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:
Jul. 10, 2012

Filed:

May. 07, 2008
Applicants:

Kazuhiro Shitama, Chiba, JP;

Kuniaki Kurihara, Tokyo, JP;

Inventors:

Kazuhiro Shitama, Chiba, JP;

Kuniaki Kurihara, Tokyo, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01); H04W 36/00 (2009.01);
U.S. Cl.
CPC ...
Abstract

A communication terminal apparatus of a mobile type performs data transmission/reception via a network and changes access points based on data receiving conditions. The communication terminal apparatus is configured to acquire a MAC address of a next access point to which a communication terminal apparatus is scheduled to be connected next, broadcast a handover start message containing the acquired MAC address of the next access point, and perform a handover process on condition that the communication terminal apparatus receives a handover setting completion message from a data forwarding controller as a response to the handover start message.


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