Invention Grant
US09125182B2 System and method for determining establishment causes for emergency sessions
有权
用于确定紧急会议的建立原因的系统和方法
- Patent Title: System and method for determining establishment causes for emergency sessions
- Patent Title (中): 用于确定紧急会议的建立原因的系统和方法
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Application No.: US13499644Application Date: 2010-10-01
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Publication No.: US09125182B2Publication Date: 2015-09-01
- Inventor: Chen Ho Chin , Richard Charles Burbidge
- Applicant: Chen Ho Chin , Richard Charles Burbidge
- Applicant Address: CA Waterloo, Ontario
- Assignee: BlackBerry Limited
- Current Assignee: BlackBerry Limited
- Current Assignee Address: CA Waterloo, Ontario
- Agency: Fish & Richardson P.C.
- International Application: PCT/IB2010/002607 WO 20101001
- International Announcement: WO2011/039636 WO 20110407
- Main IPC: H04L12/28
- IPC: H04L12/28 ; H04W76/02 ; H04W4/22 ; H04W76/00
Abstract:
A method for initiating a Packet Switched emergency call using a user equipment (UE) is presented. 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 using the UE. The ATTACH REQUEST has an attach type. 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.
Public/Granted literature
- US20120269099A1 System and Method for Determining Establishment Causes for Emergency Sessions Public/Granted day:2012-10-25
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