ES2543327T3

5G,4G,3G,2G

Title

Not Available

Application Number:

ES20130181039T

Publication Date:

18-08-2015

Current Assignee:

Family ID:

Application Date:

09-12-2005

Declaring Company:

Publication Country:

US

Priority Date:

09-12-2004

Title

Not Available

Application Number:

ES20130181039T

Family ID:

Publication Country:

US

Publication Date:

18-08-2015

Application Date:

09-12-2005

Priority Date:

09-12-2004

Current Assignee:

Declaring Company:

Abstract  Abstract

A method used in a wireless transmission / reception unit, WTRU (102), the method comprising: registering with an IP multimedia subsystem, IMS (150), using the Session Initiation Protocol, SIP, with a local area network wireless, WLAN (130); receive a voice call service from the IMS through the WLAN; establish a connection with the IMS through a radio access network, RAN, where the RAN is a cellular RAN (110); initiate a handover of the voice call service from the WLAN to the RAN, characterized by performing the handover while continuously receiving the voice call service from the IMS during handover and maintaining a connection with the WLAN while simultaneously maintaining a connection with the cellular RAN.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.