TRIGGERING A BEAM REFINEMENT REFERENCE SIGNAL

    公开(公告)号:US20200274666A1

    公开(公告)日:2020-08-27

    申请号:US16074393

    申请日:2016-11-17

    IPC分类号: H04L5/00 H04B7/06 H04B7/08

    摘要: The present disclosure provides for the trigger of a beam refinement reference signal (BRRS) message. Triggering a BRRS message can include determining that a measured quality of a transmit and receive (Tx-Rx) beam pair is below the first value of the first quality threshold, the Tx-Rx beam pair corresponding to a current transmit (Tx) beam from an evolved node B (eNodeB) and the current receive (Rx) beam at the user equipment (UE), encoding a message for the eNodeB based on the determination that the quality of the Tx-Rx beam pair is below the quality threshold, wherein the message comprises a request for one or more BRRS, and processing the one or more BRRS to select a different Rx beam at the UE than the current Rx beam.

    Enabling a secondary cell in a massive MIMO system

    公开(公告)号:US10749577B2

    公开(公告)日:2020-08-18

    申请号:US16080580

    申请日:2016-08-30

    摘要: Embodiments of enabling a secondary cell in a massive MIMO system are generally described herein. An example apparatus of UE may include memory and processing circuitry to configure a MIMO transceiver to establish primary cell transmit and receive channels for communication with an eNodeB, and to receive a secondary cell addition signal that includes a preamble index for a secondary cell. The processing circuitry further configures the MIMO transceiver to receive beam reference signals (BRS), and select one of the BRS from the eNodeB as a secondary cell transmit channel for the secondary cell based on detected BRS receive power. The processing circuitry further configures the MIMO transceiver to provide information for the selected BRS, and provide xPRACH transmissions that include a transmit index to the eNodeB. The processing circuitry further configures the MIMO transceiver to receive selection of one of the xPRACH transmissions as a secondary cell receive channel.

    Method, apparatus and system for beam acquisition in a wireless system

    公开(公告)号:US10735077B2

    公开(公告)日:2020-08-04

    申请号:US16068110

    申请日:2016-02-04

    IPC分类号: H04B7/06 H04B7/0408 H04L5/00

    摘要: Machine-readable media, methods, apparatus and system for beam acquisition in a wireless system are disclosed. In some aspects, a base station may include a transceiver configured to map beam reference signals onto a plurality of transmission beams. The base station may further include a control module configured to divide the transmission beams into a plurality of groups, based at least in part on a plurality of logical indexes assigned to the transmission beams. The control module may be further be configured to divide the transmission beams of each of the groups into a plurality of sub-groups. The control module may be further configured to change a transmission beam order in at least one of the groups, in order to equalize and maximize logical index differences between transmission beams, which are adjacent to one another in a respective sub-group.

    SYSTEM AND METHOD FOR BEAM MANAGEMENT PROCEDURE CONFIGURATION

    公开(公告)号:US20200228180A1

    公开(公告)日:2020-07-16

    申请号:US16498805

    申请日:2018-04-02

    摘要: Systems and methods of beam reporting for multiple DL processes are described. A UE receives a beam management processes configuration that provides information about beam management reference signals for beam management procedures. The UE transmits a UE capability report that indicates beam management capabilities of the UE and, later, an indication of whether the UE intends to engage in beam refinement. The UE measures the beam management reference signals and receives a beam reporting message that indicates at least one of the beam management procedures to report. In response, the UE transmits the beam report. The beam report contains beam management reference signal measurements of the beam management procedures indicated by the beam reporting message.

    Reference signals for initial acquisition in 5G systems

    公开(公告)号:US10666343B2

    公开(公告)日:2020-05-26

    申请号:US16407154

    申请日:2019-05-08

    摘要: Disclosed herein are apparatuses, systems, and methods for reference signal design for initial acquisition, by receiving a first primary synchronization signal (PSS) and a first secondary synchronization signal (SSS) from a first transmit (Tx) beam, in first contiguous orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A UE can receive at least a second PSS and a second SSS from a second Tx beam in contiguous OFDM symbols of the downlink subframe. A UE can then detect beamforming reference signals (BRSs) corresponding to the first Tx beam and the second Tx beam, based on identification of physical cell ID information and timing information processed from the first PSS, the second PSS, the first SSS, and the second SSS. The UE can select the first Tx beam or the second Tx beam that was received with the highest power, based on the BRSs. Other embodiments are described.

    Method for Interference Measurement in New Radio (NR) Communication Systems

    公开(公告)号:US20200067614A1

    公开(公告)日:2020-02-27

    申请号:US16488039

    申请日:2018-03-22

    IPC分类号: H04B17/345 H04J11/00 H04L5/00

    摘要: An apparatus configured to be employed in a victim transmission reception point (TRP) associated with a new radio (NR) communication system is disclosed. The apparatus comprises a memory interface and a processing circuit. In some embodiments, the processing circuit is configured to process one or more predefined interference signals respectively received from one or more interfering TRPs during a guard period of the victim TRP. In some embodiments, the guard period comprises a time period between a downlink (DL) transmission and an uplink (UL) transmission associated with a time division duplex (TDD) frame of the victim TRP. In some embodiments, the processing circuit is further configured to determine an inter-TRP interference based on the one or more predefined interference signals. In some embodiments, the inter-TRP interference comprises a measurement of a UL interference at the victim TRP from the one or more interfering TRPs.

    RS (REFERENCE SIGNAL) SEQUENCE GENERATION AND MAPPING AND PRECODER ASSIGNMENT FOR NR (NEW RADIO)

    公开(公告)号:US20200052939A1

    公开(公告)日:2020-02-13

    申请号:US16500971

    申请日:2018-05-03

    IPC分类号: H04L27/26 H04L5/00

    摘要: Techniques discussed herein can facilitate RS (Reference Signal) sequence generation and mapping, and/or precoder assignment, for NR (New Radio). One example embodiment employable at a NR wireless communication device comprises processing circuitry configured to: generate one or more PN (Pseudo Noise) sequences based at least in part on an initial state of a PN generator; extract, for each PRB (Physical Resource Block) of one or more PRBs, an associated portion of an associated PN sequence of the one or more PN sequences, based at least in part on a reference subcarrier index, independent of a bandwidth part configuration and of a maximum supported number of PRBs; and generate, for each PRB of the one or more PRBs, an associated set of RS(s) for that PRB based at least in part on the extracted associated portion of the associated PN sequence for that PRB.

    METHOD AND APPARATUS FOR INTERFERENCE MEASUREMENT USING BEAM MANAGEMENT REFERENCE SIGNAL

    公开(公告)号:US20200021337A1

    公开(公告)日:2020-01-16

    申请号:US16484040

    申请日:2018-05-02

    摘要: Provided herein are a method and an apparatus for interference measurement using a beam management reference signal (BM-RS). The disclosure provides an apparatus for a user equipment (UE), comprising circuitry configured to: decode one or more beam management reference signals broadcasted by a Transmission Reception Point (TRP) in a cell, wherein the one or more beam management reference signals are used by the TRP to perform beam management for respective one or more other UEs in the cell; and measure interference from the one or more other UEs in the cell based on the decoded one or more beam management reference signals. According to some embodiments, the overhead for the interference measurement can be reduced since it is not necessary to allocate a separate CSI-RS for the purpose of interference measurement.

    METHOD AND APPARATUS FOR NUMEROLOGY CONFIGURATION IN NON-COHERENT JOINT TRANSMISSION

    公开(公告)号:US20200015203A1

    公开(公告)日:2020-01-09

    申请号:US16483393

    申请日:2018-04-20

    摘要: Provided herein are method and apparatus for numerology configuration in non-coherent joint transmission. The disclosure provides an apparatus for a user equipment (UE), comprising circuitry configured to: determine one or more numerologies defined for at least one of different codewords, different layers, and different links for a non-coherent joint transmission (NCJT) to the UE, the NCJT comprising a first transmission from a first access node and a second transmission from a second access node; and process the NCJT according to the determined one or more numerologies. Also provided is a configuration of one or more transmission schemes for at least one of different codewords, different layers, and different links for a NCJT to the UE. Some embodiments allow for uplink NCJT with one or more numerologies defined for at least one of different codewords, different layers, and different links.