LTE-A systems and method of DRS based positioning

    公开(公告)号:US09986373B2

    公开(公告)日:2018-05-29

    申请号:US14662886

    申请日:2015-03-19

    Abstract: A Long Term Evolution Advanced (LTE-A) location server, user equipment (UE) and evolved Node-B (eNB) are generally described. Information may be transmitted to the UE from the location server. The transmission may be triggered by the location server or another entity requesting the UE location. The information may permit the UE to receive a discovery reference signal (DRS) from at least one eNB. The information may contain an indication of measurements to be performed using the DRS. The UE may measure Reference Signal Received Power (RSRP) or Reference Signal Time Difference (RSTD) of the DRS. The UE may send the measurement information to the location server where the UE location is estimated. The UE location may be based on measurements of the DRS and a positioning reference signal (PRS) from one or more eNBs to obtain the Observed Time Difference of Arrival (OTDOA) or Enhanced Cell ID (ECID).

    NON-ORTHOGONAL SUPERPOSITION TRANSMISSIONS FOR MULTIMEDIA BROADCAST MULTICAST SERVICE (MBMS)

    公开(公告)号:US20180069651A1

    公开(公告)日:2018-03-08

    申请号:US15557067

    申请日:2015-10-30

    Abstract: Technology for an eNodeB operable to perform multiuser non-orthogonal superposition transmissions for multimedia broadcast multicast service (MBMS) is disclosed. The eNodeB can modulate a first physical multicast channel (PMCH) signal for MBMS with a first modulation and coding scheme (MCS). The eNodeB can modulate a second PMCH signal for MBMS with a second MCS. The eNodeB can multiplex the first PMCH signal and the second PMCH signal to form an aggregate PMCH signal. The eNodeB can transmit the aggregate PMCH signal to a plurality of UEs using multiuser non-orthogonal superposition for MBMS, wherein the first PMCH signal in the aggregate PMCH signal is transmitted using physical resource blocks (PRBs) that are partially or fully overlapped in time and frequency with PRBs of the second PMCH signal in the aggregate PMCH signal.

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