CN116633409A - Method and device for selecting TPMI/RI when SRS and PUSCH signal power are not matched - Google Patents

Method and device for selecting TPMI/RI when SRS and PUSCH signal power are not matched Download PDF

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CN116633409A
CN116633409A CN202310913770.4A CN202310913770A CN116633409A CN 116633409 A CN116633409 A CN 116633409A CN 202310913770 A CN202310913770 A CN 202310913770A CN 116633409 A CN116633409 A CN 116633409A
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power
srs
pusch
reference signal
base station
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CN116633409B (en
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许秋平
杨妍
赵强
陈禹
吴昊
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Shenzhen Guoren Wireless Communication Co Ltd
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Shenzhen Guoren Wireless Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

Abstract

The application relates to a method and a device for selecting TPMI/RI when SRS and PUSCH signal power are not matched, according to the difference value between the pre-configured downlink reference signal power of a base station and the acquired downlink reference signal receiving power reported by UE, and according to the downlink loss, the RE level reference signal target receiving power of the PUSCH preset by the base station and the RE level reference signal target receiving power of the SRS preset by the base station, the power difference ratio of the RE level reference signal actual receiving power of the PUSCH to the RE level reference signal actual receiving power of the SRS is calculated, so that when the signal power of the SRS and the PUSCH are not matched, the optimal TPMI/RI can be obtained based on the power difference ratio and an MMSE equalization algorithm, and the channel capacity is maximized.

Description

Method and device for selecting TPMI/RI when SRS and PUSCH signal power are not matched
Technical Field
The application relates to the technical field of mobile communication, in particular to a method and a device for selecting TPMI/RI when SRS and PUSCH signal power are not matched.
Background
MIMO (Multiple Input Multiple Output) technology mainly increases the data transmission rate based on the uncorrelated nature of the transmission channels between multiple transmit antennas. Specifically, the multi-antenna configuration of the transmitting end is utilized to pre-encode one or more layers of PUSCH (Physical Uplink Shared Channel ) data and then transmit the data simultaneously. According to different channel environments, different TPMI (Precoding Matrix Indicator ) and different RI (Rank Indicator) are calculated, so that the PUSCH can dynamically adjust the number of layers of transmitted data and the precoding matrix to achieve the purpose of maximizing the channel capacity C.
But if the power of each RE (Resource Element) of the SRS (Sounding Reference Signal ) and the power of the PUSCH are not matched, the TPMI/RI calculated directly based on the basic formula cannot actually maximize the channel capacity C.
In view of this, it is necessary to improve the problem that the channel capacity cannot be maximized when the signal power of SRS and PUSCH are not matched, so as to improve the channel spectrum efficiency and achieve the practical maximization of the channel capacity.
Disclosure of Invention
The technical problem to be solved by the application is to provide a method and a device for selecting TPMI/RI when the power of SRS and the power of PUSCH signals are not matched, and the optimal TPMI/RI can be still selected when the power of SRS and the power of PUSCH signals are not matched, so that the channel capacity is maximized.
In order to solve the technical problems, the application provides a method for selecting TPMI/RI when SRS and PUSCH signal power are not matched, which comprises the following steps:
s1, obtaining downlink path loss after filtering according to a difference value between downlink reference signal power pre-configured by a base station and downlink reference signal receiving power reported by an acquired UE;
s2, according to the downlink loss, the RE-level reference signal target receiving power of the PUSCH preset by the base station and the RE-level reference signal target receiving power of the SRS preset by the base station are respectively calculated to obtain the RE-level reference signal actual receiving power of the PUSCH, the RE-level reference signal actual receiving power of the SRS and the power difference ratio of the RE-level reference signal target receiving power and the RE-level reference signal actual receiving power of the SRS;
s3, traversing different RI and TPMI based on the power difference ratio and MMSE equalization algorithm, and calculating to obtain a signal-to-interference-and-noise ratio SINR i According to SINR i Obtaining channel capacity according to a channel capacity calculation formula, and outputting a TPMI and RI corresponding to the maximum channel capacity; wherein the channel capacity calculation formula is as follows。
Further, the downlink lossThe method comprises the steps of carrying out a first treatment on the surface of the Where pl_dl=ptx_dlrsrp_dl, ptx_dl is a downlink reference signal power preconfigured by the base station, rsrp_dl is a downlink reference signal received power reported by the UE acquired by the base station, pl_dl is a difference between the two, and alpha is a filtering factor.
Further, the RE level reference signal of the PUSCH actually receives power； wherein ,PCMAX Is the maximum transmitting power of UE preset by a base station, P O_PUSCH Is RE level reference signal target receiving power of PUSCH preset by base station, 2 μ Is subcarrier spacing power offset, μ is subcarrier spacing index, +.>RB number, α, for PUSCH scheduling PUSCH Is a PUSCH (physical uplink shared channel) path loss conversion factor preconfigured by a base station, and PL (physical downlink) is downlink path loss,>the MCS power adjustment quantity, f is the PUSCH power adjustment quantity issued by the base station;
RE level reference signal actual received power of SRS； wherein ,PO_SRS Is RE level reference signal target receiving power of SRS preset by base station, alpha SRS The SRS path loss conversion factor is preconfigured by the base station, and h is the SRS power adjustment quantity issued by the base station.
Further, the actual received power P of the RE-level reference signal of the PUSCH PUSCH And the RE-level reference signal actual received power P of SRS SRS Power difference ratio of the two； wherein , ； />is the total number of REs of all RBs of the SRS,is the total number of REs for all RBs of PUSCH.
Further, the signal to interference plus noise ratio； wherein , ； />w is the precoding matrix, H is the channel response, H H Is the transposed conjugate of the channel response H, rnn is the noise covariance matrix, +.>Is the noise power, I is the number of layers x the number of layers of the identity matrix.
In order to solve the technical problem, the application also provides a device for selecting the TPMI/RI when the SRS and the PUSCH signal power are not matched, which comprises a downlink path loss calculation unit, a power difference calculation unit and a TPMI/RI unit;
the downlink path loss calculation unit obtains downlink path loss through filtering according to the difference value between the downlink reference signal power pre-configured by the base station and the obtained downlink reference signal receiving power reported by the UE;
the power difference calculation unit calculates the actual receiving power of the RE level reference signal of the PUSCH, the actual receiving power of the RE level reference signal of the SRS and the power difference ratio of the RE level reference signal of the SRS and the RE level reference signal of the SRS respectively according to the downlink loss;
the TPMI/RI unit traverses different RI and TPMI based on the power difference ratio and MMSE equalization algorithm, and calculates the SINR i According to SINR i Obtaining channel capacity according to a channel capacity calculation formula, and outputting a TPMI and RI corresponding to the maximum channel capacity; wherein the channel capacity calculation formula is as follows。
Further, the downlink lossThe method comprises the steps of carrying out a first treatment on the surface of the Where pl_dl=ptx_dlrsrp_dl, ptx_dl is a downlink reference signal power preconfigured by the base station, rsrp_dl is a downlink reference signal received power reported by the UE acquired by the base station, pl_dl is a difference between the two, and alpha is a filtering factor.
Further, the actual received power of the RE-level reference signal of the PUSCH； wherein ,PCMAX Is the maximum transmitting power of UE preset by a base station, P O_PUSCH Is RE level reference signal target receiving power of PUSCH preset by base station, 2 μ Is subcarrier spacing power offset, μ is subcarrier spacing index, +.>RB number, α, for PUSCH scheduling PUSCH Is a PUSCH (physical uplink shared channel) path loss conversion factor preconfigured by a base station, and PL (physical downlink) is downlink path loss,>the MCS power adjustment quantity, f is the PUSCH power adjustment quantity issued by the base station;
RE level reference signal actual received power of SRS； wherein ,PO_SRS Is RE level reference signal target receiving power of SRS preset by base station, alpha SRS The SRS path loss conversion factor is preconfigured by the base station, and h is the SRS power adjustment quantity issued by the base station.
Further, the actual received power PPUSCH of the RE-level reference signal of the PUSCH and the actual received power PSRS of the RE-level reference signal of the SRS have a power difference ratioThe method comprises the steps of carrying out a first treatment on the surface of the Wherein Δ=； />Is the total number of REs of all RBs of the SRS,is the total number of REs for all RBs of PUSCH.
Further, the signal to interference plus noise ratio； wherein , ； />w is the precoding matrix, H is the channel response, HH is the channel response HTransposed conjugate, rnn is noise covariance matrix,>is the noise power, I is the number of layers x the number of layers of the identity matrix.
Compared with the prior art, the application has the following beneficial effects: according to the application, the power difference ratio of the RE-level reference signal actual receiving power of the PUSCH and the RE-level reference signal actual receiving power of the SRS is calculated in advance, so that when the signal powers of the SRS and the PUSCH are not matched, the optimal TPMI/RI can be obtained based on the power difference ratio and the MMSE equalization algorithm, and the channel capacity is maximized.
Drawings
Fig. 1 is a method step diagram of selecting TPMI/RI when SRS and PUSCH signal powers do not match in an embodiment of the present application;
fig. 2 is a block diagram of a device for selecting TPMI/RI when SRS and PUSCH signal powers do not match in an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged where appropriate to implement in other sequences than those of the embodiments of the application.
As shown in fig. 1, the method for selecting TPMI/RI when SRS and PUSCH signal power are not matched in the embodiment of the present application includes the following steps:
s1, obtaining downlink path loss after filtering according to a difference value between downlink reference signal power pre-configured by a base station and downlink reference signal receiving power reported by an acquired UE;
specifically, downlink lossThe method comprises the steps of carrying out a first treatment on the surface of the Where pl_dl=ptx_dlrsrp_dl, ptx_dl is a downlink reference signal power preconfigured by the base station, rsrp_dl is a downlink reference signal received power reported by the UE acquired by the base station, pl_dl is a difference between the two, and alpha is a filtering factor.
S2, according to downlink loss, the RE-level reference signal target receiving power of the PUSCH preset by the base station and the RE-level reference signal target receiving power of the SRS preset by the base station are respectively calculated to obtain the RE-level reference signal actual receiving power of the PUSCH, the RE-level reference signal actual receiving power of the SRS and the power difference ratio of the RE-level reference signal target receiving power and the RE-level reference signal actual receiving power of the SRS;
specifically, the actual received power of the RE-level reference signal of the PUSCH； wherein ,PCMAX Is the maximum transmitting power of UE preset by a base station, P O_PUSCH Is RE level reference signal target receiving power of PUSCH preset by base station, 2 μ Is subcarrier spacing power offset, μ is subcarrier spacing index, +.>RB number, α, for PUSCH scheduling PUSCH Is a PUSCH (physical uplink shared channel) path loss conversion factor preconfigured by a base station, and PL (physical downlink) is downlink path loss,>the MCS (Modulation and Coding Scheme ) power adjustment amount, and f is the PUSCH power adjustment amount issued by the base station.
RE-level reference signal actual received power of SRS； wherein ,PO_SRS Is RE level reference signal target receiving power of SRS preset by base station, 2 μ Is subcarrier spacing power offset, μ is subcarrier spacing index, +.>Is the RB number of SRS, alpha SRS The SRS path loss conversion factor is preconfigured by the base station, PL is downlink path loss, and h is SRS power adjustment quantity issued by the base station.
In this embodiment, the RE-level reference signal actual received power P of PUSCH PUSCH And the RE-level reference signal actual received power P of SRS SRS Power difference ratio of the twoThe method comprises the steps of carrying out a first treatment on the surface of the Wherein Δ=； />Is the total number of REs of all RBs of the SRS,is the total number of REs for all RBs of PUSCH.
S3, traversing different RI and TPMI based on the power difference ratio and MMSE equalization algorithm, and calculating to obtain SINR i According to SINR i Obtaining channel capacity according to a channel capacity calculation formula, and outputting a TPMI and RI corresponding to the maximum channel capacity; wherein, the channel capacity calculation formula is as follows。
Specifically, in this embodiment, the signal-to-interference-and-noise ratioAnd traversing all RI and TPMI in different transmission modes, calculating to obtain different channel capacities C, and outputting RI and TPMI corresponding to the maximum channel capacity.
wherein , ； />w is the precoding matrix, H is the channel response, H H Is the transposed conjugate of the channel response H, rnn is the noise covariance matrix, +.>Is the noise power, I is the number of layers x the number of layers of the identity matrix.
In the present embodiment, the channel response H, noise powerThe noise vector can be obtained through a signal Y received by a receiving end, a signal X sent by a sending end, a channel model y=hx+n, and a channel estimation algorithm, wherein n is a noise vector.
Step S3 is described below by calculating a single layer two port transmission mode and a two layer two port transmission mode, with the maximum channel capacity in these two modes being taken as an example.
As shown in table 1, when PUSCH is a single layer two port transmission mode, ri=1,the method comprises the following steps of: />Mapped TPMI 0 =0； />Mapped TPMI 1 =1； />Mapped TPMI 2 =2； Mapped TPMI 3 =3； />Mapped TPMI 4 =4； />Mapped TPMI 5 =5; where j is a complex number.
TABLE 1
Thus, W according to single layer two port transmission mode 0 -W 5 The signal-to-interference-and-noise ratio calculation formula and the channel capacity calculation formula can obtain 6 channel capacities, which are C respectively 0 -C 5 。
As shown in table 2 below, when PUSCH is a two-layer two-port transmission mode, ri=2,the method comprises the following steps of: />Mapped TPMI 0 =0； />Mapped TPMI 1 =1； />Mapped TPMI 2 =2。
TABLE 2
Thus, W according to two-layer two-port transmission mode 0 -W 2 The signal-to-interference-and-noise ratio calculation formula and the channel capacity calculation formula can obtain 3 channel capacities, which are C respectively 0 -C 2 。
And finally, taking the largest channel capacity in the 9 channel capacities as a final channel capacity C, and outputting the corresponding TPMI/RI.
As shown in fig. 2, the apparatus for selecting TPMI/RI when SRS and PUSCH signal power are not matched in the embodiment of the present application includes a downlink path loss calculation unit, a power difference calculation unit, and a TPMI/RI unit.
And the downlink path loss calculation unit obtains the downlink path loss through filtering according to the difference value between the downlink reference signal power pre-configured by the base station and the obtained downlink reference signal receiving power reported by the UE.
Specifically, downlink lossThe method comprises the steps of carrying out a first treatment on the surface of the Where pl_dl=ptx_dlrsrp_dl, ptx_dl is a downlink reference signal power preconfigured by the base station, rsrp_dl is a downlink reference signal received power reported by the UE acquired by the base station, pl_dl is a difference between the two, and alpha is a filtering factor.
And the power difference calculation unit is used for respectively calculating the actual received power of the RE level reference signal of the PUSCH, the actual received power of the RE level reference signal of the SRS and the power difference ratio of the RE level reference signal of the PUSCH and the RE level reference signal of the SRS according to the downlink loss and the RE level reference signal target received power of the PUSCH preset by the base station and the RE level reference signal target received power of the SRS preset by the base station.
Specifically, the actual received power of the RE-level reference signal of the PUSCH； wherein ,PCMAX Is the maximum transmitting power of UE preset by a base station, P O_PUSCH Is RE level reference signal target receiving power of PUSCH preset by base station, 2 μ Is subcarrier spacing power offset, μ is subcarrier spacing index, +.>RB number, α, for PUSCH scheduling PUSCH Is a PUSCH (physical uplink shared channel) path loss conversion factor preconfigured by a base station, and PL (physical downlink) is downlink path loss,>the MCS power adjustment quantity, f is the PUSCH power adjustment quantity issued by the base station;
RE-level reference signal actual received power of SRS； wherein ,PO_SRS Is RE level reference signal target receiving power of SRS preset by base station, alpha SRS The SRS path loss conversion factor is preconfigured by the base station, and h is the SRS power adjustment quantity issued by the base station.
RE level of PUSCHReference signal actual received power P PUSCH And the RE-level reference signal actual received power P of SRS SRS Power difference ratio of the twoThe method comprises the steps of carrying out a first treatment on the surface of the Wherein Δ=； />Is the total number of REs of all RBs of the SRS,is the total number of REs for all RBs of PUSCH.
The TPMI/RI unit traverses different RI and TPMI based on the power difference ratio and MMSE equalization algorithm, and calculates the SINR i According to SINR i Obtaining channel capacity according to a channel capacity calculation formula, and outputting a TPMI and RI corresponding to the maximum channel capacity; wherein, the channel capacity calculation formula is as follows。
Specifically, in this embodiment, the signal-to-interference-and-noise ratioAnd traversing all RI and TPMI in different transmission modes, calculating to obtain different channel capacities C, and outputting RI and TPMI corresponding to the maximum channel capacity.
wherein , ； />w is the precoding matrix, H is the channel response, H H Is the transposed conjugate of the channel response H, rnn is the noise covariance matrix, +.>Is the noise power, I is the number of layers xIdentity matrix of layer number.
In the present embodiment, the channel response H, noise powerThe noise vector can be obtained through a signal Y received by a receiving end, a signal X sent by a sending end, a channel model y=hx+n, and a channel estimation algorithm, wherein n is a noise vector.
In summary, the present application calculates the power difference ratio between the actual received power of the RE-level reference signal of the PUSCH and the actual received power of the RE-level reference signal of the SRS in advance, so that when the signal powers of the SRS and the PUSCH are not matched, the optimal TPMI/RI can be obtained based on the power difference ratio and the MMSE equalization algorithm, and the channel capacity is maximized.
The foregoing examples only illustrate preferred embodiments of the application, which are described in more detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that modifications and improvements can be made without departing from the spirit of the application, such as combining different features of the various embodiments, which are all within the scope of the application.

Claims (10)

1. The method for selecting the TPMI/RI when the power of the SRS is not matched with that of the PUSCH signal is characterized by comprising the following steps:
s1, obtaining downlink path loss after filtering according to a difference value between downlink reference signal power pre-configured by a base station and downlink reference signal receiving power reported by an acquired UE;
s2, according to the downlink loss, the RE-level reference signal target receiving power of the PUSCH preset by the base station and the RE-level reference signal target receiving power of the SRS preset by the base station are respectively calculated to obtain the RE-level reference signal actual receiving power of the PUSCH, the RE-level reference signal actual receiving power of the SRS and the power difference ratio of the RE-level reference signal target receiving power and the RE-level reference signal actual receiving power of the SRS;
s3, traversing different RI and TPMI based on the power difference ratio and MMSE equalization algorithm, and calculating to obtain a signal-to-interference-and-noise ratio SINR i According to signal-to-interference noiseSpecific SINR i Obtaining channel capacity according to a channel capacity calculation formula, and outputting a TPMI and RI corresponding to the maximum channel capacity; wherein the channel capacity calculation formula is as follows。
2. The method for selecting TPMI/RI when SRS and PUSCH signal power do not match according to claim 1, wherein the downlink lossThe method comprises the steps of carrying out a first treatment on the surface of the Where pl_dl=ptx_dlrsrp_dl, ptx_dl is a downlink reference signal power preconfigured by the base station, rsrp_dl is a downlink reference signal received power reported by the UE acquired by the base station, pl_dl is a difference between the two, and alpha is a filtering factor.
3. The method for selecting TPMI/RI when SRS and PUSCH signal power do not match according to claim 1, wherein RE-level reference signal actual received power of PUSCH； wherein ,PCMAX Is the maximum transmitting power of UE preset by a base station, P O_PUSCH Is RE level reference signal target receiving power of PUSCH preset by base station, 2 μ Is subcarrier spacing power offset, μ is subcarrier spacing index, +.>RB number, α, for PUSCH scheduling PUSCH Is a PUSCH (physical uplink shared channel) path loss conversion factor preconfigured by a base station, and PL (physical downlink) is downlink path loss,>the MCS power adjustment quantity, f is the PUSCH power adjustment quantity issued by the base station;
RE level reference signal actual received power of SRS； wherein ,PO_SRS Is RE level reference signal target receiving power of SRS preset by base station, alpha SRS The SRS path loss conversion factor is preconfigured by the base station, and h is the SRS power adjustment quantity issued by the base station.
4. The method for selecting TPMI/RI when SRS and PUSCH signal power do not match according to claim 3, wherein RE-level reference signal actual received power P of PUSCH PUSCH And the RE-level reference signal actual received power P of SRS SRS Power difference ratio of the twoThe method comprises the steps of carrying out a first treatment on the surface of the Wherein (1)>；Is the total RE number of all RBs of SRS, +.>Is the total number of REs for all RBs of PUSCH.
5. The method for selecting TPMI/RI when SRS and PUSCH signal powers do not match as set forth in claim 1 wherein the signal-to-interference-and-noise ratio； wherein ,/>；/>W is the precoding matrix, H is the channel response, H H Is the transposed conjugate of the channel response H, rnn is the noise covariance matrix, +.>Is the noise power, I is the number of layers x the number of layers of the identity matrix.
6. The device for selecting the TPMI/RI when the SRS and the PUSCH are not matched in power is characterized by comprising a downlink path loss calculation unit, a power difference calculation unit and a TPMI/RI unit;
the downlink path loss calculation unit obtains downlink path loss through filtering according to the difference value between the downlink reference signal power pre-configured by the base station and the obtained downlink reference signal receiving power reported by the UE;
the power difference calculation unit calculates the actual receiving power of the RE level reference signal of the PUSCH, the actual receiving power of the RE level reference signal of the SRS and the power difference ratio of the RE level reference signal of the SRS and the RE level reference signal of the SRS respectively according to the downlink loss;
the TPMI/RI unit traverses different RI and TPMI based on the power difference ratio and MMSE equalization algorithm, and calculates the SINR i According to SINR i Obtaining channel capacity according to a channel capacity calculation formula, and outputting a TPMI and RI corresponding to the maximum channel capacity; wherein the channel capacity calculation formula is as follows。
7. The apparatus for selecting TPMI/RI when SRS and PUSCH signal power do not match in claim 6, wherein the downlink lossThe method comprises the steps of carrying out a first treatment on the surface of the Where pl_dl=ptx_dlrsrp_dl, ptx_dl is a downlink reference signal power preconfigured by the base station, rsrp_dl is a downlink reference signal received power reported by the UE acquired by the base station, pl_dl is a difference between the two, and alpha is a filtering factor.
8. As claimed inThe apparatus for selecting TPMI/RI when SRS and PUSCH signal power are not matched as in claim 6, wherein the PUSCH RE-level reference signal actual received power； wherein ,PCMAX Is the maximum transmitting power of UE preset by a base station, P O_PUSCH Is RE level reference signal target receiving power of PUSCH preset by base station, 2 μ Is subcarrier spacing power offset, μ is subcarrier spacing index, +.>RB number, α, for PUSCH scheduling PUSCH Is a PUSCH (physical uplink shared channel) path loss conversion factor preconfigured by a base station, and PL (physical downlink) is downlink path loss,>the MCS power adjustment quantity, f is the PUSCH power adjustment quantity issued by the base station;
RE level reference signal actual received power of SRS； wherein ,PO_SRS Is RE level reference signal target receiving power of SRS preset by base station, alpha SRS The SRS path loss conversion factor is preconfigured by the base station, and h is the SRS power adjustment quantity issued by the base station.
9. The apparatus for selecting TPMI/RI when SRS and PUSCH signal power do not match as set forth in claim 6, wherein the PUSCH RE-level reference signal actual received power P PUSCH And the RE-level reference signal actual received power P of SRS SRS Power difference ratio of the twoThe method comprises the steps of carrying out a first treatment on the surface of the Wherein Δ= =>；Is the total RE number of all RBs of SRS, +.>Is the total number of REs for all RBs of PUSCH.
10. The apparatus for selecting TPMI/RI when SRS and PUSCH signal powers do not match in claim 8, wherein the signal-to-interference-and-noise ratio； wherein ,/>；/>W is the precoding matrix, H is the channel response, H H Is the transposed conjugate of the channel response H, rnn is the noise covariance matrix, +.>Is the noise power, I is the number of layers x the number of layers of the identity matrix.
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