Kddi Corporation

Yuu Tsukamoto

Shigeo Terabe

Shinobu Nanba

Hayato Fukuda

Haruhisa Hirayama

Toshiaki Yamamoto

Akio Ikami

A control device that functions as a RIC in an O-RAN identifies a plurality of antennas that are expected to receive, with at least a predetermined power, a signal from each of a plurality of terminal devices, and notifies an O-DU that is connected to first antennas included in the plurality of antennas for a first terminal device and executes demodulation and decoding processing for the first terminal device, and is connected to second antennas included in the plurality of antennas for a second terminal device and does not execute demodulation and decoding processing for the second terminal device, of information indicating the first antennas and information indicating a third antenna among the second antennas that is a target of transmission path estimation performed based on pilot symbols received from the second terminal device.

Control device that improves communication efficiency in cell-free massive MIMO system composed of many antennas, control method of the same, processing device, processing method of the same, and computer-readable storage medium

A plurality of DUs have at least a radio resource scheduling function among functions of a base station and each correspond to one or more slices. The plurality of CUs are each connected between a different DU among of the plurality of DUs and a core network, and each has, among the functions of the base station, a upper layer function than a function that the DU has. A radio unit (RU) has at least a radio wave transmission/reception function among the functions of the base station, and is deployed at an antenna site. The RU is connected with a plurality of DUs, and a plurality of slices provided through the plurality of DU are provided in the same cell formed by the RU

Base station system, radio unit and wireless communication apparatus

A plurality of schedulers each corresponding to one or more slices perform, in a same cell formed by one RU, scheduling of radio resources for a UE that uses a corresponding slice. A RAN controller identifies, for each of a plurality of schedulers, an amount of radio resources required for each scheduler in a predetermined period T, based on an amount of data and a communication quality of wireless communication by the UE in the cell. The RAN controller further allocates, to each of the plurality of schedulers, the identified amount of radio resources and a margin of radio resources that can be used for the scheduling.

Growing community of inventors

Fujimino, Japan

Yuu Tsukamoto