US 11,122,593 B2 · Base station, terminal, and communication method

Abstract

A base station is disclosed, which is capable of appropriately configuring the timings of data assignment, data transmission and reception, and feedback for a case where the DL and UL sTTI lengths are different from each other. In this base station (100), a transmission section (106) transmits a downlink signal using a first short transmission time interval (sTTI) shortened in length than a TTI and used for downlink; and a reception section (107) receives an uplink signal using a second sTTI shortened in length than the TTI and used for uplink. When the first sTTI is shorter in length than the second sTTI, the reception section (107) receives the uplink signal in the second sTTI positioned after a predetermined interval from the transmission timing of the downlink signal, the predetermined interval being configured based on the length of the first sTTI.

Claims18

Dependent claims

A terminal comprising:

a receiver, which, in operation, receives a downlink signal transmitted from a base station in a first short transmission time interval (sTTI) that is shorter than a subframe;
and
a transmitter, which, in operation, transmits, to the base station, an uplink signal in a second sTTI after a determined number of first sTTIs from a reception timing of the downlink signal, the second sTTI being shorter than the subframe and longer than the first sTTI,
wherein the transmitter, in operation,
transmits the uplink signal in the second sTTI that first occurs after the determined number of first sTTIs from the reception timing of the downlink signal when a timing just after the determined number of first sTTIs from the reception timing of the downlink signal does not match a boundary between second sTTIs.

2 more elements

Dependencies are inferred from the claim text.

Base station, terminal, and communication method

Life of this patent

Base station, terminal, and communication method

Life of this patent

Abstract

Claims18