# US 12,114,248 B2 · Radio communication system and radio communication method

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- Number: US 12,114,248 B2
- Document ID: US12114248B2
- Status: Granted
- Kind: B2
- Application number: 18/260,416
- Filed: 2021-01-10
- Published: 2024-02-29
- Granted: 2024-10-08
- Earliest claimed: 2021-01-10
- Assignees: Hitachi Kokusai Electric Inc.
- Applicants: Hitachi Kokusai Electric Inc.
- Inventors: Masayuki Takekawa
- Web page: https://patentgrep.com/patent/US12114248B2

## CPC

- H04W 40/12: based on transmission quality or channel quality
- H04W 16/32: Hierarchical cell structures
- H04W 40/22: using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
- H04W 72/04: Wireless resource allocation
- H04W 76/36: for reassigning the resources associated with the released connections
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

There is provided a radio communication system comprising: a plurality of movable bodies that support route diversity transmission using a plurality of radio communication lines for data transmission; and an integration controller configured to collect line states of the radio communication lines for each of the plurality of movable bodies. The integration controller is configured to transmit a control signal of the radio communication line to a particular unmanned movable body so as to increase the number of unmanned movable bodies in which the number of radio communication lines whose line states satisfy a quality determination criterion is greater than or equal to a predetermined value, based on the line states of the radio communication lines collected for each of the plurality of movable bodies.

## Claims

### Claim 1

A radio communication system comprising:
a plurality of movable bodies that support route diversity transmission using a plurality of radio communication lines for data transmission; and
an integration controller configured to collect line states of the radio communication lines for each of the plurality of movable bodies,
wherein the integration controller is configured to transmit a control signal of the radio communication line to a particular one of the movable bodies so as to increase a number of the movable bodies in which a number of the radio communication lines whose line states satisfy a quality determination criterion is greater than or equal to a predetermined value, based on the line states of the radio communication lines collected for each of the plurality of movable bodies, and
the particular one of the movable bodies is a movable body using a same radio communication line as another of the movable bodies, in which the number of radio communication lines whose line states satisfy the quality determination criterion is smaller than the predetermined value, among the movable bodies in which the number of radio communication lines whose line states satisfy the quality determination criterion exceeds the predetermined value.

### Claim 2 (depends on 1)

The radio communication system of claim 1, wherein the integration controller is configured to transmit a control signal that instructs disconnection of a radio communication line whose line state does not satisfy the quality determination criterion to the particular one of the movable bodies.

### Claim 3 (depends on 2)

The radio communication system of claim 2, wherein the integration controller is configured to transmit a control signal that instructs a change of a connection target base station for at least one of the radio communication lines whose line states satisfy the quality determination criterion to the particular one of the movable bodies.

### Claim 4 (depends on 1)

The radio communication system of claim 1, wherein the integration controller is configured to transmit a control signal that instructs a change of a connection target base station for at least one of the radio communication lines whose line states satisfy the quality determination criterion to the particular one of the movable bodies.