This application provides a satellite communication method and an apparatus. The method includes: receiving, by a terminal device, first information sent by a satellite, where the first information is used to indicate a first timing change rate range; measuring and obtaining, by the terminal device, a first downlink timing change rate; determining a first uplink timing change rate based on the first downlink timing change rate and the first timing change rate range; and performing uplink communication with the satellite based on the first uplink timing change rate. The method can effectively resolve a problem of uplink timing drift and improve uplink performance.

A first base station (131) is configured to notify a second base station (132) of frequency accuracy information indicating frequency accuracy of the first base station (131) in a wireless manner or via a backhaul.

Aspects provide for autonomous adjustment of the uplink and downlink transmission timing in wireless communication networks. A scheduled entity (e.g., a user equipment (UE) or child integrated access backhaul (IAB) node) may observe a change in the downlink reception timing of downlink signals transmitted from a scheduling entity (e.g., a base station or parent IAB node). The scheduled entity may then autonomously adjust its uplink transmission timing to compensate for the change in downlink reception timing. In addition, the scheduled entity may further maintain the same downlink transmission timing irrespective of the change in downlink reception timing.

A mobile device may receive a plurality of timestamps, wherein the plurality of timestamps indicate sending and receiving time for ranging packets and response packets. The mobile device may calculate a responder turn-around time as a first difference between the second time and the first time. The mobile device may calculate a responding round trip time as a second difference between the second time and the third time. The mobile device may receive from the electronic device an initiator turn-around time and an initiator round trip time. The mobile device may calculate a frequency offset for the wireless protocol using the responder turn-around time, the responding round trip time, the initiator turn-around time, and the initiator round trip time. The mobile device may compare an observed frequency offset to the calculated frequency offset to determine a frequency offset difference and whether it exceeds a threshold, adjusting a ranging measurement.

Provided are a system and method for generating phase-coherent signaling via invocation of a respective phase synchronization calibration factor among wireless communications nodes. The calibration factor substantially and simultaneously removes an effect of multipath interference and propagation phase shift as between the nodes, thus allowing a direct correlation of phase with respect thereto in a subsequent phase-based ranging regime.

An electronic device is provided. The electronic device includes a communication module, a memory, and a processor operatively connected to the communication module and the memory, the processor is configured to transmit a synchronization signal for generating a synchronization marker to a first sensor device and a second sensor device, receive and store first sensor data, receive and store second sensor data, select reference data serving as a reference from among the first sensor data and the second sensor data, detect the synchronization marker, calculate a required time between synchronization markers of the reference data based on stored sampling information of the reference data and positions of the synchronization marker included in the reference data, and correct and store sampling information of the remaining sensor data other than the reference data.

Methods, systems, and devices for wireless communications are described. The method may include establishing a connection between the UE and a network node of a non-terrestrial network, identifying, based on a synchronization failure event and while the UE is in a connected mode in accordance with establishing the connection, that a location failure condition has occurred for the connection, and performing, at least in part in response to the location failure condition, one or more actions of a location failure recovery procedure to restore a synchronization associated with the connection.

A method and apparatus for synchronizing the oscillators onboard satellites of a same network, while minimizing relativistic effects. The method consists of identifying a reference signal having minimal Doppler frequency shifting; adjusting the frequency of an ovenized oscillator to the minimally shifted reference signal, and repeating the process for all satellites of a satellite train having a similar orbital path. Subsequently, the clocks on board the satellites of a same train can be set to a same time, by relaying a clock synchronization protocol between the satellites. The method includes a number of error measurement techniques allowing to further compensate for relativistic effects and make further corrections over time.

Some examples of handling FTM requests comprises receiving a plurality of fine timing measurement (FTM) requests from a second network device over a first channel. Determining a channel traffic along the first channel. Adjusting a FTM response frequency based on the channel traffic. Responding based on the FTM response frequency, to a first number of FTM requests out of the plurality of FTM requests.

Embodiments include detection of physical events associated with a wireless network, where the detected physical events are associated with the measurable effects on radio signals between devices in the wireless network. The detected physical event and associated radio signal information is used to provide precise low cost time synchronization for a device in a network.