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1. (WO2018145083) DETERMINING TIMING DIFFERENCES BETWEEN PRIMARY AND SECONDARY COMPONENT CARRIERS HAVING VARIABLE TRANSMISSION TIME INTERVALS

Pub. No.:    WO/2018/145083    International Application No.:    PCT/US2018/017055
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Wed Feb 07 00:59:59 CET 2018
IPC: H04W 56/00
Applicants: INTEL IP CORPORATION
Inventors: CUI, Jie
TANG, Yang
HE, Hong
ZHU, Yuan
TIAN, Shuang
Title: DETERMINING TIMING DIFFERENCES BETWEEN PRIMARY AND SECONDARY COMPONENT CARRIERS HAVING VARIABLE TRANSMISSION TIME INTERVALS
Abstract:
Methods and architectures to determine whether carrier aggregation (CA) component carrier signals transmitted or received by a user equipment (UE) device with a primary serving cell (PCell) and one or more secondary serving cells (SCell) exceed a maximum transmission timing difference compare a relative difference of signals derived from subframe boundaries, a subslot transmission time interval (sTTI) boundary or a combination thereof, with a maximum receive timing threshold value. In the uplink, timing advance groups (TAGs) for the PCell and/SCells may be compared by the UE to a maximum transmit timing threshold value. If the maximum thresholds are exceeded, the SCell may be dropped or changed to avoid UE from exceeding its power maximums.