CN107690157A - A kind of method and device of reporting power margin - Google Patents

A kind of method and device of reporting power margin Download PDF

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Publication number
CN107690157A
CN107690157A CN201610634007.8A CN201610634007A CN107690157A CN 107690157 A CN107690157 A CN 107690157A CN 201610634007 A CN201610634007 A CN 201610634007A CN 107690157 A CN107690157 A CN 107690157A
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China
Prior art keywords
srs
tpc
cells
mpr
base station
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Chinese (zh)
Inventor
周欢
孙鹏
许瑞锋
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Beijing Xinwei Telecom Technology Inc
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Beijing Xinwei Telecom Technology Inc
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Priority to CN201610634007.8A priority Critical patent/CN107690157A/en
Publication of CN107690157A publication Critical patent/CN107690157A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/365—Power headroom reporting

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

Abstract

The invention discloses a kind of method and device of reporting power margin.This method includes：SRS cells obtain calculating parameter, and the SRS cells are not send out the uplink cells that PUSCH only sends out SRS；The SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, and report the PHR after calculating, it would be preferable to support UE carries out PHR in SRS cells and reported.

Description

A kind of method and device of reporting power margin
Technical field
The present embodiments relate to the technical field of communication, more particularly to a kind of method and device of reporting power margin.
Background technology
In Long Term Evolution (Long Term Evolution, LTE) network, many is arranged net in scene due to downlink business More than uplink service, the descending carrier quantity then configured exceedes up-link carrier quantity.Existing mobile terminal (User Equimpment, UE) typical UE abilities only support one or two up-link carrier in species.Time division duplex (Time Division Duplexing, TDD) exploitable channel reciprocity in LTE, downlink channel condition is obtained, i.e. eNB receives UE and sent Detection reference signal (Sounding Reference Signal, SRS), obtain up and downlink channel condition, with reference to this letter Breath carries out descending scheduling.When descending carrier number is more than up-link carrier, such as mobile terminal configuration, 2 descending+1 is up, now, base 1 descending channel condition information can only be obtained by 1 up sent out SRS by standing, and can not be obtained by channel reciprocity another The channel condition information of descending carrier.
Research topic RP-160676, " New WI proposal are set up in 3GPP RAN71:SRS Carrier Based Switching for LTE ", study when descending carrier number is more than up-link carrier number, Physical Downlink Shared Channel can sent out (Physical Downlink Shared Channel, PDSCH) and Physical Uplink Shared Channel (Physical can not be sent out SRS is only sent out in Uplink Shared Channel, PUSCH cell, the SRS passed through between TDD cell switches, and preferably utilizes Channel reciprocity, improve the downlink system performance of TDD system.
In LTE system uplink power control mechanism, power headroom reporting (Power of the terminal to base station repeats Headroom Report, PHR) it is used to reflect the maximum difference sent out between work(and used uplink transmission power of terminal, it is easy to Base station carries out uplink transmission power control and link circuit self-adapting to terminal.Wherein, power headroom reporting (PHR) PHR includes：Type 1 PHR, for reflect and terminal maximum transmission power and Physical Uplink Shared Channel PUSCH transmission used by uplink transmission power Between difference；The PHR of Type 2 are used to reflect that terminal maximum transmission power passes with PUSCH and Physical Uplink Control Channel PUCCH Difference used by defeated between uplink transmission power.And when base station is configured with extension PHR PHR (extended) and PUCCH During with PUSCH simultaneous transmissions (simultaneous PUCCH-PUSCH) parameter, terminal to the PHR of base station repeats Type 1 and The PHR of Type 2, otherwise terminal is to the PHR of base station repeats Type 1, and PHR is related to the PUSCH power in this cell.
In the prior art, UE can only report PHR according to the PUSCH power of uplink cells, and if allowing in SRS cells When UE only sends out SRS and do not send out PUSCH, then PHR can not be reported.
The content of the invention
The purpose of the embodiment of the present invention is to propose a kind of method and device of reporting power margin, it is intended to solve how The problem of how mobile terminal reports PHR in SRS cells when descending cell is more than uplink cells number.
To use following technical scheme up to this purpose, the embodiment of the present invention：
In a first aspect, a kind of method of reporting power margin, methods described include：
SRS cells obtain calculating parameter, and the SRS cells are not send out the uplink cells that PUSCH only sends out SRS；
The SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, and after reporting calculating PHR；
Wherein, the calculating parameter includes the initial power parameter P of base station configurationO_SRS,c；Or SRS initial power parameters PO_SRS,cWith the bandwidth M of SRS cellsSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cWith Path loss coefficient correlation αSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the road Footpath loss coefficient correlation αSRS,c, related to transmitting power control word TPC function fSRS,c(i)。
Preferably, the SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, including：
The SRS cells are according to the initial power parameter PO_SRS,cAnd preset rules Calculate power headroom PHR；
Wherein,By PCMAX,c(i) and PUSCH coded modulation scheme (Modulation and Coding Scheme, MCS) grade determine peak power drop-out value (Maximum Power Reduction, MPR)/addictive maximum power Drop-out value (Additional Maximum Power Reduction, A-MPR)/power management peak power drop-out value (Power Management Maximum Power Reduction, P-MPR) determined, the PCMAX,c(i) it is subframe i, serving cell c The UE peak powers of middle configuration.
Preferably, the SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, including：
The SRS cells are according to the initial power parameter PO_SRS,c, SRS cells bandwidth MSRS,cAnd preset rulesCalculate power headroom PHR；
Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
Preferably, the SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, including：
The SRS cells are according to the initial power parameter PO_SRS,c, SRS cells bandwidth MSRS,c, path loss it is related Factor alphaSRS,cAnd preset rulesCalculate work( Rate surplus PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
Preferably, the αSRS,cSpan be αSRS,c∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 }, it is described αSRS,cThe mobile terminal is handed down to by the base station；
Preferably, the SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, including：
The SRS cells are according to the initial power parameter PO_SRS,c, SRS cells bandwidth MSRS,c, path loss it is related Factor alphaSRS,c, related to transmitting power control word TPC function fSRS,cAnd preset rules (i)：
Calculate power Surplus PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
Preferably, the fSRS,c(i) it is to be overlapped operation by the TPC received to be calculated；
Wherein, the superposition behaviour is the functional value f of present sub-frameSRS,c(i) for it is preceding once send SRS when functional value and previous The power adjustment δ received after secondary transmission SRSSRS,cThe operation of addition.
Preferably, before the SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, also wrap Include：
Feed back to obtain TPC by the SRS cells, or transmission is carried by physical downlink control channel PDCCH and obtained TPC。
Preferably, it is described that TPC is obtained by physical downlink control channel PDCCH carrying transmission, including：
After the SRS of SRS cells is received, the base station is carried by downstream grants DL grant and by PDCCH for base station SRS TPC is issued to the mobile terminal.
Preferably, after the SRS of SRS cells is received, the base station is by downstream grants DL grant and leads to for the base station Cross PDCCH and carry the TPC for issuing SRS to the mobile terminal, including：
The base station dynamically sends the TPC of up channel, the dynamic basis of mobile terminal for the mobile terminal The TPC of reception is adjusted to the power of the up channel.
Preferably, after the SRS of SRS cells is received, the base station is by downstream grants DL grant and leads to for the base station Cross PDCCH and carry the TPC for issuing SRS to the mobile terminal, including：
The mobile terminal configuration TPC-SRS-RNTI is given in the base station；
When UE TPC is transmitted in the base station using PDCCH DCl format 3/3a carryings, by TPC-SRS-RNTI pairs PDCCH is scrambled, and indicates the position for corresponding to the TPC of the mobile terminal using the parameter tpc-index of high-rise configuration；
The mobile terminal receives PDCCH, and obtains the TPC of this mobile terminal.
Preferably, it is described that TPC is obtained by physical downlink control channel PDCCH carrying transmission, including：
After the SRS of SRS cells is received, the base station is carried by PDCCH DCI format3 or format 3a for base station SRS TPC is informed in transmission.
Preferably, when the SRS cells have the mobile terminal for meeting preparatory condition, the PDCCH DCI format3 have 2bits TPC, the format 3a only have 1bit TPC.
Second aspect, a kind of device of reporting power margin, described device include：
First acquisition module, for obtaining calculating parameter, the acquisition module is SRS cells, and the SRS cells are not send out PUSCH only sends out SRS uplink cells；
Computing module, for calculating power headroom PHR according to the calculating parameter and preset rules, and after reporting calculating PHR；
Wherein, the calculating parameter includes the initial power parameter P of base station configurationO_SRS,c；Or SRS initial power parameters PO_SRS,cWith the bandwidth M of SRS cellsSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cWith Path loss coefficient correlation αSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the road Footpath loss coefficient correlation αSRS,c, related to transmitting power control word TPC function fSRS,c(i)。
Preferably, the computing module, is specifically used for：
According to the initial power parameter PO_SRS,cAnd preset rulesCalculate power Surplus PHR；
Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
Preferably, the computing module, is specifically used for：
According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cAnd preset rulesCalculate power headroom PHR；
Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
Preferably, the computing module, is specifically used for：
According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the path loss coefficient correlation αSRS,cAnd preset rulesCalculate more than power Measure PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
Preferably, the αSRS,cSpan be αSRS,c∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 }, it is described αSRS,cThe mobile terminal is handed down to by the base station；
Preferably, the computing module, is specifically used for：
According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the path loss coefficient correlation αSRS,c, the function f related to transmitting power control word TPCSRS,cAnd preset rules (i)：
Calculate power Surplus PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
Preferably, the fSRS,c(i) it is to be overlapped operation by the TPC received to be calculated；
Wherein, the superposition behaviour is the functional value f of present sub-frameSRS,c(i) for it is preceding once send SRS when functional value and previous The power adjustment δ received after secondary transmission SRSSRS,cThe operation of addition.
Preferably, described device also includes：
Second acquisition module, for before power headroom PHR is calculated according to the calculating parameter and preset rules, passing through The SRS cells are fed back to obtain TPC, or carry transmission by physical downlink control channel PDCCH and obtain TPC.
Preferably, second acquisition module, is specifically used for：
After the SRS of the SRS cells is received, carried and received by the PDCCH of the base station down mandate DL grant The TPC for the SRS cells that base station is sent.
Preferably, second acquisition module, is specifically used for：
The TPC for the up channel that the base station is sent dynamically is received, and dynamically according to the TPC of reception to described up The power of channel is adjusted.
Preferably, second acquisition module, is specifically used for：
Receive the TPC-SRS-RNTI of the base station configuration；
When transmitting the TPC of the mobile terminal using PDCCH DCl format 3/3a carryings in the base station, by TPC- SRS-RNTI scrambles to PDCCH, and corresponds to the mobile terminal using the parameter tpc-index instructions of high-rise configuration TPC position；
PDCCH is received, and obtains the TPC of this mobile terminal.
Preferably, second acquisition module, is specifically used for：
After the SRS of SRS cells is received, receive the base station and carried by PDCCH DCI format3 or format 3a SRS TPC is informed in transmission.
Preferably, when the SRS cells have the mobile terminal for meeting preparatory condition, the PDCCH DCI format3 have 2bits TPC, the format 3a only have 1bit TPC.
The embodiment of the present invention provides a kind of method and device of reporting power margin, and SRS cells obtain calculating parameter, described SRS cells are not send out the uplink cells that PUSCH only sends out SRS；The SRS cells calculate according to the calculating parameter and preset rules Power headroom PHR, and report the PHR after calculating, it would be preferable to support UE carries out PHR in SRS cells and reported.
Brief description of the drawings
Fig. 1 is a kind of schematic flow sheet of the method for reporting power margin provided in an embodiment of the present invention；
Fig. 2 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention；
Fig. 3 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention；
Fig. 4 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention；
Fig. 5 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention；
Fig. 6 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention；
Fig. 7 is a kind of high-level schematic functional block diagram of the device of reporting power margin provided in an embodiment of the present invention.
Embodiment
The embodiment of the present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this The specific embodiment of place description is used only for explaining the embodiment of the present invention, rather than the restriction to the embodiment of the present invention.In addition also It should be noted that for the ease of describing, the part related to the embodiment of the present invention rather than entire infrastructure are illustrate only in accompanying drawing.
With reference to figure 1, Fig. 1 is a kind of schematic flow sheet of the method for reporting power margin provided in an embodiment of the present invention.
As shown in figure 1, the method for the reporting power margin includes：
Step 101, SRS cells obtain calculating parameter, and the SRS cells are not send out the uplink cells that PUSCH only sends out SRS；
Step 102, the SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, and report meter PHR after calculation；
Specifically, the PHR of SRS cells only reports Type 1, and it is thereinComputational methods and existing Type Computational methods when 1PHR is without PUSCH are identical.And PHR is related to parameters described below：
UE maximum transmission power；The SRS initial powers P of cellO_SRS,c；The RB quantity for carrying SRS (or is described as SRS bandwidth)；Path loss and coefficient correlation αSRS,c；Transmitting power control (transmit power control, TPC).
Wherein, the calculating parameter includes the initial power parameter P of base station configurationO_SRS,c；Or SRS initial power parameters PO_SRS,cWith the bandwidth M of SRS cellsSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cWith Path loss coefficient correlation αSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the road Footpath loss coefficient correlation αSRS,c, related to transmitting power control word TPC function fSRS,c(i)。
The embodiment of the present invention provides a kind of method of reporting power margin, and SRS cells obtain calculating parameter, and the SRS is small Area is not send out the uplink cells that PUSCH only sends out SRS；The SRS cells calculate power according to the calculating parameter and preset rules Surplus PHR, and report the PHR after calculating, it would be preferable to support UE carries out PHR in SRS cells and reported.
With reference to figure 2, Fig. 2 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention.
As shown in Fig. 2 methods described includes：
Step 201, SRS cells obtain calculating parameter, and the SRS cells are not send out the uplink cells that PUSCH only sends out SRS；
Step 202, the SRS cells are according to the initial power parameter PO_SRS,cAnd preset rulesCalculate power headroom PHR；
Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.PCMAX,c(i) it is mobile terminal (User Equipment, UE) the maximum transmit power that is determined of ability,It is by PCMAX,c(i) and excessive power demands such as What MPR/A-MPR/P-MPR was determined.
With reference to figure 3, Fig. 3 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention.
As shown in figure 3, methods described includes：
Step 301, SRS cells obtain calculating parameter, and the SRS cells are not send out the uplink cells that PUSCH only sends out SRS；
Step 302, the SRS cells are according to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cWith Preset rulesCalculate power headroom PHR；
Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
With reference to figure 4, Fig. 4 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention.
As shown in figure 4, methods described includes：
Step 401, SRS cells obtain calculating parameter, and the SRS cells are not send out the uplink cells that PUSCH only sends out SRS；
Step 402, the SRS cells are according to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, it is described Path loss coefficient correlation αSRS,cAnd preset rules Calculate power headroom PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcBe mobile terminal estimation downlink path-loss, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
The αSRS,cSpan be αSRS,c∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 }, the αSRS,cBy institute State base station and be handed down to the mobile terminal.
Wherein, the mobile terminal to SRS cells send SRS, the mobile terminal it needs to be determined that SRS cells power Surplus.
With reference to figure 5, Fig. 5 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention.
As shown in figure 5, methods described includes：
Step 501, SRS cells obtain calculating parameter, and the SRS cells are not send out the uplink cells that PUSCH only sends out SRS；
Step 502, the SRS cells are according to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c、 The path loss coefficient correlation αSRS,c, the function f related to transmitting power control word TPCSRS,cAnd preset rules (i)：
Calculate power Surplus PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
Preferably, the fSRS,c(i) it is to be overlapped operation by the TPC received to be calculated；
Wherein, the superposition behaviour is the functional value f of present sub-frameSRS,c(i) for it is preceding once send SRS when functional value and previous The power adjustment δ received after secondary transmission SRSSRS,cThe operation of addition.
Specifically, UE is overlapped operation, f by the TPC receivedSRS,c(i) it is previous for the functional value of present sub-frame, utilization The power adjustment δ received after functional value during secondary transmission SRS, and preceding once transmission SRSSRS,cObtained after being added.
Wherein δSRS,cRelation with TPC is：When TPC is represented with 2bit, 4 values can be taken；When TPC is represented with 1bit When, 2 values can be taken.
With reference to figure 6, Fig. 6 is the schematic flow sheet of the method for another reporting power margin provided in an embodiment of the present invention.
As shown in fig. 6, methods described includes：
Step 601, SRS cells obtain calculating parameter, and the SRS cells are not send out the uplink cells that PUSCH only sends out SRS；
Step 602, feed back to obtain TPC by the SRS cells, or carried by physical downlink control channel PDCCH Transmission obtains TPC；
Preferably, it is described by Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) carrying transmission obtains TPC, including：
After the SRS of SRS cells is received, the base station is carried by downstream grants DL grant and by PDCCH for base station SRS TPC is issued to the mobile terminal.
Preferably, after the SRS of SRS cells is received, the base station is by downstream grants DL grant and leads to for the base station Cross PDCCH and carry the TPC for issuing SRS to the mobile terminal, including：
The base station dynamically sends the TPC of up channel, the dynamic basis of mobile terminal for the mobile terminal The TPC of reception is adjusted to the power of the up channel.
Preferably, after the SRS of SRS cells is received, the base station is by downstream grants DL grant and leads to for the base station Cross Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH) carrying issue SRS TPC to The mobile terminal, including：
Radio Network Temporary Identifier (the Radio of the mobile terminal configuration SRS transmit power command words is given in the base station Network Tempory Identity, RNTI) TPC-SRS-RNTI；
The base station utilizes downlink control channel format 3/3a (PDCCH Downlink Control Information in Physical Downlink Control Channel (Downlink Control Information, DCl) format 3/3a) carrying transmission UE TPC when, by TPC-SRS- RNTI scrambles to PDCCH, and indicates the TPC for corresponding to the mobile terminal using the parameter tpc-index of high-rise configuration Position；
The mobile terminal receives PDCCH, and obtains the TPC of this mobile terminal.
Preferably, it is described that TPC is obtained by physical downlink control channel PDCCH carrying transmission, including：
After the SRS of SRS cells is received, the base station is carried by PDCCH DCI format3 or format 3a for base station SRS TPC is informed in transmission.
Wherein, when the SRS cells have the mobile terminal for meeting preparatory condition, the PDCCH DCI format3 have 2bits TPC, the format 3a only have 1bit TPC.
Step 603, the SRS cells are according to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c、 The path loss coefficient correlation αSRS,c, the function f related to transmitting power control word TPCSRS,cAnd preset rules (i)：
Calculate power Surplus PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
It is a kind of high-level schematic functional block diagram of the device of reporting power margin provided in an embodiment of the present invention with reference to 7, Fig. 7.
As shown in fig. 7, the device of the reporting power margin includes：
First acquisition module 701, for obtaining calculating parameter, the acquisition module is SRS cells, and the SRS cells are The uplink cells that PUSCH only sends out SRS are not sent out；
Computing module 702, for calculating power headroom PHR according to the calculating parameter and preset rules, and report calculating PHR afterwards；
Wherein, the calculating parameter includes the initial power parameter P of base station configurationO_SRS,c；Or SRS initial power parameters PO_SRS,cWith the bandwidth M of SRS cellsSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cWith Path loss coefficient correlation αSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the road Footpath loss coefficient correlation αSRS,c, related to transmitting power control word TPC function fSRS,c(i)。
Preferably, the computing module 702, is specifically used for：
According to the initial power parameter PO_SRS,cAnd preset rulesCalculate power Surplus PHR；
Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
Preferably, the computing module 702, is specifically used for：
According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cAnd preset rulesCalculate power headroom PHR；
Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
Preferably, the computing module 702, is specifically used for：
According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the path loss coefficient correlation αSRS,cAnd preset rulesCalculate more than power Measure PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
Preferably, the αSRS,cSpan be αSRS,c∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 }, it is described αSRS,cThe mobile terminal is handed down to by the base station；
Preferably, the computing module 702, is specifically used for：
According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the path loss coefficient correlation αSRS,c, the function f related to transmitting power control word TPCSRS,cAnd preset rules (i)：
Calculate power Surplus PHR；
Wherein, it is describedBy PCMAX,c(i) the MPR/A-MPR/P-MPR institutes determined with PUSCH MCS grades are really It is fixed, the PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
Preferably, the fSRS,c(i) it is to be overlapped operation by the TPC received to be calculated；
Wherein, the superposition behaviour is the functional value f of present sub-frameSRS,c(i) for it is preceding once send SRS when functional value and previous The power adjustment δ received after secondary transmission SRSSRS,cThe operation of addition.
Preferably, described device also includes：
Second acquisition module, for before power headroom PHR is calculated according to the calculating parameter and preset rules, passing through The SRS cells are fed back to obtain TPC, or carry transmission by physical downlink control channel PDCCH and obtain TPC.
Preferably, second acquisition module, is specifically used for：
After the SRS of the SRS cells is received, carried and received by the PDCCH of the base station down mandate DL grant The TPC for the SRS cells that base station is sent.
Preferably, second acquisition module, is specifically used for：
The TPC for the up channel that the base station is sent dynamically is received, and dynamically according to the TPC of reception to described up The power of channel is adjusted.
Preferably, second acquisition module, is specifically used for：
Receive the TPC-SRS-RNTI of the base station configuration；
When transmitting the TPC of the mobile terminal using PDCCH DCl format 3/3a carryings in the base station, by TPC- SRS-RNTI scrambles to PDCCH, and corresponds to the mobile terminal using the parameter tpc-index instructions of high-rise configuration TPC position；
PDCCH is received, and obtains the TPC of this mobile terminal.
Preferably, second acquisition module, is specifically used for：
After the SRS of SRS cells is received, receive the base station and carried by PDCCH DCI format3 or format 3a SRS TPC is informed in transmission.
Preferably, when the SRS cells have the mobile terminal for meeting preparatory condition, the PDCCH DCI format3 have 2bits TPC, the format 3a only have 1bit TPC.
The embodiment of the present invention provides a kind of device of reporting power margin, and SRS cells obtain calculating parameter, and the SRS is small Area is not send out the uplink cells that PUSCH only sends out SRS；The SRS cells calculate power according to the calculating parameter and preset rules Surplus PHR, and report the PHR after calculating, it would be preferable to support UE carries out PHR in SRS cells and reported.
The technical principle of the embodiment of the present invention is described above in association with specific embodiment.These descriptions are intended merely to explain this The principle of inventive embodiments, and the limitation to protection domain of the embodiment of the present invention can not be construed in any way.Based on herein Explanation, those skilled in the art, which would not require any inventive effort, can associate the other specific of the embodiment of the present invention Embodiment, these modes are fallen within the protection domain of the embodiment of the present invention.

Claims (26)

  1. A kind of 1. method of reporting power margin, it is characterised in that methods described includes：
    Detection reference signal SRS cells obtain calculating parameter, and the SRS cells are not send out Physical Downlink Shared Channel PUSCH only Send out SRS uplink cells；
    The SRS cells calculate power headroom PHR according to the calculating parameter and preset rules, and report the PHR after calculating；
    Wherein, the calculating parameter includes the initial power parameter P of base station configurationO_SRS,c；Or SRS initial power parameters PO_SRS,cWith the bandwidth M of SRS cellsSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cWith Path loss coefficient correlation αSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the road Footpath loss coefficient correlation αSRS,c, related to transmitting power control word TPC function fSRS,c(i)。
  2. 2. according to the method for claim 1, it is characterised in that the SRS cells are according to the calculating parameter and default rule Power headroom PHR is then calculated, including：
    The SRS cells are according to the initial power parameter PO_SRS,cAnd preset rules Calculate power headroom PHR；
    Wherein,By PCMAX,c(i) the peak power drop-out value determined with PUSCH coded modulation scheme MCS grades MPR/ addictive maximum power drop-out value A-MPR/ power management peak power drop-out values P-MPR determined, the PCMAX,c(i) it is The UE peak powers configured in subframe i, serving cell c.
  3. 3. according to the method for claim 1, it is characterised in that the SRS cells are according to the calculating parameter and default rule Power headroom PHR is then calculated, including：
    The SRS cells are according to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cAnd preset rulesCalculate power headroom PHR；
    Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, described PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
  4. 4. according to the method for claim 1, it is characterised in that the SRS cells are according to the calculating parameter and default rule Power headroom PHR is then calculated, including：
    The SRS cells are according to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the path loss Coefficient correlation αSRS,cAnd preset rulesMeter Calculate power headroom PHR；
    Wherein, it is describedBy PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
    The PLcBe mobile terminal estimation downlink path-loss, the PLc=referenceSignalPower-higher Layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher layer Filtered RSRP are calculated by the mobile terminal.
  5. 5. according to the method for claim 4, it is characterised in that the αSRS,cSpan be αSRS,c∈{0,0.4, 0.5,0.6,0.7,0.8,0.9,1 }, the αSRS,cThe mobile terminal is handed down to by the base station.
  6. 6. according to the method for claim 1, it is characterised in that the SRS cells are according to the calculating parameter and default rule Power headroom PHR is then calculated, including：
    The SRS cells are according to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the path loss Coefficient correlation αSRS,c, the function f related to transmitting power control word TPCSRS,cAnd preset rules (i)：
    Calculate power headroom PHR；
    Wherein, it is describedBy PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
    The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
  7. 7. according to the method for claim 6, it is characterised in that the fSRS,c(i) it is that behaviour is overlapped by the TPC received Make what is be calculated；
    Wherein, the superposition behaviour is the functional value f of present sub-frameSRS,c(i) for it is preceding once send SRS when functional value and preceding once send out Send the power adjustment δ received after SRSSRS,cThe operation of addition.
  8. 8. according to the method for claim 6, it is characterised in that the SRS cells are according to the calculating parameter and default rule Before then calculating power headroom PHR, in addition to：
    Feed back to obtain transmitting power control TPC by the SRS cells, or carried by physical downlink control channel PDCCH Transmission obtains TPC.
  9. 9. according to the method for claim 8, it is characterised in that described carried by physical downlink control channel PDCCH passes It is defeated to obtain TPC, including：
    After the SRS of SRS cells is received, the base station issues by downstream grants DL grant and by PDCCH carryings for base station SRS TPC gives the mobile terminal.
  10. 10. according to the method for claim 9, it is characterised in that the base station is after the SRS of SRS cells is received, the base Stand by downstream grants DL grant and the TPC for issuing SRS is carried to the mobile terminal by PDCCH, including：
    The base station dynamically sends the TPC of up channel for the mobile terminal, and the mobile terminal is dynamically according to reception TPC the power of the up channel is adjusted.
  11. 11. according to the method for claim 9, it is characterised in that the base station is after the SRS of SRS cells is received, the base Stand by downstream grants DL grant and the TPC for issuing SRS is carried to the mobile terminal by PDCCH, including：
    The mobile terminal configuration TPC-SRS-RNTI is given in the base station；
    Held using downlink control channel format 3/3aPDCCH DCl format 3/3a in Physical Downlink Control Channel the base station When carrying transmission UE TPC, PDCCH is carried out by the Radio Network Temporary Identifier TPC-SRS-RNTI of SRS transmit power command words Scrambling, and the position using the high-rise parameter tpc-index instructions configured corresponding to the TPC of the mobile terminal；
    The mobile terminal receives PDCCH, and obtains the TPC of this mobile terminal.
  12. 12. according to the method for claim 8, it is characterised in that described carried by physical downlink control channel PDCCH passes It is defeated to obtain TPC, including：
    After the SRS of SRS cells is received, the base station is carried by PDCCH DCI format3 or format 3a and transmitted for base station Inform SRS TPC.
  13. 13. according to the method for claim 12, it is characterised in that the SRS cells have the mobile end for meeting preparatory condition During end, the PDCCH DCI format3 have 2bits TPC, the format 3a there was only 1bit TPC.
  14. 14. a kind of device of reporting power margin, it is characterised in that described device includes：
    First acquisition module, for obtaining calculating parameter, the acquisition module is SRS cells, and the SRS cells are not send out PUSCH only sends out SRS uplink cells；
    Computing module, for calculating power headroom PHR according to the calculating parameter and preset rules, and report the PHR after calculating；
    Wherein, the calculating parameter includes the initial power parameter P of base station configurationO_SRS,c；Or SRS initial power parameters PO_SRS,cWith the bandwidth M of SRS cellsSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cWith Path loss coefficient correlation αSRS,c；Or the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the road Footpath loss coefficient correlation αSRS,c, related to transmitting power control word TPC function fSRS,c(i)。
  15. 15. device according to claim 14, it is characterised in that the computing module, be specifically used for：
    According to the initial power parameter PO_SRS,cAnd preset rulesCalculate power headroom PHR；
    Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, described PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
  16. 16. device according to claim 14, it is characterised in that the computing module, be specifically used for：
    According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,cAnd preset rulesCalculate power headroom PHR；
    Wherein,By PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, described PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c.
  17. 17. device according to claim 14, it is characterised in that the computing module, be specifically used for：
    According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the path loss coefficient correlation αSRS,c And preset rulesCalculate power headroom PHR；
    Wherein, it is describedBy PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
    The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
  18. 18. device according to claim 17, it is characterised in that the αSRS,cSpan be αSRS,c∈{0,0.4, 0.5,0.6,0.7,0.8,0.9,1 }, the αSRS,cThe mobile terminal is handed down to by the base station.
  19. 19. device according to claim 14, it is characterised in that the computing module, be specifically used for：
    According to the initial power parameter PO_SRS,c, the SRS cells bandwidth MSRS,c, the path loss coefficient correlation αSRS,c, the function f related to transmitting power control word TPCSRS,cAnd preset rules (i)：
    Calculate power headroom PHR；
    Wherein, it is describedBy PCMAX,c(i) MPR/A-MPR/P-MPR determined with PUSCH MCS grades is determined, institute State PCMAX,c(i) the UE peak powers to be configured in subframe i, serving cell c；
    The PLcIt is the downlink path-loss of mobile terminal estimation, the PLc=referenceSignalPower- Higher layer filtered RSRP, the referenceSignalPower are configured by the base station, the higher Layer filtered RSRP are calculated by the mobile terminal.
  20. 20. device according to claim 19, it is characterised in that the fSRS,c(i) it is to be overlapped by the TPC received What operation was calculated；
    Wherein, the superposition behaviour is the functional value f of present sub-frameSRS,c(i) for it is preceding once send SRS when functional value and preceding once send out Send the power adjustment δ received after SRSSRS,cThe operation of addition.
  21. 21. device according to claim 19, it is characterised in that described device also includes：
    Second acquisition module, for before power headroom PHR is calculated according to the calculating parameter and preset rules, by described SRS cells are fed back to obtain TPC, or carry transmission by physical downlink control channel PDCCH and obtain TPC.
  22. 22. device according to claim 21, it is characterised in that second acquisition module, be specifically used for：
    After the SRS of the SRS cells is received, base station is received by the PDCCH carryings of the base station down mandate DL grant The TPC of the SRS cells sent.
  23. 23. device according to claim 22, it is characterised in that second acquisition module, be specifically used for：
    The TPC for the up channel that the base station is sent dynamically is received, and dynamically according to the TPC of reception to the up channel Power be adjusted.
  24. 24. device according to claim 22, it is characterised in that second acquisition module, be specifically used for：
    Receive the TPC-SRS-RNTI of the base station configuration；
    When transmitting the TPC of the mobile terminal using PDCCH DCl format 3/3a carryings in the base station, by TPC-SRS- RNTI scrambles to PDCCH, and indicates the TPC for corresponding to the mobile terminal using the parameter tpc-index of high-rise configuration Position；
    PDCCH is received, and obtains the TPC of this mobile terminal.
  25. 25. device according to claim 21, it is characterised in that second acquisition module, be specifically used for：
    After the SRS of SRS cells is received, receive the base station and transmission is carried by PDCCH DCI format3 or format 3a Inform SRS TPC.
  26. 26. device according to claim 25, it is characterised in that the SRS cells have the mobile end for meeting preparatory condition During end, the PDCCH DCI format3 have 2bits TPC, the format 3a there was only 1bit TPC.
CN201610634007.8A 2016-08-04 2016-08-04 A kind of method and device of reporting power margin Pending CN107690157A (en)

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