公开(公告)号：US20210281297A1

公开(公告)日：2021-09-09

申请号：US16319372

申请日：2017-07-20

Applicant: Nokia Technologies Oy

Inventor： Juha Pekka KARJALAINEN ,  Sami-Jukka HAKOLA ,  Mihai ENESCU

IPC: H04B7/0417

Abstract: The specification and drawings present methods and apparatuses for feedback signaling for beamforming purposes in a multiple input-multiple output (MIMO) radio environment. According to an embodiment of the invention, a mobile device is configured to measure an integer number P of different beam groups, each group representing one or more transmit beams and each group corresponding to one or more antenna ports at the mobile device. The mobile device is triggered according to the configuration to provide feedback. The radio access node transmits reference signals on each of the transmit beams across all of the groups for measurement by the mobile device and receives the triggered feedback including, for each of the different beam groups, at least one best match between a transmit beam of the respective group and a corresponding antenna port and an indication of measurement results for the best match.

公开(公告)号：US20200280945A1

公开(公告)日：2020-09-03

申请号：US16650012

申请日：2018-09-18

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Esa TIIROLA ,  Kari HOOLI ,  Sami-Jukka HAKOLA

IPC: H04W56/00 ,  H04B7/06 ,  H04W74/08

Abstract: A technique may include determining, by a base station in a wireless network, that the base station was unable to transmit a synchronization signal block for a beam via a beam-specific synchronization signal block position that is associated with the beam; transmitting, by the base station in response to the determining, a synchronization signal block for the beam via a non-beam-specific synchronization signal block position; and transmitting, by the base station, control information indicating the transmitting of the synchronization signal block via the non-beam-specific synchronization signal block position.

公开(公告)号：US20190053219A1

公开(公告)日：2019-02-14

申请号：US16075710

申请日：2017-02-08

Applicant: Nokia Technologies Oy

Inventor： Esa TIIROLA ,  Sami-Jukka HAKOLA ,  Kari PAJUKOSKI ,  Eeva LAHETKANGAS

IPC: H04W72/04

Abstract: In a first subframe, data is sent by a network node in a DL shared channel and a timing indicator is sent in a PDCCH to UE, the timing indicator indicating an offset relative to the first subframe the UE should use in order to determine a second subframe to use to send, in a PUCCH, acknowledgement information for the data received in the DL shared channel of the first subframe. The acknowledgement information is received by the network node from the UE in the PUCCH of the second subframe. The UE receives the data and timing indicator and determines the second subframe using at least the timing indicator. The UE transmits the acknowledgement information in the PUCCH of the second subframe. Apparatus, computer programs and products, and methods are disclosed.

公开(公告)号：US20180324721A1

公开(公告)日：2018-11-08

申请号：US15961354

申请日：2018-04-24

Applicant: Nokia Technologies Oy

Inventor： Sami-Jukka HAKOLA ,  Jorma KAIKKONEN

IPC: H04W56/00 ,  H04L5/00

CPC classification number: H04W56/001 ,  H04L5/0048

Abstract: In accordance with an example embodiment of the present invention, a method comprising: initiate, by a user equipment, a search of at least one carrier frequency as part of an initial access procedure; determine possible values for a first parameter and a second parameter based on the at least one carrier frequency, wherein the first parameter relates to a synchronization signal block index and the second parameter relates to at least one of: a periodicity and a synchronization signal block configuration; detect a reference signal from a first cell comprising signaling information indicating a first value for the first parameter and a second value for the second parameter; and synchronize timing for transmission and/or reception of data with the first cell based at least on the first value and the second value.