# US 2018/0323909 A1 · Hybrid automatic repeat request for uplink ultra-reliable and low-latency communications

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2018/0323909 A1
- Document ID: US20180323909A1
- Status: Published application
- Kind: A1
- Application number: 15/970,251
- Filed: 2018-05-03
- Published: 2018-11-08
- Earliest claimed: 2017-05-04
- Assignees: Sharp Laboratories of America, Inc.
- Applicants: Sharp Laboratories of America, Inc.
- Inventors: Kai Ying; Tatsushi Aiba; Toshizo Nogami; John Michael Kowalski
- Web page: https://patentgrep.com/patent/US20180323909A1

## CPC

- H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H03M 13/6306: {Error control coding in combination with Automatic Repeat reQuest [ARQ] and diversity transmission, e.g. coding schemes for the multiple transmission of the same information or the transmission of incremental redundancy (H03M13/3761, H03M13/3769 and H03M13/635 take precedence)}
- H04L 1/0061: {Error detection codes}
- H04L 1/0072: {Error control for data other than payload data, e.g. control data}
- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- H04L 1/1822: involving configuration of automatic repeat request [ARQ] with parallel processes
- H04L 1/1854: {Scheduling and prioritising arrangements}
- H04L 1/1887: {Scheduling and prioritising arrangements}
- H04L 1/189: {Transmission or retransmission of more than one copy of a message}
- H04L 1/1896: {ARQ related signaling}
- H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal
- H04W 76/27: Transitions between radio resource control [RRC] states
- H03M 13/09: Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H03M: CODING; DECODING; CODE CONVERSION IN GENERAL (using fluidic means F15C4/00; optical analogue/digital converters G02F7/00; coding, decoding or code conversion, specially adapted for particular applications, see the relevant subclasses, e.g. G01D, G01R, G06F, G06T, G09G, G10L, G11B, G11C, H04B, H04L, H04M, H04N; ciphering or deciphering for cryptography or other purposes involving the need for secrecy G09C)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A user equipment (UE) is described. The UE includes receiving circuitry configured to receive a radio resource control message including first information used for configuring a number of repetitions and a periodicity, the number of the repetitions being for transmissions of a transport block (TB). The receiving circuitry receives a radio resource control message including second information used for configuring a monitoring occasion for a symbol. The receiving circuitry monitors a first physical downlink control channel (PDCCH) with cyclic redundancy check (CRC) scrambled by a cell radio network temporary identifier (C-RNTI). The receiving circuitry monitors a second PDCCH with CRC scrambled by a second RNTI different from the C-RNTI. The UE also includes transmitting circuitry configured to perform on a physical uplink shared channel (PUSCH), based on the first information, transmissions of the TB.

## Claims

### Claim 1

A user equipment comprising:
receiving circuitry configured to receive a radio resource control message including first information used for configuring a number of repetitions and a periodicity, the number of the repetitions being for transmissions of a transport block (TB),
the receiving circuitry configured to receive a radio resource control message including second information used for configuring a monitoring occasion for a symbol,
the receiving circuitry configured to monitor a first physical downlink control channel (PDCCH) with cyclic redundancy check (CRC) scrambled by a cell radio network temporary identifier (C-RNTI),
the receiving circuitry configured to monitor a second PDCCH with CRC scrambled by a second RNTI different from the C-RNTI; and
transmitting circuitry configured to perform on a physical uplink shared channel (PUSCH), based on the first information, transmissions of the TB, wherein
in a case that the PDCCH with CRC scrambled by the C-RNTI is received, the transmitting circuitry is configured to perform a transmission on the PUSCH scheduled by using the PDCCH with CRC scrambled by the C-RNTI,
in a case that the PDCCH with CRC scrambled by the second RNTI is received, the transmitting circuitry is configured to perform a retransmission of the TB on the PUSCH scheduled by using the PDCCH with CRC scrambled by the second RNTI, and
the second PDCCH with CRC scrambled by the second RNTI is monitored, based on second information, in a user equipment-specific search space given by the second RNTI.

### Claim 2

A base station apparatus comprising:
transmitting circuitry configured to transmit a radio resource control message including first information used for configuring a number of repetitions and a periodicity, the number of the repetitions being for transmissions of a transport block (TB),
the transmitting circuitry configured to transmit a radio resource control message including second information used for configuring a monitoring occasion for a symbol,
the transmitting circuitry configured to transmit a first physical downlink control channel (PDCCH) with cyclic redundancy check (CRC) scrambled by a cell radio network temporary identifier (C-RNTI),
the transmitting circuitry configured to transmit a second PDCCH with CRC scrambled by a second RNTI different from the C-RNTI; and
receiving circuitry configured to receive on a physical uplink shared channel (PUSCH), based on the first information, transmissions of the TB, wherein
in a case that the PDCCH with CRC scrambled by the C-RNTI is transmitted, the receiving circuitry is configured to receive a transmission on the PUSCH scheduled by using the PDCCH with CRC scrambled by the C-RNTI,
in a case that the PDCCH with CRC scrambled by the second RNTI is transmitted, the receiving circuitry is configured to receive a retransmission of the TB on the PUSCH scheduled by using the PDCCH with CRC scrambled by the second RNTI, and
the second PDCCH with CRC scrambled by the second RNTI is transmitted, based on second information, in a user equipment-specific search space given by the second RNTI.

### Claim 3

A communication method of a user equipment comprising:
receiving a radio resource control message including first information used for configuring a number of repetitions and a periodicity, the number of the repetitions being for transmissions of a transport block (TB);
receiving a radio resource control message including second information used for configuring a monitoring occasion for a symbol;
monitoring a first physical downlink control channel (PDCCH) with cyclic redundancy check (CRC) scrambled by a cell radio network temporary identifier (C-RNTI);
monitoring a second PDCCH with CRC scrambled by a second RNTI different from the C-RNTI; and
performing on a physical uplink shared channel (PUSCH), based on the first information, transmissions of the TB, wherein
in a case that the PDCCH with CRC scrambled by the C-RNTI is received, performing a transmission on the PUSCH scheduled by using the PDCCH with CRC scrambled by the C-RNTI,
in a case that the PDCCH with CRC scrambled by the second RNTI is received, performing a retransmission of the TB on the PUSCH scheduled by using the PDCCH with CRC scrambled by the second RNTI, and
the second PDCCH with CRC scrambled by the second RNTI is monitored, based on second information, in a user equipment-specific search space given by the second RNTI.

### Claim 4

A communication method of a base station apparatus comprising:
transmitting a radio resource control message including first information used for configuring a number of repetitions and a periodicity, the number of the repetitions being for transmissions of a transport block (TB);
transmitting a radio resource control message including second information used for configuring a monitoring occasion for a symbol;
transmitting a first physical downlink control channel (PDCCH) with cyclic redundancy check (CRC) scrambled by a cell radio network temporary identifier (C-RNTI);
transmitting a second PDCCH with CRC scrambled by a second RNTI different from the C-RNTI; and
receiving on a physical uplink shared channel (PUSCH), based on the first information, transmissions of the TB, wherein
in a case that the PDCCH with CRC scrambled by the C-RNTI is transmitted, receiving a transmission on the PUSCH scheduled by using the PDCCH with CRC scrambled by the C-RNTI,
in a case that the PDCCH with CRC scrambled by the second RNTI is transmitted, receiving a retransmission of the TB on the PUSCH scheduled by using the PDCCH with CRC scrambled by the second RNTI, and
the second PDCCH with CRC scrambled by the second RNTI is transmitted, based on second information, in a user equipment-specific search space given by the second RNTI.