CN106941696A

CN106941696A - A kind of interference elimination method and equipment

Info

Publication number: CN106941696A
Application number: CN201610005353.XA
Authority: CN
Inventors: 邢金强; 马帅
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2016-01-05
Filing date: 2016-01-05
Publication date: 2017-07-11
Anticipated expiration: 2036-01-05
Also published as: CN106941696B

Abstract

The invention discloses a kind of interference elimination method and equipment, methods described includes：When serving BS judge first terminal UE by second terminal UE2 co-channel interference when, the serving BS to interference base station send interference request；The serving BS receives the disturbance response that the interference base station is sent；The serving BS obtains the serving BS to the channel matrix H of the channel between the UE₁；The serving BS is according to the H₁, the S₂With the H₂It is determined that reconstruct interference signal I₂；The serving BS obtains the first sending signal S₀, the S₀For the serving BS, be sent to the UE is H without channel matrix originally₁The signal of the decline of channel；The serving BS is by the S₀With the I₂Difference be sent to the UE as the second sending signal.

Description

A kind of interference elimination method and equipment

Technical field

The present invention relates to wireless technology, more particularly to a kind of interference elimination method and equipment.

Background technology

It is in Long Term Evolution (LTE) network to use identical networking mode due to the scarcity of frequency spectrum resource more, I.e. multiple cells use same frequency, can so save frequency spectrum resource, but are cells the problem of bring Edge customer is easy for can be by stronger adjacent area co-channel interference I, as Figure 1-1.Therefore interference disappears Except as a key technology in LTE system.

Interference is eliminated according to whether needing network offer auxiliary information to be divided into two kinds, and the first is terminal itself Interference is eliminated, i.e. the AF panel cancellation receiver of terminal itself, and second is that terminal is entered using network assistance Row AF panel is eliminated, that is, needs the AF panel cancellation receiver of network assistance.Wherein terminal itself is dry Disturb elimination to refer in the case where not any network-assist information is provided, terminal voluntarily estimated disturbance signal I And eliminated, but interference eradicating efficacy is bad；The terminal of network assistance suppresses elimination and refers to that network side is provided Some auxiliary information such as modulation systems related to interference etc., are reconstructed and are eliminated by terminal-pair interference, but Intractability and power consumption of terminal etc. are increased, Consumer's Experience is influenceed.

Existing interference cancellation scheme is required to that interference signal is reconstructed in end side, then from reception letter Eliminated in number, to reach the purpose for eliminating interference, but the reconstruct and elimination of interference are whether not based on Network-assist information is required to very big calculating processing expense, causes the power consumption and cost increase of terminal.

The content of the invention

In view of this, the embodiment of the present invention provides one to solve at least one problem present in prior art Kind of interference elimination method and equipment, can by the way that directly interference signal is reconstructed and eliminated in network side, The processing expense of end side is reduced, lift the Consumer's Experience of terminal reduces cost simultaneously.

What the technical scheme of the embodiment of the present invention was realized in：

In a first aspect, the embodiment of the present invention provides a kind of interference elimination method, methods described includes：

When serving BS judge first terminal UE by second terminal UE2 co-channel interference when, the service base Stand and send interference request to interference base station, the interference request is used to ask the interference base station and the UE2 The downstream signal S of communication₂And the interference base station is to the channel matrix H of the channel between the UE₂, institute The base station of cell of the interference base station belonging to the UE2 is stated, the serving BS is small belonging to the UE The base station in area；

The serving BS is received to be carried in the disturbance response that the interference base station is sent, the disturbance response The S₂And the H₂；

The serving BS obtains the serving BS to the channel matrix H of the channel between the UE₁；

The serving BS is according to the H₁, the S₂With the H₂It is determined that reconstruct interference signal I₂, it is described Reconstruct interference signal I₂For reconstruct the interference base station to the interference signal of the UE；

The serving BS obtains the first sending signal S₀, the S₀Institute is sent to for the serving BS originally State UE is H without channel matrix₁The signal of the decline of channel；

The serving BS is by the S₀With the I₂Difference be sent to the UE as the second sending signal S.

Second aspect, the embodiment of the present invention provides a kind of interference elimination method, and methods described includes：

First terminal UE knows mesh by measuring the Signal to Interference plus Noise Ratio SINR distributed in resource Before the interference type that is subject to；

When the interference type is co-channel interference, co-channel interference is carried on interference feedback message by the UE In；

The UE sends the interference feedback message to serving BS；

The UE receives the second sending signal S, the second sending signal S=that the serving BS is sent (S₀-I₂)*H₁, wherein the S0 is the non-channel square that the serving BS is sent to the UE originally Battle array is H₁The signal of the decline of channel, the H₁For the serving BS to the channel between the UE Channel matrix, the I₂For reconstruct the interference base station to the interference signal of the UE.

The third aspect, the embodiment of the present invention provides a kind of base station, and the base station includes the first transmitting element, the One receiving unit, first acquisition unit, determining unit, second acquisition unit and the second transmitting element, wherein：

First transmitting element, co-channel interferences of the first terminal UE by second terminal UE2 is judged for working as When, interference request is sent to interference base station, the interference request is used to ask the interference base station and the UE2 The downstream signal S of communication₂And the interference base station is to the channel matrix H of the channel between the UE₂, institute Interference base station is stated for the UE₂The base station of affiliated cell, the serving BS is small belonging to the UE The base station in area；

First receiving unit, for receiving the disturbance response that the interference base station is sent, the interference rings The S is carried in answering₂And the H₂；

The first acquisition unit, for obtaining the serving BS to the channel of the channel between the UE Matrix H₁；

The determining unit, for according to the H₁, the S₂With the H₂It is determined that reconstruct interference signal I₂, The reconstruct interference signal I₂For reconstruct the interference base station to the interference signal of the UE；

The second acquisition unit, is the serving BS for obtaining the first sending signal S0, the S0 Originally be sent to the UE is H without channel matrix₁The signal of the decline of channel；

Second transmitting element, for by the S0 and the I₂Difference sent out as the second sending signal S Give the UE.

Fourth aspect, the embodiment of the present invention provides a kind of terminal, and the terminal is taken including measuring unit, second Tape cell, the 3rd transmitting element and the 3rd receiving unit, wherein：

The measuring unit, for by measuring the Signal to Interference plus Noise Ratio SINR distributed in resource Know the interference type being now subjected to；

Described second carries unit, for when the interference type is co-channel interference, co-channel interference to be carried In interference feedback message；

3rd transmitting element, for sending the interference feedback message to serving BS；

3rd receiving unit, it is described for the second sending signal S for receiving that the serving BS sends Second sending signal S=(S₀-I₂)*H₁, wherein the S₀The UE is sent to for the serving BS originally Without channel matrix be H₁The signal of the decline of channel, the H1 is the serving BS to the UE Between channel channel matrix, the I₂For reconstruct the interference base station to the interference signal of the UE.

A kind of interference elimination method provided in an embodiment of the present invention and equipment, wherein, when serving BS judges One terminal UE by second terminal UE2 co-channel interference when, the serving BS to interference base station send disturb Request；The serving BS receives the disturbance response that the interference base station is sent；The serving BS obtains institute Serving BS is stated to the channel matrix H of the channel between the UE₁；The serving BS is according to the H₁、 The S₂With the H₂It is determined that reconstruct interference signal I₂；The serving BS obtains the first sending signal S0, What the S0 was that the serving BS is sent to the UE originally is H without channel matrix₁The decline of channel Signal；The serving BS is by the S₀With the I₂Difference be sent to as the second sending signal S it is described UE；It so, it is possible, by the way that directly interference signal is reconstructed and eliminated in network side, to reduce end side Expense is handled, lift the Consumer's Experience of terminal reduces cost simultaneously.

Brief description of the drawings

Fig. 1-1 is the schematic diagram of correlation technique co-channel interference；

Network carries out the schematic diagram of interference elimination with terminal joint in Fig. 1-2 embodiment of the present invention；

Fig. 1-3 realizes schematic flow sheet for the interference elimination method of the embodiment of the present invention one；

Fig. 2-1 is network and the schematic diagram of terminal joint interference elimination in the embodiment of the present invention two；

Fig. 2-2 realizes schematic flow sheet for the interference elimination method of the embodiment of the present invention two；

Fig. 3 is the composition structural representation of the base station of the embodiment of the present invention three；

Fig. 4 is the composition structural representation of the terminal of the embodiment of the present invention three.

Embodiment

To simplify description, discussed below by taking two cells as an example, but scheme is also applied for multiple cell scene. Network carries out the schematic diagram of interference elimination with terminal joint in Fig. 1-2 embodiment of the present invention, as shown in Figure 1-2, Consider two cells, cell residing for terminal is Cell-1, and adjacent area is Cell-2.And the reception signal of terminal is：

R=S+I+N (0-1)；

In formula (0-1), R is terminal received signals, and S is having that the Cell-1 that terminal is received launches The adjacent area Cell-2 received with signal, I for terminal UE interference signal, N is ambient thermal noise.

In existing technical scheme, the interference of terminal-pair adjacent area is estimated and reconstruct obtains I₁, therefore to this Signal eliminate obtaining formula (0-2)；

R-I₁=S+ (I-I₁)+N (0-2)。

From formula (0-2) as can be seen that if adjacent area interference reconstructs accurately so I=I₁, therefore eliminate Signal afterwards is R-I₁=S+N, i.e. adjacent area interference are eliminated.

In embodiments of the present invention, then carry out for the interference that is brought to adjacent area Cell-2 by base station Cell-1 direct Eliminate, i.e., the interference signal that Cell-2 is brought is reconstructed by base station Cell-1 and obtains I₂, and in transmitting letter Cut in number.Signal channel decline after cutting, the descending letter that the Cell-1 that last terminal is received is sent Number be formula (0-3)：

S₁=S-I₁(0-3)；

In formula (0-3), the useful signal that S receives for terminal, I₁For being subtracted that terminal is received Interference, the interference I that adjacent area is brought will and I₁Offset, i.e. terminal received signals R is formula (0-4)：

R=S₁+ I+N=(S-I₁)+I+N=S+ (I-I₁)+N (0-4)；

From formula (0-4) as can be seen that so if Cell-1 is accurate to adjacent area Cell-2 Interference Estimation Words, then interference will be completely eliminated, i.e., now I=I₁, R=S+N, reached eliminate adjacent area interference mesh 's.

Compared to original scheme, this programme is directly eliminated in base station side to interference, and advantage includes following aspect： 1) there is interface between serving BS Cell-1 and neighbor base station Cell-2, neighbor base station can with base station in service sector To interact in real time, therefore the interference signal reconstruct of base station side can be more prone to.2) it is to reach serving cell Accurate estimation of the base station to interference, terminal can be estimated to disturb the information needed with report network, be estimated with strengthening interference Effect is counted, more accurately.3) base station disposal ability itself is powerful, and interference is reconstructed and disappeared in base station side Except more easily realizing, and terminal is increased without any cost.

The technical solution of the present invention is further elaborated with specific embodiment below in conjunction with the accompanying drawings.

Embodiment one

Based on foregoing embodiment, the embodiment of the present invention provides a kind of interference elimination method, applied to base station, The function that this method is realized can be realized by the processor caller code in base station, certain program Code can be stored in computer-readable storage medium, it is seen then that the base station at least includes processor and storage medium.

Fig. 1-3 realizes schematic flow sheet for the interference elimination method of the embodiment of the present invention one, as Figure 1-3, This method includes：

Step S101, first terminal UE are by measuring the Signal to Interference plus Noise Ratio distributed in resource (SINR) interference type being now subjected to is known；

Step S102, when the interference type is co-channel interference, co-channel interference is carried on dry by the UE Disturb in feedback message；

Here, in the embodiment of the present invention, methods described also includes：When the interference type is co-channel interference, Flow terminates.

Step S103, the UE send the interference feedback message to serving BS；

Step S104, the serving BS receives the interference feedback message that the UE is sent, and the interference is anti- Interference type is carried in feedback message, the interference type includes co-channel interference and environmental disturbances；

Step S105, the serving BS judges whether the UE is had according to the interference feedback message Co-channel interference；

Step S106, when serving BS judge first terminal UE by second terminal UE2 co-channel interference when, The serving BS sends interference request to interference base station；

Here, in the embodiment of the present invention, methods described includes：The serving BS obtains the work of the UE Working frequency；The working frequency is carried in the interference request by the serving BS, carries the work The interference request of working frequency is used to control the second terminal UE2 that the interference base station is interfered, and request The S₂And the H₂。

Here, the interference request is used to ask the downstream signal that the interference base station communicates with the UE2 S₂And the interference base station is to the channel matrix H of the channel between the UE₂, the interference base station is institute The base station of the cell belonging to UE2 is stated, the serving BS is the base station of the cell belonging to the UE；

Step S107, the serving BS receives the disturbance response that the interference base station is sent；

Here, the S is carried in the disturbance response₂And the H₂；

Step S108, the serving BS obtains the serving BS to the channel of the channel between the UE Matrix H₁；

Step S109, the serving BS is according to the H₁, the S₂With the H₂It is determined that reconstruct interference letter Number I₂；

Here, the reconstruct interference signal I₂For reconstruct the interference base station to the interference signal of the UE；

Here, the serving BS is according to the H₁, the S₂With the H₂It is determined that reconstruct interference signal I₂, Including：According to I₂=(S₂*H₂)/H₁Obtain weight interference signal I₂。

Step S110, the serving BS obtains the first sending signal S₀；

Here, the S₀For the serving BS, be sent to the UE is H without channel matrix originally₁ The signal of the decline of channel；

Step S111, the serving BS is by the S₀With the I₂Difference sent out as the second sending signal S Give the UE.

Step S112, the UE receive the second sending signal S that the serving BS is sent；

Here, the second sending signal S=(S₀-I₂)*H₁, wherein the S₀It is former for the serving BS Originally be sent to the UE is H without channel matrix₁The signal of the decline of channel, the H₁For the clothes Base station be engaged in the channel matrix of the channel between the UE, the I₂For reconstruct the interference base station to institute State UE interference signal.

Embodiment two

The embodiment of the present invention will provide a kind of interference elimination method, and Fig. 2-1 is network in the embodiment of the present invention three The schematic diagram eliminated is disturbed with terminal joint, in order to preferably illustrate, is introduced first in Fig. 2-1 Involved each symbol and its implication：

Cell-1：UE serving cell；

Cell-2：Interfered cell, is also UE2 serving cell；

UE：Targeted customer；

UE₂：There is the user of interference relationships with UE；

S₀：Serving cell Cell-1 is handed down to UE useful signal, the non-channel H of the signal₁Decline；

S：The useful signal that the serving cell that terminal UE is received is issued, i.e. S=S₀*H₁；

H₁：Channel matrix of the serving cell Cell-1 base stations to UE；

S₂：The downstream signal that interfered cell Cell-2 communicates with user UE2；

H₂：Interfered cell Cell-2 to UE channel matrix；

I：The interference that interfered cell Cell-2 is brought to UE, the interference is communicated down by Cell-2 with UE2 Row signal is caused, i.e. I=S₂*H₂；

I₂：Interfered cell Cell-2 will be handed down to UE2 signal S₂Sample is sent to serving cell Cell-1, The interference reconstructed by Cell-1；

Interactive information：Interfered cell Cell-2 judges interference user and estimation channel matrix H₂Required information；

I₁：The interference signal I that the being serviced cell Cell-1 that UE is received is cut₂Theory after channel decline Signal, i.e. I₁=I₂*H₁；

S₁：The signal that the serving cell Cell-1 that terminal is received is issued, wherein having removed in transmission end of base station The interference signal I of estimation₂；

According to Fig. 2-1, the interference cancellation algorithm of embodiment of the present invention proposition is described below, can be according to formula The reception signal R of (3-1) computing terminal：

R=S₁+I+N；

=(S-I₁)+I+N；

=S+ (I-I₁)+N；

=S₀*H₁+(I-I₂*H₁)+N；

=S₀*H₁+(S₂*H₂-I₂*H₁)+N； (3-1)；

So, in order to eliminate the interference of adjacent area, it is necessary to by above-mentioned (S₂*H₂-I₂*H₁) minimize, wherein S₂Letter Number for Cell-2 send known signal.Channel condition H₁And H₂Antenna for base station H can be further broken into_bs、 Wireless space propagation conditions H_fs, terminal reception antenna H_ue.Therefore S₂*H₂-I₂*H₁It can further be write as formula (3-2)：

S₂*H₂-I₂*H₁=S₂*H_bs2*Hfs₂*H_ue-I₂*H_bs1*H_fs1*H_ue；

=(S₂*H_bs2*H_fs2-I₂*H_bs1*H_fs1)*H_ue； (3-2)；

In formula (3-2), H_ueDo not influence to minimize and calculate, H_bs1And H_bs2It is that antenna for base station is known Condition, H_fs1Cell-1 reference signal acquisition can be sent to by UE, therefore need to only obtain Cell-2 and is arrived UE down channel matrix H_fs2Can Reasonable adjustment I₂Signal is by S₂*H₂-I₂*H₁Turn to 0.

Understood by the channel reciprocity in time division duplex (Time Division Duplexing, TDD) system, Cell-2 to UE downstream channel conditions are identical with UE to Cell-2 up channel condition.Therefore Cell-1 The interface notification Cell-2 that the uplink reference signals relevant information that UE is sent passes through Cell-1 and Cell-2. Cell-2 can be demodulated and channel estimation according to these information to the UE uplink reference signals sent, so as to obtain UE to Cell-2 channel condition is obtained, H is so far obtained_fs2Channel condition.Cell-1 issue it is useful The adjacent area interference that corresponding interference signal I2 is cut in signal to be subject to UE is eliminated.Therefore, eventually Terminate collection of letters R=S₀*H₁+(S₂*H₂-I₂*H₁) (S in+N₂*H₂-I₂*H₁) can obtain, and disappeared Except being eliminated for 0, i.e. co-channel interference.

Based on foregoing Fig. 2-1, the embodiment of the present invention provides a kind of interference elimination method, and Fig. 2-2 is the present invention Embodiment three interference elimination method realizes schematic flow sheet, and as shown in Fig. 2-2, this method includes：

Step S201：UE detections adjacent area interference and back services cell Cell-1 base stations；

Here, UE is by measuring the SINR (Signal to Interference plus Noise Ratio, Signal to that distribute in resource Interference plus Noise Ratio) and the Power Spectrum Distribution information of interference signal would know that what is be now subjected to The situation of interference signal, specifically, illustrates now stronger by the external world when SINR is less than certain thresholding Interference, and further judge that current interference signal belongs to co-channel interference or ring by Power Spectrum Distribution information Border noise, when Power Spectrum Distribution information is that typical bands are distributed, judges the interference being now subject to be dry with frequency Disturb.UE is by the time domain distributed intelligence of interference signal and frequency domain distribution information and interference strength information reporting to clothes Be engaged in base station Cell-1.

Step S202：Cell-1 base stations are consulted with adjacent area Cell-2 base stations and location interference is originated；

Here, Cell-1 base stations are received after UE disturbed condition report, by the time domain distributed intelligence of interference signal The base station (Cell-2 base stations) of adjacent area is notified with frequency domain distribution information and strength information, the base station of adjacent area passes through this A little information can position the user UE2 for causing to disturb Cell-1.Because UE detects co-channel interference, Just there is transmitting-receiving of the user also in the time domain and the enterprising row information of frequency domain resource explanation adjacent area.Cell-2 base stations can be with Find this community user UE2 for causing to disturb the UE.

Step S203：Cell-1 base stations the relevant information that UE uplink reference signals are demodulated is informed into Cell-2 bases Stand；

Here, UE uplink reference signals demodulation relevant information configured by Cell-1 base stations, it is described on The relevant information of row demodulation reference signal includes running time-frequency resource, modulation system and the coding staff of uplink reference signals Formula etc..

Here, Cell-1 base stations are estimated to obtain UE to Cell-1 up channel using UE uplink reference signals Condition, is known by channel reciprocity, and Cell-1 obtains down channel matrix H₁.Cell-2 base stations are to channel square Battle array H₂Estimation need demodulate UE uplink reference signals, Cell-1 by the interface between Cell-2 will solve Adjust running time-frequency resource of the relevant information as where UE uplink reference signals needed for uplink reference signals, modulation methods Formula, coded system etc. inform Cell-2 base stations.

Step S204：Cell-2 base stations complete its channel condition H2 between UE estimation；

Here, Cell-2 base stations are according to the running time-frequency resource obtained from Cell-1 base stations, modulation system and coding staff The estimation of relevant information demodulation UE uplink reference signals and completion to channel condition H2 of the demodulation such as formula.

Step S205：Cell-2 base stations are by channel condition H₂And its interference signal sample issued notifies Cell-1 Base station；

Here, Cell-2 base stations are by channel condition H₂And interference sample notifies Cell-1, is calculated for Cell-1 Need the disturbance estimation signal I cut₂。

Step S206：Cell-1 base stations utilize channel condition H₂And interference signal sample carries out interference and eliminates computing Obtain the disturbance estimation signal I for needing to cut₂；

Here, Cell-1 is to I₂Estimation by by (S₂*H₂-I₂*H₁) minimize i.e. obtained equal to 0. S₂*H₂-I₂*H₁=0, wherein except I₂Outer information would know that, therefore can obtain disturbance estimation signal I₂。

Step S207：Cell-1 base stations are sent to signal and cut disturbance estimation signal I₂；

Here, Cell-1 is sent to UE useful signal S₀The interference letter that step S206 calculating is obtained will be cut Number I₂, then by residual signal S₀-I₂It is sent to UE.

Step S208：The signal and adjacent area that UE receptions Cell-1 is issued disturb and it are completed to eliminate.

Here, UE receives the downstream signal S of step S207 transmissions₀-I₂Channel H₁Signal after decline S₁=S-I₁, wherein S is the useful signal S that base station is sent₀Channel H₁Signal after decline, I₁It is Cell-1 The interference signal I that base station end is cut₂Channel H₁Signal after decline.Therefore S₁=S-I₁=S₀*H₁-I₂*H₁。 The signal is overlapped with adjacent area interference signal I to be obtained the actual reception signal R of terminal and is：

R=S₁+I+N

=S₀*H₁-I₂*H₁+I+N

=S₀*H₁-I₂*H₁+S₂*H₂+N

=S₀*H₁+(S₂*H₂-I2*H₁)+N

Known by step S206, S₂*H₂-I₂*H₁=0, therefore R=S₀*H₁+ N, co-channel interference therein is disappeared Remove.So far complete rear co-channel interference eliminates process.

From figure 2 above-1 and Fig. 2-2 as can be seen that the embodiment of the present invention provides a kind of interference elimination method, This method is actually a kind of network and terminal joint interference cancellation scheme, and the program in base station side by estimating Adjacent area suffered by terminal is disturbed and it is reconstructed and eliminated by serving cell, by being done in network side The interference elimination cost of terminal can be reduced by disturbing the mode of elimination.In the embodiment of the present invention, adjacent area is to itself and end The estimation of propagation channel employs the mode of serving cell auxiliary, i.e. serving cell by the up solution of terminal between end Adjust relevant information to inform adjacent area, terminal is carried out to its uplink channel estimation by adjacent area, and utilize TDD system Up-downgoing reciprocity reach to down channel estimate effect.In the embodiment of the present invention, serving cell is to neighbour The estimation of area's interference employs the mode of adjacent area auxiliary, i.e. adjacent area and completed after it is estimated with terminal room down channel The descending interference signal of this channel condition and transmission is informed into serving cell, serving cell utilizes these information pair Adjacent area co-channel interference signal is estimated suffered by terminal, is directly cut in the useful signal that serving cell is issued Co-channel interference estimation signal realizes that the interference of end side is eliminated.

Embodiment three

Based on foregoing embodiment, the embodiment of the present invention provides base station institute in a kind of base station, the embodiment of the present invention Including each unit can be realized by the processor in base station, certainly also can pass through specific logic electricity Realize on road；During specific embodiment, processor can be central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA) etc..

Fig. 3 is the composition structural representation of the base station of the embodiment of the present invention three, as shown in figure 3, the base station 300 Including the first transmitting element 301, the first receiving unit 302, first acquisition unit 303, determining unit 304, The transmitting element 306 of second acquisition unit 305 and second, wherein：

First transmitting element 301, same frequencies of the first terminal UE by second terminal UE2 is judged for working as During interference, interference request is sent to interference base station, the interference request is used to ask the interference base station and institute The downstream signal S2 and the interference base station of UE2 communications are stated to the channel square of the channel between the UE Battle array H2, the interference base station is the base station of the cell belonging to the UE2, and the serving BS is the UE The base station of affiliated cell；

First receiving unit 302, it is described dry for receiving the disturbance response that the interference base station is sent Disturb in response and carry the S₂And the H₂；

The first acquisition unit 303, for obtaining the serving BS to the letter of the channel between the UE Road matrix H₁；

The determining unit 304, for according to the H₁, the S₂With the H₂It is determined that reconstruct interference letter Number I₂, the reconstruct interference signal I₂For reconstruct the interference base station to the interference signal of the UE；

The second acquisition unit 305, for obtaining the first sending signal S₀, the S₀For the service base What script of standing was sent to the UE is H without channel matrix₁The signal of the decline of channel；

Second transmitting element 306, for by the S₀With the I₂Difference be used as the second sending signal S It is sent to the UE.

In the embodiment of the present invention, the determining unit, for according to I₂=(S₂*H₂)/H₁Disturbed again Signal I₂。

In the embodiment of the present invention, the base station also includes the second receiving unit and judging unit, wherein：

Second receiving unit, for receiving the interference feedback message that the UE is sent, the interference is anti- Interference type is carried in feedback message, the interference type includes co-channel interference and environmental disturbances；

The judging unit, for according to the interference feedback message judge the UE whether by have with frequency Interference.

In the embodiment of the present invention, the base station includes the 3rd acquiring unit and carries unit, wherein

3rd acquiring unit, the working frequency for obtaining the UE；

The carrying unit, for the working frequency to be carried in the interference request, is carried described The interference request of working frequency is used to control the second terminal UE2 that the interference base station is interfered, and please Seek the S₂And the H₂。

It need to be noted that be：The description of above base station embodiment, the description with above method embodiment is Similar, with the similar beneficial effect of same embodiment of the method, therefore do not repeat.For base station of the present invention The ins and outs not disclosed in embodiment, refer to the description of the inventive method embodiment and understand, to save Length, therefore repeat no more.

Example IV

Based on foregoing embodiment, the embodiment of the present invention provides terminal institute in a kind of base station, the embodiment of the present invention Including each unit can be realized by the processor in base station, certainly also can pass through specific logic electricity Realize on road；During specific embodiment, processor can be central processing unit (CPU), microprocessor (MPU), digital signal processor (DSP) or field programmable gate array (FPGA) etc..

Fig. 4 is the composition structural representation of the terminal of the embodiment of the present invention three, as shown in figure 4, the terminal 400 Unit 402, the 3rd transmitting element 403 and the 3rd receiving unit 404 are carried including measuring unit 401, second, Wherein：

The measuring unit 401, for by measuring the Signal to Interference plus Noise Ratio distributed in resource SINR knows the interference type being now subjected to；

Described second carries unit 402, for when the interference type is co-channel interference, by co-channel interference It is carried in interference feedback message；

3rd transmitting element 403, for sending the interference feedback message to serving BS；

3rd receiving unit 404, for receiving the second sending signal S that the serving BS is sent, institute State the second sending signal S=(S₀-I₂)*H₁, wherein the S₀It is sent to originally for the serving BS described UE is H without channel matrix₁The signal of the decline of channel, the H₁It is the serving BS to described The channel matrix of channel between UE, the I₂The interference of the UE is believed for the interference base station of reconstruct Number.

In the embodiment of the present invention, the terminal also includes end unit, for being with frequency when the interference type During interference, flow terminates.

It need to be noted that be：The description of above terminal embodiment, the description with above method embodiment is Similar, with the similar beneficial effect of same embodiment of the method, therefore do not repeat.For terminal of the present invention The ins and outs not disclosed in embodiment, refer to the description of the inventive method embodiment and understand, to save Length, therefore repeat no more.

It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text means and real Apply the relevant special characteristic of example, structure or characteristic include at least one embodiment of the present invention in.Therefore, " in one embodiment " or " in one embodiment " occurred everywhere in entire disclosure not necessarily refers to Identical embodiment.In addition, these specific feature, structure or characteristics can be combined in any suitable manner In one or more embodiments.It should be understood that in various embodiments of the present invention, the sequence of above-mentioned each process Number size be not meant to the priority of execution sequence, the execution sequence of each process should be patrolled with its function and inherence Collect and determine, any limit is constituted without tackling the implementation process of the embodiment of the present invention.The embodiments of the present invention Sequence number is for illustration only, and the quality of embodiment is not represented.

It should be noted that herein, term " comprising ", "comprising" or its any other variant meaning Covering including for nonexcludability, so that process, method, article or dress including a series of key elements Putting not only includes those key elements, but also other key elements including being not expressly set out, or also including being This process, method, article or the intrinsic key element of device.In the absence of more restrictions, by The key element that sentence "including a ..." is limited, it is not excluded that in the process including the key element, method, thing Also there is other identical element in product or device.

, can in several embodiments provided herein, it should be understood that disclosed apparatus and method To realize by another way.Apparatus embodiments described above are only schematical, for example, institute The division of unit is stated, only a kind of division of logic function there can be other dividing mode when actually realizing, Such as：Multiple units or component can be combined, or be desirably integrated into another system, or some features can be neglected Slightly, or do not perform.In addition, the coupling each other of shown or discussed each part or directly coupling Close or communication connection can be by some interfaces, the INDIRECT COUPLING or communication connection of equipment or unit, can Be it is electrical, machinery or other forms.

The above-mentioned unit illustrated as separating component can be or may not be it is physically separate, as The part that unit is shown can be or may not be physical location；Both a place can be located at, also may be used To be distributed on multiple NEs；Part or all of unit therein can be selected according to the actual needs Realize the purpose of this embodiment scheme.

In addition, each functional unit in various embodiments of the present invention can be fully integrated into a processing unit, Can also be each unit individually as a unit, can also two or more units be integrated in one In individual unit；Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ hardware adds soft The form of part functional unit is realized.

One of ordinary skill in the art will appreciate that：Realize that all or part of step of above method embodiment can To be completed by the related hardware of programmed instruction, foregoing program can be stored in embodied on computer readable storage In medium, the program upon execution, performs the step of including above method embodiment；And foregoing storage is situated between Matter includes：Movable storage device, read-only storage (Read Only Memory, ROM), magnetic disc or CD etc. is various can be with the medium of store program codes.

Or, if the above-mentioned integrated unit of the present invention is realized using in the form of software function module and as independently Production marketing or in use, can also be stored in a computer read/write memory medium.Based on so Understanding, the part that the technical scheme of the embodiment of the present invention substantially contributes to prior art in other words can To be embodied in the form of software product, the computer software product is stored in a storage medium, bag Some instructions are included to so that a computer equipment (can be personal computer, server or network Equipment etc.) perform all or part of each of the invention embodiment methods described.And foregoing storage medium bag Include：Movable storage device, ROM, magnetic disc or CD etc. are various can be with the medium of store program codes.

The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited to This, any one skilled in the art the invention discloses technical scope in, can readily occur in Change or replacement, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should It is defined by the scope of the claims.

Claims

1. a kind of interference elimination method, it is characterised in that methods described includes：

2. according to the method described in claim 1, it is characterised in that the serving BS is according to the H₁、 The S₂With the H₂It is determined that reconstruct interference signal I₂, including：

According to I₂=(S₂*H₂)/H₁Obtain weight interference signal I₂。

3. according to the method described in claim 1, it is characterised in that methods described also includes：

The serving BS is received to be taken in the interference feedback message that the UE is sent, the interference feedback message With interference type, the interference type includes co-channel interference and environmental disturbances；

Whether the serving BS judges the UE by there is co-channel interference according to the interference feedback message.

4. according to the method described in claim 1, it is characterised in that methods described includes：

The serving BS obtains the working frequency of the UE；

The working frequency is carried in the interference request by the serving BS, carries the work frequently The interference request of rate is used to control the second terminal UE2 that the interference base station is interfered, and described in request S₂And the H₂。

5. a kind of interference elimination method, it is characterised in that methods described includes：

The UE sends the interference feedback message to serving BS；

The UE receives the second sending signal S, the second sending signal S=that the serving BS is sent (S₀-I₂)*H₁, wherein the S₀For the serving BS originally be sent to the UE without channel matrix For H₁The signal of the decline of channel, the H₁For the letter of the serving BS to the channel between the UE Road matrix, the I₂For reconstruct the interference base station to the interference signal of the UE.

6. method according to claim 5, it is characterised in that methods described also includes：

When the interference type is co-channel interference, flow terminates.

7. a kind of base station, it is characterised in that the base station include the first transmitting element, the first receiving unit, First acquisition unit, determining unit, second acquisition unit and the second transmitting element, wherein：

First transmitting element, co-channel interferences of the first terminal UE by second terminal UE2 is judged for working as When, interference request is sent to interference base station, the interference request is used to ask the interference base station and the UE2 The downstream signal S of communication₂And the interference base station is to the channel matrix H of the channel between the UE₂, institute The base station of cell of the interference base station belonging to the UE2 is stated, the serving BS is small belonging to the UE The base station in area；

The second acquisition unit, for obtaining the first sending signal S₀, the S₀It is former for the serving BS Originally be sent to the UE is H without channel matrix₁The signal of the decline of channel；

Second transmitting element, for by the S₀With the I₂Difference sent as the second sending signal S To the UE.

8. base station according to claim 7, it is characterised in that the determining unit, for according to I₂ =(S₂*H₂)/H1 obtains weight interference signal I₂。

9. base station according to claim 7, it is characterised in that the base station also includes second and receives single Member and judging unit, wherein：

10. the base station according to any one of claim 7 to 9, it is characterised in that the base station includes 3rd acquiring unit and carrying unit, wherein

3rd acquiring unit, the working frequency for obtaining the UE；

11. a kind of terminal, it is characterised in that the terminal includes measuring unit, second carries unit, the Three transmitting elements and the 3rd receiving unit, wherein：

3rd receiving unit, it is described for the second sending signal S for receiving that the serving BS sends Second sending signal S=(S₀-I₂)*H₁, wherein the S₀The UE is sent to for the serving BS originally Without channel matrix be H₁The signal of the decline of channel, the H₁For the serving BS to the UE Between channel channel matrix, the I₂For reconstruct the interference base station to the interference signal of the UE.

12. terminal according to claim 11, it is characterised in that the terminal also includes end unit, For when the interference type is co-channel interference, flow to terminate.