A signal distribution system includes: a first signal divider arranged to generate a first output oscillating signal according to a first input oscillating signal; a second signal divider arranged to generate a second output oscillating signal according to the first input oscillating signal; a first transmitting channel coupled to the first signal divider and the second divider for transmitting the first input oscillating signal to the first signal divider and the second signal divider; and a second transmitting channel coupled to the first signal divider and the second divider for transmitting a second input oscillating signal to the first signal divider and the second signal divider; wherein the first input oscillating signal has a first frequency, the second input oscillating signal has a second frequency, and the second frequency is smaller than the first frequency.

Provided is a communication device including a plurality of antenna elements and that performs wireless communication in a high frequency band while suppressing the circuit scale.

The communication device includes: a communication unit that transmits and receives a wireless signal using a plurality of antenna elements; and a control unit that controls compensation for degradation in communication quality in the communication unit on the basis of control information received from outside. The communication unit includes a plurality of wireless interfaces and a delay compensation unit that compensates for delay of the wireless interfaces. The control unit determines whether or not to perform the compensation on the basis of capability information exchanged with a communication partner.

A communication device includes: a computing circuit, performing a J.sup.th power operation according to a first plurality of time-domain signals to generate a first plurality of computed signals; a transforming circuit, coupled to the computing circuit, transforming the first plurality of computed signals to a first plurality of frequency-domain signals according to a time-frequency transformation; a control circuit, coupled to the converting circuit, performing an absolute value operation on the first plurality of frequency-domain signals to generate a first plurality of output signals; a selecting circuit, coupled to the control circuit, selecting a maximum output signal satisfying a check condition from the first plurality of output signals; and a frequency estimating circuit, coupled to the selecting circuit, estimating a carrier frequency offset according to the maximum output signal.

A terminal is disclosed including a receiver that receives configuration information indicating a gap offset in subframe units related to a measurement gap (MG), and a shift time shorter than one subframe and related to the MG. The terminal further includes a processor that determines a timing of the MG based on the gap offset and the shift time. In other aspects, a radio communication method for a terminal and a base station are also disclosed.

Disclosed are a method and an apparatus for transmitting uplink data by means of multiple serving cells. A method for a terminal for transmitting uplink data by means of multiple serving cells may comprise the steps of: the terminal receiving a first timing advance command (TAC) for a first serving cell and a second TAC for a second serving cell; and determining whether the terminal transmits uplink data by means of the second serving cell on the basis of whether the timing difference is below the threshold value, wherein the timing difference is acquired on the basis of the first TAC and the second TAC, and the first serving cell can be a cell configured so that an uplink can be always transmitted regardless of the timing difference.

Techniques for estimating a coverage area for a distributed antenna system (DAS) or a repeater system are disclosed. In one particular exemplary embodiment, the techniques may be realized as a system for estimating a coverage area for a distributed antenna system (DAS) or a repeater system. The system may comprise one or more processors communicatively coupled to a mobile communications network. The one or more processors may be configured to identify a sector as being a base station sector that deploys a distributed antenna system (DAS) or a repeater system. The one or more processors may also be configured to determine an approximate location for one or more antennas deployed by the distributed antenna system (DAS) or the repeater system. The one or more processors may further be configured to construct an estimated coverage area for the base station sector that deploys the distributed antenna system (DAS) or the repeater system.

Provided are a wireless communication method and device. The method is applied to a NTN system. The method includes: receiving, by a terminal device, a first signal sent by a network device in a slot n; receiving, by the terminal device, a basic value T for a bidirectional delay and a dynamic adjustment value K for the bidirectional delay which are sent by the network device, the dynamic adjustment value K for the bidirectional delay being determined based on the basic value T for the bidirectional delay and a real-time distance between the terminal device and the network device; and determining a slot for sending a second signal to the network device according to the slot n, the basic value T for the bidirectional delay and the dynamic adjustment value K for the bidirectional delay, wherein the second signal is a response signal for the first signal.

A user equipment (UE) executes a time synchronization method. The UE obtains reference time information (RTI) of a first grant master clock domain and transmits the RTI of the first grant master clock domain to a first base station of a second grant master clock domain to allow the first base station to synchronize with the first grant master clock domain.

Disclosed herein, among other things, are methods and apparatus for providing a time-stamp based controller for synchronization of sink or source sampling rate with external packet rate. A method for wireless communications includes receiving a transmission of a packet using a wireless transceiver of an electronic device, and using a processor of the electronic device to read a first value of a system timer and store the first value as an arrival time-stamp. The packet is decoded and processed by the processor, and sent to an output. When the processed packet is sent, a second value of the system timer is read, adjusted and stored as a departure time-stamp. The arrival time-stamp and the departure time-stamp are used to calculate an adjustment stimulus for a sample rate actuator of the electronic device. The sample rate actuator is configured to maintain synchronization of sampling rate with an external packet rate.

Provided are a method and device for determining a reference timing, a storage medium and an electronic device. The method comprises: a second node determining a reference timing of the second node by using at least one of the following modes: an open-loop mode, a closed-loop mode and an external synchronization source mode. By means of the present disclosure, the problem in the related art that there is no technical solution for setting a reference timing between each-hop links yet exists is solved.