CN107018564B - A kind of D2D terminal transmitted power control method in loss covering scene - Google Patents
A kind of D2D terminal transmitted power control method in loss covering scene Download PDFInfo
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- CN107018564B CN107018564B CN201710404833.8A CN201710404833A CN107018564B CN 107018564 B CN107018564 B CN 107018564B CN 201710404833 A CN201710404833 A CN 201710404833A CN 107018564 B CN107018564 B CN 107018564B
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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
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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
- H04W52/30—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
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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
- H04W52/38—TPC being performed in particular situations
- H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/001—Synchronization between nodes
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Abstract
The present invention relates to the D2D terminal transmitted power control methods in a kind of loss covering scene, belong to mobile communication field.This method meet D2D terminal send signal it is jamproof to cell base station under the conditions of, main straight-through link synchronization signal PSSS, auxiliary straight-through link synchronization signal SSSS and the straight-through discovery channel PSDCH of physics are sent using maximum power, but physics leads directly to common control channel PSCCH and the straight-through shared channel PSSCH of physics is then sent using the minimum power for meeting D2D terminal direct connection communicating requirement.Present invention preserves the existing transmitted power control method of SLSS/PSBCH and PSDCH physical channel, guarantee that D2D terminal by other D2D terminal searchings and can interpret relevant information；Not only two D2D terminal normal communication requirements ensure that, but also reduced the interference that D2D leads directly to link pair cell base station；The output of D2D power consumption of terminal is saved, is conducive to improve D2D end-user experience.
Description
Technical field
The invention belongs to mobile communication system fields, are related to a kind of D2D terminal transmission power control lost in covering scene
Method processed.
Background technique
With the continuous development of the communication technology, next generation mobile communication system --- Advanced International Mobile Communications
It uses and carries in (International MobileTelecommunications-Advanced, IMT-Advanced) system
Wave polymerize the multiple-input, multiple-output (Multiple-InputMultiple- of (Carrier Aggregation, CA) technology, enhancing
Output, MIMO) antenna technology, collaboration multicast communication (CoordinatedMultiplePoints, CoMP) technology and relaying skill
Art further improves power system capacity on the basis of original cell mobile communication systems, improves the number of Cell Edge User
According to rate and user experience.However, MPS process and business presentation mode sheet due to cellular communication system centered on base station
Limitation present in body, IMT-Advanced system the problem of there are still covering and capacity etc., research shows that terminal is straight
It is logical that ((Device-to-Device Communication, D2D) technology is saving resource, reduces interference and is promoting efficiency of transmission
Etc. various aspects have a huge advantage, but also need to carefully study and optimize at many aspects.
In the prior art, the resource allocation of D2D user is mainly the resource allocation used under multiplexer mode.Multiplexer mode is again
It is divided into multiplexing downlink resource and multiplexing ascending resource.When the ascending resource of D2D link reuse pattern terminal, present in system
Interference is that the transmitting terminal of interference and D2D caused by phone user's transmitting terminal receives signal the receiving end D2D normally connects base station
The interference of the collection of letters number.When D2D link reuse pattern user equipment downlink resource, interference present in cell includes D2D transmitting terminal pair
The interference of this cell CUE bring and transmission end of base station receive the receiving end D2D 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 the interference of system, most
The power of smallization system maximizes availability of frequency spectrum etc., but D2D terminal transmission power is bigger also bigger to area interference.
In D2D system, straight-through link physical channel has straight-through link synchronisation channel (referred to as: SLSS), and physical layer is straight-through
Common control channel (referred to as: PSCCH), the straight-through shared channel (referred to as: PSSCH) of physical layer and the straight-through discovery channel of physical layer
(referred to as: PSDCH).So in D2D system, research D2D terminal area interference is mainly studied SLSS, PSCCH, PSSCH and
PSDCH physical layer to cell base station interference, so in practical projects, need to send D2D terminal SLSS, PSCCH,
PSSCH and PSDCH physical channel power is controlled.
In current third generation partner program (referred to as: 3GPP), according to 3GPP technical specification LTE-Advanced's
Physical layer procedure specification (referred to as: TS36.213) description.To cell base station when in order to reduce D2D terminal progress direct communication
It influencing, the various physical channel transmitting powers for sending straight-through chain road for D2D terminal provide, it is defined as follows:
It is as follows that the straight-through shared channel (referred to as: PSSCH) of terminals physical sends power:
If the transmission power control information (referred to as: TPC) carried in straight-through link is assigned is 0, PSSCH in correspondence
The transmission power of frame is (referred to as: PPSSCH) are as follows:
PPSSCH=PCMAX,PSSCH
If the transmission power control information (referred to as: TPC) carried in straight-through link is assigned is 1, PSSCH in correspondence
The transmission power of frame are as follows:
PPSSCH=min { PCMAX,PSSCH,10log10(MPSSCH)+PO_PSSCH,1+αPSSCH,1·PL}[dBm]
Wherein: PCMAX,PSSCHIndicate D2D terminal emission maximum PSSCH channel power, MPSSCHTransmission is distributed in expression
The bandwidth of PSSCH resource；PO_PSSCH,1And αPSSCH,1Configuration information from cell base station, PL then indicate terminal and
Path loss between cell base station.
The description of TS36.213 is referred to as a same reason, and available physics leads directly to control channel (referred to as: PSCCH) in correspondence
The transmission power of frame are as follows:
If the transmission power control information (referred to as: TPC) carried in straight-through link is assigned is 0, PSCCH in correspondence
The transmission power of frame is (referred to as: PPSCCH) are as follows:
PPSCCH=PCMAX,PSCCH
If the transmission power control information (referred to as: TPC) carried in straight-through link is assigned is 1, PSCCH in correspondence
The transmission power of frame are as follows:
PPSCCH=min { PCMAX,PSCCH,10log10(MPSCCH)+PO_PSCCH,1+αPSCCH,1·PL}[dBm]
Wherein: PCMAX,PSCCHIndicate D2D terminal emission maximum PSCCH channel power, MPSCCHTransmission PSCCH is distributed in expression
The bandwidth of resource；PO_PSCCH,1And αPSCCH,1Configuration information from cell base station, PL are then indicated between terminal and cell base station
Path loss.
The description of TS36.213 is referred to as a same reason, and the straight-through discovery channel of available physics (referred to as: PSDCH) is 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,PSDCHIndicate D2D terminal emission maximum PSDCH channel power, MPSDCHTransmission PSDCH is distributed in expression
The bandwidth of resource；PO_PSDCH,1And αPSDCH,1Configuration information from cell base station, PL are then indicated between terminal and cell base station
Path loss.
The description for referring to TS36.213 as a same reason, since SLSS is made of two physical channels, i.e., main straight-through link
Synchronizing channel (referred to as: PSSS) and auxiliary straight-through link synchronisation channel (referred to as: SSSS), distribution gives two in TS36.213
The transmission power of synchronizing channel:
If leading directly to the transmission power control information (referred to as: TPC) carried in link appointment in PSCCH is 0, 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,PSBCHIndicate D2D terminal emission maximum PSBCH channel power, PCMAX,SSSSIndicate that D2D terminal is maximum
Emit SSSS channel power, MPSSSIt indicates to distribute to the bandwidth for transmitting PSSS resource；PO_PSSSAnd αPSSSMatching from cell base station
Confidence breath, PL then indicate the path loss between terminal and cell base station.
From the equations above as can be seen that D2D sends the straight-through physical channel of various D2D in D2D system, it is desirable that in cell
In base station interference limitation range, D2D terminal will be sent using maximum power.
But in actual D2D usage scenario, there are certain difference, D2D communications for the terminal distance of two D2D communication
Terminal standoff distance is not fixed, although D2D, which leads directly to physical channel and interferes cell base station to control to meet, can tolerate model
In enclosing, but this interference is existing always.In addition the power consumption of D2D directintermination and the linear increasing of physical channel transmitting power
Add, at a distance of lesser D2D terminal, if transmission power is excessive also to will affect D2D terminal receptivity, it is therefore necessary to allow
D2D terminal can be sent under the conditions of meeting cell base station disturbance range using the non-maximum power of physical layer channel.
Summary of the invention
In view of this, the purpose of the present invention is to provide the D2D terminals in a kind of loss covering scene to send power control
Method, this method is under conditions of meeting D2D terminal transmission signal to cell base station interference, main straight-through link synchronization signal (letter
Claim: PSSS), auxiliary straight-through link synchronization signal (referred to as: SSSS) and the straight-through discovery channel of physics (referred to as: PSDCH) be using maximum
Power is sent, but physics leads directly to common control channel (referred to as: PSCCH) and the straight-through shared channel (referred to as: PSSCH) of physics then
It is sent using the minimum power for meeting D2D terminal direct connection communicating requirement, reduces the interference that D2D leads directly to link pair cell base station,
Be conducive to improve D2D end-user experience.
In order to achieve the above objectives, the invention provides the following technical scheme:
A kind of D2D terminal transmitted power control method in loss covering scene, comprising the following steps:
S1: the one D2D terminal determines first sends the power that PSBCH physical channel needs, and is denoted as PPSBCHThen value will
PPSBCH, expectation receive minimum PSCCH and PSSCH signal power value, be denoted as PPSCCH_rxLevMinAnd PPSSCH_rxLevMinIt is encoded to
In PSBCH data block；
S2: the one D2D terminal sends SLSS and PSBCH on fixed running time-frequency resource, and wherein PSBCH physical channel is adopted
Use PPSBCHPower is sent；2nd D2D terminal carries out SLSS to the first D2D terminal first and synchronizes, and then measures PSBCH physical channel
Power is denoted as RPSBCH；2nd D2D terminal is according to PPSBCHAnd RPSBCHPower meter calculates the path loss PL between two D2D terminalsD；
The parsing of S3: the two D2D terminal receives the data block that the first D2D terminal sends PSBCH physical channel, obtains first
D2D terminal it is expected the minimum PSCCH and PSSCH channel power P receivedPSCCH_rxLevMinAnd PPSSCH_rxLevMinParameter；
S4: the two D2D terminal calculates PPSCCHAnd PPSSCHTransmission power；
S5: the two D2D terminal uses PPSCCHAnd PPSSCHTransmission power sends the data on PSCCH and PSSCH channel.
Further, the step S4 specifically includes the following steps:
S401: physics is led directly into common control channel PSCCH physical channel transmitting power and is defined as
PD2D_PSCCH=10log (MPSCCH)+PPSCCH_RxLevMin+PLD
Wherein, PPSCCH_RxLevMinIndicate that D2D terminal receives PSCCH physical channel minimal power requirements, PLDIndicate two
Path loss, M are wirelessly transferred between D2D terminalPSCCHIt indicates to distribute to the bandwidth for transmitting PSCCH resource.
If the transmission power control information TPC carried in straight-through link is assigned is hair of 0, the PSCCH in corresponding frame
Send power PPSCCHAre as follows:
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH}
If the transmission power control information TPC carried in straight-through link is assigned is hair of 1, the PSCCH in corresponding frame
Send power PPSCCHAre as follows:
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH,10log10(MPSCCH)+PO_PSCCH,1+αPSCCH,1·PLC}[dBm]
Wherein, PCMAX,PSCCHIndicate D2D terminal PSCCH channel maximum transmission power, MPSCCHShow and distributes to transmission PSCCH money
The bandwidth in source；PO_PSCCH,1And αPSCCH,1Configuration information from cell base station, PLCThen indicate the road between terminal and cell base station
Damage.
S402: the straight-through shared channel PSSCH physical channel transmitting power of physics is defined as
PD2D_PSSCH=10log (MPSSCH)+PPSSCH_RxLevMin+PLD
Wherein, PPSSCH_RxLevMinIndicate that D2D terminal receives PSSCH physical channel minimal power requirements, PLDIndicate two
Path loss, M are wirelessly transferred between D2D terminalPSSCHIt indicates to distribute to the bandwidth for transmitting PSSCH resource.
If the transmission power control information TPC carried in straight-through link is assigned is hair of 0, the PSSCH in corresponding frame
Send power PPSSCHAre as follows:
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH}
If the transmission power control information TPC carried in straight-through link is assigned is hair of 1, the PSSCH in corresponding frame
Send power PPSSCHAre as follows:
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH,10log10(MPSSCH)+PO_PSSCH,1+αPSSCH,1·PLC}[dBm]
Wherein: PCMAX,PSSCHIndicate D2D terminal emission maximum PSSCH channel power, MPSSCHTransmission PSSCH is distributed in expression
The bandwidth of resource；PO_PSSCH,1And αPSSCH,1Configuration information from cell base station, PLCThen indicate 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 methods of SLSS/PSBCH and PSDCH physical channel, guarantee
D2D terminal by other D2D terminal searchings and can interpret relevant information.
(2) present invention limits the power of PSCCH and PSSCH physical channel, can either guarantee two D2D terminals just
Normal communicating requirement, while the interference that D2D leads directly to link pair cell base station is reduced again.
(3) transmission power of the present invention due to reducing PSCCH and PSSCH physical channel, it is defeated to save D2D power consumption of terminal
Out, be conducive to improve D2D end-user experience.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is that D2D terminal determines PSCCH and PSSCH physical channel transmitting power flow chart；
Fig. 2 communication structure figure between D2D in D2D system；
Fig. 3 is that D2D terminal generates straight-through physical link transmission power flow chart.
Specific embodiment
Below in conjunction with attached drawing, a preferred embodiment of the present invention will be described in detail.
As shown in Figure 1, the present invention specifically includes the following steps:
S1: the one D2D terminal determines first sends the power that PSBCH physical channel needs, and is denoted as PPSBCHThen value will
PPSBCH, expectation receive minimum PSCCH and PSSCH signal power value, be denoted as PPSCCH_rxLevMinAnd PPSSCH_rxLevMinIt is encoded to
In PSBCH data block.1,2 step as shown in figure 1.
S2: the one D2D terminal sends SLSS and PSBCH on fixed running time-frequency resource, and wherein PSBCH physical channel is adopted
Use PPSBCHPower is sent；2nd D2D terminal carries out SLSS to the first D2D terminal first and synchronizes, and then measures PSBCH physical channel
Power is denoted as RPSBCH；2nd D2D terminal is according to PPSBCHAnd RPSBCHPower meter calculates the path loss PL between two D2D terminalsD.Such as
3,4 step in Fig. 1.
The parsing of S3: the two D2D terminal receives the data block that the first D2D terminal sends PSBCH physical channel, and parsing obtains the
One D2D terminal it is expected the minimum PSCCH and PSSCH channel power P receivedPSCCH_rxLevMinAnd PPSSCH_rxLevMinParameter.Such as Fig. 1
In 5 steps.
S4: the two D2D terminal calculates PPSCCHAnd PPSSCHTransmission power.6 step as shown in figure 1.
S5: the two D2D terminal uses PPSCCHAnd PPSSCHTransmission power sends the data on PSCCH and PSSCH channel.Such as
7 step in Fig. 1.
The present invention D2D terminal control PSCCH and PSSCH physical channel transmitting power specific implementation flow, such as Fig. 1 institute
Show, there are the first D2D terminal and the 2nd D2D terminals in D2D system.It can be just between first D2D terminal and the 2nd D2D terminal
Normal open letter.In embodiment, also support the first D2D terminal and the 2nd D2D terminal be in cell base station signals coverage area it is interior or
Outside coverage area.
In this embodiment, it is first assumed that the first D2D terminal is in transmission state, and the 2nd D2D terminal is in reception state,
Otherwise processing is also identical.
2nd D2D terminal control physical channel sends power method, specific as shown in Figure 3:
Step 1: the 2nd D2D terminal and the first D2D terminal carry out it is straight-through before, the 2nd D2D terminal detects the first D2D first
The SLSS signal that terminal is sent, and interpret the broadcast channel information of straight-through chain road PSBCH.Such as 1 step in Fig. 3.
Step 2: the system message broadcasted according to straight-through chain road PSBCH parses first terminal PSBCH physical channel hair
Power is sent, P is denoted asPSBCH.Then the 2nd D2D terminal will measure the signal power of the first D2D terminal transmission PSBCH, be denoted as
RPSBCH.The two differences are exactly the path loss that PSBCH physical channel transmits in the sky, are denoted as PLD=PPSBCH-RPSBCH.In Fig. 3
2,3,4 steps.
Further describe, according in 3GPP about LTE-Advanced radio resource control (referred to as:
TS36.331 definition) is about PSBCH system message content are as follows:
Wherein, sl_Bandwidth indicates straight-through link bandwidth；Tdd_ConfigSL indicates straight-through link using TDD still
Fdd mode；DirectFrameNumber indicates that straight-through chain road carries the frame number of the PSBCH data block；
DirectSubframeNumber indicates that straight-through chain road carries the subframe numbers of the PSBCH data block.InCoverage is then indicated
Whether the D2D terminal for sending PSBCH is in cell base station coverage area.Reserved belongs to reserved field, indicates the following extension
It uses, amounts to 19 bit lengths.
In the present embodiment, 19 bits are divided into three parts, respectively carry PSBCH physical layer channel send power,
PSCCH and PSSCH minimum received signal power.
PSBCH is encoded in this embodiment, and amounting to 7 bits indicates, unit dbm is specifically defined are as follows:
psbchSignalPower INTEGER(-60..30)
Minimum PSCCH received signal power PPSCCH_rxLevMinCoding, amounting to 6 bits indicates, unit dbm is specifically defined
Are as follows:
pscch_rxLevMin_Power INTEGER(-70..-22)
Minimum PSSCH received signal power PPSSCH_rxLevMinCoding, amounting to 6 bits indicates, unit dbm is specifically defined
Are as follows:
pssch_rxLevMin_Power INTEGER(-70..-22)
So in embodiments of the present invention, D2D terminal system information block is defined as:
Step 3: the 2nd D2D terminal parses the first D2D terminal from PSBCH physical channel and receives PSCCH and PSSCH object
Manage the minimum power P that channel needsPSCCH_rxLevMinAnd PPSSCH_rxLevMinValue.Such as 5 steps in Fig. 3.
Step 4: the 2nd D2D terminal calculates P according to the requirement of 3GPP TS36.213D2D_PSSSAnd PD2D_SSSSEmit function
Rate value.Such as 6 steps in Fig. 3.Circular is as follows:
If leading directly to the transmission power control information (referred to as: TPC) carried in link appointment in PSCCH is 0, 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,PSBCHIndicate D2D terminal emission maximum PSBCH channel power, PCMAX,SSSSIndicate that D2D terminal is maximum
Emit SSSS channel power, MPSSSIt indicates to distribute to the bandwidth for transmitting PSSS resource；PO_PSSSAnd αPSSSMatching from cell base station
Confidence breath, PLCThen indicate the path loss between terminal and cell base station.
Step 5: the 2nd D2D terminal calculates P according to the requirement of 3GPPTS36.213D2D_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,PSDCHIndicate D2D terminal emission maximum PSDCH channel power, MPSDCHTransmission PSDCH is distributed in expression
The bandwidth of resource；PO_PSDCH,1And αPSDCH,1Configuration information from cell base station, PLCThen indicate between terminal and cell base station
Path loss.
Step 6: mode calculates P according to the present inventionPSCCHTransmission power level, such as 8 steps in Fig. 2, calculating P thereinPSCCHTool
Body is as follows:
PD2D_PSCCH=10log (MPSCCH)+PPSCCH_RxLevMin+PLD
Wherein, PPSCCH_rxLevMinIndicate that D2D terminal receives PSCCH physical channel minimal power requirements, PLDIndicate two
Path loss, M are wirelessly transferred between D2D terminalPSCCHIt indicates to distribute to the bandwidth for transmitting PSCCH resource.
If the transmission power control information (referred to as: TPC) carried in straight-through link is assigned is 0, PSCCH in correspondence
The transmission power of frame is (referred to as: PPSCCH) are as follows:
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH}
If the transmission power control information (referred to as: TPC) carried in straight-through link is assigned is 1, PSCCH in correspondence
The transmission power of frame are as follows:
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH,10log10(MPSCCH)+PO_PSCCH,1+αPSCCH,1·PLC}[dBm]
Wherein: PCMAX,PSCCHIndicate D2D terminal emission maximum PSCCH channel power, MPSCCHTransmission PSCCH is distributed in expression
The bandwidth of resource；PO_PSCCH,1And αPSCCH,1Configuration information from cell base station, PLCThen indicate between terminal and cell base station
Path loss.
Step 7: mode calculates P according to the present inventionPSSCHTransmission power level, such as 9 steps in Fig. 3, wherein calculating PPSSCHSpecifically
It is as follows:
PD2D_PSSCH=10log (MPSSCH)+PPSSCH_RxLevMin+PLD
Wherein, PPSSCH_RxLevMinIndicate that D2D terminal receives PSSCH physical channel minimal power requirements, PLDIndicate two
Path loss, M are wirelessly transferred between D2D terminalPSSCHIt indicates to distribute to the bandwidth for transmitting PSSCH resource.
If the transmission power control information (referred to as: TPC) carried in straight-through link is assigned is 0, PSSCH in correspondence
The transmission power of frame is (referred to as: PPSSCH) are as follows:
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH}
If the transmission power control information (referred to as: TPC) carried in straight-through link is assigned is 1, PSSCH in correspondence
The transmission power of frame are as follows:
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH,10log10(MPSSCH)+PO_PSSCH,1+αPSSCH,1·PLC}[dBm]
Wherein: PCMAX,PSSCHIndicate D2D terminal emission maximum PSSCH channel power, MPSSCHTransmission PSSCH is distributed in expression
The bandwidth of resource；PO_PSSCH,1And αPSSCH,1Configuration information from cell base station, PLCThen indicate between terminal and cell base station
Path loss.
Step 8: P is calculated in the 2nd D2D terminal usePSSS, PSSSS, PPSDCH, PPSCCH, PPSSCHPerformance number corresponds to physics letter
Number transmitting.Such as 10 steps in Fig. 3.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand 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 (1)
1. a kind of D2D terminal transmitted power control method lost in covering scene, it is characterised in that: this method includes following step
It is rapid:
S1: the one D2D terminal determines that sending physics leads directly to the power that link broadcast channel PSBCH needs, and is denoted as P firstPSBCH, so
Afterwards by PPSBCH, physical layer leads directly to the straight-through shared channel PSSCH expectation of common control channel PSCCH and physical layer and receives the smallest letter
Number performance number, is denoted as PPSCCH_rxLevMinAnd PPSSCH_rxLevMin, and be encoded in PSBCH data block；
S2: the one D2D terminal sends straight-through link synchronisation channel SLSS and PSBCH on fixed running time-frequency resource, wherein
PSBCH physical channel uses PPSBCHPower is sent；2nd D2D terminal carries out SLSS to the first D2D terminal first and synchronizes, and then surveys
PSBCH physical channel power is measured, R is denoted asPSBCH；2nd D2D terminal is according to PPSBCHAnd RPSBCHPower meter calculates two D2D terminals
Between path loss PLD；
The parsing of S3: the two D2D terminal receives the data block that the first D2D terminal sends PSBCH physical channel, obtains the first D2D end
The minimum PSCCH and PSSCH channel power P that end expectation receivesPSCCH_rxLevMinAnd PPSSCH_rxLevMinParameter；
S4: the two D2D terminal calculates PPSCCHAnd PPSSCHTransmission power；
S5: the two D2D terminal uses PPSCCHAnd PPSSCHTransmission power sends the data on PSCCH and PSSCH channel；
The step S4 is specifically included:
S401: physics is led directly into common control channel PSCCH physical channel transmitting power and is defined as
PD2D_PSCCH=10log (MPSCCH)+PPSCCH_RxLevMin+PLD
Wherein, PPSCCH_RxLevMinIndicate that D2D terminal receives PSCCH physical channel minimal power requirements, PLDIndicate two D2D ends
Path loss, M are wirelessly transferred between endPSCCHIt indicates to distribute to the bandwidth for transmitting PSCCH resource；
If the transmission power control information TPC carried in straight-through link is assigned is transmission function of 0, the PSCCH in corresponding frame
Rate PPSCCHAre as follows:
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH}
If the transmission power control information TPC carried in straight-through link is assigned is transmission function of 1, the PSCCH in corresponding frame
Rate PPSCCHAre as follows:
PPSCCH=min { PCMAX,PSCCH,PD2D_PSCCH,10log10(MPSCCH)+PO_PSCCH,1+αPSCCH,1·PLC}[dBm]
Wherein, PCMAX,PSCCHIndicate D2D terminal PSCCH channel maximum transmission power, MPSCCHTransmission PSCCH resource is distributed in expression
Bandwidth；PO_PSCCH,1And αPSCCH,1Configuration information from cell base station, PLCThen indicate the road between terminal and cell base station
Damage；
S402: the straight-through shared channel PSSCH physical channel transmitting power of physics is defined as
PD2D_PSSCH=10log (MPSSCH)+PPSSCH_RxLevMin+PLD
Wherein, PPSSCH_RxLevMinIndicate that D2D terminal receives PSSCH physical channel minimal power requirements, PLDIndicate two D2D ends
Path loss, M are wirelessly transferred between endPSSCHIt indicates to distribute to the bandwidth for transmitting PSSCH resource；
If the transmission power control information TPC carried in straight-through link is assigned is transmission function of 0, the PSSCH in corresponding frame
Rate PPSSCHAre as follows:
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH}
If the transmission power control information TPC carried in straight-through link is assigned is transmission function of 1, the PSSCH in corresponding frame
Rate PPSSCHAre as follows:
PPSSCH=min { PCMAX,PSSCH,PD2D_PSSCH,10log10(MPSSCH)+PO_PSSCH,1+αPSSCH,1·PLC}[dBm]
Wherein: PCMAX,PSSCHIndicate D2D terminal emission maximum PSSCH channel power, MPSSCHIt indicates to distribute to transmission PSSCH resource
Bandwidth；PO_PSSCH,1And αPSSCH,1Configuration information from cell base station, PLCThen indicate the path loss between terminal and cell base station.
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| CN111492695B (en) * | 2018-02-01 | 2023-07-25 | Oppo广东移动通信有限公司 | User equipment and wireless communication method thereof |
| CN110167127B (en) * | 2018-02-13 | 2021-02-12 | 华为技术有限公司 | Communication method and device |
| WO2019178749A1 (en) * | 2018-03-20 | 2019-09-26 | Oppo广东移动通信有限公司 | Resource sharing method and terminal device |
| US10863447B2 (en) * | 2018-07-11 | 2020-12-08 | Samsung Electronics Co., Ltd. | Method and apparatus for multi-antenna transmission in vehicle to vehicle communication |
| CN110768771B (en) * | 2018-07-27 | 2021-07-27 | 维沃移动通信有限公司 | Synchronous signal transmission method and terminal |
| EP3854150A4 (en) | 2018-09-19 | 2021-10-13 | NEC Corporation | Method, apparatus and computer readable media for power control in a wireless communication system |
| CN111148205B (en) * | 2018-11-02 | 2022-03-25 | 华为技术有限公司 | Method and device for determining transmission power |
| CN111327408A (en) * | 2018-12-13 | 2020-06-23 | 索尼公司 | Electronic device, wireless communication method, and computer-readable medium |
| CN114845370B (en) * | 2019-01-11 | 2024-05-14 | 华为技术有限公司 | Power control method and power control device |
| JP7361126B2 (en) * | 2019-02-15 | 2023-10-13 | オッポ広東移動通信有限公司 | Wireless communication methods and devices |
| CN111865482A (en) * | 2019-04-30 | 2020-10-30 | 华为技术有限公司 | Communication method and device |
| CN114145052A (en) * | 2019-08-06 | 2022-03-04 | 华为技术有限公司 | Apparatus and method for sidelink power control in a wireless communication system |
| CN111800849B (en) * | 2019-08-09 | 2022-06-10 | 维沃移动通信有限公司 | Power control method and equipment |
| CN111246450B (en) * | 2020-01-10 | 2023-03-31 | 四川豪威尔信息科技有限公司 | 5G mobile terminal coverage loss processing method |
| CN112672410B (en) * | 2020-12-21 | 2023-03-07 | 紫光展锐(重庆)科技有限公司 | Communication method, device, equipment and system |
Citations (3)
| 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 |
-
2017
- 2017-06-01 CN CN201710404833.8A patent/CN107018564B/en active Active
Patent Citations (3)
| 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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