# US 12,010,524 B2 · Band sharing communication system, line control method, line control device, and line control program

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,010,524 B2
- Document ID: US12010524B2
- Status: Granted
- Kind: B2
- Application number: 17/628,771
- Filed: 2019-07-24
- Published: 2022-09-01
- Granted: 2024-06-11
- Earliest claimed: 2019-07-24
- Assignees: Nippon Telegraph and Telephone Corporation
- Applicants: Nippon Telegraph and Telephone Corporation
- Inventors: Daisuke Goto; Fumihiro Yamashita; Munehiro Matsui; Hiroki Shibayama; Yutaka Imaizumi; Koichi Harada; Izumi Urata; Masaki Shima
- Web page: https://patentgrep.com/patent/US12010524B2

## CPC

- H04L 5/0058: {Allocation criteria}
- H04W 16/14: Spectrum sharing arrangements {between different networks}
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 5/0073: {Allocation arrangements that take into account other cell interferences}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- H04W 76/36: for reassigning the resources associated with the released connections
- H04W 72/56: based on priority criteria
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

In a band sharing communication system in which there are a primary system and a secondary system in descending order of priority of communication, the systems share frequency bands, and a base station or a line control device performs allocation of a requested band of a terminal station of each system, the base station or the line control device includes: occupied band setting means for setting a primary occupied band and a secondary occupied band adjacent to the primary occupied band; band allocation means for allocating a vacant band of the primary occupied band with respect to a requested band of a primary terminal station and allocating a vacant band of the secondary occupied band with respect to a requested band of a secondary terminal station; and band transferring means for, when there is no vacant band in the primary occupied band with respect to the requested band of the primary terminal station, if a vacant band equivalent to the requested band is present in the secondary occupied band such that the vacant band is adjacent to the primary occupied band, transferring the vacant band from the secondary occupied band to the primary occupied band and allocating the vacant band to the primary terminal station, and if communication is being performed in a band in the secondary occupied band which is adjacent to the primary occupied band and equivalent to the requested band, transferring a vacant band created by making a suspension request to the secondary terminal station performing the communication from the secondary occupied band to the primary occupied band and allocating the vacant band to the primary terminal station.

## Claims

### Claim 1

A band sharing communication system in which there are a primary system and a secondary system in descending order of priority of communication, the systems share frequency bands, and a base station or a line control device performs allocation of a requested band of a terminal station of each system, the base station or the line control device comprising:
a processor; and
a non-transitory storage medium having computer program instructions stored thereon, when executed by the processor, perform to:
set a frequency band to be occupied by the primary system as a primary occupied band and a frequency band adjacent to the primary occupied band and to be occupied by the secondary system as a secondary occupied band;
allocate a vacant band of the primary occupied band with respect to a requested band of a primary terminal station of the primary system and allocate a vacant band of the secondary occupied band with respect to a requested band of a secondary terminal station of the secondary system; when there is no vacant band in the primary occupied band with respect to the requested band of the primary terminal station, and when a vacant band equivalent to the requested band is present in the secondary occupied band such that the vacant band is adjacent to the primary occupied band, transfer the vacant band from the secondary occupied band to the primary occupied band and allocate the vacant band to the primary terminal station, and when communication is being performed in a band in the secondary occupied band which is adjacent to the primary occupied band and equivalent to the requested band, transfer a vacant band created by making a suspension request to the secondary terminal station performing the communication from the secondary occupied band to the primary occupied band and allocate the vacant band to the primary terminal station; and
perform a reconnection process using a vacant band in the secondary occupied band for the communication of the secondary terminal station to which the suspension request has been made.

### Claim 2

A line control method for a band sharing communication system in which there are a primary system and a secondary system in descending order of priority of communication, the systems share frequency bands, and allocation of a requested band of a terminal station of each system is performed, the method comprising:
setting a frequency band to be occupied by the primary system as a primary occupied band and a frequency band adjacent to the primary occupied band and to be occupied by the secondary system as a secondary occupied band;
allocating a vacant band of the primary occupied band with respect to a requested band of a primary terminal station of the primary system and allocating a vacant band of the secondary occupied band with respect to a requested band of a secondary terminal station of the secondary system;
when there is no vacant band in the primary occupied band with respect to the requested band of the primary terminal station and when a vacant band equivalent to the requested band is present in the secondary occupied band such that the vacant band is adjacent to the primary occupied band, transferring the vacant band from the secondary occupied band to the primary occupied band and allocating the vacant band to the primary terminal station, and when communication is being performed in a band in the secondary occupied band which is adjacent to the primary occupied band and equivalent to the requested band, transferring a vacant band created by making a suspension request to the secondary terminal station performing the communication from the secondary occupied band to the primary occupied band and allocating the vacant band to the primary terminal station; and
performing a reconnection process using a vacant band in the secondary occupied band for the communication of the secondary terminal station to which the suspension request has been made.

### Claim 3

A line control device for a band sharing communication system in which there are a primary system and a secondary system in descending order of priority of communication, the systems share frequency bands, and allocation of a requested band of a terminal station of each system is performed, the line control device comprising:
a processor; and
a non-transitory storage medium having computer program instructions stored thereon, when executed by the processor, perform to:
set a frequency band to be occupied by the primary system as a primary occupied band and a frequency band adjacent to the primary occupied band and to be occupied by the secondary system as a secondary occupied band;
allocate a vacant band of the primary occupied band with respect to a requested band of a primary terminal station of the primary system and allocating a vacant band of the secondary occupied band with respect to a requested band of a secondary terminal station of the secondary system; and
when there is no vacant band in the primary occupied band with respect to the requested band of the primary terminal station and when a vacant band equivalent to the requested band is present in the secondary occupied band such that the vacant band is adjacent to the primary occupied band, transfer the vacant band from the secondary occupied band to the primary occupied band and allocate the vacant band to the primary terminal station, and when communication is being performed in a band in the secondary occupied band which is adjacent to the primary occupied band and equivalent to the requested band, transfer a vacant band created by making a suspension request to the secondary terminal station performing the communication from the secondary occupied band to the primary occupied band and allocate the vacant band to the primary terminal station; and
perform a reconnection process using a vacant band in the secondary occupied band for the communication of the secondary terminal station to which the suspension request has been made.