CN104507092B - A kind of disturbance restraining method and system based on heterogeneous network - Google Patents
A kind of disturbance restraining method and system based on heterogeneous network Download PDFInfo
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- CN104507092B CN104507092B CN201410736493.5A CN201410736493A CN104507092B CN 104507092 B CN104507092 B CN 104507092B CN 201410736493 A CN201410736493 A CN 201410736493A CN 104507092 B CN104507092 B CN 104507092B
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- 230000005540 biological transmission Effects 0.000 claims description 46
- 238000005259 measurement Methods 0.000 claims description 25
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Abstract
The invention discloses a kind of disturbance restraining method and system based on heterogeneous network, it is related to communication technical field, for solving in the prior art, due to realizing AF panel using the method for frequency division multiplexing, the problem of causing the availability of frequency spectrum low.In technical scheme provided by the invention, second base station obtains the RB resource locations that first base station is UE distribution, then the second connection that the second base station is established between UE according to RB resource locations, realize that UE is established after connection with first base station, it can also establish and connect with the second base station, and the orthogonal code generated using first base station is encoded to data-signal to be transmitted, user is communicated with first base station and the second base station.The embodiment of the present invention is mainly used in the disturbance restraining method flow based on heterogeneous network.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of disturbance restraining method and system based on heterogeneous network.
Background technology
Micro-base station can be used for absorbing traffic in macro base station hot spot region, share the business of macro base station, or in macro base station
Coverage hole help macro base station mend business that is blind, being responsible for specially in macro base station coverage hole in the region.
At present, in LTE (Long Term Evolution, the Long Term Evolution) stages, due to rare, the operation of frequency spectrum resource
Business will not have the separate spectrum deployment micro-base station of abundance, in order to using micro-base station, select to dispose with frequency, and heterogeneous network
Network, i.e. macro base station and the simultaneous situation of micro-base station, their same frequency deployment, necessarily bring the interference to original macro base station.
Because if macro base station and micro-base station are disposed with frequency, area is collectively covered what network edge can have macro base station and a micro-base station,
Area is collectively covered at these, it may appear that co-channel interference.So-called co-channel interference refers to, the carrier wave of garbage signal and the load of useful signal
Ripple identical situation, to receiving the receiver with frequency useful signal, that is, UE (User Equipment, user equipment) is caused
The phenomenon of interference.Therefore, prior art passes through frequency selection scheduling or eICIC (Enhanced Inter Cell
Interference Coordinat ion, perform enhancing Inter-Cell Interference Coordination) technology, they are all for macro base station and micro- base
The different subcarrier of distribution of standing carries out data transmission, to reduce the interference between micro-base station and macro base station.
When solving the above problems, inventor has found following technical problem in the prior art at least be present:Existing macro base station
With the solution method of micro-base station common footprint co-channel interference, it substantially uses the thought of frequency division multiplexing, and uses frequency
During point multiplexing technology, can by setting up isolation strip between each subcarrier, to ensure not interfereing with each other between each subcarrier, so,
Taken for being just isolated band for the part in whole frequency spectrums of data transfer, can not with the part taken however, being isolated
Carry out data transmission, the availability of frequency spectrum can be caused to reduce.It is therefore desirable to a kind of new disturbance restraining method, improves spectrum utilization
Rate.
The content of the invention
Embodiments of the invention provide a kind of disturbance restraining method and system based on heterogeneous network, solve macro base station with
While the signal interference problem for collectively covering area's appearance of micro-base station, the availability of frequency spectrum is improved.
To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：
A kind of disturbance restraining method based on heterogeneous network, including：
Second base station obtains the resource block RB resource-niches that the first base station is user equipment (UE) distribution from first base station
Put, the first base station be it is current have built up the first base station being connected with the UE, second base station for currently with it is described
UE does not set up the base station of connection, and the RB resource locations are used for the running time-frequency resource for representing that the first base station is UE distribution
Block；
The second connection that second base station is established between the UE according to the RB resource locations, first connection
It is identical with the frequency spectrum resource that the described second connection takes, the first base station or second base station connected by described first or
Second connection carries out data transmission with the UE；
When the first base station and the UE carry out data transmission, the first base station generates orthogonal code, it is described just
Code word is handed over to be encoded for the first base station to data-signal to be transmitted, the data to be transmitted signal is first base
The data-signal stood to UE transmissions；
The orthogonal code is notified second base station and the UE by the first base station, to cause second base station
The data to be transmitted signal is encoded by the orthogonal code；And/or
The UE by the orthogonal code to the data to be transmitted signal after coding to being decoded.
A kind of Interference Suppression System based on heterogeneous network, including：
Second base station, for obtaining the resource block that the first base station is user equipment (UE) distribution from first base station
RB resource locations, the first base station are that the first base station being connected currently is had built up with user equipment (UE), second base station
The base station being connected is not set up with the UE to be current, the RB resource locations are used to represent that the first base station is distributed for the UE
Time/frequency source block；
Second base station, be additionally operable to be established between the UE according to the RB resource locations of acquisition second connect
Connect, first connection is identical with the frequency spectrum resource that the described second connection takes, and the first base station or second base station lead to
Cross first connection or second connection carries out data transmission with the UE；
The first base station, for when the first base station carries out data transmission with the UE, generating orthogonal code, institute
State orthogonal code to encode data-signal to be transmitted for the first base station, the data to be transmitted signal is by described
The data-signal that first base station is sent to the UE；
The first base station, it is additionally operable to the orthogonal code notifying second base station and the UE, it is described to cause
Second base station is encoded by the orthogonal code to the data to be transmitted signal；And/or
The UE is decoded by the orthogonal code to the data to be transmitted signal after coding.
A kind of disturbance restraining method and system based on heterogeneous network provided in an embodiment of the present invention, the second base station from UE
RB (Resource Block, the resource block) resource-niche for obtaining that first base station is UE distribution has been established in the first base station of connection
Put, and establish second with UE according to the RB resource locations and be connected.First is established due to UE and first base station to be connected and the second base station
The second connection is established, therefore, identical carrier wave can be used to carry out data transmission with UE for first base station and the second base station, effectively reduce
When only establishing first with first base station and be connected, co-channel interference caused by the signal that the second base station is sent to first base station.Also, the
One base station and the second base station are carried out data transmission using identical resource block, are avoided in the prior art by the side of frequency division multiplexing
Method progress AF panel, the situation for causing partial-band not use, meanwhile, enter line number in UE and first base station or the second base station
During according to transmission, the orthogonal code generated using first base station is encoded to data-signal to be transmitted, can effectively improve frequency spectrum profit
With rate.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of disturbance restraining method flow chart based on heterogeneous network provided in an embodiment of the present invention；
Fig. 2 is another disturbance restraining method flow chart based on heterogeneous network provided in an embodiment of the present invention；
Fig. 3 is a kind of Interference Suppression System composition schematic diagram based on heterogeneous network provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The embodiments of the invention provide a kind of disturbance restraining method based on heterogeneous network, the availability of frequency spectrum can be improved, such as
Shown in Fig. 1, this method includes：
101st, the second base station obtains the RB resource locations that first base station is UE distribution from first base station.
Wherein, first base station is that the first base station being connected currently is had built up with UE, and the second base station is not built with UE currently
The base station of vertical connection, RB resource locations are used for the time/frequency source block for representing that first base station is UE distribution.Second base station is connect by X2
Mouthful communicated with first base station, it is the RB resource locations that the UE is distributed to obtain first base station, that is, first base station and UE
Resource on physical resource when carrying out data transmission, including resource and time-domain in frequency domain.Need what is illustrated
It is the communication interface that X2 interface uses when being and carrying out data transmission between any base station, so any first base station and any the
It can all be carried out data transmission between two base stations by X2 interface.
102nd, the second connection that the second base station is established between the UE according to RB resource locations.
Wherein, the first connection is identical with the frequency spectrum resource that the second connection takes, and first base station or the second base station pass through first
Connection or the second connection carry out data transmission with UE.UE establishes first with first base station and is connected, when UE and first base station are led to
During letter, UE is carried out data transmission by the first connection with first base station.Likewise, UE is carried out by the second connection with the second base station
Communication.Because the second connection is the connection that the RB resource locations used according to the first connection are established, therefore, the first connection and second
The frequency spectrum resource that connection uses when carrying out data transmission with UE is identical, can regard identical connection as.
103rd, when first base station and UE carry out data transmission, first base station generation orthogonal code.
Wherein, orthogonal code encodes for first base station to data-signal to be transmitted, and data to be transmitted signal is the
The data-signal that one base station is sent to UE.
104th, orthogonal code is notified the second base station and UE by first base station.
After the orthogonal code of first base station transmission is got with UE in the second base station, the second base station just passes through orthogonal code
Data-signal to be transmitted is encoded, UE can be decoded by orthogonal code to the data to be transmitted signal after coding.
In addition, before orthogonal numeral is notified to the second base station and UE by first base station, first base station and the second base station record UE respectively
ID (Ident ity, identity number) first base station and the second base station to distinguish different UE.It should be noted that
UE and first base station establish first be connected after, core net gets UE IMSI (International by first base station
Mobile Subscriber Identification Number, international mobile subscriber identity), and each UE is only corresponded to
One IMSI, therefore core net, when carrying out downlink data transmission, can be distinguished different UE and carry out data transmission according to IMSI.
Wherein, UE and first base station establish first be connected after, data to be transmitted signal passes through caused by first base station
Orthogonal code is sent to UE after being encoded to data-signal to be transmitted.Meanwhile first base station will can be used for progress to be transmitted
The orthogonal code of coding is notified to the second base station and UE.After the orthogonal code that first base station notice is received in the second base station,
Second base station encodes also by the orthogonal code to data-signal to be transmitted, so that the second base station with UE when being communicated
Data-signal to be transmitted is encoded.
What deserves to be explained is UE can send the request for obtaining data to be transmitted signal to first base station and the second base station, the
After one base station or the second base station are connected to request, data to be transmitted signal can be sent to UE.Because first base station and the second base station exist
When receiving UE acquisition data to be transmitted request signal, the data to be transmitted signal that can be sent to UE can be produced simultaneously, but
It is due to that first base station is carried out data transmission with the second base station using identical frequency spectrum, so only needing first base station and the second base station
In a base station send signal to be transmitted to UE.Meanwhile single base station can also avoid two to UE transmission data to be transmitted signals
Interference between base station, therefore in follow-up process, to how to determine a base station in first base station and the second base station to UE
Send data to be transmitted signal to be described in detail, will not be described here.Further, since UE with first base station or the second base station
When carrying out data transmission, because first base station or the second base station have carried out orthogonal coding to data-signal to be transmitted, and carry out just
The orthogonal code for handing over coding to use is randomly generated by first base station, and therefore, different UE are to be passed in reception in transmitting procedure
After defeated signal, only it can just be decoded according to the orthogonal code that the first first base station generation being connected is established with the UE.Institute
So that in transmitting procedure, same RB resources can transmit different UE data to be transmitted signal, utilized so as to improve frequency spectrum resource
Rate.
It should be noted that because first base station is notified of the orthogonal code that UE encoded to data-signal to be transmitted,
So UE in the data to be transmitted signal after receiving coding, can transmit data by the orthogonal code to the band after coding
Signal is decoded, and obtains decoded data to be transmitted signal.
For example, orthogonal code caused by first base station is M0, data to be transmitted signal is S0.Due to M0For orthogonal code,
One base station is by M0And S0Carry out computing, i.e. M0*S0, complete to S0Coding, and be sent to UE.Meanwhile first base station is by M0Notice
Second base station and UE.When the second base station and UE are communicated, the coded system used with first base station is to S0Encoded.And
When UE receives M0*S0Afterwards, M need to be used0To M0*S0Inverse operation when being encoded, you can obtain S0。
A kind of disturbance restraining method based on heterogeneous network provided in an embodiment of the present invention, the second base station has been established from UE
Obtain the RB resource locations that first base station is UE distribution in the first base station of connection, and the is established according to the RB resource locations and UE
Two connections.It is connected because UE establishes first with first base station, establishing second with the second base station is connected, therefore, first base station and
Identical carrier wave can be used to carry out data transmission with UE for two base stations, effectively reduce when establishing first with first base station and being connected, the
Co-channel interference caused by the signal that two base stations are sent to first base station.Also, first base station and the second base station are provided using identical
Source block carries out data transmission, and avoids and carries out AF panel by the method for frequency division multiplexing in the prior art, causes partial-band
Situation about can not use, meanwhile, when UE and first base station or the second base station carry out data transmission, generated using first base station
Orthogonal code encodes to data-signal to be transmitted, can effectively improve the availability of frequency spectrum.
Another embodiment provided by the invention, is performed before step 102, as shown in Fig. 2 including：
201st, first base station obtains the measurement report that UE is reported.
Wherein, measurement report is used to represent that UE is presently in region, and the signal matter established between the base station connected with UE
Amount.UE, which is presently in region, to be included：First base station and the area that collectively covers of the second base station, or only it is in the covering of first base station
Area.When UE enters first base station and when collectively covering area of the second base station, the small of first base station can be included in UE measurement report
Area identifies and the cell ID of the second base station.First base station reads the measurement report that UE is sent, if reading same in measurement report
When the cell ID comprising first base station and the second base station cell ID, then first base station notify UE to the second base station send builds
The request of vertical second connection.Now perform following step 202.
It is connected it should be noted that UE first establishes with which base station, then UE necessarily first establishes the base station of connection in this
The area of coverage in, with reference to explanation of the step 101 before to first base station, the UE is necessarily in the area of coverage of first base station, and this
When the signal sent that UE can receive the second base station be present, then illustrate UE and meanwhile in the second base station the area of coverage, this hair
Do not consider that UE is separately in the area of coverage situation of the second base station in the practical application scene of bright embodiment.
202nd, when UE is presently in region as first base station and when collectively covering area of the second base station, the second base station obtains UE
Connection request is established to what the second base station was sent, and RB resource locations are obtained from first base station.
Wherein, after performing step 202, above-mentioned steps 102 are performed to step 104.
In another embodiment of the present invention, be described in detail UE and first base station and the second base station establish first be connected and
After second connection, the method that selects which of first base station or the second base station base station to carry out data transmission, including：
First base station and the second base station obtain the measurement report that UE is reported simultaneously, the measurement report reported according to UE, it is determined that
UE carries out the transmission of data to be transmitted signal with the high base station of signal quality.
Wherein, it is connected and after the second base station establishes the second connection if UE has established first with first base station, the UE cycles
Property send measurement report to first base station and the second base station simultaneously, the present invention is not limited the cycle duration herein, above-mentioned week
Phase duration is configured according to actual use situation by operator.The measurement report that first base station and the second base station are reported by UE
Accuse, the signal quality between the signal quality between UE and first base station and UE and the second base station can be got.Now, if
One base station is read in the measurement report that UE is reported, and the signal quality between UE and first base station is high, then first base station is entered with UE
Row communication, if due to the change of UE positions, make the signal quality height between UE and the second base station, then the second base station is led to UE
Letter.If UE is as the signal quality of first base station and the second base station, first base station and any one in the second base station and UE
Communicated.It should be noted that if UE is communicated with first base station, first base station will notify second by X2 interface
Base station is now being communicated with UE.Second base station will not be communicated after the notice of first base station transmission is obtained with UE.
It should also be noted that, because the first connection and the second connection are transmitted using identical frequency spectrum, so working as has UE to need to pass
During defeated data to be transmitted signal, any one connection in the first link or the second link and first base station or second can be used
Base station is communicated.
With reference to the method flow described in above-mentioned Fig. 1 to Fig. 2, wherein, the base station type belonging to first base station includes：Macro base station
Or micro-base station, the base station type belonging to the second base station include：Macro base station or micro-base station, and belonging to first base station and the second base station
Base station type is different.
In summary, it is for convenience of the understanding of the present invention, overall flow of the invention：
1) UE with first base station establish first be connected after, periodically to first base station reporting measurement reports.If the first base
Stand to read in the measurement report that UE is sent and have the cell ID of first base station and the cell ID of the second base station, then first base station is true
That determines that UE is located at first base station and the second base station collectively covers area, and notify UE sent to the second base station establish the second connection please
Ask, carry out step 2), if reading the cell ID that the measurement report that UE is sent comprises only first base station, do not notify UE, and
Continue to monitor the measurement report that UE is reported.
2) UE establishes second with the second base station and is connected.
I) UE initiates to establish the request of the second connection to the second base station.
Ii) the second base station receive UE transmission establish connection request after, by X2 interface obtain first base station be UE
The RB resource locations of distribution.
Iii) the second base station is established second with UE using the RB resource locations got and is connected.
3) UE establishes first with first base station and is connected, and the second base station is established after the second connection.First base station will be orthogonal
Code word is notified to the second base station and UE.
4) first base station and the second base station are compiled by the orthogonal code that first base station generates to data-signal to be transmitted
Code.
5) base station high with signal quality in first base station and the second base station UE is communicated.
6) the data to be transmitted signal after the coding that UE receives first base station or the second base station is sent, is led to by first base station
The orthogonal code known decodes to the data to be transmitted signal after coding, obtains data to be transmitted signal.
A kind of disturbance restraining method based on heterogeneous network provided in an embodiment of the present invention, the second base station has been established from UE
Obtain the RB resource locations that first base station is UE distribution in the first base station of connection, and the is established according to the RB resource locations and UE
Two connections.First is established due to UE and first base station to be connected and the second connection is established in the second base station, therefore, first base station and second
Identical carrier wave can be used to carry out data transmission with UE for base station, effectively reduce when establishing first with first base station and being connected, second
Base station is to co-channel interference caused by first base station.Also, first base station and the second base station carry out data using identical resource block
Transmission, avoid and AF panel, the feelings for causing partial-band not use are carried out by the method for frequency division multiplexing in the prior art
Condition, meanwhile, when UE and first base station or the second base station carry out data transmission, the orthogonal code generated using first base station is treated
Transmission data-signal is encoded, and can effectively improve the availability of frequency spectrum.
A kind of Interference Suppression System based on heterogeneous network, as shown in figure 3, the system comprises at least：Second base station 31,
One base station 32, UE33.
Second base station 31, for obtaining RB resource locations from first base station 32.
Wherein, first base station 32 is that the first base station being connected currently is had built up with UE33, the second base station 31 for currently with
UE33 does not set up the base station of connection, and RB resource locations are used for the time/frequency source block for representing that first base station 32 is UE33 distribution.
Second base station 31, it is additionally operable to the second connection established according to the RB resource locations of acquisition between UE33.
Wherein, the first connection is identical with the frequency spectrum resource that the second connection takes, and the base station 31 of first base station 32 or second passes through
First connection or the second connection carry out data transmission with UE33.
First base station 32, during for carrying out data transmission with UE33, generate orthogonal code.
Wherein, orthogonal code encodes for first base station 32 to data-signal to be transmitted, and data to be transmitted signal is,
The data-signal sent from first base station 32 to UE33.
First base station 32, it is additionally operable to orthogonal code notifying the second base station 31 and UE33.
Wherein, the second base station 31 is encoded by the orthogonal code that first base station 32 notifies to data-signal to be transmitted；
And/or UE33 is decoded by the orthogonal code that first base station 32 notifies to the data to be transmitted signal after coding.
In another embodiment of the invention, as shown in figure 3,
First base station 32, it is additionally operable to obtain the measurement report that UE33 is reported.
Wherein, measurement report is used to represent that UE33 is presently in region, and the letter established between the base station connected with UE33
Number quality, UE33, which is presently in region, to be included：The base station 31 of first base station 32 and second collectively covers area.
Second base station 31, it is additionally operable to when UE33 is presently in region collectively covering for first base station 32 and the second base station 31
Qu Shi, obtain UE33 and establish connection request to what the second base station 31 was sent, and RB resource locations are obtained from first base station 32.
In another embodiment of the invention, as shown in figure 3,
The base station 31 of first base station 32 and second, it is additionally operable to obtain the measurement report that UE33 is reported, the survey reported according to UE33
Amount report, determine that UE carries out the transmission of data to be transmitted signal with the high base station of signal quality.
As shown in figure 3, wherein, the base station type belonging to first base station 32 includes：Macro base station or micro-base station, the second base station 31
Affiliated base station type includes：Macro base station or micro-base station, and first base station 32 is different from the base station type belonging to the second base station 31.
What deserves to be explained is system as shown in Figure 3 in the present embodiment is used to realize the side described by above-mentioned Fig. 1 to Fig. 2
Method flow.
A kind of Interference Suppression System based on heterogeneous network provided in an embodiment of the present invention, the second base station has been established from UE
Obtain the RB resource locations that first base station is UE distribution in the first base station of connection, and the is established according to the RB resource locations and UE
Two connections.First is established due to UE and first base station to be connected and the second connection is established in the second base station, therefore, first base station and second
Identical carrier wave can be used to carry out data transmission with UE for base station, effectively reduce when establishing first with first base station and being connected, second
Co-channel interference caused by the signal that base station is sent to first base station.Also, first base station and the second base station use identical resource
Block carries out data transmission, and avoids and carries out AF panel by the method for frequency division multiplexing in the prior art, cause partial-band without
The situation that method uses, meanwhile, when UE and first base station or the second base station carry out data transmission, using orthogonal code to be transmitted
Data-signal is encoded, and can effectively improve the availability of frequency spectrum.
Through the above description of the embodiments, it is apparent to those skilled in the art that the present invention can borrow
Software is helped to add the mode of required common hardware to realize, naturally it is also possible to which by hardware, but the former is more preferably in many cases
Embodiment.Based on such understanding, portion that technical scheme substantially contributes to prior art in other words
Dividing can be embodied in the form of software product, and the computer software product is stored in the storage medium that can be read, and such as be counted
The floppy disk of calculation machine, hard disk or CD etc., including some instructions to cause a computer equipment (can be personal computer,
Server, or network equipment etc.) method that performs each embodiment of the present invention.
More than, it is only embodiment of the invention, but protection scope of the present invention is not limited thereto, and it is any to be familiar with
Those skilled in the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be covered
Within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (8)
- A kind of 1. disturbance restraining method based on heterogeneous network, it is characterised in that including：Second base station obtains the resource block RB resource locations that the first base station is user equipment (UE) distribution, institute from first base station State first base station be it is current have built up the first base station being connected with the UE, second base station is does not build currently with the UE The base station of vertical connection, the RB resource locations are used for the time/frequency source block for representing that the first base station is UE distribution；The second connection that second base station is established between the UE according to the RB resource locations, first connection and institute It is identical to state the frequency spectrum resource of the second connection occupancy, the first base station or second base station connect or described by described first Second connection carries out data transmission with the UE；When the first base station and the UE carry out data transmission, the first base station generates orthogonal code, the orthogonal code Word encodes for the first base station to data-signal to be transmitted, the data to be transmitted signal be the first base station to The data-signal that the UE is sent；The orthogonal code is notified second base station and the UE by the first base station, to cause second base station to pass through The orthogonal code encodes to the data to be transmitted signal；The UE is decoded by the orthogonal code to the data to be transmitted signal after coding.
- 2. according to the method for claim 1, it is characterised in that establish second with the UE in second base station and be connected it Before include：The first base station obtains the measurement report that the UE is reported, and the measurement report is used to represent that the UE is presently in area Domain, and the signal quality established with the UE between the base station connected, the UE, which is presently in region, to be included：The first base station Area is collectively covered with second base station；When the UE is presently in region as the first base station and when collectively covering area of second base station, second base The acquisition UE that stands establishes connection request to what second base station was sent, and the RB resources are obtained from the first base station Position.
- 3. according to the method for claim 2, it is characterised in that establish second with the UE in second base station and be connected it After include：The first base station and second base station obtain the measurement report that the UE is reported simultaneously, are reported according to the UE The measurement report, determine that the high base station of the UE and signal quality carries out the transmission of the data to be transmitted signal.
- 4. according to the method described in claim any one of 1-3, it is characterised in that including：Base station type belonging to the first base station includes：Macro base station or micro-base station, the base station type belonging to second base station Including：The macro base station or the micro-base station, and the first base station is different from the base station type belonging to second base station.
- 5. a kind of Interference Suppression System based on heterogeneous network, it is characterised in that the system comprises at least：Second base station, One base station, UE；Second base station, for obtaining the resource block that the first base station is user equipment (UE) distribution from the first base station RB resource locations, the first base station are that the first base station being connected currently is had built up with user equipment (UE), second base station The base station being connected is not set up with the UE to be current, the RB resource locations are used to represent that the first base station is distributed for the UE Time/frequency source block；Second base station, it is additionally operable to the second connection established according to the RB resource locations of acquisition between the UE, institute It is identical with the frequency spectrum resource that the described second connection takes to state the first connection, and the first base station or second base station pass through described First connection or second connection carry out data transmission with the UE；The first base station, for when the first base station and the UE carry out data transmission, generating orthogonal code, it is described just Code word is handed over to be encoded for the first base station to data-signal to be transmitted, the data to be transmitted signal is by described first The data-signal that base station is sent to the UE；The first base station, it is additionally operable to the orthogonal code notifying second base station and the UE, to cause described second Base station is encoded by the orthogonal code to the data to be transmitted signal；The UE is decoded by the orthogonal code to the data to be transmitted signal after coding.
- 6. system according to claim 5, it is characterised in thatThe first base station, it is additionally operable to obtain the measurement report that the UE is reported, the measurement report is used to represent that the UE works as Preceding residing region, and the signal quality established with the UE between the base station connected, the UE, which is presently in region, to be included：It is described First base station collectively covers area with second base station；Second base station, it is additionally operable to when the UE is presently in region as the common of the first base station and second base station During the area of coverage, obtain the UE and establish connection request to what second base station was sent, and institute is obtained from the first base station State RB resource locations.
- 7. system according to claim 6, it is characterised in thatThe first base station and second base station, it is additionally operable to obtain the measurement report that the UE is reported, according to the UE The measurement report reported, determine that the UE carries out the transmission of the data to be transmitted signal with the high base station of signal quality.
- 8. according to any described systems of claim 5-7, it is characterised in thatBase station type belonging to the first base station includes：Macro base station or micro-base station, the base station type belonging to second base station Including：The macro base station or the micro-base station, and the first base station is different from the base station type belonging to second base station.
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| EP2139249B1 (en) * | 2007-03-15 | 2017-09-20 | Fujitsu Limited | Base station and method used in mobile communication system |
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| CN101772130A (en) * | 2009-01-07 | 2010-07-07 | 中兴通讯股份有限公司 | Auxiliary detection signaling sending method |
| CN103190104A (en) * | 2010-11-05 | 2013-07-03 | 阿尔卡特朗讯 | Network nodes and methods |
| CN104054296A (en) * | 2012-01-04 | 2014-09-17 | 高通股份有限公司 | Short message transmission with minimal interference to macro cell |
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