Terminal apparatus, base station apparatus, and communication method

Patent metadata

Field	Value
Publication number	US-12457614-B2
Application number	US-202117795157-A
Country	US
Kind code	B2
Filing date	Jan 26, 2021
Priority date	Jan 29, 2020
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

A terminal apparatus includes a reception circuitry configured to receive a DCI format used for scheduling of a PUSCH, and a transmission circuitry configured to transmit the PUSCH in multiple slots. A size of a transport block is given based on a target coding rate indicated by the DCI format. The target coding rate is 1 or greater. An effective coding rate of the PUSCH is 1 or less. The effective coding rate is a value obtained by dividing the size of the transport block by a product of a modulation order of the PUSCH and the number of resource elements of the PUSCH.

First claim

The invention claimed is:

1. A terminal device comprising:
reception circuitry configured to receive a downlink control information (DCI) format for scheduling a physical uplink shared channel (PUSCH), which is mapped to X0 slots for a PUSCH repetition; and
transmission circuitry configured to transmit the PUSCH, wherein:
a size of a transport block transmitted in the PUSCH is determined by N RE =X1*min(156, N a RE )*n PRB ,
the N a RE is determined by N RB sc *N sh symb −N PRB DMRS −N PRB oh ,
the n PRB is a number of physical resource blocks (PRBs) allocated for the PUSCH,
the N RB sc is a number of subcarriers per resource block (RB),
the N sh symb is a number of orthogonal frequency division multiplex (OFDM) symbols allocated for the PUSCH in a duration,
the N PRB DMRS is a number of resource elements allocated for demodulation reference signals (DMRS) for the PUSCH in 1 PRB,
the N PRB oh is indicated by a first radio resource control (RRC) parameter,
the X1 is a first operator which controls the size of the transport block and is provided by a second RRC parameter,
the size of the transport block is determined by N RE =X1*min(156, N a RE )*n PRB in a case that a period for which one redundancy version (RV) is allocated spans more than one slot,
the X1 is different from the X0, and
the size of the transport block is determined by N RE =min(156, N a RE )*n PRB in a case that the period spans one slot.

2. A base station device comprising:
transmission circuitry configured to transmit a downlink control information (DCI) format for scheduling a physical uplink shared channel (PUSCH); and
reception circuitry configured to receive the PUSCH, which is mapped to X0 slots for a PUSCH repetition, wherein:
a size of a transport block received in the PUSCH is determined by N RE =X1*min(156, N a RE )*n PRB ,
the N a RE is determined by N RB sc *N sh symb −N PRB DMRS −N PRB oh ,
the n PRB is a number of physical resource blocks (PRBs) allocated for the PUSCH,
the N RB sc is a number of subcarriers per resource block (RB),
the N sh symb is a number of orthogonal frequency division multiplex (OFDM) symbols allocated for the PUSCH in a duration,
the N PRB DMRS is a number of resource elements allocated for demodulation reference signals (DMRS) for the PUSCH in 1 PRB,
the N PRB oh is indicated by a first radio resource control (RRC) parameter,
the X1 is a first operator which controls the size of the transport block and is provided by a second RRC parameter,
the size of the transport block is determined by N RE =X1*min(156, N a RE )*n PRB in a case that a period for which one redundancy version (RV) is allocated spans more than one slot,
the X1 is different from the X0, and
the size of the transport block is determined by N RE =min(156, N a RE )*n PRB in a case that the period spans one slot.

3. A communication method used for a terminal device, the communication method comprising:
receiving a downlink control information (DCI) format for scheduling a physical uplink shared channel (PUSCH); and
transmitting the PUSCH, which is mapped to X0 slots for a PUSCH repetition, wherein:
a size of a transport block transmitted in the PUSCH is determined by N RE =X1*min(156, N a RE )*n PRB ,
the N a RE is determined by N RB sc *N sh symb −N PRB DMRS −N PRB oh ,
the n PRB is a number of physical resource blocks (PRBs) allocated for the PUSCH,
the N RB sc is a number of subcarriers per resource block (RB),
the N sh symb is a number of orthogonal frequency division multiplex (OFDM) symbols allocated for the PUSCH in a duration,
the N PRB DMRS is a number of resource elements allocated for demodulation reference signals (DMRS) for the PUSCH in 1 PRB,
the N PRB oh is indicated by a first radio resource control (RRC) parameter,
the X1 is a first operator which controls the size of the transport block and is provided by a second RRC parameter,
the size of the transport block is determined by N RE =X1*min(156, N a RE )*n PRB in a case that a period for which one redundancy version (RV) is allocated spans more than one slot,
the X1 is different from the X0, and
the size of the transport block is determined by N RE =min(156, N a RE )*n PRB in a case that the period spans one slot.

Assignees

• Sharp Kk

Inventors

• Yoshimura Tomoki
• Suzuki Shoichi
• Nakashima Daiichiro
• Lin Huifa
• Ouchi Wataru

Classifications

• H04W72/1268

  of uplink data flows · CPC title

• H04L5/0051

  of dedicated pilots, i.e. pilots destined for a single user or terminal · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L27/26

  Systems using multi-frequency codes (H04L27/32 takes precedence) · CPC title