EVOLVED NODE-B AND USER EQUIPMENT AND METHODS FOR OPERATION IN A COVERAGE ENHANCEMENT MODE

    公开(公告)号:US20200037278A1

    公开(公告)日:2020-01-30

    申请号:US16538823

    申请日:2019-08-13

    Abstract: Embodiments of an eNB to operate in accordance with a coverage enhancement mode are disclosed herein. The eNB may comprise hardware processing circuitry to, during a legacy sub-frame, transmit a system information block (SIB) in legacy SIB frequency resources according to a legacy SIB transmission format and refrain from transmission of channel state information reference signals (CSI-RS). The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first portion of the SIB in first SIB frequency resources included in the legacy SIB frequency resources. The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first set of CSI-RS in first CSI-RS frequency resources that include at least a portion of the legacy SIB frequency resources.

    User equipment and synchronization methods for device to device (D2D) communication

    公开(公告)号:US10194411B2

    公开(公告)日:2019-01-29

    申请号:US15505387

    申请日:2015-09-24

    Abstract: Embodiments of a User Equipment (UE) and methods for device-to-device (D2D) communication are generally described herein. In some embodiments, the UE may determine a network reference timing based on a reception of a primary synchronization signal (PSS) from an Evolved Node-B (eNB). The UE may transmit a primary device-to-device synchronization signal (PD2DSS) to a second UE according to the determined network reference timing. The PD2DSS may be configured to enable synchronization for a device-to-device (D2D) communication session between the UE and the second UE. In some embodiments, the PD2DSS may be based on multiple PD2DSS symbol sequences, which may be different than PSS symbol sequences used for the PSS. In some embodiments, different Zadoff-Chu (ZC) sequences may be used for the PD2DSS and for the PSS.

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