CN102811156A - Packet transport network (PTN) equipment and packet service transmission method - Google Patents
Packet transport network (PTN) equipment and packet service transmission method Download PDFInfo
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- CN102811156A CN102811156A CN201110145781XA CN201110145781A CN102811156A CN 102811156 A CN102811156 A CN 102811156A CN 201110145781X A CN201110145781X A CN 201110145781XA CN 201110145781 A CN201110145781 A CN 201110145781A CN 102811156 A CN102811156 A CN 102811156A
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- ethernet bag
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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
- H04L12/2858—Access network architectures
Abstract
The invention discloses packet transport network (PTN) equipment. The PTN equipment comprises a main system processing module and a digital subscriber line (DSL) integrated circuit board, wherein the main system processing module is used for transmitting an Ethernet packet corresponding to packet service to the DSL integrated circuit board, and receiving the Ethernet packet transmitted from the DSL integrated circuit board; and the DSL integrated circuit board is used for processing the Ethernet packet received from the main system processing module to obtain a DSL signal transmitted on a DSL line, transmitting the DSL signal to the DSL line for transmitting, processing the DSL signal from the DSL line to obtain the Ethernet packet, and transmitting the Ethernet packet to the main system processing module. By using the PTN equipment and the packet service transmission method, the service, such as high speed downlink packet access (HSDPA), with low-delay requirement can be carried by an operator by using the scheme in the application that the DSL line erected by others needs to be rented and lent when certain networks are not very convenient to erect abroad; and the cost of the operator is greatly saved.
Description
Technical field
The present invention relates to DSL (Digital Subscriber Line, digital subscriber line) technology and PTN (Packet Transport Network, grouping conveying network) technology in the mechanics of communication, relate in particular to a kind of PTN equipment and packet service transmission method.
Background technology
Along with the continuous development of the communication technology, telecommunication service is gradually IPization also, and the transmission network loaded service is main to divide into groups to be transmitted as main the transformation with IP from being transmitted as with TDM (Time Division Multiple, time division multiplexing).Because have in transmission Packet Service process that bandwidth is not enough, information is delayed and problem such as network operation difficulty towards the Digital Subscriber Line xDSL transmission network of the professional design of TDM, traditional xDSL transmission network has been difficult to satisfy the transmission demand of IP Packet Service.
Based on the multi-service transport platform MSTP technology of SDH (Synchronous Digital Hierarchy synchronous digital hierarchy) transmitting function of carrier class Packet Service can be provided to a certain extent, be optical transfer network to the divide into groups evolution trend that transmits of IP.But MSTP remains with TDM as kernel, is main application demand so more and more be difficult to satisfy with the Packet Service.
The appearance of PTN (Packet Transport Network, Packet Transport Network) technology is fine must to have solved this problem.Packet Transport Network is that a kind of stressing transmitted packet, tradition is transmitted net IPization, connection-oriented multi-service tranmission techniques; It has advantages such as QOS assurance, high reliability, carrier class maintenance management and extensibility; Be illustrated in figure 1 as existing P TN network architecture diagram, base station node B is connected with radio network controller (RNC) through PTN equipment.
Along with of the evolution of traditional xDSL network to the PTN network; It is complicated and changeable that whole communication network also becomes; Especially external communication network situation especially is complicated; Operator utilizes existing resource more fully in order to practice thrift cost, often is not that whole net as shown in Figure 1 all adopts the PTN network architecture; For picture HSDPA (High Speed Downlink Packet Access; High speed downlink packet inserts) etc. be not very high business for delay requirement, may rent various Digital Subscriber Line xDSL networks and DSLAM (Data Subscriber Line Access Mulitiplexer, digital subscriber line access multiplex) equipment interconnection in the centre and carry this part business.In this case, using the xDSL circuit to carry the grouping transport service just arises at the historic moment.
Yet,, also do not have a kind of good solution at present for how in the Packet Service transmission course, renting the xDSL network.
Summary of the invention
The present invention provides a kind of PTN equipment and packet service transmission method; In order to satisfy at the SDH network to PTN network transition period; Operator uses the xDSL circuit to carry the demand of grouping transport service; A large amount of xDSL transmission networks that utilization of the present invention has been laid have utilized existing resource fully, have reduced networking cost.
For solving the problems of the technologies described above, the present invention provides a kind of grouping conveying network PTN equipment, comprises main system processing module and digital user wire DSL integrated circuit board, wherein:
Said main system processing module is used for the Ethernet bag that Packet Service is corresponding and sends to said DSL integrated circuit board, and receives the Ethernet bag that the DSL integrated circuit board transmits;
Said DSL integrated circuit board is used for the Ethernet bag that receives from the main system processing module is handled, and obtains the DSL signal that can on the DSL circuit, transmit, and sends on the DSL circuit and transmit; Obtain the Ethernet bag to handling, and send to said main system processing module from the DSL signal of DSL circuit.
The present invention also provides a kind of packet service transmission method, comprising:
When sending Packet Service, the main system processing module Ethernet bag that Packet Service is corresponding sends to said DSL integrated circuit board;
Said DSL integrated circuit board will be handled from the Ethernet bag that the main system processing module receives, and obtain the DSL signal that can on the DSL circuit, transmit, and send on the DSL circuit and transmit;
When receiving Packet Service, the DSL integrated circuit board obtains the Ethernet bag to handling from the DSL signal of DSL circuit, and sends to the main system processing module; The main system processing module receives the Ethernet bag that the DSL integrated circuit board transmits.
Support of the present invention is cut into slices to the Ethernet bag that exceeds DSL circuit bearing capacity and is organized bag and handle; Realized application DSL circuit transmission Packet Service; Thereby thereby can so that operator abroad some networks set up in the application that is not easily need to lease the DSL circuit that others has set up; Use this scheme to carry the business of low delay requirements such as HSDPA, practiced thrift the cost of operator greatly.
Description of drawings
Fig. 1 is a kind of networking sketch map of present grouping conveying network;
Fig. 2 is that a kind of DSL integrated circuit board provided by the invention is formed structure chart;
Fig. 3 is an a kind of grouping conveying network provided by the invention system;
Fig. 4 is a kind of transmission packet service method provided by the invention;
Fig. 5 is a kind of reception packet service method provided by the invention;
Fig. 6 is a kind of DSL integrated circuit board processing method provided by the invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment PTN equipment and packet service transmission method that the present invention proposes are explained in more detail.
The present invention provides a kind of grouping conveying network PTN equipment, specifically can realize that wherein, the PTN system equipment comprises the main system processing module, can carry out communication with the DSL integrated circuit board by an integrated DSL integrated circuit board on the PTN system equipment.The operation of entire equipment principle is: the main system processing module sends to the DSL integrated circuit board with the corresponding Ethernet bag of Packet Service that equipment received; The DSL integrated circuit board is handled the Ethernet bag that receives; Obtain the DSL signal that can on the DSL circuit, transmit, and send on the DSL circuit and transmit; The DSL integrated circuit board obtains the Ethernet bag to handling from the DSL signal of DSL circuit, and sends to said main system processing module and handle.
Through a DSL integrated circuit board is inserted on the PTN system equipment; Accomplished the mutual conversion between Packet Service and the DSL signal; Thereby realized that Packet Service can be in the transmission on the DSL circuit; Thereby make operator abroad some networks set up in the application that is not easily need to lease the DSL circuit that others has set up, use this scheme to carry the business of low delay requirements such as HSDPA, practiced thrift the cost of operator greatly.
Existing P TN network can be used E1 technical transmission TDM business at present; But this only is applied to the situation that whole net all adopts the PTN network architecture; Preferably; When using grouping conveying network PTN equipment of the present invention, the main system processing module can be encapsulated into the Ethernet bag with the TDM business that inserts, and redispatches and carries out the DSL signal conversion processes to the DSL integrated circuit board.
Preferably, the main system processing module can send to the DSL integrated circuit board with the Ethernet bag that the uni interface (User Network Interface, User Network Interface) of other existing integrated circuit boards in the PTN system equipment inserts.
As shown in Figure 2, the DSL integrated circuit board is made up of control module 201, logic module 202, DSL processing module 203, clock module 204, power module 205 and DSL interface 206 in the present embodiment, wherein,
Control module 201 is responsible for carrying out communication with the main system processing module of PTN system equipment, and as the control unit of whole DSL integrated circuit board, is responsible for control logic module 202 and handles with 203 pairs of data of DSL processing module.
Preferably; Control module 201 mainly comprises the CPU that is used for the communication of main system processing module, be used for resetting and the CPLD of decoding etc. and be used to guide control module to start BOOT ROM of each module on the DSL integrated circuit board; After whole DSL integrated circuit board is inserted on the PTN system equipment; Control module 201 is accomplished processes such as the startup, version loading, logic loading of integrated circuit boards, and with the communication of main system processing module, guarantee that whole DSL integrated circuit board normally moves.
Logic module 202 is used under the control of control module 201, will carry out the relevant processing of service logic from the Ethernet bag that the main system processing module receives, and the Ethernet bag after will handling sends to DSL processing module 203; The Ethernet bag that receives from DSL processing module 203 is carried out the relevant processing of service logic, the Ethernet bag after handling is sent to the main system processing module.
Preferably, the logic module 202 DSL processing module 203 that will be in parallel distributed to from the Ethernet bag that the main system processing module receives will converge from the Ethernet bag that DSL processing module 203 receives and send to the main system processing module.
Preferably; Logic module 202 can be carried out the relevant processing of following service logic to the Ethernet bag: encapsulation OAM message is used for the Operation and Maintenance and the management of transmission equipment, and makes that transmission is more reliable; Encapsulate 1588 clock synchronization protocol messages, be used to keep clock and the time synchronized between the terminal device.
Preferably, logic module 202 uses 8 road Media Independent Interfaces to be connected with DSL processing module 203.
DSL processing module 203 is used under the control of control module 201, will convert into from the Ethernet bag that logic module 202 receives to send to the DSL circuit behind the DSL signal and transmit; To be to send to said logic module 202 behind the Ethernet bag from the DSL conversion of signals that the DSL circuit receives.
Preferably, DSL processing module 203 converts Ethernet service into the DSL Signal Processing and comprises processes such as DSL framing, coding, modulation, driving amplification; With the DSL conversion of signals is that the processing of Ethernet bag comprises that DSL rectification, decoding conciliate framing.
Preferably, DSL processing module 203 adopts two DSL chips to accomplish the processing of parallel data, and wherein every DSL chip is supported 4 road DSL Signal Processing;
Preferably, DSL processing module 203 sends the DSL signal through DSL interface 206.
DSL interface 206 is used for being connected with the DSL circuit with DSL processing module 203 respectively, and 203 parallel transmission DSL of DSL processing module signal.
Preferably; The port number of DSL interface 206 parallel transmission DSL signals is consistent with the port number of logic module 202 and 203 parallel transmission Ethernets of DSL processing module bag; For example, DSL interface 206 uses the 8 road corresponding interfaces of 8 road Media Independent Interfaces that use with logic module 202.
For the grouping conveying network PTN equipment among this embodiment; Preferably; When the main system processing module exceeds the bearing capacity of one or more DSL circuit at definite Ethernet bag; Said Ethernet bag is confirmed as overload Ethernet bag, and when defining the transmission of overload Ethernet bag, send the binding instruction to the control module 201 of DSL integrated circuit board; Control module 201 is when the binding instruction that receives the transmission of main system processing module; Control logic module 202 sends to DSL processing module 203 through the overload Ethernet bag of designated port after with the service logic relevant treatment; 203 pairs of overload of control DSL processing module Ethernet bag is cut into slices; And the Ethernet bag after the section added carry out the Ethernet bag again and convert the DSL Signal Processing into after the section sign.
Preferably; The embodiment of the invention adopts grouping conveying network system as shown in Figure 3, and wherein, the grouping transport service is with the form of DSL signal; Send to the DSLAM equipment of the first line of a couplet through the DSL circuit; And behind MPLS network of break-through or IP network, give RNC (Radio Network Controller, radio network controller) via the PTN equipment of far-end.
The present invention provides a kind of packet service transmission method, is divided into sending the Packet Service direction and receiving two kinds in Packet Service direction, and wherein, transmission Packet Service direction is as shown in Figure 4, may further comprise the steps:
Step S401, the UNI user interface access network based on ethernet bag of PTN system equipment.
Step S402, the main system processing module judges whether to exist the Ethernet bag that exceeds DSL circuit bearing capacity, if do not exist, execution in step S403 then, otherwise, execution in step S408.
Step S403, the main system processing module is sent Ethernet bag, execution in step 404 to the DSL integrated circuit board.
Step S404, the control module control logic module and the DSL processing module of DSL integrated circuit board are handled execution in step S405 to the Ethernet bag.
Step S405, logic module receives the Ethernet bag of autonomous system processing module, and after the Ethernet bag being carried out the relevant processing of service logic, with its DSL processing module that is in parallel distributed to, execution in step S406.
Step S406, the DSL processing module receives parallel Ethernet bag, to sending to the DSL interface after its DSL signal conversion processes.
Step S407, DSL interface directly send to the DSL circuit with the DSL signal and transmit.
Step S408, the main system processing module is carried out label to overload Ethernet bag and is generated when defining overload Ethernet bag and send, and sends to control module and to bind instruction, overload Ethernet bag is cut into slices and organizes bag and handles execution in step S409 with indication.
Step S409, the main system processing module is sent the overload Ethernet bag that carries label, execution in step S410 to the DSL integrated circuit board.
Step S410 when control module receives said binding instruction, sends the overload processing instruction to logic module, sends slicing treatment instruction, execution in step S411 to the DSL processing module;
Step S411, logic module receives overload Ethernet bag, it is carried out the relevant processing of service logic after, it is sent to DSL processing module, execution in step S412 through designated port.
Step S412, the DSL processing module is carried out slicing treatment to said overload Ethernet bag, and the Ethernet bag after the section added carries out the Ethernet bag again and convert the DSL Signal Processing into, and send to DSL interface, execution in step S413 after the section sign.
Step S413, DSL interface send to the DSL circuit with the DSL signal and transmit.
It is as shown in Figure 5 to receive the Packet Service direction, may further comprise the steps:
Step S501, the DSL integrated circuit board receives the parallel DSL signal that the DSL circuit sends.
Step S502, the DSL processing module is handled parallel DSL signal and is obtained parallel Ethernet bag, and it is directly sent to said logic module.
Step S503, logic module receives the parallel Ethernet bag from the DSL processing module, and after the Ethernet bag being carried out the relevant processing of service logic, the Ethernet bag that will walk abreast is gathered together, and sends to said main system processing module.
Step S504, the main system processing module receives the Ethernet bag, and it is carried out operation exchange, sends to other existing integrated circuit boards of PTN system equipment.
Preferably, the main system processing module can be specified the Ethernet bag after the sheet number that will cut into slices to overload Ethernet bag and the port binding transmission group bag that can use which road DSL interface, and these packets of information are contained in the binding instruction that control module is sent; When control module receives this binding instruction; In the overload processing instruction that logic module is sent, include the information that this overload Ethernet bag that carries label is sent to the DSL processing module with which port; And control module includes following information in the slicing treatment instruction that the DSL processing module is sent: port path, the need that receive this overload Ethernet bag number of times that the Ethernet bag is cut into slices that will overload, and use the Ethernet bag behind the port binding transmission group bag of which road DSL interface.
Preferably, the embodiment of the invention adopts DSL integrated circuit board as shown in Figure 6 to handle, and wherein, logic module is carried out the relevant processing of service logic to the Ethernet bag, specifically comprises Ethernet is sealed dress OAM message and 1588 clock synchronization protocol messages; The DSL processing module converts Ethernet service into the DSL Signal Processing and comprises processes such as DSL framing, coding, modulation, driving amplification, is that the processing of Ethernet bag comprises that DSL rectification, decoding conciliate framing with the DSL conversion of signals.
Preferably, can on SHDSL (Symmetric High Bit Rate Digital Subscriber Line, single pair high bit rate digital subscriber loop) circuit, use PTN equipment of the present invention and packet service transmission method.
SHDSL belongs to a kind of in the DSL technology, and it has professional, compatible good, the advantages such as data transmission bauds is high, long transmission distance of the bi-directional symmetrical of support, mainly towards medium-sized and small enterprises or business user.
It is a kind of through an integrated SHDSL integrated circuit board on the PTN system equipment that the present invention provides, and realizes hoping to use the SHDSL circuit to carry the demand of grouping transport service through SHDSL circuit transmission Packet Service thereby satisfy operator.
In the embodiment of the invention, the SHDSL integrated circuit board is supported the Ethernet bag is accomplished the adaptive of AAL5, can accomplish the conversion of Ethernet bag to ATM cell, accomplishes ATM cell afterwards and is encapsulated in the DSL frame, thereby support the ATM business model; The SHDSL integrated circuit board can be accomplished too the Ethernet bag is carried out the EFM encapsulation; Be encapsulated in the DSL frame afterwards again; Thereby support the EFM business model, therefore, the SHDSL integrated circuit board of the embodiment of the invention can be supported the two kinds of forms of SHDSL frame based on the SHDSL frame of ATM and EFM.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (11)
1. a grouping conveying network PTN equipment is characterized in that, comprises main system processing module and digital user wire DSL integrated circuit board, wherein:
Said main system processing module is used for the Ethernet bag that Packet Service is corresponding and sends to said DSL integrated circuit board, and receives the Ethernet bag that the DSL integrated circuit board transmits;
Said DSL integrated circuit board is used for the Ethernet bag that receives from the main system processing module is handled, and obtains the DSL signal that can on the DSL circuit, transmit, and sends on the DSL circuit and transmit; Obtain the Ethernet bag to handling, and send to said main system processing module from the DSL signal of DSL circuit.
2. equipment as claimed in claim 1 is characterized in that,
When the main system processing module defines the overload Ethernet bag transmission that exceeds DSL circuit bearing capacity, send the binding instruction to the DSL integrated circuit board;
The DSL integrated circuit board is according to the binding instruction that receives, and overload Ethernet bag cut into slices and the Ethernet bag after the section added carry out the Ethernet bag again and convert the DSL Signal Processing into after the section sign;
When the Ethernet bag that the DSL integrated circuit board obtains after confirming the DSL signal handled has the section sign, package according to the section sign, the Ethernet bag that will organize again after wrapping sends to said main system processing module.
3. according to claim 1 or claim 2 equipment is characterized in that said DSL integrated circuit board comprises: control module, logic module and DSL processing module, wherein,
Logic module is used under the control of control module, will carry out the relevant processing of service logic from the Ethernet bag that the main system processing module receives, and the Ethernet bag after will handling sends to the DSL processing module; The Ethernet bag that receives from the DSL processing module is carried out the relevant processing of service logic, the Ethernet bag after handling is sent to the main system processing module;
The DSL processing module is used under the control of control module, will convert into from the Ethernet bag that logic module receives to send to the DSL circuit behind the DSL signal and transmit; To be to send to said logic module behind the Ethernet bag from the DSL conversion of signals that the DSL circuit receives.
4. equipment as claimed in claim 3; It is characterized in that; Said control module is used for when receiving the binding instruction that the main system processing module sends, and control logic module sends to the DSL processing module through the overload Ethernet bag of designated port after with the service logic relevant treatment; Control DSL processing module is cut into slices to overload Ethernet bag and the Ethernet bag after the section is added and carries out the Ethernet bag again and convert the DSL Signal Processing into after the section sign.
5. like the said equipment of claim 3, it is characterized in that said DSL processing module specifically obtains the DSL signal through the Ethernet bag being carried out DSL framing, coding, modulation; Through the DSL signal is carried out the DSL rectification, decoding is conciliate framing and is obtained the Ethernet bag.
6. equipment as claimed in claim 3 is characterized in that, also comprises:
The DSL interface is used for being connected with the DSL circuit with the DSL processing module respectively parallel transmission DSL signal between DSL processing module and DSL circuit.
7. equipment as claimed in claim 6 is characterized in that,
Parallel transmission Ethernet bag between said logic module and DSL processing module, and the port number of parallel transmission Ethernet bag is consistent with the port number of parallel transmission DSL signal.
8. equipment as claimed in claim 3 is characterized in that,
Said logic module specifically is connected with said DSL processing module through Media Independent Interface;
Said DSL processing module comprises at least one DSL chip.
9. a packet service transmission method is characterized in that, comprising:
When sending Packet Service, the main system processing module Ethernet bag that Packet Service is corresponding sends to said DSL integrated circuit board;
Said DSL integrated circuit board will be handled from the Ethernet bag that the main system processing module receives, and obtain the DSL signal that can on the DSL circuit, transmit, and send on the DSL circuit and transmit;
When receiving Packet Service, the DSL integrated circuit board obtains the Ethernet bag to handling from the DSL signal of DSL circuit, and sends to the main system processing module; The main system processing module receives the Ethernet bag that the DSL integrated circuit board transmits.
10. method as claimed in claim 9 is characterized in that, when sending Packet Service, when the main system processing module defines the overload Ethernet bag transmission that exceeds DSL circuit bearing capacity, also comprises:
The main system processing module is sent integrated circuit board to DSL and is sent the binding instruction;
The DSL integrated circuit board is according to the binding instruction that receives, and overload Ethernet bag is cut into slices and carried out the Ethernet bag again and convert the DSL Signal Processing into after the section sign adding in the Ethernet bag after the section;
When the DSL integrated circuit board confirm to be handled the Ethernet bag that obtains and had the section sign, after packaging according to the section sign, the Ethernet bag that will organize again after wrapping sent to the main system processing module.
11. like claim 9 or 10 described methods, it is characterized in that,
The DSL integrated circuit board is handled the Ethernet bag, obtains the DSL signal that can on the DSL circuit, transmit, and specifically comprises:
The Ethernet bag that receives from the main system processing module is carried out the relevant processing of Packet Service logic;
Ethernet bag after handling is carried out DSL framing, coding, modulation obtain the DSL signal;
The DSL integrated circuit board obtains the Ethernet bag to handling from the DSL signal of DSL circuit, specifically comprises:
DSL signal from the DSL circuit is carried out DSL rectification, the processing of decoding reconciliation framing, obtain the Ethernet bag;
The Ethernet bag that obtains is carried out sending to the main system processing module after the Packet Service logic relevant treatment.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145781XA CN102811156A (en) | 2011-06-01 | 2011-06-01 | Packet transport network (PTN) equipment and packet service transmission method |
| PCT/CN2012/074175 WO2012163189A1 (en) | 2011-06-01 | 2012-04-17 | Ptn device and packet service transmission method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110145781XA CN102811156A (en) | 2011-06-01 | 2011-06-01 | Packet transport network (PTN) equipment and packet service transmission method |
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| CN102811156A true CN102811156A (en) | 2012-12-05 |
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| CN201110145781XA Pending CN102811156A (en) | 2011-06-01 | 2011-06-01 | Packet transport network (PTN) equipment and packet service transmission method |
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| CN (1) | CN102811156A (en) |
| WO (1) | WO2012163189A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332567A (en) * | 2000-05-17 | 2002-01-23 | 株式会社美迪林克 | Asymmetrical digital user line cut-in multiplexer and network system using the same |
| CN1578266A (en) * | 2003-06-27 | 2005-02-09 | 因芬尼昂技术股份公司 | Method and apparatus for data packet switching |
| US20050047497A1 (en) * | 1999-05-27 | 2005-03-03 | Infineon Technologies Ag | Ethernet transport over a telephone line |
| US20070014309A1 (en) * | 1999-05-19 | 2007-01-18 | Amit Lewin | System for transporting Ethernet frames over very high speed digital subscriber lines |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8116308B2 (en) * | 2007-05-04 | 2012-02-14 | Ciena Corporation | System and method for providing improved packet traceability |
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2011
- 2011-06-01 CN CN201110145781XA patent/CN102811156A/en active Pending
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2012
- 2012-04-17 WO PCT/CN2012/074175 patent/WO2012163189A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070014309A1 (en) * | 1999-05-19 | 2007-01-18 | Amit Lewin | System for transporting Ethernet frames over very high speed digital subscriber lines |
| US20050047497A1 (en) * | 1999-05-27 | 2005-03-03 | Infineon Technologies Ag | Ethernet transport over a telephone line |
| CN1332567A (en) * | 2000-05-17 | 2002-01-23 | 株式会社美迪林克 | Asymmetrical digital user line cut-in multiplexer and network system using the same |
| CN1578266A (en) * | 2003-06-27 | 2005-02-09 | 因芬尼昂技术股份公司 | Method and apparatus for data packet switching |
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| WO2012163189A1 (en) | 2012-12-06 |
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Application publication date: 20121205 |