Optical communications – Multiplex – Optical local area network
Reexamination Certificate
2005-02-18
2009-10-27
Phan, Hanh (Department: 2613)
Optical communications
Multiplex
Optical local area network
C398S072000, C398S099000, C398S036000, C370S389000, C370S468000, C370S390000, C370S392000, C370S352000
Reexamination Certificate
active
07609966
ABSTRACT:
An optical communication system includes an optical ring that couples a hub node and a plurality of local nodes. The hub node is capable of receiving traffic over the optical ring from the plurality of local nodes on a transmitting wavelength and transmitting traffic over the optical ring to the local nodes on a receiving wavelength. At least one local node is capable of adding traffic to the optical ring by determining whether any other local node is transmitting at the transmitting wavelength and, in response to determining that no other local node is transmitting at the transmitting wavelength, transmitting a request message to the hub node requesting use of the transmitting wavelength. The local node adding traffic is further capable of receiving a grant message from the hub node and, in response to receiving the grant message from the hub node, transmitting traffic at the transmitting wavelength.
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Gumaste Ashwin Anil
Kinoshita Susumu
Valisammagari Raghu Ramireddy
Baker & Botts L.L.P.
Fujitsu Limited
Phan Hanh
LandOfFree
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