Patent ID: 9749079
Date: 2017-08-29
CPC Classifications: H04J,H04L,H04Q

Claim:
1. A station-side apparatus switching a plurality of uplink wavelengths, performing transmission and reception while varying a bandwidth, and applied to an optical system of a PON topology, the station-side apparatus allocating, in accordance with a signal bandwidth request from a subscriber apparatus, an uplink wavelength and the bandwidth to the subscriber apparatus to prevent signals, transmitted from a plurality of the subscriber apparatuses, from colliding with each other, instructing, when wavelength allocation to the subscriber apparatus is not switched, a signal transmission start time and a transmission duration time to the subscriber apparatus for each predetermined cycle, instructing, when the wavelength allocation to the subscriber apparatus is switched, a new uplink wavelength to the subscriber apparatus, instructing that the subscriber apparatus transmits a wavelength switch completion report for reporting completion of switching of the wavelength at a new uplink wavelength, and waiting for the wavelength switch completion report at the new uplink wavelength across a plurality of the predetermined cycles.