CN105871504A - Method and apparatus for generating three-dimensional channel quality indicator of channel - Google Patents

Abstract

The invention provides a method and apparatus for generating the three-dimensional channel quality indicator of a channel. The method includes the following steps that: the product of a first channel quality indicator of the channel in a first direction and a second channel quality indicator of the channel in a second direction which is different from the first direction is obtained; and the three-dimensional channel quality indicator of the channel is determined based on the product of the first channel quality indicator and the second channel quality indicator. With the method and apparatus provided by the embodiments of the invention adopted, the three-dimensional channel quality indicator can be generated in 3DMIMO communication based on the two-dimensional channel quality indicators (CQI), and the performance of a communication system can be improved, and throughput can be increased.

Description

For producing the method and apparatus that the three dimensional channel quality of channel indicates

Technical field

The present invention relates to three-dimensional multiple-input and multiple-output (3D MIMO) communication, particularly relate to one and exist Three-dimensional multiple-input and multiple-output (3D MIMO) communication produces the three dimensional channel quality instruction of channel (CQI) method and apparatus.

Background technology

Three-dimensional multiple-input and multiple-output (3D MIMO) communication can be by allowing wireless beam with three sides To the reception antenna arriving subscriber equipment thus more power is focused on this reception antenna And avoid the impact on other reception antenna.For this reason, it may be necessary to preferably user device channel state refers to Show that the scheme that (CSI) feedback and high-level signaling strengthen supports three-dimensional multiple-input and multiple-output (3D MIMO) communication.Only subscriber equipment in time by CSI feedback to evolved base station, evolved base Stand (eNB) could adjust according to the CSI of this feedback and send code check, the prelisting of transmission antenna matrix Code etc..

As channel status instruction (CSI) one, evolved base station it is to be appreciated that feedback letter Road quality instruction (CQI) sends code check etc. to adjust transmitting terminal.But, in conventional art, Subscriber equipment can only indicate reference signal from the channel status between evolved base station and subscriber equipment (CSI-RS) thread obtains the channel of channel quality instruction (CQI), i.e. horizontal direction of two dimension The channel quality instruction of quality instruction and vertical direction.How still nobody proposed from two dimension CQI obtains the scheme of the channel quality instruction of three-dimensional.The channel quality of horizontal direction is indicated and The channel quality instruction smaller of vertical direction, as three-dimensional channel instruction instruction, is one and compares Conservative scheme, but loss of throughput can be caused.

Summary of the invention

The present invention solve one problematically, propose one can 3D MIMO communicate in from The CQI of two dimension produces the scheme of three dimensional channel quality instruction.

According to one embodiment of present invention, it is provided that a kind of for leading at three-dimensional multiple-input and multiple-output The method producing the three dimensional channel quality instruction of channel in letter, including: obtain the first of described channel The second letter that the first channel quality on direction indicates and is different from the second direction of first direction Amassing of road quality instruction；Amass, really based on what the first channel quality instruction and second channel quality indicated The described three dimensional channel quality instruction of fixed described channel.

According to another embodiment of the invention, it is provided that a kind of at three-dimensional multiple-input and multiple-output Communication produces the device of the three dimensional channel quality instruction of channel, including: the first acquiring unit, quilt The first channel quality being configured to obtain on the first direction of described channel indicates and is different from first Amassing of second channel quality instruction in the second direction in direction；First determines unit, is configured to Based on amassing that the first channel quality instruction and second channel quality indicate, determine the described of described channel Three dimensional channel quality indicates.

Being proved by emulation, in 3D MIMO communicates, the CQI of the three-dimensional of channel is the most permissible The long-pending of CQI on first direction based on channel and the CQI in second direction is approximated well, This approximation can have and connect compared with the 3D MIMO communication system with perfect three-dimensional CQI Near good performance.

Accompanying drawing explanation

The present invention is will be more fully understood, wherein by the detailed description and the accompanying drawings forth below Identical unit is indicated by the same numbers, and accompanying drawing is merely possible to illustrate to be given, therefore It is not intended to limit the invention, and wherein:

Fig. 1 show according to an exemplary embodiment at three-dimensional multiple input multiple output communications The flow chart of the method for the three dimensional channel quality instruction of middle generation channel.

Fig. 2 shows and determines described the three of described channel in the method according to an exemplary embodiment One exemplary process diagram of the step of dimension channel quality instruction.

Fig. 3 shows and obtains the first channel quality instruction in the method according to an exemplary embodiment An exemplary process diagram with the long-pending step of second channel quality instruction.

Fig. 4 shows and obtains the first channel quality instruction in the method according to an exemplary embodiment Another exemplary process diagram with the long-pending step of second channel quality instruction.

Fig. 5 shows the compensating factor α obtaining channel in the method according to an exemplary embodiment_iAn exemplary process diagram of step.

Fig. 6 shows the interaction of the base station according to an exemplary embodiment and subscriber equipment Figure.

Fig. 7 shows the interaction of the base station according to another exemplary embodiment and subscriber equipment Figure.

Fig. 8 shows the interaction of the base station according to another exemplary embodiment and subscriber equipment Figure.

Fig. 9 shows the interaction of the base station according to another exemplary embodiment and subscriber equipment Figure.

Figure 10 show according to an exemplary embodiment for leading at three-dimensional multiple-input and multiple-output Letter produces the block diagram of the device of the three dimensional channel quality instruction of channel.

Figure 11 shows that first according to an exemplary embodiment determines the block diagram of unit.

It should be mentioned that, what these accompanying drawing meant for illustration were utilized in some of the exemplary embodiments The general characteristic of method, structure and/or material, and the written description being provided behind is made supplementary. But these accompanying drawings are not necessarily drawn to scale and are likely not to have and accurately reflect any given reality Execute accurate structure or the Performance Characteristics of example, and be not interpreted as definition or limit by example Numerical value that property embodiment is contained or the scope of attribute.That be similar to or complete phase is used in each width figure Same reference is to show that be similar to or identical unit or the existence of feature.

Detailed description of the invention

Although exemplary embodiment can have multiple amendment and alternative forms, but in the accompanying drawings to lift Some embodiments that the mode of example is shown in which, and will be described in detail herein. It should be understood, however, that be not intended exemplary embodiment is restricted to disclosed concrete shape Formula, on the contrary, exemplary embodiment be intended to contain fall within the scope of the appended claims all modifications, Equivalents and alternative.Identical reference refers to identical in the description of each width figure all the time Unit.

It should be mentioned that, some exemplary realities before being discussed in greater detail exemplary embodiment Execute process or method that example is described as describing as flow chart.Although operations is retouched by flow chart State into the process of order, but many of which operation can be by concurrently, concomitantly or simultaneously Implement.Additionally, the order of operations can be rearranged.The most described place Reason can be terminated, it is also possible to have the additional step being not included in accompanying drawing.Described process Can correspond to method, function, code, subroutine, subprogram etc..

Term used herein above " wireless device " or " equipment " can be considered and the following Synonym and the most sometimes can be referred to as the following: client, subscriber equipment, movement Stand, mobile subscriber, mobile terminal, subscriber, user, distant station, access terminal, receptor, shifting Moving cell etc., and the long-distance user of Radio Resource in cordless communication network can be described.

Similarly, term used herein above " base station " can be considered with the following synonym also And the most sometimes can be referred to as the following: B node, evolved B node, eNodeB, Base transceiver stations (BTS), RNC etc., and can be described in and can cross over multiple technology generation The cordless communication network in generation communicates with mobile terminal and the transceiver of provided Radio Resource.Remove Outside the ability of the method that enforcement is discussed herein, base station discussed herein can have and pass All functions that the well-known base station of system is associated.

Method (some of them are illustrated by flow chart) discussed hereafter can pass through hardware, soft Part, firmware, middleware, microcode, hardware description language or its combination in any are implemented.When When implementing by software, firmware, middleware or microcode, in order to implement the program generation of necessary task Code or code segment can be stored in machine or computer-readable medium (such as storage medium). (one or more) processor can implement the task of necessity.

Concrete structure disclosed herein and function detail are the most representational, and are for retouching State the purpose of the exemplary embodiment of the present invention.But the present invention can be come by many alternative forms Implement, and be not interpreted as being limited only by the embodiments set forth herein.

Although it should be appreciated that here may have been used term " first ", " second " etc. Etc. describing unit, but these unit should not be limited by these terms.Use these arts Language is only used to make a distinction a unit with another unit.For example, without departing substantially from In the case of the scope of exemplary embodiment, first module can be referred to as second unit, and class As second unit can be referred to as first module.Term "and/or" used herein above includes it In any and all combination of one or more listed associated item.

It should be appreciated that when a unit is referred to as " connection " or " coupled " to another unit Time, it can be connected or coupled to another unit described, or can there is temporary location. On the other hand, it is referred to as " being directly connected " or " directly coupled " to another unit when a unit Time, the most there is not temporary location.Should explain in a comparable manner be used for describe unit it Between relation other words (such as " and be in ... between " compared to " and be directly in ... between ", " with ... neighbouring " compared to " with ... it is directly adjacent to " etc.).

Term used herein above is only used to describe specific embodiment and be not intended to limit example Property embodiment.Unless the context clearly dictates otherwise, singulative " the most used herein above Individual ", " one " also attempt to include plural number.It is to be further understood that term used herein above " include " and/or " comprising " specify stated feature, integer, step, operation, unit and/ Or the existence of assembly, and do not preclude the presence or addition of other features one or more, integer, step, Operation, unit, assembly and/or a combination thereof.

It should further be mentioned that in some replace implementation, the function/action being previously mentioned is permissible Occur according to being different from accompanying drawing the order indicated.For example, depend on involved function/ Action, the two width figures in succession illustrated can essentially substantially simultaneously perform or sometimes can be according to Contrary order performs.

Unless otherwise defined, all terms the most used herein (including technology and scientific terminology) All there is identical the containing being generally understood with the technical staff in exemplary embodiment art Justice.It is to be further understood that unless be here explicitly defined, the most such as normally used Those terms defined in dictionary should be construed as having with it in the context of association area The consistent implication of implication, and should not solve according to Utopian or the most formal meaning Release.

Discussing according to an embodiment of the invention at three-dimensional multiple-input and multiple-output (3D MIMO) communication in produce channel three dimensional channel quality instruction (CQI) method and apparatus it Before, first demonstration can indicate the long-pending of (CQI) to determine three dimensional channel matter based on two dimensional channel quality The principle of amount instruction (CQI).

Assume that the subscriber equipment being in 3D MIMO mode can be between base station and subscriber equipment Channel status instruction reference signal (CSI-RS) process obtains M at subscriber equipment is connect The channel status of the two dimension receiving the channel corresponding to the i-th reception antenna in the array of antenna indicates (CSI), i.e. the CSI of horizontal direction (is expressed as h_i,h) and the CSI of vertical direction (be expressed as h_i,v).Known emulation proves, the three-dimensional CSI for described i-th reception antenna (is expressed as h_i,3D), Its emulationH can be expressed as_i,hWith h_i,vKronecker product, i.e.

$h_{i,3D}\≈{\hat{h}}_{i,3D}=h_{i,h}\⊗h_{i,v}$ Formula 1

Simulation result based on preferable CQI shows, the performance loss caused due to this approximation is to connect It is subject to.

It addition, the subscriber equipment being in 3D MIMO mode can be between base station and subscriber equipment Channel status instruction reference signal (CSI-RS) process in obtain for described i-th reception antenna PMI (the table of pre-coding matrix instruction (PMI), i.e. horizontal direction of the two dimension of corresponding channel It is shown as W_i,h) and the PMI of vertical direction (be expressed as W_i,v).Sky is received for described i-th The three-dimensional PMI of line (is expressed as W_i,3D), it can be expressed as W_i,hWith W_i,vKronecker product, I.e.

$W_{i,3D}=W_{i,h}\⊗W_{i,v}$ Formula 2

Accordingly, as by the transmission channel between transmitting terminal precoder and transmitting terminal and receiving terminal The generalized channel response of the generalized channel being combined

$\begin{array}{c}{\hat{h}}_{i,3D}{W}_{i,3D}=(h_{i,h}\⊗h_{i,v})(W_{i,h}\⊗W_{i,v})\\ =\left(h_{i,h}{W}_{i,h}\right)\⊗\left(h_{i,v}{W}_{i,v}\right)\end{array}$ Formula 3

General definition according to channel quality instruction (CQI) (receiving terminal receive the signal of signal with Interference plus noise ratio), the three dimensional channel for the channel corresponding to the i-th reception antenna can be obtained Quality indicator (CQI)_i,3D:

Formula 4

When the subscriber equipment of receiving terminal has M reception antenna, the base station end of 3D MIMO communication Should there is M transmitting antenna mutually.The signal that each transmitting antenna of M transmitting antenna is launched exists The i-th reception antenna of the subscriber equipment of receiving terminal has a h_i,3D.This M h_i,3DIt is combined in one Rise and become matrix H_i,3D。W_i,3DIt it is the matrix of corresponding pre-coding matrix instruction.And H_j,3DIt is then The signal that each transmitting antenna of M transmitting antenna is launched is in the jth of the subscriber equipment of receiving terminal The h that reception antenna produces_j,3DThe matrix being combined.W_j,3DIt it is the instruction of corresponding pre-coding matrix Matrix.P_N,i,3DIt it is the in-band noise merit for the three dimensional channel corresponding to described i-th reception antenna Rate.‖ ‖ represents norm.

The formula of linear algebra

‖ HW ‖=tr (HWW^HH^H)

Formula 5

Wherein W, H are two matrixes, W^H、H^HFor the associate matrix of W, H, tr () table Show mark.

By formula 2,3,5, draw

$\begin{array}{c}\left|\right|H_{i,3D}{W}_{i,3D}\left|\right|\≈\left|\right|\left(H_{i,h}{W}_{i,h}\right)\⊗\left(H_{i,v}{W}_{i,v}\right)\left|\right|\\ =\mathrm{tr}\left(\right[\left(H_{i,h}{W}_{i,h}\right)\⊗\left(H_{i,v}{W}_{i,v}\right)\left]\right[\left(H_{i,h}{W}_{i,h}\right)\⊗\left(H_{i,v}{W}_{i,v}\right){]}^H)\\ =\mathrm{tr}\left(\right[\left(H_{i,h}{W}_{i,h}\right)\⊗\left(H_{i,v}{W}_{i,v}\right)\left]\right[{\left(H_{i,h}{W}_{i,h}\right)}^H\⊗{\left(H_{i,v}{W}_{i,v}\right)}^H)\\ =\mathrm{tr}\left(\right[H_{i,h}{W}_{i,h}){\left(H_{i,h}{W}_{i,h}\right)}^H]\⊗[\left(H_{i,v}{W}_{i,v}\right)\⊗{\left(H_{i,v}{W}_{i,v}\right)}^H\left]\right)\\ =\mathrm{tr}\left(\left(H_{i,h}{W}_{i,h}\right){\left(H_{i,h}{W}_{i,h}\right)}^H\right)\mathrm{tr}\left(\left(H_{i,v}{W}_{i,v}\right){\left(H_{i,v}{W}_{i,v}\right)}^H\right)\\ =P_{i,h}{P}_{i,v}\end{array}$

Formula 6

Wherein, H_i,hIt is that the signal of each transmitting antenna transmitting of M transmitting antenna of transmitting terminal is in reception The h of the i-th reception antenna of the subscriber equipment of end_i,hThe matrix being combined.W_i,hIt is corresponding pre- The matrix of encoder matrix instruction.H_i,vIt it is each transmitting antenna transmitting of M transmitting antenna of transmitting terminal Signal at the h of the i-th reception antenna of the subscriber equipment of receiving terminal_i,vThe matrix being combined. W_i,vIt it is the matrix of corresponding pre-coding matrix instruction.

P_i,hIt is that the level of channel corresponding to i-th reception antenna is to equivalent channel power

P_{I, h}≡tr((H_{I, h}W_{I, h})(H_{I, h}W_{I, h})^H)

Formula 7

P_{I, v}It is the vertical to equivalent channel power of channel corresponding to i-th reception antenna,

P_{I, v}≡tr((H_{I, v}W_{I, v})(H_{I, v}W_{I, v})^H)

Formula 8

In the derivation of above-mentioned formula 6, use Wherein A, B are matrix.

Formula 6 is substituted into formula 4, obtains

Formula 9

P_j,hIt is that the level of channel corresponding to jth reception antenna is to equivalent channel power, P_j,vIt is Channel corresponding to j reception antenna vertical to equivalent channel power, its formula copy formula 7, 8。

Further, since there is formula

Formula 10

Formula 11

Wherein CQI_i,hIt is horizontal direction CQI of channel corresponding to i-th reception antenna, CQI_i,v It is the vertical CQI of channel corresponding to i-th reception antenna.P_N,i,hIt is for described i-th The level of the channel corresponding to individual reception antenna is to in-band noise power.P_N,i,vIt is for described i-th Channel corresponding to individual reception antenna vertical to in-band noise power.

Due to above-mentioned formula 9,10,11,

Formula 12

Wherein

Formula 13

Owing in channel, level to noise and is vertically uniformly distributed, then in band to noise

P_N,i,h=P_N,i,v≡P_N,i,2D

Formula 14

Wherein P_N,i,2DIt is to make an uproar in the band for the two dimensional channel corresponding to described i-th reception antenna Acoustical power.

As such, it is possible to obtain

P_N,i,3D=P_N,i,h P_N,i,v≡P² _N,i,2DFormula 15

Substituted into formula 13, obtained

Formula 16

Based on formula 12 and 16,3 inferences can be obtained:

Inference 1: due to α_iMore than or equal to 0, owing to formula 12 understands CQI_i,3DIt is more than or equal to CQI_i,h·CQI_i,v。

Inference 2: in the channel that noise is the biggest, the P in formula 16² _N,i,2DFormula 16 can be much larger than Molecule, sum term in denominator, cause α_iLevel off to 1, now CQI_i,3DLevel off to 2CQI_i,h·CQI_i,v。

Inference 3: more generally is in the case of known to the interference of each channel and noise power, permissible The α of a certain channel is obtained by formula 16_i, and then substitute into formula 12 obtain for i-th receive sky The three dimensional channel quality indicator (CQI) of the channel corresponding to line_i,3D。

Based on above-mentioned 3 inferences, it can be deduced that three kinds of described three dimensional channel quality determining described channel The scheme of instruction:

Scheme 1: a little estimate that three-dimensional CQI is not significantly affected by 3D MIMO due to somewhat conservative The performance of communication, therefore can use CQI_i,h·CQI_i,vEstimate three dimensional channel quality indicator (CQI)_i,3D, Or use CQI_i,h(dB)+CQI_i,v(dB) three dimensional channel quality indicator (CQI) is estimated_i,3D(dB)。

Scheme 2: under noise accounts for leading channel scenario, can use 2CQI_i,h·CQI_i,vEstimate Three dimensional channel quality indicator (CQI)_i,3D, or use CQI_i,h(dB)+CQI_i,v(dB)+3 (dB) estimate Meter three dimensional channel quality indicator (CQI)_i,3D(dB)。

Scheme 3: under more generally scene, can be known to the interference of each channel and noise power In the case of, the α of channel first can be obtained with formula 16_i, then use CQI_i,h·CQI_i,v(1+α_i) Estimate three dimensional channel quality indicator (CQI)_i,3D, or use CQI_i,h(dB)+CQI_i,v(dB) +10log₁₀α_j(dB) three dimensional channel quality indicator (CQI) is estimated_i,3D(dB)。

Fig. 1 is according to an embodiment of the invention at three-dimensional multiple-input and multiple-output (3D MIMO) communication produce the method 1 of three dimensional channel quality instruction (CQI) of channel.The method 1 can be realized by subscriber equipment, below in conjunction with as described in Fig. 6, it is also possible to (such as drilled by base station Enter type base station) realize, below in conjunction with as described in Fig. 7-9.

This three-dimensional letter being used for producing channel in three-dimensional multiple-input and multiple-output (3D MIMO) communication The method 1 in road quality instruction (CQI) may be used for three-dimensional multiple-input and multiple-output (3D MIMO) Communication make base station understand the CQI of three dimensional channel between base station and subscriber equipment in time, in order in time It is transmitted the adjustment of code check.Such as, when CQI is bigger, it is believed that now channel quality is preferable, Transmission code rate can be increased on this channel；When CQI is smaller, it is believed that now channel quality is relatively Difference, can reduce transmission code rate on this channel.It addition, this is used at three-dimensional multiple-input and multiple-output The method 1 of three dimensional channel quality instruction (CQI) producing channel in (3D MIMO) communication can Carry out by base station or subscriber equipment in three-dimensional multiple-input and multiple-output (3D MIMO) communication Channel quality is tested.Having multiple reception antenna at receiving terminal subscriber equipment, each reception antenna is corresponding In a channel.Base station or subscriber equipment can assess each reception antenna according to the CQI of this generation The quality of corresponding channel quality, etc..

MIMO refers to allow multiple antenna to send simultaneously and receive multiple spatial flow, thus suppresses letter Road decline, the technology that useful signal is strengthened.3D MIMO refers to, existing not changing Under conditions of antenna size, each vertical antenna element can be divided into multiple a period of time, thus Develop the technology of the Spatial Dimension of another vertical direction of MIMO.3DMIMO is by MIMO Technology pushes a higher developmental stage to, has opened wider for the lifting of LTE transmission technical performance Wealthy space so that reduce presence of intercell interference further, raising throughput of system becomes with spectrum efficiency For possible.

CQI (CQI) is the measurement standard of the communication quality of wireless channel, and it can lead to Cross property data, such as, signal to noise ratio (SNR), Signal to Interference plus Noise Ratio (SINR), letter Number with the performance Index Calculation of the channels such as noise distortion ratio (SNDR) out.Generally, high level CQI represents that a channel has high quality, and vice versa.

In communicating due to 3D MIMO, receiving terminal subscriber equipment has multiple reception antenna, Mei Gejie Receiving antenna and both correspond to a channel, this is used for leading to three-dimensional multiple-input and multiple-output (3D MIMO) It is targeted that the method 1 of three dimensional channel quality instruction (CQI) producing channel in letter produces CQI Channel refers to the channel corresponding to a reception antenna in the plurality of reception antenna.

In a step 11, obtain on the first direction of described channel first channel quality instruction and Amassing of the second channel quality instruction being different from the second direction of first direction.

In one embodiment, first direction is horizontally oriented, and second direction is vertical direction.Will CQI corresponding to the first direction of the channel of the i-th reception antenna is expressed as CQI_i,h, would correspond to The CQI of the second direction of the channel of the i-th reception antenna is expressed as CQI_i,v, the CQI of first direction It is CQI with the product representation of the CQI of second direction_i,h·CQI_i,v。

Owing to this is for producing the three of channel in three-dimensional multiple-input and multiple-output (3D MIMO) communication The method 1 of dimension channel quality instruction (CQI) can be realized by base station, it is also possible to by subscriber equipment Realizing, correspondingly, in the case of method 1 is realized by base station, step 11 is realized by base station, In the case of method 1 is realized by subscriber equipment, step 11 is realized by subscriber equipment.

In the case of step 11 is realized by subscriber equipment, as it is shown on figure 3, subscriber equipment performs Step 111 and step 112.

In step 111, reference signal is indicated from the channel status of the described channel received (CSI-RS) thread extracts described first channel quality indicator (CQI)_i,hIndicate with second channel quality CQI_i,v。

CSI-RS refers to a signaling-information in MIMO communication between base station and subscriber equipment, it It is a reference signal, the channel status of channel can be obtained by it.CSI-RS thread is base station And between subscriber equipment with the thread of the intercorrelation of CSI-RS.By this thread, it is possible to extract Level to vertically to channel quality instruction (CQI), pre-coding matrix instruction (PMI) etc..

In step 112, described first channel quality instruction and the instruction of second channel quality are calculated Long-pending CQI_i,h·CQI_i,v。

Fig. 6 shows the most mutual of subscriber equipment and base station when step 11 is realized by subscriber equipment Figure, is discussed in greater detail below in conjunction with Fig. 6.

In the case of step 11 is realized by base station, in one embodiment, as shown in Figure 4, Base station performs step 111 ' and 112.

In step 111 ' in, receive described first channel quality indicator (CQI) from subscriber equipment_i,hWith Two channel quality indicator (CQI)s_i,v。

It is to say, the first channel quality indicator (CQI)_i,hWith second channel quality indicator (CQI)_i,vIt is Extracted by the similar method with previous step 111 by subscriber equipment, then set by user Preparation gives base station.

In step 112, base station calculates described first channel quality instruction and second channel quality refers to The long-pending CQI shown_i,h·CQI_i,v。

Fig. 7 shows subscriber equipment and the detailed interaction figure of base station in this case, below in conjunction with Fig. 7 is discussed in greater detail.

In the case of step 11 is realized by base station, in another embodiment, step 11 is wrapped Include and directly receive described first channel quality instruction and amassing that second channel quality indicates CQI_i,h·CQI_i,v。

It is to say, the first channel quality indicator (CQI)_i,hWith second channel quality indicator (CQI)_i,vIt is Extracted by the similar method with previous step 111 by subscriber equipment, then subscriber equipment Both are multiplied, obtain the first channel quality instruction long-pending with what second channel quality indicated CQI_i,h·CQI_{I, v,}, and this long-pending is sent to base station.

Fig. 8 shows subscriber equipment and the detailed interaction figure of base station in this case, below in conjunction with Fig. 8 is discussed in greater detail.

In step 12, based on amassing that the first channel quality instruction and second channel quality indicate, determine The described three dimensional channel quality instruction of described channel.

As a kind of detailed description of the invention of step 12, can be by described first channel quality instruction Long-pending CQI with the instruction of second channel quality_i,h·CQI_i,v, it is determined directly as described the three of described channel Dimension channel quality indicator (CQI)_i,3D.This corresponds to scheme 1 above-mentioned.It is based on somewhat protecting Keep a little estimation CQI_i,3DIt is not significantly affected by the principle of the performance of 3D MIMO communication.If Represent with dB, can be by CQI_i,h(dB)+CQI_i,v(dB) it is determined directly as CQI_i,3DUse dB table The result shown.

As the another kind of detailed description of the invention of step 12, described first channel quality can be referred to Show CQI_i,hWith second channel quality indicator (CQI)_i,v, long-pending 2 times be defined as the described of described channel Three dimensional channel quality indicator (CQI)_i,3D.This corresponds to scheme 2 above-mentioned.It is applicable to noise Account for leading channel scenario.If represented with dB, can be by CQI_i,h(dB)+CQI_i,v(dB)+3 (dB) it is defined as CQI_i,3DThe result represented with dB.

As the another kind of detailed description of the invention of step 12, as in figure 2 it is shown, step 12 includes step Rapid 121 and step 122.

In step 121, obtain the i-th reception antenna in communicating corresponding to described 3D MIMO The compensating factor α of channel_i(121), wherein

That is, equation 16 above, reception antenna sum, P during wherein M is described 3D MIMO communication_j,h Represent the equivalent channel power in a first direction of the channel corresponding to jth reception antenna, P_j,vRepresent Corresponding to the channel equivalent channel power in a second direction of jth reception antenna, P_N,i,2DIt is right to represent Should be in the two dimensional equivalent noise power of the channel of the i-th reception antenna, it receives equal to corresponding to i-th (reception antenna is first for the channel of antenna noise equivalent power in a first direction or in second direction Noise equivalent power on direction or in second direction is the most equal).

Owing to the method 1 of the embodiment of the present invention can be realized by base station or subscriber equipment, therefore, exist In the case of method 1 is realized by subscriber equipment, step 121 is realized by subscriber equipment, in method 1 In the case of being realized by base station, step 121 is realized by base station.

In the case of step 121 is realized by subscriber equipment, as it is shown in figure 5, step 121 includes Step 1211 and step 1212.

In step 1211, obtain corresponding to jth reception antenna channel in a first direction etc. Effect channel power P_j,h, corresponding to the channel equivalent channel merit in a second direction of jth reception antenna Rate P_j,v, corresponding to two dimensional equivalent noise power P of the channel of the i-th reception antenna_N,i,2D, wherein J=1 ..., M, and j ≠ i, M is reception antenna sum in described 3D MIMO communication.

Such as, subscriber equipment can be with periodic measurement or measure in real time the channel that its each reception antenna is corresponding Equivalent channel power and two dimensional equivalent noise power.It is to say, the step for enforcement depend on Rely, in subscriber equipment, its channel status to be had enough understandings.Without enough understandings, to the greatest extent Amount uses aforementioned by CQI_i,h·CQI_i,v, or 2CQI_i,h·CQI_i,v, it is defined as the described three-dimensional of channel Channel quality indicator (CQI)_1,3DMode.

In step 1212, calculated in communicating corresponding to described 3D MIMO the by below equation The compensating factor α of the channel of i reception antenna_i:

That is, formula 16.

Fig. 6 shows subscriber equipment and the detailed interaction figure of base station in this case, below in conjunction with Fig. 6 is discussed in greater detail.

In the case of step 121 is realized by base station, in some cases, base station is also required to perform Step 1211 and 1212 in Fig. 5, as shown in Figure 7 and Figure 8, in yet some other cases, base Stand and only need to receive corresponding to the letter of the i-th reception antenna described 3D MIMO communication from subscriber equipment The compensating factor α in road_i, as shown in Figure 9.

Also perform in base station in Fig. 5 in the case of step 1211 and 1212, due in step 1211 Middle needs obtains the equivalent channel power in a first direction of the channel corresponding to jth reception antenna P_j,h, corresponding to the channel equivalent channel power P in a second direction of jth reception antenna_j,v, right Should be in two dimensional equivalent noise power P of the channel of the i-th reception antenna_N,i,2D, base station needs periodic measurement Or the equivalent channel merit of channel corresponding to each reception antenna of measuring in real time each subscriber equipment of its subordinate Rate and two dimensional equivalent noise power.It addition, this information can also be by the cooperation base station of this base station Or interference base station is shared, channel disturbance that cooperation base station or interference base station are measured and noise measurement Obtain.

Fig. 7, the 8 detailed interaction figures showing subscriber equipment and base station in this case, below In conjunction with Fig. 7,8 it is discussed in greater detail.

In base station, oneself does not calculate compensating factor α_iBut receive compensating factor α from subscriber equipment_i's In the case of, subscriber equipment utilizes the method shown in Fig. 5 to calculate compensating factor α_iAnd be fed back to Base station, base station only need to receive this compensating factor α_i。

Fig. 9 shows subscriber equipment and the detailed interaction figure of base station in this case, below in conjunction with Fig. 9 is discussed in greater detail.

In step 122, by CQI_i,h·CQI_i,v·(1+α_i) be defined as described corresponding to i-th The described three dimensional channel quality instruction of the channel of reception antenna, wherein said first channel quality instruction For CQI_i,h, described second channel quality is designated as CQI_i,v。

Owing to the method 1 of the embodiment of the present invention can be realized by base station or subscriber equipment, therefore, exist In the case of method 1 is realized by subscriber equipment, step 122 is realized by subscriber equipment, such as Fig. 6 institute Show；In the case of method 1 is realized by base station, step 122 is realized by base station, such as Fig. 7-9 institute Show.Combining in the detailed description of Fig. 6-9 below, this point can be more evident.

This corresponds to scheme 3 above-mentioned.It is applicable to general scene.If represented with dB, Can be by CQI_i,h(dB)+CQI_i,v(dB)+10log₁₀α_i(dB) it is defined as CQI_i,3DRepresent with dB Result.

Fig. 6 shows the interaction of the base station according to an exemplary embodiment and subscriber equipment Figure.It corresponding to being realized the situation of the method 1 of the embodiment of the present invention by subscriber equipment.

In step 701, base station 201 sends CSI-RS to subscriber equipment 202, set up base station and CSI-RS thread between subscriber equipment.

In step 111, subscriber equipment 202 extracts from this CSI-RS thread and receives for i-th Described first channel quality indicator (CQI) of the channel corresponding to antenna_i,hIndicate with second channel quality CQI_i,v。

In step 112, subscriber equipment 202 calculates described first channel quality indicator (CQI)_i,hWith Second channel quality indicator (CQI)_i,vLong-pending CQI_i,h·CQI_i,v。

In step 1211, subscriber equipment 202 obtains the channel corresponding to jth reception antenna Equivalent channel power P on one direction_j,h, corresponding to jth reception antenna channel in a second direction Equivalent channel power P_j,v, corresponding to the two dimensional equivalent noise power of the channel of the i-th reception antenna P_N,i,2D, wherein j=1 ..., M, and j ≠ i, M is that in described 3D MIMO communication, reception antenna is total Number.

In step 1212, subscriber equipment 202 is calculated corresponding to described 3D by formula 16 The compensating factor α of the channel of the i-th reception antenna in MIMO communication_i。

In step 122, subscriber equipment 202 is by CQI_i,h·CQI_i,v·(1+α_i) it is defined as institute State the described three dimensional channel quality indicator (CQI) of channel corresponding to the i-th reception antenna_i,3D。

In step 720, the CQI that subscriber equipment 202 will determine_i,3DFeed back to base station.

Fig. 7 shows the interaction of the base station according to another exemplary embodiment and subscriber equipment Figure.It corresponding to being realized a kind of situation of the method 1 of the embodiment of the present invention by base station.

In step 701, base station 201 sends CSI-RS to subscriber equipment 202, set up base station and CSI-RS thread between subscriber equipment.

In step 111, subscriber equipment 202 extracts from this CSI-RS thread and receives for i-th Described first channel quality indicator (CQI) of the channel corresponding to antenna_i,hIndicate with second channel quality CQI_i,v。

In step 111 ' in, subscriber equipment 202 is by this first channel quality indicator (CQI)_i,hWith second Channel quality indicator (CQI)_i,vFeed back to base station.

In step 112, base station 201 calculates described first channel quality indicator (CQI)_i,hWith second Channel quality indicator (CQI)_i,vLong-pending CQI_i,h·CQI_i,v。

In step 1211, base station 201 obtains the channel corresponding to jth reception antenna in first party Equivalent channel power P upwards_j,h, corresponding to jth reception antenna channel in a second direction etc. Effect channel power P_j,v, corresponding to two dimensional equivalent noise power P of the channel of the i-th reception antenna_N,i,2D, Wherein j=1 ..., M, and j ≠ i, M is reception antenna sum in described 3D MIMO communication.

In step 1212, base station 201 is calculated corresponding to described 3D MIMO by formula 16 The compensating factor α of the channel of the i-th reception antenna in communication_i。

In step 122, base station 201 is by CQI_i,h·CQI_i,v·(1+α_i) be defined as described right Should be in the described three dimensional channel quality indicator (CQI) of the channel of the i-th reception antenna_i,3D。

Fig. 8 shows the interaction of the base station according to another exemplary embodiment and subscriber equipment Figure.It corresponding to being realized the another kind of situation of the method 1 of the embodiment of the present invention by base station.

In step 701, base station 201 sends CSI-RS to subscriber equipment 202, set up base station and CSI-RS thread between subscriber equipment.

In step 111, subscriber equipment 202 extracts from this CSI-RS thread and receives for i-th Described first channel quality indicator (CQI) of the channel corresponding to antenna_i,hIndicate with second channel quality CQI_i,v。

In step 112, subscriber equipment 202 calculates described first channel quality indicator (CQI)_i,hWith Second channel quality indicator (CQI)_i,vLong-pending CQI_i,h·CQI_i,v。

In step 703, the described first channel quality instruction that subscriber equipment 202 will calculate CQI_i,hWith second channel quality indicator (CQI)_i,vLong-pending CQI_i,h·CQI_i,vFeed back to base station 201.

In step 1211, base station 201 obtains the channel corresponding to jth reception antenna in first party Equivalent channel power P upwards_j,h, corresponding to jth reception antenna channel in a second direction etc. Effect channel power P_j,v, corresponding to two dimensional equivalent noise power P of the channel of the i-th reception antenna_N,i,2D, Wherein j=1 ..., M, and j ≠ i, M is reception antenna sum in described 3D MIMO communication.

In step 1212, base station 201 is calculated corresponding to described 3D MIMO by formula 16 The compensating factor α of the channel of the i-th reception antenna in communication_i。

In step 122, base station 201 is by CQI_i,h·CQI_i,v·(1+α_i) be defined as described right Should be in the described three dimensional channel quality indicator (CQI) of the channel of the i-th reception antenna_i,3D。

Fig. 9 shows the interaction of the base station according to another exemplary embodiment and subscriber equipment Figure.It corresponding to being realized the another kind of situation of the method 1 of the embodiment of the present invention by base station.

In step 701, base station 201 sends CSI-RS to subscriber equipment 202, set up base station and CSI-RS thread between subscriber equipment.

In step 111, subscriber equipment 202 extracts from this CSI-RS thread and receives for i-th Described first channel quality indicator (CQI) of the channel corresponding to antenna_i,hIndicate with second channel quality CQI_i,v。

In step 112, subscriber equipment 202 calculates described first channel quality indicator (CQI)_i,hWith Second channel quality indicator (CQI)_i,vLong-pending CQI_i,h·CQI_i,v。

In step 703, the described first channel quality instruction that subscriber equipment 202 will calculate CQI_i,hWith second channel quality indicator (CQI)_i,vLong-pending CQI_i,h·CQI_i,vFeed back to base station 201.

In step 1211, subscriber equipment 202 obtains the channel corresponding to jth reception antenna Equivalent channel power P on one direction_j,h, corresponding to jth reception antenna channel in a second direction Equivalent channel power P_j,v, corresponding to the two dimensional equivalent noise power of the channel of the i-th reception antenna P_N,i,2D, wherein j=1 ..., M, and j ≠ i, M is that in described 3D MIMO communication, reception antenna is total Number.

In step 1212, subscriber equipment 202 is calculated corresponding to described 3D by formula 16 The compensating factor α of the channel of the i-th reception antenna in MIMO communication_i。

In step 704, the compensating factor α that subscriber equipment 202 will calculate_iFeed back to base station 201。

In step 122, base station 201 is by CQI_i,h·CQI_i,v·(1+α_i) be defined as described right Should be in the described three dimensional channel quality indicator (CQI) of the channel of the i-th reception antenna_i,3D。

The interactive form that Fig. 6-9 not limit is likely implemented.Such as, it is also possible to have user Equipment 202 extracts CQI_i,hAnd CQI_i,v, calculate compensating factor α_i, and three is fed back to base station, CQI is calculated by base station_i,h·CQI_i,v, and determined final CQI by base station_i,3DInteractive form.

According to another embodiment of the present invention, as shown in Figure 10, one is additionally provided for three Dimension multiple input multiple output communications produces the device 2 of the three dimensional channel quality instruction of channel, including the One acquiring unit 21 and first determines unit 22.It is described that first acquiring unit 21 is configured to acquisition The first channel quality on the first direction of channel indicates and is different from the second direction of first direction On second channel quality instruction long-pending.First determines that unit 22 is configured to based on the first channel It is long-pending that quality instruction and second channel quality indicate, and determines the described three dimensional channel quality of described channel Instruction.

Alternatively, first direction is horizontally oriented, and second direction is vertical direction.

Alternatively, first determines that unit 22 is configured to: by described first channel quality instruction and The long-pending described three dimensional channel quality instruction being defined as described channel of second channel quality instruction.

Alternatively, first determines that unit 22 is configured to: by described first channel quality instruction and 2 times of long-pending described three dimensional channel quality being defined as described channel of second channel quality instruction refer to Show.

Alternatively, as shown in figure 11, first determines that unit 22 includes second acquisition unit 221 He Second determines unit 222.

Second acquisition unit 221 is configured to obtain corresponding in described 3D MIMO communication i-th The compensating factor α of the channel of reception antenna_i, wherein

Reception antenna sum, P during wherein M is described 3D MIMO communication_j,hRepresent and receive corresponding to jth The channel of antenna equivalent channel power in a first direction, P_j,vRepresent corresponding to jth reception antenna Channel equivalent channel power in a second direction, P_N,i,2DRepresent corresponding to the i-th reception antenna The two dimensional equivalent noise power of channel, it is equal to the channel corresponding to the i-th reception antenna in first party To or second direction on noise equivalent power.

Second determines that unit 222 is configured to CQI_i,h·CQI_i,v·(1+α_i) be defined as described Corresponding to the described three dimensional channel quality instruction of the channel of the i-th reception antenna, wherein said first letter Road quality is designated as CQI_i,h, described second channel quality is designated as CQI_i,v。

Alternatively, the first acquiring unit 21 is configured to: from the channel of the described channel received State instruction reference signal (CSI-RS) thread extracts described first channel quality instruction and second Channel quality indicates；Calculate described first channel quality instruction long-pending with what second channel quality indicated.

Alternatively, the first acquiring unit 21 is configured to: receive described first channel quality instruction Indicate with second channel quality；Calculate described first channel quality instruction and second channel quality indicates Long-pending.

Alternatively, the first acquiring unit 21 is configured to: receive described first channel quality instruction With amassing of second channel quality instruction.

Alternatively, second acquisition unit 221 is configured to: obtain corresponding to jth reception antenna Channel equivalent channel power P in a first direction_j,h, corresponding to the channel of jth reception antenna Equivalent channel power P on two directions_j,v, the two dimensional equivalent corresponding to the channel of the i-th reception antenna is made an uproar Acoustical power P_N,i,2D, wherein j=1 ..., M, and j ≠ i, M is to receive in described 3D MIMO communication Antenna sum；The i-th reception antenna in communicating is calculated corresponding to described 3D MIMO by below equation The compensating factor α of channel_i:

Alternatively, second acquisition unit 221 is configured to: receives and leads to corresponding to described 3D MIMO The compensating factor α of the channel of the i-th reception antenna in letter_i。

It should be noted that the present invention can be by reality in the assembly of software and/or software and hardware Execute, such as, each device of the present invention can use special IC (ASIC) or any other Similar hardware device realizes.In one embodiment, the software program of the present invention can be by place Reason device performs to realize steps described above or function.Similarly, the software program (bag of the present invention Include relevant data structure) can be stored in computer readable recording medium storing program for performing, such as, RAM Memorizer, magnetically or optically driver or floppy disc and similar devices.It addition, some steps of the present invention Or function can employ hardware to realize, such as, perform each step as coordinating with processor Or the circuit of function.

It is obvious to a person skilled in the art that the invention is not restricted to above-mentioned one exemplary embodiment Details, and without departing from the spirit or essential characteristics of the present invention, it is possible to other Concrete form realizes the present invention.Which point therefore, no matter from the point of view of, embodiment all should be regarded as Exemplary, and be nonrestrictive, the scope of the present invention by claims rather than on State bright restriction, it is intended that the institute that will fall in the implication of equivalency and scope of claim Change and be included in the present invention.Should not be considered as any reference in claim limiting institute The claim related to.Furthermore, it is to be understood that " an including " word is not excluded for other unit or step, odd number It is not excluded for plural number.In system claims, multiple unit or the device of statement can also be by unit Or device is realized by software or hardware.The first, the second word such as grade is used for representing title, and It is not offered as any specific order.

Although the most specifically shown and describe exemplary embodiment, but those skilled in the art Will be understood that in the case of without departing substantially from the spirit and scope of claims, in its form Can be varied from details aspect.Protection sought herein is done in the dependent claims Illustrate.These and other aspects of each embodiment are defined in following numbering clause:

1. one kind produces channel in communicating three-dimensional multiple-input and multiple-output (3D MIMO) The method of three dimensional channel quality instruction (CQI), including:

Obtain the first channel quality instruction on the first direction of described channel and be different from first party To second direction on second channel quality instruction long-pending；

Based on amassing that the first channel quality instruction and second channel quality indicate, determine described channel Described three dimensional channel quality indicates.

2. according to the method for clause 1, wherein first direction is horizontally oriented, and second direction is vertical Direction.

3., according to the method for clause 1, wherein determine the described three dimensional channel quality instruction of described channel Step include:

Described first channel quality instruction and the long-pending of second channel quality instruction are defined as described letter The described three dimensional channel quality instruction in road.

4., according to the method for clause 1, wherein determine the described three dimensional channel quality instruction of described channel Step include:

Long-pending 2 times of described first channel quality instruction and the instruction of second channel quality are defined as institute State the described three dimensional channel quality instruction of channel.

5., according to the method for clause 1, wherein determine the described three dimensional channel quality instruction of described channel Step include:

Obtain the compensating factor of the channel of the i-th reception antenna in communicating corresponding to described 3D MIMO α_i, wherein

Reception antenna sum, P during wherein M is described 3D MIMO communication_j,hRepresent and receive corresponding to jth The channel of antenna equivalent channel power in a first direction, P_j,vRepresent corresponding to jth reception antenna Channel equivalent channel power in a second direction, P_N,i,2DRepresent corresponding to the i-th reception antenna The two dimensional equivalent noise power of channel, it is equal to the channel corresponding to the i-th reception antenna in first party To or second direction on noise equivalent power；

By CQI_i,h·CQI_i,v·(1+α_i) it is defined as the described channel corresponding to the i-th reception antenna Described three dimensional channel quality instruction (122), wherein said first channel quality is designated as CQI_i,h, Described second channel quality is designated as CQI_i,v。

6., according to the method for clause 1, wherein obtain the first letter on the first direction of described channel It is long-pending that road quality instruction and the second channel quality being different from the second direction of first direction indicate Step include:

Indicate reference signal (CSI-RS) thread from the channel status of the described channel received and carry Take described first channel quality instruction and second channel quality indicates；

Calculate described first channel quality instruction long-pending with what second channel quality indicated.

7., according to the method for clause 1, wherein obtain the first channel on the first direction of described channel The step that quality instruction and the second channel quality being different from the second direction of first direction indicate Including:

Receive described first channel quality instruction and second channel quality indicates；

Calculate described first channel quality instruction long-pending with what second channel quality indicated.

8., according to the method for clause 1, wherein obtain the first channel on the first direction of described channel The step that quality instruction and the second channel quality being different from the second direction of first direction indicate Including:

Receive described first channel quality instruction long-pending with what second channel quality indicated.

9., according to the method for clause 5, wherein obtain corresponding in described 3D MIMO communication i-th The compensating factor α of the channel of reception antenna_iStep include:

Obtain the equivalent channel power P in a first direction of the channel corresponding to jth reception antenna_j,h, Channel equivalent channel power P in a second direction corresponding to jth reception antenna_j,v, corresponding to Two dimensional equivalent noise power P of the channel of i reception antenna_N,i,2D(1211), wherein j=1 ..., M, and J ≠ i, M are reception antenna sums in described 3D MIMO communication；

The letter of the i-th reception antenna in communicating is calculated corresponding to described 3D MIMO by below equation The compensating factor α in road_i:

10., according to the method for clause 5, wherein obtain corresponding in described 3D MIMO communication i-th The compensating factor α of the channel of reception antenna_iStep include:

Receive the compensating factor α of the channel of the i-th reception antenna in communicating corresponding to described 3D MIMO_i。

11. 1 kinds for producing channel in three-dimensional multiple-input and multiple-output (3D MIMO) communication The device of three dimensional channel quality instruction (CQI), including:

First acquiring unit, is configured to the first channel matter obtaining on the first direction of described channel It is long-pending that amount instruction and the second channel quality being different from the second direction of first direction indicate；

First determines unit, is configured to refer to based on the first channel quality instruction and second channel quality That shows is long-pending, determines the described three dimensional channel quality instruction of described channel.

12. according to the device of clause 11, and wherein first direction is horizontally oriented, and second direction is perpendicular Nogata to.

13. according to the device of clause 11, and wherein first determines that unit is configured to:

Described first channel quality instruction and the long-pending of second channel quality instruction are defined as described letter The described three dimensional channel quality instruction in road.

14. according to the device of clause 11, and wherein first determines that unit is configured to:

Long-pending 2 times of described first channel quality instruction and the instruction of second channel quality are defined as institute State the described three dimensional channel quality instruction of channel.

15. according to the device of clause 11, and wherein first determines that unit includes:

Second acquisition unit, is configured to acquisition and connects corresponding in described 3D MIMO communication i-th Receive the compensating factor α of the channel of antenna_i, wherein

Reception antenna sum, P during wherein M is described 3D MIMO communication_j,hRepresent and receive corresponding to jth The channel of antenna equivalent channel power in a first direction, P_j,vRepresent corresponding to jth reception antenna Channel equivalent channel power in a second direction, P_N,i,2DRepresent corresponding to the i-th reception antenna The two dimensional equivalent noise power of channel, it is equal to the channel corresponding to the i-th reception antenna in first party To or second direction on noise equivalent power；

Second determines unit, is configured to CQI_i,h·CQI_i,v·(1+α_i) be defined as described right Should indicate in the described three dimensional channel quality of the channel of the i-th reception antenna, wherein said first channel Quality is designated as CQI_i,h, described second channel quality is designated as CQI_i,v。

16. according to the device of clause 11, and wherein the first acquiring unit is configured to:

Indicate reference signal CSI-RS thread from the channel status of the described channel received and extract Described first channel quality instruction and second channel quality indicate；

Calculate described first channel quality instruction long-pending with what second channel quality indicated.

17. according to the device of clause 11, and wherein the first acquiring unit is configured to:

Receive described first channel quality instruction and second channel quality indicates；

Calculate described first channel quality instruction long-pending with what second channel quality indicated.

18. according to the device of clause 11, and wherein the first acquiring unit is configured to:

Receive described first channel quality instruction long-pending with what second channel quality indicated.

19. according to the device of clause 15, and wherein second acquisition unit is configured to:

Obtain the equivalent channel power P in a first direction of the channel corresponding to jth reception antenna_j,h, Channel equivalent channel power P in a second direction corresponding to jth reception antenna_j,v, corresponding to Two dimensional equivalent noise power P of the channel of i reception antenna_N,i,2D, wherein j=1 ..., M, and j ≠ i, M It it is reception antenna sum in described 3D MIMO communication；

The letter of the i-th reception antenna in communicating is calculated corresponding to described 3D MIMO by below equation The compensating factor α in road_i:

20. according to the device of clause 15, and wherein second acquisition unit is configured to:

Receive the compensating factor α of the channel of the i-th reception antenna in communicating corresponding to described 3D MIMO_i。

Claims (15)

1. one kind produces channel in communicating three-dimensional multiple-input and multiple-output (3D MIMO) The method (1) of three dimensional channel quality instruction (CQI), including:

Obtain the first channel quality instruction on the first direction of described channel and be different from first party To second direction on long-pending (11) of second channel quality instruction；

Based on amassing that the first channel quality instruction and second channel quality indicate, determine described channel Described three dimensional channel quality instruction (12).

Method the most according to claim 1, wherein first direction is horizontally oriented, and second direction is Vertical direction.

Method the most according to claim 1, wherein determines the described three dimensional channel quality of described channel The step (12) of instruction includes:

Described first channel quality instruction and the long-pending of second channel quality instruction are defined as described letter The described three dimensional channel quality instruction in road.

Method the most according to claim 1, wherein determines the described three dimensional channel quality of described channel The step (12) of instruction includes:

Long-pending 2 times of described first channel quality instruction and the instruction of second channel quality are defined as institute State the described three dimensional channel quality instruction of channel.

Method the most according to claim 1, wherein determines the described three dimensional channel quality of described channel The step (12) of instruction includes:

Obtain the compensating factor of the channel of the i-th reception antenna in communicating corresponding to described 3D MIMO α_i(121), wherein

Reception antenna sum, P during wherein M is described 3D MIMO communication_j,hRepresent and receive corresponding to jth The channel of antenna equivalent channel power in a first direction, P_j,vRepresent corresponding to jth reception antenna Channel equivalent channel power in a second direction, P_N,i,2DRepresent corresponding to the i-th reception antenna The two dimensional equivalent noise power of channel, it is equal to the channel corresponding to the i-th reception antenna in first party To or second direction on noise equivalent power；

By CQI_i,h·CQI_i,v·(1+α_i) it is defined as the described channel corresponding to the i-th reception antenna Described three dimensional channel quality instruction (122), wherein said first channel quality is designated as CQI_i,h, Described second channel quality is designated as CQI_i,v。

6. one kind produces channel in communicating three-dimensional multiple-input and multiple-output (3D MIMO) The device (2) of three dimensional channel quality instruction (CQI), including:

First acquiring unit (21), is configured to obtain first on the first direction of described channel Channel quality instruction and the second channel quality being different from the second direction of first direction indicate Long-pending；

First determines unit (22), is configured to based on the first channel quality instruction and second channel Amassing of quality instruction, determines the described three dimensional channel quality instruction of described channel.

Device the most according to claim 6, wherein first direction is horizontally oriented, and second direction is Vertical direction.

Device the most according to claim 6, wherein first determines that unit (22) is configured to:

Described first channel quality instruction and the long-pending of second channel quality instruction are defined as described letter The described three dimensional channel quality instruction in road.

Device the most according to claim 6, wherein first determines that unit (22) is configured to:

Long-pending 2 times of described first channel quality instruction and the instruction of second channel quality are defined as institute State the described three dimensional channel quality instruction of channel.

Device the most according to claim 6, wherein first determines that unit (22) including:

Second acquisition unit (221), is configured to obtain corresponding in described 3D MIMO communication The compensating factor α of the channel of the i-th reception antenna_i, wherein

Reception antenna sum, P during wherein M is described 3D MIMO communication_j,hRepresent and receive corresponding to jth The channel of antenna equivalent channel power in a first direction, P_j,vRepresent corresponding to jth reception antenna Channel equivalent channel power in a second direction, P_N,i,2DRepresent corresponding to the i-th reception antenna The two dimensional equivalent noise power of channel, it is equal to the channel corresponding to the i-th reception antenna in first party To or second direction on noise equivalent power；

Second determines unit (222), is configured to CQI_i,h·CQI_i,v·(1+α_i) determine Described three dimensional channel quality for the described channel corresponding to the i-th reception antenna indicates, wherein said First channel quality is designated as CQI_i,h, described second channel quality is designated as CQI_i,v。

11. devices according to claim 6, wherein the first acquiring unit (21) is configured to:

Indicate reference signal (CSI-RS) thread from the channel status of the described channel received and carry Take described first channel quality instruction and second channel quality indicates；

Calculate described first channel quality instruction long-pending with what second channel quality indicated.

12. devices according to claim 6, wherein the first acquiring unit (21) is configured to:

Receive described first channel quality instruction and second channel quality indicates；

Calculate described first channel quality instruction long-pending with what second channel quality indicated.

13. devices according to claim 6, wherein the first acquiring unit (21) is configured to:

Receive described first channel quality instruction long-pending with what second channel quality indicated.

14. devices according to claim 10, wherein second acquisition unit (221) is configured to:

Obtain the equivalent channel power P in a first direction of the channel corresponding to jth reception antenna_j,h, Channel equivalent channel power P in a second direction corresponding to jth reception antenna_j,v, corresponding to Two dimensional equivalent noise power P of the channel of i reception antenna_N,i,2D, wherein j=1 ..., M, and j ≠ i, M It it is reception antenna sum in described 3D MIMO communication；

The letter of the i-th reception antenna in communicating is calculated corresponding to described 3D MIMO by below equation The compensating factor α in road_i:

15. devices according to claim 10, wherein second acquisition unit (221) is configured to:

Receive the compensating factor α of the channel of the i-th reception antenna in communicating corresponding to described 3D MIMO_i。