The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2017
Filed:
Oct. 06, 2014
Telecommunication Systems, Inc., Annapolis, MD (US);
Gerhard Geldenbott, Seattle, WA (US);
Yinjun Zhu, Sammamish, WA (US);
John Gordon Hines, Kirkland, WA (US);
Victor Burton, Bellevue, WA (US);
Telecommunication Systems, Inc., Annapolis, MD (US);
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.