CN101257520B - User plate, digital user line access system as well as method - Google Patents
User plate, digital user line access system as well as method Download PDFInfo
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- CN101257520B CN101257520B CN200710079957XA CN200710079957A CN101257520B CN 101257520 B CN101257520 B CN 101257520B CN 200710079957X A CN200710079957X A CN 200710079957XA CN 200710079957 A CN200710079957 A CN 200710079957A CN 101257520 B CN101257520 B CN 101257520B
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Abstract
The embodiment of this invention discloses a customer plate including digital customer lines, a mode selection unit, a data stream transfer unit and a business processing unit, wherein, when receiving the business data stream from the digital customer lines, the mode selection unit selects policy according to the preset modes and judges whether to perform business processing or not; if yes, the received business data stream is processed and is then sent to a connected main control exchange veneer ; and if not, the received business data stream is simply stringed, combined and transferred and then is sent to the connected veneer provided with business processing fuction.The embodiment of this invention also discloses a digital customer line switch-in method and system thereof. The customer plate, method and system provided by the embodiment in this invention can enhance expandability of the digital customer line switch-in system.
Description
Technical field
The present invention relates to the network communications technology, particularly a kind of user's plate, digital user line access system and method.
Background technology
At present, digital subscriber line (XDSL) is the technology of main flow in the broadband access, is most widely used, and the user is maximum.The XDSL technical development is very fast, progressively develop into ADSL2 technology, VDSL technology, ADSL2+ technology and VDSL2 technology etc. by the ADSL technology, corresponding XDSL connecting system, be digital subscriber line access multiplex (DSLAM), also develop into Internet protocol (IP) DSALM and IP kernel DSLAM by ATM(Asynchronous Transfer Mode) DSLAM.
Most IP kernel DSLAM equipment in the prior art, all be IP kernel device to be placed on user's plate realize, this implementation is not high at bandwidth demand, and has certain advantage under the situation professional, that protocol processes is stable, but this implementation binds together IP kernel and user's plate, when needs upgrading IP kernel device, and the whole user's plate of must upgrading simultaneously, cause the increase of research and development and production cost, limited the extensibility of IP kernel DSLAM equipment.
Fig. 1 is the structure chart of prior art IP kernel DSLAM system.This system comprises L2/L3 Ethernet switching chip (LSW) and at least one user's plate, and wherein each user's plate comprises: the IP kernel and the XDSL that link to each other.Wherein, L2/L3LSW links to each other with the IP kernel of each user's plate by Fast Ethernet/gigabit Ethernet (FE/GE) interface.What this system adopted is full distributed business data flow processing mode, each XDSL sends to continuous IP kernel with business data flow, after carrying out Business Processing by the IP kernel, send to Ethernet switching chip again and carry out aftertreatment, and the business data flow after will handling sends to upstream plant.
In the prior art, the IP kernel uses field programmable gate array (FPGA) to realize mostly, and FPGA observes Moore's Law, changes very fast.When bandwidth demand increases or professional and agreement changes, when causing the FPGA resource exhaustion need upgrade FPGA, because carrying out the IP kernel and the subscriber line circuit of business, protocol processes all is bundled on user's plate, the whole user's plate of just need upgrading simultaneously, thus cause the periodicity emphasis of mass users plate newly developed.
If the IP core chip adopts network processing unit (NP) or ASIC to realize, because NP or ASIC have taken more area on user's plate, but can cause access customer number amount minimizing on the unique user plate equally, therefore the expense that causes each user to share increases, and cost improves.
Adopt ASIC to realize that another subject matter of IP kernel is to change when Business Processing, when perhaps bandwidth demand changed, ASIC can't adapt to, because ASIC on user's plate, also can't change, because in case change, cause whole user's plate all to change, cost is very big.
In a word, the IP kernel DSLAM system of prior art is not high to bandwidth requirement, and can satisfy business demand under the stable situation of service protocol, but this IP core chip is arranged on mode on user's plate, and autgmentability is relatively poor.
Summary of the invention
In view of this, the embodiment of the invention provides a kind of user's plate on the one hand, and a kind of digital user line access system and method are provided on the other hand, improves the extensibility of digital user line access system.
A kind of user's plate comprises: digital subscriber line XDSL, mode selecting unit, Service Processing Unit and data flow converting unit,
Described XDSL, the uplink business data after being used to handle sends to described mode selecting unit;
Described mode selecting unit is used for according to the service processing mode that is provided with the uplink business data stream that receives being sent to described Service Processing Unit or described data flow converting unit;
Described data flow converting unit be used for the uplink business data stream that receives is gone here and there and changed, and the uplink business data stream after will changing sends to the continuous veneer with service processing function;
Described Service Processing Unit is used for the uplink business data that receives is flow to after industry be engaged in to handle, and sends to the master control switching board.
A kind of digital user line access system comprises: at least one user's plate and at least one master control switching board and/or at least one have the veneer of service processing function,
Described user's plate comprises: digital subscriber line XDSL, mode selecting unit, Service Processing Unit and data flow converting unit,
Described XDSL is used for the uplink business data stream after handling is sent to described mode selecting unit;
Described mode selecting unit is used for according to the service processing mode that is provided with the uplink business data stream that receives being sent to described Service Processing Unit or described data flow converting unit;
Described data flow converting unit be used for the uplink business data stream that receives is gone here and there and changed, and the uplink business data stream after will changing sends to the continuous veneer with service processing function;
Described Service Processing Unit is used for the uplink business data that receives is flow to after industry be engaged in to handle, and uplink business data stream is sent to described master control switching board;
Described master control switching board, being used for the uplink business data that receives flowed through is transferred to upstream plant after the ether exchange;
Described veneer with service processing function is used for that the uplink business data that receives is flow to industry and is engaged in handling, and the uplink business data flow transmission after will handling is given upstream plant.
A kind of digital subscriber line cut-in method comprises the steps:
At least one digital subscriber line XDSL, mode selecting unit, Service Processing Unit and data flow converting unit are set in user's plate;
Uplink business data stream after described XDSL will handle sends to described mode selecting unit;
Described mode selecting unit sends to described Service Processing Unit or data flow converting unit according to the service processing mode that is provided with the uplink business data stream that receives;
Described data flow converting unit is gone here and there to the uplink business data stream that receives and is changed, and the uplink business data stream after will changing sends to the veneer with service processing function;
Described Service Processing Unit sends to the master control switching board with uplink business data stream after the uplink business data that receives is flow to industry affair processing.
By above technical scheme as seen, user's plate, digital user line access system and the method that the embodiment of the invention provides is by being provided with mode selecting unit and data flow converting unit in user's plate, when not needing the staging business processing unit, adopt mode same as the prior art, business data flow is carried out sending to continuous master control switching board after the Business Processing by the Service Processing Unit in user's plate; When needs staging business processing unit, adopt the data flow converting unit business data flow is simply gone here and there and change after send to continuous veneer with service processing function, carry out Business Processing by veneer with business data flow with service processing function.Therefore whether the user's plate, digital user line access system and the method that provide of the embodiment of the invention can select Business Processing firm and hard existing by the user according to real business demand, thereby has improved the extensibility of digital user line access system.
Description of drawings
Fig. 1 is the structure chart of the digital user line access system of prior art;
Fig. 2 is the structural representation of prior art user plate;
Fig. 3 is the structural representation of the digital user line access system of the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and beneficial effect clearer,, the present invention is done detailed description further below in conjunction with embodiment and accompanying drawing.
The embodiment of the invention is provided with mode selecting unit and data flow converting unit in user's plate, when mode selecting unit receives from the uplink business data of XDSL stream, judge whether to carry out Business Processing, if desired, after then the uplink business data that receives being flow to industry affair processing, send to continuous master control switching board; Otherwise the uplink business data stream that receives simply gone here and there and change after send to continuous veneer with service processing function.
The embodiment of the invention is provided with the service processing mode that should adopt the business data flow that receives according to the practical business demand in advance in mode selecting unit, adoptable service processing mode comprises: business data flow is simply gone here and there and change after send to continuous veneer with service processing function, or business data flow is carried out sending to continuous master control switching board again after the Business Processing.
Fig. 3 is the structural representation of the digital user line access system of the embodiment of the invention, and this system comprises: at least one user's plate and at least one master control switching board and/or at least one have the veneer of service processing function.
User's plate is used for according to the service processing mode that sets in advance, uplink business data stream is gone here and there and change after send to described veneer with service processing function, or uplink business data flow to send to described master control switching board after industry is engaged in handling;
The master control switching board, being used for the uplink business data that receives flowed through is transferred to upstream plant after the ether exchange;
Veneer with service processing function is used for that the uplink business data that receives is flow to industry and is engaged in handling, and the uplink business data flow transmission after will handling is given upstream plant.
As shown in Figure 3, the user's plate in this system comprises: at least one XDSL, mode selecting unit, Service Processing Unit and data flow converting unit,
XDSL is used for the uplink business data stream after handling is sent to mode selecting unit; XDSL is the digital line circuit signal processing, comprises parts such as route protection, filtering, Transceiver, AFE and DATA Pump.
Mode selecting unit is used for according to the service processing mode that is provided with the uplink business data stream that receives being sent to Service Processing Unit or data flow converting unit;
The data flow converting unit be used for the business data flow that receives is gone here and there and changed, and the uplink business data stream after will changing sends to the continuous veneer with service processing function;
Service Processing Unit after being used for the business data flow that receives carried out Business Processing, sends to the master control switching board with uplink business data stream.
Data flow converting unit in this user's plate can be made up of string and converting unit and IP bag converting unit.
IP wraps converting unit, and the uplink business data stream ATM cell that is used for receiving is converted to the IP bag, and described IP bag is sent to string and converting unit;
String and converting unit are used for described IP bag being gone here and there and changing, and the bag of the IP after the conversion is sent to the veneer with service processing function.
In this case, veneer with service processing function directly carries out Business Processing to the IP bag of the business data flow that receives, include but not limited to following part or all of content: suitable service quality (QoS) is handled, multicast service, user management, nested VLAN (QinQ), multiprotocol label switching (mpls), telecommunications ether tranmission techniques (PBT), virtual router (VR) etc., and will carry out the business data flow after the Business Processing and send to upstream plant.
If the data flow converting unit of user's plate is only gone here and there to the uplink business data stream ATM cell that receives and changed, the operation that then ATM cell is converted to the IP bag is realized by the veneer with service processing function.
In this case, the veneer with service processing function shown in Figure 3 comprises: Service Processing Unit and asynchronous transfer mode ATM processing unit.
Wherein, the ATM processing unit after being used for the ATM cell from the uplink business data of described user's plate stream is converted to the IP bag, is transferred to Service Processing Unit;
Service Processing Unit be used for the business data flow IP bag that receives is carried out Business Processing, and the stream of the uplink business data after will handling IP bag is transferred to upstream plant.
For two kinds of above-mentioned situations of compatibility, the operation that uplink business data circulation soon is changed to the IP bag now or by the veneer with service processing function realizes by the user is firm and hard, can in having the veneer of service processing function selected cell be set,
This selected cell is used for the ATM cell that the uplink business data from the data flow converting unit flows is transferred to described ATM processing unit; The IP bag that will flow from the uplink business data of described data flow converting unit is transferred to described Service Processing Unit.
Master control switching board in the system shown in Figure 3 can be Ethernet switching chip (LSW).
The embodiment of the invention provides a kind of digital subscriber line cut-in method simultaneously, and this method comprises the steps:
User's buttress is according to the service processing mode that is provided with, uplink business data is flow to sends to continuous master control switching board after industry is engaged in handling, or uplink business data stream gone here and there and change after send to veneer with service processing function.
When described user's plate is gone here and there uplink business data stream and is changed, described uplink business data stream is sent to the veneer with service processing function before, further comprise: the circulation of described uplink business data is changed to the IP bag.
By above embodiment as seen, the embodiment of the invention is by being provided with mode selecting unit and data flow converting unit in user's plate, when not needing the staging business processing unit, adopt existing digital subscriber line to carry out the business transmission, when needs staging business processing unit, adopt the data flow converting unit business data flow is simply gone here and there and change after send to continuous veneer with service processing function.Therefore digital user line access system, method and the user's plate that utilizes the embodiment of the invention to provide can improve the extensibility of digital user line access system.
In a word, the above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. user's plate is characterized in that, this user's plate comprises: digital subscriber line XDSL, mode selecting unit, Service Processing Unit and data flow converting unit,
Described XDSL is used for uplink business data stream is sent to described mode selecting unit;
Described mode selecting unit is used for according to the service processing mode that is provided with the uplink business data stream that receives being sent to described Service Processing Unit or described data flow converting unit;
Described data flow converting unit be used for the uplink business data stream that receives is gone here and there and changed, and the uplink business data stream after will changing sends to the continuous veneer with service processing function;
Described Service Processing Unit is used for the uplink business data that receives is flow to after industry be engaged in to handle, and sends to the master control switching board.
2. user's plate as claimed in claim 1 is characterized in that, described data flow converting unit comprises: string and converting unit and IP bag converting unit,
Described IP bag converting unit, the uplink business data circulation that is used for receiving is changed to the IP bag, and described IP bag is sent to described string and converting unit; The IP bag that receives is converted to ATM cell is sent to corresponding XDSL;
Described string and converting unit are used for described IP bag being gone here and there and changing, and the bag of the IP after the conversion is sent to described veneer with service processing function; To go here and there and change from the IP bag of described veneer with service processing function, the bag of the IP after the conversion will be sent to described IP bag converting unit.
3. a digital user line access system is characterized in that, this system comprises: at least one user's plate and at least one master control switching board and/or at least one have the veneer of service processing function,
Described user's plate comprises: digital subscriber line XDSL, mode selecting unit, Service Processing Unit and data flow converting unit,
Described XDSL is used for the uplink business data stream after handling is sent to described mode selecting unit;
Described mode selecting unit is used for according to the service processing mode that is provided with the uplink business data stream that receives being sent to described Service Processing Unit or described data flow converting unit;
Described data flow converting unit be used for the uplink business data stream that receives is gone here and there and changed, and the uplink business data stream after will changing sends to the continuous veneer with service processing function;
Described Service Processing Unit is used for the uplink business data that receives is flow to after industry be engaged in to handle, and uplink business data stream is sent to described master control switching board;
Described master control switching board is used for flow through ether exchange of the uplink business data that receives is transferred to upstream plant;
Described veneer with service processing function is used for that the uplink business data that receives is flow to industry and is engaged in handling, and the uplink business data flow transmission after will handling is given upstream plant.
4. system as claimed in claim 3 is characterized in that, described data flow converting unit comprises: string and converting unit and IP bag converting unit,
Described IP bag converting unit, the uplink business data stream ATM cell that is used for receiving is converted to
IP wraps, and described IP bag is sent to described string and converting unit;
Described string and converting unit are used for described IP bag being gone here and there and changing, and the bag of the IP after the conversion is sent to described veneer with service processing function.
5. system as claimed in claim 3 is characterized in that, described veneer with service processing function comprises: Service Processing Unit and asynchronous transfer mode ATM processing unit,
Described ATM processing unit after being used for the ATM cell from the uplink business data of described user's plate stream is converted to the IP bag, is transferred to described Service Processing Unit;
Described Service Processing Unit be used for the uplink business data stream IP bag that receives is carried out Business Processing, and the stream of the uplink business data after will handling IP bag is transferred to upstream plant.
6. system as claimed in claim 5 is characterized in that, described veneer with service processing function further comprises selected cell,
Described selected cell is used for the ATM cell that the uplink business data from described data flow converting unit flows is transferred to described ATM processing unit; The IP bag that will flow from the uplink business data of described data flow converting unit is transferred to described Service Processing Unit.
7. a digital subscriber line cut-in method is characterized in that, comprises the steps:
At least one digital subscriber line XDSL, mode selecting unit, Service Processing Unit and data flow converting unit are set in user's plate;
Uplink business data stream after described XDSL will handle sends to described mode selecting unit;
Described mode selecting unit sends to described Service Processing Unit or data flow converting unit according to the service processing mode that is provided with the uplink business data stream that receives;
Described data flow converting unit is gone here and there to the uplink business data stream that receives and is changed, and the uplink business data stream after will changing sends to the veneer with service processing function;
Described Service Processing Unit sends to the master control switching board with uplink business data stream after the uplink business data that receives is flow to industry affair processing.
8. method as claimed in claim 7, it is characterized in that, after described data flow converting unit is gone here and there to the uplink business data stream that receives and is changed, before uplink business data stream after described will the conversion sends to the veneer with service processing function, further comprise: described uplink business data circulation is changed to the IP bag.
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| CN200710079957XA CN101257520B (en) | 2007-02-27 | 2007-02-27 | User plate, digital user line access system as well as method |
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| CN200710079957XA CN101257520B (en) | 2007-02-27 | 2007-02-27 | User plate, digital user line access system as well as method |
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| CN101257520A CN101257520A (en) | 2008-09-03 |
| CN101257520B true CN101257520B (en) | 2010-10-13 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1267987A (en) * | 1999-03-18 | 2000-09-27 | 上海贝尔电话设备制造有限公司 | User board controller for cut-in network equipment |
| CN2805235Y (en) * | 2005-06-08 | 2006-08-09 | 中兴通讯股份有限公司 | Device for processing data business in multiple business transmission platform |
| CN1852201A (en) * | 2005-12-30 | 2006-10-25 | 华为技术有限公司 | Access-in apparatus capable of smooth updating band-width and method thereof |
| CN1909558A (en) * | 2006-08-23 | 2007-02-07 | 华为技术有限公司 | Integrated access system, method and narrow-band service interface module |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267987A (en) * | 1999-03-18 | 2000-09-27 | 上海贝尔电话设备制造有限公司 | User board controller for cut-in network equipment |
| CN2805235Y (en) * | 2005-06-08 | 2006-08-09 | 中兴通讯股份有限公司 | Device for processing data business in multiple business transmission platform |
| CN1852201A (en) * | 2005-12-30 | 2006-10-25 | 华为技术有限公司 | Access-in apparatus capable of smooth updating band-width and method thereof |
| CN1909558A (en) * | 2006-08-23 | 2007-02-07 | 华为技术有限公司 | Integrated access system, method and narrow-band service interface module |
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| CN101257520A (en) | 2008-09-03 |
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