WO2020087977A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2020087977A1
WO2020087977A1 PCT/CN2019/095253 CN2019095253W WO2020087977A1 WO 2020087977 A1 WO2020087977 A1 WO 2020087977A1 CN 2019095253 W CN2019095253 W CN 2019095253W WO 2020087977 A1 WO2020087977 A1 WO 2020087977A1
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WIPO (PCT)
Prior art keywords
power
transmission
side link
devices
path loss
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PCT/CN2019/095253
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English (en)
Chinese (zh)
Inventor
黎超
刘哲
张兴炜
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华为技术有限公司
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Publication of WO2020087977A1 publication Critical patent/WO2020087977A1/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
    • H04W52/04—TPC
    • H04W52/06—TPC algorithms
    • H04W52/10—Open loop power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences
    • H04W52/244—Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/383—TPC being performed in particular situations power control in peer-to-peer links

Definitions

  • This application relates to the field of communications, and in particular to a data transmission method and device.
  • a communication system in addition to communication between a network device (such as a base station) and a terminal device, it also includes communication between the terminal device and the terminal device, which is called sidelink communication.
  • the data transmission in the side link communication is not forwarded by the network equipment, which not only saves wireless spectrum resources, but also reduces the data transmission pressure of the core network, can reduce the resource occupation of the communication system, and improve the spectrum efficiency of the cellular communication system.
  • the present application provides a data transmission method and device, which solves the problem that the existing power control method is only directed to the broadcast transmission on the side link.
  • a first aspect of this application provides a data transmission method, including:
  • the first device determines the transmit power of the first device on the side link according to the side link power parameter;
  • the side link power parameter includes at least one of the following: a first power parameter between the first device and the network device, The second power parameter between the M second devices and the network device, and the configured transmit power value between the first device and the M second devices, where M is a positive integer not less than 1; the first device uses the first device ’s The transmit power sends data to M second devices.
  • the first device determines the transmission power of the first device on the side link according to the power parameter of the side link, and uses the transmission power of the first device on the side link to send the data, which avoids excessive transmission power when the first device sends data Interference with upstream data reception of network equipment.
  • the first power parameter is the first path loss between the first device and the network device, or, the first power obtained according to the first path loss; one of the M second devices
  • the second power parameter of the two devices is the second path loss between the second device and the network device, or the second power obtained according to the second path loss.
  • the side link power parameter includes a first power parameter, the first power parameter is the first power, and the transmit power of the first device is not greater than the first power.
  • the transmission power of the first device By controlling the transmission power of the first device not to be greater than the first power, the interference of the data transmission on the side link to the uplink reception of the network device on the cellular link is alleviated.
  • the side link power parameter further includes M second power parameters, the second power parameter is the second power, and the transmit power of the first device is not greater than the first power parameter and the M second powers At least one of them.
  • the transmission power of the first device By controlling the transmission power of the first device not to be greater than the first power and the M second transmission powers, the interference of data transmission on the side link to the uplink reception of the network device on the cellular link is further alleviated.
  • the transmission power of the first device is the minimum value of the first power and the M second powers.
  • the side link power parameter includes a first power parameter
  • the first power parameter is a first path loss between the first device and the network device, and the transmit power of the first device is not greater than according to the first The first power obtained by road loss.
  • the side link power parameter further includes M second power parameters, and the second power parameter of one of the M second devices is the second power parameter between the second device and the network device.
  • the transmit power of the first device is not greater than the first power acquired according to the first path loss, and the M second power acquired based on M second path losses.
  • the first device and the M second devices have the same open-loop power parameter
  • the first device and the M second devices have the same path loss compensation factor as the network device
  • the first device The transmission power of is the transmission power obtained according to the minimum path loss among the first path loss and the M second path losses.
  • the first power is determined according to the open-loop power parameter, the first path loss, the path loss compensation factor of the first device and the network device, and the transmission bandwidth of the first device.
  • the side link power parameter includes the configured transmit power value between the first device and the M second devices, and the first device determines the first device on the side link according to the side link power parameter Transmit power, including:
  • the first device determines that the configured transmission power value is the transmission power of the first device.
  • the configured transmit power value on the side link between the first device and the M second devices is the same; the configured transmit power value is received through signaling or pre-configured or pre-defined.
  • the side link power parameter includes the configured transmit power value between the first device and the M second devices, and the first device determines the first device on the side link according to the side link power parameter Transmit power, including:
  • the first device uses the maximum value of the third power and the configured transmission power as the transmission power of the first device, and the third power is determined by the first device according to the path loss of the side link between the first device and the M second devices The power.
  • the side link power parameter further includes the configured transmit power value between the first device and the M second devices.
  • the first device determines the first on the side link according to the side link power parameter
  • the transmit power of the equipment including:
  • the first device determines that the configuration transmission power value is the transmission power of the first device.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the configured transmit power value is not greater than the first power ,
  • the first device determines that the configured transmission power value is the transmission power of the first device, including:
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the first device determines that the configured transmission power value is the transmission power of the first device;
  • the power control parameters include open-loop power parameters and path loss compensation factors.
  • the side link power parameter further includes the configured transmit power value between the first device and the M second devices.
  • the first device determines the first on the side link according to the side link power parameter
  • the transmit power of the equipment including:
  • the configuration transmission power value is not greater than the first power and M second powers, and the first device determines that the configuration transmission power value is the transmission power of the first device.
  • the power control parameters of the side link of the first device and the power control parameters of the communication link between the first device and the network device, and one of the M second devices and the network device are the same.
  • the configured transmit power value is not greater than the first power and M second powers.
  • the first device determines that the configured transmit power value is the transmit power of the first device, including:
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the second path loss between the M second devices and the network device, the first device determines to configure the transmission
  • the power value is the transmit power of the first device
  • the power control parameters include open-loop power parameters and path loss compensation factors.
  • the side link power parameter further includes the configured transmit power value between the first device and the M second devices.
  • the first device determines the first on the side link according to the side link power parameter
  • the transmit power of the equipment including:
  • the first device uses the fourth power not greater than the first power as the transmission power of the first device; or,
  • the first device uses the fifth power not greater than the first power and not less than the third power as the transmit power of the first device;
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the path loss of the side link between the first device and the M second devices, and The open loop power parameter is determined.
  • the side link power parameter further includes the configured transmit power value between the first device and the M second devices.
  • the first device determines the first on the side link according to the side link power parameter
  • the transmit power of the equipment including:
  • the first device uses the minimum of the first power and the M second powers, or the third power, as the transmission of the first device on the side link Power; or,
  • the first device uses the sixth power not greater than the first power and M second powers as the transmission power of the first device; or,
  • the first device uses the seventh power that is not less than the third power and that is not greater than the first power and M second powers as the transmission power of the first device;
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the path loss of the side link between the first device and the M second devices, and The open loop power parameter is determined.
  • the transmission power of the first device is not less than the third power
  • the third power is based on the path loss compensation factor of the side link of the first device and the M second devices, the transmission bandwidth of the first device, the path loss of the side link of the first device and the M second devices, and the open loop
  • the power parameter is determined.
  • the data transmission method before the first device determines the transmit power of the first device on the side link according to the side link power parameter, the data transmission method further includes:
  • the first device determines that at least one of the first rules is satisfied; the first rule includes:
  • the third power is not greater than the first power; or,
  • the third power is not greater than the second power
  • the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the power control parameter of the side link of the first device is the same as the power control parameter of the communication link between the first device and the network device, and the first device uses the power parameter of the side link Before determining the transmit power of the first device on the side link, the data transmission method further includes:
  • the first device determines that at least one of the second rules is satisfied; the second rule includes:
  • the path loss of the side link between the first device and the M second devices is not greater than the first path loss between the first device and the network device; or,
  • the path loss of the side link between the first device and the M second devices is not greater than the second path loss between the M second devices and the network device.
  • the data transmission method before the first device determines the transmit power of the first device on the side link according to the side link power parameter, the data transmission method further includes:
  • the first device receives indication information of second power parameters of each second device sent by M second devices; or,
  • the first device receives the indication information of the second power parameters of the M second devices sent by the network device.
  • the data transmission method further includes:
  • the first device sends indication information of the first power parameter to the M second devices and / or network devices.
  • the data transmission method further includes:
  • the first device sends third power indication information to M second devices and / or network devices.
  • the data transmission method further includes:
  • the first device sends indication information of the path loss of the side link between the first device and the M second devices to the M second devices and / or network devices.
  • the data transmission method further includes:
  • the first device sends a first power headroom report to M second devices and / or network devices;
  • the first power headroom report carries the indication information of the first power parameter.
  • the first power headroom report is generated by using the first power of the first device as the transmission power of the first device.
  • the data transmission method before the first device determines the transmit power of the first device on the side link according to the side link power parameter, the data transmission method further includes:
  • the first device receives M second power headroom reports sent by each of the M second devices, or the first device receives the second power headroom reports of M second devices sent by the network device;
  • the second power headroom report of any second device carries indication information of the second power parameter of the second device, and the second power headroom report is generated by using the second power of the second device as the transmission power of the second device .
  • the data transmission method further includes:
  • the first device sends a third power headroom report to the network device
  • the third power headroom report carries the indication information of the third power.
  • the third power headroom report is generated by using the third power of the first device on the side link as the transmission power of the first device.
  • the transmission power of the first device is not greater than the preset maximum transmission power of the first device.
  • the preset maximum transmit power includes at least one of the following:
  • the maximum available transmit power of the first device or,
  • the maximum transmit power allowed by the first device or,
  • the maximum transmission power or maximum available transmission power of the first device on all carriers in the current subframe or,
  • the maximum transmission power or maximum available transmission power of the first device on the current carrier in the current subframe or,
  • the network device is the maximum transmit power configured on the current control / data channel of the first device.
  • the maximum transmission power configured by the network device for the first device is configured by the network device for the first device.
  • the first device uses the transmit power of the first device to send data to M second devices, including:
  • M is 1, the first device sends data to M second devices using the transmission power of the first device in the form of unicast; or,
  • the first device sends data to M second devices using the transmit power of the first device in the form of multicast or broadcast.
  • the transmission methods of the side link include at least two of the following: unicast , Multicast and broadcast, at least two transmissions have the same or different transmission methods.
  • the data transmission method before the first device uses the transmit power of the first device to send data to the M second devices, the data transmission method further includes:
  • the first device determines that the sum of the transmitted power in each transmission is not greater than the eighth power of the first device, and the eighth power is any one of the following:
  • the sum of the transmission power of the first device under each transmission is greater than the eighth power of the first device, and before the first device uses the transmission power of the first device to send data to M second devices,
  • the data transmission method also includes:
  • the first device adjusts the transmission power of the first device under each transmission according to the priority of each transmission and the power parameter of the side link; or,
  • the first device determines the transmission power with a transmission power of 0 and the transmission power corresponding to the transmission with a transmission power other than 0 according to the priority of each transmission from low to high.
  • the first device allocates the second power to various transmissions according to a preset ratio, and determines the transmission power of the first device under each transmission; or,
  • the first device determines the transmission power of the first device under each transmission according to the congestion level of the channel corresponding to each transmission and the power parameter of the side link; or,
  • the first device determines the power configuration / discard order of each transmission according to a predefined rule, and the first device determines the transmit power of the discarded transmission and the undiscarded transmission according to the power configuration / discard order of each transmission; or,
  • the first device determines the transmission order of each transmission according to a predefined rule, and the first device determines the transmission power of the first device under each transmission according to the transmission order of each transmission.
  • the first device uses the transmit power of the first device to send data to M second devices on the carrier where the cellular link is located, and the cellular link is a link through which the terminal device communicates with the network device .
  • the number of terminals is the first device or M second devices.
  • a second aspect of the present application provides a data transmission device for performing the data transmission method of the first aspect described above, which has the same technical effect.
  • the data transmission device provided in the second aspect of the present application, as the first device, includes:
  • the obtaining module is used to determine the transmit power of the first device on the side link according to the side link power parameter;
  • the side link power parameter includes at least one of the following: the first power between the first device and the network device Parameters, the second power parameter between the M second devices and the network device, and the configured transmit power value between the first device and the M second devices, where M is a positive integer not less than 1;
  • the sending module is configured to send data to M second devices using the transmit power of the first device.
  • the first power parameter is the first path loss between the first device and the network device, or, the first power obtained according to the first path loss; one of the M second devices
  • the second power parameter of the two devices is the second path loss between the second device and the network device, or the second power obtained according to the second path loss.
  • the side link power parameter includes a first power parameter, the first power parameter is the first power, and the transmit power of the first device is not greater than the first power.
  • the side link power parameter further includes M second power parameters, the second power parameter is the second power, and the transmit power of the first device is not greater than the first power parameter and the M second powers At least one of them.
  • the transmission power of the first device is the minimum value of the first power and the M second powers.
  • the side link power parameter includes a first power parameter
  • the first power parameter is a first path loss between the first device and the network device, and the transmit power of the first device is not greater than according to the first The first power obtained by road loss.
  • the side link power parameter further includes M second power parameters, and the second power parameter of one of the M second devices is the second power parameter between the second device and the network device.
  • the transmit power of the first device is not greater than the first power acquired according to the first path loss, and the M second power acquired based on M second path losses.
  • the first device and the M second devices have the same open-loop power parameter
  • the first device and the M second devices have the same path loss compensation factor as the network device
  • the first device The transmission power of is the transmission power obtained according to the minimum path loss among the first path loss and the M second path losses.
  • the first power is determined according to the open-loop power parameter, the first path loss, the path loss compensation factor of the first device and the network device, and the transmission bandwidth of the first device.
  • the side link power parameter includes a configured transmission power value between the first device and the M second devices, and the acquisition module is specifically configured to determine the configured transmission power value as the transmission power of the first device.
  • the configured transmit power value on the side link between the first device and the M second devices is the same; the configured transmit power value is received through signaling or pre-configured or pre-defined.
  • the side link power parameter includes the configured transmit power value between the first device and the M second devices
  • the acquisition module is specifically configured to use the maximum value of the third power and the configured transmit power as The transmit power of the first device
  • the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the side link power parameter further includes the configured transmit power value between the first device and the M second devices, and the acquisition module is specifically configured to determine the configured transmit power value as the transmit power of the first device ;
  • the configured transmission power value is not greater than the first power.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the configured transmit power value is not greater than the first power ,
  • the acquisition module is specifically used to determine that the configured transmission power value is the transmission power of the first device;
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device
  • the power control parameters include an open-loop power parameter and a path loss compensation factor
  • the side link power parameter further includes the configured transmit power value between the first device and the M second devices, and the acquisition module is specifically configured to determine the configured transmit power value as the transmit power of the first device , Where the configured transmit power value is not greater than the first power and M second powers.
  • the power control parameters of the side link of the first device and the power control parameters of the communication link between the first device and the network device, and one of the M second devices and the network device are the same, and the configured transmit power value is not greater than the first power and M second powers.
  • the acquisition module is specifically used to determine the configured transmit power value as the transmit power of the first device;
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the second path loss between the M second devices and the network device, and the power control parameters include Open loop power parameters and path loss compensation factors.
  • the side link power parameter further includes the configured transmit power value between the first device and the M second devices, and the acquisition module is specifically used to:
  • the configured transmission power value is greater than the first power
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the first device and the M second devices
  • the path loss of the side link and the open loop power parameters are determined.
  • the side link power parameter further includes the configured transmit power value between the first device and the M second devices, and the acquisition module is specifically used to:
  • the configured transmission power value is greater than the first power or M second powers
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the first device
  • the path loss of the side link with the M second devices and the open loop power parameters are determined.
  • the transmission power of the first device is not less than the third power
  • the third power is based on the path loss compensation factor of the side link of the first device and the M second devices, the transmission bandwidth of the first device, the path loss of the side link of the first device and the M second devices, and the open loop
  • the power parameter is determined.
  • the data transmission device further includes:
  • the detection module is used to determine that at least one of the first rules is satisfied; the first rules include:
  • the third power is not greater than the first power; or,
  • the third power is not greater than the second power
  • the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the detection module is also used to:
  • the second rules include:
  • the path loss of the side link between the first device and the M second devices is not greater than the first path loss between the first device and the network device; or,
  • the path loss of the side link between the first device and the M second devices is not greater than the second path loss between the M second devices and the network device.
  • the data transmission device further includes:
  • a receiving module configured to receive indication information of second power parameters of each second device sent by M second devices; or,
  • the sending module is further configured to send the indication information of the first power parameter to the M second devices and / or network devices.
  • the sending module is further configured to send the third power indication information to the M second devices and / or network devices.
  • the sending module is further configured to send the indication information of the path loss of the side link between the first device and the M second devices to the M second devices and / or network devices.
  • the sending module is further configured to send the first power headroom report to the M second devices and / or network devices;
  • the first power headroom report carries the indication information of the first power parameter.
  • the first power headroom report is generated by using the first power of the first device as the transmission power of the first device.
  • the receiving module is further configured to receive M second power headroom reports sent by each of the M second devices, or the first device receives the M second device reports sent by the network device. Second power headroom report;
  • the second power headroom report of any second device carries indication information of the second power parameter of the second device, and the second power headroom report is generated by using the second power of the second device as the transmission power of the second device .
  • the sending module is further used to send a third power headroom report to the network device;
  • the third power headroom report carries the indication information of the third power.
  • the third power headroom report is generated by using the third power of the first device on the side link as the transmission power of the first device.
  • the transmission power of the first device is not greater than the preset maximum transmission power of the first device.
  • the preset maximum transmit power includes at least one of the following:
  • the maximum available transmit power of the first device or,
  • the maximum transmit power allowed by the first device or,
  • the maximum transmission power or maximum available transmission power of the first device on all carriers in the current subframe or,
  • the maximum transmission power or maximum available transmission power of the first device on the current carrier in the current subframe or,
  • the network device is the maximum transmit power configured on the current control / data channel of the first device.
  • the maximum transmission power configured by the network device for the first device is configured by the network device for the first device.
  • the sending module is specifically configured to send data to M second devices using the transmit power of the first device in the form of unicast, where M is 1; or,
  • M is greater than 1.
  • the transmission methods of the side link include at least two of the following: unicast , Multicast and broadcast, at least two transmissions have the same or different transmission methods.
  • the detection module is further used to determine that the sum of the transmission powers of the transmissions is not greater than the eighth power of the first device, and the eighth power is any one of the following:
  • the sum of the transmission power of the first device under each transmission is greater than the eighth power of the first device, and the data transmission device further includes an adjustment module for
  • the power configuration / discard order of each transmission is determined according to a predefined rule, and the first device determines the transmission power of the discarded transmission and the non-discarded transmission according to the power configuration / discard order of each transmission; or,
  • the transmission order of each transmission is determined according to a predefined rule, and the first device determines the transmission power of the first device under each transmission according to the transmission order of each transmission.
  • the sending module is specifically configured to use the transmit power of the first device to send data to M second devices on the carrier where the cellular link is located. Link.
  • a third aspect of the present application provides an output transmission device for performing the data transmission method of the first aspect described above, which has the same technical effect.
  • the data transmission device provided in the third aspect of the present application includes:
  • the processor is configured to determine the transmit power of the first device on the side link according to the side link power parameter;
  • the side link power parameter includes at least one of the following: the first power between the first device and the network device Parameters, the second power parameter between the M second devices and the network device, and the configured transmit power value between the first device and the M second devices, where M is a positive integer not less than 1;
  • the transmitter is configured to use the transmit power of the first device to send data to M second devices.
  • the first power parameter is the first path loss between the first device and the network device, or, the first power obtained according to the first path loss; one of the M second devices
  • the second power parameter of the two devices is the second path loss between the second device and the network device, or the second power obtained according to the second path loss.
  • the side link power parameter includes a first power parameter, the first power parameter is the first power, and the transmit power of the first device is not greater than the first power.
  • the side link power parameter further includes M second power parameters, the second power parameter is the second power, and the transmit power of the first device is not greater than the first power parameter and the M second powers At least one of them.
  • the transmission power of the first device is the minimum value of the first power and the M second powers.
  • the side link power parameter includes a first power parameter
  • the first power parameter is a first path loss between the first device and the network device, and the transmit power of the first device is not greater than according to the first The first power obtained by road loss.
  • the side link power parameter further includes M second power parameters, and the second power parameter of one of the M second devices is the second power parameter between the second device and the network device.
  • the transmit power of the first device is not greater than the first power acquired according to the first path loss, and the M second power acquired based on M second path losses.
  • the first device and the M second devices have the same open-loop power parameter
  • the first device and the M second devices have the same path loss compensation factor as the network device
  • the first device The transmission power of is the transmission power obtained according to the minimum path loss among the first path loss and the M second path losses.
  • the first power is determined according to the open-loop power parameter, the first path loss, the path loss compensation factor of the first device and the network device, and the transmission bandwidth of the first device.
  • the side link power parameter includes a configured transmission power value between the first device and the M second devices.
  • the processor is specifically configured to determine the configured transmission power value as the transmission power of the first device.
  • the configured transmit power value on the side link between the first device and the M second devices is the same; the configured transmit power value is received through signaling or pre-configured or pre-defined.
  • the side link power parameter includes the configured transmit power value between the first device and the M second devices.
  • the processor is specifically configured to use the maximum value of the third power and the configured transmit power as The transmit power of the first device, and the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the side link power parameter further includes a configured transmit power value between the first device and the M second devices, and the processor is specifically configured to determine the configured transmit power value as the transmit power of the first device ;
  • the configured transmission power value is not greater than the first power.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the configured transmit power value is not greater than the first power
  • the processor is specifically configured to determine that the configured transmission power value is the transmission power of the first device
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the power control parameters include open-loop power parameters and path loss compensation factors.
  • the side link power parameter further includes a configured transmit power value between the first device and the M second devices, and the processor is specifically configured to determine the configured transmit power value as the transmit power of the first device , Where the configured transmit power value is not greater than the first power and M second powers.
  • the power control parameters of the side link of the first device and the power control parameters of the communication link between the first device and the network device, and one of the M second devices and the network device are the same, and the configured transmit power value is not greater than the first power and M second powers.
  • the processor is specifically configured to determine the configured transmit power value as the transmit power of the first device;
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the second path loss between the M second devices and the network device, and the power control parameters include Open loop power parameters and path loss compensation factors.
  • the side link power parameter further includes a configured transmission power value between the first device and the M second devices, and the processor is specifically used to:
  • the configured transmission power value is greater than the first power
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the first device and the M second devices
  • the path loss of the side link and the open loop power parameters are determined.
  • the side link power parameter further includes a configured transmission power value between the first device and the M second devices, and the processor is specifically used to:
  • the configured transmission power value is greater than the first power or M second powers
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the first device
  • the path loss of the side link with the M second devices and the open loop power parameters are determined.
  • the transmission power of the first device is not less than the third power
  • the third power is based on the path loss compensation factor of the side link of the first device and the M second devices, the transmission bandwidth of the first device, the path loss of the side link of the first device and the M second devices, and the open loop
  • the power parameter is determined.
  • the data transmission device further includes:
  • the detection module is used to determine that at least one of the first rules is satisfied; the first rules include:
  • the third power is not greater than the first power; or,
  • the third power is not greater than the second power
  • the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the detection module is also used to:
  • the second rules include:
  • the path loss of the side link between the first device and the M second devices is not greater than the first path loss between the first device and the network device; or,
  • the path loss of the side link between the first device and the M second devices is not greater than the second path loss between the M second devices and the network device.
  • the data transmission device further includes:
  • a receiver configured to receive indication information of second power parameters of each second device sent by M second devices; or,
  • the transmitter is further configured to send indication information of the first power parameter to M second devices and / or network devices.
  • the transmitter is further configured to send the third power indication information to the M second devices and / or network devices.
  • the transmitter is further configured to send indication information of the path loss of the side link between the first device and the M second devices to the M second devices and / or network devices.
  • the transmitter is further configured to send the first power headroom report to the M second devices and / or network devices;
  • the first power headroom report carries the indication information of the first power parameter.
  • the first power headroom report is generated by using the first power of the first device as the transmission power of the first device.
  • the receiver is further configured to receive M second power headroom reports sent by each of the M second devices, or the first device receives the M second device power reports sent by the network device.
  • Second power headroom report ;
  • the second power headroom report of any second device carries indication information of the second power parameter of the second device, and the second power headroom report is generated by using the second power of the second device as the transmission power of the second device .
  • the transmitter is also used to send a third power headroom report to the network device;
  • the third power headroom report carries the indication information of the third power.
  • the third power headroom report is generated by using the third power of the first device on the side link as the transmission power of the first device.
  • the transmission power of the first device is not greater than the preset maximum transmission power of the first device.
  • the preset maximum transmit power includes at least one of the following:
  • the maximum available transmit power of the first device or,
  • the maximum transmit power allowed by the first device or,
  • the maximum transmission power or maximum available transmission power of the first device on all carriers in the current subframe or,
  • the maximum transmission power or maximum available transmission power of the first device on the current carrier in the current subframe or,
  • the network device is the maximum transmit power configured on the current control / data channel of the first device.
  • the maximum transmission power configured by the network device for the first device is configured by the network device for the first device.
  • the transmitter is specifically configured to send data to M second devices using the transmission power of the first device in the form of unicast, where M is 1; or,
  • M is greater than 1.
  • the transmission methods of the side link include at least two of the following: unicast , Multicast and broadcast, at least two transmissions have the same or different transmission methods.
  • the processor is further configured to determine that the sum of the transmission powers of the transmissions is not greater than the eighth power of the first device, and the eighth power is any one of the following:
  • the processor is also used to:
  • the power configuration / discard order of each transmission is determined according to a predefined rule, and the first device determines the transmission power of the discarded transmission and the non-discarded transmission according to the power configuration / discard order of each transmission; or,
  • the transmission order of each transmission is determined according to a predefined rule, and the first device determines the transmission power of the first device under each transmission according to the transmission order of each transmission.
  • the transmitter is specifically configured to use the transmit power of the first device to send data to M second devices on the carrier where the cellular link is located, and the cellular link is for the terminal device to communicate with the network device Link.
  • a fourth aspect of the present application provides an electronic device, including: a processor, a memory, and a computer program;
  • the computer program is stored in the memory, and the processor runs the computer program to execute the data transmission method in any feasible implementation manner as described in the first aspect above.
  • a fifth aspect of the present application provides a computer storage medium.
  • the storage medium includes a computer program, and the computer program is used to implement the data transmission method in any feasible implementation manner as described in the first aspect.
  • a sixth aspect of the present application provides a computer program product.
  • the computer program product includes computer program code.
  • the computer program product is caused to perform the data transmission method in any feasible implementation manner as described in the first aspect above. .
  • a seventh aspect of the present application provides a chip, including a memory and a processor, the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the electronic device on which the chip is installed executes any one of the first aspect Data transmission method in a feasible implementation manner.
  • FIG. 1 is a first schematic diagram of the architecture of a communication system provided by an embodiment of the present application
  • FIG. 2 is a second schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • FIG. 3 is a first schematic flowchart of a data transmission method provided by an embodiment of this application.
  • 4a is a schematic diagram of a first device using a time division multiplexing mode for transmission
  • 4b is a schematic diagram of the first device using frequency division multiplexing mode for transmission
  • FIG. 5 is a schematic structural diagram of a data transmission device according to Embodiment 1 of the present application.
  • FIG. 6 is a schematic structural diagram of a data transmission device according to Embodiment 2 of the present application.
  • FIG. 7 is a schematic structural diagram of a data transmission device according to Embodiment 3 of the present application.
  • FIG. 1 is a schematic structural diagram 1 of a communication system provided by an embodiment of the present application.
  • the communication system may include: a network device and at least one terminal device.
  • the communication system provided by the embodiments of the present application includes communication between the terminal device and the terminal device in addition to the communication between the network device and the terminal device.
  • the communication link between the terminal device and the terminal device may be a device-to-device communication (device-to-device, D2D) link, or an edge link.
  • the communication link between the terminal device and the terminal device may also be a vehicle-to-vehicle (vechile-to-vechile, V2V) link, a vehicle-to-pedestrian (vechile-to-pedestrian, V2P) link, a vehicle To the infrastructure (vechile-to-infrastructure, V2I) link, the link between the vehicle and any device (vechile-to-x, V2X).
  • V2V vehicle-to-vehicle
  • V2P vehicle-to-pedestrian
  • V2I vehicle To the infrastructure
  • V2X vehicle To the infrastructure
  • the side link / first link is mainly used to describe the communication transmission between the terminal device and the terminal device
  • the cellular link / second link is used to describe the communication between the network device and the terminal device transmission.
  • the side link can communicate in at least one of unicast, multicast, and broadcast between terminal devices and terminal devices.
  • the terminal device may be a wireless terminal or a wired terminal.
  • the wireless terminal may be a device that provides voice and / or other service data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem.
  • a wireless terminal can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • the wireless terminal can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal For example, it may be a portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile device, road side unit (RSU), which exchanges language and / or data with the wireless access network.
  • RSU road side unit
  • the wireless terminal may also be called a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a mobile station (mobile), a remote station (remote), a remote terminal (remote), an access terminal Access terminal (terminal), user terminal (user terminal), user agent (user agent), on-board unit (OBU), this application is not limited here.
  • a network device is a device that connects a terminal device to a wireless network, and may be a base transceiver station (BTS) in a global system for mobile (GSM), a universal mobile communication system (universal Base station (Node B) in mobile telecommunications systems (UMTS), evolutionary base station (evolutional node B, eNB or eNodeB) in long term evolution (LTE), or relay station or access point, or future fifth generation Base stations in the 5th generation (mobile) communication (5G) network, or relay stations, access points, in-vehicle devices, wearable devices, etc. working in a high-frequency band are not limited herein.
  • FIG. 1 exemplarily shows a side link between device 1 and device 2 when device 1 and device 2 perform unicast communication.
  • the terminal device in FIG. 1 is illustrated by taking the vehicle device 1 and the vehicle device 2 as examples.
  • device 1 and device 2 may be located under the same network device or may be located under different network devices, which is not limited in this application.
  • FIG. 2 is a second schematic diagram of the architecture of a communication system provided by an embodiment of the present application.
  • the communication system includes multiple terminal devices.
  • FIG. 2 exemplarily shows a side chain between device 1 and other devices when device 1 performs multicast or broadcast to device 2, device 3, and device 4. road.
  • the device 2, the device 3, and the device 4 may also perform multicast or broadcast to other terminal devices.
  • a terminal device that has a direct connection with a network device and also has a connection with a remote UE is called a relay UE.
  • Relay UE can directly communicate with network equipment, and can also transfer data between remote UE and network equipment, or only communicate with remote UE. Among them, there is a direct connection between the Remote UE and the Relay UE, and an optional direct connection with the network device.
  • the Remote UE can communicate directly with the Relay UE or communicate with the network device through the Relay UE.
  • the communication system may further include at least one roadside unit RSU, and the RSU may communicate with various vehicle-mounted devices (terminal devices) and or network devices.
  • Each network device in the communication system can communicate with each vehicle-mounted device and or RSU.
  • the communication system may also include at least one global navigation satellite system (GNSS).
  • GNSS can provide positioning-related information for vehicle-mounted equipment, roadside units, and network equipment.
  • RSU can realize the functions of vehicle-mounted equipment and network equipment.
  • the data transmission method provided by the present application may also be applied to links between network devices, and each network device in the communication system may be a macro station or a small station. There can also be both macro stations and small stations in the communication system.
  • the network device in the communication system may be the base station where the primary carrier is located or the base station where the secondary carrier is located, which is not limited in this application.
  • the side link and the cellular link use different frequencies on the same carrier for communication, although the time-frequency resources used by the terminal device for data transmission on the side link and the time used for communication on the cellular link Frequency resources have different frequency resources, but the data transmitted by the terminal device on the side link can be transmitted on the carrier to which the cellular link belongs, so the out-of-band leakage of the terminal device transmission on the side link will interfere with the network device Upstream reception. Therefore, it is necessary to control the transmission power of the terminal device on the side link to avoid that the signal sent on the side link will interfere with the signal reception of the network device.
  • the present application provides at least one data transmission method and device in the following embodiments.
  • the following uses specific embodiments to describe in detail the data transmission method and device provided by the present application.
  • the same or similar concepts or processes may not be repeated in some embodiments.
  • FIG. 3 is a first schematic flowchart of a data transmission method according to an embodiment of the present application.
  • the first device determines the transmission power of the first device on the side link according to the power parameter of the side link, so as to prevent the transmission power of the first device from interfering with the uplink reception of the network device .
  • the data transmission method provided in this embodiment can be applied to the communication system shown in FIGS. 1 and 2.
  • the execution subject in this embodiment can be a terminal device in the communication system.
  • the first device determines the transmission power of the first device on the side link according to the side link power parameter.
  • the side link power parameter includes at least one of the following: a first power parameter between the first device and the network device, a second power parameter between the M second devices and the network device, and the first device and M
  • the configured transmission power value between two second devices where M is a positive integer not less than 1.
  • the transmission power value configured here may be configured by a network device, may also be pre-configured, or may be pre-defined by a protocol, which is not limited in this application.
  • the transmission power of the first device on the side link may be determined according to the power parameter of the side link, to avoid excessive transmission power of the first device.
  • the first device sends data to M second devices on the side link.
  • M When M is 1, it can be sent in unicast mode; when M> 1, it can be sent in multicast mode ; M may also be an indefinite number of second devices, which can be sent in a broadcast manner at this time. As long as the data is sent out to the first device, under the broadcast mechanism, it is not mandatory for certain M second devices to receive the data sent by the first device.
  • the side link power parameter may be: a first power parameter between the first device and the network device, a second power parameter between the M second devices and the network device, the first device and the M second Any one or a combination of any number of configuration transmit power values between devices.
  • M is greater than 1
  • each second device corresponds to a second power parameter
  • the network device configures a configured transmit power value for the first device and each second device.
  • the first device may determine the transmission power of the first device according to the first power parameter, may also control the transmission power of the first device according to the first power parameter and p second power parameters, and may also according to the first power parameter and configuration
  • the transmission power value controls the transmission power of the first device.
  • p is an integer greater than 0 and not greater than M.
  • the first power parameter is the first path loss between the first device and the network device, or the first power obtained according to the first path loss.
  • the first power may be the maximum transmit power of the first device on the side link allowed by the network device.
  • the transmission power of the first device on the side link is greater than the first power, the interference of the transmission power of the first device on the uplink data reception of the network device will exceed the acceptance range of the network device. That is to say, the first power can be regarded as an upper limit value of the transmission power of the first device, that is, the value of the transmission power on the side link determined by the first device cannot exceed this value.
  • the first path loss may be a path loss measured by the first device within a preset time range.
  • the first device updates the first path loss according to a preset period, or when it detects that the displacement is greater than the preset or configured displacement.
  • the second power parameter of one of the M second devices is the second path loss between the second device and the network device, or the second power obtained according to the second path loss.
  • the second power may be the maximum transmit power of the second device on the side link allowed by the network device.
  • the transmission power of the second device on the side link is greater than the second power, the interference of the transmission power of the second device on the uplink data reception of the network device will exceed the acceptance range of the network device. That is to say, the second power can be regarded as an upper limit value of the transmission power of the second device, that is, the value of the transmission power on the side link determined by the second device cannot exceed this value.
  • the second path loss may be a path loss measured by the second device within a preset time range.
  • the second device updates the second path loss according to a preset period, or when it detects that the displacement is greater than the preset or configured displacement.
  • the second power parameter when the first power parameter is the first power, the second power parameter may be the second power or the second path loss between the second device and the network device. Similarly, when the first power parameter is the first path loss between the first device and the network device, the second power parameter may be the second power or the second path loss between the second device and the network device .
  • the data transmission method before determining the transmission power of the first device in S101, the data transmission method further includes:
  • the first device receives indication information of the second power parameters of the M second devices.
  • the manner in which the first device receives the indication information of the second power parameters of the M second devices may be that the first device receives the indication information of the second power parameters of the second devices sent by the M second devices Or, the first device receives the indication information of the second power parameters of the M second devices sent by the network device.
  • the indication information of the second power parameter needs to be carried in the power headroom report and sent.
  • the first device receives M second power headroom reports sent by each of the M second devices, or the first device receives the M second devices sent by the network device
  • the second power headroom report of any of the second devices; the second power headroom report of any of the second devices carries indication information of the second power parameter of the second device.
  • the power headroom report is the difference obtained by subtracting the transmission power from the preset maximum transmission power.
  • the second power headroom report is generated by using the second power of the second device as the transmission power of the second device.
  • the second power headroom report PHR2 Pmax-P2, where Pmax is the maximum transmit power or the maximum allowable transmit power, and P2 is the second power.
  • the first device uses the transmit power of the first device to send data to M second devices.
  • the first device when M is greater than 1, referring to FIG. 2, the first device sends data to a plurality of second devices. At this time, the first device uses the transmission power of the first device in the form of multicast or broadcast Two devices send data.
  • the data transmission method provided in this embodiment includes: the first device determines the transmission power of the first device on the side link according to the power parameter of the side link, and the first device uses the transmission power of the first device to send to the M second devices data.
  • the first device determines the transmission power of the first device on the side link according to the power parameter of the side link, and uses the transmission power of the first device on the side link to send data, which avoids the first device from sending data When the transmission power is too large, it will interfere with the uplink data reception of the network equipment.
  • the determination of the transmission power of the first device will be described in detail below in conjunction with the specific content included in the side link power parameter.
  • determining the transmission power of the first device may specifically include the following situations:
  • the side link power parameter includes a first power parameter, and the first power parameter is the first power. At this time, the transmit power of the first device is not greater than the first power.
  • the transmission power of the first device By controlling the transmission power of the first device not to be greater than the first power, the interference of the data transmission on the side link to the uplink reception of the network device on the cellular link is alleviated.
  • the side link power parameter also includes M second power parameters, and the second power parameter of one of the M second devices is the second power. At this time, the transmit power of the first device is not greater than the first power parameter And M second transmission powers.
  • the transmission power of the first device By controlling the transmission power of the first device not to be greater than the first power and the M second transmission powers, the interference of data transmission on the side link to the uplink reception of the network device on the cellular link is further alleviated.
  • the transmit power of the first device may use the minimum value of the first power and the M second powers.
  • the transmission power of the first device selects the smaller of the first power and the second power.
  • the transmit power of the first device may also be a power value less than the first power and M second powers.
  • determining that the transmit power of the first device may specifically include the following situations:
  • the side link power parameter includes a first power parameter, and the first power parameter is a first path loss between the first device and the network device. At this time, the transmit power of the first device is not greater than the first path loss obtained according to the first path loss power.
  • the first power acquisition method may specifically be:
  • the first power is determined according to the open-loop power parameter, the first path loss, the path loss compensation factor of the first device and the network device, and the transmission bandwidth of the first device.
  • the transmission bandwidth may be the actual transmission bandwidth or an intermediate value used for determining the transmission power.
  • this bandwidth is the bandwidth when transmitting on the side link.
  • the first path loss is a loss caused by a transmission medium during data transmission between the first device and the network device, and the first path loss is affected by the distance between the first device and the network device.
  • the path loss compensation factor is used to compensate for the path loss during transmission.
  • the open-loop power parameter P0 is just a substitute for the name. It is actually an initial value of a power used to determine the uplink transmission power in the cellular link, and is a terminal-specific parameter.
  • P0 may be terminal device specific or terminal device group specific.
  • this parameter can also be used to determine the first power value.
  • the first power value is a value used by the network device to control the uplink interference of the transmission on the sidelink on the shared carrier.
  • the network device may control the first power by configuring the open-loop power parameter P0 and the loss compensation factor alpha.
  • the path loss compensation factor is a parameter used to compensate for the path loss during transmission.
  • the path loss compensation factor will be directly multiplied or added to the path loss to achieve compensation according to the corresponding factor Corresponding road loss value.
  • the path loss ranges from 0 to 1.
  • the first power P1 is specifically calculated according to the open loop power parameter P0_1, the first path loss L1, the path loss compensation factor alpha_1 of the first device and the network device, and the transmission bandwidth M1 of the first device, using the following formula 1:
  • the side link power parameter also includes M second power parameters.
  • the second power parameter of one of the M second devices is the second path loss between the second device and the network device.
  • the first The transmission power of the device is not greater than the first power acquired according to the first path loss, and the M second power acquired based on the M second path losses.
  • the calculation method of the second power of any second device may specifically be:
  • the second power is determined according to the open-loop power parameter, the second path loss, the path loss compensation factor of the second device and the network device, and the transmission bandwidth of the second device.
  • the second path loss is a loss caused by a transmission medium during data transmission between the second device and the network device, and the second path loss is affected by the distance between the second device and the network device.
  • the second power P2 is specifically calculated according to the following formula 2 according to the open-loop power parameter P0_2, the second path loss L2, the path loss compensation factor alpha_2 of the second device and the network device, and the transmission bandwidth M2 of the second device:
  • the transmission power of the first device is not greater than the first power obtained according to the first path loss, and the M second powers obtained according to the M second path losses, That is, the transmission power of the first device is not greater than P1 and M P2.
  • the first device and the M second devices have the same open-loop power parameter P0, and the first device and the M second devices have the same path loss compensation factor alpha between the network devices
  • the first The transmission power P of the device is not greater than P1 and M P2, which can be equivalent to the transmission power of the first device P ⁇ P0 + alphaxmin ⁇ L1, L2_1, L2_2, ..., L2_M ⁇ + 10log10 (M1).
  • min ⁇ L1, L2_1, L2_2, ..., L2_M ⁇ means to take the minimum value of all the path losses
  • L2_i means the second path loss of the i-th second device among the M second devices.
  • the transmission power P of the second device should also satisfy no more than P1 and M P2, and the cocoa is equivalent to the transmission power of the second device P ⁇ P0 + alphaxmin ⁇ L1, L2_1, L2_2, ..., L2_M ⁇ + 10log10 (M2).
  • the first device when the first device and the M second devices have different open-loop power parameters P0, and the path loss compensation factor alpha between the first device and the M second devices is different from the network device, the first device ’s Transmitting power P ⁇ P0_1 + alpha_1xmin ⁇ L1, L2_1, L2_2, ..., L2_M ⁇ + 10log10 (M1), transmitting power P ⁇ P0_2 + alpha_2xmin ⁇ L1, L2_1, L2_2, Hence, L2_M ⁇ + 10log10 (M2).
  • the transmission power of the first device may be the transmission power obtained according to the minimum path loss among the first path loss and the M second path losses.
  • the transmission power of the first device may also be the transmission power obtained according to the third path loss, which is one path loss value less than the first path loss and M second path losses.
  • the transmission power of the first device is obtained by selecting the smaller of the first path loss and the second path loss.
  • the determination of the transmit power of the first device may specifically be:
  • the first device determines the transmit power of the first device on the side link according to the side link power parameter, including:
  • the first device determines that the configured transmission power value is the transmission power of the first device.
  • the configured transmission power value obtained between the first device and the M second devices is the same; wherein, the configured transmission power value is configured by signaling or pre-configured or predefined.
  • the configured transmit power value is a common parameter configured for a pair of unicast first and second devices.
  • the configured transmit power value is a parameter shared by a group of first devices that perform multicast or broadcast and M second devices.
  • the first device may use the maximum value of the third power and the configured transmission power between the first device and the M second devices as the transmission power of the first device.
  • the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the power parameter of the side link includes the configuration of the transmission power value
  • the first power parameter and / or the second power parameter may also be included.
  • the first device determines the transmit power of the first device on the side link according to the side link power parameter, include:
  • the first device determines that the configuration transmission power value is the transmission power of the first device.
  • comparing the configured transmit power value and the first power configured by the network device for the first device, when the configured transmit power value is not greater than the first power, using the configured transmit power value as the transmit power of the first device can avoid the The transmission power of a device is too large.
  • the first device uses the first power or the third power as the transmission power of the first device on the side link; or,
  • the first device uses the fourth power not greater than the first power as the transmission power of the first device; or,
  • the first device will use the fifth transmit power that is not less than the third power and not greater than the first power as the transmit power of the first device.
  • the configured transmit power when the configured transmit power is greater than the first power, if the first device uses the configured transmit power as the transmit power of the first device, it may cause interference to the uplink data reception of the network device. Therefore, the first power or the third power may be used as the transmission power of the first device.
  • the third power is based on the path loss compensation factor of the side link of the first device and the M second devices, the transmission bandwidth of the first device, the first device and the M number
  • the path loss of the side link of the second device and the open loop power parameter are determined.
  • for the specific calculation method of the third power refer to Formula 1.
  • the specific calculation method for configuring the transmission power value can also refer to Formula 1. Therefore, the power control parameters on the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, the configured transmit power value is not greater than the first power, and the first device determines the configuration
  • the transmission power value is the transmission power of the first device, which can be equivalent to:
  • the first device determines that the configured transmit power value is the transmit power of the first device
  • the power control parameters include open-loop power parameters and path loss compensation factors.
  • the side link power parameter further includes a first power parameter and M second power parameters
  • the first power parameter is the first power
  • the second power parameter is the second power
  • the first device uses the side link power Parameters to determine the transmit power of the first device on the side link, including:
  • the first device determines that the configured transmission power value is the transmission power of the first device.
  • the configuration transmission is used
  • the power value is used as the transmission power of the first device, which can prevent the transmission power of the first device from being too large.
  • the first device uses the minimum value of the first power and the M second powers, or the third power as the side link Of the first device ’s transmit power; or,
  • the first device uses the sixth power not greater than the first power and M second powers as the transmission power of the first device; or,
  • the first device uses the seventh power that is not less than the third power and that is not greater than the first power and M second powers as the transmission power of the first device.
  • the side link power parameter includes the configuration transmit power parameter, the first path loss between the first device and the network device, and the second path loss between the M second devices and the network device
  • the first power of the first device and the second power of M second devices may be first obtained according to the path loss information.
  • the power control parameters of the side link of the first device, the power control parameters of the communication link between the first device and the network device, and the communication links between the M second devices and the network device When the power control parameters are the same, when the configured transmit power value is not greater than the first power, the first device determines that the configured transmit power value is the transmit power of the first device, which may be equivalent to:
  • the first device determines Set the transmission power value to the transmission power of the first device.
  • the present application also provides a data transmission method.
  • the transmit power of the first device considering that when the transmit power of the first device is too small, it may cause data transmission on the side link to fail, and the generated transmit power of the first device needs to satisfy not less than the third power.
  • the first device before determining the transmit power of the first device on the side link according to the side link power parameter, the first device should first determine that the first device determines that at least one of the first rules is met.
  • the first rule includes: the third power is not greater than the first power, or the third power is not greater than the second power.
  • the transmission power of the first device determined according to the power parameter of the side link cannot mitigate the interference requirement to the network device. Normal communication on the road.
  • the first device determines Before the transmit power of the first device on the side link, it should first be determined that the first device determines that at least one of the second rules is satisfied.
  • the second rule includes:
  • the path loss of the side link between the first device and the M second devices is not greater than the first path loss between the first device and the network device; or,
  • the path loss of the side link between the first device and the M second devices is not greater than the second path loss between the M second devices and the network device.
  • the transmission power of the first device determined according to the side link power parameter cannot relieve the network In the case of interference requirements of the equipment, normal communication on the side link.
  • the first device sends the third power indication information to the M second devices and / or network devices.
  • the first device also sends a third power headroom report to the network device; the third power headroom report carries the indication information of the first power, and the third power headroom report is determined by the first device As the transmission power of the first device on the side link is generated.
  • the first device sends the third power to the network device, so that when the network device configures the first device with the configuration transmit power value of the first device, the network device can provide a configuration transmit power value that is not less than the third power to avoid After the first device receives the configured transmission power value again, it needs to adjust the transmission power of the first device again according to the third power, thereby reducing the workload of the first device.
  • it can be used simultaneously on the carrier dedicated to the side link or the carrier common to the side link and the cellular link.
  • the first device further sends indication information of the first power parameter to the network device and / or M second devices.
  • the first device may also send a first power headroom report to M second devices and / or network devices; the first power headroom report carries indication information of the first power parameter, and the first power headroom The report is generated by using the first transmission power of the first device as the transmission power of the first device.
  • the first device also sends indication information of the path loss of the side link between the first device and the M second devices to the M second devices and / or network devices.
  • the network device may also receive the first path loss between the first device and the network device, or the first power of the first device, to further improve the rationality of configuring the first device to configure the transmission power value of the first device .
  • the network device may also receive the second path loss between each second device and the network device, or the second power of each second device.
  • the network device may also receive the path loss of the side link between the first device and each second device.
  • the network device may also configure an appropriate configuration transmit power value for the first device according to the received edge link power parameter, to avoid the first device During transmission, it interferes with the transmission on other side links.
  • the present application also provides a data transmission method.
  • the transmission power of the first device is not greater than the preset maximum transmission power of the first device.
  • the transmission power of the first device needs to satisfy both the first power P1 and the preset maximum transmission power at the same time. Less than the third power.
  • the side link power parameter further includes a second power parameter
  • the second power parameter is the second power P2
  • the transmission power of the first device needs to satisfy both the first power P1, the second power P2, and the preset
  • the maximum transmit power is not less than the third power.
  • the preset maximum transmit power includes at least one of the following:
  • the maximum transmit power allowed by the first device is the maximum transmit power allowed by the first device
  • the maximum available transmit power of the first device or,
  • the maximum transmission power or maximum available transmission power of the first device on all carriers in the current subframe or,
  • the maximum transmission power or maximum available transmission power of the first device on the current carrier in the current subframe or,
  • the network device is the maximum transmit power configured on the current control / data channel of the first device.
  • the maximum transmission power configured by the network device for the first device is configured by the network device for the first device.
  • the network device may determine the transmit power of the first device on the side link according to the second power of some of the second devices in the M second devices.
  • the first device / second device in any of the foregoing embodiments support multiple transmission modes, and the transmission modes include unicast, multicast, and broadcast.
  • the following uses the first device as an example to describe the transmission of the first device / second device exemplarily.
  • the transmission mode of the first device may adopt a time division multiplexing mode or a frequency division multiplexing mode.
  • FIG. 4a is a schematic diagram of a first device using a time division multiplexing mode for transmission.
  • 4b is a schematic diagram of the first device using the frequency division multiplexing mode for transmission.
  • the first device performs unicast, multicast and broadcast on different time domain resources.
  • the first device may determine the transmit power used by the first device under different transmissions according to the power determination step in the data transmission method in any of the foregoing embodiments.
  • the first device may transmit on different frequency domain resources on the same time domain resources.
  • Different frequency domain resources on the same time domain resource can simultaneously perform three transmissions of unicast, multicast, and broadcast, or at least two transmissions, or multiple transmissions in the same transmission mode.
  • the first device performs unicast to two second devices at the same time.
  • Different transmissions of the first device occupy different frequency-domain resources in the same time-domain resource.
  • each transmission can occupy a different physical resource block (PRB) on the aggregate carrier (CC), each The transmission occupies different sub-channels, each transmission occupies a different bandwidth part ((bandwidth) part (BWP), each transmission occupies a different resource pool, or each transmission occupies a different CC on the same frequency band.
  • PRB physical resource block
  • BWP bandwidth part
  • each transmission occupies a different resource pool
  • each transmission occupies a different CC on the same frequency band.
  • the first device when the first device has at least two data transmissions to the M second devices through the side link at the same time, and at least two transmissions have the same or different transmission methods, The manner in which a device determines the transmission power of the first device on the side link is described in detail.
  • any one of the foregoing embodiments may be used to determine the transmission power corresponding to each transmission of the first device. Before the first device uses the transmission power corresponding to each transmission to send data to the M second devices, it should also be considered whether the sum of the transmission power of the first device in each transmission is too large.
  • each transmission of the first device uses the transmission power corresponding to each transmission to send data to M second devices.
  • the eighth power is any one of the following: the configured transmission power value between the first device and the M second devices, the first power, the second power, or the preset maximum transmission power.
  • the data transmission when the sum of the transmission power of the first device under each transmission is greater than the eighth power of the first device, before the first device uses the transmission power of the first device to send data to the M second devices, the data transmission
  • the method also includes:
  • Adjust the transmission power of the first device corresponding to each transmission to obtain the adjusted transmission power of the first device corresponding to each transmission, and use the adjusted transmission power of the first device corresponding to each transmission when sending data.
  • adjusting the transmission power of the first device corresponding to each transmission may specifically be the following several possible implementation manners.
  • the first possible adjustment method is a first possible adjustment method
  • the first device determines the transmission power of the first device under each transmission according to the priority of each transmission.
  • the first device may determine the transmission power for each transmission of the first device according to the priority of each transmission from high to low or from low to high. For example, power with higher priority may be allocated from the eighth power of the first device in a manner from high to low priority.
  • a corresponding weighting coefficient may also be determined for each priority level, and the weighting coefficient is used to lower the transmission power corresponding to each transmission, for example, according to the way of priority from high to low, to determine different for each transmission of the first device
  • the weight coefficient of makes the transmission power corresponding to the transmission with higher priority decrease less.
  • different weight coefficients correspond to different priority parameter values.
  • the first device determines a transmission with a transmission power of 0 and a transmission power corresponding to a transmission with a transmission power other than 0 according to the priority of each transmission from low to high.
  • the first device discards the transmission with a transmission power of 0.
  • the transmission power corresponding to the transmission may be adjusted to 0, that is, the first device discards the transmission.
  • the transmission to be discarded may be determined in all transmissions according to the sum of the transmission power of the first device under each transmission and the eighth power of the first device.
  • the third possible adjustment method is the third possible adjustment method.
  • the first device allocates the eighth power to various transmissions according to a preset ratio, and determines the transmission power of the first device under each transmission.
  • the first device allocates the eighth power to various transmissions according to a preset ratio.
  • the preset ratio may be equal division, or the ratio corresponding to each transmission may be determined according to the priority.
  • the first device determines the transmission power of the first device under each transmission according to the congestion level of the channel corresponding to each transmission.
  • the transmission power corresponding to a transmission with a higher congestion level decreases more, and the transmission becomes more congested with a higher congestion level.
  • the fifth possible adjustment method is the fifth possible adjustment method.
  • the first device determines the power configuration / discard order of each transmission according to a predefined rule, and the first device determines the transmit power of the discarded transmission and the undiscarded transmission according to the power configuration / discard order of each transmission.
  • the predefined rules may be the number size of each second device, the priority of each second device, the number size of the CC where each transmission is located, the size of the subcarrier spacing SCS used by each transmission, each The number or size of the number of the HARQ process, the size of the data transmitted by each transmission, the priority of the service corresponding to each transmission, etc. are determined.
  • the first device determines the transmission order of each transmission according to a predefined rule, and the first device determines the transmission power of the first device under each transmission according to the transmission order of each transmission.
  • the first device also adjusts the sending order / time of each transmission, determines the transmission that can be performed in this transmission among all transmissions according to the eighth power of the first device, and sends the remaining transmission at the next moment.
  • an embodiment of the present application further provides a data transmission method.
  • the first device determines the transmit power of the first device on the side link according to the side link power parameter, including:
  • the first device determines the transmission power of the transmission of the first device on each side link according to the power parameter of the side link and the transmission of the first device on each side link.
  • the transmission of the first device on each side link includes the transmission mode of each transmission, and may also include transmission parameters of each transmission.
  • the transmission parameters include the number size of each second device, the priority of each second device, the number size of the CC where each transmission is located, the size of the subcarrier interval SCS used by each transmission, the number or HARQ of each transmission Any one or more of the number of processes, the size of data transmitted by each transmission, the priority of the service corresponding to each transmission, etc. are determined.
  • the transmission mode and / or transmission of the transmission may be referred to while referring to the power parameter of the side link to determine the transmission power corresponding to each transmission of the first device, thereby The first device uses the transmission power corresponding to each transmission to send data to M second devices.
  • the first device determines the transmission power of the transmission of the first device on each side link according to the power parameter of the side link and the transmission of the first device on each side link, which may specifically include the following possible Method to realize:
  • the first device determines the transmission power of the first device under each transmission according to the priority of each transmission and the power parameter of the side link; or,
  • the first device determines the transmission power of the first device under each transmission according to the congestion level of the channel corresponding to each transmission and the power parameter of the side link; or,
  • the first device determines the transmission power of the first device under each transmission according to a predefined rule and side link power parameters.
  • the first device may use the transmit power of the first device to send data to M second devices on the carrier where the cellular link is located.
  • the cellular link is performed by the terminal device and the base station device. Communication link.
  • the present application also provides a data transmission device for performing the data transmission method on the first device side in any of the foregoing embodiments, which has the same or similar technical features and technical effects.
  • the data transmission equipment includes:
  • the obtaining module 501 is configured to determine the transmit power of the first device on the side link according to the side link power parameter;
  • the side link power parameter includes at least one of the following: the first between the first device and the network device The power parameter, the second power parameter between the M second devices and the network device, and the configured transmission power value between the first device and the M second devices, where M is a positive integer not less than 1;
  • the sending module 502 is configured to send data to M second devices using the transmit power of the first device.
  • the first power parameter is the first path loss between the first device and the network device, or the first power obtained according to the first path loss; the second of one second device of the M second devices The power parameter is the second path loss between the second device and the network device, or the second power obtained according to the second path loss.
  • the side link power parameter includes a first power parameter, the first power parameter is the first power, and the transmit power of the first device is not greater than the first power.
  • the side link power parameter further includes M second power parameters, the second power parameter is the second power, and the transmit power of the first device is not greater than at least one of the first power parameter and the M second powers.
  • the transmission power of the first device is the minimum value among the first power and the M second powers.
  • the side link power parameter includes a first power parameter, and the first power parameter is a first path loss between the first device and the network device, and the transmit power of the first device is not greater than the first path loss obtained according to the first path loss One power.
  • the side link power parameter further includes M second power parameters.
  • the second power parameter of one of the M second devices is the second path loss between the second device and the network device.
  • the transmission power of a device is not greater than the first power obtained according to the first path loss and the M second powers obtained according to the M second path losses.
  • the first device and the M second devices have the same open-loop power parameters
  • the first device and the M second devices have the same path loss compensation factor as the network device
  • the transmit power of the first device is based on The transmission power obtained by the minimum path loss among the first path loss and the M second path losses.
  • the first power is determined according to the open-loop power parameter, the first path loss, the path loss compensation factor of the first device and the network device, and the transmission bandwidth of the first device.
  • the side link power parameter includes a configured transmission power value between the first device and the M second devices, and the obtaining module 501 is specifically configured to determine the configured transmission power value as the transmission power of the first device.
  • the configured transmit power value on the side link between the first device and the M second devices is the same; the configured transmit power value is received through signaling or pre-configured or predefined.
  • the side link power parameter includes the configured transmit power value between the first device and the M second devices
  • the acquisition module 501 is specifically configured to use the maximum value of the third power and the configured transmit power as the first device's The transmit power
  • the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the side link power parameter further includes a configured transmission power value between the first device and the M second devices, and the obtaining module 501 is specifically configured to determine the configured transmission power value as the transmission power of the first device;
  • the configured transmission power value is not greater than the first power.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the configured transmit power value is not greater than the first power, and the obtaining module 501 is specific It is used to determine that the configured transmission power value is the transmission power of the first device;
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the power control parameters include open-loop power parameters and path loss compensation factors.
  • the side link power parameter further includes the configured transmission power value between the first device and the M second devices, and the obtaining module 501 is specifically configured to determine the configured transmission power value as the transmission power of the first device, where the configuration The transmit power value is not greater than the first power and M second powers.
  • the power control parameters of the side link of the first device, the power control parameters of the communication link between the first device and the network device, and the communication links between the M second devices and the network device are the same, the configured transmit power value is not greater than the first power and the M second powers, and the obtaining module 501 is specifically used to determine the configured transmit power value as the transmit power of the first device;
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the second path loss between the M second devices and the network device, and the power control parameters include Open loop power parameters and path loss compensation factors.
  • the side link power parameter also includes the configured transmission power value between the first device and the M second devices, and the acquisition module 501 is specifically used to:
  • the configured transmission power value is greater than the first power
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the first device and the M second devices
  • the path loss of the side link and the open loop power parameters are determined.
  • the side link power parameter also includes the configured transmission power value between the first device and the M second devices, and the acquisition module 501 is specifically used to:
  • the configured transmission power value is greater than the first power or M second powers
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the first device
  • the path loss of the side link with the M second devices and the open loop power parameters are determined.
  • the transmit power of the first device is not less than the third power
  • the third power is based on the path loss compensation factor of the side link of the first device and the M second devices, the transmission bandwidth of the first device, the path loss of the side link of the first device and the M second devices, and the open loop
  • the power parameter is determined.
  • the data transmission device further includes:
  • the detection module 503 is configured to determine that at least one of the first rules is satisfied; the first rules include:
  • the third power is not greater than the first power; or,
  • the third power is not greater than the second power
  • the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the detection module 503 is also used to:
  • the second rules include:
  • the path loss of the side link between the first device and the M second devices is not greater than the first path loss between the first device and the network device; or,
  • the path loss of the side link between the first device and the M second devices is not greater than the second path loss between the M second devices and the network device.
  • the data transmission device shown in FIG. 5 further includes:
  • the receiving module 504 is configured to receive indication information of second power parameters of each second device sent by M second devices; or,
  • the sending module 502 is further configured to send indication information of the first power parameter to M second devices and / or network devices.
  • the sending module 502 is further configured to send the third power indication information to the M second devices and / or network devices.
  • the sending module 502 is further configured to send the indication information of the path loss of the side link between the first device and the M second devices to the M second devices and / or network devices.
  • the sending module 502 is further configured to send the first power headroom report to the M second devices and / or network devices;
  • the first power headroom report carries the indication information of the first power parameter.
  • the first power headroom report is generated by using the first power of the first device as the transmission power of the first device.
  • the receiving module 504 is further configured to receive M second power headroom reports sent by each of the M second devices, or the first device receives second power headrooms of the M second devices sent by the network device report;
  • the second power headroom report of any second device carries indication information of the second power parameter of the second device, and the second power headroom report is generated by using the second power of the second device as the transmission power of the second device .
  • the sending module 502 is further configured to send a third power headroom report to the network device;
  • the third power headroom report carries the indication information of the third power.
  • the third power headroom report is generated by using the third power of the first device on the side link as the transmission power of the first device.
  • the transmission power of the first device is not greater than the preset maximum transmission power of the first device.
  • the preset maximum transmit power includes at least one of the following:
  • the maximum available transmit power of the first device or,
  • the maximum transmit power allowed by the first device or,
  • the maximum transmission power or maximum available transmission power of the first device on all carriers in the current subframe or,
  • the maximum transmission power or maximum available transmission power of the first device on the current carrier in the current subframe or,
  • the network device is the maximum transmit power configured on the current control / data channel of the first device.
  • the maximum transmission power configured by the network device for the first device is configured by the network device for the first device.
  • the sending module 502 is specifically configured to send data to M second devices using the transmission power of the first device in the form of unicast, where M is 1; or,
  • M is greater than 1.
  • the transmission methods of the side link include at least two of the following: unicast, multicast, and broadcast At least two transmissions are the same or different.
  • the detection module 503 is further configured to determine that the sum of the transmission powers of the transmissions is not greater than the eighth power of the first device, and the eighth power is any one of the following:
  • the sum of the transmission power of the first device under each transmission is greater than the eighth power of the first device, and the data transmission device further includes an adjustment module 505 for
  • the power configuration / discard order of each transmission is determined according to a predefined rule, and the first device determines the transmission power of the discarded transmission and the non-discarded transmission according to the power configuration / discard order of each transmission; or,
  • the transmission order of each transmission is determined according to a predefined rule, and the first device determines the transmission power of the first device under each transmission according to the transmission order of each transmission.
  • the sending module 502 is specifically configured to use the transmit power of the first device to send data to M second devices on the carrier where the cellular link is located, and the cellular link is a link through which the terminal device communicates with the network device.
  • the present application also provides a data transmission device for performing the data transmission method on the first device side in any of the foregoing embodiments, which has the same or similar technical features and technical effects.
  • FIG. 6 is a schematic structural diagram of a data transmission device according to Embodiment 2 of the present application. As shown in Figure 6, the data transmission equipment includes:
  • the processor 601 is configured to determine the transmit power of the first device on the side link according to the side link power parameter;
  • the side link power parameter includes at least one of the following: the first between the first device and the network device The power parameter, the second power parameter between the M second devices and the network device, and the configured transmission power value between the first device and the M second devices, where M is a positive integer not less than 1;
  • the transmitter 602 is configured to use the transmit power of the first device to send data to M second devices.
  • the first power parameter is the first path loss between the first device and the network device, or the first power obtained according to the first path loss; the second of one second device of the M second devices The power parameter is the second path loss between the second device and the network device, or the second power obtained according to the second path loss.
  • the side link power parameter includes a first power parameter, the first power parameter is the first power, and the transmit power of the first device is not greater than the first power.
  • the side link power parameter further includes M second power parameters, the second power parameter is the second power, and the transmit power of the first device is not greater than at least one of the first power parameter and the M second powers.
  • the transmission power of the first device is the minimum value among the first power and the M second powers.
  • the side link power parameter includes a first power parameter, and the first power parameter is a first path loss between the first device and the network device, and the transmit power of the first device is not greater than the first path loss obtained according to the first path loss One power.
  • the side link power parameter further includes M second power parameters.
  • the second power parameter of one of the M second devices is the second path loss between the second device and the network device.
  • the transmission power of a device is not greater than the first power obtained according to the first path loss and the M second powers obtained according to the M second path losses.
  • the first device and the M second devices have the same open-loop power parameters
  • the first device and the M second devices have the same path loss compensation factor as the network device
  • the transmit power of the first device is based on The transmission power obtained by the minimum path loss among the first path loss and the M second path losses.
  • the first power is determined according to the open-loop power parameter, the first path loss, the path loss compensation factor of the first device and the network device, and the transmission bandwidth of the first device.
  • the side link power parameter includes a configured transmission power value between the first device and the M second devices.
  • the processor 601 is specifically configured to determine the configured transmission power value as the transmission power of the first device.
  • the configured transmit power value on the side link between the first device and the M second devices is the same; the configured transmit power value is received through signaling or pre-configured or predefined.
  • the side link power parameter includes the configured transmit power value between the first device and the M second devices.
  • the processor 601 is specifically configured to use the maximum value of the third power and the configured transmit power as the first device's The transmit power, and the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the side link power parameter further includes a configured transmission power value between the first device and the M second devices.
  • the processor 601 is specifically configured to determine the configured transmission power value as the transmission power of the first device;
  • the configured transmission power value is not greater than the first power.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the configured transmit power value is not greater than the first power, and the processor 601 is specific It is used to determine that the configured transmission power value is the transmission power of the first device;
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the power control parameters include open-loop power parameters and path loss compensation factors.
  • the side link power parameter further includes a configured transmission power value between the first device and the M second devices.
  • the processor 601 is specifically configured to determine the configured transmission power value as the transmission power of the first device, where the configuration The transmit power value is not greater than the first power and M second powers.
  • the power control parameters of the side link of the first device, the power control parameters of the communication link between the first device and the network device, and the communication links between the M second devices and the network device are the same, and the configured transmit power value is not greater than the first power and M second powers.
  • the processor 601 is specifically configured to determine the configured transmit power value as the transmit power of the first device;
  • the path loss of the side link of the first device is not greater than the first path loss between the first device and the network device, and the second path loss between the M second devices and the network device, and the power control parameters include Open loop power parameters and path loss compensation factors.
  • the side link power parameter also includes the configured transmission power value between the first device and the M second devices, and the processor 601 is specifically used to:
  • the configured transmission power value is greater than the first power
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the first device and the M second devices
  • the path loss of the side link and the open loop power parameters are determined.
  • the side link power parameter also includes the configured transmission power value between the first device and the M second devices, and the processor 601 is specifically used to:
  • the configured transmission power value is greater than the first power or M second powers
  • the third power is based on the path loss compensation factor of the side link between the first device and the M second devices, the transmission bandwidth of the first device, the first device
  • the path loss of the side link with the M second devices and the open loop power parameters are determined.
  • the transmit power of the first device is not less than the third power
  • the third power is based on the path loss compensation factor of the side link of the first device and the M second devices, the transmission bandwidth of the first device, the path loss of the side link of the first device and the M second devices, and the open loop
  • the power parameter is determined.
  • the data transmission equipment also includes:
  • the detection module is used to determine that at least one of the first rules is satisfied; the first rules include:
  • the third power is not greater than the first power; or,
  • the third power is not greater than the second power
  • the third power is the power determined by the first device according to the path loss of the side link between the first device and the M second devices.
  • the power control parameters of the side link of the first device are the same as the power control parameters of the communication link between the first device and the network device, and the detection module is also used to:
  • the second rules include:
  • the path loss of the side link between the first device and the M second devices is not greater than the first path loss between the first device and the network device; or,
  • the path loss of the side link between the first device and the M second devices is not greater than the second path loss between the M second devices and the network device.
  • the data transmission equipment also includes:
  • the receiver 603 is configured to receive indication information of second power parameters of each second device sent by M second devices; or,
  • the transmitter 602 is further configured to send indication information of the first power parameter to M second devices and / or network devices.
  • the transmitter 602 is further configured to send the third power indication information to the M second devices and / or network devices.
  • the transmitter 602 is further configured to send indication information of the path loss of the side link between the first device and the M second devices to the M second devices and / or network devices.
  • the transmitter 602 is further configured to send the first power headroom report to the M second devices and / or network devices;
  • the first power headroom report carries the indication information of the first power parameter.
  • the first power headroom report is generated by using the first power of the first device as the transmission power of the first device.
  • the receiver 603 is further configured to receive M second power headroom reports sent by each of the M second devices, or the first device receives the second power headrooms of the M second devices sent by the network device report;
  • the second power headroom report of any second device carries indication information of the second power parameter of the second device, and the second power headroom report is generated by using the second power of the second device as the transmission power of the second device .
  • the transmitter 602 is further configured to send a third power headroom report to the network device;
  • the third power headroom report carries the indication information of the third power.
  • the third power headroom report is generated by using the third power of the first device on the side link as the transmission power of the first device.
  • the transmission power of the first device is not greater than the preset maximum transmission power of the first device.
  • the preset maximum transmit power includes at least one of the following:
  • the maximum available transmit power of the first device or,
  • the maximum transmit power allowed by the first device or,
  • the maximum transmission power or maximum available transmission power of the first device on all carriers in the current subframe or,
  • the maximum transmission power or maximum available transmission power of the first device on the current carrier in the current subframe or,
  • the network device is the maximum transmit power configured on the current control / data channel of the first device.
  • the maximum transmission power configured by the network device for the first device is configured by the network device for the first device.
  • the transmitter 602 is specifically configured to send data to M second devices using the transmission power of the first device in the form of unicast, where M is 1; or,
  • M is greater than 1.
  • the transmission methods of the side link include at least two of the following: unicast, multicast, and broadcast At least two transmissions are the same or different.
  • the processor 601 is further configured to determine that the sum of the transmission powers in each transmission is not greater than the eighth power of the first device, and the eighth power is any one of the following:
  • the processor 601 is also used to:
  • the power configuration / discard order of each transmission is determined according to a predefined rule, and the first device determines the transmission power of the discarded transmission and the non-discarded transmission according to the power configuration / discard order of each transmission; or,
  • the transmission order of each transmission is determined according to a predefined rule, and the first device determines the transmission power of the first device under each transmission according to the transmission order of each transmission.
  • the transmitter 602 is specifically configured to use the transmit power of the first device to send data to M second devices on the carrier where the cellular link is located.
  • the cellular link is a link through which the terminal device communicates with the network device.
  • the present application also provides a data transmission device.
  • 7 is a schematic structural diagram of a data transmission device according to Embodiment 3 of the present application. As shown in FIG. 7, the data transmission device includes a processor 701, a memory 702, a communication interface 703, and a bus 704; wherein,
  • the processor 701, the memory 702 and the communication interface 703 are connected through the bus 704 and complete mutual communication.
  • the memory 702 is used to store computer-executed instructions.
  • the processor 701 executes the computer-executed instructions in the memory 702 to use
  • the hardware resources in the device execute the steps in the data transmission method on the first device side in any of the foregoing embodiments.
  • This application also provides an electronic device, including: a processor, a memory, and a computer program;
  • the computer program is stored in the memory, and the processor runs the computer program to execute the steps in the data transmission method on the first device side in any of the foregoing embodiments.
  • the present application also provides a computer storage medium.
  • the storage medium includes a computer program, and the computer program is used to implement the steps in the first device-side data transmission method in any of the foregoing embodiments.
  • the present application also provides a computer program product, the computer program product includes computer program code, and when the computer program code runs on a computer, the computer is caused to perform data transmission on the first device side as in any of the foregoing embodiments Steps in the method.
  • the present application also provides a chip, including a memory and a processor, the memory is used to store a computer program, the processor is used to call and run the computer program from the memory, so that the electronic device installed with the chip The steps in the data transmission method on the first device side in any of the foregoing embodiments are performed.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • “And / or” describes the relationship of the related objects, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related object is a "or” relationship.
  • “At least one of the following” or a similar expression refers to any combination of these items, including any combination of a single item or a plurality of items.
  • At least one item (a) in a, b, or c can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be a single or multiple .
  • the processors involved in the embodiments of the present application may be general-purpose processors, digital signal processors, application specific integrated circuits, field programmable gate arrays or other programmable logic devices, discrete gates or transistor logic devices, and discrete hardware components, which may be implemented or Perform the disclosed methods, steps, and logical block diagrams in the embodiments of the present application.
  • the general-purpose processor may be a microprocessor or any conventional processor.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.
  • the memory involved in the embodiments of the present application may be a non-volatile memory, such as a hard disk (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), for example Random access memory (random-access memory, RAM).
  • the memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.
  • the disclosed device and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • 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, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware, or in the form of hardware plus software functional units.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may 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 may be from a website site, computer, server or data center Transmit to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, Solid State Disk (SSD)) or the like.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a DVD
  • a semiconductor medium for example, Solid State Disk (SSD)

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé et un dispositif de transmission de données. Le procédé de transmission de données comprend les étapes suivantes : un premier dispositif détermine, en fonction d'un paramètre de puissance de liaison latérale, une puissance de transmission associée sur une liaison latérale ; et le premier dispositif utilise la puissance de transmission pour envoyer des données à M seconds dispositifs. Dans le procédé et le dispositif de transmission de données décrits dans les modes de réalisation de la présente invention, un premier dispositif détermine, en fonction d'un paramètre de puissance de liaison latérale, une puissance de transmission associée sur une liaison latérale, et utilise la puissance de transmission sur la liaison latérale pour envoyer des données, empêchant ainsi une interférence à la réception de données de liaison montante par un dispositif de réseau résultant d'une puissance de transmission excessivement élevée utilisée pour envoyer des données par le premier dispositif.
PCT/CN2019/095253 2018-11-02 2019-07-09 Procédé et dispositif de transmission de données WO2020087977A1 (fr)

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