METHOD AND APPARATUS FOR INTERCELL CROSS-TRP SEAMLESS MOBILITY

Abstract: according to embodiments, a ue receives, from a source cell, a mobility pre-configuration radio resource control (rrc) message for random-access channel (rach)-less access. the mobility pre-configuration rrc message indicates target timing advance (ta) assistance information. the ue receives, from the source cell, a lower layer target access command. the lower layer target access command indicates a most updated or latest network-updated time sensitive dynamic ta assistance information. the ue determines a target cell ta of a target cell based on a latest source cell ta of the source cell, a latest measured timing difference between reference signals (rss) from the source cell and from the target cell, the most updated or latest network-updated time sensitive dynamic ta assistance information, and the target ta assistance information. the ue performs the rach-less mobility access to the target cell based on the target cell ta.

Inventor(s): Jialin Zou, Jialing Liu, Yunsong Yang

CPC Classification: H04W36/0058 ({Transmission of hand-off measurement information, e.g. measurement reports})

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