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CN103312484B - Control method, user equipment and the base station of detection reference signal transmission power - Google Patents

Control method, user equipment and the base station of detection reference signal transmission power Download PDF

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Publication number
CN103312484B
CN103312484B CN201210069821.1A CN201210069821A CN103312484B CN 103312484 B CN103312484 B CN 103312484B CN 201210069821 A CN201210069821 A CN 201210069821A CN 103312484 B CN103312484 B CN 103312484B
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srs
power control
control parameters
sets
srs power
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CN103312484A (en
Inventor
林志嵘
任璐
戴博
夏树强
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ZTE Corp
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ZTE Corp
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Priority to CN201210069821.1A priority Critical patent/CN103312484B/en
Priority to PCT/CN2013/072747 priority patent/WO2013135205A1/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
    • H04W52/18—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 invention provides a kind of control method of detection reference signal transmission power, the processing method of parameter information, user equipment and base station, wherein, the control method of the detection reference signal transmission power includes：It is the more set SRS power contorl parameters and/or multiple SRS power compensating values that the UE is provided that user equipment (UE), which obtains base station,；The UE uses a transmission power for determining the SRS in a set of and/or the multiple SRS power compensating values in more set SRS power contorl parameters.Control method, user equipment and the base station of above-mentioned detection reference signal transmission power, by obtaining more set SRS power contorl parameters and/or multiple SRS power compensating values from base station, so as to control the transmission power of the SRS for the transmitting of different purposes for greater flexibility, ensure the accuracy of channel measurement, reduce and disturb and save UE power consumptions.

Description

Control method of sounding reference signal transmission power, user equipment and base station
Technical Field
The present invention relates to the field of digital communications, and in particular, to a method for controlling sounding reference signal transmit power, a method for processing parameter information, a user equipment, and a base station.
Background
Uplink Physical channels of a Long Term Evolution (LTE) system in the third generation partnership project (3GPP) include a Physical Random Access Channel (PRACH), a Physical Uplink Shared Channel (PUSCH), and a Physical Uplink Control Channel (PUCCH). The uplink signal of LTE adopts a single carrier Orthogonal Frequency Division Multiplexing (OFDM) technique, and the reference signal and data are multiplexed together in a time division multiplexing mode (TDM). The uplink Reference Signal is divided into a Demodulation Reference Signal (DM-RS) and a Sounding Reference Signal (SRS), where the SRS is divided into a non-Periodic SRS (aperiodic Sounding Reference Signal, a-SRS for short) and a Periodic SRS (P-SRS for short), the former needs to be triggered by physical layer signaling and then transmitted, and the latter is transmitted by the UE according to a certain period.
The downlink of the Long Term Evolution-Advanced (LTE-a) system is a frequency Division system with OFDM as the basic Multiple Access scheme, and the uplink uses Single-carrier frequency Division Multiple Access (SC-FDMA). Unlike a conventional wireless communication system using Code Division Multiple Access (CDMA) as a basic Multiple Access scheme, the LTE-a system has no processing gain, and has almost no interference problem due to complete frequency division orthogonality in a cell, but the processing of the interference problem at the cell edge is relatively troublesome. The Coordinated Multiple Point (CoMP) technology is to utilize the transmitting antennas of Multiple cells to perform cooperative transmission, so as to achieve higher quality and reliable transmission of a wireless link at the edge of a cell, and effectively solve the problem of interference at the edge of the cell.
The 3GPP RAN1#63b conference divides the research scenario of CoMP technology into four types: the method comprises the following steps that a scene is that the same network is constructed, three cells are covered under one base station (eNB), each cell has different cell identification (cell ID), and each cell base station has the same transmitting power; the second scenario is a homogeneous network, wherein a plurality of cells are covered by an eNB through optical fibers, each cell has different cell IDs, and base stations of the cells have the same transmitting power; a third scenario is a heterogeneous network, wherein one eNB covers a plurality of cells through optical fibers, each cell has a different cell ID, a macro cell and a Remote Radio Head (RRH) have different transmission powers, and the transmission power of the macro cell is usually much greater than the RRH; in a fourth scenario, the heterogeneous network is obtained by covering multiple cells with optical fibers under one eNB, each cell has the same cell ID, the macro cell and the RRH have different transmission powers, and generally, the macro cell transmission power is much larger than the RRH.
The CoMP technology is divided into downlink CoMP and uplink CoMP, where downlink CoMP may refer to multiple nodes jointly transmitting data/reference signals for a user, and uplink CoMP may refer to multiple nodes receiving data/reference signals transmitted by the user.
In 3GPP TR36.819, the CoMP technology is divided into three feedback modes, namely explicit feedback, implicit feedback, and SRS feedback, where the explicit feedback is that a receiving end directly feeds back an observed channel to a transmitting end; implicit feedback is that the receiving end processes an observed Channel and feeds back the Channel to the transmitting end, for example, feeds back Channel state Information (CQI) of the observed Channel, Precoding Matrix Information (PMI), and Rank Information (RI) of the observed Channel to the transmitting end; the SRS feedback is to obtain downlink channel information after estimating according to a received SRS signal channel based on a channel reciprocity characteristic in a Time Division Duplex (TDD) system. As an important feedback mode of the CoMP system, SRS feedback can obtain more accurate channel state information with less feedback overhead.
In summary, the functions of SRS feedback in LTE/LTE-a generally include two types: one is to utilize SRS feedback to obtain uplink channel information, and perform uplink scheduling, resource allocation and data transmission; one is to obtain downlink channel information (in a TDD system) by using SRS feedback, and perform downlink scheduling, resource allocation, and data transmission.
In the prior art, uplink power control can be regarded as being composed of two parts, namely open-loop power control and closed-loop power control, wherein path loss calculation in the open-loop power control assumes that downlink path loss is equal to uplink path loss, and the downlink path loss is estimated according to a downlink reference signal to compensate uplink transmission power. However, in CoMP scenarios three and four, because there is imbalance in transmission power between cells, and according to the maximum reception gain principle, the downlink CoMP transmission node set and the uplink CoMP reception node set of a user are not the same, and therefore the downlink path loss is not equal to the uplink path loss, the path loss calculation is not accurate, and thus there is a large deviation in open-loop power control, so that a good power control effect cannot be obtained in time through the closed-loop fine adjustment function. Excessive path loss calculation not only wastes the transmitting power of the user, but also causes great interference to other users; otherwise, if the path loss is too small, the coverage and reception quality requirements requested by the user may not be met.
Also, in the prior art, the transmission power of the SRS is determined by the following 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, PCMAX，c(i) The maximum allowed transmission power on the carrier wave depends on the power class of the UE, and the maximum capability of the transmission power of the UE is determined; pSRS_OFFSET，c(m) is an offset value of power of SRS and power of PUSCH, configured semi-statically by a higher layer; mSRS，cThe bandwidth of the SRS sent by the subframe i on the carrier is represented by RB, namely the number of the distributed RB, PSD on each RB distributed by the UE is equal, and the transmitting power is in direct proportion to the number of the distributed RB; pO_PUSCH，c(j) Representing the minimum transmit power of the UE when the channel transmission requirements are met regardless of the path loss impact on the carrier (assuming the UE is on the base station side); αc(j) The partial path loss compensation coefficient on the carrier wave is shown, and the value of the partial path loss compensation coefficient is αc∈ {0, 04, 05, 06, 07, 08, 09, 1}, which is a 3-bit cell-specific parameter provided by the upper layer αc(j) Where 1 denotes complete path loss compensation, i.e. the signal-to-noise ratio of the signal arriving at the base station is the same for each user, the transmission power of the cell-edge users is very high αc(j) 0 represents no path loss compensation, the base station has high receiving power to the users at the center of the cell and low receiving power to the users at the edge of the cell, 0 < αc(j) And less than 1 represents partial path loss compensation, the loss of path loss compensation of users in the center of the cell is very small, and the loss of path loss compensation of users at the edge of the cell is relatively large. The design can ensure that the throughput of users in the center of the cell is not greatly reduced, and simultaneously, the interference of the users at the edge of the cell to the adjacent cell is reduced to a certain extent; PLcIs the downlink path loss estimation value calculated in the UE on the carrier wave; f. fc(i) Is a UE on the own carrierAnd the closed-loop power control parameter state is directly adopted when the SRS is sent, and the closed-loop power control parameter state of the PUSCH is given by RRC and has two types of accumulation and current absolute value. This parameter is the combined result of intra-cell closed loop power control and inter-cell power control.
In the prior art, the UE determines the difference between the SRS transmit power and the PUSCH transmit power by power offset. In a CoMP system of TDD, a receiving node of uplink CoMP that receives an SRS for detecting an uplink channel is not consistent with a transmitting node of downlink CoMP that receives an SRS for detecting a downlink channel, and the requirements for the transmission power of the SRS are also not consistent, so that the requirements for the transmission power of the SRS for the above two purposes cannot be well supported according to the original power control method.
Disclosure of Invention
The embodiment of the invention provides a method for controlling the transmission power of a sounding reference signal, a method for processing parameter information, user equipment and a base station, and aims to solve the problem that the prior art cannot accurately realize the control of the transmission power of the sounding reference signal.
The embodiment of the invention provides a method for controlling the transmission power of a Sounding Reference Signal (SRS), which comprises the following steps:
user Equipment (UE) obtains a plurality of sets of SRS power control parameters and/or a plurality of SRS power compensation values provided by a base station for the UE;
the UE determines the SRS transmit power using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values.
Preferably, the obtaining, by the UE, multiple sets of SRS power control parameters and/or multiple SRS power compensation values provided by the base station for the UE includes:
the UE obtains the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values configured for the UE by a base station through radio resource control protocol (RRC) signaling; or
And the UE obtains the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values indicated by the base station for the UE through physical layer signaling.
Preferably, the sets of SRS power control parameters and/or the plurality of SRS power compensation values are stored in a configuration parameter of a non-periodic sounding reference signal (a-SRS) in the RRC signaling or a configuration parameter of an uplink power control parameter.
Preferably, the physical layer signaling is Downlink Control Information (DCI) including an a-SRS trigger command.
Preferably, the sets of SRS power control parameters correspond to the content of the a-SRS trigger command and/or the format of the DCI; alternatively, the plurality of SRS power compensation values correspond to a content of the a-SRS trigger command and/or a format of the DCI.
Preferably, if the sets of SRS power control parameters correspond to the content of the a-SRS trigger command, the determining, by the UE, the SRS transmission power by using one of the sets of SRS power control parameters and/or one of the plurality of SRS power compensation values includes:
the UE selects corresponding SRS power control parameters and/or SRS power compensation values according to the content of the A-SRS triggering command, and determines the triggered transmitting power of the A-SRS according to the selected SRS power control parameters and/or the SRS power compensation values; or
If the multiple sets of SRS power control parameters correspond to the DCI format, the determining, by the UE, the SRS transmit power using one of the multiple sets of SRS power control parameters and/or one of the multiple SRS power offset values includes:
and the UE selects a corresponding SRS power control parameter and/or SRS power compensation value according to the format of the DCI, and determines the transmitting power of the triggered A-SRS according to the selected SRS power control parameter and/or the SRS power compensation value.
Preferably, the UE determining the SRS transmit power using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values comprises:
the UE determines transmit powers of a plurality of periodic sounding reference signals (P-SRS) within one carrier using the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values.
Preferably, the plurality of P-SRS within the one carrier includes: and a plurality of P-SRS with different periods or the same period in one carrier.
Preferably, the multiple sets of SRS power control parameters correspond to the multiple P-SRS with different periods in a one-to-one or one-to-many manner.
Preferably, the correspondence is obtained by the base station indicating the UE or the UE according to a preset correspondence rule.
The embodiment of the invention also provides a method for processing the parameter information, which comprises the following steps:
a base station configures or indicates a plurality of sets of Sounding Reference Signal (SRS) power control parameters and/or a plurality of SRS power compensation values for User Equipment (UE);
and the base station transmits the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values to the UE.
Preferably, the base station configures multiple sets of SRS power control parameters and/or multiple SRS power compensation values for the UE, including:
the base station independently configures the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values for the UE; or
And the base station configures the plurality of sets of SRS power control parameters or the plurality of SRS power compensation values for the UE according to a preset relation function.
Preferably, the configuring, by the base station, multiple sets of SRS power control parameters for the UE includes:
and the base station configures the plurality of sets of SRS power control parameters for the UE according to the power control parameters of a Physical Uplink Shared Channel (PUSCH) or the power control parameters of the Physical Uplink Control Channel (PUCCH).
An embodiment of the present invention further provides a User Equipment (UE), where the UE includes:
an obtaining module, configured to obtain multiple sets of Sounding Reference Signal (SRS) power control parameters and/or multiple SRS power compensation values provided by a base station for the UE;
a determining module configured to determine the SRS transmit power using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values.
Preferably, the obtaining module is specifically configured to:
obtaining the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values configured by a base station for the UE through radio resource control protocol (RRC) signaling; or
And obtaining the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values indicated by the base station for the UE through physical layer signaling.
Preferably, the sets of SRS power control parameters and/or the plurality of SRS power compensation values are stored in a configuration parameter of a non-periodic sounding reference signal (a-SRS) in the RRC signaling or a configuration parameter of an uplink power control parameter.
Preferably, the physical layer signaling is Downlink Control Information (DCI) including an a-SRS trigger command.
Preferably, the sets of SRS power control parameters correspond to the content of the a-SRS trigger command and/or the format of the DCI; alternatively, the plurality of SRS power compensation values correspond to a content of the a-SRS trigger command and/or a format of the DCI.
Preferably, if the sets of SRS power control parameters correspond to the content of the a-SRS trigger command, the determining module is specifically configured to:
selecting corresponding SRS power control parameters and/or SRS power compensation values according to the content of the A-SRS triggering command, and determining the triggered transmitting power of the A-SRS according to the selected SRS power control parameters and/or the SRS power compensation values; or
If the multiple sets of SRS power control parameters correspond to the DCI format, the determining module is specifically configured to:
and selecting a corresponding SRS power control parameter and/or SRS power compensation value according to the format of the DCI, and determining the transmitting power of the triggered A-SRS according to the selected SRS power control parameter and/or the SRS power compensation value.
Preferably, the determining module is specifically configured to:
determining transmit powers of a plurality of periodic sounding reference signals (P-SRS) within one carrier using the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values.
Preferably, the plurality of P-SRS within the one carrier includes: and a plurality of P-SRS with different periods or the same period in one carrier.
Preferably, the multiple sets of SRS power control parameters correspond to the multiple P-SRS with different periods in a one-to-one or one-to-many manner.
An embodiment of the present invention further provides a base station, where the base station includes:
a processing module to configure or indicate a plurality of sets of Sounding Reference Signal (SRS) power control parameters and/or a plurality of SRS power compensation values for a User Equipment (UE);
a sending module, configured to send the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values to the UE.
Preferably, the processing module is specifically configured to: independently configuring the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values for the UE; or configuring the plurality of sets of SRS power control parameters or the plurality of SRS power compensation values for the UE according to a predetermined relation function.
Preferably, the processing module is specifically configured to: and configuring the plurality of sets of SRS power control parameters for the UE according to the power control parameters of a Physical Uplink Shared Channel (PUSCH) or the power control parameters of the Physical Uplink Control Channel (PUCCH).
The control method of the sounding reference signal transmitting power, the processing method of the parameter information, the user equipment and the base station can more accurately and flexibly realize the control of the sounding reference signal transmitting power.
Drawings
FIG. 1 is a flowchart of a method for controlling sounding reference signal transmission power according to a first embodiment of the present invention for aperiodic SRS;
FIG. 2 is a flowchart of a method for controlling sounding reference signal transmission power according to a second embodiment of the present invention for aperiodic SRS;
FIG. 3 is a flowchart of a third embodiment of the method for controlling sounding reference signal transmission power according to the present invention for aperiodic SRS;
FIG. 4 is a flowchart of a method for controlling sounding reference signal transmission power according to a first embodiment of the present invention for periodic SRS;
FIG. 5 is a flowchart of a SRS period control method for sounding reference signal transmission power according to a second embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a UE according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an embodiment of a base station of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The embodiment of the invention provides a method for processing parameter information, which is described from a base station side and comprises the following steps:
step 11, configuring or indicating a plurality of sets of SRS power control parameters and/or a plurality of SRS power compensation values for User Equipment (UE) by a base station;
the method comprises the following steps: the base station independently configures the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values for the UE; or the base station configures the multiple sets of SRS power control parameters or the multiple SRS power compensation values for the UE according to a predetermined relation function.
Wherein, the configuring, by the base station, the multiple sets of SRS power control parameters of the SRS for the UE may further include: and the base station configures the plurality of sets of SRS power control parameters for the UE according to the power control parameters of a Physical Uplink Shared Channel (PUSCH) or the power control parameters of the Physical Uplink Control Channel (PUCCH).
And step 12, the base station sends the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values to the UE.
According to the processing method of the parameter information, the UE can control the transmitting power of the SRS by providing the power control parameter and/or the power compensation value of the SRS for the UE.
An embodiment of the present invention provides a method for controlling Sounding Reference Signal (SRS) transmission power, which is described from a UE side, and includes:
step 21, User Equipment (UE) obtains a plurality of sets of SRS power control parameters and/or a plurality of SRS power compensation values provided by a base station for the UE;
the method comprises the following steps: the UE obtains the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values configured for the UE by a base station through radio resource control protocol (RRC) signaling; or, the UE obtains the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values indicated by the base station for the UE through physical layer signaling. Each set of SRS power control parameters is all or part of parameters in the SRS power calculation formula; the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values are stored in configuration parameters of non-periodic sounding reference signals (A-SRS) or configuration parameters of uplink power control parameters in the RRC signaling. The physical layer signaling is Downlink Control Information (DCI) containing an A-SRS triggering command; the plurality of sets of SRS power control parameters correspond to the content of the A-SRS trigger command and/or the format of the DCI; alternatively, the plurality of SRS power compensation values correspond to a content of the a-SRS trigger command and/or a format of the DCI.
Step 22, the UE determines the SRS transmit power using one of the sets of SRS power control parameters and/or one of the plurality of SRS power offset values.
If the plurality of sets of SRS power control parameters correspond to the content of the A-SRS trigger command, the UE determining the SRS transmission power by using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values, including:
the UE determining the SRS transmit power using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values, comprising:
the UE selects corresponding SRS power control parameters and/or SRS power compensation values according to the content of the A-SRS triggering command, and determines the triggered transmitting power of the A-SRS according to the selected SRS power control parameters and/or the SRS power compensation values; or
If the multiple sets of SRS power control parameters correspond to the DCI format, the determining, by the UE, the SRS transmit power using one of the multiple sets of SRS power control parameters and/or one of the multiple SRS power offset values includes:
and the UE selects a corresponding SRS power control parameter and/or SRS power compensation value according to the format of the DCI, and determines the transmitting power of the triggered A-SRS according to the selected SRS power control parameter and/or the SRS power compensation value.
In addition, the step may further include: the UE determines transmit powers of a plurality of periodic sounding reference signals (P-SRS) within one carrier using the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values. Wherein the plurality of P-SRSs within the one carrier comprise: and a plurality of P-SRS with different periods or the same period in one carrier. The corresponding relations between the multiple sets of SRS power control parameters and the multiple sets of P-SRS with different periods are one-to-one correspondence or one-to-many correspondence. The corresponding relation is obtained by the base station indicating the UE or the UE according to a preset corresponding rule.
According to the SRS transmission power control method, the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values are obtained from the base station, so that the transmission power of the SRS transmitted aiming at different purposes can be more flexibly controlled, the accuracy of channel measurement is ensured, the interference is reduced, and the power consumption of the UE is saved.
The technical solution of the present invention is further described in detail from the perspective of base station and UE interaction.
Example one
As shown in fig. 1, it is a flowchart of a method for controlling sounding reference signal transmission power according to a first embodiment of the present invention for an aperiodic SRS, the method includes:
step 101, a network side configures a plurality of sets of power control parameters of SRS or power compensation values of a plurality of SRSs for UE through radio resource control protocol (RRC) signaling;
102, selecting SRS power control parameters by the UE according to the corresponding relation between a plurality of sets of SRS power control parameters or a plurality of SRS power compensation values and specific signaling contents for triggering an A-SRS command in a DCI format (format);
for example, the network side configures power control parameters of 3 sets of sounding reference signals, i.e., { 1 st set of power control parameters, 2 nd set of power control parameters, and 3 rd set of power control parameters } for the UE through RRC signaling, and the power control parameters at this time correspond to specific contents of a trigger command for triggering the aperiodic sounding reference signal, and the corresponding relationship is as follows:
the 1 st set of power control parameters corresponds to two bits of a trigger command for triggering the aperiodic sounding reference signal in a Downlink Control Information (DCI) format (format)4, and the two bits are '01'; the set 2 of power control parameters correspond to two bits of a trigger command for triggering the aperiodic sounding reference signal in the DCI format 4, which are "10"; the 3 rd set of power control parameters corresponds to "11" in two bits of the trigger command for triggering the aperiodic sounding reference signal in DCIformat 4. "
103, calculating the transmitting power of the triggered A-SRS by using the selected SRS power control parameters;
and the network side triggers the A-SRS transmission of the UE by using the DCI format 4 on the nth subframe.
If two bits of the trigger command of the aperiodic sounding reference signal are "01" at this time, after receiving the trigger command, the UE calculates the transmission power of the triggered a-SRS by using the set 1 power control parameter and the SRS power calculation formula. Finally, transmitting the A-SRS according to the calculated transmitting power; if two bits of the trigger command of the aperiodic sounding reference signal are "10", the UE calculates the transmission power of the triggered a-SRS by using the set 2 of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if two bits of the trigger command of the aperiodic sounding reference signal are "11", the UE calculates the transmission power of the triggered a-SRS by using the set 3 of power control parameters and the SRS power calculation formula after receiving the trigger command.
And step 104, transmitting the A-SRS by using the transmission power calculated in the step 103.
Example two
As shown in fig. 2, it is a flowchart of a method for controlling sounding reference signal transmission power according to a second embodiment of the present invention for an aperiodic SRS, the method includes:
step 201, a network side configures a plurality of sets of power control parameters of the SRS or power compensation values of the SRS for the UE through radio resource control protocol (RRC) signaling;
step 202, the UE selects SRS power control parameters according to a corresponding relationship between a plurality of sets of SRS power control parameters or a plurality of SRS power compensation values and a DCI format (format);
for example, the network side configures, through RRC signaling, power control parameters of 5 sets of sounding reference signals for the UE, that is, { 1 st set of power control parameters, 2 nd set of power control parameters,. and 5 th set of power control parameters }, and at this time, the power control parameters correspond to DCI formats that trigger aperiodic sounding reference signals, and the correspondence relationship is as follows:
the 1 st set of power control parameters corresponds to the DCI format 0; the 2 nd set of power control parameters corresponds to DCIformat 1A; the 3 rd set of power control parameters correspond to the DCI format 2B; the 4 th set of power control parameters corresponds to the DCI format 2C; the 5 th set of power control parameters corresponds to the DCI format 4.
Step 203, calculating the transmission power of the triggered A-SRS by using the selected SRS power control parameters;
if the network side triggers the A-SRS sending of the UE by using the DCI format 0 on the nth subframe, the UE calculates the transmitting power of the triggered A-SRS by using the 1 st set of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side triggers the A-SRS sending of the UE by using the DCI format 1A on the nth subframe at the moment, after receiving the trigger command, the UE calculates the transmitting power of the triggered A-SRS by using the 2 nd set of power control parameters and the SRS power calculation formula. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side triggers the A-SRS transmission of the UE by using the DCI format2B on the nth subframe at the moment, the UE calculates the transmission power of the triggered A-SRS by using the 3 rd set of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side triggers the A-SRS sending of the UE by using the DCI format 2C on the nth subframe at the moment, the UE calculates the transmitting power of the triggered A-SRS by using the 4 th set of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side triggers the A-SRS sending of the UE by using the DCI format 4 on the nth subframe at the moment, the UE calculates the transmitting power of the triggered A-SRS by using the 5 th set of power control parameters and the SRS power calculation formula after receiving the trigger command.
And step 204, transmitting the A-SRS by using the transmission power calculated in the step 103.
EXAMPLE III
As shown in fig. 3, it is a flowchart of a third embodiment of the method for controlling sounding reference signal transmission power of the present invention for aperiodic SRS, and the method includes:
step 301, a network side configures a plurality of sets of power control parameters of the SRS or power compensation values of the SRS for the UE through radio resource control protocol (RRC) signaling;
step 302, the UE selects SRS power control parameters according to the corresponding relation between a plurality of sets of SRS power control parameters or a plurality of SRS power compensation values and the content of an A-SRS trigger command in the DCI format;
for example, the network side configures power control parameters of 7 sets of sounding reference signals for the UE through RRC signaling, that is, { 1 st set of power control parameters, 2 nd set of power control parameters,. and 7 th set of power control parameters }, and the power control parameters at this time correspond to the DCI format triggering the aperiodic sounding reference signal and the specific content of the trigger command triggering the aperiodic sounding reference signal, and the corresponding relationship is as follows:
the 1 st set of power control parameters corresponds to the DCI format 0; the 2 nd set of power control parameters corresponds to DCIformat 1A; the 3 rd set of power control parameters correspond to the DCI format 2B; the 4 th set of power control parameters corresponds to the DCI format 2C; the 5 th set of power control parameters correspond to two bits of a trigger command for triggering the aperiodic sounding reference signal in the DCI format 4, wherein the two bits are '01'; the 6 th set of power control parameters corresponds to two bits of a trigger command for triggering the aperiodic sounding reference signal in the DCIformat 4 to be '10'; the 7 th set of power control parameters corresponds to two bits of the trigger command for triggering the aperiodic sounding reference signal in the DCI format 4 as "11".
Step 303, calculating the transmission power of the triggered A-SRS by using the selected SRS power control parameter;
if the network side triggers the A-SRS sending of the UE by using the DCI format 0 on the nth subframe, the UE calculates the transmitting power of the triggered A-SRS by using the 1 st set of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side triggers the A-SRS sending of the UE by using the DCI format 1A on the nth subframe at the moment, after receiving the trigger command, the UE calculates the transmitting power of the triggered A-SRS by using the 2 nd set of power control parameters and the SRS power calculation formula. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side triggers the A-SRS transmission of the UE by using the DCI format2B on the nth subframe at the moment, the UE calculates the transmission power of the triggered A-SRS by using the 3 rd set of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side triggers the A-SRS sending of the UE by using the DCI format 2C on the nth subframe at the moment, the UE calculates the transmitting power of the triggered A-SRS by using the 4 th set of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side uses the DCI format 4 to trigger the A-SRS transmission of the UE on the nth subframe, and two bits of the trigger command of the aperiodic sounding reference signal are '01', the UE calculates the transmission power of the triggered A-SRS by using the 5 th set of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side uses the DCI format 4 to trigger the A-SRS transmission of the UE on the nth subframe, and two bits of the trigger command of the aperiodic sounding reference signal are '10', the UE calculates the transmission power of the triggered A-SRS by using the 6 th set of power control parameters and the SRS power calculation formula after receiving the trigger command. Finally, transmitting the A-SRS according to the calculated transmitting power; if the network side uses DCIformat 4 to trigger the A-SRS transmission of the UE on the nth subframe, and two bits of the trigger command of the aperiodic sounding reference signal are '11', the UE calculates the transmission power of the triggered A-SRS by using the 7 th set of power control parameters and the SRS power calculation formula after receiving the trigger command.
Step 304, the A-SRS is transmitted by using the transmission power calculated in step 303.
As shown in fig. 4, it is a flowchart of a method for controlling sounding reference signal transmission power according to a first embodiment of the present invention for periodic SRS, the method includes:
step 401, a network side configures a plurality of sets of SRS power control parameters or a plurality of SRS power compensation values for UE through RRC signaling;
step 402, a base station indicates a plurality of sets of SRS power control parameters or predefined corresponding relations between a plurality of SRS power compensation values and a plurality of P-SRS configured in a current carrier to UE;
step 403, the UE selects SRS power control parameters according to predefined correspondence between multiple sets of SRS power control parameters or multiple SRS power compensation values indicated by the base station and multiple P-SRS configured in the current carrier;
step 404, calculating the transmission power of the current P-SRS by using the selected SRS power control parameter;
and step 405, transmitting the P-SRS by using the transmission power calculated in the previous step.
For specific examples, see example four to example six.
Example four
The network side configures 2 sets of power control parameters of sounding reference signals, namely { 1 st set of power control parameters, 2 nd set of power control parameters } for the UE through RRC signaling, and assumes that the UE configures two periods SRS with inconsistent periods on a carrier c, where the periods are 5ms and 10ms, respectively.
If the corresponding relationship between the power control parameters of the two sets of SRS of the base station indication UE and the periodic SRS with the inconsistent two periods is one-to-one, the 1 st set of power control parameters corresponds to the periodic SRS with the period of 5ms, and the 2 nd set of power control parameters corresponds to the periodic SRS with the period of 10 ms; when the UE transmits the periodic SRS with a period of 5ms, the UE calculates the power of the periodic SRS by using the set 1 power control parameter and the SRS power calculation formula and transmits the periodic SRS. When the UE transmits the periodic SRS with the period of 10ms, the power of the periodic SRS is calculated and transmitted by using the set 2 of power control parameters through the SRS power calculation formula.
EXAMPLE five
The network side configures 2 sets of power control parameters of sounding reference signals, namely { 1 st set of power control parameters, 2 nd set of power control parameters } for the UE through RRC signaling, and assumes that the UE configures three periodic SRS with inconsistent periods on a carrier c, where the periods are 5ms, 10ms, and 15ms, respectively.
If the corresponding relationship between the power control parameters of the two sets of SRS of the UE and the periodic SRS with the inconsistent three periods is non-one-to-one correspondence, the 1 st set of power control parameters corresponds to the periodic SRS with the period of 5ms and the periodic SRS with the period of 10ms, and the 2 nd set of power control parameters corresponds to the periodic SRS with the period of 15 ms; when the UE transmits a periodic SRS with a period of 5ms and a periodic SRS with a period of 10ms, calculating and transmitting the power of the periodic SRS by using the set 1 power control parameter and the SRS power calculation formula; when the UE transmits the periodic SRS with the period of 15ms, the power of the periodic SRS is calculated and transmitted by using the set 2 of power control parameters through the SRS power calculation formula.
EXAMPLE six
The network side configures 2 sets of power control parameters of sounding reference signals, namely { 1 st set of power control parameters, 2 nd set of power control parameters } for the UE through RRC signaling, and supposing that the UE configures two periodic SRSs with identical periods on a carrier c at the time, the periods are both 5ms, and the two periodic SRSs are respectively transmitted through time division.
If the base station indicates that the power control parameters of the two sets of SRS of the UE correspond to the corresponding relations of the periodic SRS with the same period of the two sets of SRS one by one, the 1 st set of power control parameters correspond to the periodic SRS with the first period of 5ms, and the 2 nd set of power control parameters correspond to the other periodic SRS with the period of 5 ms; when the UE sends a periodic SRS with a first period of 5ms, the power of the periodic SRS is calculated and sent by using the set 1 power control parameter and the SRS power calculation formula; when the UE transmits another periodic SRS with the period of 5ms, the power of the periodic SRS is calculated and transmitted by using the set 2 of power control parameters through the SRS power calculation formula.
As shown in fig. 5, it is a flowchart of a method for controlling sounding reference signal transmission power according to a second embodiment of the present invention for periodic SRS, the method includes:
step 501, a network side configures a plurality of sets of SRS power control parameters or a plurality of SRS power compensation values for UE through RRC signaling;
step 502, the UE selects SRS power control parameters according to predefined corresponding relations between a plurality of sets of SRS power control parameters or a plurality of SRS power compensation values and a plurality of P-SRS configured in a current carrier;
step 503, calculating the transmission power of the current P-SRS by using the selected SRS power control parameter;
and step 504, transmitting the P-SRS by using the transmission power calculated in the previous step.
Specific examples can be found in example seven to example nine.
EXAMPLE seven
The network side configures 2 sets of power control parameters of sounding reference signals, namely { 1 st set of power control parameters, 2 nd set of power control parameters } for the UE through RRC signaling, and assumes that the UE configures two periods SRS with inconsistent periods on a carrier c, where the periods are 5ms and 10ms, respectively.
If the corresponding relationship between the power control parameters of the 2 sets of SRS and the periodic SRS with inconsistent two periods is one-to-one correspondence according to the predefined rule, the 1 st set of power control parameters corresponds to the periodic SRS with the period of 5ms, and the 2 nd set of power control parameters corresponds to the periodic SRS with the period of 10 ms; when the UE transmits a periodic SRS with a period of 5ms, calculating and transmitting the power of the periodic SRS by using the set 1 power control parameter and the SRS power calculation formula; when the UE transmits the periodic SRS with the period of 10ms, the power of the periodic SRS is calculated and transmitted by using the set 2 of power control parameters through the SRS power calculation formula.
Example eight
The network side configures two sets of power control parameters of the sounding reference signal, namely { 1 st set of power control parameters, 2 nd set of power control parameters } for the UE through RRC signaling, and assumes that the UE configures three periodic SRSs with inconsistent periods on a carrier c at this time, and the periods are 5ms, 10ms, and 15ms, respectively.
If the corresponding relationship between the power control parameters of the two sets of SRS and the periodic SRS with inconsistent three periods is non-one-to-one correspondence according to a predefined rule, the 1 st set of power control parameters corresponds to the periodic SRS with the period of 5ms and the periodic SRS with the period of 10ms, and the 2 nd set of power control parameters corresponds to the periodic SRS with the period of 15 ms; when the UE transmits a periodic SRS with a period of 5ms and a periodic SRS with a period of 10ms, calculating and transmitting the power of the periodic SRS by using the set 1 power control parameter and the SRS power calculation formula; when the UE transmits the periodic SRS with the period of 15ms, the power of the periodic SRS is calculated and transmitted by using the set 2 of power control parameters through the SRS power calculation formula.
Example nine
The network side configures 2 sets of power control parameters of sounding reference signals, namely { 1 st set of power control parameters, 2 nd set of power control parameters } for the UE through RRC signaling, and supposing that the UE configures two periodic SRSs with identical periods on a carrier c at the time, the periods are both 5ms, and the two periodic SRSs are respectively transmitted through time division.
If the corresponding relationship between the power control parameters of the two sets of SRS and the periodic SRS with the same period is one-to-one correspondence according to a predefined rule, the 1 st set of power control parameters corresponds to the periodic SRS with the first period of 5ms, and the 2 nd set of power control parameters corresponds to the other periodic SRS with the period of 5 ms; when the UE sends a periodic SRS with a first period of 5ms, the power of the periodic SRS is calculated and sent by using the set 1 power control parameter and the SRS power calculation formula; when the UE transmits another periodic SRS with the period of 5ms, the power of the periodic SRS is calculated and transmitted by using the set 2 of power control parameters through the SRS power calculation formula.
As shown in fig. 6, which is a schematic structural diagram of an embodiment of the UE of the present invention, the UE includes an obtaining module 61 and a determining module 62, wherein:
an obtaining module, configured to obtain multiple sets of Sounding Reference Signal (SRS) power control parameters and/or multiple SRS power compensation values provided by a base station for the UE;
a determining module configured to determine the SRS transmit power using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values.
Wherein, the obtaining module is specifically configured to: obtaining the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values configured by the base station for the UE through radio resource control protocol (RRC) signaling; or, the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values indicated by the base station for the UE are obtained through physical layer signaling. The sets of SRS power control parameters and/or the SRS power compensation values are stored in the configuration parameters of the aperiodic sounding reference signal (a-SRS) in the RRC signaling or the configuration parameters of the uplink power control parameters.
Preferably, the physical layer signaling is Downlink Control Information (DCI) including an a-SRS trigger command. The plurality of sets of SRS power control parameters correspond to the content of the A-SRS trigger command and/or the format of the DCI; alternatively, the plurality of SRS power offset values may correspond to the content of the a-SRS trigger command and/or the format of the DCI.
If the multiple sets of SRS power control parameters correspond to the content of the a-SRS trigger command, the determining module is specifically configured to: and selecting corresponding SRS power control parameters and/or SRS power compensation values according to the content of the A-SRS triggering command, and determining the triggered transmitting power of the A-SRS according to the selected SRS power control parameters and/or the SRS power compensation values. If the sets of SRS power control parameters correspond to the DCI format, the determining module is specifically configured to: and selecting a corresponding SRS power control parameter and/or SRS power compensation value according to the format of the DCI, and determining the transmitting power of the triggered A-SRS according to the selected SRS power control parameter and/or the SRS power compensation value.
In addition, the determining module is specifically configured to: and determining the transmission power of a plurality of periodic sounding reference signals (P-SRS) in one carrier by using the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values. Wherein the plurality of P-SRS in the one carrier include: and a plurality of P-SRS with different periods or the same period in one carrier. The power control parameters are in one-to-one correspondence or one-to-many correspondence with the different P-SRS of the plurality of periods.
The UE obtains the power control parameter and/or the power compensation value from the base station, so that the transmitting power of the SRS transmitted aiming at different purposes can be more flexibly controlled, the accuracy of channel measurement is ensured, the interference is reduced, and the power consumption of the UE is saved.
Fig. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention, where the base station includes a processing module 71 and a sending module 72, where:
a processing module to configure or indicate a plurality of sets of Sounding Reference Signal (SRS) power control parameters and/or a plurality of SRS power compensation values for a User Equipment (UE);
a sending module, configured to send the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values to the UE.
Wherein, the processing module is specifically configured to: independently configuring the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values for the UE; or configuring the plurality of sets of SRS power control parameters or the plurality of SRS power compensation values for the UE according to a predetermined relationship function. Or, the processing module is specifically configured to: and configuring the plurality of sets of SRS power control parameters for the UE according to the power control parameters of a Physical Uplink Shared Channel (PUSCH) or the power control parameters of the Physical Uplink Control Channel (PUCCH).
The base station provides the power control parameter and/or the power compensation value of the SRS for the UE, so that the UE can control the transmitting power of the SRS.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.

Claims (21)

1. A method for controlling Sounding Reference Signal (SRS) transmission power is characterized by comprising the following steps:
user Equipment (UE) obtains a plurality of sets of SRS power control parameters and/or a plurality of SRS power compensation values provided by a base station for the UE;
determining, by the UE, a transmit power of the SRS using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values;
the plurality of sets of SRS power control parameters correspond to the content of a non-periodic sounding reference signal A-SRS trigger command and/or the format of downlink control information DCI; or,
the plurality of SRS power compensation values correspond to the content of the A-SRS trigger command and/or the format of the DCI; or,
and the UE determines the transmission power of a plurality of periodic sounding reference signals (P-SRS) in one carrier by using the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values.
2. The method of claim 1, wherein:
the method for the UE to obtain the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values provided by the base station for the UE includes the following steps:
the UE obtains the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values configured for the UE by a base station through radio resource control protocol (RRC) signaling; or
And the UE obtains the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values indicated by the base station for the UE through physical layer signaling.
3. The method of claim 2, wherein:
the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values are stored in the configuration parameters of the non-periodic sounding reference signal A-SRS or the configuration parameters of the uplink power control parameters in the RRC signaling.
4. The method of claim 2, wherein:
and the physical layer signaling is downlink control information DCI containing an A-SRS triggering command.
5. The method of claim 1, wherein:
if the plurality of sets of SRS power control parameters correspond to the content of the A-SRS trigger command, the UE determining the SRS transmission power by using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values, including:
the UE selects corresponding SRS power control parameters and/or SRS power compensation values according to the content of the A-SRS triggering command, and determines the triggered transmitting power of the A-SRS according to the selected SRS power control parameters and/or the SRS power compensation values; or
If the multiple sets of SRS power control parameters correspond to the DCI format, the determining, by the UE, the SRS transmit power using one of the multiple sets of SRS power control parameters and/or one of the multiple SRS power offset values includes:
and the UE selects a corresponding SRS power control parameter and/or SRS power compensation value according to the format of the DCI, and determines the transmitting power of the triggered A-SRS according to the selected SRS power control parameter and/or the SRS power compensation value.
6. The method of claim 1, wherein:
the plurality of P-SRSs within the one carrier include: and a plurality of P-SRS with different periods or the same period in one carrier.
7. The method of claim 6, wherein:
the corresponding relations between the multiple sets of SRS power control parameters and the multiple sets of P-SRS with different periods are one-to-one correspondence or one-to-many correspondence.
8. The method of claim 7, wherein:
the corresponding relation is obtained by the base station indicating the UE or the UE according to a preset corresponding rule.
9. A method for processing parameter information, the method comprising:
a base station configures or indicates a plurality of sets of SRS power control parameters and/or a plurality of SRS power compensation values for User Equipment (UE);
the base station sends the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values to the UE;
and when the SRS is the aperiodic sounding reference signal A-SRS, the base station also sends the content of the A-SRS trigger command and/or the format of downlink control information DCI to the UE.
10. The method of claim 9, wherein:
the base station configures a plurality of sets of SRS power control parameters and/or a plurality of SRS power compensation values for the UE, and the method comprises the following steps:
the base station independently configures the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values for the UE; or
And the base station configures the plurality of sets of SRS power control parameters or the plurality of SRS power compensation values for the UE according to a preset relation function.
11. The method of claim 9, wherein:
the base station configuring a plurality of sets of SRS power control parameters for the UE comprises the following steps:
and the base station configures the plurality of sets of SRS power control parameters for the UE according to the power control parameters of a Physical Uplink Shared Channel (PUSCH) or the power control parameters of the Physical Uplink Control Channel (PUCCH).
12. A user equipment, UE, comprising:
an obtaining module, configured to obtain multiple sets of SRS power control parameters and/or multiple SRS power compensation values of sounding reference signals provided by a base station for the UE;
a determining module for determining a transmit power of the SRS using one of the plurality of sets of SRS power control parameters and/or one of the plurality of SRS power compensation values;
the plurality of sets of SRS power control parameters correspond to the content of a non-periodic sounding reference signal A-SRS trigger command and/or the format of downlink control information DCI; or,
the plurality of SRS power compensation values correspond to content of the A-SRS trigger command and/or a format of the DCI; or,
wherein the transmission power of a plurality of periodic sounding reference signals P-SRS in one carrier is determined by using the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values.
13. The UE of claim 12, wherein:
the obtaining module is specifically configured to:
obtaining the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values configured for the UE by a base station through radio resource control protocol (RRC) signaling; or
And obtaining the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values indicated by the base station for the UE through physical layer signaling.
14. The UE of claim 13, wherein:
the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values are stored in the configuration parameters of the non-periodic sounding reference signal A-SRS or the configuration parameters of the uplink power control parameters in the RRC signaling.
15. The UE of claim 13, wherein:
and the physical layer signaling is downlink control information DCI containing an A-SRS triggering command.
16. The UE of claim 12, wherein:
if the multiple sets of SRS power control parameters correspond to the content of the a-SRS trigger command, the determining module is specifically configured to:
selecting corresponding SRS power control parameters and/or SRS power compensation values according to the content of the A-SRS triggering command, and determining the triggered transmitting power of the A-SRS according to the selected SRS power control parameters and/or the SRS power compensation values; or
If the multiple sets of SRS power control parameters correspond to the DCI format, the determining module is specifically configured to:
and selecting a corresponding SRS power control parameter and/or SRS power compensation value according to the format of the DCI, and determining the transmitting power of the triggered A-SRS according to the selected SRS power control parameter and/or the SRS power compensation value.
17. The UE of claim 13, wherein:
the plurality of P-SRSs within the one carrier include: and a plurality of P-SRS with different periods or the same period in one carrier.
18. The UE of claim 17, wherein:
the corresponding relations between the multiple sets of SRS power control parameters and the multiple sets of P-SRS with different periods are one-to-one correspondence or one-to-many correspondence.
19. A base station, comprising:
the system comprises a processing module, a power control module and a power compensation module, wherein the processing module is used for configuring or indicating a plurality of sets of SRS power control parameters and/or a plurality of SRS power compensation values for User Equipment (UE);
a sending module, configured to send the multiple sets of SRS power control parameters and/or the multiple SRS power compensation values to the UE;
and the sending module is also used for sending the content of the A-SRS trigger command and/or the format of the downlink control information DCI to the UE when the SRS is the aperiodic sounding reference signal A-SRS.
20. The base station of claim 19, wherein:
the processing module is specifically configured to: independently configuring the plurality of sets of SRS power control parameters and/or the plurality of SRS power compensation values for the UE; or configuring the plurality of sets of SRS power control parameters or the plurality of SRS power compensation values for the UE according to a predetermined relation function.
21. The base station of claim 19, wherein:
the processing module is specifically configured to: and configuring the plurality of sets of SRS power control parameters for the UE according to the power control parameters of a Physical Uplink Shared Channel (PUSCH) or the power control parameters of the Physical Uplink Control Channel (PUCCH).
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