# US 12,225,512 B2 · Base station, terminal, and communication method

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- Number: US 12,225,512 B2
- Document ID: US12225512B2
- Status: Granted
- Kind: B2
- Application number: 18/521,846
- Filed: 2023-11-28
- Published: 2024-03-21
- Granted: 2025-02-11
- Earliest claimed: 2017-03-17
- Assignees: Panasonic Intellectual Property Corporation of America
- Applicants: Panasonic Intellectual Property Corporation of America
- Inventors: Ayako Horiuchi; Hidetoshi Suzuki
- Web page: https://patentgrep.com/patent/US12225512B2

## CPC

- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04W 72/044: based on the type of the allocated resource
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 88/08: Access point devices
- 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 base station, a signal allocating unit allocates downlink control signals (DCI) to a control channel region (CORESET) constituted by a plurality of control channel elements (CCEs), and a transmitting unit transmits the downlink control signals. In this case, the number of resource element groups (REGs) that constitute the CCE is a power of 2, and a bundling size indicating the number of REGs included in the REGs that constitute the CCE and arranged in adjacent resource blocks is a power of 2.

## Claims

### Claim 1

An integrated circuit for a base station, the integrated circuit comprising:
at least one output, which, in operation, outputs a signal, and circuitry, which, in operation, controls:
setting a control-resource set (CORESET) in a physical downlink control channel (PDCCH) comprising a control channel element (CCE); and
transmitting a downlink control signal in the CORESET,
wherein the CCE is formed of 6 resource-element groups (REGs) in the CORESET, the 6 REGs being bundled into REG bundles, and
a REG bundle size of the REG bundles is different according to a number of symbols of the CORESET.

### Claim 2 (depends on 1)

The integrated circuit according to claim 1, wherein the number of symbols of the CORESET is indicated by a higher layer signaling.

### Claim 3 (depends on 1)

The integrated circuit according to claim 1, wherein the number of symbols of the CORESET is a time duration of the CORESET.

### Claim 4 (depends on 1)

The integrated circuit according to claim 1, wherein in a case that the number of symbols of the CORESET is 2 or 3, the CCE is arranged over a plurality of symbols of the CORESET.

### Claim 5 (depends on 1)

The integrated circuit according to claim 1, wherein a common demodulation reference signal (DMRS) is used for each of REG bundles.

### Claim 6 (depends on 1)

The integrated circuit according to claim 1, wherein REGs included in each of the REG bundles are adjacent to each other.