公开(公告)号：US20170149143A1

公开(公告)日：2017-05-25

申请号：US15308706

申请日：2014-05-12

Applicant: Nokia Solutions and Networks Oy

Inventor： Wolfgang ZIRWAS ,  Berthold PANZNER

IPC: H01Q21/12 ,  H01Q21/28 ,  H01Q1/24

CPC classification number: H01Q21/12 ,  H01Q1/246 ,  H01Q21/28 ,  H04B7/0413

Abstract: There is provided an apparatus comprising a plurality of arrays; each array comprising a plurality of antenna elements, adjacent antenna elements of the array spaced at a first distance from one another and wherein the plurality of arrays are spaced from one other at a second distance, wherein the second distance is greater than the first difference.

公开(公告)号：US20210144666A1

公开(公告)日：2021-05-13

申请号：US17259807

申请日：2018-07-25

Applicant: Nokia Solutions and Networks Oy

Inventor： Rakash SIVASIVA GANESAN ,  Wolfgang ZIRWAS ,  Berthold PANZNER

IPC: H04W56/00 ,  H04J3/06

Abstract: A synchronization signal is received at a user equipment from a base station. The user equipment synchronizes clocks between the user equipment and the base station using a combination of sample and sub-sample timing determined based at least in part on the synchronization signal. At a base station, the base station transmits toward a user equipment a synchronization signal. The base station synchronizes clocks between the base station and the user equipment using a combination of sample and sub-sample timing determined based on at least the synchronization signal. Methods, apparatus, software, and computer program products are disclosed.

公开(公告)号：US20200091979A1

公开(公告)日：2020-03-19

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 ,  H04L5/00 ,  H04B7/0456

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.