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. 10, 2012
Filed:
Nov. 30, 2007
Applicants:
Kwang-ryul Jung, Daejeon, KR;
Ae-soon Park, Daejon, KR;
Inventors:
Kwang-Ryul Jung, Daejeon, KR;
Ae-Soon Park, Daejon, KR;
Assignee:
Electronics and Telecommunications Research Institute, Daejeon, KR;
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a handover method between systems of a multi-mode terminal. A multi-cast based protocol is added to an Internet protocol (IP) based wireless network to cooperate with the wireless access protocol of the terminal. In addition, minimized processes are added to use the wireless access protocol having wide area coverage. Accordingly, the handover between the systems may be performed while packet loss or service delay caused by a movement of a user may be minimized, and terminal complexity may not be increased.