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.
Patent No.:
Date of Patent:
Oct. 03, 2023
Filed:
Jul. 07, 2020
Applicant:
Nec Corporation, Tokyo, JP;
Inventor:
Jagdeep Singh Ahluwalia, Sutton, GB;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 36/00 (2009.01); H04L 1/1867 (2023.01); H04W 36/02 (2009.01); H04L 47/34 (2022.01); H04L 1/1607 (2023.01); H04L 49/552 (2022.01); H04L 1/00 (2006.01);
U.S. Cl.
CPC ...
H04W 36/0033 (2013.01); H04L 1/1671 (2013.01); H04L 1/1877 (2013.01); H04L 47/34 (2013.01); H04L 49/552 (2013.01); H04W 36/02 (2013.01); H04W 36/023 (2013.01); H04L 2001/0097 (2013.01);
Abstract
A system is proposed to provide handover in a mobile telecommunications environment, particularly applicable to 3GPP networks, which does not increase signalling overhead but minimises user data loss during handover. In the modified system, PDCP SDUs with Sequence numbers are buffered and retransmitted as necessary. At the time of handover, SDUs not received by the user device are forwarded to the target base station for forward transmission to the UE. The handover procedure is designed to minimise packet loss whilst keeping to a minimum the duplication of packet transmission over the air interface.