Method, apparatus and system for obtaining key information during fast channel switching
US8995463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2012 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | May 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/6437
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Embodiments of the present invention disclose a method, apparatus and system for obtaining key information during fast channel switching. A fast channel switching request sent by a terminal is received; at least one data unit bearing key information is generated according to the fast channel switching request; a fast channel switching response message is sent to the terminal, where the response message carries an identifier of a first data unit bearing the key information and the number of data units bearing the key information; and the at least one data unit bearing the key information is sent to the terminal. When the key information is lost, the key information is retransmitted without a need to perform status maintenance, which improves scalability of fast channel switching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.