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User terminal and radio communication method

專(zhuān)利號(hào)
US11178679B2
公開(kāi)日期
2021-11-16
申請(qǐng)人
NTT DOCOMO, INC.（JP Tokyo）
發(fā)明人
Kazuki Takeda; Satoshi Nagata; Lihui Wang; Liu Liu; Huiling Jiang
IPC分類(lèi)
H04W4/00; H04W72/12
技術(shù)領(lǐng)域
sr,tti,stti,spucch,ue,ttis,in,pucch,subframe,prohibit
地域： Tokyo

摘要

The present invention is designed so that, even when communication is made using a plurality of transmission time intervals (TTIs), scheduling requests are transmitted adequately. According to one aspect of the present invention, a user terminal has a transmitting/receiving section that transmits and/or receives using a plurality of transmission time intervals (TTIs) of different durations, and a control section that determines a resource to use to transmit a scheduling request (SR) based on at least one of a first TTI and a second TTI having a shorter TTI duration than the first TTI.

說(shuō)明書(shū)

Now, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Note that the radio communication methods according to the herein-contained embodiments may be used individually or may be used in combination.

(Radio communication method)

First Embodiment

According to the first embodiment of the present invention, a base station applies one of the following configurations to a UE:

(1) The base station configures SRs only in the PUCCH used in long TTIs (embodiment 1.1);

(2) The base station configure SRs only in the sPUCCH used in short TTIs (embodiment 1.2); and

(3) The base station configures SRs in both the PUCCH used in long TTIs and the sPUCCH used in short TTIs (embodiment 1.3). Now, each embodiment will be described below.

Embodiment 1.1

In embodiment 1.1, an SR is configured in the PUCCH, and an SR is not configured in the sPUCCH. In embodiment 1.1, after the short TTI is set for operation (short TTI operation), a base station may reconfigure the parameters related to SRs (for example, the SR periodicity, the expiration time of the prohibit timer, and so on) in a UE so as to make the transmission delay of the SR shorter.

權(quán)利要求

1
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