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:
Sep. 01, 2020

Filed:

Jan. 17, 2017
Applicant:

Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do, KR;

Inventors:

Chulhee Jang, Seoul, KR;

Soenghun Kim, Suwon-si, KR;

Eunyong Kim, Yongin-si, KR;

Hwajin Cha, Seongnam-si, KR;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04W 36/02 (2009.01); H04W 88/02 (2009.01); H04W 74/08 (2009.01); H04W 36/08 (2009.01); H04W 36/00 (2009.01); H04L 1/16 (2006.01); H04W 36/38 (2009.01); H04W 80/08 (2009.01); H04W 88/08 (2009.01);
U.S. Cl.
CPC ...
H04W 36/02 (2013.01); H04L 1/1621 (2013.01); H04W 36/0005 (2013.01); H04W 36/08 (2013.01); H04W 36/38 (2013.01); H04W 74/08 (2013.01); H04W 74/0833 (2013.01); H04W 88/02 (2013.01); H04W 88/08 (2013.01); H04W 80/08 (2013.01);
Abstract

To solve the problem wherein a terminal cannot perform data communication from a network from the time point of a terminal receiving a handover command (HO command) message from a base station controlling a source cell to the time point of a terminal receiving a handover complete (HO complete) message from a base station controlling a target cell, after the terminal transmits the handover command message to the base station controlling the source cell, the base station controlling the source cell transmits to the base station controlling the target cell whether or not the terminal supports a function of reducing the interruption time of data transfer, the terminal continues to perform data transmission/reception with the base station controlling the source cell, and after the terminal completes a random access procedure with the base station controlling the target cell, the base station controlling the source cell transmits an additional sequence number status transfer message to the base station controlling the target cell.


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