CN107994932A - A kind of beam forming sending method and device based on weighting detectable signal - Google Patents
A kind of beam forming sending method and device based on weighting detectable signal Download PDFInfo
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- CN107994932A CN107994932A CN201610945225.3A CN201610945225A CN107994932A CN 107994932 A CN107994932 A CN 107994932A CN 201610945225 A CN201610945225 A CN 201610945225A CN 107994932 A CN107994932 A CN 107994932A
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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
- H04B7/0413—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
-
- 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
-
- 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
-
- 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
- H04B7/0617—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 for beam forming
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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
- H04B7/0634—Antenna weights or vector/matrix coefficients
Abstract
This application discloses a kind of beam forming sending method based on weighting detectable signal, described method includes following steps：When user equipment determines to need to send detection reference signal SRS using beam forming BF weighting schemes, user equipment calculates the BF weighing vectors or matrix of SRS transmissions according to descending channel information；User equipment sends SRS to base station by the BF weighing vectors or matrix-style weighting.The advantages that the application has increase SRS channel coverage distances, improves precision of channel estimation, and the BF weight computing complexities of base station down transmitting are extremely low.
Description
Technical field
This application involves the communications field, more particularly to a kind of beam forming sending method and dress based on weighting detectable signal
Put.
Background technology
Beam forming (English：Beam forming, BF) technology be multi-aerial radio communication system important technology.Pass through
To the more preferable match channels in direction for adding different weights, controlling transmission wave beam of data on different antennas, energy can be concentrated
Amount enhancing covering.In addition the data flow of different user is transmitted by Spatial Dimension on identical running time-frequency resource, improves spatial multiplexing gain.
The data flow of space division transmission different user makes the hair of each stream, it is necessary to the transmission weights of each data flow of each user of careful design
Send direction matching own channel feature vector (eigen-mode) direction and to it is other drain off to disturb done in the two smaller demands
To reasonable compromise.
In order to increase covering or hoist capacity, base station can use BF technologies in downlink.In higher frequency band, such as 15GHz/
28GHz/38GHz/60GHz/70GHz etc., since radio wave propagation loss is larger, so BF be almost commercial system can not or
Scarce technology.Existing customer terminal equipment (English：Customer Premise Equipment, CPE) use omnidirectional's mode
Send detection reference signal (English：Sounding reference signal, SRS), power dissipation, SRS channel coverage distances
It is short, evolution base station (English：Evolved Node B, eNB) receive SRS SNR it is low, SRS precision of channel estimation is not high.
The content of the invention
The application provides a kind of beam forming sending method and device based on weighting detectable signal.SRS letters can be increased
Road coverage distance, improves precision of channel estimation.
First aspect, there is provided the beam forming sending method based on weighting detectable signal, described method includes following steps：
When user equipment determines to need to send detection reference signal SRS using beam forming BF weighting schemes, user equipment is according to downlink
Channel information calculates the BF weighing vectors or matrix that SRS is sent；User equipment is sent out to base station with the BF weighing vectors or matrix
Send weighting SRS.
The method that first aspect provides sends weighting SRS by BF weighing vectors or matrix so that increase SRS channel coverings
Distance, improves precision of channel estimation.
In a kind of alternative, the BF weighing vectors or matrix tool that SRS transmissions are calculated according to descending channel information
Body, including：
F=U*, U HdLeft singular matrix, V HdRight singular matrix, λ is the singular value of Hd, wherein, F is SRS
BF weights, U*For the conjugate matrices of U, VHThe associate matrix of matrix V.
The specific calculation of BF weighing vectors or matrix is provided in a kind of alternative, supports first aspect skill
The realization of art scheme.
In alternative dispensing means, the user equipment sends weighting to base station with the BF weighing vectors or matrix
SRS is specific, including：
User equipment receives Physical Downlink Control Channel or the semi-static instruction that base station is sent, and such as physical down controls
Carried in channel or semi-static instruction user equipment using BF weighting schemes send SRS instruction when, user equipment determine need
Beam forming BF weighting schemes are used to send detection reference signal.
In alternative dispensing means, SRS is sent by carrying weighting in Physical Downlink Control Channel or semi-static instruction
Instruction enable user equipment start BF weighting send SRS.
In another alternative, the user equipment sends weighting to base station with the BF weighing vectors or matrix
SRS is specific, including：User equipment measures RSRP or CQI according to CRS, as RSRP or CQI is less than given threshold, it is determined that needs
SRS is sent using BF weighting schemes.
In another alternative, whether user equipment, which can measure RSRP or CQI automatic decisions according to CRS and use, adds
Power sends SRS.
In latter alternative, the user equipment sends weighting to base station with the BF weighing vectors or matrix
SRS is specific, including：Whether the configuration that using BF weighting by the way of sends SRS is had in the static configuration of user equipment detection storage
Information, as there is the configuration information that SRS is sent by the way of BF weightings in the static configuration, user equipment confirms to need to use
Beam forming BF weighting schemes send SRS.
In latter alternative, user equipment can choose whether that weighting sends SRS by way of static configuration.
Second aspect, there is provided a kind of beam forming method based on weighting detectable signal, described method includes following steps：
Base station receives the detection reference signal SRS that user equipment uses beam forming BF weighting schemes to send, and is estimated according to the SRS channels
Meter；Base station calculates the BF weights of the single user SU or multi-user MU of downlink transmission according to channel estimation results, with the BF weights pair
The downlink data weighting of SU or MU is sent.
The technical solution that second aspect provides supports the realization of first aspect scheme, and the SRS due to receiving
Signal quality is good, so the precision according to the obtained channel estimations of SRS also improves.
In a kind of alternative, the base station calculates the single user SU or multi-purpose of downlink transmission according to channel estimation results
The BF weights of family MU include：
Hu,eff=HuF=V*ST(U*)HU*=V*STFormula 2
Wherein, Hd,effChannel estimation value for eNB to single user,
In SU, to Hd,effRow vector conjugate transposition and normalized after obtained matrix be SU BF matrixes；
In MU, the corresponding H of each user equipment is calculated by formula 2 and formula 3D, eff, it is then that each user equipment is corresponding
Hd,effRow vector conjugate transposition and normalized after the obtained BF matrixes of each user equipment, by each user equipment
BF matrixes extract Li column vector of the user and are stitched together to obtain splicing matrix, and the Li is the data flow of i-th of user's transmitting
Each row of the splicing matrix are accomplished that the rectangular projection processing of other all row obtains the BF matrixes of MU by number.
In alternative dispensing means, the weighting scheme with the BF weights sends tool to the downlink data of SU or MU
Body, including：When being sent to single user, determine to need in base station to SU send N number of stream when, before base station is taken in the BF matrixes of SU
N row weight transmission to the data of each stream as the corresponding BF values of N number of stream using BF values corresponding with the stream；When to multi-purpose
When family is sent, base station takes each row in the BF matrixes of MU to be followed successively by the transmitting BF weighing vectors that each user respectively flows, each to each user
The transmitting BF weighing vectors weighting that stream is respectively flowed using each user is sent.
The third aspect, there is provided a kind of beam forming dispensing device based on weighting detectable signal, described device include：Processing
Unit, during for determining to need to send detection reference signal SRS using beam forming BF weighting schemes, according to descending channel information
Calculate BF weighing vectors or matrix that SRS is sent；Transmit-Receive Unit, adds for being sent to base station with the BF weighing vectors or matrix
Weigh SRS.
Fourth aspect, there is provided a kind of beam forming device based on weighting detectable signal, described device include：Transmitting-receiving is single
Member, the detection reference signal SRS for using beam forming BF weighting schemes to send for receiving user equipment, believes according to the SRS
Estimate in road；Processing unit, English calculate the BF weights of the single user SU or multi-user MU of downlink transmission according to channel estimation results；
The Transmit-Receive Unit, is additionally operable to weight transmission to the downlink data of SU or MU with the BF weights.
The technical solution that the application provides sends SRS by BF weighting matrixs or vector so that the channel coverage distance of SRS
Increase, improves precision of channel estimation.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the embodiment of the present application, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are some embodiments of the present application, for this area
For those of ordinary skill, without creative efforts, other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is the schematic network structure of mobile communication.
Fig. 2 is the flow signal for the beam forming sending method based on weighting detectable signal that one embodiment of the application provides
Figure.
Fig. 3 is that the flow for the beam forming sending method based on weighting detectable signal that another embodiment of the application provides is shown
It is intended to.
Fig. 4 is that the flow for the beam forming sending method based on weighting detectable signal that the another embodiment of the application provides is shown
It is intended to.
Fig. 5 is a kind of structure diagram for beam forming dispensing device based on weighting detectable signal that the application provides.
Fig. 6 is a kind of structure diagram for beam forming device based on weighting detectable signal that the application provides.
Fig. 7 is a kind of hardware architecture diagram for base station that the application provides.
Fig. 8 is the hardware architecture diagram of the UE that the application provides or CPE.
"/" in attached drawing represent or implication.
Embodiment
Refering to Fig. 1, Fig. 1 can be the schematic network structure of the single subdistrict of higher-frequency in radio honeycomb communication system,
As shown in Figure 1, the quantity of UE, exemplified by 1, which includes：ENB and UE/CPE, UE/CPE in each embodiment of the application
In higher-frequency cell SRS is sent to eNB in a manner of BF is weighted.
As shown in Fig. 2, a kind of beam forming based on weighting detectable signal that Fig. 2, which is one embodiment of the application, to be provided is sent
Method, method as shown in Figure 2 realize in network structure as shown in Figure 1, user equipment as shown in Figure 1, according to difference
Realize scene, can be that UE can also be CPE.This method is as shown in Fig. 2, include the following steps：
Step S201, eNB sends Physical Downlink Control Channel (English to UE/CPE：Physical downlink
Control channel, PDCCH) or semi-static signaling (such as wireless heterogeneous networks (Radio Resource Control,
RRC)), the PDCCH or semi-static signalings carry the instruction that UE/CPE sends SRS using BF weighting schemes.
UE/CPE in above-mentioned steps S201 using BF weighting schemes send SRS instruction be specifically as follows one it is special
Numeric string, such as 10 1 or 10 zero, certainly in practical applications, 1 in PDCCH or semi-static signalings can also be used
Bit carry the value of the instruction, for example, when value is 1 as indicated, represent that UE/CPE sends SRS using BF weighting schemes, such as
When the value of instruction is 0, represent that UE/CPE does not use BF weighting schemes to send SRS.
The trigger condition of eNB to the above-mentioned instruction of UE/CPE transmissions can be any in following conditions in above-mentioned steps S201
Kind：
Reference Signal Received Power (the English that condition A, base station can be measured according to omnidirectional SRS or uplink DMRS：
Reference Signal Receiving Power, RSRP) etc. measurement amount whether be less than first threshold to determine whether triggering
Above-mentioned instruction is sent to UE/CPE, for example, as the omnidirectional SRS or uplink DMRS RSRP measured are less than first threshold, it is determined that
Trigger to UE/CPE and send above-mentioned instruction.
Condition B, base station can be according to the channel quality instruction (English that UE/CPE is fed back：channel quanlity
Indicator, CQI) whether information less than second threshold determine whether that triggering sends above-mentioned instruction to UE/UE/CPE；For example, such as
CQI information is less than the second threshold, it is determined that triggers to UE/UE/CPE and sends above-mentioned instruction.
Whether condition C, base station less than the 3rd threshold value can determine whether triggering to UE/ according to the MCS information of uplink PUSCH
UE/CPE sends above-mentioned instruction.For example, as MCS information is less than the 3rd threshold value, it is determined that trigger above-mentioned to UE/UE/CPE transmissions
Instruction.
Optionally, above-mentioned PDCCH or semi-static signalings can also carry instruction UE/CPE and send SRS using BF weighting schemes
Port (port) mark.
Step S202, UE/CPE according to descending channel information calculate SRS send BF weighing vectors or matrix, UE/CPE to
ENB sends weighting detection reference signal with BF weighing vectors or matrix-style and sends SRS.
The specific side of the BF weighing vectors that SRS transmissions are calculated according to descending channel information or matrix in above-mentioned steps S202
Formula can include：
UE/CPE can be according to the cell-level reference signal (English of descending channel information：Cell-specific
Reference Signal, CRS) or channel state information reference signals (English：Channel State Information
Reference Signal, CSI-RS) estimation down channel Hd, and decompose to obtain the BF weights for sending SRS by SVD, specifically
Ground,
Wherein, U HdLeft singular matrix, V HdRight singular matrix, λ HdSingular value, wherein, F=U*, its
In, F can be the BF weights of SRS, due to Hd, V, Λ be given value, the BF weights of SRS can be calculated.
It should be noted that A in formulaTThe transposed matrix of representing matrix A, AHThe associate matrix of matrix A, A*Matrix A
Conjugate matrices, wherein A can be any one in U, V, S.
Step S203, eNB does channel estimation according to the SRS of weighting, and calculates what downlink was sent according to channel estimation results
Single user (English：Single-user, SU) or multi-user's (English：Multiuser, MU) BF weights, with the BF weights to SU
Or the downlink data weighting of MU is sent.
Hu,eff=HuF=V*ST(U*)HU*=V*STFormula (2)
Wherein, Hd,effChannel estimation value for eNB to single user, the BF matrixes of the SU are specifically as follows:To Hd,effRow
The matrix obtained after vectorial conjugate transposition and normalized is the BF matrixes of SU.Determine to need to send N number of stream to SU in eNB
When, take preceding N in the BF matrixes of SU to arrange as the corresponding BF values of the N number of stream, the data of each stream are used corresponding with the stream
The weighting of BF values is sent.
For MU, the corresponding H of each UE/CPE are calculated by formula (2) and formula (3)d,eff, then by each UE/
The corresponding H of CPEd,effRow vector conjugate transposition and normalized after the obtained BF matrixes of each UE/CPE, will each use
The BF matrixes of family equipment extract Li column vector of the user and are stitched together to obtain splicing matrix, and the Li launches for i-th of user
Data fluxion, the rectangular projection processing of other all row, which obtains the BF matrixes of MU, to be accomplished to each row of the splicing matrix
UE/CPE.When eNB determines to need to send data to MU, base station takes each row in the BF matrixes of MU to be followed successively by what each user respectively flowed
Launch BF weighing vectors, the transmitting BF weighing vectors weighting respectively flowed using each user is respectively flowed to each user and is sent.
The method of the embodiment of the present application, UE send SRS with BF weighting schemes, can lift SRS precision of channel estimation and SRS
Coverage distance, because the SRS signal has energy transmission on each antenna after SRS weightings, so that each antenna letter
Number merge effect it is more preferable, coverage distance is big, and power is more concentrated, and the received SRS signal better quality in base station, does channel with this and estimate
Meter, can effectively improve the precision of channel estimation.The base station of the embodiment of the present application utilizes the SU/ for the channel estimation for weighting SRS
MU BF weight calculation methods, it is not necessary to which the matrix decomposition of base station transmission antenna dimension, complexity is very low, makes massive
BF engineering under MIMO is feasible.
Refering to Fig. 3, Fig. 3 is that a kind of beam forming based on weighting detectable signal that another embodiment of the application provides is sent
Method, method as shown in Figure 3 realize that this method is as shown in figure 3, include the following steps in network structure as shown in Figure 1：
Step S301, UE/CPE sends SRS using PDCCH dynamics or by the way of being semi-statically configured by BF weightings.
The trigger condition configured in above-mentioned steps S301 can be：
UE/CPE can decide whether transmission BF according to whether the CRS RSRP measured or the measurement such as CQI are less than the 4th threshold value
The SRS of weighting.
Step S302, UE/CPE sends dynamic to base station or semi-static signaling, the signaling are carried UE/CPE and added using BF
Power mode sends the instruction of SRS.
Step S303, UE/CPE according to descending channel information calculate SRS send BF weighing vectors or matrix, UE/CPE to
ENB sends detection reference signal using BF weighing vectors or matrix weights and sends SRS.
The implementation of above-mentioned steps S303 may refer to the description of step S202, not repeat here.
Step S304, eNB does channel estimation according to the SRS of weighting, and calculates what downlink was sent according to channel estimation results
The BF weights of SU or MU, are weighted with the downlink data to SU or MU of the BF weights and sent.
The implementation of above-mentioned steps S304 may refer to the description of step S203, not repeat here.
The method of the embodiment of the present application, UE send SRS with BF weighting schemes, can lift SRS precision of channel estimation and SRS
Coverage distance, because the SRS signal has energy transmission on each antenna after SRS weightings, so that each antenna letter
Number merge effect it is more preferable, coverage distance is big, and power is more concentrated, and the received SRS signal better quality in base station, does channel with this and estimate
Meter, can effectively improve the precision of channel estimation.The base station of the embodiment of the present application utilizes the SU/ for the channel estimation for weighting SRS
MU BF weight calculation methods, it is not necessary to which the matrix decomposition of base station transmission antenna dimension, complexity is very low, makes massive
BF engineering under MIMO is feasible.
Refering to Fig. 4, Fig. 4 is that a kind of beam forming based on weighting detectable signal that the another embodiment of the application provides is sent
Method, method as shown in Figure 4 realize that this method is as shown in figure 4, include the following steps in network structure as shown in Figure 1：
Step S401, whether have in the static configuration of UE/CPE detections storage and send matching somebody with somebody for SRS by the way of BF weightings
Confidence ceases.
Step S402, have in the static configuration such as stored and SRS is sent by the way of BF weightings, UE/CPE is sent to base station
PDCCH dynamics or semi-static signaling, the signaling carry the instruction that UE/CPE sends SRS using BF weighting schemes.
Step S403, UE/CPE according to descending channel information calculate SRS send BF weighing vectors or matrix, UE/CPE to
ENB sends SRS using BF weighing vectors or matrix weights.
The implementation of above-mentioned steps S403 may refer to the description of step S202, not repeat here.
Step S404, eNB does channel estimation according to the SRS of weighting, and calculates what downlink was sent according to channel estimation results
The BF weights of SU or MU, send the downlink data of SU or MU with the weighting scheme of the BF weights.
The implementation of above-mentioned steps S404 may refer to the description of step S203, not repeat here.
The method of the embodiment of the present application, UE send SRS with BF weighting schemes, can lift SRS precision of channel estimation and SRS
Coverage distance, because the SRS signal has energy transmission on each antenna after SRS weightings, so that each antenna letter
Number merge effect it is more preferable, coverage distance is big, and power is more concentrated, and the received SRS signal better quality in base station, does channel with this and estimate
Meter, can effectively improve the precision of channel estimation.The base station of the embodiment of the present application utilizes the SU/ for the channel estimation for weighting SRS
MU BF weight calculation methods, it is not necessary to which the matrix decomposition of base station transmission antenna dimension, complexity is very low, makes massive
BF engineering under MIMO is feasible.
Refering to Fig. 5, Fig. 5 is a kind of beam forming dispensing device 50 based on weighting detectable signal, and described device includes：
Processing unit 501, during for determining to need to send detection reference signal SRS using beam forming BF weighting schemes,
The BF weighing vectors or matrix of SRS transmissions are calculated according to descending channel information；
Transmit-Receive Unit 502, for sending weighting SRS with the BF weighing vectors or matrix to base station.
Optionally, 501 is specific, is used for：
F=U*, U is the left singular matrix of Hd, and V is the right singular matrix of Hd, and λ is the singular value of Hd, wherein, F is SRS's
BF weights, U*For the conjugate matrices of U, VHThe associate matrix of matrix V.
Optionally, Transmit-Receive Unit 502 is specific, is used for：Receive Physical Downlink Control Channel or the semi-static finger that base station is sent
Order, as carried user equipment in the Physical Downlink Control Channel or semi-static instruction using BF weighting schemes transmission SRS
During instruction, user equipment determines to need to send detection reference signal using beam forming BF weighting schemes.
Optionally, Transmit-Receive Unit 502 is specific, is used for：RSRP or CQI is measured according to CRS, as RSRP or CQI is less than setting
Threshold value, it is determined that need to send SRS using BF weighting schemes.
Optionally, Transmit-Receive Unit 502 is specific, is used for：Whether have in the static configuration of user equipment detection storage using BF
The mode of weighting sends the configuration information of SRS, as having in the static configuration send SRS by the way of BF weightings to match somebody with somebody confidence
Breath, user equipment confirm to need to send SRS using beam forming BF weighting schemes.
Refering to Fig. 6, Fig. 6 is a kind of beam forming device 600 based on weighting detectable signal, and described device includes：
Transmit-Receive Unit 601, the detection reference signal for using beam forming BF weighting schemes to send for receiving user equipment
SRS,
Processing unit 602, for according to the SRS channel estimations, the list that downlink sends is calculated according to channel estimation results
The BF weights of user SU or multi-user MU；
Transmit-Receive Unit 601, is additionally operable to weight transmission to the downlink data of SU or MU with the BF weights.
The Transmit-Receive Unit 601 or processing unit 602 can be also used for performing the refinement scheme of embodiment as indicated at 4, this
In do not repeating.
Refering to Fig. 7, Fig. 7 be the application provide a kind of base station 70, the base station 70 as shown in figure 4, including：Wrap the base station 70
Include processor 701, memory 702, wireless transceiver 703 and bus 704.Wireless transceiver 703 is used between external equipment
Transceiving data.The quantity of processor 701 in base station 70 can be one or more.In some embodiments of the present application, processing
Device 701, memory 702 can be connected with wireless transceiver 703 by bus or other modes.Base station 70 can be used for performing Fig. 4
Shown method.The implication for the term being related on the present embodiment and citing, may be referred to the corresponding embodiments of Fig. 4.Herein
Repeat no more.
Wireless transceiver 703, for receiving user equipment using the detection that beam forming BF weighting schemes are sent with reference to letter
Number SRS,
Wherein, store program codes in memory 702.Processor 701 is used to call the program generation stored in memory 702
Code, for performing following operation：
Processor 701, for according to the SRS channel estimations, the alone of downlink transmission to be calculated according to channel estimation results
The BF weights of family SU or multi-user MU,
Wireless transceiver 703, sends for being weighted with the BF weights to the downlink data of SU or MU.
The technique effect of above-mentioned UE or CPE80 may refer to the description of the application embodiment as shown in Figure 4, no longer superfluous here
State.
Optionally, the method that processor 701 and wireless transceiver 703 perform Fig. 4.
Refering to Fig. 8, Fig. 8 is a kind of UE or CPE80 that the application provides, the UE or CPE80 as shown in Figure 1, including：The UE
Or CPE80 includes processor 801, memory 802, wireless transceiver 803 and bus 804.Wireless transceiver 803 is used for and outside
Transceiving data between equipment.The quantity of processor 801 in UE or CPE80 can be one or more.Some realities of the application
Apply in example, processor 801, memory 802 can be connected with wireless transceiver 803 by bus or other modes.UE or CPE80 can
For performing the method shown in Fig. 1.The implication for the term being related on the present embodiment and citing, may be referred to Fig. 1 correspondences
Embodiment.Details are not described herein again.
Wireless transceiver 803, for receiving user equipment using the detection that beam forming BF weighting schemes are sent with reference to letter
Number SRS,
Wherein, store program codes in memory 802.Processor 801 is used to call the program generation stored in memory 702
Code, for performing following operation：
Processor 801, for according to the SRS channel estimations, the alone of downlink transmission to be calculated according to channel estimation results
The BF weights of family SU or multi-user MU,
Wireless transceiver 803, sends for being weighted with the BF weights to the downlink data of SU or MU.
The technique effect of above-mentioned UE or CPE80 may refer to the description of the application embodiment as shown in Figure 1, no longer superfluous here
State.
Optionally, the method that processor 801 and wireless transceiver 803 perform Fig. 1.
It should be noted that in communication system, exemplarily, for virtual machine, UE or CPE80 can be servers
Or the equipment such as computer.
It should be noted that processor here can be the system of a treatment element or multiple treatment elements
Claim.For example, the treatment element can be central processing unit (Central Processing Unit, CPU) or specific
Integrated circuit (Application Specific Integrated Circuit, ASIC), or be arranged to implement this Shen
Please embodiment one or more integrated circuits, such as：One or more microprocessors (digital signal
Processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array,
FPGA)。
Memory can be the general designation of a storage device or multiple memory elements, and executable for storing
Parameter, data etc. required for program code or the operation of application program running gear.And memory can include random access memory
(RAM), nonvolatile memory (non-volatile memory), such as magnetic disk storage, flash memory can also be included
(Flash) etc..
Bus can be industry standard architecture (Industry Standard Architecture, ISA) bus, outer
Portion's apparatus interconnection (Peripheral Component, PCI) bus or extended industry-standard architecture (Extended
Industry Standard Architecture, EISA) bus etc..The bus can be divided into address bus, data/address bus, control
Bus processed etc..For ease of representing, only represented in Fig. 7 or Fig. 8 with a thick line, it is not intended that an only bus or a species
The bus of type.
The base station, UE or CPE80 can also include input/output unit, bus is connected to, to pass through bus and processor
Connected etc. other parts.The input/output unit can provide an inputting interface for operating personnel, so that operating personnel pass through this
Inputting interface selects item of deploying to ensure effective monitoring and control of illegal activities, and can also be other interfaces, can pass through the external miscellaneous equipment of the interface.
It should be noted that for foregoing each embodiment of the method, in order to be briefly described, therefore it is all expressed as to a system
The combination of actions of row, but those skilled in the art should know, the application and from the limitation of described sequence of movement, because
For according to the application, certain some step can use other orders or be carried out at the same time.Secondly, those skilled in the art also should
Know, embodiment described in this description belongs to preferred embodiment, involved action and module not necessarily this Shen
Please be necessary.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and is not described in some embodiment
Part, may refer to the associated description of other embodiment.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is can
To instruct relevant hardware to complete by program, which can be stored in a computer-readable recording medium, storage
Medium can include：Flash disk, read-only storage (English：Read-Only Memory, referred to as：ROM), random access device (English
Text：Random Access Memory, referred to as：RAM), disk or CD etc..
The content download method and relevant device that are there is provided above the embodiment of the present application, system are described in detail,
Specific case used herein is set forth the principle and embodiment of the application, and the explanation of above example is simply used
Understand the present processes and its core concept in help；Meanwhile for those of ordinary skill in the art, according to the application's
Thought, there will be changes in specific embodiments and applications, in conclusion this specification content should not be construed as
Limitation to the application.
Claims (16)
1. a kind of beam forming sending method based on weighting detectable signal, it is characterised in that described method includes following steps：
When user equipment determines to need to send detection reference signal SRS using beam forming BF weighting schemes, user equipment according to
Descending channel information calculates the BF weighing vectors or matrix that SRS is sent；
User equipment sends weighting SRS to base station with the BF weighing vectors or matrix.
2. the according to the method described in claim 1, it is characterized in that, BF that SRS transmissions are calculated according to descending channel information
Weighing vector or matrix are specific, including：
F=U*, U is the left singular matrix of Hd, and V is the right singular matrix of Hd, and λ is the singular value of Hd, wherein, the BF that F is SRS is weighed
Value, U*For the conjugate matrices of U, VHThe associate matrix of matrix V.
3. method according to claim 1 or 2, it is characterised in that the user equipment to base station with the BF weight to
Amount or matrix transmission weighting SRS are specific, including：
User equipment receives Physical Downlink Control Channel or the semi-static instruction that base station is sent, such as Physical Downlink Control Channel
Or carried in semi-static instruction user equipment using BF weighting schemes send SRS instruction when, user equipment determines that needs are adopted
Detection reference signal is sent with beam forming BF weighting schemes.
4. method according to claim 1 or 2, it is characterised in that the user equipment to base station with the BF weight to
Amount or matrix transmission weighting SRS are specific, including：
User equipment receives power RSRP or channel quality indicator (CQI) according to cell-level reference signal CRS measuring reference signals, such as
RSRP or CQI is less than given threshold, it is determined that needs to send SRS using BF weighting schemes.
5. method according to claim 1 or 2, it is characterised in that the user equipment to base station with the BF weight to
Amount or matrix transmission weighting SRS are specific, including：
Whether the configuration information that using BF weighting by the way of sends SRS is had in the static configuration of user equipment detection storage, such as institute
The configuration information for having in static configuration and SRS being sent by the way of BF weightings is stated, user equipment confirms to need to use beam forming
BF weighting schemes send SRS.
6. a kind of beam forming method based on weighting detectable signal, it is characterised in that described method includes following steps：
Base station receives the detection reference signal SRS that user equipment uses beam forming BF weighting schemes to send, and is believed according to the SRS
Estimate in road；
Base station calculates the BF weights of the single user SU or multi-user MU of downlink transmission according to channel estimation results, with the BF weights pair
The downlink data weighting of SU or MU is sent.
7. according to the method described in claim 6, it is characterized in that, the base station calculates downlink transmission according to channel estimation results
Single user SU or the BF weights of multi-user MU include：
Hu,eff=HuF=V*ST(U*)H U*=V*STFormula 2
Wherein, Hd,effChannel estimation value for eNB to single user,
In SU, to Hd,effRow vector conjugate transposition and normalized after obtained matrix be SU BF matrixes；In MU
When, the corresponding H of each user equipment is calculated by formula 2 and formula 3d,eff, then by the corresponding H of each user equipmentd,eff's
The BF matrixes of each user equipment obtained after row vector conjugate transposition and normalized, by the BF matrixes of each user equipment
Extract Li column vector of the user to be stitched together to obtain splicing matrix, the Li is the data fluxion of i-th of user's transmitting, to institute
Each row for stating splicing matrix accomplish that the rectangular projection processing of other all row obtains the BF matrixes of MU.
8. the method according to the description of claim 7 is characterized in that the weighting scheme with the BF weights is under SU or MU
Row data sending is specific, including：
When being sent to single user, when determining to need to the SU N number of streams of transmission in base station, base station takes the preceding N in the BF matrixes of SU to arrange
As the corresponding BF values of N number of stream, transmission is weighted using BF values corresponding with the stream to the data of each stream；
When to multiuser transmission, base station take each row in the BF matrixes of MU be followed successively by the transmitting BF that each user respectively flows weight to
Amount, is respectively flowed each user the transmitting BF weighing vectors weighting respectively flowed using each user and sent.
9. a kind of beam forming dispensing device based on weighting detectable signal, it is characterised in that described device includes：
Processing unit, during for determining to need to send detection reference signal SRS using beam forming BF weighting schemes, according to downlink
Channel information calculates the BF weighing vectors or matrix that SRS is sent；
Transmit-Receive Unit, for sending weighting SRS with the BF weighing vectors or matrix to base station.
10. device according to claim 9, it is characterised in that the processing unit is specific, is used for：
F=U*, U HdLeft singular matrix, V HdRight singular matrix, λ HdSingular value, wherein, F be SRS BF weigh
Value, U*For the conjugate matrices of U, VHThe associate matrix of matrix V.
11. the device according to claim 9 or 10, it is characterised in that the Transmit-Receive Unit is specific, is used for：Receive base station
The Physical Downlink Control Channel of transmission or semi-static instruction, as carried in the Physical Downlink Control Channel or semi-static instruction
When user equipment sends the instruction of SRS using BF weighting schemes, user equipment determines to need to use beam forming BF weighting schemes
Send detection reference signal.
12. the device according to claim 9 or 10, it is characterised in that the Transmit-Receive Unit is specific, is used for：Surveyed according to CRS
RSRP or CQI is measured, as RSRP or CQI is less than given threshold, it is determined that need to send SRS using BF weighting schemes.
13. the device according to claim 9 or 10, it is characterised in that the Transmit-Receive Unit is specific, is used for：User equipment
The configuration information for whether having in the static configuration of storage and SRS being sent by the way of BF weightings is detected, as in the static configuration
There is the configuration information that SRS is sent by the way of BF weightings, user equipment confirms to need to send out using beam forming BF weighting schemes
Send SRS.
14. a kind of beam forming device based on weighting detectable signal, it is characterised in that described device includes：
Transmit-Receive Unit, the detection reference signal SRS for using beam forming BF weighting schemes to send for receiving user equipment, according to
The SRS channel estimations；
Processing unit, English calculate the BF weights of the single user SU or multi-user MU of downlink transmission according to channel estimation results；
The Transmit-Receive Unit, is additionally operable to weight transmission to the downlink data of SU or MU with the BF weights.
15. device according to claim 14, it is characterised in that the processing unit is specific, is used for
Hu,eff=HuF=V*ST(U*)H U*=V*STFormula 2
Wherein, Hd,effChannel estimation value for eNB to single user,
In SU, to Hd,effRow vector conjugate transposition and normalized after obtained matrix be SU BF matrixes；In MU
When, the corresponding H of each user equipment is calculated by formula 2 and formula 3d,eff, then by the corresponding H of each user equipmentd,eff's
The BF matrixes of each user equipment obtained after row vector conjugate transposition and normalized, by the BF matrixes of each user equipment
Extract Li column vector of the user to be stitched together to obtain splicing matrix, the Li is the data fluxion of i-th of user's transmitting, to institute
Each row for stating splicing matrix accomplish that the rectangular projection processing of other all row obtains the BF matrixes of MU.
16. device according to claim 14, it is characterised in that the Transmit-Receive Unit is specific, is used for：
When being sent to single user, when determining to need to the SU N number of streams of transmission in base station, base station takes the preceding N in the BF matrixes of SU to arrange
As the corresponding BF values of N number of stream, transmission is weighted using BF values corresponding with the stream to the data of each stream；
When to multiuser transmission, base station take each row in the BF matrixes of MU be followed successively by the transmitting BF that each user respectively flows weight to
Amount, is respectively flowed each user the transmitting BF weighing vectors weighting respectively flowed using each user and sent.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610945225.3A CN107994932A (en) | 2016-10-26 | 2016-10-26 | A kind of beam forming sending method and device based on weighting detectable signal |
| PCT/CN2017/107079 WO2018077119A1 (en) | 2016-10-26 | 2017-10-20 | Weighted sounding signal-based method and device for beamforming transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610945225.3A CN107994932A (en) | 2016-10-26 | 2016-10-26 | A kind of beam forming sending method and device based on weighting detectable signal |
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| CN112272151A (en) * | 2020-10-28 | 2021-01-26 | 中国联合网络通信集团有限公司 | Channel estimation method and device |
| WO2022147709A1 (en) * | 2021-01-07 | 2022-07-14 | 华为技术有限公司 | Communication method and apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114884633B (en) * | 2021-02-05 | 2023-11-10 | 大唐移动通信设备有限公司 | Downlink scheduling processing method, network equipment and storage medium |
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| WO2018077119A1 (en) | 2018-05-03 |
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