# US 2025/0096887 A1 · Wireless communication apparatus and startup method

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- Number: US 2025/0096887 A1
- Document ID: US20250096887A1
- Status: Published application
- Kind: A1
- Application number: 18/729,811
- Filed: 2022-01-20
- Published: 2025-03-20
- Earliest claimed: 2022-01-20
- Assignees: Nippon Telegraph and Telephone Corporation
- Applicants: Nippon Telegraph and Telephone Corporation
- Inventors: Kazumitsu SAKAMOTO; Tomoya KAGEYAMA; Yosuke FUJINO; Daisuke GOTO; Yasuyoshi KOJIMA; Kiyohiko ITOKAWA
- Web page: https://patentgrep.com/patent/US20250096887A1

## CPC

- H04B 7/18513: {Transmission in a satellite or space-based system}
- H04B 7/15: Active relay systems
- H04W 4/38: for collecting sensor information
- H04W 52/02: Power saving arrangements
- H04W 52/0235: {where the received signal is a power saving command}
- H04W 84/06: Airborne or Satellite Networks (space-based or airborne stations H04B7/185)
- Y02D 30/70: in wireless communication networks
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)
- Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE

## Abstract

There is provided a wireless communication device in a wireless communication system including one or more communication devices installed on the ground and a moving wireless communication device, the wireless communication device including: an activation signal generation unit that generates an activation signal for activating the one or more communication devices; a distribution unit that distributes the activation signal generated by the activation signal generation unit; one or more frequency change application units that apply a frequency change to the activation signal distributed by the distribution unit; and a transmission unit that transmits an activation signal to which a frequency change is applied to the one or more frequency change application units.

## Claims

### Claim 1

A wireless communication device in a wireless communication system including one or more communication devices installed on the ground and a moving wireless communication device, the wireless communication device comprising:
an activation signal generator configured to generate an activation signal for activating the one or more communication devices;
one or more frequency change appliers configured to apply a frequency change to the activation signal generated by the activation signal generator; and
a transmitter configured to transmit an activation signal to which a frequency change is applied to the one or more frequency change appliers.

### Claim 2 (depends on 1)

The wireless communication device according to claim 1, wherein
the one or more frequency change appliers are a plurality of frequency change appliers,
the wireless communication device further comprises:
a distributor configured to distribute the activation signal generated by the activation signal generator and outputs the activation signal to each of the plurality of frequency change-appliers; and
a synthesizer configured to synthesize each activation signal to which the frequency change is applied by the plurality of frequency change appliers, and
the transmitter transmission unit transmits the activation signal synthesized by the synthesizer.

### Claim 3 (depends on 2)

The wireless communication device according to claim 2, wherein
each of the plurality of frequency change appliers applies a different frequency change to the activation signal distributed by the distributor.

### Claim 4 (depends on 2)

The wireless communication device according to claim 2, wherein
at least some of the plurality of frequency change appliers apply the same frequency change to the activation signal distributed by the distributor.

### Claim 5 (depends on 1)

The wireless communication device according to claim 1, further comprising: a setter configured to set a frequency change value applied by the one or more frequency change appliers for each of the one or more frequency change-appliers, wherein
the setter sets a frequency change value set for each area on the ground viewed from the wireless communication device for each of the one or more frequency change appliers.

### Claim 6 (depends on 5)

The wireless communication device according to claim 5, wherein
when an instruction to activate the one or more communication devices installed in a specific area is input, the setter sets a frequency change value corresponding to the specific area in the one or more frequency change appliers.

### Claim 7

An activation method performed by a wireless communication device in a wireless communication system including one or more communication devices installed on the ground and the moving wireless communication device, the activation method comprising:
generating an activation signal for activating the one or more communication devices;
applying a frequency change to the generated activation signal; and
transmitting an activation signal to which a frequency change is applied.