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WO2018053808A1 - 功率控制方法、装置以及通信系统 - Google Patents

功率控制方法、装置以及通信系统 Download PDF

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Publication number
WO2018053808A1
WO2018053808A1 PCT/CN2016/099877 CN2016099877W WO2018053808A1 WO 2018053808 A1 WO2018053808 A1 WO 2018053808A1 CN 2016099877 W CN2016099877 W CN 2016099877W WO 2018053808 A1 WO2018053808 A1 WO 2018053808A1
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WO
WIPO (PCT)
Prior art keywords
information
terminal
power
transmit power
base station
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2016/099877
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English (en)
French (fr)
Inventor
吴联海
周华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to PCT/CN2016/099877 priority Critical patent/WO2018053808A1/zh
Priority to CN201680088633.XA priority patent/CN109644410B/zh
Publication of WO2018053808A1 publication Critical patent/WO2018053808A1/zh
Priority to US16/299,705 priority patent/US11330532B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/247—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/38—TPC being performed in particular situations
    • H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss

Definitions

  • the present invention relates to the field of communications, and in particular, to a power control method, apparatus, and communication system.
  • V2X (Vehicle-to-Everything) communication includes V2V (Vehicle-to-Vehicle) communication, V2I (Vehicle-to-Infrastructure) communication, and V2P (Vehicle-to) -Pedestrian, vehicle-to-Pedestrian) communication three types.
  • Figure 1 is a schematic diagram of the scenarios of these three types of communication methods.
  • P2V-related information can be transmitted after being authorized by the E-UTRAN (Evolved UMTS Terrestrial Radio Access Network).
  • the P2V information may include information such as location, terminal attributes, and the like.
  • the size of the P2V information should also be variable.
  • the transmission of P2V information can be carried out in the form of direct transmission, that is, without any infrastructure, or by means of infrastructure such as RSU (Road Side Unit).
  • Sidelink communication is a form of direct transmission.
  • the sidelink communication mode means that the data packet does not need to pass through the core network and the base station, and the communication link is directly established between UE1 (User Equipment 1) and UE2 (User Equipment 2) for communication.
  • the discovery process is generally performed before the side link communication is performed. For example, before UE2 sends information to UE1 through side-link communication, it is first found whether UE1 is nearby.
  • FIG. 2 is a schematic diagram showing the discovery or establishment of side link communication of two UEs (UE1 and UE2) under the coverage of the base station.
  • FIG. 3 is a schematic diagram of discovery or establishment of side link communication of a UE (UE1) under the coverage of a base station and another UE (UE2) not under the coverage of the base station.
  • FIG. 4 is a schematic diagram of discovery or establishment of side link communication of UEs in which two UEs (UE1 and UE2) are not covered by a base station.
  • the resource pool is configured before the terminal performs edge link transmission.
  • the SA (Scheduling Assignment) resource pool in the resource pool is used to transmit a PSCCH (Physical Sidelink Control Channel).
  • the PSCCH carries the SCI (Sidelink Control Information) format 0 information.
  • SCI format 0 information is repeatedly sent twice in two different subframes in the SA resource pool, as shown in FIG.
  • the inventor has found that for the P2V scenario, if only the direct transmission mode is available, when the application layer triggers the AS (Access Stratum) to send P2V information, the terminal chooses to use the direct transmission method to send P2V information.
  • the AS Access Stratum
  • the terminal chooses to use the direct transmission method to send P2V information.
  • the AS selects the transmit power, it will set the transmit power according to the configuration of the base station.
  • the receiving end of the P2V information will be at a different distance from the transmitting end.
  • the sender should use different transmit power.
  • neither the base station nor the AS of the terminal knows the information, and it is impossible to configure an appropriate transmission power to transmit the P2V information.
  • embodiments of the present invention provide a power control method, apparatus, and communication system.
  • a power control method is provided, the method being applied to a terminal, wherein the method includes:
  • a power control method is provided, the method being applied to a base station, wherein the method includes:
  • a power control apparatus configured in a terminal, wherein the apparatus comprises:
  • An acquiring unit when the terminal is triggered to send side link information, acquiring transmit power auxiliary information
  • a determining unit that determines a transmit power of the side link information according to the transmit power assistance information.
  • a power control apparatus configured in a base station, wherein the apparatus comprises:
  • a receiving unit which receives transmission power assistance information sent by the terminal
  • a setting unit that selects or adjusts a transmission power parameter with reference to the transmission power assistance information
  • a sending unit configured to send the sending power parameter to the terminal, so that the terminal calculates the sending power of the side link information according to the sending power parameter and the corresponding sending power calculation formula.
  • a terminal wherein the terminal comprises the apparatus of the aforementioned third aspect.
  • a base station wherein the base station comprises the apparatus of the aforementioned fourth aspect.
  • a communication system comprising a base station and a terminal, the terminal having the apparatus of the foregoing third aspect, the base station having the apparatus of the foregoing fourth aspect .
  • the application layer that utilizes the terminal can understand the characteristics of the distance between the receiving end and the transmitting end according to the positioning system and/or the map, and provide information related to the power setting to the access layer of the terminal. Therefore, the terminal or the base station can be instructed to set an appropriate transmission power.
  • FIG. 1 is a schematic diagram of a scenario of V2X
  • FIG. 2 is a schematic diagram of a scenario of side link communication
  • FIG. 3 is a schematic diagram of another scenario of side link communication
  • 5 is a schematic diagram of a resource pool for direct communication of side links
  • FIG. 6 is a schematic diagram of a power control method of Embodiment 1;
  • FIG. 7 is a schematic diagram of a power control method of Embodiment 2.
  • Figure 8 is a schematic diagram of a power control device of Embodiment 3.
  • FIG. 9 is a schematic diagram of an embodiment of a determining unit in the power control device of Embodiment 3.
  • Figure 10 is a schematic diagram of another embodiment of a determining unit in the power control device of Embodiment 3;
  • Figure 11 is a schematic diagram of still another embodiment of the determining unit in the power control device of Embodiment 3;
  • Figure 12 is a schematic diagram of a terminal of Embodiment 3.
  • Figure 13 is a schematic diagram of a power control device of Embodiment 4.
  • Figure 14 is a schematic diagram of a base station of Embodiment 4.
  • Figure 15 is a schematic diagram of a communication system of the fifth embodiment.
  • a base station may be referred to as an access point, a broadcast transmitter, a Node B, an evolved Node B (eNB), etc., and may include some or all of their functions.
  • the term "base station” will be used herein. Each base station provides communication coverage for a particular geographic area.
  • a terminal or device may be referred to as a "user device.”
  • a UE may be fixed or mobile and may also be referred to as a mobile station, mobile station, access terminal, subscriber unit, station, and the like.
  • the UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, a car, and the like.
  • PDA personal digital assistant
  • the terminal may use the DCI (Downlink Control Information, downlink) sent by the base station.
  • the value of the TPC command (Transmitter Power Control Command) in the control information) determines the transmission power of the PSCCH. For example, if the TPC command in the DCI is 0, the terminal can determine the transmit power of its PSCCH according to formula (1); if the TPC command in the DCI is 1, the terminal can determine the transmit power of its PSCCH according to formula (2).
  • the terminal may determine the transmit power of the PSCCH according to formula (3). .
  • P PSCCH min ⁇ P CMAX,PSCCH ,10log 10 (M PSCCH )+P 0_PSCCH,1 + ⁇ PSCCH,1 ⁇ PL ⁇ [dBm] (2)
  • P PSCCH min ⁇ P CMAX,PSCCH ,10log 10 (M PSCCH )+P 0_PSCCH,2 + ⁇ PSCCH,2 ⁇ PL ⁇ [dBm] (3)
  • P CMAX, PSCCH is the transmit power on the PSCCH configured by the upper layer.
  • the specific meaning can refer to 3GPP 36.101
  • the M PSCCH is the bandwidth of the PSCCH
  • M PSCCH 1
  • PL PL c
  • PL c is The downlink path loss estimation value of the terminal to the c serving cell
  • P 0_PSCCH, and 1 is the P 0 value (power parameter) of the PSCCH configured by the upper layer to the mode1 mode
  • ⁇ PSCCH, 1 is the alpha value of the PSCCH configured in the mode1 mode by the upper layer
  • P 0_PSCCH, 2 is configured by the upper layer to the P 0 value (power parameter) of the PSCCH in the mode 2 mode
  • ⁇ PSCCH, 2 is configured by the upper layer to the alpha value of the PSCCH in the mode 2 mode.
  • the terminal can determine the transmission of the PSSCH according to the value of the TPC command in the DCI sent by the base station. power. For example, if the TPC command in the DCI is 0, the terminal can determine the transmit power of its PSSCH according to formula (4); if the TPC command in the DCI is 1, the terminal can determine the transmit power of its PSSCH according to formula (5). If the resource allocation mode is mode2, the terminal can determine the transmit power of its PSSCH according to formula (6).
  • P PSSCH P CMAX,PSSCH (4)
  • P PSSCH min ⁇ P CMAX,PSSCH ,10log 10 (M PSSCH )+P 0_PSSCH,1 + ⁇ PSSCH,1 ⁇ PL ⁇ [dBm] (5)
  • P PSSCH min ⁇ P CMAX,PSSCH ,10log 10 (M PSSCH )+P 0_PSSCH,2 + ⁇ PSSCH,2 ⁇ PL ⁇ [dBm] (6)
  • P CMAX, PSSCH is the transmit power on the PSSCH configured by the upper layer.
  • the specific meaning can refer to 3GPP 36.101
  • the M PSSCH is the bandwidth of the PSSCH
  • PL PL c
  • the PL c is the terminal to the c serving cell.
  • the downlink path loss estimation value can be referred to the 5.1.1.1 of the 3GPP 36.213
  • P 0_PSCCH, 1 is the P 0 value (power parameter) configured by the upper layer to the PSCCH in the mode1 mode, configured by the upper layer
  • ⁇ PSSCH, 1 is The alpha value of the PSSCH in the mode1 mode is configured by the upper layer, and is configured by the upper layer.
  • P 0_PSSCH, 2 is the P 0 value (power parameter) of the PSSCH configured by the upper layer to the mode 2 mode
  • the ⁇ PSSCH is set by the upper layer to the mode 2 mode.
  • FIG. 6 is a schematic diagram of the method. As shown in FIG. 6, the method includes:
  • Step 601 Acquire transmit power auxiliary information when the sending of the side link information is triggered.
  • Step 602 Determine, according to the transmit power auxiliary information, a transmit power of the edge link information.
  • the application layer of the terminal may trigger the access layer to send the side link information, such as the foregoing P2V information.
  • the application layer may also provide the sending power auxiliary information to the access layer according to the location of the receiving end to help the terminal. Or the base station sets the appropriate transmit power.
  • the application layer of the terminal can understand the distance between the receiving end and the transmitting end according to the positioning system and/or the map, when the application layer of the terminal triggers the sending layer sending side link information, the application The layer may also send information related to the power setting to the access layer, so that the access layer or the base station sets the appropriate transmit power with reference to the information.
  • the terminal is, for example, a mobile device held by a pedestrian in the scenario of FIG. 1
  • the receiving end is, for example, a vehicle in the scenario of FIG. 1.
  • the terminal and the receiving end may be UE1 and UE2 in the scenario of FIG. 2 to FIG. 4, respectively. ,and many more.
  • the base station may be a macro base station (for example, an eNB), and the terminal is served by a macro cell (for example, a macro cell) generated by the macro base station.
  • the base station in the embodiment of the present invention may also be a micro base station, and the terminal is configured by the micro base station.
  • the resulting microcells (such as Pico cells) provide services.
  • the embodiment of the present invention is not limited thereto, and a specific scenario may be determined according to actual needs.
  • the sending power auxiliary information may be a receiving end and a transmitting end that receive the side link information.
  • the distance information of the (terminal) may be location information of the receiving end receiving the side link information, or may be power level indication information, such as high power, normal power, low power, and the like.
  • the terminal can transmit the side link information with an appropriate transmission power.
  • the base station may also indicate, by using the broadcast information, which interfaces the terminal can use to send the side link information, for example, the PC5 interface may be used, and for example, a UU interface or the like may be used.
  • the base station may further configure a side link resource pool for the terminal by using broadcast information, so that the terminal selects resources from the resource pool to send side link information.
  • the base station can also configure the transmit power parameter through the broadcast information, as described above, the 1-bit TPC command value (0 or 1) and / or P O_PSCCH, 1 , ⁇ PSCCH, 1 and / or P O_PSSCH, 1 , ⁇ PSSCH, 1 , or P O_PSCCH, 2 , ⁇ PSCCH, 2 and / or P O_PSSCH, 2 , ⁇ PSSCH, 2 and so on.
  • the transmission power parameter can be transmitted through the SL-TxParameters IE in the broadcast information.
  • the terminal after obtaining the foregoing transmit power auxiliary information provided by the application layer, the terminal does not provide the transmit power auxiliary information to the base station, but adjusts the broadcast power auxiliary information. Transmit power.
  • the terminal may first calculate the transmit power of the side link information according to the transmit power parameter configured by the base station and the corresponding transmit power calculation formula (Formula 1-6 as described above), and then refer to the transmit power.
  • the auxiliary information adjusts the transmission power of the side link information.
  • the manner in which the terminal calculates the transmission power of the side link information may refer to the foregoing description, and details are not described herein again.
  • the base station may configure a power adjustment range in advance, and the terminal adjusts the transmission power according to the foregoing transmit power assistance information within the range.
  • the power adjustment range may be 0, that is, no adjustment.
  • the power adjustment range may also be preset, for example, set at the time of shipment. This embodiment is not limited thereto.
  • the terminal may also refer to other factors or adjust according to other strategies.
  • the terminal may provide the transmit power assistance information to the base station through the base station. Adjust the transmit power of the side link information.
  • the terminal may send the transmit power assistance information to the base station, and receive a transmit power parameter (as described above) selected or adjusted by the base station according to the transmit power auxiliary information, and according to the selection. Or the adjusted transmission power parameter and the corresponding transmission power calculation formula (Formula 1-6 as described above) calculate the transmission power of the side link information.
  • the terminal may send the transmit power assistance information to the base station by using the sidelink UEInformation IE, but this embodiment is not limited thereto.
  • the manner in which the terminal calculates the transmission power of the side link information may refer to the foregoing description, and details are not described herein again.
  • the terminal if the base station allocates resources to the terminal through mode1, the terminal sends a sidelink UEInformation IE to request the sidelink resource from the base station. At this time, the terminal can simultaneously send the foregoing transmit power assistance information to the base station through the IE, and the base station can pass the PDCCH.
  • the PSCCH and/or PSSCH resources for the side link information are scheduled, and the transmission power of the PSCCH and the PSSCH is indicated by 1 bit in the DCI.
  • the base station may select or adjust the transmit power parameter as described above according to the transmit power assistance information sent by the terminal, for example, the value of the 1-bit TPC command for the PSCCH and/or the PSSCH of the side link information ( 0 or 1), for example, a transmission power parameter for calculating the transmission power, P 0_PSCCH, 1 , ⁇ PSCCH, 1 and/or P 0_PSSCH, 1 , ⁇ PSSCH, 1 and the like involved in Equation 2, so that The terminal calculates its transmit power according to this parameter and Equations 1 and/or 4, or according to Equations 2 and/or 5.
  • the transmit power assistance information sent by the terminal for example, the value of the 1-bit TPC command for the PSCCH and/or the PSSCH of the side link information ( 0 or 1), for example, a transmission power parameter for calculating the transmission power, P 0_PSCCH, 1 , ⁇ PSCCH, 1 and/or P 0_PSSCH, 1 , ⁇ PSSCH, 1 and the like involved in Equ
  • the base station may adjust the transmit power as described above according to the transmit power assistance information provided by the terminal.
  • a parameter for example, a transmission power parameter for calculating a transmission power, P 0_PSCCH, 2 , ⁇ PSCCH, 2 and/or P 0_PSSCH, 2 , ⁇ PSSCH, 2, etc. involved in Equation 3, so that the terminal according to the parameter And Equation 3 and / or 6 calculate its transmit power.
  • the terminal can adjust the side chain of the transmission power auxiliary information provided by the application layer.
  • the transmission power of the road information since no base station provides the service for the terminal, the terminal can adjust the side chain of the transmission power auxiliary information provided by the application layer. The transmission power of the road information.
  • the terminal may adjust the transmit power of the pre-configured side link information with reference to the transmit power assistance information.
  • the terminal since the terminal has left the coverage of the base station and no longer receives the information sent by the base station, it can adjust the transmission power of the side link information by referring to the foregoing transmit power assistance information.
  • the transmission power of the link information is pre-configured, for example, configured at the factory.
  • the power adjustment range may be preset, for example, set at the time of shipment, whereby the terminal may adjust the transmission power according to the foregoing transmission power assistance information within the range, for example, the power adjustment range may be 0, That is, no adjustment.
  • the rate adjustment mode is not limited by this embodiment.
  • the terminal may also refer to other factors or adjust according to other strategies.
  • the application layer that utilizes the terminal can understand the characteristics of the distance between the receiving end and the transmitting end according to the positioning system and/or the map, and provide information related to the power setting to the access layer of the terminal, thereby The terminal or base station can be instructed to set an appropriate transmit power.
  • the present embodiment provides a power control method, which is applied to a base station. Since the method is a process of the base station corresponding to the method of the first embodiment, the same content as that of the first embodiment is not repeatedly described.
  • FIG. 7 is a schematic diagram of the method of this embodiment. As shown in FIG. 7, the method includes:
  • Step 701 Receive transmission power assistance information sent by the terminal.
  • Step 702 Select or adjust a transmit power parameter by referring to the transmit power auxiliary information.
  • Step 703 Send the transmit power parameter to the terminal, so that the terminal calculates the transmit power of the side link information according to the transmit power parameter and the corresponding transmit power calculation formula.
  • the transmit power assistance information may be distance information of a receiving end and a sending end (the terminal) that receive the side link information; or may be location information of a receiving end that receives the side link information; It can also be a function level indication information, etc., as described above, and will not be described again here.
  • the transmit power parameter is, for example, a 1-bit TPC command value (0 or 1) and/or P O_PSCCH,1 , ⁇ PSCCH,1 and/or P O_PSSCH,1 , ⁇ PSSCH,1 , or P.
  • O_PSCCH, 2 , ⁇ PSCCH, 2 and/or P O_PSSCH, 2 , ⁇ PSSCH, 2, etc., as described above, will not be described herein.
  • the application layer that utilizes the terminal can understand the characteristics of the distance between the receiving end and the transmitting end according to the positioning system and/or the map, and provide information related to the power setting to the access layer of the terminal, by The access layer of the terminal then provides the information to the base station, so that the base station can be instructed to select an appropriate transmission power parameter, thereby helping the terminal to set an appropriate transmission power.
  • the present embodiment provides a power control device, which is configured in a terminal.
  • the principle of solving the problem is similar to the method of the first embodiment. Therefore, the specific implementation may refer to the implementation of the method in the first embodiment. The description will not be repeated.
  • the apparatus 800 includes: an obtaining unit 801 and a determining unit 802, which acquires transmitting power when the terminal is triggered to transmit side link information.
  • the auxiliary information 802 determines the transmission power of the side link information based on the transmission power assistance information.
  • the transmit power assistance information is: distance information of the receiving end and the transmitting end of the side link information; or location information of the receiving end of the side link information; or power level indication information.
  • the obtaining unit 801 obtains the foregoing transmit power assistance information from an application layer of the terminal.
  • the determining unit 802 includes: a first calculating unit 901 and a first adjusting unit 902, where the first calculating unit 901 is configured according to a transmit power parameter of the base station and a corresponding The transmission power calculation formula calculates the transmission power of the edge link information, and the first adjustment unit 902 adjusts the transmission power of the edge link information with reference to the transmission power assistance information according to the power adjustment range configured by the base station.
  • the determining unit 802 includes: a transmitting unit 1001, a receiving unit 1002, and a second calculating unit 1003.
  • the transmitting unit 1001 transmits the transmission power assistance information to the base station;
  • the receiving unit 1002 receives the transmission power parameter selected or adjusted by the base station according to the transmission power assistance information; and the second calculation unit 1003 transmits according to the selected or adjusted transmission.
  • the power parameter and the corresponding transmit power calculation formula calculate the transmit power of the side link information.
  • the determining unit 802 includes: a second adjusting unit 1101, and the second adjusting unit 1101 adjusts with reference to the foregoing transmit power assistance information according to a preset power adjustment range.
  • the transmit power of the pre-configured side link information is not limited to a pre-configured side link information.
  • the terminal or the base station can be instructed to set an appropriate transmission power.
  • This embodiment also provides a terminal configured with the power control device 800 as described above.
  • FIG. 12 is a schematic block diagram showing the system configuration of the terminal 1200 according to the embodiment of the present invention.
  • the terminal 1200 can include a central processor 1201 and a memory 1202; the memory 1202 is coupled to the central processor 1201.
  • the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.
  • the functionality of power control device 800 can be integrated into central processor 1201.
  • the central processing unit 1201 can be configured to implement the power control method described in Embodiment 1.
  • the central processing unit 1201 can be configured to perform the following control: the transmission of the side link information is At the time of triggering, the transmission power assistance information is acquired; and the transmission power of the side link information is determined according to the transmission power assistance information.
  • the power control device 800 can be configured separately from the central processing unit 801.
  • the power control device 800 can be configured as a chip connected to the central processing unit 1201, and the power control device can be implemented by the control of the central processing unit 1201. 800 features.
  • the terminal 1200 may further include: a communication module 1203, an input unit 1204, an audio processing unit 1205, a display 1206, and a power source 1207. It should be noted that the terminal 1200 does not have to include all the components shown in FIG. 12; in addition, the terminal 1200 may further include components not shown in FIG. 12, and reference may be made to the related art.
  • central processor 1201 also sometimes referred to as a controller or operational control, may include a microprocessor or other processor device and/or logic device that receives input and controls various components of terminal 1200. Operation.
  • the memory 1202 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device.
  • the above-described transmission power auxiliary information, transmission power parameter, transmission power calculation formula, and the like may be stored, and a program for executing the related information may be stored.
  • the central processing unit 1201 can execute the program stored by the memory 1202 to implement information storage or processing and the like.
  • the functions of other components are similar to those of the existing ones and will not be described here.
  • the various components of terminal 1200 may be implemented by special purpose hardware, firmware, software or a combination thereof without departing from the scope of the invention.
  • the terminal or the base station can be instructed to set an appropriate transmission power.
  • the present embodiment provides a power control device, which is configured in a base station.
  • the principle of the device is similar to that of the second embodiment. Therefore, the specific implementation may refer to the implementation of the method in the second embodiment. The description will not be repeated.
  • FIG. 13 is a schematic diagram of the power control apparatus of the embodiment.
  • the apparatus 1300 includes: a receiving unit 1301, a setting unit 1302, and a sending unit 1303, where the receiving unit 1301 receives the sending power assistance information sent by the terminal;
  • the setting unit 1302 selects or adjusts the transmission power parameter with reference to the foregoing sending power auxiliary information; the sending unit 1303 sends the foregoing sending power parameter to the terminal, so that the terminal calculates the side link information according to the sending power parameter and the corresponding sending power calculation formula. Transmit power.
  • the transmit power assistance information is: distance information of the receiving end and the transmitting end of the side link information; or location information of the receiving end of the side link information; or power level indication information.
  • the terminal can set an appropriate transmission power.
  • the embodiment further provides a base station configured with the power control device 1300 as described above.
  • FIG. 14 is a schematic diagram showing the structure of a base station according to an embodiment of the present invention.
  • base station 1400 can include a central processing unit (CPU) 1401 and memory 1402; and memory 1402 is coupled to central processing unit 1401.
  • the memory 1402 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 1401 to receive various information transmitted by the user equipment, and send various information to the user equipment. .
  • the functionality of power control device 1300 can be integrated into central processor 1401.
  • the central processing unit 1401 may be configured to implement the power control method described in Embodiment 2.
  • the central processing unit 1401 may be configured to: receive transmission power assistance information sent by the terminal; select or adjust a transmission power parameter by referring to the transmission power assistance information; and send the transmission power parameter to the terminal, so that the terminal according to the The transmission power parameter and the corresponding transmission power calculation formula calculate the transmission power of the side link information.
  • the power control device 1300 may be configured separately from the central processing unit 1401.
  • the power control device 1300 may be configured as a chip connected to the central processing unit 1401, and power control is implemented by the control of the central processing unit 1401. The function of device 1300.
  • the base station 1400 may further include: a transceiver 1403, an antenna 1404, and the like; wherein the functions of the foregoing components are similar to the prior art, and details are not described herein again. It should be noted that the base station 1400 does not have to include all of the components shown in FIG. 14; in addition, the base station 1400 may also include components not shown in FIG. 14, and reference may be made to the prior art.
  • the terminal can set an appropriate transmission power.
  • This embodiment provides a communication system, including a base station and a terminal.
  • the communication system 1500 includes a base station 1501 and a terminal 1502.
  • the base station 1501 may be the base station 1400 described in Embodiment 4; the terminal 1502 may be the terminal 1200 described in Embodiment 3.
  • the automobile is taken as the receiving end as an example, but the embodiment is not limited thereto.
  • the application layer of the terminal utilizes the feature that the positioning system and/or the map can understand the distance between the receiving end and the transmitting end, and provides information related to the power setting to the access layer of the terminal. Thereby, the terminal or the base station can be instructed to set an appropriate transmission power.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes the power control device or terminal to execute the power control method described in Embodiment 1 when the program is executed in a power control device or a terminal.
  • the embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a power control device or a terminal to execute the power control method described in Embodiment 1.
  • the embodiment of the present invention further provides a computer readable program, wherein the program causes the power control device or the base station to perform the power control method described in Embodiment 2 when the program is executed in a power control device or a base station.
  • An embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes a power control device or a base station to perform the power control method described in Embodiment 2.
  • the above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software.
  • the present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps.
  • the present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.
  • the power control method in the power control apparatus described in connection with the embodiments of the present invention may be directly embodied as hardware, a software module executed by a processor, or a combination of both.
  • one or more of the functional block diagrams shown in FIG. 8 or FIG. 13 and/or one or more combinations of functional block diagrams may correspond to respective software modules of a computer program flow, or may correspond to respective hardware modules.
  • These software modules may correspond to the respective steps shown in FIG. 6 or FIG. 7, respectively.
  • These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).
  • FPGA Field Programmable Gate Array
  • Software modules can be located in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM Memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.
  • a storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC.
  • the software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal.
  • the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.
  • One or more of the functional block diagrams described with respect to FIG. 8 or FIG. 13 and/or one or more combinations of functional block diagrams may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • One or more of the functional block diagrams described with respect to FIG. 8 or FIG. 13 and/or one or more combinations of functional block diagrams may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple micro A processor, one or more microprocessors in communication with the DSP, or any other such configuration.

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Abstract

一种功率控制方法、装置以及通信系统，该方法包括：终端在边链路信息的发送被触发时，获取发送功率辅助信息；根据所述发送功率辅助信息确定所述边链路信息的发送功率。通过本发明实施例，利用了终端的应用层根据定位系统和/或地图能了解接收端和发送端之间的距离的特点，将与功率设置相关的信息提供给终端的接入层，从而可以指导终端或基站设置合适的发送功率。

Description

功率控制方法、装置以及通信系统 技术领域
本发明涉及通信领域，特别涉及一种功率控制方法、装置以及通信系统。
背景技术
V2X(Vehicle-to-Everything，车辆对任何事物)通信包含V2V(Vehicle-to-Vehicle，车辆对车辆)通信，V2I(Vehicle-to-Infrastructure，车辆对基础设施)通信，以及V2P(Vehicle-to-Pedestrian，车辆对行人)通信三种类型。图1为这三种类型的通信方式的场景示意图。
在P2V(Pedestrian-to-Vehicle，行人对车辆)场景中，经过E-UTRAN(Evolved UMTS Terrestrial Radio Access Network，演进的UMTS陆地无线接入网)授权后，可以传输P2V相关的信息。P2V信息可以包括位置、终端属性等信息。P2V信息的大小也应该是可变的。P2V信息的传输可以通过直接传输的形式，即不通过任何基础设施，或者也可以借助RSU(Road Side Unit，路侧单元)等基础设施进行传输。Sidelink(边链路)通信方式就是一种直接传输的形式。
Sidelink(边链路)通信方式是指数据包无需通过核心网和基站，UE1(用户设备1)和UE2(用户设备2)之间直接建立通信链路，进行通信。在进行边链路通信前，一般会进行发现过程。比如，UE2要通过边链路通信方式发信息给UE1之前，先要发现UE1是否在附近。图2所示为两个UE(UE1和UE2)都在基站覆盖下UE的发现或建立边链路通信的示意图。图3所示为一个UE(UE1)在基站覆盖下，另一个UE(UE2)不在基站覆盖下的UE的发现或建立边链路通信的示意图。图4所示为两个UE(UE1和UE2)都不在基站覆盖下的UE的发现或建立边链路通信的示意图。
在终端进行边链路传输之前，会被配置资源池。资源池中的SA(Scheduling assignment，调度分配)资源池用于传输PSCCH(Physical Sidelink Control Channel，物理边链路控制信道)。PSCCH会承载SCI(Sidelink Control Information，边链路控制信息)格式0信息。根据目前的协议，SCI格式0信息会在SA资源池中的两个不同的子帧重复发送两次，如图5所示。
应该注意，上面对技术背景的介绍只是为了方便对本发明的技术方案进行清楚、完整的说明，并方便本领域技术人员的理解而阐述的。不能仅仅因为这些方案在本发明的背景技术部分进行了阐述而认为上述技术方案为本领域技术人员所公知。
发明内容
发明人发现，对于P2V的场景，如果只有直接传输的方式可用，当应用层触发AS(Access Stratum，接入层)发送P2V信息时，终端就会选择使用直接传输的方式发送P2V信息。当AS在选择发送功率时，会根据基站的配置设置发送功率。
然而，对于不同的场景，P2V信息的接收端相对于发送端会处于不同的距离。对于处于不同距离的接收端，发送端应该采用不同的发送功率。然而，基站和终端的AS都不了解该信息，导致无法配置一个合适的发送功率来发送该P2V信息。
针对上述问题，本发明实施例提供一种功率控制方法、装置以及通信系统。
根据本实施例的第一方面，提供了一种功率控制方法，所述方法应用于终端，其中，所述方法包括：
在所述终端被触发发送边链路信息时，获取发送功率辅助信息；
根据所述发送功率辅助信息确定所述边链路信息的发送功率。
根据本实施例的第二方面，提供了一种功率控制方法，所述方法应用于基站，其中，所述方法包括：
接收终端发送的发送功率辅助信息；
参考所述发送功率辅助信息选择或调整发送功率参数；
向终端发送所述发送功率参数，以便所述终端根据所述发送功率参数和对应的发送功率计算公式计算其边链路信息的发送功率。
根据本实施例的第三方面，提供了一种功率控制装置，所述装置配置于终端，其中，所述装置包括：
获取单元，其在所述终端被触发发送边链路信息时，获取发送功率辅助信息；
确定单元，其根据所述发送功率辅助信息确定所述边链路信息的发送功率。
根据本实施例的第四方面，提供了一种功率控制装置，所述装置配置于基站，其中，所述装置包括：
接收单元，其接收终端发送的发送功率辅助信息；
设置单元，其参考所述发送功率辅助信息选择或调整发送功率参数；
发送单元，其向终端发送所述发送功率参数，以便所述终端根据所述发送功率参数和对应的发送功率计算公式计算其边链路信息的发送功率。
根据本实施例的第五方面，提供了一种终端，其中，所述终端包括前述第三方面所述的装置。
根据本实施例的第六方面，提供了一种基站，其中，所述基站包括前述第四方面所述的装置。
根据本实施例的第七方面，提供了一种通信系统，所述通信系统包括基站和终端，所述终端具有前述第三方面所述的装置，所述基站具有前述第四方面所述的装置。
本发明实施例的有益效果在于：利用了终端的应用层根据定位系统和/或地图能了解接收端和发送端之间的距离的特点，将与功率设置相关的信息提供给终端的接入层，从而可以指导终端或基站设置合适的发送功率。
参照后文的说明和附图，详细公开了本发明的特定实施方式，指明了本发明的原理可以被采用的方式。应该理解，本发明的实施方式在范围上并不因而受到限制。在所附权利要求的条款的范围内，本发明的实施方式包括许多改变、修改和等同。
针对一种实施方式描述和/或示出的特征可以以相同或类似的方式在一个或更多个其它实施方式中使用，与其它实施方式中的特征相组合，或替代其它实施方式中的特征。
应该强调，术语“包括/包含”在本文使用时指特征、整件、步骤或组件的存在，但并不排除一个或更多个其它特征、整件、步骤或组件的存在或附加。
附图说明
在本发明实施例的一个附图或一种实施方式中描述的元素和特征可以与一个或更多个其它附图或实施方式中示出的元素和特征相结合。此外，在附图中，类似的标号表示几个附图中对应的部件，并可用于指示多于一种实施方式中使用的对应部件。
所包括的附图用来提供对本发明实施例的进一步的理解，其构成了说明书的一部分，用于例示本发明的实施方式，并与文字描述一起来阐释本发明的原理。显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。在附图中：
图1是V2X的场景示意图；
图2是边链路通信的一个场景示意图；
图3是边链路通信的另一个场景示意图；
图4是边链路通信的再一个场景示意图；
图5是用于边链路直接通信的资源池的示意图；
图6是实施例1的功率控制方法的示意图；
图7是实施例2的功率控制方法的示意图；
图8是实施例3的功率控制装置的示意图；
图9是实施例3的功率控制装置中确定单元的一个实施方式的示意图；
图10是实施例3的功率控制装置中确定单元的另一个实施方式的示意图；
图11是实施例3的功率控制装置中确定单元的再一个实施方式的示意图；
图12是实施例3的终端的示意图；
图13是实施例4的功率控制装置的示意图；
图14是实施例4的基站的示意图；
图15是实施例5的通信系统的示意图。
具体实施方式
参照附图，通过下面的说明书，本发明的前述以及其它特征将变得明显。在说明书和附图中，具体公开了本发明的特定实施方式，其表明了其中可以采用本发明的原则的部分实施方式，应了解的是，本发明不限于所描述的实施方式，相反，本发明包括落入所附权利要求的范围内的全部修改、变型以及等同物。下面结合附图对本发明的各种实施方式进行说明。这些实施方式只是示例性的，不是对本发明的限制。
在本申请中，基站可以被称为接入点、广播发射机、节点B、演进节点B(eNB)等，并且可以包括它们的一些或所有功能。在文中将使用术语“基站”。每个基站对特定的地理区域提供通信覆盖。
在本申请中，终端或设备可以被称为“用户设备”。UE可以是固定的或移动的，并且也可以称为移动台、移动站、接入终端、用户单元、站等。UE可以是蜂窝电话、个人数字助理(PDA)、无线调制解调器、无线通信设备、手持设备、膝上型计算机、无绳电话、汽车等。
在3GPP(3rd Generation Partnership Project，第三代合作伙伴计划)36.213的讨论中，对终端的发送功率的设置进行了下述规定。
对于PSCCH的发送功率，如果资源分配模式为mode1(模式1，其详细定义参考3GPP 36.213)，也即基站根据终端的请求为终端配置资源，则终端可以根据基站发送的DCI(Downlink Control Information，下行控制信息)中的TPC command(Transmitter Power Control command，发送功率控制命令)的值，确定其PSCCH的发送功率。例如，如果DCI中的TPC command为0，则终端可以根据公式(1)确定其PSCCH的发送功率；如果DCI中的TPC command为1，则终端可以根据公式(2)确定其PSCCH的发送功率。如果资源分配模式为mode2(模式2，其详细定义参考3GPP 36.213)，也即基站为终端配置资源池，终端从该资源池中选择资源，则终端可以根据公式(3)确定其PSCCH的发送功率。
PPSCCH＝PCMAX,PSCCH  (1)
PPSCCH＝min{PCMAX,PSCCH,10log10(MPSCCH)+P0_PSCCH,1+αPSCCH,1·PL}[dBm]  (2)
PPSCCH＝min{PCMAX,PSCCH,10log10(MPSCCH)+P0_PSCCH,2+αPSCCH,2·PL}[dBm]  (3)
在以上公式中，PCMAX,PSCCH为由高层配置的在PSCCH上的发送功率，其具体含义可以参考3GPP 36.101，MPSCCH为PSCCH的带宽，并且MPSCCH＝1，PL＝PLc，PLc为该终端到c服务小区的下行路损估计值，其具体含义可以参考3GPP 36.213的5.1.1.1，P0_PSCCH,1为由高层配置给mode1模式下PSCCH的P0值(功率参数)，αPSCCH， 1为由高层配置给mode1模式下PSCCH的alpha值，P0_PSCCH,2由高层配置给mode2模式下PSCCH的P0值(功率参数)，αPSCCH，2由高层配置给mode2模式下PSCCH的alpha值。
对于PSSCH(Physical Sidelink Shared Channel，物理边链路控制信道)的发送功率，与PSCCH类似，如果资源分配模式为mode1，则终端可以根据基站发送的DCI中的TPC command的值，确定其PSSCH的发送功率。例如，如果DCI中的TPC command为0，则终端可以根据公式(4)确定其PSSCH的发送功率；如果DCI中的TPC command为1，则终端可以根据公式(5)确定其PSSCH的发送功率。如果资源分配模式为mode2，则终端可以根据公式(6)确定其PSSCH的发送功率。
PPSSCH＝PCMAX,PSSCH  (4)
PPSSCH＝min{PCMAX,PSSCH,10log10(MPSSCH)+P0_PSSCH,1+αPSSCH,1·PL}[dBm]  (5)
PPSSCH＝min{PCMAX,PSSCH,10log10(MPSSCH)+P0_PSSCH,2+αPSSCH,2·PL}[dBm]  (6)
在以上公式中，PCMAX,PSSCH为由高层配置的在PSSCH上的发送功率，其具体含义可以参考3GPP 36.101，MPSSCH为PSSCH的带宽，PL＝PLc，PLc为该终端到c服务小区的下行路损估计值，其具体含义可以参考3GPP 36.213的5.1.1.1，P0_PSCCH,1为由高层配置给mode1模式下PSCCH的P0值(功率参数)，由高层配置，αPSSCH，1为由高层配置给mode1模式下PSSCH的alpha值，由高层配置，P0_PSSCH,2为由高层配置给mode2模式下PSSCH的P0值(功率参数)，αPSSCH，2为由高层配置给mode2模式下PSCCH的alpha值。
下面结合附图对本发明实施例进行说明。
实施例1
本实施例提供了一种功率控制方法，该方法应用于终端，图6是该方法的示意图，如图6所示，该方法包括：
步骤601：在边链路信息的发送被触发时，获取发送功率辅助信息；
步骤602：根据所述发送功率辅助信息确定所述边链路信息的发送功率。
在本实施例中，终端的应用层可以触发接入层发送边链路信息，例如前述的P2V信息，此外，应用层还可以根据接收端的位置向接入层提供发送功率辅助信息，以帮助终端或者基站设置合适的发送功率。
在本实施例中，由于终端的应用层根据定位系统和/或地图能了解接收端和发送端之间的距离，因此在终端的应用层触发了接入层发送边链路信息时，该应用层还可以将与功率设置相关的信息发送给接入层，以便接入层或者基站参考该信息设置合适的发送功率。
在本实施例中，终端例如为图1场景中行人手持的移动设备，接收端例如为图1场景中的车辆，此外，终端和接收端可以分别是图2-图4场景中的UE1和UE2，等等。
在本实施例中，基站可以为宏基站(例如eNB)，终端由该宏基站产生的宏小区(例如Macro cell)提供服务；本发明实施例的基站也可以为微基站，终端由该微基站产生的微小区(例如Pico cell)提供服务。本发明实施例不限于此，可以根据实际的需要确定具体的场景。
在本实施例中，发送功率辅助信息可以是接收该边链路信息的接收端与发送端 (上述终端)的距离信息，也可以是接收该边链路信息的接收端的位置信息，还可以是功率等级指示信息，例如高功率、正常功率、低功率等指示信息。
通过本实施例的方法，终端可以以合适的发送功率发送边链路信息。
在本实施例中，对于基站覆盖范围内的终端，该基站还可以通过广播信息指示终端可以使用哪些接口来发送该边链路信息，例如可以使用PC5接口，再例如可以使用UU接口等。并且，该基站还有可能通过广播信息为终端配置边链路资源池，以便终端从该资源池中选择资源以发送边链路信息。此外，随着该基站通过广播信息为终端配置边链路资源池，该基站还可以一并通过广播信息配置发送功率参数，如前所述的1比特的TPC command的值(0或1)和/或PO_PSCCH,1、αPSCCH，1和/或PO_PSSCH,1、αPSSCH，1，或者PO_PSCCH,2、αPSCCH，2和/或PO_PSSCH,2、αPSSCH，2等。该发送功率参数可以通过广播信息中的SL-TxParameters IE发送。
在本实施例的一个实施方式中，对于基站覆盖范围内的终端，该终端在获得了应用层提供的上述发送功率辅助信息之后，不将该发送功率辅助信息提供给基站，而是自行调整其发送功率。
在本实施方式中，该终端可以先根据基站配置的发送功率参数及相应的发送功率计算公式(如前所述的公式1-6)计算其边链路信息的发送功率，再参考该发送功率辅助信息调整其边链路信息的发送功率。
在本实施方式中，终端计算其边链路信息的发送功率的方式可以参考前面的描述，此处不再赘述。
在本实施方式中，基站可以提前配置一个功率调整范围，该终端在该范围内根据前述发送功率辅助信息调整其发送功率，例如，该功率调整范围可以是0，也即不调整。此外，该功率调整范围也可以是预先设置的，例如出厂时即设置好。本实施例并不以此作为限制，终端在调整其发送功率时，也可以参考其他因素，或者根据其他策略自行调整。
在本实施例的另一个实施方式中，对于基站覆盖范围内的终端，该终端在获得了应用层提供的上述发送功率辅助信息之后，可以将该发送功率辅助信息提供给基站，通过该基站来调整其边链路信息的发送功率。
在本实施方式中，该终端可以将该发送功率辅助信息发送给基站，并接收该基站根据该发送功率辅助信息选择或调整后的发送功率参数(如前所述)，并根据该选择 或调整后的发送功率参数及相应的发送功率计算公式(如前所述的公式1-6)计算其边链路信息的发送功率。
在本实施方式中，该终端可以通过sidelinkUEInformation IE向基站发送该发送功率辅助信息，但本实施例并不以此作为限制。在本实施方式中，终端计算其边链路信息的发送功率的方式可以参考前面的描述，此处不再赘述。
在本实施方式中，如果基站通过mode1为终端配置资源，则终端将发送sidelinkUEInformation IE向基站请求sidelink资源，此时，终端可以同时将上述发送功率辅助信息通过该IE发送给基站，基站可以通过PDCCH调度关于该边链路信息的PSCCH和/或PSSCH资源，并在DCI中用1bit指示PSCCH和PSSCH的发送功率。并且，该基站可以根据终端发送的该发送功率辅助信息选择或调整如前所述的发送功率参数，例如：用于该边链路信息的PSCCH和/或PSSCH的1比特的TPC command的值(0或1)，再例如，用于计算发送功率的发送功率参数，公式2涉及的P0_PSCCH,1、αPSCCH，1和/或公式5涉及的P0_PSSCH,1、αPSSCH，1等，以便终端根据该参数以及公式1和/或4，或者根据公式2和/或5计算其发送功率。
在本实施方式中，如果基站通过mode2为终端配置资源池，则在终端利用sidelinkUEInformation IE告知基站上述发送功率辅助信息后，基站可以根据终端提供的该发送功率辅助信息调整如前所述的发送功率参数，例如，用于计算发送功率的发送功率参数，公式3涉及的P0_PSCCH,2、αPSCCH，2和/或公式6涉及的P0_PSSCH,2、αPSSCH， 2等，以便终端根据该参数以及公式3和/或6计算其发送功率。
在本实施例的又一个实施方式中，对于基站覆盖范围外的终端，由于没有基站为其提供服务，则该终端在获得了应用层提供的上述发送功率辅助信息之后，可以自行调整其边链路信息的发送功率。
在本实施方式中，该终端可以参考该发送功率辅助信息调整预先配置的边链路信息的发送功率。
在本实施方式中，由于终端已经离开了基站的覆盖范围，不再接收基站发送的信息，因此其可以参考上述发送功率辅助信息调整边链路信息的发送功率。该边链路信息的发送功率是预先配置的，例如出厂时配置好的。并且，功率调整范围可以是预先设置的，例如在出厂时即设置好，由此，终端可以在该范围内根据前述发送功率辅助信息调整其发送功率，例如，该功率调整范围可以是0，也即不调整。此外，对于功 率调整方式，本实施例并不以此作为限制，终端在调整其发送功率时，也可以参考其他因素，或者根据其他策略自行调整。
通过本实施例的方法，利用了终端的应用层根据定位系统和/或地图能了解接收端和发送端之间的距离的特点，将与功率设置相关的信息提供给终端的接入层，从而可以指导终端或基站设置合适的发送功率。
实施例2
本实施例提供了一种功率控制方法，该方法应用于基站，由于该方法是与实施例1的方法对应的基站的处理，因此与实施例1相同的内容不再重复说明。
图7是本实施例的方法的示意图，如图7所示，该方法包括：
步骤701：接收终端发送的发送功率辅助信息；
步骤702：参考所述发送功率辅助信息选择或调整发送功率参数；
步骤703：向终端发送所述发送功率参数，以便所述终端根据所述发送功率参数和对应的发送功率计算公式计算其边链路信息的发送功率。
在本实施例中，该发送功率辅助信息可以是接收所述边链路信息的接收端与发送端(上述终端)的距离信息；也可以是接收所述边链路信息的接收端的位置信息；还可以是功能等级指示信息等，具体如前所述，此处不再赘述。
在本实施例中，发送功率参数例如为1比特的TPC command的值(0或1)和/或PO_PSCCH,1、αPSCCH，1和/或PO_PSSCH,1、αPSSCH，1，或者PO_PSCCH,2、αPSCCH，2和/或PO_PSSCH,2、αPSSCH，2等，具体如前所述，此处不再赘述。
通过本实施例的方法，利用了终端的应用层根据定位系统和/或地图能了解接收端和发送端之间的距离的特点，将与功率设置相关的信息提供给终端的接入层，由终端的接入层再将该信息提供给基站，从而可以指导基站选择合适的发送功率参数，进而帮助终端设置合适的发送功率。
实施例3
本实施例提供了一种功率控制装置，该装置配置于终端，由于该装置解决问题的原理与实施例1的方法类似，因此其具体的实施可以参考实施例1的方法的实施，内容相同之处不再重复说明。
图8是本实施例的功率控制装置的示意图，如图8所示，该装置800包括：获取单元801和确定单元802，该获取单元801在终端被触发发送边链路信息时，获取发送功率辅助信息，该确定单元802根据该发送功率辅助信息确定上述边链路信息的发送功率。
在本实施例中，该发送功率辅助信息为：接收所述边链路信息的接收端与发送端的距离信息；或者接收所述边链路信息的接收端的位置信息；或者功率等级指示信息。
在本实施例中，该获取单元801是从终端的应用层获取上述发送功率辅助信息。
在本实施例的一个实施方式中，如图9所示，该确定单元802包括：第一计算单元901和第一调整单元902，该第一计算单元901根据基站配置的发送功率参数及相应的发送功率计算公式计算上述边链路信息的发送功率，该第一调整单元902根据基站配置的功率调整范围，参考上述发送功率辅助信息调整上述边链路信息的发送功率。
在本实施例的另一个实施方式中，如图10所示，该确定单元802包括：发送单元1001、接收单元1002、以及第二计算单元1003。该发送单元1001将上述发送功率辅助信息发送给基站；该接收单元1002接收上述基站根据上述发送功率辅助信息选择或调整后的发送功率参数；该第二计算单元1003根据上述选择或调整后的发送功率参数及相应的发送功率计算公式计算上述边链路信息的发送功率。
在本实施例的再一个实施方式中，如图11所示，该确定单元802包括：第二调整单元1101，该第二调整单元1101根据预先配置的功率调整范围，参考上述发送功率辅助信息调整预先配置的边链路信息的发送功率。
通过本实施例的装置，可以指导终端或基站设置合适的发送功率。
本实施例还提供了一种终端，配置有如前所述的功率控制装置800。
图12是本发明实施例的终端1200的系统构成的示意框图。如图12所示，该终端1200可以包括中央处理器1201和存储器1202；存储器1202耦合到中央处理器1201。值得注意的是，该图是示例性的；还可以使用其他类型的结构，来补充或代替该结构，以实现电信功能或其他功能。
在一个实施方式中，功率控制装置800的功能可以被集成到中央处理器1201中。其中，中央处理器1201可以被配置为实现实施例1所述的功率控制方法。
例如，该中央处理器1201可以被配置为进行如下控制：在边链路信息的发送被 触发时，获取发送功率辅助信息；根据所述发送功率辅助信息确定所述边链路信息的发送功率。
在另一个实施方式中，功率控制装置800可以与中央处理器801分开配置，例如可以将功率控制装置800配置为与中央处理器1201连接的芯片，通过中央处理器1201的控制来实现功率控制装置800的功能。
如图12所示，该终端1200还可以包括：通信模块1203、输入单元1204、音频处理单元1205、显示器1206、电源1207。值得注意的是，终端1200也并不是必须要包括图12中所示的所有部件；此外，终端1200还可以包括图12中没有示出的部件，可以参考现有技术。
如图12所示，中央处理器1201有时也称为控制器或操作控件，可以包括微处理器或其他处理器装置和/或逻辑装置，该中央处理器1201接收输入并控制终端1200的各个部件的操作。
其中，存储器1202，例如可以是缓存器、闪存、硬驱、可移动介质、易失性存储器、非易失性存储器或其它合适装置中的一种或更多种。可储存上述发送功率辅助信息、发送功率参数、发送功率计算公式等信息，此外还可存储执行有关信息的程序。并且中央处理器1201可执行该存储器1202存储的该程序，以实现信息存储或处理等。其他部件的功能与现有类似，此处不再赘述。终端1200的各部件可以通过专用硬件、固件、软件或其结合来实现，而不偏离本发明的范围。
通过本实施例的终端，可以指导终端或基站设置合适的发送功率。
实施例4
本实施例提供了一种功率控制装置，该装置配置于基站，由于该装置解决问题的原理与实施例2的方法类似，因此其具体的实施可以参考实施例2的方法的实施，内容相同之处不再重复说明。
图13是本实施例的功率控制装置的示意图，如图13所示，该装置1300包括：接收单元1301、设置单元1302和发送单元1303，该接收单元1301接收终端发送的发送功率辅助信息；该设置单元1302参考上述发送功率辅助信息选择或调整发送功率参数；该发送单元1303向终端发送上述发送功率参数，以便上述终端根据该发送功率参数和对应的发送功率计算公式计算其边链路信息的发送功率。
在本实施例中，该发送功率辅助信息为：接收所述边链路信息的接收端与发送端的距离信息；或者接收所述边链路信息的接收端的位置信息；或者功率等级指示信息。
通过本实施例的装置，终端可以设置合适的发送功率。
本实施例还提供一种基站，该基站配置有如前所述的功率控制装置1300。
图14是本发明实施例的基站的构成示意图。如图14所示，基站1400可以包括：中央处理器(CPU)1401和存储器1402；存储器1402耦合到中央处理器1401。其中该存储器1402可存储各种数据；此外还存储信息处理的程序，并且在中央处理器1401的控制下执行该程序，以接收该用户设备发送的各种信息、并且向用户设备发送各种信息。
在一个实施方式中，功率控制装置1300的功能可以被集成到中央处理器1401中。其中，中央处理器1401可以被配置为实现实施例2所述的功率控制方法。
例如，该中央处理器1401可以被配置为：接收终端发送的发送功率辅助信息；参考所述发送功率辅助信息选择或调整发送功率参数；向终端发送所述发送功率参数，以便所述终端根据所述发送功率参数和对应的发送功率计算公式计算其边链路信息的发送功率。
在另一个实施方式中，上述功率控制装置1300可以与中央处理器1401分开配置，例如可以将功率控制装置1300配置为与中央处理器1401连接的芯片，通过中央处理器1401的控制来实现功率控制装置1300的功能。
此外，如图14所示，基站1400还可以包括：收发机1403和天线1404等；其中，上述部件的功能与现有技术类似，此处不再赘述。值得注意的是，基站1400也并不是必须要包括图14中所示的所有部件；此外，基站1400还可以包括图14中没有示出的部件，可以参考现有技术。
通过本实施例的基站，终端可以设置合适的发送功率。
实施例5
本实施例提供一种通信系统，包括基站以及终端。
图15是本发明实施例的通信系统的构成示意图，如图15所示，该通信系统1500包括基站1501以及终端1502。其中，基站1501可以是实施例4中所述的基站1400；终端1502可以是实施例3中所述的终端1200。
在本实施例中，以汽车作为接收端为例，但本实施例并不以此作为限制。
由于在前述实施例中，已经对终端1200和基站1400进行了详细说明，其内容被合并于此，此处不再赘述。
通过本实施例的通信系统，利用了终端的应用层根据定位系统和/或地图能了解接收端和发送端之间的距离的特点，将与功率设置相关的信息提供给终端的接入层，从而可以指导终端或基站设置合适的发送功率。
本发明实施例还提供一种计算机可读程序，其中当在功率控制装置或终端中执行所述程序时，所述程序使得所述功率控制装置或终端执行实施例1所述的功率控制方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得功率控制装置或终端执行实施例1所述的功率控制方法。
本发明实施例还提供一种计算机可读程序，其中当在功率控制装置或基站中执行所述程序时，所述程序使得所述功率控制装置或基站执行实施例2所述的功率控制方法。
本发明实施例还提供一种存储有计算机可读程序的存储介质，其中所述计算机可读程序使得功率控制装置或基站执行实施例2所述的功率控制方法。
本发明以上的装置和方法可以由硬件实现，也可以由硬件结合软件实现。本发明涉及这样的计算机可读程序，当该程序被逻辑部件所执行时，能够使该逻辑部件实现上文所述的装置或构成部件，或使该逻辑部件实现上文所述的各种方法或步骤。本发明还涉及用于存储以上程序的存储介质，如硬盘、磁盘、光盘、DVD、flash存储器等。
结合本发明实施例描述的在功率控制装置中的功率控制方法可直接体现为硬件、由处理器执行的软件模块或二者组合。例如，图8或图13中所示的功能框图中的一个或多个和/或功能框图的一个或多个组合，既可以对应于计算机程序流程的各个软件模块，亦可以对应于各个硬件模块。这些软件模块，可以分别对应于图6或图7所示的各个步骤。这些硬件模块例如可利用现场可编程门阵列(FPGA)将这些软件模块固化而实现。
软件模块可以位于RAM存储器、闪存、ROM存储器、EPROM存储器、EEPROM 存储器、寄存器、硬盘、移动磁盘、CD-ROM或者本领域已知的任何其它形式的存储介质。可以将一种存储介质耦接至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息；或者该存储介质可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。该软件模块可以存储在移动终端的存储器中，也可以存储在可插入移动终端的存储卡中。例如，若设备(例如移动终端)采用的是较大容量的MEGA-SIM卡或者大容量的闪存装置，则该软件模块可存储在该MEGA-SIM卡或者大容量的闪存装置中。
针对图8或图13描述的功能框图中的一个或多个和/或功能框图的一个或多个组合，可以实现为用于执行本申请所描述功能的通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或其它可编程逻辑器件、分立门或晶体管逻辑器件、分立硬件组件、或者其任意适当组合。针对图8或图13描述的功能框图中的一个或多个和/或功能框图的一个或多个组合，还可以实现为计算设备的组合，例如，DSP和微处理器的组合、多个微处理器、与DSP通信结合的一个或多个微处理器或者任何其它这种配置。
以上结合具体的实施方式对本发明进行了描述，但本领域技术人员应该清楚，这些描述都是示例性的，并不是对本发明保护范围的限制。本领域技术人员可以根据本发明的原理对本发明做出各种变型和修改，这些变型和修改也在本发明的范围内。

Claims (9)

  1. 一种功率控制装置，所述装置配置于终端，其中，所述装置包括：
    获取单元，其在所述终端被触发发送边链路信息时，获取发送功率辅助信息；
    确定单元，其根据所述发送功率辅助信息确定所述边链路信息的发送功率。
  2. 根据权利要求1所述的装置，其中，所述发送功率辅助信息为：
    接收所述边链路信息的接收端与发送端的距离信息；或者
    接收所述边链路信息的接收端的位置信息；或者
    功率等级指示信息。
  3. 根据权利要求1所述的装置，其中，所述获取单元从所述终端的应用层获取所述发送功率辅助信息。
  4. 根据权利要求1所述的装置，其中，所述确定单元包括：
    第一计算单元，其根据基站配置的发送功率参数及相应的发送功率计算公式计算所述边链路信息的发送功率；
    第一调整单元，其根据基站配置的功率调整范围，参考所述发送功率辅助信息调整所述边链路信息的发送功率。
  5. 根据权利要求1所述的装置，其中，所述确定单元包括：
    发送单元，其将所述发送功率辅助信息发送给基站；
    接收单元，其接收所述基站根据所述发送功率辅助信息选择或调整后的发送功率参数；
    第二计算单元，其根据所述选择或调整后的发送功率参数及相应的发送功率计算公式计算所述边链路信息的发送功率。
  6. 根据权利要求1所述的装置，其中，所述确定单元包括：
    第二调整单元，其根据预先配置的功率调整范围，参考所述发送功率辅助信息调整预先设置的边链路信息的发送功率。
  7. 一种功率控制装置，所述装置配置于基站，其中，所述装置包括：
    接收单元，其接收终端发送的发送功率辅助信息；
    设置单元，其参考所述发送功率辅助信息选择或调整发送功率参数；
    发送单元，其向终端发送所述发送功率参数，以便所述终端根据所述发送功率参 数和对应的发送功率计算公式计算其边链路信息的发送功率。
  8. 根据权利要求7所述的装置，其中，所述发送功率辅助信息为：
    接收所述边链路信息的接收端与发送端的距离信息；或者
    接收所述边链路信息的接收端的位置信息；或者
    功率等级指示信息。
  9. 一种通信系统，所述通信系统包括基站和终端，所述终端具有权利要求1-6任一项所述的装置，所述基站具有权利要求7-8任一项所述的装置。
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