Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Minoru Akita

Takamasa Suzuki

Akinori Fujimura

Seiji Kozaki

Tetsuya Yokotani

Yoshihiro Asashiba

A wireless communication apparatus reducing power consumption of a large circuit size switch unit, includes a demultiplexing unit that separates an input multiplexed signal into plural signals for each input port, a prestage rearrangement unit that rearranges the plural signals input from the demultiplexing unit and outputs plural prestage rearranged signals for each input port, a switch unit that inputs the plural prestage rearranged signals output from the prestage rearrangement unit provided for each input port as plural signals before switching and applies switching processes to the plural signals before the switching to be output as plural switched signals for each output port, a poststage rearrangement unit that inputs and rearranges the plural switched signals output from the switch unit for each output port and outputs plural poststage rearranged signals for each output port, and a multiplexing unit that multiplexes the plural poststage rearranged signals for each output port.

Wireless communication apparatus and wireless communication control method that performs communication using a frequency division multiplexing method

A dynamic bandwidth assignment system includes a network unit for carrying out cell slot assignment, and a network termination for transmitting cells to the network unit by means of cell slots assigned by the network unit. When the number of consecutive valid cells the network unit receives from the network terminations exceeds a predetermined threshold value, the network unit increases the number of the cell slots to be assigned to the network termination. The system can solve a problem of a conventional system in that it is unavoidable that a cell transfer delay and a bursting tendency of cells are statistically increased.

Dynamic bandwidth assignment system and dynamic bandwidth assignment method capable of reducing cell transmission delay

Growing community of inventors

Tokyo, Japan

Minoru Akita