UL (UPLINK) CONTROL DESIGN FOR UNLICENSED SPECTRUM

    公开(公告)号:EP3400671A1

    公开(公告)日:2018-11-14

    申请号:EP17701367.9

    申请日:2017-01-04

    CPC classification number: H04L5/0053 H04L5/0051 H04L5/0055 H04L5/0057 H04L5/06

    Abstract: Techniques for communicating UCI (Uplink Control Information) in unlicensed band systems are discussed. One example embodiment comprises a memory; and one or more processors configured to: generate an ePUCCH (enhanced Physical Uplink Control Channel) in a subframe via a first interlace of an unlicensed frequency band, wherein the first interlace comprises a plurality of non-contiguous RBs (Resource Blocks) equally spaced in a frequency domain; generate a UCI message for the unlicensed frequency band, wherein the UCI message comprises one or more of HARQ (Hybrid Automatic Repeat Request) ACK (Acknowledgement) feedback, CSI (Channel State Information), or a SR (Scheduling Request); and map the UCI message to the first interlace for the ePUCCH.

    ENERGY DETECTION THRESHOLD ADAPTATION FOR LICENSED ASSISTED ACCESS OF LTE IN UNLICENSED BAND

    公开(公告)号:EP3335508A1

    公开(公告)日:2018-06-20

    申请号:EP15834696.5

    申请日:2015-12-26

    CPC classification number: H04W28/18 H04J2211/005 H04W16/14 H04W74/0808

    Abstract: When performing a contention protocol, such as Listen-Before-Talk (LBT), an Long Term Evolution (LTE)-Licensed Assisted Access (LAA) node dynamically adapts the ED threshold used by the LTE-LAA node depending on whether other transmission nodes are detected at the frequency components that are to be used by the LTE-LAA node. In one implementation, the ED threshold value may initially be set to a conservative value, and when other transmissions nodes are not detected, the ED threshold value may be set to a more aggressive value. In another implementation, the ED threshold value may initially be set to a more aggressive value, and only when another transmission node is detected, the ED threshold value may be set to a more conservative value. In yet another possible implementation, the ED threshold value and the transmit power may be proportionally modified, for a particular UE, based on a parameter associated with the UE.

    LAA (LICENSE ASSISTED ACCESS) BURST CONTROL INFORMATION
    80.
    发明公开
    LAA (LICENSE ASSISTED ACCESS) BURST CONTROL INFORMATION 审中-公开
    LAA(许可协助访问)突发控制信息

    公开(公告)号:EP3251458A1

    公开(公告)日:2017-12-06

    申请号:EP15820942.9

    申请日:2015-12-11

    CPC classification number: H04W74/0816 H04W16/14

    Abstract: Techniques for transmission of license assisted access (LAA) burst control information are discussed. One example apparatus that can employ such techniques in an evolved nodeB (eNB) includes a processor and transmitter circuitry. The process can generate a license assisted access (LAA) burst comprising a channel reservation signal, a LAA preamble, one or more downlink (DL) control channel messages, and one or more data payloads; can generate LAA burst control information associated with the LAA burst, wherein the LAA burst control information indicates a length of the LAA burst; and can generate a physical layer encoding of the LAA burst control information. The transmitter circuitry can transmit the physical layer encoding of the LAA burst control information via an unlicensed carrier.

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