Base station and user equipment
US10014968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2015 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Jul 14, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/143
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A base station allocates downlink transmission powers to user equipments according to the reception qualities of the user equipments. The base station transmits a mixed data signal in which multiple data signals that are addressed to multiple user equipments and are not orthogonal to each other are mixed, and transmits multiple control signals to the multiple user equipments such that each user equipment can decode the data signal addressed to that user equipment using the control signal corresponding to that user equipment. Each control signal is scrambled using the identifier of the user equipment corresponding to that control signal. With a period longer than the transmission period for the control signal, the base station notifies the multiple user equipments of identifier information indicating multiple identifiers, and thus the user equipment can descramble a control signal for another user equipment to which an interference data signal with a higher transmission power is addressed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.