H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/28 (2006.01) H04L 12/413 (2006.01) H04L 12/56 (2006.01) H04L 12/66 (2006.01)
Patent
CA 2525355
Ethernet packets are transmitted in full duplex mode over a single coaxial cable, such as RG6 and RG59. Symmetrical full duplex operation is achieved by separating the upstream and downstream signals in the frequency domain whereby a 100BaseT signal is transmitted unmodified in one direction while the other is modulated upon a high frequency carrier to be transmitted in the other direction. In a second embodiment, the separation is in the time domain whereby the signals are sampled in blocks, each block compressed in time and transmitted at a higher rate, thus allowing for the interleaving of upstream and downstream blocks on the same coaxial cable. In a third embodiment, different rate upstream and downstream signals are separated in the frequency domain, but without modulation. The resulting asymmetrical 1000/100 Mb/s Ethernet over coax link is valuable in network architectures where asymmetry in the up and down traffic loads is expected.
Bacque James Benson
Bergeron Jeffrey James
Loh Huck Kung
Remedios Derrick
Donnelly Victoria
Jacobi Systems Corp.
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