Optical access network method, optical access network, and...

Details Optical access network method, optical access network, and... Optical access network method, optical access network, and...

2005-11-14

2009-08-18

Singh, Dalzid (Department: 2613)

Optical communications

Multiplex

Broadcast and distribution system

C398S072000, C398S045000, C398S049000, C398S057000, C398S067000

Reexamination Certificate

active

07577362

ABSTRACT:
An optical access network method, an optical access network and an optical switch for an optical access network, capable of solving all the three problems in the conventional GE-PON: transmission distance problem, security problem and communication interference problem. The optical access network comprises an OLT, a plurality of ONUs and one or more stages of optical switches, which are connected one another. In the direction from the OLT to the ONU, each frame (packet) transmitted from the OLT to one of the ONUs is checked so that only the destination ONU specified in the frame (packet) is connected to the OLT. In the direction from the ONU to the OLT, a control message transmitted from the OLT to one of the ONUs is checked so that only one ONU which has been given a transmission allowance from the OLT is connected to the OLT with respect to each frame (packet).

REFERENCES:
patent: 6285473 (2001-09-01), Nishi et al.
patent: 7283746 (2007-10-01), Ikeda
patent: 2004/0208549 (2004-10-01), Rutledge et al.
patent: 9-153858 (1997-06-01), None
patent: 10-70509 (1998-03-01), None

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