Abstract: A mobile terminal device may include a radio processing circuit and a baseband processing circuit adapted to interact with the baseband processing circuit. The mobile terminal device may be configured to calculate a plurality of inverse frequency transforms with inputs of a plurality of samples of a frequency-domain signal sequence to generate a plurality of intermediate transforms, wherein each of the plurality of intermediate transforms are composed of a respective plurality of samples, combine the respective plurality of samples of each of the plurality of intermediate transforms to generate a time-domain representation of the frequency-domain signal sequence, generate a random access preamble with the time-domain representation of the frequency-domain signal sequence, and transmit the random access preamble.

Abstract: A technology that is operable to schedule data transfer for a multiple user multiple-input and multiple-output (MU-MIMO) communications network is disclosed. In one embodiment, an enhanced node B (eNode B) is configured with circuitry configured to receive a sounding signal from each of a plurality of user equipment (UEs). One or more major paths of the sounding signals from each of the plurality of UEs are determined. An angle of arrival (AoA) is determined that is associated with each of the one or more major paths. The plurality of UEs are grouped into one or more candidate MU-MIMO sets using the AoAs associated with each of the one or more major paths. Data transmissions are scheduled for one or more of the candidate UEs of the candidate MU-MIMO set on one or more of the major paths of each of the candidate UEs.

Abstract: A hybrid digital and analog beamforming device for a node operable with an antenna array is disclosed. In an example, the hybrid digital and analog beamforming device can include computer circuitry configured to: Segment antenna elements of an antenna array into at least two groups of antenna elements; map antenna ports for transmission chains to one group of the antenna elements; constrain digital precoding weights for a digital precoder for the antenna elements, where the digital precoding weight includes a digital phase and amplitude; and determine analog precoding weights for an analog precoder for the antenna elements, where the analog precoding weight includes an analog phase.

Abstract: A mobile terminal device may include a radio processing circuit and a baseband processing circuit adapted to interact with the baseband processing circuit. The mobile terminal device may be configured to calculate a plurality of inverse frequency transforms with inputs of a plurality of samples of a frequency-domain signal sequence to generate a plurality of intermediate transforms, wherein each of the plurality of intermediate transforms are composed of a respective plurality of samples, combine the respective plurality of samples of each of the plurality of intermediate transforms to generate a time-domain representation of the frequency-domain signal sequence, generate a random access preamble with the time-domain representation of the frequency-domain signal sequence, and transmit the random access preamble.

Abstract: Briefly, in accordance with one or more embodiments, cooperation of multiple beams for transmission is provided by identifying at least two beams among multiple beams that are dominant for a user, determining if there is any beam collision between the at least two beams, and, if there is beam collision between the at least two beams, delaying scheduling on one or more weaker ones of the at least two beams for other users and combining the two or more beams for transmission to the user. Alternatively, cooperation of multiple beams for transmission is provided by, if there is beam collision between the at least two beams, muting one or more weaker ones of the at least two beams and transmitting to the user with a stronger one of the at least two beams.

Abstract: Technology to generate an improved signal-to-interference-plus-noise ratio (SINR) from a set of orthogonal reference signals (RSs) is disclosed. In an example, a user equipment (UE) can include computer circuitry configured to: Receive a set of orthogonal RSs from a node; calculate a SINR for each of the RSs in the set of orthogonal RSs to form a set of SINR; select a maximum SINR from the set of SINR; and quantize the maximum SINR for the set of SINR. Each reference signal can represent a transmission beam direction.

Abstract: Technology to adaptively sectorize a spatial region for parallel multi-user transmissions is disclosed. In an example, a node (e.g., evolved Node B (eNB)) can include computer circuitry configured to: Generate a set of precoding matrices for a set of beam cones in the spatial region; and generate a beam cone for multi-user beamforming transmissions using system information for the beam cone. A precoding matrix in the set of precoding matrices can be used for each beam cone, and each beam cone can cover a beam cone spatial region that differs from another beam cone spatial region of another beam cone in the spatial region. Each beam cone can include system information that differs from the system information of the other beam cones in the spatial region.

Abstract: Embodiments of the present disclosure describe methods, apparatuses, and systems related to a user equipment having virtual mobile terminals. Other embodiments may be described and/or claimed.

Abstract: A technology that is operable to schedule data transfer for a multiple user multiple-input and multiple-output (MU-MIMO) communications network is disclosed. In one embodiment, an enhanced node B (eNode B) is configured with circuitry configured to receive a sounding signal from each of a plurality of user equipment (UEs). One or more major paths of the sounding signals from each of the plurality of UEs are determined. An angle of arrival (AoA) is determined that is associated with each of the one or more major paths. The plurality of UEs are grouped into one or more candidate MU-MIMO sets using the AoAs associated with each of the one or more major paths. Data transmissions are scheduled for one or more of the candidate UEs of the candidate MU-MIMO set on one or more of the major paths of each of the candidate UEs.

Abstract: A hybrid digital and analog beamforming device for a node operable with an antenna array is disclosed. In an example, the hybrid digital and analog beamforming device can include computer circuitry configured to: Segment antenna elements of an antenna array into at least two groups of antenna elements; map antenna ports for transmission chains to one group of the antenna elements; constrain digital precoding weights for a digital precoder for the antenna elements, where the digital precoding weight in dudes a digital phase and amplitude; and determine analog precoding weights for an analog precoder for the antenna elements, where the analog precoding weight includes an analog phase.

Abstract: Disclosed in some examples is a user-equipment including a transceiver; one or more processors configured to: provide a first mobile personality associated with a first mobile application executing on the one or more processors; provide a second mobile personality associated with a second mobile application executing on the one or more processors; and provide a first virtual mobile device associated with the first mobile personality and a second virtual mobile device associated with the second mobile personality, wherein the first and second virtual mobile devices provide independent connectivity to the first and second mobile applications via the transceiver.

Abstract: Examples are disclosed for beamforming to mitigate multi-user leakage and interference. The examples include an evolved node B (eNB) receiving feedback from user equipment (UEs) to indicate strongest or highest channel gains for various beams included in a plurality of beam sets. A selection process or scheme may then be implemented to select individual beams for a UE that minimizes or reduces leakage caused by the UE's use of a given beam. Reducing leakage may reduce interference to other UEs using other beams. Other examples are described and claimed.

Abstract: Technology to provide hybrid beamforming feedback is disclosed. In an example, a user equipment (UE) can include computer circuitry configured to: Receive a reference signal (RS) from a node; calculate an optimal channel direction from the RS; calculate an optimal signal-to-interference-plus-noise ratio (SINR) for the optimal channel direction, where the optimal SINR is conditionally calculated with an intra-cell interference component or calculated without the intra-cell interference component based on a feedback configuration; and transmit the optimal channel direction and the optimal SINR to the node.

Abstract: Examples are disclosed for beamforming to mitigate multi-user leakage and interference. The examples include an evolved node B (eNB) receiving feedback from user equipment (UEs) to indicate strongest or highest channel gains for various beams included in a plurality of beam sets. A selection process or scheme may then be implemented to select individual beams for a UE that minimizes or reduces leakage caused by the UE's use of a given beam. Reducing leakage may reduce interference to other UEs using other beams. Other examples are described and claimed.

Abstract: Technology to provide hybrid beamforming feedback is disclosed. In an example, a user equipment (UE) can include computer circuitry configured to: Receive a reference signal (RS) from a node; calculate an optimal channel direction from the RS; calculate an optimal signal-to-interference-plus-noise ratio (SINR) for the optimal channel direction, where the optimal SINR is conditionally calculated with an intra-cell interference component or calculated without the intra-cell interference component based on a feedback configuration; and transmit the optimal channel direction and the optimal SINR to the node.

Abstract: Technology to adaptively sectorize a spatial region for parallel multi-user transmissions is disclosed. In an example, a node (e.g., evolved Node B (eNB)) can include computer circuitry configured to: Generate a set of precoding matrices for a set of beam cones in the spatial region; and generate a beam cone for multi-user beamforming transmissions using system information for the beam cone. A precoding matrix in the set of precoding matrices can be used for each beam cone, and each beam cone can cover a beam cone spatial region that differs from another beam cone spatial region of another beam cone in the spatial region. Each beam cone can include system information that differs from the system information of the other beam cones in the spatial region.

Abstract: A communication device for providing dual-active personae using a single subscriber identification module. A long term evolution (LTE) protocol stack, maintained in the memory, defines a layered data structure for transmitting and receiving data. A single subscriber identification module provides data for a first persona and a second persona. A processor is coupled to the single subscriber identification module and memory and implements, on the single communication device, first virtual user equipment (vUE) associated with the first persona and second vUE associated with the second persona using virtual LTE protocol stacks for each vUE supported by the single subscriber identification module.

Abstract: A multiple-persona system and method is described, wherein a UE (user equipment) is able to connect to two different networks simultaneously. In a multiple-persona system, one of the personas may have a higher significance than the other persona. For example, a connection to a work network may be prioritized over connection to a home network. In such a situation, it may be desirable to have applications running on the work network have priority over applications running on the home network. Such a method and system may operate independently of the eNodeB or have the eNodeB actively controlling the priority among the personas. The scheduler in either the eNodeB or the UE may contain anew input for the significance of the persona. The significance of the persona is taken into account when sending data to and from the UE.

Abstract: Briefly, in accordance with one or more embodiments, cooperation of multiple beams for transmission is provided by identifying at least two beams among multiple beams that are dominant for a user, determining if there is any beam collision between the at least two beams, and, if there is beam collision between the at least two beams, delaying scheduling on one or more weaker ones of the at least two beams for other users and combining the two or more beams for transmission to the user. Alternatively, cooperation of multiple beams for transmission is provided by, if there is beam collision between the at least two beams, muting one or more weaker ones of the at least two beams and transmitting to the user with a stronger one of the at least two beams.

Abstract: Embodiments of system, device, and method configurations for implementing a progressive channel state indicator (CSI) evaluation are disclosed herein. In one example, techniques for increasing the precision of channel feedback information by detecting a best beam index in a progressively scanning grid of beams is deployed in a Long Term Evolution (LTE) network. The use of a progressive CSI technique may be used to improve the robustness of beamforming in network configurations deploying multi-user multiple input multiple output (MU-MIMO) transmission modes.