TRACKING REFERENCE SIGNAL (TRS) ENHANCEMENT WITH DOPPLER SHIFT PRE-COMPENSATION

Organization Name

apple inc.

Inventor(s)

Haitong Sun of Cupertino CA (US)

Dawei Zhang of Saratoga CA (US)

Wei Zeng of Saratoga CA (US)

Yushu Zhang of Beijing (CN)

Hong He of San Jose CA (US)

Huaning Niu of San Jose CA (US)

Weidong Yang of San Diego CA (US)

Oghenekome Oteri of San Diego CA (US)

Seyed Ali Akbar Fakoorian of San Diego CA (US)

Sigen Ye of Whitehouse Station NJ (US)

Chunhai Yao of Beijing (CN)

TRACKING REFERENCE SIGNAL (TRS) ENHANCEMENT WITH DOPPLER SHIFT PRE-COMPENSATION

This abstract first appeared for US patent application 20240414029 titled 'TRACKING REFERENCE SIGNAL (TRS) ENHANCEMENT WITH DOPPLER SHIFT PRE-COMPENSATION

Original Abstract Submitted

some aspects of this disclosure relate to apparatuses and methods for implementing mechanisms for a network to use doppler shift pre-compensation values for communicating tracking reference signal (trs) to a user equipment (ue) and for implementing mechanisms for triggering the ue to measure the doppler shift pre-compensated trs. some aspects of this disclosure relate to a base station including a processor that determines a doppler shift pre-compensation value associated with the ue in response to determining that the ue is moving with a speed greater than a threshold. the processor further generates an aperiodic tracking reference signal (ap-trs) or a semi persistent trs (sp-trs) for the ue. the ap-trs or the sp-trs is decoupled from a periodic trs (p-trs). the processor further transmits the ap-trs or the sp-trs to the ue. the ap-trs or the sp-trs can be used for time and frequency synchronization.