Handling of radio frequency front-end group delays for round trip time estimation
摘要
說(shuō)明書(shū)
This summary identifies features of some example aspects, and is not an exclusive or exhaustive description of the disclosed subject matter. Whether features or aspects are included in, or omitted from this summary is not intended as indicative of relative importance of such features. Additional features and aspects are described, and will become apparent to persons skilled in the art upon reading the following detailed description and viewing the drawings that form a part thereof.
An exemplary method performed by a network entity is disclosed. The method may comprise determining a network total group delay (GD) comprising a network transmission GD and a network reception GD. The network transmission GD may indicate a time interval between a measured transmission time of a network Tx signal transmitted from the network entity and an actual transmission time of the network Tx signal leaving the network entity. The network reception GD may indicate a time interval between an actual arrival time of a network Rx signal at the network entity and a measured arrival time of the network Rx signal at the network entity. The method may also comprise transmitting, to a user equipment (UE), one or more round trip time (RTT) measurement (RTTM) signals on RTTM resources comprising downlink (DL) physical layer resources. Each RTTM signal may comprise an RTTM waveform. The method may further comprise receiving, from the UE, one or more RTT response (RTTR) signals on RTTR resources comprising uplink (UL) physical layer resources. Each RTTR signal may correspond to one or more of the transmitted RTTM signals and may comprise an RTTR waveform and an RTTR payload. The method may yet further comprise determining an RTT between the UE and the network entity based on the RTTM signal(s), the RTTR signal(s), and the network total GD.
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