Systems, and method and computer readable media that store instructions for slowing or stopping a progress, towards a target, of a drone controlled by a remote control unit.

Provided in the implementations of the present disclosure are a wireless communication method and communication device. The method includes: determining a second time unit according to a time domain position of at least one first time unit in a plurality of first time units used for transmitting data; and transmitting feedback information by using the second time unit, wherein the feedback information is feedback information aiming at the data transmitted on the plurality of first time units.

Provided is a reception device and a communication system. The reception device includes a compensation circuit connected to a transmission line that is connected to each of a plurality of transmission devices. The compensation circuit compensates a plurality of data signals received from the plurality of transmission devices, respectively, in time division. The reception device further includes an adjustment circuit that adjusts operation of the compensation circuit based on a plurality of training signals received from the plurality of transmission devices.

Aspects of the present disclosure provide a time division duplex (TDD) subframe structure that supports both single and multiple interlace modes of operation. In a single interlace mode, control information, data information corresponding to the control information and acknowledgement information corresponding to the data information are included in a single subframe. In a multiple interlace mode, at least one of the control information, the data information corresponding to the control information or the acknowledgement information corresponding to the data information is included in a different subframe. Both single and multiple interlace modes can be multiplexed together within the TDD subframe structure.

A wireless transmit/receive unit (WTRU) and a method for use by the WTRU for transmitting a radio resource control (RRC) message to a first base station, the RRC message including WTRU capability information, receiving and processing configuration information from a second base station, the configuration information being received after the second base station has received a WTRU information transfer message from a network controller, the WTRU information transfer message including uplink physical channel support information, frequency division duplex (FDD) and time division duplex (TDD) parameters including TDD specific parameters, hybrid automatic repeat request (HARQ) information, supported modulation scheme information, and shared channel information, and sending transmissions to the second base station in accordance with the received configuration information.

A radio frequency (RF) module including a module substrate; a filter with a passband including communication band for TDD; a switch connected to the filter; a power amplifier that is arranged on a first surface of the module substrate and connected to the filter via the switch; a low-noise amplifier that is arranged on a second surface of the module substrate and connected to the filter via the switch; a filter with a passband including communication band; a low-noise amplifier that is arranged on the second surface and connected to the filter; and a conductive member arranged between the low-noise amplifiers on the second surface.

A method for determining time information is disclosed. The method includes: obtaining, by a network node, information sent by a terminal device; and determining, by the network node, at least one of the following based on the information: a first time interval between downlink scheduling and downlink data transmission, a second time interval between the downlink data transmission and a feedback message sent by the terminal device after the terminal device receives downlink data, and a third time interval between uplink scheduling and uplink data transmission, where the information may include at least one of a subcarrier spacing, an operating band, and a bandwidth that are supported by the terminal device, and further include a first smallest value and/or a second smallest value and/or a third smallest value corresponding to the at least one item. Therefore, flexibility and accuracy of determining the time information are improved.

An information indication apparatus and method and a communication system. The information indication method includes: transmitting a plurality of physical broadcast channels and a plurality of synchronization signals at a plurality of time units or a plurality of time instances within a time interval; wherein, each of the physical broadcast channels carries timing information of the time interval. Hence, even a plurality of physical broadcast channels and a plurality of synchronization signals are transmitted at a plurality of time units or a plurality of time instances within a time interval, the timing information of the time interval may be obtained with a simple structure and operation.

An information indication apparatus and method and a communication system. The information indication method includes: transmitting a plurality of physical broadcast channels and a plurality of synchronization signals at a plurality of time units or a plurality of time instances within a time interval; wherein, each of the physical broadcast channels carries timing information of the time interval. Hence, even a plurality of physical broadcast channels and a plurality of synchronization signals are transmitted at a plurality of time units or a plurality of time instances within a time interval, the timing information of the time interval may be obtained with a simple structure and operation.

Methods of combining semi-persistent resource allocation and dynamic resource allocation are provided. Packets, such as VoIP packets, are transmitted on the uplink and downlink using respective semi-persistent resources. For each mobile device, awake periods and sleep periods are defined. The semi-persistent resources are aligned with the awake periods so that most of the time the mobile device can turn off its wireless access radio during the sleep periods. In addition, signalling to request, and to allocate, resources for additional packets are transmitted during the awake periods, and the resources allocated for the additional packets are within the awake windows.