公开(公告)号：US20210058946A1

公开(公告)日：2021-02-25

申请号：US16462877

申请日：2018-08-01

Applicant: INTEL IP CORPORATION

Inventor： Yuhan Zhou ,  Jie Cui ,  Yang Tang ,  Hong He

IPC: H04W72/12 ,  H04W72/04

Abstract: Systems and methods are provided for handling different timing advance (TA) adjustment delays corresponding to different transmission time intervals (TTIs) from different serving cells under carrier aggregation or dual connectivity. A user equipment (UE) selects and implements one TA adjustment delay even if two or more serving cells transmit with different TTIs. In one embodiment, the UE uses a predetermined TA adjustment delay for each of a plurality of TA commands received from serving cells with different TTI lengths. In another embodiment, the UE uses a TA adjustment delay that is a maximum value of the TA adjustment delays for the TTIs from the different serving cells.