Method and apparatus for transmitting voice communications related to a multimedia session
US8681981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2010 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jun 1, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/033
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for transmitting a subset voice stream associated with a subset talk group. A voice communication device receives a session identifier from an associated data communication device engaged. The voice communication device transforms the session identifier into a session key identifier, obtains an encryption algorithm implementing a subset talk group filtering feature and a voice encryption key identifier, and combines the session key identifier with the voice encryption key identifier to generate a signaling key identifier. The voice communication device associates the signaling key identifier and an encryption algorithm identifier with the subset voice stream during transmission of the subset voice stream to a receiving voice communication device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.