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.

Date of Patent:
Jan. 15, 2013

Filed:

Aug. 25, 2009
Applicants:

Yasuyuki Kozakai, Kawasaki, JP;

Seijiro Yoneyama, Yokohama, JP;

Wakana Tsuchino, Tokyo, JP;

Masahiro Ishiyama, Kawasaki, JP;

Inventors:

Yasuyuki Kozakai, Kawasaki, JP;

Seijiro Yoneyama, Yokohama, JP;

Wakana Tsuchino, Tokyo, JP;

Masahiro Ishiyama, Kawasaki, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01);
U.S. Cl.
CPC ...
Abstract

When handover is performed from a first network to a second network, a terminal transmits a reply request message to a home agent through the first network after new configuration of a tunnel for transmitting and receiving a packet through the second network. If the terminal receives a reply message corresponding to the reply request message through the first network, the terminal detects that the configuration of the tunnel for transmitting and receiving the packet through the first network can be deleted, and deletes the configuration of the tunnel.


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