公开(公告)号：US20240137878A1

公开(公告)日：2024-04-25

申请号：US18277624

申请日：2022-01-20

Applicant: Nokia Technologies Oy

Inventor： Frank FREDERIKSEN ,  Jeroen WIGARD ,  Konstantinos MANOLAKIS

IPC: H04W52/50 ,  H04W56/00 ,  H04W74/0833

CPC classification number: H04W52/50 ,  H04W56/0045 ,  H04W74/0833

Abstract: In a non-terrestrial network, the delay in reception time may prevent reception of a random access preamble. A combination of increasing transmit power and changing the timing with which the random access preamble is transmitted may enable reception of the random access preamble. One or more criteria may be used to determine whether the timing advance value with which the random access preamble is transmitted should be changed before retransmission is attempted.

公开(公告)号：US20230354436A1

公开(公告)日：2023-11-02

申请号：US18301477

申请日：2023-04-17

Applicant: Nokia Technologies Oy

Inventor： Konstantinos MANOLAKIS ,  Oana-Elena BARBU ,  Frank FREDERIKSEN ,  Alessio MARCONE ,  Amir Mehdi AHMADIAN TEHRANI

IPC: H04W64/00 ,  H04W74/08

CPC classification number: H04W74/0833 ,  H04W64/00 ,  H04W84/06

Abstract: Various example embodiments may relate to relate to transmission of random access preambles in non-terrestrial networks. An apparatus may estimate a location of the apparatus; determine a quality of the estimated location; determine, based on the location of the apparatus, a plurality of frequency pre-compensation values for accessing a non-terrestrial network, in response to determining that the quality of the estimated location meets a condition for applying multiple frequency pre-compensation values for accessing the non-terrestrial network; and transmit a plurality of random access preambles corresponding to the plurality of frequency pre-compensation values.