Point to multi-point communications system

Details Point to multi-point communications system Point to multi-point communications system

2005-11-29

2005-11-29

Etienne, Ario (Department: 2157)

Electrical computers and digital processing systems: multicomput

Distributed data processing

Client/server

C709S208000, C709S209000, C709S227000, C709S251000, C709S252000, C370S389000, C370S401000, C370S486000, C379S093050

Reexamination Certificate

active

06970905

ABSTRACT:
A point-to-multipoint communications network connecting multiple subscribers to a single communications line. A plurality of subscriber communications interfaces are connected in parallel to form a local group in which one communications interface serves as a master communications interface and the other communications interfaces serve as slaves. Each communications interface may be capable of serving as the master communications interface according to a demand division multiplexing technique, which assigns master status based on upstream data demands. As a communications interface is switched to master status, the communications interface previously holding master status is switched back to slave status. A plurality of communications interfaces can thus be connected to a single communications port without increasing the upstream transmission bandwidth requirements. Each network modem may communicate at a frequency separated from the frequencies of the other network modems, to substantially increase the bandwidth of the transmission medium.

REFERENCES:
patent: 6678721 (2004-01-01), Bell
patent: 6778646 (2004-08-01), Sun
patent: 2003/0035442 (2003-02-01), Eng
patent: 2004/0196857 (2004-10-01), Holloway et al.

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