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:
Apr. 05, 2016

Filed:

May. 02, 2013
Applicant:

Institute for Information Industry, Taipei, TW;

Inventors:

Yi-Hsueh Tsai, New Taipei, TW;

Kanchei Loa, Taipei, TW;

Yi-Ting Lin, New Taipei, TW;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 76/02 (2009.01); H04W 4/02 (2009.01); H04W 64/00 (2009.01); H04W 84/12 (2009.01);
U.S. Cl.
CPC ...
H04W 76/023 (2013.01); H04W 4/02 (2013.01); H04W 64/00 (2013.01); H04W 84/12 (2013.01);
Abstract

An evolved packet core less direct-mode communication system and a communication attaching method thereof are provided. The evolved packet core less direct-mode communication system comprises a client direct-mode communication apparatus and a server direct-mode communication apparatus. The server direct-mode communication apparatus transmits a synchronization signal to the client direct-mode communication apparatus. The client direct-mode communication apparatus synchronizes to the server direct-mode communication apparatus according to the synchronization signal and establishes a communication connection with the evolved packet core less direct-mode communication system after synchronization.


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