Dynamic cyclic prefix configuration
US11005693B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2017 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | May 23, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/03006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A cyclic prefix is configured for transmissions on a cellular network using a Radio Access Technology based on Orthogonal Frequency Division Multiplexing (OFDM). At a User Equipment (UE) of the cellular network, information is determined for calculating a delay spread for transmission symbols from a base station of the cellular network to the UE. A cyclic prefix for the transmissions is identified based on the determined information. A delay spread can be established from received transmission symbols by: determining a coherence bandwidth based on whether a channel coefficient for each of the transmission symbols varies more than a predefined threshold, the delay spread being established using the determined coherence bandwidth; and/or determining a relationship between a cyclic prefix associated with the transmission symbols and a signal-to-interference-plus-noise ratio, SINR, for the received transmission symbols, the delay spread being established using the determined relationship.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.