Patents by Inventor Nirav B. Shah

Nirav B. Shah has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210289448
    Abstract: Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.
    Type: Application
    Filed: June 1, 2021
    Publication date: September 16, 2021
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Pengfei Xia, Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Robert L. Olesen, Nirav B. Shah, Frank La Sita
  • Publication number: 20210243628
    Abstract: Device, systems, and/or techniques for using sub-channel signaling information between an access point and a first station are disclosed. An uplink trigger sent from the access point to the first station may be received. A map may be transmitted from the first station indicating at least one sub-channel that is available for spatial sharing by a second station. The first station may receive an acknowledgement from the access point that data was transmitted from the second station on the at least one sub-channel and/or received by the at least one access point. An OFDMA transmission having a sub-channel/sub-band available for transmitting data may be determined. An energy in the sub-channel/sub-band may be measured and/or compared to a dynamic and/or static threshold. Whether a sub-channel/sub-band is free or busy may be determined for example based on if the measured energy is, or is not, greater than the threshold.
    Type: Application
    Filed: April 20, 2021
    Publication date: August 5, 2021
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Xiaofei Wang, Rui Yang, Guodong Zhang, Frank La Sita, Robert L. Olesen
  • Publication number: 20210204254
    Abstract: A method and apparatus may be configured to support coordinated orthogonal block-based resource allocation (COBRA) operations. An access point (AP) may be configured to indicate to a plurality of stations (STA)s that it may support COBRA. Each WTRU may be configured to indicate to the AP that it can support COBRA as well. The AP may be configured to transmit a COBRA controller information element (IE) comprising a plurality of fields to each of the WTRUs. Each WTRU may be configured to transmit a COBRA controllee IE comprising a plurality of fields. STA grouping management, group maintenance, channel access, beamforming, sounding and frequency and synchronization procedures are also described.
    Type: Application
    Filed: February 22, 2021
    Publication date: July 1, 2021
    Applicant: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Ronald G. Murias, Xiaofei Wang, Nirav B. Shah, Monisha Ghosh, Guodong Zhang, Frank La Sita, Robert L. Olesen
  • Patent number: 11026187
    Abstract: Methods and apparatuses are described herein for determining a transmit power based on clear channel assessment (CCA) thresholds. A station (STA) associated with a first Basic Service Set (BSS) may receive, from an access point (AP) associated with the first BSS, a clear channel assessment (CCA) value for a group of STAs associated with a second BSS. The CCA value may indicate a minimum CCA threshold for a packet received from the second BSS. The STA may then determine, based on the CCA value, a STA specific CCA parameter and a target CCA parameter. The target CCA parameter may be greater than or equal to the STA specific CCA parameter. Based on the STA specific CCA parameter and the target CCA parameter, the STA may determine a target transmit power control (TPC) parameter of the STA, wherein the sum of target TPC parameter and target CCA parameter is constant.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: June 1, 2021
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Pengfei Xia, Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Robert L Olesen, Nirav B. Shah, Frank La Sita
  • 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
  • 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
  • Publication number: 20210058101
    Abstract: A wireless transmit/receive unit (WTRU) may receive a constellation symbol that includes indications that each are associated with a respective WTRU of a plurality of WTRUs. The WTRU may determine that a first weight associated with a first indication of the indications is different than a second weight associated with a second indication of the indications. The indications may comprise indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).
    Type: Application
    Filed: November 10, 2020
    Publication date: February 25, 2021
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Yuan Sheng Jin, Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Robert L. Olesen
  • Patent number: 10932229
    Abstract: A method and apparatus may be configured to support coordinated orthogonal block-based resource allocation (COBRA) operations. An access point (AP) may be configured to indicate to a plurality of stations (STA)s that it may support COBRA. Each WTRU may be configured to indicate to the AP that it can support COBRA as well. The AP may be configured to transmit a COBRA controller information element (IE) comprising a plurality of fields to each of the WTRUs. Each WTRU may be configured to transmit a COBRA controllee IE comprising a plurality of fields. STA grouping management, group maintenance, channel access, beamforming, sounding and frequency and synchronization procedures are also described.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 23, 2021
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Hanqing Lou, Ronald G. Murias, Xiaofei Wang, Nirav B. Shah, Monisha Ghosh, Guodong Zhang, Frank La Sita, Robert L. Olesen
  • Patent number: 10880894
    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: Grant
    Filed: February 7, 2018
    Date of Patent: December 29, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Monisha Ghosh, Robert L. Olesen
  • Publication number: 20200366413
    Abstract: A method may comprise transmitting a first signal derived from a first subset of a set of LDPC coded bits and transmitting a second signal derived from a second subset of the set of LDPC coded bits. The second subset may be selected from the set of LDPC coded bits based on a lifting size of an LDPC base graph. The method may further comprise receiving an indication of a first redundancy version. The transmitting the first signal may be in response to receiving the indication of the first redundancy version.
    Type: Application
    Filed: August 7, 2020
    Publication date: November 19, 2020
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Chunxuan Ye, Nirav B. Shah, Fengjun Xi, Kyle Jung-Lin Pan
  • Publication number: 20200367286
    Abstract: Systems, methods, and instrumentalities are described to implement an interference management method in WLAN. An access point (AP) or an inter-BSS coordinator (IBC) may identify a station (STA) associated with a first basic service set (BSS) as an edge STA or a non-edge STA. The AP or the IBC may group the edge STA into an edge group and a non-edge STA into a non-edge group. The AP or the IBC may receive information associated with a second BSS. The AP or the IBC may coordinate access of the edge group and/or the non-edge group. The access may be coordinated to minimize interference of the edge STA. The access may be based at least on the received information associated with the second BSS. The AP or the IBC may adjust transmit power of a plurality of STAs identified as edge group STAs and non-edge group STAs.
    Type: Application
    Filed: June 8, 2020
    Publication date: November 19, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Hanqing Lou, Monisha Ghosh, Robert L. Olesen, Frank La Sita, Xiaofei Wang, Pengfei Xia, Nirav B. Shah
  • Patent number: 10833712
    Abstract: A wireless transmit/receive unit (WTRU) may receive a constellation symbol that includes indications that each are associated with a respective WTRU of a plurality of WTRUs. The WTRU may determine that a first weight associated with a first indication of the indications is different than a second weight associated with a second indication of the indications. The indications may comprise indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: November 10, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Yuan Sheng Jin, Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Robert L. Olesen
  • Patent number: 10826539
    Abstract: Communication devices, systems and methods for performing multi-layer packet coding (MLPC) in a wireless system are provided. The MLPC includes segmenting a data stream into a plurality of data segments, encoding each of the plurality of data segments into a plurality of forward error correction (FEC) codewords, performing a first exclusive OR (XOR) operation on the plurality of FEC codewords to generate a plurality of first layer parity codewords, performing a second XOR operation on the plurality of first layer parity codewords to generate at least one second layer parity codeword, and transmitting at least one of: the plurality of FEC codewords, the plurality of first layer parity codewords, or the at least one second layer parity codeword.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: November 3, 2020
    Assignee: IDAC Holdings, Inc.
    Inventors: Fengjun Xi, Chunxuan Ye, Kyle Jung-Lin Pan, Hanqing Lou, Nirav B. Shah
  • Patent number: 10790934
    Abstract: A method (2200) and apparatus for transmitting data using low density parity check, LDPC, encoding and hybrid automatic repeat request-incremental redundancy, HARQ-IR, is disclosed. The method may comprise selecting (2206) a protograph sub-matrix from a family of protograph matrices based on one or more of an initial code rate, an information block size, a maximum retransmission count or a maximum number of redundancy versions, wherein the selected protograph sub-matrix supports HARQ-IR. A parity check matrix may be determined based on the selected protograph sub-matrix (2208). One or more data blocks may be encoded using LDPC based on the parity check matrix (2218) and the LDPC encoded data block may be transmitted (2220) to an LDPC HARQ-IR configured receiver.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: September 29, 2020
    Assignee: IDAC Holdings, Inc.
    Inventors: Chunxuan Ye, Nirav B. Shah, Fengjun Xi, Kyle Jung-Lin Pan
  • Publication number: 20200221388
    Abstract: Methods and apparatuses are described herein for determining a transmit power based on clear channel assessment (CCA) thresholds. A station (STA) associated with a first Basic Service Set (BSS) may receive, from an access point (AP) associated with the first BSS, a clear channel assessment (CCA) value for a group of STAs associated with a second BSS. The CCA value may indicate a minimum CCA threshold for a packet received from the second BSS. The STA may then determine, based on the CCA value, a STA specific CCA parameter and a target CCA parameter. The target CCA parameter may be greater than or equal to the STA specific CCA parameter. Based on the STA specific CCA parameter and the target CCA parameter, the STA may determine a target transmit power control (TPC) parameter of the STA, wherein the sum of target TPC parameter and target CCA parameter is constant.
    Type: Application
    Filed: March 17, 2020
    Publication date: July 9, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Pengfei Xia, Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Robert L. Olesen, Nirav B. Shah, Frank La Sita
  • Patent number: 10681734
    Abstract: Systems, methods, and instrumentalities are described to implement an interference management method in a WLAN. An access point (AP) or an inter-BSS coordinator (IBC) may identify a station (STA) associated with a first basic service set (BSS) as an edge STA or a non-edge STA The AP or the IBC may group the edge STA into an edge group and a non-edge STA into a non-edge group. The AP or the IBC may receive information associated with a second BSS. The AP or the IBC may coordinate access of the edge group and/or the non-edge group. The access may be coordinated to minimize interference of the edge STA. The access may be based at least on the received information associated with the second BSS The AP or the IBC may adjust transmit power of a plurality of STAs identified as edge group STAs and non-edge group STAs.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: June 9, 2020
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Oghenekome Oteri, Hanqing Lou, Monisha Ghosh, Robert L. Olesen, Frank La Sita, Xiaofei Wang, Pengfei Xia, Nirav B. Shah
  • Publication number: 20200163099
    Abstract: Methods and apparatuses are related to multi-user parallel channel access (MU-PCA). For example, a wireless transmit/receive unit (WTRU) is provided that is one of the plurality of WTRUs operable to simultaneously communicate via a plurality of channels managed by an access point (AP). The WTRU includes a receiver configured to receive, from the AP, over at least one channel of the plurality of channels, a group poll (G-Poll) message that includes a resource allocation that indicates at least one allocated channel of the plurality of channels for the WTRU; and a transmitter configured to transmit an uplink request message, to the AP in response to the G-Poll message, over the at least one allocated channel of the plurality of channels, the uplink request message corresponding to uplink data the WTRU has for transmission to the AP.
    Type: Application
    Filed: January 20, 2020
    Publication date: May 21, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B. Shah, Guodong Zhang, Ronald Murias
  • Patent number: 10631252
    Abstract: Methods and apparatuses are described herein for determining a transmit power based on clear channel assessment (CCA) thresholds. A station (STA) associated with a first Basic Service Set (BSS) may receive, from an access point (AP) associated with the first BSS, a clear channel assessment (CCA) value for a group of STAs associated with a second BSS. The CCA value may indicate a minimum CCA threshold for a packet received from the second BSS. The STA may then determine, based on the CCA value, a STA specific CCA parameter and a target CCA parameter. The target CCA parameter may be greater than or equal to the STA specific CCA parameter. Based on the STA specific CCA parameter and the target CCA parameter, the STA may determine a target transmit power control (TPC) parameter of the STA, wherein the sum of target TPC parameter and target CCA parameter is constant.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: April 21, 2020
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Pengfei Xia, Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Robert L Olesen, Nirav B. Shah, Frank La Sita
  • Publication number: 20200119859
    Abstract: Systems, methods, and instrumentalities are provided to implement a method of communicating a feedback in a wireless local area network (WLAN). A WLAN device may receive a data frame with a hybrid automatic repeat request (HARQ) data indicator in a frame header. The WLAN device may send an acknowledgement frame when the data frame is correctly received and decoded. The WLAN device may send a negative acknowledgement frame when the data frame is not correctly received and decoded.
    Type: Application
    Filed: December 13, 2019
    Publication date: April 16, 2020
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Guodong Zhang, Robert L. Olesen, Hanqing Lou, Monisha Ghosh, Pengfei Xia, Nirav B. Shah, Oghenekome Oteri
  • Publication number: 20200053781
    Abstract: Methods, systems, and apparatuses for use in wireless communication are disclosed. A method of communication on an unlicensed band may include detecting a Synchronization Signal/Physical Broadcast Channel (SS/PBCH) block comprising a demodulation references signal (DMRS), a synchronization signal (SS), and a PBCH payload. A SS/PBCH block index may be obtained from one of the DMRS and the PBCH payload. A cyclic rotation indicator may be obtained from the SS/PBCH block (e.g., from the DMRS, the SS, and/or the PBCH payload). A determination may be made that the cyclic rotation indicator indicates an on state and a time gap may be obtained from one of the DMRS and the PBCH payload, based on the determination. Frame timing may be determined based on the cyclic rotation indicator, the SS/PBCH block index, and the time gap.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 13, 2020
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Kyle Jung-Lin Pan, Nirav B. Shah, Fengjun Xi, Chunxuan Ye