# US 2021/0243737 A1 · Wireless communication method, enode b, and user equipment

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- Number: US 2021/0243737 A1
- Document ID: US20210243737A1
- Status: Published application
- Kind: A1
- Application number: 17/235,789
- Filed: 2021-04-20
- Published: 2021-08-05
- Earliest claimed: 2015-04-10
- Assignees: Panasonic Intellectual Property Corporation of America
- Applicants: Panasonic Intellectual Property Corporation of America
- Inventors: Lilei Wang; Hidetoshi Suzuki; Chi Gao; Masayuki Hoshino
- Web page: https://patentgrep.com/patent/US20210243737A1

## CPC

- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 72/232: the control data signalling from the physical layer, e.g. DCI signalling
- H04W 72/0446: Resources in time domain, e.g. slots or frames
- H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA
- 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

Provided are wireless communication methods, an eNB and a UE. The wireless communication method performed by an eNB includes transmitting downlink control information (DCI) to a user equipment (UE), wherein the DCI is designed based on a coverage enhancement level for the UE.

## Claims

### Claim at position 1

1-12. (canceled)

### Claim 13

A wireless communication method performed by a user equipment (UE), comprising:
receiving first downlink control information (DCI) used for a first coverage enhancement (CE) level, the first DCI including frequency domain information and time domain information, the frequency domain information indicating a number of physical resource blocks (PRBs) from a plurality of candidates for the number of PRBs in a frequency domain within a narrowband which is a part of a bandwidth, and the time domain information indicating a number of repetitions in a time domain; and
controlling a reception of a physical downlink shared channel (PDSCH) by using the number of physical resource blocks (PRBs) and the number of repetitions in the time domain,
wherein a number of bits of the first DCI is smaller than that of second DCI used for a second CE level, the second CE level being lower than the first CE level.

### Claim 14 (depends on 13)

The wireless communication method according to claim 13, wherein one of the first CE level and the second CE level is configured by Radio Resource Control (RRC) layer.

### Claim 15 (depends on 13)

The wireless communication method according to claim 13, wherein the first CE level is used when a CE level is larger than a threshold.

### Claim 16 (depends on 13)

The wireless communication method according to claim 13, wherein one or more contents included in the first DCI are same as one or more contents included in the second DCI, the one or more contents included in the first DCI having fewer bits than the one or more contents included in the second DCI.

### Claim 17 (depends on 13)

The wireless communication method according to claim 13, wherein the second DCI includes all contents of the first DCI and additional contents.

### Claim 18 (depends on 13)

The wireless communication method according to claim 13, wherein the frequency domain information further indicates a position of the PRBs in the frequency domain within the narrowband.

### Claim 19 (depends on 13)

The wireless communication method according to claim 13, wherein the narrowband is composed of 6 PRBs.

### Claim 20

A wireless communication apparatus comprising:
a receiver which, in operation, receives first downlink control information (DCI) used for a first coverage enhancement (CE) level, the first DCI including frequency domain information and time domain information, the frequency domain information indicating a number of physical resource blocks (PRBs) from a plurality of candidates for the number of PRBs in a frequency domain within a narrowband which is a part of a bandwidth, and the time domain information indicating a number of repetitions in a time domain; and
circuitry which, in operation, controls a reception of a physical downlink shared channel (PDSCH) by using the number of physical resource blocks (PRBs) and the number of repetitions in the time domain,
wherein a number of bits of the first DCI is smaller than that of second DCI used for a second CE level, the second CE level being lower than the first CE level.

### Claim 21 (depends on 20)

The wireless communication apparatus according to claim 20, wherein one of the first CE level and the second CE level is configured by Radio Resource Control (RRC) layer.

### Claim 22 (depends on 20)

The wireless communication apparatus according to claim 20, wherein the first CE level is used when a CE level is larger than a threshold.

### Claim 23 (depends on 20)

The wireless communication apparatus according to claim 20, wherein one or more contents included in the first DCI are same as one or more contents included in the second DCI, the one or more contents included in the first DCI having fewer bits than the one or more contents included in the second DCI.

### Claim 24 (depends on 20)

The wireless communication apparatus according to claim 20, wherein the second DCI includes all contents of the first DCI and additional contents.

### Claim 25 (depends on 20)

The wireless communication apparatus according to claim 20, wherein the frequency domain information further indicates a position of the PRBs in the frequency domain within the narrowband.

### Claim 26 (depends on 20)

The wireless communication apparatus according to claim 20,
wherein the narrowband is composed of 6 PRBs.