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. 17, 2022
Filed:
Jul. 08, 2020
Mediatek Singapore Pte. Ltd., Singapore, SG;
MEDIATEK SINGAPORE PTE. LTD., Singapore, SG;
Abstract
Apparatus and methods are provided to support dual active protocol stacks (DAPS) to reduce mobility interruption time in both LTE and NR system. In novel aspect, the PDCP reconfiguration includes reconfiguring a normal PDCP to an DAPS PDCP for DAPS such that the DAPS PDCP is associated with both the source cell and the target cell, and reconfiguring an DAPS PDCP to the a normal PDCP by releasing the association with the source cell. In one embodiment, the PDCP entity receives a PDCP reconfiguration request from upper layers of the UE configured with DAPS establishes a header compression protocol, a ciphering function, and an integrity protection function for the target cell. In one embodiment, the PDCP reconfiguration request triggers the DAPS PDCP to be released. The DAPS PDCP resets and releases the source header compression, ciphering and integrity protection functions.