×

WIRELESS COMMUNICATION SYSTEM AND LIFT SYSTEM HAVING THE SAME

  • US 20080261520A1
  • Filed: 05/16/2008
  • Published: 10/23/2008
  • Est. Priority Date: 11/28/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method for improving a radio frequency (RF) link in a wireless communication system between an enclosed environment that is at least substantially shielded from RF signals, and the outside of the enclosed environment, the method comprising:

  • providing at least one gateway antenna at an entrance point of the enclosed environment;

    the gateway antenna radiating downlink RF signals into the enclosed environment or receiving uplink RF signals from the enclosed environment;

    providing at least one auxiliary repeater within the enclosed environment;

    providing a donor antenna coupled to the auxiliary repeater;

    providing a server antenna coupled to the auxiliary repeater;

    the auxiliary repeater relaying the downlink and uplink RF signals using the donor antenna and the server antenna.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×