System and scheme for uplink synchronization for small data transmissions
US10356740B2 · kind B2 · utility
1Cited by
1References
28Claims
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Key dates
| Filing date | Nov 27, 2017 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Jan 28, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0838
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for timing advance (TA) synchronization for uplink (UL) data transmissions are provided. A base station transmits a TA instruction to a UE. The TA instruction indicates one of at least two TA options. The first TA option indicates direct initial grant-free (GF) uplink (UL) data transmissions. The second TA option indicates indirect initial GF UL data transmissions with the UE initiating TA reference signaling for updating a TA parameter of the UE. The UE performs an initial GF UL data transmission to the base station based on the TA instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.