CN104902485A - Method for suppressing interference between same kinds of nodes in full duplex cooperative transmission - Google Patents

Method for suppressing interference between same kinds of nodes in full duplex cooperative transmission Download PDF

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Publication number
CN104902485A
CN104902485A CN201410076883.4A CN201410076883A CN104902485A CN 104902485 A CN104902485 A CN 104902485A CN 201410076883 A CN201410076883 A CN 201410076883A CN 104902485 A CN104902485 A CN 104902485A
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node
base station
panel
interference
center processor
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韩圣千
刘鑫
杨晨阳
孙鹏飞
喻斌
孙程君
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Beijing Samsung Telecom R&D Center
Beijing Samsung Telecommunications Technology Research Co Ltd
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Beijing Samsung Telecommunications Technology Research Co Ltd
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Priority to CN201410076883.4A priority Critical patent/CN104902485A/en
Publication of CN104902485A publication Critical patent/CN104902485A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a method for suppressing interference between same kinds of nodes in full duplex cooperative transmission. The method comprises that a central processor in a full duplex cooperative transmission system receives current resource state information reported by any kind of nodes in the full duplex cooperative transmission system, wherein the any kind of nodes are base stations or user equipment; the central processor determines the transmission mode of each node in the any kind of nodes according to the received information; when any emitting node interferes with any receiving node, the central processor determines a suppression manner of the interference and notifies the any emitting node and the any receiving node; and the any emitting node and the any receiving node performs interference suppression according to the notification sent by the central processor. The method may effectively suppressing interference between same kinds of nodes in the full duplex cooperative transmission system.

Description

Similar internodal disturbance restraining method and equipment in full duplex cooperation transmission
Technical field
The application relates to full duplex cooperation transmission technology, particularly similar internodal disturbance restraining method and equipment in a kind of full duplex cooperation transmission.
Background technology
In order to meet the growing business demand of people, existing wireless communications system is just towards the future development of more High Data Rate.Compared with conventional cellular systems, LTE(Long Term Evolution) system have employed the more senior network architecture and transmission technology, all has greatly improved in the various aspects of performance such as transmission rate and the network coverage.But in the face of the fast development of intelligent terminal and mobile Internet, and people increase the blowout formula of wireless communication data rate demand, more advanced communication technology awaits development.The same with technology such as 3D-MIMO (Multi-input Multi-output), Massive MIMO and SCN (Small Cell Network), full-duplex communication, as a kind of more advanced communication technology, has very large application prospect in the Communication System Design in future.
Full-duplex communication refers to that compare with frequency division duplex technology with the Time division duplex in existing communication system, full-duplex communication effectively can improve the spectrum efficiency of wireless communication system at the same time with the transmitted in both directions frequently realizing up-downgoing.But the application of full-duplex communication is also faced with very large challenge.First, disturb except existing between node in conventional half duplex communication, namely descending base station to the interference of user and uplink user to the interference of base station, full-duplex communication performance is also limited to up-downgoing and disturbs with keeping pouring between defeated brought new node simultaneously, comprises the interference of base station to base station and the interference of user to user.Secondly, this internodal interference also limit effective utilization of Internet resources, be embodied in when full duplex user node accesses different base stations respectively in up-downgoing, very serious base station can be brought to disturb base station, thus limit the flexible access of full duplex user up-downgoing, be unfavorable for making full use of of Internet resources.Above-mentioned factor greatly limit the advantage of full-duplex communication.
Summary of the invention
The application provides similar internodal disturbance restraining method and equipment in a kind of full duplex cooperation transmission, effectively can suppress similar internodal interference.
For achieving the above object, the application adopts following technical scheme:
Similar internodal disturbance restraining method in full duplex cooperation transmission, comprising:
First node in full duplex cooperative transmission system reports the current resource status information of self to the center processor in described system;
Described first node receives the AF panel mode that described center processor is determined, carries out the process of AF panel;
Wherein, described center processor according to the information that described first node and Section Point report determine described first node current for upstream or downstream data receiver and described first node interference is produced to Section Point time, determine described AF panel mode; Or, described center processor according to the information that described first node and Section Point report determine described first node current for upstream or downstream data receiver and described second stage to first node time, determine described AF panel mode; Described first node and Section Point are base station, or first node and Section Point are subscriber equipment.
Preferably, when the described AF panel mode received is the AF panel of transmitting node,
If described first node is current is upstream or downstream data receiver, the process that then described first node carries out AF panel comprises: obtain the interference channel characteristic between described Section Point and described first node, according to this interference channel characteristic determination pre-coding matrix, send after precoding is carried out to transmission data;
If described first node is current is upstream or downstream data receiver, then the process that described first node carries out AF panel comprises: send training sequence, carry out the estimation of interference channel characteristic for described Section Point; Or the training sequence that the described first stage sends according to described Section Point, estimates interference channel characteristic, and sends to described Section Point.
Preferably, if described first node current be upstream or downstream data receiver, the interference channel characteristic between the described Section Point of described acquisition and described first node comprises:
The training sequence that described first node sends according to described Section Point, estimates described interference channel characteristic; Or,
Receive the interference channel characteristic that described Section Point sends.
Preferably, when the described AF panel mode received is the AF panel of receiving node,
If described first node is current is upstream or downstream data receiver, the process that then described first node carries out AF panel comprises: send the training sequence through precoding, the estimation of equivalent interference channel characteristic is carried out for described Section Point, wherein, the pre-coding matrix of described training sequence is identical with the pre-coding matrix that the upstream or downstream of any node send data;
If described first node is current is upstream or downstream data receiver, the process that then described first node carries out AF panel comprises: receive the training sequence through precoding that described Section Point sends, estimate equivalent interference channel characteristic, and determine to receive equalizer according to this equivalent interference channel characteristic, equilibrium treatment is carried out to reception data.
Preferably, when the described AF panel mode received is for associating AF panel,
If described first node is current is upstream or downstream data receiver, then the process that described first node carries out AF panel comprises: send training sequence, receive the transmitting precoding that described central processing node issues, and sends after carrying out precoding to transmission data; Or, receive the training sequence that described Section Point sends, estimate the interference channel characteristic between described first node and described Section Point, report described central processing node, and receive the transmitting precoding that described central processing node issues, send after precoding is carried out to transmission data;
If described first node is current is upstream or downstream data receiver, the process that then described first node carries out AF panel comprises: receive the training sequence that described Section Point sends, estimate the interference channel characteristic between described first node and described Section Point, report described central processing node, receive the reception balanced way that described central processing node issues, and equilibrium treatment is carried out to reception data; Or, send training sequence, receive the reception balanced way that described central processing node issues, equilibrium treatment is carried out to reception data;
Wherein, centered by described transmitting precoding or described reception balanced way, processor is determined according to the interference channel characteristic received.
Preferably, described first node is base station, when the described AF panel mode received is the AF panel based on data sharing,
If described first node is current is downlink data transmit leg, then the process that described first node carries out AF panel comprises: its downlink data and special training sequence are sent to described Section Point by backbone network by described first node;
If described first node is as upstream data recipient, the process that then described first node carries out AF panel comprises: described first node receives the downlink data and special training sequence that described Section Point sends, estimate the interference channel characteristic of described Section Point to self, and reconstruct the interference signal coming from described Section Point that described first node eating dishes without rice or wine to receive, from total Received signal strength of eating dishes without rice or wine, cut described interference signal.
Preferably, when described first node is current be downlink data transmit leg time, the downlink data that described first node is sent by backbone network is: through the downstream signal of precoding, or, eat dishes without rice or wine send original downlink data and precoding information.
Preferably, when described first node is base station, described training sequence is be exclusively used in the special training sequence estimating inter base station interference.
Preferably, when described first node is subscriber equipment, described training sequence is up training sequence;
Before described first node estimates described interference channel characteristic, receive the id information of described Section Point and the configuration information of up training sequence of described Section Point own base station transmission further by its own base station; And according to the up training sequence determined by described configuration information, carry out the estimation of described interference channel characteristic.
Preferably, when described first node is subscriber equipment, described training sequence is up training sequence;
If described first node is current is upstream or downstream data receiver, when then described first node carries out the process of AF panel, before the equivalent interference channel characteristic of estimation, receive the id information of described Section Point that described Section Point own base station sends, the configuration information of up training sequence and precoding information further by its own base station; And according to the precoding information of the up training sequence determined by described configuration information and described Section Point, carry out the estimation of described equivalent interference channel characteristic.
Preferably, when described first node is subscriber equipment, being undertaken by described first node own base station alternately between described first node and center processor.
Preferably, described current resource status information comprises: one or combination in any in antenna resources behaviour in service, half/full duplex type, load condition, interference level.
Preferably, when described first node is base station, described current resource status information comprises capacity and the time delay of backbone network further.
Similar internodal disturbance restraining method in full duplex cooperation transmission, comprising:
Center processor in full duplex cooperative transmission system receives the current resource status information that the arbitrary category node in described system reports; Described arbitrary category node is base station or subscriber equipment;
When according to the information received, described center processor determines that in described arbitrary category node, the current any node A being in emission state produces interference to the current any node B being in accepting state, determine AF panel mode, and notify described node A and Node B.
Preferably, described center processor determines that the suppressor mode of described interference is the AF panel of transmitting node;
The AF panel of described transmitting node comprises: described node A obtains the interference channel characteristic between described node A and Node B, and determining the transmitting precoding suppressing described interference channel characteristic, described node A sends after utilizing this transmitting precoding to carry out precoding to transmission data.
Preferably, described center processor determines that the suppressor mode of described interference is the AF panel of receiving node;
The AF panel of described receiving node comprises: the training sequence through precoding that described Node B sends according to described node A, estimate the equivalent interference channel characteristic through transmitting precoding after of described node A to self, and determine to receive balanced way according to described equivalent interference channel characteristic, carry out equilibrium treatment to received signal according to this reception balanced way.
Preferably, described center processor determines that the suppressor mode of described interference is associating AF panel;
Described center processor is after notifying that described node A and Node B carry out associating AF panel, described center processor receives the interference channel characteristic therebetween of described node A or Node B feedback further, determine the transmitting precoding of described node A and the reception balanced way of Node B, notify described node A and described Node B respectively;
Described associating AF panel comprises: described node A sends after carrying out precoding according to the transmitting precoding that described center processor notifies to transmission data, and the reception balanced way that described Node B notifies according to described center processor carries out equilibrium treatment to reception data.
Preferably, described arbitrary category node is base station, and described center processor determines that the suppressor mode of described interference is the AF panel based on data sharing;
The described AF panel based on data sharing comprises: what described node A was sent by backbone network sends to described Node B through the downstream signal of precoding or the downlink data of transmission and precoding information, described Node B estimates the interference channel characteristic of described node A to self, and reconstruct the interference signal coming from described node A that described Node B eating dishes without rice or wine to receive, from total Received signal strength of eating dishes without rice or wine, directly cut described interference signal.
Preferably, described current resource status information comprises: one or combination in any in antenna resources behaviour in service, half/full duplex type, load condition, interference level.
Preferably, when described arbitrary category node is base station, described current resource status information comprises capacity and the time delay of backbone network further.
Preferably, when described arbitrary category node is subscriber equipment, the information transmission between described center processor and described node A or Node B is undertaken by the base station belonging to described node A or described Node B.
Similar internodal disturbance restraining method in full duplex cooperation transmission, comprising:
Center processor in full duplex cooperative transmission system receives the current resource status information that the arbitrary category node in described system reports; Described arbitrary category node is base station or subscriber equipment;
When according to the information received, described center processor determines that in described arbitrary category node, the current any node A being in emission state produces interference to the current any node B being in accepting state, determine the suppressor mode of described interference, and notify described node A and Node B;
The notice that described node A and described Node B issue according to described center processor, carries out AF panel.
Preferably, described center processor determines that the suppressor mode of described interference is the AF panel of transmitting node;
Described node A and described Node B are carried out described AF panel and are comprised: described node A obtains the interference channel characteristic between node A and Node B, and determine the transmitting precoding suppressing described interference channel characteristic, send after utilizing this transmitting precoding to carry out precoding to transmission data.
Preferably, the interference channel characteristic that described node A obtains between node A and Node B comprises: the training sequence that described node A sends according to described Node B, estimates the interference channel characteristic between described Node B and described node A; Or the training sequence that described Node B sends according to described node A, estimates the interference channel characteristic between described Node B and described node A, and sends to described node A.
Preferably, when described arbitrary category node is base station, the training sequence that described node A and described Node B send is special training sequence; And/or,
When described arbitrary category node is subscriber equipment, the training sequence that described node A and described Node B send is respective up training sequence; Wherein, described node A receives the id information of the described Node B that described Node B own base station sends and up training sequence configuration information by the base station belonging to it, and described Node B receives the id information of the described node A that described node A own base station sends and up training sequence configuration information by the base station belonging to it.
Preferably, described center processor determines that the suppressor mode of described interference is the AF panel of receiving node;
Described node A and described Node B are carried out described AF panel and are comprised: described Node B estimates the equivalent interference channel characteristic through transmitting precoding after of described node A to self, and determine to receive balanced way according to described equivalent interference channel characteristic, carry out equilibrium treatment to received signal.
Preferably, when described arbitrary category node is base station, described Node B estimates that described equivalent interference channel characteristic comprises: the special training sequence that node A described in described Node-B receiver sends, and estimates described equivalent interference channel characteristic; And/or,
When described arbitrary category node is subscriber equipment, described Node B estimates that described equivalent interference channel characteristic comprises: the up training sequence of node A described in described Node-B receiver, and according to the precoding information of described node A, estimates described equivalent interference channel characteristic; Wherein, described Node B receives the id information of described node A that described node A own base station sends, the configuration information of described up training sequence and described precoding information by its own base station.
Preferably, described center processor determines that the suppressor mode of described interference is associating AF panel, and receive the interference channel characteristic therebetween of described Node B or node A feedback further, determine the transmitting precoding of described node A and the reception balanced way of described node A, notify described node A and described Node B respectively;
Described node A and described Node B are carried out AF panel and are comprised: described node A sends after carrying out precoding according to the transmitting precoding that described center processor notifies to transmission data, and the reception balanced way that described Node B notifies according to described center processor carries out equilibrium treatment to reception data.
Preferably, when described arbitrary category node is base station,
Therebetween interference channel characteristic described in described Node B feedback comprises: the special training sequence that described Node B sends according to described node A, estimates the interference channel characteristic of described node A to described Node B, and sends to described center processor;
Therebetween interference channel characteristic described in described node A feeds back comprises: the special training sequence that described node A sends according to described Node B, estimates the interference channel characteristic of described Node B to described node A, and sends to described center processor.
Preferably, when described arbitrary category node is subscriber equipment,
Therebetween interference channel characteristic described in described Node B feedback comprises: the up training sequence of node A described in described Node-B receiver, estimate the interference channel characteristic of described node A to described Node B, and send to described center processor by the base station belonging to described Node B; Wherein, described Node B receives the id information of described node A and the configuration information of up training sequence of described node A own base station transmission by its own base station;
Therebetween interference channel characteristic described in described node A feeds back comprises: the up training sequence that described node A sends according to described Node B, estimates the interference channel characteristic of described Node B to described node A, and sends to described center processor; Wherein, described node A receives the id information of described Node B and the configuration information of up training sequence of described Node B own base station transmission by its own base station.
Preferably, described arbitrary category node is base station, and described center processor determines that the suppressor mode of described interference is the AF panel based on data sharing;
Described node A and described Node B are carried out AF panel and are comprised: what described node A was sent by backbone network sends to described Node B through the downstream signal of precoding or the downlink data of transmission and precoding information, described Node B estimates the interference channel characteristic of described node A to self, and reconstruct the interference signal coming from described node A that described Node B eating dishes without rice or wine to receive, from total Received signal strength of eating dishes without rice or wine, directly cut described interference signal.
Preferably, described current resource status information comprises: one or combination in any in antenna resources behaviour in service, half/full duplex type, load condition, interference level.
Preferably, when described arbitrary category node is base station, described current resource status information comprises capacity and the time delay of backbone network further.
Preferably, when described arbitrary category node is subscriber equipment, the information transmission between described center processor and node A or described Node B is undertaken by the base station belonging to described node A or described Node B.
Node device in full duplex cooperation transmission, comprising: information reporting unit, AF panel mode determining unit and AF panel processing unit;
Described information reporting unit, for reporting the current resource status information of self to the center processor in described system;
Described AF panel mode determining unit, for receiving the AF panel mode that described center processor is determined;
Described AF panel processing unit, for according to described AF panel mode, carries out the process of AF panel;
Wherein, described center processor according to the information that first node equipment and Section Point equipment report determine described first node equipment current for upstream or downstream data receiver and described first node equipment interference is produced to described Section Point equipment time, determine described AF panel mode; Or, described center processor according to the information that described first node equipment and Section Point equipment report determine described first node equipment current for upstream or downstream data receiver and described Section Point equipment interference is produced to described first node equipment time, determine described AF panel mode; Described first node equipment and second stage equipment are base station, or first stage equipment and second stage equipment are subscriber equipment.
Center processor in full duplex cooperative transmission system, comprising: nodal information receiving element, AF panel mode are determined and notification unit;
Described nodal information receiving element, the current resource status information that the arbitrary category node for receiving in described system reports;
Described AF panel mode is determined and notification unit, for when determining that according to the information of described nodal information receiving element reception the current any node A being in emission state in described arbitrary category node produces interference to the current any node B being in accepting state, determine AF panel mode, and notify described node A and described Node B.
Preferably, described center processor is the specific installation independent of subscriber equipment and base station, or described center processor is the specific base in system.
Full duplex cooperative transmission system, this system comprises base station, subscriber equipment and center processor;
Described base station, for communicating with described subscriber equipment, and reports current resource status information to described center processor, and according to the AF panel mode that described center processor notifies, carries out corresponding AF panel process;
Described subscriber equipment, for communicating with described base station, and reports current resource status information to described center processor, and according to the AF panel mode that described center processor notifies, carries out corresponding AF panel process;
Described center processor, when information for reporting according to same class node device in base station or subscriber equipment determines that the current any node device A being in emission state in such node device produces interference to the current any node equipment B being in accepting state, determine the suppressor mode of described interference, and notify described node device A and described node device B.
As seen from the above technical solution, in the application, the current resource status information that certain category node in center processor receiving system reports is set in full duplex cooperative transmission system, when determining that according to this information certain transmitting node in each same category node produces interference to certain receiving node, center processor determines the suppressor mode for this interference, and notifies corresponding transmitting node and receiving node; The notice that corresponding transmitting node and receiving node issue according to center processor carries out AF panel.By the way, determine similar internodal current disturbance regime by center processor, reinform and disturb the interdependent node related to carry out AF panel, thus effectively suppress similar internodal interference.
Accompanying drawing explanation
Fig. 1 is structure and the information transmission schematic diagram of full duplex cooperative transmission system;
Fig. 2 is the basic procedure schematic diagram of similar internodal disturbance restraining method in the application.
Embodiment
In order to make the object of the application, technological means and advantage clearly understand, below in conjunction with accompanying drawing, the application is described in further details.
Fig. 1 is structure and the information transmission schematic diagram of full duplex cooperative transmission system in the application.In FIG, two cooperative base station are connected with center processor (CU) by backbone network, and the user be respectively in Liang Ge community (or sector) provides service.Two base stations are designated as j, k respectively, and each base station has N broot antenna; Difference service-user p on same running time-frequency resource, q, each user has N uroot antenna.Wherein, center processor can be a separate network node being different from base station, is responsible for the signal processing tasks of all base stations be attached thereto; Also can be some base stations with stronger signal handling capacity, the signal processing tasks of all the other all base stations be responsible for process self and be attached thereto.
System shown in Fig. 1 can support multiple transmission mode, comprising:
1, transmission mode 1: user p and user q is in different transmitting and receiving states.Such as, user p is receiving the downstream signal from base station j, and user q is to base station k transmit uplink signal.
2, transmission mode 2: certain customers are in full-duplex communication state.Such as, user p sends upward signal to base station j while receiving the downstream signal from base station j, and user q only receives the downstream signal from base station k.
3, transmission mode 3: user p and user q is in full-duplex communication state.Such as, user p sends upward signal to base station j while receiving the downstream signal from base station j, and user q sends upward signal to base station k while receiving the downstream signal from base station k.
From above-mentioned, transmission mode 1 and transmission mode 2 can be regarded as the special case of transmission mode 3, and namely constraint portions user can only carry out one-way communication.Transmission mode wherein illustrates for the transmission mode of subscriber equipment, and the transmission mode of base station is same as described above, just repeats no more here.Invented full duplex cooperation transmission method is described below using transmission mode 3 as embodiment.
For the down link of the up link of base station j and user p, the Received signal strength of base station end and user side can be expressed as:
Wherein, in base station end, represent the uplink transport channel between user p and base station j, w pjrepresent the transmitting precoding vector of user p, represent that user p issues the upstream data of base station j; represent the uplink transport channel between user q and base station j, w qkrepresent the transmitting precoding vector of user q, represent that user q issues the upstream data of base station k; represent interference channel between base station k and base station j, w kqrepresent the transmitting precoding vector of base station k, represent that base station k issues the downlink data of user q; n jrepresent the white Gauss noise of base station j receiving terminal, average is zero, and variance is at user side, represent the descending transmission channel between base station j and user p, w jprepresent the transmitting precoding vector of base station j, represent that base station j issues the downlink data of user p; represent the descending transmission channel between base station k and user p, w kqrepresent the transmitting precoding vector of base station k, represent that base station k issues the downlink data of user q; represent the interference channel between user q and user p, w qkrepresent the transmitting precoding vector of user q, represent that user q issues the upstream data of base station k; n prepresent the white Gauss noise of user p receiving terminal, average is zero, and variance is
Suppress mainly for the same category node interference in above-mentioned formula (1) and formula (2) in the application, and for the suppression of foreign peoples's node interference not within the discussion scope of the application.Particularly, base station j, user p and base station k, user q are all in full duplex state, and for the up link of base station j, base station j is while reception upstream data, may receive the downstream signal that base station k issues user q, this downstream signal is the same category node interference that base station j receives; For the down link of user p, user p, while downlink data receiving, may receive the upward signal that user q issues base station k, and this upward signal is the same category node interference that user p receives.
The same category node disturbance restraining method provided in the application, comprises the process of node side and the process of center processor side, and both sides cooperatively interact and realize similar internodal AF panel.For clarity sake, the process of the process of node side and center processor side is described in describing by method below in the lump.Fig. 2 is the overview flow chart with category node disturbance restraining method in the application.As shown in Figure 2, the method comprises:
Step 201, in full duplex cooperative transmission system, arbitrary category node reports current resource status information to center processor.
Wherein, can be base station or subscriber equipment for carrying out the node of same category node AF panel, therefore, in this step, reporting the arbitrary class in the node of current resource status information i.e. base station or subscriber equipment.The current resource status information reported can comprise: one or combination in any in antenna resources behaviour in service, half/full duplex type, load condition, interference level.Further, base station can also carry capacity and the time delay of backbone network further when reporting current resource status information.
Step 202, center processor determines the transmission mode of each node in this category node according to the current resource status information of the same category node received.
According to the current resource status information that certain category node in step 201 reports, determine the transmission mode of other nodes similar with this node, such as, receive or send, for determining type and the mode of similar interference.Wherein, refer to it is all base stations with category node, or are all subscriber equipmenies.
Step 203, when center processor determines that certain transmitting node belonging to same category node produces interference to another receiving node, center processor determines the suppressor mode of corresponding interference, and notifies corresponding transmitting node and receiving node.
The current resource status information that center processor can report according to node is determined produce between which node between same category node and is disturbed.Such as, two nodes being in different launch and accept state that internodal distance is less than particular value can produce interference, or node can detect the similar interference that other nodes produce self, and by current resource status information reporting to center processor.The application does not limit for producing the mode disturbed between same category node between center processor determination node.
In the application, base station and subscriber equipment belong to inhomogeneous node, refer to it is all base station with category node, or are all subscriber equipmenies.In addition, in the description of the application, transmitting node and receiving node belong to same category node, and (such as transmitting node and receiving node are all base stations, or transmitting node and receiving node are all subscriber equipmenies), transmitting node refers to the current node being in emission state, and receiving node refers to the current node being in accepting state.For semiduplex node, can only be at a time transmitting node or receiving node, and for the node of full duplex, can be at a time transmitting node, be also receiving node.
Center processor can according to the Current resource situation of transmitting node and receiving node, determine corresponding AF panel mode, such as, when the antenna resources of receiving node is more sufficient, the multiple antennas of receiving node can be utilized to carry out similar internodal AF panel, namely carry out the AF panel of receiving node; When the antenna resources of transmitting node is more sufficient, the multiple antennas of transmitting node can be utilized to carry out similar internodal AF panel, namely carry out the AF panel of transmitting node; Or, can also preliminary treatment be carried out respectively at transmitting node and receiving node and receive AF panel, combine and carry out AF panel.
Step 204, the notice that transmitting node and receiving node issue according to center processor, carries out AF panel.
The AF panel mode that transmitting node and receiving node notify according to center processor, carries out corresponding AF panel process.Such as, when carrying out the AF panel of receiving node, receiving node receives equalizer according to the equivalent interference channel characteristics design after precoding between transmitting node to receiving node, carries out equilibrium treatment to received signal, namely can eliminate the interference that transmitting node produces this receiving node; When carrying out the AF panel of transmitting node, transmitting node launches precoding according to the interference channel characteristics design between transmitting node and receiving node, suppresses, just can eliminate the interference that transmitting node produces receiving node to corresponding interference channel; When carrying out the associating AF panel of transmitting node and receiving node, by center processor according to the interference channel characteristic of transmitting node to receiving node, the precoding of co-design transmitting node and the reception equalizer of receiving node, thus the interference that elimination transmitting node produces receiving node; When node is base station, AF panel mode can also be the AF panel based on data, its downlink data (comprising precoding information) is sent by backbone network to reception base station by transmitting base station, after receiving base station acquisition transmitting base station and receiving the interference channel characteristic between base station, reconstruct transmitting base station through the downstream signal of precoding, and deducts the downstream signal of transmitting base station transmission from total Received signal strength of eating dishes without rice or wine.
So far, the similar internodal disturbance restraining method flow process in the application terminates.As mentioned above, in the application, similar internodal AF panel can be applied to base station, carries out the AF panel between base station, also can be applied to subscriber equipment, carries out the AF panel between subscriber equipment.Introduce the AF panel between base station and the AF panel between subscriber equipment below respectively, and AF panel types different for correspondence is described in detail.
One, the AF panel of base station end
Below for the system configuration shown in Fig. 1, illustrate and utilize the method for the application to suppress base station k to the interference of base station j.
The AF panel of A, transmitting base station
Preferably, when the antenna resources of transmitting base station k is more sufficient, can utilize the interference that the preliminary treatment of transmitting base station suppresses between base station, detailed process is as follows:
Step 301, each base station is to the current resource status information of center processor reporting base station end.
Wherein, current resource status information can comprise antenna resources behaviour in service, half/full duplex type, load condition, the capacity of backbone network and the information such as time delay, interference level.
Step 302, center processor determines the transmission mode of each base station; When transmitting base station k produces interference to reception base station j, carry out preliminary treatment by transmitting base station k to transmitting, and issue to transmitting base station and reception base station the instruction that cooperates accordingly.
Step 303, after receiving the cooperation instruction of center processor, base station k obtains the interference channel characteristic of base station k to base station j.
Particularly, the mode obtaining the interference channel characteristic of base station k to base station j can be: when between base station during channel reciprocity, can by sending the interference channel of special training sequence for base station k estimation base station j to base station k by base station j to base station k as the interference channel characteristic of base station k to base station j or the whether reciprocity of the channel no matter between base station, can also send special training sequence by base station k to base station j and estimate the interference channel of base station k to it for base station j then by base station j to interference channel carry out quantizing and utilize dedicated signaling to feed back to base station k, thus making base station k obtain its interference channel to base station j
Step 304, base station k is based on the interference channel obtained precoding w is launched in design kq, send after carrying out precoding to transmitting, for suppressing the interference to base station j.
The AF panel of B, reception base station
Preferably, when the antenna resources receiving base station j is more sufficient, can utilize the relevant detection receiving base station, suppress the interference between base station, detailed process is as follows:
Step 401, each base station is to the current resource status information of center processor reporting base station end.
Wherein, current resource status information can comprise antenna resources behaviour in service, half/full duplex type, load condition, the capacity of backbone network and the information such as time delay, interference level.
Step 402, center processor determines the transmission mode of each base station; When transmitting base station k is to reception base station j generation interference, determines to be suppressed reception interference signal by reception base station j, and issue to transmitting base station and reception base station the instruction that cooperates accordingly.
Step 403, after receiving the cooperation instruction of center processor, base station k sends special training sequence to base station j and estimates the equivalent interference channel through transmitting precoding after of base station k to it for base station j
For carrying out the estimation of equivalent interference channel, base station k is the special training sequence through precoding to the special training sequence that base station j sends.
Step 404, base station j is based on the equivalent interference channel of acquisition design receives equalizer carry out equilibrium treatment to received signal, for suppressing the interference from base station k.
C, transmitting base station combine AF panel with reception base station
Usually, transmitting base station k and reception base station j can carry out associating AF panel, and detailed process is as follows:
Step 501, each base station is to the current resource status information of center processor reporting base station end.
Wherein, current resource status information can comprise antenna resources behaviour in service, half/full duplex type, load condition, the capacity of backbone network and the information such as time delay, interference level.
Step 502, center processor determines the transmission mode of each base station; When transmitting base station k is to reception base station j generation interference, determines that transmitting base station completes AF panel with reception is base stations united, and issue to transmitting base station and reception base station the instruction that cooperates accordingly.
Step 503, after receiving the cooperation instruction of center processor, base station k or base station j obtains the interference channel characteristic of base station k to base station j, and by Backbone Transport to center processor.
Wherein, the mode of the interference channel characteristic of base station k or base station j acquisition base station k to base station j can adopt the mode in abovementioned steps 303, namely according to the channel reciprocity between base station, the interference channel characteristic of base station j to base station k can be estimated according to the special training sequence that base station j sends by base station k as the interference channel characteristic of base station k to base station j or, also can be estimated the interference channel characteristic of base station k to base station j according to the special training sequence that base station k sends by base station j
Step 504, center processor is based on the interference channel obtained the transmitting precoding w of co-design base station k kqwith the reception equalizer of base station j and by the transmitting precoding w of design kqwith reception equalizer transfer to base station k and base station j respectively, for the interference of joint base station k to base station j.
Step 505, the transmitting precoding w that base station k issues according to center processor kqsend after precoding is carried out to transmission data, the reception equalizer that base station j issues according to center processor carry out equilibrium treatment to received signal.
D, AF panel based on data sharing
Preferably, when backbone capacity is comparatively large and time delay is lower, the data sharing between base station can be utilized to complete AF panel in reception base station, and detailed process is as follows:
Step 601, each base station is to the current resource status information of center processor reporting base station end.
Wherein, current resource status information can comprise antenna resources behaviour in service, half/full duplex type, load condition, the capacity of backbone network and the information such as time delay, interference level.
Step 602, center processor determines the transmission mode of each base station; When transmitting base station k is to when receiving base station j generation interference, determines to utilize data sharing between base station to complete AF panel in reception base station end, and issue to transmitting base station and reception base station the instruction that cooperates accordingly.
Step 603, after receiving the cooperation instruction of center processor, has two kinds of cooperation modes:
1, the downstream signal after precoding launched of base station k by Backbone Transport to base station j, or also can respectively by transmitting precoding w kqand initial data by Backbone Transport to base station j; Meanwhile, base station k sends special training sequence for the interference channel of base station j estimation base station k to it to base station j downstream signal after the information determination precoding that base station j utilizes Backbone Transport to come (can be the downstream signal directly received after precoding or by transmitting precoding w kqand initial data reconstruct downstream signal ), then the base station k obtained according to the downstream signal after precoding and estimation is to its interference channel reconstruct the interference signal that it receives and directly cut from total Received signal strength.
2, after receiving the cooperation instruction of center processor, the initial data that base station k is launched by Backbone Transport to base station j; Meanwhile, base station k is used for the equivalent interference channel through precoding after of base station j estimation base station k to it to the base station j special training sequence sent through launching precoding the initial data that base station j utilizes Backbone Transport to come with the equivalent interference channel of the base station k estimating to obtain to it reconstruct the interference signal that it receives and directly cut from total Received signal strength.
Above-mentionedly be the method specific implementation that base station side carries out inter base station interference suppression.Introduce the specific implementation of the method for AF panel between subscriber equipment below.
Two, the AF panel between subscriber equipment
Wherein, for the system configuration shown in Fig. 1, illustrate and suppress user q to the specific implementation of the interference of user p.When carrying out AF panel between subscriber equipment, need the transmission carrying out relevant information between subscriber equipment and center processor, the transmission here between subscriber equipment and center processor is all undertaken by the base station belonging to subscriber equipment.
The AF panel of A, transmitting user
Preferably, when the antenna resources launching user q is more sufficient, the multiple antennas launching user can be utilized to suppress to disturb between user node, and the AF panel of method and base station end is similar, according to the whether reciprocity of the channel between interference user, the AF panel launching user specifically has the following two kinds implementation:
Mode one: channel reciprocity between interference user
Step 701, user reports respective current resource status information to base station.
Wherein, current resource status information can comprise antenna resources behaviour in service, partly/full duplex type, load condition, interference level.
Step 702, the reporting information of each user is offered center processor by base station.
Step 703, center processor determines the transmission mode of each user; When launching user q and producing interference to reception user p, determine to utilize the multiple antennas launching user side to suppress interference, and issue command adapted thereto to each base station, instruction is issued respective user by each base station again.
Step 704, by dedicated signaling, the id information of user p, up training sequence configuration information are sent to base station k, then send to user q by base station k by base station j.
Step 705, user q, according to the up training sequence configuration information of user p, utilizes the reciprocity of interchannel, estimates by the up training sequence receiving user p the interference channel that it arrives user p
Step 706, user q is based on the interference channel obtained precoding w is launched in design qk, send, for suppressing the interference to user p after precoding is carried out to transmission data.
Mode two: between interference user, channel is nonreciprocal
Step 801, user reports respective current resource status information to base station.
Wherein, current resource status information can comprise antenna resources behaviour in service, partly/full duplex type, load condition, interference level.
Step 802, the reporting information of each user is offered center processor by base station.
Step 803, center processor determines the transmission mode of each user; When launching user q and producing interference to reception user p, determine to utilize the multiple antennas launching user side to suppress interference, and issue command adapted thereto to each base station, instruction is issued respective user by each base station again.
Step 804, by dedicated signaling, the id information of user q, up training sequence configuration information are sent to base station j, then send to user p by base station j by base station k.
Step 805, user p, according to the up training sequence configuration information of user q, estimates the interference channel of user q to it by the up training sequence receiving user q user q is fed back to after being quantized.The feedback system of interference channel can have directly feedback and indirect feedback two kinds:
A, directly feedback: mutual by dedicated signaling between user, the interference channel that user p directly will quantize be sent to user q;
B, indirect feedback: by dedicated signaling, the interference channel that user p first will quantize feed back to base station j, then by base station j transmit interference channel is sent to base station k, finally by base station k by interference channel be sent to user q.
Step 806, user q is based on the interference channel obtained design precoding vector w qk, send, for suppressing the interference to user p after precoding is carried out to transmission data.
The AF panel of B, reception user
Preferably, when the antenna resources receiving user p is more sufficient, the multiple antennas receiving user can be utilized to suppress to disturb between user node, specific as follows:
Step 901, user reports respective current resource status information to base station.
Wherein, current resource status information can comprise antenna resources behaviour in service, partly/full duplex type, load condition, interference level;
Step 902, the reporting information of each user is offered center processor by base station.
Step 903, center processor determines the transmission mode of each user; When launching user q and producing interference to reception user p, determine to utilize the multiple antennas receiving user side to suppress interference, and send instructions under each base station, instruction is issued respective user by each base station again.
Step 904, by dedicated signaling, the id information of user q, up training sequence configuration information, precoding information are sent to base station j, then send to user p by base station j by base station k.
Step 905, user p, according to the up training sequence configuration information of user q, estimates the equivalent interference channel through transmitting precoding after of user q to it by the up training sequence receiving user q
Wherein, the interference channel characteristic of the up training sequence estimating user q to user p that user p sends according to user q, recycling precoding information w qkwith interference channel characteristic estimate the equivalent interference channel after precoding
Step 906, user p is according to the equivalent interference channel obtained design receives equalizer v p, carry out equilibrium treatment to received signal, for suppressing user q to the interference of user p.
C, launch user and receive the associating AF panel of user
More usually, launch user and receive user and can do preliminary treatment respectively and receive AF panel, combined AF panel, detailed process is as follows:
Step 1001, user reports respective current resource status information to base station.
Wherein, current resource status information can comprise antenna resources behaviour in service, partly/full duplex type, load condition, interference level.
Step 1002, the reporting information of each user is offered center processor by base station.
Step 1003, center processor determines the transmission mode of each user; When launching user q and producing interference to reception user p, determine to launch user and receive user to have combined AF panel, and send instructions under each base station, instruction is issued respective user by each base station again.
Step 1004, by dedicated signaling, the id information of user q, up training sequence configuration information are sent to base station j, then send to user p by base station j by base station k.
Step 1005, user p, according to the up training sequence configuration information of user q, estimates the interference channel of user q to it by the up training sequence receiving user q and by dedicated signaling by interference channel feed back to base station j, and transfer to center processor further.
Certainly, between user during channel reciprocity, this step also by the interference channel of user q according to the up training sequence estimating user p to user q of user p, as the interference channel of user q to user p, and can send to center processor by the base station belonging to user q.Accordingly, in step 1004, by base station j, the id information of user p, up training sequence configuration information are sent to base station k, then send to user q by base station k.
Step 1006, center processor is according to the information obtained, and co-design launches precoding w qkwith reception equalizer and precoding w will be launched by base station k qkbe transferred to user q, will equalizer be received by base station j being transferred to user p, suppressing user q to the interference of user p for combining.
Step 1007, the transmitting precoding w that user q sends according to base station k qksend after precoding is carried out to transmission data, the reception equalizer that user p sends according to base station j carry out equilibrium treatment to received signal.
Between subscriber equipment, the method flow of AF panel is carried out in the above-mentioned the application of being.
Present invention also provides the node device in full duplex cooperative transmission system and system and center processor.Particularly, full duplex cooperative transmission system as shown in Figure 1, can comprise center processor, base station and subscriber equipment.Wherein, center processor, when information for reporting according to same class node device in base station or subscriber equipment determines that the current any node device A being in emission state in such node device produces interference to the current any node equipment B being in accepting state, determine the suppressor mode disturbed, and notifying section point device A and described node device B.Node device A wherein and node device B can be base station, or can be all subscriber equipment.
Particularly, center processor may further include nodal information receiving element, AF panel mode is determined and notification unit.Wherein, nodal information receiving element, for the current resource status information that the arbitrary category node in receiving system reports.AF panel mode is determined and notification unit, when the current any node A being in emission state for determining in arbitrary category node in the information received according to nodal information receiving element produces interference to the current any node B being in accepting state, determine AF panel mode, and notify node A and Node B.
Base station in full duplex cooperative transmission system intercoms mutually with subscriber equipment, further, for carrying out the AF panel of same category node, base station and subscriber equipment, also for reporting current resource status information to center processor, and according to the AF panel mode that center processor notifies, carry out corresponding AF panel process.
When the AF panel process carrying out same category node, base station and subscriber equipment can regard node device as, and concrete structure can comprise: information reporting unit, AF panel mode determining unit and AF panel processing unit.Wherein, information reporting unit, for reporting the current resource status information of self to the center processor in system.AF panel mode determining unit, for the AF panel mode that receiving center processor is determined.AF panel processing unit, for according to AF panel mode, carries out the process of AF panel.
As mentioned above, in the application in full duplex cooperative transmission system, effectively can suppress similar internodal interference, thus effectively improve systematic function.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.

Claims (38)

1. similar internodal disturbance restraining method in full duplex cooperation transmission, is characterized in that, comprising:
First node in full duplex cooperative transmission system reports the current resource status information of self to the center processor in described system;
Described first node receives the AF panel mode that described center processor is determined, carries out the process of AF panel;
Wherein, described center processor according to the information that described first node and Section Point report determine described first node current for upstream or downstream data receiver and described first node interference is produced to Section Point time, determine described AF panel mode; Or, described center processor according to the information that described first node and Section Point report determine described first node current for upstream or downstream data receiver and described second stage to first node time, determine described AF panel mode; Described first node and Section Point are base station, or first node and Section Point are subscriber equipment.
2. method according to claim 1, is characterized in that, when the described AF panel mode received is the AF panel of transmitting node,
If described first node is current is upstream or downstream data receiver, the process that then described first node carries out AF panel comprises: obtain the interference channel characteristic between described Section Point and described first node, according to this interference channel characteristic determination pre-coding matrix, send after precoding is carried out to transmission data;
If described first node is current is upstream or downstream data receiver, then the process that described first node carries out AF panel comprises: send training sequence, carry out the estimation of interference channel characteristic for described Section Point; Or the training sequence that the described first stage sends according to described Section Point, estimates interference channel characteristic, and sends to described Section Point.
3. method according to claim 2, is characterized in that, if described first node current be upstream or downstream data receiver, the interference channel characteristic between the described Section Point of described acquisition and described first node comprises:
The training sequence that described first node sends according to described Section Point, estimates described interference channel characteristic; Or,
Receive the interference channel characteristic that described Section Point sends.
4. method according to claim 1, is characterized in that, when the described AF panel mode received is the AF panel of receiving node,
If described first node is current is upstream or downstream data receiver, the process that then described first node carries out AF panel comprises: send the training sequence through precoding, the estimation of equivalent interference channel characteristic is carried out for described Section Point, wherein, the pre-coding matrix of described training sequence is identical with the pre-coding matrix that the upstream or downstream of any node send data;
If described first node is current is upstream or downstream data receiver, the process that then described first node carries out AF panel comprises: receive the training sequence through precoding that described Section Point sends, estimate equivalent interference channel characteristic, and determine to receive equalizer according to this equivalent interference channel characteristic, equilibrium treatment is carried out to reception data.
5. method according to claim 1, is characterized in that, when the described AF panel mode received is for associating AF panel,
If described first node is current is upstream or downstream data receiver, then the process that described first node carries out AF panel comprises: send training sequence, receive the transmitting precoding that described central processing node issues, and sends after carrying out precoding to transmission data; Or, receive the training sequence that described Section Point sends, estimate the interference channel characteristic between described first node and described Section Point, report described central processing node, and receive the transmitting precoding that described central processing node issues, send after precoding is carried out to transmission data;
If described first node is current is upstream or downstream data receiver, the process that then described first node carries out AF panel comprises: receive the training sequence that described Section Point sends, estimate the interference channel characteristic between described first node and described Section Point, report described central processing node, receive the reception balanced way that described central processing node issues, and equilibrium treatment is carried out to reception data; Or, send training sequence, receive the reception balanced way that described central processing node issues, equilibrium treatment is carried out to reception data;
Wherein, centered by described transmitting precoding or described reception balanced way, processor is determined according to the interference channel characteristic received.
6. method according to claim 1, is characterized in that, described first node is base station, when the described AF panel mode received is the AF panel based on data sharing,
If described first node is current is downlink data transmit leg, then the process that described first node carries out AF panel comprises: its downlink data and special training sequence are sent to described Section Point by backbone network by described first node;
If described first node is as upstream data recipient, the process that then described first node carries out AF panel comprises: described first node receives the downlink data and special training sequence that described Section Point sends, estimate the interference channel characteristic of described Section Point to self, and reconstruct the interference signal coming from described Section Point that described first node eating dishes without rice or wine to receive, from total Received signal strength of eating dishes without rice or wine, cut described interference signal.
7. method according to claim 6, it is characterized in that, when described first node is current be downlink data transmit leg time, the downlink data that described first node is sent by backbone network is: through the downstream signal of precoding, or, the original downlink data of transmission of eating dishes without rice or wine and precoding information.
8. according to described method arbitrary in claim 1 to 7, it is characterized in that, when described first node is base station, described training sequence is be exclusively used in the special training sequence estimating inter base station interference.
9. the method according to claim 2,3 or 5, is characterized in that, when described first node is subscriber equipment, described training sequence is up training sequence;
Before described first node estimates described interference channel characteristic, receive the id information of described Section Point and the configuration information of up training sequence of described Section Point own base station transmission further by its own base station; And according to the up training sequence determined by described configuration information, carry out the estimation of described interference channel characteristic.
10. method according to claim 4, is characterized in that, when described first node is subscriber equipment, described training sequence is up training sequence;
If described first node is current is upstream or downstream data receiver, when then described first node carries out the process of AF panel, before the equivalent interference channel characteristic of estimation, receive the id information of described Section Point that described Section Point own base station sends, the configuration information of up training sequence and precoding information further by its own base station; And according to the precoding information of the up training sequence determined by described configuration information and described Section Point, carry out the estimation of described equivalent interference channel characteristic.
11., according to described method arbitrary in claim 1 to 7, is characterized in that, when described first node is subscriber equipment, and being undertaken by described first node own base station alternately between described first node and center processor.
12. according to described method arbitrary in claim 1 to 7, and it is characterized in that, described current resource status information comprises: one or combination in any in antenna resources behaviour in service, half/full duplex type, load condition, interference level.
13. methods according to claim 12, is characterized in that, when described first node is base station, described current resource status information comprises capacity and the time delay of backbone network further.
Similar internodal disturbance restraining method in 14. full duplex cooperation transmission, is characterized in that, comprising:
Center processor in full duplex cooperative transmission system receives the current resource status information that the arbitrary category node in described system reports; Described arbitrary category node is base station or subscriber equipment;
When according to the information received, described center processor determines that in described arbitrary category node, the current any node A being in emission state produces interference to the current any node B being in accepting state, determine AF panel mode, and notify described node A and Node B.
15. methods according to claim 14, is characterized in that, described center processor determines that the suppressor mode of described interference is the AF panel of transmitting node;
The AF panel of described transmitting node comprises: described node A obtains the interference channel characteristic between described node A and Node B, and determining the transmitting precoding suppressing described interference channel characteristic, described node A sends after utilizing this transmitting precoding to carry out precoding to transmission data.
16. methods according to claim 14, is characterized in that, described center processor determines that the suppressor mode of described interference is the AF panel of receiving node;
The AF panel of described receiving node comprises: the training sequence through precoding that described Node B sends according to described node A, estimate the equivalent interference channel characteristic through transmitting precoding after of described node A to self, and determine to receive balanced way according to described equivalent interference channel characteristic, carry out equilibrium treatment to received signal according to this reception balanced way.
17. methods according to claim 14, is characterized in that, described center processor determines that the suppressor mode of described interference is associating AF panel;
Described center processor is after notifying that described node A and Node B carry out associating AF panel, described center processor receives the interference channel characteristic therebetween of described node A or Node B feedback further, determine the transmitting precoding of described node A and the reception balanced way of Node B, notify described node A and described Node B respectively;
Described associating AF panel comprises: described node A sends after carrying out precoding according to the transmitting precoding that described center processor notifies to transmission data, and the reception balanced way that described Node B notifies according to described center processor carries out equilibrium treatment to reception data.
18. methods according to claim 14, is characterized in that, described arbitrary category node is base station, and described center processor determines that the suppressor mode of described interference is the AF panel based on data sharing;
The described AF panel based on data sharing comprises: what described node A was sent by backbone network sends to described Node B through the downstream signal of precoding or the downlink data of transmission and precoding information, described Node B estimates the interference channel characteristic of described node A to self, and reconstruct the interference signal coming from described node A that described Node B eating dishes without rice or wine to receive, from total Received signal strength of eating dishes without rice or wine, directly cut described interference signal.
19. according to described method arbitrary in claim 14 to 18, and it is characterized in that, described current resource status information comprises: one or combination in any in antenna resources behaviour in service, half/full duplex type, load condition, interference level.
20. methods according to claim 19, is characterized in that, when described arbitrary category node is base station, described current resource status information comprises capacity and the time delay of backbone network further.
21. according to described method arbitrary in claim 14 to 18, it is characterized in that, when described arbitrary category node is subscriber equipment, the information transmission between described center processor and described node A or Node B is undertaken by the base station belonging to described node A or described Node B.
Similar internodal disturbance restraining method in 22. full duplex cooperation transmission, is characterized in that, comprising:
Center processor in full duplex cooperative transmission system receives the current resource status information that the arbitrary category node in described system reports; Described arbitrary category node is base station or subscriber equipment;
When according to the information received, described center processor determines that in described arbitrary category node, the current any node A being in emission state produces interference to the current any node B being in accepting state, determine the suppressor mode of described interference, and notify described node A and Node B;
The notice that described node A and described Node B issue according to described center processor, carries out AF panel.
23. methods according to claim 22, is characterized in that, described center processor determines that the suppressor mode of described interference is the AF panel of transmitting node;
Described node A and described Node B are carried out described AF panel and are comprised: described node A obtains the interference channel characteristic between node A and Node B, and determine the transmitting precoding suppressing described interference channel characteristic, send after utilizing this transmitting precoding to carry out precoding to transmission data.
24. methods according to claim 23, it is characterized in that, the interference channel characteristic that described node A obtains between node A and Node B comprises: the training sequence that described node A sends according to described Node B, estimates the interference channel characteristic between described Node B and described node A; Or the training sequence that described Node B sends according to described node A, estimates the interference channel characteristic between described Node B and described node A, and sends to described node A.
25. methods according to claim 24, is characterized in that, when described arbitrary category node is base station, the training sequence that described node A and described Node B send is special training sequence; And/or,
When described arbitrary category node is subscriber equipment, the training sequence that described node A and described Node B send is respective up training sequence; Wherein, described node A receives the id information of the described Node B that described Node B own base station sends and up training sequence configuration information by the base station belonging to it, and described Node B receives the id information of the described node A that described node A own base station sends and up training sequence configuration information by the base station belonging to it.
26. methods according to claim 22, is characterized in that, described center processor determines that the suppressor mode of described interference is the AF panel of receiving node;
Described node A and described Node B are carried out described AF panel and are comprised: described Node B estimates the equivalent interference channel characteristic through transmitting precoding after of described node A to self, and determine to receive balanced way according to described equivalent interference channel characteristic, carry out equilibrium treatment to received signal.
27. methods according to claim 26, it is characterized in that, when described arbitrary category node is base station, described Node B estimates that described equivalent interference channel characteristic comprises: the special training sequence that node A described in described Node-B receiver sends, and estimates described equivalent interference channel characteristic; And/or,
When described arbitrary category node is subscriber equipment, described Node B estimates that described equivalent interference channel characteristic comprises: the up training sequence of node A described in described Node-B receiver, and according to the precoding information of described node A, estimates described equivalent interference channel characteristic; Wherein, described Node B receives the id information of described node A that described node A own base station sends, the configuration information of described up training sequence and described precoding information by its own base station.
28. methods according to claim 22, it is characterized in that, described center processor determines that the suppressor mode of described interference is associating AF panel, and receive the interference channel characteristic therebetween of described Node B or node A feedback further, determine the transmitting precoding of described node A and the reception balanced way of described node A, notify described node A and described Node B respectively;
Described node A and described Node B are carried out AF panel and are comprised: described node A sends after carrying out precoding according to the transmitting precoding that described center processor notifies to transmission data, and the reception balanced way that described Node B notifies according to described center processor carries out equilibrium treatment to reception data.
29. methods according to claim 28, is characterized in that, when described arbitrary category node is base station,
Therebetween interference channel characteristic described in described Node B feedback comprises: the special training sequence that described Node B sends according to described node A, estimates the interference channel characteristic of described node A to described Node B, and sends to described center processor;
Therebetween interference channel characteristic described in described node A feeds back comprises: the special training sequence that described node A sends according to described Node B, estimates the interference channel characteristic of described Node B to described node A, and sends to described center processor.
30. methods according to claim 28, is characterized in that, when described arbitrary category node is subscriber equipment,
Therebetween interference channel characteristic described in described Node B feedback comprises: the up training sequence of node A described in described Node-B receiver, estimate the interference channel characteristic of described node A to described Node B, and send to described center processor by the base station belonging to described Node B; Wherein, described Node B receives the id information of described node A and the configuration information of up training sequence of described node A own base station transmission by its own base station;
Therebetween interference channel characteristic described in described node A feeds back comprises: the up training sequence that described node A sends according to described Node B, estimates the interference channel characteristic of described Node B to described node A, and sends to described center processor; Wherein, described node A receives the id information of described Node B and the configuration information of up training sequence of described Node B own base station transmission by its own base station.
31. methods according to claim 22, is characterized in that, described arbitrary category node is base station, and described center processor determines that the suppressor mode of described interference is the AF panel based on data sharing;
Described node A and described Node B are carried out AF panel and are comprised: what described node A was sent by backbone network sends to described Node B through the downstream signal of precoding or the downlink data of transmission and precoding information, described Node B estimates the interference channel characteristic of described node A to self, and reconstruct the interference signal coming from described node A that described Node B eating dishes without rice or wine to receive, from total Received signal strength of eating dishes without rice or wine, directly cut described interference signal.
32. according to the arbitrary described method of claim 22 to 31, and it is characterized in that, described current resource status information comprises: one or combination in any in antenna resources behaviour in service, half/full duplex type, load condition, interference level.
33. methods according to claim 32, is characterized in that, when described arbitrary category node is base station, described current resource status information comprises capacity and the time delay of backbone network further.
34. according to described method arbitrary in claim 22 to 31, it is characterized in that, when described arbitrary category node is subscriber equipment, the information transmission between described center processor and node A or described Node B is undertaken by the base station belonging to described node A or described Node B.
Node device in 35. full duplex cooperation transmission, is characterized in that, this node device comprises: information reporting unit, AF panel mode determining unit and AF panel processing unit;
Described information reporting unit, for reporting the current resource status information of self to the center processor in described system;
Described AF panel mode determining unit, for receiving the AF panel mode that described center processor is determined;
Described AF panel processing unit, for according to described AF panel mode, carries out the process of AF panel;
Wherein, described center processor according to the information that first node equipment and Section Point equipment report determine described first node equipment current for upstream or downstream data receiver and described first node equipment interference is produced to described Section Point equipment time, determine described AF panel mode; Or, described center processor according to the information that described first node equipment and Section Point equipment report determine described first node equipment current for upstream or downstream data receiver and described Section Point equipment interference is produced to described first node equipment time, determine described AF panel mode; Described first node equipment and second stage equipment are base station, or first stage equipment and second stage equipment are subscriber equipment.
Center processor in 36. full duplex cooperative transmission systems, is characterized in that, this center processor comprises: nodal information receiving element, AF panel mode are determined and notification unit;
Described nodal information receiving element, the current resource status information that the arbitrary category node for receiving in described system reports;
Described AF panel mode is determined and notification unit, for when determining that according to the information of described nodal information receiving element reception the current any node A being in emission state in described arbitrary category node produces interference to the current any node B being in accepting state, determine AF panel mode, and notify described node A and described Node B.
37. center processors according to claim 36, is characterized in that, described center processor is the specific installation independent of subscriber equipment and base station, or described center processor is the specific base in system.
38. full duplex cooperative transmission systems, is characterized in that, this system comprises base station, subscriber equipment and center processor;
Described base station, for communicating with described subscriber equipment, and reports current resource status information to described center processor, and according to the AF panel mode that described center processor notifies, carries out corresponding AF panel process;
Described subscriber equipment, for communicating with described base station, and reports current resource status information to described center processor, and according to the AF panel mode that described center processor notifies, carries out corresponding AF panel process;
Described center processor, when information for reporting according to same class node device in base station or subscriber equipment determines that the current any node device A being in emission state in such node device produces interference to the current any node equipment B being in accepting state, determine the suppressor mode of described interference, and notify described node device A and described node device B.
CN201410076883.4A 2014-03-04 2014-03-04 Method for suppressing interference between same kinds of nodes in full duplex cooperative transmission Pending CN104902485A (en)

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