Public safety access point (PSAP) selection for E911 wireless callers in a GSM type system

• US 20110211494A1
• Filed: 05/09/2011
• Published: 09/01/2011
• Est. Priority Date: 03/28/2002
• Status: Abandoned Application

• Current Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Original Assignee: TeleCommunication Systems Inc (Comtech Telecommunications Corporation)
• Inventors: Rhodes, Jeffrey C., Luo, Tong, Conner, Christine, Burton, Victor
• Application Number:
  US13/067,098
• Publication Number:
  US 20110211494A1
• Time in Patent Office: Days
• US Class Current: 370/259
• CPC Class Codes: H04W 4/90 Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management
• CPC Class Codes: H04W 76/50 for emergency connections
• CPC Class Codes: H04W 84/04 Large scale networks; Deep hierarchical networks

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).

Claims

1. A method of providing cross-carrier messaging, comprising:

intercepting a short message from a sending subscriber of a first wireless carrier intended for transmission over an Internet;

storing said intercepted short message in an individual subscriber queue located in a gateway;

determining a destination of said short message based on a mobile identification number (MIN); and

automatically delivering said short message to said receiving subscriber of a second wireless carrier different from said first wireless carrier without transmission over said Internet;

whereby said short message is transmitted between different wireless carriers without requiring transmission over an Internet.

2-18. -18. (canceled)