A transmission timing information sending method, a transmission timing information receiving method, and an apparatus are provided. The method includes: configuring, by a base station, higher layer signaling, where the higher layer signaling includes at least one transmission timing set used to indicate a transmission timing value, and each of the at least one transmission timing set includes at least one transmission timing value; sending, by the base station, the higher layer signaling to a terminal; determining, by the base station, downlink control information (DCI), where the DCI is used to instruct the terminal to determine a transmission timing value in the at least one transmission timing set, and the determined transmission timing value is a slot that the terminal is instructed to use when sending feedback information; and sending, by the base station, the DCI to the terminal.

Transmitting a data frame from a source device to a target device, wherein the source device and the target device use a protocol defining a request command frame for polling for pending data, involving obtaining data to be transmitted to the target device in the source device, generating a request command frame for polling data pending for the source device at the target device, allocating the data to be transmitted in the request command frame, and transmitting the request command frame with the allocated data to be transmitted to the target device.

A system, method, and apparatus is provided for performing testing using arrival of angles (AOA). The system, method, and apparatus can receive a first test signal from a first cell; receive a second test signal from a second cell; and perform a test based on AOA of the first test signal and the second test signal. At least one of the first test signal and the second test signal can include a channel state information-reference signal (CSI-RS) signal or a synchronization signal block (SSB) signal. The first test signal can include a different number of SSBs transmitted during an Measurement Timing Configuration (MTC) window when compared to the second test signal. The system, method, and apparatus can receive the first test signal and the second test signal in a time division multiple access (TDMA) manner. The first cell can include a serving cell and the second cell can include a neighboring cell of the serving cell. The system, method, and apparatus can receive the first test signal using a main lobe of an antenna and the second test signal using a side lobe of the antenna.

Aspects of the subject disclosure may include, for example, receiving, via a fiber, first data from a first user equipment using a first secondary subcarrier included in a first plurality of secondary subcarriers, the first plurality of secondary subcarriers being included as part of a first primary subcarrier, and transmitting, via the fiber, second data to a second user equipment using a second secondary subcarrier included in a second plurality of secondary subcarriers, the second plurality of secondary subcarriers being included as part of a second primary subcarrier that is different from the first primary subcarrier. Other embodiments are disclosed.

Disclosed is a method for synchronizing transmission of signals from antenna reference points, ARP, (121, 122) of a wireless communication network (100). The method comprises initiating transmission of a first synchronization reference signal from a first ARP (121) at a first time point, instructing a second ARP (122) to determine a second time point for reception of the first synchronization reference signal, initiating transmission of a second synchronization reference signal from the second ARP (122) at a third time point, and instructing the first ARP to determine a fourth time point for reception of the second synchronization reference signal. The first and the second synchronization references signals are either transmitted in uplink communication resources available or they are transmitted in downlink communication resources. The method further comprises initiating transmission of data from the first ARP (121) to wireless devices (130) at a time point determined based on the first, second, third and fourth time points.

Communication system, used in a drone system, based on a communication system of the TDMA type in which the time is divided into a plurality of temporal breakdown hierarchy levels. All the hierarchy levels being suitable for complying with a plurality of constraints related to the drone system comprising a first constraint meaning that each communication between a drone and a station controlling the drone system must be compatible with a conversation audio data transmission, a second constraint meaning that the control station must be capable of controlling a predefined number of drones simultaneously and a third constraint meaning that, the drone system using transmissions by bursts, each burst must be transmitted over a stationary channel.

Techniques are disclosed relating to handling preemptive data services in cellular wireless transmissions. In some embodiments, a device wirelessly transmits uplink data for a first data service during a time dimension duplex (TDD) scheduled transmission interval using a first frequency band. While transmitting, in these embodiments, the device also monitors a downlink control channel that uses a second frequency band that does not overlap with the first frequency band. The downlink control channel may be dedicated for preemption indicators that indicate another service is preempting scheduled resources. In response to detecting an indicator in the downlink control channel of communications for a second data service in the first frequency band during the scheduled transmission interval, the device may reduce the transmission of the uplink data on resources used for the communications for the second data service (e.g., by blanking or transmitting at a lower power).

An antenna port configuration method and apparatus are provided. The method includes: obtaining, by an access network device, M reference signal received power RSRP differences, where the M RSRP differences indicate radio signal strengths of N radio remote units RRUs, and both M and N are positive integers greater than 1; determining, by the access network device based on the M RSRP differences, an order of traversing the N RRUs; and for any RRU of the N RRUs, configuring, by the access network device, same antenna ports for two RRUs in the traversal order that are adjacent to the RRU, and configuring different antenna ports for the RRU and the RRUs adjacent to the RRU.

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.

A method, base station, and terminal for dynamic uplink configuration in a wireless communication system, the method including: determining reconfiguration information including a reconfiguration point of time, to employ first uplink and downlink subframe configuration in the first configuration period before the reconfiguration point of time, and to employ second uplink and downlink subframe configuration in a second configuration period after the reconfiguration point of time; and in the last transmission period before the reconfiguration point of time, employing an uplink scheduling timing sequence of a reference uplink and downlink subframe configuration according to an uplink data timing sequence, the reference uplink and downlink subframe configuration including the second uplink and downlink subframe configuration. The method, base station, and terminal efficiently achieve at least one of: ensuring resource utilization, addressing timing sequence conflicts, coordinating processes, ensuring user throughput, or reducing transmission delay during TDD uplink and downlink reconfiguration.