# US 12,604,274 B2 · Relay base station, and method and computer program for relaying communication

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- Number: US 12,604,274 B2
- Document ID: US12604274B2
- Status: Granted
- Kind: B2
- Application number: 18/336,642
- Filed: 2023-06-16
- Published: 2023-12-28
- Granted: 2026-04-14
- Earliest claimed: 2022-06-22
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Shinichiroh Fujii; Hideo Hasegawa
- Web page: https://patentgrep.com/patent/US12604274B2

## CPC

- H04W 52/0277: {according to available power supply, e.g. switching off when a low battery condition is detected}
- H04W 52/028: {switching on or off only a part of the equipment circuit blocks}
- H04W 52/46: in multi-hop networks, e.g. wireless relay networks
- Y02D 30/70: in wireless communication networks
- 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

A relay base station mounted on a vehicle and configured to relay wireless communication between a base station and at least one communication terminal by power supply from a battery of the vehicle includes a processor configured to set a restriction level of the function of relaying wireless communication between the base station and the at least one communication terminal, based on at least one of travel power information on electric power used for travel control of the vehicle and remaining power information indicating remaining power of the battery of the vehicle, and relay the wireless communication according to the set restriction level.

## Claims

### Claim 1

A relay base station mounted on a vehicle and configured to relay wireless communication between a base station and at least one communication terminal by power supply from a battery of the vehicle, the relay base station comprising a processor configured to:
set a restriction level of the function of relaying wireless communication between the base station and the at least one communication terminal, based on travel power information on electric power used for travel control of the vehicle; and
relay the wireless communication according to the restriction level, and wherein the processor increases the restriction level as the electric power indicated by the travel power information increases.

### Claim 2 (depends on 1)

The relay base station according to claim 1, wherein the processor is further configured to estimate power consumption caused by executing the function of relaying according to the restriction level, and adjust the restriction level, further based on the estimated power consumption.

### Claim 3 (depends on 1)

The relay base station according to claim 1, wherein the processor is further configured to reduce radio resources allocated for relaying the wireless communication as the electric power indicated by the travel power information increases.

### Claim 4 (depends on 1)

The relay base station according to claim 1, wherein the processor is further configured to lower an upper limit of a number of the at least one communication terminal that can be connected to the relay base station in relaying the wireless communication as the electric power indicated by the travel power information increases.

### Claim 5

A method for relaying communication executed by a relay base station mounted on a vehicle and configured to relay wireless communication between a base station and at least one communication terminal by power supply from a battery of the vehicle, the method comprising:
setting a restriction level of the function of relaying wireless communication between the base station and the at least one communication terminal, based on travel power information on electric power used for travel control of the vehicle; and
relaying the wireless communication according to the restriction level, wherein setting the restriction level includes increasing the restriction level as the electric power indicated by the travel power information increases.

### Claim 6

A non-transitory recording medium that stores a computer program for relaying communication executed by a relay base station mounted on a vehicle and configured to relay wireless communication between a base station and at least one communication terminal by power supply from a battery of the vehicle, the computer program causing the relay base station to execute a process comprising:
setting a restriction level of the function of relaying wireless communication between the base station and the at least one communication terminal, based on travel power information on electric power used for travel control of the vehicle; and
relaying the wireless communication according to the restriction level, wherein setting the restriction level includes increasing the restriction level as the electric power indicated by the travel power information increases.