CN106412942A - Sending method of beamformed reference signals, beam selection method, base station, and user equipment - Google Patents
Sending method of beamformed reference signals, beam selection method, base station, and user equipment Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
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- H—ELECTRICITY
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- 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
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Abstract
The invention provides a sending method of beamformed reference signals (BRS), a beam selection method, and a base station and user equipment (UE) for executing the methods. The sending method of the BRS includes steps: pre-storing a corresponding relation between BRS information and beam indexes; for each candidate beam, generating the BRS signal corresponding to the candidate beam according to beam information of the candidate beam and the BRS information corresponding to the beam index of the candidate beam; and sending the BRS signal corresponding to each candidate beam to the user equipment UE. According to the above scheme, the base station can send the BRS bearing the beam indexes to the UE, and the UE can perform beam selection.
Description
Technical field
The present invention relates to wireless communication technology, particularly to beam reference signal (Beamformed
Reference Signal, BRS) sending method, beam selection method, base station and user terminal (User
Equipment, UE).
Background technology
Currently, enter scale commercial stage with forth generation mobile communication (4G), the 5th following generation moves
Dynamic communication (5G) has become the focus of global development.
Extensive multiple-input and multiple-output (Massive MIMO) technology have become as the key technology of 5G with
One of and study hotspot.At present, MIMO technology have been widely used for long evolving system (LTE),
The every field such as Wireless Fidelity (Wireless-Fidelity, WIFI).In theory, antenna is more, system
Spectrum efficiency and transmission reliability higher.What MIMO technology can be expensive by some on a large scale
The antenna module of low-power consumption, to realize, is to carry out mobile communication on high band to provide wide prospect,
It can lift wireless frequency spectrum efficiency at double, strengthens the network coverage and power system capacity, helps operator maximum
Limit is using existing site and frequency spectrum resource.Additionally, the introducing of active antenna system (AAS) is on the one hand
Enable the spatial characteristics of base station control signal in three dimensions, on the other hand will support aerial array
To two-dimensional directional development, promote the development of extensive MIMO technology, systematic function is substantially improved.In reality
Border application in, particularly in high-frequency band, in conjunction with AAS and extensive MIMO technology base station in ripple
The more and narrower wave beam of width can be produced, such that it is able to be greatly improved at target UE during bundle figuration
Signal Interference and Noise Ratio (SINR) and data throughout.
So, in the case of using extensive MIMO and AAS technology, how UE is from numerous times
Select and in wave beam, select the preferable wave beam of quality to have become as the key issue realizing that wave beam forming needs to solve.
Content of the invention
In order to solve the above problems, The embodiment provides beam reference signal (BRS) send out
Delivery method and beam selection method.
BRS sending method described in the embodiment of the present invention includes：Prestore BRS information and wave beam rope
The corresponding relation drawing；For each candidate beam, the beam information according to described candidate beam and with institute
The beam index corresponding BRS information stating candidate beam generates BRS letter corresponding with described candidate beam
Number；And respectively BRS signal corresponding with each candidate beam is sent to UE.
Wherein, BRS information includes：The position of the running time-frequency resource of basic sequence construction and transmission BRS information；
Described beam information is the corresponding relation of beam index and wave beam forming parameter.
Wherein, generate BRS signal corresponding with described candidate beam to include：Determine described candidate beam
Beam information；According to the corresponding relation of the BRS information prestoring and beam index, determine and described time
Select wave beam corresponding BRS information；Basic sequence is generated according to the basic sequence construction in the BRS information determining,
As reference signal corresponding with this candidate beam；According to the wave beam forming parameter in the beam information determining
Wave beam forming is carried out to described reference signal, obtains BRS sequence corresponding with candidate beam；And according to
The BRS obtaining sequence is entered by the position of the running time-frequency resource of transmission BRS signal in the BRS information determining
Row esource impact, obtains the BRS signal of corresponding described candidate beam.
Above-mentioned BRS information further includes：Cyclic shift (CS) value of basic sequence.
In the case, above-mentioned generation BRS signal corresponding with described candidate beam further includes：Logical
Cross the descending UE BRS information that signals and include CS operation and the parameter of CS operation；And
Before carrying out wave beam forming, phase place is carried out to the basic sequence generating according to the CS value in BRS information
Obtain reference signal corresponding with described candidate beam.
Beam selection method described in the embodiment of the present invention includes：Send BRS in the base station of system configuration
Running time-frequency resource position, from receive signal sequence extract each candidate beam corresponding BRS signal；
Each candidate beam corresponding BRS signal extracting is processed, obtains corresponding to each candidate beam
The mass parameter of BRS signal；According to corresponding to each candidate beam, the mass parameter of BRS signal is from being carried
N number of BRS signal is selected, wherein, N is natural number in the BRS signal sequence taking；Determine selected
The corresponding BRS information of N number of BRS signal；According to the BRS information being pre-configured with and beam index it
Between relation, determine the corresponding N number of beam index of above-mentioned selected N number of BRS signal；And will
The N number of beam index determining feeds back to base station.
The mass parameter of above-mentioned BRS signal is the channel quality information (CSI) of BRS signal；Above-mentioned right
Each candidate beam corresponding BRS signal extracting carries out processing inclusion：The BRS signal of extraction is entered
Row channel estimation, obtains the CSI of BRS signal；And described from the BRS signal sequence being extracted
N number of BRS signal is selected to include：From the BRS signal sequence being extracted, selecting range maximum is N number of
BRS signal.
The mass parameter of above-mentioned BRS signal is the Reference Signal Received Power (RSRP) of BRS signal；
Above-mentioned each candidate beam corresponding BRS signal to extraction carries out processing inclusion：The BRS that will extract
Signal carries out power measurement, obtains the RSRP of BRS signal；And described from the BRS signal being extracted
N number of BRS signal is selected to include in sequence：Select power maximum from the BRS signal sequence being extracted
N number of BRS signal.
Above-mentioned N number of beam index by determination feeds back to base station and includes：N number of beam index is encoded,
Obtain a binary sequence, then by way of wave beam bitmap, described binary sequence is fed back to base station.
Base station described in the embodiment of the present invention includes：
Dispensing unit, prestores beam information and BRS information and the beam index of each candidate beam
Corresponding relation；
BRS signal generation unit, for each candidate beam, for according to the wave beam with this candidate beam
Information and BRS information corresponding with the beam index of this candidate beam generation are corresponding with this candidate beam
BRS signal；And
BRS signal corresponding with each candidate beam is sent to user terminal UE by transmitting element respectively.
Above-mentioned BRS signal generation unit includes：
Information determination module, for determining the beam information of this candidate beam and according to prestoring
BRS information and the corresponding relation of beam index, determine BRS information corresponding with this candidate beam；
Basic sequence generation module, for generating motif according to the basic sequence construction in the BRS information determining
Row, as reference signal；
Wave beam forming module, for the wave beam forming parameter in the beam information according to determination to reference signal
Carry out wave beam forming, obtain this candidate beam corresponding BRS sequence；
Resource mapping module, for the time-frequency money according to the transmission BRS signal in the BRS information determining
The BRS sequence of generation is carried out esource impact by the position in source, obtain to should candidate beam BRS letter
Number.
Above-mentioned base station further includes：Notification unit, for signaling UE BRS letter by descending
Breath includes CS operation and the parameter of CS operation；
Above-mentioned BRS signal generation unit further includes：It is connected to basic sequence generation module and wave beam is assigned
Circular shift module between shape module, for carrying out phase according to the CS value in BRS information to basic sequence
Position rotation, obtains reference signal corresponding with this candidate beam.
UE described in the embodiment of the present invention includes：
Receiving unit, for sending the running time-frequency resource position of BRS signal in the base station of system configuration, from connecing
Each candidate beam corresponding BRS signal is extracted in the signal sequence received；
Signal quality detector unit, to each candidate beam corresponding BRS signal extracting
Reason, obtains the mass parameter of BRS signal corresponding to each candidate beam；
Beam selection unit, for BRS signal according to corresponding to each candidate beam mass parameter from institute
Select N number of BRS signal in the BRS signal sequence extracting, determine selected N number of BRS signal
Corresponding BRS information, and according to the relation between the BRS information being pre-configured with and beam index, really
The corresponding N number of beam index of fixed above-mentioned selected N number of BRS signal；And
Feedback unit, for feeding back to base station by the N number of beam index determining.
Selection by the transmission process of the beam reference signal of above-mentioned base station side and the wave beam of UE side
Journey, the beam reference signal being used for the index carrying each candidate beam can be sent to UE by base station.
Subsequently, UE can be selected according to the quality of each candidate beam, and the wave beam by selected wave beam
Index feeds back to base station.Thus base station can be realized effective wave beam forming, fill according to the selection of UE
Point quantity brought using AAS and extensive MIMO technology is many and the wave beam of good directionality, greatly
Width improves SINR and data throughout at UE.
Brief description
Fig. 1 is the sending method flow chart of the beam reference signal described in the embodiment of the present invention；
Fig. 2 is the method for the generation BRS signal corresponding with each candidate beam described in the embodiment of the present invention
Flow chart；
Fig. 3 is the beam selection method flow chart described in the embodiment of the present invention；
Fig. 4 is the internal structure schematic diagram of the base station described in the embodiment of the present invention；
Fig. 5 is the internal structure schematic diagram of the BRS signal generation unit described in the embodiment of the present invention；And
Fig. 6 is the internal structure schematic diagram of the UE described in the embodiment of the present invention.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing and
Embodiment, the present invention will be described in further detail.It should be appreciated that described herein be embodied as
Example, only in order to explain the present invention, is not intended to limit the present invention.
As it was previously stated, by with reference to AAS and extensive MIMO technology, base station is in wave beam forming
Wave beam more, that width is narrower can be produced.Due to these beam directional more preferably, can be significantly
Improve the SINR at UE, thus improving the data throughout of UE.And in order to help UE from numerous times
Select the selection preferable wave beam of quality in wave beam, complete effective wave beam forming, base station is held firstly the need of transmission
The beam reference signal carrying each wave beam relevant information, to UE, carries out beam selection for UE.For this reason, this
Inventive embodiment provides the sending method of beam reference signal.
First, it will be understood to those skilled in the art that in order to identify each candidate beam, system is every
Individual candidate beam is provided with an index, referred to as beam index (Beam Index).Wherein, wave beam rope
It is one-to-one for drawing with candidate beam.It will also be understood by those skilled in the art that one group of wave beam forming
Parameter can uniquely determine a wave beam, and therefore, also with one group of wave beam forming parameter of each candidate beam is
Correspondingly.Based on above-mentioned understanding, in an embodiment of the present invention, by the wave beam of a candidate beam
Corresponding relation between index and the wave beam forming parameter of this candidate beam is referred to as the wave beam letter of this candidate beam
Breath.In order to complete wave beam forming, each base station should be previously stored with the wave beam letter of each candidate beam
Breath.For example, it is possible to configure the beam information of candidate beam in advance in base station side in system initial configuration.
Additionally, as it was previously stated, in order to help UE to carry out beam selection, base station needs by each candidate
Wave beam is sent out some signals and is measured for it to UE and select.In order to realize this target, in the present invention
Embodiment in, the beam index of each candidate beam is particular by ripple corresponding with each candidate beam
Restraint reference signal (Beamformed Reference Signal, BRS) information to carry and to be sent to UE
's.Specifically, above-mentioned BRS information refers to that the content carrying and sending method have with BRS itself
The information closed, at least includes the construction of basic sequence of BRS itself carrying and is sending this BRS signal
When the shared position of running time-frequency resource etc..Further, in order to extend what BRS information can carry
The quantity of beam index, above-mentioned BRS information can also include the cyclic shift of itself carried basic sequence
(Cyclic Shift, CS) value.
In order to carry the beam index of each candidate beam, need pre-defined BRS information and beam index
Between one-to-one relationship, that is, ensure every kind of BRS information uniquely correspond to a beam index.In order to enter
Row beam selection, base station side and UE side all should prestore the right of above-mentioned BRS information and beam index
Should be related to.For base station side, relevant configuration can be carried out in system initial configuration.For UE side,
Relevant configuration can also be carried out in system initial configuration, or can also system start-up run after, by
The corresponding relation of BRS information and beam index is sent to UE by quasi-static signaling by base station.UE
Store this corresponding relation after receiving the corresponding relation that BRS information is with beam index.
The BRS information in varied situations that described in detail by way of example below is corresponding with beam index to close
System.
As it was previously stated, BRS information can include the construction of basic sequence of itself carrying, this basic sequence is entered
The CS value of row CS operation and the position of the running time-frequency resource shared when sending this BRS.So,
When setting up the corresponding relation of BRS information and beam index, different basic sequence, different CS value and
The combination of different running time-frequency resource positions will correspond respectively to different beam index.For example, it is assumed that currently making
Motif shows 2, and CS value has 4, and the different running time-frequency resource that can be used for transmitting BRS has 8
Individual, then can have 2 × 4 × 8=64 BRS information.This 64 BRS information corresponded respectively in
The beam index of 64 candidate beam.Assume that currently used basic sequence only has 1, but CS value has 4
Individual, the different running time-frequency resource that can be used for transmitting BRS has 8, then can have 4 × 8=32 BRS
Information.This 32 BRS information are corresponded respectively in the beam index of 32 candidate beam.
If BRS information only includes construction and the time-frequency shared when sending this BRS money of basic sequence
Source, and do not include basic sequence is carried out with the CS value of CS operation, namely CS operation is not carried out to basic sequence.
Then when setting up the corresponding relation of BRS information and beam information, different basic sequences and different time-frequency provide
The combination in source will correspond respectively to different beam index.For example, it is assumed that currently used motif shows 2
Individual, and there is no cyclic shift, the running time-frequency resource that can be used for transmitting BRS has 8.Then in this feelings
Only have 2 × 8=16 BRS information under condition, only can correspond respectively in the ripple of 16 candidate beam
Bundle index.
Can be seen that the beam index in order to carry different candidate beam from above-mentioned corresponding relation, correspond to not
BRS information with candidate beam is different.If that is, basic sequence construction is identical in BRS information
And CS operation not being carried out to basic sequence, then different candidate beam corresponding BRS sequences should be mapped to
On different running time-frequency resources (i.e. orthogonal running time-frequency resource).For example, in this case, if necessary
Carry 64 beam index, then need 64 orthogonal running time-frequency resources altogether.In this case, BRS
Expense be just directly proportional to the quantity of candidate beam.And in an embodiment of the present invention, due to BRS information
In also include the parameter such as the different configuration of basic sequence and/or the CS value to basic sequence, therefore the present invention's
In embodiment, using different basic sequences or identical motif can also be directed in addition to orthogonal running time-frequency resource
Row to send BRS sequence using different cyclic shifts.In this case, different BRS sequences can
To take identical running time-frequency resource, such that it is able to reach the purpose reducing BRS expense.For example, this
In the case of, if having 8 basic sequences can select, and selective CS value also has 8, then may be used
Only just can carry this corresponding BRS sequence of 64 candidate beam, BRS with 1 running time-frequency resource simultaneously
Expense will greatly reduce.Meanwhile, the parallel reception of BRS sequence can also be realized in UE side, effectively subtract
The time of few beam selection, reduce time delay.
Based on above-mentioned configuration, embodiments of the invention give the side that a kind of base station sends wave beam reference signal
Method, implements flow process as shown in figure 1, mainly comprising the steps：
Step 101, prestores the corresponding relation of BRS information and beam index.
Step 102, for each candidate beam, according to the beam information of this candidate beam and with this
The beam index corresponding BRS information of candidate beam generates BRS signal corresponding with this candidate beam.
BRS signal corresponding with each candidate beam is sent to UE by step 103 respectively.
The implementation method of above-mentioned steps 102 will be described further combined with accompanying drawing in detail below.Fig. 2 shows
The method of generation BRS signal corresponding with each candidate beam according to embodiments of the present invention.For each
Candidate beam, base station all will execute operation as shown in Figure 2.As shown in Fig. 2 the method mainly includes：
Step 1021, determines the beam information of this candidate beam.
As it was previously stated, beam information is specially the corresponding relation of beam index and wave beam forming parameter.
Step 1022, according to the corresponding relation of the BRS information prestoring and beam index, determine with
This candidate beam corresponding BRS information.
BRS information includes as previously mentioned：BRS itself carry the construction of basic sequence and send should
The position of shared running time-frequency resource during BRS.BRS information can also include carrying out CS behaviour to basic sequence
The CS value made.
If above-mentioned BRS information includes basic sequence is carried out with the CS value of CS operation, base station also needs to
CS operation is included by the descending UE BRS information that signals, that is, notifies UE in beam selection mistake
Need to detect further the CS operation of basic sequence in journey.Meanwhile, base station also needs to lead to by downlink signaling
Know the parameter of UE CS operation, the CS quantity of for example maximum CS quantity or reality, so that UE enters
Row CS detects.
Step 1023, generates basic sequence according to the basic sequence construction in the BRS information determining.
Specifically, in this step, if the basic sequence in the BRS of each candidate beam corresponding is all identical,
The basic sequence that then base station is directed to the generation of each candidate beam is all identical；If each candidate beam corresponding
Basic sequence in BRS is different from, then the basic sequence that base station is directed to the generation of each candidate beam is all different
's；If the motif in the BRS of each candidate beam corresponding shows identical also different, base station pin
The basic sequence that each candidate beam is generated is then partly identical and partly different.
Step 1024 however, it is determined that BRS information in comprise CS value, then according to this CS value to basic sequence
Carry out phase place and obtain reference signal corresponding with this candidate beam.If it is determined that BRS information in do not wrap
Value containing CS, then will without carrying out this step, step 1023 directly using basic sequence as with this candidate's ripple
Restraint corresponding reference signal.
Specifically, in this step if it is determined that BRS packet value containing CS, then according to should
CS value carries out phase place to the basic sequence generating.Specific mode of operation may be referred to equation below (1)：
Wherein, xkRepresent k-th sample value of the basic sequence of certain candidate beam；nsRepresent CS operation
CS value, i.e. the sample number of cyclic shift；N represents the FFT size of OFDM modulation.
Step 1025, carries out wave beam according to the wave beam forming parameter in the beam information determining to reference signal
Figuration, obtains this candidate beam corresponding BRS sequence.
Specifically, in this step, base station can by analog beam figuration, digital beam forming with
And the beamforming approach such as mixed-beam figuration carries out wave beam forming to reference signal.
Step 1026, the position according to the running time-frequency resource transmitting BRS signal in the BRS information determining will
Generate BRS sequence carry out esource impact, obtain to should candidate beam BRS signal.
It can thus be seen that passing through above-mentioned beam reference signaling method, base station can will carry wave beam
The beam reference signal of index is sent to UE by each wave beam, carries out beam selection for UE.
In an embodiment of the present invention, when carrying out the esource impact of BRS sequence, base station can adopt block
Shape mapping mode (continuous BRS) or pectination mapping mode (Comb-type BRS).Adopting pectination
During mapping mode, base station also needs to notify UE pectination interval (Comb Interval) by downlink signaling
And frequency offset (Frequency Offset), carry out the detection of BRS signal for UE.
Next in conjunction with Fig. 3, describe the method that UE side carries out beam selection in detail.
Fig. 3 shows the method that the UE described in the embodiment of the present invention carries out beam selection.As shown in figure 3,
The method mainly includes：
Step 301, UE sends the running time-frequency resource position of BRS signal in the base station of system configuration, from connecing
Each candidate beam corresponding BRS signal is extracted in the signal sequence received.
Because predetermined base station is sent the position of the running time-frequency resource of BRS signal by system in initial configuration
Put, and base station and UE can configure above- mentioned information.That is, which running time-frequency resource base station is known a priori by
Send the BRS signal of each candidate beam, UE is also known a priori by base station can be sent out on which running time-frequency resource
Give the BRS signal of each candidate beam.Therefore, in this step, UE can be from the signal sequence receiving
Each candidate beam corresponding BRS signal is extracted in row.
Step 302, UE is processed to each candidate beam corresponding BRS signal extracting, and obtains
The mass parameter of BRS signal corresponding to each candidate beam.
In this step, the mass parameter of above-mentioned BRS signal can be the channel status letter of BRS signal
Breath (Channel State Information, CSI) or the reference receiving power (Reference of BRS signal
Signal Receiving Power, RSRP).
Specifically, if the mass parameter of BRS signal is the CSI of BRS signal, in this step,
UE will carry out channel estimation according to the BRS signal extracting, thus obtaining the CSI of BRS signal；If
The mass parameter of BRS signal is the RSRP of BRS signal, then in this step, UE will be received
Power measurement, thus obtain the RSRP of BRS.
After UE extracts BRS sequence from receipt signal, due to UE, to be known a priori by base station available
The set of basic sequence, therefore, it can first pass through the motif that detection determines the reality carrying in this BRS sequence
Row.Next, the BRS extracting sequence can be first multiplied by the conjugation of fixed basic sequence by UE,
Then using Fast Fourier Transform Inverse (IFFT) by the BRS sequence transformation after processing to time domain, now
The time domain channel impulse response with the BRS sequence of different CS is separated from each other, thus, UE can
Once to obtain CSI or RSRP of multiple BRS sequences parallel.Detection process by above-mentioned BRS sequence
As can be seen that in an embodiment of the present invention, base station side is by basic sequence is introduced with CS operation, permissible
Realize parallel beam selection in UE side, thus when reaching reduction BRS expense and reducing beam selection
The purpose prolonged.
Step 303, the mass parameter of UE BRS signal according to corresponding to each candidate beam is from being extracted
BRS signal sequence in select N number of BRS signal.
In this step, above-mentioned N is natural number, is the candidate beam that the UE being pre-configured with can select
Quantity.In actual applications, the concrete numerical value of N can rule of thumb set.
Specifically, specifically, if the mass parameter of BRS signal is the CSI of BRS signal,
In this step, UE would choose from the maximum N number of BRS signal of amplitude；If the matter of BRS signal
Amount parameter is the RSRP of BRS signal, then in this step, UE would choose from prominent N
Individual BRS signal.
Step 304, UE determines the corresponding BRS information of selected N number of BRS signal.
UE after selecting N number of BRS signal by above-mentioned steps in process that signal is processed extremely
Following information can be obtained less：The basic sequence of BRS signaling bearer, CS operation is carried out to this basic sequence
CS value and send running time-frequency resource of this BRS signal etc..As it was previously stated, above- mentioned information is BRS signal
Corresponding BRS information.
Specifically, as it was previously stated, UE can be known a priori by base station can send on which running time-frequency resource respectively
The BRS signal of individual candidate beam, therefore, the time-frequency in the BRS information of each candidate beam corresponding provides
Source information, is confirmable for UE.Additionally, as it was previously stated, UE be known a priori by base station can use
The set of basic sequence and CS value set, therefore, UE can by detection receive BRS letter
Number can determine the actual corresponding basic sequence of this BRS signal and CS value, thus determining each respectively
BRS signal corresponding BRS information.
Step 305, UE, according to the relation between the BRS information being pre-configured with and beam index, determines
The corresponding N number of beam index of above-mentioned selected N number of BRS signal.
As it was previously stated, UE is previously stored with the corresponding relation of BRS information and beam index, therefore UE
After have selected N number of BRS signal and determining the corresponding BRS information of this N number of BRS signal, permissible
Determined and this N number of BRS with the corresponding relation of beam index by the BRS information of itself storage further
The corresponding beam index of information.
Step 306, the N number of beam index determining is fed back to base station by UE.
In this step, the N number of beam index determining can directly be given by UE by up signaling feedback
Base station.UE can also first encode to N number of beam index, obtain a binary sequence, then lead to
This binary sequence is fed back to base station by the mode crossing wave beam bitmap (bitmap).By bitmap's
Mode is fed back wave beam indexed mode and is advantageous in that, the expense of signaling is little.Particularly in the situation that N is larger
Under, the signaling consumption by the way of bitmap can reduce a lot.
After selected beam index is fed back to base station by UE, base station just can be fed back according to UE
Beam index determine the wave beam forming parameter of wave beam selected by UE.Then, sending number to this UE
According to when it is possible to the wave beam forming parameter of wave beam is to the data being sent to this UE according to selected by UE
Carrying out wave beam forming, forming the preferable wave beam of the selected signal quality of UE, thus effectively being counted
According to transmission.
The method of corresponding above-mentioned transmission wave beam reference signal, embodiments of the invention additionally provide a kind of base
Stand, its internal structure is as shown in figure 4, main include：
Dispensing unit 401, prestores beam information and BRS information and the wave beam of each candidate beam
The corresponding relation of index；
BRS signal generation unit 402, for each candidate beam, for basis and this candidate beam
Beam information and BRS information corresponding with the beam index of this candidate beam generate and this candidate beam
Corresponding BRS signal；And
BRS signal corresponding with each candidate beam is sent to UE by transmitting element 403 respectively.
Wherein, the internal structure of BRS signal generation unit 402 is as shown in figure 5, main include：
Information determination module 4021, for determining the beam information of this candidate beam and according to prestoring
BRS information and beam index corresponding relation, determine BRS information corresponding with this candidate beam；
Basic sequence generation module 4022, for generating according to the basic sequence construction in the BRS information determining
Basic sequence, as reference signal；
Wave beam forming module 4023, for the wave beam forming parameter in the beam information according to determination to reference
Signal carries out wave beam forming, obtains this candidate beam corresponding BRS sequence；
Resource mapping module 4024, for according to determine BRS information in transmission BRS signal when
The BRS sequence of generation is carried out esource impact by the position of frequency resource, obtain to should candidate beam BRS
Signal.
If BRS information includes basic sequence is carried out with the CS value of CS operation, above-mentioned base station also will be wrapped
Include notification unit, for CS operation and CS behaviour are included by the descending BRS information that signals
The parameter made, CS quantity of for example maximum CS quantity or reality etc., so that UE carries out CS detection.
And above-mentioned BRS signal generation unit 402 also will further comprise and is connected to basic sequence generation module
Circular shift module 4025 between 4022 and wave beam forming module 4023, for according to BRS information
In CS value phase place is carried out to basic sequence, obtain reference signal corresponding with this candidate beam.
The method of corresponding above-mentioned beam selection, embodiments of the invention additionally provide execution said method
UE, its internal structure is as shown in fig. 6, main include：
Receiving unit 601, for sending the running time-frequency resource position of BRS signal in the base station of system configuration,
Extract each candidate beam corresponding BRS signal from the signal sequence receiving.
Signal quality detector unit 602, for entering to each candidate beam corresponding BRS signal extracting
Row is processed, and obtains the mass parameter of BRS signal corresponding to each candidate beam.
The concrete methods of realizing of above-mentioned signal quality detector unit 602 may be referred to the tool of above-mentioned steps 302
Gymnastics is made, and will not be described here.
Beam selection unit 603, for the mass parameter of BRS signal according to corresponding to each candidate beam
Select N number of BRS signal from the BRS signal sequence being extracted, determine selected N number of BRS
Signal corresponding BRS information, and according to the relation between the BRS information being pre-configured with and beam index,
Determine the corresponding N number of beam index of above-mentioned selected N number of BRS signal.
The concrete methods of realizing of above-mentioned beam selection unit 603 refer to the concrete of above-mentioned steps 303～305
Operation, will not be described here.
Feedback unit 604, for feeding back to base station by the N number of beam index determining.
The concrete methods of realizing of above-mentioned feedback unit refer to above-mentioned steps 306, will not be described here.
After selected beam index is fed back to base station by UE, base station just can be fed back according to UE
Beam index determine the wave beam forming parameter of wave beam selected by UE.Then, sending number to this UE
According to when it is possible to the wave beam forming parameter of wave beam is to the data being sent to this UE according to selected by UE
Carrying out wave beam forming, forming the preferable wave beam of the selected signal quality of UE, thus effectively being counted
According to transmission.
As can be seen from the above scheme, by the transmission process of the beam reference signal of above-mentioned base station side and
The selection course of the wave beam of UE side, effective wave beam forming can be realized in base station, make full use of AAS with
And the quantity brought of extensive MIMO technology is many and the wave beam of good directionality, thus target is greatly improved
SINR at UE and data throughout.Meanwhile, embodiments of the invention are by using different motifs
Row, different CS value and different running time-frequency resource position etc. combine to extend the beam index that can carry
Quantity, by way of merely BRS signal being transmitted by orthogonal resource compared with, can substantially reduce
The expense of BRS, reduces the time delay of beam selection simultaneously, realizes quick wave beam forming.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement done etc., should be included in
Within the scope of protection of the invention.
Claims (13)
1. a kind of sending method of beam reference signal BRS is it is characterised in that include：
Prestore the corresponding relation of BRS information and beam index；
For each candidate beam, the beam information according to described candidate beam and with described candidate beam
Beam index corresponding BRS information generate BRS signal corresponding with described candidate beam；And
Respectively BRS signal corresponding with each candidate beam is sent to user terminal UE.
2. method according to claim 1 is it is characterised in that described BRS information includes：Base
The position of the running time-frequency resource of sequence structure and transmission BRS signal；And
Described beam information is the corresponding relation of beam index and wave beam forming parameter.
3. method according to claim 2 is it is characterised in that described generation and described candidate's ripple
Restraint corresponding BRS signal to include：
Determine the beam information of described candidate beam；
According to the corresponding relation of the BRS information prestoring and beam index, determine and described candidate beam
Corresponding BRS information；
Basic sequence is generated according to the basic sequence construction in the BRS information determining, as described candidate beam
Reference signal；
According to the wave beam forming parameter in the beam information determining, the reference signal of described candidate beam is entered
Row wave beam forming, obtains BRS sequence corresponding with described candidate beam；And
The position of the running time-frequency resource according to the transmission BRS signal in the BRS information determining will obtain
BRS sequence carries out esource impact, obtains BRS signal corresponding with described candidate beam.
4. method according to claim 2 is it is characterised in that described BRS information is wrapped further
Include：Cyclic shift CS value.
5. method according to claim 4 is it is characterised in that described generation and described candidate's ripple
Restraint corresponding BRS signal to further include：
CS operation and the parameter of CS operation are included by the descending UE BRS information that signals；
And
Before carrying out wave beam forming after generating basic sequence, according to the CS in the BRS information determining
Value carries out phase place to the basic sequence generating, and obtains reference signal corresponding with described candidate beam.
6. a kind of beam selection method is it is characterised in that include：
Send the running time-frequency resource position of wave beam reference signal BRS in the base station of system configuration, from the letter receiving
Each candidate beam corresponding BRS signal is extracted in number sequence；
Each candidate beam corresponding BRS signal extracting is processed, obtains each candidate beam institute
The mass parameter of corresponding BRS signal；
According to corresponding to each candidate beam, the mass parameter of BRS signal is from the BRS signal sequence extracted
N number of BRS signal is selected, wherein, N is natural number in row；
Determine the corresponding BRS information of selected N number of BRS signal；
According to the relation between the BRS information being pre-configured with and beam index, determine above-mentioned selected N
The corresponding N number of beam index of individual BRS signal；And
The N number of beam index determining is fed back to base station.
7. method according to claim 6 is it is characterised in that the quality of described BRS signal is joined
Number is the channel condition information CSI of BRS signal；
Described each candidate beam corresponding BRS signal to extraction carries out processing inclusion：By extract
BRS signal carries out channel estimation, obtains the CSI of BRS signal；And
Described N number of BRS signal is selected to include from the BRS signal sequence being extracted：From extracted
The maximum N number of BRS signal of selecting range in BRS signal sequence.
8. method according to claim 6 is it is characterised in that the quality of described BRS signal is joined
Number is the Reference Signal Received Power RSRP of BRS signal；
Described each candidate beam corresponding BRS signal to extraction carries out processing inclusion：By extract
BRS signal carries out power measurement, obtains the RSRP of BRS signal；And
Described N number of BRS signal is selected to include from the BRS signal sequence being extracted：From extracted
Prominent N number of BRS signal is selected in BRS signal sequence.
9. method according to claim 6 it is characterised in that described will determine N number of wave beam
Index feeds back to base station and includes：N number of beam index is encoded, obtains a binary sequence, then
By way of wave beam bitmap bitmap, described binary sequence is fed back to base station.
10. a kind of base station is it is characterised in that include：
Dispensing unit, prestores beam information and the beam reference signal BRS of each candidate beam
Information and the corresponding relation of beam index；
BRS signal generation unit, for each candidate beam, for according to the ripple with described candidate beam
Bundle information and BRS information corresponding with the beam index of described candidate beam generate and described candidate's ripple
Restraint corresponding BRS signal；And
BRS signal corresponding with each candidate beam is sent to user terminal UE by transmitting element respectively.
11. base stations according to claim 10 are it is characterised in that described BRS signal generation list
Unit includes：
Information determination module, for determining the beam information of described candidate beam and according to prestoring
BRS information and the corresponding relation of beam index, determine BRS information corresponding with described candidate beam；
Basic sequence generation module, for generating motif according to the basic sequence construction in the BRS information determining
Row, as reference signal corresponding with described candidate beam；
Wave beam forming module, for according to the wave beam forming parameter pair in the beam information determining and described time
Select the corresponding reference signal of wave beam to carry out wave beam forming, obtain BRS sequence corresponding with described candidate beam
Row；And
Resource mapping module, for the time-frequency money according to the transmission BRS signal in the BRS information determining
The BRS sequence of generation is carried out esource impact by the position in source, obtains the BRS of corresponding described candidate beam
Signal.
12. base stations according to claim 11 are it is characterised in that further include：Advice note
Unit, for including CS operation and the ginseng of CS operation by the descending UE BRS information that signals
Number；
Described BRS signal generation unit further includes：It is connected to basic sequence generation module and wave beam is assigned
Circular shift module between shape module, for entering to described basic sequence according to the CS value in BRS information
Line phase rotates, and obtains reference signal corresponding with described candidate beam.
A kind of 13. user terminal UE are it is characterised in that include：
Receiving unit, for sending the time-frequency money of wave beam reference signal BRS signal in the base station of system configuration
Source position, extracts each candidate beam corresponding BRS signal from the signal sequence receiving；
Signal quality detector unit, to each candidate beam corresponding BRS signal extracting
Reason, obtains the mass parameter of BRS signal corresponding to each candidate beam；
Beam selection unit, for BRS signal according to corresponding to each candidate beam mass parameter from institute
Select N number of BRS signal in the BRS signal sequence extracting, determine selected N number of BRS signal
Corresponding BRS information, and according to the relation between the BRS information being pre-configured with and beam index, really
The corresponding N number of beam index of fixed above-mentioned selected N number of BRS signal；And
Feedback unit, for feeding back to base station by the N number of beam index determining.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510462905.5A CN106412942A (en) | 2015-07-31 | 2015-07-31 | Sending method of beamformed reference signals, beam selection method, base station, and user equipment |
| PCT/CN2016/089766 WO2017020688A1 (en) | 2015-07-31 | 2016-07-12 | Sending method for beam reference signal, beam selection method, base station, and user equipment |
| CN201680040746.2A CN107925461B (en) | 2015-07-31 | 2016-07-12 | Sending method of beam reference signal, beam selection method, base station and user terminal |
| JP2018503757A JP6546692B2 (en) | 2015-07-31 | 2016-07-12 | Beam reference signal transmission method, beam selection method, base station, and user terminal |
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| CN201510462905.5A CN106412942A (en) | 2015-07-31 | 2015-07-31 | Sending method of beamformed reference signals, beam selection method, base station, and user equipment |
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Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4107494B2 (en) * | 2002-09-20 | 2008-06-25 | 三菱電機株式会社 | Wireless communication system |
| US20090318157A1 (en) * | 2006-07-24 | 2009-12-24 | Panasonic Corporation | Reception device, transmission device, and communication method |
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| CN103812546B (en) * | 2012-11-07 | 2017-08-25 | 华为技术有限公司 | A kind of reference signal mapping method based on aerial array, apparatus and system |
| WO2015029604A1 (en) * | 2013-09-02 | 2015-03-05 | ソニー株式会社 | Communication control apparatus, communication control method, and terminal apparatus |
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| CN104184561B (en) * | 2014-01-13 | 2019-04-30 | 中兴通讯股份有限公司 | Precoded pilot processing method, device, base station and terminal |
-
2015
- 2015-07-31 CN CN201510462905.5A patent/CN106412942A/en active Pending
-
2016
- 2016-07-12 CN CN201680040746.2A patent/CN107925461B/en active Active
- 2016-07-12 WO PCT/CN2016/089766 patent/WO2017020688A1/en active Application Filing
- 2016-07-12 JP JP2018503757A patent/JP6546692B2/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN107925461B (en) | 2020-12-18 |
| CN107925461A (en) | 2018-04-17 |
| JP2018527802A (en) | 2018-09-20 |
| WO2017020688A1 (en) | 2017-02-09 |
| JP6546692B2 (en) | 2019-07-17 |
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