Terminal device, base station device, and communication method
US10420144B2 · kind B2 · utility
5Cited by
0References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2016 |
| Grant date | Sep 17, 2019 |
| Priority date | — |
| Expiry date | Aug 2, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/0453
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
To efficiently control a cell by using a non-allocated frequency band or a shared frequency band. The terminal device includes a reception unit configured to receive a PDCCH, a transmission unit configured to transmit a PUSCH in a serving cell, and a CCA check unit configured to perform either first LBT for performing a CCA check a number of times based on a random number before a subframe for which a transmission of the PUSCH is indicated or second LBT for performing a CCA check only once. The terminal device switches between the first LBT and the second LBT, based on a prescribed condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.