PARENT STATION DEVICE, CHILD STATION DEVICE, OPTICAL COMMUNICATION SYSTEM, CONTROL DEVICE, AND BANDWIDTH ALLOCATION METHOD

摘要

Provided is a parent station device, comprising: a Report frame analysis unit (102) which extracts a requested bandwidth from a Report frame; an upstream bandwidth computation unit (111) which computes upstream bandwidth from the requested bandwidth; a surplus time computation unit (103) which derives a surplus time to an allowed delay time for each LLID; a priority computation unit (104) which derives a priority of a data request corresponding to the Report frame on the basis of the surplus time; a Report request registration unit (105) which generates a Report request which requests the allocation of the upstream bandwidth for the Report frame, and determines the priority of the Report request; an allocation order read-out unit (107) which determines an allocation order of a data request and the Report request on the basis of the priority; and a Gate frame creation unit (108) which determines a transmission permit time period and creates a Gate frame for each LLID on the basis of the allocation order and the upstream bandwidth.