20 April 2002
Source: U.S. Patent Office:
http://www.uspto.gov
See Office of Technology Assessment electronic surveillance reports, 1977-95:
http://jya.com/e-snoop.htm
Links are to full patents at U.S. Patent Office database.
Abstracts below.
| No. | Date Granted | Patent No. | Title |
| 1 | November 27, 2001 | 6,324,279 | Method for exchanging signaling messages in two phases |
| 2 | May 15, 2001 | 6,233,313 | Call detail reporting for lawful surveillance |
| 3 | May 8, 2001 | 6,229,887 | Advanced intelligent network (AIN) functionality for electronic surveillance |
| 4 | December 5, 2000 | 6,157,833 | Method for reducing status reporting in a wireless communication systems |
| 5 | August 1, 2000 | 6,097,798 | Electronic surveillance in a public switched telephone network |
| 6 | June 20, 2000 | 6,078,648 | Advanced intelligent network (AIN) functionality for electronic surveillance |
| 7 | July 13, 1999 | 5,923,744 | Intercepting call communications within an intelligent network |
The patent inventors and their employers
| No. | Inventors | Assignees |
| 1 | Kalmanek, Jr.; Charles Robert (Short Hills, NJ); Marshall; William Todd (Chatham, NJ); Mishra; Partho Pratim (Summit, NJ); Nortz; Douglas M (Red Bank, NJ); Ramakrishnan; Kadangode K. (Berkeley Heights, NJ) | AT&T Corp. (New York, NY) |
| 2 | Farris; Robert D. (Sterling, VA); Bartholomew; Dale L. (Vienna, VA); Albers; Raymond F. (Vienna, VA); Eppert, III; Charles H. (Fairfax, VA); Pershan; Barry (Olney, MD); Michaelis; Daniel C. (Ellicott City, MD); Pilkerton; Michael G. (Fairfax, VA); Huff; Christine W. (Vienna, VA); Lodsun; Jay C. (Vienna, VA); Pomykacz; Walter (Pine Hill, NJ); Nolting; Thomas A. (Holliston, MA) | Bell Atlantic Network Services (Arlington, VA) |
| 3 | Albers; Raymond F. (Vienna, VA); Eppert, III; Charles H. (Fairfax, VA); Pershan; Barry (Olney, MD); Michaelis; Daniel C. (Ellicott City, MD); Pilkerton; Michael G. (Fairfax, VA); Farris; Robert D. (Sterling, VA); Huff; Christine W. (Vienna, VA) | Bell Atlantic Network Services, Inc. (Arlington, VA) |
| 4 | Lawson-Jenkins; Kim (Germantown, MD); Perez; Robert (Bloomingdale, IL); Escue; Marilyn Rochelle (Bloomingdale, IL); Schmidt; Christopher Robert (Wheaton, IL); Moran; Timothy L. (Island Lake, IL) | Motorola, Inc. (Schaumburg, IL) |
| 5 | Albers; Raymond F. (Vienna, VA); Eppert, III; Charles H. (Fairfax, VA); Pershan; Barry P. (Olney, MD); Michaelis; Daniel C. (Ellicott City, MD); Pilkerton; Michael G. (Fairfax, VA); Farris; Robert D. (Sterling, VA); Huff; Christine W. (Vienna, VA) | Bell Atlantic Network Services, Inc. (Arlington, VA) |
| 6 | Albers; Raymond F. (Vienna, VA); Eppert, III; Charles H. (Fairfax, VA); Farris; Robert D. (Sterling, VA); Pershan; Barry P. (Olney, MD); Pilkerton; Michael G. (Fairfax, VA) | Bell Atlantic Network Services, Inc. (Arlington, VA) |
| 7 | Cheng; Jing (Plano, TX) | Ericsson Inc. (Research Triangle Park, NC) |
The patents, their inventors and companies
| Nos. | Inventor | Company |
| 2, 3, 5, 6 | Albers; Raymond F. (Vienna, VA) | Bell Atlantic Network Services (Arlington, VA) |
| 2, 3, 5, 6 | Eppert, III; Charles H. (Fairfax, VA) | Bell Atlantic Network Services (Arlington, VA) |
| 2, 3, 5, 6 | Farris; Robert D. (Sterling, VA) | Bell Atlantic Network Services (Arlington, VA) |
| 2, 3, 5, 6 | Pershan; Barry P. (Olney, MD) | Bell Atlantic Network Services (Arlington, VA) |
| 2, 3, 5, 6 | Pilkerton; Michael G. (Fairfax, VA) | Bell Atlantic Network Services (Arlington, VA) |
| 2, 3, 5 | Michaelis; Daniel C. (Ellicott City, MD) | Bell Atlantic Network Services (Arlington, VA) |
| 2, 3, 5 | Huff; Christine W. (Vienna, VA) | Bell Atlantic Network Services (Arlington, VA) |
| 2 | Bartholomew; Dale L. (Vienna, VA) | Bell Atlantic Network Services (Arlington, VA) |
| 2 | Lodsun; Jay C. (Vienna, VA) | Bell Atlantic Network Services (Arlington, VA) |
| 2 | Pomykacz; Walter (Pine Hill, NJ) | Bell Atlantic Network Services (Arlington, VA) |
| 2 | Nolting; Thomas A. (Holliston, MA) | Bell Atlantic Network Services (Arlington, VA) |
| 1 | Kalmanek, Jr.; Charles Robert (Short Hills, NJ) | AT&T Corp. (New York, NY) |
| 1 | Marshall; William Todd (Chatham, NJ) | AT&T Corp. (New York, NY) |
| 1 | Partho Pratim (Summit, NJ) | AT&T Corp. (New York, NY) |
| 1 | Nortz; Douglas M (Red Bank, NJ) | AT&T Corp. (New York, NY) |
| 1 | Ramakrishnan; Kadangode K. (Berkeley Heights, NJ) | AT&T Corp. (New York, NY) |
| 4 | Lawson-Jenkins; Kim (Germantown, MD) | Motorola, Inc. (Schaumburg, IL) |
| 4 | Perez; Robert (Bloomingdale, IL) | Motorola, Inc. (Schaumburg, IL) |
| 4 | Escue; Marilyn Rochelle (Bloomingdale, IL) | Motorola, Inc. (Schaumburg, IL) |
| 4 | Schmidt; Christopher Robert (Wheaton, IL) | Motorola, Inc. (Schaumburg, IL) |
| 4 | Moran; Timothy L. (Island Lake, IL) | Motorola, Inc. (Schaumburg, IL) |
| 7 | Cheng; Jing (Plano, TX) | Ericsson Inc. (Research Triangle Park, NC) |
Method for exchanging signaling messages in two phases Signaling messages are exchanged for a call between a calling party to a called party. A setup message for the call is exchanged through at least one gate controller. Network resources are reserved for the call based on the exchanged setup messages. An end-to-end message for the call is exchanged without the end-to-end message being routed through the at least one gate controller.
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Call detail reporting for lawful surveillance A lawfully authorized electronic surveillance operation requires reporting of detailed call data for a variety of calls associated with the subject of the surveillance. For at least some specified calls to or from the subject, the invention provides profile data in a switching office serving the subject that causes the office to generate accounting messages for each call, essentially in the same manner as for billing, regardless of whether the calls are billable. Accounting records formed from the messages are uploaded to a server system, for processing and formatting as necessary for delivery to the law enforcement agency. The surveillance could entirely rely on these accounting records for the data reporting. In the preferred embodiments, however, the surveillance also involves monitoring of common channel signaling messages to accumulate call detail records for surveillance purposes, with respect to many calls associated with the subject. The preferred embodiment utilizes a special CLASS code set against the subject's profile in the serving end office. The CLASS code in the profile causes that office to produce the accounting messages for each of the subject's calls processed through the office that does not involve a monitored form of interoffice signaling.
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Advanced intelligent network (AIN) functionality for electronic surveillance Following the Communications Assistance for Law Enforcement Act (CALEA), the FBI developed a standard set of communication services and interfaces. for lawfully authorized electronic surveillance, for both call data recording and content recording. Existing public switched telephone networks use a variety of switches. Not all of the switches in use are capable of performing the routines required by the CALEA standards. In accord with the invention, Advanced Intelligent Network (AIN) and/or Local Number Portability (LNP) functionality controls routing and billing of incoming and outgoing calls for the surveillance target. The routing is handled in such a manner that calls to and from the target are directed to a regional switching office which performs those functions for switches in the region which lack that capability. Through this arrangement call detail records (CDRs) regarding the target are accumulated and transferred to a law enforcement authority. If the surveillance of a particular target also requires monitoring of the content of the target's calls, the calls are routed through a switch or an Intelligent Peripheral (IP) having the requisite surveillance capability.
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Method for reducing status reporting in a wireless communication systems The method for reducing status reporting in a wireless communication system (100), such as a code division multiple access wireless communication system is described. Wireless communication system (100) includes a mobile switching center (202), a base station controller (204), and a plurality of base transceiver stations (240-242). The method includes wireless communication system (100) receiving a mobile communication signal (115) from a mobile station (220), and based on the mobile communication signal (115), invoking delivery of an information element (230) to base station controller (204). The method further includes, based on information element (230), selectively forwarding by base station controller (204) a status message to mobile switching center (202). In addition, the method includes acknowledging, by base station controller (204), successful receipt of information element (230).
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Electronic surveillance in a public switched telephone network Telephone network surveillance is provided for targeting subscriber terminals that receive service through an office lacking a switch with surveillance capability. A foreign exchange line is relied upon to connect the target's line to an office having that capability. Advanced Intelligent Network (AIN) functionality controls routing and billing of incoming and outgoing calls, so that the telephone network operations appear completely normal during the surveillance. In the office normally serving the target's line, a terminating attempt trigger causes that office to obtain instructions from a service control point (SCP), to route the call to the foreign exchange line terminated in the office with the surveillance capability. The instructions also prevent billing of the redirection through the surveillance office to either the called party or the calling party. An off-hook delay trigger set against the foreign exchange line in the surveillance office causes that office to obtain instructions from the SCP, to facilitate billing for the call as if initiated from the target's normal telephone line connection.
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Advanced intelligent network (AIN) functionality for electronic surveillance Following the Communications Assistance for Law Enforcement Act (CALEA), the FBI developed a standard set of communication services and interfaces for lawfully authorized electronic surveillance. For telephone communications, the current industry implementation of compliance with this standard involves deploying certain interface equipment in end office switches of the telephone network. However, the requisite surveillance functionality often resides in a certain limited number of offices. Where the target under surveillance receives service out of an office lacking the surveillance capability, the network routes the call through an office having the requisite capability. For this purpose, the invention relies on intelligent network processing, particularly variations on such processing normally used to implement local number portability. The control node supplying the routing information for local number portability also supplies routing information for surveillance related calls, in order to route calls to and from the target location through an office having the surveillance interfaces in a manner that is entirely hidden from the target and anyone communicating with the target.
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Intercepting call communications within an intelligent network A first service control point (SCP) for providing law enforcement related call interception capability and a second SCP for providing conventional Intelligent Network (IN) subscriber service features are both provided within an IN based telecommunications network. Two types of trigger flags are then associated with a service switching point (SSP) serving a particular subscriber. Where a first trigger flag associated with call interception is set, a query signal requesting interception routing instructions is transmitted from the serving SSP to the first SCP using a pre-stored network address. Where a second trigger flag associated with an IN service is set, a query signal requesting IN service routing instructions is transmitted from the serving SSP to the second SCP using a directory number associated with the associated subscriber.
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