Abstract: The present application relates to a method for operating a cellular multiple input and multiple output system comprising a first device (20) having at least two antenna arrays (22, 23) and second device having at least two antennas (32, 33). According to the method, a same uplink pilot signal is broadcasted from each antenna (32, 33) of the second device (30) and the same uplink pilot signal is received at each antenna array (22, 23) of the first device (20). At the first device (20), first device transmission parameters are determined for each antenna array (22, 23) depending on the received same uplink pilot signal. Downlink pilot signals are sent via antenna array (22, 23) using the determined first device transmission parameters and the downlink pilot signals are received at each antenna (32, 33) of the second device (30). This second device determines second device receiving parameters for each antenna (32, 33) depending on the received downlink pilot signals.

Abstract: The invention is directed to systems, methods, and computer program products for determining timing relationships of pilot and data in mobile network communications. Specifically, an uplink (UL) transmission is received at a base station (BS) from a user equipment (UE) in network communication with the BS via a communication channel. Based on the UL transmission, a channel coherence time is determined indicating a period of time during which the communication channel is considered to be substantially unchanged. In response, a total transmission duration is determined based on the channel coherence time indicating a period of time associated with transmission of a data frame.

Abstract: Embodiments are directed to systems, methods and computer program products for pilot time slot hopping to mitigate interference-based pilot time slot contamination. Embodiments include generating a multiple input multiple output (MIMO) system message frame structure comprising a header comprising a plurality of header time slots, an uplink (UL) time slot (optional), and a downlink (DL) time slot. Generating includes determining, based on a predetermined scheme, allocation of at least one of the plurality of header time slots to at least one user device within a predetermined area.

Abstract: A cellular network allocates resources to a device for transmission of a signal for finding at least one RFID tag. The device uses the resources allocated by the cellular network to transmit a signal to the at least one RFID tag in a frequency band licensed to the cellular network.

Abstract: A device controls each antenna to transmit at least one first UL pilot signal and to receive, for each first UL pilot signals DL data encoded according to the respective first UL pilot signal. The receive properties of the DL data are combined and a second UL pilot signal is determined based on the combined receive properties. The second UL pilot signal is repeatedly transmitted. The techniques may be applied in a massive multi-input multi-output scenario.

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: Adaptive selection of antenna configurations by wireless nodes that comprise a plurality of antenna elements adapted for a plurality of different antenna configurations. The selection of the antenna configuration is made based on the quality of signal(s) received by the wireless node. The wireless nodes are operable for communication in the mm-wave frequency band and, in specific embodiments, the different antenna configurations include two or more of a wide-coverage area antenna configuration, a Multiple-Input Multiple-Output (MIMO) configuration and a Beamforming (BF) configuration.

Abstract: A method for performing wireless data communication is disclosed, which uses a first device and a second device, and which comprises the steps of a) transmitting an outgoing radar signal by the first device, b) determining, by the first device, a receive property of an incoming radar signal which is associated with the outgoing radar signal, and c) setting at least one parameter for performing the wireless data communication by the first device based on the receive property of the incoming radar signal.

Abstract: The present invention relates to a method for selecting a cell of a wireless cellular communication network (100) having a plurality of cells (111-115). According to the method, a cell size information representing a size of an area served by a cell (111-115) of the plurality of cells is received by a user equipment (106). The received cell size information is transmitted from the user equipment (106) to a base station (105) of the wireless cellular communication network (100) by which the user equipment (106) is served. A cell (111-115) of the plurality of cells is selected for serving the user equipment (106) based on the cell size information.

Abstract: A method, in a first subset of a sequence of transmission intervals, including communicating, on a radio link of a cellular network and according to a resource mapping, pilot signals having a non-zero first transmit power. The method includes, in a second subset of the sequence of transmission intervals, communicating, on the radio link and according to the resource mapping, the pilot signals having a non-zero second transmit power which is larger than the first transmit power.

Abstract: The present invention relates to a method for operating a wireless communication system. The wireless communication system comprises a base station and a terminal. The terminal comprises a plurality of antenna elements and provides at least two antenna array configurations comprising a first antenna array configuration comprising at least two antenna elements having same radio transmission characteristics and a second antenna array configuration comprising at least two antenna elements having different radio transmission characteristics. According to the method, a selection process for selecting and an antenna array configuration of the at least two antenna array configurations is triggered and for each of the at least two antenna array configurations a corresponding figure of merit is determined. The corresponding figure of merit is determined based on corresponding pilot signals received from the base station via the corresponding antenna array configuration.

Abstract: A base station, e.g., for massive MIMO, has channel receivers, each connected to a respective antenna among a plurality of antennas to receive an RF transmission signal generated by a communication device (CD). Each channel receiver has a channel front-end module, which has a first bandwidth and converts the RF transmission signal into one or more first analog baseband signals. The channel receivers are collectively operable to define a spatial beam focus at the CD, based on channel state information of the CD. The base station has pilot signal receivers, each connected to a respective antenna among the plurality of antennas to receive an RF pilot signal generated by the CD or another CD. Each pilot signal receiver has a pilot signal front-end module, which has a second bandwidth that is smaller than the first bandwidth and converts the RF pilot signal into one or more second analog baseband signals.

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: 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 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: A mobile communication network comprises a first cell (200) and a second cell (210, 220, 230, 240) arranged in a coverage area of the first cell (200). A node (100) of the mobile communication network obtains positioning data of a UE (11, 12, 13, 14, 15, 16). The node (100) correlates the positioning data to a coverage area of the second cell (210, 220, 230, 240). Depending on the correlation of the positioning data and the coverage area of the second cell (210, 220, 230, 240), the node (100) selects between an active state and an inactive state of the second cell (210, 220, 230, 240). In accordance with the selected state, the node controls a base station of the second cell (210, 220, 230, 240).

Abstract: The present application relates to methods for operating a terminal device (31) and a base station (20) of a cellular wireless multiple-input and multiple-output, MIMO, system (10). An uplink precoding for transmitting uplink signals from a plurality of antenna elements (312) of the terminal device (31) to the base station (20) is determined. An uplink pilot signal using the uplink precoding and a radio resource of a transmission frame of the MIMO system is transmitted from the plurality of antenna elements (311). At the base station (20), a downlink precoding and uplink receive parameters are adjusted based on a receive property of the precoded uplink pilot signal from the terminal device (31).

Abstract: A first message is received, wherein the first message comprises information indicative of a spatial propagation characteristic of the first message. A beam configuration is determined based on the information. Then, a directed, beam-formed second message is transmitted using the beam configuration.

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).

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.