DISTRIBUTED ANTENNA SYSTEM MULTIPLE DELAY SUPPORT

    公开(公告)号:US20250038789A1

    公开(公告)日:2025-01-30

    申请号:US18759070

    申请日:2024-06-28

    Abstract: Techniques related to accommodating multiple delay targets in a distributed antenna system are described. The distributed antenna system is configured to determine at least one equalized delay value for a plurality of remote units based on each of a plurality of delay targets. The distributed antenna system also controls signals transmission times of at least one node based on the at least one delay value so that downlink radio frequency signals are transmitted from each of the remote units with a total delay that satisfies each of the delay targets.

    A METHOD FOR TRANSMISSION OF DOWNLINK RADIO SIGNALS IN A D-MIMO SYSTEM AND A D-MIMO SYSTEM

    公开(公告)号:US20250007562A1

    公开(公告)日:2025-01-02

    申请号:US18709611

    申请日:2021-11-17

    Abstract: A method for transmission of DownLink, DL, radio signals in a Distributed Multiple Input Multiple Output, D-MIMO, system of a Radio Access Network, RAN. The D-MIMO system comprises a Central Unit, CU, with Digital Signal Processing, DSP, a first remote radio-head and a second remote radio-head, an analogue optical fronthaul link.
    The method comprises receiving (500a) a respective first and second UL transmission from the wireless communications device via the respective first and second remote radio-head over the analogue optical fronthaul link.
    The method further comprises estimating (501a) a respective first and second effective UL channel for signals from the wireless communications device via the first and second remote radio-head based on applying DSP to the respective first and second UL transmission.
    The method further comprises estimating (503) a respective first and second calibration channel based on applying DSP to a respective first and second reference radio signal transmitted wirelessly between the first remote radio-head and the second remote radio-head.
    The method further comprises synchronizing (505) a respective first and second DL radio signal from the respective first and second remote radio-head to the wireless communications device by compensating the second DL transmission based on the estimated second effective UL channel, and further based on the estimated first and second calibration channels.

    Wireless system
    5.
    发明授权

    公开(公告)号:US12185134B1

    公开(公告)日:2024-12-31

    申请号:US18607509

    申请日:2024-03-17

    Applicant: Khue Duong

    Inventor: Khue Duong

    Abstract: A method of wireless communication at a wireless repeater device controlled by a base station in a wireless communication network includes receiving, from the base station, control signaling comprising control information, in association with traffic relayed through the repeater device between a first wireless communication device and a second wireless communication device; and configuring a relay unit of the repeater device to communicate the traffic between the first wireless communication device and the second wireless communication device using at least one of: the time division duplex state, the fronthaul-link TCI state index, the access-link TCI state index, or the time domain resource allocation.

    UE ASSISTED ON-DEMAND ROBUST PHASE CALIBRATION ALGORITHM FOR DISTRIBUTED MIMO BASED ON MULTI-PORT CSI-RS PMI FEEDBACK

    公开(公告)号:US20240421858A1

    公开(公告)日:2024-12-19

    申请号:US18604406

    申请日:2024-03-13

    Abstract: A method of operating a network entity includes transmitting, via a first TRP and a second TRP, a first DL RS; receiving from a UE, based on the first DL RS, first CSI; determining, based on the first CSI, a calibrated quadrant; transmitting, via the first TRP and the second TRP, a second DL RS based on the calibrated quadrant; and receiving from the UE, based on the second DL RS, second CSI. The method further includes, for N iterations, determining, based on the (N+1)th CSI, an adjusted calibrated phase; transmitting, via the first TRP and the second TRP, an (N+2)th DL RS based on the adjusted calibrated phase; and receiving from the UE, based on the (N+2)th DL RS, (N+2)th CSI. The method further includes, after the N iterations, determining, based on a most recently received (N+2)th CSI, a converged calibrated phase.

    Geolocation of radio frequency devices using spaceborne phased arrays

    公开(公告)号:US12143197B2

    公开(公告)日:2024-11-12

    申请号:US18199629

    申请日:2023-05-19

    Abstract: A communication system has a phased antenna array configured to communicate via a plurality of beams with a wireless device, such as user equipment (e.g., a smart phone). The plurality of beams defines a field of view of the phased antenna array, the field of view having a plurality of cells and each of the plurality of beams is associated with one of the plurality of cells within the field of view. A processing device detects the wireless device within the field of view and determines a coarse geographic location of the wireless device within the field of view of the wireless device when the wireless device is within the field of view, or within a cell. The system further determines a fine geographic location for the wireless device based on frequency offset (due to Doppler) and signal flight time.

    Multiple transmission panels and non-ideal backhaul links

    公开(公告)号:US12143174B2

    公开(公告)日:2024-11-12

    申请号:US18095239

    申请日:2023-01-10

    Abstract: A method of configuring a multichannel uplink transmission comprising multiple channels between a wireless communication device and multiple receive panels of at least one network node is provided. The multiple receive panels and the at least one network node are connected via backhaul links. The method is carried out by the wireless communication device. The method comprises receiving, from the at least one network node, a downlink message encoding control data for the multichannel uplink transmission, the control data being associated with the backhaul links. The method further comprises configuring the multichannel uplink transmission based on the control data.

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