CN103379603B - Power control information notice and circule power control method and equipment - Google Patents

Power control information notice and circule power control method and equipment Download PDF

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Publication number
CN103379603B
CN103379603B CN201210113191.3A CN201210113191A CN103379603B CN 103379603 B CN103379603 B CN 103379603B CN 201210113191 A CN201210113191 A CN 201210113191A CN 103379603 B CN103379603 B CN 103379603B
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srs
power control
control process
terminal
transmission
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CN103379603A (en
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陈文洪
高秋彬
彭莹
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201210113191.3A priority Critical patent/CN103379603B/en
Priority to PCT/CN2013/072939 priority patent/WO2013155914A1/en
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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
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/146—Uplink power control
    • 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
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • 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
    • H04W52/247—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters where the output power of a terminal is based on a path parameter sent by another terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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
    • H04W52/325—Power control of control or pilot channels

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

Abstract

The embodiment of the invention discloses a kind of power control information notice and circule power control method and equipment, relate to wireless communication technology field, the problem that the detection reference signal SRS for solving how to make terminal send disclosure satisfy that different measurement demands.In the present invention, base station is after determining the SRS power control process that terminal is used, SRS power control process terminal used notifies that, to terminal, terminal determines the uplink transmission power of SRS according to the SRS power control parameters that this SRS power control process is corresponding, and carries out SRS transmission according to this uplink transmission power.Using this programme, the SRS that terminal sends disclosure satisfy that different measurement demands.

Description

Power control information notice and circule power control method and equipment
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of power control information notice and circule power control method and equipment.
Background technology
At existing long-term evolution upgrading (LongTermEvolution-Advanced, LTE-A) in system, detection reference signal (SoundingReferenceSignal, SRS) may be used for the measurement of uplink signal-channel quality, thus carry out uplink scheduling, channel heterogeneite can also be utilized for obtaining descending channel information, thus carry out descending scheduling and transmission.At cooperative multipoint transmission (CooperativeMultiplePointTransmission, CoMP) in system, independence due to downstream transmission, uplink needs the channel measured and downlink transfer to need the channel information obtained to be often different, it is therefore desirable to carry out detecting the transmission point set that (sounding) measure the most different.For uplink, generally measuring point is all nearer transmission point, so SRS transmit power need not be the highest；And if metrical information is the selection for descending CoMP set, then needing large range of transmission point to measure, the SRS transmit power of measurement requirement also can be higher.
Remote radio-frequency heads (RemoteRadioHead, RRH) also known as far-end radio-frequency apparatus (RemoteRadioUnit, or long-distance radio frequency unit (RemoteRadioElement RRU), RRE), spaced antenna etc., it it is a radio frequency unit separated with baseband processing unit (BaseBandUnit, BBU).Generally RRH from BBU is placed on different geographical position.RRH includes radio circuit, modulus (A/D) modular converter, digital-to-analogue (D/A) modular converter and light delivery module.RRH is connected with BBU by optical fiber.Distributed RRH is a kind of network morphology utilizing RRH networking.RRH is dispersed in an Intra-cell, owing to the distance of distance users terminal (UE) is less, can provide high-quality communication service to terminal.Owing in a community, the data of all RRH are all focused on by BBU, this just brings possibility to the efficient collaboration, both between RRH, and the most distributed RRH becomes an important scene of CoMP research.The deployment of distributed RRH can be divided into two kinds according to or without macro station: without macro station and have macro station, has the uplink under the RRH deployment scenario of macro station and downlink transfer such as Fig. 1 a (different districts ID) and Fig. 1 b (same cells ID) shown.Wherein, the scene having macro station is usually the focus covering increasing RRH on existing network foundation to meet some areas.The RRH having macro station need not cover all positions, and therefore its geographical position is usually random (position occurred with focus is relevant).
In up (UL) CoMP transmission, receiving terminal can receive signal on multiple transmission points simultaneously, improves detection performance by receiving the merging of signal.Now, SRS may be used for the detection of up channel, on the one hand reception transmission point set is determined according to channel strength, on the other hand it is scheduling according to channel information, determine the order instruction (RankIndication of transmission, RI)/pre-coding matrix instruction (Pre-codingMatrixIndicator, PMI)/channel quality instruction (ChannelQualityIndicator, CQI) etc. measures parameter.Due to Physical Uplink Shared Channel (PhysicalUplinkSharedChannel, PUSCH) transmit power is unique, typically having only to several nearest transmission points and carry out the detection of channel, the transmit power of SRS has only to meet the measurement of these points.Such as in Fig. 1 a and Fig. 1 b, it is only necessary to two nearest RRH carry out sounding.
In descending (DL) CoMP transmission, base station utilizes measuring of uplink SRS to obtain descending channel information according to channel heterogeneite, these channel informations both may be used for scheduling, determine the cooperation set of UE, measuring assembly, transmission set and frequency domain resource and CQI, can be used for the check code (CheckSum of base station end, CS), Cell Broadcast CB (CellBroadcast, CB), the CoMP transmission such as Joint Predistortion (JointPredistortion, JP) operation.Because the transmit power of different transmission points may be different, the cooperation set of UE may cover bigger scope and more transmission point, if the measurement of SRS will be carried out on these transmission points, then SRS is needed to launch with bigger transmit power, the reliability that guarantee is measured.The most in fig 1 a, macro station and all RRH, in the cooperation set of UE1 and UE2, will carry out the detection of SRS.
At present standard exists two distinct types of SRS: cycle SRS and SRS aperiodic.The former needs the transmission cycle by base station configuration SRS and other parameters, and terminal is according to the transmission SRS of property information cycle of configuration；The latter is triggered by Physical Downlink Control Channel (PhysicalDownlinkControlChannel, PDCCH) by base station, and after triggering, terminal only sends a SRS.For SRS aperiodic, base station can be passed through the SRS triggering aperiodic signaling in Downlink Control Information (DownlinkControlInformation, DCI) form (format) 0/1A/2B/2C/4 and carry out the triggering of SRS aperiodic.SRS aperiodic that different DCIformat triggers can use different SRS parameter group, and these parameter group are configured respectively by high-level signaling, comprises parameters such as transmitting running time-frequency resource, cyclic shift that this aperiodic, SRS was used in parameter group.The corresponding relation of DCIformat and parameter group such as table 1 below:
Table 1
The uplink transmission power of SRS is obtained by following SRS transmit power computing formula:
PSRS, c(i)=min{PCMAX, c(i), PSRS_OFFSET, c(m)+10log10(MSRS, c)+PO_PUSCH, c(j)+αc(j)·PLc+fc(i)}
Wherein, PCMAXIt is the maximum transmit power of UE, PSRS_OFFSET, cM () is SRS transmit power adjusted value, indicate respectively cycle SRS and the adjusted value of SRS aperiodic during m=0 and m=1, poor in order to adjust the transmit power of PUSCH and SRS.Its span is determined by higher level parameters Ks, and as Ks=0, its step-length is 1.5dB, span is [-10.5,12], and as Ks=1.25, its step-length is 1dB, span is [-3,12], and value is notified by high-level signaling；MSRS is the transmission bandwidth of SRS, PO_PUSCHJ () is cell broadcast parameters PO_Nominal_PUSCHJ high-rise power control parameters P that () and UE are specialO_UE_PUSCHThe sum of (j), PL is that descending path loss is estimated, measured by UE end and obtain, its value is the community exclusive pilot signal (Cell-specificreferencesignals of descending base station, CRS) Reference Signal Received Power (Referencesignalreceivedpower that transmit power and UE report, RSRP) ratio, f (i) is the power control parameters of closed loop, obtained by the transmission power control order (TPC command) in Downlink Control Information (DownlinkControlInformation, DCI) form (format) 0/4/3/3A.F (i) can be accumulated value can also be absolute value.Wherein, the parameter used by closed-loop power control is mainly PO_UE_PUSCH(j) and f (j).The former is notified by high-level signaling, can carry out quasi-static power control, a length of 4 bits, and scope is [-7,8], and step-length is 1dB.The latter is signaled by PDCCH, can be the accumulated value to a front value, i.e. f (i)=f (i-1)+δPUSCH, it is also possible to be absolute value, i.e. f (i)=δPUSCH.The δ that in different DCIformat, the TPC of instruction obtainsPUSCHValue is different, as shown in table 2 below:
Table 2
In order to meet different measurement demands, particularly meet the measurement demand of DLCoMP, have following several SRS power control Enhancement Method at present:
First, introduce special closed-loop power control parameter f of SRSsrs(i).By the TPC command that corresponding SRS is special, SRS can be carried out independent power and adjust, thus not controlled to be affected by PUSCH power.Now, SRS transmit power computing formula should change to:
PSRS, c(i)=min{PCMAX, c(i), PSRS_OFFSET, c(m)+10log10(MSRS, c)+PO_PUSCH, c(j)+αc(j)·PL+fsrs, c(i)}
Second, another kind of admissible method is introduced into the similar P that SRS is specialO_PUSCHcTarget power value P of (j)O_SRSc(j), or introduce and αcJ α special for SRS that () is similarSRS, c(j), thus obtain the power with PUSCH independence and control.Here special for SRS power control parameters power control parameters corresponding with PUSCH in formula is identical, but by independent parameter configuration.
3rd, in order to descending path loss measurement result is adjusted to target as a result, it is possible to introduce path loss offset parameter Δ PL, to be adjusted current descending path loss measurement result, the SRS transmit power computing formula after adjustment changes to:
PSRS, c(i)=min{PCMAX, c(i)), PSRS_OFFSET, c(m)+10log10(MSRS, c)+PO_PUSCH, c(j)+αc(j)·(PLc+ΔPL)+fSrs, c(i)}
To sum up, in CoMP system, uplink is different to the demand of SRS transmit power with downlink transfer, how to meet different measurement demands, is the problem that solution is presently required.
Summary of the invention
The embodiment of the present invention provides a kind of power control information notice and circule power control method and equipment, the problem that the SRS for solving how to make terminal send disclosure satisfy that different measurement demands.
A kind of Notification Method of power control information, the method includes:
Base station determines, from the multiple detection reference signal SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal；
The SRS power control process that base station is used by downlink signaling notice terminal.
A kind of Poewr control method, the method includes:
Terminal receives the notice of the SRS power control process used that base station sends；
Terminal obtains the SRS power control parameters that described SRS power control process is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters, and carries out SRS transmission according to this uplink transmission power.
A kind of base station, this base station includes:
Determine unit, for determining, from the multiple detection reference signal SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal；
Notification unit, for the SRS power control process used by downlink signaling notice terminal.
A kind of terminal, this terminal includes:
Receive unit, for receiving the notice of the SRS power control process used that base station sends；
Power control unit, for obtaining the SRS power control parameters that described SRS power control process is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters；
Transmission unit, for carrying out SRS transmission according to described uplink transmission power.
In this programme, base station is after determining the SRS power control process that terminal is used, SRS power control process terminal used notifies that, to terminal, terminal determines the uplink transmission power of SRS according to the SRS power control parameters that this SRS power control process is corresponding, and carries out SRS transmission according to this uplink transmission power.Visible, use this programme, according to different measurement demands, base station can determine that terminal uses different SRS power control processes, and the SRS power control process determined is notified to terminal, make terminal can carry out the power control of SRS according to the SRS power control parameters that the SRS power control process of notice is corresponding, and then the SRS that terminal is sent disclosure satisfy that different measurement demands.
Accompanying drawing explanation
Fig. 1 a is the uplink under RRH scene of the prior art and downlink transfer schematic diagram；
Fig. 1 b is the uplink under another RRH scene of the prior art and downlink transfer schematic diagram；
The method flow schematic diagram that Fig. 2 provides for the embodiment of the present invention；
The other method schematic flow sheet that Fig. 3 provides for the embodiment of the present invention；
The device structure schematic diagram that Fig. 4 provides for the embodiment of the present invention；
Another device structure schematic diagram that Fig. 5 provides for the embodiment of the present invention.
Detailed description of the invention
So that the SRS that terminal sends disclosure satisfy that different measurement demands, the embodiment of the present invention provides a kind of power control information notice and circule power control method, in this method, the SRS power control process that base station notice terminal is used, terminal then determines the uplink transmission power of SRS according to the SRS power control parameters that this SRS power control process is corresponding, and carries out SRS transmission according to this uplink transmission power.
See Fig. 2, the Notification Method of a kind of power control information that the embodiment of the present invention provides for base station side, comprise the following steps:
Step 20: base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal；
Step 21: the SRS power control process that base station is used by downlink signaling notice terminal.
Further, before step 20, base station can be that terminal configures multiple SRS power control processes by high-level signaling, the corresponding one group of SRS power control parameters of each SRS power control process of configuration.SRS power control parameters is the parameter used in SRS transmit power computing formula.
Concrete, SRS power control parameters includes at least one in following parameter:
SRS transmit power adjusted value PSRS_OFFSET, c(m)；
Target power value P that PUSCH power control is usedO_PUSCHcJ target power value P that () or SRS are specialO_SRS, c(j)；
Road loss compensation factor α used by PUSCH power controlcJ road loss compensation factor α that () or SRS are specialSRS, c(j)；
Path loss offset parameter Δ PL；
Terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used；Wherein, it can be index (the design parameter information that each index is corresponding is indicated by other high-level signalings) corresponding to this reference signal that terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used, it is also possible to be the design parameter information such as the power of this reference signal, running time-frequency resource；
PUSCH closed-loop power control parameter fcI closed-loop power control parameter f that () or SRS are specialSRS, c(i)。
Concrete, base station is the SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, parameter corresponding with PUSCH power control is identical, such as, and the P that SRS power control parameters corresponding to this SRS power control process is identical with PUSCH power control employingO_PUSCH, c(j)、αc(j)、PLcAnd fc(i)；And/or,
Base station is at least one SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, different with corresponding parameter in PUSCH power control, including the most different or part difference.
It is also preferred that the left before step 20, base station can configure the priority of each SRS power control process in multiple SRS power control processes to terminal, or the priority of each SRS power control process in multiple SRS power control processes is arranged with terminal in base station.Base station can be while configuring multiple SRS power control processes to terminal, the priority of each SRS power control process in multiple SRS power control processes is configured to terminal, or, after configuring multiple SRS power control processes to terminal, configure the priority of each SRS power control process in multiple SRS power control processes to terminal.
As a kind of embodiment, in step 20, base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, is implemented as follows:
Base station determines and is currently needed for utilizing SRS to measure uplink channel information or descending channel information, if desired uplink channel information is measured, then determine in advance for the SRS power control process corresponding with uplink in multiple SRS power control processes of terminal configuration, the SRS power control process used as terminal；If desired descending channel information is measured, it is determined that in advance for the SRS power control process corresponding with downlink transfer in multiple SRS power control processes of terminal configuration, the SRS power control process used as terminal.
As another embodiment, in step 20, base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, it is implemented as follows: base station is the SRS resource of configuration, determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process uses this SRS resource to be used when carrying out SRS transmission as terminal；Concrete, base station can be each SRS resource of configuration, determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process uses this SRS resource to be used when carrying out SRS transmission as terminal respectively；Or, base station determines a SRS power control process from multiple SRS power control processes for terminal configuration in advance, uses, as terminal, the SRS power control process that each SRS resource used when carrying out SRS transmission.
Accordingly, in step 21, the SRS power control process that base station is used by downlink signaling notice terminal, it is implemented as follows:
The information bit that base station is independent in the Downlink Control Information (DCI) by high-level signaling or Physical Downlink Control Channel (PDCCH), notice terminal uses the SRS resource configured to carry out the SRS power control process used during SRS transmission.One can be used signal, it would however also be possible to employ a plurality of signal herein.
As another embodiment, in step 20, base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, is implemented as follows: base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out SRS transmission as terminal；Accordingly, in step 21, the SRS power control process that base station is used by downlink signaling notice terminal, it is implemented as follows: the information bit that base station is independent in the DCI by high-level signaling or PDCCH, notice terminal carries out the SRS power control process used during SRS transmission.This embodiment is determining that SRS power control process is unrelated with SRS resource.
Concrete, SRS resource includes but not limited to: the running time-frequency resource of SRS, cyclic shift and SRS port.SRS transmission includes cycle SRS transmission and/or aperiodic SRS transmission.
Further, when independent in base station is by the DCI of PDCCH information bit notice SRS power control process and SRS transmission include aperiodic SRS transmission, aperiodic SRS transmission that this aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
As another embodiment, in step 20, base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, is implemented as follows:
Base station, for SRS parameter group corresponding for the DCIformat that can trigger aperiodic SRS transmission, determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；Concrete, base station can determine, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal respectively for each SRS parameter group corresponding for the DCIformat that can trigger aperiodic SRS transmission；Or, base station, for all SRS parameter group corresponding for the DCIformat that can trigger aperiodic SRS transmission, determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal.
Accordingly, in step 21, the SRS power control process that base station is used by downlink signaling notice terminal, it is implemented as follows:
Base station is associated with described SRS parameter group by high-level signaling notice terminal, the SRS power control process that used when carrying out aperiodic SRS transmission.
Concrete, aperiodic SRS transmission that described aperiodic SRS transmission is triggered by the DCIformat that described SRS parameter group is corresponding or all aperiodic SRS transmission.
Here, the corresponding relation of SRS parameter group and DCIformat may refer to table 1, comprises the parameters such as the transmission running time-frequency resource that SRS is used aperiodic, cyclic shift in SRS parameter group.
As in another embodiment, step 20, base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, is implemented as follows:
Base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；
Accordingly, in step 21, the SRS power control process that base station is used by downlink signaling notice terminal, it is implemented as follows:
Base station by the DCI of PDCCH aperiodic SRS triggering bit, notice terminal carries out the SRS power control process used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic.
Concrete, aperiodic SRS transmission that described aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
See Fig. 3, the Poewr control method that the embodiment of the present invention provides for end side, comprise the following steps:
Step 30: terminal receives the notice of the SRS power control process used that base station sends；
Step 31: terminal obtains the SRS power control parameters that described SRS power control process is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters, and carries out SRS transmission according to this uplink transmission power.
Further, before terminal receives the notice of the SRS power control process used that base station sends, terminal receives multiple SRS power control processes that base station is configured by high-level signaling, the corresponding one group of SRS power control parameters of each SRS power control process of configuration.
Concrete, described SRS power control parameters includes at least one in following parameter:
SRS transmit power adjusted value PSRS_OFFSET, c(m)；
Target power value P that Physical Uplink Shared Channel PUSCH power control is usedO_PUSCH, cJ target power value P that () or SRS are specialO_SRS, c(j)；
Road loss compensation factor α used by PUSCH power controlcJ road loss compensation factor α that () or SRS are specialSRS, c(j)；
Path loss offset parameter Δ PL；
Terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used；Wherein, it can be index (the design parameter information that each index is corresponding is indicated by other high-level signalings) corresponding to this reference signal that terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used, it is also possible to be the design parameter information such as the power of this reference signal, running time-frequency resource；
PUSCH closed-loop power control parameter fcI closed-loop power control parameter f that () or SRS are specialSRS, c(i)。
Concrete, base station is the SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, identical with corresponding parameter in PUSCH power control；And/or,
Base station is at least one SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, different with corresponding parameter in PUSCH power control.
As a kind of embodiment, in step 30, terminal receives the notice of the SRS power control process used that base station sends, and is implemented as follows:
Terminal receives information bit independent in the DCI by high-level signaling or PDCCH of the base station, and the terminal of transmission uses the SRS resource of configuration to carry out the notice of the SRS power control process used during SRS transmission.
Accordingly, in step 31, terminal carries out SRS transmission according to this uplink transmission power, is implemented as follows: terminal is in described SRS resource enterprising line period SRS transmission and/or aperiodic SRS transmission.
As another embodiment, in step 30, terminal receives the notice of the SRS power control process used that base station sends, it is implemented as follows: terminal receives information bit independent in the DCI by high-level signaling or PDCCH of the base station, and the terminal of transmission carries out the notice of the SRS power control process used during SRS transmission.Accordingly, in step 31, terminal carries out cycle SRS transmission and/or aperiodic SRS transmission according to described uplink transmission power.
Concrete, SRS resource includes but not limited to: the running time-frequency resource of SRS, cyclic shift and SRS port.
Further, receive base station in terminal and pass through information bit independent in the DCI of PDCCH, the terminal sent carries out the notice of SRS power control process that used during SRS transmission and time described SRS transmission includes aperiodic SRS transmission, aperiodic SRS transmission that this aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
As in another embodiment, step 30, terminal receives the notice of the SRS power control process used that base station sends, and is implemented as follows:
Terminal receive that the SRS parameter group corresponding with the DCIformat that can trigger SRS aperiodic that base station sends by high-level signaling associates, carry out the SRS power control process that used during aperiodic SRS transmission.
Accordingly, in step 31, being implemented as follows of the SRS power control parameters that terminal acquisition SRS power control process is corresponding:
Terminal, after receiving the DCI triggering aperiodic SRS transmission that base station sends, according to SRS parameter group corresponding for the DCIformat of the DCI received, obtains the SRS power control process of the SRS parameter group association corresponding with this DCIformat；And obtain the SRS power control parameters that this SRS power control process is corresponding；
Terminal carries out SRS transmission according to this uplink transmission power, is implemented as follows:
Terminal carries out, according to this uplink transmission power, the aperiodic SRS transmission that DCIformat corresponding to described SRS parameter group is triggered, or carries out all of aperiodic SRS transmission according to this uplink transmission power.
As another embodiment, in step 30, terminal receives the notice of the SRS power control process used that base station sends, and is implemented as follows:
Terminal receive base station by the DCI of PDCCH aperiodic SRS triggering bit, the terminal sent carries out the notice of the SRS power control process used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic.
Accordingly, in step 31, terminal carries out SRS transmission according to this uplink transmission power, is implemented as follows:
Terminal carries out, according to this uplink transmission power, the aperiodic SRS transmission that described DCI is triggered, or carries out all of aperiodic SRS transmission according to this uplink transmission power.
In step 31, terminal, when determining the uplink transmission power of SRS according to this SRS power control parameters, specifically brings this SRS power control parameters into SRS transmit power computing formula, is calculated the uplink transmission power of SRS according to this SRS transmit power computing formula.
Wherein, terminal when determining the uplink transmission power of SRS according to SRS power control parameters, if SRS power control parameters comprises UE carries out the configuration parameter of the reference signal that descending path loss measurement is used, then need according to this configuration parameter, carry out the measurement of descending circuit loss value PL based on this reference signal, descending circuit loss value PL obtained according to measurement determines the uplink transmission power of SRS.
Particularly, the method determining used SRS power control process if the corresponding multiple different SRS power control processes of identical SRS resource, terminal and base station needs are made an appointment, the method includes:
Use the SRS power control process that the uplink transmission power of corresponding SRS is higher；Or,
Use the SRS power control process that the uplink transmission power of corresponding SRS is relatively low；Or,
Base station and UE arrange the priority of multiple SRS power control processes, use the SRS power control process that priority is higher, i.e. terminal is according to the priority of the multiple SRS power control processes made an appointment with base station, selects the SRS power control process that priority is higher as current SRS power control process；Or,
The priority of multiple SRS power control processes that terminal is pre-configured with according to base station, selects the SRS power control process that priority is higher as current SRS power control process；Or,
Terminal does not carry out SRS transmission in corresponding SRS resource.
Below in conjunction with specific embodiment, the present invention will be described:
Embodiment one:
Step one: base station is that UE configures multiple SRS power control processes, the corresponding one group of SRS power control parameters of each SRS power control process of configuration；UE receives multiple SRS power control processes of base station configuration and the SRS power control parameters that each SRS power control process is corresponding；
Concrete, base station is that UE configures two SRS power control processes, the SRS power control parameters of one of them SRS power control process (process 1) correspondence is the SRS power control parameters in Current protocol, and use the SRS transmit power computing formula in Current protocol, the SRS power control parameters that another SRS power control process (process 2) is corresponding comprises the following parameter different from process 1:
SRS transmit power adjusted value PSRS_OFFSET, c(m)；
Closed-loop power control parameter f special for SRSSRS, cI () replaces fc(i)；
Other SRS power control parameters are identical with process 1, and these SRS power control parameters are all configured by high-level signaling.
Base station and terminal agreement, if corresponding two the different SRS power control processes of identical SRS resource, then use the SRS power control process that the uplink transmission power of the SRS of correspondence is higher.
Step 2: base station is the SRS resource of configuration, determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process uses this SRS resource to be used when carrying out SRS transmission as terminal；And use the SRS resource configured to carry out the SRS power control process used during SRS transmission by high-level signaling notice terminal；
Concrete, base station uses a cycle SRS resource of configuration (comprise the SRS cycle and sub-frame offset configures) by high-level signaling notice UE, the SRS power control process used during the cycle of carrying out SRS transmission is SRS power control process 1, and using another cycle SRS resource (comprising SRS cycle and sub-frame offset configuration) configured, the SRS power control process carrying out being used during cycle SRS transmission is SRS power control process 2；
Step 3: UE receives the notice of the SRS power control process that base station uses the SRS resource of configuration to be used when carrying out SRS transmission by the UE that high-level signaling sends；
Step 4: UE obtains the SRS power control parameters that the SRS power control process notified is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters, and carries out SRS transmission according to this uplink transmission power.
UE controls at when notifying laggard line period SRS transmission of base station of reception, the power using corresponding SRS power control process to carry out SRS in the SRS resource that the different SRS cycles is corresponding with sub-frame offset configuration.Concrete, for the SRS resource that certain SRS cycle is corresponding with sub-frame offset configuration, UE determines the SRS power control process that this SRS resource is corresponding, the transmit power computing formula that SRS power control parameters corresponding for this SRS power control process substitutes into SRS obtains the uplink transmission power of SRS, thus in this SRS resource enterprising line period SRS transmission.
If two SRS resource have the part of coincidence, the most corresponding two the SRS power control processes of SRS resource meeting of coincidence, that SRS power control process that the uplink transmission power of correspondence is higher should be used when now carrying out SRS transmission in the SRS resource overlapped.
Embodiment two:
Step one: base station is that UE configures multiple SRS power control processes, the corresponding one group of SRS power control parameters of each SRS power control process of configuration；UE receives multiple SRS power control processes of base station configuration and the SRS power control parameters that each SRS power control process is corresponding；
Concrete, base station is that UE configures two SRS power control processes, the SRS power control parameters of one of them SRS power control process (process 1) correspondence is the SRS power control parameters in Current protocol, and use the SRS transmit power computing formula in Current protocol, the SRS power control parameters that another SRS power control process (process 2) is corresponding comprises the following parameter different from process 1:
SRS transmit power adjusted value PSRS_OFFSET, c(m)；
Closed-loop power control parameter f special for SRSSRS, cI () replaces fc(i)；
UE carries out the index of the reference signal used by descending path loss measurement；(the design parameter information that index is corresponding is configured by other high-level signalings)；
Other SRS power control parameters are identical with process 1, and these SRS power control parameters are all configured by high-level signaling.
Base station and terminal agreement, if corresponding two the different SRS power control processes of identical SRS resource, then use the SRS power control process that the uplink transmission power of the SRS of correspondence is higher.
Step 2: base station is the SRS resource of configuration, determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process uses this SRS resource to be used when carrying out SRS transmission as terminal；And by information bit independent in the DCI of PDCCH, notice UE uses the SRS resource configured to carry out the SRS power control process used during SRS transmission；
Concrete, information bit independent in DCI is 1 information bit, and this SRS power control process may be used for all of aperiodic SRS transmission (until having next instruction to change this configuration).
Step 3: UE receives base station and carries out the notice of the SRS power control process used during SRS transmission by information bit independent in DCI, the SRS resource of the UE use configuration of transmission；
Step 4: UE obtains the SRS power control parameters that the SRS power control process notified is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters, and carries out SRS transmission according to this uplink transmission power.
Concrete, if the SRS power control process of notice is process 1, then corresponding SRS power control mechanism is identical with the SRS power control mechanism in current agreement and parameter with parameter；If using process 2, then use the UE being pre-configured with to carry out the reference signal used by descending path loss measurement and obtain descending circuit loss value, then by the SRS transmit power adjusted value P corresponding to process 2SRS_OFFSET, c(m) and fSRS, cI parameters such as () and the circuit loss value that obtains substitute into the transmit power computing formula of SRS and obtain the uplink transmission power of SRS, carry out aperiodic SRS transmission in corresponding SRS resource.
If the aperiodic SRS transmission that two or more DCI are triggered corresponds in identical SRS resource, and the SRS power control process indicating these aperiodic SRS transmission to be used according to base station is identical, then use this SRS power control process to carry out the power control of SRS.If indicating the power control process that these aperiodics, SRS was used different, when now carrying out aperiodic SRS transmission in corresponding SRS resource according to base station, it should that SRS power control process using corresponding uplink transmission power higher carries out power control.
Embodiment three:
Step one: base station is that UE configures multiple SRS power control processes, the corresponding one group of SRS power control parameters of each SRS power control process of configuration；UE receives multiple SRS power control processes of base station configuration and the SRS power control parameters that each SRS power control process is corresponding；
Concrete, base station is that UE configures two SRS power control processes, the SRS power control parameters of one of them SRS power control process (process 1) correspondence is the SRS power control parameters in Current protocol, and use the SRS transmit power computing formula in Current protocol, the SRS power control parameters that other SRS power control processes (process 2) are corresponding comprises the following parameter different from process 1:
SRS transmit power adjusted value PSRS_OFFSET, c(m)；
Closed-loop power control parameter f special for SRSSRS, cI () replaces fc(i)；
Other SRS power control parameters are identical with process 1, and these SRS power control parameters are all configured by high-level signaling.
The priority of each SRS power control process, the such as priority of process 2 are the most also arranged higher than process 1 in base station with UE.
Step 2: base station, for SRS parameter group corresponding for the DCIformat that can trigger aperiodic SRS transmission, determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；And by high-level signaling notice UE for SRS parameter group, carry out aperiodic SRS transmission time the SRS power control process that used；UE receives this notice.
Concrete, base station is for the SRS parameter group corresponding for DCIformat of various triggering aperiodic SRS transmission, determine a SRS power control process respectively, and by the high-level signaling of 1 bit, SRS power control process (process 1 or process 2) corresponding for this SRS parameter group is notified to UE.
Step 3: base station is triggered UE by the DCI of PDCCH and carried out aperiodic SRS transmission；
After step 4: UE receives the DCI of triggering aperiodic SRS transmission of base station, determining the SRS parameter group corresponding for DCIformat of this DCI, the notice received further according to step 2 determines the SRS power control process that this SRS parameter group is corresponding.Obtain the SRS power control parameters that this SRS power control process is corresponding, determine the uplink transmission power of SRS according to this SRS power control parameters, and carry out SRS transmission according to this uplink transmission power.
Concrete, by SRS power control parameters corresponding for this SRS power control process, substitute into SRS transmit power computing formula, obtain the uplink transmission power of SRS, and carry out, according to this uplink transmission power, the aperiodic SRS transmission that this DCI is triggered.
If the corresponding identical SRS resource of aperiodic SRS transmission that two or more DCI are triggered, and the SRS power control process indicating these aperiodic SRS transmission to be used according to base station is identical, then use this SRS power control process to carry out the power control of SRS.If it is different, when now carrying out aperiodic SRS transmission in corresponding SRS resource according to the SRS power control process that base station indicates these aperiodic SRS transmission to be used, it should that SRS power control process using priority higher carries out power control.If such as process 1 and process 2 are all triggered in same subframe, and use identical SRS resource, then the SRS power control parameters of process 2 correspondence should be used to carry out SRS power control.
Embodiment four:
Step one: base station is that UE configures multiple SRS power control processes, the corresponding one group of SRS power control parameters of each SRS power control process of configuration；UE receives multiple SRS power control processes of base station configuration and the SRS power control parameters that each SRS power control process is corresponding；
Concrete, base station is that UE configures three SRS power control processes, the SRS power control parameters of one of them power control SRS process (process 1) correspondence is the SRS power control parameters in Current protocol, and use the SRS transmit power computing formula in Current protocol, the SRS power control parameters that other processes (process 2 and 3) are corresponding comprises the following parameter different from process 1:
SRS transmit power adjusted value PSRS_OFFSET, c(m)；
Target power P special for SRSO_SRS, cJ () replaces PO_PUSCH, c(j)；
Closed-loop power control parameter f special for SRSSRS, cI () replaces fc(i)；
Other SRS power control parameters are identical with process 1, and these SRS power control parameters are all configured by high-level signaling.
Base station also with and UE agreement, if corresponding two the different SRS power control processes of identical SRS resource, then use the SRS power control process that the uplink transmission power of the SRS of correspondence is higher.
Step 2: base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；And by the DCI of PDCCH aperiodic SRS triggering bit, notice UE carries out the SRS power control process used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic.
Concrete, the instruction information of aperiodic trigger message and SRS power control process is carried out combined coding by base station, by DCI 2 bits aperiodic SRS triggering bit, trigger UE and carry out aperiodic SRS transmission and indicate used SRS power control process.The instruction content such as table 3 below triggering bit of this 2 bit:
Table 3
Step 3: UE receive base station by DCI aperiodic SRS triggering bit, the UE sent carries out the notice of the SRS power control process used during aperiodic SRS transmission, knows used SRS power control process according to the instruction information of the SRS power control process comprised in this triggering bit.UE obtains the SRS power control parameters that this SRS power control process is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters, and carries out aperiodic SRS transmission according to this uplink transmission power.
Concrete, by SRS power control parameters corresponding for this SRS power control process, substitute into SRS transmit power computing formula, obtain the uplink transmission power of SRS, and carry out, according to this uplink transmission power, the aperiodic SRS transmission that this DCI is triggered.
If the aperiodic SRS transmission that two or more DCI are triggered corresponds to identical SRS resource, and indicate the SRS power control process that these aperiodic SRS transmission are used different according to base station, when now carrying out aperiodic SRS transmission in corresponding SRS resource, that SRS power control process using corresponding SRS uplink transmission power higher carries out power control.If such as process 1 and process 3 are all triggered in same subframe, and use identical SRS resource, if the uplink transmission power of the SRS then obtained according to the SRS power control parameters of process 3 correspondence is relatively big, the SRS power control parameters of process 3 correspondence just should be used to carry out SRS power control.
Seeing Fig. 4, the embodiment of the present invention provides a kind of base station, and this base station includes:
Determine unit 40, for determining, from the multiple detection reference signal SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal；
Notification unit 41 yuan, for the SRS power control process used by downlink signaling notice terminal.
Further, this base station also includes:
First dispensing unit 42, for before determining, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, it is that terminal configures multiple SRS power control processes by high-level signaling, the corresponding one group of SRS power control parameters of each SRS power control process of configuration.
Further, described SRS power control parameters includes at least one in following parameter:
SRS transmit power adjusted value PSRS_OFFSET, c(m)；
Target power value P that Physical Uplink Shared Channel PUSCH power control is usedO_PUSCH, cJ target power value P that () or SRS are specialO_SRS, c(j)；
Road loss compensation factor α used by PUSCH power controlcJ road loss compensation factor α that () or SRS are specialSRS, c(j)；
Path loss offset parameter Δ PL；
Terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used；
PUSCH closed-loop power control parameter fcI closed-loop power control parameter f that () or SRS are specialSRS, c(i)。
Further, base station is the SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, identical with corresponding parameter in PUSCH power control；And/or,
Base station is at least one SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, different with corresponding parameter in PUSCH power control.
Further, this base station also includes:
Second dispensing unit 43, for configuring the priority of each SRS power control process in the plurality of SRS power control process to terminal, or the priority of each SRS power control process in the plurality of SRS power control process is arranged with terminal in base station.
Further, described determine unit 40 for:
For the SRS resource of configuration, determine, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process uses this SRS resource to be used when carrying out SRS transmission as terminal；
Described notification unit 41 is used for:
By information bit independent in the Downlink Control Information DCI of high-level signaling or physical downlink control channel PDCCH, notice terminal uses the SRS resource configured to carry out the SRS power control process used during SRS transmission.
Further, described determine unit 40 for:
Determine, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out SRS transmission as terminal；
Described notification unit 41 is used for: information bit independent in the DCI by high-level signaling or PDCCH, and notice terminal carries out the SRS power control process used during SRS transmission.
Further, described SRS resource includes: the running time-frequency resource of SRS, cyclic shift and SRS port.
Further, described SRS transmission includes cycle SRS transmission and/or aperiodic SRS transmission.
Further, when in described notification unit 41 is by the DCI of PDCCH, independent information bit notice SRS power control process and described SRS transmission include aperiodic SRS transmission, aperiodic SRS transmission that this aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
Further, described determine unit 40 for:
For the SRS parameter group that DCI format format that can trigger aperiodic SRS transmission is corresponding, determine, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；
Described notification unit 41 is used for:
Associated with described SRS parameter group by high-level signaling notice terminal, the SRS power control process that used when carrying out aperiodic SRS transmission.
Further, described aperiodic SRS transmission is triggered by the DCIformat that described SRS parameter group is corresponding aperiodic SRS transmission or all aperiodic SRS transmission.
Further, described determine unit 40 for:
Determine, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；
Described notification unit 41 is used for:
By in the DCI of PDCCH aperiodic SRS triggering bit, notice terminal carries out the SRS power control process that used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic.
Further, described aperiodic SRS transmission is triggered by this DCI aperiodic SRS transmission or all aperiodic SRS transmission.
Seeing Fig. 5, the embodiment of the present invention provides a kind of terminal, and this terminal includes:
Receive unit 50, for receiving the notice of the SRS power control process used that base station sends；
Power control unit 51, for obtaining the SRS power control parameters that described SRS power control process is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters；
Transmission unit 52, for carrying out SRS transmission according to described uplink transmission power.
Further, described reception unit 50 is additionally operable to:
Before receiving the notice of the SRS power control process used that base station sends, receive multiple SRS power control processes that base station is configured by high-level signaling, the corresponding one group of SRS power control parameters of each SRS power control process of configuration.
Further, described SRS power control parameters includes at least one in following parameter:
SRS transmit power adjusted value PSRS_OFFSET, c(m)；
Target power value P that Physical Uplink Shared Channel PUSCH power control is usedO_PUSCH, cJ target power value P that () or SRS are specialO_SRS, c(j)；
Road loss compensation factor α used by PUSCH power controlcJ road loss compensation factor α that () or SRS are specialSRS, c(j)；
Path loss offset parameter Δ PL；
Terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used；
PUSCH closed-loop power control parameter fcI closed-loop power control parameter f that () or SRS are specialSRS, c(i)。
Further, base station is the SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, identical with corresponding parameter in PUSCH power control；And/or,
Base station is at least one SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, different with corresponding parameter in PUSCH power control.
Further, described power control unit 51 is used for:
When described SRS power control parameters includes the configuration parameter that terminal carries out the reference signal that descending path loss measurement is used, according to the configuration parameter carrying out the reference signal that descending path loss measurement is used, carry out the measurement of descending circuit loss value based on described reference signal, the descending circuit loss value obtained according to measurement determines the uplink transmission power of SRS.
Further, described reception unit 50 is used for:
Receiving information bit independent in the DCI by high-level signaling or PDCCH of the base station, the terminal of transmission uses the SRS resource of configuration to carry out the notice of the SRS power control process used during SRS transmission；
Described transmission unit 52 is used for:
In described SRS resource enterprising line period SRS transmission and/or aperiodic SRS transmission.
Further, described reception unit 50 is used for:
Receiving information bit independent in the DCI by high-level signaling or PDCCH of the base station, the terminal of transmission carries out the notice of the SRS power control process used during SRS transmission；
Described transmission unit 52 is used for: terminal carries out cycle SRS transmission and/or aperiodic SRS transmission according to described uplink transmission power.
Further, described SRS resource includes: the running time-frequency resource of SRS, cyclic shift and SRS port.
Further, receive base station at described reception unit 50 and pass through information bit independent in the DCI of PDCCH, the terminal sent carries out the notice of SRS power control process that used during SRS transmission and time described SRS transmission includes aperiodic SRS transmission, aperiodic SRS transmission that this aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
Further, described reception unit 50 is used for:
SRS power control process that receive associating with described SRS parameter group of being sent by high-level signaling of base station, that used when carrying out aperiodic SRS transmission；
Described power control list 51 yuan is used for: receives the DCI triggering aperiodic SRS transmission that base station sends, according to SRS parameter group corresponding for the DCIformat of described DCI, obtains the SRS power control process associated with described SRS parameter group；And obtain the SRS power control parameters that this SRS power control process is corresponding；
Described transmission unit 52 is used for:
Carry out, according to this uplink transmission power, the aperiodic SRS transmission that DCIformat corresponding to described SRS parameter group is triggered, or carry out all of aperiodic SRS transmission according to this uplink transmission power.
Further, described reception unit 50 is used for:
Receive base station by the DCI of PDCCH aperiodic SRS triggering bit, the terminal sent carries out the notice of the SRS power control process used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic；
Described transmission unit 52 is used for:
Carry out, according to this uplink transmission power, the aperiodic SRS transmission that described DCI is triggered, or carry out all of aperiodic SRS transmission according to this uplink transmission power.
Described power control unit 51 is additionally operable to:
If the corresponding multiple SRS power control processes differed of identical SRS resource, the then priority of the plurality of SRS power control process being pre-configured with according to base station, select the SRS power control process that priority is higher as current SRS power control process；Or,
According to the priority of the plurality of SRS power control process made an appointment with base station, select the SRS power control process that priority is higher as current SRS power control process；Or,
In described SRS resource, do not carry out SRS transmission.
To sum up, the beneficial effect comprise that
In the scheme that the embodiment of the present invention provides, base station is after determining the SRS power control process that terminal is used, SRS power control process terminal used notifies to terminal, terminal determines the uplink transmission power of SRS according to the SRS power control parameters that this SRS power control process is corresponding, and carries out SRS transmission according to this uplink transmission power.Visible, use this programme, according to different measurement demands, base station can determine that terminal uses different SRS power control processes, and the SRS power control process determined is notified to terminal, make terminal can carry out the power control of SRS according to the SRS power control parameters that the SRS power control process of notice is corresponding, and then the SRS that terminal is sent disclosure satisfy that different measurement demands.
The present invention is to describe with reference to method, equipment (system) and the flow chart of computer program according to embodiments of the present invention and/or block diagram.It should be understood that can be by the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces the manufacture including command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to perform sequence of operations step on computer or other programmable devices to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides the step of the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame for realization.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creative concept, then these embodiments can be made other change and amendment.So, claims are intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification without departing from the spirit and scope of the present invention to the present invention.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.

Claims (48)

1. the Notification Method of a power control information, it is characterised in that the method includes:
Base station determines, according to measurement demand, the SRS power control process that a SRS power control process is used as terminal from advance by multiple detection reference signal SRS power control processes of terminal configuration, the corresponding one group of SRS power control parameters of each SRS power control process；
The SRS power control process that base station is used by downlink signaling notice terminal.
2. the method for claim 1, it is characterised in that before base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, farther include:
Base station is that terminal configures multiple SRS power control processes by high-level signaling.
3. method as claimed in claim 2, it is characterised in that described SRS power control parameters includes at least one in following parameter:
SRS transmit power adjusted value PSRS_OFFSET,c(m)；
Target power value P that Physical Uplink Shared Channel PUSCH power control is usedO_PUSCH,cJ target power value P that () or SRS are specialO_SRS,c(j)；
Road loss compensation factor α used by PUSCH power controlcJ road loss compensation factor α that () or SRS are specialSRS,c(j)；
Path loss offset parameter Δ PL；
Terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used；
PUSCH closed-loop power control parameter fcI closed-loop power control parameter f that () or SRS are specialSRS,c(i)。
4. method as claimed in claim 2, it is characterised in that base station is the SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, identical with corresponding parameter in PUSCH power control；And/or,
Base station is at least one SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, different with corresponding parameter in PUSCH power control.
5. the method for claim 1, it is characterised in that before base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, farther include:
Base station configures the priority of each SRS power control process in the plurality of SRS power control process to terminal, or the priority of each SRS power control process in the plurality of SRS power control process is arranged with terminal in base station.
6. the method as described in arbitrary in claim 1-5, it is characterized in that, described base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, specifically include: base station is the SRS resource of configuration, determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process uses this SRS resource to be used when carrying out SRS transmission as terminal；The SRS power control process that described base station is used by downlink signaling notice terminal, specifically including: the information bit that base station is independent in the Downlink Control Information DCI by high-level signaling or physical downlink control channel PDCCH, notice terminal uses the SRS resource configured to carry out the SRS power control process used during SRS transmission；Or,
Described base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, specifically includes: base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out SRS transmission as terminal；The SRS power control process that described base station is used by downlink signaling notice terminal, specifically includes: the information bit that base station is independent in the DCI by high-level signaling or PDCCH, and notice terminal carries out the SRS power control process used during SRS transmission.
7. method as claimed in claim 6, it is characterised in that described SRS resource includes: the running time-frequency resource of SRS, cyclic shift and SRS port.
8. method as claimed in claim 6, it is characterised in that described SRS transmission includes cycle SRS transmission and/or aperiodic SRS transmission.
9. method as claimed in claim 8, it is characterized in that, when independent in base station is by the DCI of PDCCH information bit notice SRS power control process and described SRS transmission include aperiodic SRS transmission, aperiodic SRS transmission that this aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
10. the method as described in arbitrary in claim 1-5, it is characterised in that described base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, specifically includes:
Base station for SRS parameter group corresponding to DCI format format that can trigger aperiodic SRS transmission, determines, from multiple SRS power control processes by terminal configuration in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；
The SRS power control process that described base station is used by downlink signaling notice terminal, specifically includes:
Base station is associated with described SRS parameter group by high-level signaling notice terminal, the SRS power control process that used when carrying out aperiodic SRS transmission.
11. methods as claimed in claim 10, it is characterised in that aperiodic SRS transmission that described aperiodic SRS transmission is triggered by the DCIformat that described SRS parameter group is corresponding or all aperiodic SRS transmission.
12. methods as described in arbitrary in claim 1-5, it is characterised in that described base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, specifically includes:
Base station determines, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；
The SRS power control process that described base station is used by downlink signaling notice terminal, specifically includes:
Base station by the DCI of PDCCH aperiodic SRS triggering bit, notice terminal carries out the SRS power control process used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic.
13. methods as claimed in claim 12, it is characterised in that aperiodic SRS transmission that described aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
14. 1 kinds of Poewr control methods, it is characterised in that the method includes:
Terminal receives the notice of the SRS power control process used that base station sends, the corresponding one group of SRS power control parameters of each SRS power control process, described SRS power control process is determined according to measurement demand from the multiple detection reference signal SRS power control processes configured for described terminal in advance by described base station；
Terminal obtains the SRS power control parameters that described SRS power control process is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters, and carries out SRS transmission according to this uplink transmission power.
15. methods as claimed in claim 14, it is characterised in that before terminal receives the notice of the SRS power control process used that base station sends, farther include:
Terminal receives multiple SRS power control processes that base station is configured by high-level signaling.
16. methods as claimed in claim 15, it is characterised in that described SRS power control parameters includes at least one in following parameter:
SRS transmit power adjusted value PSRS_OFFSET,c(m)；
Target power value P that Physical Uplink Shared Channel PUSCH power control is usedO_PUSCH,cJ target power value P that () or SRS are specialO_SRS,c(j)；
Road loss compensation factor α used by PUSCH power controlcJ road loss compensation factor α that () or SRS are specialSRS,c(j)；
Path loss offset parameter Δ PL；
Terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used；
PUSCH closed-loop power control parameter fcI closed-loop power control parameter f that () or SRS are specialSRS,c(i)。
17. methods as claimed in claim 15, it is characterised in that base station is the SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, identical with corresponding parameter in PUSCH power control；And/or,
Base station is at least one SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, different with corresponding parameter in PUSCH power control.
18. methods as claimed in claim 16, it is characterized in that, when described SRS power control parameters includes the configuration parameter that terminal carries out the reference signal that descending path loss measurement is used, terminal determines the uplink transmission power of SRS according to this SRS power control parameters, specifically includes:
Terminal, according to carrying out the configuration parameter of the reference signal that descending path loss measurement is used, carries out the measurement of descending circuit loss value based on described reference signal, according to the uplink transmission power measuring the descending circuit loss value obtained and determining SRS.
19. methods as described in arbitrary in claim 14-18, it is characterized in that, described terminal receives the notice of the SRS power control process used that base station sends, specifically including: terminal receives information bit independent in the DCI by high-level signaling or PDCCH of the base station, the terminal of transmission uses the SRS resource of configuration to carry out the notice of the SRS power control process used during SRS transmission；Described carry out SRS transmission according to this uplink transmission power, specifically include: terminal according to described uplink transmission power in described SRS resource enterprising line period SRS transmission and/or aperiodic SRS transmission；Or,
Described terminal receives the notice of the SRS power control process used that base station sends, and specifically includes: terminal receives information bit independent in the DCI by high-level signaling or PDCCH of the base station, and the terminal of transmission carries out the notice of the SRS power control process used during SRS transmission；Described carry out SRS transmission according to this uplink transmission power, specifically include: terminal carries out cycle SRS transmission and/or aperiodic SRS transmission according to described uplink transmission power.
20. methods as claimed in claim 19, it is characterised in that described SRS resource includes: the running time-frequency resource of SRS, cyclic shift and SRS port.
21. methods as claimed in claim 19, it is characterized in that, receive base station in terminal and pass through information bit independent in the DCI of PDCCH, the terminal sent carries out the notice of SRS power control process that used during SRS transmission and time described SRS transmission includes aperiodic SRS transmission, aperiodic SRS transmission that this aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
22. methods as described in arbitrary in claim 14-18, it is characterised in that described terminal receives the notice of the SRS power control process used that base station sends, and specifically includes:
Terminal receive associating with SRS parameter group of being sent by high-level signaling of base station, carry out the SRS power control process that used during aperiodic SRS transmission；
Described terminal obtains the SRS power control parameters that described SRS power control process is corresponding, specifically includes:
Terminal receives the DCI triggering aperiodic SRS transmission that base station sends, and according to SRS parameter group corresponding for the DCIformat of described DCI, obtains the SRS power control process associated with described SRS parameter group；And obtain the SRS power control parameters that this SRS power control process is corresponding；
Described carry out SRS transmission according to this uplink transmission power, specifically include:
Terminal carries out, according to this uplink transmission power, the aperiodic SRS transmission that DCIformat corresponding to described SRS parameter group is triggered, or carries out all of aperiodic SRS transmission according to this uplink transmission power.
23. methods as described in arbitrary in claim 14-18, it is characterised in that described terminal receives the notice of the SRS power control process used that base station sends, and specifically includes:
Terminal receive base station by the DCI of PDCCH aperiodic SRS triggering bit, the terminal sent carries out the notice of the SRS power control process used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic；
Described carry out SRS transmission according to this uplink transmission power, specifically include:
Terminal carries out, according to this uplink transmission power, the aperiodic SRS transmission that described DCI is triggered, or carries out all of aperiodic SRS transmission according to this uplink transmission power.
24. methods as described in arbitrary in claim 14-18, it is characterized in that, if the corresponding multiple SRS power control processes differed of identical SRS resource, the then priority of the plurality of SRS power control process that terminal is pre-configured with according to base station, selects the SRS power control process that priority is higher as current SRS power control process；Or,
Terminal, according to the priority of the plurality of SRS power control process made an appointment with base station, selects the SRS power control process that priority is higher as current SRS power control process；Or,
Terminal does not carry out SRS transmission in described SRS resource.
25. 1 kinds of base stations, it is characterised in that this base station includes:
Determine unit, for determining, according to measurement demand, the SRS power control process that a SRS power control process is used as terminal from advance by multiple detection reference signal SRS power control processes of terminal configuration, the corresponding one group of SRS power control parameters of each SRS power control process；
Notification unit, for the SRS power control process used by downlink signaling notice terminal.
26. base stations as claimed in claim 25, it is characterised in that this base station also includes:
First dispensing unit, is used for before determining, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used as terminal, is that terminal configures multiple SRS power control processes by high-level signaling.
27. base stations as claimed in claim 26, it is characterised in that described SRS power control parameters includes at least one in following parameter:
SRS transmit power adjusted value PSRS_OFFSET,c(m)；
Target power value P that Physical Uplink Shared Channel PUSCH power control is usedO_PUSCH,cJ target power value P that () or SRS are specialO_SRS,c(j)；
Road loss compensation factor α used by PUSCH power controlcJ road loss compensation factor α that () or SRS are specialSRS,c(j)；
Path loss offset parameter Δ PL；
Terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used；
PUSCH closed-loop power control parameter fcI closed-loop power control parameter f that () or SRS are specialSRS,c(i)。
28. base stations as claimed in claim 26, it is characterised in that base station is the SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, identical with corresponding parameter in PUSCH power control；And/or,
Base station is at least one SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, different with corresponding parameter in PUSCH power control.
29. base stations as claimed in claim 25, it is characterised in that this base station also includes:
Second dispensing unit, for configuring the priority of each SRS power control process in the plurality of SRS power control process to terminal, or the priority of each SRS power control process in the plurality of SRS power control process is arranged with terminal in base station.
30. base stations as described in arbitrary in claim 25-29, it is characterized in that, described determine unit for: for configuration SRS resource, from advance for terminal configure multiple SRS power control processes determine the SRS power control process that a SRS power control process uses this SRS resource to be used when carrying out SRS transmission as terminal；Described notification unit is used for: by information bit independent in the Downlink Control Information DCI of high-level signaling or physical downlink control channel PDCCH, notice terminal uses the SRS resource configured to carry out the SRS power control process used during SRS transmission；Or,
Described determine unit for: from advance by terminal configuration multiple SRS power control processes determine the SRS power control process that a SRS power control process is used when carrying out SRS transmission as terminal；Described notification unit is used for: information bit independent in the DCI by high-level signaling or PDCCH, and notice terminal carries out the SRS power control process used during SRS transmission.
31. base stations as claimed in claim 30, it is characterised in that described SRS resource includes: the running time-frequency resource of SRS, cyclic shift and SRS port.
32. base stations as claimed in claim 30, it is characterised in that described SRS transmission includes cycle SRS transmission and/or aperiodic SRS transmission.
33. base stations as claimed in claim 32, it is characterized in that, when independent in described notification unit is by the DCI of PDCCH information bit notice SRS power control process and described SRS transmission include aperiodic SRS transmission, aperiodic SRS transmission that this aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
34. base stations as described in arbitrary in claim 25-29, it is characterised in that described determine unit for:
For the SRS parameter group that DCI format format that can trigger aperiodic SRS transmission is corresponding, determine, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；
Described notification unit is used for:
Associated with described SRS parameter group by high-level signaling notice terminal, the SRS power control process that used when carrying out aperiodic SRS transmission.
35. base stations as claimed in claim 34, it is characterised in that aperiodic SRS transmission that described aperiodic SRS transmission is triggered by the DCIformat that described SRS parameter group is corresponding or all aperiodic SRS transmission.
36. base stations as described in arbitrary in claim 25-29, it is characterised in that described determine unit for:
Determine, from the multiple SRS power control processes configured by terminal in advance, the SRS power control process that a SRS power control process is used when carrying out aperiodic SRS transmission as terminal；
Described notification unit is used for:
By in the DCI of PDCCH aperiodic SRS triggering bit, notice terminal carries out the SRS power control process that used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic.
37. base stations as claimed in claim 36, it is characterised in that aperiodic SRS transmission that described aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
38. 1 kinds of terminals, it is characterised in that this terminal includes:
Receive unit, for receiving the notice of the SRS power control process used that base station sends, the corresponding one group of SRS power control parameters of each SRS power control process, described SRS power control process is determined according to measurement demand from the multiple detection reference signal SRS power control processes configured for described terminal in advance by described base station；
Power control unit, for obtaining the SRS power control parameters that described SRS power control process is corresponding, determines the uplink transmission power of SRS according to this SRS power control parameters；
Transmission unit, for carrying out SRS transmission according to described uplink transmission power.
39. terminals as claimed in claim 38, it is characterised in that described reception unit is additionally operable to:
Before receiving the notice of the SRS power control process used that base station sends, receive multiple SRS power control processes that base station is configured by high-level signaling.
40. terminals as claimed in claim 39, it is characterised in that described SRS power control parameters includes at least one in following parameter:
SRS transmit power adjusted value PSRS_OFFSET,c(m)；
Target power value P that Physical Uplink Shared Channel PUSCH power control is usedO_PUSCH,cJ target power value P that () or SRS are specialO_SRS,c(j)；
Road loss compensation factor α used by PUSCH power controlcJ road loss compensation factor α that () or SRS are specialSRS,c(j)；
Path loss offset parameter Δ PL；
Terminal carries out the configuration parameter of the reference signal that descending path loss measurement is used；
PUSCH closed-loop power control parameter fcI closed-loop power control parameter f that () or SRS are specialSRS,c(i)。
41. terminals as claimed in claim 39, it is characterised in that base station is the SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, identical with corresponding parameter in PUSCH power control；And/or,
Base station is at least one SRS power control parameters that at least one the SRS power control process in multiple SRS power control processes of terminal configuration is corresponding, different with corresponding parameter in PUSCH power control.
42. terminals as claimed in claim 40, it is characterised in that described power control unit is used for:
When described SRS power control parameters includes the configuration parameter that terminal carries out the reference signal that descending path loss measurement is used, according to the configuration parameter carrying out the reference signal that descending path loss measurement is used, carry out the measurement of descending circuit loss value based on described reference signal, the descending circuit loss value obtained according to measurement determines the uplink transmission power of SRS.
43. terminals as described in arbitrary in claim 38-42, it is characterized in that, described reception unit is used for: receive information bit independent in the DCI by high-level signaling or PDCCH of the base station, and the terminal of transmission uses the SRS resource of configuration to carry out the notice of the SRS power control process used during SRS transmission；Described transmission unit is used for: according to described uplink transmission power in described SRS resource enterprising line period SRS transmission and/or aperiodic SRS transmission；Or,
Described reception unit is used for: receiving information bit independent in the DCI by high-level signaling or PDCCH of the base station, the terminal of transmission carries out the notice of the SRS power control process used during SRS transmission；Described transmission unit is used for: terminal carries out cycle SRS transmission and/or aperiodic SRS transmission according to described uplink transmission power.
44. terminals as claimed in claim 43, it is characterised in that described SRS resource includes: the running time-frequency resource of SRS, cyclic shift and SRS port.
45. terminals as claimed in claim 43, it is characterized in that, receive base station at described reception unit and pass through information bit independent in the DCI of PDCCH, the terminal sent carries out the notice of SRS power control process that used during SRS transmission and time described SRS transmission includes aperiodic SRS transmission, aperiodic SRS transmission that this aperiodic SRS transmission is triggered by this DCI or all aperiodic SRS transmission.
46. terminals as described in arbitrary in claim 38-42, it is characterised in that described reception unit is used for: SRS power control process that receive associating with described SRS parameter group of being sent by high-level signaling of base station, that used when carrying out aperiodic SRS transmission；
Described power control unit is used for: receives the DCI triggering aperiodic SRS transmission that base station sends, according to SRS parameter group corresponding for the DCIformat of described DCI, obtains the SRS power control process associated with described SRS parameter group；And obtain the SRS power control parameters that this SRS power control process is corresponding；
Described transmission unit is used for: carries out, according to this uplink transmission power, the aperiodic SRS transmission that DCIformat corresponding to described SRS parameter group is triggered, or carries out all of aperiodic SRS transmission according to this uplink transmission power.
47. terminals as described in arbitrary in claim 38-42, it is characterized in that, described reception unit is used for: receive base station by the DCI of PDCCH aperiodic SRS triggering bit, the terminal sent carries out the notice of the SRS power control process used during aperiodic SRS transmission, and wherein the instruction information of this SRS power control process carries out combined coding with the trigger message of SRS aperiodic；
Described transmission unit is used for: carries out, according to this uplink transmission power, the aperiodic SRS transmission that described DCI is triggered, or carries out all of aperiodic SRS transmission according to this uplink transmission power.
48. terminals as described in arbitrary in claim 38-42, it is characterised in that described power control unit is additionally operable to:
If the corresponding multiple SRS power control processes differed of identical SRS resource, the then priority of the plurality of SRS power control process being pre-configured with according to base station, select the SRS power control process that priority is higher as current SRS power control process；Or,
According to the priority of the plurality of SRS power control process made an appointment with base station, select the SRS power control process that priority is higher as current SRS power control process；Or,
In described SRS resource, do not carry out SRS transmission.
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