User terminal and radio communication method

Patent metadata

Field	Value
Publication number	US-12150140-B2
Application number	US-201917439266-A
Country	US
Kind code	B2
Filing date	Mar 15, 2019
Priority date	Mar 15, 2019
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

A user terminal according to an aspect of the present disclosure comprises: a reception unit which receives downlink control information including a field for each transport block (TB) or a field for a specific transport block (TB); and a control unit which controls the transmission or reception of a plurality of different transport blocks (TB) using a plurality of shared channels that are scheduled according to the downlink control information over a plurality of time units. Accordingly, it is possible to appropriately control the transmission or reception of a plurality of pieces of data that are multi-data scheduled.

First claim

What is claimed is:

1. A terminal comprising:
a receiver that receives downlink control information to schedule transmission of a plurality of transport blocks (TBs) each using a plurality of uplink shared channels; and
a processor that applies a value of a hybrid automatic repeat request (HARQ) process number field in the downlink control information to a HARQ process number for a first TB among the plurality of TBs, and determines, based on the HARQ process number for the first TB, a HARQ process number for a second TB among the plurality of TBs,
wherein the processor determines, based on a value of a Time Domain Resource Allocation (TDRA) field for the first TB in the downlink control information, a time domain resource allocated to the second TB.

2. The terminal according to claim 1 , wherein the downlink control information includes at least one of a new data indicator (NDI) field and a redundancy version (RV) field for each of the plurality of TBs.

3. The terminal according to claim 1 , wherein the downlink control information includes a new data indicator (NDI) field and a redundancy version (RV) field for each of the plurality of TBs.

4. The terminal according to claim 1 , wherein a number of the plurality of TBs is indicated by a value of a field included in the downlink control information.

5. The terminal according to claim 1 , wherein the processor determines a HARQ process number for a 1+nth TB among the plurality of TBs by adding 1 to a HARQ process number for an nth TB among the plurality of TBs, and the processor, when the HARQ process number for the nth TB among the plurality of TBs is a maximum value of the HARQ process number field, determines that the HARQ process number for the 1+nth TB among the plurality of TBs is a minimum value of the HARQ process number field.

6. A radio communication method for a terminal, comprising:
receiving downlink control information to schedule transmission of a plurality of transport blocks (TBs) each using a plurality of uplink shared channels;
applying a value of a hybrid automatic repeat request (HARQ) process number field in the downlink control information to a HARQ process number for a first TB among the plurality of TBs;
determining a HARQ process number for a second TB among the plurality of TBs based on the HARQ process number for the first TB; and
determining, based on a value of a Time Domain Resource Allocation (TDRA) field for the first TB in the downlink control information, a time domain resource allocated to the second TB.

7. A base station comprising:
a transmitter that transmits downlink control information to schedule transmission of a plurality of transport blocks (TBs) each using a plurality of uplink shared channels; and
a processor that applies a value of a hybrid automatic repeat request (HARQ) process number field in the downlink control information to a HARQ process number for a first TB among the plurality of TBs, and determines, based on the HARQ process number for the first TB, a HARQ process number for a second TB among the plurality of TBs,
wherein the processor determines, based on a value of a time domain resource allocation (TDRA) field for the first TB in the downlink control information, a time domain resource allocated to the second TB.

8. A system comprising a terminal and a base station, wherein
the terminal comprises:
a receiver that receives downlink control information to schedule transmission of a plurality of transport blocks (TBs) each using a plurality of uplink shared channels; and
a processor of the terminal that applies a value of a hybrid automatic repeat request (HARQ) process number field in the downlink control information to a HARQ process number for a first TB among the plurality of TBs, and determines, based on the HARQ process number for the first TB, a HARQ process number for a second TB among the plurality of TBs,
wherein the processor of the terminal determines, based on a value of a Time Domain Resource Allocation (TDRA) field for the first TB in the downlink control information, a time domain resource allocated to the second TB, and

the base station comprises:
a transmitter that transmits the downlink control information; and
a processor of the base station that applies the value of the HARQ process number field in the downlink control information to the HARQ process number for the first TB among the plurality of TBs, and determines, based on the HARQ process number for the first TB, the HARQ process number for the second TB among the plurality of TBs,
wherein the processor of the base station determines, based on the value of the TDRA field for the first TB in the downlink control information, the time domain resource allocated to the second TB.

9. The terminal according to claim 2 , wherein a number of the plurality of TBs is indicated by a value of a field included in the downlink control information.

10. The terminal according to claim 3 , wherein a number of the plurality of TBs is indicated by a value of a field included in the downlink control information.

Assignees

• Ntt Docomo Inc

Inventors

• Takeda Kazuki
• Harada Hiroki
• Nagata Satoshi
• Wang Lihui
• Hou Xiaolin

Classifications

• H04L1/1812

  Hybrid protocols; Hybrid automatic repeat request [HARQ] · CPC title

• H04W72/23 Primary

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/1263

  Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows · CPC title

• H04L5/0053 Primary

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title