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:
Jul. 11, 2006
Filed:
Dec. 20, 2001
Akira Uematsu, Tokyo, JP;
Akira Uematsu, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A wireless communication system wherein if a terminal receives an address duplication detection packet that terminal compares the duplication detection address with the IP address of itself and if those addresses are similar, sends a duplication notification packet, however if those addresses are not similar, the terminal investigates whether or not the duplicated address is being held in an address coordination table. If the duplicated address is not being held in that table, the terminal makes a new registration of that address in the table while if that duplicated address is held in that table, the terminal compares the combination of that duplicated address and the sender physical identifier of the duplication detection packet with the combinations inside the coordination table. If those combinations are equivalent, the terminal resets an address coordination maintenance timer while if they are not equivalent, the terminal changes the reception settings of packet reception partto enable reception of packets each of which includes the duplication detection address and the sender physical identifier of the duplication inspection packet as the destination physical identifier, and starts up duplication notification packet wait-for-send timerhowever if timertimes out, a duplication notification packet is sent.