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:
Jan. 06, 2015
Filed:
Feb. 02, 2007
Haitao Wu, Redmond, WA (US);
Kun Tan, Redmond, WA (US);
Yongguang Zhang, Redmond, WA (US);
Microsoft Corporation, Redmond, WA (US);
Abstract
Methods and systems for handing off a wireless client between access points wherein the scanning for access points is decoupled from the handing off, thus reducing the delay in handing off. Channel scan delay may be eliminated or reduced in some embodiments by scanning early (prior to actual handoff) and interleaving the channel scan with ongoing traffic in a non-intrusive way. A smart handoff trigger may be used in some embodiments that covers both uplink and downlink quality, and addresses link asymmetry problems. The methods or systems may be implemented in some embodiments in a software-only client-only solution without the need to modify the networks themselves or their access points.