Abstract: Methods (10; 30) and devices (20; 40) for controlling polarization division multiplex in a wireless communication network are provided.

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 invention relates to a radio-based object detection method. According to the method, first location information relating to an object of interest (31) are determined with a first device (11) using radio waves. Based on the first location information, a second device (21) from a plurality of candidate devices (21 to 29) is selected. A request for determining second location information relating to the object of interest (31) is transmitted via a telecommunication network to the second device (21).

Abstract: A device (112, 130) is configured to communicate data (108) on a radio channel (101, 105, 106) employing first resource elements. The device (112, 130) is further configured to participate in a radar probing (109) employing second resource elements which are orthogonal to the first resource elements.

Abstract: A radio device transmits outgoing radio signals on a carrier frequency to a further radio device and receives incoming radio signals on the same carrier frequency from the further radio device. The radio device switches at least between a first antenna configuration and a second antenna configuration, e.g., by using a switch. In the first antenna configuration, the outgoing radio signals are transmitted via at least one first antenna while simultaneously the incoming radio signals are received via at least one second antenna. In the second antenna configuration, the outgoing radio signals are transmitted via the at least one second antenna while simultaneously the incoming radio signals are received via the at least one first antenna.

Abstract: A method for beam sweeping in a wireless communication system is described. Beam sweeping includes performing a reduced beam sweep corresponding to a reduced set of beams that are a subset of a full set of beams available for transmitting and/or receiving from an antenna module, without sweeping beams that are not members of the reduced set of beams. The method includes selecting a beam out of the reduced set of beams for transmitting and/or receiving from the antenna module based on the reduced beam sweep without sweeping beams that are not members of the reduced set of beams. Related devices are disclosed.

Abstract: The present application relates to methods for calibrating an array antenna (301) of a terminal (300) in a MIMO communication system (100). The method comprises: communicating, to a base station (200) of the MIMO communication system (100), a calibration capability indication from the terminal (300) indicative of a capability of the terminal (300) of calibrating receivers and transmitters for beam correspondence; communicating, from the base station (200) of the MIMO communication system (100) to the terminal (300), a control message indicative of radio resources; using the radio resources: calibrating receivers and transmitters of the terminal (300) for beam correspondence by performing over-the-air measurements of mutual coupling between antennas (310-312) of the array antenna (301).

Abstract: A system is disclosed that includes a base station having a plurality of antennas a control unit which analyses pilot signals received from the terminal device at the plurality of antennas to obtain information about a wireless channel property of the wireless channel between the terminal device and the plurality of antennas. According to a method, a plurality of pilot signals is transmitted from the terminal device to the base station, and information about the wireless channel property of the wireless channel between the terminal device and the plurality of antennas of the base station is determined based on a predefined number of last recently transmitted pilot signals of the plurality of pilot signals from the terminal device. Based on the information about the wireless channel property, at least one parameter of the plurality of antennas is configured by the base station.

Abstract: Multi-beam multiplexing in mobile radio communication networks, specifically for initial network access transmissions, such as Random Access Channel (RACH) transmissions and other initial network access signals that affect the operation of the Random Access operation. A network node is configured to distribute, simultaneously, a plurality of beams across a predetermined coverage area. Each of the beams are associated with a different coverage area. In addition, a plurality of sub-carriers are precoded in an OFDM modulated signal, which includes control information, for the purpose of shaping (i.e., beamforming) each of the plurality of beams. In this regard, one or more sub-carriers are mapped to a beam.

Abstract: A method includes communicating, between a first device and a second device, a scheduling control message indicative of first time-frequency resources for a first uplink reference signal transmission from the second device to the first device and further indicative of second time-frequency resources for a second uplink reference signal transmission from the second device to the first device. Wherein the first uplink reference signal transmission is associated with a receive beam having a first opening angle. Wherein the second uplink reference signal transmission is associated with a receive beam having a second opening angle. The first opening angle is smaller than the second opening angle. Furthermore the first uplink reference signal transmission is beam swept at the first device, and the second uplink reference signal transmission is not beam swept at the first device.

Abstract: A beam sweep configuration of at least one beam sweep is exchanged between nodes of a network. The beam sweep configuration may be indicative of a time-duplex configuration of a plurality of beams of the at least one beam sweep. A beam configuration may be determined based on a receive property of pilot signals transmitted and/or received in the beam sweep.

Abstract: Method carried out in a radio terminal for playing streaming media, which terminal includes a modem for connecting to a radio network, and a data streaming client including a streaming data buffer for receiving streaming data from a streaming data server through the radio network, the method comprising transferring data buffer size information from the streaming client to the modem; signaling the network, by means of the modem, to indicate streaming service initiation and data buffer size; buffering media data of a streaming media file received through the network according to a buffer scheme adapted dependent on the data buffer size; playing streaming media generated from buffered media data; and signaling the network, by means of the modem, to indicate streaming service termination. A buffer filling signal may be received from the network, which includes a recommendation of a suitable instance for buffer filling, wherein the buffer scheme may be determined dependent on the received signal.

Abstract: Multi-beam multiplexing in mobile radio communication networks, specifically for initial network access transmissions, such as Random Access Channel (RACH) transmissions and other initial network access signals that affect the operation of the Random Access operation. A network node is configured to distribute, simultaneously, a plurality of beams across a predetermined coverage area. Each of the beams are associated with a different coverage area. In addition, a plurality of sub-carriers are precoded in an OFDM modulated signal, which includes control information, for the purpose of shaping (i.e., beamforming) each of the plurality of beams. In this regard, one or more sub-carriers are mapped to a beam.

Abstract: A method of operating a device (101, 102) includes selecting between a first operational mode (8098) and a second operational mode (8099) for a wireless link (111) established between a terminal (102) and a base station (101) of the network; in response to selecting the first operational mode (8098): determining first values for antenna weights from a plurality of predefined candidate values; and in response to selecting the second operational mode (8099): determining second values for the antenna weights based on a calculation using a receive property of pilot signals (4021) communicated between the terminal (102) and the base station (101) as an input.

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: A method, system, or transmitting device including at least two antennas (e.g., orthogonally polarized antennas) that derives the precoding for each of the at least two antennas. The transmission signal provided to each antenna is based on an individual precoder for each antenna that is based on the signals received by the particular antenna.

Abstract: A base station, a user equipment and methods are disclosed for establishing access in a base station for a user equipment and for performing measurement in a user equipment in a radio communication system, comprising 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; receiving, in the base station, an indication that a user equipment supports wideband operation; and transmitting a first cell signal from the base station to the user equipment, which first cell signal provides information identifying said cells available within the wideband carrier.

Abstract: A device (112, 130) is configured to communicate data (108) on a radio channel (101, 105, 106) according to a radio access technology. The radio access technology comprises pilot signals and transmission blocks for the data (108). The device (112, 130) is further configured to participate in the radar probing (109) employing at least some of the pilot signals as radar probe pulses of the radar probing (109).

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.

Abstract: Beam sweep configuration (4001, 4002) of at least one beam sweep (391-394) is exchanged between nodes (101, 102) of a network. The beam sweep configuration may be indicative of a time-duplex configuration of a plurality of beams of the at least one beam sweep (391-394).