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:
Nov. 29, 2011
Filed:
Feb. 18, 2009
Hemanth Balaji Pawar, Herndon, VA (US);
Swati Tiwari, Austin, TX (US);
Krishna D. Sitaram, Chantilly, VA (US);
Jong-hak Jung, Herndon, VA (US);
Esmail Hejazi Dinan, Herndon, VA (US);
Hemanth Balaji Pawar, Herndon, VA (US);
Swati Tiwari, Austin, TX (US);
Krishna D. Sitaram, Chantilly, VA (US);
Jong-hak Jung, Herndon, VA (US);
Esmail Hejazi Dinan, Herndon, VA (US);
Clear Wireless LLC, Kirkland, WA (US);
Abstract
A method for identifying time of flight interference in a wireless communication network is provided. The method includes detecting interference during a first uplink sub-frame at an interference destination base station, and transmitting a time of flight interference source detection request to a gateway, where the time of flight interference source detection request comprises a time of flight interference period. The method also includes determining one or more base stations in the vicinity of the interference destination base station, where the one or more base stations in the vicinity of the interference destination base station operate at a same frequency as the interference destination base station. The method further includes instructing the one or more base stations in the vicinity of the interference destination base station to re-transmit a preamble at least once in a downlink sub-frame, decoding a first preamble of a first interference source base station at the interference destination base station during a second uplink sub-frame, and identifying the first interference source base station based on the first preamble.