A method performed by a network node comprising an active antenna system in a telecommunication network. The network node can identify a plurality of available branches from a plurality of branches of the active antenna system for supporting a narrowband signal. The network node can further map at least two available branches from the plurality of available branches to at least one subcarrier of a plurality of subcarriers from the narrowband signal, wherein each of the at least two available branches are mapped to different sets of subcarriers from the plurality of subcarriers.

Systems and methods are disclosed herein that relate to an enhanced guard period between Sounding Reference Signal (SRS) resources. In one embodiment, a method performed by a wireless communication device comprises receiving a SRS configuration from a radio access node, wherein the SRS configuration defines SRS resources in compliance with a predefined or preconfigured minimum guard period between adjacent SRS resources in different slots. The method further comprises transmitting SRSs in accordance with the SRS configuration. In this manner, improved SRS guard period specification is provided, which leads to a better trade-off between SRS signal quality and SRS resource utilization.

Provided are an uplink control receiving method and device, an uplink control sending method and device, a base station, and a user equipment. The method includes: configuring or specifying, for the receiving end, an orthogonal frequency division multiplexing (OFDM) symbol for transmitting the uplink control in a transmission unit, the location of the OFDM symbol in which the uplink control is located in the transmission unit and the location of an OFDM symbol in which uplink data is located in the transmission unit remaining continuous; and receiving the uplink control in the configured or specified OFDM symbol.

An apparatus comprising includes first and second radio frequency circuitry configured for operation at least in one or more first and second radio frequency bands, respectively; and first and second antenna arrangements configured for operation in the one or more first and second radio frequency bands, respectively. The apparatus also includes first and second radio frequency coupling for transferring of a signal between the first and second antenna arrangements, respectively, and the first and second radio frequency circuitry, respectively. The apparatus further includes a controller for assessing whether a signal can be transferred between the second antenna arrangement and the first radio frequency circuitry and, in dependence upon the assessment, for transferring the signal therebetween, via a frequency converter configured to enable, for the signal, frequency conversion between the one or more second radio frequency bands and the one or more first radio frequency bands.

Aspects and embodiments relate to an apparatus and method for performing antenna panel management. There is provided an apparatus comprising: means for obtaining signal reception information related to at least one downlink signal received by a user equipment using at least one reception antenna panel of a plurality of selectively-activatable antenna panels; means for determining an indication of effective power radiatable to the network node from which the downlink signal is received, based on the signal reception information related to the at least one downlink signal received by that to antenna panel for each of the plurality of selectively-activatable antenna panels which is configurable to transmit a signal to a network node from which the downlink signal is received; means for calculating an indication of power consumption associated with the indication of effective power radiatable to the network node for each of the plurality of selectively-activatable antenna panels; and means for selecting and configuring at least one of the selectively-activatable antenna panels to be used for transmission of a signal to a network node from which the downlink signal is received in response to the calculated indication of power consumption. Aspects support appropriate power efficient operation of a communication apparatus, for example by allowing for differentiated uplink and downlink antenna panel selection, which can enable apparatus power saving, whilst minimising performance loss, or incurring no significant performance loss.

Methods related to radio frequency front end systems. In some embodiments, the method can include providing a first module configured to provide multi-input multi-output (MIMO) receive operations for a first plurality of mid bands and a first plurality of high bands. The first module can be further configured to provide transmit operations for the plurality of mid bands. The first module can include a first node. The method can include providing a second module configured to provide transmit and receive operations for a second plurality of mid bands and a second plurality of high bands. The second module can be a power amplifier integrated duplexer (PAiD) module. The second module can include a second node. The first module and the second module can be coupled by a signal path at the first node and the second node, respectively.

In accordance with a first aspect of the present disclosure, a communication device is provided, comprising: an ultra-wideband (UWB) communication unit configured to set up a UWB communication channel with a first external communication device; a further communication unit configured to set up a further communication channel with a second external communication device; an antenna configured to be selectively used by the UWB communication unit and the further communication unit; wherein the UWB communication unit is operatively coupled to the further communication unit, and wherein the further communication unit is configured to grant the UWB communication unit access to said antenna in response to receiving a request from the UWB communication unit. This aspect represents a solution to the problem of how to facilitate avoiding that UWB ranging rounds fail in a co-existence system.

An apparatus includes antenna, selector, estimator, imager and creator. The antenna includes antenna elements of N rows by N columns (N is a natural number of 2 or more) arranged in an array and captures an incoming wave. The selector selects an antenna element group including antenna elements of M rows by M columns (M is a natural number less than N) from the antenna elements of N rows by N columns according to a band of the incoming wave. The estimator estimates an incoming direction of the incoming wave from an element signal of each of the antenna elements included in the selected antenna element group. The imager acquires image data by imaging an orientation direction of an aperture of the antenna. The creator creates a visualized image by visually synthesizing the estimated incoming direction with the image data.

Described herein are unmanned aerial vehicles (UAVs) and systems and methods for dynamically selecting directional antennas onboard the UAV for wireless transmissions. For example, an embodiment pertains to a UAV that comprises a flight control system in remote communication with a remote receiver via directional antennas onboard the UAV. The flight control system is operatively coupled with a propulsion system to control the flight of the UAV. While in-flight, the flight control system is configured to determine an orientation and position of the UAV. It is further configured to select a subset of directional antennas to transmit from based on the determined orientation and position, among other factors. The flight control system then directs a transmitter to send wireless communications using the selected directional antennas.

A method and a wireless communication device for managing activation of radar modules in the device are disclosed herein. The device comprises a plurality of wireless communication modules, a plurality of radar modules, and a processor. The wireless communication modules comprise one or more antennas that are configured to transmit and receive wireless communication signals, and the radar modules comprise one or more antennas that are configured to transmit and receive radar signals. The processor is configured to determine which of the wireless communication modules are active, obtain spatial information comprising spatial positions within the device of the wireless communication modules and the radar modules, determine one or more transmission characteristics of the active wireless communication modules and the radar modules, determine a set of the plurality of radar modules to activate based on the spatial information and the transmission characteristics, and activate the determined set of radar modules.