# US 12,015,485 B2 · Methods, devices, and medium for communication

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- Number: US 12,015,485 B2
- Document ID: US12015485B2
- Status: Granted
- Kind: B2
- Application number: 17/916,687
- Filed: 2020-04-04
- Published: 2023-05-25
- Granted: 2024-06-18
- Earliest claimed: 2020-04-04
- Assignees: NEC Corporation
- Applicants: NEC Corporation
- Inventors: Lin Liang; Gang Wang
- Web page: https://patentgrep.com/patent/US12015485B2

## CPC

- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04W 74/006: {in the downlink, i.e. towards the terminal}
- H04W 74/0833: Random access procedures, e.g. with 4-step access
- 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

Embodiments of the present disclosure relate to communication. According to embodiments of the present disclosure, a network device is able to configure resources dedicated to repetition of transmission during the access procedure. If a terminal device determines to perform the repetition of transmission, the terminal device uses the dedicated resources for the transmission. The numbers of the repetition are determined based on a target power for the transmission and a maximum power at the terminal device. In this way, it improves coverage of the terminal device and the success in accessing channel.

## Claims

### Claim 1

A method performed by a terminal device, the method comprising:
receiving a configuration information comprising an indication indicating a set of preambles for repetitions for a message 3 physical uplink shared channel (PUSCH) transmission via radio resource control (RRC) signaling;
transmitting a request for the repetitions for the message 3 PUSCH transmission by using a preamble from the set of preambles;
receiving a random access response (RAR) indicating a first number of the repetitions for the message 3 PUSCH transmission; and
performing the message 3 PUSCH transmission based on the first number of the repetitions.

### Claim 2

A method performed by a network device, the method comprising:
transmitting a configuration information comprising an indication indicating a set of preambles for repetitions for a message 3 physical uplink shared channel (PUSCH) transmission via radio resource control (RRC) signaling;
receiving a request for the repetitions for the message 3 PUSCH transmission by using a preamble from the set of preambles;
transmitting a random access response (RAR) indicating a first number of the repetitions for the message 3 PUSCH transmission; and
receiving the message 3 PUSCH transmission based on the first number of the repetitions.

### Claim 3

A terminal device comprising:
at least one processor configured to:
receive a configuration information comprising an indication indicating a set of preambles for repetitions for a message 3 physical uplink shared channel (PUSCH) transmission via radio resource control (RRC) signaling;
transmit a request for the repetitions for the message 3 PUSCH transmission by using a preamble from the set of preambles;
receive a random access response (RAR) indicating a first number of the repetitions for the message 3 PUSCH transmission; and
perform the message 3 PUSCH transmission based on the first number of the repetitions.