Abstract: An apparatus, which comprises at least one antenna array comprising a plurality of array elements having cross-polarized coupled branches, is configured to adjust at least its uplink beam steering direction by measuring (301), while transmitting a combined uplink signal via the plurality of the an-ay elements as individual signals forming the combined uplink signal, per an array element, first signal on an unused branch of the array element, and using the first signal and reference information in the memory to adjust if needed, at least one beam steering setting.

Abstract: Disclosed is a method comprising selecting a reference point associated with a position of a terminal device (302), determining a timing offset associated with one or more first antenna panels (304), wherein the timing offset is determined based at least partly on the reference point, and applying the timing offset to the one or more first antenna panels (305).

Abstract: An apparatus configured to enable different modes of concurrent radio transmission and radio reception, in the same time-frequency channel, using multiple antennas, the apparatus comprising means for a) selecting concurrent transmission and reception on different ones of the multiple antennas, b) selecting concurrent transmission and reception at overlapping frequencies or at non-overlapping frequencies, c) selecting one of non-diversity reception, diversity reception, or multiple-input multiple-output (MIMO) reception.

Abstract: Systems, methods, apparatuses, and computer program products for transmitter residual carrier frequency offset compensation. The method may include receiving, at a reference user equipment, configuration for a positioning reference measurement from a network element. The method may also include estimating a transmission carrier frequency offset of the network element based on the positioning reference measurements. The method may further include transmitting the estimated transmission carrier frequency offset in a report to the network element.

Abstract: Abstract: Disclosed is a method comprising increasing an antenna isolation between a first antenna panel and a second antenna panel by adjusting a radiation pattern associated with the first antenna panel and/or with the second antenna panel (1501). A first signal is then received via the first antenna panel and a second signal is transmitted via the second antenna panel substantially simultaneously (1502).

Abstract: Example embodiments relate to an apparatus, method and computer program for timing compensation, for example timing compensation in relation to timing information provided by one or more positioning reference units (PRUs). An example method may involve providing data representing a timing error associated with a first position reference unit located at a first known position, with respect to a second position reference unit located at a second known position. The method may also comprise modifying timing information received from the first position reference unit, the modifying being based on at least the first timing error.

Abstract: According to an aspect, there is provided a radio frequency front end (202) for a beamforming transceiver (201) having an antenna array comprising a plurality of antenna elements. The radio frequency front end comprises, for each antenna element, at least two radio frequency beamforming branches (218, 219). Each of at least one of said at least two radio frequency beamforming branches comprises an electrically tunable phase shifting element (221, 231), first and second transmission/reception switches (223, 233), a low-noise amplifier (225, 235) for reception and a power amplifier (224, 234) for transmission. Moreover, each of at least one of said at least two radio frequency beamforming branches comprises an electrically switchable matching circuit (226, 236). The electrically switchable matching circuit comprises two or more matching circuit settings selectable via switching.

Abstract: An apparatus, method and computer program is described comprising: determining an angular radiation space of interest for communications between a user device and a network node of a mobile communication system; obtaining a positioning metric for each of a plurality of available antenna configurations for communication between the user device and the network node in the angular radiation space of interest, wherein said positioning metrics are based, at least in part, on average antenna phase center offset vector data and phase center offset variance data for the user device; and selecting one of said plurality of antenna configurations, based on the obtained positioning metrics, for sending positioning signals from the user device to the network node or for receiving positioning signals at the user device from the network node.

Abstract: An access node, method and computer program product for: receiving from a terminal device served by a first access node measurement data relating to a plurality of radio beams, determining that the measurement data comprises data relating to at least one radio beam provided by at least one second access node, receiving information relating to angular coverage of the at least one radio beam provided by at least the second access node, determining, based on the angular coverage and the measurement data relating to the plurality of radio beams, an estimated location of the terminal device, and selecting a set of radio beams for provision to the estimated location of the terminal device, wherein the set of radio beams comprises a subset of radio beams provided by the first access node for serving the terminal device.

Abstract: Disclosed is a method comprising transmitting or receiving, by a first terminal device (100), a first signal via a first antenna (1901), said first signal transmitted to or received from a second terminal device (102), and then switching, by the first terminal device, a polarization of the first antenna (1902), and then transmitting or receiving, by the first terminal device, a second signal via the first antenna (1903), said second signal transmitted to or received from the second terminal device.

Abstract: A method including receiving a first reference signal, wherein the first reference signal is having a first bandwidth in a first frequency range, determining an angle of arrival of a line of sight component of the first reference signal, receiving a second reference signal, wherein the second reference signal is having a second bandwidth in a second frequency range, wherein the second bandwidth is greater than the first bandwidth, determining a time of arrival of a line of sight component of the second reference signal, based on the first reference signal and on the second reference signal, determining a link quality measure, and based on the link quality measure, the time of arrival and the angle of arrival, performing a position estimation to obtain an estimated position, wherein the first reference signal and the second reference signal are received from a same transmit-receive point.

Abstract: To increase positioning accuracy, channel characteristics are determined taking into account receive filter response and transmit filter response. For example, upon receiving assistance data for positioning an apparatus, a transmit sequence is generated using the assistance data; and a combination of the transmit sequence is generated by combining the transmit sequence. Further, a receive filter response is determined, a transmit filter response is obtained, and a combined filter response is generated using the receive filter response and the transmit filter response. Reference signals received over a channel are measured by sampling them into a plurality of time-domain samples, and the channel is estimated from the plurality of time-domain samples using the combined filter response and the combination of the transmit sequence. Then, per channel characteristics, a value of the channel characteristics based on the channel estimated is determined.

Abstract: A network element estimates a position of a user equipment served by a first network and a second network. At the network element, at least one memory and computer program code are configured to, with at least one processor, cause the network element to: determine first position measurement information for the user equipment in the first network; obtain position assistance data associated with the second network, the position assistance data including at least second position measurement information for the user equipment in the second network; obtain frequency offset information and time offset information for transmissions in the first network and transmissions in the second network; and estimate a position of the user equipment based on the first position measurement information, the second position measurement information, the frequency offset information and the time offset information.

Abstract: A method for a user equipment includes determining full duplex capability and metric thresholds during cell search or attachment to a base station and reporting these to the base station; when in an RRC-connected state, dynamically sending reports of the metric conditions to the base station; and receiving instructions, based on the reports of the metric conditions, to communicate with the base station in one of a full duplex mode and a time division duplex mode. A method for a base station includes receiving a full duplex capability and metric thresholds from a user equipment; when in an RRC-connected state, initially scheduling the user equipment for communications in a time division duplex mode; receiving reports of metric conditions dynamically from the user equipment; and sending instructions, based on the reports, to the user equipment to communicate in one of a full duplex mode and a time division duplex mode.

Abstract: An apparatus comprising at least one processor; and at least one memory including computer program code; the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform: determining, for a terminal node, at least one time delay value for a plurality of access nodes; determining at least one metric for the access nodes, the at least one metric indicative of probability of line of sight conditions between the terminal node and the access nodes; determining, based, at least in part, on the at least one metric, a first set of line of sight time delay values having an associated probability of line of sight conditions above a threshold; determining, based, at least in part, on the at least one metric, a second set of time delay values having an associated probability of line of sight conditions below the threshold; determining a position estimate of the terminal node based, at least in part, on the first set of line of sight time delay values; de

Abstract: A terminal device including circuitry configured to perform: measuring, for each candidate positioning beam pair of a first subset of candidate positioning beam pairs, at least one respective positioning reference signal metric, wherein each candidate positioning beam pair represents a combination of a respective receive beam of the terminal device and a respective transmit beam of a respective network node of one or more network nodes; estimating, for each candidate positioning beam pair of a second subset of candidate positioning beam pairs, at least one respective positioning reference signal metric at least partially based on the measured positioning reference signal metrics; selecting one or more candidate positioning beam pairs as positioning beam pairs for downlink positioning.

Abstract: A system comprising a first access node that provides a first beacon and a second access node that provides a second beacon, the system further comprising a terminal device that performs, in parallel or semi-parallel, a first beam sweep and a second beam sweep, wherein the first beam sweep is performed by a first antenna panel and the second beam sweep is performed by a second antenna panel the terminal device obtains results from the first and the second beam sweep, wherein the results comprise at least a power measurement, and, based on the results, the terminal device identifies one of the first or the second access node and initiates a connection to the identified first or the second access node.

Abstract: An apparatus comprising: radio frequency paths for antenna elements of an array of antenna elements; and means for: determining which of a first group of radio frequency paths are transmission radio frequency paths to be used for transmission and which of a second group of radio frequency paths are reception radio frequency paths to be used for reception; and controlling when to use the determined transmission radio frequency paths for transmission and the determined reception radio frequency paths for reception.

Abstract: According to an example aspect of the present invention, there is provided a method comprising, determining, by a network node, a timing offset (TOA) of a first wireless link, determining, by the network node, a timing offset (TOB) of a second wireless link, determining, by the network node, a timing offset (TOC) of a third wireless link, calculating, by the network node, a timing calibration value of the first sidelink device using the timing offset (TOA) of the first wireless link, the timing offset (TOB) of the second wireless link and the timing offset (TOC) of the third wireless link and transmitting, by the network node, at least the timing calibration value of the first sidelink device.

Abstract: An apparatus including multiple antennas and means for converting measurements of time of arrival of a positioning reference signal at the multiple antennas to a compensation value and using the compensation value to produce a compensated time of arrival measurement for the positioning reference signal. The apparatus also includes means for providing compensated time of arrival measurements for a plurality of positioning reference signals from different reference points to enable positioning of the apparatus.