US2011105074A1

5G,4G

Title

REESTABLISHMENT OF AN RRC CONNECTION FOR AN EMERGENCY CALL IN AN LTE NETWORK

Application Number:

US20100940988

Publication Date:

05-05-2011

Current Assignee:

Family ID:

Application Date:

05-11-2009

Declaring Company:

Publication Country:

US

Priority Date:

05-11-2010

Title

REESTABLISHMENT OF AN RRC CONNECTION FOR AN EMERGENCY CALL IN AN LTE NETWORK

Application Number:

US20100940988

Family ID:

Publication Country:

US

Publication Date:

05-05-2011

Application Date:

05-11-2009

Priority Date:

05-11-2010

Current Assignee:

Declaring Company:

Abstract  Abstract

A mobile device initiates an RRC connection reestablishment procedure or a cell update procedure for an emergency call after experiencing a failure condition in an LTE network environment. The mobile device establishes an RRC connection with an acceptable cell to originate an emergency call. The mobile device detects a failure condition, such as a radio link failure, which disrupts the RRC connection. The mobile device searches for available cells that it may reestablish the RRC connection with, but can only find acceptable cells. The mobile device may initiate an RRC connection reestablishment procedure with an acceptable cell. The mobile device may also only attempt to reestablish the RRC connection with a cell that is part of a PLMN that the original acceptable cell was also a part of. The mobile device may also enter an RRC_IDLE mode upon detecting a failure condition.

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.