# US 12,010,051 B2 · Base station, terminal, and communication method

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- Number: US 12,010,051 B2
- Document ID: US12010051B2
- Status: Granted
- Kind: B2
- Application number: 17/601,012
- Filed: 2019-04-05
- Published: 2022-05-19
- Granted: 2024-06-11
- Earliest claimed: 2019-04-05
- Assignees: Panasonic Intellectual Property Corporation of America
- Applicants: Panasonic Intellectual Property Corporation of America
- Inventors: Ayako Horiuchi; Ankit Bhamri; Hidetoshi Suzuki
- Web page: https://patentgrep.com/patent/US12010051B2

## CPC

- H04L 5/0044: {Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH}
- H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals}
- H04L 1/0008: {by supplementing frame payload, e.g. with padding bits}
- H04W 24/08: Testing, {supervising or monitoring} using real traffic
- H04W 72/044: based on the type of the allocated resource
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04L 5/0092: {Indication of how the channel is divided}
- 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 first process (Step 4) of equalizing the sizes of control information between a first format for a first search space and a second format for a second search space and a second process (Procedure B) of equalizing the sizes of control information between a third format and the first format or the second format are carried out in a stepwise manner.

## Claims

### Claim 1

A communication apparatus comprising:
a receiver, which, in operation, receives one or more signals; and
circuitry, which is coupled to the receiver and which, in operation, monitors, in the one or more signals, a plurality of downlink control information (DCI) formats including a DCI format 0_0, a DCI format 1_0, a first DCI format used for scheduling of physical uplink shared channel (PUSCH), and a second DCI format used for scheduling of physical downlink shared channel (PDSCH), wherein each of the first DCI format and the second DCI format is different from the following DCI formats:
DCI format 0_0;
DCI format 0_1;
DCI format 1_0;
DCI format 1_1;
DCI format 2_0;
DCI format 2_1; and
DCI format 2_2,
wherein padding or truncation is applied to the plurality of DCI formats according to a procedure including the following steps in order:
determining the DCI format 0_0 and the DCI format 1_0;
determining the first DCI format and the second DCI format;
checking a first condition that a first total number of different DCI sizes of the plurality of the DCI formats is no more than a first determined number, and a second condition that a second total number of different DCI sizes with a cell-radio network temporary identifier (C-RNTI) of the plurality of the DCI formats is no more than a second determined number;
responsive to both of the first condition and the second condition being met, ending the procedure; and
responsive to at least one of the first condition and the second condition being not met, continuing the procedure including the following additional steps in order:
adjusting a size of the DCI format 0_0 and a size of the DCI format 1_0;
checking the first condition and the second condition;
responsive to both of the first condition and the second condition being met, ending the procedure; and
responsive to at least one of the first condition and the second condition being not met, adjusting a size of the first DCI format based on a size of one of the plurality of DCI formats.

### Claim 2 (depends on 1)

The communication apparatus according to claim 1, wherein the procedure includes a step of adjusting the size of the first DCI format based on the size of the second DCI format.

### Claim 3 (depends on 1)

The communication apparatus according to claim 1, wherein the DCI format 0_0 and the DCI format 1_0 are monitored in a user equipment (UE) specific search space (USS).

### Claim 4 (depends on 1)

The communication apparatus according to claim 1, wherein the first DCI format and the second DCI format are monitored in a user equipment (UE) specific search space (USS), and are not monitored in a common search space.

### Claim 5 (depends on 1)

The communication apparatus according to claim 1, wherein the first DCI format and the second DCI format are newer than the following DCI formats:
DCI format 0_0;
DCI format 0_1;
DCI format 1_0;
DCI format 1_1;
DCI format 2_0;
DCI format 2_1; and
DCI format 2_2.

### Claim 6

A communication method comprising:
receiving one or more signals; and
monitoring, in the one or more signals, a plurality of downlink control information (DCI) formats including a DCI format 0_0, a DCI format 1_0, a first DCI format used for scheduling of physical uplink shared channel (PUSCH), and a second DCI format used for scheduling of physical downlink shared channel (PDSCH), wherein each of the first DCI format and the second DCI format is different from the following DCI formats:
DCI format 0_0;
DCI format 0_1;
DCI format 1_0;
DCI format 1_1;
DCI format 2_0;
DCI format 2_1; and
DCI format 2_2,
wherein padding or truncation is applied to the plurality of DCI formats according to a procedure including the following steps in order:
determining the DCI format 0_0 and the DCI format 1_0;
determining the first DCI format and the second DCI format;
checking a first condition that a first total number of different DCI sizes of the plurality of the DCI formats is no more than a first determined number, and a second condition that a second total number of different DCI sizes with a cell-radio network temporary identifier (C-RNTI) of the plurality of the DCI formats is no more than a second determined number;
responsive to both of the first condition and the second condition being met, ending the procedure; and
responsive to at least one of the first condition and the second condition being not met, continuing the procedure including the following additional steps in order:
adjusting a size of the DCI format 0_0 and a size of the DCI format 1_0;
checking the first condition and the second condition;
responsive to both of the first condition and the second condition being met, ending the procedure; and
responsive to at least one of the first condition and the second condition being not met, adjusting a size of the first DCI format based on a size of one of the plurality of DCI formats.

### Claim 7 (depends on 6)

The communication method according to claim 6, wherein the procedure includes a step of adjusting the size of the first DCI format based on the size of the second DCI format.

### Claim 8 (depends on 6)

The communication method according to claim 6, wherein the DCI format 0_0 and the DCI format 1_0 are monitored in a user equipment (UE) specific search space (USS).

### Claim 9 (depends on 6)

The communication method according to claim 6, wherein the first DCI format and the second DCI format are monitored in a user equipment (UE) specific search space (USS), and are not monitored in a common search space.

### Claim 10 (depends on 6)

The communication method according to claim 6, wherein the first DCI format and the second DCI format are newer than the following DCI formats:
DCI format 0_0;
DCI format 0_1;
DCI format 1_0;
DCI format 1_1;
DCI format 2_0;
DCI format 2_1; and
DCI format 2_2.