CN105991171A

CN105991171A - Three-dimensional channel state information determination method and apparatus

Info

Publication number: CN105991171A
Application number: CN201510082794.5A
Authority: CN
Inventors: 李辉; 高秋彬; 陈润华; 拉盖施
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-02-15
Filing date: 2015-02-15
Publication date: 2016-10-05
Anticipated expiration: 2035-02-15
Also published as: CN105991171B

Abstract

The embodiment of the invention discloses a three-dimensional channel state information determination method and apparatus. A network device carries out grouping on terminals based on first dimensionality characteristics of the terminals and a first dimensionality beam forming matrix corresponding to each group of terminals is determined, so that each terminal group has the same or similar first dimensionality characteristic. Beam forming is carried out on a second dimensionality pilot signal corresponding to each terminal group by using the first dimensionality beam forming matrix corresponding to each terminal group and then the processed signal is sent; a network device receives second dimensionality channel state information fed back by the terminals based on the second dimensionality pilot signals and determines three-dimensional channel state information of the terminals according to the second dimensionality channel state information of the terminals and the first dimensionality beam forming matrixes corresponding to the groups of the terminals, so that determination of the three-dimensional state information becomes accurate.

Description

A kind of three dimensional channel status information determines method and device

Technical field

The present invention relates to communication technical field, particularly relate to a kind of three dimensional channel status information and determine method and dress Put.

Background technology

In the cellular system, base-station antenna array is typically horizontally arranged.Transmission end of base station wave beam is only capable of at water Square to being adjusted, and vertical direction is fixing angle of declination to each user, and the most various wave beams are composed Shape/precoding technique etc. is all based on what horizontal direction channel information was carried out.It is true that owing to wireless signal exists Being three-dimensional propagation in space, the method for fixing angle of declination can not make the performance of system reach optimum.Vertical Square To wave beam adjust and have critically important meaning for the raising of systematic function.

Along with the development of antenna technology, industry goes out the active antenna being now able to independently control each a period of time. Use this design, the two dimension knot that aerial array can be arranged by present horizontally arranged enhancing to horizontal and vertical Structure.As shown in Fig. 1 a to Fig. 1 d, for 3D (3 Dimension, three-dimensional) MIMO (Multiple-Input Multiple-Out-put, Multiple Input Multiple Output) in two-dimensional antenna structural representation, this figure gives antenna Number is antenna array structure when 8,16,32,64.One key property of 3D MIMO is base station side Number of antennas is the most, such as 64 antennas or higher.The mode of this aerial array so that wave beam is vertically Dynamically adjusting of direction is possibly realized.

In current FDD (Frequency Division Duplexing, FDD) system, descending The acquisition of CSI (Channel State Indicator, channel condition information), need UE (User Equipment, Terminal) utilize downlink reference signal that down channel is estimated, and feedback-related information is to base station side.By Increase in base station side number of antennas, need the reference signal of greater number, cause overhead to increase.And TDD In (Time Division Duplexing, time division duplex) system, owing to up-downgoing channel uses identical work Working frequency, can estimate to obtain complete descending channel information by up channel according to channel reciprocity. But, the antenna calibration of big quantity is relatively difficult.If there is antenna calibration error, then can cause down channel That estimates is inaccurate, and then affects systematic function.

As can be seen here, in the case of antenna for base station number is more, the most accurately obtain between base station and terminal 3D channel condition information, and then dynamically adjust horizontal dimensions or vertical dimensions wave beam, become 3D MIMO A key issue in technology.

Summary of the invention

The embodiment of the present invention provides a kind of three-dimensional information status information to determine method and device, in order to accurately to obtain Three dimensional channel status information between base station and terminal.

A kind of three dimensional channel status information that the embodiment of the present invention provides determines method, including:

Terminal is grouped by the network equipment according to the first dimensional properties of terminal；

The described network equipment determines the first dimension wave beam formed matrix that often group terminal is corresponding；

The described network equipment uses the first dimension wave beam formed matrix that often group terminal is corresponding respectively, to often organizing end The second dimension pilot signal corresponding to end sends after carrying out wave beam forming；

The described network equipment receives the terminal the second dimensional channel according to described second dimension pilot signal feedback Status information, and it is grouped institute belonging to the second dimensional channel status information of described terminal and described terminal The first corresponding dimension wave beam formed matrix, determines the three dimensional channel status information of described terminal.

It is preferred that terminal is grouped by the described network equipment according to the first dimensional properties of terminal, including:

The described network equipment, according to the arrival angle of the terminal in coverage, determines the angle in the first dimension direction Distribution；

The angular distribution scope in described first dimension direction is divided into M subrange by the described network equipment；

The described network equipment is divided into one group by arriving angle terminal in same subrange, obtains M eventually End packet.

The described network equipment is the transmission resource that terminal configures the second dimension pilot signal；

The described network equipment uses the first dimension wave beam formed matrix to carry out described second dimension pilot signal Figuration also sends；

The described network equipment receives port index or second dimension of the second dimension pilot resources of terminal feedback Degree pilot resources index or the reception power of multiple second dimension pilot signal, described second dimension pilot tone money The port index in source or the second dimension pilot resources index are that terminal is measured through the first dimension wave beam forming The receiving power and feed back of the second dimension pilot signal after matrix figuration；

The port index or second of the second dimension pilot resources that the described network equipment is fed back according to terminal Dimension pilot resources index or the reception power of multiple second dimension pilot signal, determine the first dimension of correspondence Degree wave beam formed matrix, is divided into one group by terminal identical for the first dimension wave beam formed matrix, or by first Dimension wave beam formed matrix belongs to the terminal of same first dimension wave beam formed matrix subset and is divided into one group, and one The relativity measurement between the first dimension wave beam formed matrix in individual first dimension wave beam formed matrix subset Value is more than setting threshold value.

The described network equipment is the transmission resource of the second dimension pilot signal of terminal one Q port of configuration, Q Not less than the number of elements in the first dimension wave beam formed matrix set；

The described network equipment uses Q pilot signal transmission port to send the second dimension pilot signal, each leads Frequently the second dimension that signal sending end mouth uses a first dimension wave beam formed matrix to send the port is led Frequently signal carries out wave beam forming, and described Q pilot signal sends the first dimension wave beam forming that port is used All elements in Matrix cover the first dimension wave beam formed matrix set；

The described network equipment receives the port index of the second dimension pilot resources of terminal feedback, described second dimension The port index of degree pilot resources is that terminal measures Q end after the first dimension wave beam formed matrix figuration The reception power of the second dimension pilot signal of mouth, and feed back the second dimension pilot tone that maximal received power is corresponding Resource port index or feed back all Q receive power, if described terminal feedback all Q reception power, Then determined that the described network equipment receives the port rope of the second dimension pilot resources of terminal by the described network equipment Draw；

The port index of the second dimension pilot resources that the described network equipment is fed back according to terminal, determines that it is right The the first dimension wave beam formed matrix answered, is divided into one by terminal identical for this first dimension wave beam formed matrix Group, or this first dimension wave beam formed matrix is belonged to the terminal of same first dimension wave beam formed matrix subset It is divided into one group, between the first dimension wave beam formed matrix in a first dimension wave beam formed matrix subset Relativity measurement value more than set threshold value；

Or, terminal is grouped by the described network equipment according to the first dimensional properties of terminal, including:

The described network equipment is the transmission resource of the second dimension pilot signal of terminal Q N-port of configuration, and Q is not Less than the number of elements in the first dimension wave beam formed matrix set, N is the integer more than or equal to 1；

The described network equipment uses Q pilot resources to send the second dimension pilot signal, and each transmission resource makes The the second dimension pilot signal sent the port with a first dimension wave beam formed matrix carries out wave beam tax Shape；The first dimension wave beam formed matrix that described Q pilot resources is used covers the first dimension wave beam forming All elements in set of matrices；

The described network equipment receives the index of the second dimension pilot resources of terminal feedback, and described second dimension is led Frequently the index of resource is that terminal measures Q after the first dimension wave beam formed matrix figuration transmission resource The reception power of the second dimension pilot signal, and feed back the second dimension pilot resources that maximal received power is corresponding Index or feed back all Q receive power, if described terminal feedback all Q reception power, then by The described network equipment determines that the described network equipment receives the index of the second dimension pilot resources of terminal；

The index of the second dimension pilot resources that the described network equipment is fed back according to terminal, determines its correspondence First dimension wave beam formed matrix, is divided into one group by terminal identical for this first dimension wave beam formed matrix, Or the terminal that this first dimension wave beam formed matrix belongs to same first dimension wave beam formed matrix subset draws It is divided into one group, between the first dimension wave beam formed matrix in a first dimension wave beam formed matrix subset Relativity measurement value is more than setting threshold value.

The described network equipment is the transmission resource of the first dimension pilot signal of terminal one N-port of configuration, N For the integer more than 1；

The described network equipment uses the transmission resource of the first dimension pilot signal of described N-port to send first Dimension pilot signal；

The described network equipment receives the terminal the first dimension PMI according to described first dimension pilot signal feedback； Wherein, described terminal is according to the first dimension pilot signal received and predefined first dimension wave beam Figuration set of matrices, determines the first dimension PMI；

The first dimension PMI that the described network equipment is fed back according to terminal, by the first dimension PMI of feedback Identical terminal is divided into one group, maybe the first dimension PMI of feedback is belonged to same first dimension wave beam forming The terminal of matrix subset is divided into one group, the first dimension ripple in a first dimension wave beam formed matrix subset Relativity measurement value between bundle figuration matrix is more than setting threshold value.

It is preferred that the described network equipment determines the first dimension wave beam formed matrix that often group terminal is corresponding, including:

The described network equipment determines the first dimension wave beam forming of correspondence according to the feedback information of same group of terminal Matrix, wherein, the feedback information of same group of terminal is identical；

The described network equipment using the first dimension wave beam formed matrix of determining as this group terminal corresponding Dimension wave beam formed matrix；

Or, the described network equipment determines the first dimension wave beam formed matrix that often group terminal is corresponding, including:

The described network equipment determines the first dimension wave beam forming of correspondence according to the feedback information of same group of terminal Matrix, wherein, the first dimension wave beam formed matrix corresponding to the feedback information of same group of terminal belongs to same First dimension wave beam formed matrix subset；

The described network equipment is by the first dimension wave beam formed matrix corresponding to the feedback information of same group of terminal All first dimension wave beam formed matrixes in affiliated first dimension wave beam formed matrix subset carry out processing To a first dimension wave beam formed matrix, using the first dimension wave beam formed matrix of obtaining as this group terminal The first corresponding dimension wave beam formed matrix.

The pilot signal that the described network equipment sends according to terminal carries out uplink channel estimation, obtains up channel Information；

The described network equipment is based on up channel and the reciprocity of down channel, according to the up letter of described terminal Road information obtains the descending channel information of described terminal；

The described network equipment, according to the descending channel information of the terminal in same group, determines that this group terminal is corresponding First dimension wave beam formed matrix.

It is preferred that all antenna elements of the described network equipment are divided into K group, K is whole more than or equal to 1 Number；

Described the second dimension pilot signal to often organizing corresponding to terminal carries out wave beam forming, including:

The described network equipment all uses described K group antenna element to be transmitted, by K group sky for often organizing terminal Line unit is further divided into P shape-endowing weight value group, P≤K, and K and P and is the integer more than or equal to 1； For the first dimension wave beam formed matrix corresponding to each end packet, each shape-endowing weight value group uses first Corresponding some column vectors composition beam shape-endowing weight value in dimension wave beam formed matrix, to the second dimension pilot signal Carry out wave beam forming, the some column vectors in the first dimension wave beam formed matrix that each shape-endowing weight value group uses The beam shape-endowing weight value of composition is different from each other.

It is preferred that divide belonging to described the second dimensional channel status information according to described terminal and described terminal The first dimension wave beam formed matrix corresponding to group, determines the three dimensional channel status information of described terminal, including:

The three dimensional channel status information of described terminal is determined according to below equation:

P = V &CircleTimes; W

Or

P = W &CircleTimes; V

Wherein, P is three-dimensional pre-coding matrix, and V is the first dimension wave beam formed matrix, and W is the second dimension Pre-coding matrix,Accord with for Kronecker product calculation.

It is preferred that described first dimension is vertical dimensions, described second dimension is horizontal dimensions；Or, institute Stating the first dimension is horizontal dimensions, and described second dimension is vertical dimensions.

The embodiment of the present invention provides a kind of network equipment, including:

Grouping module, for being grouped terminal according to the first dimensional properties of terminal；

Determine wave beam formed matrix module, for determining the first dimension wave beam formed matrix that often group terminal is corresponding；

Sending module, for using the first dimension wave beam formed matrix that often group terminal is corresponding respectively, to often group The second dimension pilot signal corresponding to terminal sends after carrying out wave beam forming；

Determine channel condition information module, for receiving terminal according to described second dimension pilot signal feedback Second dimensional channel status information, and according to the second dimensional channel status information of described terminal and described end The first dimension wave beam formed matrix corresponding to being grouped belonging to end, determines the three dimensional channel state letter of described terminal Breath.

It is preferred that described grouping module specifically for:

Arrival angle according to the terminal in coverage, determines the angular distribution scope in the first dimension direction；

The angular distribution scope in described first dimension direction is divided into M subrange；

It is divided into one group by arriving angle terminal in same subrange, obtains M end packet.

It is preferred that described grouping module specifically for:

The transmission resource of the second dimension pilot signal is configured for terminal；

Use the first dimension wave beam formed matrix that described second dimension pilot signal is carried out figuration and sent；

Receive port index or the second dimension pilot resources rope of the second dimension pilot resources of terminal feedback Draw or the reception power of multiple second dimension pilot signal, the port index of described second dimension pilot resources Or the second dimension pilot resources index is that terminal is measured after the first dimension wave beam formed matrix figuration The receiving power and feed back of the second dimension pilot signal；

The port index of the second dimension pilot resources fed back according to terminal or the second dimension pilot resources Index or the reception power of multiple second dimension pilot signal, determine the first dimension wave beam forming square of correspondence Battle array, is divided into one group by terminal identical for the first dimension wave beam formed matrix, or by the first dimension wave beam forming Matrix belongs to the terminal of same first dimension wave beam formed matrix subset and is divided into one group, a first dimension ripple The relativity measurement value between the first dimension wave beam formed matrix in bundle figuration matrix subset is more than setting threshold Value.

It is preferred that described grouping module specifically for:

For the transmission resource of the second dimension pilot signal of terminal one Q port of configuration, Q is not less than the first dimension Number of elements in degree wave beam formed matrix set；

Use Q pilot signal to send port and send the second dimension pilot signal, each pilot signal transmitting terminal The second dimension pilot signal that mouth uses a first dimension wave beam formed matrix to send the port carries out ripple Bundle figuration, described Q pilot signal sends the first dimension wave beam formed matrix covering first that port is used All elements in dimension wave beam formed matrix set；

Receive the port index of the second dimension pilot resources of terminal feedback, described second dimension pilot resources Port index is the second dimension that terminal measures Q port after the first dimension wave beam formed matrix figuration The reception power of pilot signal, and feed back the second dimension pilot resources port index that maximal received power is corresponding Or feed back all Q and receive power, if all Q of described terminal feedback receives power, then by described point Group module determines that described grouping module receives the port index of the second dimension pilot resources of terminal；

According to the port index of the second dimension pilot resources that terminal is fed back, determine the first dimension of its correspondence Wave beam formed matrix, is divided into one group by terminal identical for this first dimension wave beam formed matrix, or by this Dimension wave beam formed matrix belongs to the terminal of same first dimension wave beam formed matrix subset and is divided into one group, The dependency degree between the first dimension wave beam formed matrix in one the first dimension wave beam formed matrix subset Value is more than setting threshold value；

Or, described grouping module specifically for:

For the transmission resource of the second dimension pilot signal of terminal Q N-port of configuration, Q is not less than the first dimension Number of elements in wave beam formed matrix set, N is the integer more than or equal to 1；

Using Q pilot resources to send the second dimension pilot signal, each transmission resource uses one first dimension The second dimension pilot signal that the port is sent by degree wave beam formed matrix carries out wave beam forming；Lead for described Q Frequently the first dimension wave beam formed matrix that resource is used covers in the first dimension wave beam formed matrix set All elements；

Receive the index of the second dimension pilot resources of terminal feedback, the index of described second dimension pilot resources It is that terminal measures Q after the first dimension wave beam formed matrix figuration the second dimension pilot tone sending resource The reception power of signal, and feed back the index of the second dimension pilot resources corresponding to maximal received power or anti- Present all Q and receive power, if all Q of described terminal feedback receives power, then by described grouping module Determine that described grouping module receives the index of the second dimension pilot resources of terminal；

According to the index of the second dimension pilot resources that terminal is fed back, determine the first dimension wave beam of its correspondence Figuration matrix, is divided into one group by terminal identical for this first dimension wave beam formed matrix, or by this first dimension Degree wave beam formed matrix belongs to the terminal of same first dimension wave beam formed matrix subset and is divided into one group, one The relativity measurement value between the first dimension wave beam formed matrix in first dimension wave beam formed matrix subset More than setting threshold value.

It is preferred that described grouping module specifically for:

For the transmission resource of the first dimension pilot signal of terminal one N-port of configuration, N is whole more than 1 Number；

The transmission resource using the first dimension pilot signal of described N-port sends the first dimension pilot signal；

Receive the terminal the first dimension PMI according to described first dimension pilot signal feedback；Wherein, described end End is according to the first dimension pilot signal received and predefined first dimension wave beam formed matrix collection Close, determine the first dimension PMI；

The first dimension PMI fed back according to terminal, divides terminal identical for the first dimension PMI of feedback It is one group, maybe the first dimension PMI of feedback is belonged to the terminal of same first dimension wave beam formed matrix subset It is divided into one group, between the first dimension wave beam formed matrix in a first dimension wave beam formed matrix subset Relativity measurement value more than set threshold value.

It is preferred that described determine wave beam formed matrix module specifically for:

Feedback information according to same group of terminal determines the first dimension wave beam formed matrix of correspondence, wherein, same The feedback information of one group of terminal is identical；

The the first dimension wave beam formed matrix determined is composed as the first dimension wave beam that this group terminal is corresponding Shape matrix；

Or, described determine wave beam formed matrix module specifically for:

Feedback information according to same group of terminal determines the first dimension wave beam formed matrix of correspondence, wherein, same The first dimension wave beam formed matrix corresponding to the feedback information of one group of terminal belongs to same first dimension wave beam Figuration matrix subset；

By the first dimension belonging to the first dimension wave beam formed matrix corresponding to the feedback information of same group of terminal All first dimension wave beam formed matrixes in wave beam formed matrix subset carry out process and obtain one first dimension Degree wave beam formed matrix, using the first dimension wave beam formed matrix of obtaining as the first dimension corresponding to this group terminal Degree wave beam formed matrix.

Carry out uplink channel estimation according to the pilot signal that terminal sends, obtain uplink channel information；

Based on up channel and the reciprocity of down channel, obtain institute according to the uplink channel information of described terminal State the descending channel information of terminal；

According to the descending channel information of the terminal in same group, determine the first dimension wave beam that this group terminal is corresponding Figuration matrix.

Described sending module specifically for:

Described K group antenna element is all used to be transmitted, by further for K group antenna element for often organizing terminal It is divided into P shape-endowing weight value group, P≤K, and K and P and is the integer more than or equal to 1；For each end The first dimension wave beam formed matrix corresponding to end packet, each shape-endowing weight value group uses the first dimension wave beam forming Corresponding some column vectors composition beam shape-endowing weight value in matrix, carries out wave beam tax to the second dimension pilot signal Shape, the wave beam of the some column vectors composition in the first dimension wave beam formed matrix that each shape-endowing weight value group uses Shape-endowing weight value is different from each other.

It is preferred that described determine channel condition information module specifically for:

P = V &CircleTimes; W

Or

P = W &CircleTimes; V

In the embodiment of the present invention, terminal is grouped by the network equipment according to the first dimensional properties of terminal, determines The first dimension wave beam formed matrix that often group terminal is corresponding, so, each end packet has same or similar The first dimensional properties.Use the first dimension wave beam formed matrix that often group terminal is corresponding respectively, to often organizing end The second dimension pilot signal corresponding to end sends after carrying out wave beam forming；The network equipment receives terminal according to institute State the second dimensional channel status information of the second dimension pilot signal feedback, and according to the second dimension of described terminal The first dimension wave beam formed matrix corresponding to being grouped belonging to degree channel condition information and described terminal, and then Determine the three dimensional channel status information of described terminal.Owing to often organizing terminal, there is same or analogous first dimension Characteristic, uses the first corresponding dimension wave beam formed matrix to enter the second dimension pilot signal for often organizing terminal Row wave beam forming, on the one hand can obtain the three dimensional channel status information of terminal feedback, on the other hand owing to having Use the first dimension wave beam formed matrix to being sent to have same or similar first dimensional properties pointedly The second dimension pilot signal of terminal carry out wave beam forming, so that the determination of three-dimensional state information is more Accurately.

Accompanying drawing explanation

Fig. 1 a-Fig. 1 d is two-dimensional antenna structural representation in prior art 3D MIMO；

A kind of three dimensional channel status information that Fig. 2 provides for the embodiment of the present invention determines method flow schematic diagram；

The transmission mode schematic diagram of a kind of vertical dimension CSI-RS that Fig. 3 provides for the embodiment of the present invention；

A kind of network equipment schematic diagram that Fig. 4 provides for the embodiment of the present invention；

The another kind of network equipment schematic diagram that Fig. 5 provides for the embodiment of the present invention.

Detailed description of the invention

In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to this Bright it is described in further detail, it is clear that described embodiment is only a part of embodiment of the present invention, Rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not doing Go out all other embodiments obtained under creative work premise, broadly fall into the scope of protection of the invention.

The system architecture that the embodiment of the present invention is suitable for includes the network equipment, and at least one terminal；Its In, the described network equipment can be base station, or is the transmitter in base station, described terminal can be movement station or Mobile terminals etc. can carry out the equipment of radio communication with the described network equipment.

The network equipment to terminal pilot signal transmitted, and can determine three dimensional channel according to the information of terminal feedback Status information (Channel State Information is called for short CSI).Described pilot signal can be used to do CSI measures or Reference Signal Received Power (Reference Signal Receiving Power, abbreviation RSRP) measurement etc., after terminal receives the pilot signal that the network equipment sends, measured, feed back CSI Or RSRP information is to the network equipment.In the embodiment of the present invention, described pilot signal is channel condition information ginseng Examine signal CSI-RS, it is also possible to be other pilot signal, such as cell common reference signal (Cell-specific Reference Signal is called for short CRS) etc..

A kind of three dimensional channel status information that Fig. 2 provides for the embodiment of the present invention determines method flow schematic diagram, The method includes:

Step 201, terminal is grouped by the network equipment according to the first dimensional properties of terminal；

Step 202, the described network equipment determines the first dimension wave beam formed matrix that often group terminal is corresponding；

Step 203, the described network equipment uses the first dimension wave beam formed matrix that often group terminal is corresponding respectively, Send after the second dimension pilot signal often organized corresponding to terminal is carried out wave beam forming；

Step 204, the described network equipment receives terminal according to the second of described second dimension pilot signal feedback Dimensional channel status information, and according to the second dimensional channel status information of described terminal and described terminal institute Belong to the first dimension wave beam formed matrix corresponding to packet, determine the three dimensional channel status information of described terminal.

In above-mentioned flow process, described first dimension is vertical dimensions and described second dimension is horizontal dimensions, or, Described first dimension can also be horizontal dimensions and described second dimension is vertical dimensions.

As a example by the first dimension is as vertical dimensions, described first dimensional properties can represent with the arrival angle of terminal, Also can be represented by terminal distribution in the vertical dimension..Correspondingly, in step 201, the network equipment can root It is grouped for terminal according to the arrival angle of terminal or distribution in the vertical dimension..

For example, a kind of packet mode is: the network equipment is according to the arrival angle pair of the terminal in coverage Terminal is grouped；Another kind of packet mode is: the network equipment is that terminal configures the second dimension pilot signal Send resource, use the first dimension wave beam formed matrix that described second dimension pilot signal is carried out figuration concurrent Send；The network equipment receives port index or the second dimension pilot tone of the second dimension pilot resources of terminal feedback Resource index or the reception power of multiple second dimension pilot signal, the end of described second dimension pilot resources Stomochord draws or the second dimension pilot resources index is that terminal is measured through the first dimension wave beam formed matrix tax The receiving power and feed back of the second dimension pilot signal after shape；The network equipment fed back according to terminal The port index of two-dimensions pilot resources or the second dimension pilot resources index or multiple second dimension are led Frequently the reception power of signal, determines the first dimension wave beam formed matrix of its correspondence, by this first dimension wave beam The terminal that figuration matrix is identical is divided into one group, or this first dimension wave beam formed matrix is belonged to same first The terminal of dimension wave beam formed matrix subset is divided into one group, in a first dimension wave beam formed matrix subset The first dimension wave beam formed matrix between relativity measurement value more than set threshold value.

Shown below is four kinds of preferred end packet modes, it should be noted that these four mode is the most excellent Select mode, any mode terminal being grouped according to the first dimensional properties all should be included in the guarantor of the present invention In the range of protecting.

The first end packet mode

In the first end packet mode, the arrival angle (DoA) of the terminal in network equipment statistics coverage, Such as, it is possible to use the arrival angle of terminal is estimated, so by classical super-resolution algorithms such as MUSIC etc. Afterwards according to the arrival angle of the terminal in coverage, determine the angular distribution scope in the first dimension direction, by The angular distribution scope in dimension direction is divided into M subrange, and will arrive angle in same subrange Terminal be divided into one group, obtain M end packet.Wherein, M is the integer more than 1.The value of M can Make an appointment, it is preferable that the value of M and the ripple in the first dimension wave beam formed matrix set pre-set Bundle figuration matrix quantity is identical, or is not more than the wave beam formed matrix quantity in this set.

As a kind of embodiment, the network equipment can use the mode of the dividing equally angular distribution model to the first dimension direction Enclose and divide.Such as, the terminal in the range of network equipment coverage is divided in the angle in the first dimension direction Cloth scope is [θ_min,θ_max], θ_minAnd θ_maxIt is respectively under the angular distribution scope in described first dimension direction Limit and the upper limit, then this scope can be evenly dividing as M subrange, wherein, i-th subrange by the network equipment Expression formula be

[θ_{\min} + (i - 1) \times \frac{θ_{\max} - θ_{\min}}{M}, θ_{\max} + i \times \frac{θ_{\max} - θ_{\min}}{M}], 1 \leq i \leq M .

As another kind of embodiment, the network equipment can also use non-divides equally the mode angle to the first dimension direction Degree distribution divides.Preferably, finer grain can be used for the interval of arrival angle integrated distribution Carry out subrange division, and for arriving angular distribution sparse interval, use relatively coarseness to carry out subrange Divide.Such as, in the range of 0 degree to 180 degree of vertical dimensions, the arrival angle integrated distribution of terminal is at 70 degree In 120 degree interval, then it is 2 subranges by the interval division of 70 degree to 120 degree, by 0 degree to 70 degree Interval as a subrange, interval as a subrange using 120 degree to 180 degree, thus terminal is arrived The interval of angle integrated distribution divides more subtly.

Use the first end packet mode above-mentioned, as a example by the first dimension is as vertical dimensions, network equipment root Terminal is grouped by the angular distribution situation of arrival of the terminal obtained according to statistics accordingly, on the one hand realization side Formula is simple, on the other hand, can relatively accurately reflect that terminal is in the vertical dimension. owing to arriving angle Characteristic, therefore group result is relatively reasonable.

The second end packet mode

The network equipment is the transmission resource of the second dimension pilot signal of terminal one Q port of configuration, and Q is the least Number of elements in the first dimension wave beam formed matrix set.The network equipment uses Q pilot signal to send Port sends the second dimension pilot signal, and each pilot signal sends port and uses a first dimension wave beam to compose The second dimension pilot signal that the port is sent by shape matrix carries out wave beam forming, and described Q pilot signal is sent out The first dimension wave beam formed matrix that sending end mouth is used covers in the first dimension wave beam formed matrix set All elements.

Terminal receives Q the port after the first dimension wave beam formed matrix figuration of network equipment transmission Second dimension pilot signal also measures reception power, corresponding to described network equipment feedback maximal received power The port index of the second dimension pilot resources.The maximal received power institute that the network equipment is fed back according to terminal is right The port index of the second dimension pilot resources answered, by end identical for the port index of the second dimension pilot resources End is divided into one group.Port index and the first dimension wave beam formed matrix phase due to the second dimension pilot resources Correspondence, the port index of the second identical dimension pilot resources illustrates that the first dimension wave beam formed matrix is the most identical. The maximal received power arrived due to terminal measurement, can reflect this terminal distribution situation in this first dimension, Therefore the terminal feeding back the port index of identical second dimension pilot resources is divided into one group, then in this group Terminal has same or analogous characteristic in the first dimension.

As another kind of embodiment, the first dimension wave beam formed matrix set is according to the degree of association between its element It is divided into multiple subset, there is between the first dimension wave beam formed matrix in each subset higher being correlated with Degree, the phase between the first dimension wave beam formed matrix in such as one the first dimension wave beam formed matrix subset Closing property metric is more than setting threshold value.The network equipment provides according to the second dimension pilot tone that maximal received power is corresponding The port index in source, determines the first dimension wave beam formed matrix of its correspondence, by the first dimension wave beam forming square Battle array belongs to the terminal of same first dimension wave beam formed matrix subset and is divided into one group.Owing to terminal measurement is arrived Maximal received power, can reflect this terminal distribution situation in this first dimension, therefore will feed back second The first dimension wave beam formed matrix corresponding to the port index of dimension pilot resources belongs to identical first dimension The terminal of wave beam formed matrix subset is divided into one group, then the terminal in this group has identical in the first dimension Or similar characteristic.A kind of mode determining subset can utilize the dependency between code word.Definition code book collection It is combined into [p₁,p₂,…,p_M], calculate code word p₁With remaining code word p₂,…,p_MBetween dependency, select correlation Bigger several code words and p₁Forming a set, this set is a subset, it is assumed that be defined as {p₁,p₂,p₃}；Calculate p again₄With code word p₅,…,p_MBetween dependency, select the bigger code word of correlation true Fixed second subset, it is assumed that be defined as { p₄,p₅}；Repeat this process and all complete subset division to whole code words. Wherein, described code word can be understood as the first dimension wave beam formed matrix.

As another kind of embodiment, terminal can also receive power to all Q of described network equipment feedback, All Q the reception power fed back according to terminal by the network equipment determine this terminal based on certain tolerance again The first dimension wave beam formed matrix, and terminal identical for the first dimension wave beam formed matrix is divided into one group, Or first dimension wave beam formed matrix belong to the terminal of same first dimension wave beam formed matrix subset and be divided into One group, being correlated with between the first dimension wave beam formed matrix in a first dimension wave beam formed matrix subset Property metric more than set threshold value.This measurement criterion can be the second dimension pilot tone that maximal received power is corresponding The port index of resource, it is also possible to be the port rope of the second dimension pilot resources that time maximal received power is corresponding Draw.

Using above-mentioned the second end packet mode, the network equipment can use multiple first dimension wave beam forming Matrix is sent to terminal after the second dimension pilot signal is carried out figuration so that terminal can be measured and obtain every kind Reception power corresponding to first dimension wave beam formed matrix, and receive power and can reflect that this terminal is first Characteristic in dimension, according to receiving the corresponding to the port index of the second dimension pilot resources that power determines Terminal is grouped by one-dimensional wave beam formed matrix accordingly so that have same or similar in the first dimension The terminal of characteristic is assigned in an end packet, so that be that an end packet is true in subsequent process A fixed wave beam formed matrix is relatively reasonable.

The third end packet mode

The network equipment is the transmission resource of the second dimension pilot signal of terminal Q N-port of configuration, and Q is not less than Number of elements in first dimension wave beam formed matrix set, N is the integer more than or equal to 1；The network equipment Using Q pilot resources to send the second dimension pilot signal, each transmission resource uses a first dimension ripple The second dimension pilot signal that the port is sent by bundle figuration matrix carries out wave beam forming；Described Q pilot tone money The first dimension wave beam formed matrix that source is used covers owning in the first dimension wave beam formed matrix set Element.

Terminal receives Q after the first dimension wave beam formed matrix figuration transmission money that the network equipment sends The second dimension pilot signal in source also measures reception power, to all Q the reception merits of described network equipment feedback The second dimension pilot resources index that in rate, maximal received power is corresponding.The network equipment is by maximal received power pair The the second dimension pilot resources answered indexes identical terminal and is divided into one group.Second dimension pilot resources index with First dimension wave beam formed matrix is corresponding, second identical dimension pilot resources index explanation the first dimension ripple Bundle figuration matrix is the most identical.The maximal received power arrived due to terminal measurement, can reflect this terminal this Distribution situation on dimension, is therefore divided into one by the terminal of identical for feedback the second dimension pilot resources index Group, then the terminal in this group has same or analogous characteristic in the first dimension.

As another kind of embodiment, the first dimension wave beam formed matrix set is according to the degree of association between its element It is divided into multiple subset, there is between the first dimension wave beam formed matrix in each subset higher being correlated with Degree, the phase between the first dimension wave beam formed matrix in such as one the first dimension wave beam formed matrix subset Closing property metric is more than setting threshold value.The network equipment is by the second corresponding for maximal received power dimension pilot resources Index, determines the first dimension wave beam formed matrix of its correspondence, and the first dimension wave beam formed matrix belongs to same The terminal of one first dimension wave beam formed matrix subset is divided into one group.The maximum reception arrived due to terminal measurement Power, can reflect this terminal distribution situation in this first dimension, therefore will feedback the second dimension pilot tone The first dimension wave beam formed matrix corresponding to resource index belongs to identical first dimension wave beam formed matrix The terminal of collection is divided into one group, then the terminal in this group has same or analogous characteristic in the first dimension.

As another kind of embodiment, terminal can also receive power to all Q of described network equipment feedback, All Q the reception power fed back according to terminal by the network equipment determine this terminal based on certain tolerance again The first dimension wave beam formed matrix, and terminal identical for the first dimension wave beam formed matrix is divided into one group, Or the terminal that the first dimension wave beam formed matrix belongs to same first dimension wave beam formed matrix subset divides It is one group, the phase between the first dimension wave beam formed matrix in a first dimension wave beam formed matrix subset Closing property metric is more than setting threshold value.This measurement criterion can be that the second dimension that maximal received power is corresponding is led Frequently resource index, it is also possible to be the second dimension pilot resources index that time maximal received power is corresponding.

Using the third end packet mode above-mentioned, the network equipment can use multiple first dimension wave beam forming Matrix is sent to terminal after the second dimension pilot signal is carried out figuration so that terminal can be measured and obtain every kind Reception power corresponding to first dimension wave beam formed matrix, and receive power and can reflect that this terminal is first Characteristic in dimension, according to the first dimension wave beam forming square corresponding to the second dimension pilot resources index determined Terminal is grouped by battle array accordingly so that the terminal in the first dimension with same or similar characteristic is divided It is fitted in an end packet, so that subsequent process is an end packet determines a wave beam forming Matrix is relatively reasonable.

4th kind of end packet mode

The network equipment is the transmission resource of the first dimension pilot signal of terminal one N-port of configuration, and N is big In the integer of 1.The network equipment uses the transmission resource of the first dimension pilot signal of described N-port to send the Dimension pilot signal.Such as, the first dimension pilot signal is vertical dimensions pilot signal, then the first dimension The transmission of pilot signal can use certain string in aerial array to be transmitted, it is possible to use multiple row is carried out Send.As it is shown on figure 3, be the transmission mode schematic diagram of a kind of vertical dimensions pilot signal, this figure uses First row antenna sends vertical dimensions pilot signal, the corresponding vertical dimension of each antenna element of this array antenna Degree pilot signal port.

Terminal receive the network equipment send the first dimension pilot signal, and according to the first dimension pilot signal with And predefined first dimension wave beam formed matrix set, determine the first dimension PMI.Terminal will be determined The first dimension PMI feed back to the described network equipment.

The first dimension PMI that the network equipment is fed back according to terminal, draws terminal identical for the first dimension PMI It is divided into one group.The first dimension PMI fed back due to terminal can reflect that this terminal is in this first dimension Distribution situation, is therefore divided into one group by the terminal feeding back identical first dimension PMI, then the terminal in this group First dimension has same or analogous characteristic.

As another kind of embodiment, the first dimension wave beam formed matrix set is according to the degree of association between its element It is divided into multiple subset, there is between the first dimension wave beam formed matrix in each subset higher being correlated with Degree, such as, between the first dimension wave beam formed matrix in a first dimension wave beam formed matrix subset Relativity measurement value is more than setting threshold value.First dimension PMI is belonged to same first dimension wave beam by the network equipment The terminal of figuration matrix subset is divided into one group.The first dimension PMI fed back due to terminal can reflect this Terminal distribution situation in this first dimension, therefore belongs to identical first dimension wave beam formed matrix by feedback The terminal of the first dimension PMI of subset is divided into one group, then the terminal in this group has phase in the first dimension Same or similar characteristic.

Using above-mentioned 4th kind of end packet mode, the first dimension pilot signal is sent to terminal by the network equipment, Terminal can be measured and obtain the first dimension PMI, and the first dimension PMI can reflect that this terminal is first Characteristic in dimension, is grouped terminal accordingly according to the first dimension PMI so that in the first dimension The terminal with same or similar characteristic is assigned in an end packet, so that in subsequent process be One end packet determines that a wave beam formed matrix is relatively reasonable.

In step 202., the network equipment can determine the down channel shape often organizing terminal in different ways State information, such as utilizes channel reciprocity or the CSI that feeds back for down-bound pilot frequency signal according to terminal to determine Downlink channel condition information, the downlink channel condition information determined includes the first dimension PMI of terminal. The network equipment processes further according to the first dimension wave beam formed matrix of the terminal in same group and determines this group The first dimension wave beam formed matrix that terminal is corresponding..

Introduce the network equipment in detail below and determine the side of often the first dimension wave beam formed matrix that group terminal is corresponding Formula.

(1) channel reciprocity is utilized to determine the first dimension wave beam formed matrix that often group terminal is corresponding

The pilot signal that the network equipment sends according to terminal carries out uplink channel estimation, obtains uplink channel information； The network equipment, based on up channel and the reciprocity of down channel, obtains end according to the uplink channel information of terminal The descending channel information of end；The network equipment, according to the descending channel information of the terminal in same group, determines this group The first dimension wave beam formed matrix that terminal is corresponding.This kind of mode can be applicable to TDD system.

In the embodiment of the present invention, channel reciprocity is only used for the first dimension that the network equipment determines that often group terminal is corresponding Wave beam formed matrix, compares with the method for the full precoding matrix that use complete channel reciprocity determines terminal, Reduce the impact of channel calibration error.

Illustrate to utilize channel reciprocity to determine the first dimension that often group terminal is corresponding with specific embodiment below The process of degree wave beam formed matrix.Here with the first dimension as vertical dimension, as a example by the second dimension is level dimension.

All antenna elements are divided into and are divided into K group (K is the integer more than or equal to 1), often by the network equipment Group antenna element includes K1 antenna element (K1 is the integer more than or equal to 1).The embodiment of the present invention The number that middle hypothesis often organizes antenna element is identical, if the number often organizing antenna element is different, its processing procedure and The processing mode that method is identical with the number often organizing antenna element is identical, repeats no more.Such as, for level With the aerial array of vertical two-dimensional arrangements, each array antenna unit can be divided into one group, or by every a line Antenna element is divided into one group.For the dual polarized antenna of horizontal and vertical two-dimensional arrangements, can be by an array antenna The antenna in equipolarization direction divides one group into, and i.e. one array antenna is divided into two groups according to polarised direction.Network sets For utilizing channel reciprocity to calculate the beam shape-endowing weight value in descending one group of antenna, and then use this wave beam Shape-endowing weight value carries out the wave beam forming of one group of internal antenna.

Assume that terminal is divided into I end packet by the network equipment, wherein, in i-th end packet, have A1 Individual terminal.The network equipment receives the uplink reference signals that each terminal sends, such as SRS (Sounding Reference Signal, detection reference signal), and use this reference signal to carry out uplink channel estimation.False If the up channel that the network equipment estimates a terminal in i-th end packet isThis channel is One N_tx×N_rxMatrix, wherein, N_txFor the antenna number for uplink receiving of network equipment end, N_rxFor Terminal end is for sending the antenna number of upward signal.

The vertical dimension antenna number assuming the aerial array of the network equipment is N_v, level dimension antenna number is N_h, i.e. Have

N_tx=N_v·N_h... ... formula (1)

This aerial array is grouped, K=N can be divided into by row_hGroup, i.e. every array antenna is divided into an antenna to divide Group, often group comprises K1=N_vIndividual antenna element.

Reciprocity based on channel, corresponding down channel is

H_{a}^{D} = {(H_{a}^{U})}^{T}

... ... formula (2)

Wherein, ()^TFor transposition computing.

The l root of l every trade vector counterpart terminal launch between the aerial array of antenna and the network equipment Channel.If this channel is arranged in order by the level dimension order of aerial array, then terminal antenna and the network equipment N between jth array antenna_rx×N_vDimension channel can represent:

M_{a, j}^{D} (l, n) = H_{d} (l, (n - 1) N_{h} + j)

... ... ... formula (3)

Wherein, l=1 ..., N_rx, n=1 ..., N_v, i.e. l is [1, N_rx] any one in scope be whole Number, n is [1, N_v] any one integer in scope.

If this channel is arranged in order by the vertical dimension order of aerial array, then the of terminal antenna and the network equipment Channel between j array antenna can be expressed as:

M_{a, j}^{D} (l, n) = H_{d} (l, (j - 1) N_{v} + n)

... ... ... formula (4)

By the N of the network equipment_hArray antenna (K antenna packet) is further separated into P shape-endowing weight value group, Each shape-endowing weight value group can comprise 1 ..., N_hArray antenna, uses identical vertical dimension shaped-beam in group Weights.If each shape-endowing weight value group only comprises 1 array antenna, then it is divided into P=K shape-endowing weight value group, The each column of corresponding vertical dimension all uses different shaped-beam weights；If comprised in each shape-endowing weight value group N_hArray antenna, then be divided into P=1 shape-endowing weight value group, and under this situation, all array antennas of vertical dimension make With identical shaped-beam weights.

Assume that the g group antenna element of the network equipment comprises N₁,…,N_GArray antenna, wherein, [N₁,N_G]∈[1,N_h], the vertical dimension wave beam of this shape-endowing weight value group is calculated below according to step 1 to step 4 Figuration matrix weights.

Step 1: calculate the covariance matrix of each array antenna in the g shape-endowing weight value group and this terminal, And the array antenna in group is averaged, obtain:

R_{a, g} = \frac{1}{G} Σ_{j = N_{1}}^{N_{G}} {(M_{a, j}^{D})}^{H} \cdot M_{a, j}^{D}

... ... formula (5)

Wherein, ()^HFor conjugate transpose computing,Between the jth array antenna of terminal antenna and the network equipment Channel.

Step 2: by the average association of the g shape-endowing weight value group of all A1 terminals in i-th end packet Variance matrix is averaged again, obtains the vertical dimension antenna association of the g shape-endowing weight value group of the i-th end packet

Variance matrix:

R_{g} = \frac{1}{A 1} Σ_{a = 1}^{A 1} R_{a, g}

... ... formula (6)

Step 3: this covariance matrix is carried out singular value SVD and decomposes and can obtain:

R_g=U_gΣU_g ^H,U_g=[u₁,…,u_Nv] ... ... formula (7)

Step 4: select the singular vector that wherein front F singular value is corresponding to constitute the g of the i-th end packet The vertical dimension shape-endowing weight value matrix V of individual shape-endowing weight value group_g(as F=1, constitute vertical dimension shape-endowing weight value vector):

V_g=[u₁,…,u_F] ... ... formula (8)

The vertical dimension wave beam formed matrix of all shape-endowing weight value groups of i-th end packet is tried to achieve according to this process, And constitute vertical dimension wave beam formed matrix V:

V=[V₁,…V₁,V₂,…V₂,…,V_g,…V_g...] ... ... formula (9)

Wherein, V₁The number that number is the 1st row that shape-endowing weight value group comprises, V₂Number be the 2nd The number of the row that shape-endowing weight value group comprises, the like.This vertical dimension wave beam formed matrix is the first dimension Degree wave beam formed matrix.The embodiment of the present invention use local channel reciprocity use compared in prior art Complete channel reciprocity, it is possible to be prevented effectively from and cause because of antenna calibration error down channel estimation inaccurate Phenomenon, improves the accuracy that pre-coding matrix calculates further, improves systematic function.

(2) CSI fed back for down-bound pilot frequency signal according to terminal determines downlink channel condition information

The network equipment receives the feedback information of same group of terminal, and determines according to the feedback information of same group of terminal Go out the first dimension wave beam formed matrix of correspondence as the first dimension wave beam formed matrix corresponding to this group terminal. If the feedback information of same group of terminal is identical, then the first dimension wave beam forming that the network equipment will be determined Matrix is as the first dimension wave beam formed matrix corresponding to this group terminal.If the feedback information institute of same group of terminal The first corresponding dimension wave beam formed matrix belongs to same first dimension wave beam formed matrix subset, then network sets Standby by the first dimension wave beam belonging to the first corresponding for the feedback information of same group of terminal dimension wave beam formed matrix All first dimension wave beam formed matrixes in figuration matrix subset carry out process and obtain a first dimension ripple Bundle figuration matrix, and using the first dimension wave beam formed matrix of obtaining as the first dimension corresponding to this group terminal Wave beam formed matrix.This kind of mode can be applicable to TDD system or FDD system.

As a kind of embodiment, the network equipment is by the first corresponding for the feedback information of same group of terminal dimension wave beam The all first dimension wave beam formed matrixes in the first dimension wave beam formed matrix subset belonging to figuration matrix Be averaged or weighting summation, obtain average after the first dimension wave beam formed matrix or weighting summation after the Dimension wave beam formed matrix, and by the after the first dimension wave beam formed matrix after average or weighting summation Dimension wave beam formed matrix is as the first dimension wave beam formed matrix corresponding to this group terminal..

In step 203, all antenna elements of the network equipment are divided into K group, and K is more than or equal to 1 Integer.The network equipment all uses described K group antenna element to be transmitted, by K group for often organizing terminal Antenna element is further divided into P shape-endowing weight value group, P≤K, and K and P and is more than or equal to 1 Integer；For the first dimension wave beam formed matrix corresponding to each end packet, each shape-endowing weight value group Use the corresponding some column vectors composition beam shape-endowing weight value in the first dimension wave beam formed matrix, to the second dimension Pilot signal carries out wave beam forming, if in the first dimension wave beam formed matrix of each shape-endowing weight value group use The beam shape-endowing weight value of dry column vector composition is different from each other.

As an embodiment, all antenna elements of the network equipment have 8 row, and each column antenna element is divided Being one group, one is divided into 8 groups of antenna elements, respectively group 1, organizes 2 ... group 8, and one of them terminal The first dimension wave beam formed matrix corresponding to packet comprises 5 the first dimension wave beam forming vectors.Entering During row transmission, 8 groups of antenna elements are merged into 5 big groups by the network equipment, such as by group 1, group 2, group 3 and group 4 Merge into one big group, and organize 5, group 6, group 7, group 8 are respectively one one big groups.The network equipment can use 8 groups of antenna elements are merged into 5 big groups by the mode merged flexibly, and the present invention is without limitation.After merging 5 group antenna elements greatly use above-mentioned 5 the first dimension wave beam forming vectors to the second dimension pilot signal respectively Carry out wave beam forming, and each big group of the first dimension wave beam forming vector used is different from each other.

In step 204, after terminal receives the second dimension pilot signal after the figuration that the network equipment sends, The second dimensional channel status information is fed back to the network equipment by measuring this second dimension pilot signal.Network sets For receiving the second dimensional channel status information of terminal feedback and according to below equation (10) or formula (11) Determine the three dimensional channel status information of terminal:

P = V &CircleTimes; W

... ... formula (10)

Or

P = W &CircleTimes; V

... ... formula (11)

Based on identical technology design, the embodiment of the present invention also provides for a kind of network equipment, this network equipment Particular content is referred to said method to be implemented, and does not repeats them here.

A kind of network equipment schematic diagram that Fig. 4 provides for the embodiment of the present invention, this network equipment can be base station, As it can be seen, this network equipment comprises the steps that

Grouping module 401, for being grouped terminal according to the first dimensional properties of terminal；

Determine wave beam formed matrix module 402, for determining the first dimension wave beam forming that often group terminal is corresponding Matrix；

Sending module 403, for using the first dimension wave beam formed matrix that often group terminal is corresponding respectively, right Often the group the second dimension pilot signal corresponding to terminal sends after carrying out wave beam forming；

Determine channel condition information module 404, be used for receiving terminal anti-according to described second dimension pilot signal Second dimensional channel status information of feedback, and according to the second dimensional channel status information of described terminal and institute State the first dimension wave beam formed matrix corresponding to packet belonging to terminal, determine the three dimensional channel shape of described terminal State information.

It is preferred that described grouping module 401 specifically for:

Specifically, described grouping module 401 specifically for:

Or, described grouping module 401 specifically for:

It is preferred that described grouping module 401 specifically for:

It is preferred that described determine wave beam formed matrix module 402 specifically for:

The the first dimension wave beam formed matrix determined is composed as the first dimension wave beam that this group terminal is corresponding Shape matrix；Or, described determine wave beam formed matrix module 402 specifically for:

Described sending module 403 specifically for:

It is preferred that described determine channel condition information module 404 specifically for:

P = V &CircleTimes; W

Or

P = W &CircleTimes; V

The another kind of network equipment schematic diagram that Fig. 5 provides for the embodiment of the present invention, including: processor 501, receipts Send out machine 502, memorizer 503；

Processor 501, for reading the program in memorizer 503, performs following process: according to the first of terminal Terminal is grouped by dimensional properties, and determines the first dimension wave beam formed matrix that often group terminal is corresponding；Point Do not use the first dimension wave beam formed matrix that often group terminal is corresponding, to the second dimension often organized corresponding to terminal Pilot signal is sent by described transceiver 502 after carrying out wave beam forming；Terminal root is received by transceiver 502 According to the second dimensional channel status information of described second dimension pilot signal feedback, and according to the second dimension of terminal The first dimension wave beam formed matrix corresponding to being grouped belonging to degree channel condition information and described terminal, determines The three dimensional channel status information of terminal；

Transceiver 502, for receiving and sending data under the control of processor 501.

It is preferred that processor 501 specifically for:

Specifically, processor 501 specifically for:

Use Q pilot signal to send port by transceiver 502 and send the second dimension pilot signal, each lead Frequently the second dimension that signal sending end mouth uses a first dimension wave beam formed matrix to send the port is led Frequently signal carries out wave beam forming, and described Q pilot signal sends the first dimension wave beam forming that port is used All elements in Matrix cover the first dimension wave beam formed matrix set；

The port index of the second dimension pilot resources of terminal feedback is received by transceiver 502, described second The port index of dimension pilot resources is that terminal measures the Q after the first dimension wave beam formed matrix figuration The reception power of the second dimension pilot signal of port, and the second dimension feeding back maximal received power corresponding leads Frequently resource port index or feed back all Q receive power, if described terminal feedback all Q reception merit By described grouping module, rate, then determine that described grouping module receives the port of the second dimension pilot resources of terminal Index；

Or, processor 501 specifically for:

Using Q pilot resources to send the second dimension pilot signal by transceiver 502, each transmission resource makes The the second dimension pilot signal sent the port with a first dimension wave beam formed matrix carries out wave beam tax Shape；The first dimension wave beam formed matrix that described Q pilot resources is used covers the first dimension wave beam forming All elements in set of matrices；

The index of the second dimension pilot resources of terminal feedback, described second dimension is received by transceiver 502 The index of pilot resources is that terminal measures Q after the first dimension wave beam formed matrix figuration transmission resource The reception power of the second dimension pilot signal, and feed back the second dimension pilot tone money that maximal received power is corresponding The index in source or feed back all Q and receive power, if all Q the reception power of described terminal feedback, then Determined that described grouping module receives the index of the second dimension pilot resources of terminal by described grouping module；

It is preferred that processor 501 specifically for:

For the transmission resource of the first dimension pilot signal of terminal one N-port of configuration, N is whole more than 1 Number；The transmission resource being used the first dimension pilot signal of described N-port by transceiver 502 sends first Dimension pilot signal；Terminal is received according to the of described first dimension pilot signal feedback by transceiver 502 Dimension PMI；Wherein, described terminal is according to the first dimension pilot signal received and predefined First dimension wave beam formed matrix set, determines the first dimension PMI；The first dimension fed back according to terminal PMI, is divided into one group by terminal identical for the first dimension PMI of feedback, maybe by the first dimension of feedback PMI belongs to the terminal of same first dimension wave beam formed matrix subset and is divided into one group, a first dimension ripple The relativity measurement value between the first dimension wave beam formed matrix in bundle figuration matrix subset is more than setting threshold Value.

It is preferred that processor 501 specifically for:

Feedback information according to same group of terminal determines the first dimension wave beam formed matrix of correspondence, wherein, same The feedback information of one group of terminal is identical；Using the first dimension wave beam formed matrix of determining as this group terminal pair The the first dimension wave beam formed matrix answered；

Or, processor 501 specifically for:

Feedback information according to same group of terminal determines the first dimension wave beam formed matrix of correspondence, wherein, same The first dimension wave beam formed matrix corresponding to the feedback information of one group of terminal belongs to same first dimension wave beam Figuration matrix subset；Belonging to the first dimension wave beam formed matrix corresponding to the feedback information of same group of terminal The first dimension wave beam formed matrix in first dimension wave beam formed matrix subset carries out process and obtains one Dimension wave beam formed matrix, using the first dimension wave beam formed matrix of obtaining as this group terminal corresponding Dimension wave beam formed matrix.

It is preferred that processor 501 specifically for:

Carry out uplink channel estimation according to the pilot signal that terminal sends, obtain uplink channel information；Based on upper Row channel and the reciprocity of down channel, obtain under described terminal according to the uplink channel information of described terminal Row channel information；According to the descending channel information of the terminal in same group, determine that this group terminal is corresponding first Dimension wave beam formed matrix.

It is preferred that all antenna elements of the network equipment are divided into K group, K is the integer more than or equal to 1；

Processor 501 specifically for:

It is preferred that processor 501 specifically for:

P = V &CircleTimes; W

Or

P = W &CircleTimes; V

Wherein, in Figure 5, bus architecture can include bus and the bridge of any number of interconnection, specifically by The various electrical chains of the memorizer that one or more processors of processor 501 representative and memorizer 503 represent It is connected together.Bus architecture can also be by such as ancillary equipment, manostat and management circuit or the like Other electrical chains various are connected together, and these are all to it is known in the art, therefore, the most no longer enter it Row further describes.EBI provides interface.Transceiver 502 can be multiple element, i.e. includes sending Machine and transceiver, it is provided that for the unit communicated with other devices various over a transmission medium.Processor 501 Being responsible for bus architecture and common process, memorizer 503 can store processor 501 and perform operation Time the data that used.

It can be seen from the above: in the embodiment of the present invention, the network equipment is according to the first dimensional properties of terminal Terminal is grouped, determines the first dimension wave beam formed matrix that often group terminal is corresponding, so, each end End packet has same or analogous first dimensional properties.Use the first dimension ripple that often group terminal is corresponding respectively Bundle figuration matrix, sends after the second dimension pilot signal often organized corresponding to terminal carries out wave beam forming；Net Network equipment receives the terminal the second dimensional channel status information according to described second dimension pilot signal feedback, and It is grouped corresponding first belonging to the second dimensional channel status information according to described terminal and described terminal Dimension wave beam formed matrix, and then determine the three dimensional channel status information of described terminal.Owing to often organizing terminal tool There is same or analogous first dimensional properties, use the first corresponding dimension wave beam forming square for often organizing terminal Battle array carries out wave beam forming to the second dimension pilot signal, on the one hand can obtain the three dimensional channel shape of terminal feedback State information, on the other hand owing to using the first dimension wave beam formed matrix to being sent to have phase targetedly Second dimension pilot signal of the terminal of same or similar first dimensional properties carries out wave beam forming, so that three The determination of dimension status information is more accurate.

Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method or computer journey Sequence product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or combine software Form with the embodiment of hardware aspect.And, the present invention can use and wherein include meter one or more The computer-usable storage medium of calculation machine usable program code (include but not limited to disk memory, CD-ROM, optical memory etc.) form of the upper computer program implemented.

The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and / or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/ Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.

These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart The function specified in flow process and/or one square frame of block diagram or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, makes Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.

Although preferred embodiments of the present invention have been described, but those skilled in the art once know base This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.

Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.

Claims

1. a three dimensional channel status information determines method, it is characterised in that including:

2. the method for claim 1, it is characterised in that the described network equipment is according to the first of terminal Terminal is grouped by dimensional properties, including:

3. the method for claim 1, it is characterised in that the described network equipment is according to the first of terminal Terminal is grouped by dimensional properties, including:

4. method as claimed in claim 3, it is characterised in that the described network equipment is according to the first of terminal Terminal is grouped by dimensional properties, including:

5. the method for claim 1, it is characterised in that the described network equipment is according to the of terminal Terminal is grouped by dimension characteristic, including:

6. the method as according to any one of claim 3 to 5, it is characterised in that the described network equipment is true The first dimension wave beam formed matrix that fixed often group terminal is corresponding, including:

7. the method as according to any one of claim 1 to 5, it is characterised in that the described network equipment is true The first dimension wave beam formed matrix that fixed often group terminal is corresponding, including:

8. the method as according to any one of claim 1 to 5, it is characterised in that the described network equipment All antenna elements are divided into K group, and K is the integer more than or equal to 1；

9. the method for claim 1, it is characterised in that described the second dimension according to described terminal The first dimension wave beam formed matrix corresponding to being grouped belonging to channel condition information and described terminal, determines institute State the three dimensional channel status information of terminal, including:

P = V &CircleTimes; W

Or

P = W &CircleTimes; V

10. the method as according to any one of claim 1 to 5, it is characterised in that described first dimension is Vertical dimensions, described second dimension is horizontal dimensions；Or, described first dimension is horizontal dimensions, described Second dimension is vertical dimensions.

11. 1 kinds of network equipments, it is characterised in that including:

12. network equipments as claimed in claim 11, it is characterised in that described grouping module specifically for:

13. network equipments as claimed in claim 11, it is characterised in that described grouping module specifically for:

14. network equipments as claimed in claim 13, it is characterised in that described grouping module specifically for:

Or, described grouping module specifically for:

15. network equipments as claimed in claim 11, it is characterised in that described grouping module is specifically used In:

16. network equipments as according to any one of claim 13 to 15, it is characterised in that described determine Wave beam formed matrix module specifically for:

Or, described determine wave beam formed matrix module specifically for:

17. network equipments as according to any one of claim 11 to 15, it is characterised in that described determine Wave beam formed matrix module specifically for:

18. network equipments as according to any one of claim 11 to 15, it is characterised in that described network All antenna elements of equipment are divided into K group, and K is the integer more than or equal to 1；

Described sending module specifically for:

19. network equipments as claimed in claim 11, it is characterised in that described determine channel condition information Module specifically for:

P = V &CircleTimes; W

Or

P = W &CircleTimes; V

20. network equipments as according to any one of claim 11 to 15, it is characterised in that described first Dimension is vertical dimensions, and described second dimension is horizontal dimensions；Or, described first dimension is horizontal dimensions, Described second dimension is vertical dimensions.