CN104735789B

CN104735789B - A kind of inter-cell interference cancellation method, apparatus and system

Info

Publication number: CN104735789B
Application number: CN201310705995.7A
Authority: CN
Inventors: 王森; 韩双锋
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2013-12-19
Filing date: 2013-12-19
Publication date: 2018-06-26
Anticipated expiration: 2033-12-19
Also published as: CN104735789A

Abstract

The invention discloses a kind of inter-cell interference cancellation method, apparatus and system, this method to include：First base station sends downlink reference signal, so that the second base station carries out channel estimation according to the signal and obtains corresponding channel information；Receive the channel information of the second base station feedback, and according to the channel information be descending scheduling user's allocation schedule resource, and the transmission of data is carried out to descending scheduling user by the scheduling resource, which includes the channel information between the transmission antenna of first base station and the reception antenna of the second base station.In this programme, due in the estimation for carrying out down channel, channel between base station reception antenna and adjacent base station transmission antenna can be measured and feed back to adjacent base station, so that adjacent base station is in the distribution for carrying out descending scheduling resource, the influence of the transmission of this cell downlink and downlink transmission to neighboring community's uplink receiving can be considered, so as to can reach the purpose for largely eliminating inter-cell interference, the performance of lifting system.

Description

A kind of inter-cell interference cancellation method, apparatus and system

Technical field

The present invention relates to wireless communication technology field more particularly to one kind based on co-channel full duplex simultaneously（CCFD, Co- frequency Co-time Full Duplex）The inter-cell interference cancellation method, apparatus and system of wireless communication system.

Background technology

At present, according to the difference of way communication, wireless communication system can be divided mainly into time division duplex（TDD, Time Division Duplex）System and frequency division duplex（FDD, Frequency Division Duplex）Two major class of system.Its In, identical frequency, different time-gap can be used to transmit data in the tdd systems, and phase can be used in the frequency division duplex system Same time slot, different frequency transmit data, to respectively reach the purpose of the interference between isolation uplink downlink.But due to In above two duplex system, during uplink downlink is isolated, time resource and frequency resource are sacrificed respectively, because And can there are the availability of frequency spectrum it is more low the problem of.

Lead in view of the above-mentioned problems, industry proposes a kind of co-channel full duplex while can be used for improving frequency spectrum resource utilization rate Letter system.In described while co-channel full duplex communication system, communicating pair can be each configured with a pair of of transmission antenna and reception Antenna, with reach be carried out at the same time in identical frequency and time quantum downlink data transmission and upstream data reception mesh 's.Specifically, under ideal conditions, described while co-channel full duplex communication system and existing tdd systems and frequency division are double Work system is compared, and has the promotion of twice or so spectrum efficiency.

But as shown in Figure 1（Interference signal schematic diagrames of the Fig. 1 between co-channel full duplex communication system simultaneously）, due to In described while co-channel full duplex communication system, the interference between system（Assuming that it can accomplish between base station end dual-mode antenna very well Isolation）Interference and user uplink transmission pair caused by adjacent base station downlink reception user are sent in addition to including base station down Except interference caused by adjacent base station uplink receiving, base station down transmission antenna is may also include to adjacent base station uplink receiving antenna Caused by interference etc., also, provide only to solve in the base station simultaneously in co-channel full duplex communication system in the prior art The self-interference problem in portion or the scheme for solving the uplink and downlink interference problem in same cell between base station and user, because This, if still being carried out using inter-cell interference cancellation scheme described in the prior art to described while co-channel full duplex communication system The elimination of inter-cell interference can have that interference eradicating efficacy is poor, lead to the reduction of system communication performance.

Invention content

An embodiment of the present invention provides a kind of inter-cell interference cancellation method, apparatus and system, with solve presently, there are Inter-cell interference cancellation effect poor the problem of causing system communication performance relatively low of co-channel full duplex communication system simultaneously.

An embodiment of the present invention provides a kind of inter-cell interference cancellation method, the method is suitable for co-channel full duplex simultaneously In communication system, including：

First base station sends downlink reference signal, so that second base station adjacent with the first base station is according to the downlink Reference signal carries out channel estimation and obtains corresponding channel information；

The channel information of second base station feedback is received, and is descending scheduling user point according to the channel information And, the transmission of data is carried out to the descending scheduling user by the scheduling resource distributed with corresponding scheduling resource, In, the channel that the channel information is included between the transmission antenna of the first base station and the reception antenna of second base station is believed Breath.

Wherein, the downlink reference signal respectively with the uplink reference signals of each serving cell of the first base station and The uplink reference signals of each serving cell of second base station are orthogonal；Alternatively,

Used in the downlink reference signal in resource, each serving cell of the first base station and described second Each serving cell of base station carries out the transmission of upstream data by the way of silent.

Further, when being not provided in the first base station for the transmission antenna to the first base station and described the During the interference cancellation circuit that the interference signal between the reception antenna of one base station is eliminated, the downlink reference signal also with institute State the signal in orthogonal for being used to carry out self-interference channel measurement of first base station transmission.

Further, the method further includes：

If according to the channel information of second base station feedback, determine the first base station and second base station it Between interference channel power be more than given threshold, then be second base station distribution dedicated channel measure resource, and it is described specially With the transmission that the downlink reference signal is carried out in channel measurement resource.

Wherein, it is measured in resource in the dedicated channel, each serving cell of the first base station and second base Transmission of each serving cell stood without uplink signal and downlink signal.

Further, before the scheduling resource by being distributed carries out the transmission of data to the descending scheduling user, The method further includes：

According to the channel information of second base station feedback, prelist to the data of the descending scheduling user Code；

The transmission of data is carried out to the descending scheduling user by the scheduling resource distributed, including：

By the scheduling resource distributed, the descending scheduling user data after precoding is sent.

The embodiment of the present invention additionally provides a kind of inter-cell interference cancellation method, and the method is suitable for complete double with frequency simultaneously In work communication system, including：

Second base station receives the downlink reference signal that the first base station adjacent with second base station is sent, and according to described Downlink reference signal carries out channel estimation to obtain corresponding channel information, wherein, accessed channel information includes described Channel information between the transmission antenna of first base station and the reception antenna of second base station；

By the feedback of channel information got to the first base station, so that the first base station is according to the acquisition To channel information distribute corresponding scheduling resource by descending scheduling user and pass through the scheduling resource distributed to the downlink Dispatch the transmission that user carries out data.

Further, the method further includes：

If according to the channel information got, the interference letter between the first base station and second base station is determined Road power is more than given threshold, it indicates that the first base station distributes dedicated channel for second base station and measures resource and in institute It states dedicated channel and measures the transmission that the downlink reference signal is carried out in resource.

Further, by the feedback of channel information got to the first base station, so that the first base station root Corresponding scheduling resource is distributed by descending scheduling user and pass through the scheduling resource distributed according to the channel information got The transmission of data is carried out to the descending scheduling user, including：

By the feedback of channel information got to the first base station, so that the first base station is according to the acquisition The channel information arrived distributes corresponding scheduling resource for descending scheduling user, and the data of the descending scheduling user is carried out pre- Coding and, by the scheduling resource distributed, the descending scheduling user data after precoding is sent.

Correspondingly, an embodiment of the present invention provides a kind of base station, the base station is suitable for co-channel full duplex communication system simultaneously In system, including：

Reference signal transmitting element, for sending downlink reference signal, so that the adjacent base station of the base station is according to Downlink reference signal carries out channel estimation and obtains corresponding channel information；

Channel information receiving unit, for receiving the channel information of the adjacent base station feedback；

Downlink data transmitting element, under the channel information for being received according to the channel information receiving unit is Row scheduling user distribute corresponding scheduling resource, and passes through distributed scheduling resource and carry out data to the descending scheduling user Transmission, wherein, between the transmission antenna of the channel information including the base station and the reception antenna of the adjacent base station Channel information.

Wherein, the downlink reference signal respectively with uplink reference signals of each serving cell of the base station and described The uplink reference signals of each serving cell of adjacent base station are orthogonal；Alternatively,

Used in the downlink reference signal in resource, each serving cell and the adjacent base station of the base station Each serving cell the transmission of upstream data is carried out by the way of silent.

Further, when being not provided with the reception for the transmission antenna to the base station and the base station in the base station During the interference cancellation circuit that the interference signal between antenna is eliminated, what the downlink reference signal was also sent with the base station For carrying out the signal in orthogonal of self-interference channel measurement.

Further, the base station further includes private resource allocation unit：

If the private resource allocation unit for the channel information fed back according to the adjacent base station, determines institute The interference channel power stated between base station and the adjacent base station is more than given threshold, then distributes special letter for the adjacent base station Road measures resource；

The reference signal transmitting element carries out the descending reference specifically for being measured in the dedicated channel in resource The transmission of signal.

Wherein, it is measured in resource in the dedicated channel, each serving cell of the base station and the adjacent base station Transmission of each serving cell without uplink signal and downlink signal.

Further, the base station further includes data precoding unit：

The data precoding unit, in the scheduling resource by being distributed to the descending scheduling user into line number According to transmission before, according to the channel information that the adjacent base station is fed back, the data of the descending scheduling user are carried out Precoding；

The downlink data transmitting element, specifically for passing through distributed scheduling resource, to the downlink tune after precoding Degree user data is sent.

The embodiment of the present invention additionally provides a kind of base station, the base station suitable for co-channel full duplex communication system simultaneously, Including：

Reference signal receiving unit, for receiving the downlink reference signal of the adjacent base station of base station transmission；

Channel information acquisition unit, for the downlink reference signal received according to the reference signal receiving unit Channel estimation is carried out to obtain corresponding channel information, wherein, accessed channel information includes the hair of the adjacent base station Channel information between antennas and the reception antenna at the station；

Feedback of channel information unit, for giving the feedback of channel information got to the adjacent base station, so that institute Channel information that adjacent base station gets according to is stated to be distributed corresponding scheduling resource by descending scheduling user and passed through point The scheduling resource matched carries out the descending scheduling user transmission of data.

Wherein, the downlink reference signal respectively with the uplink reference signals of each serving cell of the adjacent base station and The uplink reference signals of each serving cell of the base station are orthogonal；Alternatively,

Used in the downlink reference signal in resource, each serving cell of the adjacent base station and the base station Each serving cell the transmission of upstream data is carried out by the way of silent.

Further, when being not provided in the adjacent base station for the transmission antenna to the adjacent base station and the phase During the interference cancellation circuit that the interference signal between the reception antenna of adjacent base station is eliminated, the downlink reference signal also with institute State the signal in orthogonal for being used to carry out self-interference channel measurement of adjacent base station transmission.

Further, the base station further includes private resource indicating unit：

If the private resource indicating unit for according to the channel information got, determines the adjacent base station Interference channel power between the base station is more than given threshold, it indicates that the adjacent base station distributes special for the base station Channel measurement resource simultaneously measures the transmission that the downlink reference signal is carried out in resource in the dedicated channel.

Wherein, it is measured in resource in the dedicated channel, each serving cell of the adjacent base station and the base station Transmission of each serving cell without uplink signal and downlink signal.

Further, the feedback of channel information unit, specifically for by the feedback of channel information got to institute Adjacent base station is stated, so that the channel information that the adjacent base station is got according to is the corresponding tune of descending scheduling user distribution Spend resource, and the data of the descending scheduling user are carried out precoding and, by the scheduling resource distributed, to prelisting Descending scheduling user data after code is sent.

Correspondingly, the embodiment of the present invention additionally provides a kind of inter-cell interference cancellation system, and the system is suitable for simultaneously In co-channel full duplex communication system, including at least one first base station and at least one second base station, wherein：

The first base station for sending downlink reference signal, and receives the channel information of second base station feedback, with And corresponding scheduling resource is distributed, and pass through distributed scheduling resource pair for descending scheduling user according to the channel information The descending scheduling user carries out the transmission of data, wherein, the channel information include the transmission antenna of the first base station with Channel information between the reception antenna of second base station；

Second base station for receiving the downlink reference signal that the first base station is sent, and is joined according to the downlink Examine signal carry out channel estimation with obtain corresponding channel information and, by accessed feedback of channel information to described the One base station.

The present invention has the beneficial effect that：

An embodiment of the present invention provides a kind of inter-cell interference cancellation method, apparatus and system, the method includes：First Base station sends downlink reference signal, so that the second adjacent base station carries out channel estimation according to the downlink reference signal and obtains Corresponding channel information；The channel information of second base station feedback is received, and is downlink tune according to the channel information Spend user's allocation schedule resource and, the transmission of data is carried out to descending scheduling user by the scheduling resource that is distributed, In, the channel that accessed channel information is included between the transmission antenna of first base station and the reception antenna of the second base station is believed Breath.In technical solution described in the embodiment of the present invention, due to carry out down channel estimation when, can to base station reception antenna with Channel between adjacent base station transmission antenna measures and feeds back to adjacent base station, so that adjacent base station is carrying out descending scheduling During the distribution of resource, the influence of the transmission of this cell downlink and downlink transmission to neighboring community's uplink receiving can be considered, so as to The purpose largely eliminated and interfered between co-channel full duplex communication system cell simultaneously is can reach, promotes co-channel full duplex simultaneously The system performance of communication system.

Description of the drawings

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

Fig. 1 is shown while the interference signal schematic diagram between co-channel full duplex communication system；

Fig. 2 show the flow diagram of inter-cell interference cancellation method described in the embodiment of the present invention one；

Fig. 3 show the flow diagram of inter-cell interference cancellation method described in the embodiment of the present invention two；

Fig. 4 show the flow diagram of inter-cell interference cancellation method described in the embodiment of the present invention three；

Fig. 5 show the structure diagram of base station described in the embodiment of the present invention four；

Fig. 6 show the structure diagram of base station described in the embodiment of the present invention five；

Fig. 7 show the structure diagram of inter-cell interference cancellation system described in the embodiment of the present invention six.

Specific embodiment

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

Embodiment one：

As shown in Fig. 2, its flow diagram for inter-cell interference cancellation method described in the embodiment of the present invention one, described Inter-cell interference cancellation method is applicable to while in co-channel full duplex communication system.Specifically, the inter-cell interference cancellation Method may include following steps：

Step 101：First base station send downlink reference signal so that second base station adjacent with the first base station according to The downlink reference signal carries out channel estimation and obtains corresponding channel information, wherein, accessed channel information includes Channel information between the transmission antenna of the first base station and the reception antenna of second base station.

Specifically, at the same time in co-channel full duplex communication system, the transmission antenna of the first base station and second base Channel information between the reception antenna stood at least can be with the transmission antenna of the first base station and the reception of second base station Interference signal between antenna is related, and the embodiment of the present invention is not limited in any way this.

It should be noted that in embodiment of the present invention, second base station is according to the downlink reference signal institute The channel information got in addition to can include the transmission antenna of the first base station and second base station reception antenna it Between channel information outside, can also usually include channel information between base station and user, such as first base station and described the Channel information between user in each cell in two base stations etc., the embodiment of the present invention is not also limited in any way this.

Explanation in need again, channel information of second base station according to accessed by the downlink reference signal lead to Can be often the CQI for weighing channel quality（Channel Quality Indication, channel quality instruction）Parameter etc. Information, the embodiment of the present invention are not also limited in any way this.

Further, in embodiment of the present invention, in order to improve the accuracy of channel information measurement, first base It stands when sending the downlink reference signal, processing accordingly can be carried out to the downlink reference signal so that it meets following item Part：

The downlink reference signal respectively with uplink reference signals of each serving cell of the first base station and described The uplink reference signals of each serving cell of second base station are orthogonal, wherein, carry out orthogonal resource can be time domain, frequency domain or Code channel etc., the embodiment of the present invention is not limited in any way this；Alternatively,

Used in the downlink reference signal in resource, each serving cell of the first base station and described second Each serving cell of base station is using silent（Mute）Mode carry out the transmission of upstream data, wherein, the downlink reference signal Used resource can be by master controller, such as base station controller（BSC）Deng each base station being uniformly handed down in system, the present invention Embodiment does not repeat this.

Further, due to being directed to while for each base station in co-channel full duplex communication system, transmission antenna is to receiving The measurement of self-interference channel between antenna needs the adjustment of transmission power, because excessive transmission power can cause receiving circuit Saturation causes base station can not work normally, and therefore, cannot be used as certainly for the reference signal that interference channel between base station measures The measurement of interference channel.That is, when being not provided in the first base station for the transmission antenna to the first base station The interference cancellation circuit that interference signal between the reception antenna of the first base station is eliminated（That is base station end dual-mode antenna Between can not accomplish to be isolated well）When, the downlink reference signal and the first base station send for carrying out self-interference The signal of channel measurement is also orthogonal, to ensure the accuracy of channel information measurement.

Step 102：The channel information of second base station feedback is received, and is believed according to the channel of second base station feedback Cease for descending scheduling user distribute corresponding scheduling resource and, the descending scheduling is used by the scheduling resource distributed Family carries out the transmission of data.

Wherein, the channel information that second base station is fed back is second base station according to the downlink reference signal Carry out transmission antenna that is accessed, including the first base station and the reception antenna of second base station during channel estimation Between channel information channel information, the embodiment of the present invention do not repeat this.

Further, it is the corresponding scheduling money of descending scheduling user distribution according to the channel information of second base station feedback Source typically according to the channel information of second base station feedback, determines available, opposite to second base station interference Smaller scheduling resource, and from it is described it is available, second base station is interfered selected in relatively small scheduling resource it is corresponding Scheduling resource distribute to the descending scheduling user, with reach reduce to each cell of the second base station reception antenna or the second base station User interference purpose, improve the effect of inter-cell interference cancellation.

Further, in embodiment of the present invention, the descending scheduling is used in the scheduling resource by being distributed Before family carries out the transmission of data, the method can also include：

According to the channel information that second base station is fed back, precoding is carried out to the data of the descending scheduling user. Specifically, in embodiment of the present invention, it can be used and the Beamforming algorithms of " null " are formed to adjacent base station to described The data of descending scheduling user carry out precoding processing and then the scheduling resource by being distributed, to the downlink after precoding Dispatch user data is sent, and to reach while downlink traffic transmission is ensured, reduces this cell to neighboring community's uplink The purpose of the interference of user.

Further, in order to further improve the accuracy of channel information measurement result, in embodiment of the present invention, The method can also include：

According to the channel information that second base station is fed back, determine between the first base station and second base station Whether interference channel power is more than given threshold, if so, distributing dedicated channel for second base station measures resource, and in institute It states dedicated channel and measures the transmission that the downlink reference signal is carried out in resource.

Specifically, in embodiment of the present invention, each base station（First base station or the second base station）It can be according to setting duration Whether the mean power of adjacent base station interference channel inside measured judges the downlink transfer of adjacent base station to the uplink receiving of itself Severe jamming is caused, adjacent base station causes severe jamming to this base station if finding（The adjacent base station measured in duration is such as set to do The mean power for disturbing channel is more than given threshold）, then distribution dedicated channel can be used and measure resource（Including time domain, frequency domain or code The resources such as road）, and the dedicated channel measure resource carry out downlink reference signal transmission or reception by way of carry out compared with Accurate channel estimation improves the accuracy of channel information measurement result with this.

Further, it in embodiment of the present invention, is measured in resource in the dedicated channel, the first base station The transmission of each serving cell and each serving cell of second base station usually without uplink signal and downlink signal, with This improves the accuracy of channel information measurement result.

It is further to note that since channel measurement resource is not changeless, but can believe between base station The variation of road situation is changed, and therefore, in embodiment of the present invention, money is measured by the dedicated channel that each base station is distributed Source is also required to correspondingly be adjusted variation according to the variation of channel conditions between base station, and the embodiment of the present invention does not go to live in the household of one's in-laws on getting married to this It states.

Explanation in need again, in embodiment of the present invention, dedicated channel is measured in resource between base station, is passed through The channel information that downlink reference signal is obtained by X2 interface, wireless Backhaul or can pass through the respective optical fiber in base station Etc. feeding back to master controller and then the distribution of channel information uniformly being carried out by master controller, the embodiment of the present invention is to this Also it does not repeat.

The embodiment of the present invention one provides a kind of be applicable to while the inter-cell interference of co-channel full duplex communication system disappears Except method, due in the transmission that data are carried out to descending scheduling user, can receiving neighbor bs feedback base station transmission antenna With the channel information between adjacent base station reception antenna, and according to the channel information carry out descending scheduling resource distribution, i.e., The influence of the transmission of this cell downlink and downlink transmission to neighboring community's uplink receiving can be considered, so as to can reach largely Eliminate the purpose interfered between co-channel full duplex communication system cell simultaneously, the system for promoting co-channel full duplex communication system simultaneously in ground Performance.

Embodiment two：

The embodiment of the present invention two is for acting execution side and be the second base station, to minizone described in the embodiment of the present invention one Interference elimination method is further described.As shown in figure 3, it is inter-cell interference cancellation side described in the embodiment of the present invention two The flow diagram of method, the inter-cell interference cancellation method may include following steps：

Step 201：Second base station receives the downlink reference signal that the first base station adjacent with second base station is sent, and Channel estimation is carried out to obtain corresponding channel information according to the downlink reference signal, wherein, accessed channel information Transmission antenna including the first base station and the channel information between the reception antenna of second base station.

Specifically, at the same time in co-channel full duplex communication system, the dual-mode antenna of the first base station and second base Channel information between the dual-mode antenna stood at least can be with the transmission antenna of the first base station and the reception of second base station Interference signal between antenna is related, and the embodiment of the present invention is not limited in any way this.

It should be noted that in embodiment of the present invention, second base station according to the downlink reference signal into Accessed channel information is in addition to the transmission antenna that can include the first base station and second base during row channel estimation Outside channel information between the reception antenna stood, it can also usually include channel information between base station and user, such as described the Channel information between user in one base station and each cell in the second base station etc., the embodiment of the present invention do not make this any yet It limits.

Explanation in need again, channel information of second base station according to accessed by the downlink reference signal lead to Can be often that information, the embodiment of the present invention such as the CQI parameter for weighing channel quality are not also limited in any way this.

Further, in embodiment of the present invention, in order to improve the accuracy of channel information measurement, the downlink ginseng The following conditions need to usually be met by examining signal：

Used in the downlink reference signal in resource, each serving cell of the first base station and described second Each serving cell of base station carries out the transmission of upstream data by the way of silent, wherein, the downlink reference signal is used Resource can each base station in system be uniformly handed down to by master controller, such as base station controller, the embodiment of the present invention is to this It does not repeat.

Step 202：By the feedback of channel information got to the first base station so that the first base station according to The channel information got distributes corresponding scheduling resource by descending scheduling user and passes through the scheduling resource pair distributed The descending scheduling user carries out the transmission of data.

Specifically, in embodiment of the present invention, the first base station is in the channel according to second base station feedback Information for descending scheduling user distribute corresponding scheduling resource when, usually can according to the channel information of second base station feedback, Determine it is available, interfere second base station relatively small scheduling resource, and from it is described it is available, to second base station It interferes and corresponding scheduling resource is selected to distribute to the descending scheduling user in relatively small scheduling resource, to reach reduction pair The interference of the user of each cell of second base station reception antenna or the second base station and then the mesh of the effect of raising inter-cell interference cancellation 's.

Further, by the feedback of channel information got to the first base station, so that the first base station root Corresponding scheduling resource is distributed by descending scheduling user and pass through the scheduling resource distributed according to the channel information got The transmission of data is carried out to the descending scheduling user, can be included：

Specifically, in embodiment of the present invention, the Beamforming calculations that " null " is formed to adjacent base station can be used Method carries out precoding processing to the data of the descending scheduling user, to reach while downlink traffic transmission is ensured, reduces This cell is to the purpose of the interference of neighboring community's uplink user.

Further, in embodiment of the present invention, the method can also include：

If accessed channel information, determines the first base station and second base station during according to progress channel estimation Between interference channel power be more than given threshold, it indicates that the first base station for second base station distribute dedicated channel survey Amount resource simultaneously measures the transmission that the downlink reference signal is carried out in resource in the dedicated channel.

Wherein, it is measured in resource in the dedicated channel, each serving cell of the first base station and second base Transmission of each serving cell stood usually without uplink signal and downlink signal, channel information measurement result is improved with this Accuracy.

The embodiment of the present invention two provides a kind of be applicable to while the inter-cell interference of co-channel full duplex communication system disappears It, can be between base station reception antenna and adjacent base station transmission antenna due in the channel estimation for carrying out down channel except method Channel measure and feed back to adjacent base station so that adjacent base station carry out descending scheduling resource distribution when, can integrate Consider the influence of the transmission of this cell downlink and downlink transmission to neighboring community's uplink receiving, largely eliminated so as to can reach The purpose interfered between co-channel full duplex communication system cell simultaneously promotes the system performance of co-channel full duplex communication system simultaneously.

Embodiment three：

The embodiment of the present invention three is for acting execution side as the first base station of interaction and the second base station both sides, to this hair Inter-cell interference cancellation method is further described described in bright embodiment one or embodiment two.As shown in figure 4, it is this hair The flow diagram of inter-cell interference cancellation method described in bright embodiment three, the inter-cell interference cancellation method may include with Lower step：

Step 301：First base station sends downlink reference signal.

Specifically, in embodiment of the present invention, in order to improve the accuracy of channel information measurement, the first base station When sending the downlink reference signal, processing accordingly can be carried out to the downlink reference signal so that it meets following item Part：

Step 302：Second base station receives the downlink reference signal that the first base station is sent, and according to the descending reference Signal carries out channel estimation to obtain corresponding channel information, wherein, accessed channel information includes the first base station Transmission antenna and second base station reception antenna between channel information.

Step 303：The first base station is given the feedback of channel information got in second base station.

Specifically, the channel information got can be fed directly to the first base station by second base station, Can be by the channel information that gets described in being sent to the master controller, and distributed unitedly by the master controller Mode to first base station feedback described in the channel information that gets, present example is not limited in any way this.

Step 304：First base station receives the channel information of second base station feedback, and according to second base station feedback Channel information for descending scheduling user distribute corresponding scheduling resource and, by the scheduling resource that is distributed under described Row scheduling user carries out the transmission of data.

The embodiment of the present invention three provides a kind of be applicable to while the inter-cell interference of co-channel full duplex communication system disappears Except method, due in the transmission that data are carried out to descending scheduling user, can receiving neighbor bs feedback base station transmission antenna With the channel information between adjacent base station reception antenna, and according to the channel information carry out descending scheduling resource distribution, i.e., The influence of the transmission of this cell downlink and downlink transmission to neighboring community's uplink receiving can be considered, so as to can reach largely Eliminate the purpose interfered between co-channel full duplex communication system cell simultaneously, the system for promoting co-channel full duplex communication system simultaneously in ground Performance.

Example IV：

The embodiment of the present invention four, which provides, a kind of is applicable to the small of method shown in the embodiment of the present invention one or embodiment three Section interference blanking unit.Specifically, the inter-cell interference cancellation device generally can be the collection of base station or setting in a base station Forming apparatus etc., the embodiment of the present invention is not limited in any way this.

Specifically, in example IV of the present invention, by the inter-cell interference cancellation device to be carried out for base station It illustrates.As shown in figure 5, its structure diagram for base station described in the embodiment of the present invention four, the base station can include Reference signal transmitting element 11, channel information receiving unit 12 and downlink data transmitting element 13, wherein：

The reference signal transmitting element 11 can be used for sending downlink reference signal, so that the adjacent base station root of the base station Channel estimation is carried out according to the downlink reference signal and obtains corresponding channel information；

The channel information receiving unit 12 can be used for receiving the channel information of the adjacent base station feedback；

The downlink data transmitting element 13 can be used for the letter received according to the channel information receiving unit 12 Road information distributes corresponding scheduling resource for descending scheduling user, and passes through distributed scheduling resource and the descending scheduling is used Family carries out the transmission of data；

Wherein, the channel information is included between the transmission antenna of the base station and the reception antenna of the adjacent base station Channel information.

Specifically, at the same time in co-channel full duplex communication system, the transmission antenna of the base station and the adjacent base station Channel information between reception antenna at least can be between the transmission antenna of the base station and the reception antenna of the adjacent base station Interference signal it is related, the embodiment of the present invention is not limited in any way this.

It should be noted that in embodiment of the present invention, the adjacent base station is according to the downlink reference signal institute The channel information got is in addition to that can include between the transmission antenna of the base station and the reception antenna of the adjacent base station Outside channel information, it can also usually include the channel information between base station and user, such as base station and the adjacent base station are each Channel information between user in cell etc., the embodiment of the present invention is not also limited in any way this.

Further, in embodiment of the present invention, in order to improve the accuracy of channel information measurement, first base The transmitted downlink reference signal of standing need to usually meet the following conditions：

The downlink reference signal respectively with uplink reference signals of each serving cell of the base station and described adjacent The uplink reference signals of each serving cell of base station are orthogonal, wherein, it can be time domain, frequency domain or code channel to carry out orthogonal resource Deng the embodiment of the present invention is not limited in any way this；Alternatively,

Used in the downlink reference signal in resource, each serving cell and the adjacent base station of the base station Each serving cell the transmission of upstream data is carried out by the way of silent, wherein, provided used in the downlink reference signal Source can uniformly be handed down to each base station in system by master controller, such as base station controller, and the embodiment of the present invention does not make this It repeats.

Further, due to being directed to while for each base station in co-channel full duplex communication system, transmission antenna is to receiving The measurement of self-interference channel between antenna needs the adjustment of transmission power, because excessive transmission power can cause receiving circuit Saturation causes base station can not work normally, and therefore, cannot be used as certainly for the reference signal that interference channel between base station measures The measurement of interference channel.That is, when being not provided in the base station for the transmission antenna to the base station and the base The interference cancellation circuit that interference signal between the reception antenna stood is eliminated（It can not accomplish between base station end dual-mode antenna Isolation well）When, the signal for being used to carry out self-interference channel measurement of the downlink reference signal and base station transmission It is orthogonal, to ensure the accuracy of channel information measurement.

Further, the base station can also include private resource allocation unit 14, wherein：

If the private resource allocation unit 14 can be used for the channel information fed back according to the adjacent base station, determine Interference channel power between the base station and the adjacent base station is more than given threshold, then is distributed for the adjacent base station special Channel measurement resource.Correspondingly, the reference signal transmitting element 11, which is particularly used in, measures in the dedicated channel in resource Carry out the transmission of the downlink reference signal.

Wherein, it is measured in resource in the dedicated channel, each serving cell of the base station and the adjacent base station Transmission of each serving cell without uplink signal and downlink signal improves the accuracy of channel information measurement result with this.

Further, in embodiment of the present invention, the base station can also include data precoding unit 15, In：

The data precoding unit 15 can be used for the scheduling resource by being distributed to the descending scheduling user into Before the transmission of row data, according to the channel information that the adjacent base station is fed back, to the data of the descending scheduling user Carry out precoding.Specifically, in embodiment of the present invention, the data precoding unit 15 can be used to adjacent base station shape Beamforming algorithms into " null " carry out precoding processing to the data of the descending scheduling user, are being ensured with reaching While downlink traffic transmission, the purpose of interference of this cell to neighboring community's uplink user is reduced.

Correspondingly, the downlink data transmitting element 13 is particularly used in the scheduling resource by being distributed, to precoding Descending scheduling user data afterwards is sent.

The embodiment of the present invention four provides a kind of be applicable to while the inter-cell interference of co-channel full duplex communication system disappears Except device, due in the transmission that data are carried out to descending scheduling user, can receiving neighbor bs feedback base station transmission antenna With the channel information between adjacent base station reception antenna, and according to the channel information carry out descending scheduling resource distribution, i.e., The influence of the transmission of this cell downlink and downlink transmission to neighboring community's uplink receiving can be considered, so as to can reach largely Eliminate the purpose interfered between co-channel full duplex communication system cell simultaneously, the system for promoting co-channel full duplex communication system simultaneously in ground Performance.

Embodiment five：

The embodiment of the present invention five, which provides, a kind of is applicable to the small of method shown in the embodiment of the present invention two or embodiment three Section interference blanking unit.Specifically, the inter-cell interference cancellation device generally can be the collection of base station or setting in a base station Forming apparatus etc., the embodiment of the present invention is not limited in any way this.

Specifically, in embodiment five of the present invention, by the inter-cell interference cancellation device to be carried out for base station It illustrates.As shown in fig. 6, its structure diagram for base station described in the embodiment of the present invention five, the base station can include Reference signal receiving unit 21, channel information acquisition unit 22 and feedback of channel information unit 23, wherein：

The reference signal receiving unit 21 can be used for the downlink reference signal that the adjacent base station for receiving the base station is sent；

The channel information acquisition unit 22 can be used for according to the reference signal receiving unit 21 receive it is described under Row reference signal carries out channel estimation to obtain corresponding channel information, wherein, accessed channel information includes the phase Channel information between the transmission antenna of adjacent base station and the reception antenna of the base station；

The feedback of channel information unit 23 can be used for the feedback of channel information got to the adjacent base station, So that the channel information that the adjacent base station is got according to distributes corresponding scheduling resource for descending scheduling user and leads to Cross the transmission that distributed scheduling resource carries out the descending scheduling user data；Specifically, the feedback of channel information list Member 23 can be used for the feedback of channel information got to the adjacent base station, so that the adjacent base station is obtained according to The channel information got distributes corresponding scheduling resource, and the data of the descending scheduling user are carried out for descending scheduling user Precoding and, by the scheduling resource distributed, the descending scheduling user data after precoding is sent.

Wherein, the Beamforming calculations that " null " is formed to adjacent base station can be used in the feedback of channel information unit 23 Method carries out precoding processing to the data of the descending scheduling user, to reach while downlink traffic transmission is ensured, reduces This cell does not repeat this purpose of interference of neighboring community's uplink user, the embodiment of the present invention.

Further, in embodiment of the present invention, at the same time in co-channel full duplex communication system, the adjacent base station Transmission antenna and the base station reception antenna between channel information at least can with the transmission antenna of the adjacent base station with Interference signal between the reception antenna of the base station is related, and the embodiment of the present invention is not limited in any way this.

It should be noted that in embodiment of the present invention, the base station is according to acquired in the downlink reference signal To channel information in addition to the channel between the transmission antenna of the adjacent base station and the reception antenna of the base station can be included Outside information, it can also usually include the channel information between base station and user, such as adjacent base station and each cell in the base station In user between channel information etc., the embodiment of the present invention is not limited in any way this.

Used in the downlink reference signal in resource, each serving cell and the adjacent base station of the base station Each serving cell the transmission of upstream data is carried out by the way of silent, wherein, provided used in the downlink reference signal Source can uniformly be handed down to each base station in system by master controller, such as base station controller, and the embodiment of the present invention does not make this It repeats..

Further, due to being directed to while for each base station in co-channel full duplex communication system, transmission antenna is to receiving The measurement of self-interference channel between antenna needs the adjustment of transmission power, because excessive transmission power can cause receiving circuit Saturation causes base station can not work normally, and therefore, cannot be used as certainly for the reference signal that interference channel between base station measures The measurement of interference channel.That is, when being not provided in the adjacent base station for the transmission antenna to the adjacent base station The interference cancellation circuit that interference signal between the reception antenna of the adjacent base station is eliminated（That is base station end dual-mode antenna Between can not accomplish to be isolated well）When, the downlink reference signal and the adjacent base station send for carrying out self-interference The signal of channel measurement is also orthogonal, to ensure the accuracy of channel information measurement.

Further, the base station can also include private resource indicating unit 24, wherein：

If the private resource indicating unit 24 can be used for according to the channel information got, the adjacent base is determined The interference channel power stood between the base station is more than given threshold, it indicates that the adjacent base station is special for base station distribution The transmission of the downlink reference signal is carried out with channel measurement resource and in dedicated channel measurement resource.

Wherein, it is measured in resource in the dedicated channel, each serving cell of the adjacent base station and the base station Transmission of each serving cell without uplink signal and downlink signal improves the accuracy of channel information measurement result with this.

The embodiment of the present invention five provides a kind of be applicable to while the inter-cell interference of co-channel full duplex communication system disappears It, can be between base station reception antenna and adjacent base station transmission antenna due in the channel estimation for carrying out down channel except device Channel measure and feed back to adjacent base station so that adjacent base station carry out descending scheduling resource distribution when, can integrate Consider the influence of the transmission of this cell downlink and downlink transmission to neighboring community's uplink receiving, largely eliminated so as to can reach The purpose interfered between co-channel full duplex communication system cell simultaneously promotes the system performance of co-channel full duplex communication system simultaneously.

Embodiment six：

The embodiment of the present invention six provides a kind of be applicable to while the inter-cell interference of co-channel full duplex communication system disappears Except system.Specifically, as shown in fig. 7, its structural representation for inter-cell interference cancellation system described in the embodiment of the present invention six Figure, the system can include at least one first base station 31 and at least one second base station 32, wherein：

The first base station 31 can be used for sending downlink reference signal, and receive the channel letter fed back second base station 32 Breath and, distribute corresponding scheduling resource for descending scheduling user according to the channel information, and pass through distributed scheduling money Source carries out the descending scheduling user transmission of data, wherein, the channel information includes the transmission of the first base station 31 Channel information between antenna and the reception antenna of second base station 32；

Second base station 32 can be used for receiving the downlink reference signal that the first base station 31 is sent, and according under described Row reference signal carry out channel estimation with obtain corresponding channel information and, by accessed feedback of channel information to institute State first base station 31.

Specifically, at the same time in co-channel full duplex communication system, the transmission antenna of the first base station 31 and described second Channel information between the reception antenna of base station 32 at least can be with the first base station 31 transmission antenna and second base station Interference signal between 32 reception antenna is related, and the embodiment of the present invention is not limited in any way this.

It should be noted that in embodiment of the present invention, second base station 32 is according to the downlink reference signal Accessed channel information is in addition to that can include the transmission antenna of the first base station 31 and the reception of second base station 32 Outside channel information between antenna, it can also usually include the channel information between base station and user, such as first base station 31 Channel information between the user in 32 each cell of the second base station etc., the embodiment of the present invention does not make this any limit yet It is fixed.

The function of explanation in need again, the first base station 31 and second base station 32 is interchangeable, i.e., at this It invents in the embodiment, for any base station in system, the base station can be provided simultaneously with the first base station 31 and institute State the function that the second base station 32 has.It is further to note that the first base station 31 and second base station 32 Concrete structure is similar with the base station described in the embodiment of the present invention four and the embodiment of the present invention five respectively, the embodiment of the present invention pair This is repeated no more.

The embodiment of the present invention six provides a kind of be applicable to while the inter-cell interference of co-channel full duplex communication system disappears It, can be between base station reception antenna and adjacent base station transmission antenna due in the channel estimation for carrying out down channel except system Channel measure and feed back to adjacent base station so that adjacent base station carry out descending scheduling resource distribution when, can integrate Consider the influence of the transmission of this cell downlink and downlink transmission to neighboring community's uplink receiving, largely eliminated so as to can reach The purpose interfered between co-channel full duplex communication system cell simultaneously promotes the system performance of co-channel full duplex communication system simultaneously.

It will be understood by those skilled in the art that the embodiment of the present invention can be provided as method, apparatus（Equipment）Or computer journey Sequence product.Therefore, in terms of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and hardware The form of embodiment.Moreover, the calculating for wherein including computer usable program code in one or more can be used in the present invention Machine usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program of upper implementation The form of product.

The present invention be with reference to according to the method for the embodiment of the present invention, device（Equipment）With the flow chart of computer program product And/or block diagram describes.It should be understood that each flow in flowchart and/or the block diagram can be realized by computer program instructions And/or the flow in box and flowchart and/or the block diagram and/or the combination of box.These computer programs can be provided to refer to The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is enabled to generate One machine so that the instruction generation performed by computer or the processor of other programmable data processing devices is used to implement The device of function specified in one flow of flow chart or multiple flows and/or one box of block diagram or multiple boxes.

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

These computer program instructions can be also loaded into computer or other programmable data processing devices so that counted Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or The instruction offer performed on other programmable devices is used to implement in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in a box or multiple boxes.

Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation Property concept, then additional changes and modifications may be made to these embodiments.So appended claims be intended to be construed to include it is excellent It selects embodiment and falls into all change and modification of the scope of the invention.

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

Claims

1. a kind of inter-cell interference cancellation method, suitable for co-channel full duplex communication system simultaneously, which is characterized in that including：

First base station sends downlink reference signal, so that second base station adjacent with the first base station is according to the descending reference Signal carries out channel estimation and obtains corresponding channel information；

The channel information of second base station feedback is received, and phase is distributed for descending scheduling user according to the channel information The scheduling resource answered and, the transmission of data is carried out to the descending scheduling user by the scheduling resource distributed, wherein, The channel information includes the channel information between the transmission antenna of the first base station and the reception antenna of second base station.

2. inter-cell interference cancellation method as described in claim 1, which is characterized in that

The downlink reference signal respectively with the uplink reference signals of each serving cell of the first base station and described second The uplink reference signals of each serving cell of base station are orthogonal；Alternatively,

Used in the downlink reference signal in resource, each serving cell of the first base station and second base station Each serving cell the transmission of upstream data is carried out by the way of silent.

3. inter-cell interference cancellation method as claimed in claim 2, which is characterized in that

When being not provided with the reception for the transmission antenna to the first base station and the first base station in the first base station During the interference cancellation circuit that the interference signal between antenna is eliminated, the downlink reference signal is also sent out with the first base station That send is used to carry out the signal in orthogonal of self-interference channel measurement.

4. the inter-cell interference cancellation method as described in claims 1 to 3 is any, which is characterized in that the method further includes：

If according to the channel information of second base station feedback, determine between the first base station and second base station Interference channel power is more than given threshold, then distributing dedicated channel for second base station measures resource, and in the special letter Road measures the transmission that the downlink reference signal is carried out in resource.

5. inter-cell interference cancellation method as claimed in claim 4, which is characterized in that

It is measured in resource in the dedicated channel, each service of each serving cell of the first base station and second base station Transmission of the cell without uplink signal and downlink signal.

6. the inter-cell interference cancellation method as described in claims 1 to 3 is any, which is characterized in that in the tune by being distributed It spends before the transmission that resource carries out the descending scheduling user data, the method further includes：

According to the channel information of second base station feedback, precoding is carried out to the data of the descending scheduling user；

7. a kind of inter-cell interference cancellation method, suitable for co-channel full duplex communication system simultaneously, which is characterized in that including：

Second base station receives the downlink reference signal that the first base station adjacent with second base station is sent, and according to the downlink Reference signal carries out channel estimation to obtain corresponding channel information, wherein, accessed channel information includes described first Channel information between the transmission antenna of base station and the reception antenna of second base station；

By the feedback of channel information got to the first base station, so that the first base station was got according to Channel information distributes corresponding scheduling resource by descending scheduling user and passes through the scheduling resource distributed to the descending scheduling User carries out the transmission of data.

8. inter-cell interference cancellation method as claimed in claim 7, which is characterized in that

9. inter-cell interference cancellation method as claimed in claim 8, which is characterized in that

10. the inter-cell interference cancellation method as described in claim 7~9 is any, which is characterized in that the method further includes：

If according to the channel information got, the interference channel work(between the first base station and second base station is determined Rate is more than given threshold, it indicates that the first base station distributes dedicated channel for second base station and measures resource and described special With the transmission that the downlink reference signal is carried out in channel measurement resource.

11. inter-cell interference cancellation method as claimed in claim 10, which is characterized in that

12. the inter-cell interference cancellation method as described in claim 7~9 is any, which is characterized in that by the letter got Road information feeds back to the first base station, so that the channel information that the first base station is got according to is used for descending scheduling Family distributes corresponding scheduling resource and passes through the transmission that distributed scheduling resource carries out the descending scheduling user data, packet It includes：

By the feedback of channel information got to the first base station, so that the first base station was got according to Channel information distributes corresponding scheduling resource for descending scheduling user, and prelists to the data of the descending scheduling user Code and, by the scheduling resource distributed, the descending scheduling user data after precoding is sent.

13. a kind of base station, suitable for co-channel full duplex communication system simultaneously, which is characterized in that including：

Reference signal transmitting element, for sending downlink reference signal, so that the adjacent base station of the base station is according to the downlink Reference signal carries out channel estimation and obtains corresponding channel information；

Downlink data transmitting element, for being used according to the channel information that described information receiving unit receives for descending scheduling Corresponding scheduling resource is distributed at family, and passes through the transmission that distributed scheduling resource carries out the descending scheduling user data, Wherein, the channel that the channel information is included between the transmission antenna of the base station and the reception antenna of the adjacent base station is believed Breath.

14. base station as claimed in claim 13, which is characterized in that

The downlink reference signal respectively with the uplink reference signals of each serving cell of the base station and the adjacent base station Each serving cell uplink reference signals it is orthogonal；Alternatively,

Used in the downlink reference signal in resource, each serving cell of the base station and the adjacent base station it is each Serving cell carries out the transmission of upstream data by the way of silent.

15. base station as claimed in claim 14, which is characterized in that

When being not provided in the base station for dry between the transmission antenna to the base station and the reception antenna of the base station When disturbing the interference cancellation circuit that signal is eliminated, the downlink reference signal is also sent certainly dry for carrying out with the base station Disturb the signal in orthogonal of channel measurement.

16. the base station as described in claim 13~15 is any, which is characterized in that it is single that the base station further includes private resource distribution Member：

If the private resource allocation unit for the channel information fed back according to the adjacent base station, determines the base The interference channel power stood between the adjacent base station is more than given threshold, then distributes dedicated channel for the adjacent base station and survey Measure resource；

The reference signal transmitting element carries out the downlink reference signal specifically for being measured in the dedicated channel in resource Transmission.

17. base station as claimed in claim 16, which is characterized in that

It is measured in resource in the dedicated channel, each serving cell of the base station and each serving cell of the adjacent base station Transmission without uplink signal and downlink signal.

18. the base station as described in claim 13~15 is any, which is characterized in that the base station further includes data precoding list Member：

The data precoding unit, for carrying out data to the descending scheduling user in the scheduling resource by being distributed Before transmission, according to the channel information that the adjacent base station is fed back, prelist to the data of the descending scheduling user Code；

The downlink data transmitting element specifically for passing through distributed scheduling resource, is used the descending scheduling after precoding User data is sent.

19. a kind of base station, which is characterized in that suitable for co-channel full duplex communication system simultaneously, including：

Channel information acquisition unit, the downlink reference signal for being received according to the reference signal receiving unit carry out Channel estimation to obtain corresponding channel information, wherein, accessed channel information includes the transmission day of the adjacent base station Channel information between line and the reception antenna of the base station；

Feedback of channel information unit, for giving the feedback of channel information got to the adjacent base station, so that the phase The channel information that adjacent base station is got according to distributes corresponding scheduling resource by descending scheduling user and passes through what is distributed Scheduling resource carries out the descending scheduling user transmission of data.

20. base station as claimed in claim 19, which is characterized in that

The downlink reference signal respectively with the uplink reference signals of each serving cell of the adjacent base station and the base station Each serving cell uplink reference signals it is orthogonal；Alternatively,

Used in the downlink reference signal in resource, each serving cell of the adjacent base station and the base station it is each Serving cell carries out the transmission of upstream data by the way of silent.

21. base station as claimed in claim 20, which is characterized in that

When being not provided with the reception for the transmission antenna to the adjacent base station and the adjacent base station in the adjacent base station During the interference cancellation circuit that the interference signal between antenna is eliminated, the downlink reference signal is also sent out with the adjacent base station That send is used to carry out the signal in orthogonal of self-interference channel measurement.

22. the base station as described in claim 19~21 is any, which is characterized in that it is single that the base station further includes private resource instruction Member：

If the private resource indicating unit for according to the channel information got, determines the adjacent base station and institute The interference channel power stated between base station is more than given threshold, it indicates that the adjacent base station distributes dedicated channel for the base station It measures resource and the transmission that the downlink reference signal is carried out in resource is measured in the dedicated channel.

23. base station as claimed in claim 22, which is characterized in that

It is measured in resource in the dedicated channel, each serving cell of the adjacent base station and each serving cell of the base station Transmission without uplink signal and downlink signal.

24. the base station as described in claim 19~21 is any, which is characterized in that

The feedback of channel information unit, specifically for giving the feedback of channel information got to the adjacent base station, with The channel information that the adjacent base station is got according to is made to distribute corresponding scheduling resource for descending scheduling user, and to institute State descending scheduling user data carry out precoding and, by the scheduling resource distributed, to the descending scheduling after precoding User data is sent.

25. a kind of inter-cell interference cancellation system, suitable for co-channel full duplex communication system simultaneously, which is characterized in that including At least one first base station and at least one second base station, wherein：

The first base station, for sending downlink reference signal, and receive second base station feedback channel information and, Corresponding scheduling resource is distributed, and pass through distributed scheduling resource to described for descending scheduling user according to the channel information Descending scheduling user carries out the transmission of data, wherein, the transmission antenna of the channel information including the first base station with it is described Channel information between the reception antenna of second base station；

Second base station for receiving the downlink reference signal that the first base station is sent, and is believed according to the descending reference Number carry out channel estimation with obtain corresponding channel information and, by accessed feedback of channel information give first base It stands.