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    MU-MIMO precoder design and use for a wideband mMIMO system with constrained RF chains in a multi-path environment
    2.
    发明授权
    MU-MIMO precoder design and use for a wideband mMIMO system with constrained RF chains in a multi-path environment 有权

    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.

    TECHNIQUES TO REDUCE RADIATED POWER FOR MIMO WIRELESS SYSTEMS
    5.
    发明申请
    TECHNIQUES TO REDUCE RADIATED POWER FOR MIMO WIRELESS SYSTEMS 审中-公开

    公开(公告)号：US20190036578A1

    公开(公告)日：2019-01-31

    申请号：US15766695

    申请日：2015-10-07

    Applicant: NOKIA SOLUTIONS AND NETWORKS OY

    Inventor： Wolfgang Zirwas ,  Berthold Panzner ,  Simone Redana ,  Stefan Dierks ,  Markus Staudacher ,  Gerhard Kramer

    IPC: H04B7/0456

    Abstract: A technique is provided for selecting precoding weights in a wireless network to avoid violating a power constraint. The technique may include selecting, by an access point in a wireless network, a set of precoding weights subject to a power constraint, and applying, by the access point, the set of selected precoding weights to a set of antennas to transmit signals to the one or more user devices. Selecting a set of precoding weights may further include calculating, by the access point, the set of precoding weights for each of a plurality of beamformed signals; determining, by the access point, that the set of precoding weights for the plurality of beamformed signals, when applied to a set of antennas for transmitting signals to the one or more user devices, will violate a power constraint; determining, by the access point, that a first set of precoding weights for a first beamformed signal causes a power contribution that is greater than power contributions due to sets of precoding weights of the other beamformed signals; adjusting, by the access point, one or more precoding weights of the first set of precoding weights for the first beamformed signal such that the power constraint will not be violated when the access point applies the precoding weights, including the adjusted first set of precoding weights, to a set of antennas and transmits signals to the plurality of user devices.

    Synchronizing TSN master clocks in wireless networks
    7.
    发明授权
    Synchronizing TSN master clocks in wireless networks 有权

    公开(公告)号：US11470568B2

    公开(公告)日：2022-10-11

    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.

    Low effort massive MIMO antenna arrays and their use
    8.
    发明授权
    Low effort massive MIMO antenna arrays and their use 有权
    低功耗海量MIMO天线阵列及其应用

    公开(公告)号：US09231676B2

    公开(公告)日：2016-01-05

    申请号：US14274944

    申请日：2014-05-12

    Applicant: Nokia Solutions and Networks Oy

    Inventor： Wolfgang Zirwas ,  Berthold Panzner

    IPC: H04B7/02 ,  H04B7/04

    CPC classification number: H04B7/0452 ,  H04B7/022 ,  H04B7/0469 ,  H04B7/0691

    Abstract: An apparatus includes a number of first RF chains configured to be able to be coupled to a plurality of first antennas from an antenna array and a number of second RF chains configured to be able to be coupled to a plurality of second antennas from the antenna array. The first and second antennas are different. The first and second RF chains are configured to create RF signals from baseband signals. The first RF chains have a certain functionality, and the second RF chains have a reduced functionality relative to the certain functionality. The apparatus may include the antenna array. The first and second antennas may have the same or different characteristics. A base station may include the apparatus. Sets of antennas for the second RF chains may be use to create signals used for over-the-air signal combining at a receiver. Methods and program products are also described.

    Abstract translation: 一种装置包括多个第一RF链，其被配置为能够从天线阵​​列耦合到多个第一天线，并且多个第二RF链被配置为能够从天线阵​​列耦合到多个第二天线 。 第一和第二天线是不同的。 第一和第二RF链被配置为从基带信号产生RF信号。 第一RF链具有一定的功能，第二RF链相对于某些功能具有减少的功能。 该装置可以包括天线阵列。 第一和第二天线可以具有相同或不同的特性。 基站可以包括该装置。 用于第二RF链的天线组可用于创建用于在接收机处进行空中信号组合的信号。 还描述了方法和程序产品。

    Low Effort Massive MIMO Antenna Arrays and Their Use
    9.
    发明申请
    Low Effort Massive MIMO Antenna Arrays and Their Use 有权
    低功耗大量MIMO天线阵列及其应用

    公开(公告)号：US20150326285A1

    公开(公告)日：2015-11-12

    申请号：US14274944

    申请日：2014-05-12

    Applicant: Nokia Solutions and Networks Oy

    Inventor： Wolfgang Zirwas ,  Berthold Panzner

    IPC: H04B7/04

    CPC classification number: H04B7/0452 ,  H04B7/022 ,  H04B7/0469 ,  H04B7/0691

    Abstract: An apparatus includes a number of first RF chains configured to be able to be coupled to a plurality of first antennas from an antenna array and a number of second RF chains configured to be able to be coupled to a plurality of second antennas from the antenna array. The first and second antennas are different. The first and second RF chains are configured to create RF signals from baseband signals. The first RF chains have a certain functionality, and the second RF chains have a reduced functionality relative to the certain functionality. The apparatus may include the antenna array. The first and second antennas may have the same or different characteristics. A base station may include the apparatus. Sets of antennas for the second RF chains may be use to create signals used for over-the-air signal combining at a receiver. Methods and program products are also described.

    Abstract translation: 一种装置包括多个第一RF链，其被配置为能够从天线阵​​列耦合到多个第一天线，并且多个第二RF链被配置为能够从天线阵​​列耦合到多个第二天线 。 第一和第二天线是不同的。 第一和第二RF链被配置为从基带信号产生RF信号。 第一RF链具有一定的功能，第二RF链相对于某些功能具有减少的功能。 该装置可以包括天线阵列。 第一和第二天线可以具有相同或不同的特性。 基站可以包括该装置。 用于第二RF链的天线组可用于创建用于在接收机处进行空中信号组合的信号。 还描述了方法和程序产品。

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