Data packet radio service with enhanced mobility management
Patent 6104929 Issued on August 15, 2000. Estimated Expiration Date: 
June 4, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 4, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for providing anonymous data transfer in a communication system Electronic massaging network System and method for providing packet data and voice services to mobile subscribers Method, device and communication network for avoiding collisions in radio communication Method for the encryption of data transfer Patent #: 5987137 InventorsAssigneeApplicationNo. 090186 filed on 06/04/1998US Classes:455/445, Call routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing)370/379, Data memory addressing370/465, Adaptive455/426.1, Including other radio communication system (e.g., cordless telephone, paging, trunking, etc.)455/560Switching unit detail (e.g., mobile telephone switching office (MTSO), base station controller (BSC), etc.)ExaminersPrimary: Vo, NguyenAssistant: Appiah, Charles N. Attorney, Agent or FirmForeign Patent References
International ClassesH04Q 007/20H04B 001/38 AbstractThe address of a latest Serving GPRS Support Node (SGSN) is provided to a Gateway GPRS Support Node (GGSN) by a special Update SGSN Address Request message which is sent from the SGSN to the GGSN. For a subscriber whose subscription permits, the address of the latest SGSN node is sent in the Update SGSN Address Request message for a qualified packet data protocol (PDP) context. A qualified PDP context (1) has a static PDP address; and (2) is not activated. The Update SGSN Address Request message can be sent from the SGSN to the GGSN in either a GPRS Attach scenario or an Inter-SGSN Routing Area Update Scenario. In response to the Update SGSN Address Request message, the GGSN sends an Update SGSN Address Response message which advises whether the updating of the address for the SGSN at the GGSN has been successful.Other References
Field of SearchCall routing (e.g., to prevent backhaul, routing efficiency, least cost, or alternate routing)Switching unit detail (e.g., mobile telephone switching office (MTSO), base station controller (BSC), etc.) Having a plurality of contiguous regions served by respective fixed stations Channel assignment Using messages having an address field as header Switching a message which includes an address header Bridge or gateway between networks Adaptive Converting between protocols COMPUTER-TO-COMPUTER PROTOCOL IMPLEMENTING MULTIPLE NETWORK INTERCONNECTING Request for retransmission Retransmission if no ACK returned Feedback to transmitter for comparison | |
