CN101094142B - Operation process method and device of VDSL2 access device - Google Patents

Operation process method and device of VDSL2 access device Download PDF

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Publication number
CN101094142B
CN101094142B CN2007101177846A CN200710117784A CN101094142B CN 101094142 B CN101094142 B CN 101094142B CN 2007101177846 A CN2007101177846 A CN 2007101177846A CN 200710117784 A CN200710117784 A CN 200710117784A CN 101094142 B CN101094142 B CN 101094142B
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China
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vdsl2
vdsl2 access
access unit
ethernet bag
atm cell
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Expired - Fee Related
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CN2007101177846A
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Chinese (zh)
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CN101094142A (en
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张海林
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Global Innovation Polymerization LLC
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ZTE Corp
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Priority to CN2007101177846A priority Critical patent/CN101094142B/en
Publication of CN101094142A publication Critical patent/CN101094142A/en
Priority to PCT/CN2007/003942 priority patent/WO2009000126A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access

Abstract

The invention is used for realizing the support from VDSL2 access device to the service of user end. Said VDSL access device comprises a VDSL 2 access unit and a service switch unit. The method comprises: 1) setting up a SAR module on the VDSL2 access unit for use in realizing the switch between ATM cell and Ethernet packet; 2) when user end is a ADSL terminal, the VDSL2 access unit switches the received service data into ATM cell, and switches the ATM cell into Ethernet packet via SAR module; then the Ethernet packet is processed and is transmitted to the VDSL2 unit via a service switch unit; the SAR module converts the Ethernet packet into ATM cell, and after packaging, sends it to ADSL terminal.

Description

A kind of method for processing business of VDSL2 access device and device thereof
Technical field
The present invention relates to broadband access technology, particularly relate to the method for processing business and the device thereof of a kind of VDSL2 (Very-high-bit-rateDigital Subscriber loop, high-speed digital subscriber line) access device.
Background technology
Development along with broadband network, the broadband user sharply increases, and xDSL (Digital SubscriberLine, digital subscriber line) access technology is as one of width access way main on the current market, obtained to use widely, the VDSL2 technology is a kind of brand-new high speed xDSL technology, and higher bandwidth can be provided, can support the accesses network of all-around service to use, comprise data, video and voice.Its feature is that transmission rate is fast, and coverage is short, the rate-compatible self adaptation, and can be mixed with symmetry and asymmetric two kinds of transmission modes as requested.
Design for the VDSL2 broadband access equipment, generally comprise following two important modules, be VDSL2 access unit and operation exchange unit, for the VDSL2 access unit, when formulating, the VDSL2 technical standard taken into full account (Symmetrical Digital Subscriber Line to ADSL, ADSL (Asymmetric Digital Subscriber Line)) compatibility of agreement, can realize the compatibility of ADSL agreement, and for the big broadband access product of present majority, IP (Internet Protocol, Internet protocol) in its VDSL2 access unit design of the access device of exchange kernel, when the opposite end user side equipment uses VDSL2 equipment, how with EFM (802.3ah Ethernet in the First Mile, first mile Ethernet) be encapsulated as the master, for this packaged type, data flow is by after the decapsulation of VDSL2 access unit, pass to the operation exchange unit with the form of Ethernet bag and exchange processing, the operation exchange unit uses VLAN Tagged mode to do traffic differentiation.This mode realizes that the method for traffic differentiation is such, at DSLAM (DSL Access Muliplexer, Digital Subscriber Line Access Multiplexer) goes up a corresponding user port and be configured to the Tag port, and come the differentiated service type by the VLANID of packet, this requires user side MODEM can support to beat VLAN TAG, peels off function such as VLAN TAG, corresponding also have some other qos feature demand, considers will realize that other some business functions satisfy this demand on the DSLAM from fail safe and flexibility in addition.
Yet, when user side equipment is the ADSL terminal, then need at first to solve following problem: because that the encapsulation of the link of early stage ADSL is ATM (Asynchronous Transfer Mode, asynchronous transfer mode) cell, ATM cell is to exchange in the operation exchange unit of Ethernet exchcange core, and then also can't advance the multi-service differentiating and processing according to information such as VLANID, must at first convert the Ethernet bag to exchanges, so for ATM and these two kinds of packaged types of EFM, the requirement of the requirement of its Business Processing and data flow conversion is different.And demand and business development along with broadband access, multi-services operation and exchcange core IPization are basic requirements, so will on VDSL2 equipment, realize support, must at first solve the Business Processing mode that how to design the ATM business data flow when guaranteeing the EFM business data flow after the VDSL2 agreement terminates and inserting the ADSL user terminal to the ADSL user terminal.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method for processing business and device thereof of VDSL2 access device, is used to realize the business support of VDSL2 access device to the user side terminal.
To achieve these goals, the invention provides a kind of method for processing business of VDSL2 access device, be used to realize the business support of VDSL2 access device to the user side terminal, described VDSL2 access device comprises VDSL2 access unit, operation exchange unit, it is characterized in that this method comprises:
Step 1 is provided with a SAR module on described VDSL2 access unit, is used to realize the conversion between ATM cell and the Ethernet bag;
Step 2, when described user side terminal is the ADSL terminal, described VDSL2 access unit converts the business data flow that receives to an ATM cell, and described ATM cell is converted to the Ethernet bag by described SAR module, more described operation exchange unit is handled and be sent to described Ethernet bag;
Described operation exchange unit is sent to described VDSL2 access unit after described Ethernet bag is handled, described VDSL2 access unit converts described Ethernet bag to described ATM cell by described SAR module, more described ATM cell is carried out being sent to described ADSL terminal after the encapsulation process.
The method for processing business of described VDSL2 access device, wherein, in the described step 2, also comprise: according to the PVC information in the described ATM cell field of the VLAN TAG of described Ethernet bag is filled the step of processing by described VDSL2 access unit, the field of described VLAN TAG is the combination of VLAN id field, priority field or VLAN id field and priority field.
The method for processing business of described VDSL2 access device, wherein, in the described step 2, also comprise: determine the step of the PVC information in the described ATM cell by described VDSL2 access unit according to the information of the VLAN TAG of described Ethernet bag, the information of described VLAN TAG is the combination of VLAN id field, priority field or VLAN id field and priority field.
The method for processing business of described VDSL2 access device wherein, in the described step 2, also comprises: according to described PVC information described ATM cell is carried out the ADSL protocol encapsulation and handle the step that generates the ADSL agreement.
The method for processing business of described VDSL2 access device wherein, in the described step 2, also comprises:
When described user side terminal was the VDSL2 terminal, described VDSL2 access unit converted the business data flow that receives one Ethernet bag to and is sent to described operation exchange unit;
Described operation exchange unit is sent to described VDSL2 access unit after described Ethernet bag is handled, and described VDSL2 access unit carries out being sent to described VDSL2 terminal after the encapsulation process to described Ethernet bag.
The method for processing business of described VDSL2 access device, wherein, in the described step 2, also comprise: before described Ethernet bag is sent to described VDSL2 access unit, the step of carrying out operation exchange according to the mac address information and/or the VLANID information of described Ethernet bag by described operation exchange unit.
The method for processing business of described VDSL2 access device wherein, in the described step 2, also comprises: by described VDSL2 access unit described Ethernet bag is carried out the VDSL2 protocol encapsulation and handle the step that generates the VDSL2 agreement.
To achieve these goals, the present invention also provides a kind of business processing device of VDSL2 access device, be used to realize of the business support of VDSL2 access device to the user side terminal, described VDSL2 access device comprises VDSL2 access unit, operation exchange unit, it is characterized in that described business processing device comprises:
One SAR module is arranged on the described VDSL2 access unit, is used to realize the conversion between ATM cell and the Ethernet bag;
When described user side terminal is the ADSL terminal, described VDSL2 access unit converts the business data flow that receives to an ATM cell, and described ATM cell is converted to the Ethernet bag by described SAR module, more described operation exchange unit is handled and be sent to described Ethernet bag;
Described operation exchange unit is sent to described VDSL2 access unit after described Ethernet bag is handled, described VDSL2 access unit converts described Ethernet bag to described ATM cell by described SAR module, more described ATM cell is carried out being sent to described ADSL terminal after the encapsulation process.
The business processing device of described VDSL2 access device, wherein, also comprise: an ADSL protocol process module is arranged on the described VDSL2 access unit, be used for the encapsulation format of described business data flow is finished the finalization process of ADSL agreement, to convert described ATM cell to.
The business processing device of described VDSL2 access device, wherein, also comprise: a VDSL2 protocol process module, be arranged on the described VDSL2 access unit, be used for when described user side terminal is the VDSL2 terminal, the encapsulation format of the business data flow that described VDSL2 access unit is received is finished the finalization process of VDSL2 agreement, to convert described Ethernet bag to.
The present invention is directed to the problem that the VDSL2 broadband access equipment supports that simultaneously VDSL2 user terminal and ADSL user terminal run into, a kind of method for processing business of VDSL2 access device is provided, can realize by this method the ADSL subscriber terminal equipment of ATM packaged type is provided support, and can realize the support good multi-services operation.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Description of drawings
Fig. 1 is the modular structure exemplary plot of VDSL2 broadband access equipment of the present invention;
Fig. 2 is the business datum method for stream processing exemplary plot of user's side joint ADSL user terminal of the present invention;
Fig. 3 is the business datum method for stream processing exemplary plot of user's side joint VDSL2 user terminal of the present invention.
Embodiment
With embodiment technical scheme of the present invention is made further more detailed description with reference to the accompanying drawings below.
As shown in Figure 1, be the modular structure exemplary plot of VDSL2 broadband access equipment of the present invention.At first on system architecture, select the VDSL2 access unit 10 of supporting built-in SAR module 101 for use, also be provided with VDSL2 protocol process module 102, ADSL protocol process module 103 in the VDSL2 access unit 10, VDSL2 protocol process module 102 is used to finish the finalization process of VDSL2 agreement; ADSL protocol process module 103 is used to finish the finalization process of ADSL agreement.SAR module 101 is used to realize the conversion of Ethernet bag and ATM cell.
Operation exchange unit 20 can be selected Ethernet packet handlers such as network processing unit, FPGA, exchange chip or ASIC for use, be example with FPGA 20 below, connect with the POTSPHY bus between FPGA 20 and the VDSL2 access unit 10, a VDSL2 access unit 10 may be supported a plurality of user ports, comprising 2 VDSL2 ports with a VDSL2 access unit 10 in the present embodiment is example, and system configuration as shown in Figure 1.
When user side connects the VDSL2 user terminal, on the up direction, VDSL2 protocol process module 102 is finished the termination of VDSL2 agreement, the VDSL2 protocol encapsulation mode of business data flow promptly terminates, and flowing to FPGA 20 with the business datum that the form of Ethernet bag is transmitted user side, FPGA 20 carries out operation exchange according to information such as the MAC Address of Ethernet bag and VLANID.
When user side connects the VDSL2 user terminal, on the down direction, the business data flow that FPGA 20 is sent to needs the VDSL2 user side passes to VDSL2 access unit 10 with the form of Ethernet bag, VDSL2 access unit 10 directly encapsulates the form of Ethernet bag with the VDSL2 agreement, and is sent on the VDSL2 user terminal of user side.
When user side connects the ADSL user terminal, on the up direction, ADSL protocol process module 103 is finished the termination of VDSL2 agreement, the ADSL protocol encapsulation mode of business data flow promptly terminates, and recovery ATM cell, SAR module 101 is assembled into the Ethernet bag to ATM cell, and according to (the Permanent Virtual Circuit of the PVC in the ATM cell, PVC) relevant field among the VLAN TAG in the information filling Ethernet bag, realize the mapping one to one of ATM PVC logic port and VLAN TAG, this mapping one to one can be used the VLANID field, also can use the combination of priority field or VLANID field and priority field.Transmit this Ethernet bag then to FPGA 20.
When user side connects the ADSL user terminal, on the down direction, FPGA 20 is sent to VDSL2 access unit 10 to the Ethernet bag after handling, SAR module 101 splits into ATM cell to the Ethernet bag, during fractionation, determine in the ATM cell PVC number according to the relevant information among the VLAN TAG of Ethernet bag, this relevant information can be the VLANID field, it also can be the combination of priority field or VLANID field and priority field, then the form of ATM cell with the ADSL agreement encapsulated, and be sent on the ADSL user terminal of user side.
As shown in Figure 2, be the business datum method for stream processing exemplary plot of user's side joint VDSL user terminal of the present invention.When user side link VDSL2 user terminal, the processing of business data flow is treated to example with the data flow of port one as shown in Figure 2, and detailed process is as follows:
Step 201, when user side connects the VDSL2 user terminal, on the up direction, after receiving the business data flow that sends up from user side, VDSL2 protocol process module 102 is finished the termination of VDSL2 agreement, and the business data flow of this moment is the EFM encapsulation format, business data flow after the termination promptly is the Ethernet bag, among Fig. 2, the form of Ethernet bag is the packet of VLAN TAG, supports the packet of untagged in fact equally.By POTSPHY bus FPGA 20, FPGA 20 carries out next step operation exchange according to information such as the MAC Address of Ethernet bag and VLANID and exports to upper level VDSL2 access unit 10 this Ethernet bag.
Step 202, when user side connects the VDSL2 user terminal, on the down direction, FPGA 20 receives the corresponding service data flow from other switching equipment of upper level that connected, when finding that business data flow is in the time of need passing to port one, FPGA 20 is sent to needs the business data flow of user side by the POTSPHY bus, form with the Ethernet bag passes to VDSL2 access unit 10, VDSL2 access unit 10 directly encapsulates the form of Ethernet bag with the VDSL2 agreement, and generation VDSL2 agreement also is delivered on the VDSL2 user terminal of user side.
As shown in Figure 3, be the business datum method for stream processing exemplary plot of user's side joint ADSL2 user terminal of the present invention.When user side connected the ADSL user terminal, the processing of business data flow was treated to example with the data flow of port one as shown in Figure 3, and detailed process is as follows:
Step 301, when user side connects the ADSL user terminal, on the up direction, when VDSL2 access unit 10 is received the upstream data bag of port one, at first finish the termination of ADSL agreement, and recovery ATM cell, VDSL2 access unit 10 built-in SAR modules 101 are assembled into the Ethernet bag to ATM cell, and according to the relevant field among the VLAN TAG in the filling of the PVC information in the ATM cell Ethernet bag, among Fig. 3, the Ethernet bag of the packet of PVCl interpolation Tagged VLANID=1,, realize the mapping one to one of ATM PVC logic port and VLANID the Ethernet bag of the packet of PVC2 interpolation Tagged VLANID=2.VDSL2 access unit 10 passes to FPGA 20 to packet by the POSPHY bus and handles then.
Step 302, when user side connects the ADSL user terminal, on the down direction, when FPGA 20 receives the business data flow that need mail to port one, business data flow is delivered to the VDSL2 access unit 10 of port one, VDSL2 access unit 10 built-in SAR modules 101 at first split into ATM cell to the Ethernet bag, add the related cells header of PVCl during fractionation according to the packet among the VLANID=1, add the related cells header of PVC2 according to the packet among the VLANID=2, then the form of ATM cell with the ADSL agreement encapsulated, generation ADSL agreement also is transferred on the ADSL user terminal of user side.
The present invention has realized that by above processing method a kind of VDSL2 broadband access equipment supports the purpose of the access of VDSL2 user side terminal and ADSL user side terminal simultaneously.
The inventive method is the implementation method of a kind of VDSL2 broadband access equipment business module when supporting VDSL2 terminal and ADSL terminal simultaneously and supporting multi-service, this method can realize the ADSL Termination Unit of ATM packaged type is provided support, and can realize the support good to multi-services operation, this is because do not need to be treated differently the business data flow situation that connects VDSL2 terminal and ADSL terminal on the operation exchange unit, all handles with the form of Ethernet bag.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.

Claims (8)

1. the method for processing business of a VDSL2 access device is used to realize the business support of VDSL2 access device to the user side terminal, and described VDSL2 access device comprises VDSL2 access unit, operation exchange unit, it is characterized in that, this method comprises:
Step 1 is provided with a segmentation and reorganization SAR module on described VDSL2 access unit, is used to realize the conversion between ATM cell and the Ethernet bag;
Step 2, when described user side terminal is the ADSL terminal, described VDSL2 access unit converts the business data flow that receives to an ATM cell, and described ATM cell is converted to the Ethernet bag by described segmentation and reorganization SAR module, more described operation exchange unit is handled and be sent to described Ethernet bag;
Described operation exchange unit is sent to described VDSL2 access unit after described Ethernet bag is handled, described VDSL2 access unit converts described Ethernet bag to described ATM cell by described segmentation and reorganization SAR module, more described ATM cell is carried out being sent to described ADSL terminal after the encapsulation process.
2. the method for processing business of VDSL2 access device according to claim 1, it is characterized in that, in the described step 2, also comprise: according to the PVC information in the described ATM cell field of the VLAN TAG of described Ethernet bag is filled the step of processing by described VDSL2 access unit, the field of described VLAN TAG is the combination of VLAN id field, priority field or VLAN id field and priority field.
3. the method for processing business of VDSL2 access device according to claim 2, it is characterized in that, in the described step 2, also comprise: determine the step of the PVC information in the described ATM cell by described VDSL2 access unit according to the information of the VLANTAG of described Ethernet bag, the information of described VLAN TAG is the combination of VLAN id field, priority field or VLAN id field and priority field.
4. the method for processing business of VDSL2 access device according to claim 1 and 2 is characterized in that, in the described step 2, also comprises:
When described user side terminal was the VDSL2 terminal, described VDSL2 access unit converted the business data flow that receives one Ethernet bag to and is sent to described operation exchange unit;
Described operation exchange unit is sent to described VDSL2 access unit after described Ethernet bag is handled, and described VDSL2 access unit carries out being sent to described VDSL2 terminal after the encapsulation process to described Ethernet bag.
5. the method for processing business of VDSL2 access device according to claim 4, it is characterized in that, in the described step 2, also comprise: before described Ethernet bag is sent to described VDSL2 access unit, the step of carrying out operation exchange according to the mac address information and/or the VLANID information of described Ethernet bag by described operation exchange unit.
6. the business processing device of a VDSL2 access device, be used to realize of the business support of VDSL2 access device to the user side terminal, described VDSL2 access device comprises VDSL2 access unit, operation exchange unit, it is characterized in that, described business processing device comprises:
One segmentation and reorganization SAR module are arranged on the described VDSL2 access unit, are used to realize the conversion between ATM cell and the Ethernet bag;
When described user side terminal is the ADSL terminal, described VDSL2 access unit converts the business data flow that receives to an ATM cell, and described ATM cell is converted to the Ethernet bag by described segmentation and reorganization SAR module, more described operation exchange unit is handled and be sent to described Ethernet bag;
Described operation exchange unit is sent to described VDSL2 access unit after described Ethernet bag is handled, described VDSL2 access unit converts described Ethernet bag to described ATM cell by described segmentation and reorganization SAR module, more described ATM cell is carried out being sent to described ADSL terminal after the encapsulation process.
7. the business processing device of VDSL2 access device according to claim 6, it is characterized in that, also comprise: an ADSL protocol process module, be arranged on the described VDSL2 access unit, be used for the encapsulation format of described business data flow is finished the finalization process of ADSL agreement, to convert described ATM cell to.
8. according to the business processing device of claim 6 or 7 described VDSL2 access devices, it is characterized in that, also comprise: a VDSL2 protocol process module, be arranged on the described VDSL2 access unit, be used for when described user side terminal is the VDSL2 terminal, the encapsulation format of the business data flow that described VDSL2 access unit is received is finished the finalization process of VDSL2 agreement, to convert described Ethernet bag to.
CN2007101177846A 2007-06-22 2007-06-22 Operation process method and device of VDSL2 access device Expired - Fee Related CN101094142B (en)

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PCT/CN2007/003942 WO2009000126A1 (en) 2007-06-22 2007-12-29 Vdsl2 accessing device and service handing method thereof

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CN101094142B (en) * 2007-06-22 2010-08-18 中兴通讯股份有限公司 Operation process method and device of VDSL2 access device
CN103684940A (en) * 2013-11-27 2014-03-26 国家电网公司 TD-LTE (time division long term evolution) based power distribution and utilization network business management system
CN108418741A (en) * 2018-03-07 2018-08-17 山东超越数控电子股份有限公司 A kind of extension vlan policy division methods based on VLAN id fields
CN110601967A (en) * 2019-08-22 2019-12-20 深圳震有科技股份有限公司 Processing method, device, equipment and medium for supporting ADSL in PTM mode
CN111586246B (en) * 2020-04-28 2021-10-08 深圳震有科技股份有限公司 PTM compatible ADSL and VDSL processing method, equipment and medium
CN113449948A (en) * 2020-12-31 2021-09-28 北京新氧科技有限公司 Service processing method, device, electronic equipment and medium

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