Home phone line network architecture

• US 6,868,072 B1
• Filed: 03/15/2000
• Issued: 03/15/2005
• Est. Priority Date: 03/19/1999
• Status: Expired due to Term

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Broadcom Corporation (Broadcom, Inc.)
• Inventors: Carr, Jeffrey D., Lin, Thuji Simon
• Primary Examiner(s): Qureshi, Afsar
• Application Number:
  US09/525,872
• Time in Patent Office: 1,826 Days
• Field of Search: 370/351, 370/352, 370/282, 370/295, 370/276, 370/294, 370/431, 370/430, 370441-443, 370464-467, 370/469, 370/471, 370478-480, 370481-488, 370/490, 370/401
• US Class Current: 370/276
• CPC Class Codes: H04L 12/2803 Home automation networks
• CPC Class Codes: H04L 12/2838 Distribution of signals within a home automation network, e.g. involving splitting/multiplexing signals to/from different paths adaptations of television systems for transmission by electric cable for domestic distribution H04N7/106; hybrid transport H04L12/6418; home network arrangements specially adapted for distribution of digital video signals H04N7/24
• CPC Class Codes: H04M 11/062 using different frequency bands for speech and other data

Abstract

Home phone line network devices, conforming to different versions of the standards, are interconnected and interoperable on a UTP transmission medium. Higher order devices support an overlaid dual logical network structure which allows two pairs of higher order devices to communicate simultaneously using two separate frequency bands. A higher order node contains a high speed PHY, a low speed PHY, and either a high and low order MAC or an enhanced MAC capable of supporting dual frequency band transmission, thereby enhancing total system throughput to the sum of the throughputs of each logical network.

Claims

1. A system for establishing a plurality of logical networks over a common unshielded twisted pair communication medium, comprising:

a first frequency band associated with a first communication protocol;

a second frequency band associated with a second communication protocol;

a first pair of bidirectional communication nodes;

a second pair of bidirectional communication nodes, each node of both the first and second pairs having a first physical layer device configured to operate in accordance with the first communication protocol and a second physical layer device configured to operate in accordance with the second communication protocol; and

wherein the first pair of nodes communicates with one another through their respective first physical layer devices over the first frequency band, and wherein the second pair of nodes simultaneously communicates with one another through their respective second physical layer devices over the second frequency band.

2. The system according to claim 1, each node further comprising:

medium access layer means for establishing communication over the unshielded twisted pair communication medium in accordance with the first and second communication protocols; and

wherein each network node being capable of bidirectionally communicating over the unshielded twisted pair communication medium using either the first or second communication protocols independently.

3. The system according to claim 2, wherein the first communication protocol is characterized by a first particular data rate, and wherein the second communication protocol is characterized by a second particular data rate greater than the first data rate.

4. The system according to claim 3, wherein the first frequency band occupies a first portion of a frequency spectrum, and wherein the second frequency band occupies a second portion of the frequency spectrum higher than the first portion.

5. The system according to claim 4, further comprising:

a third frequency band; and

wherein a pair of bidirectional communication nodes being capable of establishing communication over the unshielded twisted pair communication medium through their respective second physical layer devices over the third frequency band.

6. The system according to claim 5, wherein the third frequency band overlaps the first and second frequency bands.

7. The system according to claim 5, wherein the third frequency band is contained within the first frequency band.

8. The system according to claim 5, wherein a pair of bidirectional communication nodes establish communication over the unshielded twisted pair communication medium through their respective second physical layer devices over the third frequency band in accordance with the first communication protocol.

9. In a bidirectional communication device of the type adapted to communicate information over an unshielded twisted pair communication medium, a network node system comprising:

a first physical layer device configured to transmit and receive information modulated in accordance with a first communication standard;

a second physical layer device configured to transmit and receive information modulated in accordance with a second communication standard;

medium access layer means for establishing communication over the unshielded twisted pair communication medium in accordance with first and second communication protocols; and

wherein the network node being capable of bidirectionally communicating over the unshielded twisted pair communication medium using either the first or second communication protocols independently.

10. The local area network node system in accordance with claim 9, further comprising:

a first frequency band associated with the first communication protocol;

a second frequency band associated with the second communication protocol; and

wherein the medium access layer means bidirectionally communicating over the unshielded twisted pair communication medium using either the first or second frequency bands independently.

11. The local area network node system in accordance with claim 10, wherein the first physical layer device communicates information in accordance with the first communication standard over the first frequency band, and wherein the second physical layer device communicates information in accordance with the second communication standard over the second frequency band.

12. The local area network node system in accordance with claim 10, wherein the medium access layer means further comprises:

a first medium access layer device configured to support communication in accordance with the first communication protocol; and

a second, independent medium access layer device configured to configured to support communication in accordance with the second communication protocol.

13. The local area network node system in accordance with claim 10, wherein the medium access layer means further comprises a medium access layer device constructed to support communication in accordance with the first and second communication protocols, the first and second physical layer devices coupled to the medium access layer device through a select circuit.

14. The local area network node system in accordance with claim 10, wherein a first pair of network nodes communicates with one another through their respective first physical layer devices over the first frequency band, and wherein a second pair of network nodes simultaneously communicates with one another through their respective second physical layer devices over the second frequency band.

15. The local area network node system in accordance with claim 11, further comprising:

a third frequency band; and

wherein a pair of network nodes being capable of establishing communication over the unshielded twisted pair communication medium through their respective second physical layer devices over the third frequency band.

16. The local area network node system in accordance with claim 15, wherein the third frequency band overlaps the first and second frequency bands.

17. The,network node system in accordance with claim 15, wherein the third frequency band is contained within the first frequency band.

18. The,network node system in accordance with claim 15, wherein a pair of network nodes establish communication over the unshielded twisted pair communication medium through their respective second physical layer devices over the third frequency band in accordance with the first communication protocol.

19. The local area network node system in accordance with claim 15, wherein a first pair of network nodes communicates with one another through their respective second physical layer devices over the second frequency band, and wherein a second pair of network nodes simultaneously communicates with one another through their respective second physical layer devices over the third frequency band.

20. A method for establishing a plurality of logical networks over a common unshielded twisted pair communication medium, comprising:

defining a first frequency band associated with a first communication protocol;

defining a second frequency band associated with a second communication protocol;

coupling a first pair of bidirectional communication nodes to the communication medium;

coupling a second pair of bidirectional communication nodes to the communication medium, each node of both the first and second pairs having a first physical layer device configured to operate in accordance with the first communication protocol and a second physical layer device configured to operate in accordance with the second communication protocol; and

wherein the first pair of nodes communicates with one another through their respective first physical layer devices over the first frequency band, and wherein the second pair of nodes simultaneously communicates with one another through their respective second physical layer devices over the second frequency band.

21. The method according to claim 20, further comprising:

providing medium access layer means for establishing communication over the unshielded twisted pair communication medium in accordance with the first and second communication protocols; and

communicating over the unshielded twisted pair communication medium using either the first or second communication protocols independently, under control of the medium access layer means.

22. The method according to claim 21, wherein the first communication protocol is characterized by a first particular data rate, and wherein the second communication protocol is characterized by a second particular data rate greater than the first data rate.

23. The method according to claim 22, wherein the first frequency band occupies a first portion of a frequency spectrum, and wherein the second frequency band occupies a second portion of the frequency spectrum higher than the first portion.

24. The method according to claim 23, further comprising:

defining a third frequency band; and

establishing communication over the unshielded twisted pair communication medium, between a pair of bidirectional communication nodes, through their respective second physical layer devices over the third frequency band.

25. The method according to claim 24, wherein the third frequency band overlaps the first and second frequency bands.

26. The method according to claim 24, wherein the third frequency band is contained within the first frequency band.

27. The method according to claim 24, wherein a pair of bidirectional communication nodes establish communication over the unshielded twisted pair communication medium through their respective second physical layer devices over the third frequency band in accordance with the first communication protocol.