DESIGN OF CSI MEASUREMENT AND FEEDBACK FOR EMTC-U SYSTEM

    公开(公告)号:US20190044598A1

    公开(公告)日:2019-02-07

    申请号:US16133208

    申请日:2018-09-17

    摘要: Techniques described herein can facilitate Channel-State Information (CSI) measurement and feedback for communication in unlicensed spectrum or Sounding Reference Signal (SRS) transmission and/or channel-state estimation for communication in unlicensed spectrum. In an example, an apparatus is configured to be employed in a User Equipment (UE), and the apparatus comprises a Radio Frequency (RF) circuitry interface and processing circuitry configured to perform CSI measurement for communication in unlicensed spectrum. The apparatus further generates data for feedback according to the CSI measurement, and sends the data for feedback to RF circuitry via the RF circuitry interface. In an example, a frame structure of a data channel begins with a downlink (DL) transmission or soon after an initial signal. In an example, the CSI measurement includes measuring Channel Quality Information (CQI) for one or more sub-bands.

    TIMING ADVANCE FOR GRANTLESS UPLINK TRANSMISSION

    公开(公告)号:US20200245278A1

    公开(公告)日:2020-07-30

    申请号:US16648653

    申请日:2018-07-13

    IPC分类号: H04W56/00 H04W80/08 H04W74/08

    摘要: Described is an apparatus of an Evolved Node-B (eNB) operable to communicate with a User Equipment (UE) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to determine a first Timing Advance (TA) for Scheduled Uplink (SUL) transmission. The circuitry may also be operable to determine a second TA for Grantless Uplink (GUL) transmission. The second circuitry may be operable to generate an SUL transmission for transmission at a timing based upon the first TA. The second circuitry may also be operable to generate a GUL transmission for transmission at a timing based upon the second TA.

    ENHANCED CELL SEARCH AND SYSTEM INFORMATION ACQUISITION

    公开(公告)号:US20200169363A1

    公开(公告)日:2020-05-28

    申请号:US16496363

    申请日:2018-03-20

    摘要: Embodiments of efeMTC synchronization signals for enhanced cell search and enhanced system information acquisition are described. In some embodiments, an apparatus of a base station (BS) is configured to generate a length-x sequence for an efeMTC synchronization signal, the length-x sequence configured for repetition in frequency domain within 6 physical resource blocks (PRB). In some embodiments, to generate the length-x sequence, the BS may be configured to select any one index of the set of root indices {1, 2, . . . , 63}, excluding the root indices 25, 29 and 34, to correspond to a different physical-layer cell identity (PCID). In some embodiments, the BS may be configured to encode RRC signaling to include a System Information Block (SIB) comprising configuration information for transmission of the efeMTC synchronization signal, and transmit the length-x sequence as the efeMTC synchronization signal in frequency resources according to the SIB.