Granted Patent B2

US 12,349,088 · App. 17/755,771 · Granted Jul 1, 2025

Inventors: Daisuke Hiratsuka (Tokyo, JP); Kunihiko Teshima (Tokyo, JP); Anil Umesh (Tokyo, JP)

Assignee: NTT DOCOMO, INC.

H04W56/0015H04W88/08

Abstract

Claims (20)

1. An open radio access network (O-RAN) distributed unit (O-DU) comprising:

a receiver which receives, from an intermediate device provided on a fronthaul, processing time information indicating a processing time in the intermediate device;

a processor which decides capability information for the intermediate device based on the processing time information and on capability information of an O-RAN radio unit (O-RU) provided on the fronthaul; and

a transmitter which transmits the capability information for the intermediate device to the intermediate device.

2. The O-DU according to claim 1 , wherein the processor decides the capability information for the intermediate device based on the processing time information, on the capability information of the O-RU and on a delay time between the intermediate device and the O-DU.

3. The O-DU according to claim 1 , wherein the processor decides the capability information for the intermediate device based on the processing time information, on the capability information of the O-RU and on a total delay time in the fronthaul.

4. An intermediate device comprising:

a transmitter which is provided on a fronthaul and transmits processing time information indicating a processing time in the intermediate device to an open radio access network (O-RAN) distributed unit (O-DU) provided on the fronthaul; and

a receiver which receives capability information for the intermediate device from the O-DU,

wherein the O-DU decides the capability information for the intermediate device based on the processing time information and on capability information of an O-RAN radio unit (O-RU) provided on the fronthaul.

5. A radio communication system comprising an intermediate device provided on a fronthaul and an open radio access network (O-RAN) distributed unit (O-DU) provided on the fronthaul, wherein

the O-DU comprises:

a receiver which receives, from the intermediate device, processing time information indicating a processing time in the intermediate device;

a processor which decides capability information for the intermediate device based on the processing time information and on capability information of an O-RAN radio unit (O-RU) provided on the fronthaul; and

a transmitter which transmits the capability information for the intermediate device to the intermediate device, and

the intermediate device comprises a receiver which receives the capability information for the intermediate device.

6. A radio communication method comprising:

receiving by an open radio access network (O-RAN) distributed unit (O-DU), from an intermediate device provided on a fronthaul, processing time information indicating a processing time in the intermediate device;

deciding by the O-DU, capability information for the intermediate device based on the processing time information and on capability information of an O-RAN radio unit (O-RU) provided on the fronthaul; and

transmitting by the O-DU, the capability information for the intermediate device to the intermediate device.

Assignments (1)

Continuity (1)

References Cited (18)