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. 22, 2008
Filed:
May. 31, 2005
Choong-hun Lee, Yongin-si, KR;
Kyung-hun Jang, Suwon-si, KR;
Chang-woo Seo, Suwon-si, KR;
Jin-youn Cho, Seoul, KR;
Hyo-sun Hwang, Seoul, KR;
Sung-jea Ko, Seoul, KR;
Chun-su Park, Seoul, KR;
Choong-Hun Lee, Yongin-si, KR;
Kyung-Hun Jang, Suwon-si, KR;
Chang-Woo Seo, Suwon-si, KR;
Jin-Youn Cho, Seoul, KR;
Hyo-Sun Hwang, Seoul, KR;
Sung-Jea Ko, Seoul, KR;
Chun-Su Park, Seoul, KR;
Abstract
A handoff method is provided in a communication network including a plurality of fixed nodes attached to a router connected to at least one external network, and at least one mobile node associated with a current fixed node. The method detects movement of a mobile node; prepares a handoff of the mobile node from a current fixed node to potential fixed nodes upon detecting movement of the mobile node; decides whether to handoff to one of the potential fixed nodes as a target fixed node; and performs the handoff from the current fixed node to the target fixed node. The handoff method enables the mobile station to quickly move its association from one access point to another by minimizing a probe delay which is a primary contributor to handoff delay.