Patents by Inventor Bagher Rouhollah Zadeh

Bagher Rouhollah Zadeh 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).

  • Patent number: 6516195
    Abstract: A method and system for optimizing mobile telecommunications networks utilizing geographical positioning information. Initially, a particular telecommunications event, such as a handover event, call set-up event, a dropped call event, or a high bit error rate event, is designated, such that an occurrence of the particular telecommunications event automatically triggers geographical positioning of a mobile unit within a mobile telecommunications network. A geographical positioning request is then transmitted to a mobile location center within the telecommunications network, in response to an occurrence of the particular telecommunications event. Thereafter, geographical positioning information associated with the particular telecommunications event and the mobile unit is determined, in response to the transmission of the geographical positioning request to the mobile location center. The geographical positioning information is thereafter stored in a database within the mobile telecommunications network.
    Type: Grant
    Filed: May 14, 1999
    Date of Patent: February 4, 2003
    Assignee: Ericsson Inc.
    Inventors: Bagher Rouhollah Zadeh, Shahrokh Amirijoo
  • Patent number: 6324406
    Abstract: A method for collecting radio signal timing values for use in determining the location of a mobile station in a wireless network. The method includes acquiring a radio signal timing value from the mobile station's serving base transceiver station. A first handover of the mobile station is initiated from the serving base transceiver station to a second base transceiver station. A radio signal timing value is determined as part of the handover procedure. After the first handover is completed, a second handover of the mobile station is initiated from the second base transceiver station to a third base transceiver station, wherein a third timing value is determined as part of the handover procedure. The second handover is also completed.
    Type: Grant
    Filed: April 27, 1998
    Date of Patent: November 27, 2001
    Assignee: Ericsson Inc.
    Inventor: Bagher Rouhollah Zadeh
  • Patent number: 6256505
    Abstract: In a base station for use in a mobile communication system for communication with mobile subscribers over a plurality of radio channels, an improved transceiver unit is provided including a traffic controller handling downlink and uplink communication traffic with mobile subscribers over the plurality of radio channels, and a measuring device measuring arrival times of burst signals from a mobile subscriber communicating on a select one of the radio channels, or from a mobile subscriber communicating on another transceiver unit, on one of the plurality of radio channels.
    Type: Grant
    Filed: May 28, 1998
    Date of Patent: July 3, 2001
    Assignee: Ericsson lnc.
    Inventors: Christopher Hugh Kingdon, Bagher Rouhollah Zadeh, Anders Thomas Holmring, Lars-Goran Lund
  • Patent number: 6185428
    Abstract: A system and method that makes more efficient utilization of BTS resources when BTSs are employed in time of arrival (TOA) measurements as is common in mobile positioning operations. A maximum signaling delay is assumed for which BTS resource assignment is delayed by a default time span in the event of an impending TOA measurement thereby allowing the BTS availment of the resources which would otherwise be idle yet assigned and therefore unavailable for other BTS functions during the period of signaling delay. The period of resource assignment delay may be increased or decreased, the actual adaption of the delay dependent on the true signaling delay.
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: February 6, 2001
    Assignee: Ericsson Inc
    Inventors: Christopher H. Kingdon, Andres Thomas Holmring, Bagher Rouhollah Zadeh