CN103095337B - Improve and eliminate stability of crosstalk method, device and local side - Google Patents

Improve and eliminate stability of crosstalk method, device and local side Download PDF

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Publication number
CN103095337B
CN103095337B CN201110335132.6A CN201110335132A CN103095337B CN 103095337 B CN103095337 B CN 103095337B CN 201110335132 A CN201110335132 A CN 201110335132A CN 103095337 B CN103095337 B CN 103095337B
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described
crosstalk
local side
user end
user
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CN201110335132.6A
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Chinese (zh)
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CN103095337A (en
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李际涛
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中兴通讯股份有限公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B3/00Line transmission systems
    • H04B3/02Details
    • H04B3/32Reducing cross-talk, e.g. by compensating

Abstract

The present invention provides a kind of raising to eliminate stability of crosstalk method, device and local side, is used for improving XDSL transmitting procedure and eliminates stability of crosstalk.This raising eliminates stability of crosstalk method and includes: local side interacts with belonging to the multiple user sides eliminated in crosstalk group and obtains port information;Local side determines first user end according to port information from multiple user sides;And local side performs the first operation, to reduce the impact eliminating crosstalk to first user end.Use the technical scheme that the present invention provides, can eliminate, with intelligent processing method, the abnormal conditions occurred in interfering process, improve and eliminate stability of crosstalk.

Description

Improve and eliminate stability of crosstalk method, device and local side

Technical field

The invention belongs to the communications field, relate to the transmission technology of a kind of xDSL, more specifically, relate to a kind of raising and eliminate stability of crosstalk method, device and local side.

Background technology

In xDSL applies, it is in the line pair in same elementary cell (binder), crosstalk can be produced each other.Crosstalk is the key factor affecting transmission performance.VECTORING technology can offset crosstalk, makes the speed of each circuit close to the level without crosstalk.The enforcement of VECTORING requires: CO (local side) can determine that the mutual cross-talk models between each circuit, focus on all track datas, at descending (from CO to CPE (user side)), the data sent are pre-compensated for, offset at up (CPE to CO).

Cross-talk models is the basis that VECTORING normally works accurately.Down direction, CO can send signal specific sequence at each circuit, and CPE can monitor All other routes noise on this circuit, and test result is sent back to CO;Up direction, CPE sends signal specific sequence on respective circuit, and CO can monitor the noise received on All other routes;CO, according to above-mentioned information, calculates the cross-talk models between circuit.

If there being a CPE can not support VECTORING function in a VECTORINGgroup, or can not correctly support VECTORING function, such as, CPE beams back the noise data mistake of CO, CO cannot correctly judge cross-talk models, this can affect VECTORING effect, even results in VECTORING failure.Considering another kind of situation, if in a Binder, part circuit belongs to the VECTORINGgroup of a DSLAM, and part circuit belongs to another DSLAM.The crosstalk to the circuit in VECTORINGgroup of the circuit of another DSLAM is a kind of external noise, and this noise can affect VECTORINGgroup and calculate the precision of cross-talk models, and then affect the effect of VECTORING.In the case of external noise is relatively strong, such as more than the noise margin of VECTORINGgroup, such as 6dB, will cause and go offline.

Same problem is there is for other eliminate crosstalk method.

Therefore, prior art eliminates the problem that crosstalk existence and stability is not enough, and for this problem, the most not yet proposes good solution.

Summary of the invention

The present invention provides a kind of raising to eliminate stability of crosstalk method, device and local side, for solving to eliminate in prior art the problem that crosstalk existence and stability is not enough.

For realizing the purpose of the present invention, according to an aspect of the present invention, it is provided that a kind of raising eliminates stability of crosstalk method, and have employed techniques below scheme: local side interacts with belonging to the multiple user sides eliminated in crosstalk group and obtains port information;Local side determines first user end according to port information from multiple user sides;And local side performs the first operation, to reduce the impact eliminating crosstalk to first user end.

Further, first user end includes: do not support to eliminate the user side of crosstalk group;And/or it is defined as, according to the cross-talk models of actual track and elimination crosstalk group, the user side that port is abnormal.

Further, the first operation includes: local side obtains the business demand of first user end;Local side determines the lowest bandwidth requirement of first user end according to business demand;And local side requires to configure suitable frequency range for first user end according to lowest-bandwidth.

Further, the first operation also includes: local side obtains the cross-talk models of first user end;Local side calculates the first user end largest tolerable noise to eliminating crosstalk according to cross-talk models;Local side is that first user end configures suitable PSD according to largest tolerable noise.

Further, the first operation includes: local side closes first user end, and sends warning message to first user end.

Further, first user end includes: the normal user side supporting to eliminate crosstalk group.

Further, the first operation includes: local side adjusts the normal configuration supporting to eliminate the user side of crosstalk group.

According to another aspect of the present invention, it is provided that a kind of raising eliminates stability of crosstalk device, and by the following technical solutions:

Improve elimination stability of crosstalk device to include: acquisition module, interact for local side with belonging to the multiple user sides eliminated in crosstalk group and obtain port information;Determine module, from multiple user sides, determine first user end for local side according to port information;And execution module, for local side, first user end is performed the first operation, to reduce the impact eliminating crosstalk.

According to a further aspect of the invention, it is provided that a kind of local side, and by the following technical solutions:

Local side includes that above-mentioned raising eliminates stability of crosstalk device.

More than can be seen that, the present invention carries out port information collection by local side to belonging to a client eliminating crosstalk group, thus analyze port and extremely and do not support the client of this elimination crosstalk, take these clients close or reconfigure frequency range or PSD, reach and improve the purpose eliminating stability of crosstalk, can also use normally using and supporting that the client of this elimination crosstalk carries out establishing again and puts, to arrive the purpose improving elimination stability of crosstalk.

In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.Below with reference to figure, the present invention is further detailed explanation.

Accompanying drawing explanation

Accompanying drawing is used for providing a further understanding of the present invention, constitutes the part of the application, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is the broad flow diagram improving elimination stability of crosstalk method described in the embodiment of the present invention;

Fig. 2 is the concrete schematic diagram improving elimination stability of crosstalk method described in the embodiment of the present invention;And

Fig. 3 is the primary structure schematic diagram improving elimination stability of crosstalk device described in the embodiment of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.

Fig. 1 is the broad flow diagram improving elimination stability of crosstalk method described in the embodiment of the present invention.

Shown in Figure 1, the method improving elimination stability of crosstalk includes:

S101: local side interacts with belonging to the multiple user sides eliminated in crosstalk group and obtains port information;

S103: local side determines first user end according to port information from multiple user sides;And

S105: local side performs the first operation to first user end, to reduce the impact eliminating crosstalk.

By the technique scheme of the present embodiment, in handshake phase, local side CO and client CPE are according to G.994.1 interactive information, and obtain the CPE port information belonging to an elimination crosstalk group, thus make a concrete analysis of the port information of each CPE, according to the analysis to port information, make the concrete operations to corresponding CPE, thus reach to improve the purpose eliminating stability of crosstalk.

Preferably, the elimination crosstalk in above-described embodiment uses VECTORING technology, and local side CO gathers VECTORING group middle port information, determines port or the parafunctional port of VECTORING not supporting VECTORING.

Preferably, the port information gathered by local side CO, this port information specifically comprises the steps that

Determine the port belonging to unified Binder, and these ports may be on same DSLAM;Determine all ports belonging to same VECTORINGgroup;Determining the port not supporting VECTORING, this generic port comprises the steps that does not supports VECTORING, or VECTORING dysfunction, as this port returns data exception or abnormal to All other routes crosstalk.

Determine the business game of above-mentioned port, as obtained from OSS, if need guarantee business to use, low guaranteed bandwidth etc..

Obtain the general cross-talk models of similar Binder;

Above-mentioned port information can obtain from operational system, but the port information gathered is not limited to foregoing.

By to the analysis of above-mentioned port information and conclusion, can being two types by the Type division of first user end: do not support port or the parafunctional port of VECTORING of VECTORING.

By the technique scheme of the present embodiment, CO gathers the relevant information of CPE by management, data channel, and this information is used for judging whether this CPE supports VECTORING function, or determines port VECTORING dysfunction according to cross-talk models and actual track situation.Thus take concrete operation measure for both port types.

Preferably, the CPE to the port of above two type, CO can use the business demand obtaining this CPE further, such as general business of networking, VOIP business etc.;So that CO determines the lowest bandwidth requirement of this CPE according to business demand;And CO requires to configure suitable frequency range for this CPE according to this lowest-bandwidth.

By the technique scheme of the present embodiment, it is determined by the business demand of the CPE of above two type, so that it is determined that this CPE needs the lowest-bandwidth maintained, new frequency range is specifically set according to this band this CPE a width of, thus eliminates the impact that this CPE is brought by VECTORING.

Preferably, the CPE to the port of above two type, CO can also be by obtaining the cross-talk models of this CPE;This CPE largest tolerable noise to eliminating crosstalk is calculated according to this cross-talk models;CO is that this CPE configures suitable PSD according to largest tolerable noise.

By the technique scheme of the present embodiment, CO according to the cross-talk models of this CPE, judges frequency range that this CPE uses and abnormal CPE or the cross talk effects not supporting the CPE of VECTORING to be likely to result in by worst case.According to this information, for abnormal CPE or do not support that the CPE of VECTORING selects available frequency range and PSD, by abnormal CPE or do not support that the impact of All other routes is reduced in acceptable scope by the CPE of VECTORING.

Preferably, the CPE to the port of above two type, CO can also be further turned off this CPE, and notice or alert.

According to the technique scheme of the present embodiment, CO can close abnormal CPE or not support the CPE, the CPE of VECTORING stability of thoroughly eliminating the effects of the act of VECTORING.

Preferably, first user end can also include: the normal CPE supporting to eliminate crosstalk group.

By the technique scheme of the present embodiment, confirm out by belonging to the normal CPE supporting to eliminate crosstalk group in a VECTORING group, thus normally support that for this CPE eliminating crosstalk group takes corresponding measure, make abnormal CPE or the noise not supporting the CPE of VECTORING to cause, do not interfere with the normal CPE supporting to eliminate crosstalk group.

Preferably, for the normal CPE supporting to eliminate crosstalk group, CO can use and adjust the normal configuration supporting to eliminate the CPE of crosstalk group, reach to improve the purpose of VECTORING stability, such as, snrmargin by normal CPE supporting elimination crosstalk group of function adjustment such as heavily joining so that abnormal CPE or the noise not supporting the CPE of VECTORING to cause, does not interferes with the stable operation normally supporting to eliminate the CPE of crosstalk group.

Fig. 2 is the concrete schematic diagram improving elimination stability of crosstalk method described in the embodiment of the present invention.

Shown in Figure 2, a DSLAM has 3 CPE, and these 3 CPE are in same " binder " simultaneously.Wherein, CPE1 Yu CPE2 supports that VECTORING, CPE3 do not support VECTORING.

According to above-mentioned scene, the operating procedure that can use is:

Step one: CO can belong to same elementary cell according to the cable of 3 CPE of validation of information of operational system;CO 3 users of configuration belong to a VECTORINGgroup.

In handshake phase, CO and CPE is according to G.994.1 interactive information, and CO judges that CPE3 does not support VECTORING.

Above-mentioned information is sent to system control module.

Step 2: CO configures suitable frequency range, PSD etc. to CPE3, while maintaining bottom line service, reduces the impact on CPE1 Yu CPE2.Or directly close CPE3, and alert.CO can also adjust the configuration of CPE1 Yu CPE2 simultaneously, and reduction influences each other.

The foundation of the above-mentioned PSD of determination may is that

Obtain the business that this CPE3 needs to maintain, such as general business of networking, VOIP business etc. from operational system, determine lowest-bandwidth requirement according to business demand.

The cross-talk models of the elementary cell similar with this binder is obtained from operational system.The CPE3 largest tolerable noise to CPE1 Yu CPE2 is speculated with this.

Information according to operational system: if CPE3 can close, the most simply close.And proactive notification user changes CPE.If CPE3 uses VOIP business, it is necessary to maintain 256Kbps lowest-bandwidth.Check the information such as the frequency range that CPE1 Yu CPE2 uses, PSD, SNRmargin, background noise.Can be according to the cross-talk models of similar elementary cell, the use frequency range at CPE1 Yu CPE2 is judged by worst case, control the transmitting power of CPE3 so that make an uproar in the crosstalk noise intensity that CPE3 the is likely to result in end less than CPE1 with CPE2, or the crosstalk much smaller than CPE1 Yu CPE2.Such as, as follows to this elementary cell cross-talk data: at 3MHz frequency, FEXTloss minima is 45dB;At 5MHz frequency, FEXTloss minima is 40dB;At 10MHz frequency, FEXTloss minima is 37dB;At 15MHz frequency, FEXTloss minima is 35dB.Assuming that the end of CPE1 Yu CPE2 make an uproar as-110dB.Make an uproar in the end for making the crosstalk of CPE3 be less than CPE1 with CPE2, make the transmitting power of each frequency range should be configured that-110dB adds the FEXTloss that each frequency band is corresponding at the PSD of each frequency range.It is not only to control the CPE3 interference to other users, it is also possible to adjust the configuration of CPE1 Yu CPE2, the interference that tolerance CPE3 may bring.Such as, pre-set the service band of CPE3 and launch PSD.As such, it is possible to according to the cross-talk models of this elementary cell, infer the CPE3 crosstalk noise to CPE1 Yu CPE2.CPE1 with CPE2 arranges corresponding virtual noise in the frequency range being disturbed in advance, or arranges SRA, during to keep CPE3 to access, does not affect the stable operation of CPE1 Yu CPE2.

It is not only to control the CPE3 interference to other users, it is also possible to adjust the configuration of user CPE2, CPE1, such as by the snrmargin of function adjustment CPE2, CPE1 such as heavily joining online so that CPE3 causes noise, does not interferes with the stable operation of user CPE2, CPE1.

Fig. 3 is the primary structure schematic diagram improving elimination stability of crosstalk device described in the embodiment of the present invention.

Shown in Figure 3, the device improving elimination stability of crosstalk includes:

Acquisition module 30, interacts for local side with belonging to the multiple user sides eliminated in crosstalk group and obtains port information;

Determine module 32, from multiple user sides, determine first user end for local side according to port information;And

Perform module 34, for local side, first user end is performed the first operation, to reduce the impact eliminating crosstalk.

According to a further aspect of the invention, it is provided that a kind of local side, and by the following technical solutions:

Local side includes the above-mentioned device improving elimination stability of crosstalk.

More than can be seen that, the present invention carries out port information collection by local side to belonging to a client eliminating crosstalk group, thus analyze port and extremely and do not support the client of this elimination crosstalk, take these clients close or reconfigure frequency range or PSD, reach and improve the purpose eliminating stability of crosstalk, can also use normally using and supporting that the client of this elimination crosstalk carries out establishing again and puts, to arrive the purpose improving elimination stability of crosstalk.

The above is only embodiments of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.

Claims (9)

1. one kind is improved elimination stability of crosstalk method, it is characterised in that including:
Local side interacts with belonging to the multiple user sides eliminated in crosstalk group and obtains port information;
Described local side determines first user end according to described port information from the plurality of user side;And
Described local side performs the first operation to described first user end, and to reduce the impact on described elimination crosstalk, described first operation includes: described local side obtains the business demand of described first user end;Described local side determines the lowest bandwidth requirement of described first user end according to described business demand;And described local side requires to configure suitable frequency range for described first user end according to described lowest-bandwidth.
2. as claimed in claim 1 raising eliminates stability of crosstalk method, it is characterised in that described first user end includes:
Do not support the user side of described elimination crosstalk group;And/or
Cross-talk models according to actual track and described elimination crosstalk group is defined as the user side that port is abnormal.
3. as claimed in claim 1 or 2 raising eliminates stability of crosstalk method, it is characterised in that described first operation also includes:
Described local side obtains the cross-talk models of described first user end;
Described local side calculates the described first user end largest tolerable noise to described elimination crosstalk according to described cross-talk models;
Described local side is that described first user end configures suitable PSD according to described largest tolerable noise.
4. as claimed in claim 1 raising eliminates stability of crosstalk method, it is characterised in that described first operation includes:
Described local side closes described first user end, and sends warning message to described first user end.
5. as claimed in claim 1 raising eliminates stability of crosstalk method, it is characterised in that described first user end includes:
The normal user side supporting described elimination crosstalk group.
6. as claimed in claim 5 raising eliminates stability of crosstalk method, it is characterised in that described first operation includes:
Described local side adjusts the configuration of the user side of described normal support described elimination crosstalk group, in order to ensure the user side stable operation of described normal support described elimination crosstalk group.
7. as claimed in claim 1 raising eliminates stability of crosstalk method, it is characterised in that described elimination crosstalk uses VECTORING method.
8. one kind is improved elimination stability of crosstalk device, it is characterised in that including:
Acquisition module, interacts for local side with belonging to the multiple user sides eliminated in crosstalk group and obtains port information;
Determine module, from the plurality of user side, determine first user end for described local side according to described port information;And
Performing module, for described local side, described first user end is performed the first operation, to reduce the impact on described elimination crosstalk, described first operation includes: described local side obtains the business demand of described first user end;Described local side determines the lowest bandwidth requirement of described first user end according to described business demand;And described local side requires to configure suitable frequency range for described first user end according to described lowest-bandwidth.
9. a local side, it is characterised in that include the device improving elimination stability of crosstalk described in claim 8.
CN201110335132.6A 2011-10-28 2011-10-28 Improve and eliminate stability of crosstalk method, device and local side CN103095337B (en)

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CN201110335132.6A CN103095337B (en) 2011-10-28 2011-10-28 Improve and eliminate stability of crosstalk method, device and local side
PCT/CN2012/076363 WO2013060142A1 (en) 2011-10-28 2012-05-31 Method, device and central office for improving stability of eliminating crosstalk

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CN103095337A (en) 2013-05-08

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