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1533 results about "Subscriber identity module" patented technology

A subscriber identity module or subscriber identification module (SIM), widely known as a SIM card, is an integrated circuit that is intended to securely store the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and computers). It is also possible to store contact information on many SIM cards. SIM cards are always used on GSM phones; for CDMA phones, they are only needed for newer LTE-capable handsets. SIM cards can also be used in satellite phones, smart watches, computers, or cameras.

Automatic and seamless vertical roaming between wireless local area network (WLAN) and wireless wide area network (WWAN) while maintaining an active voice or streaming data connection: systems, methods and program products

A Mobile Station (MS) is able to vertically roam in either direction between two different network, i.e. WWAN and WLAN. The MS is equipped with a dual mode Radio for WWAN and WLAN transmissions. The WLAN Radio is linked to a WLAN Enterprise Gateway Controller (EGC) via a first air link and the WWAN Radio is linked to a WWAN Base Transceiver Station (BTS) via a second air link. The EGC is connected to a Mobile Switching Center (MSC) which is in turn connected to the BTS. An outgoing VoIP call from the WLAN Radio to a remote party on the WWAN will transition or seamlessly switch over to a WWAN connection when the MS detects packet error rates, frequent scale back or consistent signal degradation. Upon such conditions, the WLAN Radio requests the EGC to request an Explicit Call Transfer via the MSC to the MS integrated WWAN Radio portion which automatically accepts the call based on referenced information stored in the user's subscriber identification module (SIM). Once the WWAN Radio is confirmed connected to the remote party on the WWAN, the WLAN Radio drops the WLAN connection. An incoming call between the MS and a remote user via the WWAN will transition to the WLAN Radio when the MS enters WLAN coverage. The MS issues an ECT to the WLAN. After user verification by the WLAN Radio and the EGC signals acceptance of the call, the WWAN Radio connection is dropped and the call is now established between the WLAN Radio and the remote party on the WWAN.

Mobile Telephone Gateway Apparatus, Communication System, and Gateway Operating System

A mobile telephone gateway and communication routing device (MPG) (121) disclosed by the present invention is coupled through an electrical signaling transmission medium with a mobile telephone (100) operative on a first communication network in accordance with a first communication protocol, for adding communication capabilities through at least a second communication network in accordance with a second communication protocol. A mobile communication system (150) is disclosed, comprising MPG (121) placed in-between mobile phone (100) and battery (118) and Subscriber Identification Module (SIM) card (117). MPG connects to the SIM interface of mobile phone (100), using which it wraps SIM functionalities and controls call management. It connects to the data/signaling interface of mobile phone (100), using which it communicates with it, while communicating with the second network using another communication means. It may optionally connects to an accessory device interface of mobile phone (100) such as a Terminal Adapter/Terminal Equipment (TA/TE) or a USB OTG interface, thereby enabling communication between the mobile phone and wireless data terminals of the second network. In a preferred embodiment of the present invention, a MPG is provided for use with a mobile phone operative on a mobile communication network such as GSM, adding communication capabilities through a wireless communication network such as Bluetooth or Wi-Fi. Furthermore, gateway applications are provided to facilitate or support communication through at least the second network in accordance with mobile web protocols and technologies such as Mobile IP, mobile SIP, and mobile VoIP.

Subscriber authentication for unlicensed mobile access signaling

A system for ensuring that a first subscriber in a unlicensed mobile access system is prevented from unauthorized use of a second subscriber's identity when the first subscriber requests services from a mobile station to a core network. The system comprises authenticating means for authenticating a mobile station to an unlicensed mobile access network before higher-layer messages are sent from the mobile station, and thereafter, for authenticating the mobile station to a core network. The system also includes a mobile station with a subscriber identity module that includes an identifying means for identifying the mobile station. The system further includes a unlicensed mobile access network for connecting the mobile station to the core network and for relaying signals between the mobile station and the core network. The unlicensed mobile access network comprises checking means for ensuring that higher-layer messages passing through the unlicensed mobile access network to the core network are from the mobile station that authenticated with the unlicensed mobile access network. The system also includes the core network for implementing transaction control and user services. During authentication between the mobile station and the unlicensed mobile access network, the unlicensed mobile access network stores the identifying means that is associated with the mobile station and after authentication between the mobile station and the core network, the unlicensed mobile access network uses the checking means to examine higher-layer messages that are sent from the mobile station to the core network and to ensure that the identifying means associated with mobile station is stored in the higher-layer message.

System and method for authentication in a mobile communications system

The invention concerns authentication to be performed in a telecommunications network, especially in an IP network. To allow a simple and smooth authentication of users of IP networks in a geographically large area, the IP network's terminal (TE1) uses a subscriber identity module (SIM) as used in a separate mobile communications system (MN), whereby a response may be determined from the challenge given to the identity module as input. The IP network also includes a special security server (SS), to which a message about a new user is transmitted when a subscriber attaches to the IP network. The subscriber's authentication information containing at least a challenge and a response is fetched from the said mobile communications system to the IP network and authentication is carried out based on the authentication information obtained from the mobile communications system by transmitting the said challenge through the IP network to the terminal, by generating a response from the challenge in the terminal's identity module and by comparing the response with the response received from the mobile communications system. Such a database (DB) may also be used in the system, wherein subscriber-specific authentication information is stored in advance, whereby the information in question need not be fetched from the mobile communications system when a subscriber attaches to the network.
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