CN1863084A - Method for implementing user loop terminal to support multiple managing channels - Google Patents
Method for implementing user loop terminal to support multiple managing channels Download PDFInfo
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Abstract
The invention supplies a method to realize XDSL terminal supporting multi managing channel that includes the following steps: sending message to DSLAM device on at least two kinds of managing channel; after the terminal receiving the identified information returned from DLSAM device, the managing channel sending the identified information would be recorded and the information intercommunication would be taken between the managing channel and the local end DSLAM. The invention realizes the XDSL terminal device supporting multi managing method and improves the compatibility of XDSL terminal.
Description
Technical Field
The invention relates to the technical field of network communication, in particular to a method for realizing that an XDSL (digital subscriber loop) terminal supports various management channels.
Background
With the development of telecommunication networks, more and more users have enjoyed the convenience of broadband to their work, life and entertainment. Among the broadband access technologies, the XDSL technology utilizes the existing twisted pair resources as the transmission medium, and adapts to different customer requirements, develops and forms a plurality of access technologies such as ADSL (asymmetric digital subscriber line), SHDSL (single line-to-high speed digital subscriber line), VDSL (very high speed digital subscriber line), and the like, and has wide application in the global scope and good economic and social benefits.
The application model of ADSL broadband access network is shown in fig. 1. At the CO (Central office) end, DSLAM (digital subscriber line Access multiplexer) equipment provides a twisted pair interface, and terminal equipment ATU _ R (ADSL remote Transmit-receive Unit) is placed at the user side, and the two cooperate to realize the broadband access function. The ATU _ R provides both telephone terminal interface and data terminal interface for the subscriber, and at the CO end, the DSLAM equipment accesses the broadband network through SNI (service network interface), and the analog voice signal of the subscriber's phone accesses the PSTN (public switched telephone network) network through the band separation technique. Due to differences in modulation technology, frequency band division and the like, different XDSL access systems are slightly different from ADSL systems in network application, for example, when VDSL accesses, the transmission distance between the DSLAM on the CO side and the VTU _ R on the user side is short, whereas SHDSL cannot share a line with narrowband analog voice due to baseband transmission, but the broadband access application mode is basically similar.
The NMS (network management system) manages and maintains DSLAM devices in the network. The XDSL terminal device at the user side is used as a link of the broadband access solution to implement specific functions, and also needs the network operator to manage and maintain their working status. The XDSL terminals are numerous and widely distributed, and a perfect solution needs to be provided for management and maintenance of the XDSL terminals in order to effectively operate a broadband network, reduce management and maintenance costs of an operator, and better provide services for broadband users.
As shown in fig. 2, an management and maintenance model of the ADSL access system generally operates SNMP (simple network management protocol) between the NMS and the DSLAM system, and the XDSL terminal device is located at the user side, so at the CO end, the NMS can only collect and report general physical line parameter information at the XTU _ R (XDSL remote transceiver unit) side through the DSLAM system. The management and maintenance functions of the XDSL terminal, the entire system and the UNI (user network interface), can only be implemented locally by the user through the XDSL terminal device to provide the management and maintenance interface for the user, for example, the management is implemented through the RS232 asynchronous serial port and the character protocol such as xmode (modem); or the management and maintenance are realized through a 10Base-T Ethernet interface and through the modes of HTTP (hypertext transfer protocol), Telnet (remote login) and the like.
A schematic diagram of the XDSL terminal device management scheme is shown in fig. 3. The system consists of a terminal equipment management unit, a CO end DSLAM system and XDSL terminal equipment. The scheme comprises the following interfaces:
1. and a management interface between the terminal equipment management unit and the CO end DSLAM system. The interface is located between the terminal equipment management unit and the management entity in the DSLAM equipment, and can realize indirect management of the terminal equipment.
2. Interface between XDSL terminal equipment and CO-side DSLAM. The interface is located between the management entity in DSLAM equipment and the XDSL terminal equipment management entity to realize the transmission of the terminal equipment management information.
3. Interface between a document server and an XDSL terminal device. The interface is located between the file server and the file upgrading entity of the XDSL terminal equipment, and the interface completes the transmission of files and completes the operations of file downloading, software upgrading and the like of user terminal equipment by matching with a terminal equipment management system.
At present, there are two management schemes specifically adopted for XDSL terminal devices.
The first is an EOC (embedded operation channel) based management scheme, and a protocol reference model diagram of the management scheme is shown in fig. 4. When the DSLAM system needs to manage the information of the terminal, the DSLAM device receives a corresponding SNMP message, and the DSLAM device checks that the message is a management message of the terminal, and forwards the SNMP message to the terminal through an HDLC (high-level data link control) channel of the xDSL line by using an SNMP proxy method, and the terminal receives the SNMP message on the HDLC link of the xDSL and performs corresponding processing according to the SNMP message. When the SNMP of the terminal is reported to the terminal management system, the opposite flow is adopted. Since the SNMP is directly established on the HDLC as an application layer, there is no TCP/IP (transmission control protocol/internet protocol) layer and no configuration such as an IP address is required.
The local side DSLAM equipment realizes the management of the ADSL terminal through SNMP. When terminal management is carried out based on SNMP mode, SNMP message is carried on EOC (embedded operation channel) of ADSL, and HDLC is adopted as link layer control protocol. Therefore, as long as the XDSL line is synchronous, the management information interaction between the CO end and the terminal can be realized, the requirements on default configuration data, IP addresses and protocols of the terminal are eliminated, and the aim of configuration-free maintenance is fulfilled.
In this scheme, a software processing flow after the XDSL terminal is started is shown in fig. 5, and includes the following steps:
1. after the XDSL terminal is started, the XDSL terminal actively sends a message to the local side DSLAM equipment to inform the local side equipment that the terminal is started.
2. After the XDSL terminal waits for a period of time, if the confirmation message returned by the central office DSLAM equipment is not received, the XDSL terminal sends the message to the central office DSLAM equipment again.
3. The XDSL terminal receives the confirmation message returned by the local side DSLAM equipment and waits for other messages of the local side DSLAM equipment.
4. If the XDSL terminal receives the query message of the local side DSLAM equipment, the XDSL terminal returns the information of the XDSL terminal according to the query requirement of the local side DSLAM equipment. Such as the version of the terminal software, etc.
5. If the XDSL terminal receives the configuration information of the local side DSLAM equipment, the configuration information is stored in the XDSL terminal nonvolatile memory according to the configuration requirement of the local side DSLAM equipment so as to be used when the XDSL terminal is powered on next time.
The disadvantages of the above EOC-based management scheme are:
1. in the scheme, the terminal can only be used in cooperation with the local side DSLAM device supporting the EOC management, but cannot be used in cooperation with the local side DSLAM device adopting other management modes, so that the application range of the scheme is limited.
2. Since the terminal can only support EOC management, the office device must implement multiple management modes to cooperate with the terminal to implement centralized management of the terminal. For example, in practical application, there are a plurality of terminals with different management modes, and a telecommunications manager must record the terminal type used by a user, which increases the workload of management and maintenance.
Another is a management scheme based on PVC (permanent virtual connection), whose protocol reference model is schematically shown in fig. 6. The XDSL terminal is connected to the local DSLAM device via a specific PVC, for example, VPI ═ 0 and VCI ═ 16, thereby forming a management and maintenance channel.
When the DSLAM system needs to manage the terminal information, the SNMP message is sent to the DSLAM device, the DSLAM checks that the message is the management message of the terminal, the SNMP management message is packaged in a standard IP message by adopting an SNMP proxy method, then the standard IP message is sent to the terminal through an ATM (asynchronous transfer mode) channel, and the terminal receives the SNMP message on the ATM channel and carries out corresponding processing according to the SNMP message. When the SNMP of the terminal is reported to the terminal management system, the opposite flow is adopted. Because SNMP is used as an application layer and is directly established on a specific ATM channel, the connection at the moment is uniquely identified by a port without configuration of IP addresses and the like.
The local side DSLAM equipment realizes the management of the ADSL terminal through SNMP. When terminal management is performed based on the SNMP approach, the SNMP message is carried on a specific ATM channel, since this channel is the default configuration of the terminal device. Therefore, as long as the XDSL line is synchronous, the management information interaction between the CO end and the terminal can be realized, the requirements on default configuration data, IP addresses and protocols of the terminal are eliminated, and the aim of configuration-free maintenance is fulfilled.
In this scheme, the software processing flow after the XDSL terminal is started is the same as the software processing flow of the EOC-based management scheme described above.
The drawbacks of the above PVC-based management scheme are:
1. in the scheme, the terminal can only be used in cooperation with the central office DSLAM device supporting PVC management, but cannot be used in cooperation with the central office DSLAM device adopting other management methods, so that the application range of the scheme is limited.
2. Because the terminal can only support PVC management, the office device must implement multiple management modes to cooperate with the terminal to implement centralized management of the terminal. For example, in practical application, there are a plurality of terminals with different management modes, and a telecommunications manager must record the terminal type used by a user, which increases the workload of management and maintenance.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a method for supporting multiple management channels by an XDSL terminal, so as to enable the XDSL terminal to simultaneously support multiple management modes, and improve the compatibility of the XDSL terminal by performing message interaction between one management channel and a local side DSLAM device.
The purpose of the invention is realized by the following technical scheme:
a method for realizing digital subscriber loop terminal supporting multiple management channels includes steps:
A. after the digital subscriber loop XDSL terminal is started, sending a message to the DSLAM equipment of the local digital subscriber line access multiplexer on at least two management channels supported by the digital subscriber loop XDSL terminal;
B. when the XDSL terminal receives the confirmation message returned by the local side DSLAM equipment, the XDSL terminal records the management channel of the DSLAM equipment for sending the confirmation message, and carries out message interaction with the local side DSLAM equipment through the management channel.
The step A specifically comprises the following steps:
after starting up XDSL terminal, waiting a random time, sending message to DSLAM device on at least two management channels supported by it.
The step A specifically comprises the following steps:
setting the sending times parameter of XDSL terminal, after the XDSL terminal is started, sending message to the local side DSLAM equipment on at least two management channels supported by the XDSL terminal, and adding 1 to the sending times;
or,
setting the sending times parameter of XDSL terminal, after starting XDSL terminal, waiting a random time, sending message to local DSLAM device on at least two management channels supported by XDSL terminal, and adding 1 to the sending times.
The step A specifically comprises the following steps:
a1, XDSL terminal sends message to local side DSLAM device on at least two management channels supported by it, and waits for confirmation message returned by the local side DSLAM device after adding 1 to the sending times;
a2, when the XDSL terminal does not receive the confirmation message returned by the local side DSLAM equipment in the set time, judging whether the sending times reaches the set maximum sending times, if yes, stopping sending the message to the local side DSLAM equipment; otherwise, continuing to send messages to the local side DSLAM device on at least two management channels supported by the local side DSLAM device simultaneously, and adding 1 to the sending times.
The XDSL terminal includes: asymmetric digital subscriber loop ADSL subscriber terminal or single line pair high speed digital subscriber loop SHDSL subscriber terminal.
The management channel comprises: an embedded operation channel EOC and a permanent virtual connection channel PVC.
The step B specifically comprises the following steps:
when the XDSL terminal receives the confirmation message returned by the local side DSLAM equipment through a certain management channel, the management channel is recorded as visible, and then the XDSL terminal carries out message interaction with the local side DSLAM equipment through the management channel.
The step B specifically comprises the following steps:
when the XDSL terminal receives the query message sent by the local side DSLAM equipment, the management channel of the query message sent by the local side DSLAM equipment is recorded, and corresponding query result information is returned to the local side DSLAM equipment through the recorded management channel according to the query requirement of the local side DSLAM equipment.
The step B specifically comprises the following steps:
when the XDSL terminal receives the configuration message sent by the local side DSLAM equipment, the management channel of the configuration message sent by the local side DSLAM equipment is recorded, the configuration information carried in the received message is stored in the nonvolatile memory of the XDSL terminal according to the configuration requirement of the local side DSLAM equipment, and a response message is returned to the local side DSLAM equipment through the recorded management channel.
It can be seen from the above technical solutions that, in the present invention, after the XDSL terminal is started, the XDSL terminal simultaneously sends a start message to the central office DSLAM device on a plurality of management channels supported by the central office DSLAM device, and then records channel information of a response message sent by the central office DSLAM device. Compared with the prior art, the method has the following advantages:
1. the XDSL terminal equipment can simultaneously support various management channels, and the message interaction is carried out between the management channel and the local side DSLAM equipment, so that the compatibility of the XDSL terminal is improved. The local side DSLAM equipment only needs to support one management channel, thereby reducing the development work of DSLAM and the complexity of equipment.
2. The XDSL terminal has the self-learning function of a management channel, can be matched with all local sides for use, has good universality and reduces the maintenance workload of managers of telecommunication equipment.
3. The XDSL terminal has the function of sending the starting message to the local side DSLAM equipment for a plurality of times at regular time after being started, thereby improving the possibility that the local side DSLAM equipment correctly processes the terminal starting message. The situation that the terminal is considered to be abnormal due to the fact that the starting message of the XDSL terminal cannot be processed because the local side DSLAM equipment is busy is avoided.
4. Because the time for waiting for retransmitting the start message is the time generated by the random algorithm, the situation that the DSLAM receives a large amount of messages instantly when a user is in a power-on peak, for example, after work hours, area power failure, power restoration and the like, so that the performance of the local side DSLAM equipment is influenced can be avoided. The situation of message loss is reduced.
5. The XDSL terminal has the function of sending the starting information with set times to the local side DSLAM equipment after being started. The DSLAM can avoid receiving a large amount of messages instantly when a user is in a power-on peak, such as during off-duty time, after regional power failure, power supply recovery and the like, thereby influencing the performance of the local side DSLAM equipment.
Drawings
Fig. 1 is a schematic diagram of an application model of an ADSL broadband access network;
fig. 2 is a schematic diagram of an administration and maintenance model of an ADSL access system;
FIG. 3 is a schematic diagram of reference model for XDSL terminal equipment management;
FIG. 4 is a schematic diagram of a protocol reference model for an EOC based management scheme;
FIG. 5 is a flow chart of software processing after an XDSL terminal is started in an EOC-based management scheme;
FIG. 6 is a schematic diagram of a protocol reference model for a PVC-based management scheme;
FIG. 7 is a schematic diagram of a protocol reference model of the method of the present invention;
fig. 8 is a flow chart of software processing after the XDSL terminal is started in a specific implementation manner of the method of the present invention.
Detailed Description
The invention provides a method for realizing that an XDSL terminal supports various management channels, the core of the invention is as follows: after the XDSL terminal is started, the XDSL terminal simultaneously sends a starting message to the local side DSLAM equipment on various management channels supported by the XDSL terminal, and then records channel information of a response message sent by the local side DSLAM equipment.
The method of the present invention is described below by taking an example in which an XDSL terminal supports both EOC and PVC channels.
When the XDSL terminal device supports both the EOC channel and the PVC channel, the local side DSLAM device only needs to implement the EOC channel or the PVC channel, and according to the management mode of the local side DSLAM device, it needs to automatically select a corresponding management channel in the XDSL terminal device, and a corresponding protocol reference model is shown in fig. 7. In this model, the local side DSLAM device implements the EOC channel.
The current xDSL terminal already supports EOC and PVC channels without adding new hardware. The present invention needs to add a learning process of managing channels in the XDSL terminal device, and at the same time, in order to provide the management processing capability of the DSLAM device, the XDSL terminal device needs to optimize the management process.
In a specific implementation manner of the present invention, a software processing flow after the XDSL terminal is started is shown in fig. 8, and includes the following steps:
step 1, after the XDSL terminal is started, after waiting for T1, the XDSL terminal sends a message to the central office DSLAM device through the EOC channel and the PVC channel, notifies the central office DSLAM device that the XDSL terminal device has been started, adds one to the number of sending N1, and waits for an acknowledgement message from the central office DSLAM device.
The waiting time T1 is a random time length generated by a random algorithm. The sending times N1 is the sending times parameter of the XDSL terminal.
Step 2: after waiting for a preset time T2, the XDSL terminal judges whether an acknowledgement message of the local side DSLAM equipment response is received, if so, the step 4 is executed; otherwise, step 3 is executed.
And step 3: the XDSL terminal judges whether the sending times N1 reach the set maximum sending times N2, if not, the step 1 is executed, the message is sent again, and meanwhile, the testing times N1 is added by one; otherwise, the XDSL terminal no longer sends the message to the central office DSLAM device, waits for another message sent by the central office DSLAM device, and executes step 5.
And 4, step 4: if the XDSL terminal receives the confirmation message sent by the local side DSLAM equipment, the management channel information of the confirmation message sent by the DSLAM equipment is recorded, namely, whether the management channel is an EOC channel or a PVC channel is recorded, and then other messages sent by the local side DSLAM equipment are waited. Step 5 is performed.
And 5: when the XDSL terminal receives the query message sent by the DSLAM device, the management channel through which the DSLAM device sends the query message is recorded, and according to the query requirement of the DSLAM device, information of the XDSL terminal device, such as the version of the terminal software, is returned to the DSLAM device through the recorded management channel.
When the XDSL terminal receives the configuration message sent by the DSLAM equipment, the management channel of the DSLAM equipment for sending the configuration message is recorded, and the configuration information carried in the received message is stored in the nonvolatile memory of the XDSL terminal according to the configuration requirement of the DSLAM equipment, so that the XDSL terminal equipment can be used when being electrified next time. Then, a response message is returned to the DSLAM equipment through the recorded management channel.
The above describes the implementation scheme of the XDSL terminal supporting both PVC and EOC management modes, but according to the similar processing flow described above. The XDSL terminal can simultaneously support various management channels.
The XDSL terminal described in the above-mentioned flow of the present invention includes, but is not limited to, an ADSL user terminal, and an SHDSL user terminal. Other subscriber terminals, such as VDSL subscriber terminals, VDSL2 subscriber terminals and PON (passive optical network) subscriber terminals, may all be managed using this similar scheme.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A method for realizing a digital subscriber loop terminal supporting a plurality of management channels, comprising the steps of:
A. after the digital subscriber loop XDSL terminal is started, sending a message to the DSLAM equipment of the local digital subscriber line access multiplexer on at least two management channels supported by the digital subscriber loop XDSL terminal;
B. when the XDSL terminal receives the confirmation message returned by the local side DSLAM equipment, the XDSL terminal records the management channel of the DSLAM equipment for sending the confirmation message, and carries out message interaction with the local side DSLAM equipment through the management channel.
2. The method according to claim 1, wherein the step a specifically comprises:
after starting up XDSL terminal, waiting a random time, sending message to DSLAM device on at least two management channels supported by it.
3. The method according to claim 1, wherein the step a specifically comprises:
setting the sending times parameter of XDSL terminal, after the XDSL terminal is started, sending message to the local side DSLAM equipment on at least two management channels supported by the XDSL terminal, and adding 1 to the sending times;
or,
setting the sending times parameter of XDSL terminal, after starting XDSL terminal, waiting a random time, sending message to local DSLAM device on at least two management channels supported by XDSL terminal, and adding 1 to the sending times.
4. The method according to claim 3, wherein the step A specifically comprises:
a1, XDSL terminal sends message to local side DSLAM device on at least two management channels supported by it, and waits for confirmation message returned by the local side DSLAM device after adding 1 to the sending times;
a2, when the XDSL terminal does not receive the confirmation message returned by the local side DSLAM equipment in the set time, judging whether the sending times reaches the set maximum sending times, if yes, stopping sending the message to the local side DSLAM equipment; otherwise, continuing to send messages to the local side DSLAM device on at least two management channels supported by the local side DSLAM device simultaneously, and adding 1 to the sending times.
5. The method according to claim 1, wherein the XDSL terminal comprises: asymmetric digital subscriber loop ADSL subscriber terminal or single line pair high speed digital subscriber loop SHDSL subscriber terminal.
6. The method of claim 1, wherein managing the channel comprises: an embedded operation channel EOC and a permanent virtual connection channel PVC.
7. The method according to claim 1, 2, 3, 4, 5 or 6, wherein the step B specifically comprises:
when the XDSL terminal receives the confirmation message returned by the local side DSLAM equipment through a certain management channel, the management channel is recorded as visible, and then the XDSL terminal carries out message interaction with the local side DSLAM equipment through the management channel.
8. The method according to claim 7, wherein the step B specifically comprises:
when the XDSL terminal receives the query message sent by the local side DSLAM equipment, the management channel of the query message sent by the local side DSLAM equipment is recorded, and corresponding query result information is returned to the local side DSLAM equipment through the recorded management channel according to the query requirement of the local side DSLAM equipment.
9. The method according to claim 7, wherein the step B specifically comprises:
when the XDSL terminal receives the configuration message sent by the local side DSLAM equipment, the management channel of the configuration message sent by the local side DSLAM equipment is recorded, the configuration information carried in the received message is stored in the nonvolatile memory of the XDSL terminal according to the configuration requirement of the local side DSLAM equipment, and a response message is returned to the local side DSLAM equipment through the recorded management channel.
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| CN2005101352973A CN100407658C (en) | 2005-12-29 | 2005-12-29 | Method for implementing user loop terminal to support multiple managing channels |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008131632A1 (en) * | 2007-04-30 | 2008-11-06 | Alcatel Lucent | Method and apparatus for supporting user terminal to access network in the fixed access network |
| 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 |
| WO2011143874A1 (en) * | 2010-05-20 | 2011-11-24 | 中兴通讯股份有限公司 | Method, home gateway and system for controlling digital subscriber line terminal to access network |
| CN101764901B (en) * | 2008-12-26 | 2012-05-23 | 中国电信股份有限公司 | Implementation system, equipment and method for convergence sharing of digital user line port |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5535198A (en) * | 1994-06-03 | 1996-07-09 | At&T Corp. | ISDN basic rate interface central office station terminal emulator for customer premises equipment |
| US5889470A (en) * | 1996-12-24 | 1999-03-30 | Paradyne Corporation | Digital subscriber line access device management information base |
| US6085245A (en) * | 1997-07-24 | 2000-07-04 | Paradyne Corporation | System and method for the implicit support of IP subnetworks |
| US6580727B1 (en) * | 1999-08-20 | 2003-06-17 | Texas Instruments Incorporated | Element management system for a digital subscriber line access multiplexer |
| CN1538666A (en) * | 2003-04-14 | 2004-10-20 | 华为技术有限公司 | xDSL terminal equipment management system |
-
2005
- 2005-12-29 CN CN2005101352973A patent/CN100407658C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008131632A1 (en) * | 2007-04-30 | 2008-11-06 | Alcatel Lucent | Method and apparatus for supporting user terminal to access network in the fixed access network |
| CN101299868B (en) * | 2007-04-30 | 2014-10-08 | 上海贝尔股份有限公司 | Method and device for supporting subscriber terminal to access network in fixed access network |
| 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 |
| CN101764901B (en) * | 2008-12-26 | 2012-05-23 | 中国电信股份有限公司 | Implementation system, equipment and method for convergence sharing of digital user line port |
| WO2011143874A1 (en) * | 2010-05-20 | 2011-11-24 | 中兴通讯股份有限公司 | Method, home gateway and system for controlling digital subscriber line terminal to access network |
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| CN100407658C (en) | 2008-07-30 |
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