Patent · US Active

Method and arrangement for session negotiation

US9161286B2 · kind B2 · utility

3Cited by

2References

19Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Daniel Enström · Luleå, SE
Tomas Frankkila · Luleå, SE
Stefan Bruhn · Sollentuna, SE

Key dates

Filing date	Apr 6, 2010
Grant date	Oct 13, 2015
Priority date	—
Expiry date	Jan 9, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04W88/181
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In a method of improved session negotiation between first and second clients in a cellular telecommunication system, the two clients negotiating S10 and agreeing upon a first codec type for a session. The first and second clients then initiating the session and exchanging S20 media data frames according to the first codec type. Subsequently, during the initiated session, at least one of the first and second clients providing S30 an indication for a second codec type in at least one subsequent media data frame. Finally, upon receiving and recognizing said indication, the other of said first and second clients switching S40 to the indicated second codec type in a next media data frame, thereby enabling the first and second clients to exchange subsequent media frames utilizing the second codec type.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.