CN107018564A - A kind of D2D terminal transmitted power control methods in loss covering scene - Google Patents

A kind of D2D terminal transmitted power control methods in loss covering scene Download PDF

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Publication number
CN107018564A
CN107018564A CN201710404833.8A CN201710404833A CN107018564A CN 107018564 A CN107018564 A CN 107018564A CN 201710404833 A CN201710404833 A CN 201710404833A CN 107018564 A CN107018564 A CN 107018564A
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pscch
pssch
terminals
psbch
terminal
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CN107018564B (en
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段红光
赵栋生
郑建宏
罗静
罗一静
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Chongqing University of Post and Telecommunications
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Chongqing University of Post and Telecommunications
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H04W52/322—Power control of broadcast channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes

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

Abstract

The present invention relates to a kind of D2D terminal transmitted power control methods lost in covering scene, belong to moving communicating field.This method meet D2D terminals send signal to cell base station it is jamproof under the conditions of, main straight-through link synchronization signal PSSS, the straight-through discovery channel PSDCH of auxiliary straight-through link synchronization signal SSSS and physics are sent using peak power, but physics leads directly to CCCH PSCCH and physics leads directly to shared channel PSSCH then using the minimum power transmission for meeting D2D terminal direct connection communicating requirements.Present invention preserves the existing transmitted power control method of SLSS/PSBCH and PSDCH physical channels, it is ensured that D2D terminals by other D2D terminal searchings and can understand relevant information；Both two D2D terminal proper communication requirements had been ensure that, while reducing the interference that D2D leads directly to link pair cell base station again；The output of D2D power consumption of terminal is saved, is conducive to improving D2D end-user experiences.

Description

A kind of D2D terminal transmitted power control methods in loss covering scene
Technical field
The invention belongs to GSM field, it is related to a kind of D2D terminal transmit power controls lost in covering scene Method processed.
Background technology
With continuing to develop for the communication technology, next generation mobile communication system --- IMT-Advanced Load is employed in (International MobileTelecommunications-Advanced, IMT-Advanced) system Ripple polymerization (Carrier Aggregation, CA) technology, enhanced multiple-input, multiple-output (Multiple-InputMultiple- Output, MIMO) antenna technology, collaboration multicast communication (CoordinatedMultiplePoints, CoMP) technology and relaying skill Art, on the basis of original cell mobile communication systems, further increases power system capacity, improves the number of Cell Edge User According to speed and Consumer's Experience.However, due to MPS process of the cellular communication system centered on base station and business presentation mode sheet Limitation present in body, IMT-Advanced systems still suffer from the problem of covering is with terms of capacity, and research shows that terminal is straight It is logical that ((Device-to-Device Communication, D2D) technology is saving resource, is reducing interference and lifting efficiency of transmission There is huge advantage etc. many-side, but also need to carefully study and optimize at many aspects.
In the prior art, the resource allocation of D2D user is mainly using the resource allocation under multiplexer mode.Multiplexer mode is again It is divided into multiplexing downlink resource and multiplexing ascending resource.When the ascending resource of D2D links reuse pattern terminal, present in system The transmitting terminal for receiving D2D receiving terminals interference that signal causes and D2D for phone user's transmitting terminal is disturbed normally to connect base station The interference of the collection of letters number.When D2D links reuse pattern user equipment downlink resource, interference present in cell includes D2D transmitting terminals pair Interference and transmission end of base station that this cell CUE is brought receive D2D receiving terminals the interference of signal.The resource allocation one of D2D user As can design different optimization aims according to actual needs, such as maximize system handling capacity, minimize system interference, most The power of smallization system, maximizes availability of frequency spectrum etc., but D2D terminal transmit powers are bigger also bigger to area interference.
In D2D systems, straight-through link physical channel has straight-through link synchronisation channel (referred to as：SLSS), physical layer is led directly to CCCH is (referred to as：PSCCH), physical layer leads directly to shared channel (referred to as：PSSCH), lead directly to physical layer and find channel (referred to as：PSDCH).So in D2D systems, research D2D terminal-pairs area interference mainly study SLSS, PSCCH, PSSCH and PSDCH physical layers to cell base station interference, so in Practical Project, it is necessary to D2D terminals send SLSS, PSCCH, PSSCH and PSDCH physical channel powers are controlled.
In current third generation partner program (referred to as：In 3GPP), according to 3GPP technical specifications LTE-Advanced's Physical layer procedure specification is (referred to as：TS36.213) describe.In order to reduce when D2D terminals progress direct communication to cell base station Influence, sends the various physical channel transmitting powers on straight-through link for D2D terminals and provides, be defined as follows：
Terminals physical leads directly to shared channel (referred to as：PSSCH) transmit power is as follows：
If the transmission power control information carried in straight-through link is assigned is (referred to as：TPC it is) 0, then PSSCH is in correspondence The transmit power of frame is (referred to as：PPSSCH) be：
PPSSCH=PCMAX,PSSCH
If the transmission power control information carried in straight-through link is assigned is (referred to as：TPC it is) 1, then PSSCH is in correspondence The transmit power of frame is：
PPSSCH=min { PCMAX,PSSCH,10log10(MPSSCH)+PO_PSSCH,1+αPSSCH,1·PL}[dBm]
Wherein：PCMAX,PSSCHRepresent D2D terminal emission maximum PSSCH channel powers, MPSSCHTransmission is distributed in expression
The bandwidth of PSSCH resources；PO_PSSCH,1And αPSSCH,1Configuration information from cell base station, PL then represent terminal and Path loss between cell base station.
TS36.213 description is referred to as a same reason, can be obtained physics and be led directly to control channel (referred to as：PSCCH) in correspondence The transmission power of frame is：
If the transmission power control information carried in straight-through link is assigned is (referred to as：TPC it is) 0, then PSCCH is in correspondence The transmit power of frame is (referred to as：PPSCCH) be：
PPSCCH=PCMAX,PSCCH
If the transmission power control information carried in straight-through link is assigned is (referred to as：TPC it is) 1, then PSCCH is in correspondence The transmit power of frame is：
PPSCCH=min { PCMAX,PSCCH,10log10(MPSCCH)+PO_PSCCH,1+αPSCCH,1·PL}[dBm]
Wherein：PCMAX,PSCCHRepresent D2D terminal emission maximum PSCCH channel powers, MPSCCHTransmission PSCCH is distributed in expression The bandwidth of resource；PO_PSCCH,1And αPSCCH,1Configuration information from cell base station, PL is then represented between terminal and cell base station Path loss.
TS36.213 description is referred to as a same reason, can obtain the straight-through discovery channel of physics (referred to as：PSDCH) in correspondence The transmission power of frame is (referred to as：PPSDCH) be
PPSDCH=min { PCMAX,PSDCH,10log10(MPSDCH)+PO_PSDCH,1+αPSDCH,1·PL}
Wherein：PCMAX,PSDCHRepresent D2D terminal emission maximum PSDCH channel powers, MPSDCHTransmission PSDCH is distributed in expression The bandwidth of resource；PO_PSDCH,1And αPSDCH,1Configuration information from cell base station, PL is then represented between terminal and cell base station Path loss.
TS36.213 description is referred to as a same reason, because SLSS is made up of two physical channels, i.e., main straight-through link Synchronizing channel is (referred to as：PSSS) and auxiliary straight-through link synchronisation channel (referred to as：SSSS), distribution gives two in TS36.213 The transmit power of synchronizing channel：
If leading directly to the transmission power control information (abbreviation carried during link is assigned in PSCCH：TPC be) 0, then it is main straight-through Link synchronisation channel transmission power is (referred to as：PPSSS), auxiliary straight-through link synchronisation channel transmission power is (referred to as：PSSSS), it is specifically defined It is as follows：
PPSSS=PCMAX,PSBCH
PSSSS=PCMAX,SSSS
Otherwise,
PPSSS=min { PCMAX,PSBCH,10log10(MPSSS)+PO_PSSS+αPSSS·PL}[dBm],
PSSSS=min { PCMAX,SSSS,10log10(MPSSS)+PO_PSSS+αPSSS·PL}[dBm],
Wherein：PCMAX,PSBCHRepresent D2D terminal emission maximum PSBCH channel powers, PCMAX,SSSSRepresent that D2D terminals are maximum Launch SSSS channel powers, MPSSSRepresent to distribute to the bandwidth for transmitting PSSS resources；PO_PSSSAnd αPSSSMatching somebody with somebody from cell base station Confidence ceases, and PL then represents the path loss between terminal and cell base station.
From the equations above as can be seen that D2D sends the straight-through physical channels of various D2D in D2D systems, it is desirable in cell In the range of the interference limitation of base station, D2D terminals will be sent using peak power.
But in actual D2D usage scenarios, there is certain difference, D2D communications in the terminal distance of two D2D communications Terminal standoff distance is not fixed, although D2D, which leads directly to physical channel and cell base station interference control is met, can tolerate model In enclosing, but this interference is present all the time.The power consumption and physical channel transmitting power of other D2D directinterminations are linear to be increased Plus, at a distance of less D2D terminals, if transmission power is excessive also to influence D2D terminal receptivities, it is therefore necessary to allow D2D terminals can be sent under the conditions of cell base station interference range is met using the non-peak power of physical layer channel.
The content of the invention
In view of this, it is an object of the invention to provide a kind of D2D terminals transmit power control lost in covering scene Method, this method is under conditions of D2D terminals transmission signal is met to cell base station interference, main straight-through link synchronization signal (letter Claim：PSSS), auxiliary straight-through link synchronization signal (abbreviation：SSSS) lead directly to physics and find channel (referred to as：PSDCH) using maximum Power is sent, but physics leads directly to CCCH (referred to as：PSCCH) and physics lead directly to shared channel (referred to as：PSSCH) then Sent using the minimum power for meeting D2D terminal direct connection communicating requirements, reduce the interference that D2D leads directly to link pair cell base station, Be conducive to improving D2D end-user experiences.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of D2D terminal transmitted power control methods in loss covering scene, comprise the following steps：
S1：First D2D terminals determine the power that transmission PSBCH physical channels need first, are designated as PPSBCHValue, then will PPSBCH, expect receive minimum PSCCH and PSSCH signal powers value, be designated as PPSCCH_rxLevMinAnd PPSSCH_rxLevMinIt is encoded to In PSBCH data blocks；
S2：First D2D terminals send SLSS and PSBCH on fixed running time-frequency resource, and wherein PSBCH physical channels are adopted Use PPSBCHPower is sent；2nd D2D terminals carry out SLSS synchronizations to the first D2D terminals first, then measure PSBCH physical channels Power, is designated as RPSBCH；2nd D2D terminals are according to PPSBCHAnd RPSBCHPower meter calculates the path loss PL between two D2D terminalsD；
S3：The parsing of 2nd D2D terminals receives the data block that the first D2D terminals send PSBCH physical channels, obtains first D2D terminals expect the minimum PSCCH and PSSCH channel powers P receivedPSCCH_rxLevMinAnd PPSSCH_rxLevMinParameter；
S4：2nd D2D terminals calculate PPSCCHAnd PPSSCHTransmission power；
S5：2nd D2D terminals use PPSCCHAnd PPSSCHTransmission power sends the data on PSCCH and PSSCH channels.
Further, the step S4 specifically includes following steps：
S401：Physics is led directly into CCCH PSCCH physical channel transmitting powers to be defined as
PD2D_PSCCH=10log (MPSCCH)+PPSCCH_RxLevMin+PLD
Wherein, PPSCCH_RxLevMinRepresent that D2D terminals receive PSCCH physical channel minimal power requirements, PLDRepresent two Path loss, M are wirelessly transferred between D2D terminalsPSCCHRepresent to distribute to the bandwidth for transmitting PSCCH resources.
If the transmission power control information TPC carried in straight-through link is assigned is hairs of 0, the PSCCH in correspondence frame Send power PPSCCHFor：
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH}
If the transmission power control information TPC carried in straight-through link is assigned is hairs of 1, the PSCCH in correspondence frame Send power PPSCCHFor：
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH,10log10(MPSCCH)+PO_PSCCH,1+αPSCCH,1·PLC}[dBm]
Wherein, PCMAX,PSCCHRepresent D2D terminal PSCCH channel maximum transmission power, MPSCCHShow and distribute to transmission PSCCH moneys The bandwidth in source；PO_PSCCH,1And αPSCCH,1Configuration information from cell base station, PLCThen represent the road between terminal and cell base station Damage.
S402：Physics is led directly into shared channel PSSCH physical channel transmitting powers to be defined as
PD2D_PSSCH=10log (MPSSCH)+PPSSCH_RxLevMin+PLD
Wherein, PPSSCH_RxLevMinRepresent that D2D terminals receive PSSCH physical channel minimal power requirements, PLDRepresent two Path loss, M are wirelessly transferred between D2D terminalsPSSCHRepresent to distribute to the bandwidth for transmitting PSSCH resources.
If the transmission power control information TPC carried in straight-through link is assigned is hairs of 0, the PSSCH in correspondence frame Send power PPSSCHFor：
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH}
If the transmission power control information TPC carried in straight-through link is assigned is hairs of 1, the PSSCH in correspondence frame Send power PPSSCHFor：
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH,10log10(MPSSCH)+PO_PSSCH,1+αPSSCH,1·PLC}[dBm]
Wherein：PCMAX,PSSCHRepresent D2D terminal emission maximum PSSCH channel powers, MPSSCHTransmission PSSCH is distributed in expression The bandwidth of resource；PO_PSSCH,1And αPSSCH,1Configuration information from cell base station, PLCThen represent between terminal and cell base station Path loss.
The beneficial effects of the present invention are：
(1) present invention preserves the existing transmitted power control method of SLSS/PSBCH and PSDCH physical channels, it is ensured that D2D terminals by other D2D terminal searchings and can understand relevant information.
(2) present invention is limited the power of PSCCH and PSSCH physical channels, can either ensure two D2D terminals just Normal communicating requirement, while reducing the interference that D2D leads directly to link pair cell base station again.
(3) transmission power of the present invention due to reducing PSCCH and PSSCH physical channels, saves D2D power consumption of terminal defeated Go out, be conducive to improving D2D end-user experiences.
Brief description of the drawings
In order that the purpose of the present invention, technical scheme and beneficial effect are clearer, the present invention provides drawings described below and carried out Explanation：
Fig. 1 is that D2D terminals determine PSCCH and PSSCH physical channel transmitting power flow charts；
Fig. 2 is communication structure figure between D2D in D2D systems；
Fig. 3 is the straight-through physical link transmission power flow chart of D2D terminals generation.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
As shown in figure 1, the present invention specifically includes following steps：
S1：First D2D terminals determine the power that transmission PSBCH physical channels need first, are designated as PPSBCHValue, then will PPSBCH, expect receive minimum PSCCH and PSSCH signal powers value, be designated as PPSCCH_rxLevMinAnd PPSSCH_rxLevMinIt is encoded to In PSBCH data blocks.Such as 1,2 steps in Fig. 1.
S2：First D2D terminals send SLSS and PSBCH on fixed running time-frequency resource, and wherein PSBCH physical channels are adopted Use PPSBCHPower is sent；2nd D2D terminals carry out SLSS synchronizations to the first D2D terminals first, then measure PSBCH physical channels Power, is designated as RPSBCH；2nd D2D terminals are according to PPSBCHAnd RPSBCHPower meter calculates the path loss PL between two D2D terminalsD.Such as 3,4 step in Fig. 1.
S3：The parsing of 2nd D2D terminals receives the data block that the first D2D terminals send PSBCH physical channels, and parsing obtains the One D2D terminals expect the minimum PSCCH and PSSCH channel powers P receivedPSCCH_rxLevMinAnd PPSSCH_rxLevMinParameter.Such as Fig. 1 In 5 steps.
S4：2nd D2D terminals calculate PPSCCHAnd PPSSCHTransmission power.Such as 6 steps in Fig. 1.
S5：2nd D2D terminals use PPSCCHAnd PPSSCHTransmission power sends the data on PSCCH and PSSCH channels.Such as 7 step in Fig. 1.
The present invention implements flow in D2D terminal control PSCCH and PSSCH physical channel transmitting powers, such as Fig. 1 institutes Show there is the first D2D terminals and the 2nd D2D terminals in D2D systems.Can be just between first D2D terminals and the 2nd D2D terminals Normal open is believed.In embodiment, also support the first D2D terminals and the 2nd D2D terminals be in cell base station signals coverage or Outside coverage.
In this embodiment, it is first assumed that the first D2D terminals are in transmission state, the 2nd D2D terminals are in reception state, Otherwise processing is also identical.
2nd D2D terminal control physical channel transmit power methods, it is specific as shown in Figure 3：
Step 1：Before 2nd D2D terminals and the first D2D terminals lead directly to, the 2nd D2D terminals detect the first D2D first The SLSS signals that terminal is sent, and understand the broadcast channel information of PSBCH on straight-through link.Such as 1 step in Fig. 3.
Step 2：The system message broadcasted according to PSBCH on straight-through link, parses first terminal PSBCH physical channels hair Power is sent, P is designated asPSBCH.Then the 2nd D2D terminals will measure the first D2D terminals transmission PSBCH signal power, be designated as RPSBCH.The two differences are exactly the path loss that PSBCH physical channels are transmitted in the air, are designated as PLD=PPSBCH-RPSBCH.As in Fig. 3 2,3,4 steps.
Further describe, according to the radio resource control in 3GPP on LTE-Advanced (referred to as： TS36.331 definition) is on PSBCH system message contents：
Wherein, sl_Bandwidth represents straight-through link bandwidth；Tdd_ConfigSL represents straight-through link using TDD still Fdd mode；DirectFrameNumber represents to carry the frame number of the PSBCH data blocks on straight-through link； DirectSubframeNumber represents to carry the subframe numbers of the PSBCH data blocks on straight-through link.InCoverage is then represented Whether the D2D terminals for sending PSBCH are in cell base station coverage.Reserved belongs to reserved field, represents following extension Use, amount to 19 bit lengths.
In the present embodiment, 19 bits are divided into three parts, carry respectively PSBCH physical layer channels transmit powers, The minimum received signal powers of PSCCH and PSSCH.
PSBCH is encoded in this embodiment, is amounted to 7 bits and is represented that unit is dbm, is specifically defined as：
psbchSignalPower INTEGER(-60..30)
Minimum PSCCH received signal powers PPSCCH_rxLevMinCoding, amounts to 6 bits and represents that unit is dbm, is specifically defined For：
pscch_rxLevMin_Power INTEGER(-70..-22)
Minimum PSSCH received signal powers PPSSCH_rxLevMinCoding, amounts to 6 bits and represents that unit is dbm, is specifically defined For：
pssch_rxLevMin_Power INTEGER(-70..-22)
So in embodiments of the present invention, D2D terminal system information blocks are defined as：
Step 3：2nd D2D terminals parse the first D2D terminals from PSBCH physical channels and receive PSCCH and PSSCH things Manage the minimum power P that channel needsPSCCH_rxLevMinAnd PPSSCH_rxLevMinValue.Such as 5 steps in Fig. 3.
Step 4：2nd D2D terminals calculate P according to 3GPP TS36.213 requirementD2D_PSSSAnd PD2D_SSSSLaunch work( Rate value.Such as 6 steps in Fig. 3.Circular is as follows：
If leading directly to the transmission power control information (abbreviation carried during link is assigned in PSCCH：TPC be) 0, then it is main straight-through Link synchronisation channel transmission power is (referred to as：PPSSS), auxiliary straight-through link synchronisation channel transmission power is (referred to as：PSSSS), it is specifically defined It is as follows：
PD2D_PSSS=PCMAX,PSBCH
PD2D_SSSS=PCMAX,SSSS
Otherwise,
PD2D_PSSS=min { PCMAX,PSBCH,10log10(MPSSS)+PO_PSSS+αPSSS·PLC}[dBm],
PD2D_SSSS=min { PCMAX,SSSS,10log10(MPSSS)+PO_PSSS+αPSSS·PLC}[dBm],
Wherein：PCMAX,PSBCHRepresent D2D terminal emission maximum PSBCH channel powers, PCMAX,SSSSRepresent that D2D terminals are maximum Launch SSSS channel powers, MPSSSRepresent to distribute to the bandwidth for transmitting PSSS resources；PO_PSSSAnd αPSSSMatching somebody with somebody from cell base station Confidence ceases, PLCThen represent the path loss between terminal and cell base station.
Step 5：2nd D2D terminals calculate P according to 3GPPTS36.213 requirementD2D_PDSCHTransmission power level.Such as Fig. 3 In 7 steps.Circular is as follows：
PD2D_PSDCH=min { PCMAX,PSDCH,10log10(MPSDCH)+PO_PSDCH,1+αPSDCH,1·PLC}
Wherein：PCMAX,PSDCHRepresent D2D terminal emission maximum PSDCH channel powers, MPSDCHTransmission PSDCH is distributed in expression The bandwidth of resource；PO_PSDCH,1And αPSDCH,1Configuration information from cell base station, PLCThen represent between terminal and cell base station Path loss.
Step 6：P is calculated according to mode of the present inventionPSCCH8 steps in transmission power level, such as Fig. 2, calculating P thereinPSCCHTool Body is as follows：
PD2D_PSCCH=10log (MPSCCH)+PPSCCH_RxLevMin+PLD
Wherein, PPSCCH_rxLevMinRepresent that D2D terminals receive PSCCH physical channel minimal power requirements, PLDRepresent two Path loss, M are wirelessly transferred between D2D terminalsPSCCHRepresent to distribute to the bandwidth for transmitting PSCCH resources.
If the transmission power control information carried in straight-through link is assigned is (referred to as：TPC it is) 0, then PSCCH is in correspondence The transmit power of frame is (referred to as：PPSCCH) be：
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH}
If the transmission power control information carried in straight-through link is assigned is (referred to as：TPC it is) 1, then PSCCH is in correspondence The transmit power of frame is：
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH,10log10(MPSCCH)+PO_PSCCH,1+αPSCCH,1·PLC}[dBm]
Wherein：PCMAX,PSCCHRepresent D2D terminal emission maximum PSCCH channel powers, MPSCCHTransmission PSCCH is distributed in expression The bandwidth of resource；PO_PSCCH,1And αPSCCH,1Configuration information from cell base station, PLCThen represent between terminal and cell base station Path loss.
Step 7：P is calculated according to mode of the present inventionPSSCH9 steps in transmission power level, such as Fig. 3, wherein calculating PPSSCHSpecifically It is as follows：
PD2D_PSSCH=10log (MPSSCH)+PPSSCH_RxLevMin+PLD
Wherein, PPSSCH_RxLevMinRepresent that D2D terminals receive PSSCH physical channel minimal power requirements, PLDRepresent two Path loss, M are wirelessly transferred between D2D terminalsPSSCHRepresent to distribute to the bandwidth for transmitting PSSCH resources.
If the transmission power control information carried in straight-through link is assigned is (referred to as：TPC it is) 0, then PSSCH is in correspondence The transmit power of frame is (referred to as：PPSSCH) be：
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH}
If the transmission power control information carried in straight-through link is assigned is (referred to as：TPC it is) 1, then PSSCH is in correspondence The transmit power of frame is：
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH,10log10(MPSSCH)+PO_PSSCH,1+αPSSCH,1·PLC}[dBm]
Wherein：PCMAX,PSSCHRepresent D2D terminal emission maximum PSSCH channel powers, MPSSCHTransmission PSSCH is distributed in expression The bandwidth of resource；PO_PSSCH,1And αPSSCH,1Configuration information from cell base station, PLCThen represent between terminal and cell base station Path loss.
Step 8：2nd D2D terminals obtain P using calculatingPSSS, PSSSS, PPSDCH, PPSCCH, PPSSCHPerformance number correspondence physics letter Number transmitting.Such as 10 steps in Fig. 3.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical Cross above preferred embodiment the present invention is described in detail, it is to be understood by those skilled in the art that can be Various changes are made to it in form and in details, without departing from claims of the present invention limited range.

Claims (2)

1. a kind of D2D terminal transmitted power control methods lost in covering scene, it is characterised in that：This method includes following step Suddenly：
S1：First D2D terminals determine that sending physics leads directly to the power that link broadcast channel PSBCH needs, and is designated as P firstPSBCH, so Afterwards by PPSBCH, physical layer leads directly to CCCH PSCCH and physical layer and leads directly to shared channel PSSCH and expect to receive the letter of minimum Number performance number, is designated as PPSCCH_rxLevMinAnd PPSSCH_rxLevMin, and be encoded in PSBCH data blocks；
S2：First D2D terminals send straight-through link synchronisation channel SLSS and PSBCH on fixed running time-frequency resource, wherein PSBCH physical channels use PPSBCHPower is sent；2nd D2D terminals carry out SLSS synchronizations to the first D2D terminals first, then survey PSBCH physical channel powers are measured, R is designated asPSBCH；2nd D2D terminals are according to PPSBCHAnd RPSBCHPower meter calculates two D2D terminals Between path loss PLD；
S3：The parsing of 2nd D2D terminals receives the data block that the first D2D terminals send PSBCH physical channels, obtains the first D2D whole Expect the minimum PSCCH and PSSCH channel powers P received in endPSCCH_rxLevMinAnd PPSSCH_rxLevMinParameter；
S4：2nd D2D terminals calculate PPSCCHAnd PPSSCHTransmission power；
S5：2nd D2D terminals use PPSCCHAnd PPSSCHTransmission power sends the data on PSCCH and PSSCH channels.
2. a kind of D2D terminal transmitted power control methods lost in covering scene according to claim 1, its feature exists In：The step S4 is specifically included：
S401：Physics is led directly into CCCH PSCCH physical channel transmitting powers to be defined as
PD2D_PSCCH=10log (MPSCCH)+PPSCCH_RxLevMin+PLD
Wherein, PPSCCH_RxLevMinRepresent that D2D terminals receive PSCCH physical channel minimal power requirements, PLDRepresent two D2D ends Path loss, M are wirelessly transferred between endPSCCHRepresent to distribute to the bandwidth for transmitting PSCCH resources；
If the transmission power control information TPC carried in straight-through link is assigned is transmission work(of 0, the PSCCH in correspondence frame Rate PPSCCHFor：
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH}
If the transmission power control information TPC carried in straight-through link is assigned is transmission work(of 1, the PSCCH in correspondence frame Rate PPSCCHFor：
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH,10log10(MPSCCH)+PO_PSCCH,1+αPSCCH,1·PLC}[dBm]
Wherein, PCMAX,PSCCHRepresent D2D terminal PSCCH channel maximum transmission power, MPSCCHTransmission PSCCH resources are distributed in expression Bandwidth；PO_PSCCH,1And αPSCCH,1Configuration information from cell base station, PLCThen represent the road between terminal and cell base station Damage；
S402：Physics is led directly into shared channel PSSCH physical channel transmitting powers to be defined as
PD2D_PSSCH=10log (MPSSCH)+PPSSCH_RxLevMin+PLD
Wherein, PPSSCH_RxLevMinRepresent that D2D terminals receive PSSCH physical channel minimal power requirements, PLDRepresent two D2D ends Path loss, M are wirelessly transferred between endPSSCHRepresent to distribute to the bandwidth for transmitting PSSCH resources；
If the transmission power control information TPC carried in straight-through link is assigned is transmission work(of 0, the PSSCH in correspondence frame Rate PPSSCHFor：
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH}
If the transmission power control information TPC carried in straight-through link is assigned is transmission work(of 1, the PSSCH in correspondence frame Rate PPSSCHFor：
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH,10log10(MPSSCH)+PO_PSSCH,1+αPSSCH,1·PLC}[dBm]
Wherein：PCMAX,PSSCHRepresent D2D terminal emission maximum PSSCH channel powers, MPSSCHTransmission PSSCH resources are distributed in expression Bandwidth；PO_PSSCH,1And αPSSCH,1Configuration information from cell base station, PLCThen represent the road between terminal and cell base station Damage.
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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109644436A (en) * 2018-03-20 2019-04-16 Oppo广东移动通信有限公司 The method and terminal device of resource-sharing
WO2019157997A1 (en) * 2018-02-13 2019-08-22 华为技术有限公司 Communication method and device
CN110768771A (en) * 2018-07-27 2020-02-07 维沃移动通信有限公司 Synchronous signal transmission method and terminal
WO2020056638A1 (en) * 2018-09-19 2020-03-26 Nec Corporation Method, apparatus and computer readable media for power control in a wireless communication system
CN111148205A (en) * 2018-11-02 2020-05-12 华为技术有限公司 Method and device for determining transmission power
CN111246450A (en) * 2020-01-10 2020-06-05 四川豪威尔信息科技有限公司 5G mobile terminal coverage loss processing method
WO2020119598A1 (en) * 2018-12-13 2020-06-18 索尼公司 Electronic device, wireless communication method, and computer readable medium
WO2020143835A1 (en) * 2019-01-11 2020-07-16 华为技术有限公司 Power control method and power control apparatus
CN111492695A (en) * 2018-02-01 2020-08-04 Oppo广东移动通信有限公司 User equipment and wireless communication method thereof
CN111865482A (en) * 2019-04-30 2020-10-30 华为技术有限公司 Communication method and device
WO2021027545A1 (en) * 2019-08-09 2021-02-18 维沃移动通信有限公司 Power control method and device
CN112672410A (en) * 2020-12-21 2021-04-16 紫光展锐(重庆)科技有限公司 Communication method, device, equipment and system
CN112703782A (en) * 2018-07-11 2021-04-23 三星电子株式会社 Method and apparatus for multi-antenna transmission in vehicle-to-vehicle communication
CN113784428A (en) * 2019-02-15 2021-12-10 Oppo广东移动通信有限公司 Method and apparatus for wireless communication
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CN114696935A (en) * 2020-12-30 2022-07-01 大唐高鸿智联科技(重庆)有限公司 Synchronization method, synchronization device and terminal equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106375930A (en) * 2015-07-22 2017-02-01 中兴通讯股份有限公司 Device-to-device (D2D) communication method and apparatus
CN106416388A (en) * 2014-08-07 2017-02-15 太阳专利信托公司 Power control method and user equipment in device-to-device communication in serving cell
CN106465285A (en) * 2014-05-09 2017-02-22 创新技术实验室株式会社 Method and apparatus for controlling transmission power in wireless communication system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106465285A (en) * 2014-05-09 2017-02-22 创新技术实验室株式会社 Method and apparatus for controlling transmission power in wireless communication system
CN106416388A (en) * 2014-08-07 2017-02-15 太阳专利信托公司 Power control method and user equipment in device-to-device communication in serving cell
CN106375930A (en) * 2015-07-22 2017-02-01 中兴通讯股份有限公司 Device-to-device (D2D) communication method and apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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US11818669B2 (en) 2018-09-19 2023-11-14 Nec Corporation Method, apparatus and computer readable media for power control in a wireless communication system
WO2020056638A1 (en) * 2018-09-19 2020-03-26 Nec Corporation Method, apparatus and computer readable media for power control in a wireless communication system
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WO2020119598A1 (en) * 2018-12-13 2020-06-18 索尼公司 Electronic device, wireless communication method, and computer readable medium
WO2020143835A1 (en) * 2019-01-11 2020-07-16 华为技术有限公司 Power control method and power control apparatus
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US11856393B2 (en) 2019-01-11 2023-12-26 Huawei Technologies Co., Ltd. Power control method and power control apparatus
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EP3890409B1 (en) * 2019-01-11 2024-05-01 Huawei Technologies Co., Ltd. Power control method and power control apparatus
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US11425660B2 (en) 2019-02-15 2022-08-23 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Method and apparatus for dermining transmission power for sidelink channel
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