A first offset compensator configured to compensate for frequency offsets occurring during communications between a plurality of communication devices and a relay device, wherein when the first offset compensator is provided on the relay device, the first offset compensator gives a statistical frequency offset obtained from a statistic of a plurality of frequency offsets occurring during communications between respective ones of the plurality of communication devices and the relay device to a receiver configured to receive wireless signals transmitted from respective ones of the plurality of communication devices, and when the first offset compensator is provided on each of the plurality of communication devices, the first offset compensator gives a frequency offset occurring during communications between the communication device provided with the first offset compensator and the relay device to a transmitter configured to transmit wireless signals to the relay device.

The present application provides a time synchronization method and an electronic device. The method includes sending a clock synchronization signal and first real time clock (RTC) information separately; and the clock synchronization signal is configured to measure a delay between a first module and at least one second module, the delay is used for phase compensation performed on the clock synchronization signal received at the side of the at least one second module, and the clock synchronization signal after being subjected to the phase compensation is configured to trigger the at least one second module to update local second RTC information to the first RTC information.

Various solutions for satellite access network (SAN) or non-terrestrial network (NTN) measurement with respect to user equipment and network apparatus in mobile communications are described. An apparatus may determine a first number of synchronization signal blocks (SSBs) or SSB-based radio resource management (RRM) measurement timing configurations (SMTCs) overlapped in a time domain. The apparatus may determine a second number of satellites to be measured in each of the SMTCs. The apparatus may calculate a scaling factor according to the first number and the second number. The apparatus may determine a measurement period by applying the scaling factor. The apparatus may perform measurements on the satellites within the measurement period.

Some techniques described herein provide selective application of a validity duration, cessation of transmission of a tracking reference signal (TRS), indication of an availability indication via a paging PDCCH when no user equipment (UE) is paged, and application of an availability indication based at least in part on an offset such that the availability indication is applied only after the availability indication is received. By selectively applying the validity duration, the network can avoid being bound to a validity duration when no TRS is to be transmitted. The network can cease transmission of a TRS during a validity duration, or may reduce the occurrence of repeated validity durations, thereby reducing overhead. By indicating the availability indication when no UE is paged, the network can update availability indication even when no UE is paged, which reduces overhead relative to only updating availability indication when a UE is paged.

A method for transmitting a PTRS by a transmitting node may include: identifying a time density and a frequency density of PTRS; identifying a first offset based on the frequency density of PTRS and a second offset based on N times the frequency density of PTRS, N being an integer equal to or greater than 2; determining a position of a subcarrier to transmit a first PTRS and a position of a subcarrier to transmit a second PTRS using the first offset and the second offset; determining a resource block (RB) to transmit each of the first PTRS and the second PTRS from resources allocated to a receiving node; configuring a data channel including data, demodulation reference signals (DMRSs) for demodulation of the data, the first PTRS, and the second PTRS; and transmitting the data channel to the receiving node.

An electronic clock which is a communication device includes: a transceiver configured to communicate with another communication device including first software and second software; and at least one processor. The processor: controls the transceiver to perform a certain communication with the first software; and causes, after the certain communication ends, the transceiver to transmit a notification for notifying the second software of the end of the certain communication.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a synchronization signal block (SSB) transmitted by a base station. The UE may receive system information that includes reconfigurable intelligent surface (RIS) or repeater assisted initial access information that identifies a set of SSBs that are associated with an RIS or a repeater and a modulation signature associated with the RIS or the repeater. The UE may selectively perform initial access using the SSB or search for another SSB based at least in part on the RIS or repeater assisted initial access information. Numerous other aspects are described.

A hub may receive event data captured by a body-worn device and store the event data in a memory of the hub. The event data is then backed up from the hub to a memory of an additional hub communicatively connected to the hub. A copy of event data for a predetermined period of time as included in the event data is then transferred from the memory of the hub to a data store of a network operations center (NOC). In response to the transfer being complete, the hub may delete the event data for the predetermined period of time, send a first command to the additional hub directing the additional hub to delete a backup of the event data for the predetermined period of time, or send a second command to the body-worn device directing the body-worn device to delete the event data for the predetermined period of time.

One embodiment disclosed in the present specification provides a method for a vehicle to everything (V2X) communication, comprising: determining position of at least one frequency for at least one synchronization signal block (SSB), wherein the position of the at least one frequency is determined based on a channel raster for new radio (NR) V2X, wherein the channel raster for the NR V2X is determined based on a first frequency shift of −5 kHz or 5 kHz.

In an embodiment, a method comprises: sending a message from a master unit of a distributed antenna system to a remote unit of the distributed antenna system, wherein the message includes a list of service frequencies and applied standards for a base station; sending a downlink signal generated based on a base station signal from the master unit to the remote unit; decoding the downlink signal based on the list of service frequencies and applied standards for the base station; extracting a base station clock signal from the decoded downlink signal; and synchronizing an internal clock of the remote unit to the base station clock using the extracted base station clock signal.