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. 13, 2009
Filed:
Sep. 06, 2005
Moo Ryong Jeong, San Jose, CA (US);
Xia Gao, Sunnyvale, CA (US);
Fujio Watanabe, Sunnyvale, CA (US);
Gang Wu, Cupertino, CA (US);
Moo Ryong Jeong, San Jose, CA (US);
Xia Gao, Sunnyvale, CA (US);
Fujio Watanabe, Sunnyvale, CA (US);
Gang Wu, Cupertino, CA (US);
NTT DOCOMO, Inc., Tokyo, JP;
Abstract
Channel scanning for wireless networks, such as Wireless Local Area Networks (WLANs), generally provides a wireless station with the information on the available WLAN resources, such as the frequency band and the maximum transmission power. The present invention provides safe and fast domain-aware channel scanning, enabling a wireless station to comply with applicable local regulations, in spite of the possibility of domain changes, with short channel-scanning time. Fast channel scanning is accomplished by active channel scanning if valid domain information is available and there is no possibility of domain change. Also, domain-independent channels, if any, are first scanned using active scan to get domain information faster.