A system for providing temporary, transportable cellular communications networks is disclosed. The system includes at least one mobile base station and a control system. The mobile base station can include an aerial vehicular base station with a frame and propellers mounted on the frame that enable flight of the aerial vehicular base station while the control system is configured to control the flight path and functioning of the aerial vehicular base station. The aerial vehicular base station includes hardware and software components for providing cellular network coverage for short ranges. The control system determines the safe flight path for the aerial vehicular base station to reach a service location to provide cellular network coverage. The aerial vehicular base station identifies the closest base stations and available spectrum at the service location to provide communication services for the user equipment at the service location.

Systems and methods for establishing an ad-hoc collaboration between unmanned aerial vehicles (UAVs) are provided. A method includes: configuring intent data of a first UAV using a controller of the first UAV; configuring a collaboration plan for the first UAV and a second UAV based on a determination of a shared intent between the first UAV and the second UAV; executing the collaboration plan by flying the first UAV and gathering data using the first UAV based on the collaboration plan; and sharing the gathered data with an operator of the second UAV.

A high-altitude platform (HAP) node provides communication service during an emergency. The HAP node uses a first network to provide communication services for handling calls initiated by at least one user equipment (UE). The HAP node detects that an emergency disruption has occurred that prevents the use of the first network. In response to detecting the occurrence of the emergency disruption, a mobile terminal (MT) in the HAP node searches for a second network able to accept emergency calls. The HAP node determines whether the second network will handle all calls initiated by the at least one UE or only emergency calls generated by the at least one UE. The HAP node handles the calls based on the determining and through the use of the second network.

An airborne RF-head platform system and method. Here, much of the computational burden of transmitting and receiving wireless RF waveforms is shifted from the airborne platform to a ground baseband unit (BBU). The airborne platform, which will often be a high altitude balloon or drone type platform, generally comprises one or more remote radio heads, configured with antennas, A/D and D/A converters, frequency converters, RF amplifiers, and the like. The airborne platform communicates with the ground baseband units either directly via a laser communications link, or indirectly through another airborne relay platform. The airborne RF-head communicates via various wireless protocols to various user equipment such as smartphones by using the BBU and the laser communications link to precisely control the function of the airborne A/D and D/A converters and antennas. This system reduces the power needs, weight, and cost of the airborne platform, and also improves operational flexibility.

Certain aspects of the present disclosure provide techniques and apparatus for random access channel communications in non-terrestrial networks. A method that may be performed by a user equipment (UE) includes transmitting a physical random access channel (PRACH) preamble to the network entity in a random access (RA) occasion; and monitoring for a random access response (RAR) within a RAR window with a start position determined based at least in part on the RA occasion, round trip time parameters for non-terrestrial network communications, and one or more timing offset parameters.

A method for managing connections between an Unmanned Aerial Vehicle (UAV) and one or more associated UAV devices is described. The method includes determining, by a radio control management service, that one or more associated UAV devices are attached to a wireless network; determining, by the radio control management service, that one or more UAVs are attached to the wireless network; and routing, by the radio control management service in response to determining that the one or more associated UAV devices and one or more UAVs are attached to the network, at least one of (1) communications from at least one of the one or more UAVs to at least one of the one or more associated UAV devices and (2) communications from at least one of the one or more associated UAV devices to at least one of the one or more UAVs.

A method and device for transmitting and receiving signals with a terrestrial station by using a radio frame including five subframes each of which includes a plurality of slots used for the uplink signal and/or the downlink signal are provided.

Embodiments include methods for operating a network node in a non-terrestrial network (NTN) that utilizes one or more polarization modes for serving one or more cells. Such methods include transmitting, to one or more user equipment (UEs), an indication of at least one polarization mode configured for use in a first cell of the first NTN. The at least one polarization mode can be indicated in various ways, both explicitly and implicitly. Such methods also include transmitting and/or receiving one or more signals or channels in the first cell according to one or more configured polarization modes including the at least one indicated polarization mode. Other embodiments include complementary methods for operating UEs, as well as network nodes and UEs configured to perform such methods.

Systems and methods related to operating a mobile platform using mesh networks are disclosed. In one embodiment, a control station may have a user interface that displays nodes participating in a mesh network. The control station may provide the positions of the nodes using position information broadcasted from the nodes and received by the control station. A user may select a node in the user interface and enter a command to have a mobile platform interact with the node. The control station may send the command to the mobile platform and cause the mobile platform to establish a wireless connection to the node, subscribe to position information corresponding to the node and received from the node by the wireless connection, and operate the mobile platform in response to the position information of the selected node, such as by following the node, image tracking the node, or landing near the node.

The present disclosure relates to a user equipment (UE) that comprises a receiver of the UE receives, from a source base station of a source radio cell, a common timing advance value for a target radio cell. The UE is connected to the source radio cell and is involved in a handover procedure to hand over the UE from the source radio cell to the target radio cell. Further, the common timing advance value is received from the source base station in a first message of the handover procedure, which also comprises a timing indication for transmitting a second message from the UE to the target base station. Then, a processor of the UE determines a first uplink timing of uplink transmissions to the target base station with respect to downlink transmissions from the target base station, based on the received common timing advance value and the timing indication. A transmitter of the UE transmits a second message of the handover procedure to the target base station based on the determined uplink timing. The processor determines a UE-specific timing advance value, specific to the UE and the target radio cell, to be used by the UE for performing uplink transmissions in the target radio cell.