# US 2021/0344401 A1 · Wireless communication system

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- Number: US 2021/0344401 A1
- Document ID: US20210344401A1
- Status: Published application
- Kind: A1
- Application number: 16/864,270
- Filed: 2020-05-01
- Published: 2021-11-04
- Earliest claimed: 2020-05-01
- Assignees: Fujikura Ltd.
- Applicants: Fujikura Ltd.
- Inventors: Ken Sakuma
- Web page: https://patentgrep.com/patent/US20210344401A1

## CPC

- H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping}
- H04B 7/0617: {for beam forming}
- H04B 7/088: {using beam selection}
- H04W 24/02: Arrangements for optimising operational condition
- H04W 72/046: {the resource being in the space domain, e.g. beams}
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A wireless communication system includes a first wireless communication device and a server communicably connected to the first wireless communication device. The server accumulates a plurality of optimized beam table, and selects therefrom an optimized beam table to be used by the first wireless communication device, and, the first wireless communication device obtains the optimized beam table selected by the server by communicating with the server, and performs a wireless communication using the obtained optimized beam table.

## Claims

### Claim 1

A wireless communication system comprising a first wireless communication device and a server communicably connected to the first wireless communication device, wherein:
the server accumulates a plurality of optimized beam table, and selects therefrom an optimized beam table to be used by the first wireless communication device; and
the first wireless communication device obtains the optimized beam table selected by the server by communicating with the server, and performs a wireless communication using the obtained optimized beam table.

### Claim 2 (depends on 1)

The wireless communication system according to claim 1, wherein the server selects the optimized beam table to be used by the first wireless communication device by referring to a subscriber database.

### Claim 3 (depends on 2)

The wireless communication system according to claim 2, further comprising a second wireless communication device performing a wireless communication with the first wireless communication device,
wherein in the subscriber database, an installation location of the second wireless communication device and an installation direction of an antenna of the second wireless communication device are registered.

### Claim 4 (depends on 3)

The wireless communication system according to claim 3, wherein in the subscriber database, a latitude and a longitude are registered as the installation location of the second wireless communication device.

### Claim 5 (depends on 4)

The wireless communication system according to claim 4, wherein in the subscriber database, an installation location of the first wireless communication device and an installation direction of an antenna of the first wireless communication device are further registered, and a latitude and a longitude are registered as the installation location of the first wireless communication device.

### Claim 6 (depends on 5)

The wireless communication system according to claim 5, wherein the server calculates a calculated direction of the second wireless communication device viewed from the first wireless communication device, and based on the calculated direction, selects an optimized beam table to be used by the first wireless communication device.

### Claim 7 (depends on 6)

The wireless communication system according to claim 6, wherein in the optimized beam table, an angular interval between beams in a vicinity of an optimized direction is narrower than an angular interval between beams in a direction other than the vicinity of the optimized direction.