network through the relay user equipment relay UE.
  • the remote UE can be a low-capacity device, such as a wearable device, which is characterized by small size, small battery capacity, and low radio frequency capability.
  • the relay UE can be a high-capability device, such as a high-capacity smart phone, which can be used as a relay node to assist a low-capacity device to connect to the network. In this case, the transmission power of the remote UE needs to be controlled to reduce the remote. The UE avoids interference to other UEs at the same time.
  • the present application provides a power control method for controlling power of a terminal device and reducing power consumption of the terminal device.
  • a first aspect of the present application provides a power control method, including:
  • the first terminal receives the first target indication information that is sent by the second terminal, where the first target indication information is used to enable the first terminal to determine the transmission power of the first terminal; the first terminal determines, according to the first target indication information, Transmission power.
  • the present application has the following advantages:
  • the first terminal receives the first target indication information sent by the second terminal, and the first terminal determines the transmission power of the first terminal according to the first target indication information. It can be understood that, by using the power control method in the present application, the first The terminal determines the transmission power of the first terminal by using the indication of the second terminal. Therefore, the first terminal determines the transmission power without receiving or detecting a signal on the downlink. At this time, the first terminal does not need to monitor the downlink. The first terminal can save power and reduce power consumption. Therefore, the power control method in the present application can determine the power of the terminal device and reduce the power consumption of the terminal device in the case where the terminal device does not receive or detect a signal on the downlink.
  • the first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information;
  • the first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to a path loss of the second terminal to the network device;
  • the second indication information is used to indicate a second power configuration parameter, the second The power configuration parameter is configured by the network device;
  • the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the third power configuration parameter, where the third power configuration parameter is configured by the network device;
  • the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device;
  • the fifth indication information is used to indicate the first Determining, by the terminal, the first terminal to the network device according to the second measurement configuration information Road damage.
  • the method further includes: determining, by the first terminal, the path loss of the second terminal to the first terminal; determining, by the first terminal, the transmission power according to the first target indication information, including:
  • the first terminal determines the transmission power according to the first target indication information and the path loss of the second terminal to the first terminal.
  • the determining, by the first terminal, the transmission power according to the first target indication information, and the path loss of the second terminal to the first terminal includes:
  • the first terminal determines the transmission power according to the first indication information, where the path loss difference is the path loss of the second terminal to the network device and the second terminal a difference between the path loss to the first terminal, the first threshold being pre-configured or configured by the network device; or
  • the first terminal determines the transmission power according to the second indication information, the third indication information, the fourth indication information, or the fifth indication information, where the second threshold is pre-configured or Network device configuration.
  • the first terminal determines the transmission power according to the first target indication information, where the first target indication information is the first indication information, including:
  • the first terminal of the first power information indicating the configuration parameters based on the first indication, determining that the transmission power is less than or equal to the transmission power P 1, P 1 which satisfies:
  • the P CMAX is the maximum output power of the first terminal, where the M is the bandwidth of the resource used by the first terminal to transmit a signal, and the P 0 is a first parameter configured by the network device, where the ⁇ is configured by the network device.
  • the second parameter is the maximum output power of the first terminal, where the M is the bandwidth of the resource used by the first terminal to transmit a signal, and the P 0 is a first parameter configured by the network device, where the ⁇ is configured by the network device.
  • the second parameter is the maximum output power of the first terminal, where the M is the bandwidth of the resource used by the first terminal to transmit a signal, and the P 0 is a first parameter configured by the network device, where the ⁇ is configured by the network device.
  • the first terminal determines the transmission power according to the first target indication information, where the first target indication information is the second indication information, including:
  • the P CMAX is the maximum output power of the first terminal, and the M is the bandwidth of the resource used by the first terminal to transmit signals.
  • the method further includes:
  • Determining, by the first terminal, the transmission power according to the first target indication information including:
  • the P CMAX is the maximum output power of the first terminal, and the M is the bandwidth of the resource used by the first terminal to transmit signals.
  • the first terminal determines the transmission power according to the first target indication information, where the first target indication information is the fourth indication information, including:
  • the measurement configuration information includes at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information;
  • the first terminal determines the transmission power according to the path loss of the first terminal to the network device.
  • the method further includes:
  • the first terminal Determining, by the first terminal, the second measurement configuration information, where the second measurement configuration information includes at least one of: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information; the first terminal is configured according to the first Determining the transmission power by the target indication information, the first terminal determining, according to the second measurement configuration information, a path loss of the first terminal to the network device; the first terminal according to the path loss of the first terminal to the network device , determine the transmission power.
  • the second measurement configuration information includes at least one of: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information
  • the first target indication information is the first indication information
  • the first power configuration parameter is a path loss of the second terminal to the network device
  • the first terminal is configured according to The first target indication information
  • the path loss of the second terminal to the first terminal determining the transmission power, includes: the first terminal according to the path loss of the second terminal to the network device, and the second terminal to the first The difference between the path losses of a terminal determines the transmission power.
  • a second aspect of the present application provides a power control method, including: determining, by a second terminal, first target indication information, where the first target indication information is used to enable the first terminal to determine transmission power of the first terminal; The terminal sends the first target indication information to the first terminal.
  • the present application has the following advantages:
  • the second terminal determines the first target indication information, and sends the target indication information to the first terminal, where the first target indication information is used to enable the first terminal to determine the transmission power of the first terminal. It can be understood that, by using the power control method in this application, the second terminal sends the first target indication information to the first terminal, so that the first terminal determines the transmission power of the first terminal, and therefore, the first terminal is not in the downlink.
  • the above transmission power is determined when the signal is received or detected on the road. At this time, the first terminal does not need to monitor the downlink, and the first terminal can save power and reduce power consumption. Therefore, the power control method in the present application can determine the power of the terminal device and reduce the power consumption of the terminal device in the case where the terminal device does not receive or detect a signal on the downlink.
  • the first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information;
  • the first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to a path loss of the second terminal to the network device; the second indication information is used to indicate a second power configuration parameter, where the The second power configuration parameter is configured for the network device; the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the second power configuration parameter, where the third power configuration parameter is configured for the network device.
  • the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device; the fifth indication information is used to indicate The first terminal determines a path loss of the first terminal to the network device according to the second measurement configuration information.
  • the method further includes: determining, by the second terminal, a path loss of the second terminal to the first terminal and a path loss of the second terminal to the network device; The sending, by the terminal, the first target indication information, the second terminal sending the first target to the first terminal according to the path loss of the second terminal to the network device, and the path loss of the second terminal to the first terminal Instructions.
  • the second terminal sends the first target indication information to the first terminal according to the path loss of the second terminal to the network device, and the path loss of the second terminal to the first terminal.
  • the second terminal sends the first indication information to the first terminal, where the path loss difference is the path loss of the second terminal to the network device, and the number of the path loss is greater than or equal to the first threshold.
  • the method further includes: determining, by the second terminal, the first power configuration according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal The parameter, or the second terminal determines the first power configuration parameter according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and the antenna gain of the network device.
  • the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information; and the second measurement configuration information includes at least one of the following information.
  • a third aspect of the present application provides a power control method, including: determining, by a network device, second target indication information, where the second target indication information includes at least one of the following indication information: sixth indication information and seventh indication information;
  • the sixth indication information is used to indicate a third power configuration parameter, where the third power configuration parameter is used to enable the first terminal to determine transmission power of the first terminal, and the seventh indication information is used to indicate second measurement configuration information, where The second measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device; the network device sends the second target indication information to the first terminal.
  • the present application has the following advantages:
  • the network device sends the second target indication information to the first terminal, which may be used to assist the first terminal to determine the transmission power of the first terminal without receiving or detecting the signal on the downlink. At this time, the first terminal does not need to monitor the downlink.
  • the first terminal can save power and reduce power consumption. Therefore, the power control method in the present application can determine the power of the terminal device and reduce the power consumption of the terminal device in the case where the terminal device does not receive or detect a signal on the downlink.
  • the second measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information.
  • the method further includes: sending, by the network device, third measurement configuration information to the second terminal, where the third measurement configuration information includes part or all information in the second measurement configuration information,
  • the second terminal is a terminal that communicates with the first terminal.
  • the third power configuration parameter is used to enable the first terminal to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • the fourth aspect of the present application provides a terminal, where the terminal is a first terminal, and includes: a receiving unit, configured to receive first target indication information sent by the second terminal, where the first target indication information is used to enable the first terminal Determining the transmission power of the first terminal; the first determining unit is configured to determine the transmission power according to the first target indication information.
  • the first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information;
  • First indication The information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to a path loss of the second terminal to the network device;
  • the second indication information is used to indicate a second power configuration parameter, the second power configuration parameter
  • the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the third power configuration parameter, where the third power configuration parameter is configured by the network device;
  • the indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device, and the fifth indication information is used to indicate that the first terminal is configured according to the The second measurement configuration information determines a path loss of the first terminal to the network device.
  • the terminal further includes:
  • a second determining unit configured to determine a path loss of the second terminal to the first terminal;
  • the first determining unit includes: a determining module, configured to use the first target indication information, and the second terminal to the first The path loss of the terminal determines the transmission power.
  • the determining module is specifically configured to: if the path loss difference is greater than or equal to the first threshold, determine the transmission power according to the first indication information, where the path loss difference is the second terminal a difference between a path loss to the network device and a path loss of the second terminal to the first terminal, where the first threshold is pre-configured or configured by the network device; or, if the path loss difference is less than the The second threshold is determined according to the second indication information, the third indication information, the fourth indication information, or the fifth indication information, where the second threshold is pre-configured or configured by the network device.
  • the first determining unit is specifically configured to:
  • the first power information indicating a configuration parameter based on the first indication, determining that the transmission power is less than or equal to the transmission power P 1, P 1 which satisfies:
  • the P CMAX is the maximum output power of the first terminal, where the M is the bandwidth of the resource used by the first terminal to transmit a signal, and the P 0 is a first parameter configured by the network device, where the ⁇ is configured by the network device.
  • the second parameter is the maximum output power of the first terminal, where the M is the bandwidth of the resource used by the first terminal to transmit a signal, and the P 0 is a first parameter configured by the network device, where the ⁇ is configured by the network device.
  • the second parameter is the maximum output power of the first terminal, where the M is the bandwidth of the resource used by the first terminal to transmit a signal, and the P 0 is a first parameter configured by the network device, where the ⁇ is configured by the network device.
  • the first determining unit is specifically configured to:
  • the P CMAX is the maximum output power of the first terminal, and the M is the bandwidth of the resource used by the first terminal to transmit signals.
  • the terminal further includes:
  • a third determining unit configured to determine the third power configuration parameter
  • the first determining unit is configured to: determine, according to the third power configuration parameter, that the transmission power is less than or equal to the transmission power P 3 , where the P 3 meets:
  • the P CMAX is the maximum output power of the first terminal, and the M is the bandwidth of the resource used by the first terminal to transmit signals.
  • the first determining unit is specifically configured to:
  • the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information. And determining the transmission power according to the path loss of the first terminal to the network device.
  • the terminal further includes: a fourth determining unit, configured to determine the second measurement configuration information, the second measurement
  • the configuration information includes at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information;
  • the first determining unit is configured to determine a path loss of the first terminal to the network device according to the second measurement configuration information, and determine the transmission power according to the path loss of the first terminal to the network device.
  • the first power configuration parameter is a path loss of the second terminal to the network device; The determining the transmission power according to the difference between the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
  • the fifth aspect of the present application provides a terminal, where the terminal is a second terminal, and includes: a first determining unit, configured to determine first target indication information, where the first target indication information is used to enable the first terminal to determine the first The transmission power of a terminal. And a sending unit, configured to send the first target indication information to the first terminal.
  • the first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information;
  • the first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to a path loss of the second terminal to the network device; the second indication information is used to indicate a second power configuration parameter, where the The second power configuration parameter is configured for the network device; the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the second power configuration parameter, where the third power configuration parameter is configured for the network device.
  • the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device; the fifth indication information is used to indicate The first terminal determines a path loss of the first terminal to the network device according to the second measurement configuration information.
  • the terminal further includes:
  • a second determining unit configured to determine a path loss of the second terminal to the first terminal and a path loss of the second terminal to the network device;
  • the sending unit includes: a sending module, configured to use the second terminal to the network device The path loss, and the path loss of the second terminal to the first terminal, send the first target indication information to the first terminal.
  • the sending module is specifically configured to:
  • the path loss difference is greater than or equal to the first threshold, sending the first indication information to the first terminal, where the path loss difference is the path loss of the second terminal to the network device and the second terminal to the first
  • the difference between the path loss of the terminal, the first threshold is configured in advance or configured by the network device; or, if the path loss difference is less than the second threshold, sending the second indication information to the first terminal, The third indication information, the fourth indication information, or the fifth indication information, where the second threshold is pre-configured or configured by the network device.
  • the terminal further includes:
  • a third determining unit configured to: according to the path loss of the second terminal to the network device, and the second terminal to the first terminal Path loss, determine the first power configuration parameter, or,
  • the third determining unit is further configured to determine the first power configuration parameter according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and an antenna gain of the network device.
  • the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information; and the second measurement configuration information includes at least one of the following information.
  • a sixth aspect of the present application provides a network device, including:
  • a determining unit configured to determine second target indication information, where the second target indication information includes at least one of the following indication information: sixth indication information and seventh indication information; the sixth indication information is used to indicate the third power configuration parameter
  • the third power configuration parameter is used to enable the first terminal to determine the transmission power of the first terminal;
  • the seventh indication information is used to indicate second measurement configuration information, where the second measurement configuration information is used to make the first terminal Determining the path loss of the first terminal to the network device.
  • the first sending unit is configured to send the second target indication information to the first terminal.
  • the second measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information.
  • the network device further includes: a second sending unit, configured to send third measurement configuration information to the second terminal, where the third measurement configuration information includes a part of the second measurement configuration information Information or all information, the second terminal is a terminal that communicates with the first terminal.
  • the third power configuration parameter is used to enable the first terminal to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • a seventh aspect of the present application provides a first terminal, including:
  • Receiver transmitter, memory, bus, and processor
  • the bus for connecting the receiver, the transmitter, the memory, and the processor
  • the memory is configured to store an operation instruction
  • the processor is configured to perform the operations of any one of the preceding claims 1 to 10 by calling the operation instruction.
  • the eighth aspect of the present application provides a second terminal, including:
  • Receiver transmitter, memory, bus, and processor
  • the bus for connecting the receiver, the transmitter, the memory, and the processor
  • the memory is configured to store an operation instruction
  • the processor is configured to perform the operations of any one of the preceding claims 11 to 16 by invoking the operation instruction.
  • the eighth aspect of the present application provides a network device, including:
  • Receiver transmitter, memory, bus, and processor
  • the bus for connecting the receiver, the transmitter, the memory, and the processor
  • the memory is configured to store an operation instruction
  • the processor is configured to perform the operations of any one of the preceding claims 17 to 20 by calling the operation instruction.
  • FIG. 1 is an application scenario of a solution according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an embodiment of a power control method in the present application.
  • FIG. 3 is a schematic diagram of another embodiment of a power control method in the present application.
  • FIG. 4 is a schematic diagram of another embodiment of a power control method in the present application.
  • FIG. 5 is a schematic diagram of another embodiment of a power control method in the present application.
  • FIG. 6 is a schematic diagram of another embodiment of a power control method in the present application.
  • FIG. 7 is a schematic diagram of another embodiment of a power control method in the present application.
  • FIG. 8 is a schematic diagram of another embodiment of a power control method according to the present application.
  • FIG. 9 is a schematic diagram of another embodiment of a power control method in the present application.
  • FIG. 10 is a schematic diagram of another embodiment of a power control method in the present application.
  • FIG. 11 is a schematic diagram of another embodiment of a power control method in the present application.
  • FIG. 12 is a schematic diagram of an embodiment of a first terminal in the present application.
  • FIG. 13 is a schematic diagram of another embodiment of a first terminal in the present application.
  • FIG. 14 is a schematic diagram of an embodiment of a second terminal in the present application.
  • FIG. 15 is a schematic diagram of another embodiment of a second terminal in the present application.
  • 16 is a schematic diagram of an embodiment of a network device in the present application.
  • FIG. 17 is a schematic diagram of another embodiment of a network device in the present application.
  • FIG. 18 is a schematic diagram showing the hardware structure of a communication device in the present application.
  • the present application provides a power control method for controlling power of a terminal device and reducing power consumption of the terminal device.
  • the present application is applied to a wireless communication system, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a Wideband Code Division Multiple Access Wireless (Wideband Code Division Multiple Access Wireless).
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Wideband Code Division Multiple Access Wireless Wideband Code Division Multiple Access Wireless
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • UMTS Universal Mobile Telecommunications System
  • new generation of wireless communication systems new generation, NR.
  • the present application describes various embodiments in conjunction with a terminal device.
  • the terminal device may be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal) intelligent terminal, etc.
  • the terminal device may be A Radio Access Network (RAN) communicates with one or more core networks.
  • the terminal device may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc.
  • the terminal device may also be a portable, portable, handheld, computer built-in or in-vehicle mobile device and a future 5G network.
  • Terminal devices in which they exchange voice or data with a wireless access network. Description of the terminal device:
  • the terminal device may further include a relay relay, and the data communication between the base station and the base station may be regarded as a terminal device, which will be introduced in a general sense in the present application.
  • the network device may be an LTE or an evolved base station (Evolutional Node B in the Long Term Evolution (LTE) system or an Authorized Auxiliary Access Long-term Evolution (LAA-LTE) system.
  • LTE Long Term Evolution
  • LAA-LTE Authorized Auxiliary Access Long-term Evolution
  • e-NodeB macro base station, micro base station (also referred to as "small base station"), pico base station, access point (AP) or transmission point (TP), or gNodeB (new generation Node B, new A generation of base stations) and so on.
  • FIG. 1 shows an application scenario in which the solution proposed by the embodiment of the present invention can be applied.
  • the scenario includes a cell base station 101, a user equipment 102 and a user equipment 103 that are within the coverage of the cell base station 101 and communicate with the cell base station 101.
  • the user equipment 103 can communicate with the cell base station 101 through the user equipment 102 access network.
  • an embodiment of the power control method in this application includes:
  • the second terminal determines first indication information.
  • the second terminal determines the first indication information according to the path loss of the second terminal to the network device.
  • the second terminal receives the reference signal sent by the network device, and determines the path loss of the second terminal to the network device according to the received power of the second terminal receiving or detecting the reference signal and the sending power of the reference signal.
  • the second terminal may receive indication information that is sent by the network device to indicate a transmission power of the reference signal.
  • the second terminal determines that the path loss of the second terminal to the network device is the difference between the transmit power of the reference signal and the received power of the reference signal.
  • the second terminal may receive the reference signal sent by the network device multiple times, filter the received power of the multiple reference signals, and determine the path loss of the second terminal to the network device according to the received power of the filtered reference signal.
  • the reference signal may be a cell-specific reference signal (CRS).
  • the second terminal may further receive indication information for indicating a path loss of the second terminal to the network device.
  • the indication information may be sent by the network device.
  • the second terminal sends the first indication information to the first terminal according to the path loss of the second terminal to the network device, where the first indication information is used to indicate the first power configuration parameter, and the first power configuration parameter is used according to the second terminal to the network.
  • the path loss of the device is determined. Specifically, the path loss is the abbreviation of the path loss.
  • the path loss includes the attenuation of the signal during the propagation process, and may also include other factors such as the antenna gain.
  • the path loss is the attenuation of the signal in propagation, or the path loss is the attenuation of the signal in propagation, the sum of the antenna gain at the signal transmitting end and the antenna gain at the signal receiving end.
  • the path loss mentioned below and the solution here The meaning of interpretation is the same and will not be repeated.
  • the determining of the first power parameter has the following determination manners:
  • the first type, the first power configuration parameter may be determined according to the path loss of the second terminal to the network device.
  • the target path loss value is a path loss of the second terminal to the network device, and then determined according to the target path loss value.
  • a power configuration parameter is a power configuration parameter.
  • the second power configuration parameter may be determined according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal, and specifically, using the formula 1 according to the second terminal to the network device
  • the path loss and the path loss of the second terminal to the first terminal are calculated to obtain a target path loss value, and then the first power configuration parameter is determined according to the target path loss value.
  • the target path loss value is PL 1
  • the formula 1 is as follows:
  • the PL relay-eNB is a path loss of the second terminal to the network device, and the PL relay-remote is a path loss of the second terminal to the first terminal.
  • the PL relay-eNB is the path loss of the second terminal to the network device
  • the PL relay-remote is the path loss of the second terminal to the first terminal
  • the G eNB is the antenna gain of the network device.
  • the first power configuration parameter may also be determined according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and the antenna gain of the network device, and specifically, using Equation 2
  • the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and the antenna gain of the network device are calculated to obtain a target path loss value, and then the first power configuration parameter is determined according to the target path loss value.
  • the target path loss value is PL 1
  • the formula 2 is as follows:
  • the PL relay-eNB is the path loss of the second terminal to the network device
  • the PL relay-remote is the path loss of the second terminal to the first terminal
  • the G eNB is the antenna gain of the network device
  • the G relay is the antenna of the second terminal.
  • Gain, G remote is the antenna gain of the first terminal.
  • the first power configuration parameter may also be a path loss according to the second terminal to the network device, a path loss of the second terminal to the first terminal, an antenna gain of the network device, an antenna gain of the first terminal, and a second terminal.
  • the antenna gain is determined, specifically, using Equation 3 according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, the antenna gain of the network device, the antenna gain of the first terminal, and the second terminal.
  • the antenna gain of the device is calculated to obtain a target path loss value, and then the first power configuration parameter is determined according to the target path loss value.
  • the target path loss value is PL 1
  • the formula 3 is as follows:
  • the first power configuration parameter determined according to the target path loss PL 1 may be PL 1 or ⁇ * PL 1 may also be P 0 + ⁇ *PL 1 , and may be other parameters, and no limitation is imposed on this application.
  • the P 0 is the first parameter of the network device configuration
  • the parameter is the second parameter configured by the network device.
  • the first parameter P 0 can be a power value or other parameters, and the application does not impose any limitation.
  • the second parameter ⁇ may be a path loss compensation coefficient or other parameters, and the present application also does not impose any restrictions.
  • step 201 the method for determining the path loss of the second terminal to the first terminal by the second terminal is similar to that in step 202, and details are not described herein again.
  • the second terminal sends the first indication information to the first terminal.
  • the second terminal determines a path loss of the second terminal to the first terminal.
  • a determining manner is that the second terminal receives the reference signal sent by the first terminal, and determines the path loss of the second terminal to the first terminal according to the received power of the second terminal receiving or detecting the reference signal and the sending power of the reference signal.
  • the second terminal may receive indication information that is sent by the first terminal to indicate a transmission power of the reference signal.
  • the second terminal determines that the path loss of the second terminal to the first terminal is the difference between the transmission power of the reference signal and the received power of the reference signal.
  • the second terminal may receive the reference signal sent by the first terminal multiple times, filter the received power of the multiple reference signals, and determine the path of the second terminal to the first terminal according to the received power of the filtered reference signal. damage.
  • Another determining manner is that the second terminal sends the reference signal to the first terminal, and determines the path loss of the second terminal to the first terminal according to the transmit power of the reference signal and the received power of the first terminal receiving the reference signal.
  • the second terminal may receive indication information that is sent by the first terminal to indicate the received power of the reference signal.
  • the second terminal determines that the path loss of the second terminal to the first terminal is the difference between the transmission power of the reference signal and the received power of the reference signal.
  • the reference signal may be a reference signal transmitted in a physical sidelink discovery channel (PSDCH), a reference signal transmitted in a physical side shared channel (PSSCH), a reference signal transmitted in a physical sidelink control channel (PSCCH), a reference signal transmitted in a physical sidelink broadcast channel (PSBCH), and a side synchronization signal (SLSS) Any of them.
  • PSDCH physical sidelink discovery channel
  • PSSCH physical side shared channel
  • PSCCH physical sidelink control channel
  • PSBCH physical sidelink broadcast channel
  • SLSS side synchronization signal
  • the second terminal may further receive indication information for indicating a path loss of the second terminal to the first terminal.
  • the indication information may be sent by the first terminal, or sent by the first terminal to the network device, and then sent by the network device to the second terminal.
  • the second terminal sends the first indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal. Specifically, the second terminal compares the path loss difference with the When the threshold value is greater than or equal to the first threshold, the second terminal sends the first indication information to the first terminal, where the path loss difference is the second terminal to the network device's path loss minus the second The difference between the path loss from the terminal to the first terminal, the path loss difference below The meanings are the same here, and will not be described below.
  • the first threshold is pre-configured or configured by the network device, or preset.
  • the first threshold may or may not be equal to the second threshold in the following, and no limitation is imposed in the present application.
  • the first terminal determines, according to the first power parameter indicated by the first indication information, a transmission power of the first terminal.
  • the first terminal After the first terminal receives the first indication information sent by the second terminal, the first terminal determines the transmission power of the first terminal according to the first power configuration parameter indicated by the first indication information.
  • the first terminal may determine, according to the first power configuration parameter indicated by the first indication information, the first terminal transmission signal according to at least one of a bandwidth and a modulation and coding scheme (MCS) of the transmission signal. Transmission power.
  • the MCS may be an MCS parameter or a parameter reflecting the MCS (such as the ratio of the size of the code block to the number of resource elements).
  • the first terminal determines, according to the first power configuration parameter, the transmission power of the first terminal, so that the transmission power of the first terminal is less than or equal to the power P 1 , where the P 1 satisfies any one of the following formulas 4 to 6. formula:
  • the P CMAX is the maximum output power of the first terminal.
  • P CMAX can also be a configured maximum output power, and the first terminal can determine P CMAX according to parameters configured by the network device.
  • M is the bandwidth of the transmission signal using a first terminal of the first parameter P 0 of the configuration of a network device
  • a second parameter ⁇ is configured the network device
  • a first parameter P 0 It can be a power value or other parameters, and there is no restriction on this application.
  • the second parameter ⁇ may be a path loss compensation coefficient or other parameters, and the present application also does not impose any restrictions.
  • the first terminal further determines the transmission power of the first terminal according to the MCS
  • the first terminal determines the transmission power of the first terminal according to the first power configuration parameter, so that the transmission power of the first terminal is less than or equal to the power.
  • P 1 wherein the P 1 satisfies any one of the following formulas 7 to 9:
  • ⁇ TF is a parameter determined according to MCS.
  • the power P 1 when the first power configuration parameter indicated by the first power configuration information is PL 1 , the power P 1 satisfies the formula 4 or the formula VII; when the first power configuration parameter indicated by the first indication information is ⁇ *PL 1 , the power P 1 satisfies the formula 6 or the formula 9; when the first power configuration parameter indicated by the first indication information is P 0 + ⁇ *PL 1 , the power P 1 satisfies the formula 5 or the formula 8, of course, except In addition to the above three formulas, other formulas may also be used, and no limitation is imposed on this application.
  • the second terminal when the second terminal determines that the path loss difference is greater than or equal to the first threshold, the second terminal sends the first indication information to the first terminal, where the first terminal is configured according to the first indication information.
  • the indicated first power configuration parameter determines a transmission power of the first terminal. Enabling the first terminal to receive or detect signals on the downlink The transmission power of the first terminal is determined.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines first indication information.
  • the first indication information is used to indicate a first power configuration parameter, and the first power configuration parameter is determined according to a path loss of the second terminal to the network device.
  • the first power configuration parameter is a path loss of the second terminal to the network device.
  • the second terminal sends the first indication information to the first terminal.
  • the second terminal After the second terminal determines the first indication information, the second terminal sends the first indication information to the first terminal.
  • the first terminal determines, according to the first power configuration parameter indicated by the first indication information, a transmit power of the first terminal.
  • the first terminal After the first terminal receives the first indication information sent by the second terminal, the first terminal determines the transmission power of the first terminal according to the first power configuration parameter indicated by the first indication information.
  • the first terminal determines the first power value according to the first power configuration parameter, and the determining method is similar to determining the first power configuration parameter according to the path loss of the second terminal to the network device in step 201, and details are not described herein again.
  • the first terminal determines the transmission power of the first terminal according to the first power value, and the determining method is similar to the determining the transmission power of the first terminal according to the first power configuration parameter in step 203, and details are not described herein again.
  • the first terminal determines the transmission power of the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
  • the first terminal compares the path loss difference with the first threshold, and when the path loss difference is greater than or equal to the first threshold, the first terminal determines the first according to the first power configuration parameter indicated by the first indication information.
  • the transmission power of the terminal is the first terminal.
  • the second terminal sends the first indication information to the first terminal, where the first terminal determines that the path loss difference is greater than or equal to the first threshold, the first terminal is configured according to the first indication information.
  • the indicated first power configuration parameter determines a transmission power of the first terminal.
  • the first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines second indication information.
  • the second terminal determines second indication information, where the second indication information is used to indicate the second power configuration parameter.
  • the second power configuration parameter is configured by the network device.
  • the second power configuration parameter indicated by the second indication information may be a third parameter that is configured by the network device, so that the first terminal that does not receive or detect the signal on the downlink determines the transmission power, or may be the foregoing network.
  • the first parameter P 0 of the device configuration may also be a fourth parameter configured by the network device to determine the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device. Make any restrictions.
  • the network device configures, for the same resource pool, a third parameter that is used to determine the transmission power of the first terminal that does not receive or detect the signal on the downlink, and may also be the first parameter P 0 of the network device configuration. .
  • the resource pool is used by the first terminal to send a signal by using resources in the resource pool.
  • the second terminal sends the second indication information to the first terminal.
  • the second terminal sends the second indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
  • the method for the second terminal to determine the path loss of the second terminal to the first terminal is similar to the method for the second terminal to determine the second terminal to the first terminal in the foregoing step 202, and details are not described herein again.
  • the second terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the second terminal sends the second indication information to the first terminal.
  • the second threshold is pre-configured or configured by the network device, or preset.
  • the first terminal determines, according to the second power parameter indicated by the second indication information, a transmit power of the first terminal.
  • the first terminal After the first terminal receives the second indication information sent by the second terminal, the first terminal determines the transmission power of the first terminal according to the second power parameter indicated by the second indication information.
  • the first terminal may determine, according to the second power configuration parameter indicated by the second indication information, the first terminal transmission signal according to at least one of a bandwidth and a modulation and coding scheme (MCS) of the transmission signal.
  • MCS modulation and coding scheme
  • the MCS may be an MCS parameter or a parameter reflecting the MCS (such as the ratio of the size of the code block to the number of resource elements).
  • the first terminal determines the transmission power of the first terminal according to the second power configuration parameter indicated by the second indication information, so that the transmission power of the first terminal is less than or equal to the power P 2 , where the P 2 meets:
  • the P CMAX is a maximum output power of the first terminal, and the P CMAX can also be a configured maximum output power.
  • the first terminal can determine P CMAX according to parameters configured by the network device.
  • the M is a bandwidth of a resource used by the first terminal to transmit a signal.
  • the first terminal further determines the transmission power of the first terminal according to the MCS, optionally, the first terminal determines the transmission power of the first terminal according to the second power configuration parameter, so that the transmission power of the first terminal is less than or equal to the power.
  • P 2 wherein the P 2 satisfies the following formula
  • ⁇ TF is a parameter determined according to MCS.
  • the second terminal when the second terminal determines that the path loss difference is less than the second threshold, the second terminal sends the second indication information to the first terminal, where the first terminal indicates according to the second indication information.
  • the second power configuration parameter determines a transmission power of the first terminal.
  • the first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines second indication information.
  • the second indication information is used to indicate a second power configuration parameter, where the second indication information is used to indicate the second power configuration parameter.
  • the second power configuration parameter is configured by the network device.
  • the second power configuration parameter indicated by the second indication information may be a third parameter that is configured by the network device, so that the first terminal that does not receive or detect the signal on the downlink determines the transmission power, or may be the foregoing network.
  • the first parameter P 0 of the device configuration may also be a fourth parameter configured by the network device to determine the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device. Make any restrictions.
  • the second terminal sends the second indication information to the first terminal.
  • the second terminal After the second terminal determines the second indication information, the second terminal sends the second indication information to the first terminal.
  • the first terminal determines, according to the second power configuration parameter indicated by the second indication information, a transmit power of the first terminal.
  • the first terminal After the first terminal receives the second indication information sent by the second terminal, the first terminal determines the transmission power of the first terminal according to the second power configuration parameter indicated by the second indication information.
  • the method for determining, by the first terminal, the transmission power of the first terminal according to the second power configuration parameter is similar to the determining the transmission power of the first terminal according to the second power configuration parameter in step 403, and details are not described herein again.
  • the first terminal determines the transmission power of the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
  • the first terminal may receive the indication information that is sent by the second terminal to indicate the path loss of the second terminal to the network device, and determine the path loss of the second terminal to the network device.
  • the method for the first terminal to determine the path loss of the second terminal to the first terminal is similar to the method for the second terminal to determine the second terminal to the first terminal in the foregoing step 202, and details are not described herein again.
  • the first terminal compares the path loss difference with the second threshold.
  • the first terminal determines, according to the second power configuration parameter indicated by the second indication information, the first terminal. Transmission power
  • the second terminal sends the second indication information to the first terminal, where the first terminal determines that the path loss difference is less than the second threshold, the first terminal indicates according to the second indication information.
  • the second power configuration parameter determines a transmission power of the first terminal.
  • the first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines third indication information.
  • the second terminal determines third indication information, where the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the third power configuration parameter.
  • the third power configuration parameter is configured by the network device.
  • the third power configuration parameter may be a third parameter configured by the network device to enable the first terminal that does not receive or detect the signal on the downlink to determine the transmission power, or may be the first parameter of the network device configuration.
  • P 0 may also be a fourth parameter configured by the network device for determining the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device, and the application does not impose any limitation.
  • the second terminal sends the third indication information to the first terminal.
  • the second terminal sends the third indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
  • the method for the second terminal to determine the path loss of the second terminal to the network device is similar to the method for the second terminal to determine the second terminal to the network device in the foregoing step 201, and details are not described herein again.
  • the method for the second terminal to determine the path loss of the second terminal to the first terminal is similar to the method for the second terminal to determine the second terminal to the first terminal in the foregoing step 202, and details are not described herein again.
  • the second terminal compares the path loss difference with the second threshold, when the path loss difference is less than the second threshold, The second terminal sends the third indication information to the first terminal.
  • the second threshold is pre-configured or configured by the network device, or preset.
  • the network device sends sixth indication information to the first terminal.
  • the network device sends the sixth indication information to the first terminal, where the sixth indication information is used to indicate the third power configuration parameter.
  • the first terminal determines a third power configuration parameter.
  • the first terminal device After the first terminal device receives the third indication information sent by the second terminal, the first terminal determines the third power configuration parameter.
  • the first terminal determines the third power configuration parameter according to the sixth indication information sent by the network device.
  • the third power configuration parameter may be a third parameter configured by the network device to enable the first terminal that does not receive or detect the signal on the downlink to determine the transmission power, or may be the first parameter P of the network device configuration.
  • the third power configuration parameter may also be a fourth parameter configured by the network device for determining the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device, and the application does not impose any limitation.
  • the first terminal determines, according to the third power parameter, a transmission power of the first terminal.
  • the first terminal determines the transmission power of the first terminal according to the third power configuration parameter.
  • the first terminal may determine, according to the third power configuration parameter indicated by the second indication information, the first terminal transmission signal according to at least one of a bandwidth and a modulation and coding scheme (MCS) of the transmission signal. Transmission power.
  • the MCS may be an MCS parameter or a parameter reflecting the MCS (such as the ratio of the size of the code block to the number of resource elements).
  • the first terminal determines, according to the third power configuration parameter, the transmission power of the first terminal, so that the transmission power of the first terminal is less than or equal to the power P 3 , where the P 3 satisfies:
  • the P CMAX is a maximum output power of the first terminal, and the P CMAX can also be a configured maximum output power.
  • the first terminal can determine P CMAX according to parameters configured by the network device.
  • the M is a bandwidth of a resource used by the first terminal to transmit a signal.
  • the first terminal further determines the transmission power of the first terminal according to the MCS, optionally, the first terminal determines the transmission power of the first terminal according to the third power configuration parameter, so that the transmission power of the first terminal is less than or equal to the power.
  • P 3 wherein the P 3 satisfies the following formula
  • ⁇ TF is a parameter determined according to MCS.
  • the second terminal when the second terminal determines that the path loss difference is less than the second threshold, the second terminal sends the third indication information to the first terminal, where the first terminal determines the third indication information according to the third indication information.
  • the transmission power of a terminal The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines third indication information.
  • the third indication information is used to indicate that the first terminal determines the first end according to the third power configuration parameter.
  • the transmission power of the terminal is used to indicate that the first terminal determines the first end according to the third power configuration parameter.
  • the third power configuration parameter is configured by the network device.
  • the third power configuration parameter may be a third parameter configured by the network device to enable the first terminal that does not receive or detect the signal on the downlink to determine the transmission power, or may be the first parameter of the network device configuration.
  • P 0 may also be a fourth parameter configured by the network device for determining the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device, and the application does not impose any limitation.
  • the second terminal sends third indication information to the first terminal.
  • the second terminal After the second terminal determines the third indication information, the second terminal sends the third indication information to the first terminal.
  • the network device sends sixth indication information to the first terminal.
  • Step 703 is similar to step 603 above, and details are not described herein again.
  • the first terminal determines a third power configuration parameter.
  • the first terminal determines the third power configuration parameter according to the sixth indication information sent by the network device.
  • the third power configuration parameter may be a third parameter configured by the network device to enable the first terminal that does not receive or detect the signal on the downlink to determine the transmission power, or may be the first parameter P of the network device configuration.
  • the third power configuration parameter may also be a fourth parameter configured by the network device for determining the transmission power of the first terminal outside the coverage of the network device, or may be other parameters configured by the network device, and the application does not impose any limitation.
  • the first terminal determines, according to the third power configuration parameter, a transmit power of the first terminal.
  • step 705 is similar to step 605, and details are not described herein again.
  • the first terminal determines the transmission power of the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
  • the first terminal may receive the indication information that is sent by the second terminal to indicate the path loss of the second terminal to the network device, and determine the path loss of the second terminal to the network device.
  • the method for the first terminal to determine the path loss of the second terminal to the first terminal is similar to the method for the second terminal to determine the second terminal to the first terminal in the foregoing step 202, and details are not described herein again.
  • the first terminal compares the path loss difference with the second threshold.
  • the first terminal determines the transmission power of the first terminal according to the third power configuration parameter.
  • the second threshold is pre-configured or configured by the network device, or preset.
  • the second terminal sends the third indication information to the first terminal, where the first terminal determines that the path loss difference is less than the second threshold, the first terminal determines the first indication according to the third indication information.
  • the transmission power of a terminal The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines fourth indication information.
  • the second terminal determines the fourth indication information, where the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to cause the first terminal to determine the path loss of the first terminal to the network device.
  • the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information.
  • the cell identifier is a serving cell identifier of the second terminal.
  • the measurement gap is used to cause the first terminal to determine the measured time domain resources.
  • the reference signal power is used to indicate the transmit power of the reference signal, so that The first terminal determines the path loss of the first terminal to the network device.
  • the second terminal may send the fourth indication information by one or more messages.
  • the second terminal sends fourth indication information to the first terminal.
  • the second terminal sends the fourth indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
  • the method for the second terminal to determine the path loss of the second terminal to the network device is similar to the method for the second terminal to determine the second terminal to the network device in the foregoing step 201, and details are not described herein again.
  • the method for the second terminal to determine the path loss of the second terminal to the first terminal is similar to the method for the second terminal to determine the second terminal to the first terminal in the foregoing step 202, and details are not described herein again.
  • the second terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the second terminal sends the fourth indication information to the first terminal.
  • the second threshold is pre-configured or configured by the network device, or preset.
  • the first terminal determines, according to the first measurement configuration information, a path loss of the first terminal to the network device.
  • the first terminal device After the first terminal device receives the fourth indication information, the first terminal determines the path loss of the first terminal to the network device according to the first measurement configuration information indicated by the fourth indication information.
  • the first terminal may receive or detect the reference signal sent by the network setting according to the first measurement configuration information.
  • the first terminal measures the received power of the reference signal.
  • the first terminal determines a path loss of the first terminal to the network device according to the received power of the reference signal.
  • the first terminal determines that the path loss of the first terminal to the network device is the difference between the transmit power of the reference signal and the received power of the reference signal.
  • the first terminal may receive the reference signal sent by the network device multiple times, filter the received power of the multiple reference signals, and determine the path loss of the first terminal to the network device according to the received power of the filtered reference signal.
  • the reference signal may be a cell-specific reference signal (CRS).
  • the first terminal may receive indication information sent by the network device or the second terminal to indicate the transmission power of the reference signal, thereby determining the transmission power of the reference signal.
  • the network device sends indication information for indicating a measurement gap to the second terminal, where the second terminal receives the indication information, and the second terminal according to the indicated measurement gap, A measurement gap in the first measurement configuration information is determined.
  • the second terminal sends the measurement indication information to the first terminal, and after receiving the measurement indication information, the first terminal determines, according to the first measurement configuration information, a path loss of the first terminal to the network device.
  • the first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal.
  • the first terminal determines the transmission power of the first terminal according to the path loss of the first terminal to the network device.
  • the first terminal may determine, according to the path loss of the first terminal to the network device, according to at least one of a bandwidth and a modulation and coding scheme (MCS) of the transmission signal, Transmission power.
  • MCS modulation and coding scheme
  • the MCS may be an MCS parameter or a parameter reflecting the MCS (such as the ratio of the size of the code block to the number of resource elements).
  • the first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal, so that the transmission power of the first terminal is less than or equal to the power P 4 , where the P 4 meets any of the following formulas. :
  • the P CMAX is the maximum output power of the first terminal.
  • P CMAX can also be a configured maximum output power, and the first terminal can determine P CMAX according to parameters configured by the network device.
  • M is the bandwidth of the transmission signal using a first terminal of the first parameter P 0 of the configuration of a network device, a second parameter ⁇ is configured the network device, a first parameter P 0 It can be a power value or other parameters, and there is no restriction on this application.
  • the second parameter ⁇ may be a path loss compensation coefficient or other parameters, and the present application also does not impose any restrictions.
  • ⁇ TF is a parameter determined according to MCS.
  • the second terminal when the second terminal determines that the path loss difference is less than the second threshold, the second terminal sends the fourth indication information to the first terminal, where the first terminal indicates according to the fourth indication information.
  • the first measurement configuration information determines a transmission power of the first terminal.
  • the first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines fourth indication information.
  • the second terminal determines the fourth indication information, where the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to cause the first terminal to determine the path loss of the first terminal to the network device.
  • the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information.
  • the cell identifier is a serving cell identifier of the second terminal.
  • the measurement gap is used to cause the first terminal to determine the measured time domain resources.
  • the reference signal power is used to indicate the transmit power of the reference signal, such that the first terminal determines the path loss of the first terminal to the network device.
  • the second terminal may send the fourth indication information by one or more messages.
  • the second terminal sends fourth indication information to the first terminal.
  • the second terminal After the second terminal determines the fourth indication information, the second terminal sends the fourth indication information to the first terminal.
  • the first terminal determines, according to the first measurement configuration information, a path loss of the first terminal to the network device.
  • the first terminal further determines, according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal, the path loss of the first terminal to the network device.
  • the first terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the first terminal determines the path of the first terminal to the network device according to the first measurement configuration information indicated by the fourth indication information. damage.
  • the first terminal may receive or detect the reference signal sent by the network setting according to the first measurement configuration information.
  • the first terminal measures the received power of the reference signal.
  • the first terminal determines a path loss of the first terminal to the network device according to the received power of the reference signal.
  • the first terminal determines that the path loss of the first terminal to the network device is the difference between the transmit power of the reference signal and the received power of the reference signal.
  • the first terminal may receive the reference signal sent by the network device multiple times, filter the received power of the multiple reference signals, and determine the first terminal to the network device according to the received power of the filtered reference signal. Road damage.
  • the reference signal may be a cell-specific reference signal (CRS).
  • the first terminal may receive indication information sent by the network device or the second terminal to indicate the transmission power of the reference signal, thereby determining the transmission power of the reference signal.
  • the first terminal sends the measurement indication information to the second terminal or the network device, and after the first terminal sends the measurement indication information, the first terminal determines the path loss of the first terminal to the network device according to the first measurement configuration information.
  • the first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal.
  • This step 904 is similar to the above step 804, and details are not described herein again.
  • the second terminal sends the fourth indication information to the first terminal, where the first terminal determines that the path loss difference is less than the second threshold, the first terminal indicates according to the fourth indication information.
  • the first measurement configuration information determines the transmission power of the first terminal.
  • the first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines fifth indication information.
  • the first terminal determines the fifth indication information, where the fifth indication information is used to instruct the first terminal to determine the path loss of the first terminal to the network device according to the second measurement configuration information.
  • the network device sends seventh indication information to the first terminal device.
  • the network device sends the seventh indication information to the first terminal device, where the seventh indication information is used to indicate the second measurement configuration information, and the second measurement configuration information is used to enable the first terminal to determine the path loss of the first terminal to the network device.
  • the second measurement configuration information includes at least one of the following information: measurement gap, cell identity, reference signal power, and cyclic prefix configuration information.
  • the cell identifier is a serving cell identifier of the second terminal.
  • the measurement gap is used to cause the first terminal to determine the measured time domain resources.
  • the reference signal power is used to indicate the transmit power of the reference signal, such that the first terminal determines the path loss of the first terminal to the network device.
  • the second terminal may send the fourth indication information by one or more messages.
  • the network device sends third measurement configuration information to the second terminal.
  • the network device sends third measurement configuration information to the second terminal, where the third measurement configuration information is part or all of the second measurement configuration information.
  • the third measurement configuration information is: at least one of a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information.
  • the third measurement configuration information is a measurement gap
  • the measurement gap is a time resource that is measured by the first terminal by using the third measurement configuration information.
  • the second terminal sends the fifth indication information to the first terminal.
  • the method for the second terminal to determine the path loss of the second terminal to the network device is similar to the method for the second terminal to determine the second terminal to the network device in the foregoing step 201, and details are not described herein again.
  • the method for the second terminal to determine the path loss of the second terminal to the first terminal is similar to the method for the second terminal to determine the second terminal to the first terminal in the foregoing step 202, and details are not described herein again.
  • the second terminal determines the path loss of the second terminal to the network device, and the path loss of the second terminal to the first terminal
  • the second terminal according to the path loss of the second terminal to the network device and the second terminal to The road loss of the first terminal is toward the first end
  • the terminal sends the fifth indication information, where the fifth indication information is used to instruct the first terminal to determine the path loss of the first terminal to the network device according to the second measurement configuration information.
  • the second terminal compares the path loss difference with the second threshold. When the path loss difference is less than the second threshold, the second terminal sends the fifth indication information to the first terminal.
  • the first terminal determines second measurement configuration information.
  • the second terminal determines the second measurement configuration information.
  • the first terminal determines the second measurement configuration information according to the seventh indication information sent by the network device.
  • the first terminal determines, according to the second measurement configuration information, a path loss of the first terminal to the network device.
  • the first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal.
  • Steps 1006 and 1007 are similar to the above steps 803 and 804, and are not described herein again.
  • the second terminal when the second terminal determines that the path loss difference is smaller than the second threshold, the second terminal sends the fifth indication information to the first terminal, where the first terminal determines the first indication according to the fifth indication information.
  • the transmission power of a terminal The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • another embodiment of the power control method in this application includes:
  • the second terminal determines fifth indication information.
  • the second terminal determines the fifth indication information, where the fifth indication information is used to instruct the first terminal to determine the path loss of the first terminal to the network device according to the second measurement configuration information.
  • the network device sends the seventh indication information to the first terminal device.
  • the network device sends third measurement configuration information to the second terminal.
  • Steps 1102 and 1103 are similar to steps 1002 and 1003, respectively, and are not described herein again.
  • the second terminal sends the fifth indication information to the first terminal.
  • the second terminal determines the fifth indication information
  • the second terminal sends the fifth indication information to the first terminal, where the fifth indication information is used to indicate that the first terminal determines the first terminal to the network device according to the second measurement configuration information. Road damage.
  • the first terminal determines second measurement configuration information.
  • the first terminal After the first terminal receives the fifth indication information sent by the second terminal, the first terminal compares the path loss difference with the second threshold, and when the path loss difference is less than the second threshold, the first terminal determines the second measurement. Configuration information.
  • the first terminal determines the second measurement configuration information according to the seventh indication information sent by the network device.
  • the first terminal determines, according to the second measurement configuration information, a path loss of the first terminal to the network device.
  • the first terminal determines, according to the path loss of the first terminal to the network device, the transmission power of the first terminal.
  • Steps 1106 and 1107 are similar to steps 804 and 805, respectively, and are not described herein again.
  • the second terminal sends the fourth indication information to the first terminal, where the first terminal determines that the path loss difference is less than the second threshold, the first terminal determines the first indication according to the fifth indication information.
  • the transmission power of a terminal The first terminal is caused to determine the transmission power of the first terminal without receiving or detecting a signal on the downlink.
  • an embodiment of the first terminal of the present application includes:
  • the receiving unit 1201 is configured to receive the first target indication information that is sent by the second terminal, where the first target indication information is used to enable the first terminal to determine the transmission power of the first terminal.
  • the first determining unit 1202 is configured to determine the transmission power according to the first target indication information.
  • the foregoing first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication information;
  • the first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to the path loss of the second terminal to the network device, and the second indication information is used to indicate a second power configuration parameter, where the foregoing The second power configuration parameter is configured by the foregoing network device, and the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the third power configuration parameter, where the third power configuration parameter is configured by the network device.
  • the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device, and the fifth indication information is used to indicate the foregoing
  • the first terminal determines, according to the second measurement configuration information, a path loss of the first terminal to the network device.
  • the foregoing first terminal further includes:
  • a second determining unit 1303, configured to determine a path loss of the foregoing second terminal to the first terminal
  • the first determining unit 1302 includes:
  • the determining module 13021 is configured to determine the transmission power according to the first target indication information and the path loss of the second terminal to the first terminal.
  • the determining module 13021 is specifically configured to:
  • the path loss difference is greater than or equal to the first threshold, determining the transmission power according to the first indication information, where the path loss difference is the path loss of the second terminal to the network device and the second terminal to the first The difference between the path loss of the terminal, where the first threshold is configured in advance or configured by the network device; or
  • the second threshold is a pre-configured or the network device configuration.
  • the first determining unit 1302 is specifically configured to:
  • the first power information indicating a configuration parameter based on the first indication, determining said transmission power is less than or equal to the transmission power P 1, the above P 1 satisfies:
  • the P CMAX is a maximum output power of the first terminal
  • the M is a bandwidth of a resource used by the first terminal to transmit a signal
  • the P 0 is a first parameter configured by the network device, where the ⁇ is the network device.
  • the second parameter of the configuration is a maximum output power of the first terminal, the M is a bandwidth of a resource used by the first terminal to transmit a signal, and the P 0 is a first parameter configured by the network device, where the ⁇ is the network device.
  • the first determining unit 1302 is specifically configured to:
  • the P CMAX is a maximum output power of the first terminal, and the M is a bandwidth of a resource used by the first terminal to transmit a signal.
  • the above terminal also includes:
  • the first determining unit 1302 is specifically configured to:
  • the P CMAX is a maximum output power of the first terminal, and the M is a bandwidth of a resource used by the first terminal to transmit a signal.
  • the first determining unit 1302 is specifically configured to:
  • the first measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and a cyclic prefix configuration information. ;
  • the transmission power is determined according to the path loss of the first terminal to the network device.
  • the terminal further includes:
  • the fourth determining unit 1305 is configured to determine the foregoing second measurement configuration information, where the second measurement configuration information includes at least one of the following information: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information;
  • the first determining unit 1302 is specifically configured to:
  • the transmission power is determined according to the path loss of the first terminal to the network device.
  • the first power configuration parameter is a path loss of the second terminal to the network device
  • the determining module 13021 is specifically configured to:
  • an embodiment of the second terminal in this application includes:
  • the first determining unit 1401 is configured to determine first target indication information, where the first target indication information is used to cause the first terminal to determine a transmission power of the first terminal.
  • the sending unit 1402 is configured to send the first target indication information to the first terminal.
  • the foregoing first target indication information includes at least one of the following indication information: first indication information, second indication information, third indication information, fourth indication information, and fifth indication. information;
  • the first indication information is used to indicate a first power configuration parameter, where the first power configuration parameter is determined according to the path loss of the second terminal to the network device, and the second indication information is used to indicate a second power configuration parameter, where the foregoing
  • the second power configuration parameter is configured by the network device
  • the third indication information is used to indicate that the first terminal determines the transmission power of the first terminal according to the second power configuration parameter, where the third power configuration parameter is the network device configuration.
  • the fourth indication information is used to indicate the first measurement configuration information, where the first measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device
  • the fifth indication information is used to indicate On The first terminal determines, according to the second measurement configuration information, a path loss of the first terminal to the network device.
  • the second terminal further includes:
  • a second determining unit 1503 configured to determine a path loss of the second terminal to the first terminal, and a path loss of the second terminal to the network device;
  • the sending unit 1502 includes:
  • the sending module 15021 is configured to send the first target indication information to the first terminal according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal.
  • the sending module 15021 is specifically configured to:
  • the foregoing terminal further includes:
  • the third determining unit 1504 is configured to determine the first power configuration parameter according to the path loss of the second terminal to the network device and the path loss of the second terminal to the first terminal, or
  • the third determining unit 1504 is further configured to determine the first power configuration parameter according to the path loss of the second terminal to the network device, the path loss of the second terminal to the first terminal, and an antenna gain of the network device.
  • the first measurement configuration information includes at least one of the following: a measurement gap, a cell identifier, a reference signal power, and cyclic prefix configuration information; and the second measurement configuration information includes at least one of the following information: Measurement gap, cell identification, reference signal power, and cyclic prefix configuration information.
  • the network device in this application includes:
  • the determining unit 1601 is configured to determine second target indication information, where the second target indication information includes at least one of the following indication information: sixth indication information and seventh indication information;
  • the sixth indication information is used to indicate the third measurement configuration parameter, where the third power configuration parameter is used to enable the first terminal to determine the transmission power of the first terminal, and the seventh indication information is used to indicate the second measurement configuration information.
  • the second measurement configuration information is used to enable the first terminal to determine a path loss of the first terminal to the network device.
  • the first sending unit 1602 is configured to send the second target indication information to the first terminal.
  • the second measurement configuration information includes at least one of the following: a measurement gap, a cell identity, a reference signal power, and cyclic prefix configuration information.
  • the foregoing network device further includes:
  • the second sending unit 1703 is configured to send third measurement configuration information to the second terminal, where the third measurement configuration information includes partial information or all information in the second measurement configuration information, where the second terminal is the first Terminal for terminal communication.
  • the third power configuration parameter is configured to enable the first terminal to be received on a downlink
  • the transmission power of the first terminal is determined in the case of detecting a signal.
  • the communication device may be any one of the network device, the first terminal, and the second terminal.
  • a hardware structure diagram of a communication device 18 includes at least one processor 1801, a communication bus 1802, a memory 1803, and at least one communication interface 1804.
  • the processor 1801 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of the present application. integrated circuit.
  • Communication bus 1802 can include a path for communicating information between the components described above.
  • Communication interface 1804 using any type of transceiver, for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), etc. .
  • RAN Radio Access Network
  • WLAN Wireless Local Area Networks
  • the memory 1803 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions.
  • the dynamic storage device can also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, and a disc storage device. (including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be Any other media accessed, but not limited to this.
  • the memory can exist independently and be connected to the processor via a bus.
  • the memory can also be integrated with the processor.
  • the memory 1803 is configured to store application code for executing the solution of the present application, and is controlled by the processor 1801 for execution.
  • the processor 1801 is configured to execute the application code stored in the memory 1803 to implement the method of implementing data conversion in the cloud data center as described in the above embodiments.
  • the processor 1801 may include one or more CPUs, such as CPU0 and CPU1 in FIG.
  • communication device 18 may include multiple processors, such as processor 1801 and processor 1808 in FIG. Each of these processors can be a single-CPU processor or a multi-core processor.
  • a processor herein may refer to one or more devices, circuits, and/or processing cores for processing data, such as computer program instructions.
  • communication device 18 may also include an output device 1805 and an input device 1806.
  • Output device 1805 is in communication with processor 1801 and can display information in a variety of ways.
  • the output device 1805 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector. Wait.
  • Input device 1806 is in communication with processor 1801 and can accept user input in a variety of ways.
  • input device 1806 can be a mouse, keyboard, touch screen device, or sensing device, and the like.
  • the communication device 18 described above can be a general purpose communication device or a dedicated communication device.
  • the communication device 18 can be a desktop, a portable computer, a web server, a personal digital assistant (PDA), a mobile handset, a tablet, a wireless terminal device, an embedded device, or a device having a similar structure as in FIG.
  • PDA personal digital assistant
  • the embodiment of the present application does not limit the type of communication device 18.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.).
  • wire eg, coaxial cable, fiber optic, Digital Subscriber Line (DSL)
  • wireless eg, infrared, wireless, microwave, etc.
  • the computer readable storage medium can be any available media that can be stored by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • 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 application 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 a software functional unit.
  • the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
  • a computer readable storage medium A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like.
  • the medium of the program code includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de commande de puissance et un dispositif associé, qui sont utilisés pour commander la puissance d'un dispositif terminal et pour réduire la consommation de puissance du dispositif terminal. Le procédé mis en œuvre par la présente invention comprend les étapes suivantes : un premier terminal reçoit des premières informations d'indication cible qui sont envoyées par un second terminal, les premières informations d'indication cible étant utilisées pour amener le premier terminal à déterminer sa puissance de transmission ; et le premier terminal détermine la puissance de transmission selon les premières informations d'indication cible.
PCT/CN2017/097281 2017-08-11 2017-08-11 Procédé de commande de puissance et dispositif associé WO2019028923A1 (fr)

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PCT/CN2017/097281 WO2019028923A1 (fr) 2017-08-11 2017-08-11 Procédé de commande de puissance et dispositif associé
CN202110679723.9A CN113490260B (zh) 2017-08-11 2017-08-11 一种功率控制方法及相关设备
CN201780079330.6A CN110089161B (zh) 2017-08-11 2017-08-11 一种功率控制方法及相关设备

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CN113490260A (zh) 2021-10-08

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