A relay station comprising: a time server that supplies time-synchronized pulse data generated every second; and a symbol counter that counts symbol periods used in communication, based on the pulse data. The relay station transfers an upstream signal to a simulcast controller, by including in the upstream signal a first count value of the symbol counter that indicates a timing when synchronization with the upstream signal is established. The simulcast controller calculates a second count value based on the first count value to indicate a timing of transmission of the downstream signal from the relay station to the terminal device, transfers the downstream signal for transmission from the relay station to the terminal device, with the second count value being included in the downstream signal. The relay station starts transmitting the downstream signal based on the second count value.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a set of carriers configured for communications between the UE and one or more transmission reception points (e.g., a set of transmission points). The UE may receive multiple communications over different carriers and determine a time difference or delay between two of the carriers (e.g., a first carrier and a second carrier). Based on the time difference and a time difference threshold, the UE may perform a throughput degradation procedure such as transmitting a report indicating the time difference, transmitting a feedback report with channel quality information determined based on the time difference, etc.

A user equipment (UE) may monitor multiple beam pair links (BPLs) including a first BPL currently used by the UE to communicate with a network node (e.g., a base station), and a second BPL. The first BPL comprises a first network beam and a first UE beam, and the second BPL comprises a second network beam and a second UE beam. The UE may decide to switch beams from using the first BPL to using the second BPL based on signaling from the network node or autonomously. When the beam switch is made, the UE switches uplink (UL) transmission from over the first UE beam to over the second UE beam. After the beam switch is made, the UE transmits in the UL over the second UE beam using UL timing adjusted based on the first and second propagation delays.

Method and apparatus are disclosed for mitigating issues for a vehicle executing a remote vehicle operation, wherein there is a communication delay between the vehicle and a remote computing device providing control. An example vehicle includes a communication system, an autonomy unit for performing a remote vehicle operation, and a processor. The processor is configured to receive a remote vehicle operation control signal via the communication system from a remote computing device. The processor is also configured to determine a delay corresponding to the control signal. And the processor is further configured to modify the remote vehicle operation responsive to determining that the delay rises above a delay threshold at a threshold rate.

In accordance with a first aspect of the present disclosure, a method for determining the position of a node in a communication network is conceived, wherein said network comprises said node and a plurality of anchors, the method comprising: the node transmits a poll message to the plurality of anchors; a first anchor of said plurality transmits a response message to the node and to one or more other anchors of said plurality of anchors; a processing unit calculates the position of the node using timing information of the poll message transmission by the node, of the poll message reception by the plurality of anchors, of the response message transmission by the first anchor, and of the response message reception by the node and the other anchor or anchors. In accordance with other aspects of the present disclosure, a corresponding computer program and a corresponding system for determining the position of a node in a communication network is provided.

The present technology relates to a mobile terminal, an information processor, an information processing method, and a program capable of synchronizing time with high precision even in a case where the number of satellites that can be captured is small.

In a case where the number of satellites that can be captured is less than a predetermined number, a mobile terminal of one aspect of the present technology does not perform positioning, and generates and outputs, from a positioning unit, pulse signals at predetermined intervals synchronized with a time of the satellite that can be captured, on the basis of information from the satellite. The mobile terminal then maintains time synchronization of wireless communication with an external device of a wireless communication unit with reference to the pulse signal, and performs the wireless communication. The present technology can be applied to terminals equipped with a positioning function based on GNSS and a wireless communication function such as LPWA.

Embodiments of the present invention provide a base station, a terminal device, and a communication system for inter-base station carrier aggregation. A primary base station of the terminal sends a message including indication information to request the terminal device to report a timing offset between the primary base station and a secondary base station of the UE. The secondary base station calculates a corrected measurement gap information according to a measurement gap information and the timing offset. In a second measurement gap period indicated by the corrected measurement gap information, the terminal device is not scheduled.

According to embodiments described herein, a long delay-detector improves delay estimation performance for PRACH for many practical deployment scenarios. This, for example, reduces the risk that the timing advance of the UE is set incorrectly and hence reduces the risk that subsequent communication fails and that the UE spreads unnecessary interference to other communication in the system.

A time synchronization slave apparatus and a method of determining a time synchronization period are disclosed. In the apparatus, a time synchronization processing unit performs a time synchronization operation and determines an offset and a rate used to correct local time error based on a calculated time error, a timer corrects the local time based on the determined offset and rate, a time error estimation unit estimates a time error in the local time during a present time synchronization period, and generates excess error information regarding an excess point at which the estimated time error exceeds a threshold allowable time error range, a time synchronization period determination unit determines a subsequent time synchronization period based on the excess error information, and a synchronization period information transmission unit transmits synchronization period information regarding the subsequent time synchronization period to a time synchronization master apparatus.

In busy 5G and 6G networks, precise timing and synchronization are key to maintaining throughput with low fault rates. Disclosed are systems and methods for adjusting each user device's clock for proper reception, including downlink propagation delays, uplink propagation delays, round-trip propagation delays, and Doppler shifts, individually for each user device, and including any uplink/downlink asymmetries. The clock adjustment and timing advance of each user device is based on a predetermined transmission schedule for timing signals, broadcast by the base station. The Doppler shift is measured by the base station, according to uplink timing signals, and communicated to the user device in a single final timing signal. The single final timing signal is either frequency-shifted by the measured Doppler shift, or delayed proportional to the Doppler shift, either of which indicates, to the user device, how to apply the correct timing to future uplink messages.