Invention Grant
- Patent Title: Extended efficient usage of emergency services keys
- Patent Title (中): 扩展应急服务密钥的有效使用
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Application No.: US11987048Application Date: 2007-11-27
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Publication No.: US08208605B2Publication Date: 2012-06-26
- Inventor: Gerhard Geldenbott , Yinjun Zhu , John Gordon Hines , Victor Burton
- Applicant: Gerhard Geldenbott , Yinjun Zhu , John Gordon Hines , Victor Burton
- Applicant Address: US MD Annapolis
- Assignee: TeleCommunication Systems, Inc.
- Current Assignee: TeleCommunication Systems, Inc.
- Current Assignee Address: US MD Annapolis
- Agent William H. Bollman
- Main IPC: H04M11/04
- IPC: H04M11/04

Abstract:
An emergency services key (e.g., ESQK or ESRK) is guaranteed to be available from a limited size ESQK pool. A plurality of ESQKs are grouped into a pool of emergency service keys “ESQK Pool ID”, each including anywhere from 1 to N number of ESQKs. Each ESQK preferably has a “Timestamp”, information relating to the specific emergency E911 call (“Call Data ID”), a guard timer, and an optional hold timer. The ESQK having a Call Data ID=“NULL”, and having the oldest Timestamp, is chosen for selection. If no such ESQK has both Call Data ID=NULL and the oldest Timestamp is found, then the ESQK with merely the oldest Timestamp is selected. The timestamp is reset to a current time plus a guard timer, or hold timer if desired.
Public/Granted literature
- US20080154966A1 Extended efficient usage of emergency services keys Public/Granted day:2008-06-26
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