| 7020456 |
Method and system for authentication of units in a communications network |
| Mar-28-2006 |
A method of granting, to a user communications device, access to a service provided by a plurality of service communications devices where an access key code is generated during an initial communications... |
| 7020455 |
Security reconfiguration in a universal mobile telecommunications system |
| Mar-28-2006 |
The invention protects the security of a communication between a mobile radio and a radio access network (RAN). A connection is established through the RAN to support a communication with the mobile radio.... |
| 6963740 |
Secure enterprise communication system utilizing enterprise-specific security/trust token-enabled wireless communication devices |
| Nov-8-2005 |
An enterprise communications system for implementing, accessing, using, and managing enterprise-specific resources includes one or more Mandate clients, each Mandate client including a wireless communication... |
| 6915124 |
Method and apparatus for executing secure data transfer in a wireless network |
| Jul-5-2005 |
A method for executing secure data transfer between a communication device and an application server in a wireless network, in which a request requiring a secure transaction of data is sent from either... |
| 6909887 |
Method of controlling a channel between a radio terminal and a cellular radiocommunication infrastructure, and access network implementing such a method |
| Jun-21-2005 |
The infrastructure has a core network, radio network controllers linked to the core network and base stations provided with radio interfaces and each linked to one of the controllers. Ciphered information... |
| 6782102 |
Multiple format secure voice apparatus for communication handsets |
| Aug-24-2004 |
Multiple format secure voice apparatus for communication handsets includes a core unit with a speaker, a microphone, a keypad, and a display. The core unit also includes an audio circuit coupled to the... |
| 6768903 |
Method of controlling a channel between a radio terminal and a cellular radiocommunication infrastructure, and access network implementing such a method |
| Jul-27-2004 |
Ciphered information is transmitted over a first communication path in circuit mode between a core network and a terminal, passing through a first master controller, then over a second path between the... |
| 6768797 |
Method and apparatus for encrypting data in a wireless communication system |
| Jul-27-2004 |
In a communications system, a method of transforming a set of message signals representing a message comprising the steps of first encoding one of the set of message signals in accordance with a first... |
| 6754834 |
Technique for generating correlation number for use in lawful interception of telecommunications traffic |
| Jun-22-2004 |
A technique for generating a correlation number for use in lawful interception of telecommunications traffic includes handling one of either a "PDP (Packet Data Protocol) context activation" or "Start... |
| 6577732 |
Hierarchical encryption technique for dense wavelength division multiplexed systems using a wavelength bus architecture |
| Jun-10-2003 |
Transmission-based data security is provided in dense wavelength division multiplexing systems using a transmission scheme that incorporates hierarchical scrambling techniques with a unique multiplexing... |
| 6370373 |
System and method for detecting cloning fraud in cellular/PCS communications |
| Apr-9-2002 |
A system and method for proactively detecting cloning fraud in a cellular mobile telephone environment are discussed. Information is collected which corresponds to registration notifications of the cellular... |
| 6278781 |
Wireless telephony with steganography |
| Aug-21-2001 |
The present invention relates to wireless communication systems, such as cellular systems and PCS systems, and more particularly relates to methods and systems for reducing theft of wireless telephony... |
| 6112079 |
Method and apparatus for providing fraud protection mediation in a mobile telephone system |
| Aug-29-2000 |
The system and method of the present invention facilitates an improved Home Location Register (HLR) that includes a fraud protection mediation module for use in a mobile telephone system. The fraud protection... |
| 6097939 |
Method and apparatus for event data maintenance per MIN/ESN pair in a mobile telephone system |
| Aug-1-2000 |
A method and apparatus for allowing an Authentication Center (AC) in a cellular telephone system to store and access event a predefined number of maintenance data events on a per-MIN/ESN basis. |
| 6035043 |
Cellular telephone manifest system |
| Mar-7-2000 |
This invention relates to a cellular telecommunications systems that records in the cellular telephone all the telephone calls made by that particular cellular telephone. This enables the owner or agent... |
| 5905949 |
Cellular telephone fraud prevention system using RF signature analysis |
| May-18-1999 |
Apparatus for identifying wireless subscriber units and for determining if access to a communications network should be granted. A plurality of wireless subscriber units each generates a wireless subscriber... |
| 5765107 |
Detection and identification of a fraudulent wireless telephone user |
| Jun-9-1998 |
In a cellular telephone system, a method for detecting and identifying a fraudulent user who cloned the cellular subscriber's electronic serial number and mobile identification number to gain unauthorized... |
| 5715518 |
Adaptive waveform matching for use in transmitter identification |
| Feb-3-1998 |
A system and method extracts a portion of a transmitted waveform and compares the transmission characteristics of the extracted waveform to determine if they match a stored fingerprint associated with... |
| 5689563 |
Method and apparatus for efficient real-time authentication and encryption in a communication system |
| Nov-18-1997 |
Radio frequency based cellular telecommunication systems often require both subscriber units and communication units of a fixed network communication system to maintain secret data which may be used to... |
| 5517568 |
Method of detecting unauthorized use of a wireless communication channel |
| May-14-1996 |
A method for detecting unauthorized use of a communication unit (102) in a secure wireless communication system includes monitoring (201) a wireless communication channel (103) presently supporting a secure... |
| 5509075 |
Method of detecting unauthorized use of a communication unit in a secure communication system |
| Apr-16-1996 |
A method for detecting unauthorized use of a communication unit in a secure wireless communication system includes receiving, by a central controller, a service request from the communication unit via... |
| 5467382 |
Method and apparatus for clone detection in a communication system |
| Nov-14-1995 |
A system for clone detection within a communication system includes a message generator for generating a message to a subscriber having a first identifier and forwarding the message for transmission over... |
| 5465387 |
Adaptive fraud monitoring and control |
| Nov-7-1995 |
Access to a resource such as a telecommunications system is monitored and prevented adaptively on a real-time basis by establishing with the customer, a steady state low level of surveillance and arbitrary... |
| 5448760 |
Cellular telephone anti-fraud system |
| Sep-5-1995 |
Authorized use of a wireless subscriber system, e.g. cellular telephone system, is distinguished from unauthorized use by electronically observing a plurality of external signal traits which represent... |
| 5379343 |
Detection of unauthorized use of software applications in communication units |
| Jan-3-1995 |
A monitoring computer monitors the communications occurring within at least one communication system for at least one unique communication unit identification code (unit ID code) associated with a communication... |
| 5329591 |
Transmitter identification and validation system and method |
| Jul-12-1994 |
A transmitter identification and validation system and method are operable to receive a signal transmitted by a subject transmitter and produce first and second output signals corresponding to the received... |
| 5309501 |
Arrangement for detecting fraudulently identified mobile stations in a cellular mobile telecommunications network |
| May-3-1994 |
Apparatus and methods for providing cellular mobile telecommunication service in accordance with the requirements of the Global Systems for Mobile Communications (GSM) standard. A modular switching system... |
| 5243652 |
Location-sensitive remote database access control |
| Sep-7-1993 |
A communication system includes a remote mobile node which acquires time-correlated data of its actual position from a global positional system (GPS), and securely transmits the information as a position... |
| 5086467 |
Dummy traffic generation |
| Feb-4-1992 |
In a secure communication system, a method for generating dummy traffic to forestall cryptanalytic attack by traffic analysis. Both the dummy traffic signal and certain characteristics of the dummy transmissions,... |
