| 7024688 |
Techniques for performing UMTS (universal mobile telecommunications system) authentication using SIP (session initiation protocol) messages |
| Apr-4-2006 |
A technique for authenticating a user to a server using SIP messages includes forwarding an SIP request from the user agent to the server. The server then forwards a request for authentication to the user... |
| 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... |
| 7013128 |
Terminal device and terminal device operation management system and operation management method |
| Mar-14-2006 |
A portable terminal includes a function to detect its own location. The owner of such terminal registers in advance an area in which he expects to be for a given time slot as conditions for operation.... |
| 6947725 |
Mobile authentication system with reduced authentication delay |
| Sep-20-2005 |
Many examples exist of a mobile node moving between the operational zones of multiple network access points or base stations. To minimize delay in re-authenticating with the network through a new base... |
| 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... |
| 6856800 |
Fast authentication and access control system for mobile networking |
| Feb-15-2005 |
A fast authentication and access control method of authenticating a network access device to a communications network having an access point communicating with a remote authentication (home AAA) server... |
| 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... |
| 6745326 |
Authentication process including setting up a secure channel between a subscriber and a service provider accessible through a telecommunications operator |
| Jun-1-2004 |
Security through data transfers through one or several telecommunications networks is accomplished by providing a data transfer process through a secure channel that enables a subscriber and a service... |
| 6690798 |
Key transforms to discriminate between beams in a multi-beam satellite communication system |
| Feb-10-2004 |
A method and apparatus is described for transforming a key variable used for scrambling mobile data traffic between a terminal and a network in alternate ways based on a value transmitted to the terminal... |
| 6618584 |
Terminal authentication procedure timing for data calls |
| Sep-9-2003 |
A subscriber terminal initiates an authentication procedure with a supporting wireless communications system in response to either a timer expiration based trigger, a state change based trigger, or a combination... |
| 6587680 |
Transfer of security association during a mobile terminal handover |
| Jul-1-2003 |
An existing security association is re-established when a communication handover event occurs in a radio communications system such as IEEE 082.11 or a HIPERLAN wherein the existing security association... |
| 6507908 |
Secure communication with mobile hosts |
| Jan-14-2003 |
A method for secure data communication with a mobile machine in which a data packet is received from the mobile machine having a particular network address. A pool of secure addresses is established and... |
| 6373949 |
Method for user identity protection |
| Apr-16-2002 |
In the method in accordance with the present invention, the subscriber identifier to be sent to the transmission network is encrypted using a cipher key common to a specific group of subscribers, and a... |
| 6370380 |
Method for secure handover |
| Apr-9-2002 |
In a mobile, wireless telecommunications network, communications relating to a mobile terminal can be protected during a handover of the mobile terminal from a first access point to a second access point.... |
| 6240514 |
Packet processing device and mobile computer with reduced packet processing overhead |
| May-29-2001 |
A packet processing and packet transfer scheme capable of reducing the packet processing overhead by eliminating a need to decrypt and re-encrypt the entire packet at a time of relaying encrypted packets.... |
| 6236852 |
Authentication failure trigger method and apparatus |
| May-22-2001 |
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,... |
| 6201958 |
Telecommunications system, mobile terminal and method of registration of a terminal with a telecommunications network |
| Mar-13-2001 |
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... |
| 6157826 |
Authentication key generation method and apparatus |
| Dec-5-2000 |
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... |
| 6141544 |
System and method for over the air activation in a wireless telecommunications network |
| Oct-31-2000 |
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... |
| 6137885 |
Method for enabling direct encrypted communication between two terminals of a mobile radio network, and corresponding station and terminal facilities |
| Oct-24-2000 |
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... |
| 6101380 |
Method of re-using authentication triplets on inter-VLR location updates |
| Aug-8-2000 |
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... |
| 6097817 |
Encryption and decryption in communication system with wireless trunk |
| Aug-1-2000 |
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... |
| 6058301 |
Cellular fraud prevention using selective roaming |
| May-2-2000 |
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... |
| 6047071 |
Network-initiated change of mobile phone parameters |
| Apr-4-2000 |
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... |
| 5991407 |
Subscriber authentication in a mobile communications system |
| Nov-23-1999 |
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... |
| 5940512 |
Roaming method capable of improving roaming registration procedure |
| Aug-17-1999 |
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... |
| 5799084 |
System and method for authenticating cellular telephonic communication |
| Aug-25-1998 |
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... |
| 5748742 |
Fraud detection and user validation system for mobile earth terminal communication device |
| May-5-1998 |
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.... |
| 5668875 |
Method and apparatus for authentication in a communication system |
| Sep-16-1997 |
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... |
| 5661806 |
Process of combined authentication of a telecommunication terminal and of a user module |
| Aug-26-1997 |
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... |
| 5642401 |
System and method of authenticating a service request in a mobile communication system |
| Jun-24-1997 |
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... |
| 5615267 |
Method for adaptively switching between PCS authentication schemes |
| Mar-25-1997 |
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... |
| 5596641 |
Authentication method for mobile communications |
| Jan-21-1997 |
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 (RNDa.sub.1,... |
| 5557654 |
System and method for authenticating subscribers of a transmission network and subscription, having differing authentication procedures, using a common authentication center |
| Sep-17-1996 |
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... |
| 5537474 |
Method and apparatus for authentication in a communication system |
| Jul-16-1996 |
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... |
| 5428665 |
Method of managing supplementary service procedures in GSM/VLR towards HLR |
| Jun-27-1995 |
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... |
| 5400390 |
Method for establishing an inbound call to the mobile telephone in a GSM cellular mobile telephone network |
| Mar-21-1995 |
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... |
| 5377267 |
Method of authentication with improved security for secrecy of authentication key |
| Dec-27-1994 |
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... |
| 5335278 |
Fraud prevention system and process for cellular mobile telephone networks |
| Aug-2-1994 |
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... |
| 5329573 |
Arrangement for obtaining authentication key parameters in a cellular mobile telecommunications switching network |
| Jul-12-1994 |
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... |
| 5241598 |
Rolling key resynchronization in cellular verification and validation system |
| Aug-31-1993 |
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... |
| 5239294 |
Method and apparatus for authenication and protection of subscribers in telecommunication systems |
| Aug-24-1993 |
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... |
| 5237612 |
Cellular verification and validation system |
| Aug-17-1993 |
A system for the validation and verification of base stations and mobile stations within a cellular radio communications network. The system includes a fixed key and a changeable key which are applied... |
| 5233656 |
Telephone installation for the remote loading of telephone rental data of an independent station |
| Aug-3-1993 |
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... |
| 5204902 |
Cellular telephony authentication arrangement |
| Apr-20-1993 |
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)... |
