WO2015180170A1 - 一种d2d通信中发射功率的控制方法及设备 - Google Patents

一种d2d通信中发射功率的控制方法及设备 Download PDF

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Publication number
WO2015180170A1
WO2015180170A1 PCT/CN2014/078998 CN2014078998W WO2015180170A1 WO 2015180170 A1 WO2015180170 A1 WO 2015180170A1 CN 2014078998 W CN2014078998 W CN 2014078998W WO 2015180170 A1 WO2015180170 A1 WO 2015180170A1
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WO
WIPO (PCT)
Prior art keywords
subframe
information
power control
power
signal
Prior art date
Application number
PCT/CN2014/078998
Other languages
English (en)
French (fr)
Inventor
王键
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2014/078998 priority Critical patent/WO2015180170A1/zh
Priority to US14/901,845 priority patent/US10009859B2/en
Priority to KR1020167001419A priority patent/KR101828901B1/ko
Priority to JP2016558247A priority patent/JP6253071B2/ja
Priority to CN201480001678.XA priority patent/CN104488332B/zh
Priority to EP14893148.8A priority patent/EP3001736A4/en
Publication of WO2015180170A1 publication Critical patent/WO2015180170A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • H04W52/383TPC being performed in particular situations power control in peer-to-peer links
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/06TPC algorithms
    • H04W52/10Open loop power control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a method and a device for controlling transmission power in D2D communication. Background technique
  • D2D ProSe Device to Device Proximity Service
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • the communication process for realizing the D2D ProSe service can be referred to as Device to Device (D2D) communication.
  • the user equipment currently performing D2D communication uses a single maximum power transmission when transmitting D2D signals. For example, if the user equipment performing D2D communication supports a transmission power of 23 dBm, the user equipment transmits with a transmission power of 23 dBm when transmitting the D2D signal.
  • the D2D signal transmitted by the user equipment performing D2D communication and the uplink signal transmitted by the user equipment performing uplink communication are multiplexed by frequency division multiplexing, as shown in FIG. Figure 1 shows a 10 MHz bandwidth (hysical resource block pair (PRB Pair), 1 ms length of time. As shown in Figure 1, there are 50 PRBs in the 10 MHz bandwidth, among them, The first to Nth PRBs, the Mth to the 50th PRBs are used to transmit uplink signals, and the N+1th to M-1th PRBs are used to transmit D2D signals.
  • PRB Pair Physical resource block pair
  • the extended cyclic prefix Extended Cyclic Prefix, Extended CP
  • 12 orthogonal frequency division multiplexing are transmitted in lms time.
  • the normal Cyclic Prefix (Normal CP) subframe format is used, that is, 14 OFDM symbols are transmitted in the lms time.
  • the subframe format for transmitting the D2D signal is different from the subframe format for transmitting the uplink signal, so there is carrier interference between the D2D signal and the uplink signal.
  • the network device Since the D2D signal transmitted by the user equipment 1 and the uplink signal transmitted by the user equipment 2 are not aligned in time (14 symbols and 12 symbols cannot be aligned), the network device causes the uplink signal transmitted by the user equipment 2 to be received by the network device. At the same time, the leakage signal of the D2D signal transmitted by the user equipment 1 is received, causing inter-carrier interference.
  • the user equipment 1 transmits the D2D signal and transmits with the maximum power, and the inter-carrier interference is large, which causes the accuracy of the uplink signal received by the network device to the user equipment 2 to be reduced. Summary of the invention
  • Embodiments of the present invention provide a method and a device for controlling transmit power in D2D communication, so as to improve the accuracy of receiving uplink signals by a network device.
  • a method for controlling transmit power in device-to-device D2D communication includes: determining control information, where the control information includes first subframe information and performing on a first subframe corresponding to the first subframe information a first power control mode of power control, and second subframe control information and a second power control mode for performing power control on a second subframe corresponding to the second subframe information;
  • Dissipating the control information so that the user equipment of the D2D communication transmits the D2D signal according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information, and is in And transmitting, by using the transmit power determined according to the second power control manner, the D2D signal on the second subframe corresponding to the second subframe information.
  • determining control information includes:
  • first subframe information and first power control parameters for performing power control on a first subframe corresponding to the first subframe information, and second subframe information and corresponding to the second subframe information a second power control parameter for performing power control on the second subframe, where a value of the first power control parameter is different from a value of the second power control parameter;
  • Dissipating the control information so that the user equipment of the D2D communication transmits the D2D signal according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information, and And transmitting, by using the transmit power determined according to the second power control manner, the D2D signal on the second subframe corresponding to the second subframe information, including: Dissipating the first subframe information, the first power control parameter, the second subframe information, and the second power control parameter, so that the user equipment of the D2D communication is in the first subframe information Transmitting a D2D signal according to the transmit power determined according to the first power control parameter, and using the second power according to the second subframe corresponding to the second subframe information, on the corresponding first subframe.
  • the transmit power determined by the control parameters transmits a D2D signal.
  • determining control information includes:
  • Dissipating the control information so that the user equipment of the D2D communication transmits the D2D signal according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information, and And transmitting, by using the transmit power determined according to the second power control manner, the D2D signal on the second subframe corresponding to the second subframe information, including:
  • the power control parameters include:
  • the path loss compensation coefficient and the target received power of the network device receiving the uplink signal or the path loss compensation coefficient, the power offset amount, and the target receiving power of the network device receiving the uplink signal.
  • a second aspect of the present invention provides a method for controlling transmit power in device-to-device D2D communication, including: acquiring control information delivered by a network device, where the control information includes first subframe information and a first subframe information corresponding to the first subframe information First power control mode for power control on one subframe, and second Subframe information and a second power control mode for performing power control on a second subframe corresponding to the second subframe information;
  • a D2D signal according to a transmit power determined according to the first power control manner on a first subframe corresponding to the first subframe information, and corresponding to the second subframe information.
  • the D2D signal is transmitted on the second subframe using the transmit power determined according to the second power control mode.
  • acquiring control information delivered by the network device includes:
  • first subframe information sent by the network device Acquiring first subframe information sent by the network device, and first power control parameters for performing power control on the first subframe corresponding to the first subframe information, and second subframe information and The second power control parameter of the power control of the second subframe corresponding to the second subframe information, where the value of the first power control parameter is different from the value of the second power control parameter;
  • acquiring control information delivered by the network device includes:
  • determining the transmit power according to the power control parameter includes:
  • the transmit power of the transmitted D2D signal is determined according to the path loss estimation, the target receiving power of the network device that is sent by the network device, the path receiving power that is sent by the network device, and the power offset that is sent by the network device.
  • a network device in a third aspect, includes a determining unit and a sending unit, where
  • the determining unit is configured to determine control information, where the control information includes first subframe information, a first power control manner for performing power control on a first subframe corresponding to the first subframe information, and a second subframe Information and a second power control mode for performing power control on a second subframe corresponding to the second subframe information;
  • the sending unit is configured to send the control information determined by the determining unit, so that the user equipment of the D2D communication is used according to the first subframe in a first subframe corresponding to the first subframe information. Transmitting power determined by the power control mode to transmit a D2D signal, and corresponding to the second subframe information The D2D signal is transmitted on the second subframe using the transmit power determined according to the second power control mode.
  • the determining unit is specifically configured to determine control information as follows:
  • first subframe information and first power control parameters for performing power control on a first subframe corresponding to the first subframe information, and second subframe information and corresponding to the second subframe information a second power control parameter for performing power control on the second subframe, where a value of the first power control parameter is different from a value of the second power control parameter;
  • the sending unit is configured to send the control information according to the following manner, so that the user equipment of the D2D communication uses the first power control according to the first subframe corresponding to the first subframe information. Transmitting the D2D signal by using the determined transmit power, and transmitting the D2D signal according to the transmit power determined according to the second power control manner on the second subframe corresponding to the second subframe information: Subframe information, the first power control parameter, the second subframe information, and the second power control parameter, so that the user equipment of the D2D communication is in the first subframe corresponding to the first subframe information. Transmitting, by using a transmit power determined according to the first power control parameter, a D2D signal, and using a transmit power determined according to the second power control parameter on a second subframe corresponding to the second subframe information The D2D signal is transmitted.
  • the determining unit is specifically configured to determine control information as follows:
  • the sending unit is configured to send the control information according to the following manner, so that the user equipment of the D2D communication uses the first power control according to the first subframe corresponding to the first subframe information.
  • the mode determined transmit power transmits the D2D signal, and on the second subframe corresponding to the second subframe information, the D2D signal is transmitted by using the transmit power determined according to the second power control mode: And transmitting the first subframe information, the first power control parameter, the second subframe information, and the indication information, so that the user equipment of the D2D communication is in the first corresponding to the first subframe information.
  • the maximum transmit power transmits a D2D signal.
  • the power control parameters determined by the determining unit include:
  • the path loss compensation coefficient and the target received power of the network device receiving the uplink signal or the path loss compensation coefficient, the power offset amount, and the target receiving power of the network device receiving the uplink signal.
  • a fourth aspect provides a user equipment, where the user equipment includes an acquiring unit and a transmitting unit, where
  • the acquiring unit is configured to acquire control information that is sent by the network device, where the control information includes a first subframe information and a first power control manner for performing power control on a first subframe corresponding to the first subframe information, where And a second power control mode for performing power control on the second subframe information and the second subframe corresponding to the second subframe information;
  • the transmitting unit is configured to: according to the control information acquired by the acquiring unit, transmit a D2D signal by using a transmit power determined according to the first power control manner on a first subframe corresponding to the first subframe information, And transmitting a D2D signal using the transmit power determined according to the second power control mode on the second subframe corresponding to the second subframe information.
  • the acquiring unit is specifically configured to obtain, by using the following method, control information delivered by the network device:
  • first subframe information sent by the network device Acquiring first subframe information sent by the network device, and first power control parameters for performing power control on the first subframe corresponding to the first subframe information, and second subframe information and The second power control parameter of the power control of the second subframe corresponding to the second subframe information, where the value of the first power control parameter is different from the value of the second power control parameter;
  • the transmitting unit is specifically configured to: according to the control information, in the following manner Transmitting a D2D signal according to the transmit power determined according to the first power control manner on a first subframe corresponding to the frame information, and using the second power according to the second subframe corresponding to the second subframe information
  • the transmit power determined by the control mode transmits the D2D signal:
  • the acquiring unit is specifically configured to obtain, by using the following method, control information delivered by the network device:
  • the first subframe information sent by the network device and the first power control parameter for performing power control on the first subframe corresponding to the first subframe information, and the second subframe information and the indication are The indication information of the D2D signal transmitted by the maximum transmit power supported by the user equipment of the D2D communication on the second subframe corresponding to the second subframe information;
  • the transmitting unit is specifically configured to: according to the control information, transmit a D2D signal according to a transmit power determined according to the first power control manner on a first subframe corresponding to the first subframe information, and Transmitting the D2D signal using the transmit power determined according to the second power control mode on the second subframe corresponding to the second subframe information:
  • the transmit power used by the transmitting unit to transmit the D2D signal is specifically determined to be: Determining the transmit power of the transmitted D2D signal according to the path loss estimate, the target received power of the network device sent by the network device, and the path loss compensation coefficient sent by the network device; or
  • the transmit power of the transmitted D2D signal is determined according to the path loss estimation, the target receiving power of the network device that is sent by the network device, the path receiving power that is sent by the network device, and the power offset that is sent by the network device.
  • a communication device including a transmitter, a processor, a memory, and a bus, wherein the transmitter and the memory are both connected to the processor through the bus,
  • the memory is configured to store program code executed by the processor
  • the processor is configured to invoke a program stored in the memory to determine control information, where the control information includes first subframe information and a first power for performing power control on a first subframe corresponding to the first subframe information a control mode, and second subframe control information and a second power control mode for performing power control on the second subframe corresponding to the second subframe information;
  • the transmitter is configured to send the control information determined by the processor, so that the user equipment of the D2D communication uses the first power control manner according to the first subframe corresponding to the first subframe information.
  • the determined transmit power transmits a D2D signal, and the D2D signal is transmitted using the transmit power determined according to the second power control mode on a second subframe corresponding to the second subframe information.
  • the processor is specifically configured to determine control information in the following manner: determining first subframe information and in a first subframe corresponding to the first subframe information a first power control parameter for performing power control, and second subframe information and a second power control parameter for performing power control on a second subframe corresponding to the second subframe information, where the first power The value of the control parameter is different from the value of the second power control parameter;
  • the transmitter is specifically configured to send the control information according to the following manner, so that the user equipment of the D2D communication uses the first power control manner according to the first subframe corresponding to the first subframe information.
  • the transmit power determined by the control parameters transmits a D2D signal.
  • the processor is specifically configured to determine control information by: determining first subframe information and in a first subframe corresponding to the first subframe information a first power control parameter for performing power control, and second subframe information and an indication indicating a maximum transmit power to transmit a D2D signal supported by a user equipment using D2D communication on a second subframe corresponding to the second subframe information Information
  • the transmitter is specifically configured to send the control information according to the following manner, so that the user equipment of the D2D communication uses the first power control manner according to the first subframe corresponding to the first subframe information.
  • the transmit power determined by the first power control parameter transmits a D2D signal, and on a second subframe corresponding to the second subframe information, the D2D signal is transmitted using a maximum transmit power supported by the user equipment of the D2D communication.
  • the power control parameters determined by the processor include:
  • the path loss compensation coefficient and the target received power of the network device receiving the uplink signal or the path loss compensation coefficient, the power offset amount, and the target receiving power of the network device receiving the uplink signal.
  • a communication device including a receiver, a processor, a memory, a transmitter, and a bus, wherein the receiver, the transmitter, and the memory pass through the bus and the The processors are connected,
  • the memory is configured to store program code executed by the processor;
  • the receiver is configured to acquire control information that is sent by the network device, where the control information includes first subframe information and a first power control manner for performing power control on a first subframe corresponding to the first subframe information, where And a second power control mode for performing power control on the second subframe information and the second subframe corresponding to the second subframe information;
  • the processor is configured to invoke a program stored in the memory, and control, according to the control information acquired by the receiver, the transmitter to use the first subframe according to the first subframe information. Transmitting the D2D signal by the transmit power determined by the first power control mode, and transmitting the D2D signal by using the transmit power determined according to the second power control mode on the second subframe corresponding to the second subframe information.
  • the receiver is specifically configured to obtain control information delivered by the network device as follows:
  • first subframe information sent by the network device Acquiring first subframe information sent by the network device, and first power control parameters for performing power control on the first subframe corresponding to the first subframe information, and second subframe information and The second power control parameter of the power control of the second subframe corresponding to the second subframe information, where the value of the first power control parameter is different from the value of the second power control parameter;
  • the processor is specifically configured to control, according to the control information acquired by the receiver, the transmitter to use according to the first power control manner on a first subframe corresponding to the first subframe information. Determining the transmit power to transmit the D2D signal, and transmitting, on the second subframe corresponding to the second subframe information, the D2D signal according to the transmit power determined according to the second power control manner: according to the first subframe information And the first power control parameter, controlling, by the transmitter, to transmit a D2D signal on a first subframe corresponding to the first subframe information, using a transmit power determined according to the first power control parameter;
  • Controlling, by the second subframe information and the second power control parameter, the transmitter to determine, according to the second power control parameter, on a second subframe corresponding to the second subframe information Transmit power, transmit D2D signal.
  • the receiver is specifically configured to be as follows Obtain control information delivered by the network device:
  • the first subframe information sent by the network device and the first power control parameter for performing power control on the first subframe corresponding to the first subframe information, and the second subframe information and the indication are The indication information of the D2D signal transmitted by the maximum transmit power supported by the user equipment of the D2D communication on the second subframe corresponding to the second subframe information;
  • the processor is specifically configured to control, according to the control information acquired by the receiver, the transmitter to use according to the first power control manner on a first subframe corresponding to the first subframe information. Determining the transmit power to transmit the D2D signal, and transmitting, on the second subframe corresponding to the second subframe information, the D2D signal according to the transmit power determined according to the second power control manner: according to the first subframe information And controlling, by the first power control parameter, the transmitter to transmit a D2D signal using a transmit power determined according to the first power control parameter on a first subframe corresponding to the first subframe information;
  • the transmitter controlling, according to the second subframe information and the indication information, the transmitter to transmit a D2D signal by using a maximum transmit power supported by a user equipment of the D2D communication on a second subframe corresponding to the second subframe information.
  • the processor controls the transmit power used by the transmitter to transmit the D2D signal, which is specifically determined as follows: According to the path loss estimation, the network The network device sent by the device receives the target received power of the uplink signal and the path loss compensation coefficient sent by the network device, and determines the transmit power of the transmitted D2D signal; or
  • the transmit power of the transmitted D2D signal is determined according to the path loss estimation, the target receiving power of the network device that is sent by the network device, the path receiving power that is sent by the network device, and the power offset that is sent by the network device.
  • the network device determines and sends the control information of the D2D communication user equipment for power control, where the control information includes the first subframe information and the first subframe information.
  • the control information includes the first subframe information and the first subframe information.
  • the second power control mode, the user equipment of the D2D communication receives the control information determined and delivered by the network device, and may determine the transmission of the transmitted D2D signal by using different power control modes in the first subframe and the second subframe, respectively.
  • the transmit power used by the D2D communication device to transmit the D2D signal can be flexibly controlled according to the actual situation, thereby limiting the interference of the D2D signal to the uplink signal received by the network device, and improving the accuracy of the network device receiving the uplink signal.
  • FIG. 1 is a schematic diagram showing frequency division multiplexing of uplink signals of D2D signals and uplink communication in D2D communication in the prior art
  • FIG. 2 is a system architecture diagram of a method for controlling a transmit power in D2D communication according to an embodiment of the present invention
  • 3A is a flowchart showing a first implementation of a method for controlling transmit power in D2D communication according to Embodiment 1 of the present invention
  • FIG. 3B is a flowchart showing a second implementation of a method for controlling transmit power in D2D communication according to Embodiment 1 of the present invention
  • FIG. 3C is a first schematic diagram showing D2D subframe division and power control parameters corresponding to D2D subframes according to Embodiment 1 of the present invention
  • 3D is a third implementation flowchart of a method for controlling transmit power in D2D communication according to Embodiment 1 of the present invention.
  • FIG. 3E is a second schematic diagram of D2D subframe division and power control parameters corresponding to D2D subframes according to Embodiment 1 of the present invention.
  • FIG. 4A is a flowchart of a first implementation of a method for controlling transmit power in D2D communication according to Embodiment 2 of the present invention
  • 4B is a flowchart of a first implementation of a method for controlling transmit power in D2D communication according to Embodiment 2 of the present invention
  • 4C is a flowchart of a first implementation of a method for controlling transmit power in D2D communication according to Embodiment 2 of the present invention
  • FIG. 5 is a schematic structural diagram of a network device according to Embodiment 3 of the present invention.
  • FIG. 6 is a schematic structural diagram of a user equipment according to Embodiment 4 of the present invention.
  • FIG. 7 is a schematic structural diagram of a communication device according to Embodiment 5 of the present invention.
  • FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present invention. detailed description
  • FIG. 2 is a system architecture of a method for controlling a transmit power in D2D communication according to an embodiment of the present invention.
  • the user equipment 1 communicates with the network equipment, and the user equipment 1 transmits an uplink signal, and the network equipment receives an uplink signal transmitted by the user equipment 1, which is called uplink communication.
  • the device-to-device communication performed by the user equipment 2 and the user equipment 3 is D2D communication.
  • Uplink communication between the user equipment 1 and the network device, and D2D communication between the user equipment 2 and the user equipment 3 may use the same spectrum resource; the spectrum resource used by the user equipment 2 and the user equipment 3 for D2D communication is network equipment allocation of.
  • the network device in the embodiment of the present invention may be an evolved base station (eNB) in an LTE system, or a base station (NB) in a Universal Mobile Telecommunications System (UMTS). It may be other network devices that communicate with user equipment and perform resource scheduling for user equipment.
  • eNB evolved base station
  • NB base station
  • UMTS Universal Mobile Telecommunications System
  • Embodiments of the present invention provide a method for controlling transmit power in D2D communication, where the network device determines And transmitting, by the user equipment of the D2D communication, the control information of the power control, and the user equipment of the D2D communication performs power control on the transmit power used for transmitting the D2D signal according to the control information determined and delivered by the network device, thereby limiting the D2D signal to the network.
  • the interference of the uplink signal received by the device improves the reliability of the network device receiving the uplink signal.
  • the rate control method and equipment are described in detail.
  • the first embodiment of the present invention may be used to perform the method for controlling the transmit power in the D2D communication provided by the embodiment of the present invention.
  • the first device in the embodiment of the present invention may be the communication with the user equipment in the existing communication system.
  • the network device that performs resource scheduling for the user equipment but is not limited thereto, and may be other devices capable of performing corresponding functions.
  • the power control method is described as an example, and is of course not limited.
  • FIG. 3A is a flowchart showing a method for controlling transmission power in D2D communication according to an embodiment of the present invention. As shown in FIG. 3A, the method includes:
  • the network device determines control information for performing power control of the user equipment of the D2D communication.
  • the control information determined by the network device in the embodiment of the present invention includes: first subframe information and a first power control mode for performing power control on a first subframe corresponding to the first subframe information, and second subframe information and A second power control mode for performing power control on the second subframe corresponding to the two subframe information.
  • S102 The network device sends the control information determined in S101.
  • the network device may send the determined control information by using the signaling, so that the user equipment of the D2D communication determines, according to the control information, the first subframe corresponding to the first subframe information according to the first power control manner.
  • the transmit power transmits a D2D signal, and the D2D signal is transmitted using the transmit power determined according to the second power control mode on the second subframe corresponding to the second subframe information.
  • the network device determines and sends the control information of the power control of the user equipment of the D2D communication, where the control information includes the first Subframe information and a first power control mode for performing power control on a first subframe corresponding to the first subframe information, and second subframe information and power control on a second subframe corresponding to the second subframe information
  • the second power control mode, the user equipment of the D2D communication receives the control information determined and delivered by the network device, and may determine the transmission of the transmitted D2D signal by using different power control modes in the first subframe and the second subframe, respectively.
  • the transmit power used by the D2D communication device to transmit the D2D signal can be flexibly controlled according to the actual situation, thereby limiting the interference of the D2D signal to the uplink signal received by the network device, and improving the accuracy of the network device receiving the uplink signal.
  • the network device may determine the control information according to the manner in which the user equipment of the D2D communication performs power control. For example, in the embodiment of the present invention, the network device may determine and send the subframe information and the user equipment of the D2D communication corresponds to the subframe information. The power control parameter of the power control is performed on the subframe, so that the user equipment of the D2D communication determines the transmit power of the transmitted D2D signal according to the received power control parameter corresponding to the subframe information and the subframe information, and then transmits the D2D by using the determined transmit power. signal.
  • the power control includes two methods: open loop power control and closed loop power control.
  • whether the network device can perform power control according to the D2D communication user equipment is an open loop power control mode or a closed loop power control mode, and is determined and down.
  • Send the corresponding power control parameters For example, when the open loop power control mode is used, the network device can determine power control parameters such as target receiving power and path loss compensation coefficient of the network device receiving the uplink signal; when using the closed loop power control mode, the network device can determine, for example, network device receiving Power control parameters such as target received power, path loss compensation coefficient, and power offset of the uplink signal.
  • the power control parameters sent by the network device are different, and the manner in which the user equipment of the D2D communication determines the transmit power of the D2D signal is also different.
  • the user equipment of the D2D communication determines the transmission power of the D2D signal.
  • the network equipment issues power control parameters such as the target receiving power and the path loss compensation coefficient of the network device receiving the uplink signal
  • the user equipment of the D2D communication can be used.
  • Ring power control mode According to the path loss estimation, the target receiving power of the uplink signal received by the network device delivered by the network device, and the path loss compensation coefficient sent by the network device, the transmit power of the transmitted D2D signal is determined according to the following formula (1).
  • P D2D p . +a-PL Equation (J)
  • is the transmit power of the transmitted D2D signal determined by the D2D communication device, ⁇ .
  • It is the target receiving power of the network device receiving the uplink signal, " e 4 , 5 , 6 , 7 , 8 , 09 , is the path loss compensation coefficient, which is calculated by the user equipment of the D2D communication from the network device to the user equipment of the D2D communication.
  • the path loss estimate (Pathloss Estimate) may be the difference between the transmit power of the reference signal transmitted by the system and the received power of the reference signal detected by the user equipment.
  • the user equipment of the D2D communication determines the transmission power of the D2D signal to transmit two:
  • the user equipment of the D2D communication may adopt the closed loop power control mode, according to the path loss estimation, the network device.
  • the delivered network device receives the target received power of the uplink signal, the path loss compensation coefficient sent by the network device, and the power offset amount, and determines the transmit power of the transmitted D2D signal according to the following formula (2).
  • is the transmit power of the transmitted D2D signal determined by the D2D communication device, ⁇ .
  • the target receiving power of the network device receiving the uplink signal " e 4 , 5 , 6 , 7 , 8 , 09 , is the path loss compensation coefficient, which is the power offset amount, which is calculated by the user equipment of the D2D communication from the network device to Path loss Estimate between user equipments of D2D communication.
  • PL may be the difference between the transmission power of the reference signal transmitted by the system and the received power of the reference signal detected by the user equipment.
  • the network device receives the target received power ⁇ of the uplink signal.
  • the path loss compensation coefficient, and the power offset amount ⁇ ⁇ , are all set by the network device according to the actual communication conditions and sent to the user equipment of the D2D communication, which is obtained by the user equipment.
  • the D2D communication device is used to determine the D2D signal by using an open loop power control mode.
  • the network device determines and delivers the power control parameter of the D2D communication user equipment for power control, and the D2D communication user equipment performs power control on the transmit power of the transmitted D2D signal according to the power control parameter determined and delivered by the network device. . Therefore, in the embodiment of the present invention, the user equipment of the D2D communication may not transmit the D2D signal with the maximum transmit power, and the user equipment of the D2D communication controls the transmit power of the D2D signal in the D2D communication according to different control powers. Controlling, and further limiting, the interference of the D2D signal on the uplink signal received by the network device.
  • the network device may determine a power control parameter with a smaller value, so that the transmit power of the D2D signal determined by the user equipment of the D2D communication is relatively small, and thus The interference of the D2D signal on the uplink signal received by the network device is reduced, and the reliability of the network device receiving the uplink signal is improved.
  • the power control parameter may be used to determine the transmission on some or all of the subframes. Power and power control.
  • the transmit power of the D2D signal is controlled. Compared with the maximum transmit power of the D2D signal in the prior art, the transmit power of the D2D signal is reduced, and the D2D signal can be limited to the network device. The interference of the uplink signal, but if the transmission power of the D2D signal is reduced, the range of the D2D communication of the user equipment will also decrease, which affects the coverage of the D2D signal.
  • the embodiment of the invention provides a D2D transmission signal capable of reducing the interference of the D2D signal to the uplink signal received by the network device and ensuring the coverage of the D2D signal to a certain extent.
  • the method of controlling the transmit power is not limited to a D2D transmission signal.
  • the network device may determine that the value of the power control parameter in the partial subframe is relatively small, so that the transmit power of the D2D signal in the partial subframe is also relatively small, so as to reduce the D2D signal to receive by the network device.
  • the interference of the uplink signal is determined; and the value of the power control parameter in the other part of the subframe is determined to be relatively large, so that the transmission power of the D2D signal is relatively large to ensure coverage of the D2D signal.
  • the network device can determine that all of the subframes in the subframe for transmitting the D2D signal determine the transmission power of the D2D signal by means of power control.
  • the subframe for transmitting the D2D signal is divided into at least two categories, and the power control parameters corresponding to the subframes of different classes are different, so that the user equipment of the D2D communication can determine the transmission of different D2D signals. power.
  • the D2D signal in the subframe with relatively small transmit power has less interference to the uplink signal received by the network device, and protects the uplink signal received by the network device; the transmit power when transmitting the D2D signal is relatively
  • the D2D signal on the larger sub-frame can guarantee the coverage of the D2D signal.
  • the control information determined by the network device in the following includes the first subframe information and the first power control parameter for performing power control on the first subframe corresponding to the first subframe information, and the second subframe information and the second The second power control parameter for performing power control on the second subframe corresponding to the subframe information is described as an example.
  • the value of the first power control parameter is different from the value of the second power control parameter.
  • FIG. 3B is a flowchart of still another method for performing power control on transmit power of a D2D signal in D2D communication according to an embodiment of the present invention. As shown in FIG. 3B, the method includes:
  • the network device determines the first subframe information and the second subframe information.
  • the first subframe corresponding to the first subframe information and the second subframe corresponding to the second subframe information all use the transmit power determined according to the power control parameter to transmit the D2D signal.
  • the network device determines a first power control parameter for performing power control on the first subframe corresponding to the first subframe information.
  • S202b The network device determines, in the second subframe corresponding to the second subframe information, that the power control is performed. Two power control parameters.
  • the subframe in the D2D communication system includes a transmission subframe between a user equipment for transmitting an uplink signal to a network device, and a D2D transmission subframe for transmitting a D2D signal.
  • the network device divides the D2D transmission subframe used for transmitting the D2D signal into a first subframe and a second subframe, where the first subframe uses the first power control parameter, and the D2D signal is used.
  • the transmit power is controlled; the second sub-frame uses the second power control parameter to control the transmit power of the D2D signal, as shown in Figure 3C.
  • the value of the first power control parameter is different from the value of the second power control parameter, so that the transmit power of the D2D signal transmitted by the first subframe and the D2D signal transmitted by the second subframe are used.
  • the transmission power is different. Therefore, the transmission power of the D2D signal is relatively small, and the interference of the D2D signal to the uplink signal received by the network device can be reduced; and the transmission power of the D2D signal is relatively large, and the coverage of the D2D signal can be guaranteed.
  • the embodiment of the present invention may determine that the target receiving power of the network device in the first power control parameter corresponding to the first subframe is that the path loss compensation coefficient is “1, and the user equipment determined by the D2D communication determines the usage.
  • the transmit power of the first subframe to transmit the D2D signal is:
  • the embodiment of the present invention can determine that the target receiving power of the network device receiving the uplink signal in the second power control parameter corresponding to the second subframe is 2 , and the path loss compensation coefficient is “1, then D2D.
  • the network device determines p c ⁇ p 2 , and therefore, the user of the D2D communication
  • the device uses the first subframe to transmit the transmit power of the D2D signal.
  • the transmit power of the D2D signal is small, so the first subframe and the first power control parameter can be adopted.
  • the uplink signal received by the network device is protected to reduce interference of the D2D signal; and the second subframe and the second power control parameter can ensure coverage of the D2D signal.
  • execution order of S202a and S202b in the embodiment of the present invention is in no particular order. It should be further noted that, in the embodiment of the present invention, which part of the subframe is determined by the network device as the first subframe, and which part of the subframe is determined as the second subframe may be determined according to actual communication requirements.
  • the number of the categorized sub-frames is not limited to the two types, and may be more than two types.
  • the embodiment of the present invention is shown in FIG. 3C for illustrative purposes only, and is not limited thereto.
  • the network device sends the first subframe information determined in S201, the second subframe information, the first power control parameter determined in S202a, and the second power control parameter determined in S202b, so that the user equipment of the D2D communication is in the first And transmitting, on the first subframe corresponding to the one subframe information, the D2D signal by using the transmit power determined according to the first power control parameter, and determining, by using the second power control parameter, on the second subframe corresponding to the second subframe information.
  • the transmit power transmits a D2D signal.
  • the transmit power of the D2D signal transmitted by the first subframe is different from the transmit power of the D2D signal transmitted by the second subframe, so that the transmit power of the D2D signal is relatively small, and the D2D signal can be reduced.
  • the network device may determine that a partial subframe in a subframe for transmitting a D2D signal uses a power control manner for determining a transmission power according to a power control parameter, and another portion of the subframe is still communicated by D2D.
  • the maximum transmit power supported by the user equipment is used as the power control mode of the transmit power of the D2D signal.
  • the user equipment of the D2D signal determines the transmit power of the D2D signal transmitted by the corresponding subframe according to the subframe information determined and delivered by the network device and the corresponding power control parameter.
  • the D2D signal is transmitted on the partial power by using the transmit power of the power control to reduce the interference of the D2D signal on the uplink signal received by the network device, and the reliability of the network device to receive the uplink signal is improved.
  • the D2D signal is transmitted at the maximum transmit power supported by the user equipment of the D2D communication on another part of the subframe, and the coverage of the D2D signal can be guaranteed.
  • FIG. 3D is a flowchart of a method for performing power control on a transmit power of a D2D signal in a pair of D2D communication according to an embodiment of the present invention. As shown in FIG. 3D, the method includes:
  • S301 The network device determines the first subframe information and the second subframe information.
  • the first subframe corresponding to the first subframe information uses the transmit power determined according to the power control parameter to transmit the D2D signal
  • the second subframe corresponding to the second subframe information uses the maximum transmit power to transmit the D2D signal
  • S302a The network device determines, by using the first subframe information, the first subframe to perform power control. Power control parameters.
  • the network device determines indication information indicating that the maximum transmit power of the D2D signal is supported by the user equipment supported by the D2D communication on the second subframe corresponding to the second subframe information.
  • the network device sends the first subframe information and the second subframe information determined in S301, the first power control parameter determined in S302a, and the indication information determined in S302b, so that the user equipment of the D2D communication is in the first sub And transmitting, on the first subframe corresponding to the frame information, the D2D signal by using the transmit power determined according to the first power control parameter; and transmitting, on the second subframe corresponding to the second subframe information, the D2D signal by using the maximum transmit power.
  • the subframe in the D2D communication system includes a transmission subframe between a user equipment for transmitting an uplink signal to a network device, and a D2D transmission subframe for transmitting a D2D signal.
  • the network device divides the D2D transmission subframe used for transmitting the D2D signal into a first subframe and a second subframe, where the first subframe corresponding to the first subframe information is used according to the power control parameter.
  • the determined transmit power transmits the D2D signal
  • the second subframe corresponding to the second subframe information transmits the D2D signal using the maximum transmit power, as shown in FIG. 3E.
  • the transmit power of the D2D signal transmitted by using the first subframe is determined according to the first power control parameter, and the D2D signal transmitted by using the second subframe is still transmitted at the maximum transmit power, and then used.
  • the transmit power of the first sub-frame transmitting the D2D signal is different from the transmit power of the D2D signal transmitted by the second sub-frame.
  • the transmit power of the D2D signal transmitted by the first subframe is relatively small, which can reduce the interference of the D2D signal on the uplink signal received by the network device, and improve the reliability of the network device receiving the uplink signal.
  • the transmit power of the D2D signal transmitted by the second subframe is the maximum power, and the transmit power of the D2D signal is relatively large, which can ensure the coverage of the D2D signal.
  • which part of the subframe is determined by the network device as the first subframe, and which part of the subframe is determined as the second subframe may be determined according to actual communication requirements, and the determined first sub-frame
  • the frame may also be divided into different categories, and the first subframes of different classes correspond to different power control parameters.
  • the embodiment of the present invention is shown in FIG. 3E for illustrative purposes only and is not limited.
  • the network device determines and sends the subframe information, and the subframe corresponding to the subframe information enters
  • the power control parameter of the line power control and the indication information of the maximum transmit power of the user equipment indicating the D2D communication are enabled, so that the user equipment can determine, according to the subframe information and the power control parameter determined and delivered by the network device, in a part of the subframe. Transmitting the transmit power of the D2D signal; transmitting the D2D signal with the maximum transmit power directly according to the indication information on another partial subframe.
  • the user equipment of the D2D communication may not need to transmit the D2D signal by using the maximum transmit power supported by the user equipment of the 2D communication in all subframes, and the user equipment of the D2D communication determines to use the D2D signal according to the power control parameter.
  • the transmit power can be adapted to the subframe information and power control parameters determined and delivered by the network device, and the D2D signal is transmitted on the part of the transmit power that is smaller than the maximum transmit power supported by the user equipment of the D2D communication, thereby limiting the D2D signal to the network device.
  • the interference of the received uplink signal improves the reliability of the network device receiving the uplink signal.
  • the D2D signal can be transmitted with the maximum transmit power to ensure the coverage of the D2D signal.
  • the method for controlling the transmit power in the D2D communication provided by the embodiment of the present invention is used as an example.
  • the second device may be a user equipment in D2D communication, and of course
  • the user equipment in D2D communication will be described as an example.
  • FIG. 4A is a flowchart showing a method for controlling transmission power in D2D communication performed by a user equipment for D2D communication according to an embodiment of the present invention. As shown in FIG. 4A, the method includes:
  • S401 The user equipment of the D2D communication acquires control information sent by the network device.
  • the user equipment of the D2D communication can obtain the control information sent by the network device by analyzing the instructions sent by the network device.
  • the control information acquired by the user equipment of the D2D communication in the embodiment of the present invention includes the first subframe information and the first power control mode for performing power control on the first subframe corresponding to the first subframe information, and the second subframe information. And a second power control mode for performing power control on the second subframe corresponding to the second subframe information.
  • the control information acquired by the user equipment of the D2D communication in the embodiment of the present invention may include the subframe control information and the power control parameter for performing power control on the subframe corresponding to the subframe information, and the power of the user equipment of the D2D communication according to the subframe information and the subframe information.
  • Control parameters to determine the transmit power of the transmitted D2D signal The rate, in turn, uses the determined transmit power to transmit the D2D signal.
  • the power control parameter may include whether the power control mode of the network device according to the user equipment of the D2D communication is an open loop power control mode or a closed loop power control mode, and different power control parameters are sent.
  • the user equipment of the D2D communication can obtain power control parameters such as the target receiving power and the path loss compensation coefficient that are determined and sent by the network device, such as the network device receiving the uplink signal;
  • the user equipment of the D2D communication may obtain power control parameters such as target receiving power, path loss compensation coefficient, and power offset amount determined and delivered by the network device, such as the network device receiving the uplink signal.
  • the user equipment of the D2D communication transmits the D2D signal according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information according to the control information acquired in S401, and the second subframe information is used.
  • a D2D signal is transmitted on the corresponding second subframe using the transmit power determined according to the second power control mode.
  • the user equipment of the D2D communication can transmit the D2D signal according to the different control information sent by the network device and the transmission power determined by using different power control modes.
  • the open loop control mode or the closed loop control mode may be used to determine the transmit power of the D2D signal, which may be specifically implemented as follows:
  • the transmission power is determined according to the path loss estimation, the target receiving power of the network device that is sent by the network device, and the path loss compensation coefficient sent by the network device; or
  • the transmit power is determined according to the path loss estimation, the target receiving power of the network device that is sent by the network device, the path receiving power that is sent by the network device, and the power offset that is sent by the network device.
  • the user equipment of the D2D communication acquires the control information of the power control performed by the user equipment of the D2D communication delivered by the network device, where the control information includes the first subframe information and Power control on the first subframe corresponding to the first subframe information
  • the first power control mode, and the second subframe information and the second power control mode for performing power control on the second subframe corresponding to the second subframe information the user equipment of the D2D communication may be in the first subframe and
  • the second sub-frame uses different power control methods to determine the transmit power of the transmitted D2D signal, and realizes the dynamic adjustment control of the transmit power used for transmitting the D2D signal in the D2D communication, that is, the user equipment of the D2D communication in the prior art is simple.
  • the user equipment of the D2D communication in the embodiment of the present invention can flexibly control the transmission power used by the D2D communication device to transmit the D2D signal according to actual conditions, thereby limiting the uplink signal received by the D2D signal to the network device.
  • the interference increases the accuracy of the network device receiving the uplink signal.
  • the D2D communication of the user equipment of the D2D communication is no longer simply transmitting the D2D signal according to the maximum transmission power, and the transmission power of the user equipment of the D2D communication to the D2D signal can be adapted to different power control issued by the network equipment.
  • the parameters, corresponding to different transmit powers enable power control of the transmit power of the D2D signal transmitted in the D2D communication, thereby limiting the interference of the D2D signal to the uplink signal received by the network device, but if the transmit power of the D2D signal is reduced, the D2D The range of the D2D communication performed by the user equipment of the communication is also reduced, which affects the coverage of the D2D signal.
  • the embodiments of the present invention provide a method for controlling the transmit power of a D2D transmit signal that can reduce the interference of the D2D signal to the uplink signal received by the network device and ensure the coverage of the D2D signal to a certain extent.
  • FIG. 4B is a schematic diagram of a method for controlling a transmit power of a D2D signal by a D2D communication user equipment according to an embodiment of the present invention. As shown in FIG. 4B, the method includes:
  • S501 The user equipment of the D2D communication acquires the first subframe information and the second subframe information that are sent by the network device.
  • the subframe for transmitting the D2D signal determined by the user equipment of the D2D communication includes at least two types of subframes, and each of the at least two types of subframes performs power control according to the power control parameter.
  • Determining the transmit power, the subframe information to be acquired by the user equipment of the D2D communication includes the first subframe information and the second subframe information, and the first subframe corresponding to the first subframe information and the second subframe corresponding to the second subframe information
  • the frames each transmit a D2D signal using the transmit power determined in accordance with the power control parameters.
  • the user equipment of the D2D communication acquires a first power control parameter for performing power control on a first subframe corresponding to the first subframe information that is sent by the network device, and performs a second subframe that is corresponding to the second subframe information.
  • the second power control parameter of the power control, the value of the first power control parameter is different from the value of the second power control parameter.
  • the D2D signal is transmitted according to the transmit power determined according to the first power control parameter, according to the first subframe information and the first power control parameter, in the first subframe corresponding to the first subframe information, and according to the second subframe.
  • the D2D signal is transmitted according to the transmit power determined according to the first power control parameter, and is used in the second subframe corresponding to the second subframe information.
  • the transmit power determined by the second power control parameter transmits the D2D signal, so the transmit power of the D2D signal transmitted by the first subframe is different from the transmit power of the D2D signal transmitted by the second subframe, and thus, the transmit power of the D2D signal Relatively small, it can reduce the interference of the D2D signal to the uplink signal received by the network device; if the transmit power of the D2D signal is relatively large, the coverage of the D2D signal can be guaranteed.
  • FIG. 4C is a schematic diagram of a method for controlling a transmit power of a D2D signal by a D2D communication user equipment according to an embodiment of the present invention. As shown in FIG. 4C, the method includes:
  • the user equipment of the D2D communication acquires the first subframe information and the second subframe information that are sent by the network device.
  • the first subframe corresponding to the first subframe information is used to transmit the D2D signal according to the transmit power determined according to the power control parameter, and the second subframe corresponding to the second subframe information is still supported by the user equipment of the D2D communication.
  • the maximum transmit power is used as the transmit power of the D2D signal.
  • S602a The user equipment of the D2D communication acquires the first power control parameter for performing power control on the first subframe corresponding to the first subframe information that is sent by the network device.
  • S602b The user equipment of the D2D communication acquires the second subframe information that is sent by the network device, and the indication information that indicates the maximum transmit power of the D2D signal that is supported by the user equipment that uses the D2D communication on the second subframe corresponding to the second subframe information.
  • the execution order of S602a and S602b in the embodiment of the present invention is in no particular order.
  • S603a The D2D signal is transmitted according to the transmit power determined according to the first power control parameter on the first subframe corresponding to the first subframe information according to the first subframe information and the first power control parameter.
  • the D2D signal is transmitted by using the maximum transmit power supported by the user equipment of the D2D communication on the second subframe corresponding to the second subframe information according to the second subframe information and the indication information.
  • the transmit power of the D2D signal transmitted by using the first subframe is determined according to the first power control parameter, and the D2D signal transmitted by using the second subframe is still transmitted at the maximum transmit power, and then used.
  • the transmit power of the first sub-frame transmitting the D2D signal is different from the transmit power of the D2D signal transmitted by the second sub-frame.
  • the transmit power of the D2D signal transmitted by the first subframe is relatively small, which can reduce the interference of the D2D signal on the uplink signal received by the network device, and improve the reliability of the network device receiving the uplink signal.
  • the transmit power of the D2D signal transmitted by the second subframe is the maximum power, and the transmit power of the D2D signal is relatively large, which can ensure the coverage of the D2D signal.
  • the user equipment of the D2D communication in the first embodiment of the present invention performs the control process of the transmit power of the D2D signal, which is applicable to the control implementation of the transmit power of the D2D signal provided by the second embodiment of the present invention.
  • the second embodiment is not sufficiently similar, reference may be made to the description of the first embodiment and related drawings.
  • the user equipment of the D2D communication may not need to transmit the D2D signal with the maximum transmit power supported by the user equipment of the 2D communication in all subframes, and the user equipment of the D2D communication sends the power control parameter in some or all subframes.
  • the D2D signal is transmitted by using the transmit power determined according to the power control parameter, thereby limiting the interference of the D2D signal on the uplink signal received by the network device, and improving the reliability of the network device receiving the uplink signal.
  • the network device 500 is provided with the determining unit 501 and the sending unit 502, where the network device includes a determining unit 501 and a sending unit 502, as shown in FIG. 5, where the method for controlling the transmit power in the D2D communication is provided.
  • a determining unit 501 configured to determine control information, where the control information includes the first subframe information and is at the first a first power control mode for performing power control on the first subframe corresponding to the subframe information, and a second power control mode for performing power control on the second subframe corresponding to the second subframe information.
  • the sending unit 502 is configured to send the control information determined by the determining unit 501, so that the user equipment of the D2D communication transmits the D2D using the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information. And transmitting a D2D signal using the transmit power determined according to the second power control mode on the second subframe corresponding to the second subframe information.
  • the determining unit 501 is specifically configured to determine, according to the following manner, control information for power control of the user equipment of the D2D communication:
  • the sending unit 502 is configured to send the control information in the following manner, so that the user equipment of the D2D communication transmits the D2D according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information. And transmitting, on the second subframe corresponding to the second subframe information, the D2D signal by using the transmit power determined according to the second power control manner:
  • the transmit power determined by a power control parameter transmits a D2D signal, and on the second subframe corresponding to the second subframe information, the D2D signal is transmitted using the transmit power determined according to the second power control parameter.
  • the determining unit 501 is specifically configured to determine control information in the following manner: determining the first subframe information and performing power on the first subframe corresponding to the first subframe information. Controlling the first power control parameter, and the second subframe information and the indication information indicating the maximum transmit power transmission D2D signal supported by the user equipment using the D2D communication on the second subframe corresponding to the second subframe information.
  • the sending unit 502 is specifically configured to send the control information as follows to enable the user of the D2D communication.
  • the device transmits the D2D signal according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information, and uses the second power according to the second subframe corresponding to the second subframe information.
  • the transmit power determined by the control mode transmits the D2D signal:
  • the parameter determined transmit power transmits the D2D signal, and on the second subframe corresponding to the second subframe information, the D2D signal is transmitted using the maximum transmit power supported by the user equipment of the D2D communication.
  • determining the power control parameters determined by the unit 501 includes:
  • the path loss compensation coefficient and the target received power of the network device receiving the uplink signal are combined. Or the path loss compensation coefficient, the power offset, and the target received power of the network device receiving the uplink signal.
  • the network device provided by the embodiment of the present invention can be used to perform the control method for implementing the transmit power of the D2D communication involved in the first embodiment and the accompanying drawings. Therefore, the related description of the network device provided by the embodiment of the present invention is not detailed enough. The related description of the implementation of the first embodiment and its drawings will not be repeated here.
  • the network device determines and sends the control information of the power control of the user equipment of the D2D communication, where the control information includes the first subframe information and the first subframe corresponding to the first subframe information. a first power control mode for performing power control, and a second power control mode for performing power control on the second subframe corresponding to the second subframe information, where the user equipment of the D2D communication receives the network device determination And transmitting the control information, respectively, using different power control modes on the first subframe and the second subframe to determine the transmit power of the transmitted D2D signal, thereby realizing dynamic adjustment of the transmit power used for transmitting the D2D signal in the D2D communication Controlling, that is, the user equipment of the D2D communication in the prior art transmits the D2D signal with the maximum transmit power, and the user equipment of the D2D communication in the embodiment of the present invention can flexibly control the transmission when the D2D communication device transmits the D2D signal according to actual conditions.
  • the power in turn, can
  • the user equipment 600 is provided in the embodiment of the present invention.
  • the user equipment includes an obtaining unit 601 and a transmitting unit 602, where
  • the acquiring unit 601 is configured to acquire control information that is sent by the network device, where the control information includes the first subframe information, a first power control manner for performing power control on the first subframe corresponding to the first subframe information, and the second The subframe information and the second power control mode for performing power control on the second subframe corresponding to the second subframe information.
  • the transmitting unit 602 is configured to transmit, according to the control information acquired by the acquiring unit 601, the D2D signal according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information, and the second subframe information A D2D signal is transmitted on the corresponding second subframe using the transmit power determined according to the second power control mode.
  • the obtaining unit 601 is specifically configured to obtain the control information delivered by the network device as follows:
  • the second sub-frame performs power control of the second power control parameter, where the value of the first power control parameter is different from the value of the second power control parameter.
  • the transmitting unit 602 is specifically configured to transmit, according to the control information, the D2D signal according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information, and corresponding to the second subframe information.
  • the D2D signal is transmitted on the second subframe using the transmit power determined according to the second power control mode:
  • the obtaining unit 601 is specific Used to obtain the control information delivered by the network device as follows:
  • the second sub-frame transmits indication information of the D2D signal using the maximum transmit power supported by the user equipment of the D2D communication.
  • the transmitting unit 602 is specifically configured to transmit, according to the control information, the D2D signal according to the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information, and corresponding to the second subframe information.
  • the D2D signal is transmitted on the second subframe using the transmit power determined according to the second power control mode:
  • the transmitting unit 602 transmits the transmit power used by the D2D signal, which is specifically determined as follows:
  • the transmit power of the transmitted D2D signal is determined according to the path loss estimation, the target receiving power of the network device that is sent by the network device, and the path loss compensation coefficient sent by the network device. Or
  • the transmit power of the transmitted D2D signal is determined according to the path loss estimation, the target receiving power of the network device that is sent by the network device, the path receiving power that is sent by the network device, and the power offset that is sent by the network device.
  • the user equipment provided by the embodiment of the present invention can be used to perform the control method of the transmit power of the D2D communication involved in the implementation of the second embodiment and the accompanying drawings. Therefore, the related description of the user equipment provided by the embodiment of the present invention is not detailed enough. The related description of the implementation 2 and its drawings will not be repeated here.
  • the user equipment provided by the embodiment of the present invention acquires control information for performing power control on the user equipment of the D2D communication delivered by the network device, where the control information includes the first subframe information and the first subframe. a first power control mode for performing power control on the first subframe corresponding to the information, and a second power control mode for performing power control on the second subframe corresponding to the second subframe information,
  • the user equipment of the D2D communication may determine the transmit power of the transmitted D2D signal by using different power control modes in the first subframe and the second subframe, respectively, to implement dynamic adjustment control on the transmit power used for transmitting the D2D signal in the D2D communication, That is, the user equipment of the D2D communication in the prior art can transmit the D2D signal with the maximum transmit power, and the user equipment of the D2D communication in the embodiment of the present invention can flexibly control the transmit power used when the D2D communication device transmits the D2D signal according to actual conditions. In addition, the interference of the D2D signal to the uplink signal received by the network device can be restricted, and the accuracy of the network device receiving the uplink signal is improved.
  • the fifth embodiment of the present invention provides a communication device 700.
  • the communication device includes a transmitter 701, and is processed.
  • the memory 703 is configured to store program code executed by the processor 702.
  • the processor 702 is configured to invoke a program stored in the memory 703, and determine control information for performing power control by the user equipment of the D2D communication, where the control information includes the first subframe information and the power performed on the first subframe corresponding to the first subframe information. Controlling a first power control mode, and second subframe control information and a second power control mode for performing power control on a second subframe corresponding to the second subframe information.
  • the transmitter 701 is configured to send the control information determined by the processor 702, so that the user equipment of the D2D communication transmits the D2D signal by using the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information. And transmitting the D2D signal using the transmit power determined according to the second power control manner on the second subframe corresponding to the second subframe information.
  • the processor 702 is specifically configured to determine control information in the following manner: determining the first subframe information and performing power on the first subframe corresponding to the first subframe information. Controlling the first power control parameter, and the second subframe control information and the second power control parameter for performing power control on the second subframe corresponding to the second subframe information, where the first power The value of the control parameter is different from the value of the second power control parameter.
  • the transmitter 701 is specifically configured to send the control information in the following manner, so that the user equipment of the D2D communication transmits the D2D signal by using the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information. And transmitting, on the second subframe corresponding to the second subframe information, the D2D signal by using the transmit power determined according to the second power control manner:
  • the transmit power determined by a power control parameter transmits a D2D signal, and on the second subframe corresponding to the second subframe information, the D2D signal is transmitted using the transmit power determined according to the second power control parameter.
  • the processor 702 is specifically configured to determine control information in the following manner: determining the first subframe information and performing power on the first subframe corresponding to the first subframe information. Controlling the first power control parameter, and the second subframe information and the indication information indicating the maximum transmit power transmission D2D signal supported by the user equipment using the D2D communication on the second subframe corresponding to the second subframe information.
  • the transmitter 701 is specifically configured to send the control information in the following manner, so that the user equipment of the D2D communication transmits the D2D signal by using the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information. And transmitting, on the second subframe corresponding to the second subframe information, the D2D signal by using the transmit power determined according to the second power control manner:
  • the parameter determined transmit power transmits the D2D signal, and on the second subframe corresponding to the second subframe information, the D2D signal is transmitted using the maximum transmit power supported by the user equipment of the D2D communication.
  • the power control parameters determined by the processor 702 include:
  • the path loss compensation coefficient and the target received power of the network device receiving the uplink signal can be used to implement the implementation and the related
  • the communication device determines and delivers control information for power control of the user equipment of the D2D communication, where the control information includes the first subframe information and the first subframe corresponding to the first subframe information. a first power control mode for performing power control, and a second power control mode for performing power control on the second subframe corresponding to the second subframe information, where the user equipment of the D2D communication receives the network device determination And transmitting the control information, respectively, using different power control modes on the first subframe and the second subframe to determine the transmit power of the transmitted D2D signal, thereby realizing dynamic adjustment of the transmit power used for transmitting the D2D signal in the D2D communication Controlling, that is, the user equipment of the D2D communication in the prior art transmits the D2D signal with the maximum transmit power, and the user equipment of the D2D communication in the embodiment of the present invention can flexibly control the transmission when the D2D communication device transmits the D2D signal according to actual conditions. Power, which in turn can limit the interference of the
  • the sixth embodiment of the present invention provides a communication device 800.
  • the communication device includes a receiver 801, and the processing device includes a receiver 801, which is provided in the second embodiment of the present invention.
  • the receiver 801 is configured to acquire control information that is sent by the network device, where the control information includes first subframe information, a first power control manner for performing power control on a first subframe corresponding to the first subframe information, and a second The subframe information and the second power control mode for performing power control on the second subframe corresponding to the second subframe information.
  • the processor 802 is configured to invoke a program stored in the memory 803, and control, according to the control information acquired by the receiver 801, the transmitter 804 to use the first subframe corresponding to the first subframe information according to the first
  • the power control mode determines the transmit power to transmit the D2D signal, and transmits the D2D signal on the second subframe corresponding to the second subframe information using the transmit power determined according to the second power control mode.
  • the receiver 801 is specifically configured to obtain the control information delivered by the network device as follows:
  • the second sub-frame performs power control of the second power control parameter, where the value of the first power control parameter is different from the value of the second power control parameter.
  • the processor 802 is specifically configured to control, according to the control information acquired by the receiver 801, the transmitter 804 to transmit the D2D signal by using the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information. And transmitting, by using the transmit power determined according to the second power control manner, the D2D signal on the second subframe corresponding to the second subframe information:
  • the transmitter 804 controlling, by the first subframe information and the first power control parameter, the transmitter 804 to transmit the D2D signal on the first subframe corresponding to the first subframe information, using the transmit power determined according to the first power control parameter;
  • the control transmitter 804 Based on the second subframe information and the second power control parameter, the control transmitter 804 transmits the D2D signal on the second subframe corresponding to the second subframe information using the transmit power determined according to the second power control parameter.
  • the receiver 801 is specifically configured to obtain control information delivered by the network device as follows:
  • the processor 802 is specifically configured to control, according to the control information acquired by the receiver 801, the transmitter 804 to transmit the D2D signal by using the transmit power determined according to the first power control manner on the first subframe corresponding to the first subframe information. And using the second subframe according to the second subframe information The second power control mode determines the transmit power to transmit the D2D signal:
  • the transmitter 804 Controlling, by the first subframe information and the first power control parameter, the transmitter 804 to transmit the D2D signal using the transmit power determined according to the first power control parameter on the first subframe corresponding to the first subframe information;
  • the control transmitter 804 Based on the second subframe information and the indication information, the control transmitter 804 transmits the D2D signal using the maximum transmit power supported by the user equipment of the D2D communication on the second subframe corresponding to the second subframe information.
  • the processor 802 controls the transmit power used by the transmitter 804 to transmit the D2D signal, which is determined as follows: According to the path loss estimation, under the network device The transmitted network device receives the target received power of the uplink signal and the path loss compensation coefficient sent by the network device, and determines the transmit power of the transmitted D2D signal. Or
  • the transmit power of the transmitted D2D signal is determined according to the path loss estimation, the target receiving power of the network device that is sent by the network device, the path receiving power that is sent by the network device, and the power offset that is sent by the network device.
  • the communication device provided in the sixth embodiment of the present invention can be used to perform the control method for implementing the transmit power of the D2D communication involved in the second embodiment and the accompanying drawings, and the related description of the communication device shown in FIG. 8 is not enough in the sixth embodiment of the present invention.
  • the related description of the communication device shown in FIG. 8 is not enough in the sixth embodiment of the present invention.
  • the communication device acquires control information for performing power control on the user equipment of the D2D communication that is sent by the network device, where the control information includes the first subframe information and the first subframe corresponding to the first subframe information. a first power control mode for performing power control, and a second power control mode for performing power control on the second subframe corresponding to the second subframe information, where the user equipment of the D2D communication can be first Different power control modes are used on the subframe and the second subframe to determine the transmit power of the transmitted D2D signal, thereby realizing dynamic adjustment control of the transmit power used for transmitting the D2D signal in the D2D communication, that is, compared with the D2D communication in the prior art.
  • the user equipment simply transmits the D2D signal with the maximum transmit power.
  • the user equipment of the D2D communication can flexibly control the transmit power used when the D2D communication device transmits the D2D signal according to actual conditions, thereby limiting the D2D letter.
  • the interference of the uplink signal received by the network device improves the accuracy of the network device receiving the uplink signal.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) in which computer usable program code is embodied.
  • a computer-usable storage medium including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明公开了一种D2D通信中发射功率的控制方法及设备,本发明中网络设备确定并下发控制信息,控制信息包括第一子帧信息和在第一子帧信息对应的第一子帧上进行功率控制的第一功率控制方式,以及第二子帧信息和在第二子帧信息对应的第二子帧上进行功率控制的第二功率控制方式;D2D 通信的用户设备获取网络设备下发的控制信息,在第一子帧信息对应的第一子帧上使用根据第一功率控制方式确定的发射功率发射D2D信号,且在第二子帧信息对应的第二子帧上使用根据第二功率控制方式确定的发射功率发射 D2D信号。通过本发明可以限制D2D信号对网络设备接收的上行信号的干扰,提高网络设备接收上行信号的准确性。

Description

一种 D2D通信中发射功率的控制方法及设备 技术领域
本发明涉及无线通信技术领域, 尤其涉及一种 D2D通信中发射功率的控 制方法及设备。 背景技术
用户设备之间的临近服务 (Device to Device Proximity Service , D2D ProSe ), 已经成为第三代合作伙伴计戈 'J ( 3rd Generation partnership project, 3GPP ) 长期演进( Long Term Evolution, LTE ) 系统研究的主要课题。
实现 D2D ProSe业务的通信过程可简称为设备到设备 ( Device to Device , D2D )通信, 目前进行 D2D 通信的用户设备, 在发射 D2D信号时, 釆用单 一的最大功率发射。 比如进行 D2D通信的用户设备支持 23dBm的发射功率, 那么该用户设备在发射 D2D信号时, 使用 23dBm的发射功率发射。
在实际通信过程中, 进行 D2D 通信的用户设备发射的 D2D信号、和进行 上行通信的用户设备发射的上行信号, 会通过频分复用的方式复用在一起, 如图 1所示。图 1所示为一个 10MHz带宽( 50个物理资源块对( hysical resource block pair, PRB Pair ) , 1毫秒时间长度的示意图。 如图 1所示, 在 10MHz带 宽中, 共有 50个 PRB, 其中, 第 1个到第 N个 PRB、 第 M个到第 50个 PRB用作 发射上行信号, 第 N+1个到第 M-1个 PRB用作发射 D2D信号。
由图 1可知, 进行 D2D信号发射时, 釆用扩展循环前缀 (Extended Cyclic Prefix, Extended CP)子帧格式, 即在 lms时间内, 传输 12个正交频分复用
( Orthogonal Frequency Division Multiplexing, OFDM )符号; 进行上行信号 发射时, 釆用正常循环前缀( Normal Cyclic Prefix, Normal CP )子帧格式, 也即在 lms时间内, 传输 14个 OFDM符号。 发射 D2D信号的子帧格式和发射 上行信号的子帧格式不相同, 故 D2D信号和上行信号之间存在载波干扰。 如 图 1所示,假设有一个用户设备 1正在使用最大功率在 PRB#N+1上发射 D2D信 号, 同时有一个用户设备 2使用 PRB#N发射上行信号。 由于用户设备 1发射的 D2D信号和用户设备 2发射的上行信号在时间上没有对齐( 14个符号和 12个 符号不能对齐) , 造成网络设备在 PR^^ :接收用户设备 2发射的上行信号 时, 会同时收到用户设备 1发射的 D2D信号的泄露信号, 造成载波间干扰。 用户设备 1发射 D2D信号釆用最大功率发射, 载波间干扰会很大, 造成网络 设备接收用户设备 2的上行信号的准确性降低。 发明内容
本发明实施例提供一种 D2D通信中发射功率的控制方法及设备, 以提高 网络设备接收上行信号的准确性。
第一方面,提供一种设备到设备 D2D通信中发射功率的控制方法, 包括: 确定控制信息, 所述控制信息包括第一子帧信息和在第一子帧信息对应 的第一子帧上进行功率控制的第一功率控制方式, 以及第二子帧信息和在第 二子帧信息对应的第二子帧上进行功率控制的第二功率控制方式;
下发所述控制信息, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上使用根据所述第一功率控制方式确定的发射功率发射 D2D信 号, 且在与所述第二子帧信息对应的第二子帧上使用根据所述第二功率控制 方式确定的发射功率发射 D2D信号。
结合第一方面, 在第一种实现方式中, 确定控制信息, 包括:
确定第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率 控制的第一功率控制参数, 以及第二子帧信息和在与所述第二子帧信息对应 的第二子帧上进行功率控制的第二功率控制参数, 其中, 所述第一功率控制 参数的数值和所述第二功率控制参数的数值不同;
下发所述控制信息, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制方式确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制方式确定的发射功率发射 D2D信号, 包括: 下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述第二功率控制参数, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制参数确定的发射功率发射 D2D信号。
结合第一方面, 在第二种实现方式中, 确定控制信息, 包括:
确定第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率 控制的第一功率控制参数, 以及第二子帧信息和指示在与所述第二子帧信息 对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率发射 D2D信 号的指示信息;
下发所述控制信息, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制方式确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制方式确定的发射功率发射 D2D信号, 包括:
下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述指示信息, 以使 D2D通信的用户设备在与所述第一子帧信息对应的第一 子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D信号, 且 在与所述第二子帧信息对应的第二子帧上, 使用所述 D2D通信的用户设备支 持的最大发射功率发射 D2D信号。
结合第一方面的第一种实现方式或第一方面的第二种实现方式, 功率控 制参数, 包括:
路径损耗补偿系数和网络设备接收上行信号的目标接收功率; 或者 路径损耗补偿系数、 功率偏置量和网络设备接收上行信号的目标接收功 率。
第二方面,提供一种设备到设备 D2D通信中发射功率的控制方法, 包括: 获取网络设备下发的控制信息, 所述控制信息包括第一子帧信息和在第 一子帧信息对应的第一子帧上进行功率控制的第一功率控制方式, 以及第二 子帧信息和在第二子帧信息对应的第二子帧上进行功率控制的第二功率控制 方式;
根据所述控制信息, 在与所述第一子帧信息对应的第一子帧上使用根据 所述第一功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧 信息对应的第二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号。
结合第二方面, 在第一种实现方式中, 获取网络设备下发的控制信息, 包括:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和在与所述第 二子帧信息对应的第二子帧进行功率控制的第二功率控制参数, 其中, 所述 第一功率控制参数的数值和所述第二功率控制参数的数值不同;
根据所述控制信息, 在与所述第一子帧信息对应的第一子帧上使用根据 所述第一功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧 信息对应的第二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号, 包括:
根据所述第一子帧信息和所述第一功率控制参数, 在与所述第一子帧信 息对应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率, 发 射 D2D信号; 以及
根据所述第二子帧信息和所述第二功率控制参数, 在与所述第二子帧信 息对应的第二子帧上, 使用根据所述第二功率控制参数确定的发射功率, 发 射 D2D信号。
结合第二方面, 在第二种实现方式中, 获取网络设备下发的控制信息, 包括:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在与所 述第二子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射 功率发射 D2D信号的指示信息;
根据所述控制信息, 在与所述第一子帧信息对应的第一子帧上使用根据 所述第一功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧 信息对应的第二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号, 包括:
根据所述第一子帧信息和所述第一功率控制参数, 在与所述第一子帧信 息对应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D信号; 以及
根据所述第二子帧信息和所述指示信息, 在与所述第二子帧信息对应的 第二子帧上, 使用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
结合第二方面的第一种实现方式或者第二方面的第二种实现方式, 在第 三种实现方式中, 根据功率控制参数确定发射功率, 包括:
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 以及网络设备下发的路径损耗补偿系数, 确定发射 D2D信号的发射功 率; 或者
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 网络设备下发的路径损耗补偿系数、 以及网络设备下发的功率偏置量, 确定发射 D2D信号的发射功率。
第三方面, 提供一种网络设备, 该网络设备包括确定单元和下发单元, 其中,
所述确定单元, 用于确定控制信息, 所述控制信息包括第一子帧信息和 在第一子帧信息对应的第一子帧上进行功率控制的第一功率控制方式, 以及 第二子帧信息和在第二子帧信息对应的第二子帧上进行功率控制的第二功率 控制方式;
所述下发单元, 用于下发所述确定单元确定的所述控制信息, 以使 D2D 通信的用户设备在与所述第一子帧信息对应的第一子帧上使用根据所述第一 功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应 的第二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D 信 号。
结合第三方面, 在第一种实现方式中, 所述确定单元具体用于按如下方 式确定控制信息:
确定第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率 控制的第一功率控制参数, 以及第二子帧信息和在与所述第二子帧信息对应 的第二子帧上进行功率控制的第二功率控制参数, 其中, 所述第一功率控制 参数的数值和所述第二功率控制参数的数值不同;
所述下发单元具体用于按如下方式下发所述控制信息, 以使 D2D通信的 用户设备在与所述第一子帧信息对应的第一子帧上, 使用根据所述第一功率 控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第 二子帧上, 使用根据所述第二功率控制方式确定的发射功率发射 D2D信号: 下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述第二功率控制参数, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制参数确定的发射功率发射 D2D信号。
结合第三方面, 在第二种实现方式中, 所述确定单元具体用于按如下方 式确定控制信息:
确定第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率 控制的第一功率控制参数, 以及第二子帧信息和指示在与所述第二子帧信息 对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率发射 D2D信 号的指示信息;
所述下发单元具体用于按如下方式下发所述控制信息, 以使 D2D通信的 用户设备在与所述第一子帧信息对应的第一子帧上, 使用根据所述第一功率 控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第 二子帧上, 使用根据所述第二功率控制方式确定的发射功率发射 D2D信号: 下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述指示信息, 以使 D2D通信的用户设备在与所述第一子帧信息对应的第一 子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D信号, 且 在与所述第二子帧信息对应的第二子帧上, 使用所述 D2D通信的用户设备支 持的最大发射功率发射 D2D信号。
结合第三方面的第一种实现方式或者第三方面的第二种实现方式, 在第 三种实现方式中, 所述确定单元确定的功率控制参数包括:
路径损耗补偿系数和网络设备接收上行信号的目标接收功率; 或者 路径损耗补偿系数、 功率偏置量和网络设备接收上行信号的目标接收功 率。
第四方面, 提供一种用户设备, 该用户设备包括获取单元和发射单元, 其中,
所述获取单元, 用于获取网络设备下发的控制信息, 所述控制信息包括 第一子帧信息和在第一子帧信息对应的第一子帧上进行功率控制的第一功率 控制方式, 以及第二子帧信息和在第二子帧信息对应的第二子帧上进行功率 控制的第二功率控制方式;
所述发射单元, 用于根据所述获取单元获取的控制信息, 在与所述第一 子帧信息对应的第一子帧上使用根据所述第一功率控制方式确定的发射功率 发射 D2D信号, 且在与所述第二子帧信息对应的第二子帧上使用根据所述第 二功率控制方式确定的发射功率发射 D2D信号。
结合第四方面, 在第一种实现方式中, 所述获取单元具体用于按如下方 式获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和在与所述第 二子帧信息对应的第二子帧进行功率控制的第二功率控制参数, 其中, 所述 第一功率控制参数的数值和所述第二功率控制参数的数值不同;
所述发射单元具体用于按如下方式根据所述控制信息, 在与所述第一子 帧信息对应的第一子帧上使用根据所述第一功率控制方式确定的发射功率发 射 D2D信号, 且在与所述第二子帧信息对应的第二子帧上使用根据所述第二 功率控制方式确定的发射功率发射 D2D信号:
根据所述第一子帧信息和所述第一功率控制参数, 在与所述第一子帧信 息对应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率, 发 射 D2D信号; 以及
根据所述第二子帧信息和所述第二功率控制参数, 在与所述第二子帧信 息对应的第二子帧上, 使用根据所述第二功率控制参数确定的发射功率, 发 射 D2D信号。
结合第四方面, 在第二种实现方式中, 所述获取单元具体用于按如下方 式获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在与所 述第二子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射 功率发射 D2D信号的指示信息;
所述发射单元具体用于按如下方式根据所述控制信息, 在与所述第一子 帧信息对应的第一子帧上使用根据所述第一功率控制方式确定的发射功率发 射 D2D信号, 且在与所述第二子帧信息对应的第二子帧上使用根据所述第二 功率控制方式确定的发射功率发射 D2D信号:
根据所述第一子帧信息和所述第一功率控制参数, 在与所述第一子帧信 息对应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D信号; 以及
根据所述第二子帧信息和所述指示信息, 在与所述第二子帧信息对应的 第二子帧上, 使用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
结合第四方面的第一种实现方式或者第四方面的第二种实现方式, 在第 三种实现方式中, 所述发射单元发射 D2D信号使用的发射功率具体用于按如 下方式确定: 根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 以及网络设备下发的路径损耗补偿系数, 确定发射 D2D信号的发射功 率; 或者
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 网络设备下发的路径损耗补偿系数、 以及网络设备下发的功率偏置量, 确定发射 D2D信号的发射功率。
第五方面, 提供一种通信设备, 该通信设备包括发射器、 处理器、 存储 器和总线, 其中, 所述发射器和所述存储器均通过所述总线与所述处理器相 连接,
所述存储器, 用于存储所述处理器执行的程序代码;
所述处理器, 用于调用所述存储器存储的程序, 确定控制信息, 所述控 制信息包括第一子帧信息和在第一子帧信息对应的第一子帧上进行功率控制 的第一功率控制方式, 以及第二子帧信息和在第二子帧信息对应的第二子帧 上进行功率控制的第二功率控制方式;
所述发射器, 用于下发所述处理器确定的控制信息, 以使 D2D通信的用 户设备在与所述第一子帧信息对应的第一子帧上使用根据所述第一功率控制 方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第二子 帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号。
结合第五方面, 在第一种实现方式中, 所述处理器具体用于按如下方式 确定控制信息: 确定第一子帧信息和在与所述第一子帧信息对应的第一子帧 上进行功率控制的第一功率控制参数, 以及第二子帧信息和在与所述第二子 帧信息对应的第二子帧上进行功率控制的第二功率控制参数, 其中, 所述第 一功率控制参数的数值和所述第二功率控制参数的数值不同;
所述发射器具体用于按如下方式下发所述控制信息, 以使 D2D通信的用 户设备在与所述第一子帧信息对应的第一子帧上, 使用根据所述第一功率控 制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第二 子帧上, 使用根据所述第二功率控制方式确定的发射功率发射 D2D信号: 下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述第二功率控制参数, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制参数确定的发射功率发射 D2D信号。
结合第五方面, 在第二种实现方式中, 所述处理器具体用于按如下方式 确定控制信息: 确定第一子帧信息和在与所述第一子帧信息对应的第一子帧 上进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在与所述第 二子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率 发射 D2D信号的指示信息;
所述发射器具体用于按如下方式下发所述控制信息, 以使 D2D通信的用 户设备在与所述第一子帧信息对应的第一子帧上, 使用根据所述第一功率控 制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第二 子帧上, 使用根据所述第二功率控制方式确定的发射功率发射 D2D信号: 下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述指示信息, 以使 D2D通信的用户设备在与所述第一子帧信息对应的第一 子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D信号, 且 在与所述第二子帧信息对应的第二子帧上, 使用所述 D2D通信的用户设备支 持的最大发射功率发射 D2D信号。
结合第五方面的第一种实现方式或者第五方面的第二种实现方式, 在第 三种实现方式中, 所述处理器确定的功率控制参数包括:
路径损耗补偿系数和网络设备接收上行信号的目标接收功率; 或者 路径损耗补偿系数、 功率偏置量和网络设备接收上行信号的目标接收功 率。
第六方面, 提供一种通信设备, 该通信设备包括接收器、 处理器、 存储 器、 发射器和总线, 其中, 所述接收器、 所述发射器和所述存储器均通过所 述总线与所述处理器相连接, 所述存储器, 用于存储所述处理器执行的程序代码;
所述接收器, 用于获取网络设备下发的控制信息, 所述控制信息包括第 一子帧信息和在第一子帧信息对应的第一子帧上进行功率控制的第一功率控 制方式, 以及第二子帧信息和在第二子帧信息对应的第二子帧上进行功率控 制的第二功率控制方式;
所述处理器, 用于调用所述存储器存储的程序, 并根据所述接收器获取 的控制信息, 控制所述发射器在与所述第一子帧信息对应的第一子帧上使用 根据所述第一功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二 子帧信息对应的第二子帧上使用根据所述第二功率控制方式确定的发射功率 发射 D2D信号。
结合第六方面, 在第一种实现方式中, 所述接收器具体用于按如下方式 获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和在与所述第 二子帧信息对应的第二子帧进行功率控制的第二功率控制参数, 其中, 所述 第一功率控制参数的数值和所述第二功率控制参数的数值不同;
所述处理器具体用于按如下方式根据所述接收器获取的控制信息, 控制 所述发射器在与所述第一子帧信息对应的第一子帧上使用根据所述第一功率 控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第 二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号: 根据所述第一子帧信息和所述第一功率控制参数, 控制所述发射器在与 所述第一子帧信息对应的第一子帧上, 使用根据所述第一功率控制参数确定 的发射功率, 发射 D2D信号; 以及
根据所述第二子帧信息和所述第二功率控制参数, 控制所述发射器在与 所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率控制参数确定 的发射功率, 发射 D2D信号。
结合第六方面, 在第二种实现方式中, 所述接收器具体用于按如下方式 获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在与所 述第二子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射 功率发射 D2D信号的指示信息;
所述处理器具体用于按如下方式根据所述接收器获取的控制信息, 控制 所述发射器在与所述第一子帧信息对应的第一子帧上使用根据所述第一功率 控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第 二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号: 根据所述第一子帧信息和所述第一功率控制参数, 控制所述发射器在与 所述第一子帧信息对应的第一子帧上, 使用根据所述第一功率控制参数确定 的发射功率发射 D2D信号; 以及
根据所述第二子帧信息和所述指示信息, 控制所述发射器在与所述第二 子帧信息对应的第二子帧上, 使用 D2D通信的用户设备支持的最大发射功率 发射 D2D信号。
结合第六方面的第一种实现方式或者第六方面的第二种实现方式, 所述 处理器控制所述发射器发射 D2D信号使用的发射功率,具体按如下方式确定: 根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 以及网络设备下发的路径损耗补偿系数, 确定发射 D2D信号的发射功 率; 或者
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 网络设备下发的路径损耗补偿系数、 以及网络设备下发的功率偏置量, 确定发射 D2D信号的发射功率。
本发明实施例提供的 D2D通信中发射功率的控制方法, 网络设备确定并 下发 D2D通信的用户设备进行功率控制的控制信息, 该控制信息中包括第一 子帧信息和在第一子帧信息对应的第一子帧上进行功率控制的第一功率控制 方式, 以及第二子帧信息和在第二子帧信息对应的第二子帧上进行功率控制 的第二功率控制方式, D2D通信的用户设备接收到网络设备确定并下发的控 制信息, 可在第一子帧和第二子帧上分别釆用不同的功率控制方式确定发射 D2D信号的发射功率,实现对 D2D通信中发射 D2D信号使用的发射功率进行动 态调节控制, 即相对现有技术中 D2D通信的用户设备单纯的以最大发射功率 发射 D2D信号,本发明实施例中 D2D通信的用户设备可根据实际情况灵活控制 D2D通信设备发射 D2D信号时釆用的发射功率,进而可限制 D2D信号对网络设 备接收的上行信号的干扰, 提高网络设备接收上行信号的准确性。 附图说明
图 1所示为现有技术中 D2D通信的 D2D信号与上行通信的上行信号频分复 用示意图;
图 2所示为本发明实施例提供的 D2D通信中发射功率的控制方法应用的 系统架构图;
图 3A所示为本发明实施例一提供的 D2D通信中发射功率的控制方法第一 实现流程图;
图 3B所示为本发明实施例一提供的 D2D通信中发射功率的控制方法第二 实现流程图;
图 3C所示为本发明实施例一提供的 D2D子帧划分以及 D2D子帧对应的功 率控制参数第一示意图;
图 3D所示为本发明实施例一提供的 D2D通信中发射功率的控制方法第三 实现流程图;
图 3E所示为本发明实施例一提供的 D2D子帧划分以及 D2D子帧对应的功 率控制参数第二示意图;
图 4A为本发明实施例二提供的 D2D通信中发射功率的控制方法第一实现 流程图;
图 4B为本发明实施例二提供的 D2D通信中发射功率的控制方法第一实现 流程图; 图 4C为本发明实施例二提供的 D2D通信中发射功率的控制方法第一实现 流程图;
图 5为本发明实施例三提供的网络设备构成示意图;
图 6为本发明实施例四提供的用户设备构成示意图;
图 7为本发明实施例五提供的通信设备构成示意图;
图 8为本发明实施例提供的通信设备构成示意图。 具体实施方式
下面将结合本发明实施例中的附图, 对本发明实施例中的技术方案进行 清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而不是 全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在没有做出创 造性劳动前提下所获得的所有其他改进实施例, 都属于本发明权利要求的保 护范围。
本发明实施例提供的 D2D 通信中发射功率的控制方法及设备, 应用于 D2D通信技术, D2D通信技术可应用于各通信场景中, 例如 LTE、 2G或 3G 等。 进行 D2D通信的过程示意图可参阅图 2, 图 2所示为本发明实施例提供 的 D2D通信中发射功率的控制方法应用的系统架构。 图 2中, 用户设备 1与 网络设备进行通信, 用户设备 1发射上行信号、 网络设备接收用户设备 1发 射的上行信号, 称为上行通信。 用户设备 2和用户设备 3进行的设备到设备 的通信为 D2D通信。 用户设备 1和网络设备之间的上行通信, 以及用户设备 2和用户设备 3之间的 D2D通信可使用相同的频谱资源; 用户设备 2和用户 设备 3进行 D2D通信使用的频谱资源是网络设备分配的。
需要说明的是, 本发明实施例中的网络设备既可以是 LTE系统中的演进 型基站 ( eNB ) , 也可以是通用移动通信系统 ( Universal Mobile Telecommunications System, UMTS ) 中的基站(NB ), 还可以是其他与用户 设备进行通信并为用户设备进行资源调度的网络设备等。
本发明实施例提供一种 D2D通信中发射功率的控制方法, 网络设备确定 并下发 D2D通信的用户设备进行功率控制的控制信息, D2D通信的用户设备 根据网络设备确定并下发的控制信息, 对发射 D2D信号使用的发射功率进行 功率控制, 从而可以限制 D2D信号对网络设备接收的上行信号的干扰, 提高 网络设备接收上行信号的可靠性。 率的控制方法及设备, 进行详细说明。
实施例一
本发明实施例一以第一设备执行本发明实施例提供的 D2D通信中发射功 率的控制方法为例进行说明, 本发明实施例中的第一设备可以是现有通信系 统中与用户设备进行通信并为用户设备进行资源调度的网络设备, 但不局限 于此, 也可以是其它能够执行相应功能的设备。 功率的控制方法为例进行说明, 当然并不引以为限。
图 3A所示为本发明实施例提供的 D2D通信中发射功率的控制方法实现 流程图, 如图 3A所示, 该方法包括:
S101 : 网络设备确定 D2D通信的用户设备进行功率控制的控制信息。 本发明实施例中网络设备确定的控制信息包括第一子帧信息和在第一子 帧信息对应的第一子帧上进行功率控制的第一功率控制方式, 以及第二子帧 信息和在第二子帧信息对应的第二子帧上进行功率控制的第二功率控制方 式。
S102: 网络设备下发 S101中确定的控制信息。
本发明实施例中网络设备可通过信令下发确定的控制信息, 以使 D2D通 信的用户设备根据该控制信息在第一子帧信息对应的第一子帧上使用根据第 一功率控制方式确定的发射功率发射 D2D信号, 且在第二子帧信息对应的第 二子帧上使用根据第二功率控制方式确定的发射功率发射 D2D信号。
本发明实施例提供的 D2D通信中发射功率的控制方法, 网络设备确定并 下发 D2D通信的用户设备进行功率控制的控制信息, 该控制信息中包括第一 子帧信息和在第一子帧信息对应的第一子帧上进行功率控制的第一功率控制 方式, 以及第二子帧信息和在第二子帧信息对应的第二子帧上进行功率控制 的第二功率控制方式, D2D通信的用户设备接收到网络设备确定并下发的控 制信息, 可在第一子帧和第二子帧上分别釆用不同的功率控制方式确定发射 D2D信号的发射功率,实现对 D2D通信中发射 D2D信号使用的发射功率进行动 态调节控制, 即相对现有技术中 D2D通信的用户设备单纯的以最大发射功率 发射 D2D信号,本发明实施例中 D2D通信的用户设备可根据实际情况灵活控制 D2D通信设备发射 D2D信号时釆用的发射功率,进而可限制 D2D信号对网络设 备接收的上行信号的干扰, 提高网络设备接收上行信号的准确性。
本发明实施例中网络设备可根据 D2D通信的用户设备进行功率控制的方 式确定控制信息, 例如本发明实施例中网络设备可确定并下发子帧信息和 D2D 通信的用户设备在子帧信息对应的子帧上进行功率控制的功率控制参 数, 使得 D2D通信的用户设备根据接收到的子帧信息和子帧信息对应的功率 控制参数, 确定发射 D2D信号的发射功率, 进而使用确定的发射功率发射 D2D信号。
功率控制包括开环功率控制和闭环功率控制两种方式, 本发明实施例中 网络设备可根据 D2D通信的用户设备进行功率控制的方式是开环功率控制方 式, 还是闭环功率控制方式, 确定并下发相应的功率控制参数。 例如釆用开 环功率控制方式时, 网络设备可确定诸如网络设备接收上行信号的目标接收 功率和路径损耗补偿系数等功率控制参数; 釆用闭环功率控制方式时, 网络 设备可确定诸如网络设备接收上行信号的目标接收功率、 路径损耗补偿系数 和功率偏置量等功率控制参数。
本发明实施例中网络设备下发的功率控制参数不同, D2D通信的用户设 备确定发射 D2D信号的发射功率的方式也不同。
D2D通信的用户设备确定发射 D2D信号的发射功率的方式一: 网络设备下发诸如网络设备接收上行信号的目标接收功率和路径损耗补 偿系数等功率控制参数时, D2D通信的用户设备可釆用开环功率控制方式, 根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收功率、 以及网络设备下发的路径损耗补偿系数, 按照如下公式(1), 确定发射 D2D 信号的发射功率。
PD2D =p。 +a-PL 公式( J ) 其中, ^ 为 D2D通信设备确定的发射 D2D信号的发射功率, Ρ。是网络 设备接收上行信号的目标接收功率, "e 4567809, 是路径损耗 补偿系数, 是 D2D通信的用户设备计算得到的从网络设备到 D2D通信的 用户设备之间的路径损耗估计( Pathloss Estimate )。 可以是系统发送参考信 号的发送功率与用户设备检测到的参考信号的接收功率之间的差值。
D2D通信的用户设备确定发射 D2D信号的发射功率的方式二:
网络设备下发诸如网络设备接收上行信号的目标接收功率、 路径损耗补 偿系数和功率偏置量等功率控制参数时, D2D通信的用户设备可釆用闭环功 率控制方式, 根据路径损耗估计、 网络设备下发的网络设备接收上行信号的 目标接收功率、 网络设备下发的路径损耗补偿系数以及功率偏置量, 按照如 下公式(2), 确定发射 D2D信号的发射功率。
PD2D=P0+ PL+aP 公式(2)
其中, ^ 为 D2D通信设备确定的发射 D2D信号的发射功率, Ρ。是网络 设备接收上行信号的目标接收功率, "e 4567809, 是路径损耗 补偿系数, 为功率偏置量, 是 D2D通信的用户设备计算得到的从网络 设备到 D2D通信的用户设备之间的路径损耗估计 (Pathloss Estimate )。 PL可 以是系统发送参考信号的发送功率与用户设备检测到的参考信号的接收功率 之间的差值。
本发明实施例中网络设备接收上行信号的目标接收功率 Ρ。、 路径损耗补 偿系数", 以及功率偏置量^ ^, 都是网络设备根据实际通信的情况进行设定 并下发给 D2D通信的用户设备的, 是用户设备通过测量得到的。
本发明实施例以 D2D通信设备釆用开环功率控制方式, 确定 D2D信号的 发射功率为例进行说明。假设网络设备接收上行信号的目标接收功率 Ρ。设置 为 -90dBm, 路径损耗补偿系数《=1 , D2D通信的用户设备测量所得的路径损 耗 是 100dB, 那么 D2D通信的用户设备确定的 D2D信号的发射功率即为: -90dBm+100dB=10dBm。 另外一个例子, 如果 D2D通信的用户设备测量所得 的路径损耗 是 80dB,那么 D2D通信的用户设备确定的 D2D信号的发射功率 即为: -90dBm+80dB=-10dBm。
本发明实施例中网络设备确定并下发 D2D通信的用户设备进行功率控制 的功率控制参数, D2D通信的用户设备根据网络设备确定并下发的功率控制 参数对发射 D2D信号的发射功率进行功率控制。 故, 本发明实施例中 D2D通 信的用户设备可以不以最大发射功率发射 D2D信号, D2D通信的用户设备对 控制参数, 对应不同的发射功率, 实现对 D2D通信中发射 D2D信号的发射功 率进行功率控制, 进而限制 D2D信号对网络设备接收的上行信号的干扰, 例 如, 网络设备可以确定数值较小的功率控制参数, 使得 D2D通信的用户设备 确定的 D2D信号的发射功率相对也较小, 进而可以减小 D2D信号对网络设备 接收的上行信号的干扰, 提高网络设备接收上行信号的可靠性。
本发明实施例中为降低 D2D通信的用户设备发射的 D2D信号对网络设备 接收的上行信号的干扰, D2D通信的用户设备进行功率控制时, 可在部分或 全部子帧上使用功率控制参数确定发射功率并进行功率控制的方式。
本发明实施例中通过对 D2D信号的发射功率进行控制, 相对现有技术中 D2D信号的发射功率为最大发射功率而言, D2D信号的发射功率会减小, 可 以限制 D2D信号对网络设备接收的上行信号的干扰, 但是 D2D信号的发射功 率若减小, 则用户设备进行 D2D通信的作用范围也会随着减小, 影响 D2D信 号的覆盖范围。
较佳的, 本发明实施例提供一种既能减小 D2D信号对网络设备接收的上 行信号的干扰,又能在一定程度上保证 D2D信号的覆盖范围的 D2D发射信号 的发射功率的控制方法。
例如, 本发明实施例中网络设备可确定部分子帧内的功率控制参数数值 相对较小, 使得该部分子帧内的 D2D 信号的发射功率也相对较小, 以减小 D2D信号对网络设备接收的上行信号的干扰; 而确定另一部分子帧内的功率 控制参数数值相对较大, 使得 D2D信号的发射功率也相对较大, 以保证 D2D 信号的覆盖。
本发明的一个较佳实施例, 网络设备可确定用于发射 D2D信号的子帧中 的全部子帧都釆用功率控制的方式进行 D2D信号的发射功率的确定方式。 本 发明实施例中将用于发射 D2D信号的子帧划分为至少两种类别, 且不同类别 的子帧对应的功率控制参数不同, 从而使 D2D通信的用户设备可确定得到不 同的 D2D信号的发射功率。发射 D2D信号时的发射功率相对较小的子帧上的 D2D信号对网络设备接收的上行信号的干扰也较小, 对网络设备接收的上行 信号起到保护作用;发射 D2D信号时的发射功率相对较大的子帧上的 D2D信 号, 可以保证 D2D信号的覆盖。
本发明以下以网络设备确定的控制信息包括第一子帧信息和在第一子帧 信息对应的第一子帧上进行功率控制的第一功率控制参数, 以及第二子帧信 息和在第二子帧信息对应的第二子帧上进行功率控制的第二功率控制参数为 例进行说明, 其中, 第一功率控制参数的数值和第二功率控制参数的数值不 同。
图 3B为本发明实施例提供的又一对 D2D通信中的 D2D信号的发射功率进 行功率控制的方法实现流程图, 如图 3B所示, 该方法包括:
S201 : 网络设备确定第一子帧信息和第二子帧信息。
本发明实施例中第一子帧信息对应的第一子帧和第二子帧信息对应的第 二子帧均使用根据功率控制参数确定的发射功率发射 D2D信号。
S202a:网络设备确定第一子帧信息对应的第一子帧上进行功率控制的第 一功率控制参数。
S202b:网络设备确定第二子帧信息对应的第二子帧上进行功率控制的第 二功率控制参数。
D2D通信系统中的子帧包括用于发射上行信号的用户设备到网络设备之 间的传输子帧, 以及用于发射 D2D信号的 D2D传输子帧。 本发明实施例中, 网络设备将用于发射 D2D信号的 D2D传输子帧, 分为第一子帧和第二子帧, 其中, 第一子帧釆用第一功率控制参数, 对 D2D信号的发射功率进行控制; 第二子帧釆用第二功率控制参数, 对 D2D信号的发射功率进行控制, 如图 3C 所示。
本发明实施例中第一功率控制参数的数值和第二功率控制参数的数值不 同, 进而使得釆用第一子帧发射的 D2D信号的发射功率, 与釆用第二子帧发 射的 D2D信号的发射功率不同, 从而, D2D信号的发射功率相对较小的, 能 够减小 D2D信号对网络设备接收的上行信号的干扰; D2D信号的发射功率相 对较大的, 可以保证 D2D信号的覆盖。
例如, 本发明实施例可确定第一子帧对应的第一功率控制参数中的网络 设备接收上行信号的目标接收功率为 , 路径损耗补偿系数"为 1 , 则 D2D 通信的用户设备确定的釆用第一子帧发射 D2D 信号的发射功率为:
PD2D ^ο,ι + a . PL 本发明实施例可确定第二子帧对应的第二功率控制参数中 的网络设备接收上行信号的目标接收功率为 2 , 路径损耗补偿系数"为 1 , 则 D2D通信的用户设备确定的釆用第二子帧发射 D2D信号的发射功率为: P = P0,2 + " . PL 本发明实施例中网络设备确定 pc < p 2 , 因此, D2D通信的 用户设备使用第一子帧发射 D2D信号的发射功率, 相比较使用第二子帧发射 D2D信号的发射功率而言, D2D信号的发射功率较小, 故可通过第一子帧和 第一功率控制参数对网络设备接收的上行信号进行保护, 降低 D2D信号的干 扰; 而第二子帧和第二功率控制参数可以保证 D2D信号的覆盖。
需要说明的是, 本发明实施例中 S202a和 S202b的执行顺序不分先后。 进一步需要说明的是, 本发明实施例中网络设备具体将哪部分子帧确定 为第一子帧, 哪部分子帧确定为第二子帧可根据实际的通信需要进行确定, 并且确定的子帧的类别数目也并不限于两类, 可以多于两类, 本发明实施例 图 3C所示只是进行示意性说明, 并不引以为限。
S203: 网络设备下发 S201中确定的第一子帧信息、第二子帧信息、 S202a 中确定的第一功率控制参数和 S202b中确定第二功率控制参数, 以使 D2D通 信的用户设备在第一子帧信息对应的第一子帧上, 使用根据第一功率控制参 数确定的发射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上, 使 用第二功率控制参数确定的发射功率发射 D2D信号。
本发明实施例中釆用第一子帧发射 D2D信号的发射功率, 与釆用第二子 帧发射 D2D信号的发射功率不同, 从而, D2D信号的发射功率相对较小的, 能够减小 D2D信号对网络设备接收的上行信号的干扰; D2D信号的发射功率 相对较大的, 可以保证 D2D信号的覆盖。
本发明的另一较佳实施例, 网络设备可确定用于发射 D2D信号的子帧中 的部分子帧釆用根据功率控制参数确定发射功率的功率控制方式, 另一部分 子帧仍以 D2D通信的用户设备支持的最大发射功率作为 D2D信号的发射功率 的功率控制方式。 本发明实施例中 D2D信号的用户设备根据网络设备确定并 下发的子帧信息以及相应的功率控制参数, 确定釆用相应子帧发射 D2D信号 的发射功率。 本发明实施例中在部分子帧上使用进行功率控制的发射功率发 射 D2D信号,减小 D2D信号对网络设备接收的上行信号的干扰,提高网络设 备接收上行信号的可靠性。 在另一部分子帧上使用 D2D通信的用户设备支持 的最大发射功率发射 D2D信号, 可以保证 D2D信号的覆盖。
图 3D为本发明实施例提供的再一对 D2D通信中的 D2D信号的发射功率 进行功率控制的方法实现流程图, 如图 3D所示, 该方法包括:
S301 : 网络设备确定第一子帧信息和第二子帧信息。
本发明实施例中第一子帧信息对应的第一子帧使用根据功率控制参数确 定的发射功率发射 D2D信号, 第二子帧信息对应的第二子帧使用最大发射功 率发射 D2D信号。
S302a:网络设备确定第一子帧信息对应的第以子帧进行功率控制的第一 功率控制参数。
S302b: 网络设备确定指示在第二子帧信息对应的第二子帧上使用 D2D通 信的用户设备支持的最大发射功率发射 D2D信号的指示信息。
需要说明的是, 本发明实施例中 S302a和 S302b的执行顺序不分先后。
S303: 网络设备下发 S301中确定的第一子帧信息和第二子帧信息, S302a 中确定的第一功率控制参数和 S302b中确定的指示信息, 以使 D2D通信的用 户设备在第一子帧信息对应的第一子帧上, 使用根据第一功率控制参数确定 的发射功率发射 D2D信号; 且在第二子帧信息对应的第二子帧上, 使用最大 发射功率发射 D2D信号。
D2D通信系统中的子帧包括用于发射上行信号的用户设备到网络设备之 间的传输子帧, 以及用于发射 D2D信号的 D2D传输子帧。 本发明实施例中, 网络设备将用于发射 D2D信号的 D2D传输子帧, 分为第一子帧和第二子帧, 其中, 第一子帧信息对应的第一子帧使用根据功率控制参数确定的发射功率 发射 D2D信号, 第二子帧信息对应的第二子帧使用最大发射功率发射 D2D信 号, 如图 3E所示。
本发明实施例中釆用第一子帧发射 D2D信号的发射功率, 是根据第一功 率控制参数进行确定的, 而釆用第二子帧发射 D2D信号仍以最大发射功率进 行发射, 进而釆用第一子帧发射 D2D信号的发射功率, 与釆用第二子帧发射 D2D信号的发射功率不同。釆用第一子帧发射 D2D信号的发射功率相对较小, 能够减小 D2D信号对网络设备接收的上行信号的干扰, 提高网络设备接收上 行信号的可靠性。 釆用第二子帧发射 D2D信号的发射功率为最大功率, D2D 信号的发射功率相对较大, 可以保证 D2D信号的覆盖。
需要说明的是, 本发明实施例中网络设备具体将哪部分子帧确定为第一 子帧, 哪部分子帧确定为第二子帧可根据实际的通信需要进行确定, 并且确 定的第一子帧也可进行不同类别的划分, 不同类别的第一子帧对应不同的功 率控制参数, 本发明实施例图 3E所示只是进行示意性说明, 并不引以为限。
本发明实施例中网络设备确定并下发子帧信息、 子帧信息对应的子帧进 行功率控制的功率控制参数以及指示 D2D通信的用户设备釆用最大发射功 率的指示信息, 使得用户设备可在部分子帧上, 根据网络设备确定并下发的 子帧信息和功率控制参数, 确定发射 D2D信号的发射功率; 在另一部分子帧 上直接根据指示信息釆用最大发射功率发射 D2D信号。 本发明实施例中 D2D 通信的用户设备可以不必在全部子帧上都釆用 2D通信的用户设备支持的最 大发射功率发射 D2D信号, D2D通信的用户设备根据功率控制参数确定发射 D2D信号时釆用的发射功率, 可以适应网络设备确定并下发的子帧信息和功 率控制参数, 在部分上使用小于 D2D通信的用户设备支持的最大发射功率的 发射功率发射 D2D信号, 进而限制 D2D信号对网络设备接收的上行信号的干 扰, 提高网络设备接收上行信号的可靠性。 而釆用最大发射功率发射 D2D信 号可以保证 D2D信号的覆盖范围。
实施例二
本发明实施例二以第二设备执行本发明实施例提供的 D2D通信中发射功 率的控制方法为例进行说明, 本发明实施例中第二设备可以是进行 D2D通信 中的用户设备, 当然并不引以为限, 本发明实施例以下仅就 D2D通信中的用 户设备为例进行说明。
图 4A所示为本发明实施例提供的 D2D通信的用户设备执行 D2D通信中 发射功率的控制方法实现流程图, 如图 4A所示, 该方法包括:
S401 : D2D通信的用户设备获取网络设备下发的控制信息。
本发明实施例中 D2D通信的用户设备可通过解析网络设备下发的指令, 获取网络设备下发的控制信息。 本发明实施例中 D2D通信的用户设备获取的 控制信息包括第一子帧信息和在第一子帧信息对应的第一子帧上进行功率控 制的第一功率控制方式, 以及第二子帧信息和在第二子帧信息对应的第二子 帧上进行功率控制的第二功率控制方式。
本发明实施例中 D2D通信的用户设备获取的控制信息可包括子帧信息和 子帧信息对应的子帧上进行功率控制的功率控制参数, D2D通信的用户设备 根据子帧信息和子帧信息对应的功率控制参数, 确定发射 D2D信号的发射功 率, 进而使用确定的发射功率发射 D2D信号。
功率控制参数可包括网络设备根据 D2D通信的用户设备进行功率控制的 方式是开环功率控制方式, 还是闭环功率控制方式, 下发的不同功率控制参 数。 例如: 釆用开环功率控制方式时, D2D通信的用户设备可获取网络设备 确定并下发的、 诸如网络设备接收上行信号的目标接收功率和路径损耗补偿 系数等功率控制参数; 釆用闭环功率控制方式时, D2D通信的用户设备可获 取网络设备确定并下发的、 诸如网络设备接收上行信号的目标接收功率、 路 径损耗补偿系数和功率偏置量等功率控制参数。
S402: D2D通信的用户设备根据 S401中获取的控制信息,在第一子帧信 息对应的第一子帧上使用根据第一功率控制方式确定的发射功率发射 D2D信 号, 且在第二子帧信息对应的第二子帧上使用根据第二功率控制方式确定的 发射功率发射 D2D信号。
本发明实施例中 D2D通信的用户设备可根据网络设备下发的不同控制信 息, 釆用不同的功率控制方式确定的发射功率发射 D2D信号。
本发明实施例中 D2D 通信的用户设备根据功率控制参数确定发射功率 时, 可釆用开环控制方式或者闭环控制方式确定 D2D信号的发射功率, 具体 可釆用如下方式:
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 以及网络设备下发的路径损耗补偿系数, 确定发射功率; 或者
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 网络设备下发的路径损耗补偿系数、 以及网络设备下发的功率偏置量, 确定发射功率。
本发明实施例中根据功率控制参数确定发射功率的过程, 可参考实施例 一中相关的描述方式, 在此不再赘述。
本发明实施例提供的 D2D通信中发射功率的控制方法, D2D通信的用户设 备获取网络设备下发的 D2D通信的用户设备进行功率控制的控制信息, 该控 制信息中包括第一子帧信息和在第一子帧信息对应的第一子帧上进行功率控 制的第一功率控制方式, 以及第二子帧信息和在第二子帧信息对应的第二子 帧上进行功率控制的第二功率控制方式, D2D通信的用户设备可在第一子帧 和第二子帧上分别釆用不同的功率控制方式确定发射 D2D信号的发射功率, 实现对 D2D通信中发射 D2D信号使用的发射功率进行动态调节控制,即相对现 有技术中 D2D通信的用户设备单纯的以最大发射功率发射 D2D信号,本发明实 施例中 D2D通信的用户设备可根据实际情况灵活控制 D2D通信设备发射 D2D 信号时釆用的发射功率, 进而可限制 D2D信号对网络设备接收的上行信号的 干扰, 提高网络设备接收上行信号的准确性。
本发明实施例中 D2D通信的用户设备发射 D2D信号不再是单纯的按照最 大发射功率发射 D2D信号, D2D通信的用户设备对发射 D2D信号的发射功率 可以适应由网络设备进行下发的不同功率控制参数, 对应不同的发射功率, 实现对 D2D通信中发射 D2D信号的发射功率进行功率控制, 进而可以限制 D2D信号对网络设备接收的上行信号的干扰, 但是 D2D信号的发射功率若减 小,则 D2D通信的用户设备进行 D2D通信的作用范围也会随着减小,影响 D2D 信号的覆盖范围。
本发明实施例提供一种既能减小 D2D信号对网络设备接收的上行信号的 干扰,又能在一定程度上保证 D2D信号的覆盖范围的 D2D发射信号的发射功 率的控制方法。
图 4B所示为本发明实施例提供的 D2D通信的用户设备执行 D2D信号的 发射功率的控制方法一个较佳实施例, 如图 4B所示, 该方法包括:
S501 : D2D通信的用户设备获取网络设备下发的第一子帧信息和第二子 帧信息。
本发明实施例中, D2D通信的用户设备确定的用于发射 D2D信号的子帧 包括至少两类子帧, 该至少两类子帧中的每一类子帧进行功率控制时均根据 功率控制参数确定发射功率, D2D通信的用户设备需获取的子帧信息包括第 一子帧信息和第二子帧信息, 第一子帧信息对应的第一子帧和第二子帧信息 对应的第二子帧均使用按照功率控制参数确定的发射功率发射 D2D信号。 S502: D2D通信的用户设备获取网络设备下发的第一子帧信息对应的第 一子帧上进行功率控制的第一功率控制参数, 和在第二子帧信息对应的第二 子帧上进行功率控制的第二功率控制参数, 第一功率控制参数的数值和第二 功率控制参数的数值不同。
S503: 根据第一子帧信息和第一功率控制参数, 在第一子帧信息对应的 第一子帧上, 使用根据第一功率控制参数确定的发射功率, 发射 D2D信号; 以及根据第二子帧信息和第二功率控制参数, 在第二子帧信息对应的第二子 帧上, 使用第二功率控制参数确定的发射功率, 发射 D2D信号。
本发明实施例中在第一子帧信息对应的第一子帧上, 使用根据第一功率 控制参数确定的发射功率, 发射 D2D信号; 在第二子帧信息对应的第二子帧 上, 使用第二功率控制参数确定的发射功率, 发射 D2D信号, 故釆用第一子 帧发射 D2D信号的发射功率,与釆用第二子帧发射 D2D信号的发射功率不同, 从而, D2D信号的发射功率相对较小的, 能够减小 D2D信号对网络设备接收 的上行信号的干扰; D2D信号的发射功率相对较大的, 可以保证 D2D信号的 覆盖。
图 4C所示为本发明实施例提供的 D2D通信的用户设备执行 D2D信号的 发射功率的控制方法又一较佳实施例, 如图 4C所示, 该方法包括:
S601 : D2D通信的用户设备获取网络设备下发的第一子帧信息和第二子 帧信息。
本发明实施例中, 第一子帧信息对应的第一子帧使用根据功率控制参数 确定的发射功率发射 D2D信号,第二子帧信息对应的第二子帧仍以 D2D通信 的用户设备支持的最大发射功率作为 D2D信号的发射功率。
S602a: D2D通信的用户设备获取网络设备下发的第一子帧信息对应的第 一子帧上进行功率控制的第一功率控制参数。
S602b: D2D通信的用户设备获取网络设备下发的第二子帧信息和指示在 第二子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功 率发射 D2D信号的指示信息。 需要说明的是, 本发明实施例中 S602a和 S602b的执行顺序不分先后。 S603a: 根据第一子帧信息和第一功率控制参数, 在第一子帧信息对应的 第一子帧上, 使用根据第一功率控制参数确定的发射功率发射 D2D信号。
S603b: 根据第二子帧信息和指示信息, 在第二子帧信息对应的第二子帧 上, 使用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
本发明实施例中釆用第一子帧发射 D2D信号的发射功率, 是根据第一功 率控制参数进行确定的, 而釆用第二子帧发射 D2D信号仍以最大发射功率进 行发射, 进而釆用第一子帧发射 D2D信号的发射功率, 与釆用第二子帧发射 D2D信号的发射功率不同。釆用第一子帧发射 D2D信号的发射功率相对较小, 能够减小 D2D信号对网络设备接收的上行信号的干扰, 提高网络设备接收上 行信号的可靠性。 釆用第二子帧发射 D2D信号的发射功率为最大功率, D2D 信号的发射功率相对较大, 可以保证 D2D信号的覆盖。
需要说明的是, 本发明实施例一中涉及的 D2D通信的用户设备进行 D2D 信号的发射功率的控制过程, 适用于本发明实施例二提供的进行 D2D信号的 发射功率的控制实现, 故对本发明实施例二描述的不够相近的地方, 可参阅 实施例一及其相关附图的描述。
本发明实施例中 D2D通信的用户设备可以不必在全部子帧上都釆用 2D 通信的用户设备支持的最大发射功率发射 D2D信号, D2D通信的用户设备发 功率控制参数, 在部分或全部子帧上使用根据功率控制参数确定的发射功率 发射 D2D信号, 进而限制 D2D信号对网络设备接收的上行信号的干扰, 提高 网络设备接收上行信号的可靠性。
实施例三
基于上述实施例一提供的 D2D通信中发射功率的的控制方法, 本发明实 施例提供一种网络设备 500, 如图 5所示, 该网络设备包括确定单元 501和下 发单元 502, 其中,
确定单元 501 , 用于确定控制信息,控制信息包括第一子帧信息和在第一 子帧信息对应的第一子帧上进行功率控制的第一功率控制方式, 以及第二子 帧信息和在第二子帧信息对应的第二子帧上进行功率控制的第二功率控制方 式。
下发单元 502, 用于下发确定单元 501确定的控制信息, 以使 D2D通信 的用户设备在第一子帧信息对应的第一子帧上使用根据第一功率控制方式确 定的发射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上使用根据 第二功率控制方式确定的发射功率发射 D2D信号。
结合上述提供的网络设备, 在第一种实现方式中, 确定单元 501 具体用 于按如下方式确定 D2D通信的用户设备进行功率控制的控制信息:
确定第一子帧信息和在第一子帧信息对应的第一子帧上进行功率控制的 第一功率控制参数, 以及第二子帧信息和在第二子帧信息对应的第二子帧上 进行功率控制的第二功率控制参数, 其中, 第一功率控制参数的数值和第二 功率控制参数的数值不同。
下发单元 502, 具体用于按如下方式下发控制信息, 以使 D2D通信的用 户设备在第一子帧信息对应的第一子帧上, 使用根据第一功率控制方式确定 的发射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上, 使用根据 第二功率控制方式确定的发射功率发射 D2D信号:
下发第一子帧信息、 第一功率控制参数、 第二子帧信息和第二功率控制 参数, 以使 D2D通信的用户设备在第一子帧信息对应的第一子帧上, 使用根 据第一功率控制参数确定的发射功率发射 D2D信号, 且在第二子帧信息对应 的第二子帧上, 使用根据第二功率控制参数确定的发射功率发射 D2D信号。
结合上述提供的网络设备, 在第二种实现方式中, 确定单元 501 具体用 于按如下方式确定控制信息: 确定第一子帧信息和在第一子帧信息对应的第 一子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在第 二子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率 发射 D2D信号的指示信息。
下发单元 502具体用于按如下方式下发控制信息, 以使 D2D通信的用户 设备在第一子帧信息对应的第一子帧上, 使用根据第一功率控制方式确定的 发射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上, 使用根据第 二功率控制方式确定的发射功率发射 D2D信号:
下发第一子帧信息、 第一功率控制参数、 第二子帧信息和指示信息, 以 使 D2D通信的用户设备在第一子帧信息对应的第一子帧上, 使用根据第一功 率控制参数确定的发射功率发射 D2D信号, 且在第二子帧信息对应的第二子 帧上, 使用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
结合上述第一种实现方式或第二种实现方式, 在第三种实现方式中, 确 定单元 501确定的功率控制参数包括:
路径损耗补偿系数和网络设备接收上行信号的目标接收功率。 或者 路径损耗补偿系数、 功率偏置量和网络设备接收上行信号的目标接收功 率。
本发明实施例提供的网络设备, 可用来执行实施一及其附图中涉及的 D2D通信的发射功率的控制方法, 故对于本发明实施例提供的网络设备的相 关描述不够详尽的地方, 可参阅对实施一及其附图的相关描述, 在此不再赘 述。
本发明实施例三提供的网络设备,确定并下发 D2D通信的用户设备进行功 率控制的控制信息, 该控制信息中包括第一子帧信息和在第一子帧信息对应 的第一子帧上进行功率控制的第一功率控制方式, 以及第二子帧信息和在第 二子帧信息对应的第二子帧上进行功率控制的第二功率控制方式, D2D通信 的用户设备接收到网络设备确定并下发的控制信息, 可在第一子帧和第二子 帧上分别釆用不同的功率控制方式确定发射 D2D信号的发射功率, 实现对 D2D 通信中发射 D2D信号使用的发射功率进行动态调节控制, 即相对现有技术中 D2D通信的用户设备单纯的以最大发射功率发射 D2D信号, 本发明实施例中 D2D通信的用户设备可根据实际情况灵活控制 D2D通信设备发射 D2D信号时釆 用的发射功率, 进而可限制 D2D信号对网络设备接收的上行信号的干扰, 提 高网络设备接收上行信号的准确性。 实施例四
基于本发明实施例二提供的 D2D通信中发射功率的控制方法, 本发明实 施例提供一种用户设备 600, 如图 6所示, 该用户设备包括获取单元 601和发 射单元 602, 其中,
获取单元 601 , 用于获取网络设备下发的控制信息,控制信息包括第一子 帧信息和在第一子帧信息对应的第一子帧上进行功率控制的第一功率控制方 式, 以及第二子帧信息和在第二子帧信息对应的第二子帧上进行功率控制的 第二功率控制方式。
发射单元 602, 用于根据获取单元 601获取的控制信息, 在第一子帧信息 对应的第一子帧上使用根据第一功率控制方式确定的发射功率发射 D2D 信 号, 且在第二子帧信息对应的第二子帧上使用根据第二功率控制方式确定的 发射功率发射 D2D信号。
结合上述提供的用户设备, 在第一种实现方式中, 获取单元 601 具体用 于按如下方式获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在第一子帧信息对应的第一子帧上 进行功率控制的第一功率控制参数, 以及第二子帧信息和在第二子帧信息对 应的第二子帧进行功率控制的第二功率控制参数, 其中, 第一功率控制参数 的数值和第二功率控制参数的数值不同。
发射单元 602具体用于按如下方式根据控制信息, 在第一子帧信息对应 的第一子帧上使用根据第一功率控制方式确定的发射功率发射 D2D信号, 且 在第二子帧信息对应的第二子帧上使用根据第二功率控制方式确定的发射功 率发射 D2D信号:
根据第一子帧信息和第一功率控制参数, 在第一子帧信息对应的第一子 帧上, 使用根据第一功率控制参数确定的发射功率, 发射 D2D信号; 以及 根据第二子帧信息和第二功率控制参数, 在第二子帧信息对应的第二子 帧上, 使用根据第二功率控制参数确定的发射功率, 发射 D2D信号。
结合上述提供的用户设备, , 在第二种实现方式中, 获取单元 601 具体 用于按如下方式获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在第一子帧信息对应的第一子帧上 进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在第二子帧信 息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率发射 D2D 信号的指示信息。
发射单元 602具体用于按如下方式根据控制信息, 在第一子帧信息对应 的第一子帧上使用根据第一功率控制方式确定的发射功率发射 D2D信号, 且 在第二子帧信息对应的第二子帧上使用根据第二功率控制方式确定的发射功 率发射 D2D信号:
根据第一子帧信息和第一功率控制参数, 在第一子帧信息对应的第一子 帧上, 使用根据第一功率控制参数确定的发射功率发射 D2D信号; 以及
根据第二子帧信息和指示信息, 在第二子帧信息对应的第二子帧上, 使 用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
结合第一种实现方式或者第二种实现方式, 在第三种实现方式中, 发射 单元 602发射 D2D信号使用的发射功率, 具体按如下方式确定:
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 以及网络设备下发的路径损耗补偿系数, 确定发射 D2D信号的发射功 率。 或者
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 网络设备下发的路径损耗补偿系数、 以及网络设备下发的功率偏置量, 确定发射 D2D信号的发射功率。
本发明实施例提供的用户设备, 可用来执行实施二及其附图中涉及的 D2D通信的发射功率的控制方法, 故对于本发明实施例提供的用户设备的相 关描述不够详尽的地方, 可参阅对实施二及其附图的相关描述, 在此不再赘 述。
本发明实施例提供的用户设备, 获取网络设备下发的 D2D通信的用户设 备进行功率控制的控制信息, 该控制信息中包括第一子帧信息和在第一子帧 信息对应的第一子帧上进行功率控制的第一功率控制方式, 以及第二子帧信 息和在第二子帧信息对应的第二子帧上进行功率控制的第二功率控制方式,
D2D通信的用户设备可在第一子帧和第二子帧上分别釆用不同的功率控制方 式确定发射 D2D信号的发射功率,实现对 D2D通信中发射 D2D信号使用的发射 功率进行动态调节控制, 即相对现有技术中 D2D通信的用户设备单纯的以最 大发射功率发射 D2D信号,本发明实施例中 D2D通信的用户设备可根据实际情 况灵活控制 D2D通信设备发射 D2D信号时釆用的发射功率, 进而可限制 D2D 信号对网络设备接收的上行信号的干扰, 提高网络设备接收上行信号的准确 性。
实施例五
基于实施例一提供的 D2D通信中发射功率的控制方法和实施例三提供的 网络设备, 本发明实施例五提供一种通信设备 700, 如图 7所示, 该通信设备 包括发射器 701、 处理器 702、 存储器 703和总线 704, 其中, 发射器 701和存储 器 703均通过总线 704与处理器 702相连接,
存储器 703 , 用于存储处理器 702执行的程序代码。
处理器 702 , 用于调用存储器 703存储的程序, 确定 D2D通信的用户设备 进行功率控制的控制信息, 控制信息包括第一子帧信息和在第一子帧信息对 应的第一子帧上进行功率控制的第一功率控制方式, 以及第二子帧信息和在 第二子帧信息对应的第二子帧上进行功率控制的第二功率控制方式。
发射器 701 , 用于下发处理器 702确定的控制信息, 以使 D2D通信的用户 设备在第一子帧信息对应的第一子帧上使用根据第一功率控制方式确定的发 射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上使用根据第二功 率控制方式确定的发射功率发射 D2D信号。
结合上述提供的通信设备, 在第一种实现方式中, 处理器 702具体用于 按如下方式确定控制信息: 确定第一子帧信息和在第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和在第二子帧 信息对应的第二子帧上进行功率控制的第二功率控制参数, 其中, 第一功率 控制参数的数值和第二功率控制参数的数值不同。
发射器 701具体用于按如下方式下发控制信息, 以使 D2D通信的用户设 备在第一子帧信息对应的第一子帧上, 使用根据第一功率控制方式确定的发 射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上, 使用根据第二 功率控制方式确定的发射功率发射 D2D信号:
下发第一子帧信息、 第一功率控制参数、 第二子帧信息和第二功率控制 参数, 以使 D2D通信的用户设备在第一子帧信息对应的第一子帧上, 使用根 据第一功率控制参数确定的发射功率发射 D2D信号, 且在第二子帧信息对应 的第二子帧上, 使用根据第二功率控制参数确定的发射功率发射 D2D信号。
结合上述提供的通信设备, 在第二种实现方式中, 处理器 702具体用于 按如下方式确定控制信息: 确定第一子帧信息和在第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在第二 子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率发 射 D2D信号的指示信息。
发射器 701具体用于按如下方式下发控制信息, 以使 D2D通信的用户设 备在第一子帧信息对应的第一子帧上, 使用根据第一功率控制方式确定的发 射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上, 使用根据第二 功率控制方式确定的发射功率发射 D2D信号:
下发第一子帧信息、 第一功率控制参数、 第二子帧信息和指示信息, 以 使 D2D通信的用户设备在第一子帧信息对应的第一子帧上, 使用根据第一功 率控制参数确定的发射功率发射 D2D信号, 且在第二子帧信息对应的第二子 帧上, 使用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
结合第一种实现方式或者第二种实现方式, 在第三种实现方式中, 处理 器 702确定的功率控制参数包括:
路径损耗补偿系数和网络设备接收上行信号的目标接收功率。 或者 路径损耗补偿系数、 功率偏置量和网络设备接收上行信号的目标接收功 率。 本发明实施例五提供的通信设备, 可用来执行实施一及其附图中涉及的
D2D通信的发射功率的控制方法, 对于本发明实施例五中对于图 7所示的通信 设备的相关描述不够详尽的地方, 可参阅对实施一及其附图的相关描述, 在 此不再赘述。
本发明实施例中提供的通信设备,确定并下发 D2D通信的用户设备进行功 率控制的控制信息, 该控制信息中包括第一子帧信息和在第一子帧信息对应 的第一子帧上进行功率控制的第一功率控制方式, 以及第二子帧信息和在第 二子帧信息对应的第二子帧上进行功率控制的第二功率控制方式, D2D通信 的用户设备接收到网络设备确定并下发的控制信息, 可在第一子帧和第二子 帧上分别釆用不同的功率控制方式确定发射 D2D信号的发射功率, 实现对 D2D 通信中发射 D2D信号使用的发射功率进行动态调节控制, 即相对现有技术中 D2D通信的用户设备单纯的以最大发射功率发射 D2D信号, 本发明实施例中 D2D通信的用户设备可根据实际情况灵活控制 D2D通信设备发射 D2D信号时釆 用的发射功率, 进而可限制 D2D信号对网络设备接收的上行信号的干扰, 提 高网络设备接收上行信号的准确性。
实施例六
基于实施例二提供的 D2D通信中的发射功率控制方法和实施例四提供的 用户设备, 本发明实施例六提供一种通信设备 800 , 如图 8所示, 该通信设备 包括接收器 801、 处理器 802、 存储器 803、 发射器 804和总线 805 , 其中, 收发器 801、 存储器 803和发射器 804均通过总线 805与处理器 802相连接, 存储器 803 , 用于存储处理器 802执行的程序代码。
接收器 801 , 用于获取网络设备下发的控制信息,控制信息包括第一子帧 信息和在第一子帧信息对应的第一子帧上进行功率控制的第一功率控制方 式, 以及第二子帧信息和在第二子帧信息对应的第二子帧上进行功率控制的 第二功率控制方式。
处理器 802, 用于调用存储器 803存储的程序, 并根据接收器 801获取的 控制信息, 控制发射器 804在第一子帧信息对应的第一子帧上使用根据第一 功率控制方式确定的发射功率发射 D2D信号, 且在第二子帧信息对应的第二 子帧上使用根据第二功率控制方式确定的发射功率发射 D2D信号。
结合上述提供的通信设备, 在第一种实现方式中, 接收器 801 具体用于 按如下方式获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在第一子帧信息对应的第一子帧上 进行功率控制的第一功率控制参数, 以及第二子帧信息和在第二子帧信息对 应的第二子帧进行功率控制的第二功率控制参数, 其中, 第一功率控制参数 的数值和第二功率控制参数的数值不同。
处理器 802具体用于按如下方式根据接收器 801获取的控制信息, 控制 发射器 804在第一子帧信息对应的第一子帧上使用根据第一功率控制方式确 定的发射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上使用根据 第二功率控制方式确定的发射功率发射 D2D信号:
根据第一子帧信息和第一功率控制参数, 控制发射器 804在第一子帧信 息对应的第一子帧上,使用根据第一功率控制参数确定的发射功率,发射 D2D 信号; 以及
根据第二子帧信息和第二功率控制参数, 控制发射器 804在第二子帧信 息对应的第二子帧上,使用根据第二功率控制参数确定的发射功率,发射 D2D 信号。
结合上述提供的通信设备, 在第二种实现方式中, 接收器 801 具体用于 按如下方式获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在第一子帧信息对应的第一子帧上 进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在第二子帧信 息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率发射 D2D 信号的指示信息;
处理器 802具体用于按如下方式根据接收器 801获取的控制信息, 控制 发射器 804在第一子帧信息对应的第一子帧上使用根据第一功率控制方式确 定的发射功率发射 D2D信号, 且在第二子帧信息对应的第二子帧上使用根据 第二功率控制方式确定的发射功率发射 D2D信号:
根据第一子帧信息和第一功率控制参数, 控制发射器 804在第一子帧信 息对应的第一子帧上, 使用根据第一功率控制参数确定的发射功率发射 D2D 信号; 以及
根据第二子帧信息和指示信息, 控制发射器 804在第二子帧信息对应的 第二子帧上, 使用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
结合第一种实现方式或者第二种实现方式, 在第三种实现方式中, 处理 器 802控制发射器 804发射 D2D信号使用的发射功率,具体按如下方式确定: 根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 以及网络设备下发的路径损耗补偿系数, 确定发射 D2D信号的发射功 率。 或者
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 网络设备下发的路径损耗补偿系数、 以及网络设备下发的功率偏置量, 确定发射 D2D信号的发射功率。
本发明实施例六提供的通信设备, 可用来执行实施二及其附图中涉及的 D2D通信的发射功率的控制方法, 对于本发明实施例六中对于图 8所示的通信 设备的相关描述不够详尽的地方, 可参阅对实施二及其附图的相关描述, 在 此不再赘述。
本发明实施例提供的通信设备,获取网络设备下发的 D2D通信的用户设备 进行功率控制的控制信息, 该控制信息中包括第一子帧信息和在第一子帧信 息对应的第一子帧上进行功率控制的第一功率控制方式, 以及第二子帧信息 和在第二子帧信息对应的第二子帧上进行功率控制的第二功率控制方式, D2D通信的用户设备可在第一子帧和第二子帧上分别釆用不同的功率控制方 式确定发射 D2D信号的发射功率, 实现对 D2D通信中发射 D2D信号使用的发射 功率进行动态调节控制, 即相对现有技术中 D2D通信的用户设备单纯的以最 大发射功率发射 D2D信号, 本发明实施例中 D2D通信的用户设备可根据实际情 况灵活控制 D2D通信设备发射 D2D信号时釆用的发射功率, 进而可限制 D2D信 号对网络设备接收的上行信号的干扰, 提高网络设备接收上行信号的准确 性。
本领域内的技术人员应明白, 本发明的实施例可提供为方法、 系统、 或 计算机程序产品。 因此, 本发明可釆用完全硬件实施例、 完全软件实施例、 或结合软件和硬件方面的实施例的形式。 而且, 本发明可釆用在一个或多个 其中包含有计算机可用程序代码的计算机可用存储介质 (包括但不限于磁盘 存储器、 CD-ROM、 光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、 设备(系统)、 和计算机程序产 品的流程图和 /或方框图来描述的。 应理解可由计算机程序指令实现流程图 和 /或方框图中的每一流程和 /或方框、 以及流程图和 /或方框图中的流程 和 /或方框的结合。 可提供这些计算机程序指令到通用计算机、 专用计算机、 嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器, 使得通 过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流 程图一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的 装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设 备以特定方式工作的计算机可读存储器中, 使得存储在该计算机可读存储器 中的指令产生包括指令装置的制造品, 该指令装置实现在流程图一个流程或 多个流程和 /或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上, 使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的 处理, 从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图 一个流程或多个流程和 /或方框图一个方框或多个方框中指定的功能的步 骤。
尽管已描述了本发明的优选实施例, 但本领域内的技术人员一旦得知了 基本创造性概念, 则可对这些实施例作出另外的变更和修改。 所以, 所附权 利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。 脱离本发明实施例的精神和范围。 这样, 倘若本发明实施例的这些修改和变 型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些 改动和变型在内。

Claims

权 利 要 求
1、 一种设备到设备 D2D通信中发射功率的控制方法, 其特征在于, 包 括:
确定控制信息, 所述控制信息包括第一子帧信息和在与所述第一子帧信 息对应的第一子帧上进行功率控制的第一功率控制方式, 以及第二子帧信息 和在与所述第二子帧信息对应的第二子帧上进行功率控制的第二功率控制方 式;
下发所述控制信息, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上使用根据所述第一功率控制方式确定的发射功率发射 D2D信 号, 且在与所述第二子帧信息对应的第二子帧上使用根据所述第二功率控制 方式确定的发射功率发射 D2D信号。
2、 如权利要求 1所述的方法, 其特征在于, 确定控制信息, 包括: 确定第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率 控制的第一功率控制参数, 以及第二子帧信息和在与所述第二子帧信息对应 的第二子帧上进行功率控制的第二功率控制参数, 其中, 所述第一功率控制 参数的数值和所述第二功率控制参数的数值不同;
下发所述控制信息, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制方式确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制方式确定的发射功率发射 D2D信号, 包括:
下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述第二功率控制参数, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制参数确定的发射功率发射 D2D信号。
3、 如权利要求 1所述的方法, 其特征在于, 确定控制信息, 包括: 确定第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率 控制的第一功率控制参数, 以及第二子帧信息和指示在与所述第二子帧信息 对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率发射 D2D信 号的指示信息;
下发所述控制信息, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制方式确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制方式确定的发射功率发射 D2D信号, 包括:
下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述指示信息, 以使 D2D通信的用户设备在与所述第一子帧信息对应的第一 子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D信号, 且 在所述第二子帧信息对应的第二子帧上, 使用所述 D2D通信的用户设备支持 的最大发射功率发射 D2D信号。
4、 如权利要求 2或 3所述的方法, 其特征在于, 功率控制参数, 包括: 路径损耗补偿系数和网络设备接收上行信号的目标接收功率; 或者 路径损耗补偿系数、 功率偏置量和网络设备接收上行信号的目标接收功 率。
5、 一种设备到设备 D2D通信中发射功率的控制方法, 其特征在于, 包 括:
获取网络设备下发的控制信息, 所述控制信息包括第一子帧信息和在与 所述第一子帧信息对应的第一子帧上进行功率控制的第一功率控制方式, 以 及第二子帧信息和在与所述第二子帧信息对应的第二子帧上进行功率控制的 第二功率控制方式;
根据所述控制信息, 在与所述第一子帧信息对应的第一子帧上使用根据 所述第一功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧 信息对应的第二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号。
6、 如权利要求 5所述的方法, 其特征在于, 获取网络设备下发的控制信 息, 包括:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和在与所述第 二子帧信息对应的第二子帧进行功率控制的第二功率控制参数, 其中, 所述 第一功率控制参数的数值和所述第二功率控制参数的数值不同;
根据所述控制信息, 在与所述第一子帧信息对应的第一子帧上使用根据 所述第一功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧 信息对应的第二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号, 包括:
根据所述第一子帧信息和所述第一功率控制参数, 在与所述第一子帧信 息对应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率, 发 射 D2D信号; 以及
根据所述第二子帧信息和所述第二功率控制参数, 在与所述第二子帧信 息对应的第二子帧上, 使用根据所述第二功率控制参数确定的发射功率, 发 射 D2D信号。
7、 如权利要求 5所述的方法, 其特征在于, 获取网络设备下发的控制信 息, 包括:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在与所 述第二子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射 功率发射 D2D信号的指示信息;
根据所述控制信息, 在与所述第一子帧信息对应的第一子帧上使用根据 所述第一功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧 信息对应的第二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D信号, 包括:
根据所述第一子帧信息和所述第一功率控制参数, 在与所述第一子帧信 息对应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射
D2D信号; 以及
根据所述第二子帧信息和所述指示信息, 在所述第二子帧信息对应的第 二子帧上, 使用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
8、 如权利要求 6或 7所述的方法, 其特征在于, 根据功率控制参数确定 发射功率, 包括:
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 以及网络设备下发的路径损耗补偿系数, 确定发射功率; 或者
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 网络设备下发的路径损耗补偿系数、 以及网络设备下发的功率偏置量, 确定发射功率。
9、 一种网络设备, 其特征在于, 该网络设备包括确定单元和下发单元, 其中,
所述确定单元, 用于确定控制信息, 所述控制信息包括第一子帧信息和 在与所述第一子帧信息对应的第一子帧上进行功率控制的第一功率控制方 式, 以及第二子帧信息和在与所述第二子帧信息对应的第二子帧上进行功率 控制的第二功率控制方式;
所述下发单元, 用于下发所述确定单元确定的所述控制信息, 以使 D2D 通信的用户设备在与所述第一子帧信息对应的第一子帧上使用根据所述第一 功率控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应 的第二子帧上使用根据所述第二功率控制方式确定的发射功率发射 D2D 信 号。
10、 如权利要求 9 所述的网络设备, 其特征在于, 所述确定单元具体用 于按如下方式确定控制信息:
确定第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率 控制的第一功率控制参数, 以及第二子帧信息和在与所述第二子帧信息对应 的第二子帧上进行功率控制的第二功率控制参数, 其中, 所述第一功率控制 参数的数值和所述第二功率控制参数的数值不同;
所述下发单元具体用于按如下方式下发所述控制信息, 以使 D2D通信的 用户设备在与所述第一子帧信息对应的第一子帧上, 使用根据所述第一功率 控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第 二子帧上, 使用根据所述第二功率控制方式确定的发射功率发射 D2D信号: 下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述第二功率控制参数, 以使 D2D通信的用户设备在与所述第一子帧信息对 应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D 信号, 且在与所述第二子帧信息对应的第二子帧上, 使用根据所述第二功率 控制参数确定的发射功率发射 D2D信号。
11、 如权利要求 9 所述的网络设备, 其特征在于, 所述确定单元具体用 于按如下方式确定控制信息:
确定第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率 控制的第一功率控制参数, 以及第二子帧信息和指示在与所述第二子帧信息 对应的第二子帧上使用 D2D通信的用户设备支持的最大发射功率发射 D2D信 号的指示信息;
所述下发单元具体用于按如下方式下发所述控制信息, 以使 D2D通信的 用户设备在与所述第一子帧信息对应的第一子帧上, 使用根据所述第一功率 控制方式确定的发射功率发射 D2D信号, 且在与所述第二子帧信息对应的第 二子帧上, 使用根据所述第二功率控制方式确定的发射功率发射 D2D信号: 下发所述第一子帧信息、 所述第一功率控制参数、 所述第二子帧信息和 所述指示信息, 以使 D2D通信的用户设备在与所述第一子帧信息对应的第一 子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D信号, 且 在与所述第二子帧信息对应的第二子帧上, 使用所述 D2D通信的用户设备支 持的最大发射功率发射 D2D信号。
12、 如权利要求 10或 11所述的网络设备, 其特征在于, 所述确定单元 确定的功率控制参数包括: 路径损耗补偿系数和网络设备接收上行信号的目标接收功率; 或者 路径损耗补偿系数、 功率偏置量和网络设备接收上行信号的目标接收功 率。
13、 一种用户设备, 其特征在于, 该用户设备包括获取单元和发射单元, 其中,
所述获取单元, 用于获取网络设备下发的控制信息, 所述控制信息包括 第一子帧信息和在与所述第一子帧信息对应的第一子帧上进行功率控制的第 一功率控制方式, 以及第二子帧信息和在与所述第二子帧信息对应的第二子 帧上进行功率控制的第二功率控制方式;
所述发射单元, 用于根据所述获取单元获取的控制信息, 在与所述第一 子帧信息对应的第一子帧上使用根据所述第一功率控制方式确定的发射功率 发射 D2D信号, 且在与所述第二子帧信息对应的第二子帧上使用根据所述第 二功率控制方式确定的发射功率发射 D2D信号。
14、 如权利要求 13所述的用户设备, 其特征在于, 所述获取单元具体用 于按如下方式获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和在与所述第 二子帧信息对应的第二子帧进行功率控制的第二功率控制参数, 其中, 所述 第一功率控制参数的数值和所述第二功率控制参数的数值不同;
所述发射单元具体用于按如下方式根据所述控制信息, 在与所述第一子 帧信息对应的第一子帧上使用根据所述第一功率控制方式确定的发射功率发 射 D2D信号, 且在与所述第二子帧信息对应的第二子帧上使用根据所述第二 功率控制方式确定的发射功率发射 D2D信号:
根据所述第一子帧信息和所述第一功率控制参数, 在与所述第一子帧信 息对应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率, 发 射 D2D信号; 以及
根据所述第二子帧信息和所述第二功率控制参数, 在与所述第二子帧信 息对应的第二子帧上, 使用根据所述第二功率控制参数确定的发射功率, 发 射 D2D信号。
15、 如权利要求 13所述的用户设备, 其特征在于, 所述获取单元具体用 于按如下方式获取网络设备下发的控制信息:
获取网络设备下发的第一子帧信息和在与所述第一子帧信息对应的第一 子帧上进行功率控制的第一功率控制参数, 以及第二子帧信息和指示在与所 述第二子帧信息对应的第二子帧上使用 D2D通信的用户设备支持的最大发射 功率发射 D2D信号的指示信息;
所述发射单元具体用于按如下方式根据所述控制信息, 在与所述第一子 帧信息对应的第一子帧上使用根据所述第一功率控制方式确定的发射功率发 射 D2D信号, 且在与所述第二子帧信息对应的第二子帧上使用根据所述第二 功率控制方式确定的发射功率发射 D2D信号:
根据所述第一子帧信息和所述第一功率控制参数, 在与所述第一子帧信 息对应的第一子帧上, 使用根据所述第一功率控制参数确定的发射功率发射 D2D信号; 以及
根据所述第二子帧信息和所述指示信息, 在与所述第二子帧信息对应的 第二子帧上, 使用 D2D通信的用户设备支持的最大发射功率发射 D2D信号。
16、 如权利要求 14或 15所述的用户设备, 其特征在于, 所述发射单元 发射 D2D信号使用的发射功率具体按如下方式确定:
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 以及网络设备下发的路径损耗补偿系数, 确定发射 D2D信号的发射功 率; 或者
根据路径损耗估计、 网络设备下发的网络设备接收上行信号的目标接收 功率、 网络设备下发的路径损耗补偿系数、 以及网络设备下发的功率偏置量, 确定发射 D2D信号的发射功率。
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