CN107040329B

CN107040329B - A kind of Space Frequency Block Coding SFBC transmission mode determines method and device

Info

Publication number: CN107040329B
Application number: CN201610076969.6A
Authority: CN
Inventors: 李晓皎
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2016-02-03
Filing date: 2016-02-03
Publication date: 2019-09-17
Anticipated expiration: 2036-02-03
Also published as: CN107040329A

Abstract

The invention discloses a kind of Space Frequency Block Coding SFBC transmission modes to determine method and device.The method of the present invention includes: the reception signal obtained on Physical Resource Block PRB and the channel estimation value obtained according to the reception signal；According to the reception signal on the PRB and the channel estimation value obtained according to the reception signal, determine the first correlation matrix of the reception signal in the resource unit RE group in the PRB for carrying out SFBC transmission mode judgement and the second correlation matrix of the channel estimation value in RE group；According to the characteristic relation between the first correlation matrix and the second correlation matrix, determine whether the transmission mode of the PRB is SFBC transmission mode.Whether the invention enables terminals Target cell can be judged using SFBC transmission mode.

Description

A kind of Space Frequency Block Coding SFBC transmission mode determines method and device

Technical field

The present invention relates to fields of communication technology more particularly to a kind of Space Frequency Block Coding SFBC transmission mode to determine method and dress It sets.

Background technique

With the sharp increase of mobile data services amount, in order to realize higher data rate, lower time delay, data packet The flat network topology of optimization enhances power system capacity and area coverage, improves frequency spectrum resource utilization rate and reduces operator's cost, LTE- A (LTE-Advanced, Long Term Evolution upgraded version) as LTE (Long Term Evolution, long term evolution) into One step evolution, new technology that is compatible and using LTE.3GPP (3rd Generation Partnership Project, third For partner program) R8 (Release 8, version 8) completes design and specification to LTE entirety, the LTE net runed now Network is typically all the regulation based on 3GPP R8 standard.Since 3GPP R9, start the demand behaviors, the system tray that carry out LTE-A Structure, specific implementation technology and network design.

In 3GPP R12 release criteria, the interference between small base station is eliminated, NAICS (Network- is proposed Assisted Interference Cancellation and Suppression, the interference based on network assistance is eliminated and suppression System) technology, so that terminal can obtain stronger interference processing capacity.Network side is by issuing the relevant high-rise letter of NAICS Information is enabled, has the terminal of NAICS receiver function according to the partial information of the interfered cell in high-level signaling and to itself neighbour The blind examination of cell information detects the information of this cell, so that echo signal can obtain good performance.

The more comprehensive the information for the interfered cell that theoretically network side issues the more accurate, and terminal can be obtained to echo signal more Good detection performance.However, complete and accurate interfered cell information issue, base station side on the one hand will limit to interfered cell Transmitting and scheduling flexibility, the expense of still further aspect, complete accurate information is excessive, is difficult to accomplish under perfect information Hair.Wherein, it is small cannot to be issued to service in the NAICS at present also in normalization period for the transmission mode of interfered cell The transmission mode of interfered cell can not be known in area, i.e. serving cell, and the information is the parameter for needing to obtain in NAICS receiver One of.Existing NAICS receiver does not support the transmission mode progress blind examination to interfered cell yet, and terminal is not carried out estimation interference The algorithm of cell transmission mode.

Therefore, how to overcome drawbacks described above, enable the terminal to transmission mode used by judging Target cell, be industry It urgently studies and solves the problems, such as in boundary.

Summary of the invention

The embodiment of the present invention provides a kind of Space Frequency Block Coding SFBC transmission mode and determines method and device, and use is so that terminal Target cell can be judged whether using SFBC transmission mode.

The Space Frequency Block Coding SFBC transmission mode that one embodiment of the present of invention provides determines method, comprising:

The channel estimation value for obtaining the reception signal on Physical Resource Block PRB and being obtained according to the reception signal；

According to the reception signal on the PRB and according to the obtained channel estimation value of reception signal, determine described in First correlation matrix of the reception signal in the resource unit RE group in PRB for carrying out SFBC transmission mode judgement, Yi Jisuo State the second correlation matrix of the channel estimation value in RE group；

According to the characteristic relation between first correlation matrix and second correlation matrix, the biography of the PRB is determined Whether defeated mode is SFBC transmission mode.

In some embodiments of the invention, it determines in the PRB for carrying out the one of SFBC transmission mode judgement First correlation matrix of the reception signal in a RE group and the second correlation matrix of the channel estimation value in the RE group, comprising:

It is formed by matrix and the associate matrix of the matrix according to the reception signal in the RE group on RE, is determined First correlation matrix of the reception signal in the RE group；

It is formed by matrix and the associate matrix of the matrix according to the channel estimation value in the RE group on RE, really Second correlation matrix of the channel estimation value in the fixed RE group.

It in some embodiments of the invention, include 2 RE in a RE group, channel estimation value and the RE in the RE group The channel estimation value on a RE in group is identical, or is the average of the channel estimation value on two RE in the RE group；

Further, matrix and the conjugate transposition of the matrix are formed by according to the reception signal in the RE group on RE Matrix determines the first correlation matrix of the reception signal in the RE group, comprising:

The first correlation matrix of the reception signal in the RE group is calculated according to following formula:

Wherein, R_y1y2Indicate the first correlation matrix, y₁And y₂Respectively indicate in a RE group respective reception letter on two RE Number, []^HIt is the point multiplication operation of matrix for the associate matrix of matrix；

It is formed by matrix and the associate matrix of the matrix according to the channel estimation value in the RE group on RE, really Second correlation matrix of the channel estimation value in the fixed RE group, comprising:

The second correlation matrix of the channel estimation value in the RE group is calculated according to following formula:

R_H=HH^H

Wherein, R_HIndicate that the second correlation matrix, H indicate the channel estimation value in a RE group.

In some embodiments of the invention, described according between first correlation matrix and second correlation matrix Characteristic relation, determine whether the transmission mode of the PRB is SFBC transmission mode, comprising:

Determine that the characteristic relation reference quantity between first correlation matrix and second correlation matrix, the feature are closed It is reference quantity for indicating whether the characteristic relation between first correlation matrix and second correlation matrix meets SFBC Mode feature；

According to the characteristic relation reference quantity, determine whether the transmission mode of the PRB is SFBC transmission mode.

In some currently preferred embodiments of the present invention, characteristic relation reference quantity includes the first reference quantity and/or the second reference Amount.

Further, it is determined that the characteristic relation reference quantity between first correlation matrix and second correlation matrix, Include:

It is respectively compared the real part and the second correlation matrix auxiliary diagonal of the first correlation matrix auxiliary diagonal element Whether the symbol of the real part of element consistent and the imaginary part of the first correlation matrix auxiliary diagonal element is related to described second Whether the symbol of the imaginary part of matrix auxiliary diagonal element is consistent, and the result compared twice is quantified as the first reference Amount；And/or

The size relation being respectively compared between the first correlation matrix the elements in a main diagonal and second Correlation Moment Size relation between battle array the elements in a main diagonal, is quantified as the second reference quantity for the result compared twice.

Specifically, the result compared twice is quantified as the first reference quantity, comprising:

The first reference quantity is determined according to following formula:

γ=abs (sign (real (b_y1y2))-sign(real(b_H)))+abs(sign(imag(b_y1y2))-sign (imag(b_H)))

Wherein, γ indicates the first reference quantity, and abs () is ABS function, and sign () is sign function, and real () is pair Plural number takes real part operation, and imag () is to take imaginary-part operation to plural number, and the first correlation matrix of the reception signal in a RE group isSecond correlation matrix of the channel estimation value in one RE group is

Specifically, the result compared twice is quantified as the second reference quantity, comprising:

The second reference quantity is determined according to following formula:

λ=abs (sign (a_y1y2-d_y1y2)-sign(a_H-d_H))

Wherein, λ indicates the second reference quantity.

In some embodiments of the invention, according to first reference quantity, determine that the transmission mode of the PRB is No is SFBC transmission mode, comprising:

One of if the following conditions are met or combination, it is determined that the transmission mode of the PRB is SFBC transmission mode:

Condition 1, P (γ_i=0) it is greater than default first threshold value；

Condition 2,Less than default second threshold value；

According to second reference quantity, determine whether the transmission mode of the PRB is SFBC transmission mode, comprising:

Condition 3, P (λ_i=0) it is greater than default third threshold value；

Condition 4,Less than default 4th threshold value；

According to first reference quantity and second reference quantity, determine whether the transmission mode of the PRB is that SFBC is passed Defeated mode, comprising:

Condition 5, P (γ_i=0) it is greater than default 5th threshold value and P (λ_i=0) it is greater than default 6th threshold value；

Condition 6,Less than default 7th threshold value andLess than default 8th threshold value；

Wherein, P (γ_i=0) the first reference quantity for a RE group in all RE groups of a PRB is equal to 0 probability, P (λ_i=0) the second reference quantity for a RE group in all RE groups of a PRB is equal to 0 probability, and N indicates the institute of a PRB There is the quantity of RE group,Indicate the cumulative of respective first reference quantity of all RE groups of a PRB and,It indicates Respective second reference quantity of all RE groups of one PRB cumulative and, i, N are the integer greater than 0.

Specifically, the characteristic relation according between first correlation matrix and second correlation matrix determines Whether the transmission mode of the PRB is SFBC transmission mode, comprising:

According to all for carrying out the first correlation matrix and the second phase of the RE group of SFBC transmission mode judgement in the PRB The characteristic relation between matrix is closed, the characteristic relation between the first correlation matrix and the second correlation matrix is calculated and meets SFBC transmission The quantity of the RE group of the aspect of model, account for all RE groups quantity percentage, if the percentage being calculated be greater than it is pre- If threshold value, it is determined that the transmission mode of the PRB is SFBC transmission mode.

Wherein, a RE group in the PRB for carrying out SFBC transmission mode judgement is that the PRB is transmitted according to SFBC Two RE encoded jointly when model is encoded.

The Space Frequency Block Coding SFBC transmission mode determining device that one embodiment of the present of invention provides, comprising:

Module is obtained, for obtaining receptions signal on Physical Resource Block PRB and receiving what signal obtained according to described Channel estimation value；

First determining module, for according to the reception signal on the PRB and the letter obtained according to the reception signal Road estimated value determines in the PRB for carrying out the of the reception signal in the resource unit RE group of SFBC transmission mode judgement Second correlation matrix of one correlation matrix and the channel estimation value in the RE group；

Second determining module, for being closed according to the feature between first correlation matrix and second correlation matrix System, determines whether the transmission mode of the PRB is SFBC transmission mode.

Wherein, the first determining module is specifically used for:

It is formed by matrix and the associate matrix of the matrix according to the reception signal in a RE group on RE, really First correlation matrix of the reception signal in the fixed RE group；

It is formed by matrix and the associate matrix of the matrix according to the channel estimation value in a RE group on RE, Determine the second correlation matrix of the channel estimation value in the RE group.

Wherein, the first determining module is specifically used for:

R_H=HH^H

In some embodiments of the invention, the second determining module is specifically used for:

Preferably, characteristic relation reference quantity includes the first reference quantity and/or the second reference quantity；

Wherein, the second determining module is specifically used for:

Further, the second determining module is specifically used for:

The first reference quantity is determined according to following formula:

The second reference quantity is determined according to following formula:

λ=abs (sign (a_y1y2-d_y1y2)-sign(a_H-d_H))

Wherein, λ indicates the second reference quantity.

In some embodiments of the invention, the second determining module is specifically used for: according to first reference quantity, if full One of sufficient the following conditions or combination, it is determined that the transmission mode of the PRB is SFBC transmission mode:

Condition 1, P (γ_i=0) it is greater than default first threshold value；

Condition 2,Less than default second threshold value；

In some embodiments of the invention, the second determining module is specifically used for: according to second reference quantity, if full One of sufficient the following conditions or combination, it is determined that the transmission mode of the PRB is SFBC transmission mode:

Condition 3, P (λ_i=0) it is greater than default third threshold value；

Condition 4,Less than default 4th threshold value；

In some embodiments of the invention, the second determining module is specifically used for: according to first reference quantity and described Second reference quantity, one of if the following conditions are met or combination, it is determined that the transmission mode of the PRB is SFBC transmission mode:

The above embodiment of the present invention provides a kind of technical solution that Space Frequency Block Coding SFBC transmission mode determines, so that Terminal can be based on the channel estimation for receiving signal on the Physical Resource Block PRB got and being obtained according to the reception signal Value, by the first phase for determining the reception signal in the resource unit RE group in the PRB for carrying out SFBC transmission mode judgement The second correlation matrix of the channel estimation value in matrix and the RE group is closed, and then can be related to second according to the first correlation matrix Characteristic relation between matrix determines whether the transmission mode of the PRB is SFBC transmission mode.It can be seen that of the invention is upper State technical solution provided by embodiment can make up for it terminal in the prior art do not have estimation interfered cell transmission mode algorithm Defect, enable the terminal to judge whether Target cell passes using SFBC according to signal and channel estimation value is received Defeated mode.

Detailed description of the invention

To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment Attached drawing is briefly introduced, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this For the those of ordinary skill in field, without any creative labor, it can also be obtained according to these attached drawings His attached drawing.

Fig. 1 is the disturbed schematic diagram of terminal in the prior art；

Fig. 2 is that two transmitting antennas send the schematic diagram that signal uses SFBC mode in the prior art；

Fig. 3 is the process signal that the Space Frequency Block Coding SFBC transmission mode that one embodiment of the present of invention provides determines method Figure；

Fig. 4 is the structural representation for the Space Frequency Block Coding SFBC transmission mode determining device that one embodiment of the present of invention provides Figure；

Fig. 5 is the terminal that function is determined with Space Frequency Block Coding SFBC transmission mode that one embodiment of the present of invention provides Structural schematic diagram.

Specific embodiment

To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts All other embodiment, shall fall within the protection scope of the present invention.

With the increase of site deployment density in LTE network, cell coverage area becomes smaller so that disparate networks node from Terminal is closer, brings the promotion of power efficiency and spectrum efficiency, and then power system capacity and business can be significantly increased Flexibility between various access technologies and each cover-stratification is provided.But the densification of network node also leads to adjacent network section The transmission loss difference of point reduces, and so as to cause there are the interference sources that multiple intensity are close for terminal, terminal is caused to connect By serious interference when the collection of letters.

Fig. 1 shows a kind of disturbed example of terminal in the prior art.It is disturbed in interference limiting system shown in Fig. 1 Terminal UE is when receiving signal (the Target Signal) of serving cell (Serving Cell), while the cell that is interfered (Interference Cell#1, Interference Cell#2) signal (Interference Signal#1, Interference Signal#2) influence.Serving cell and interfered cell dispatch same running time-frequency resource and carry out bearer service, Signal transmitted by multiple cells (Target Signal, Interference Signal#1, Interference Signal# 2) it, in independence after fading channel, is overlapped at disturbed terminal UE.

It should be pointed out that it is involved in the present invention to terminal refer to the equipment for providing a user voice and/or data connectivity (device), it may include the handheld device with wireless communication function, mobile unit, wearable device, calculate equipment or company It is connected to the other processing equipments and various forms of UE (User Equipment, terminal), MS of radio modem (Mobile station, mobile station), terminal (terminal), terminal device (Terminal Equipment) etc..For side Just it describes, in the application, referred to as terminal or UE.

Although network side issues the relevant higher layer signalling message of NAICS, enable the terminal for having NAICS receiver function It is enough according to the partial information of the interfered cell in high-level signaling and the blind examination to itself information of adjacent cells, to the information of this cell into Row detection, so that echo signal (Target Signal) can obtain good performance.But current NAICS is also in mark The quasi-ization stage cannot issue the transmission mode of interfered cell to serving cell, and existing receiver is not to the transmission side of interfered cell Formula carries out blind examination, and terminal does not have the algorithm of estimation interfered cell transmission mode, i.e. terminal can not judge the transmission of interfered cell Mode obtains to influence terminal to the better detection performance of echo signal.

In addition, in existing LTE standard, using SFBC (the Space-Frequency Block for combining null tone resource Coding, Space Frequency Block Coding) transmission mode of the transmission mode as two antenna port transmission diversities.By utilizing space channel Weak dependence, the selectivity on binding time, frequency, will undergo the signal copy of different declines to merge in receiving end, drop Low combined signal is in the probability of deep fade, obtains diversity gain with this, improves the reliability of signal transmission.

SFBC is derived from STBC (Space Time Block Code, space-time block coding) transmission mode, since LTE is used OFDM (Orthogonal Frequency Division Multiplexing, orthogonal frequency division multiplexing) technology, by time-frequency domain object Reason resource is scheduled and distributes according to PRB (Physical Resource Block, Physical Resource Block), and a PRB pair should frequency 12 continuous RE (Resource Element, resource unit (also known as subcarrier)) on domain, a slot s lot in time domain.By 7 OFDM symbols are accounted in a time slot, symbolic number is odd number, therefore is unsuitable for using STBC, but frequency domain resource is with a RB It is distributed for 12 RE, therefore with continuous two time slots in continuous two RE substitution STBC, forms SFBC transmission mode.

In SFBC transmission mode, information bit to be sent after constellation mapping as unit of two symbols by being entered Space Frequency Block Coding device.Fig. 2 shows two transmitting antennas to send the example that signal uses SFBC mode, it can be seen that answers For in the SFBC mode of two transmitting antennas, if the symbol stream of input SFBC encoder is C₁, C₂, then antenna 1 and antenna 2 The 1st RE on transmit C respectively₁And C₂, and transmission-C respectively on the 2nd RE of antenna 1 and antenna 2₂And C *₁*, wherein () * table It gives instructions in reply several conjugation, the 1st RE and the 2nd RE is continuous subcarrier on frequency domain.SFBC mode by with transmission C₁And C₂ Adjacent another RE of a RE of frequency domain transmit C₁And C₂Copy improve transmission reliability to obtain diversity gain.

Based on above-mentioned analysis, the defect of the transmission mode of interfered cell, this hair can not be judged for terminal in the prior art A kind of bright technical solution for devising Space Frequency Block Coding SFBC transmission mode and determining allows terminal according to based on can obtain The known quantity arrived, i.e. reception signal and the channel estimation value (channel estimation value of Target cell) obtained according to signal is received, Whether the characteristic relation between correlation matrix by determining the correlation matrix and channel estimation value that receive signal can satisfy The feature of SFBC mode realizes the judgement that SFBC transmission mode whether is used to Target cell.

The embodiment of the present invention is described in detail with reference to the accompanying drawing.

Fig. 3 shows the process signal that Space Frequency Block Coding SFBC transmission mode provided in an embodiment of the present invention determines method Figure, the process can be by the Space Frequency Block Coding SFBC transmission mode determining device realization of terminal or configuration at the terminal, the process packets Include following steps:

Step 301: obtaining the reception signal on Physical Resource Block PRB and estimated according to the channel that the reception signal obtains Evaluation.

Step 302: according to the reception signal on the PRB and the channel estimation value obtained according to the reception signal, really First correlation matrix of the reception signal in the resource unit RE group in the fixed PRB for carrying out SFBC transmission mode judgement, with And the second correlation matrix of the channel estimation value in RE group.

Step 303: according to the characteristic relation between the first correlation matrix and the second correlation matrix, determining the transmission of the PRB Whether mode is SFBC transmission mode.

It specifically, is the feature encoded jointly according to every two RE come transmission diversity based on SFBC mode, the present invention Embodiment in, for a PRB, a RE group in the PRB for carrying out SFBC transmission mode judgement can be the PRB by Two RE encoded jointly when being encoded according to SFBC mode.Wherein, two encoded jointly in SFBC mode A RE can be adjacent on frequency domain.

In some embodiments of the invention, it described in step 302, determines in the PRB for carrying out SFBC transmission First correlation matrix of the reception signal in one RE group of mode adjudging, comprising:

It is formed by matrix and the associate matrix of the matrix according to the reception signal in the RE group on RE, is determined First correlation matrix of the reception signal in the RE group.

Specifically, it can be according to the respective reception signal of RE each in the RE group and the respective reception letter of each RE Number associate matrix, determine in the RE group reception signal the first correlation matrix.Wherein, the respective reception letter of each RE Number it can be understood as a matrix.

In some embodiments of the invention, it described in step 302, determines in the PRB for carrying out SFBC transmission Second correlation matrix of the channel estimation value in one RE group of mode adjudging, comprising:

Specifically, it can be according to the channel estimation value on each RE in the RE group, choose the channel on one of RE Estimated value determines the RE according to the associate matrix of channel estimation value and the channel estimation value on the RE selected Second correlation matrix of the channel estimation value in group；Or be also possible to according to the channel estimation value on each RE in the RE group, The average for calculating the channel estimation value on all RE, according to the conjugate transposition of the average being calculated and the average Matrix determines the second correlation matrix of the channel estimation value in the RE group.Wherein, the respective channel estimation value of each RE can be managed Solution is a matrix, and the average of the channel estimation value on all RE again it will be understood that as a matrix.

For a PRB, a RE group can be two encoded jointly when the PRB is encoded according to SFBC mode A RE, since the channel of the two RE is similar, i.e., the channel estimation value of the two RE is also similar, and symbolically is one A RE group [RE₁, RE₂] by the adjacent RE of frequency domain₁With RE₂It forms, wherein RE₁On reception signal be y₁, channel estimation value H₁, RE₂On reception signal be y₂, channel estimation value H₂, H₁With H₂It is similar.Therefore, in some embodiments of the invention, it is used for It carries out specifically may include 2 RE in a RE group of SFBC transmission mode judgement, the channel estimation value in the RE group can be with The channel estimation value on first RE in the RE group is identical, or can be with the channel estimation on second RE in the RE group It is worth identical, or may be the average etc. of the channel estimation value in the RE group on two RE.It is indicated according to symbol above, That is a RE group [RE₁, RE₂] on channel estimation value H can be equal to RE₁On channel estimation value be H₁, or RE can be equal to₂ On channel estimation value be H₂, or H can be equal to₁With H₂Adduction it is average.

Further, turned according to the conjugation that the reception signal in a RE group on RE is formed by matrix and the matrix Matrix is set, the first correlation matrix of the reception signal in the RE group can be specifically calculated according to following formula:

Wherein, R_y1y2Indicate the first correlation matrix, y₁And y₂Respectively indicate in a RE group respective reception letter on two RE Number, []^HIt is the point multiplication operation of matrix for the associate matrix of matrix.

Further, matrix and the conjugation of the matrix are formed by according to the channel estimation value in a RE group on RE Transposed matrix can specifically calculate the second correlation matrix of the channel estimation value in the RE group according to following formula:

R_H=HH^H

Second of the first correlation matrix for receiving signal and channel estimation value in above-mentioned be calculated a RE group Correlation matrix can be used to judge whether the RE group meets the feature of SFBC mode, make a concrete analysis of as follows:

Mould is transmitted to SFBC so that two layer datas transmission (i.e. two transmitting antennas) is using SFBC mode transmission diversity as an example The feature of type is analyzed, and when transmitting two layers data using SFBC mode, two RE are total in a RE group With coding, transmission symbol of the 1st RE in two-port is s₁, andTransmission symbol of 2nd RE in two-port Number be s₂, andThe channel fading that this two layer data is passed through when being sent by two antennas, channel estimation value difference For H₁、H₂.Under the influence of not considering noise, signal y is received₁Are as follows: y₁=H₁·s₁, y₂Are as follows: y₂=H₂·s₂.SFBC is passed Defeated model, can be according to reception signal y₁And y₂It calculates:

Since the channel of the two RE encoded jointly is similar, it can be approximately considered the two RE's in calculating Channel estimation value is identical, i.e. H₁=H₂=H, it can enabling the channel estimation value in the RE group is H, is further calculated in the RE group Channel estimation value H correlation matrix and receive signal y₁And y₂Correlation matrix it is as follows:

R_H=HH^H

It can be seen that R_HMain diagonal element is real number, auxiliary diagonal element conjugate complex number each other, andAndAdd for what two plural numbers were respectively obtained with its conjugate multiplication With, therefore it is greater than or equal to 0.

So as to obtain in SFBC mode, R_y1y2Auxiliary diagonal element and R_HThere is only multiple passes for auxiliary diagonal element System, i.e. R_y1y2Auxiliary diagonal element is not only also conjugate complex number, and R each other_y1y2The real part and R of auxiliary diagonal element_HAuxiliary diagonal element Real part of symbol is consistent, that is, is all positive number or is all negative, R_y1y2The imaginary part of auxiliary diagonal element equally also with R_HThe void of auxiliary diagonal element Portion's symbol is consistent；In addition, R_y1y2Main diagonal element and R_HAlso there is only multiple proportions, i.e. R for main diagonal element_y1y2Main diagonal element It also is real number, and R_y1y2Size relation and R between main diagonal element_HSize relation between main diagonal element is consistent.

According to the feature of the above-mentioned obtained SFBC mode of analysis to SFBC mode, determined in step 302 The first correlation matrix of the reception signal in the RE group for carrying out SFBC transmission mode judgement (can be interpreted as above-mentioned point out Reception signal y in analysis in a RE group₁And y₂Correlation matrix R_y1y2) and channel estimation value in RE group is second related Matrix (can be interpreted as the correlation matrix R of the channel estimation value in above-mentioned analysis in a RE group_H) after, further may be used To determine the transmission mould of the PRB according to the characteristic relation between the first correlation matrix and the second correlation matrix by step 303 Whether formula is SFBC transmission mode.

In some embodiments of the invention, the execution of step 303 includes: first determining the first correlation matrix and the second phase The characteristic relation reference quantity between matrix is closed, this feature relationship reference quantity is for indicating the first correlation matrix and the second correlation matrix Between characteristic relation whether meet SFBC mode feature；To determine the biography of the PRB according to this feature relationship reference quantity Whether defeated mode is SFBC transmission mode.

In some embodiments of the invention, determine that the feature between the first correlation matrix and the second correlation matrix is closed It is that reference quantity can be the first reference quantity determined between the first correlation matrix and the second correlation matrix, or can be and determine the The second reference quantity between one correlation matrix and the second correlation matrix, or can be and determine the first correlation matrix and the second correlation The first reference quantity and the second reference quantity between matrix.

Based on the feature of above-mentioned SFBC mode, the determination of the first reference quantity can be by being respectively compared first Whether the real part of correlation matrix auxiliary diagonal element is consistent with the symbol of the real part of the second correlation matrix auxiliary diagonal element, and Whether the imaginary part of the first correlation matrix auxiliary diagonal element is consistent with the symbol of the imaginary part of the second correlation matrix auxiliary diagonal element, And the result for comparing this twice is quantified to obtain.

Based on the feature of above-mentioned SFBC mode, the determination of the second reference quantity can be and be respectively compared the first correlation The size relation between size relation and the second correlation matrix the elements in a main diagonal between matrix the elements in a main diagonal, will This result compared twice is quantified to obtain.

When concrete operation, the above-mentioned result that will compare twice is quantified as the first reference quantity, can be according to following public affairs Formula is quantified to obtain the first reference quantity:

It can be seen that if the first obtained reference quantity γ is 0, then it represents that the real part of the first correlation matrix auxiliary diagonal element It is consistent with the symbol of real part of the second correlation matrix auxiliary diagonal element, and the imaginary part of the first correlation matrix auxiliary diagonal element with The symbol of the imaginary part of second correlation matrix auxiliary diagonal element is consistent, i.e. the RE group feature that can satisfy SFBC mode.

When concrete operation, the above-mentioned result that will compare twice is quantified as the second reference quantity, can be according to following public affairs Formula is quantified to obtain the second reference quantity:

λ=abs (sign (a_y1y2-d_y1y2)-sign(a_H-d_H))

Wherein, λ indicates the second reference quantity.

It will also be seen that if the second obtained reference quantity λ is 0, then it represents that between the first correlation matrix the elements in a main diagonal Size relation and the second correlation matrix the elements in a main diagonal between size relation be consistent, i.e., the RE group can satisfy The feature of SFBC mode.

For a RE group, if being 0 or second reference quantity by the above-mentioned first reference quantity γ that is calculated λ be 0 or first reference quantity γ and the second reference quantity λ be 0, can judge that the RE group meets the spy of SFBC mode Sign, the i.e. transmission mode of the RE group are SFBC transmission mode.

Based on above-mentioned analysis, for a PRB, several groups are generally included for carrying out the RE of SFBC transmission mode judgement Group, and the transmission mode that the RE in the same PRB is used usually is consistent, therefore step 303 is described according to the first phase The characteristic relation between matrix and the second correlation matrix is closed, determines whether the transmission mode of the PRB is SFBC transmission mode, specifically It can be all for carrying out SFBC transmission mode in the PRB according to the RE group for meeting SFBC mode feature in the PRB Whether shared ratio, be SFBC transmission mode to adjudicate the transmission mode of the PRB, i.e., in step 302 base in the RE group of judgement On plinth, further according to all for carrying out the first correlation matrix and second of the RE group of SFBC transmission mode judgement in the PRB Characteristic relation between correlation matrix calculates the characteristic relation between the first correlation matrix and the second correlation matrix and meets SFBC biography The percentage of the quantity of the RE group of the defeated aspect of model, the quantity of Zhan Suoyou RE group, if the percentage being calculated be greater than it is default Threshold value, it is determined that the transmission mode of the PRB is SFBC transmission mode.

Wherein, the characteristic relation between the first correlation matrix and the second correlation matrix meets the RE of SFBC mode feature The quantity of group accounts for the percentage of the quantity of all RE groups, can pass through the first correlation matrix and second of a RE group in the PRB Characteristic relation between correlation matrix meets the probability reflection of SFBC mode, or can also be by will own in the PRB The statistical nature that characteristic relation between the first correlation matrix and the second correlation matrix of RE group obtains after being quantified carries out anti- It reflects.

According to the first reference quantity perhaps the second reference quantity or the first reference quantity and second can be used in above-mentioned analysis Reference quantity, it is special whether the characteristic relation to indicate between the first correlation matrix and the second correlation matrix meets SFBC mode Sign, further, it is determined that whether the transmission mode of a PRB is that SFBC transmission mode can be used but not limited to following judgement side Formula:

It in some embodiments of the invention, specifically can be according to the first reference quantity, by whether judging the first reference quantity It can satisfy one of the following conditions or combination, determine whether the transmission mode of the PRB is SFBC transmission mode:

Condition 1, P (γ_i=0) it is greater than default first threshold value；

Condition 2,Less than default second threshold value；

If the first reference quantity can satisfy one of above-mentioned condition or combination, it can determine that the transmission mode of the PRB is SFBC transmission mode.

It or in some embodiments of the invention, can also be according to the second reference quantity, by judging that the second reference quantity is It is no to can satisfy one of the following conditions or combination, determine whether the transmission mode of the PRB is SFBC transmission mode:

Condition 3, P (λ_i=0) it is greater than default third threshold value；

Condition 4,Less than default 4th threshold value；

If the second reference quantity can satisfy one of above-mentioned condition or combination, it can determine that the transmission mode of the PRB is SFBC transmission mode.

Or in some embodiments of the invention, judgement can also be passed through according to the first reference quantity and the second reference quantity First reference quantity and the second reference quantity whether can satisfy one of the following conditions or combination, determine the PRB transmission mode whether For SFBC transmission mode:

If the first reference quantity and the second reference quantity can satisfy one of above-mentioned condition or combination, it can determine the PRB's Transmission mode is SFBC transmission mode.

Wherein, above-mentioned P (γ_i=0) indicate that the first reference quantity of a RE group in all RE groups of a PRB is equal to 0 Probability, P (λ_i=0) indicate that the probability that the second reference quantity of a RE group in all RE groups of a PRB is equal to 0, N indicate one The quantity of all RE groups of a PRB,Indicate the cumulative of respective first reference quantity of all RE groups of a PRB and,It indicates the cumulative of respective second reference quantity of all RE groups of a PRB and i, N is the integer greater than 0.

By above description as can be seen that a kind of Space Frequency Block Coding SFBC transmission mode provided by the embodiment of the present invention is true Determine method, enables the terminal to estimate based on reception signal on the PRB got and according to the channel that the reception signal obtains Evaluation, by the first correlation matrix for determining the reception signal in the RE group in the PRB for carrying out SFBC transmission mode judgement With the second correlation matrix of the channel estimation value in RE group, and then according to the spy between the first correlation matrix and the second correlation matrix Sign relationship realizes whether be the judgement of SFBC transmission mode to the transmission mode of the PRB, to compensate for terminal in the prior art Do not have the defect of estimation interfered cell transmission mode algorithm.

In addition, passing through description specifically above, it is further seen that a kind of Space Frequency Block Coding provided by the embodiment of the present invention SFBC transmission mode determines that method computation complexity is lower, and algorithm performance is preferable.For being still in normalization period NAICS at present Technology, a kind of Space Frequency Block Coding SFBC transmission mode provided by the embodiment of the present invention determine that method enables to terminal to support pair The transmission mode blind examination of interfered cell.

Based on the same technical idea, the embodiment of the present invention also provides a kind of determining dress of Space Frequency Block Coding SFBC transmission mode It sets, which can be performed above-mentioned Space Frequency Block Coding SFBC transmission mode and determine embodiment of the method.Sky provided in an embodiment of the present invention Frequency block coding SFBC transmission mode determining device is as shown in figure 4, described device includes:

Module 401 is obtained, the channel estimation for obtaining the reception signal on PRB and obtaining according to the reception signal Value；

First determining module 402, for according to the reception signal on the PRB and the letter obtained according to the reception signal Road estimated value determines the first correlation matrix of the reception signal in the RE group in the PRB for carrying out SFBC transmission mode judgement, And the second correlation matrix of the channel estimation value in RE group；

Second determining module 403, for determining according to the characteristic relation between the first correlation matrix and the second correlation matrix Whether the transmission mode of the PRB is SFBC transmission mode.

Wherein, the first determining module 402 can be specifically used for:

In some embodiments of the invention, 2 RE be may include in a RE group, the channel estimation value in the RE group can It with identical as the channel estimation value on a RE in the RE group, or is the flat of the channel estimation value on two RE in the RE group Mean.

First determining module 402, can be specifically used for:

R_H=HH^H

Wherein, the second determining module 403 can be specifically used for:

Determine that the characteristic relation reference quantity between the first correlation matrix and the second correlation matrix, this feature relationship reference quantity are used Whether the characteristic relation between the first correlation matrix of expression and the second correlation matrix meets SFBC mode feature；According to this Characteristic relation reference quantity determines whether the transmission mode of the PRB is SFBC transmission mode.

Further, in some embodiments of the invention, characteristic relation reference quantity may include the first reference quantity and/or Second reference quantity.

Wherein, the second determining module 403 can be specifically used for:

In some embodiments of the invention, the second determining module 403 can determine the first ginseng according to following formula It considers:

And the second reference quantity can be determined according to following formula:

λ=abs (sign (a_y1y2-d_y1y2)-sign(a_H-d_H))

Wherein, λ indicates the second reference quantity.

Further, the second determining module 403 can be specifically used for: according to the first reference quantity, if the following conditions are met it One or combination, it is determined that the transmission mode of the PRB be SFBC transmission mode:

Condition 1, P (γ_i=0) it is greater than default first threshold value；

Condition 2,Less than default second threshold value；

Second determining module 403 can also be specifically used for: according to the second reference quantity, one of if the following conditions are met or group It closes, it is determined that the transmission mode of the PRB is SFBC transmission mode:

Condition 3, P (λ_i=0) it is greater than default third threshold value；

Condition 4,Less than default 4th threshold value；

Second determining module 403 can also be specifically used for: according to the first reference quantity and the second reference quantity, if meeting following item One of part or combination, it is determined that the transmission mode of the PRB is SFBC transmission mode:

Specifically, the second determining module 403 can be used for: be sentenced according to all in the PRB for carrying out SFBC transmission mode It is related to second to calculate the first correlation matrix for characteristic relation between the first correlation matrix and the second correlation matrix of RE group certainly Characteristic relation between matrix meets the percentage of the quantity of the RE group of SFBC mode feature, the quantity of Zhan Suoyou RE group, If the percentage being calculated is greater than preset threshold, it is determined that the transmission mode of the PRB is SFBC transmission mode.

Wherein, a RE group in above-mentioned PRB for carrying out SFBC transmission mode judgement is the PRB according to SFBC transmission mould Two RE encoded jointly when type is encoded.

A kind of Space Frequency Block Coding SFBC transmission mode provided by the embodiment of the present invention determines method and device, can have Body is applied to terminal or is realized by terminal.Referring to Fig. 5, there is Space Frequency Block Coding for what one embodiment of the present of invention provided SFBC transmission mode determines the structural schematic diagram of the terminal of function, the terminal can include: processor 501, memory 502, transmitting-receiving Machine 503 and bus interface.

Processor 501, which is responsible for management bus architecture and common processing, memory 502, can store processor 501 and is holding Used data when row operation.Transceiver 503 is for sending and receiving data under the control of processor 501.

Bus architecture may include the bus and bridge of any number of interconnection, specifically represented by processor 501 one or The various circuits for the memory that multiple processors and memory 502 represent link together.Bus architecture can also will be such as outer Various other circuits of peripheral equipment, voltage-stablizer and management circuit or the like link together, these are all that this field institute is public Know, therefore, it will not be further described herein.Bus interface provides interface.Transceiver 503 can be multiple members Part includes transmitter and transceiver, provides the unit for communicating over a transmission medium with various other devices.Processor 501 are responsible for management bus architecture and common processing, and memory 502 can store processor 501 and be used when executing operation Data.

The Space Frequency Block Coding SFBC transmission mode that the embodiment of the present invention discloses determines process, can be applied to by processor 501, the terminal that memory 502, transceiver 503 and bus interface are constituted, or by processor 501, memory 502, transmitting-receiving The terminal that machine 503 and bus interface are constituted is realized.During realization, Space Frequency Block Coding SFBC transmission mode determines process Each step can pass through the collection of the hardware in the terminal of processor 501, memory 502, transceiver 503 and bus interface composition It is completed at the instruction of logic circuit or software form.Processor 501, memory 502, transceiver 503 and bus interface can With include general processor, digital signal processor, specific integrated circuit, field programmable gate array or other programmable patrol Volume device, perhaps transistor logic, discrete hardware components may be implemented or execute in the embodiment of the present invention discrete gate Disclosed each method, step and logic diagram.General processor can be microprocessor or any conventional processor etc..Knot The step of closing method disclosed in the embodiment of the present invention can be embodied directly in terminal and execute completion, or with the hardware of terminal and Software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only deposit In the storage medium of this fields such as reservoir or electrically erasable programmable memory, register maturation.The storage medium, which is located at, to be deposited Reservoir 502, processor 501 read the information in memory 502, and control transceiver 503 sends and receivees data, complete in conjunction with hardware The process determined at Space Frequency Block Coding SFBC transmission mode.

Specifically, the terminal being made of processor 501, memory 502, transceiver 503 and bus interface, under can be performed Column process:

Processor 501, the channel estimation for obtaining the reception signal on PRB and being obtained according to the reception signal Value；It is also used to determine and use in the PRB according to the reception signal on the PRB and the channel estimation value obtained according to signal is received Estimate in the channel on the first correlation matrix of the reception signal in the RE group for carrying out the judgement of SFBC transmission mode and the RE group Second correlation matrix of evaluation；It is further used for according to the characteristic relation between the first correlation matrix and the second correlation matrix, Whether the transmission mode for determining the PRB is SFBC transmission mode.

The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.

These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, it is created once a person skilled in the art knows basic Property concept, then additional changes and modifications may be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as It selects embodiment and falls into all change and modification of the scope of the invention.

Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to include these modifications and variations.

Claims

1. a kind of Space Frequency Block Coding SFBC transmission mode determines method characterized by comprising

According to the reception signal on the PRB and the channel estimation value obtained according to the reception signal, using the first formula Determine the first Correlation Moment of the reception signal in the resource unit RE group in the PRB for carrying out SFBC transmission mode judgement Battle array, and the second correlation matrix for using the second formula to determine the channel estimation value in the RE group；

According to the characteristic relation between first correlation matrix and second correlation matrix, the transmission mould of the PRB is determined Whether formula is SFBC transmission mode；

Wherein, first formula are as follows:

Second formula are as follows:

R_H=HH^H

Wherein, R_y1y2Indicate the first correlation matrix, y₁And y₂Respective reception signal on two RE is respectively indicated in a RE group, []^HIt is the point multiplication operation of matrix for the associate matrix of matrix；R_HIndicate that the second correlation matrix, H indicate in a RE group Channel estimation value, the channel estimation value in a RE group is identical as the channel estimation value on a RE in the RE group or is The average of channel estimation value in the RE group on two RE.

2. the method as described in claim 1, which is characterized in that described related to described second according to first correlation matrix Characteristic relation between matrix determines whether the transmission mode of the PRB is SFBC transmission mode, comprising:

Determine the characteristic relation reference quantity between first correlation matrix and second correlation matrix, the characteristic relation ginseng It considers for indicating whether the characteristic relation between first correlation matrix and second correlation matrix meets SFBC transmission The aspect of model；

3. method according to claim 2, which is characterized in that the characteristic relation reference quantity include the first reference quantity and/or Second reference quantity；

Characteristic relation reference quantity between determination first correlation matrix and second correlation matrix, comprising:

It is respectively compared the real part and the second correlation matrix auxiliary diagonal element of the first correlation matrix auxiliary diagonal element Real part whether symbol consistent and imaginary part and second correlation matrix of the first correlation matrix auxiliary diagonal element Whether the symbol of the imaginary part of auxiliary diagonal element is consistent, and the result compared twice is quantified as the first reference quantity；With/ Or

The size relation being respectively compared between the first correlation matrix the elements in a main diagonal and the second correlation matrix master The result compared twice is quantified as the second reference quantity by the size relation between diagonal entry.

4. method as claimed in claim 3, which is characterized in that the result compared twice is quantified as the first reference Amount, comprising:

The first reference quantity is determined according to following formula:

γ=abs (sign (real (b_y1y2))-sign(real(b_H)))+abs(sign(imag(b_y1y2))-sign(imag (b_H)))

Wherein, γ indicates the first reference quantity, and abs () is ABS function, and sign () is sign function, and real () is to plural number Real part operation is taken, imag () is to take imaginary-part operation to plural number, and the first correlation matrix of the reception signal in a RE group isSecond correlation matrix of the channel estimation value in one RE group is

The result compared twice is quantified as the second reference quantity, comprising:

The second reference quantity is determined according to following formula:

λ=abs (sign (a_y1y2-d_y1y2)-sign(a_H-d_H))

Wherein, λ indicates the second reference quantity.

5. method as claimed in claim 4, which is characterized in that according to first reference quantity, determine the transmission mould of the PRB Whether formula is SFBC transmission mode, comprising:

Condition 1, P (γ_i=0) it is greater than default first threshold value；

Condition 2,Less than default second threshold value；

Condition 3, P (λ_i=0) it is greater than default third threshold value；

Condition 4,Less than default 4th threshold value；

According to first reference quantity and second reference quantity, determine whether the transmission mode of the PRB is SFBC transmission mould Formula, comprising:

Wherein, P (γ_i=0) the first reference quantity for a RE group in all RE groups of a PRB is equal to 0 probability, P (λ_i= 0) the second reference quantity for a RE group in all RE groups of a PRB is equal to 0 probability, and N indicates all RE groups of a PRB Quantity,Indicate the cumulative of respective first reference quantity of all RE groups of a PRB and,Indicate one Respective second reference quantity of all RE groups of PRB cumulative and, i, N are the integer greater than 0.

6. the method as described in claim 1, which is characterized in that described related to described second according to first correlation matrix Characteristic relation between matrix determines whether the transmission mode of the PRB is SFBC transmission mode, comprising:

According to all for carrying out the first correlation matrix and the second Correlation Moment of the RE group of SFBC transmission mode judgement in the PRB Characteristic relation between battle array, the characteristic relation calculated between the first correlation matrix and the second correlation matrix meet SFBC mode The quantity of the RE group of feature, account for all RE groups quantity percentage, if the percentage being calculated is greater than default threshold Value, it is determined that the transmission mode of the PRB is SFBC transmission mode.

7. such as method described in any one of claims 1 to 6, which is characterized in that for carrying out SFBC transmission mould in the PRB One RE group of formula judgement is two RE encoded jointly when the PRB is encoded according to SFBC mode.

8. a kind of Space Frequency Block Coding SFBC transmission mode determining device characterized by comprising

Module is obtained, the channel for obtaining the reception signal on Physical Resource Block PRB and obtaining according to the reception signal Estimated value；

First determining module, for estimating according to the reception signal on the PRB and according to the channel that the reception signal obtains Evaluation determines the reception in the resource unit RE group in the PRB for carrying out SFBC transmission mode judgement using the first formula First correlation matrix of signal, and the second correlation matrix for using the second formula to determine the channel estimation value in the RE group；

Second determining module, for according to the characteristic relation between first correlation matrix and second correlation matrix, really Whether the transmission mode of the fixed PRB is SFBC transmission mode；

Wherein, first formula are as follows:

Second formula are as follows:

R_H=HH^H

9. device as claimed in claim 8, which is characterized in that second determining module is specifically used for:

10. device as claimed in claim 9, which is characterized in that the characteristic relation reference quantity include the first reference quantity and/or Second reference quantity；

Second determining module, is specifically used for:

11. device as claimed in claim 10, which is characterized in that second determining module is specifically used for:

The first reference quantity is determined according to following formula:

The second reference quantity is determined according to following formula:

λ=abs (sign (a_y1y2-d_y1y2)-sign(a_H-d_H))

Wherein, λ indicates the second reference quantity.

12. device as claimed in claim 11, which is characterized in that second determining module is specifically used for: according to described One reference quantity, one of if the following conditions are met or combination, it is determined that the transmission mode of the PRB is SFBC transmission mode:

Condition 1, P (γ_i=0) it is greater than default first threshold value；

Condition 2,Less than default second threshold value；

Second determining module, is specifically used for: according to second reference quantity, one of if the following conditions are met or combination, then The transmission mode for determining the PRB is SFBC transmission mode:

Condition 3, P (λ_i=0) it is greater than default third threshold value；

Condition 4,Less than default 4th threshold value；

Second determining module, is specifically used for: according to first reference quantity and second reference quantity, if meeting following item One of part or combination, it is determined that the transmission mode of the PRB is SFBC transmission mode:

13. device as claimed in claim 8, which is characterized in that second determining module is specifically used for:

14. the device as described in any one of claim 8 to 13, which is characterized in that for carrying out SFBC transmission in the PRB One RE group of mode adjudging is two RE encoded jointly when the PRB is encoded according to SFBC mode.