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. 28, 2015

Filed:

May. 14, 2013
Applicant:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Inventors:

Yoshiaki Ohta, Kawasaki, JP;

Yoshiharu Tajima, Kawasaki, JP;

Kazuhisa Obuchi, Kawasaki, JP;

Yoshihiro Kawasaki, Kawasaki, JP;

Yoshinori Tanaka, Kawasaki, JP;

Katsumasa Sugiyama, Kawasaki, JP;

Assignee:

FUJITSU LIMITED, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 36/00 (2009.01); H04L 12/801 (2013.01); H04W 36/02 (2009.01); H04L 12/861 (2013.01);
U.S. Cl.
CPC ...
H04W 36/0005 (2013.01); H04L 47/10 (2013.01); H04L 47/14 (2013.01); H04L 47/34 (2013.01); H04L 49/9057 (2013.01); H04W 36/02 (2013.01); H04W 36/023 (2013.01);
Abstract

A radio communication system, that includes, a source base station; a target base station; and a mobile station in which the mobile station includes a receiving means for receiving first PDCP (Packet Data Convergence Protocol) PDU (Protocol Data Unit) and first sequence number from the source base station and a receiving means for receiving second PDCP PDU from the target base station, in which the second PDCP PDU being created using second sequence number and PDCP (Packet Data Convergence Protocol) SDU (Service Data Unit) that are transferred from the source base station to the target base station; a storage means for storing PDCP SDU corresponding to the first PDCP PDU and PDCP SDU corresponding to the second PDCP PDU; and a reordering means for performing in order delivery of the stored PDCP SDUs based on the first sequence number and the second sequence number.


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