RACH power offset
US10477577B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2018 |
| Grant date | Nov 12, 2019 |
| Priority date | — |
| Expiry date | May 4, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W74/0838
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A wireless device receives at least one radio resource control message comprising one or more configuration parameters of a cell. A control order for transmission of a random access preamble is received via the cell. A transmission power is determined for the random access preamble based on a pathloss measurement. When the one or more configuration parameters comprise one or more parameters of a channel state information reference signal (CSI-RS) for the cell: the pathloss measurement is based on the CSI-RS; and the determining the transmission power employs a power offset value indicated by the one or more configuration parameters. When the one or more configuration parameters do not comprise CSI-RS parameters for the cell: the pathloss measurement is based on at least one synchronization signal; and the determining the transmission power does not employ the power offset value. The random access preamble is transmitted based on the transmission power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.