Steven H Blumenthal

US Patent:

7203482, Apr 10, 2007

Filed:

Apr 30, 2004

Appl. No.:

10/836056

Inventors:

Steven Blumenthal - Lexington MA, US
Oliver C. Ibe - Andover MA, US

International Classification:

H04M 1/66

US Classification:

455411, 4554351, 455455, 4554261, 370338, 370328, 370352

Abstract:

A mechanism to permit the cryptographic authentication of a mobile device in the cellular carrier's network when the device is present in the 802. 11 network, wireless LAN, served by a Cellular Controller and not connected directly to the cellular carrier's network via a radio link is disclosed. The Cellular Controller acts as a proxy for the mobile device when the device is in a building served by an 802. 11 wireless LAN. The solutions features the separation of a mobile device's radio function from its ANSI-41 authentication mechanism to permit the proxy function to work and to not have to duplicate the ANSI-41 authentication data and CAVE algorithm.

US Patent:

7356015, Apr 8, 2008

Filed:

Apr 30, 2004

Appl. No.:

10/836057

Inventors:

Oliver C. Ibe - Andover MA, US
Steven Blumenthal - Lexington MA, US

International Classification:

H04Q 7/24
H04Q 7/20
H04M 1/66

US Classification:

370338, 455411, 455445

Abstract:

A method and associated system enables seamless data roaming and handoff between the wireless local area network (WLAN) and the wireless wide-area network (WWAN). This method enables a mobile device to originate a data connection in the WLAN and have this data connection be automatically handed off to the WWAN without losing the connection when the user goes outside the range of the WLAN. Similarly, it enables a mobile device to originate a data connection in the WWAN and have this data connection be automatically handed off to the WLAN without losing the connection when the user loses the signal of the WWAN. This solution assumes that the user has subscribed to data services from a cellular carrier that will authenticate the user before permitting the handoff.

US Patent:

7502615, Mar 10, 2009

Filed:

Jul 18, 2005

Appl. No.:

11/183534

Inventors:

Michael T. Wilhoite - Chicago IL, US
Inderdeep Singh - Glenview IL, US
Steven H. Blumenthal - Lexington MA, US

Assignee:

Bridgeport Networks, Inc. - Chicago IL

International Classification:

H04W 36/00
H04W 4/00
H04M 3/42

US Classification:

455442, 370331

Abstract:

A telephone system supports communication with user devices over both a cellular radio network as well as over an Internet Protocol (IP) network, and enables roaming and active call handoff between cellular and IP domains. Components of the system interact with conventional cellular telephone systems, for example, by emulating behavior of control components, providing proxy services for conventional components, transporting cellular telephone control communication over IP connections, or by simulating cellular operating characteristics of user devices operating in an IP domain.

US Patent:

20070070976, Mar 29, 2007

Filed:

Jul 25, 2006

Appl. No.:

11/492698

Inventors:

Harry Mussman - Bedford MA, US
Wen Han - Lexington MA, US
Michael Wilhoite - Chicago IL, US
Lee Goodman - Tyngsboro MA, US
Tom Joyner - Chicago IL, US
Sanjay Jhawar - Chicago IL, US
Steven Blumenthal - Lexington MA, US

International Classification:

H04L 12/28

US Classification:

370351000, 455445000

Abstract:

A telecommunication approach provides telephone service to subscribers on terminals registered on a mobile network that are consistent with the services provided to those subscribers at terminals on a fixed communication network. For instance, the subscriber on the terminals on the mobile network may have access to mid-call features and private dialing plans that are supported using elements on the fixed network, and calls placed to the subscribers at addresses (e.g., wireline numbers or SIP addresses) on the fixed network may be delivered to their terminals on the mobile network.

US Patent:

20070234404, Oct 4, 2007

Filed:

Apr 3, 2006

Appl. No.:

11/397313

Inventors:

Ivan Bogdanovic - Brookline MA, US
Justin Aborn - Hingham MA, US
Steven Blumenthal - Lexington MA, US
Sanjay Jhawar - Chicago IL, US

International Classification:

H04L 9/32

US Classification:

726003000

Abstract:

Application layer authentication of a data-network based application makes use of a SIM function accessible to the application and telephone network authentication service accessible to a server to the application. For example, the application uses SIP (Session Initiation Protocol) for communication with the server and the authentication service is provided via a GSM based telephone network. In one implementation, a device (a “dongle”) includes an authentication module, application software, and an interface for communicating with a remote server over a data communication network. The application software includes instructions for using the authentication module to authorize an application layer interaction with the remote server.

US Patent:

20070238465, Oct 11, 2007

Filed:

Apr 5, 2006

Appl. No.:

11/398773

Inventors:

Wen Han - Lexington MA, US
Michael Wilhoite - Chicago IL, US
Steven Blumenthal - Lexington MA, US

International Classification:

H04Q 7/20

US Classification:

455445000, 455435100, 455428000, 455435200

Abstract:

Telecommunication services are provided to users. User information for a first identity of a user in a first telecommunication network is maintained. An active presence for a mobile device for the user is maintained by means of a second identity in a second telecommunication network. A presence of the user in the first network is emulated using a gateway system that couples the first telecommunication network to the second telecommunication network.

US Patent:

20070263608, Nov 15, 2007

Filed:

Apr 4, 2006

Appl. No.:

11/397325

Inventors:

Wen K. Han - Lexington MA, US
Steven H. Blumenthal - Lexington MA, US

International Classification:

H04L 12/66

US Classification:

370356

Abstract:

Voice communication between a mobile station and a packet-based voice communication system is handled. A communication interface for mobile station access to a telecommunication network over a public data network according to a first protocol is emulated at a gateway system. Communications pass between the gateway and the packet-based voice communication system according to a second protocol. Control communication information passing between the mobile station and the packet-based voice communication system is converted.

US Patent:

20080132279, Jun 5, 2008

Filed:

Dec 4, 2006

Appl. No.:

11/566616

Inventors:

Steven H. Blumenthal - Lexington MA, US

International Classification:

H04B 1/38

US Classification:

455558

Abstract:

An apparatus, such as a removable computer device (e.g., a USB device), includes application software stored on a computer-readable medium which may be loaded to computer coupled to the device. An interface on the device is used to couple the apparatus to a computer and to pass the application software to the computer. The application software can include a “soft phone” application. An authentication module on the device provides authentication information, for example from a Subscriber Identification Module (SIM) through the interface, and the application software includes instructions for using the authentication information in a communication exchange over a data network using a cellular telephone protocol with a network element coupled to a cellular telephone network. In some examples, the protocol is a GSM protocol and the network element is Unlicensed Mobile Access (UMA) Network Controller (NC).