CN105340231B - Interference blanking unit and method - Google Patents
Interference blanking unit and method Download PDFInfo
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- CN105340231B CN105340231B CN201480036761.0A CN201480036761A CN105340231B CN 105340231 B CN105340231 B CN 105340231B CN 201480036761 A CN201480036761 A CN 201480036761A CN 105340231 B CN105340231 B CN 105340231B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
Abstract
The present invention provides a kind of interference blanking unit and methods, the method comprise the steps that obtaining the interference information (201) of specific base；When receiving transmission signal, under the premise of not demodulated to the transmission signal, which is backed up, obtains the first signal (202)；According to the interference information, demodulation reconstruct is carried out to the interference sections in first signal, obtains interference signal (203)；The interference signal is eliminated from first signal, obtains second signal (204).Serving BS in the present invention improves flexibility without synchronous in time with the specific base.
Description
Technical field
The present invention relates to field of communication technology, in particular to a kind of interference blanking unit and method.
Background technique
With the development of communication technology, demand of the user to frequency spectrum resource is higher and higher, the finiteness problem of frequency spectrum resource
Also it becomes increasingly conspicuous.It, can be with share spectrum resources, in same system between two standards in order to improve frequency spectrum resource utilization rate
Two can share spectrum resources between base station or two systems.But during sharing frequency spectrum resource, two standards
It may mutually interfere, influence power system capacity and system performance.
By taking first base station is interfered caused by the second base station as an example, in order to eliminate interference, the first base station is to second base
It stands and sends the interference information of the first base station, which receives the interference information, when second base station receives signal,
The signal received is demodulated, obtains specified signal, and during demodulation, according to the interference information, reconstruct interference
Signal, then specified from this and subtract the interference signal in signal, the original signal for having eliminated interference can be obtained.
During demodulation, original signal and interference signal can be demodulated, this just needs original signal and interference signal
It synchronizes in time, that is to say and need first base station and the second base station synchronous in time.And work as first base station and the second base station
When asynchronous in time, it will be unable to carry out interference elimination.It is, therefore, desirable to provide a kind of interference elimination method, so that when first
Also interference is able to carry out when base station and the second base station asynchronous in time to eliminate.
Summary of the invention
It is eliminated to be able to carry out interference when asynchronous in time with interference base station, the embodiment of the invention provides one
Kind interference blanking unit and method.The technical solution is as follows:
In a first aspect, providing a kind of interference blanking unit, described device includes:
Interference information obtains module, and for obtaining the interference information of specific base, the interference information is described for eliminating
The interference of specific base；
Backup module, for when receive transmission signal when, it is right under the premise of not demodulated to the transmission signal
The transmission signal is backed up, and the first signal is obtained；
Reconstructed module is demodulated, for being demodulated to the interference sections in first signal according to the interference information
And reconstruct, obtain interference signal；
Interference cancellation module obtains second signal for eliminating the interference signal from first signal.
With reference to first aspect, in the first possible implementation of first aspect, the interference information obtains module position
In serving BS；Or,
The interference information obtains module and is located at terminal, and the interference information obtains module for receiving the serving BS
The interference information of transmission, the interference information are sent to the serving BS by the specific base；Or,
When the information that the specific base described in the terminals support reception is sent, the interference information obtains module and is located at institute
State terminal.
The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect, institute
It states interference information and obtains module when being located at the serving BS,
The interference information is by the specific base by calling connecing between the specific base and the serving BS
Mouthful, it is sent to the serving BS；Or,
The interference information passes through the first control between the specific base and the serving BS by the specific base
Node processed is sent to the serving BS；Or,
The interference information is sent to the serving BS by the second control node, and second control node is for dispatching
The resource of the specific base.
The possible implementation of with reference to first aspect the first, in the third possible implementation of first aspect, such as
Fruit carries out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and the serving BS branch
Different communication protocol is held, and when the specific base belongs to Universal Mobile Communication System UMTS,
The interference information includes the main scrambling code information of interfered cell, and the interfered cell is specific base covering
Cell；Alternatively,
The interference information includes the main scrambling code information of the interfered cell, Physical Broadcast Channel PBCH scheduling information and same
Walk channel information；Alternatively,
The interference information include the main scrambling code information of the interfered cell, PBCH scheduling information, synchronous channel information and
UMTS Data scheduling information.
The possible implementation of with reference to first aspect the first, in the 4th kind of possible implementation of first aspect, such as
Fruit carries out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and the serving BS branch
Different communication protocol is held, and when the specific base belongs to Long Term Evolution LTE system,
The interference information include the public reference signal CRS of interfered cell distributed intelligence and antenna port with confidence
Any one of breath, the interfered cell are the cell of specific base covering；Alternatively,
The interference information includes appointing in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
One, PBCH scheduling information and synchronous channel information；Alternatively,
The interference information includes appointing in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
One, PBCH scheduling information, synchronous channel information and LTE Data scheduling information.
The possible implementation of with reference to first aspect the first, in the 5th kind of possible implementation of first aspect, such as
Fruit carries out interference elimination to the upstream signals received by the serving BS, when the specific base and the service base
It stands and supports different communication protocol, and when the specific base belongs to UMTS system,
The interference information includes the special used for physical control channel DPCCH configuration information and coded format letter of interfered with terminal
Breath, the interfered with terminal are that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information includes DPCCH configuration information, encoding format information and the UMTS data tune of the interfered with terminal
Spend information.
The possible implementation of with reference to first aspect the first, in the 6th kind of possible implementation of first aspect, such as
Fruit carries out interference elimination to the upstream signals received by the serving BS, when the specific base and the service base
It stands and supports different communication protocol, and when the specific base belongs to LTE system,
The interference information includes Pilot Interference configuration information, scramble information and the time-frequency domain distributed intelligence of interfered with terminal,
The interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information includes Pilot Interference configuration information, scramble information, the time-frequency domain distribution letter of the interfered with terminal
Breath and LTE Data scheduling information.
With reference to first aspect, in the 7th kind of possible implementation of first aspect, described device further include:
Interference signal preserving module, for saving the interference signal；
Interference cancellation module is saved, for that ought receive transmission signal again but the specific base variation has not been obtained
When rear interference information, according to the interference signal of preservation, interference elimination is carried out to the transmission signal that this is received.
Second aspect provides a kind of interference elimination method, which comprises
The interference information of specific base is obtained, the interference information is used to eliminate the interference of the specific base；
When receiving transmission signal, under the premise of not demodulated to the transmission signal, to the transmission signal
It is backed up, obtains the first signal；
According to the interference information, demodulation reconstruct is carried out to the interference sections in first signal, obtains interference letter
Number；
The interference signal is eliminated from first signal, obtains second signal.
In conjunction with second aspect, in the first possible implementation of second aspect, the interference for obtaining specific base
Information includes:
Serving BS receives the interference information of the specific base；Or,
The serving BS receives the interference information of the specific base, is transmitted to terminal, and the terminal receives described dry
Disturb information；Or,
When the information that the specific base described in the terminals support reception is sent, the terminal receives the specific base hair
The interference information sent.
In conjunction with the first possible implementation of second aspect, in second of possible implementation of second aspect, institute
When stating serving BS and receiving the interference information of the specific base,
The interference information is by the specific base by calling connecing between the specific base and the serving BS
Mouthful, it is sent to the serving BS；Or,
The interference information passes through the first control between the specific base and the serving BS by the specific base
Node processed is sent to the serving BS；Or,
The interference information is sent to the serving BS by the second control node, and second control node is for dispatching
The resource of the specific base.
In conjunction with the first possible implementation of second aspect, in the third possible implementation of second aspect, such as
Fruit carries out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and the serving BS branch
Different communication protocol is held, and when the specific base belongs to Universal Mobile Communication System UMTS,
The interference information includes the main scrambling code information of interfered cell, and the interfered cell is specific base covering
Cell；Alternatively,
The interference information includes the main scrambling code information of the interfered cell, Physical Broadcast Channel PBCH scheduling information and same
Walk channel information；Alternatively,
The interference information include the main scrambling code information of the interfered cell, PBCH scheduling information, synchronous channel information and
UMTS Data scheduling information.
In conjunction with the first possible implementation of second aspect, in the 4th kind of possible implementation of second aspect, such as
Fruit carries out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and the serving BS branch
Different communication protocol is held, and when the specific base belongs to Long Term Evolution LTE system,
The interference information include the public reference signal CRS of interfered cell distributed intelligence and antenna port with confidence
Any one of breath, the interfered cell are the cell of specific base covering；Alternatively,
The interference information includes appointing in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
One, PBCH scheduling information and synchronous channel information；Alternatively,
The interference information includes appointing in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
One, PBCH scheduling information, synchronous channel information and LTE Data scheduling information.
In conjunction with the first possible implementation of second aspect, in the 5th kind of possible implementation of second aspect, such as
Fruit carries out interference elimination to the upstream signals received by the serving BS, when the specific base and the service base
It stands and supports different communication protocol, and when the specific base belongs to UMTS system,
The interference information includes the special used for physical control channel DPCCH configuration information and coded format letter of interfered with terminal
Breath, the interfered with terminal are that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information includes DPCCH configuration information, encoding format information and the UMTS data tune of the interfered with terminal
Spend information.
In conjunction with the first possible implementation of second aspect, in the 6th kind of possible implementation of second aspect, such as
Fruit carries out interference elimination to the upstream signals received by the serving BS, when the specific base and the service base
It stands and supports different communication protocol, and when the specific base belongs to LTE system,
The interference information includes Pilot Interference configuration information, scramble information and the time-frequency domain distributed intelligence of interfered with terminal,
The interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information includes Pilot Interference configuration information, scramble information, the time-frequency domain distribution letter of the interfered with terminal
Breath and LTE Data scheduling information.
It is described according to the interference information in the 7th kind of possible implementation of second aspect in conjunction with second aspect, it is right
Interference sections in first signal carry out demodulation reconstruct, after obtaining interference signal, the method also includes:
Save the interference signal；
When receiving transmission signal again but the interference information after the specific base variation having not been obtained, according to guarantor
The interference signal deposited carries out interference elimination to the transmission signal that this is received.
The beneficial effect of technical solution provided in an embodiment of the present invention is:
By eliminate interfered caused by specific base when, obtain the interference information of specific base, receiving transmission letter
Number when, under the premise of not demodulated to the transmission signal, first the transmission signal is backed up, according to the interference information,
Demodulation reconstruct is carried out to the interference sections in backup signal, obtains interference signal, then eliminate the interference signal.Due to this
Transmission signal is backed up, without reconstructing interference signal while demodulating to transmission signal, then without specified with this
Base station synchronizes in time, improves flexibility.
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 described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of structural schematic diagram of interference cancelling system provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of interference elimination method provided in an embodiment of the present invention；
Fig. 3 is a kind of flow chart of interference elimination method provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of interference elimination method provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of interference blanking unit provided in an embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of interference cancellation apparatus provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Before introducing the embodiment of the present invention, first it is situated between to interference cancelling system applied by the embodiment of the present invention
It continues.
Fig. 1 is the structural schematic diagram of interference cancelling system provided in an embodiment of the present invention, and referring to Fig. 1, which eliminates system
System includes specific base, serving BS and terminal.Wherein, which is located in the coverage area of the serving BS, the service base
It stands for providing service for the terminal, and carries out uplink communication and downlink communication with the terminal.The serving BS and the specified base
It stands share spectrum resources, then when the serving BS sends downstream transmission signals to the terminal, which can be to the downlink
Transmission signal interferes, then the terminal is used to obtain the interference information of the specific base, according to the interference information to the downlink
Transmission signal carries out interference elimination.And the terminal to the serving BS send upstream signals when, with the specific base into
The terminal of row uplink communication can also interfere the upstream signals, then the serving BS is for obtaining the specific base
Interference information carries out interference elimination to the upstream signals according to the interference information.
Fig. 2 is a kind of flow chart of interference elimination method provided in an embodiment of the present invention, referring to fig. 2, this method comprises:
201, the interference information of specific base is obtained, which is used to eliminate the interference of the specific base.
202, when receiving transmission signal, under the premise of not demodulated to the transmission signal, to the transmission signal
It is backed up, obtains the first signal.
203, according to the interference information, demodulation reconstruct is carried out to the interference sections in first signal, obtains interference letter
Number.
204, the interference signal is eliminated from first signal, obtains second signal.
Method provided in an embodiment of the present invention, by eliminate interfered caused by specific base when, obtain specific base
Interference information, receive transmission signal when, under the premise of not demodulated to the transmission signal, first to the transmission signal into
Row backup carries out demodulation reconstruct to the interference sections in backup signal, obtains interference signal, then disappear according to the interference information
Except the interference signal.Due to being backed up to the transmission signal, without reconstruct while being demodulated to transmission signal
Interference signal improves flexibility then without synchronous in time with the specific base.
Optionally, the interference information of the acquisition specific base includes:
Serving BS receives the interference information of the specific base；Or,
The serving BS receives the interference information of the specific base, is transmitted to terminal, which receives the interference information；
Or,
When the information that the terminals support reception specific base is sent, the terminal receive specific base transmission this is dry
Disturb information.
Optionally, when which receives the interference information of the specific base,
The interference information, by calling the interface between the specific base and the serving BS, is sent to by the specific base
The serving BS；Or,
The interference information passes through the first control node between the specific base and the serving BS, hair by the specific base
Give the serving BS；Or,
The interference information is sent to the serving BS by the second control node, and second control node is specified for dispatching this
The resource of base station.
Optionally, if carrying out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and
The serving BS supports different communication protocol, and the specific base belongs to UMTS (Universal Mobile
Telecommunications System, Universal Mobile Communication System) when,
The interference information includes the main scrambling code information of interfered cell, which is the cell of specific base covering；
Alternatively,
The interference information include the main scrambling code information of the interfered cell, PBCH (Physical Broadcast Channel,
Physical Broadcast Channel) scheduling information and synchronous channel information；Alternatively,
The interference information includes main scrambling code information, PBCH scheduling information, synchronous channel information and the UMTS of the interfered cell
Data scheduling information.
Optionally, if carrying out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and
The serving BS supports different communication protocol, and the specific base belongs to LTE (Long Term Evolution, long term evolution
Technology) system when,
The interference information includes CRS (Cell-specific reference signals, the common reference of interfered cell
Signal) distributed intelligence and any one of the configuration information of antenna port, the interfered cell be the small of specific base covering
Area；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information and synchronous channel information；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information, synchronous channel information and LTE Data scheduling information.
Optionally, if carrying out interference elimination to the upstream signals received by the serving BS, when this specifies base
It stands and the serving BS supports different communication protocol, and when the specific base belongs to UMTS system,
The interference information include interfered with terminal DPCCH (Dedicated Physical Control Channel, it is dedicated
Physical control channel) configuration information and encoding format information, which is that the end of uplink communication is carried out with the specific base
End；Alternatively,
The interference information includes DPCCH configuration information, encoding format information and the UMTS data dispatch letter of the interfered with terminal
Breath.
Optionally, if carrying out interference elimination to the upstream signals received by the serving BS, when this specifies base
It stands and the serving BS supports different communication protocol, and when the specific base belongs to LTE system,
The interference information includes Pilot Interference configuration information, scramble information and the time-frequency domain distributed intelligence of interfered with terminal, should
Interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information include the Pilot Interference configuration information of the interfered with terminal, scramble information, time-frequency domain distributed intelligence and
LTE Data scheduling information.
Optionally, this carries out demodulation reconstruct to the interference sections in first signal, is done according to the interference information
After disturbing signal, this method further include:
Save the interference signal；
When receiving transmission signal again but the interference information after specific base variation having not been obtained, according to preservation
The interference signal, interference elimination is carried out to the transmission signal that this is received.
All the above alternatives can form alternative embodiment of the invention using any combination, herein no longer
It repeats one by one.
Fig. 3 is a kind of flow chart of interference elimination method provided in an embodiment of the present invention, and the embodiment of the present invention is applied to clothes
During the downlink communication of business base station and terminal, interaction agent is specific base, serving BS and terminal, referring to Fig. 3, this method
Include:
301, the specific base sends the interference information of the specific base to the serving BS.
In embodiments of the present invention, which is located in the coverage area of the serving BS, which is the terminal
Service is provided.During the serving BS and the downlink communication of the terminal, in order to improve frequency spectrum resource utilization rate, the service base
Standing can be with the specific base share spectrum resources.It, should but when the serving BS sends downstream transmission signals to the terminal
Downstream transmission signals may be subjected to the interference of the specific base, and therefore, which needs when receiving the downstream transmission signals
Eliminate the interference of the specific base.And in order to eliminate interference, which sends the specific base to the serving BS
Interference information, so that the subsequent terminal carries out interference elimination according to the interference information.Wherein, which refers to for eliminating this
The interference for determining base station may include pilot configuration information, information transmission format, code rate, coding mode of the specific base etc., sheet
Inventive embodiments do not limit this.
Optionally, which may comprise steps of any one of 301a-301b:
301a, the specific base are by calling the interface between the specific base and the serving BS, by the interference information
It is sent to the serving BS.The interface can be eNB (Evolved Node B, evolution node B) and UMTS system in LTE system
The interface between radio network controller in system or NB (Node B, node in the eNB and UMTS system in LTE system
B interface between) etc., it is not limited in the embodiment of the present invention.
The interference information is sent to the first control between the specific base and the serving BS by 301b, the specific base
Node, first control node are transmitted to the serving BS when receiving the interference information.First control node can be
SRC (Single Resource Controller, pooling of resources controller) or other nodes, the embodiment of the present invention to this not
It limits.
In addition, the step 301 can also be replaced by following steps 301c in another embodiment of the embodiment of the present invention:
The interference information of the specific base is sent to the serving BS by 301c, the second control node.Wherein, second control
Node processed is used to dispatch the resource of the specific base, then the available interference to the specific base of second control node is believed
Breath, is sent to the serving BS.Certainly, which can be also used for dispatching the resource of the serving BS, the present invention
Embodiment does not limit this.
The interference information is sent to the serving BS by the specific base in above-mentioned steps 301a, 301b and 301c, it is real
Interference information is showed in the transmitting of terrestrial interface.It and is only to give the interference information in above-mentioned steps 301a, 301b and 301c
Sending method example, but do not constitute the restriction to the sending method.
In embodiments of the present invention, interference elimination is carried out by the downstream transmission signals that the end-on receives, it is to be canceled dry
When the type difference disturbed, the particular content of the interference information is also different.
Optionally, when the specific base and the serving BS support different communication protocol, and the specific base belongs to
When UMTS system, which may include following three information:
The main scrambling code information of the interfered cell (1-1), the interfered cell are the cell of specific base covering；
(1-2) PBCH scheduling information and synchronous channel information；
(1-3) UMTS Data scheduling information, such as data dispatch format or coding mode.
Wherein, the main scrambling code information of the interfered cell is used to eliminate the Pilot Interference of the UMTS system, PBCH scheduling letter
Breath and the synchronous channel information are used to eliminate the common signal channel interference of the UMTS system, and the UMTS Data scheduling information is for eliminating
The data channel of the UMTS system interferes.So, when only eliminating the Pilot Interference of the UMTS system, which includes should
The main scrambling code information of interfered cell；Further, when the common signal channel that also eliminate the UMTS system interferes, the interference information
Main scrambling code information, PBCH scheduling information and synchronous channel information including the interfered cell；Further, when also eliminating this
When the data channel interference of UMTS system, which includes the main scrambling code information of the interfered cell, PBCH scheduling information, same
Walk channel information and UMTS Data scheduling information.
Still optionally further, when the specific base and the serving BS support different communication protocol, and the specific base
When belonging to LTE system, which may include following three information:
Any one of the distributed intelligence of the CRS of the interfered cell (2-1) and the configuration information of antenna port, the interfered cell
For the cell of specific base covering；
(2-2) PBCH scheduling information and synchronous channel information；
(2-3) LTE Data scheduling information, such as data dispatch format or coding mode.
Wherein, any one of configuration information of the distributed intelligence of the CRS of the interfered cell and antenna port is for eliminating
The common signal channel that the Pilot Interference of the LTE system, PBCH scheduling information and synchronous channel information are used to eliminate the LTE system is dry
It disturbs, which is used to eliminate the data channel interference of the LTE system.So, when only eliminating the LTE system
When Pilot Interference, which includes any in the distributed intelligence of the CRS of interfered cell and the configuration information of antenna port
?；Further, when the common signal channel that also eliminate the LTE system interferes, which includes the CRS of interfered cell
Any one of configuration information of distributed intelligence and antenna port, PBCH scheduling information and synchronous channel information；Further,
When the data channel that also eliminate the LTE system interferes, which includes distributed intelligence and the day of the CRS of interfered cell
Any one of configuration information of line end mouth, PBCH scheduling information, synchronous channel information and LTE Data scheduling information.
It should be noted that the interference information due to data channel can change frequent occurrence, data channel interference is being eliminated
When, to wanting for the processing capacity of the time delay of the information interacted between the specific base and the serving BS, frequency and the terminal
Ask all very high, then the serving BS and the specific base can not shared data channel, two data channel timesharing are staggered, with
The interference of data channel is avoided, system complexity is reduced, correspondingly, believing in the interference information without including data dispatch
Breath.Explanation is needed further exist for, given when the serving BS and the specific base are supported not in above-mentioned optional way
With communication protocol when, the example of interference information corresponding to different types of interference, but do not constitute to the interference information
It limits.
302, when the serving BS receives the interference information, the interference information is forwarded to the terminal.
During downlink communication, in order to eliminate interference, which sends the interference information to the terminal, realizes
Interference information carries out interference to the downstream transmission signals received according to the interference information by the terminal and disappears in the transmitting eated dishes without rice or wine
It removes.
Specifically, which can be assisted based on RRC (Radio Resource Control, wireless heterogeneous networks)
View, sends the interference information to the terminal, alternatively, the serving BS is sent out while sending Downlink Control Information to the terminal
The interference information is given, alternatively, the serving BS sends the interference information etc. while sending down dispatch information to the terminal
Deng the embodiment of the present invention sends the concrete mode of the interference information without limitation to the terminal to the serving BS.
It should be noted that sending the interference to the serving BS with the specific base in above-mentioned steps 301 and step 302
Information, the serving BS are illustrated when receiving the interference information, then for sending the interference information to the terminal, and
In actual application, which may configure two receivers, alternatively, the serving BS and the specific base may match
It sets on the same physical entity or logic entity, at this point, the information that the terminals support reception specific base is sent, then should
The interference information directly can be sent to the terminal by specific base, without being subjected to serving BS transmission.
303, when the terminal receives the interference information, the interference information is saved.The terminal saves the interference information, with
Just interference elimination is carried out according to the interference information.
304, when the terminal receives downstream transmission signals, in the premise not demodulated to the downstream transmission signals
Under, which is backed up, the first signal is obtained, according to the interference information, to the interference in first signal
Part carries out demodulation reconstruct, obtains interference signal.
In embodiments of the present invention, which can't immediately pass the downlink when receiving the downstream transmission signals
Defeated signal is demodulated, but is first backed up to the downstream transmission signals, and the first signal is obtained, right according to the interference information
Interference sections in first signal carry out demodulation reconstruct, obtain interference signal.
It should be noted that the embodiment of the present invention is said so that step 301-302 is executed before the step 304 as an example
It is bright, and in actual application, which can also first receive the downstream transmission signals, carry out to the downstream transmission signals
Backup, obtains the first signal, then receive the interference information, is carried out according to the interference information to the interference sections in first signal
Demodulation reconstruct, obtains interference signal, it is not limited in the embodiment of the present invention.
305, the terminal eliminates the interference signal from first signal, obtains second signal, carries out to the second signal
Demodulation, obtains third signal.
In embodiments of the present invention, after which obtains the interference signal, then interference letter is subtracted from first signal
Breath, obtains second signal, which has as eliminated the signal of interference.Later, which can also be to the second signal
Demodulation is re-started, third signal is obtained.
It should be noted that the interference signal can be saved when the terminal obtains the interference signal, in the follow-up process,
If the interference information remains unchanged, indicate to interfere also immobilizing caused by the specific base, then the terminal can be later
When receiving downstream transmission signals, interference elimination is directly carried out to the downstream transmission signals according to the interference signal of the preservation, and
The interference signal is reconstructed without demodulation again.
Correspondingly, the terminal, which saves the last time, carries out the interference signal obtained when interference is eliminated, and receiving this every time
When interference information, judge whether the interference information and the last interference information received are identical, if identical, indicate the interference
Information does not change, then when the terminal receives downstream transmission signals again, directly according to the interference signal of preservation under this
Row transmission signal carries out interference elimination；If it is different, indicating that the interference information has changed, then the terminal receives down again
When row transmission signal, which is backed up, the first signal is obtained, it is right according to the interference information after the variation
Interference sections in first signal carry out demodulation reconstruct, obtain interference signal, and save this obtained interference signal.
Further, which can just send out to the terminal when detecting that the interference information changes every time
Interference information after giving the variation, and when the interference information does not change, just interference information is not sent to the terminal, that
, which saves the interference signal when obtaining the interference signal every time, if the terminal does not receive the specific base also
Be received by downstream transmission signals when another interference information sent, then without judging whether the interference information changes,
Interference elimination is directly carried out to the downstream transmission signals according to the interference signal of the preservation.
Method provided in an embodiment of the present invention, by eliminating the specific base in the terminal caused by when interfering, obtaining should
The interference information of specific base, when receiving downstream transmission signals, under the premise of not demodulated to the transmission signal, first
The downstream transmission signals are backed up, according to the interference information, demodulation reconstruct is carried out to the interference sections in backup signal,
Interference signal is obtained, then eliminates the interference signal.Due to being backed up to the transmission signal, without to transmission signal into
Interference signal is reconstructed while row demodulation, then without synchronous in time with the specific base, improves flexibility.Further
Ground, when the serving BS supports different communication protocols from the specific base, the serving BS and the specific base also can
Interactive interference information, the interference realized between different systems are eliminated.
Fig. 4 is a kind of flow chart of interference elimination method provided in an embodiment of the present invention, and the embodiment of the present invention is applied to clothes
During the uplink communication for base station and the terminal of being engaged in, interaction agent is specific base and serving BS, referring to fig. 4, this method comprises:
401, the specific base sends interference information to the serving BS.
In embodiments of the present invention, during the serving BS and the uplink communication of terminal, which can also be with
With the specific base share spectrum resources, still, when terminal to the serving BS send upstream signals when, the uplink
Signal, which may be subjected to, is provided the interference of the terminal of service by the specific base, and therefore, which is receiving the uplink
When transmitting signal, need to eliminate interference, and in order to eliminate interference, which sends interference information to the serving BS.Its
In, it may include reference signal format, code rate and coding mode etc. which, which is used to eliminate the interference of the specific base,
It is not limited in the embodiment of the present invention.In addition, the specific base to the serving BS send interference information concrete mode with
Above-mentioned steps 301a, 301b and 301c are similar, and details are not described herein.
In embodiments of the present invention, interference elimination is carried out to the upstream signals received by the serving BS, wait disappear
Except interference type difference when, the particular content of the interference information is also different.
Optionally, when the specific base and the serving BS support different communication protocol, and the specific base belongs to
When UMTS system, which may include following two information:
The DPCCH configuration information and encoding format information of (3-1) interfered with terminal, the interfered with terminal be with the specific base into
The terminal of row uplink communication；
(3-2) UMTS Data scheduling information, such as data dispatch format or coding mode.
Wherein, which is located in the coverage area of the specific base, which sends out to the specific base
When sending upstream signals, the upstream signals in the UMTS system can be interfered.The DPCCH of the interfered with terminal is configured
Information and encoding format information are used to eliminate the DPCCH interference of the UMTS system, and the UMTS Data scheduling information is for eliminating this
The data channel of UMTS system interferes.So, when the DPCCH for only eliminating the UMTS system is interfered, which includes should
The DPCCH configuration information and encoding format information of interfered with terminal；Further, when the data channel that also eliminate the UMTS system
When interference, which includes DPCCH configuration information, encoding format information and the UMTS data dispatch letter of the interfered with terminal
Breath.
Still optionally further, when the specific base and the serving BS support different communication protocol, and the specific base
When belonging to LTE system, which may include following two information:
The Pilot Interference configuration information, scramble information and time-frequency domain distributed intelligence of (4-1) interfered with terminal, the interfered with terminal are
The terminal of uplink communication is carried out with the specific base；
(4-2) LTE Data scheduling information, such as data dispatch format or coding mode.
Wherein, the Pilot Interference configuration information of the interfered with terminal, scramble information and time-frequency domain distributed intelligence are for eliminating this
The Pilot Interference of LTE system, the LTE Data scheduling information are used to eliminate the data channel interference of the LTE system.So, when only
When eliminating the Pilot Interference of the LTE system, the interference information include the Pilot Interference configuration information of interfered with terminal, scramble information and
Time-frequency domain distributed intelligence；Further, when the data channel that also eliminate the LTE system interferes, which includes dry
Disturb Pilot Interference configuration information, scramble information, time-frequency domain distributed intelligence and the LTE Data scheduling information of terminal.
It should be noted that being only to give to do corresponding to different types of interference to be canceled in above-mentioned optional way
The example of information is disturbed, but does not constitute the restriction to the interference information.
402, when the serving BS receives the interference information, the interference information is saved.
403, when the serving BS receives upstream signals, before not demodulated to the upstream signals
It puts, which is backed up, obtain the first signal, according to the interference information, to dry in first signal
It disturbs part and carries out demodulation reconstruct, obtain interference signal.
404, the serving BS eliminates the interference signal from first signal, obtains second signal, to the second signal
It is demodulated, obtains third signal.
Above-mentioned steps 402-404 is similar with step 303-305, and details are not described herein.
Method provided in an embodiment of the present invention, by eliminating the specific base in the serving BS caused by when interfering, obtain
The interference information for taking the specific base, when receiving upstream signals, in the premise not demodulated to the transmission signal
Under, first the upstream signals are backed up, according to the interference information, demodulation is carried out to the interference sections in backup signal
Reconstruct, obtains interference signal, then eliminate the interference signal.Due to being backed up to the transmission signal, without to transmission
Interference signal is reconstructed while signal is demodulated, then without synchronous in time with the specific base, and the interference information can
It is sent to the terminal in many ways, improves flexibility.Further, when the serving BS is different from specific base support
Communication protocol when, the serving BS and the specific base also can interactive interference information, realize the interference between different systems
It eliminates.
Fig. 5 is a kind of structural schematic diagram of interference blanking unit provided in an embodiment of the present invention, referring to Fig. 5, the device packet
It includes:
Interference information obtains module 501, and for obtaining the interference information of specific base, which refers to for eliminating this
Determine the interference of base station；
Backup module 502, for when receive transmission signal when, under the premise of not demodulated to the transmission signal,
The transmission signal is backed up, the first signal is obtained；
Demodulation reconstructed module 503 obtains module 501 with interference information and backup module 502 is connect, for according to the interference
Information carries out demodulation reconstruct to the interference sections in first signal, obtains interference signal；
Interference cancellation module 504 and interference information obtain module 501 and demodulation reconstructed module 503 is connect, be used for from this
The interference signal is eliminated in one signal, obtains second signal.
Device provided in an embodiment of the present invention, by eliminate interfered caused by specific base when, obtain specific base
Interference information, receive transmission signal when, under the premise of not demodulated to the transmission signal, first to the transmission signal into
Row backup carries out demodulation reconstruct to the interference sections in backup signal, obtains interference signal, then disappear according to the interference information
Except the interference signal.Due to being backed up to the transmission signal, without reconstruct while being demodulated to transmission signal
Interference signal improves flexibility then without synchronous in time with the specific base.
Optionally, interference information acquisition module 501 is located at serving BS；Or,
The interference information obtains module 501 and is located at terminal, which obtains module 501 for receiving the serving BS
The interference information of transmission, the interference information are sent to the serving BS by the specific base；Or,
When the information that the terminals support reception specific base is sent, which obtains module 501 and is located at the end
End.
Optionally, when interference information acquisition module 501 is located at the serving BS,
The interference information, by calling the interface between the specific base and the serving BS, is sent to by the specific base
The serving BS；Or,
The interference information passes through the first control node between the specific base and the serving BS, hair by the specific base
Give the serving BS；Or,
The interference information is sent to the serving BS by the second control node, and second control node is specified for dispatching this
The resource of base station.
Optionally, if carrying out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and
The serving BS supports different communication protocol, and when the specific base belongs to Universal Mobile Communication System UMTS,
The interference information includes the main scrambling code information of interfered cell, which is the cell of specific base covering；
Alternatively,
The interference information includes the main scrambling code information of the interfered cell, Physical Broadcast Channel PBCH scheduling information and synchronous letter
Road information；Alternatively,
The interference information includes main scrambling code information, PBCH scheduling information, synchronous channel information and the UMTS of the interfered cell
Data scheduling information.
Optionally, if carrying out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and
The serving BS supports different communication protocol, and when the specific base belongs to Long Term Evolution LTE system,
The interference information includes the distributed intelligence of the public reference signal CRS of interfered cell and the configuration information of antenna port
Any one of, which is the cell of specific base covering；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information and synchronous channel information；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information, synchronous channel information and LTE Data scheduling information.
Optionally, if carrying out interference elimination to the upstream signals received by the serving BS, when this specifies base
It stands and the serving BS supports different communication protocol, and when the specific base belongs to UMTS system,
The interference information includes the special used for physical control channel DPCCH configuration information and encoding format information of interfered with terminal,
The interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information includes DPCCH configuration information, encoding format information and the UMTS data dispatch letter of the interfered with terminal
Breath.
Optionally, if carrying out interference elimination to the upstream signals received by the serving BS, when this specifies base
It stands and the serving BS supports different communication protocol, and when the specific base belongs to LTE system,
The interference information includes Pilot Interference configuration information, scramble information and the time-frequency domain distributed intelligence of interfered with terminal, should
Interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information include the Pilot Interference configuration information of the interfered with terminal, scramble information, time-frequency domain distributed intelligence and
LTE Data scheduling information.
Optionally, the device further include:
Interference signal preserving module, for saving the interference signal；
Interference cancellation module is saved, for after receiving transmission signal again but specific base variation has not been obtained
Interference information when, according to the interference signal of preservation, interference elimination is carried out to the transmission signal that this is received.
All the above alternatives can form alternative embodiment of the invention using any combination, herein no longer
It repeats one by one.
Fig. 6 is a kind of structural schematic diagram of interference cancellation apparatus provided in an embodiment of the present invention, referring to Fig. 6, the equipment packet
It includes:
Receiver 601, transmitter 602, memory 603 and processor 604, the receiver 601, the transmitter 602 and should
Memory 603 is connect with the processor 604 respectively, which is stored with program code, and the processor 604 is for calling
The program code executes following operation:
The interference information of specific base is obtained by the receiver 601, the interference information is for eliminating the specific base
Interference；
It is right under the premise of not demodulated to the transmission signal when receiving transmission signal by the receiver 601
The transmission signal is backed up, and the first signal is obtained；
According to the interference information, demodulation reconstruct is carried out to the interference sections in first signal, obtains interference signal；
The interference signal is eliminated from first signal, obtains second signal.
Optionally, which is also used to call the program code, executes following operation:
The interference information of the specific base is received by the receiver 601；Or,
The interference information that the specific base is received by the receiver 601, is transmitted to terminal, which receives interference letter
Breath；Or,
When supporting to receive the information of specific base transmission, passes through the receiver 601 and receive what the specific base was sent
The interference information.
Optionally, when receiving the interference information of the specific base,
The interference information, by calling the interface between the specific base and the serving BS, is sent to by the specific base
The serving BS；Or,
The interference information passes through the first control node between the specific base and the serving BS, hair by the specific base
Give the serving BS；Or,
The interference information is sent to the serving BS by the second control node, and second control node is specified for dispatching this
The resource of base station.
Optionally, if carrying out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and
The serving BS supports different communication protocol, and when the specific base belongs to Universal Mobile Communication System UMTS,
The interference information includes the main scrambling code information of interfered cell, which is the cell of specific base covering；
Alternatively,
The interference information includes the main scrambling code information of the interfered cell, Physical Broadcast Channel PBCH scheduling information and synchronous letter
Road information；Alternatively,
The interference information includes main scrambling code information, PBCH scheduling information, synchronous channel information and the UMTS of the interfered cell
Data scheduling information.
Optionally, if carrying out interference elimination by the downstream transmission signals that the end-on receives, when the specific base and
The serving BS supports different communication protocol, and when the specific base belongs to Long Term Evolution LTE system,
The interference information includes the distributed intelligence of the public reference signal CRS of interfered cell and the configuration information of antenna port
Any one of, which is the cell of specific base covering；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information and synchronous channel information；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information, synchronous channel information and LTE Data scheduling information.
Optionally, if carrying out interference elimination to the upstream signals received by the serving BS, when this specifies base
It stands and the serving BS supports different communication protocol, and when the specific base belongs to UMTS system,
The interference information includes the special used for physical control channel DPCCH configuration information and encoding format information of interfered with terminal,
The interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information includes DPCCH configuration information, encoding format information and the UMTS data dispatch letter of the interfered with terminal
Breath.
Optionally, if carrying out interference elimination to the upstream signals received by the serving BS, when this specifies base
It stands and the serving BS supports different communication protocol, and when the specific base belongs to LTE system,
The interference information includes Pilot Interference configuration information, scramble information and the time-frequency domain distributed intelligence of interfered with terminal, should
Interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information include the Pilot Interference configuration information of the interfered with terminal, scramble information, time-frequency domain distributed intelligence and
LTE Data scheduling information.
Optionally, which is also used to call the program code, executes following operation:
Save the interference signal；
Interference after receiving transmission signal again by the receiver 601 but specific base variation has not been obtained
When information, according to the interference signal of preservation, interference elimination is carried out to the transmission signal that this is received.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of interference blanking unit, which is characterized in that described device includes:
Interference information obtains module, and for obtaining the interference information of specific base, the interference information is described specified for eliminating
The interference of base station；
Backup module, for when receive transmission signal when, under the premise of not demodulated to the transmission signal, to described
Transmission signal is backed up, and the first signal is obtained；
Reconstructed module is demodulated, for carrying out demodulation weight to the interference sections in first signal according to the interference information
Structure obtains interference signal；
Interference cancellation module obtains second signal for eliminating the interference signal from first signal；
If interference elimination is carried out by the downstream transmission signals that end-on receives, when the specific base and the serving BS
Support different communication protocol, and when the specific base belongs to Universal Mobile Communication System UMTS,
The interference information includes the main scrambling code information of interfered cell, and the interfered cell is the small of specific base covering
Area；Alternatively,
The interference information includes the main scrambling code information of the interfered cell, Physical Broadcast Channel PBCH scheduling information and synchronous letter
Road information；Alternatively,
The interference information includes main scrambling code information, PBCH scheduling information, synchronous channel information and the UMTS of the interfered cell
Data scheduling information.
2. the apparatus according to claim 1, which is characterized in that the interference information obtains module and is located at serving BS；Or,
The interference information obtains module and is located at terminal, and the interference information obtains module and sends for receiving the serving BS
Interference information, the interference information is sent to the serving BS by the specific base；Or,
When the information that the specific base described in the terminals support reception is sent, the interference information obtains module and is located at the end
End.
3. the apparatus of claim 2, which is characterized in that the interference information obtains module and is located at the serving BS
When,
The interference information is by the specific base by calling the interface between the specific base and the serving BS, hair
Give the serving BS；Or,
The interference information is saved by the specific base by the first control between the specific base and the serving BS
Point is sent to the serving BS；Or,
The interference information is sent to the serving BS by the second control node, and second control node is described for dispatching
The resource of specific base.
4. the apparatus of claim 2, which is characterized in that if the downstream transmission signals received by the end-on
Interference elimination is carried out, when the specific base and the serving BS support different communication protocol, and the specific base category
When Long Term Evolution LTE system,
The interference information includes in the distributed intelligence of public reference signal CRS and the configuration information of antenna port of interfered cell
Any one, the interfered cell be the specific base covering cell；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information and synchronous channel information；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information, synchronous channel information and LTE Data scheduling information.
5. the apparatus of claim 2, which is characterized in that if the uplink by the serving BS to receiving
Signal carries out interference elimination, when the specific base and the serving BS support different communication protocol, and the specified base
When station belongs to UMTS system,
The interference information includes the special used for physical control channel DPCCH configuration information and encoding format information of interfered with terminal, institute
Stating interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information includes DPCCH configuration information, encoding format information and the UMTS data dispatch letter of the interfered with terminal
Breath.
6. the apparatus of claim 2, which is characterized in that if the uplink by the serving BS to receiving
Signal carries out interference elimination, when the specific base and the serving BS support different communication protocol, and the specified base
When station belongs to LTE system,
The interference information includes Pilot Interference configuration information, scramble information and the time-frequency domain distributed intelligence of interfered with terminal, described
Interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information include the Pilot Interference configuration information of the interfered with terminal, scramble information, time-frequency domain distributed intelligence and
LTE Data scheduling information.
7. the apparatus according to claim 1, which is characterized in that described device further include:
Interference signal preserving module, for saving the interference signal；
Save interference cancellation module, for when receive again transmission signal but have not been obtained the specific base variation after
When interference information, according to the interference signal of preservation, interference elimination is carried out to the transmission signal that this is received.
8. a kind of interference elimination method, which is characterized in that the described method includes:
The interference information of specific base is obtained, the interference information is used to eliminate the interference of the specific base；
When receiving transmission signal, under the premise of not demodulated to the transmission signal, the transmission signal is carried out
Backup, obtains the first signal；
According to the interference information, demodulation reconstruct is carried out to the interference sections in first signal, obtains interference signal；
The interference signal is eliminated from first signal, obtains second signal；
If interference elimination is carried out by the downstream transmission signals that end-on receives, when the specific base and the serving BS
Support different communication protocol, and when the specific base belongs to Universal Mobile Communication System UMTS,
The interference information includes the main scrambling code information of interfered cell, and the interfered cell is the small of specific base covering
Area；Alternatively,
The interference information includes the main scrambling code information of the interfered cell, Physical Broadcast Channel PBCH scheduling information and synchronous letter
Road information；Alternatively,
The interference information includes main scrambling code information, PBCH scheduling information, synchronous channel information and the UMTS of the interfered cell
Data scheduling information.
9. according to the method described in claim 8, it is characterized in that, the interference information for obtaining specific base includes:
Serving BS receives the interference information of the specific base；Or,
The serving BS receives the interference information of the specific base, is transmitted to terminal, and the terminal receives the interference letter
Breath；Or,
When the information that the specific base described in the terminals support reception is sent, the terminal receives what the specific base was sent
The interference information.
10. according to the method described in claim 9, it is characterized in that, the serving BS receives the interference of the specific base
When information,
The interference information is by the specific base by calling the interface between the specific base and the serving BS, hair
Give the serving BS；Or,
The interference information is saved by the specific base by the first control between the specific base and the serving BS
Point is sent to the serving BS；Or,
The interference information is sent to the serving BS by the second control node, and second control node is described for dispatching
The resource of specific base.
11. according to the method described in claim 9, it is characterized in that, if being believed by the downlink transfer that the end-on receives
Number interference elimination is carried out, when the specific base and the serving BS support different communication protocol, and the specific base
When belonging to Long Term Evolution LTE system,
The interference information includes in the distributed intelligence of public reference signal CRS and the configuration information of antenna port of interfered cell
Any one, the interfered cell be the specific base covering cell；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information and synchronous channel information；Alternatively,
The interference information includes any in the distributed intelligence of the CRS of the interfered cell and the configuration information of antenna port
Item, PBCH scheduling information, synchronous channel information and LTE Data scheduling information.
12. according to the method described in claim 9, it is characterized in that, if being passed by the serving BS to the uplink received
Defeated signal carries out interference elimination, when the specific base and the serving BS support different communication protocol, and it is described specified
When base station belongs to UMTS system,
The interference information includes the special used for physical control channel DPCCH configuration information and encoding format information of interfered with terminal, institute
Stating interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information includes DPCCH configuration information, encoding format information and the UMTS data dispatch letter of the interfered with terminal
Breath.
13. according to the method described in claim 9, it is characterized in that, if being passed by the serving BS to the uplink received
Defeated signal carries out interference elimination, when the specific base and the serving BS support different communication protocol, and it is described specified
When base station belongs to LTE system,
The interference information includes Pilot Interference configuration information, scramble information and the time-frequency domain distributed intelligence of interfered with terminal, described
Interfered with terminal is that the terminal of uplink communication is carried out with the specific base；Alternatively,
The interference information include the Pilot Interference configuration information of the interfered with terminal, scramble information, time-frequency domain distributed intelligence and
LTE Data scheduling information.
14. according to the method described in claim 8, it is characterized in that, described according to the interference information, to first signal
In interference sections carry out demodulation reconstruct, after obtaining interference signal, the method also includes:
Save the interference signal；
When receiving transmission signal again but the interference information after the specific base variation having not been obtained, according to preservation
The interference signal carries out interference elimination to the transmission signal that this is received.
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| PCT/CN2014/078487 WO2015180028A1 (en) | 2014-05-27 | 2014-05-27 | Interference cancellation apparatus and method |
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| CN103220088A (en) * | 2012-01-20 | 2013-07-24 | 中兴通讯股份有限公司 | Method, terminal and base station for uplink interference cancellation |
| CN103428120A (en) * | 2012-05-25 | 2013-12-04 | 华为技术有限公司 | Method and apparatus for interference cancellation in long term evolution system, and method and apparatus for data sending in long term evolution system |
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| CN103812804B (en) * | 2012-11-13 | 2016-08-10 | 上海摩波彼克半导体有限公司 | Blind interference removing method and system in wireless communication system |
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| CN103428120A (en) * | 2012-05-25 | 2013-12-04 | 华为技术有限公司 | Method and apparatus for interference cancellation in long term evolution system, and method and apparatus for data sending in long term evolution system |
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