CN1553658A - ADSL modulator-demodulator unit by automatic inserting technology - Google Patents
ADSL modulator-demodulator unit by automatic inserting technology Download PDFInfo
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- CN1553658A CN1553658A CNA200310109534XA CN200310109534A CN1553658A CN 1553658 A CN1553658 A CN 1553658A CN A200310109534X A CNA200310109534X A CN A200310109534XA CN 200310109534 A CN200310109534 A CN 200310109534A CN 1553658 A CN1553658 A CN 1553658A
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Abstract
This invention provides a ADSL modem applied in communication wideband system. Based on the generic ADSL modem it adds virtual circuit automatic configuration module, PPPoE customer side module, IP Relay module, DHCP module and traffic control module. Its hardware adopts CX82310 chip. By using software to implement flush type operation system adopting Vx Word. The invention can replace traditional ADSL modem, and users on longer need to make any configuration and install PPPoE customer side software.
Description
Technical field
The invention belongs to the telecommunication technology field, be specifically related to the ADSL Modem in a kind of communication network wideband data access service.
Background of invention
At present, in communication network wideband data access service, when ADSL Modem was used, the overwhelming majority adopted the PPPoE dial-up access.During the PPPoE dial-up access, generally to user's ADSL Modem and computer all be provided with, to ADSL Modem, virtual circuit must be set, and ADSL Modem is arranged to RFC1483 bridge joint mode; To user's computer, the client software of a PPPoE must be installed, be used for the PPPoE establishment of connection, obtain publicly-owned a, legal IP address from the access authentication server of network terminal, ADSL user uses this IP address access the Internet network (Internet) that obtains.Its process as shown in Figure 1.
This use pattern, brought two problems:
1, virtual circuit to be set in ADSL Modem.Because the virtual circuit parameter difference of the ADSL local side of different manufacturers has brought very big trouble for the installation personnel of user and telecommunications.
2, a pppoe client software need be installed on user's PC.After this software is installed, because the difference of the operating system of PC can produce software compatibility issue, thereby the fuzzy problem of a series of technical support and professional interface appears; On the other hand, when the user ran into PC operating system and reinstalls, increases or delete software and hardware, computer virus, needing telecommunications company was that it reinstalls pppoe client software.Because the current domestic network user's technical merit is limited, telecommunications company need keep a huge technical support troop, has increased very big operating cost to telecommunications company.Simultaneously, also, make ADSL user must use specific hardware and operating system, limited some users' of specific group development because the compatibility issue of client software is installed.
To first problem, mainly adopt the method that many virtual circuits are set in ADSL Modem to solve at present, but the data throughout that influence ADSL Modem is understood in being provided with of many virtual circuits, has limited user's networking speed.To second problem, the method of the built-in PPPoE dialer software+NAT of main at present employing ADSL Modem solves, but the built-in dialer software of general ADSL Modem can not coexist with many virtual circuits, and the method for built-in dialer software+NAT is in use because problems such as port mapping, some games on line and audio frequency and video are used and are restricted, and therefore can't promote.
Summary of the invention
The objective of the invention is to propose a kind of ADSL Modem, these problems are solved in this ADSL Modem, thereby make things convenient for the client, reduce the operating cost of technical management department at the problem in the above-mentioned communication network wideband data access service.
The ADSL Modem that the present invention proposes is based on present common ADSL Modem, increases following 5 kinds of functional modules again:
1, virtual circuit is provided with module automatically,
2, pppoe client module,
3, IP Relay module,
4, DHCP module,
5, flow-control module.
It mainly is that a different set of virtual circuit value is set in modulator-demodulator that virtual circuit is provided with module automatically, after modulator-demodulator starts, if current PVC value and local side are inconsistent, then take turns successively and seek according to the value of one group of virtual circuit setting, find parameter with ADSL local side coupling, by this parameter operation, and preserve this parameter, use when holding start in order to next.By the automatic coupling and the setting of virtual circuit, save the trouble that virtual circuit artificially is set like this.
The pppoe client module mainly be to initiate PPPoE to connect and obtain an available IP address.It at first initiates the PPP request to access server, after obtaining access server corresponding, carry out the authentication of username and password, authentication just can obtain a legal IP address from access server side by the back, and the user can use this IP address to obtain the Internet service.This functional block of this program is the same with the client software function of installing on PC, but is integrated in the ADSL Modem software inhouse, thus irrelevant with user's PC, there is not the Compatibility of Operating System problem, can not be subjected to virus attack yet.Because this functional block makes the user not need to install specific client software again, thereby provide great convenience for the user.
But the IP address that this modulator-demodulator obtained can not directly be used by PC, and the IP address that wants pppoe client is obtained can directly be used by PC institute, and the simplest direct method of the present invention is to adopt the DHCP agreement.
Even this modulator-demodulator can be accepted the DHCP agreement request, also the available address in the IP address pool dynamically must be distributed to PC and be used.Among the present invention, IP Relay module is put into dhcp address pool with the resulting IP of pppoe client address exactly.
Because some user is according to the surf time charge, so when the user did not surf the Net, this modulator-demodulator was answered the automatic disconnection dial-up connection, this mainly controls by flow judging and realizes.The time interval that a default disconnection PPP connects in this modulator-demodulator, (this can be set by user oneself at interval, optional in 1 second-1 hour), when determining user PC, this modulator-demodulator surpasses when still not sending the request of Ethernet data bag this blanking time, promptly by user's processing of no longer surfing the Net, disconnect dial-up connection, and when the user surfed the Net, in a single day the user sent the request of Ethernet data bag, " rasse " dials immediately, rebulids connection.Owing to adopt DHCP Relay mode,, the DHCP request data package filtered out so also must analyze to the Ethernet data bag.
A complete ADSL user's last network process as shown in Figure 3.
Use ADSL Modem of the present invention to substitute traditional ADSL Modem, user's ADSL Modem need not carried out any setting, user's computer does not need to install pppoe client software yet, make technical problem in the present ADSL business obtain the solution of essence, along with the popularization of business, a revolution of ADSL business field will be brought.
Description of drawings
Fig. 1 illustrates for the process of using existing ADSL Modem,
Fig. 2 illustrates for the process of using ADSL Modem of the present invention,
Fig. 3 illustrates for the online process of using ADSL Modem of the present invention,
Fig. 4 is a hardware block diagram of the present invention,
Fig. 5 is a software block diagram of the present invention.
Embodiment
The invention is further illustrated by the following examples.
Hardware is realized
The hardware of ADSL Modem of the present invention is based on the CX82310 chip of Conexant company and realizes, its hardware principle block diagram as shown in Figure 4.Among Fig. 4, the CX82310 chip is the acp chip of this modulator-demodulator, mainly carries out functions such as AFE (analog front end) signal processing, high-speed AD/DA conversion, ADSL signal are resolved, procotol processing, modulator-demodulator control; Transmission/reception mixed bridge-circuit mainly is that the signal sendaisle of ADSL and signal receive path are integrated, and transmits by telephone wire; And other circuit mainly are peripheral interfaces, for it provides needed signal of collaborative work and resource.
At first arrive transmission/reception mixed bridge-circuit from the ADSL signal on the telephone line from isolating transformer, through filter transmission and received signal are separated, transmission and received signal enter the reception and the transmit amplifier of CX82310 chip respectively, after amplifying, carry out high-speed AD/DA, convert digital signal to, through signal processing, obtain the ADSL Frame again.
Processor among the CX82310 is handled the ADSL data, carries out ADSL, ATM and Ethernet protocol simultaneously and handles, and provides Ethernet interface and subscriber computer to carry out data communication.
ADSL Modem involved in the present invention mainly is that software section at the processor of CX82310 adds the respective modules that embodies above-mentioned five kinds of technology and realizes.
Software is realized
The software of ADSL Modem of the present invention is based on the VxWorks embedded OS and realizes, mainly be to add virtual circuit compositions such as module, pppoe client module, DHCP module, IP Relay module, flow-control module are set automatically in original software module, software flow relevant with the technology of the present invention and block diagram are as shown in Figure 5.Its workflow is as follows:
Behind the ADSL Modem electrifying startup, system at first carries out self check, detects the ADSL signal then, setting up ADSL connects, by user's configuration mode of operation is set, carries out data and transmit, this part does not have much differences with the operation principle and the flow process of the ADSL Modem of routine.
After having set up the ADSL connection, the ADSL Modem of the automatic access technology of employing that this paper relates to judges at once whether the virtual circuit value of modulator-demodulator mates with local side, if do not match, then from the virtual circuit table of initial configuration file, obtain the virtual circuit tabulation, take turns successively according to the value of this group virtual circuit of setting then and seek, find the parameter of mating, by this parameter operation with the ADSL local side, and preserve this parameter, use when holding start in order to next.
After the virtual circuit parameter was set up, in case the user uses online software, the pppoe client module was started working, at first initiate the PPP request to access server, carry out the authentication of username and password, authentication just can obtain a legal IP address from access server side by the back, for user's use of surfing the Net.
After the pppoe client running software obtains the IP address, modulator-demodulator is put into the dhcp address pool of modulator-demodulator with the resulting IP of pppoe client software address, by IP Relay module the available address in the IP address pool is dynamically distributed to PC and uses.
Arrive this, the user just can surf the Net by modulator-demodulator.
After this, modulator-demodulator has just entered flow-control module, this moment, it judged user's Ethernet data flow always, surpass when still not sending the request of Ethernet data bag default blanking time when determining user PC, promptly by user's processings of no longer surfing the Net, disconnection dial-up connection, and when the user surfs the Net again, in a single day the user sends the request of Ethernet data bag, and modulator-demodulator dials immediately, rebulids PPPoE and connects.
Owing to adopt DHCP Relay mode, so when carrying out flow control, also must analyze, the DHCP request data package is filtered out the Ethernet data bag, realize flow control function thus.
Claims (6)
1, a kind of ADSL Modem based on present common ADSL Modem, is characterized in that also being added with following 5 kinds of functional modules:
(1) virtual circuit is provided with module automatically, (2) pppoe client module, (3) IP Relay module, (4) DHCP module, (5) flow-control module.
2, modulator-demodulator according to claim 1, it is characterized in that it is that a different set of virtual circuit value is set that described virtual circuit is provided with module automatically in modulator-demodulator, after modulator-demodulator starts, if current PVC value and local side are inconsistent, then take turns successively and seek, find the parameter of mating, by this parameter operation with the ADSL local side according to the value of one group of virtual circuit setting, and preserve this parameter, use when holding start in order to next.
3, modulator-demodulator according to claim 1 is characterized in that described pppoe client module is to initiate the PPPoE connection and obtain an available IP address.
4, modulator-demodulator according to claim 1 is characterized in that described DHCP module is that the IP address that pppoe client is obtained is directly used by PC.
5, modulator-demodulator according to claim 1 is characterized in that described IP Relay module is that dhcp address pool is put in the IP address of pppoe client gained.
6, modulator-demodulator according to claim 1 is characterized in that described flow-control module when determining user PC certain hour when not sending the request of Ethernet data bag at interval, by user's processings of no longer surfing the Net, disconnection dial-up connection; When the user surfed the Net, in case send the request of Ethernet data bag, modulator-demodulator dialled immediately, rebulids connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200310109534XA CN1553658A (en) | 2003-12-18 | 2003-12-18 | ADSL modulator-demodulator unit by automatic inserting technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200310109534XA CN1553658A (en) | 2003-12-18 | 2003-12-18 | ADSL modulator-demodulator unit by automatic inserting technology |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102137153A (en) * | 2011-02-16 | 2011-07-27 | 大唐移动通信设备有限公司 | Method, equipment and system of remote-control communication equipment |
| WO2011140699A1 (en) * | 2010-05-10 | 2011-11-17 | 中兴通讯股份有限公司 | Dialing control method and customer premise equipment using point to point protocol over ethernet mode |
| CN101640596B (en) * | 2008-07-31 | 2012-05-23 | 鸿富锦精密工业（深圳）有限公司 | Modulator-demodulator and configuration method thereof |
-
2003
- 2003-12-18 CN CNA200310109534XA patent/CN1553658A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101640596B (en) * | 2008-07-31 | 2012-05-23 | 鸿富锦精密工业（深圳）有限公司 | Modulator-demodulator and configuration method thereof |
| WO2011140699A1 (en) * | 2010-05-10 | 2011-11-17 | 中兴通讯股份有限公司 | Dialing control method and customer premise equipment using point to point protocol over ethernet mode |
| CN102137153A (en) * | 2011-02-16 | 2011-07-27 | 大唐移动通信设备有限公司 | Method, equipment and system of remote-control communication equipment |
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