公开(公告)号：US20240381198A1

公开(公告)日：2024-11-14

申请号：US18196078

申请日：2023-05-11

Applicant: Nokia Technologies Oy

Inventor： Sanjay Goyal ,  Panagiotis Spapis ,  Umur Karabulut ,  Ali Karimidehkordi ,  Timo Koskela ,  Anastasios Kakkavas ,  Ahmad Awada

IPC: H04W36/00

Abstract: An apparatus configured to: receive, from a source cell, a physical downlink control channel order, wherein the physical downlink control channel order comprises, at least, an indication of a target cell; transmit, to the target cell, a random access channel signaling; receive an indication of an uplink grant and an indication of a timer value associated with the uplink grant; and receive, from the source cell, an indication to perform cell change to the target cell.

公开(公告)号：US20240381411A1

公开(公告)日：2024-11-14

申请号：US18316144

申请日：2023-05-11

Applicant: Nokia Technologies Oy

Inventor： Timo Koskela ,  Sanjay Goyal ,  Ali Karimidehkordi ,  Ahmad Awada ,  Umur Karabulut ,  Anastasios Kakkavas ,  Panagiotis Spapis

IPC: H04W74/00 ,  H04W52/36 ,  H04W74/08

Abstract: Embodiments of the present disclosure provide a method for improved physical downlink control channel (PDCCH) ordered physical random-access channel (PRACH) transmission in lower-layer triggered mobility (LTM). The method includes receiving a PDCCH order to initiate a PRACH transmission to at least one cell. The method also includes decoding a PRACH transmission index value, where the PRACH transmission index value describes whether the PRACH transmission is an initial transmission or a retransmission, and where the PRACH transmission index value is associated with a target downlink (DL) reference signal (RS). The method also includes determining a random access (RA) preamble power ramping counter value. The method also includes transmitting, based in part on a PRACH transmission power level, the PRACH transmission to the at least one cell, where the PRACH transmission power level is determined based in part on the RA preamble power ramping counter value.