Method and apparatus for interference demodulation reference signal detection with serving signal cancellation
US10959236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2018 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Aug 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0051
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method for characterizing an interference demodulation reference signal (DMRS) in a piece of user equipment (UE), e.g., a mobile device. The UE determines whether the serving signal is transmitted in a DMRS-based transmission mode; if it is, the UE cancels the serving DMRS from the received signal; otherwise the UE cancels the serving data signal from the received signal. The remaining signal is then analyzed for the amount of power it has in each of four interference DMRS candidates, and hypothesis testing is performed to determine whether interference DMRS is present in the signal, and, if so, to determine the rank of the interference DMRS, and the port and scrambling identity of each of the interference DMRS layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.