Base station and user device for reducing amount of information for interference canceller in radio communication system
US10142939B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2015 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Jul 14, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/0473
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A base station, according to received qualities at user devices, allocates a downlink transmission power to each user device. The base station transmits a mixed data signal in which data signals mutually not orthogonal and each addressed to a corresponding user device are mixed. Control signals are transmitted to user devices to enable each user device to decode a data signal addressed to the user device using a control signal corresponding to the user device. Each control signal is scrambled by the identifier of the corresponding user device. A control signal for a first user device to which a first data signal is addressed includes information indicating the identifier of a second user device to which a second data signal mixed with the first data signal is addressed. The first user device is thus enabled to descramble a control signal for the second user device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.