Mitsubishi Denki Kabushiki Kaisha

Michiya Takemoto

Hiroaki Mukai

Yoshihiro Asashiba

Masaki Tanaka

Toshikazu Yoshida

Seiji Kozaki

Hiroshi Ichibangase

Ryusuke Kawate

Ken Murakami

Mitsuyoshi Iwasaki

Eiichi Horiuchi

Mitsuru Tsuchida

An allocation determining unit determines a bandwidth allocation for each of a plurality of subscriber devices in each data-collection cycle. A history managing unit takes a history of a request increment from a bandwidth request amount acquired from more than one time of data collections and an allocation amount allocated by the allocation determining unit for the bandwidth request amount, and presents a bandwidth request amount for the allocation determination to the allocation determining unit by dividing the bandwidth request amount into a plurality of request increments indicated by the history.

Station side communication device

A primary station equipment unit transmits, to a secondary station equipment unit, a message transmission enable signal granting transmission of a PST message from the secondary station equipment unit, when a predetermined period of time defined for transmission elapses after the primary station equipment unit transmitted a downstream PST message in a redundancy switching process corresponding to the secondary station equipment unit.

Optical multi-branch communication system

An OLTsequentially allocates transmission permission of a packet on an upstream transmission line to a plurality of ONUsregistered, and performs packet communication in a simplified method with control by using a first timer for detecting a packet signal and a second timer for controlling transmission permission time, in order to transmit an IP packet of variable length without mounting a function of complex processing for analyzing an upstream packet in the OLT

Packet transmission system, packet transmission method, packet transmission program, and recording medium on which the recorded program is recorded

Growing community of inventors

Tokyo, Japan

Michiya Takemoto