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:
Apr. 24, 2012
Filed:
Sep. 15, 2006
Daisuke Inoue, Tokyo, JP;
Masahiro Kuroda, Tokyo, JP;
Kentaro Ishizu, Tokyo, JP;
Abstract
The present invention provides a technology of effectively avoiding tracing on a terminal performed with an identification number being a target and DoS attack without making any significant changes to a communication system. In the wireless communication system of the present invention, under a control of a control communication processing portionof an access point, a hash function arithmetic operation processing portiongenerates a third identification number to be updated using a current identification number, hash key and random number for any wireless communication terminal, a control communication processing portionsends an update instruction signal containing the random number to the wireless communication terminal and updates the current identification number stored in the identification number storage portionto a second identification number. When the wireless communication terminal receives an update instruction signal, the current identification number is updated to the second identification number and the hash function arithmetic operation processing portion generates a third identification number using the current identification number, hash key and random number stored in the self number storage portion.