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"That the automobile has practically reached the limit of its development is suggested by the fact that during the past year no improvements of a radical nature have been introduced."
Scientific American ; Jan. 2 edition, 1909
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| Number | Title | Issue Date |
| 6236852 | Authentication failure trigger method and apparatus A wireless communications network and method include a home system, a serving system, and authentication failure triggers. The home system includes an authentication center, a network information element, and a prescribed authentication capable mobile sta... | 05/22/2001 |
| 6201958 | Telecommunications system, mobile terminal and method of registration of a terminal with a telecommunications network The invention relates to a telecommunications network comprising at least a radio base station and a mobile terminal suitable for sending a secret authentication code to the radio station for making itself known to said network. The invention notably prov... | 03/13/2001 |
| 6157826 | Authentication key generation method and apparatus A method generates an authentication key to be used in an authentication algorithm at position at which a mobile station's subscriber is located. First, when there is a request to create the authentication key by a customer service center (CSC), at an aut... | 12/05/2000 |
| 6141544 | System and method for over the air activation in a wireless telecommunications network There is disclosed a system and method for over the air (OTA) activation of a mobile station in a wireless telecommunications network. During activation, a network OTA processor requests the data configuration of the mobile station. The mobile station may... | 10/31/2000 |
| 6137885 | Method for enabling direct encrypted communication between two terminals of a mobile radio network, and corresponding station and terminal facilities A method for enabling encrypted communication to be performed directly in a single hop or merely directly between two terminals of a mobile radio network by satellite and/or of the GSM/DCS type, after one of said terminals has called via a fixed radio sta... | 10/24/2000 |
| 6101380 | Method of re-using authentication triplets on inter-VLR location updates A method of re-using authentication triplets on inter-VLR location updates in a wireless communication network. The method reduces the amount of work on the MSC and HLR, and thus significantly increases the capacity of a high mobility MSC and the HLR to i... | 08/08/2000 |
| 6097817 | Encryption and decryption in communication system with wireless trunk A communication system having a wireless trunk for connecting multiple phone lines over wireless communication links to a cellular network comprises a central telephone switch, such as a private branch exchange or key system, connected through one or more... | 08/01/2000 |
| 6058301 | Cellular fraud prevention using selective roaming A method of preventing roaming fraud in cellular telephone systems using different levels of roaming privileges for individual subscribers. When the subscriber initiates a call in a foreign service area that exceeds their roaming privileges, an authentica... | 05/02/2000 |
| 6047071 | Network-initiated change of mobile phone parameters The procedure for Over-The-Air Parameter Administration (OTAPA) utilizes the over-the-air programming protocol and procedures which support the Over-The-Air Service Provisioning (OTASP) feature in accordance with established industry standards (TIA/EIA/IS... | 04/04/2000 |
| 5991407 | Subscriber authentication in a mobile communications system An authentication procedure in a Global System for Mobile Communications (GSM)-based mobile communications system relies on a challenge and response principle. A 32-bit Signed Response (SRES) parameter is calculated by an A3 algorithm from a 128-bit rando... | 11/23/1999 |
| 5940512 | Roaming method capable of improving roaming registration procedure A roaming terminal enciphers a subscriber's number thereof using a public key of a home network and sends the enciphered subscriber's number to the home network via a roamed network. The home network deciphers the enciphered subscriber's number using a se... | 08/17/1999 |
| 5799084 | System and method for authenticating cellular telephonic communication A system and method for authenticating a mobile station (MS) in a cellular network. The present invention is an authentication technique that uses the AMPS standard, or a derivative thereof, can authenticate a MS automatically, does not require modificati... | 08/25/1998 |
| 5748742 | Fraud detection and user validation system for mobile earth terminal communication device In a mobile satellite system, a mobile communication system includes a fraud detection and user validation system and method for commissioning the mobile communication system in the mobile satellite system. The method includes the steps of generating a fi... | 05/05/1998 |
| 5668875 | Method and apparatus for authentication in a communication system A method and apparatus for authenticating a roaming subscriber. In a preferred embodiment, a subscriber receives a challenge that is in a format of a local authentication protocol, and determines whether the local authentication protocol is the subseriber... | 09/16/1997 |
| 5661806 | Process of combined authentication of a telecommunication terminal and of a user module The terminal and the user module are authenticated in a combined manner on the basis of an authentication key calculated on the one hand by the terminal and on the other hand by the network. A session key is firstly calculated by the user module on the ba... | 08/26/1997 |
| 5642401 | System and method of authenticating a service request in a mobile communication system An authentication system includes a mobile station, a base station, a mobile station controller, and a data base. When the base station determines that authentication is required, an authentication calculation request is generated with respect to the mobi... | 06/24/1997 |
| 5615267 | Method for adaptively switching between PCS authentication schemes A method for adaptively switching between the WS and S authentication schemes is based on the customer's usage. A first preferred embodiment provides a 2n-1 state automaton (where n>1), which switches from the WS Scheme to the S Scheme when the automaton ... | 03/25/1997 |
| 5596641 | Authentication method for mobile communications In the preliminary authentication stage, the mobile station (35) is authenticated by sending from the home network (30) to the roamed network (31), a plurality of pairs of first random numbers (RNDa1, . . . , RNDan) and calculation r... | 01/21/1997 |
| 5557654 | System and method for authenticating subscribers of a transmission network and subscription, having differing authentication procedures, using a common authentication center A telecommunication system and a method for authenticating a subscriber in a telecommunication system. The system includes a transmission network having subscriber identity codes of a first format and a first subscriber authentication procedure. An exchan... | 09/17/1996 |
| 5537474 | Method and apparatus for authentication in a communication system A method and apparatus for authenticating a roaming subscriber. In a preferred embodiment, a subscriber receives a challenge that is in a format of a local authentication protocol, and determines whether the local authentication protocol is the subscriber... | 07/16/1996 |
| 5428665 | Method of managing supplementary service procedures in GSM/VLR towards HLR In a Mobile Services Switching Center/Visitor Location Register (MSC/VLR), requests (made by a mobile station (MS)) for supplementary services may require processing only by the MSC/VLR, or they may require processing by a Home Location Register (HLR). A ... | 06/27/1995 |
| 5400390 | Method for establishing an inbound call to the mobile telephone in a GSM cellular mobile telephone network A method for setting up an inbound call to a mobile telephone MS in a cellular mobile telephone network. In the method, a mobile switching center (MSC) requests a home location register (HLR) to provide call routing information, the home location register... | 03/21/1995 |
| 5377267 | Method of authentication with improved security for secrecy of authentication key A method of subscriber authentication suitable for a roaming service in a telecommunication capable of realizing an improved security for the secrecy of the authentication key. In this method, an authentication data Indicative of a tentative authenticatio... | 12/27/1994 |
| 5335278 | Fraud prevention system and process for cellular mobile telephone networks An improved mobile telephone system, including a process and apparatus for detecting fraudulent requests for roamer cellular telephone services before the requested service is granted. The improvement comprises a distributed, readily updatable fraud preve... | 08/02/1994 |
| 5329573 | Arrangement for obtaining authentication key parameters in a cellular mobile telecommunications switching network 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 is provided which performs the functions of the mo... | 07/12/1994 |
| 5241598 | Rolling key resynchronization in cellular verification and validation system A system for the resynchronization of a rolling key used as an input among a plurality of inputs to an authentication algorithm executed in a mobile station and in a radio network providing service to the mobile station. In one aspect of the system, the n... | 08/31/1993 |
| 5239294 | Method and apparatus for authenication and protection of subscribers in telecommunication systems Radio frequency based cellular telecommuication systems often require a subscriber (10) to maintain a proprietary identifier (19) or serial number (18) which is transmitted to a fixed network communication unit (20) to verify the authenticity of the subsc... | 08/24/1993 |
| 5233656 | Telephone installation for the remote loading of telephone rental data of an independent station In a telephone installation, telephone rental data is loaded remotely into an independent station in the following manner. In response to a request for a call coming from the independent station and in the presence of a load request signal, a control means sea... | 08/03/1993 |
| 5204902 | Cellular telephony authentication arrangement A secure cellular telephony arrangement where the mobile unit maintains a secret that is assigned to it by the service provider, and which is known to the provider (home cellular geographic service are--CGSA) but not to any other base station. A shared se... | 04/20/1993 |
