US 12,494,893 B2
Enhanced support for transmit-receive transition gap in non-terrestrial network communications
Abdelkader Medles, Cambridge (GB); Francesc Boixadera-Espax, Cambridge (GB); Gilles Charbit, Cambridge (GB); and I-Kang Fu, Hsinchu (TW)
Assigned to MediaTek Singapore Pte. Ltd., Singapore (SG)
Appl. No. 18/030,769
Filed by MediaTek Singapore Pte. Ltd., Singapore (SG)
PCT Filed Oct. 8, 2021, PCT No. PCT/CN2021/122582
§ 371(c)(1), (2) Date Apr. 6, 2023,
PCT Pub. No. WO2022/073474, PCT Pub. Date Apr. 14, 2022.
Claims priority of provisional application 63/087,933, filed on Oct. 6, 2020.
Prior Publication US 2023/0379131 A1, Nov. 23, 2023
Int. Cl. H04W 4/00 (2018.01); H04L 5/00 (2006.01); H04L 5/16 (2006.01); H04W 72/0446 (2023.01)
CPC H04L 5/16 (2013.01) [H04L 5/0048 (2013.01); H04W 72/0446 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method, comprising:
performing, by a processor of an apparatus implemented in a user equipment (UE), an uplink (UL) transmission to a non-terrestrial (NT) network node of a network within a transmit-receive (Tx-Rx) transition gap during which no downlink (DL) transmission (Tx) from the NT network node is expected;
obtaining, by the processor, an initial value of the TA;
receiving, by the processor, from the network an indication of a TA drift rate or function; and
receiving, by the processor, from the network a UL grant or a configuration that schedules the UL transmission Tx,
wherein the performing of the UL transmission comprises performing the UL transmission responsive to receiving the UL grant or the configuration,
wherein the Tx-Rx transition gap comprises an UL Tx duration, a pre-UL Tx gap (Gap_start) before a starting time of the UL Tx duration (t_start), and a post-UL Tx gap (Gap_end) after an ending time of the UL Tx duration (t_end), and
wherein, from a perspective of the NT network node:
a starting timing of the Tx-Rx transition gap is expressed as:
t_start−timing advance (TA)−Gap_start, and
an ending time of the Tx-Rx transition gap is expressed as:
t_end−TA+Gap_end.