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:
Nov. 25, 2025
Filed:
Jul. 15, 2021
Mediatek Singapore Pte. Ltd, Singapore, SG;
Yuanyuan Zhang, Beijing, CN;
Pavan Santhana Krishna Nuggehalli, San Jose, CA (US);
MEDIATEK Singapore Pte. Ltd, Singapore, SG;
Abstract
Apparatus and methods are provided for mobility interruption reduction. In novel aspect, dual-protocol stack handover is performed with zero or close to zero mobility interruption. In one embodiment, the UE receives PDCP SDU from upper layers for UL transmission and is configured with a protocol stack associated with a source gNB and a target gNB for handover. The UE associates a COUNT value corresponding to TX_NEXT to the PDCP SDU, selects an UL gNB as a destination gNB for UL transmission, performs header compression with a robust header compression (ROHC) profile based on the UL gNB. In one embodiment, the UE selects the UL gNB when an UL grant is received from the selected gNB. In another embodiment, corresponding ROHC profiles are configured by the wireless network. In one embodiment, the ROHC profile for the UL gNB is configured by the selected UL gNB.