Abstract: Examples provide a method of operating a first communication node (CN), wherein the first CN is configured for controlling a re-configurable relaying device (RRD), the RRD being re-configurable to provide spatial polarization filtering, the spatial polarization filtering being associated with an input spatial direction from which incident signals on a radio channel are accepted and with an output spatial direction into which the incident signals are transmitted by the RRD with configurable output polarizations set by the spatial polarization filtering, the method comprising providing, to the RRD, a control message indicative of predefined measurement spatial polarization filters; providing, to a second CN, a message requesting the second CN to transmit first reference signals associated with the predefined measurement spatial polarization filters, and receiving, on the radio channel from the second CN, first reference signals associated with the predefined measurement spatial polarization filters indicated by

Abstract: A base station, a user equipment and methods are provided for establishing access in a base station for a user equipment and for performing measurement in a user equipment in a radio communication system. The method includes transmitting a plurality of synchronization signal blocks at different frequencies within a wideband carrier from the base station, wherein each synchronization signal block is associated with each one cell supported by the base station. An indication is received in the base station, that a user equipment supports wideband operation. A first cell signal is transmitted from the base station to the user equipment, which first cell signal provides information identifying the cells available within the wideband carrier.

Abstract: The present invention relates to a method for operating a base station (10) of a wireless communication network. Precoding information for concentrating a radio-frequency power of a transmitted radio-frequency signal to a group of terminal devices (41 to 43) arranged in a sub area (37) of a coverage area (30) of the base station (10) is determined and applied to an antenna array (11) of the base station (10). A synchronization signal is transmitted from the base station (10) to the group of terminal devices (41 to 43) using the precoding information.

Abstract: The present disclosure provides a method, performed at a network node, for beam control signalling. The network node is configured to communicate with a wireless device comprising one or more physical antenna panels. Each physical antenna panel is configured to communicate with the network node using one or more panels. The method comprises receiving, from the wireless device, control signalling indicative of an association of the one or more panels with one or more corresponding physical antenna panels. The method comprises selecting, based on the association, one or more beams to be used by the wireless device in communication with the network node.

Abstract: Disclosed is a method, performed at a network node, for transmitting a burst of Synchronization Signal Blocks according to this disclosure. The burst of SSBs comprises a first SSB and a second SSB. The network node is configured to communicate with a wireless device using a plurality of beams in a frequency band requiring clear channel assessment, CCA. The method comprises monitoring, using a first beam, a channel between the network node and the wireless device as part of a first CCA. The method comprises determining a scheme for transmission of SSBs, amongst a plurality of schemes. The method comprises upon determining, based on the first CCA, that the channel is clear for the first beam, transmitting, using the first beam, the first SSB indicative of the determined scheme.

Abstract: The present application relates to methods for operating a wireless communication device (20). According to an embodiment, the method comprises transmitting, on a wireless link between the wireless communication device (20) and a further wireless communication device (30, 40, 50), at least one first signal (301) using a first polarization (501), transmitting, on the wireless link, at least one second signal (302) using a second polarization (502), and transmitting, on the wireless link, at least one third signal (303) using a third polarization (503). The first polarization (501), the second polarization (502), and the third polarization (503) are different from each other. Based on the at least one first signal (301), the at least one second signal (302), and the at least one third signal (303), channels of the wireless link associated with the at least one first signal (301), the at least one second signal (302), and the at least one third signal (303) are sounded.

Abstract: A method (20) performed by a wireless terminal (10) in a wireless communication network (10, 30) is provided. In the method (20), based on a (fundamental) polarization tracking capability of the wireless terminal (10), at least one downlink polarization of at least one downlink communication between the wireless terminal (10) and an access node (30) of the wireless communication network (10, 30) is determined (204). A reference polarization from the at least one downlink polarization is selected (207). Based on the reference polarization and a (momentary) polarization tracking ability of the wireless terminal (10), at least one uplink polarization of at least one uplink communication between the wireless terminal (10) and the access node (30) is configured (210). A corresponding method (40) performed by the access node (30) is also provided, as well as the mentioned wireless terminal (10) and the access node (30).

Abstract: A method is proposed for operating a re-configurable reflective device, RRD, the RRD being re-configurable to provide multiple spatial filters, each one of the multiple spatial filters being associated with a respective input spatial direction from which incident signals on a data radio channel are accepted and with a respective output spatial direction into which the incident signals are reflected by the RRD. The method comprises: receiving, by the RRD from a first communication node, CN1, on a positioning radio channel different from the data radio channel, a CN1 reference signal, determining, by the RRD, an estimated CN1 angle of arrival of the CN1 reference signal, and reconfiguring the RRD based on the estimated CN1 angle of arrival.

Abstract: A method is disclosed performed at a wireless device, for communicating with one or more wireless nodes using parallel data streams. The method comprises determining (S101), based on a first time of arrival of a first signal from a first wireless node and a second time of arrival of a second signal from a second wireless node, blanking required by the wireless device to ensure communication using the parallel data streams under current conditions. The method comprises transmitting (S103), to at least one of the first and second wireless nodes, signaling indicative of the determined required blanking.

Abstract: A transmitter node is disclosed for reducing Peak to Average Power Ratio, PAPR. The transmitter node comprises circuitry configured to cause the transmitter node to transmit, to a receiver node, data in OFDM symbols. For one OFDM symbol, a real part of a first data symbol transmitted on a first subcarrier and an imaginary part of a second data symbol transmitted on a second subcarrier, different from the first subcarrier, are reserved for transmission of a PAPR reducing signal. Resource locations of the first data symbol and of the second data symbol are determined based on preconfigured reservation rules.

Abstract: A method for operating a network node in a wireless communication network comprises determining whether a positioning process for positioning of a first communication device operated in the wireless communication network fulfils at least one predefined criterion; and, upon determining that the positioning process fulfils the at least one predefined criterion: triggering at least one second communication device operated in the wireless communication network and located within radio range of the first communication device to transmit a PRS associated with the positioning process, to thereby increase a positioning accuracy of the positioning of the first communication device provided by the positioning process.

Abstract: A method of operating a first node (91, 101) of a communications network (100), the method comprising: transmitting, to at least one second node (92, 102), at least one beam configuration (200, 4050) of a listen-before-talk procedure for accessing an open spectrum (481) by the at least one second node (92, 102).

Abstract: A system for reflecting an RF signal comprises a plurality of antenna units (2) configured to receive and passively reflect the RF signal, and a reference antenna (6?). Each antenna unit (2) comprises a respective phase shifter (8) operable to adjustably impose a phase change on the RF signal before reflection. The system may be a Large Intelligent Surface (LIS) and the antenna units may be included in an arrangement of separate panel devices. A control system (20) is configured to operate the respective phase shifter (8) to phase align a first analog antenna signal (ASn) with a first analog reference signal (REF), which are received by the respective antenna unit (2) and the reference antenna (6?), respectively, in response to a first RF signal; determine, for the respective phase shifter (8), a first phase setting resulting in phase alignment, and store the first phase setting.

Abstract: A wireless communication device (100, 100?) receives resource allocation information from a wireless communication network. The resource allocation information indicates at least one condition for utilization of a set of resources allocated to device-to-device communication. Depending on the at least one condition, the wireless communication device (100, 100?) controls utilization of the set of resources for device-to-device communication between the wireless communication device (100, 100?) and a further wireless communication device (100, 100?).

Abstract: The present application relates to a method for operating a device (30) of a wireless multiple-input and multiple-output (MIMO) system (10) providing wireless communication. An interfering signal interfering the wireless communication is detected (107) and a transmit beamforming parameter is determined (108) based on the detected interfering signal. A beamformed pilot signal using the transmit beamforming parameter is transmitted (111).

Abstract: Systems and methods for selecting a communication mode in a wireless network (10) include a communication mode selection procedure that may be carried out by the respective devices in an automated manner to identify a desired mode for communication between an electronic device (14) and a network node (12). Determining the desired mode for communication is based on the electronic device's (14) capabilities and/or the channel conditions of the communication channel between the electronic device (14) and the network node (12). The procedures described herein may allow for the high data rates associated with polarization based MIMO (P-MIMO) in capably equipped electronic devices (14) while preventing communication interruptions due to unfavorable channel conditions.

Abstract: A method of operating a first wireless communication device (101) communicating with a second wireless communication device (102) on a device-to-device link (114) in accordance with a pre-established beam pair is provided. The method includes communicating at least one message (4101-4103) indicative of an activation of at least one of a first transmission (181) of first reference signals (191) from the first wireless communication device (101) to the second wireless communication device (102), or a second transmission (182) of second reference signals (192) from the second wireless communication device (102) to the first wireless communication device (101). The activation of the at least one of the first transmission (181) or the second transmission (182) is for use in beam adjustment of the pre-established beam pair at the first wireless communication device (101).

Abstract: Disclosed is a method performed by a transmitter node of a communication system, for transmitting reference signalling. The method comprises transmitting, to one or more receiver nodes of the communication system, a reference signal sequence using a first antenna port and a carrier frequency. The method comprises transmitting, to the one or more receiver nodes, using another antenna port and the same carrier frequency, a delayed version of the reference signal sequence. The delay is non-zero and less than a symbol duration of the communication system.

Abstract: A method for operating an access node for transmission of radio signals in a plurality of beams of a beam sweep, includes: transmitting a first radio signal using a first polarization in a first beam having a first beam direction, and transmitting a second radio signal using a second polarization, which is different from the first polarization, in a second beam in said first beam direction, wherein the transmission of the first radio signal is linked to the transmission of the second radio signal in accordance with a predetermined rule. By means of such a link, a communication device may determine, based on the predetermined rule, that the first and second beams have a common directionality, but are configured for transmission with different, preferably orthogonal, polarization.

Abstract: A first terminal receives, on a radio link of a cellular network, at least one uplink pilot signal transmitted by at least one second terminal. The first terminal transmits, on the radio link and to an access node of the cellular network, an uplink report message indicative of at least one property of the received at least one uplink pilot signal.