Patents Assigned to CSI Wireless LLC
  • System and method for WLAN signal strength determination
    Patent number: 7020442
    Abstract: A method for WLAN signal strength determination comprises receiving a WLAN RF signal; converting the WLAN RF signal to a voltage proportional to the signal; comparing the voltage to a first reference voltage; and outputting data corresponding to WLAN RF signal strength if the voltage is greater than the first reference voltage.
    Type: Grant
    Filed: October 2, 2002
    Date of Patent: March 28, 2006
    Assignee: CSI Wireless LLC
    Inventors: Hamid Najafi, Xiping Wang
  • System and method for enabling and disabling devices based on RSSI analysis
    Patent number: 6853840
    Abstract: The system comprises a wireless transceiver with a processor for measuring RSSI in received signals. The processor analyzes fade duration or fade frequency in the received signals to determine if the transceiver is moving. If the transceiver is moving, then the processor can send a command to disable a fixed wireless terminal in one embodiment. In another embodiment, if the transceiver is not moving, then the processor can send a command to place a GPS receiver into a power conservation mode.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: February 8, 2005
    Assignee: CSI Wireless LLC
    Inventor: Hamid Najafi
  • System and method for WLAN signal strength determination
    Publication number: 20040203433
    Abstract: A method for WLAN signal strength determination comprises receiving a WLAN RF signal; converting the WLAN RF signal to a voltage proportional to the signal; comparing the voltage to a first reference voltage; and outputting data corresponding to WLAN RF signal strength if the voltage is greater than the first reference voltage.
    Type: Application
    Filed: October 2, 2002
    Publication date: October 14, 2004
    Applicant: CSI Wireless LLC
    Inventors: Hamid Najafi, Xiping Wang
  • Wireless Phone apparatus having an emergency beacon and method for activation thereof
    Publication number: 20040203843
    Abstract: A wireless phone includes a SMS engine, communicatively coupled to a wireless transceiver, capable to receive, from a source, a first SMS text message having a first beacon activation command via the transceiver; and a beacon engine, communicatively coupled to the SMS engine and to the transceiver, capable to transmit a beacon via the transceiver upon receipt of the first SMS text message having a beacon activation command.
    Type: Application
    Filed: March 15, 2002
    Publication date: October 14, 2004
    Applicant: CSI Wireless LLC
    Inventor: Hamid Najafi