Abstract: The present disclosure comprises a method performed by a wireless device, wherein the wireless device is configured to communicate, using a set of beams, with a network node of a wireless communication system. The method comprises receiving, on one or more receive beams, one or more downlink, DL, signals from the network node. The method comprises determining one or more DL measurement parameters based on the received one or more DL signals. The method comprises determining whether the one or more DL measurement parameters satisfy a criterion. The method comprises, when it is determined that at least one of the one or more DL measurement parameters does not satisfy a criterion, indicating to the network node a beam reciprocity parameter, wherein the beam reciprocity parameter indicates a qualitative measure of one or more transmission beams of the wireless device.

Abstract: A method is disclosed performed by a transmitter node, for enabling reception beam selection at one or more receiver nodes. The method comprises obtaining a polarization profile, wherein the polarization profile defines a respective polarization for a sequence of probing occasions. The method comprises transmitting a pilot signal in each probing occasion of the sequence of probing occasions according to the polarization profile, in one single transmission beam. The polarization profile defines a first polarization to be used in N probing occasions and a second polarization to be used in M probing occasions in the sequence of probing occasions, where M is smaller than N and M is non-zero.

Abstract: A terminal (10) configured for communication with a wireless network (100), the terminal comprising: —a transceiver (313) for communicating with the wireless network; —logic (310) configured to control the transceiver to transmit (510), to the wireless network, a power class capability indication identifying communication capability of the terminal in the wireless network under at least a first power class (PC-A) and a second power class (PC-B); control the transceiver to receive (550), from the wireless network, resource configuration to execute wireless communication using an identified one, or both, of said first and second power class; and control the transceiver to operate (555) with the received resource configuration using the first and/or second power class.

Abstract: The present application relates to methods for operating a communication de-vice. According to an embodiment, the method comprises transmitting (201) configuration data (300) indicating a first polarization of a first radio frequency signal (301) and a second polarization of a second radio frequency signal (302), transmitting (202) the first radio frequency signal (301) using the first polarization, and transmitting (203) the second radio frequency signal (302) using the second polarization.

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: Methods (10, 30) and devices (20, 40) for performing radio transmissions in a wireless communication network are provided. A method (30) associated with a wireless terminal (40, 40A) which performs radio transmissions in the wireless communication network comprises: receiving (31) a multiple input multiple output, MIMO, transmission from an access node (20) of the wireless communication network; estimating (32) a spatial orientation (?, (?)) of an antenna array (42) of the wireless terminal (40, 40A) based on measurements performed by at least one sensor (43) of the wireless terminal (40, 40A); and based on the estimated spatial orientation (?, (?)), filtering out (33) a polarization crosstalk from the received MIMO transmission, the polarization crosstalk being associated with the spatial orientation (?, (?)) of the antenna array (42) of the wireless terminal (40, 40A).

Abstract: The present disclosure provides a method, performed by a wireless device, for capability signalling. The wireless device comprises one or more antenna panels configured to communicate with a network node. The method comprises obtaining a capability of at least one of the antenna panels, wherein the capability comprises at least one of: a receive-only panel, ROP, capability, a transmit-only panel, TOP, capability, a receive-and-transmit panel, RTP, capability and a dynamic RTP capability. The method comprises transmitting, to the network node, control signalling indicative of the obtained capability of the at least one antenna panel.

Abstract: Methods (10) and devices (20; 30) for configuring multiple input multiple output, MIMO, wireless transmissions are provided.

Abstract: Methods (50, 60) are provided for operating first and second network nodes (80, 90) of a wireless network which participate (51, 61) in a multiple input multiple output, MIMO, wireless transmission. The network nodes (80, 90) respectively comprise an antenna array (20, 30, 91) having antenna elements (11, 12) being associated with respective ones of two mutually orthogonal planes of polarization. The respective method (50, 60) comprises: communicating (54, 64), by the first network node (80) and to the second network node (90), a sequence of pilot symbols, each of which is associated with one of a set of mutually distinct states of polarization for transmission of the respective pilot symbol; and communicating (55, 65), by the second network node (90) and to the first network node (80), at least one feedback signal associated with the pilot symbols. The at least one feedback signal is indicative of a set state of polarization.

Abstract: Systems and methods for managing interference in a communication network include transmitting a first downlink signal from a first transmit/receive point (TRP) to an electronic device using a beam. The electronic device can also receive a second downlink signal from a second TRP, where a portion of the first downlink signal from the first TRP interferes with the second downlink signal. The first TRP then receives a series of uplink pilot signals from the electronic device. Using the received uplink pilot signals, the first TRP can then estimate the angle of departure (AoD) for the intended signal (first downlink signal), and the AoD for the interference signal. The first TRP can then reconfigure the beam used to transmit the first downlink signal based on the estimated AoDs for the intended signal and interference signal to manage the interference effect that the first leakage signal has on the second downlink signal.

Abstract: A sequence of downlink synchronization signals is transmitted to a device using a plurality of propagation channels. The plurality of propagation channels is selected according to an at least partly random pattern.

Abstract: Operating a cellular multiple-input and multiple-output system including a first device having an antenna array having a plurality of antennas, and a second device having at least two antennas includes a same uplink pilot signal broadcast from each antenna of the second device, and received at the antenna array of the first device. Depending on the received same uplink pilot signal, a first set of first device receiving parameters for the antenna array is determined. From each antenna of the at least two antennas of the second device, a corresponding uplink pilot signal is sent and received at the antenna array of the first device using the first set of first device receiving parameters. At the first device, for each received uplink pilot signal, a corresponding second set of first device receiving parameters is determined depending on the plurality of received orthogonal uplink pilot signals.

Abstract: A system for reflecting an RF signal comprises a plurality of antenna units configured to receive the RF signal and passively reflect the RF signal. The antenna units are reconfigurable to achieve beamforming in reception and reflection, respectively, of the RF signal. The system may be a Large Intelligent Surface (LIS). A control system is configured to: detect (301) a wake-up signal WUS1, and after detecting WUS1, perform a first training operation (I) comprising: receiving (302), by the antenna units, a first reference signal RS1 from a first device D1 and reconfiguring (303) the antenna units based on RS1 to achieve beamforming in reception in a direction of D1. By the combination of WUS1 and the first training operation, the system may be automatically configured to achieve beamforming in relation to D1 which is thereby enabled to communicate via the system.

Abstract: A method for operating a communication device configured to receive radio signals in multiple device beams, the method comprising: —receiving (512) at least one identifiable radio signal (321,322) from a wireless network; —determining (514) a link quality metric for one or more device beams (34,35,36) based on the at least one received radio signals; —transmitting (516) device beam indication data (522), including link quality metric for at least one of said one or more device beams (34), to an access node (20) of the wireless network, which device beam indication data is formatted to identify at least one pair (34,35) of said multiple device beams configured with common settings but different polarizations.

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: The present disclosure provides a method performed by a network node for beam control signalling. The network node is configured to communicate with a wireless device. The method comprises obtaining a first set of candidate beams from the wireless device for communication with the network node based on beam quality indicators. The method comprises determining a second set of candidate beams based on the first set and a number of beams to be used in the communication with the wireless device. The number of candidate beams of the second set is larger than the number of beams to be used for communication with the wireless device. The method comprises transmitting, to the wireless device, control signalling indicative of the second set of candidate beams.

Abstract: A method, performed by a network node, for beam reference signaling, is disclosed. The network node is configured to communicate, using a set of beams, with a wireless device of a wireless communication system. The method comprising transmitting one or more first downlink, DL, beam reference signals to the wireless device; and receiving, from the wireless device, control signaling indicative of a need for altering downlink beam reference signaling.

Abstract: A wireless communication device includes a wireless interface for conducting wireless communications with a network access node of a wireless network, the wireless interface having uplink and downlink beam forming capabilities. The wireless communication device further includes a control circuit configured to detect a predetermined condition and, in response to the detection, temporarily operate the wireless interface without beam correspondence between uplink and downlink operations; and transmit a message to the network access node that beam correspondence is not used by the wireless communication device.

Abstract: A radio communication terminal (UE2) configured to act as a radar receiver, comprising: —a radio transceiver (323), —logic (320) configured to communicate data, via the radio transceiver, on a radio channel (101), wherein the logic is further configured to obtain (233), via the radio transceiver, a radar probing request (230) to detect radio signal echoes; determine (235) a receive direction (Dir2) based on the request; control the radio transceiver to detect (242) a receive property of the radio signal echoes in said direction; and transmit (261), via the radio transceiver, data (260) associated with the detected receive property to a radio communication device (BS1, UE1).

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 mode for communication between an electronic device (14) and a network node (12). The selection may be between P-MIMO Mode A, P-MIMO Mode B, B-MIMO Mode A, or B-MIMO Mode B. Determining the desired mode for communication is based on the ability and/or desirability of the network node (12) to efficiently process a maximum threshold number of electronic devices using the P-Mimo Mode A or B-MIMO Mode A and, thereafter, granting MIMO Mode B communication access to any subsequent electronic devices joining the communication network. Communication mode selection may occur dynamically based on changing channel conditions caused by mobility of the electronic user equipment devices and what overlapping and/or non-overlapping beams are needed to be used.