Mechanisms for single frequency networks in high-speed mobile scenarios
US10516468B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2016 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Apr 1, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W88/085
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Technologies described herein provide mechanisms for a legacy UE traveling at a high speed (e.g., in a high speed train) to estimate the opposite Doppler shifts separately for different RRHs in an SFN so that the UE can more effectively receive a payload assigned by the SFN. In addition, the present disclosure provides UE signal process mechanisms to improve HST receiver performance such that good demodulation performance can be achieved without significant impacts on UE implementation. The present disclosure provides a specific framework to improve cellular SFN system operation using a combination of an SFN data signal transmissions from different RRHs and orthogonal non-SFN reference signal transmissions from different RRHs. A UE may estimate a propagation channel for each RRH using a reference signal and use this information to improve the demodulation of the combined SFN data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.