INTERDIGITAL PATENT HOLDINGS, INC.
|INTERDIGITAL PATENT HOLDINGS, INC. Patent applications|
|Patent application number||Title||Published|
|20150257085||ENHANCED ACTIVE SCANNING IN WIRELESS LOCAL AREA NETWORKS - A method for active scanning in a wireless network may include two transmitters. In such a method, the following steps may take place: detecting a first probe request having a scanning target originating from a first transmitter; desiring to send a probe request to the scanning target from a second transmitter; and canceling the second probe request on a condition that the second transmitter detects the first probe request.||09-10-2015|
|20150257054||PROCEDURES FOR OPERATING IN LONG TERM EVOLUTION IDLE MODE - Various procedures for operating a wireless transmit/receive unit (WTRU) in Long Term Evolution (LTE) Idle mode are described. The procedures include: methods for applying cell reselection priorities in the WTRU, methods for converting a mobility state of the WTRU between operating modes, a method for assigning a mobility state to the WTRU, and a method for determining whether the WTRU may access a closed subscriber group (CSG) cell. Also described are methods and an apparatus on the operations of the LTE mobility state transition mechanism between LTE WTRU Idle mode and Connected mode, a definition of the Pcompensation parameter for LTE, inter-frequency and inter-radio access technology cell reselection priority validity definitions, and coverage extension principles for CSG cells.||09-10-2015|
|20150257047||DATA FLOW MOBILITY - A wireless transmit/receive unit (WTRU) may communicate using a data flow that is defined according to flow identification information (FII). The WTRU may participate in the transfer of the data flow between access networks of diverse radio access technologies. The WTRU may communicate with a mobility function to obtain access network and mobility policy information. The mobility function may be, for example, an Access Network Discovery Function (ANDSF). The mobility policy information may describe the conditions by which the transfer of data flows between access networks may be permitted.||09-10-2015|
|20150257046||METHOD AND APPARATUS FOR SUPPORTING DYNAMIC AND DISTRIBUTED MOBILITY MANAGEMENT - A method and apparatus are described for supporting dynamic and distributed mobility management (DMM). A wireless transmit/receive unit (WTRU) may attach to a first distributed gateway (D-GW), and configure a first Internet protocol (IP) address based on a prefix locally provided by the first D-GW. The WTRU may move and attach to a second D-GW while carrying out an on-going communication session with a correspondent node (CN). The WTRU may configure a second IP address based on a prefix provided by the second D-GW. The WTRU may use the first IP address for carrying out the on-going session and use the second IP address for a new communication session.||09-10-2015|
|20150257024||SELF-OPTIMIZATION OF BACKHAUL RADIO RESOURCES AND SMALL CELL BACKHAUL DELAY ESTIMATION - Control and/or management plane interactions may be implemented between one or more wireless backhaul links and respective associated access and/or core networks. The control and/or management plane interactions may be implemented in accordance with self-optimization functionalities and may be implemented to perform radio resource management (RRM) for the one or more wireless backhaul links. Packet-based synchronization and/or delay measurement techniques may be implemented to determine estimated values for wireless backhaul induced delay. The delay estimation information may be used by one or more devices in a wireless communications network, such as a packet data network gateway (PGW), a small cell gateway (SC GW), or an access point (AP), such as a small cell access point (SC AP). Delay estimation for wireless backhaul links may be implemented in accordance with PTP message replication and/or side-channel signaling, dual synchronization with GPS and PTP signaling, and/or timestamping.||09-10-2015|
|20150256314||ADAPTIVE CONTROL CHANNEL - A wireless network may implement a reduced bandwidth for control information transmitted and/or received on the wireless network. The reduced bandwidth may be used to avoid interference that may be detected from an in-band or adjacent channel. The reduced bandwidth may be used for transmission and/or reception of control information on a cellular or Wi-Fi channel. An eNB or an access point (AP) may signal to a wireless transmit/receive unit (WTRU) information associated with the reduced control channel, such as the power and/or the location of the channel in a frequency band. The control channel may be shifted to avoid a change in interference.||09-10-2015|
|20150256245||METHOD AND APPARATUS FOR SUPPORTING MANAGEMENT ACTIONS FOR VERY HIGH THROUGHPUT IN WIRELESS COMMUNICATIONS - A method and apparatus may be used in Very High Throughput (VHT) Wireless Local Area Network (WLAN) management actions. Management action frames such as VHT Action frames may be used to implement VHT features in WLANs. Extensions to 802.11 Action frames may be used to support VHT features and provide backward compatibility. VHT Management Actions may be supported with VHT Action frames and VHT extensions to 802.11 Action frames in various categories such as Direct Link Setup (DLS), Public, Spectrum Management and high throughput (HT). An access point (AP) or a wireless transmit/receive unit (WTRU) may indicate VHT capability by way of signaling.||09-10-2015|
|20150249964||METHOD AND APPARATUS FOR RADIO LINK SYNCHRONIZATION AND POWER CONTROL IN CELL_FACH AND IDLE MODE - A method and apparatus for radio link synchronization and power control in CELL_FACH state and idle mode are disclosed. A wireless transmit/receive unit (WTRU) transmits a random access channel (RACH) preamble and receives an acquisition indicator acknowledging the RACH preamble via an acquisition indicator channel (AICH) and an index to an enhanced dedicated channel (E-DCH) resource. The WTRU determines a start of an E-DCH frame. An F-DPCH timing offset is defined with respect to one of the RACH access slot and an AICH access slot carrying the acquisition indicator. A relative F-DPCH timing offset may be signaled to the WTRU and the WTRU may determine a start of an E-DCH frame based on the relative F-DPCH timing offset and timing of an AICH access slot including the acquisition indicator. The WTRU may transmit a dedicated physical control channel (DPCCH) power control preamble before starting an E-DCH transmission.||09-03-2015|
|20150245329||METHOD AND APPARATUS FOR COMPONENT CARRIER AGGREGATION IN WIRELESS COMMUNICATIONS - A wireless transmit/receive unit (WTRU) receives a downlink subframe having multiple component carriers, each component carrier having control information encoded in a physical data control channel (PDCCH). The WTRU performs a blind decoding of control information in a first PDCCH located within a first component carrier to obtain a location of a second PDCCH located within a second component carrier, where the location of the second PDCCH is relative to a location of the first PDCCH as control channel element offset. The WTRU decodes the second PDCCH at the obtained location.||08-27-2015|
|20150245304||METHOD AND APPARATUS FOR TRANSMIT POWER CONTROL FOR MULTIPLE ANTENNA TRANSMISSIONS IN THE UPLINK - Techniques for transmit power control for multiple antenna transmissions in an uplink are disclosed. A wireless transmit/receive unit (WTRU) generates at least one input stream for transmission and applies a gain factor to each channel. The gain factor is determined based on a reference channel power estimate. The WTRU generates at least two data streams from the input stream for transmission via a plurality of antennas and applies weights to the data streams. The gain factor and/or the weights are controlled such that a transmit power on each antenna is within a maximum allowed value. The WTRU may perform power scaling on a condition that a transmit power on any antenna exceeds the maximum allowed value. The WTRU may scale down an enhanced dedicated channel (E-DCH) dedicated physical data channel (E-DPDCH) first before other channels. For multiple E-DCH streams, the WTRU may calculate an E-DPDCH power offset based on an additional power offset factor due to multiple stream transmission.||08-27-2015|
|20150245234||Dynamic Point-To-Point Spectrum Licensing - Systems, methods, and instrumentalities are provided to implement granting a license to a millimeter wave base station (mB) in a wireless network. The mB may send a license request. The license request may be associated with a beam direction in a frequency band. The mB may receive a measurement schedule. The mB may take an interference measurement, e.g., in accordance with the measurement schedule. The interference measurement may be associated with one or more of the beam direction, a frequency band, or an assigned time period. The mB may send the interference measurement to the license coordinator. The mB may receive a temporary license for the beam direction in the frequency band. The temporary license may include a first transmit power restriction. The mB may receive an instruction to send a signal burst. The mB may receive a non-temporary license. The non-temporary license may include a second transmit power restriction.||08-27-2015|
Patent applications by INTERDIGITAL PATENT HOLDINGS, INC.