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:
May. 13, 2025
Filed:
Jan. 29, 2021
Lg Electronics Inc., Seoul, KR;
Geumsan Jo, Seoul, KR;
Heejeong Cho, Seoul, KR;
LG ELECTRONICS INC., Seoul, KR;
Abstract
The present invention relates to a method of performing a handover procedure by a user equipment (UE) in a wireless communication system. Especially, the method includes the steps of receiving a handover command containing information about at least one COUNT value from a first network; establishing a first Packet Data Convergence Protocol (PDCP) entity associated with a second network while maintaining a second PDCP entity associated with the first network; performing a random access procedure with the second network; and based on a handover failure with the second network being detected, transmitting a message for informing the handover failure to the first network with setting at least one state variable for the first PDCP entity according to the at least one COUNT value.