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AssigneeNippon Telegraph and Telephone Corporation
InventorsKei KITAMURA, Takafumi HAMANO, Takashi KOTANIGAWA, Kaoru ARAI, Masahiro YOKOTA, Hideki MAEDA, Yoshiaki YAMADA, Takuya OHARA, Kengo SHINTAKU
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A framer in a transmission device allocates plural optical channel time slots to a plurality of logical prioritized paths. It allocates received client signals to the allocated time slots, and transmits the client signals by a plurality of optical subcarriers that use a plurality of optical wavelengths corresponding to the plurality of time slots. The framer includes: a time slot allocation unit that, in a case where an optical wavelength corresponding to a time slot allocated to a logical path having a high transmission priority is not used, allocates at least one of the plurality of time slots to the logical path having the high transmission priority while the time slot corresponding to the unused optical wavelength is avoided, to change the time slot allocated to the logical path having the high transmission priority.
A framer in a transmission device, wherein the transmission device allocates a plurality of logical paths each having a transmission priority to a plurality of time slots of an optical channel, allocates a plurality of client signals received by the plurality of logical paths to the plurality of time slots to which the plurality of logical paths is allocated, and transmits the plurality of client signals by a plurality of optical subcarriers that use a plurality of optical wavelengths corresponding to the plurality of time slots, the framer comprising:
A framing method performed by a framer in a transmission device, wherein the transmission device allocates a plurality of logical paths each having a transmission priority to a plurality of time slots of an optical channel, allocates a plurality of client signals received by the plurality of logical paths to the plurality of time slots to which the plurality of logical paths is allocated, and transmits the plurality of client signals by a plurality of optical subcarriers that use a plurality of optical wavelengths corresponding to the plurality of time slots, the framing method comprising:
Dependencies are inferred from the claim text.