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    Method and apparatus for multiple-input multiple-output operation
    192.
    发明授权
    Method and apparatus for multiple-input multiple-output operation 有权

    公开(公告)号：US10355759B2

    公开(公告)日：2019-07-16

    申请号：US15375528

    申请日：2016-12-12

    Applicant: InterDigital Patent Holdings, Inc.

    Inventor： Shahrokh Nayeb Nazar ,  Lakshmi R. Iyer ,  Robert L. Olesen ,  Benoit Pelletier ,  Manasa Raghavan ,  Moon-il Lee

    IPC: H04W4/00 ,  H04B7/0452 ,  H04W72/04

    Abstract: An eNode-B for a multi-user multiple-input multiple-output (MU-MIMO) downlink transmission to at least first and second wireless transmit/receive units (WTRUs) via resource elements (REs) of first and second spatial layers, the eNode-B comprising a transmitter and a processor, the processor coupled to the transmitter. The processor configured to generate the MU-MIMO downlink transmission including: allocating a first set of the REs, as first resources, to the first spatial layer for the first WTRU, and a second set of the REs, as second resources, to the second spatial layer for the second WTRU, mapping a first WTRU-specific reference signal (RS) associated with the first WTRU on a subset of the first resources, and a second WTRU-specific RS associated with the second WTRU on a subset of the second resources, muting allocated REs of the first resources overlapping with the subset of the second resources used for the second WTRU-specific RS, and allocated REs of the second resources overlapping with the subset of the first resources used for the first WTRU-specific RS. The transmitter configured to send the MU-MIMO downlink transmission.

    Discovery signal generation and reception
    194.
    发明授权
    Discovery signal generation and reception 有权

    公开(公告)号：US10264437B2

    公开(公告)日：2019-04-16

    申请号：US14765201

    申请日：2014-01-16

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Gwenael Poitau ,  Ghyslain Pelletier ,  Marian Rudolf ,  Benoit Pelletier ,  Paul Marinier ,  Diana Pani

    IPC: H04L5/06 ,  H04W8/00 ,  H04W76/14 ,  H04W76/02 ,  H04W72/04

    Abstract: Physical layer processing and procedures for device-to-device (D2D) discovery signal generation and transmission and scheduling of D2D discovery signals are described. Detection and measurement of a D2D discovery signal, D2D signal identity management, and monitoring by a wireless transmit/receive unit (WTRU) of PDCCH for D2D discovery scheduling is described, as is a WTRU that may be configured with a D2D-specific transmission/reception opportunity pattern. The discovery signal may carry a payload for explicit information about user and/or service identity, and may be mapped to physical resources in such a way as to decouple transmission/reception of the discovery signal from downlink operations. A WTRU may measure a D2D discovery signal quality and report to the network.

    METHOD AND APPARATUS FOR PERFORMING DEVICE-TO-DEVICE DISCOVERY
    197.
    发明申请
    METHOD AND APPARATUS FOR PERFORMING DEVICE-TO-DEVICE DISCOVERY 审中-公开

    公开(公告)号：US20180115937A1

    公开(公告)日：2018-04-26

    申请号：US15837876

    申请日：2017-12-11

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Gwenael Poitau ,  Ghyslain Pelletier ,  Paul Marinier ,  Diana Pani ,  Samian Kaur ,  Benoit Pelletier

    IPC: H04W40/24 ,  H04L29/08

    CPC classification number: H04W40/246 ,  H04L67/16 ,  H04W8/005 ,  H04W76/14

    Abstract: Methods and apparatus for performing device-to-device (D2D) discovery are described. A service discovery process may include a discoverable device (e.g., a wireless transmit/receive unit (WTRU)) sending a discovery request, over a wireless connection, for a radio resource for the purpose of performing a transmission for radio frequency (RF) proximity detection for a given service. The WTRU may receive a discovery response including a configuration for RF proximity detection from a network, which configuration may be associated to the service. The configuration for RF proximity may be received by dedicated signaling, (e.g., physical downlink shared channel (PDSCH)), in particular for a discoverable WTRU. The configuration for RF proximity may be received on a broadcast channel, (e.g., a discovery shared channel (DISCH)), in particular for a monitoring WTRU, and may include one or more service identities, each associated with an RF proximity detection configuration, or a validity information and a measurement configuration.

    Methods and apparatus for determining device-to-device transmission patterns
    198.
    发明授权
    Methods and apparatus for determining device-to-device transmission patterns 有权

    公开(公告)号：US09930709B2

    公开(公告)日：2018-03-27

    申请号：US14819245

    申请日：2015-08-05

    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.

    Inventor： Chao-Cheng Tu ,  Benoit Pelletier ,  Paul Marinier ,  Marian Rudolf

    IPC: H04W76/02 ,  H04W72/12 ,  H04W74/04 ,  H04W74/08

    CPC classification number: H04W76/14 ,  H04W72/1252 ,  H04W74/04 ,  H04W74/0833

    Abstract: Embodiments include methods and apparatuses for the design, construction and selection of base patterns and associated control signaling for direct device-to-device (D2D) communication, independent of a network. An embodiment includes the selection and transmission, by a wireless transmit and receive unit (WTRU), of base patterns in a scheduling period when the number of medium access control (MAC) protocol data units (PDUs) is larger than the number of MAC PDUs that a family of pre-determined base patterns can support. An embodiment may include the selection and transmission, by a WTRU, of base patterns in a scheduling period when the number of MAC PDUs is smaller than the number of MAC PDUs that a family of pre-determined base patterns can support. In addition, embodiments may include the selection, by a WTRU, of a base pattern or base patterns to minimize interference with other communications and to use resources efficiently.

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