Invention Grant
- Patent Title: Method, network and network entity for establishing a communication session to a user equipment roaming in IMS
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Application No.: US14402045Application Date: 2012-05-24
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Publication No.: US09794302B2Publication Date: 2017-10-17
- Inventor: Rogier August Caspar Joseph Noldus , Martien Huijsmans
- Applicant: Rogier August Caspar Joseph Noldus , Martien Huijsmans
- Applicant Address: SE Stockholm
- Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
- Current Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
- Current Assignee Address: SE Stockholm
- Agency: Murphy, Bilak & Homiller, PLLC
- International Application: PCT/EP2012/059780 WO 20120524
- International Announcement: WO2013/174440 WO 20131128
- Main IPC: H04L29/06
- IPC: H04L29/06 ; H04W76/02 ; H04W8/02 ; H04W8/06 ; H04W80/10 ; H04W8/08 ; H04L29/08

Abstract:
The invention relates to a method, network ad network entity for establishing a communication session between a calling subscriber residing in a first Visited IMS network and a called subscriber roaming in a second Visited IMS network. The method includes routing a first Invite request for the communication session via a media path extending from the first Visited IMS network via a Home IMS network of the called subscriber to the second Visited IMS network, and establishing the communication session. The method further includes inserting an additional IMS network entity, residing in the second Visited IMS network, in the part of the media path extending from the first Visited IMS network to the Home IMS network of the called subscriber and removing the Home IMS network of the called subscriber from the media path.
Public/Granted literature
Information query