Invention Application
- Patent Title: DETERMINING ESTABLISHMENT CAUSES FOR EMERGENCY SESSIONS
- Patent Title (中): 确定紧急会议的建立因素
-
Application No.: PCT/IB2010002607Application Date: 2010-10-01
-
Publication No.: WO2011039636A3Publication Date: 2011-05-26
- Inventor: CHIN CHEN-HO , BURBIDGE RICHARD C
- Applicant: RESEARCH IN MOTION LTD , CHIN CHEN-HO , BURBIDGE RICHARD C
- Assignee: RESEARCH IN MOTION LTD,CHIN CHEN-HO,BURBIDGE RICHARD C
- Current Assignee: RESEARCH IN MOTION LTD,CHIN CHEN-HO,BURBIDGE RICHARD C
- Priority: US24821309 2009-10-02
- Main IPC: H04W76/02
- IPC: H04W76/02
Abstract:
Initiating a Packet Switched or IMS emergency call using a user equipment (UE). The UE includes a plurality of protocol layers. The plurality of protocol layers including an IMS sublayer, a non-access stratum (NAS) layer and an access stratum (AS) layer. The method includes generating an ATTACH REQUEST or PDN Connectivity request including an APN identifying an emergency APN using the UE. The ATTACH REQUEST has an attach type i.e. EPS emergency attach. The method includes retrieving the attach type of the ATTACH REQUEST using the NAS layer of the UE, and generating an RRC CONNECTION REQUEST. The RRC CONNECTION REQUEST includes an RRC establishment cause based upon the attach type of the attach request e.g. EPS emergency call, PS emergency, IMS emergency call, etc.
Information query