Method performed by a first node (101) for managing a movement of a radio antenna (120). The first node (101) operates in a wireless communications network (100). The first node (101) determines (302) whether the movement of the radio antenna (120) is above a threshold over a time period. The radio antenna (120) is connected to a second node (102) operating in the wireless communications network (100). The movement is with respect to at least one wireless device (140) operating in the wireless communications network (100). The determining (302) is based on an analysis of one or more properties of radio transmissions to or from the radio antenna (120) over the time period. The first node (101) initiates (304) providing a message to one of: the second node (102) and a third node (103) operating in the wireless communications network (100). The initiation is based on a result of the determination.

Method performed by a first node (101) for managing a movement of a radio antenna (120). The first node (101) operates in a wireless communications network (100). The first node (101) determines (302) whether the movement of the radio antenna (120) is above a threshold over a time period. The radio antenna (120) is connected to a second node (102) operating in the wireless communications network (100). The movement is with respect to at least one wireless device (140) operating in the wireless communications network (100). The determining (302) is based on an analysis of one or more properties of radio transmissions to or from the radio antenna (120) over the time period. The first node (101) initiates (304) providing a message to one of: the second node (102) and a third node (103) operating in the wireless communications network (100). The initiation is based on a result of the determination.

The described technology is generally directed towards adaptively changing which transmission scheme a user equipment is to use based on a Doppler metric (e.g. Doppler frequency) as evaluated against a threshold Doppler value. A network instructs a user equipment to use a Rank-1 precoder cycling transmission scheme if the Doppler metric of user equipment is above a threshold value, or to use a closed loop MIMO transmission scheme if the user equipment has a Doppler metric below the threshold value. The network can instruct the user equipment via a suitable message, or by switching off TPMI and notifying the user equipment thereof.

Methods, apparatus, systems and articles of manufacture are disclosed to validate data communicated by a vehicle. An example apparatus an anomaly detector to, in response to data communicated by a vehicle, at least one of compare an estimated speed with a reported speed or compare a location of the vehicle with a reported location. The apparatus including the anomaly detector further to generate an indication of the vehicle in response to the comparison. The apparatus further includes a notifier to discard data sent by the vehicle and notify surrounding vehicles of the data communicated by the vehicle.

A determination of a spatial position of a transmitter which emits a wireless signal is provided. A receiver which moves relative to the transmitter receives the wireless signal and analyses a Doppler shift in the received signal. Information is generated for specifying possible spatial positions of the transmitter based on a point of time when a sign in the Doppler shift changes. In this way, a very simple and efficient determination of possible locations of the transmitter can be achieved.

Systems, methods, and devices are disclosed herein for Doppler based position estimation. Systems may include an antenna configured to receive a radio frequency (RF) signal from an emitter, and configured to generate an output signal based on the received RF signal. Systems may also include a receiver configured to receive the output signal from the antenna. The receiver may include one or more processors configured to identify a plurality of initial conditions for a plurality of state variables associated with the emitter, obtain a measurement of the RF signal from the emitter and an estimate of an uncertainty associated with the measurement, and generate an output based, at least in part, on an updated estimate of the plurality of state variables, the output identifying a position, velocity, and carrier frequency of the emitter. Systems may also include a communications interface configured to communicatively couple the antenna with the receiver.

Systems, methods, and devices are disclosed herein for Doppler based position estimation. Systems may include an antenna configured to receive a radio frequency (RF) signal from an emitter, and configured to generate an output signal based on the received RF signal. Systems may also include a receiver configured to receive the output signal from the antenna. The receiver may include one or more processors configured to identify a plurality of initial conditions for a plurality of state variables associated with the emitter, obtain a measurement of the RF signal from the emitter and an estimate of an uncertainty associated with the measurement, and generate an output based, at least in part, on an updated estimate of the plurality of state variables, the output identifying a position, velocity, and carrier frequency of the emitter. Systems may also include a communications interface configured to communicatively couple the antenna with the receiver.

Embodiments of the present disclosure are related to system and method of classifying speed of at least one user equipment (UE). The method comprises receiving a plurality of input signals associated with the at least one UE. Also, method comprises estimating a plurality of channels using a plurality of reference signals associated with the inputs signals. Further, the method comprises computing a metric between the estimated plurality of channels and classifying speed of the at least one UE using the computed metric. The classifying the at least one UE using the metric comprises obtaining a power spectral density (PSD) from the metric, estimating a Doppler spectrum width using the PSD and classifying the at least one UE by comparing the Doppler spectrum width with one or more threshold values.

Embodiments of the present disclosure are related to system and method of classifying speed of at least one user equipment (UE). The method comprises receiving a plurality of input signals associated with the at least one UE. Also, method comprises estimating a plurality of channels using a plurality of reference signals associated with the inputs signals. Further, the method comprises computing a metric between the estimated plurality of channels and classifying speed of the at least one UE using the computed metric. The classifying the at least one UE using the metric comprises obtaining a power spectral density (PSD) from the metric, estimating a Doppler spectrum width using the PSD and classifying the at least one UE by comparing the Doppler spectrum width with one or more threshold values.

Methods and systems are provided for dynamically adjusting broadcast beam patterns of a wavefront emitted by an antenna array based on the velocities of devices communicatively coupled to the base station associated with the antenna array. The broadcast beam patterns can be adjusted by modifying the broadcast mode or at least one phase, amplitude, or power of the at least one antenna associated with the base station. Adjusting the beam pattern, for example between multiple beams and a single unified beam, based on device types can improve the quality of service for the devices and reduce the processing burden of the base station.