CN104660311B

CN104660311B - A kind of beam form-endowing method, the method and device for determining initial beam index set

Info

Publication number: CN104660311B
Application number: CN201310589504.7A
Authority: CN
Inventors: 肖华华; 陈艺戬; 鲁照华
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2013-11-20
Filing date: 2013-11-20
Publication date: 2019-03-12
Anticipated expiration: 2033-11-20
Also published as: WO2014183707A1; CN104660311A

Abstract

The method and device that the present invention provides a kind of beam form-endowing method, determines initial beam index set, is related to wireless communication field.Wherein, beam form-endowing method, applied to the system for including at least a second class communication node, the beam form-endowing method includes: to send original wave beam；Receive the initial beam index set that the second class communication node is determined according to the original wave beam；Set, which is indexed, according to the initial beam determines the purpose wave beam being used to send data.Wave beam is selected by first kind communication node and the cooperation of the second class communication node, while reducing wave beam feedback quantity, the accuracy of selection wave beam is improved, improves the performance of wireless telecommunication system, increase the coverage area of system.

Description

A kind of beam form-endowing method, the method and device for determining initial beam index set

Technical field

The present invention relates to wireless communication field, in particular to a kind of beam form-endowing method determines initial beam index set Method and device.

Background technique

Wave beam forming is a kind of signal processing technology, for loudspeaker class antenna, as shown in Figure 1, each electromagnetic horn is formed The wave beam of one fixed-direction forms the wave beam of multiple directions by multiple electromagnetic horns to reach the requirement of covering, is sending Electromagnetic horn when data on the selection signal direction to be sent is sent, to achieve the purpose that directive sending data.It is right In array antenna system, the linear array as shown in Fig. 2 a, 2b is also possible to planar antenna array shown in Fig. 2 c, 2d.Wave beam Figuration is enabled data to by being weighted processing to antenna element by specified direction directive sending.Pass through wave beam forming Directional data send, the amount of making it possible to concentrates on useful direction, increases the signal-to-noise ratio of system, to improve covering for system Lid range.

Wave beam forming can be only adjusted on horizontal azimuth, and as shown in Figure 3a, it only distinguishes horizontal azimuth not The same movement station, and the same for horizontal azimuth, the different movement station of vertical pitch angle be it is undistinguishable, can also be only It is adjusted on vertical angle of pitch, as shown in Figure 3b, it can distinguish the different user of angle of pitch.Both wave beam formings are two Tie up wave beam forming.Certainly, wave beam can also while be adjusted in horizontal and vertical dimension again, form three-dimensional wave beam forming, such as Shown in Fig. 4, three-dimensional wave beam forming is a kind of wave beam forming of solid that is a kind of while considering horizontal azimuth and vertical pitch angle Technology, it can be adaptively adjusted level orientation angle and be adaptively adjusted vertical pitch angle, to can distinguish The receiving end of different orientations can also distinguish the receiving end of different pitch angles.

In existing beam selection method, has while sending a wave beam, such as in long evolving system (LTE:Long Term Evolution) in, agreement is Release8 version, and abbreviation R8 version, the wave beam forming that port 5 is realized, it passes through First kind communication node selects to send the wave beam of data.Have while sending two wave beams, such as long evolving system (LTE: Long Term Evolution) in, agreement is Release9 version, abbreviation R9 version, the wave beam that port 7 and port 8 are realized Figuration, it needs the second class communication node to feed back pre- matrix instruction (PMI:Pre-coding Matrix Indicator), order Indicate the selection of (RI:Rank Indicator) Lai Shixian wave beam.Or the channel heterogeneite according to time division multiplex system, first Class communication node come select send data wave beam.These methods, limit on one side send data wave beam number, such as 1 or Person 2, still further aspect, because only first kind communication node or the second class communication node select to send the waves of data Beam, thus it is not accurate enough, or have biggish feedback quantity, in the method fed back based on PMI and RI in R9, it is necessary to feed back PMI and RI.

Summary of the invention

It the purpose of the present invention is to provide a kind of beam form-endowing method, determines beam forming method and device to be feedback, realizes wave The accuracy and reduction feedback quantity of the beam selection of beam figuration, improve system performance, increase the coverage area of system.

In order to solve the above-mentioned technical problem, the embodiment of the present invention provides a kind of beam form-endowing method, applied to including at least The system of one the second class communication node, the beam form-endowing method, comprising:

Send original wave beam；

Receive the initial beam index set that the second class communication node is determined according to the original wave beam；

Set, which is indexed, according to the initial beam determines the purpose wave beam being used to send data.

Wherein, the second class communication node is application terminal.

Further, the step of sending original wave beam specifically includes:

The identical one group of antenna of polarization direction is selected to send original wave beam.

Further, the step of sending original wave beam specifically includes:

The antenna that selection is arranged in one group of same polarization direction of same a line sends original wave beam or selection is arranged in together The antenna of one group of same polarization direction of one column sends original wave beam.

Wherein, the step of set determines the purpose wave beam being used to send data is indexed according to the initial beam specifically to wrap It includes:

Successively select one to index from initial beam index and compared index as first, and from initial beam indexed set It is deleted in conjunction, if described first is compared index and meet one of following condition, described compared index by first and be incorporated to purpose Beam index set:

A1. first is compared the value information for indexing corresponding wave beam and the index in any one initial beam index set The distance of corresponding wave beam weight information is greater than the second threshold value, wherein the distance refers to the chordal distance of two value informations；

B1. first is compared the value information for indexing corresponding wave beam and the index in any one initial beam index set The correlation of corresponding wave beam weight information is less than third threshold value, wherein the correlation refers to the inner product of two value informations；

C1. first is compared the value information for indexing corresponding wave beam and the index in any one initial beam index set Corresponding wave beam weight information is not at same group, wherein the wave beam grouping is to divide in advance well；

Determine that the corresponding wave beam of purpose beam index set is purpose wave beam.

The embodiment of the present invention also provides a kind of method of determining initial beam index set, is applied to include at least one the The system of a kind of communication node, the method for the determining initial beam index set, comprising:

The corresponding signal of original wave beam that the first kind communication node is sent is received, and calculates channel quality information；

According to the channel quality information, initial beam index set is determined, and feed back to the first kind communication node.

Further, the first kind communication node is wireless telecom equipment.

Preferably, the channel quality information include but is not limited to receive power, received signal to noise ratio, receive Signal to Interference plus Noise Ratio and Receive carry it is dry make an uproar than one of.

Wherein, according to the channel quality information, determine that the step of initial beam index is gathered specifically includes:

Determine channel quality information maximum value in original wave beam；

Defining the corresponding beam index of original wave beam is original beam index set, is successively selected from original beam index One index is compared index as second, is compared index for described second and deleted from original beam index set, if Meet one of following condition, compared index for described second and be merged into initial beam index set:

A2. second is greater than the first threshold value by the channel quality information for indexing corresponding wave beam is compared；

B2. it second is differed by the channel quality information for indexing corresponding wave beam is compared with the maximum value of the channel quality information Less than the second threshold value, and described compared the value information for indexing corresponding wave beam and any one other original beam index collection The distance of the value information of the corresponding wave beam of index in conjunction is greater than third threshold value, wherein the distance refers to two value informations Chordal distance；

C2. it second is differed by the channel quality information for indexing corresponding wave beam is compared with the maximum value of the channel quality information Less than the second threshold value, and described compared the value information for indexing corresponding wave beam and any one other original beam index collection The correlation of the value information of the corresponding wave beam of index in conjunction is less than the 4th threshold value, wherein the correlation refers to two weight letters The inner product of breath；

D2. it second is differed by the channel quality information for indexing corresponding wave beam is compared with the maximum value of the channel quality information Less than the second threshold value, and described compared the value information for indexing corresponding wave beam and any one other original beam index collection The value information of the corresponding wave beam of index in conjunction is not in same grouping, wherein the wave beam grouping is preparatory point good.

Further, the determination method of first threshold value includes at least:

E. preconfigured fixed value；

F. in the original wave beam channel quality information of all wave beams average value；

G. the channel quality information of the original wave beam is arranged by sequence from big to small, and successively taken greater than primary wave Beam index gathers the average value of the channel quality information of the original wave beam of corresponding wave beam number.

The embodiment of the present invention also provides a kind of device for realizing wave beam forming, is applied to first kind communication node, the dress It sets and includes:

Sending module, for sending original wave beam；

Receiving module, the initial beam index set determined for receiving the second class communication node；

First determining module determines purpose wave beam for indexing to gather according to the initial beam.

The embodiment of the present invention also provides a kind of device for realizing wave beam forming, is applied to the second class communication node, the dress It sets and includes:

Computing module, the original wave beam sent for receiving the first kind communication node, and calculate the channel matter of wave beam Measure information；

Second determining module, for determining initial beam index set according to the channel quality information of the wave beam；

Sending module, for sending the initial beam index set to the first kind communication node.

Above-mentioned technical proposal of the invention at least has the following beneficial effects:

In the beam form-endowing method of the embodiment of the present invention, by first kind communication node and the second class communication node cooperation come Wave beam is selected, while reducing wave beam feedback quantity, the accuracy of selection wave beam is improved, improves the property of wireless telecommunication system Can, increase the coverage area of system.

Detailed description of the invention

Fig. 1 a indicates H-plane sectoral horn (antenna) schematic diagram in the prior art；

Fig. 1 b indicates E-plane sectoral horn (antenna) schematic diagram in the prior art；

Fig. 1 c indicates pyramidal horn antenna schematic diagram in the prior art；

Fig. 1 d indicates conical-horn antenna schematic diagram in the prior art；

Fig. 2 a indicates single polarization linear array schematic diagram in the array antenna system of the prior art；

Fig. 2 b indicates dual polarization linear array schematic diagram in the array antenna system of the prior art；

Fig. 2 c indicates single polarization planar array schematic diagram in the array antenna system of the prior art；

Fig. 2 d indicates dual polarization planar array schematic diagram in the array antenna system of the prior art；

Fig. 3 a indicates the two dimensional beam figuration schematic diagram of the identical pitch angle of different orientations in the prior art；

Fig. 3 b indicates the two dimensional beam figuration schematic diagram of same orientation angle difference pitch angle in the prior art；

Fig. 4 indicates three-dimensional wave beam forming schematic diagram in the prior art；

Fig. 5 indicates the method and step schematic diagram of wave beam forming in the embodiment of the present invention.

Specific embodiment

To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool Body embodiment is described in detail.

The present invention is not accurate enough the determination for the wave beam for sending data in the prior art and aiming at the problem that have larger feedback quantity, A kind of beam form-endowing method is provided, determines beam forming method and device to be feedback, passes through first kind communication node and the communication of the second class Node cooperates to select wave beam, while reducing wave beam feedback quantity, improves the accuracy of selection wave beam, improves channel radio The performance of news system increases the coverage area of system.

As shown in figure 5, the embodiment of the present invention provides a kind of beam form-endowing method, it is applied to logical including at least second class Believe the system of node, the beam form-endowing method, comprising:

Step 10, original wave beam is sent；

Step 20, it receives the second class communication node and set is indexed according to the initial beam that the original wave beam determines；

Step 30, set is indexed according to the initial beam and determines the purpose wave beam being used to send data.

In the above embodiment of the present invention, mesh is selected by cooperating for first kind communication node and the second class communication node Wave beam, improve the accuracy of wave beam forming；Wherein the effect of the second class communication node is to determine primary wave according to original wave beam Beam index set, and it is fed back to first kind communication node；First kind communication node is then true according to initial beam index set Its fixed purpose wave beam.Further, the initial beam index set and the purpose wave beam can be one, and two even more It is a, the number of wave beam can be determined according to the size for the information that need to be transmitted and the method for selection, increase the coverage area of system.

Wherein, the second class communication node is application terminal.

Second class communication node described in the embodiment of the present invention be application terminal, as data card, mobile phone, laptop, PC, tablet computer, personal digital assistant, bluetooth etc., but it is not limited only to this, all terminals that can receive data exist It is applicable in the present invention.

In the above embodiment of the present invention, the specific steps of step 10 include:

Step 101, the identical one group of antenna of selection polarization direction sends original wave beam.

In the embodiment of the present invention, if must be executed when sending raw information using the aerial array of dual polarization linear array Step 101, the identical one group of antenna of selection polarization direction sends original wave beam, and enabled amount concentrates on useful direction, increases The signal-to-noise ratio of system, to improve the coverage area of system.

Step 102, the antenna that selection is arranged in one group of same polarization direction of same a line sends original wave beam or selection The antenna for being arranged in one group of same polarization direction of same row sends original wave beam.

Planar array antenna is used in the embodiment of the present invention, when if sending raw information, step 102 must be executed, selected The antenna for being arranged in one group of same polarization direction of same a line sends original wave beam or selection be arranged in one group of same row it is same The antenna of one polarization direction sends original wave beam.Wherein, it by being weighted processing to antenna element, enables data to by finger Fixed direction directive sending, enabled amount concentrate on useful direction, increase the signal-to-noise ratio of system, to improve channel radio The performance of news system.

Further, in the embodiment of the present invention, the specific steps of step 30 include:

Step 301, successively select one to index from initial beam index and compared index as first, and from primary wave It is deleted in beam index set, if described first is compared index and meet one of following condition, described is compared index for first It is incorporated to purpose beam index set:

Step 302, determine that the corresponding wave beam of purpose beam index set is purpose wave beam.

In the specific embodiment of the invention, the specific implementation of step 301 and step 302 is exemplified below:

If the initial beam indexed set received is combined into S2, purpose beam index collection is combined into S3, and S3 is initialized as empty set. Step 301, select a wave beam in S2 to be incorporated to set S3:a1 if it meets one of following condition: the wave beam is corresponding Value information and the value information distance of any one wave beam in S2 set be greater than the second threshold value D1.Here, distance refers to The chordal distance of two weight vectors；B1: the weight of the corresponding value information of the wave beam and any one wave beam in S2 set is believed It ceases correlation and is less than third threshold value D2.Here, correlation refers to the inner product of two weight vectors；C1: the corresponding weight of the wave beam Information and S2 gather in any one wave beam corresponding weight not at same group, wave beam grouping here refers to have divided in advance. Step 301 is repeated until set S2 is sky.Step 302: the element number for determining S3 set is final transmission data Wave beam number, the corresponding wave beam of index in S3 are the purpose wave beam for being ultimately used to send data.

Preferably, the wave beam grouping in step c1 refers to that first kind communication node and the second class communication node divide in advance , meet that vector between group is orthogonal and the wave beam of the conditions such as intra class correlation, grouping standard can be according to one in the communication technology As standard carry out.Wherein, the average value that the determination of the second threshold value D1 and third threshold value D2 can determine for repetition test, can also For the value of artificial settings, it can be determined according to the accuracy etc. of transmission data, be not limited only to a fixed value.

In order to preferably realize that above-mentioned purpose, the embodiment of the present invention also provide a kind of side of determining initial beam index set Method, applied to the system for including at least a first kind communication node, the method for the determining initial beam index set, packet It includes:

Step 40, the corresponding signal of original wave beam that the first kind communication node is sent is received, and calculates channel quality Information；

Step 50, according to the channel quality information, initial beam index set is determined, and it is logical to feed back to the first kind Believe node.

In the above embodiment of the present invention, purpose is selected by cooperating for first kind communication node and the second class communication node Wave beam improves the accuracy of wave beam forming；Wherein, the second class communication node improves choosing for determining initial beam index set Select the accuracy of wave beam.

Wherein, in the above embodiment of the present invention, the first kind communication node is wireless telecom equipment.

First kind communication node described in the embodiment of the present invention is wireless telecom equipment, such as macro base station, micro-base station, is directly put It stands, relay, remote device, wireless access point etc., but being not limited only to this, all wireless telecom equipments that can send data exist It is applicable in the present invention.

Further, in the above embodiment of the present invention, the channel quality information includes but is not limited to receive power, connect Receive signal-to-noise ratio, receive Signal to Interference plus Noise Ratio and receive carry it is dry make an uproar than one of.

It can be selected according to the demand emphasis difference of first kind communication node and the second class communication node in the embodiment of the present invention Different channel quality informations is selected to determine initial beam index set, can also more preferably be selected in combination with multiple, such as Wave beam to be feedback is determined jointly using power and received signal to noise ratio is received in specific embodiments of the present invention, improves beam selection Accuracy.

Further, in the above embodiment of the present invention, according to the channel quality information in step 50, primary wave is determined Beam indexes the specific steps gathered

Step 501, channel quality information maximum value in original wave beam is determined；

Step 502, defining the corresponding beam index of original wave beam is original beam index set, successively from original wave beam rope Draw it is middle select an index as second to be compared index, described second is compared to index and is deleted from original beam index set It removes, if meeting one of following condition, is compared index for described second and be merged into initial beam index set:

In the embodiment of the present invention, the specific implementation of step 501 and step 502 is exemplified below:

If the collection of the corresponding beam index of original wave beam is combined into S1, initial beam indexed set is combined into S2, and S2 is initialized as Empty set.Step 502, a wave beam in S1 is selected, and it is deleted from S1, if it meets one of following condition, simultaneously Enter set S2；A2: the channel quality information of the wave beam is greater than the first threshold T H1；B2: the channel quality information and letter of the wave beam The maximum value of road quality information is differed less than the second threshold value D1, and any one wave in corresponding value information and S2 set The value information distance of beam is greater than third threshold value D2.Here, distance refers to the chordal distance of two value informations；B2: the wave beam Channel quality information is differed with the maximum value of channel quality information less than the second threshold value D1, and corresponding value information and S2 collection The value information correlation of any one wave beam in conjunction is less than the 4th threshold value D3.Here, correlation refers to two value informations Inner product；C2: the channel quality information of the wave beam is differed with the maximum value of channel quality information less than the second threshold value D1, and right Any one wave beam in the value information answered and S2 set not at same group, what wave beam grouping here had divided in advance.It repeats Step 502 is executed until set S1 is sky.Index in S2 is M beam index in initial beam index, determines S2 collection The element number of conjunction is wave beam number M to be feedback.

Preferably, the wave beam grouping in step d2 refers to that first kind communication node and the second class communication node divide in advance , meet that vector between group is orthogonal and the wave beam of the conditions such as intra class correlation, grouping standard can be according to one in the communication technology As standard carry out.Wherein, the determination of the second threshold value D1, third threshold value D2 and the 4th threshold value D3 can determine for repetition test Average value, can also be the value being manually set, can be determined according to accuracy etc. of transmission data, be not limited only to a fixed value.

Wherein, in the above embodiment of the present invention, the determination method of first threshold value is included at least:

E. preconfigured fixed value；

The determination method of first threshold value described in the embodiment of the present invention is not limited only to three of the above method, other can be quasi- The method for determining the first threshold value is applicable in the present invention.

Further, it in order to preferably describe method of the invention, is illustrated below:

Specific embodiment 1:

In the present embodiment, first kind communication node is assumed to be base station, and the second class communication node is mobile terminal.On base station Configure N_beamA electromagnetic horn, for example, N_beamIt can be the positive integers such as 12,15,18,24.Each electromagnetic horn can be towards a difference Direction on send wave beam, synchronization, base station can choose one or more electromagnetic horns therein as the transmission of the same terminal Data, the data that wherein loudspeaker are sent are that tool is directive, are a wave beams.Base station and terminal are completed to send out as follows The electromagnetic horn of data is sent to select, i.e. beam selection.

(1) base station is in N_beamIn a time slot, successively an electromagnetic horn is selected to send signal, each moment and a loudspeaker Antenna index binding.

(2) terminal selection is in N_beamThe signal that base station is sent is received in a time slot, and calculates the corresponding letter for receiving signal Road quality information such as receives power.Wherein, the corresponding channel quality information of i-th of time slot is CQI_i, i=1 ..., N_Beam。

(3) terminal feeds back maximum M CQI_iCorresponding beam index feeds back to base station

(4) base station receives the index that terminal is sent, and therefrom selection is ultimately used to send the wave of data by the following method Beam.

If all initial beam indexed sets received are combined into S2, the purpose beam index collection for being ultimately used to hair data is combined into S3, and S3 is initialized as empty set.(4.1) to step (4.4) complete the final determination of wave beam as follows.

(4.1) a maximum beam index of channel quality information CQIi is selected in S2, and it is deleted from S2, it will It is incorporated to set S3.

(4.2) wave beam in S2 is selected, and it is deleted from S2, any one wave beam in the wave beam and S3 is not In same group.Here wave beam grouping, refers to what base station and terminal had been divided in advance, for example, being all physically in every group of wave beam Three adjacent electromagnetic horns, for example, first group is { N_Beam, 1,2 }, i-th group is { i-1, i, i+1 }, the number in bracket Word is beam index, it corresponds to the electromagnetic horn physically arranged.

(4.3) step (4.2) is repeated until set S2 is sky.

(4.4) element number for determining S3 set is the wave beam number of final transmission data, and the index in S3 is corresponding Wave beam is the wave beam for being ultimately used to send data.

The selection course of wave beam is completed by step (1)-(4) base station and terminal, base station is by finally determining wave beam pair The terminal sends data.This process is can in certain cycle to carry out.Or it is triggered if necessary by terminal It is carried out behind base station.It is also possible to carry out after base station is triggered according to current channel quality information.

Here time slot, orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) OFDM symbol in system or orthogonal frequency division multiple access (Orthogonal Frequency Division Multiplexing Access, OFDMA) OFDMA symbol.

In a further embodiment, the inner channel quality information of step (2) is also possible to received signal to noise ratio, receives and believes dry make an uproar Than, receive carry it is dry make an uproar than etc..It is described again here.

In a further embodiment, the inner M initial beam of selection of step (3) can carry out as follows:

If all original beam index collection are combined into S1, it is combined into S2 for sending out the initial beam indexed set of data, and at the beginning of S2 Beginning turns to empty set.(3.1) to step (3.4) complete the final determination of wave beam as follows.

(3.1) beam index is selected in S1, and it is deleted from S1, is incorporated into set S2.

(3.2) wave beam in S1 is selected, and it is deleted from S1, any one wave beam in the wave beam and S2 is not In same group.Here wave beam grouping, refers to what base station and terminal had been divided in advance, for example, being all physically in every group of wave beam Three adjacent electromagnetic horns, for example, first group is { N_Beam, 1,2 }, i-th group is { i-1, i, i+1 }, the number in bracket Word is beam index, it corresponds to the electromagnetic horn physically arranged.

(3.3) step (3.2) is repeated until set S1 is sky.

(3.4) determine the element number of S2 set for the corresponding wave beam of index in the number M, S2 of initial beam as just The M wave beam of beginning.

At this moment, step (4) can directly determine the purpose wave beam of final transmission data.

Specific embodiment 2:

In the present embodiment, first kind communication node is assumed to be base station, and the second class communication node is mobile terminal.On base station Each sector configuration has an antenna of Nt root linear array, the polarization direction of every antenna all, such as positive 45 ° of poliarizing antennas or Minus 45 ° of poliarizing antennas or horizontally-polarized antenna or vertical polarized antenna, antenna alignment are as shown in Figure 2 a.This Nt root antenna, can be with Pass through N_BeamA weight vector is invented a N_BeamThe wave beam of different directions.Wherein, its weight vector is W_i,W_iFor N_t×1 Norm be 1 column vector, i=1 ..., N_Beam.One simply example is that it is DFT vector, i.e.,θ_iThe as pointing direction of wave beam.Base station and terminal are completed as follows Send the beam selection of data.

(1) base station is in N_BeamIn a time slot, successively a beam weight vector is selected to be weighted to form wave beam to antenna Figuration sends signal, and each moment binds with a weight vector index.

(3) terminal feeds back maximum M corresponding beam index and feeds back to base station

(4.1) a channel quality information CQI is selected in S2_iMaximum beam index, and it is deleted from S2, it will It is incorporated to set S3.

(4.2) wave beam in S2 is selected, and it is deleted from S2, any one wave beam in the wave beam and S3 is not In same group.Here wave beam grouping, refers to what base station and terminal had been divided in advance, for example, the value information in every group of wave beam It is relevant and chordal distance is big as far as possible, and the weight vector between group is orthogonal.

(4.3) step (4.2) is repeated until set S2 is sky.

(4.4) element number for determining S3 set is the wave beam number of final transmission data, and the index in S3 is corresponding Wave beam is the purpose wave beam for being ultimately used to send data.

In a further embodiment, the inner channel quality information of step (2) is also possible to received signal to noise ratio, receives and believes dry make an uproar Than, receive carry it is dry make an uproar than etc..

In a further embodiment, step (4.2) is replaced in the following method: selection S2 in a wave beam, and by its It is deleted from S2, the value information distance of the corresponding value information of the wave beam and any one wave beam in S2 set is greater than D1. Here, distance refers to the chordal distance of two value informationsWherein, subscript H indicates the conjugate transposition to vector.

In a further embodiment, step (4.2) is replaced in the following method: selection S2 in a wave beam, and by its It is deleted from S2, the corresponding value information of the wave beam and the value information correlation of any one wave beam in S2 set are less than D2.Here, correlation refers to the inner product of two value informations；Wherein, subscript indicates the conjugate transposition to vector.

In a further embodiment, the wave beam of the inner M feedback of selection of step (3) can carry out as follows:

(3.1) the maximum beam index of channel quality information is selected in S1, and it is deleted from S1, is incorporated into collection Close S2.

(3.2) wave beam of the channel quality information greater than TH1 in selection S1 or its channel quality information and maximum Channel quality information difference is less than the wave beam of D3, and it is deleted from S1, any one wave beam in the wave beam and S2 does not exist In same group.Here wave beam grouping, refer to what base station and terminal had been divided in advance, for example, here wave beam grouping, refer to base station with What terminal had been divided in advance, for example, the value information in every group of wave beam is relevant and chordal distance is big as far as possible, and the power between group to Amount is orthogonal.

(3.3) step (3.2) is repeated until set S1 is sky.

(3.4) determine that the element number that S2 gathers is for the corresponding wave beam of index in wave beam number M, S2 to be sent M initial wave beam.

Certainly, in a further embodiment, step (3.2) can replace with the following method:

Wave beam of the channel quality information greater than TH1 or its channel quality information and maximum channel in selection S1 Quality information difference is less than the wave beam of D3, and it is deleted from S1, appointing in the corresponding value information of the wave beam and S2 set The value information distance of what wave beam is greater than D1.Here, distance refers to the chordal distance of two weight vectors Wherein, subscript H indicates the conjugate transposition to vector.

Wave beam of the channel quality information greater than TH1 or its channel quality information and maximum channel in selection S1 Quality information difference is less than the wave beam of D3, and it is deleted from S1, appointing in the corresponding value information of the wave beam and S2 set The value information correlation of what wave beam is less than D2.Here, correlation refers to the inner product r=of two weight vectors | W_i ^HW_j|；Its In, subscript H indicates the conjugate transposition to vector.

Specific embodiment 3:

In the present embodiment, first kind communication node is assumed to be base station, and the second class communication node is mobile terminal.On base station Each sector configuration has the antenna of the linear dual-polarized array of Nt root, and every antenna can be positive 45 ° of poliarizing antennas or minus 45 ° of polarization Antenna or horizontally-polarized antenna or vertical polarized antenna, antenna alignment are as shown in Figure 2 b.This Nt root antenna, can pass through N_BeamIt is a Weight vector is invented a N_BeamThe wave beam of different directions.Wherein, weight vector W_i,W_iFor N_t× 1 norm is 1 Column vector, i=1 ..., N_Beam.One simply example is the sub-array antenna in same polarization direction, it is DFT arrow Amount, i.e.,θ_iThe as pointing direction of the polarization direction sub-array antenna wave beam, then The weight vector of entire aerial array can be expressed asBase station and terminal are complete as follows At the beam selection for sending data.

(1) base station is in N_BeamIn a time slot, successively select the weight vector of a subarray to the day of the same polarization direction Line be weighted with formed wave beam send signal, each moment with oneIndex binding.

Wherein, it selects the weight of subarray to send data, can exponentially reduce the time slot for sending wave beam.

(4.1) beam index is selected in S2, and it is deleted from S2, is incorporated into set S3.

(4.3) step (4.2) is repeated until set S2 is sky.

(4.4) element number for determining S3 set is the wave beam number of final transmission data, and the index in S3 is corresponding Wave beam is the wave beam of the final choice of selection, forms the weight of entire aerial array with the corresponding weight of the wave beam, and with whole The weight of a array sends the wave beams of data.

It is with the weight mode that the weight of subarray generates entire array,

In a further embodiment, step (4.2) is replaced in the following method: selection S2 in a wave beam, and by its It is deleted from S2, the value information distance of the corresponding value information of the wave beam and any one wave beam in S2 set is greater than D1. Here, distance refers to the chordal distance of two weight vectorsWherein, subscript H indicates the conjugate transposition to vector.

In a further embodiment, step (4.2) is replaced in the following method: selection S2 in a wave beam, and by its It is deleted from S2, the corresponding value information of the wave beam and the value information correlation of any one wave beam in S2 set are less than D2.Here, correlation refers to the inner product r=of two weight vectors | W_i ^HW_j|；Wherein, subscript H indicates the conjugate transposition to vector.

(3.3) step (3.2) is repeated until set S1 is sky.

Wave beam of the channel quality information greater than TH1 or its channel quality information and maximum channel in selection S1 Quality information difference is less than the wave beam of D3, and it is deleted from S1, appointing in the corresponding value information of the wave beam and S2 set The value information distance of what wave beam is greater than D1.Here, distance refers to the chordal distance of two weight vectorsWherein, subscript H indicates the conjugate transposition to vector.

Wave beam of the channel quality information greater than TH1 or its channel quality information and maximum channel in selection S1 Quality information difference is less than the wave beam of D3, and it is deleted from S1, appointing in the corresponding value information of the wave beam and S2 set The value information correlation of what wave beam is less than D2.Here, correlation refers to the inner product r=of two value informations | W_i ^HW_j|；Its In, subscript H indicates the conjugate transposition to vector.

Specific embodiment 4:

In the present embodiment, first kind communication node is assumed to be base station, and the second class communication node is mobile terminal.On base station Each sector configuration has an antenna of Nt rhizoplane array, the polarization direction of every antenna all, such as positive 45 ° of poliarizing antennas or Minus 45 ° of poliarizing antennas or horizontally-polarized antenna or vertical polarized antenna, antenna alignment is as shown in Figure 2 c, and these antenna is arranged in N₁ Row M₁Column.This Nt root antenna, can pass through N_BeamA weight vector is invented a N_BeamThe wave beam of different directions.Wherein, it Weight vector is W_i,W_iFor N_tThe column vector that × 1 norm is 1, i=1 ..., N_Beam.One simply example is, each column It is DFT vector to the weight of antenna, i.e.,φ_lThe as direction side of the train wave beam To, l=1 ..., N_v.It is DFT vector to the weight of the antenna of every a line, i.e., θ_mThe as pointing direction of the wave beam of the traveling wave beam, m=1 ..., N_h.The corresponding weight shape of wave beam in base station the two directions of column It is at final weightOrHere, W^hThe weight of same array antenna, W^hFor same a line day The weight of line,Indicate kronecker product.Base station and terminal complete the selection course to wave beam by two stages.

First stage completes the beam selection to same array antenna as follows.

(1) base station is in N_vIn a time slot, a wave beam weight W is successively selected_l ^vVector is weighted shape to the antenna with 1 column Signal is sent at wave beam forming, each moment binds with a weight vector index.

(2) terminal selection is in N_vThe signal that base station is sent is received in a time slot, and calculates the corresponding channel for receiving signal Quality information such as receives power.Wherein, the corresponding channel quality information of i-th of time slot is CQI_i, i=1 ..., N_v。

(3) terminal feeds back maximum CQI_iCorresponding beam index feeds back to base station

(4) base station receives the index that terminal is sent, and the beam shape-endowing weight value of the determining column is。

Second stage completes the selection to same a line antenna beam as follows:

(1) base station is in N_hIn a time slot, a wave beam weight is successively selectedVector is weighted shape to the antenna with 1 row Signal is sent at wave beam forming, each moment binds with a weight vector index.

(2) terminal selection is in N_hThe signal that base station is sent is received in a time slot, and calculates the corresponding channel for receiving signal Quality information such as receives power.Wherein, the corresponding channel quality information of i-th of time slot is CQI_i, i=1 ..., N_h。

(4) base station receives the index that terminal is sent, and is really determined as follows the beam index of the antenna of the row.

(4.3) step (4.2) is repeated until set S2 is sky.

The selection course of the wave beam of second stage is completed by step (1)-(4) base station and terminal, it is assumed that the wave of selection The corresponding weight of beam is that the wave beam weight that base station is determined by the first stage and second stage determine Weight form final weight.Wherein this process can beOrHere, kronecker product is indicated.The terminal is sent out by finally determining wave beam base station Send data.This process is can in certain cycle to carry out.Or to trigger base station if necessary by terminal laggard Row.It is also possible to carry out after base station is triggered according to current channel quality information.

In a further embodiment, the step of second stage (4.2) is replaced in the following method: a wave in selection S2 The value information of beam, and it is deleted from S2, the corresponding value information of the wave beam and any one wave beam in S2 set away from From greater than D1.Here, distance refers to the chordal distance of two value informationsWherein, subscript H is indicated to vector Conjugate transposition.

In a further embodiment, the step of second stage (4.2) is replaced in the following method: a wave in selection S2 Beam, and it is deleted from S2, the value information phase of the corresponding value information of the wave beam and any one wave beam in S2 set Closing property is less than D2.Here, correlation refers to the inner product r=of two weight vectors | W_i ^HW_j|；Wherein, subscript H expression is total to vector Yoke transposition.

In a further embodiment, the step of second stage (3) it is inner selection M feed back wave beam can as follows into Row:

(3.3) step (3.2) is repeated until set S1 is sky.

(3.4) determine that the element number that S2 gathers is for the corresponding wave beam of index in wave beam number M, S2 to be sent The corresponding index of M wave beam to be feedback.

At this moment, the step of second stage (4) can directly determine the purpose wave beam of final transmission data.

Certainly, in a further embodiment, the step of second stage (3.2) can replace with the following method:

Wave beam of the channel quality information greater than TH1 or its channel quality information and maximum channel in selection S1 Quality information difference is less than the wave beam of D3, and it is deleted from S1, appointing in the corresponding value information of the wave beam and S2 set The value information distance of what wave beam is greater than D1.Here, distance refers to the chordal distance of two value informations Wherein, subscript H indicates the conjugate transposition to vector.

Specific embodiment 5:

In the present embodiment, first kind communication node is assumed to be base station, and the second class communication node is mobile terminal.On base station Each sector configuration has the antenna of Nt rhizoplane array, and every antenna has a polarization direction, such as positive 45 ° of poliarizing antennas or negative 45 ° of poliarizing antennas or horizontally-polarized antenna or vertical polarized antenna, antenna alignment is as shown in Figure 2 d, and these antenna is arranged in N₁Row M₁Column.This Nt root antenna, can pass through N_BeamA weight vector is invented a N_BeamThe wave beam of different directions.Wherein, it is weighed Value vector is W_i, W_iFor N_tThe column vector that × 1 norm is 1, i=1 ..., N_Beam.One simply example is the day of each column It is DFT vector to the weight of line, i.e.,φ_lThe as direction side of the train wave beam To, l=1 ..., N_v.It is DFT vector to the weight of the antenna of the same polarization direction of every a line, i.e.,φ_lThe as pointing direction of the wave beam of the traveling wave beam, l=1 ..., N_v, the row The weighted vector of all antennas can be expressed asThe wave beam pair in base station the two directions of column The weight answered forms final weightOrHere, W^vThe weight of same array antenna, W^h For the weight of same a line antenna,Indicate kronecker product.Base station and terminal complete the selection to wave beam by two stages Journey.

First stage completes the beam selection to same array antenna as follows.

Second stage completes the selection to same a line antenna beam as follows:

(1) base station is in N_hIn a time slot, a wave beam weight is successively selectedVector is to the same polarization direction with 1 row Antenna be weighted to form wave beam forming and send signal, each moment binds with weight vector index.

(4.3) step (4.2) is repeated until set S2 is sky.

The selection course of the wave beam of second stage is completed by step (1)-(4) base station and terminal, it is assumed that the wave of selection The corresponding weight of beam isThen the beam shape-endowing weight value of the row antenna can be extended toThe wave beam weight that base station is determined by the first stageIt is formed most with the weight that second stage determines Whole weight.Wherein this process can beOr Here,Indicate kronecker product.Base station sends data to the terminal by finally determining wave beam.This process is can be Carry out to certain cycle.Or it is carried out after triggering base station if necessary by terminal.It is also possible to base station according to current Channel quality information triggering after carry out.

In a further embodiment, the step of second stage (4.2) is replaced in the following method: a wave in selection S2 The value information of beam, and it is deleted from S2, the corresponding value information of the wave beam and any one wave beam in S2 set away from From greater than D1.Here, distance refers to the chordal distance of two weight vectorsWherein, subscript H is indicated to vector Conjugate transposition.

In a further embodiment, the step of second stage (4.2) is replaced in the following method: one in selection S2 Wave beam, and it is deleted from S2, the value information of the corresponding value information of the wave beam and any one wave beam in S2 set Correlation is less than D2.Here, correlation refers to the inner product r=of two weight vectors | W_i ^HW_j|；Wherein, subscript H is indicated to vector Conjugate transposition.

(3.3) step (3.2) is repeated until set S1 is sky.

In order to preferably realize that above-mentioned purpose, the embodiment of the present invention provide a kind of device for realizing wave beam forming again, apply In first kind communication node, described device includes:

Sending module 01, for sending original wave beam；

Receiving module 02, the initial beam index set determined for receiving the second class communication node；

First determining module 03 determines purpose wave beam for indexing to gather according to the initial beam.

In order to preferably realize that above-mentioned purpose, the embodiment of the present invention also provide a kind of device for realizing wave beam forming, apply In the second class communication node, described device includes:

Computing module 04, the original wave beam sent for receiving the first kind communication node, and calculate the channel of wave beam Quality information；

Second determining module 05, for determining initial beam index set according to the channel quality information of the wave beam；

Sending module 06, for sending the initial beam index set to the first kind communication node.

In the embodiment of the present invention, wave beam is selected by first kind communication node and the cooperation of the second class communication node, While reducing wave beam feedback quantity, the accuracy of selection wave beam is improved, the performance of wireless telecommunication system is improved, increases and is The coverage area of system.Wherein above-mentioned beam form-endowing method and determining initial beam index all embodiments of collection approach and its have Beneficial effect is applicable in the system of this realization wave beam forming.

The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, without departing from the principles of the present invention, several improvements and modifications can also be made, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims

1. a kind of beam form-endowing method, applied to the system for including at least a second class communication node, which is characterized in that described Beam form-endowing method, comprising:

Send original wave beam；

Set is indexed according to the initial beam and determines the purpose wave beam being used to send data, comprising: successively from initial beam rope Draw and select one index in set as first and compared index, and index from initial beam gather in delete, if described the One, which is compared index, meets one of following condition, then is compared index for described first and be incorporated to purpose beam index set:

A1. the index in the first value information for being compared the corresponding wave beam of index is gathered with any one initial beam index is corresponding Wave beam weight information distance be greater than the second threshold value, wherein the distance refers to the chordal distance of two value informations；

B1. the index in the first value information for being compared the corresponding wave beam of index is gathered with any one initial beam index is corresponding Wave beam weight information correlation be less than third threshold value, wherein the correlation refers to the inner product of two value informations；

C1. the index in the first value information for being compared the corresponding wave beam of index is gathered with any one initial beam index is corresponding Wave beam weight information not at same group, wherein wave beam grouping is point good in advance, and wave beam grouping refers to first kind communication node Divide in advance with the second class communication node, has met that vector between group is orthogonal and the wave beam of intra class correlation condition；

Determine that the corresponding wave beam of purpose beam index set is purpose wave beam；

The first kind communication node is wireless telecom equipment, and the second class communication node is application terminal.

2. beam form-endowing method according to claim 1, which is characterized in that the step of sending original wave beam specifically includes:

3. beam form-endowing method according to claim 1, which is characterized in that the step of sending original wave beam specifically includes:

The antenna that selection is arranged in one group of same polarization direction of same a line sends original wave beam or selection is arranged in same row The antenna of one group of same polarization direction send original wave beam.

4. a kind of method of determining initial beam index set, applied to the system for including at least a first kind communication node, It is characterized in that, the method for the determining initial beam index set, comprising:

According to the channel quality information, initial beam index set is determined, and feed back to the first kind communication node, wrap It includes: determining channel quality information maximum value in original wave beam；

Defining the corresponding beam index of original wave beam is original beam index set, and one is successively selected from original beam index Index is compared index as second, is compared index for described second and deleted from original beam index set, if met One of following condition is compared index for described second and is merged into initial beam index set:

B2. the second channel quality information for being compared the corresponding wave beam of index is differed with the maximum value of the channel quality information is less than Second threshold value, and in the value information and any one other original beam index set for being compared the corresponding wave beam of index The distance of value information of the corresponding wave beam of index be greater than third threshold value, wherein the distance refer to the strings of two value informations away from From；

C2. the second channel quality information for being compared the corresponding wave beam of index is differed with the maximum value of the channel quality information is less than Second threshold value, and in the value information and any one other original beam index set for being compared the corresponding wave beam of index The corresponding wave beam of index value information correlation less than the 4th threshold value, wherein the correlation refers to two value informations Inner product；

D2. the second channel quality information for being compared the corresponding wave beam of index is differed with the maximum value of the channel quality information is less than Second threshold value, and in the value information and any one other original beam index set for being compared the corresponding wave beam of index The corresponding wave beam of index value information not in same grouping, wherein the wave beam grouping is point good, wave beam grouping in advance Refer to what first kind communication node and the second class communication node had divided in advance, meets that vector between group is orthogonal and intra class correlation item The wave beam of part；

5. the method for determining initial beam index set according to claim 4, which is characterized in that the channel quality letter Breath include but is not limited to receive power, received signal to noise ratio, receive Signal to Interference plus Noise Ratio and receive carry it is dry make an uproar than one of.

6. the method for determining initial beam index set according to claim 4, which is characterized in that first threshold value Determination method include at least:

E. preconfigured fixed value；

G. the channel quality information of the original wave beam is arranged by sequence from big to small, and successively taken greater than initial beam rope Draw the average value for gathering the channel quality information of original wave beam of corresponding wave beam number.

7. a kind of device for realizing wave beam forming, it is applied to first kind communication node, which is characterized in that described device includes:

Sending module, for sending original wave beam；

First determining module determines purpose wave beam for indexing to gather according to the initial beam, comprising: successively from initial beam An index is selected in index set as first and is compared index, and is deleted from initial beam index set, if described First, which is compared index, meets one of following condition, and the first index that compared is incorporated to purpose beam index set:

C1. the index in the first value information for being compared the corresponding wave beam of index is gathered with any one initial beam index is corresponding Wave beam weight information not at same group, wherein the wave beam grouping be it is point good in advance, wave beam grouping refers to that the first kind is logical Letter node and the second class communication node have divided in advance, meet that vector between group is orthogonal and the wave beam of intra class correlation condition；

8. a kind of device for realizing wave beam forming, it is applied to the second class communication node, which is characterized in that described device includes:

Computing module for receiving the original wave beam of first kind communication node transmission, and calculates the channel quality information of wave beam；

Second determining module, for determining initial beam index set according to the channel quality information of the wave beam, comprising: determine Channel quality information maximum value in original wave beam；

Sending module, for sending the initial beam index set to the first kind communication node；