Ethernet-based digital subscriber line methods and systems

• US 20040005039A1
• Filed: 07/08/2002
• Published: 01/08/2004
• Est. Priority Date: 07/08/2002
• Status: Active Grant

• Current Assignee: AT&T Intellectual Property I LP (AT&T, Inc.)
• Original Assignee: SBC Properties, L.P.
• Inventors: White, Russell William, Russell, Alicia Marie, Mueller, Stephen Mark, Ansari, Ahmad, Nadaralah, Dinesh, Yuan, Chin, Chen, Weijing
• Granted Patent: US 6,785,265 B2
• Time in Patent Office: Days
• US Class Current: 379/93.01
• CPC Class Codes: H04L 12/2801 Broadband local area networks
• CPC Class Codes: H04L 12/462 LAN interconnection over a bridge based backbone
• CPC Class Codes: H04L 12/4633 Interconnection of networks using encapsulation techniques, e.g. tunneling
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data

Abstract

A digital subscriber line access network comprises a remote Ethernet device disposed in a serving area interface. The remote Ethernet device serves as an Ethernet bridge for a neighborhood service area. The remote Ethernet device communicates with a plurality of customer premises modems in the neighborhood service area using an Internet Protocol over an Ethernet standard with a digital subscriber line physical layer. An Ethernet switch disposed at a central office communicates with the remote Ethernet device via a fiber optic medium using an Internet Protocol over a second Ethernet standard. The Ethernet switch provides a packet data core network termination.

Claims

1. A digital subscriber line access network comprising:

a remote Ethernet device disposed in a serving area interface (SAI), the remote Ethernet device to serve as an Ethernet bridge for a neighborhood service area, the remote Ethernet device to communicate with a plurality of customer premises modems in the neighborhood service area using an Internet Protocol over an Ethernet standard with a digital subscriber line physical layer.

2. The digital subscriber line access network of claim 1 wherein the remote Ethernet device and the SAI are located on an easement.

3. The digital subscriber line access network of claim 1 wherein the SAI comprises a ground-level utility box, and wherein the remote Ethernet device is disposed in the ground-level utility box.

4. The digital subscriber line access network of claim 1 wherein the SAI comprises a box on a utility pole, and wherein the remote Ethernet device is disposed in the box on the utility pole.

5. The digital subscriber line access network of claim 1 wherein the SAI comprises an underground utility box, and wherein the remote Ethernet device is disposed in the underground utility box.

6. The digital subscriber line access network of claim 1 wherein the Ethernet standard comprises a Twisted Ethernet standard, and wherein the remote Ethernet device is to communicate with at least two of the customer premises modems by a corresponding twisted pair line.

7. The digital subscriber line access network of claim 1 wherein the Ethernet standard comprises a Twisted Ethernet standard, and wherein the remote Ethernet device is to communicate with at least two of the customer premises modems by a corresponding twisted pair telephone service line.

8. The digital subscriber line access network of claim 1 wherein the remote Ethernet device comprises an interface to communicate with an Ethernet switch via a fiber optic medium using an Internet Protocol over a second Ethernet standard.

9. The digital subscriber line access network of claim 8 wherein the second Ethernet standard comprises a gigabit Ethernet standard.

10. The digital subscriber line access network of claim 1 wherein the digital subscriber line physical layer is based on at least one of Data Over Cable Service Interface Specifications (DOCSIS), Asymmetric Digital Subscriber Line (ADSL), Very-high-data-rate Digital Subscriber Line (VDSL), Symmetrical Digital Subscriber Line (SDSL), and Multirate Digital Subscriber Line (MDSL).

11. The digital subscriber line system of claim 1 wherein the remote Ethernet device comprises a first removable line card and a second removable line card, the first removable line card providing an F1 interface, the second removable line card providing an F2 interface.

12. A digital subscriber line system comprising:

a first remote Ethernet device to serve as an Ethernet bridge for a first neighborhood service area, the first remote Ethernet device to communicate with a plurality of customer premises modems in the first neighborhood service area using an Internet Protocol over a first Ethernet standard with a digital subscriber line physical layer; and

an Ethernet switch disposed at a central office, the Ethernet switch to communicate with the first remote Ethernet device via a fiber optic medium using an Internet Protocol over a second Ethernet standard, the Ethernet switch to provide a packet data core network termination.

13. The digital subscriber line system of claim 12 further comprising:

a second remote Ethernet device to serve as an Ethernet bridge for a second neighborhood service area, the second remote Ethernet device to communicate with a plurality of customer premises modems in the second neighborhood service area using the Internet Protocol over the first Ethernet standard with the digital subscriber line physical layer;

wherein the Ethernet switch is to communicate with the second remote Ethernet device via a fiber optic medium using the Internet Protocol over the second Ethernet standard.

14. The digital subscriber line system of claim 12 wherein the first Ethernet standard comprises a Twisted Ethernet standard, and wherein the first remote Ethernet device is to communicate with at least two of the customer premises modems by a corresponding twisted pair line.

15. The digital subscriber line system of claim 12 wherein the first Ethernet standard comprises a Twisted Ethernet standard, and wherein the first remote Ethernet device is to communicate with at least two of the customer premises modems by a corresponding twisted pair telephone service line.

16. The digital subscriber line system of claim 12 wherein the second Ethernet standard comprises a gigabit Ethernet standard.

17. The digital subscriber line system of claim 12 wherein the digital subscriber line physical layer is based on at least one of Data Over Cable Service Interface Specifications (DOCSIS), Asymmetric Digital Subscriber Line (ADSL), Very-high-data-rate Digital Subscriber Line (VDSL), Symmetrical Digital Subscriber Line (SDSL), and Multirate Digital Subscriber Line (MDSL).

18. The digital subscriber line system of claim 12 wherein the Ethernet switch is to switch packets between first remote Ethernet device and at least one asynchronous transfer mode (ATM) switch, at least one remote access server (RAS), and at least one Internet Service Provider (ISP).

19. A method of providing an Ethernet-based digital subscriber line (DSL) service, the method comprising:

installing a remote Ethernet device in a neighborhood service area, the remote Ethernet device to serve as an Ethernet bridge for Ethernet-based DSL subscribers in the neighborhood service area; and

pre-wiring a plurality of customer premises in the neighborhood service area to the remote Ethernet device, the customer premises including a customer premise which is a non-subscriber to the Ethernet-based DSL service.

20. The method of claim 19 further comprising:

receiving a request of the Ethernet-based DSL service for the customer premise after said pre-wiring; and

activating the Ethernet-based DSL service for the customer premise based on the request.

21. The method of claim 20 wherein a telecommunication company provides the Ethernet-based DSL service and another mode of Internet access, wherein the customer premise is an existing customer of the telecommunication company for the other mode of Internet access at a time of said receiving the request.

22. The method of claim 21 wherein the request is received from the customer premise via the other mode of Internet access.

23. The method of claim 21 wherein the other mode of Internet access is another DSL service.

24. The method of claim 21 wherein the other mode of Internet access is a dial-up service.

25. The method of claim 20 further comprising providing an Ethernet-based DSL modem to the customer premise based on the request.

26. The method of claim 19 wherein said pre-wiring comprises contemporaneously pre-wiring all of the customer premises in the neighborhood service area to the remote Ethernet device.

27. The method of claim 19 wherein said pre-wiring comprises pre-wiring substantially all customer premises in the neighborhood service area to the remote Ethernet device.

28. The method of claim 19 wherein said pre-wiring comprises connecting an existing telephone line for each of the customer premises to the remote Ethernet device.

29. The method of claim 19 further comprising linking the remote Ethernet device to an Ethernet switch by a fiber optic link.

30. The method of claim 29 wherein the fiber optic link comprises one or more unused fibers in a pre-existing bundle of fiber between a serving area interface (SAI) and a central office.

31. The method of claim 29 wherein said linking comprises installing a fiber optic link between the remote Ethernet device and the Ethernet switch.

32. The method of claim 29 wherein said linking comprises:

installing a fiber optic link between the remote Ethernet device and a closest point of existing fiber;

splicing the fiber optic link to the existing fiber; and

connecting the existing fiber to the Ethernet switch.