Nortel Networks Corporation

Cecil L Taylor

Patricia A Landgren

Serge M Manning

Jerry Louis Mizell

Mark Hanson

Peter W Wenzel

David J Lauson

Disclosed is an apparatus providing minimal systems alterations in non-GSM cellular systems wishing to incorporate GSM GPRS messaging capability. This is accomplished by giving a registering terminal or MS an IP address for use in receiving both signaling and traffic data messages rather than using the SGSN as the traffic receiving entity and forwarding traffic to the MS from the SGSN and requiring signaling messages to be transmitted from the MSC to the MS by other means. This approach simplifies the integration of GPRS capability into any non-GSM configuration cellular system by providing a generic way to exchange signaling information between any MSC, having a known IP address, and any MS with an assigned IP address.

Tunneling signaling method and apparatus

A method of updating mobility information for a Mobile End System (MES) in a Cellular Digital Packet Data network uniquely identifies a Serving Mobile Data Intermediate System (MDIS) in a ReDirect Request (RDR) so that the Location Update Service (LUS) can complete its location updating operations. Upon attachment of the MES to the Serving MDIS, a RDR is created that includes a LUS address of the Serving MDIS and a Forwarding Service address (FSA) of the Serving MDIS. The RDR is then transmitted to a Home MDIS corresponding to the MES via a network backbone. The Forwarding Service address of the MES is then updated to the Forwarding Service address of the Serving MDIS. Then, the Home MDIS creates an RDC that includes as a destination address the LUS address of the Serving MDIS and transmits to the RDC to the Serving MDIS via the network backbone. Once the LUS operations are complete, data intended for the MES received at the Home MDIS is routed based upon the FSA of the Serving MDIS. The data is received by the Home MDIS and routed via a Mobile Data Base Station to the MES. In an alternate operation, the LUS address of the Serving MDIS is not appended to the RDR by the Serving MDIS but is be appended to the RDR by an Intermediate MDIS should the RDR be routed to the Home MDIS by way of an intermediate MDIS. When the Intermediate MDIS receives the RDR, it determines that it is not the Home MDIS and appends the LUS address to the RDR. The Intermediate MDIS then transmits the RDR to the Home MDIS.

System and method of operation for correctly routing location update service messages in a cellular digital packet data system

An interface device for faxing documents over a wireless network includes circuitry for emulating the public switched telephone network (PSTN) for communicating with an analog fax machine. The circuitry receives and stores a document image from the fax machine. It then prompts a wireless transceiver to establish a call connection. Once a call connection is created to a destination fax through the wireless network the interface device transmits the stored document image. The inventive method includes the steps of communicating with a fax over by means of one protocol to receive a document image, storing the document image, and transmitting the document image by means of a second protocol.

Growing community of inventors

Plano, TX, United States of America

Cecil L Taylor