Delay drift rate compensation in non-terrestrial network communications

• Main Authors: CHARBIT, GILLES, MEDOS, ABDELKADER
• Format: Patent
• Language: Chinese; English
• Published: 19.09.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

Various solutions for synchronization in non-terrestrial network (NTN) communications are presented. An apparatus implemented in a user equipment (UE) obtains at least one of a downlink (DL) precompensation frequency value applied on a serving link of a satellite from a non-terrestrial network (NTN) and a feeder link delay drift rate of a feeder link between a network node and the satellite. The apparatus also obtains a Doppler shift value. The apparatus then performs timing compensation by adjusting the sampling rate according to at least one of the DL pre-compensation frequency value, the feeder link delay drift rate, and the Doppler shift value. 提出了用于非地面网络(NTN)通信中的同步的各种解决方案。一种在用户设备(UE)中实现的装置获得应用于来自非地面网络(NTN)的卫星的服务链路上的下行链路(DL)预补偿频率值和在网络节点与所述卫星之间的馈线链路的馈线链路延迟漂移率中的至少一项。该装置还获得多普勒频移值。然后，该装置通过根据DL预补偿频率值、馈线链路延迟漂移率和多普勒频移值中的至少一项来调整采样率来执行定时补偿。