CN107317660A - Detection reference signal sending method and device - Google Patents
Detection reference signal sending method and device Download PDFInfo
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- CN107317660A CN107317660A CN201610266293.7A CN201610266293A CN107317660A CN 107317660 A CN107317660 A CN 107317660A CN 201610266293 A CN201610266293 A CN 201610266293A CN 107317660 A CN107317660 A CN 107317660A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
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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
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Abstract
The invention discloses detection reference signal sending method and device, this method includes：The power excursion P configured according at least to network sideSRS_OFFSET,cThe power P for sending SRS is calculated with sent out detection reference signal SRS bandwidth, and one belowSRS：The SRS initial power parameters P of network side configurationO_SRS,c, network side configuration SRS initial powers and path loss coefficient correlation αSRS,c；The P obtained using calculatingSRSSend SRS.The problem of can not carrying out SRS Power Controls when prior art does not send out PUSCH is solved by the present invention, so that SRS Power Control can also be carried out when not sending out PUSCH.
Description
Technical field
The present invention relates to communication field, in particular to detection reference signal sending method and device.
Background technology
In the lte networks, many is arranged net in scene because downlink business is more than uplink service, is then configured
Descending carrier quantity exceedes up-link carrier quantity.Typical UE abilities only support one in existing UE species
Individual or two up-link carriers.Exploitable channel reciprocity in TDD LTE, obtains downlink channel condition, i.e.,
ENB receives the SRS (detection reference signal) that UE is sent, and obtains up and downlink channel condition, refers to
This information carries out descending scheduling.When descending carrier (or being cell, current carrier wave is that is, cell)
When number is more than up-link carrier, such as UE is configured with 2DL+1UL, and now eNB can only be sent out by 1UL
SRS obtains 1DL channel condition information, and another descending carrier can not be obtained by channel reciprocity
Channel condition information.
Research topic RP-160676, " New WI proposal are set up in 3GPP RAN71:SRS Carrier
Based Switching for LTE ", research can sent out when descending carrier number is more than up-link carrier number
PDSCH and only hair SRS can not be sent out in PUSCH cell, switched by the SRS between TDD cell,
Channel reciprocity is preferably utilized, the downlink system performance of TDD system is improved.
UE hairs SRS power is expressed as P in subframe i in current agreement, serving cell cSRS, by following formula meter
Calculate：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_PUSCH,c(j)+αc(j)·PLc+fc(i)}
[dBm]
Wherein：
-PCMAX,c(i) it is subframe i, the UE peak powers configured in serving cell c
-PSRS_OFFSET,c(m) it is semi-statically configured for network side, for serving cell c, if SRS is triggering
Type 0 is m=0, the m=1 if SRS is triggering Class1.UE biases are notified with 5bit or 4bit.
-MSRS,cIt is subframe i, serving cell c SRS transmission bandwidth is represented with RB numbers
-fc(i) it is current PUSCH power adjustment state in serving cell c
-PO_PUSCH,c(j) it is PUSCH initial gain values,
αc(j) the cell-level parameter configured for network side, can use
αc(j)=αc,2∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 } is also the parameter related to the adjustment of PUSCH power.
PLcIt is the downlink path-loss of UE estimations, unit is dB, and calculated by following formula：
PLc=referenceSignalPower-higher layer filtered RSRP, wherein
ReferenceSignalPower is configured by high level, and higher layer filtered RSRP are calculated by UE and obtained.
It can be seen that, SRS Power Control is to being that PUSCH power is related in this cell.
UE can only adjust SRS power according to the PUSCH power of uplink cells in the prior art, and
If allow that UE only sends out SRS and do not send out PUSCH in SRS cells, it is impossible to carry out SRS Power Controls.
The content of the invention
The invention provides detection reference signal sending method and device, do not sent out with solving prior art
The problem of SRS Power Controls can not being carried out during PUSCH.
According to an aspect of the invention, there is provided a kind of detection reference signal sending method, including：At least
The power excursion P configured according to network sideSRS_OFFSET,cWith sent out detection reference signal SRS bandwidth, and with
It is one of lower to calculate the power P for sending the SRSSRS：The SRS initial power parameters P of network side configurationO_SRS,c、
The SRS initial powers and path loss coefficient correlation α of network side configurationSRS,c；The P obtained using calculatingSRSHair
Send the SRS.
Further, the power excursion P configured using equation below according to network sideSRS_OFFSET,cWith send out detection
Reference signal SRS bandwidth, and the SRS initial power parameters P that network side is configuredO_SRS,cCalculate and send institute
State SRS power PSRS：PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_SRS,c,
Wherein, i represents subframe.
Further, the power excursion P configured using equation below according to network sideSRS_OFFSET,cWith send out detection
Reference signal SRS bandwidth, and network side configuration SRS initial powers and path loss coefficient correlation
αSRS,cCalculate the power for sending the SRSPSRS：αSRS,c∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 },
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+αSRS,c·PLc, wherein, i represents subframe.
Further, the power excursion P configured according to network sideSRS_OFFSET,cWith sent out detection reference signal SRS
Bandwidth, and network side configuration SRS initial powers and path loss coefficient correlation αSRS,cCalculate and send
The power P of the SRSSRSIncluding：The power excursion P configured according to network sideSRS_OFFSET,c, send out detection ginseng
Examine signal SRS bandwidth, the SRS initial powers and path loss coefficient correlation α of network side configurationSRS,cWith
And the corresponding function f of TPC of the SRS feedbacks in SRS cells are directed to by base stationSRS,c(i), calculate and send institute
State SRS power PSRS。
Further, the power excursion P configured using below equation according to network sideSRS_OFFSET,c, send out detection
Reference signal SRS bandwidth, the SRS initial powers and path loss coefficient correlation α of network side configurationSRS,cWith
And the corresponding function f of TPC of the SRS feedbacks in SRS cells are directed to by base stationSRS,c(i), calculate and send institute
State SRS power PSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_PUSCH,c(j)+αc(j)·PLc+fSRS,c(i)}
, wherein, i represents subframe.
Further, methods described also includes：Pass through physical downlink control channel PDCCH carrying transmission institute
State TPC information.
Further, the information for carrying the transmission TPC by Physical Downlink Control Channel includes：Base station
After the SRS for receiving SRS cells, pass through downstream grants, PDCCH DCI format3 or format 3a
Carrying issues the SRS TPC to user equipment.
Further, the base station utilizes the PDCCH DCl format 3 or 3a carrying transmission TPC letters
During breath, the TPC-SRS-RNTI configured by network side is scrambled to PDCCH, and utilizes high-rise configuration
Parameter tpc-index indicate which position corresponds to the TPC information of the user equipment.
According to another aspect of the present invention, a kind of detection reference signal dispensing device is additionally provided, including：
Computing module, for the power excursion P configured according at least to network sideSRS_OFFSET,cWith sent out detection reference signal
SRS bandwidth, and one below calculate the power P for sending the SRSSRS：The SRS of network side configuration
Initial power parameter PO_SRS,c, network side configuration SRS initial powers and path loss coefficient correlation αSRS,c；
Sending module, for the P obtained using calculatingSRSSend the SRS.
Further, the computing module is used for the power excursion configured using equation below according to network side
PSRS_OFFSET,cWith the SRS initial powers of sent out detection reference signal SRS bandwidth, and network side configuration
Parameter PO_SRS,cCalculate the power P for sending the SRSSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_SRS,c, wherein, i is represented
Subframe.
Further, the computing module is used for the power excursion configured using equation below according to network side
PSRS_OFFSET,cWith the SRS initial powers of sent out detection reference signal SRS bandwidth, and network side configuration
With path loss coefficient correlation αSRS,cCalculate the power P for sending the SRSSRS：
αSRS,c∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 },
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+αSRS,c·PLc, wherein, i represents subframe.
Further, the computing module is used for the power excursion P configured according to network sideSRS_OFFSET,c, sent out
Detection reference signal SRS bandwidth, the SRS initial powers of network side configuration and path loss coefficient correlation
αSRS,cAnd the corresponding function f of TPC of the SRS feedbacks in SRS cells are directed to by base stationSRS,c(i), calculate
Send the power P of the SRSSRS。
Further, the computing module is used for the power excursion configured using below equation according to network side
PSRS_OFFSET,c, send out detection reference signal SRS bandwidth, network side configuration SRS initial powers and road
Footpath loss coefficient correlation αSRS,cAnd the corresponding letters of TPC of the SRS feedbacks in SRS cells are directed to by base station
Number fSRS,c(i) power P for sending the SRS, is calculatedSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_PUSCH,c(j)+αc(j)·PLc+fSRS,c(i)}
, wherein, i represents subframe.
By the present invention, using the power excursion P configured according at least to network sideSRS_OFFSET,cJoin with detection is sent out
Signal SRS bandwidth is examined, and one below calculates the power P for sending the SRSSRS：Network side is configured
SRS initial power parameters PO_SRS,c, network side configuration SRS initial powers and path loss coefficient correlation
αSRS,c；The P obtained using calculatingSRSSend the SRS.Prior art is solved by the present invention not send out
The problem of SRS Power Controls can not being carried out during PUSCH, so as to can also be carried out when not sending out PUSCH
SRS Power Control.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application,
The schematic description and description of the present invention is used to explain the present invention, does not constitute the improper limit to the present invention
It is fixed.In the accompanying drawings：
Fig. 1 is the flow chart of detection reference signal sending method according to embodiments of the present invention；
Fig. 2 is the structured flowchart of detection reference signal dispensing device according to embodiments of the present invention.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application
It can be mutually combined.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of detection reference signal sending method is provided in the present embodiment, and Fig. 1 is according to present invention implementation
The flow chart of the detection reference signal sending method of example, as shown in figure 1, the flow comprises the following steps：
Step S102, the power excursion P configured according at least to network sideSRS_OFFSET,cWith sent out detection reference signal
SRS bandwidth, and one below calculate the power P for sending SRSSRS：The SRS of network side configuration is initial
Power parameter PO_SRS,c, network side configuration SRS initial powers and path loss coefficient correlation αSRS,c；
Step S104, the P obtained using calculatingSRSSend SRS.
Asking for SRS Power Controls can not be carried out by being solved by above-mentioned steps when prior art does not send out PUSCH
Topic, so that SRS Power Control can also be carried out when not sending out PUSCH.
As an optional embodiment, the power excursion configured using equation below according to network side
PSRS_OFFSET,cWith the SRS initial powers of sent out detection reference signal SRS bandwidth, and network side configuration
Parameter PO_SRS,cCalculate the power P for sending SRSSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_SRS,c, wherein, i is represented
Subframe.
As an optional embodiment, the power excursion configured using equation below according to network side
PSRS_OFFSET,cWith the SRS initial powers of sent out detection reference signal SRS bandwidth, and network side configuration
With path loss coefficient correlation αSRS,cCalculate the power P for sending SRSSRS：
αSRS,c∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 },
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+αSRS,c·PLc, wherein, i represents subframe.
As an optional embodiment, the power excursion P configured according to network sideSRS_OFFSET,cWith send out spy
Survey reference signal SRS bandwidth, and network side configuration SRS initial powers and path loss phase relation
Number αSRS,cCalculate the power P for sending SRSSRSIncluding：The power excursion P configured according to network sideSRS_OFFSET,c、
Sent out detection reference signal SRS bandwidth, the SRS initial powers of network side configuration are related to path loss
Factor alphaSRS,cAnd the corresponding function f of TPC of the SRS feedbacks in SRS cells are directed to by base stationSRS,c(i),
Calculate the power P for sending SRSSRS。
As an optional embodiment, the power excursion configured using below equation according to network side
PSRS_OFFSET,c, send out detection reference signal SRS bandwidth, network side configuration SRS initial powers and road
Footpath loss coefficient correlation αSRS,cAnd the corresponding letters of TPC of the SRS feedbacks in SRS cells are directed to by base station
Number fSRS,c(i) power P for sending SRS, is calculatedSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_PUSCH,c(j)+αc(j)·PLc+fSRS,c(i)}
, wherein, i represents subframe.
As an optional embodiment, method also includes：Pass through physical downlink control channel PDCCH
Carrying transmission TPC information.
As an optional embodiment, the information for transmitting TPC is carried by Physical Downlink Control Channel
Including：Base station is received after the SRS of SRS cells, passes through downstream grants, PDCCH DCI format3
Or format 3a carryings issue SRS TPC to user equipment.
As an optional embodiment, base station utilizes PDCCH DCl format 3 or 3a carrying transmission
During TPC information, the TPC-SRS-RNTI configured by network side is scrambled to PDCCH, and utilizes height
The parameter tpc-index of layer configuration indicates which position corresponds to the TPC information of user equipment.
A kind of detection reference signal dispensing device is additionally provided in the present embodiment, and Fig. 2 is according to of the invention real
The structured flowchart of the detection reference signal dispensing device of example is applied, as shown in Fig. 2 the structure includes：
Computing module 22, for the power excursion P configured according at least to network sideSRS_OFFSET,cJoin with detection is sent out
Signal SRS bandwidth is examined, and one below calculates the power P for sending SRSSRS：Network side configuration
SRS initial power parameters PO_SRS,c, network side configuration SRS initial powers and path loss coefficient correlation
αSRS,c；
Sending module 24, for the P obtained using calculatingSRSSend SRS.
As an optional embodiment, computing module 22 is used to according to network side be matched somebody with somebody using equation below
The power excursion P putSRS_OFFSET,cWith sent out detection reference signal SRS bandwidth, and network side configuration
SRS initial power parameters PO_SRS,cCalculate the power P for sending SRSSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_SRS,c, wherein, i is represented
Subframe.
As an optional embodiment, computing module 22 is used to according to network side be matched somebody with somebody using equation below
The power excursion P putSRS_OFFSET,cWith sent out detection reference signal SRS bandwidth, and network side configuration
SRS initial powers and path loss coefficient correlation αSRS,cCalculate the power P for sending SRSSRS：
αSRS,c∈ { 0,0.4,0.5,0.6,0.7,0.8,0.9,1 },
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+αSRS,c·PLc, wherein, i represents subframe.
As an optional embodiment, computing module 22 is used for the power excursion configured according to network side
PSRS_OFFSET,c, send out detection reference signal SRS bandwidth, network side configuration SRS initial powers and road
Footpath loss coefficient correlation αSRS,cAnd the corresponding letters of TPC of the SRS feedbacks in SRS cells are directed to by base station
Number fSRS,c(i) power P for sending SRS, is calculatedSRS。
As an optional embodiment, computing module 22 is used to according to network side be matched somebody with somebody using below equation
The power excursion P putSRS_OFFSET,c, send out detection reference signal SRS bandwidth, network side configuration SRS
Initial power and path loss coefficient correlation αSRS,cAnd by base station for the SRS feedbacks in SRS cells
The corresponding function f of TPCSRS,c(i) power P for sending SRS, is calculatedSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_PUSCH,c(j)+αc(j)·PLc+fSRS,c(i)}
, wherein, i represents subframe.
Illustrated with reference to an optional embodiment.
The present embodiment is proposed in a kind of TDD LTE systems, when descending cell is more than uplink cells number,
The method how UE adjusts SRS transmission power in SRS cells.
In addition to existing configuration, network side configuration UE does not send out PUSCH but sends out SRS uplink cells, the side of being
Just describe to deserve to be called herein and state that not send out PUSCH only to send out SRS uplink cells be SRS cells.
Scheme one：UE hairs SRS power is expressed as P in subframe i, serving cell cSRS, certainly it is taken at network
The P of side configurationSRS_OFFSET,cWith sent out SRS bandwidth, and the SRS initial powers ginseng that network side is newly configured
Number scale is PO_SRS,c：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_SRS,c}[dBm]
I.e.：The transmission power of the uplink SRS of SRS cells is related to the RB quantity for carrying SRS；With SRS
Trigger type 0 or trigger the power bias correlation (same as the prior art) of Class1, m=0/1；With this
SRS initial powers are related in SRS cells.
Scheme two：UE hairs SRS power is expressed as P in subframe i, serving cell cSRS, certainly it is taken at network
The P of side configurationSRS_OFFSET,cWith sent out SRS bandwidth, SRS initial powers and the path of network side configuration are damaged
Lose coefficient correlation αSRS,c, span is αSRS,c∈{0,0.4,0.5,0.6,0.7,0.8,0.9,1}
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+αSRS,c·PLc}
I.e. relative to scheme one, in scheme two during the uplink SRS Power Control of SRS cells, its portion is compensated
Divide or whole path losses.Its ratio compensated is to be handed down to UE by high level.
Scheme three：UE hairs SRS power is expressed as P in subframe i, serving cell cSRS, certainly it is taken at network
The P of side configurationSRS_OFFSET,cWith sent out SRS bandwidth, SRS initial powers and the path of network side configuration are damaged
Lose coefficient correlation αSRS,c, and by eNB for the letter relevant TPC of the SRS feedbacks in SRS cells
Number fSRS,c(i)。
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_PUSCH,c(j)+αc(j)·PLc+fSRS,c(i)}
fSRS,c(i) computational methods can be as follows：UE is overlapped operation, f by the TPC receivedSRS,c(i) it is to work as
The functional value of preceding subframe, using it is preceding once send SRS when functional value, and it is preceding once send SRS after receive
Power adjustment δSRS,cObtained after addition.
Wherein δSRS,cWith TPC relation such as following table, when TPC is represented with 2bit, 4 values can be taken；
When TPC is represented with 1bit, 2 values can be taken.Shown in following two tables：
Table 1
Table 2
Above-mentioned TPC information is carried also by physical downlink control channel PDCCH and transmitted, and process is as follows.
Mode a：ENB is received after the SRS of SRS cells, and by downstream grants, (DL grant, pass through PDCCH
Carrying) SRS TPC is issued to UE；ENB can dynamically issue the TPC of its up channel for UE
Information, UE also just can be carried out dynamically necessarily according to the TPC information of reception to the power of up channel
Adjustment.
Mode b：ENB is received after the SRS of SRS cells, passes through PDCCH DCI format3 or format
3a carrying transmission informs SRS TPC's.For some specific UE SRS, format 3 has
2bits TPC information, and format 3a only have 1bit TPC information.
Step one, network side configures TPC-SRS-RNTI to UE.
Step 2, when eNB carries transmission UE TPC information using PDCCH DCl format 3/3a,
PDCCH is scrambled by TPC-SRS-RNTI, and indicated using the parameter tpc-index of high-rise configuration
Which position corresponds to the TPC information of the UE.
Step 3, UE receives PDCCH, obtains the TPC information of oneself.
Compared with scheme two, in scheme three during the uplink SRS Power Control of SRS cells, issued with base station
TPC information it is related, UE carries out certain power adjustment according to the TPC information received.
In this alternative embodiment, the adjustment of SRS power can be related to parameters described below：UE emission maximum
The SRS initial powers P of power, cellO_SRS,c, SRS triggering type 0 or 1 power excursion, carrying SRS
RB quantity (or being described as SRS bandwidth), path loss and coefficient correlation αSRS,c、TPC.This reality
Applying example can support UE to carry out SRS Power Control in SRS cells.
The preferred embodiments of the present invention are these are only, are not intended to limit the invention, for this area
For technical staff, the present invention can have various modifications and variations.Within the spirit and principles of the invention,
Any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection.
Claims (13)
1. a kind of detection reference signal sending method, it is characterised in that including：
The power excursion P configured according at least to network sideSRS_OFFSET,cThe power P for sending the SRS is calculated with sent out detection reference signal SRS bandwidth, and one belowSRS：The SRS initial power parameters P of network side configurationO_SRS,c, network side configuration SRS initial powers and path loss coefficient correlation αSRS,c；
The P obtained using calculatingSRSSend the SRS.
2. according to the method described in claim 1, it is characterised in that the power excursion P configured using equation below according to network sideSRS_OFFSET,cWith the SRS initial power parameters P of sent out detection reference signal SRS bandwidth, and network side configurationO_SRS,cCalculate the power P for sending the SRSSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_SRS,c, wherein, i represents subframe.
3. according to the method described in claim 1, it is characterised in that the power excursion P configured using equation below according to network sideSRS_OFFSET,cWith the SRS initial powers and path loss coefficient correlation α of sent out detection reference signal SRS bandwidth, and network side configurationSRS,cCalculate the power P for sending the SRSSRS：
αSRS,c∈{0,0.4,0.5,0.6,0.7,0.8,0.9,1}
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+αSRS,c·PLc, wherein, i represents subframe.
4. according to the method described in claim 1, it is characterised in that the power excursion P configured according to network sideSRS_OFFSET,cWith the SRS initial powers and path loss coefficient correlation α of sent out detection reference signal SRS bandwidth, and network side configurationSRS,cCalculate the power P for sending the SRSSRSIncluding：
The power excursion P configured according to network sideSRS_OFFSET,c, send out detection reference signal SRS bandwidth, network side configuration SRS initial powers and path loss coefficient correlation αSRS,cAnd the corresponding function f of TPC of the SRS feedbacks in SRS cells are directed to by base stationSRS,c(i) power P for sending the SRS, is calculatedSRS。
5. method according to claim 4, it is characterised in that the power excursion P configured using below equation according to network sideSRS_OFFSET,c, send out detection reference signal SRS bandwidth, network side configuration SRS initial powers and path loss coefficient correlation αSRS,cAnd the corresponding function f of TPC of the SRS feedbacks in SRS cells are directed to by base stationSRS,c(i) power P for sending the SRS, is calculatedSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_PUSCH,c(j)+αc(j)·PLc+fSRS,c(i) }, wherein, i represents subframe.
6. the method according to claim 4 or 5, it is characterised in that methods described also includes：
The information for transmitting the TPC is carried by physical downlink control channel PDCCH.
7. method according to claim 6, it is characterised in that the information for carrying the transmission TPC by Physical Downlink Control Channel includes：
Base station is received after the SRS of SRS cells, and the SRS TPC is issued to user equipment by downstream grants, PDCCH DCI format3 or format 3a carryings.
8. method according to claim 7, it is characterised in that
When the TPC information is transmitted in the base station using PDCCH DCl format 3 or 3a carryings, the TPC-SRS-RNTI configured by network side is scrambled to PDCCH, and indicates which position corresponds to the TPC information of the user equipment using the parameter tpc-index of high level configuration.
9. a kind of detection reference signal dispensing device, it is characterised in that including：
Computing module, for the power excursion P configured according at least to network sideSRS_OFFSET,cThe power P for sending the SRS is calculated with sent out detection reference signal SRS bandwidth, and one belowSRS：The SRS initial power parameters P of network side configurationO_SRS,c, network side configuration SRS initial powers and path loss coefficient correlation αSRS,c；
Sending module, for the P obtained using calculatingSRSSend the SRS.
10. device according to claim 9, it is characterised in that the computing module is used for the power excursion P configured using equation below according to network sideSRS_OFFSET,cWith the SRS initial power parameters P of sent out detection reference signal SRS bandwidth, and network side configurationO_SRS,cCalculate the power P for sending the SRSSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_SRS,c, wherein, i represents subframe.
11. device according to claim 9, it is characterised in that the computing module is used for the power excursion P configured using equation below according to network sideSRS_OFFSET,cWith the SRS initial powers and path loss coefficient correlation α of sent out detection reference signal SRS bandwidth, and network side configurationSRS,cCalculate the power P for sending the SRSSRS：
αSRS,c∈{0,0.4,0.5,0.6,0.7,0.8,0.9,1}
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+αSRS,c·PLc, wherein, i represents subframe.
12. device according to claim 9, it is characterised in that the computing module is used for the power excursion P configured according to network sideSRS_OFFSET,c, send out detection reference signal SRS bandwidth, network side configuration SRS initial powers and path loss coefficient correlation αSRS,cAnd the corresponding function f of TPC of the SRS feedbacks in SRS cells are directed to by base stationSRS,c(i) power P for sending the SRS, is calculatedSRS。
13. device according to claim 12, it is characterised in that the computing module is used for the power excursion P configured using below equation according to network sideSRS_OFFSET,c, send out detection reference signal SRS bandwidth, network side configuration SRS initial powers and path loss coefficient correlation αSRS,cAnd the corresponding function f of TPC of the SRS feedbacks in SRS cells are directed to by base stationSRS,c(i) power P for sending the SRS, is calculatedSRS：
PSRS,c(i)=min { PCMAX,c(i),PSRS_OFFSET,c(m)+10log10(MSRS,c)+PO_PUSCH,c(j)+αc(j)·PLc+fSRS,c(i) }, wherein, i represents subframe.
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