Mobile termination roaming forwarding for mobile devices

Patent metadata

Field	Value
Publication number	US-8948735-B2
Application number	US-201213350918-A
Country	US
Kind code	B2
Filing date	Jan 16, 2012
Priority date	Jan 21, 2011
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

A method for delivering a mobile terminated call to a mobile device communicating with a mobile switching center (MSC) in one example comprises steps of attempting to deliver the mobile terminated call to a mobile device, receiving a message that the mobile device is no longer in the location area served by the visiting MSC and forwarding the mobile terminated call to a different visiting MSC. The mobile terminated call is forwarded directly from one VMSC to another VMSC without requiring two potentially international calls to be placed serially from the GMSC to a VMSC. This method of Mobile Termination Roaming Forwarding can reduce substantial delay in call setup while saving network resources during establishment of the first call.

First claim

We claim:

1. A method for delivering a mobile terminated call to a mobile device, said method, performed by a VMSC/VLR (visiting mobile switching center/visiting location register), comprising the steps of:
receiving an initial address message (IAM) for the mobile device from a gateway mobile switching center (GMSC);
paging the mobile device that is referenced by the IAM;
receiving a cancel location message from the home location register (HLR) assigned to the mobile device, t…

Assignees

• Tian Lu
• Ejzak Richard
• Alcatel Lucent

Inventors

• Tian Lu
• Ejzak Richard

Classifications

• H04W8/12 Primary

  Electricity · mapped topic

• H04W76/027

  Electricity · mapped topic

• H04W8/06

  Electricity · mapped topic

• H04W76/18

  Electricity · mapped topic

• H04W68/02

  Electricity · mapped topic