Patents Assigned to InterDigital Patent Holdings, Inc.
  • Publication number: 20210136777
    Abstract: Methods and apparatus for interference discovery for full-duplex data transmission are provided. In an embodiment, a station (STA) receives a full-duplex request message from an access point (AP). The STA transmits a first full-duplex response message to the AP. The STA listens for a second full-duplex response message transmitted from a second STA to the AP. The STA determines a received power of the second full-duplex response message from the second STA to the AP. The STA receives a first trigger message from the AP. The first trigger message includes information to perform full-duplex data transmission. The STA transmits data to the AP in response to the first trigger message. The STA transmits interference information to the AP.
    Type: Application
    Filed: May 3, 2019
    Publication date: May 6, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Alphan Sahin, Oghenekome Oteri, Li-Hsiang Sun, Xiaofei Wang, Rui Yang
  • Patent number: 10993265
    Abstract: Method and apparatus are disclosed for optimizing Random Access Channel (RACH) transmissions from wireless transmit/receive units (WTRUs) for multiple transmissions. A WTRU may initiate uplink transmission for a random access procedure using a configured time resource such that the uplink resources may be time shared by a plurality of WTRUs. The transmission time may be calculated on an absolute or relative basis. A backoff time may be applied before starting the uplink transmission. The backoff time may be WTRU-specific, WTRU group-specific, specified per access class and may be determined based on a priority basis. A scaling factor may be applied to the backoff time. A contention free allocation method may be used to determine the appropriate resource. The data may be transmitted with and without a preamble. The WTRUs may include machine type communication devices and may be grouped in accordance with a number of factors or characteristics.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: April 27, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Diana Pani, Sylvie Gomes, Bhaskar M. Anepu, Paul Marinier
  • Publication number: 20210120539
    Abstract: A method and apparatus may be used to support coordinated and cooperative sectorized transmissions. Power control and clear channel assessment for sectorized transmissions may be used, along with sectorized beacon and associated procedures. Transmissions in a network may be protected by a first access point (AP) sending an omni-directional transmission and a beamformed or sectorized transmission to a station (STA), an overlapping basic service set (OBSS) confirming a spatially orthogonal (SO) condition based on the omni-directional transmission, and a second AP monitoring the omni-directional transmission and confirming the SO condition. The STA may be configured to receive a request-to-send (RTS) frame indicating data is available for transmission, and transmit a cooperative sectorized (CS) clear-to-send (CTS) frame indicating an ability for multiple AP reception.
    Type: Application
    Filed: December 29, 2020
    Publication date: April 22, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Monisha Ghosh, Robert L. Olesen
  • Publication number: 20210119677
    Abstract: A station (STA) may receive a wireless signal including a preamble of a packet. An energy level of the signal received may exceed a clear channel assessment (CCA) threshold. The STA may issue a primitive to stop reception of the packet. Further, the STA may return to a receive state based on the primitive. Additionally, the STA may determine, using a carrier sense multiple access (CSMA) protocol, to ignore a payload portion of the packet based on information contained in the preamble and adjust the CCA threshold to account for the payload portion of the packet. The STA may then access a wireless medium using the CSMA protocol during the payload portion of the packet using the adjusted CCA threshold. In a further example, the CCA threshold may be a received signal strength indicator (RSSI) level or a received channel power indicator (RCPI) level.
    Type: Application
    Filed: November 2, 2020
    Publication date: April 22, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Guodong Zhang, Hanqing Lou, Xiaofei Wang
  • Patent number: 10986517
    Abstract: A station (STA) may receive, in a trigger frame in a multi-user wireless local area network (WLAN), control information for one or more sub-bands of a bandwidth available for overlapping basic service set (OBSS) spatial reuse (OBSS SR) and a transmission power parameter for the one or more sub-bands. The STA may generate a physical (PHY) layer preamble including a signal field that includes an indication of the one or more sub-bands for SR and a power threshold for the SR.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: April 20, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Xiaofei Wang, Rui Yang, Guodong Zhang, Frank La Sita, Robert L. Olesen
  • Patent number: 10985826
    Abstract: Systems and methods for multidimensional beam refinement procedures and signaling for millimeter wave WLANs. In some embodiments, there are multi-dimensional enhanced beam refinement protocol MAC and PHY frame designs that extend the MAC packet and the PPDU format with or without backwards compatibility. The multiple dimensions may be supported jointly or separately. In other embodiments, the increased data signaled in the eBRP frame designs may be more efficiently signaled with reduced BRP frame sizes, such as through a training type dependent BRP minimum duration selection procedure or use of null data packet BRP frames. In further embodiments, the maximum duration of the interframe spacing between BPR packets may be varied to improve the efficiency of BRP operation.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: April 20, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Alphan Sahin, Rui Yang, Cen Lin, Xiaofei Wang, Li-Hsiang Sun
  • Patent number: 10986564
    Abstract: A method and apparatus are described. A method includes determining whether the apparatus is in a coverage enhancement (CE) mode or a non-CE mode. The method further includes receiving a CE-system information block (CE-SIB) on a physical downlink shared channel (PDSCH) based on at least one of a known location or at least one known parameter for the CE-SIB, on a condition that the WTRU is determined to be in the CE mode.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: April 20, 2021
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Samian Kaur, Diana Pani
  • Publication number: 20210112557
    Abstract: Systems and/or methods for supporting communications at a reduced bandwidth with a full bandwidth network such as a long-term evolution (LTE) network may be disclosed. For example, inband assignments such as downlink assignments and/or uplink grants may be provided and/or received and transmissions may be monitored and/or decoded based on the inband assignment. Additionally, information (e.g. a definition or configuration) associated with an ePDCCH may be provided and/or received and ePDCCH resources may be monitored and/or decoded based on such information. An indication for support of a reduced bandwidth by the full bandwidth network may also be provided and/or received and control channels in the reduced or narrow bandwidth may be monitored and/or decoded based on the indication. A PRACH preamble and/or a multi-type subframe definition may also be provided and/or used for support of such a reduced bandwidth.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Moon-il Lee, Marian Rudolf, Peter S. Wang, Shahrokh Nayeb Nazar, Janet A. Stern-Berkowitz, Pouriya Sadeghi, Allan Tsai, Sung-Hyuk Shin
  • Patent number: 10979183
    Abstract: A wireless transmit/receive unit (WTRU) communicating in a wireless local area network (WLAN) system may use efficient acknowledgement (ACK) setup and transmission procedures in conjunction with other transmission and power saving techniques, such as target wake time/restricted access window (TWT/RAW), power save multi-poll (PSMP) and/or transmission opportunity (TXOP) mechanisms. In an example, a WTRU may transmit a frame including an indication that a TWT/RAW (or TXOP) period is scheduled, an indication that multi-WTRU acknowledgement (ACK)/block ACK (BA) will be used for acknowledgement, and/or targeted transmission time(s) for the transmission of multi-WTRU ACK/BA frame(s). The WTRU may trigger the start of the TWT/RAW period, and may receive at least one data frame from another WTRU(s). The WTRU may transmit multi-WTRU ACK/BA frame(s) during the targeted transmission time(s) to acknowledge the at least one data frame received from the other WTRU(s).
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: April 13, 2021
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Guodong Zhang, Joseph S. Levy
  • Patent number: 10979116
    Abstract: Multiple channel transmission in mmW Wireless Local Area Network (WLAN) systems may be provided. Multi-channel aggregation and channel bonding may include, for example, multi-channel aggregation for a single transmitter/receiver pair or multi-channel aggregation and bonding for multiple transmitter/receiver pairs with frequency and space based multiple access. Multi-channel beamforming may include, for example, one analog beam across two channels and analog circuits on each channel or a single analog circuit on both channels, one analog beam across two channels and separate digital precoding schemes on each channel, one analog beam across a primary channel and separate digital precoding schemes on each channel or two analog beams on two channels and separate digital precoding on each channel. Preamble signaling may be provided.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: April 13, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Rui Yang, Li-Hsiang Sun
  • Patent number: 10973019
    Abstract: Methods and systems are disclosed for providing physical layer resources to a plurality of medium access control (MAC) instances that are associated with different serving sites that are independently scheduled. For example, a WTRU may utilize a first physical layer configuration for transmitting to a first serving site associated with a first MAC instance. The WTRU may utilize a second physical layer configuration for transmitting to a second serving site associated with a second MAC instance. The WTRU may prevent conflicts between transmission requests from the first MAC instance and transmission requests from the second MAC instance. For example, preventing the conflicts may include utilizing one or more of time segregation or frequency segregation for transmissions associated with the first MAC instance and transmissions associated with the second MAC instance.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: April 6, 2021
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Paul Marinier, J. Patrick Tooher, Ghyslain Pelletier, Diana Pani
  • Patent number: 10973051
    Abstract: Methods and apparatus for protection of multi-user (MU) transmission are described herein. An apparatus includes a receiver, a transmitter and a processor. The receiver and the processor detect a trigger frame for an uplink (UL) multi-user (MU) transmission. The processor and the transmitter generate and send a frame in response to the trigger frame and transmit channel availability information for a plurality of channels in response to the trigger frame. The receiver and the processor detect data in a resource unit (RU) of a downlink (DL) MU physical layer (PHY) protocol data unit (PPDU) on one of the plurality of channels. The one of the plurality of channels is based on the transmitted channel availability information.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: April 6, 2021
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Oghenekome Oteri, Li-Hsiang Sun, Xiaofei Wang, Rui Yang
  • Publication number: 20210099960
    Abstract: A method and apparatus for power control for wireless transmissions are disclosed. A wireless transmit/receive unit (WTRU) may reduce transmission power to channels for carrier aggregation such that a total transmit power of the WTRU is smaller than or equal to a maximum transmission power level in all symbols of a transmission. Further, transmission power may be allocated to the channels for carrier aggregation based on priority. Also, transmission power may be allocated to a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) with uplink control information over a PUSCH without uplink control information. Moreover, transmission power may be allocated to a PUCCH or a PUSCH over a sounding reference signal (SRS) transmission. Additionally, the WTRU may transmit data over one or more channels, of the channels for carrier aggregation, at the respective transmission power allocated to the one or more channels.
    Type: Application
    Filed: December 14, 2020
    Publication date: April 1, 2021
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: John W. Haim, Janet A. Stern-Berkowitz, Stephen E. Terry, Virgil Comsa
  • Patent number: 10966152
    Abstract: A method, a wireless transmit/receive unit (WTRU) and a base station for transferring small packets are described. The WTRU generates a packet that has one or more of a medium access control (MAC) or a physical layer convergence protocol (PLCP) header, the one or more of the MAC or the PLCP header including a field. On a condition that the WTRU has data buffered for transmission, the WTRU includes in the field information that indicates a time or a transmission opportunity (TXOP) needed to transmit at least one packet of data that the WTRU has buffered for transmission. The WTRU transmits the packet to another WTRU in the wireless network. The WTRU receives another packet from the other WTRU with a granted TXO) based on the time needed to transmit the at least one packet of the data that the WTRU has buffered for transmission.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: March 30, 2021
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Guodong Zhang
  • Patent number: 10958409
    Abstract: A method performed by a HD-WTRU may comprise determining that an uplink SR and/or a PRACH preamble overlaps in time with one or more subframes of a scheduled downlink shared channel transmission. When the overlap occurs, the HD-WTRU may receive the downlink shared channel transmission on the one or more subframes. The HD-WTRU may process the downlink shared channel transmission, not transmit the SR and not transmit the PRACH preamble.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: March 23, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Moon-il Lee, Janet A. Stern-Berkowitz, Virgil Comsa
  • Patent number: 10959155
    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.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: March 23, 2021
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Gwenael Poitau, Ghyslain Pelletier, Paul Marinier, Diana Pani, Samian Kaur, Benoit Pelletier
  • Publication number: 20210084635
    Abstract: A method, apparatus, and system for beamforming training using a wireless transmit receive unit (WTRU). A WTRU may receive an indication of a number of space time slots (STSs) from an access point (AP) within a beacon frame during a beamforming training allocation. The WTRU may send a response signal to the AP in a specific STS based on a function of the number of STSs. The WTRU may receive an acknowledgement (ACK) from the AP confirming the response was received. Alternatively, the AP may send a signal indicating that a collision occurred and alter the number of STSs, and the WTRU may try again in the next beamforming training allocation.
    Type: Application
    Filed: March 12, 2018
    Publication date: March 18, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Oghenekome Oteri, Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun, Rui Yang
  • Publication number: 20210084482
    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.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Gwenael Poitau, Ghyslain Pelletier, Marian Rudolf, Benoit Pelletier, Paul Marinier, Diana Pani
  • Patent number: 10945302
    Abstract: Circuit switched fallback (CSFB) requests may be managed. A mobile management entity (MME) can detect one or more pending CSFB requests. In response to detecting the pending CSFB request(s), the MME can generate a message that indicates the one or more pending CSFB requests, and can communicate the message to one of a mobile switching center (MSC) and a virtual location register (VLR).
    Type: Grant
    Filed: March 26, 2011
    Date of Patent: March 9, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: J. Patrick Tooher, Mahmoud Watfa, Behrouz Aghili, Ulises Olvera-Hernandez, Pascal Adjakple
  • Publication number: 20210065566
    Abstract: An unmanned aerial vehicle (UAV) may detect a risk of collision with one or more objects in an airspace serviced by a mobile edge computing (MEC) node. The MEC node may provide an edge detect and avoid (edge-DAA) function for use in the airspace. The UAV may determine a first resolution advisory (RA) to be acted on in order to avoid the collision with the one or more objects based on a local DAA function within the UAV. The UAV may receive, from the MEC node, a second RA to be acted on in order to avoid the collision with the one or more objects based on the edge-DAA function. If the second RA can be acted onto avoid the collision with the one or more objects, the UAV may act on the second RA and may send a message to the MEC node with an acknowledgement.
    Type: Application
    Filed: January 29, 2019
    Publication date: March 4, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Jun Li, James Cistone, Ravikumar V. Pragada, Nagi Mahalingam, Michel Roy