Public safety access point (PSAP) selection for E911 wireless callers in a GSM type system
First Claim
1. A method of providing ESRK, ESRD or ESRV information for a wireless E911 caller, comprising:
- requesting accurate location information relating to said wireless E911 caller;
delaying selection of a public safety access point a given amount of time until said requested accurate location information is received; and
returning a location relating to a serving base station as a default condition in place of said requested accurate location information if said accurate location information is not received before expiration of said given amount of time.
4 Assignments
0 Petitions
Accused Products
Abstract
Public safety access points are selected in a wireless network for E911 calls based on ESRD substitution when ESRKs are not being used. The present invention was conceived as an ESRK workaround solution to implement Phase II of the E911 rules from the starting point of a Phase I implementation. ESRKs, ESRDs or ESRVs are initially obtained and managed for each PSAP in a particular carrier'"'"'s area. Then, Phase I processes are modified to wait to see if Phase II GSM location information will be reported in a timely manner (e.g., within a second or two or so) before committing to a default selection of a particular PSAP based on information available (e.g., based on the location of a serving cell site).
-
Citations
18 Claims
-
1. A method of providing ESRK, ESRD or ESRV information for a wireless E911 caller, comprising:
-
requesting accurate location information relating to said wireless E911 caller;
delaying selection of a public safety access point a given amount of time until said requested accurate location information is received; and
returning a location relating to a serving base station as a default condition in place of said requested accurate location information if said accurate location information is not received before expiration of said given amount of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. Apparatus for providing ESRK, ESRD or ESRV information for a wireless E911 caller, comprising:
-
means for requesting accurate location information relating to said wireless E911 caller;
means for delaying selection of a public safety access point a given amount of time until said requested accurate location information is received; and
means for returning a location relating to a serving base station as a default condition in place of said requested accurate location information if said accurate location information is not received before expiration of said given amount of time. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification