Frequency assignment method and transmission apparatus therefor
US10111234B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 20, 2014 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Jul 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W72/23
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A frequency assignment method in a communication system is provided. The method includes transmitting, by a base station, a pilot signal to the plurality of terminals; receiving, by the base station, channel information and a Signal to Interference Ratio (SIR) from the plurality of terminals as feedback information; determining, by the base station, a number of subcarriers to be used for interference alignment and a terminal to which interference alignment is to be applied, using the feedback information; selecting, by the base station, a frequency set to be used for interference alignment among preset frequency sets for interference alignment, and generating a transmit precoding matrix using a maximum of Degrees of Freedom (DoF) that can be obtained for each frequency; and transmitting, by the base station, an index of the selected frequency set to the determined terminal using the generated transmit precoding matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.