公开(公告)号：US20200059966A1

公开(公告)日：2020-02-20

申请号：US16340070

申请日：2017-10-06

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Juergen HOFMANN ,  Sathiaseelan SUNDARALINGAM ,  Hartmut WILHELM ,  Srinivasan SELVAGANAPATHY ,  Muneender CHIRANJI

IPC: H04W74/08 ,  H04W72/04 ,  H04L1/00 ,  H04L27/26

Abstract: Systems, methods, apparatuses, and computer program products for a modified multi-slot random access channel (RACH) transmission, such as an extended coverage RACH (EC-RACH) transmission, are provided. One method includes transmitting, by a mobile station associated with a network, a dual slot hybrid random access channel including a long burst followed by one access burst or including one access burst followed by one long burst. Two consecutive time slots may be used for the random access channel transmission.

公开(公告)号：US20180376436A1

公开(公告)日：2018-12-27

申请号：US16065203

申请日：2016-12-12

Applicant: Nokia Technologies Oy

Inventor： Gunter WOLFF ,  Mikko KOKKONEN ,  Hartmut WILHELM ,  Mihai ENESCU

IPC: H04W56/00 ,  H04L5/00

Abstract: A method and apparatus may include configuring, by a base station, a synchronization signal. The synchronization signal may be aligned with a sub carrier spacing grid of a radio access technology. The synchronization signal may be positioned at a frequency location that is the same or about the same as a frequency step of a channel raster. The synchronization signal may be transmitted to a user equipment so that the center of the synchronization signal is transmitted with a frequency offset with respect to the center of the radio-access technology bandwidth.