Protecting transmissions against jamming

    公开(公告)号:US11431435B2

    公开(公告)日:2022-08-30

    申请号:US17574097

    申请日:2022-01-12

    IPC分类号: H04K3/00

    摘要: This document discloses a solution for performing anti-jamming procedures. According to an aspect, a method for a terminal device comprises: receiving a first reference signal allocation from an access node, wherein the first reference signal is unique to the terminal device in a cell managed by the access node; receiving a second reference signal allocation from the access node, wherein the second reference signal is shared with at least one other terminal device in the cell; causing transmission of payload data together with the first reference signal according to a regular transmission pattern; and breaking the regular transmission pattern by transmitting dummy data together with the second reference signal in a time-frequency resource shared with the at least one other terminal device.

    Transmitting method in multiple input and multiple output antenna system

    公开(公告)号:US10897288B2

    公开(公告)日:2021-01-19

    申请号:US16830948

    申请日:2020-03-26

    IPC分类号: H04B7/0456 H04L5/00

    摘要: There is provided a method in a network node for controlling multiple input multiple output antenna system, the method including obtaining a plurality of time domain symbols to be transmitted, the plurality of time domain symbols including time domain symbols to be broadcasted via the multiple input multiple output antenna system; determining a mapping between the plurality of time domain symbols and parameters of control units associated with respective antenna elements of the multiple input multiple output antenna system, each control unit including a phase shifter, wherein the parameters control values of the phase shifters, and wherein the mapping is performed based on an algorithm for minimizing distortion and/or bit error rate at receiving user equipment; causing applying the parameters at the control units; and causing transmission of the plurality of time domain symbols via the multiple input multiple output antenna system.

    Receiver apparatus and transmitter apparatus

    公开(公告)号:US11962379B2

    公开(公告)日:2024-04-16

    申请号:US17977416

    申请日:2022-10-31

    IPC分类号: H04B7/06 H04B7/08

    摘要: Examples of the disclosure relate to receiver apparatus and corresponding transmitter apparatus that can be configured in different operational states at different times. An example receiver apparatus comprises a plurality of downconverting means for downconverting separate antenna signals, one or more analog to digital converters, and one or more multiplexing means configurable in at least a first configuration and a second configuration. When the multiplexing means is configured in the first configuration the plurality of downconverting means and the one or more analog to digital converters are configured to enable separate antenna signals to be combined to provide hybrid beamforming or analog beamforming. The hybrid beamforming or analog beamforming can be provided across the bandwidth of the apparatus. When the multiplexing means is configured in the second configuration the plurality of downconverting means and the one or more analog to digital converters are configured to enable separate antenna signals to be used to enable digital beamforming. The digital beamforming can be provided across a sub-section of the bandwidth.

    Radio frequency transmission chains

    公开(公告)号:US11700023B2

    公开(公告)日:2023-07-11

    申请号:US17471438

    申请日:2021-09-10

    IPC分类号: H04W88/06 H04B1/00 H04B1/04

    摘要: An apparatus comprises: a first plurality of first radio frequency chains; a second plurality of second radio frequency chains, the first radio frequency chains being configured to produce wider side-band emissions than the second radio frequency chains; at least one antenna array comprising antenna elements, each of a first plurality of the antenna elements being coupled with a corresponding one of the first plurality of first radio frequency chains, the first plurality of first radio frequency chains being configured to cause transmissions predominately in a first band within a channel, each of a second plurality of the antenna elements being coupled with a corresponding one of the second plurality of second radio frequency chains, the second plurality of second radio frequency chains being configured to cause transmissions predominately in at least one second band within the channel.