Patents by Inventor Hakan Ernam

Hakan Ernam has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Distributed signaling message routing in a scalable wireless communication system
    Patent number: 6553227
    Abstract: A wireless communication system constructed according to the present invention assigns each serviced mobile unit to a serving mobile switching center to minimize mobility management overhead and to equalize loading among a plurality of mobile switching centers. The wireless communication system includes the plurality of mobile switching centers and a base station system which includes a plurality of base station controllers, each of which couples to a plurality of base stations. A plurality of mobile units served by the system are assigned to the mobile switching centers so that loading is equalized. In one particular construction of the wireless communication system, a dispatching switch couples the base station system to the plurality of mobile switching centers and performs the assignments of the mobile units. In an example of operation, upon attachment of a mobile unit, the dispatching switch determines loading of each of the mobile switching centers.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: April 22, 2003
    Assignee: Nortel Networks LTD
    Inventors: Joseph S. M. Ho, Nhut Nguyen, Hakan Ernam
  • Automated wireless network design
    Patent number: 6539221
    Abstract: The present invention is a system for optimizing an existing wireless network and additions to an existing network. The system determines a value representing estimation of traffic in discrete bins within a geographic area. The traffic estimation includes a distribution of handover and new cell traffic based at least in part on the presence of a road in any bin or the proximity of a bin to a handover boundary. The cell coverage and carrier allocations of existing cells are adjusted in view of the traffic estimation.
    Type: Grant
    Filed: December 28, 1999
    Date of Patent: March 25, 2003
    Assignee: Nortel Networks Limited
    Inventors: Mini Vasudevan, Carlos Garcia, Chang Yu, Hakan Ernam, Will Egner, Sairam Subramanian, Kenni Rasmussen
  • Scalable wireless network architecture based on subscriber distribution
    Patent number: 6148201
    Abstract: A wireless communication system constructed according to the present invention assigns mobile units to equalize loading among a plurality of mobile switching centers. The wireless communication system includes the plurality of mobile switching centers and a base station system which includes a plurality of base station controllers, each of which couples to a plurality of base stations. A plurality of mobile units served by the system are assigned to the mobile switching centers so that loading is equalized. In one particular construction of the wireless communication system, a dispatching switch couples the base station system to the plurality of mobile switching centers and performs the assignments of the mobile units. In an example of operation, upon attachment of a mobile unit, the dispatching switch determines loading of each of the mobile switching centers.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: November 14, 2000
    Assignee: Nortel Networks Corporation
    Inventors: Hakan Ernam, Christopher S. Reece, Jim Xu
  • Method and apparatus for wireless network architecture based on subscriber distribution
    Patent number: 6097951
    Abstract: A method and apparatus for scaling a wireless telecommunications network having an architecture based upon subscriber distribution includes providing a base station subsystem (BSS) and a pool of mobile switching centers (MSCs) interconnected with one another. The mobile switching centers include visitor location registers (VLRs). Lastly, a dispatcher mobile switching center (DMSC) is provided, the dispatcher mobile switching center being coupled between the base station subsystem (BSS) and the pool of mobile switching centers (MSCs) for establishing communication between the base station subsystem (BSS) and the pool of mobile switching centers (MSCs). The dispatcher mobile switching center (DMSC) further provides for distributing mobile station subscribers and call related work among the pool of mobile switching centers (MSCs).
    Type: Grant
    Filed: August 6, 1998
    Date of Patent: August 1, 2000
    Assignee: Northern Telecom Limited
    Inventors: Hakan Ernam, Jim Xu, Christopher S. Reece
  • Distributed signaling message routing in a scalable wireless communication system
    Patent number: 6091953
    Abstract: A wireless communication system constructed according to the present invention assigns each serviced mobile unit to a serving mobile switching center to minimize mobility management overhead and to equalize loading among a plurality of mobile switching centers. The wireless communication system includes the plurality of mobile switching centers and a base station system which includes a plurality of base station controllers, each of which couples to a plurality of base stations. A plurality of mobile units served by the system are assigned to the mobile switching centers so that loading is equalized. In one particular construction of the wireless communication system, a dispatching switch couples the base station system to the plurality of mobile switching centers and performs the assignments of the mobile units. In an example of operation, upon attachment of a mobile unit, the dispatching switch determines loading of each of the mobile switching centers.
    Type: Grant
    Filed: November 16, 1998
    Date of Patent: July 18, 2000
    Assignee: Nortel Networks Limited
    Inventors: Joseph S. M. Ho, Nhut Nguyen, Hakan Ernam