Method and apparatus for secure data transmission
US9148780B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Oct 19, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/76
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for secured data transmission is provided. The base station determines a first precoding matrix based on channel information of an eavesdropper. The base station determines a second precoding matrix and a third precoding matrix. The base station generates the secure data by precoding first user data for a target user with the first precoding matrix and the second precoding matrix. The base station transmits the secure data signal to the target user. The second precoding matrix is determined based on the first precoding matrix and the first channel information. The third precoding matrix is determined based on the first channel information and the second channel information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.