Method for location based intercept in a communication system

• US 6,138,013 A
• Filed: 02/12/1998
• Issued: 10/24/2000
• Est. Priority Date: 02/12/1998
• Status: Expired due to Term

• Current Assignee: CDC Propriete Intellectuelle
• Original Assignee: Motorola, Inc. (Motorola Solutions, Inc.)
• Inventors: Blanchard, Scott David, Patel, Pramodkumar, Heuvel, Dean Paul Vanden
• Primary Examiner(s): Tsang, Fan
• Assistant Examiner(s): Jama, Isaak R.
• Application Number:
  US09/022,829
• Time in Patent Office: 985 Days
• Field of Search: 455/427, 455/428, 455/430, 455/445, 455/12.1, 455/13.1, 455/456, 455/457, 455/440, 342/352, 342/353, 379/34, 379/35
• US Class Current: 455/428
• CPC Class Codes: H04B 7/18558 Arrangements for managing communications, i.e. for setting up, maintaining or releasing a call between stations
• CPC Class Codes: H04L 63/304 intercepting circuit switched data communications lawful interception of wireless network communications H04W12/02
• CPC Class Codes: H04W 12/80 Arrangements enabling lawful interception [LI]

Abstract

A method for providing location based intercept in a satellite communications system (10) includes the steps of determining a location area of a party (220), determining whether the location area is one to be monitored (240), and conditionally routing the call to an intercept gateway (250). An intercept gateway (32) is a gateway that intercepts all or part of the calls received, and can also function as a home gateway (30) or a visiting gateway (40).

Claims

1. A method of handling a call request in a satellite communications system, said satellite communications system comprising a plurality of gateways, at least one of said plurality of gateways being an intercept gateway, said intercept gateway being a gateway capable of intercepting all calls routed therethrough, said satellite communications system including enough intercept gateways so that all intercept needs are met using the intercept gateways, said method comprising the steps of:

a) determining a target location area;

b) establishing an intercept gateway for said target location area, said intercept gateway comprising means for intercepting all calls routed therethrough from or to said target location area;

c) receiving said call request for a call, said call having a calling party and a called party associated therewith;

d) determining a location area of said calling party;

e) comparing said location area of said calling party to said target location area;

f) when said location area of said calling party is within said target location area, routing said call to said intercept gateway for said target location area, wherein said intercept gateway for said target location area routes a copy of said call to a monitoring agency associated with said target location area, and routes said call to said called party, and when said location area of said calling party is not within said target location area routing said call to a virtual visiting gateway;

g) determining a location area of said called party;

h) comparing said location area of said called party to said target location area;

i) when said location area of said called party is within said target location area, routing said call to said intercept gateway for said target location area, wherein said intercept gateway for said target location area routes a copy of said call to a monitoring agency associated with said target location area, and routes said call to said called party; and

j) when said location area of said called party is not within said target location area routing said call to said called party.

2. The method of claim 1 wherein steps c)-f) are performed by a home gateway.

3. The method of claim 1 wherein steps g)-j) are performed by said virtual visiting gateway.

4. The method of claim 1 wherein step c) further comprises the step of querying information included in said call request.

5. The method of claim 1 wherein step c) further comprises the step of determining when said call is a data call.