The embodiments herein relate to timing advance offset for uplink/downlink switching in New Radio (NR). In one embodiment, there proposes a method in a wireless communication device, comprising: determining a timing advance (TA) offset for uplink/downlink switching, wherein the TA offset is at least based on the time offset requirement for uplink/downlink switching in different scenarios used in communication between the wireless communication device and a network node; applying the determined TA offset in the uplink communication from the wireless communication device to the network node. With embodiments herein, uplink/downlink switching time for NR is defined.

A system and method are disclosed for providing single-hop communication sessions in a satellite network. A timing offset is selected based on a system timing reference, and used to establishing a common timing reference. A synchronization signal is transmitted from a gateway to a satellite based on time slots aligned with the common timing reference, and subsequently forwarded from the satellite to all terminals managed by the gateway. Communication sessions are initiated by terminals using the common timing reference, and downlink transmissions from the satellite to the terminals are aligned with the synchronization signal.

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.

Proposed are a method and an apparatus for transmitting a signal by performing MIMO beamforming in a wireless LAN system. Specifically, a first STA performs MIMO beamforming during a second STA and TDD-based SP. The first STA transmits a signal to the second STA on the basis of a result of the MIMO beamforming. The SP includes a plurality of TDD slots. The MIMO beamforming includes a first sub-step and a second sub-step. In the first sub-step, after receiving a first MIMO beamforming setup frame from the second STA, the first STA transmits a second MIMO beamforming setup frame in the first allocated TDD slot among the TDD slots allocated to the first STA. In the second sub-step, after receiving a first MIMO beamforming feedback frame from the second STA, the first STA transmits a second MIMO beamforming feedback frame in a first allocated TDD slot among the TDD slots allocated to the first STA.

A method, and software application, are disclosed for managing data communication transmissions among a plurality of wireless communication nodes that are configured to communicate using a time division multiple access (TDMA) network that is based upon a TDMA frame including a plurality of timeslots. The method is individually performed by each of the nodes, and comprises the steps of: a) obtaining a plurality of K Channel Assignment Functions (CAFs), wherein: 1) K is an integer greater than or equal to 2, and J is an integer ranging from 0 to K-1, and 2) the J-th CAF from the plurality of K CAFs is in a one-to-one correspondence with a J-th channel set, and a J-th Maximum Transmission Interference Range Function (MTIRF), wherein 2a) the J-th CAF assigns one channel from the J-th channel set to an input set of spatial coordinates (SOSC) identifying an input geographic location, and 2b) the J-th MTIRF assigns a J-th Maximum Transmission Interference Range (MTIR) value to the input SOSC; b) obtaining a set of network topology metrics (NTMs), wherein each of the NTMs is associated with at least one threshold; c) obtaining one or more measurements for each of the NTMs; d) obtaining a current SOSC identifying the current geographic location of the node performing the method; e) selecting a CAF based, at least in part, on 1) the current SOSC, 2) the one or more measurements for each of the NTMs, and 3) the at least one threshold associated with each of the NTMs; f) selecting a channel from a list of channels comprising the channel assigned to the current SOSC by the selected CAF; g) calculating a transmission power level (TPL) based, at least in part, on the MTIR value assigned to the current SOSC by the MTIRF corresponding to the selected CAF; and, h) transmitting data using the selected channel and the calculated TPL.

A method and apparatus of a user equipment (UE) for transmitting and receiving data in a wireless communication system. The UE receives first time division duplex (TDD) uplink-downlink configuration information for a first cell and second TDD uplink-downlink configuration information for a second cell, determines whether a subframe in the first cell is a special subframe and the subframe in the second cell is a downlink subframe according to the first and second TDD uplink-downlink configuration information, and determine, if the subframe in the first cell is the special subframe and the subframe in the second cell is the downlink subframe, not to receive a signal on the second cell in orthogonal frequency division multiplexing (OFDM) symbols that overlaps with at least one of a guard period (GP) or uplink pilot time slot in the first cell.

A user equipment (UE) is configured to receive control information indicating resources in a frame to receive a downlink physical control channel in a plurality of time slots. Further, the UE is configured to receive a plurality of power control commands for a plurality of UEs in a first of the plurality of time slots in a first downlink physical control channel. A number of bits carried by the first physical control channel is based on a number of the plurality of UEs, wherein the first of the plurality of time slots has a second downlink physical control channel and a downlink physical shared channel. The UE is configured to transmit an uplink physical channel having a power level based on the received power control command for the UE. The UE is configured to receive in a third of the plurality of time slots a third downlink physical control channel.

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.

A method, apparatus, and a non-transitory computer-readable storage medium for receiving an analog signal are provided. The method may include determining a first automatic gain factor of a control channel in one time slot. The method may further include receiving, according to said first automatic gain factor, a first analog signal of a control channel sent by a same user equipment in one time slot. The method may further include determining a second automatic gain factor of a traffic channel in one time slot. The control channel and the traffic channel are time-division multiplexed. The method may further include receiving, according to the second automatic gain factor, a second analog signal of the traffic channel sent by the same user equipment in one time slot.

Techniques are disclosed relating to handling preemptive data services in cellular wireless transmissions. In some embodiments, a device receives a first downlink control information (DCI) message on resources in a first frequency band, where the first DCI message indicates resources for a physical uplink shared channel (PUSCH) transmission. In some embodiments, the device monitors a downlink control channel on a second frequency band, disjoint from the first frequency band. In some embodiments, subsequent to reception of the first DCI message, the detects an indicator in the downlink control channel and reduces the PUSCH transmission in response to the detection.