公开(公告)号：US20140313995A1

公开(公告)日：2014-10-23

申请号：US14246321

申请日：2014-04-07

Applicant: Nokia Solutions and Networks Oy

Inventor： Oliver Cyranka ,  Martin Goldberg ,  Helmut Heinz ,  Rupert Herzog ,  Thomas Hindelang ,  Sabine Roessel ,  Wolfgang Zirwas

IPC: H04W16/14 ,  H04L5/00 ,  H04J11/00

CPC classification number: H04W16/14 ,  H04J11/0033 ,  H04J11/004 ,  H04L5/0037 ,  H04L5/0092

Abstract: It is disclosed a method comprising accommodating, in frequency domain, a first bandwidth of a first carrier signal with respect to a second bandwidth of a second carrier signal such that the first bandwidth adjoins to or overlaps the second bandwidth, the first bandwidth being greater than the second bandwidth.

Abstract translation: 公开了一种方法，包括在频域中相对于第二载波信号的第二带宽容纳第一载波信号的第一带宽，使得第一带宽与第二带宽相邻或重叠，第一带宽大于 第二个带宽。

公开(公告)号：US11190249B2

公开(公告)日：2021-11-30

申请号：US16617684

申请日：2017-06-14

Applicant: Nokia Solutions and Networks Oy

Inventor： Rakash Sivasiva Ganesan ,  Wolfgang Zirwas ,  Berthold Panzner

IPC: H04B7/06 ,  H04B7/0452 ,  H04B7/0456 ,  H04L5/00

Abstract: For a system with multiple Antenna Elements, AEs, to be used to transmit multiple symbols to multiple user equipments, UEs, and with multiple time sample positions, where the symbols occupy a time-frequency resource space and wherein at least some of the AEs are powered by constrained RF chains having functionalities that are simplified relative to full RF chains, precoder coefficients are generated for the multiple AEs taking into consideration multipath components of a signal to be transmitted from the multiple AEs to the multiple UEs. The generating forms precoder coefficients for individual ones of the constrained RF chains at corresponding certain time sample positions of the symbols. The signal is transmitted from the multiple AEs to the multiple UEs using FDMA at least by applying the generated precoder coefficients to the multiple AEs over the multiple time sample positions and time-frequency resource space of the symbols.

公开(公告)号：US10904040B2

公开(公告)日：2021-01-26

申请号：US15778381

申请日：2015-11-26

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Wolfgang Zirwas ,  Berthold Panzner ,  Rakash Sivasiva Ganesan ,  Markus Staudacher ,  Gerhard Kramer

IPC: H04B7/06 ,  H04B7/26 ,  H01Q21/22 ,  H04L25/02 ,  H04B7/0417 ,  H04L1/00

Abstract: A method is provided for channel estimation of an antenna array comprising multiple antenna elements. The method comprises obtaining channel state information for antenna elements with a high-end radio frequency chain, wherein the antenna elements with the high-end radio frequency chain are placed in the antenna array intermittently with antenna elements with a low-cost radio frequency chain. Channel state information is estimated for the antenna elements with the low-cost radio frequency chain, by interpolating the channel state information obtained for the antenna elements with the high-end radio frequency chain.

公开(公告)号：US10128992B2

公开(公告)日：2018-11-13

申请号：US15037967

申请日：2013-11-25

Applicant: Nokia Solutions and Networks Oy

Inventor： Wolfgang Zirwas

IPC: H04L5/00 ,  H04L5/14 ,  H04L27/26

Abstract: Apparatuses and methods in a communication system are provided. The solution comprises utilizing a given number of parallel subbands in communication, where the transmission timing in each of the subbands is time-shifted by a predetermined time offset.

公开(公告)号：US20180324003A1

公开(公告)日：2018-11-08

申请号：US15778381

申请日：2015-11-26

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Wolfgang Zirwas ,  Berthold Panzner ,  Rakash Sivasiva Ganesan ,  Markus Jaeger ,  Gerhard Kramer

IPC: H04L25/02 ,  H04B7/06 ,  H04B7/26 ,  H04B7/0417 ,  H01Q21/22

CPC classification number: H04L25/0204 ,  H01Q21/22 ,  H04B7/0417 ,  H04B7/0626 ,  H04B7/066 ,  H04B7/265 ,  H04L1/0026

Abstract: A method is provided for channel estimation of an antenna array comprising multiple antenna elements. The method comprises obtaining channel state information for antenna elements with a high-end radio frequency chain, wherein the antenna elements with the high-end radio frequency chain are placed in the antenna array intermittently with antenna elements with a low-cost radio frequency chain. Channel state information is estimated for the antenna elements with the low-cost radio frequency chain, by interpolating the channel state information obtained for the antenna elements with the high-end radio frequency chain.