# US 12,192,810 B2 · Terminal and radio communication method

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- Number: US 12,192,810 B2
- Document ID: US12192810B2
- Status: Granted
- Kind: B2
- Application number: 17/754,337
- Filed: 2019-10-02
- Published: 2022-10-27
- Granted: 2025-01-07
- Earliest claimed: 2019-10-02
- Assignees: Ntt Docomo, Inc.
- Applicants: Ntt Docomo, Inc.
- Inventors: Yuki Matsumura; Satoshi Nagata; Shaozhen Guo; Jing Wang; Xiaolin Hou
- Web page: https://patentgrep.com/patent/US12192810B2

## CPC

- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04L 5/001: {the frequencies being arranged in component carriers}
- 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

A terminal according to an aspect of the present disclosure includes a control section that allocates a plurality of PDCCH candidates to at least one of a plurality of search space (SS) sets, based on maximum numbers of monitored physical downlink control channel (PDCCH) candidates and non-overlapped control channel elements (CCEs) per slot per transmission/reception point, and a receiving section that monitors the plurality of allocated PDCCH candidates, wherein each of the plurality of SS sets corresponds to any of a plurality of transmission/reception points. According to one aspect of the present disclosure, it is possible to appropriately monitor a downlink control channel.

## Claims

### Claim 1

A terminal comprising:
a processor that allocates physical downlink control channel (PDCCH) candidates of a UE-specific search space set having a lower search space set index before PDCCH candidates of a UE-specific search space set having a higher search space set index, based on a limit per first control resource set (CORESET) group, for the first CORESET group configured for a higher layer index of two higher layer indices configured for multiple CORESETs, and wherein a common search space set exceeding the limit per the first CORESET group is not configured for the first CORESET group; and
a receiver that monitors the allocated PDCCH candidates.

### Claim 2 (depends on 1)

The terminal according to claim 1, wherein the limit per the first CORESET group corresponds to at least one of a maximum number of monitored PDCCH candidates per slot and a maximum number of non-overlapped control channel elements (CCEs) per slot.

### Claim 3 (depends on 1)

The terminal according to claim 1, wherein the receiver receives multiple physical downlink shared channels (PDSCHs) respectively scheduled by multiple downlink control information included in multiple PDCCHs detected based on the monitored PDCCH candidates.

### Claim 4

A radio communication method for a terminal, comprising:
allocating physical downlink control channel (PDCCH) candidates of a UE-specific search space set having a lower search space set index before PDCCH candidates of a UE-specific search space set having a higher search space set index, based on a limit per first control resource set (CORESET) group, for the first CORESET group configured for a higher layer index of two higher layer indices configured for multiple CORESETs, and wherein a common search space set exceeding the limit per the first CORESET group is not configured for the first CORESET group; and
monitoring the allocated PDCCH candidates.

### Claim 5

A system comprising a terminal and a base station, wherein
the terminal comprises:
a processor that allocates physical downlink control channel (PDCCH) candidates of UE-specific search space set having a lower search space set index before PDCCH candidates of a UE-specific search space set having a higher search space set index, based on a limit per first control resource set (CORESET) group, for the first CORESET group configured for a higher layer index of two higher layer indices configured for multiple CORESETs, and wherein a common search space set exceeding the limit per the first CORESET group is not configured for the first CORESET group; and
a receiver that monitors the allocated PDCCH candidates, and
the base station comprises:
a transmitter that transmits the PDCCH candidates.