The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2001
Filed:
Jun. 11, 1999
David Thomson, Murray Hill, NJ (US);
John Anthony Tyson, Pottersville, NJ (US);
Lucent Technologies, Inc., , NJ (US);
Abstract
A method and system for reducing the effects of atmospheric ducting on wireless transmissions, wherein a wireless communication system is comprised of a plurality of base stations having antennas, each base station having a beacon signal transmitter and a beacon signal receiver. Each beacon signal transmitter is configured to transmit a wireless beacon signal to be received by the beacon signal receiver at other, preferably every other, base stations. For each wireless beacon signal, a time delay and a propagation loss is measured. Each measured time delay and propagation loss is compared to an expected time delay and an expected propagation loss corresponding to the wireless beacon signal. The results of the comparison are processed so as to determine a location of atmospheric ducts in the region serviced by the wireless system. Once an atmospheric duct has been located, the antennas of the base stations in the wireless system are arranged so as minimize the transmission of the wireless beacon signals through the duct location.