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    DEMODULATION REFERENCE SIGNALING IN LTE/NR COEXISTENCE
    2.
    发明申请
    DEMODULATION REFERENCE SIGNALING IN LTE/NR COEXISTENCE 有权

    公开(公告)号：US20210152310A1

    公开(公告)日：2021-05-20

    申请号：US17045407

    申请日：2018-06-02

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Robert BALDEMAIR ,  Håkan BJÖRKEGREN ,  Erik DAHLMAN ,  Anders FURUSKÄR ,  Franz HEISER ,  Karl WERNER

    IPC分类号： H04L5/00

    摘要： There is disclosed a method of operating a network node, the network node operating according to a first radio access technology, RAT, the method including transmitting data in a transmission resource structure, the transmission resource structure including a first set of resource elements for data and a second set of resource elements for demodulation reference signals, DMRS, wherein the second set represents at least one pattern in frequency domain, wherein the transmission resource structure is scheduled based on a coexistence indication, the coexistence indication indicating the presence of cell-specific reference signals associated to a second RAT. The disclosure also pertains to related methods and devices.

    METHOD AND APPARATUS FOR PHASE TRACKING- REFERENCE SIGNAL (PT-RS) PORT SELECTION IN DOWNLINK
    3.
    发明申请
    METHOD AND APPARATUS FOR PHASE TRACKING- REFERENCE SIGNAL (PT-RS) PORT SELECTION IN DOWNLINK 审中-公开

    公开(公告)号：US20200186208A1

    公开(公告)日：2020-06-11

    申请号：US16623582

    申请日：2018-06-27

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Vicent MOLÉS CASES ,  Mattias FRENNE ,  Lars LINDBOM ,  Karl WERNER

    IPC分类号： H04B7/0417 ,  H04L5/00 ,  H04B7/0456

    摘要： Methods and apparatuses are disclosed for PT-RS selection. In one embodiment, a wireless device is configured to determine a layer based at least on a precoder associated with a precoder matrix indicator, PMI; and transmit an indication of the determined layer to a network node as part of channel state information, CSI, feedback. In other embodiments, a network device is configured to receive an indication of a layer for a phase-tracking reference signal, PT-RS, transmission as part of channel state information, CSI, feedback; determine a precoder based at least on the indication of the layer for the PT-RS transmission; and transmit the PT-RS, the PT-RS transmission associated with the indicated layer and a PT-RS port.

    TRANSMITTING SYNCHRONISATION SIGNALS ON MULTIPLE CARRIERS
    6.
    发明公开
    TRANSMITTING SYNCHRONISATION SIGNALS ON MULTIPLE CARRIERS 审中-公开

    公开(公告)号：US20230412440A1

    公开(公告)日：2023-12-21

    申请号：US18036498

    申请日：2020-12-18

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Karl WERNER ,  Sven PETERSSON ,  Tobias JOHANSSON ,  Kajsa NILSSON ,  Rikke APELFRÖJD

    IPC分类号： H04L27/26

    CPC分类号： H04L27/2621

    摘要： The present disclosure provides a base station for transmitting synchronisation signals on a plurality of carriers, wherein the base station includes processing circuitry and a machine-readable medium storing instructions which, when executed by the processing circuitry, cause the base station to apply a time shift to at least part of a first synchronisation signal to be sent by the base station on a first carrier of the plurality of carriers such that the at least part of the first synchronisation signal is offset in time from a second synchronisation signal to be sent on a second carrier of the plurality of carriers. The base station is further caused to combine signals for the plurality of carriers, including the first and second synchronisation signals, to form a combined signal, amplify the combined signal using a power amplifier, and transmit the amplified combined signal.

    JOINT RESOURCE MAP DESIGN OF DM-RS AND PT-RS
    9.
    发明申请
    JOINT RESOURCE MAP DESIGN OF DM-RS AND PT-RS 有权

    公开(公告)号：US20210211257A1

    公开(公告)日：2021-07-08

    申请号：US16073680

    申请日：2018-06-15

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Zhao WANG ,  Lars LINDBOM ,  Vicent MOLÉS CASES ,  Karl WERNER

    IPC分类号： H04L5/00 ,  H04W72/04

    摘要： A method, network node and wireless device in a wireless communication system for one of transmitting and receiving a phase-tracking reference signal, PT-RS. The method includes obtaining information about a position in a time domain of a scheduled first demodulation reference signal, DM-RS, in a slot, and one of transmitting and receiving the PT-RS within the slot, the position of the PT-RS depending on the position in the time domain of the scheduled first DM-RS.

    Methods for Adapting Density of Demodulation Reference Signals
    10.
    发明申请
    Methods for Adapting Density of Demodulation Reference Signals 审中-公开

    公开(公告)号：US20190260454A1

    公开(公告)日：2019-08-22

    申请号：US16308203

    申请日：2017-10-09

    申请人： Telefonaktiebolaget LM Ericsson (publ)

    发明人： Lars LINDBOM ,  Mattias FRENNE ,  Martin HESSLER ,  Karl WERNER

    IPC分类号： H04B7/06 ,  H04L5/00 ,  H04L25/02

    摘要： According to an aspect, a wireless node selects a set of reference signal antenna ports for use in transmitting data to other wireless nodes in a given transmit time interval, from a plurality of sets of reference signal antenna ports that are available for use and that include reference signal antenna ports having different reference signal densities in the frequency and/or time dimension. The wireless node sends a message to a second wireless node indicating a reference signal assignment and including an indication of the selected set of reference signal antenna ports.