CN105827276B - A kind of implementation method and local side access device of crosstalk counteracting - Google Patents
A kind of implementation method and local side access device of crosstalk counteracting Download PDFInfo
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- CN105827276B CN105827276B CN201610156585.5A CN201610156585A CN105827276B CN 105827276 B CN105827276 B CN 105827276B CN 201610156585 A CN201610156585 A CN 201610156585A CN 105827276 B CN105827276 B CN 105827276B
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Abstract
本发明实施例公开了一种串扰抵消的实现方法及局端接入设备，用于实现线路的串扰抵消，降低功耗。本发明实施例方法包括：获取每一条线路上时域转换TDD帧中的当前子帧；根据所述当前子帧在对应TDD帧中的位置序号，获取所述当前子帧的目标控制信息，所述目标控制信息为第一控制信息、第二控制信息和第三控制信息中的任意一种，所述第一控制信息指向第一种串扰抵消操作，所述第二控制信息指向第二种串扰抵消操作，所述第三控制信息指向第三种串扰抵消操作，所述第一种串扰抵消操作、第二种串扰抵消操作和第三种串扰抵消操作各不相同；对所述当前子帧执行所述目标控制信息所指向的串扰抵消操作。
The embodiment of the present invention discloses a method for realizing crosstalk cancellation and a central office access device, which are used for realizing crosstalk cancellation of lines and reducing power consumption. The method of the embodiment of the present invention includes: acquiring the current subframe in the time-domain converted TDD frame on each line; acquiring the target control information of the current subframe according to the position sequence number of the current subframe in the corresponding TDD frame, so that The target control information is any one of the first control information, the second control information and the third control information, the first control information points to the first type of crosstalk cancellation operation, and the second control information points to the second type of crosstalk Cancellation operation, the third control information points to a third type of crosstalk cancellation operation, the first type of crosstalk cancellation operation, the second type of crosstalk cancellation operation and the third type of crosstalk cancellation operation are different; performing on the current subframe The crosstalk cancellation operation pointed to by the target control information.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of implementation method and local side access device of crosstalk counteracting.
Background technique
In order to adapt to new situation and needs, there are a variety of Broadband Access Network Technologies.Divide from transmission medium, Ke Yifen
At a variety of wire access technology such as copper wire access technology, intelligent acess technology, Hybrid Fiber Coax access technologies and wirelessly connect
Enter technology etc., wherein copper wire access technology is using wider technology.Traditional copper wire access technology is only with limited access rate
Data service is provided, growing with data service, access rate experienced the Asymmetrical Digital Subscriber Line of 8M
(Asymmetrical Digital Subscriber Line, abbreviation ADSL) technology, 100,000,000 Very High Speed Digital Subscriber Line
(Very High Speed Digital Subscriber Line, abbreviation VDSL) technology even arrives Vectoring (vector
Change) technology, wherein increment type technology of the Vectoring technology as VDSL2 offsets crosstalk by the superposition of vector matrix.
G.Fast technology is the copper wire access technology risen in recent years, bears the important task for realizing the access of gigabit rate.Mesh
Before, G.Fast technology comes into commercial stage using Vectoring (vector quantization) crosstalk counteracting mode, using the rule offset entirely
Lattice optimize access rate to reach higher performance.In Vectoring (vector quantization) crosstalk counteracting mode all to each route
Crosstalk counteracting operation is carried out, needs to store the crosstalk counteracting coefficient of each route in systems, due on each route
Different subframes use different crosstalk counteracting coefficients, will consume a large amount of memories.And in practical applications, in some time domains,
There is the subframe on some routes not carry data information, but according to above-mentioned Vectoring mode, also according to carrying
The crosstalk counteracting mode of operation of data information handles all routes, and a large amount of power consumptions is caused to consume.
Summary of the invention
The embodiment of the invention provides a kind of implementation method of crosstalk counteracting and local side access devices, for solving existing skill
Power consumption consumes big problem in art.
First aspect present invention provides a kind of implementation method of crosstalk counteracting, is applied to local side access device, above-mentioned office
End access device is connect with several remote access devices, is passed through between above-mentioned local side access device and each remote access device
One connection, this method comprises:
Above-mentioned local side access device obtains the current subframe on each route in time domain conversion tdd frame, each route
Being carried out data transmission with tdd frame, the tdd frame synchronous transfer of all routes, the tdd frame of each route includes M subframe,
Above-mentioned M is positive integer；
Position number of the above-mentioned local side access device according to above-mentioned current subframe in corresponding tdd frame obtains above-mentioned current
The object control information of subframe, above-mentioned object control information are that the first control information, the second control information and third control information
In any one, it is above-mentioned first control information is directed toward the first crosstalk counteracting operation, it is above-mentioned second control information be directed toward second
Kind crosstalk counteracting operation, above-mentioned third control information are directed toward the third crosstalk counteracting and are operated, above-mentioned the first crosstalk counteracting operation,
Second of crosstalk counteracting operation and the operation of the third crosstalk counteracting are different；
Above-mentioned local side access device executes the behaviour of crosstalk counteracting pointed by above-mentioned object control information to above-mentioned current subframe
Make.
As can be seen that local side access device is in the crosstalk counteracting processing for carrying out each route in the embodiment of the present invention, first
The current subframe on the tdd frame in each route is obtained, then according to the position number in the sub- tdd frame of current subframe, is obtained
To corresponding object control information.Since object control information is the first control information, the second control information and third control letter
Any one in breath, the first control information have been directed toward the operation of the first crosstalk counteracting, and the second control information has been directed toward second
Crosstalk counteracting operation, third control information have been directed toward the operation of the third crosstalk counteracting, that is to say, that apply on current subframe
It is some kind in three kinds of crosstalk counteracting operations, is operated to execute targetedly crosstalk counteracting to subframe, simplify crosstalk and support
Disappear operation, to reduce power consumption.
Optionally, in some embodiment of the invention, the current subframe of the tdd frame on route is obtained in local side access device
Before, control information setting is first carried out, carries out control information setting for each of the tdd frame of each route subframe,
Crosstalk counteracting is realized based on subframe dimension.
Further, in some embodiment of the invention, the tdd frame on local side access device setting each route is every
When the control information of one subframe, set-up mode specifically is determined in conjunction with the n-th subframe of all routes, specifically includes following three
Kind of set-up mode: first way, if the n-th subframe of the tdd frame on all routes is sub-frame of uplink or downlink subframe, that
Local side access device is that the first control information is all arranged in the n-th subframe of the tdd frame on each route；The second way,
If the n-th subframe of the tdd frame of at least one route in all routes is idle subframe, and the N of the tdd frame of other routes
A subframe is sub-frame of uplink or downlink subframe, then local side access device is the n-th subframe setting the of the tdd frame of other routes
Two control information, and be that the route setting third that n-th subframe is idle subframe controls information；The third mode, if institute is wired
The n-th subframe of the tdd frame on road is idle subframe, then local side access device is set as the tdd frame on each route
N-th subframe is arranged third and controls information.Wherein, above-mentioned N value be more than or equal to 1, and it is just whole less than or equal to M
Number.As can be seen that in this embodiment, the subframe of the same position is not idle subframe, portion on the TDD in conjunction with all routes
Point be idle subframe and be entirely these three situations of idle subframe, come be arranged route TDD subframe control information, with patch
Practical application scene is closed, crosstalk counteracting is effectively realized.
Optionally, in some embodiment of the invention, position of the local side access device according to current subframe in corresponding tdd frame
Serial number is set, the object control information of current subframe is obtained specifically: local side access device is according to current subframe in corresponding tdd frame
Position number, the object control information of current subframe is obtained from corresponding coefficient selection table, coefficient selection table is corresponding
One route, coefficient select to include M control information in table.As can be seen that in embodiments of the present invention, by route
The control information of the upper all subframes of TDD is sequentially placed in coefficient selection table, and local side access device can be according to subframe on TDD
Position number accordingly rapidly read control information from coefficient selection table.
Optionally, in some embodiment of the invention, table can be selected by packing coefficient in a manner of ping-pong buffer, according to table tennis
The reading manner of caching can rapidly read the control of next subframe after the control information for reading previous subframe
Information.
Optionally, in some embodiment of the invention, above-mentioned the first crosstalk counteracting operation is the first crosstalk counteracting of reading
Coefficient, above-mentioned second of crosstalk counteracting operation is reads the second crosstalk counteracting coefficient, and above-mentioned the third crosstalk counteracting operation is not
With carrying out crosstalk counteracting operation.
Optionally, in some embodiment of the invention, local side access device controls information institute to current subframe performance objective
The crosstalk counteracting operation of direction is also classified into following three kinds of situations: situation one: if object control information is the first control information, local side
Access device reads the first crosstalk counteracting coefficient, carries out crosstalk counteracting operation to current subframe according to the first crosstalk counteracting coefficient；
Situation two: if object control information is the second control information, local side access device reads the second crosstalk counteracting coefficient, according to second
Crosstalk counteracting coefficient carries out crosstalk counteracting operation to current subframe；Situation three: if object control information is third control letter
Breath, local side access device do not have to carry out crosstalk counteracting operation to the current subframe.
Second aspect of the present invention provides a kind of local side access device, the local side access device and several remote access devices
Connection, by a connection between the local side access device and each remote access device, the local side access is set
It is standby to include:
Subframe obtains module, for obtaining the current subframe on each route in time domain conversion tdd frame, each route
Being carried out data transmission with tdd frame, the tdd frame synchronous transfer of all routes, the tdd frame of each route includes M subframe,
The M is positive integer；
Data obtaining module obtains described current for the position number according to the current subframe in corresponding tdd frame
The object control information of subframe, the object control information are that the first control information, the second control information and third control information
In any one, it is described first control information is directed toward the first crosstalk counteracting operation, it is described second control information be directed toward second
Kind crosstalk counteracting operation, the third control information are directed toward the third crosstalk counteracting and are operated, the first crosstalk counteracting operation,
Second of crosstalk counteracting operation and the operation of the third crosstalk counteracting are different；
Crosstalk processing module, for executing the behaviour of crosstalk counteracting pointed by the object control information to the current subframe
Make.
As can be seen that local side access device is in the crosstalk counteracting processing for carrying out each route in the embodiment of the present invention, son
Frame obtains module and first obtains the current subframe on the tdd frame in each route, and then data obtaining module is according to current subframe
Position number in sub- tdd frame gets corresponding object control information.Due to object control information be first control information,
Second control information and third control any one in information, and the first control information has been directed toward the operation of the first crosstalk counteracting,
Second control information has been directed toward second of crosstalk counteracting operation, and third control information has been directed toward the operation of the third crosstalk counteracting,
That is applying on current subframe is some kind in the operation of three kinds of crosstalk counteractings, so that crosstalk processing module can be right
Subframe executes targetedly crosstalk counteracting and operates, and simplifies crosstalk counteracting operation, to reduce power consumption.
Optionally, in some embodiment of the invention, above-mentioned local side access device further include: setup module, for being arranged
The corresponding control information of each subframe in tdd frame on each route.
Optionally, in some embodiment of the invention, above-mentioned setup module is specifically used for, and obtains tdd frame on all routes
N-th subframe, above-mentioned M subframe includes at least one of sub-frame of uplink, downlink subframe and idle subframe, and above-mentioned N is big
In or be equal to 1, and be less than or equal to above-mentioned M positive integer；If the n-th subframe of the tdd frame on all routes is uplink
Frame or downlink subframe, above-mentioned setup module are n-th subframe setting the first control information of the tdd frame on each route；If
The n-th subframe of the tdd frame of at least one route in all routes is idle subframe, removes above-mentioned at least one in all routes
The n-th subframe of the tdd frame of other routes of a route is sub-frame of uplink or downlink subframe, is the tdd frame of above-mentioned other routes
N-th subframe setting second control information, be at least one above-mentioned route tdd frame n-th subframe be arranged third control
Information；It is n-th of the tdd frame on each route if the n-th subframe of the tdd frame of all routes is idle subframe
Frame is arranged above-mentioned third and controls information.
Optionally, in some embodiment of the invention, above- mentioned information obtain module and are specifically used for, according to above-mentioned current subframe
Position number in corresponding tdd frame, obtains the object control information of above-mentioned current subframe from corresponding coefficient selection table, and one
A corresponding route of coefficient selection table, above-mentioned coefficient select to include M control information in table.
Optionally, in some embodiment of the invention, the control information in above-mentioned coefficient selection table is in a manner of ping-pong buffer
It is stored.
Optionally, in some embodiment of the invention, above-mentioned the first crosstalk counteracting operation is the first crosstalk counteracting of reading
Coefficient, above-mentioned second of crosstalk counteracting operation is reads the second crosstalk counteracting coefficient, and above-mentioned the third crosstalk counteracting operation is not
With carrying out crosstalk counteracting operation.
Optionally, in some embodiment of the invention, above-mentioned crosstalk processing module is specifically used for, if above-mentioned target control is believed
Breath is above-mentioned first control information, reads the first crosstalk counteracting coefficient, according to above-mentioned first crosstalk counteracting coefficient to above-mentioned current
Subframe carries out crosstalk counteracting operation；If above-mentioned object control information is above-mentioned second control information, the second crosstalk counteracting system is read
Number carries out crosstalk counteracting operation to above-mentioned current subframe according to above-mentioned second crosstalk counteracting coefficient；If above-mentioned object control information
Information is controlled for above-mentioned third, does not have to carry out crosstalk counteracting operation to above-mentioned current subframe.
Third aspect present invention provides a kind of realization system of crosstalk counteracting, it may include: local side access setting and
Several remote access devices；Wherein, which is the local side access device that above-mentioned second aspect provides.
Fourth aspect present invention provides a kind of local side access device, the local side access device and several remote access devices
Connection, and pass through a connection, the local side access device between local side access device and each remote access device
Including baseband processor and vectorized process device, which connect with above-mentioned several remote access devices, the vector quantization
Processor is for executing the step of first aspect provides.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the schematic diagram of access network architecture provided in an embodiment of the present invention；
Fig. 2 a is the structural schematic diagram of tdd frame provided in an embodiment of the present invention；
Fig. 2 b~2d is the structural schematic diagram of the tdd frame in route provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of CST table provided in an embodiment of the present invention；
Fig. 4 is the flow diagram of the implementation method of crosstalk counteracting provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of local side access device provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of the realization system of crosstalk counteracting provided in an embodiment of the present invention；
Fig. 7 is another structural schematic diagram of local side access device provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the attached drawing of the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a kind of implementation methods of crosstalk counteracting to reduce for realizing the crosstalk counteracting of route
Power consumption improves system performance.The embodiment of the invention also provides a kind of corresponding local side accesses of the implementation method of crosstalk counteracting to set
It is standby.
Referring to Fig. 1, Fig. 1 is the schematic diagram of access network architecture provided in an embodiment of the present invention.It include 1 in Fig. 1
Local side access device and 2 remote access devices, wherein local side access device connect with remote access device by copper wire (when
So, local side access device can be connected with several remote access devices, in Fig. 1 only by taking 2 remote access devices as an example into
Row explanation), to form route between local side access device and remote access device.Local side access device is also connected with regional network
Network realizes network insertion.Remote access device is connected to access node, can be terminal device, such as telephone set, computer.
Copper wire is accessed using G.Fast technology in Fig. 1, since local side access device is connected to several remote access devices, office
End access device corresponds to a plurality of route, thus there is crosstalks for meeting when transmitting data, between a plurality of route, this just needs office
Access device is held to carry out crosstalk counteracting operation to each route.And the Vectoring (vector quantization) that G.Fast technology introduces eliminates string
The usual way for disturbing mode is using full counteracting mode, and so-called full counteracting mode, which refers to, all goes here and there all subframes on route
Counteracting processing is disturbed, and different subframes use different counteracting coefficients on same route, this will lead to a large amount of power consumption consumption.This
The implementation method for the crosstalk counteracting that inventive embodiments provide can be realized targetedly crosstalk counteracting operation, reduce power consumption consumption.
Before the implementation method for introducing crosstalk counteracting provided in an embodiment of the present invention, first simply introduce defined in G.Fast standard
Several word concepts, comprising: time domain converts (Time-Division Duplexing, abbreviation TDD) frame, continuous operation area
(Normal Operation Interval, abbreviation NOI) and discontinuous operation area (Discontinuous Operation
Interval, abbreviation DOI).
Fig. 2 a is please referred to, Fig. 2 a is the structural schematic diagram of tdd frame provided in an embodiment of the present invention.As shown in Figure 2 a, exist
Maximum has 36 symbol (symbol) in a tdd frame defined in G.Fast standard (in Fig. 2 a by taking 36 symbol as an example).
Wherein, an a symbol namely subframe, subsequent collectively referred to as subframe.Also defined in 36 subframes sub-frame of uplink,
The data of downlink subframe and idle subframe, uplink (Uplink) are transmitted on sub-frame of uplink, downlink (Downlink)
Data transmitted on downlink subframe, any data will not be transmitted in idle subframe, and different uplink and downlinks is supported in tdd frame
Time proportion can adjust uplink and downlink time proportion, according to different types of service to meet the asymmetrical business need of uplink and downlink
It asks, for example, the always downlink subframe that subframe 0~24 is transmitted, 25~26 be idle subframe (always not transmitting data), and 27~35 pass
Defeated always sub-frame of uplink.
Based on the above-mentioned definition to tdd frame, then in multiple routes corresponding to a local side access device, it can be right
Tdd frame in each route carries out the proportion setting of uplink and downlink time and the setting of idle subframe of adaptability, that is to say, that each
Sub-frame of uplink, downlink subframe and the proportion of idle subframe three can be identical in the tdd frame of a route, can also completely not
It is identical or partially not identical.It can not have to consider the configuration of uplink and downlink time in embodiments of the present invention, ascending-descending subframes are seen
Make an entirety, only considers that transmission has the ascending-descending subframes of data and the idle subframe without transmission data.Assuming that being connect with local side
For entering corresponding 4 routes of equipment, Fig. 2 b~2d is please referred to, Fig. 2 b~2d is the TDD in route provided in an embodiment of the present invention
The structural schematic diagram of frame.In figure 2b, the tdd frame structure of 4 routes is identical, wherein preceding 8 (0~7) son in 36 subframes
Frame is used for transmission data (not having to consider which is sub-frame of uplink in 8 subframes herein, which is downlink subframe), remaining subframe is
Idle subframe.In figure 2 c, preceding 4 (0~3) subframes of the 1st article of route are used for transmission data, remaining subframe is idle subframe.
Preceding 8 (0~7) subframes of 2nd, 3 and 4 article of route are used for transmission data, remaining subframe is idle subframe.In figure 2d, the 1st article
Preceding 4 subframes and the 34th subframe of route are used for transmission data, and other subframes are idle subframe.In 2nd, 3 and 4 article of route,
Preceding 5 subframes, the 7th, the 8th, the 11st, the 13rd subframe be used for transmission data, remaining subframe is idle subframe.
After having carried out ascending-descending subframes and idle sub-frame configuration to the tdd frame in each route, which will be based on
Format with the tdd frame postponed transmits data, until reconfigure to tdd frame next time.To transmit a tdd frame
Time, the period of each line transmission tdd frame was identical as a cycle, and the tdd frame on each route is in time domain
It is upper perfectly aligned, for example, in the same time domain, on each route it is corresponding be all same position serial number subframe.
It is to be appreciated that each route all can carry out tdd frame transmission with its period, at this point, the ascending-descending subframes in tdd frame
In may actually carry data, it is also possible to do not carry data, if be configured to transmission data ascending-descending subframes do not have
When carrying data, it is believed that the subframe is zero load.
Further, in conjunction with the configuration on each route to ascending-descending subframes in TDD and idle subframe, or with Fig. 2 b
For Fig. 2 d, in figure 2b, preceding 8 subframes of 4 routes are configured to the subframe of transmission data, therefore, by each
Preceding 8 subframes this length areas in route sees NOI as.In figure 2 c, preceding 6 subframes in 4 routes are all configured
For the subframe for transmitting data, therefore, preceding 6 subframes this length areas on each route is seen as NOI, and due to the
The 7th of 1 article of route and the 8th subframe do not transmit data, but the 7th in the route of the 2nd, 3 and 4 and the 8th subframe pass
Therefore transmission of data sees the 7th in 4 articles of routes and two subframe lengths of the 8th subframe as DOI.In figure 2d, 4 routes
Preceding 4 subframes all transmit and have data, therefore, see this length areas of preceding 4 subframes in 4 routes as NOI, and
Due to the 5th in the 1st article of route until in the 12nd subframe all without transmission data, by the 5th in 4 articles of routes~
12 subframe this length see DOI as, and the 13rd subframe in 4 articles of routes, which is all transmitted, data, therefore, will be in 4 routes
The 13rd subframe regard NOI as.Generally speaking, number of subframes included in tdd frame in all the lines is identical, and institute
Have when the tdd frame synchronous transfer in route that (as above-mentioned introduction is that transmission is same in the same time domain, in each route
The subframe of one position number), NOI refers to that the corresponding subframe of the same position number of the tdd frame of all routes is transmission
The subframe of data, such as sub-frame of uplink or downlink subframe, DOI refer to the son of the TDD in all routes on an at least route
Frame is idle subframe.
According to the G.Fast NOI defined and DOI, it is recognised that in the application scenarios of NOI, due to sub on all routes
Frame is sub-frame of uplink or downlink subframe, can be used in transmitting data, therefore, it is necessary to carry out crosstalk counteracting respectively to all routes
Operation, the crosstalk counteracting coefficient for realizing crosstalk counteracting operation is identical, the crosstalk counteracting coefficient of referred to as NOI.In answering for DOI
With in scene, due to there is subframe on some routes not to be used for transmission data, for subframe of leaving unused, then, the line for money subframe of leaving unused
Road can then not have to carry out crosstalk counteracting operation, simultaneously because need the number of, lines for carrying out crosstalk counteracting operation that can also reduce,
Its crosstalk counteracting coefficient for being used for crosstalk counteracting operation should be different from the crosstalk counteracting coefficient in NOI, the referred to as crosstalk of DOI
Offset coefficient.If the subframe in all routes on the same position number is all idle subframe (rear 28 subframe in Fig. 2 b),
It can not have to carry out crosstalk counteracting operation.Therefore, in embodiments of the present invention, corresponding NOI application scenarios, define the string of NOI
Counteracting coefficient is disturbed, corresponding DOI application scenarios define the crosstalk counteracting coefficient of DOI, the same position in corresponding all routes
When subframe in serial number is idle subframe, determines and do not have to carry out crosstalk counteracting operation.
Wherein, since routes all in NOI are all the crosstalk counteracting coefficients for using NOI, subframe is used for transmission data in DOI
Route be all crosstalk counteracting coefficient using DOI, and other subframes be the route of idle subframe without progress crosstalk counteracting
Operation, therefore, only need to store in embodiments of the present invention NOI crosstalk counteracting coefficient and DOI crosstalk counteracting coefficient this two
A coefficient.
Can be seen that crosstalk counteracting operation only from above-mentioned introduction need to consider to the ascending-descending subframes and idle son in tdd frame
The configuration of frame, and do not have to consider whether carry data in subframe in actual transmissions.It therefore, in embodiments of the present invention can be pre-
The format for first combining the tdd frame in all routes, determines the crosstalk counteracting of each subframe in the tdd frame for each route
Coefficient.As shown in figure 3, the coefficient that a depth is 36 degree, which is arranged, for a tdd frame selects table (Coefficient select
Table, abbreviation CST) table, include 36 CST list items in CST table, includes control information in each CST list item, wherein control
Information indicates specific crosstalk counteracting operation.These three situations are handled for NOI, DOI and without carrying out crosstalk counteracting, are arranged
Three kinds of crosstalk counteracting operations, the respectively operation of the first crosstalk counteracting, second of crosstalk counteracting operates and the third harasses counteracting
Control information is equally also divided into three kinds, the first control information, the second control information and third control information, the first control by operation
Information processed is directed toward the operation of the first crosstalk counteracting, and the second control information is directed toward second of crosstalk counteracting operation, and third controls information
It is directed toward the third and harasses counteracting operation.Further, the first crosstalk counteracting operation refers to the crosstalk counteracting coefficient for reading NOI,
Second of crosstalk counteracting operation refers to the crosstalk counteracting coefficient for reading DOI, the third is harassed counteracting operation and refers to without being gone here and there
Disturb counteracting processing.
In embodiments of the present invention be arranged two buffer zones, be respectively defined as buffer zone A (ping_bufffer) and
Buffer zone B (pong_buffer), wherein buffer zone A is used to store the crosstalk counteracting coefficient of NOI, and buffer zone B is used for
Store the crosstalk counteracting coefficient of DOI.
Further, for two kinds of situations of NOI and DOI, can be arranged in CST list item some bits for store control
Information devises 2bit incorporated by reference to Fig. 3, such as in each CST list item, wherein the value of 2bit is if [0,0], then it represents that
The operation of the first crosstalk counteracting, is the crosstalk counteracting coefficient for reading NOI, if [0.1], then it represents that second of crosstalk counteracting behaviour
Make, be the crosstalk counteracting coefficient for reading DOI, if [1,1], then it represents that the operation of the third crosstalk counteracting does not have to carry out crosstalk
Counteracting processing.
In order to realize the corresponding two kinds of crosstalk processing operations of NOI and DOI, can be stored by way of ping-pong buffer each
The corresponding CST table of a TDD.
In conjunction with above-mentioned introduction, the implementation method of crosstalk counteracting provided in an embodiment of the present invention, as shown in figure 4, can include:
401, local side access device obtains the current subframe on each route in time domain conversion tdd frame, each route
Being carried out data transmission with tdd frame, the tdd frame synchronous transfer of all routes, the tdd frame of each route includes M subframe,
The M is positive integer；
402, position number of the local side access device according to the current subframe in corresponding tdd frame, described in acquisition
The object control information of current subframe, the object control information are the first control information, the second control information and third control
Any one in information, the first control information are directed toward the operation of the first crosstalk counteracting, and the second control information is directed toward
Second of crosstalk counteracting operation, the third control information are directed toward the operation of the third crosstalk counteracting, the first described crosstalk counteracting
Operation, second of crosstalk counteracting operation and the operation of the third crosstalk counteracting are different；
403, the local side access device executes crosstalk pointed by the object control information to the current subframe and supports
Disappear operation.
It is appreciated that local side access device when carrying out crosstalk counteracting processing, is that all routes are carried out with simultaneously column processing.By
It has been set in the control information of each subframe, therefore, local side access device is determined by the frame head of detection tdd frame
It is currently a new tdd frame, then detects the frame head of a subframe, determines that this subframe is the 1st frame of tdd frame,
By a register count, the value of register is set as 1, first goes the 1st subframe of reading in the corresponding CST table of tdd frame corresponding
Control information then go to read corresponding crosstalk counteracting coefficient if the first control information or the second control information, it is then sharp
Crosstalk counteracting processing is carried out to current subframe with crosstalk counteracting coefficient.
It is illustrated in conjunction with above-mentioned Fig. 2 b, for the 1st subframe of the TDD on route 1, it should be supported using the crosstalk of NOI
Disappear coefficient, therefore, the crosstalk counteracting coefficient of NOI is read from the A of buffer zone, then carries out crosstalk counteracting processing.Wherein, it carries out
Crosstalk counteracting processing is divided into two kinds of situations: if available for transmission data, obtaining the 1st corresponding data to be transmitted of subframe, then will
The crosstalk counteracting coefficient of data to be transmitted and NOI carry out matrix multiple, the data after obtaining crosstalk counteracting, then by crosstalk counteracting
Data afterwards are mapped in the 1st subframe and are transmitted；It obtains by the 1st received data of subframe, then by received number
Matrix multiple is carried out according to the crosstalk counteracting coefficient of NOI, the former data after the crosstalk that is eliminated.
Referring to Fig. 5, Fig. 5 is the structural schematic diagram of local side access device provided in an embodiment of the present invention；As shown in figure 5,
And Fig. 1 is combined, which connect with several remote access devices, and local side access device distally connects with each
Enter between equipment through a connection, a kind of local side access device 500 can include:
Subframe obtains module 510, for obtaining the current subframe on each route in time domain conversion tdd frame, each
Route is carried out data transmission with tdd frame, the tdd frame synchronous transfer of all routes, and the tdd frame of each route includes M
Subframe, the M are positive integer；
Data obtaining module 520, for the position number according to the current subframe in corresponding tdd frame, described in acquisition
The object control information of current subframe, the object control information are the first control information, the second control information and third control
Any one in information, the first control information are directed toward the operation of the first crosstalk counteracting, and the second control information is directed toward
Second of crosstalk counteracting operation, the third control information are directed toward the operation of the third crosstalk counteracting, the first described crosstalk counteracting
Operation, second of crosstalk counteracting operation and the operation of the third crosstalk counteracting are different；
Crosstalk processing module 530 is supported for executing crosstalk pointed by the object control information to the current subframe
Disappear operation.
As can be seen that local side access device is in the crosstalk counteracting processing for carrying out each route in the embodiment of the present invention, son
Frame obtains module 510 and first obtains the current subframe on the tdd frame in each route, and then data obtaining module 520 is according to working as
Position number in the preceding sub- tdd frame of subframe, gets corresponding object control information.Since object control information is the first control
Information, the second control information and third control any one in information, and the first control information has been directed toward the first crosstalk counteracting
Operation, the second control information have been directed toward second of crosstalk counteracting operation, and third control information has been directed toward the third crosstalk counteracting behaviour
Make, that is to say, that applying on current subframe is some kind in the operation of three kinds of crosstalk counteractings, thus crosstalk processing module
530 can execute targetedly crosstalk counteracting to subframe operates, and simplifies crosstalk counteracting operation, to reduce power consumption.
In some embodiment of the invention, local side access device 500 further includes setup module 540, wherein setup module,
For the corresponding control information of each subframe in tdd frame to be arranged on each route.
Optionally, in some embodiment of the invention, setup module 540 is specifically used for, and obtains tdd frame on all routes
N-th subframe, the M subframe include at least one of sub-frame of uplink, downlink subframe and idle subframe, the N be greater than
Or it is equal to 1, and be less than or equal to the positive integer of the M；If the n-th subframe of the tdd frame on all routes is sub-frame of uplink
Or downlink subframe, the setup module 540 are n-th subframe setting the first control information of the tdd frame on each route；If
The n-th subframe of the tdd frame of at least one route in all routes is idle subframe, removes described at least one in all routes
The n-th subframe of the tdd frame of other routes of a route is sub-frame of uplink or downlink subframe, is the tdd frame of other routes
N-th subframe setting the second control information, third be set control for the n-th subframe of the tdd frame of at least one route
Information；It is n-th of the tdd frame on each route if the n-th subframe of the tdd frame of all routes is idle subframe
Frame is arranged the third and controls information.
Optionally, in some embodiment of the invention, above- mentioned information obtain module 520 and are specifically used for, according to described current
Position number of the subframe in corresponding tdd frame obtains the target control letter of the current subframe from corresponding coefficient selection table
Breath, a corresponding route of coefficient selection table, the coefficient select to include M control information in table.
Optionally, in some embodiment of the invention, above-mentioned crosstalk processing module 530 is specifically used for, if the target control
Information processed is the first control information, the first crosstalk counteracting coefficient is read, according to the first crosstalk counteracting coefficient to described
Current subframe carries out crosstalk counteracting operation；If the object control information is the second control information, reads the second crosstalk and support
Disappear coefficient, carries out crosstalk counteracting operation to the current subframe according to the second crosstalk counteracting coefficient；If the target control
Information is that the third controls information, does not have to carry out crosstalk counteracting operation to the current subframe.
Optionally, the control information of coefficient selection table provided in an embodiment of the present invention is stored in a manner of ping-pong buffer.
Optionally, the first crosstalk counteracting operation provided in an embodiment of the present invention is the first crosstalk counteracting coefficient of reading, the
Two kinds of crosstalk counteracting operations is read the second crosstalk counteracting coefficient, and the operation of the third crosstalk counteracting is without carrying out crosstalk counteracting behaviour
Make.
Referring to Fig. 6, Fig. 6 is the structural schematic diagram of the realization system of crosstalk counteracting provided in an embodiment of the present invention；Such as Fig. 6
It is shown, a kind of realization system 600 of crosstalk counteracting can include:
Local side access device 500 shown in fig. 5 and at least one remote access device 610.
Wherein, for local side access device 500, the introduction of embodiment of the method and Fig. 5 embodiment is please referred to, it is no longer superfluous herein
It states.
Referring to FIG. 7, Fig. 7 is another structural schematic diagram of local side access device provided in an embodiment of the present invention, wherein office
Hold access device 700, it may include at least one baseband processor 701, at least one vectorized process device 702, at least one net
Network interface or other communication interfaces, memory 703 and at least one communication bus, for realizing the company between these devices
Connect letter.The baseband processor 701 is used to execute some executable modules stored in memory, such as computer program,
The vectorized process device 702 is used to execute other the executable modules stored in memory.The memory 703 may packet
Containing high-speed random access memory (RAM, Random Access Memory), it is also possible to further include non-labile memory
(non-volatile memory), for example, at least a magnetic disk storage.It (can be wired by least one network interface
Or wireless) realize communication connection between the system gateway and at least one other network element, internet, wide area can be used
Net, local network, Metropolitan Area Network (MAN) etc..
As shown in fig. 7, in some embodiments, program instruction is stored in above-mentioned memory 703, program instruction can be with
It is executed by baseband processor 701 or vectorized process device 702, wherein above-mentioned vectorized process device 702 specifically executes following step
It is rapid: the current subframe on each route in time domain conversion tdd frame is obtained, each route is carried out data transmission with tdd frame,
The tdd frame synchronous transfer of all routes, the tdd frame of each route include M subframe, and above-mentioned M is positive integer；According to above-mentioned
Position number of the current subframe in corresponding tdd frame obtains the object control information of above-mentioned current subframe, above-mentioned target control letter
Breath controls any one in information for the first control information, the second control information and third, and above-mentioned first control information is directed toward
The operation of the first crosstalk counteracting, above-mentioned second control information are directed toward second of crosstalk counteracting operation, and above-mentioned third control information refers to
It is operated to the third crosstalk counteracting, above-mentioned the first crosstalk counteracting operation, second of crosstalk counteracting operation and the third crosstalk are supported
Disappearing, it is different to operate；The operation of crosstalk counteracting pointed by above-mentioned object control information is executed to above-mentioned current subframe.
In some embodiments, following steps can also be performed in above-mentioned vectorized process device 702: setting each route
The corresponding control information of each subframe in upper tdd frame.
In some embodiments, following steps can also be performed in above-mentioned vectorized process device 702: obtaining on all routes
The n-th subframe of tdd frame, above-mentioned M subframe include at least one of sub-frame of uplink, downlink subframe and idle subframe, above-mentioned N
For the positive integer more than or equal to 1, and less than or equal to above-mentioned M；On if the n-th subframe of the tdd frame on all routes is
Row subframe or downlink subframe are n-th subframe setting the first control information of the tdd frame on each route；If all routes
In the n-th subframe of tdd frame of at least one route be idle subframe, remove at least one above-mentioned route in all routes
The n-th subframe of the tdd frame of other routes is sub-frame of uplink or downlink subframe, is n-th of the tdd frame of above-mentioned other routes
Frame setting the second control information is that third control information is arranged in the n-th subframe of the tdd frame of at least one above-mentioned route；If institute
The n-th subframe for having the tdd frame of route is idle subframe, is that the n-th subframe setting of the tdd frame on each route is above-mentioned
Third controls information.
In some embodiments, following steps can also be performed in above-mentioned vectorized process device 702: according to above-mentioned current son
Position number of the frame in corresponding tdd frame, obtains the object control information of above-mentioned current subframe from corresponding coefficient selection table,
One corresponding route of coefficient selection table, above-mentioned coefficient select to include M control information in table.
In some embodiments, following steps can also be performed in above-mentioned vectorized process device 702: in a manner of ping-pong buffer
Packing coefficient selects table.
Optionally, in some embodiments, above-mentioned the first crosstalk counteracting operation is the first crosstalk counteracting coefficient of reading,
Above-mentioned second of crosstalk counteracting operation is reads the second crosstalk counteracting coefficient, and above-mentioned the third crosstalk counteracting operation is without carrying out
Crosstalk counteracting operation.
In some embodiments, following steps can also be performed in above-mentioned vectorized process device 702: if above-mentioned target control
Information is above-mentioned first control information, reads the first crosstalk counteracting coefficient, is worked as according to above-mentioned first crosstalk counteracting coefficient to above-mentioned
Preceding subframe carries out crosstalk counteracting operation；If above-mentioned object control information is above-mentioned second control information, the second crosstalk counteracting is read
Coefficient carries out crosstalk counteracting operation to above-mentioned current subframe according to above-mentioned second crosstalk counteracting coefficient；If above-mentioned target control letter
Breath is that above-mentioned third controls information, does not have to carry out crosstalk counteracting operation to above-mentioned current subframe.
In the above-described embodiments, it all emphasizes particularly on different fields to the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be through some interfaces, the indirect coupling of device or unit
It closes or communicates to connect, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list
Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. are various can store journey
The medium of sequence code.
Detailed Jie has been carried out to the implementation method and local side access device of a kind of crosstalk counteracting provided by the present invention above
It continues, for those of ordinary skill in the art, thought according to an embodiment of the present invention, in specific embodiments and applications
There will be changes, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (13)
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| CN108024350B (en) * | 2016-10-28 | 2021-10-19 | 中兴通讯股份有限公司 | Dynamic time allocation method and device |
| CN108259276B (en) * | 2016-12-28 | 2021-12-14 | 中兴通讯股份有限公司 | Method and device for controlling ultra-wideband copper wire access technology G.FAST port |
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| CN103636230A (en) * | 2012-05-31 | 2014-03-12 | 华为技术有限公司 | DSL activation method, device, system and program product |
| CN103828250A (en) * | 2011-07-25 | 2014-05-28 | 瑞典爱立信有限公司 | Method for saving power in a telecommunications system |
| KR101464701B1 (en) * | 2008-08-14 | 2014-11-25 | 삼성전자주식회사 | Apparatus and method for frame offset construction and transmission to reduce co-channel interference in mobile communication system |
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| KR101464701B1 (en) * | 2008-08-14 | 2014-11-25 | 삼성전자주식회사 | Apparatus and method for frame offset construction and transmission to reduce co-channel interference in mobile communication system |
| CN102301612A (en) * | 2009-01-30 | 2011-12-28 | 兰蒂克德国有限责任公司 | Crosstalk coefficient updating in vector transmission |
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