Method for allowing a successful first mobile terminated call towards a mobile subscriber initially assigned to a failing core network node

US9510178B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Haibin Chu · Shanghai, CN
• Yingjiao He · Shanghai, CN
• Linhai Jiang · Shanghai, CN
• Chunbo Wang · Shanghai, CN
• Jacky Wu · Taipei, TW
• Mingqiu Xu · Shanghai, CN
• Henry Zheng · Shanghai, CN

Key dates

• Filing date: Jan 9, 2012
• Grant date: Nov 29, 2016
• Expiry date: Apr 23, 2032

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W36/12
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

A method for a fallback core network node within core network nodes for a first mobile terminated call towards a mobile subscriber initially assigned to a failing ore network node (failing CNN). The method includes receiving data associated to International Mobile Subscriber Identity and Location Area Identifier (LAI) of a mobile subscriber handled in the failing CNN. The method includes receiving a service request from a home location register (HLR), whereby the service request indicates that the fallback CNN is acting as a fallback CNN for the failing CNN, and sending a response to the service request towards the HLR comprising the roaming Number assigned by the fallback CNN. The method includes initiating a paging request towards the radio network comprising said received LAI of said mobile subscriber, and sending a Service Request towards the HLR comprising the Mobile Station Integrated Services Digital Network Number of the mobile subscriber.