System and method for achieving greater than 10 Gbit/s transmission rates for twisted pair physical layer devices
View Patent ↗A system and method for achieving greater than 10 Gbit/s transmission rates for twisted pair physical layer devices. An architecture is provided that enables transmission at the next standardized transmission rate over structured cabling.
1. A physical layer device for the transmission of data over a twisted pair copper cable, comprising:
a media access control layer interface that supports a first data transmission rate of greater than 10 Gbit/s;
a first forward error correction coder that supports the generation of forward error correction code blocks for transmission at said first data transmission rate over said twisted pair copper cable;
a second forward error correction coder that supports the generation of forward error correction code blocks for transmission at a second data transmission rate of 10 Gbit/s over said twisted pair copper cable;
a medium interface that supports transmission over said twisted pair copper cable; and
an autonegotiation sublayer that is configured to facilitate a selection of one of a plurality of operating modes that has a negotiated transmission rate selected from a plurality of transmission rates that includes said first data transmission rate and said second data transmission rate, wherein said selection of said one of said plurality of operating modes is based on an analysis of discovered communication characteristics that enables identification of a type of twisted pair copper cable and/or a length of said twisted pair copper cable, wherein one of said plurality of operating modes is a short reach mode of communication that enables said first transmission rate for a twisted pair copper cable of a first type and having a first cable length less than 100 meters, and a second of said plurality of operating modes enables said second transmission rate for a twisted pair copper cable of said first type and a second cable length of up to 100 meters.
2. The physical layer device of claim 1 , wherein said media access control layer interface is defined by IEEE 802.3ba.
3. The physical layer device of claim 1 , wherein one of said first and second forward error correction coders is a low density parity check coder.
4. The physical layer device of claim 1 , wherein said second forward error correction coder is a 10GBASE-T forward error correction coder.
5. The physical layer device of claim 1 , wherein said discovered communication characteristics are determined through testing of said twisted pair copper cable by said physical layer device.
6. The physical layer device of claim 1 , wherein said selection of an operating mode uses unformatted next page messages.
7. The physical layer device of claim 1 , wherein said selection of an operating mode uses physical signaling.
8. The physical layer device of claim 1 , wherein said selection of an operating mode uses Layer 2 messaging.
9. The physical layer device of claim 1 , wherein said first data transmission rate is 40 Gbit/s.
10. The physical layer device of claim 1 , wherein said first data transmission rate is 100 Gbit/s.
11. The physical layer device of claim 1 , wherein said first data transmission rate is greater than 10 Gbit/s and less than 40 Gbit/s.
12. A physical layer device for the transmission of data over a twisted pair copper cable, comprising:
a media access control layer interface that supports a first data transmission rate of greater than 10 Gbit/s;
a medium interface that supports transmission over said twisted pair copper cable; and
an autonegotiation sublayer that is configured to facilitate a selection of one of a plurality of operating modes that has a negotiated transmission rate selected from a plurality of transmission rates that includes said first data transmission rate and a second data transmission rate of 10 Gbit/s, wherein said selection of said one of said plurality of operating modes is based on an analysis of discovered communication characteristics that enables identification of a type of twisted pair copper cable and/or a length of said twisted pair copper cable, wherein one of said plurality of operating modes is a short reach mode of communication that enables said first transmission rate for a twisted pair copper cable of a first type and having a cable length less than 100 meters, and a second of said plurality of operating modes enables said second transmission rate for a twisted pair copper cable first type and a second cable length of up to 100 meters.
13. The physical layer device of claim 12 , wherein said discovered communication characteristics are determined through testing of said twisted pair copper cable by said physical layer device.
14. The physical layer device of claim 12 , wherein said first data transmission rate is 40 Gbit/s.
15. The physical layer device of claim 12 , wherein said first data transmission rate is 100 Gbit/s.
16. The physical layer device of claim 12 , wherein said first data transmission rate is greater than 10 Gbit/s and less than 40 Gbit/s.