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: 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
  • Patent number: 10542555
    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 a 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: Grant
    Filed: March 11, 2019
    Date of Patent: January 21, 2020
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B Shah, Guodong Zhang, Ronald Murias
  • Patent number: 10536196
    Abstract: Systems, methods, and instrumentalities are disclosed for multiple resource unit (RU) allocation for OFDMA WLAN. A transmitter may parse an encoded bit stream into a plurality of spatial streams. The transmitter may determine an allocation of encoded bits of the plurality of spatial streams to a plurality of interleavers. The transmitter may allocate the encoded bits to the plurality of interleavers based on the determined allocation. The allocation of the encoded bits may be determined based on one or more of channel related feedback, an RU configuration associated with the transmission, a quality of service (QoS), and/or traffic priorities. The transmitter may interleave the encoded bits using the plurality of interleavers. The transmitter may combine the interleaved encoded bits from the plurality of interleavers into a sequenced bit stream.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: January 14, 2020
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Chunhua Geng, Fengjun Xi, Alphan Sahin, Rui Yang, Oghenekome Oteri, Nirav B. Shah, Robert L. Olesen, Frank La Sita
  • Publication number: 20190393972
    Abstract: Systems, procedures, and instrumentalities are disclosed for synchronizing a signal burst, signal design, and/or system frame acquisition. A synchronization signal (SS) block or burst may be received. The SS block or burst may include a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and/or a Physical Broadcast Channel (PBCH). A first cell ID may be determined and/or a plurality of SSS sequences may be generated. An m0 value (e.g., a first cyclic shift) may be determined from a set of m0 values, for example, based on the generated plurality of SSS sequences. An n1 value (e.g., a second cyclic shift) may be determined from a set of n1 values. A second cell ID may be determined, for example, based on the m0 value and the n1 value. A third cell ID may be determined, for example, based on the second cell ID and the first cell ID.
    Type: Application
    Filed: February 2, 2018
    Publication date: December 26, 2019
    Applicant: IDAC Holdings, Inc.
    Inventors: Kyle Jung-Lin Pan, Fengjun Xi, Robert L. Olesen, Nirav B. Shah
  • Publication number: 20190357159
    Abstract: A method and apparatus are disclosed for demodulating a NR-PBCH signal. The method may comprise receiving a primary SS and an SSS. The received SSS signal may be used as a reference signal to detect demodulation reference signals of the NR-PBCH. These demodulation reference signals may be interleaved with data on the NR-PBCH. In one method, the NR-PBCH DMRS are associated with an SSB index in an effort to improve randomization in the synchronization process. The NR-PBCH payload may be demodulated using the PSS and/or SSS and the DMRS. In one embodiment, the NR-PBCH DMRS may mapped to DMRS REs on a frequency first and time second mapping basis.
    Type: Application
    Filed: January 26, 2018
    Publication date: November 21, 2019
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Kyle Jung-Lin Pan, Fengjun Xi, Steven Ferrante, Chunxuan Ye, Janet A. Stern-Berkowitz, Nirav B. Shah
  • Publication number: 20190313284
    Abstract: Mechanisms may be used for aggregating acknowledgement (ACK), block ACK (BA) and/or short packets transmissions for multi-user (MU) wireless communication systems. Aggregation mechanisms may be used for uplink (UL) and/or downlink (DL) orthogonal frequency division multiple access (OFDMA), and/or UL/DL multiple-user multiple input multiple output (MU-MIMO) transmissions, for example. Multi-user short packets may be aggregated and/or simultaneously transmitted for DL, UL, or peer-to-peer (P2P) transmissions.
    Type: Application
    Filed: June 24, 2019
    Publication date: October 10, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Hanqing Lou, Oghenekome Oteri, Nirav B. Shah, Robert L. Olesen, Yuan Sheng Jin, Pengfei Xia, Frank La Sita, Guodong Zhang
  • Publication number: 20190273520
    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: May 17, 2019
    Publication date: September 5, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Yuan Sheng Jin, Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Robert L. Olesen
  • Publication number: 20190261385
    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 a 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: March 11, 2019
    Publication date: August 22, 2019
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B Shah, Guodong Zhang, Ronald Murias
  • Publication number: 20190207710
    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: Application
    Filed: August 10, 2017
    Publication date: July 4, 2019
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Chunxuan Ye, Nirav B. Shah, Fengjun Xi, Kyle Jung-Lin Pan
  • Patent number: 10334475
    Abstract: Mechanisms may be used for aggregating acknowledgement (ACK), block ACK (BA) and/or short packets transmissions for multi-user (MU) wireless communication systems. Aggregation mechanisms may be used for uplink (UL) and/or downlink (DL) orthogonal frequency division multiple access (OFDMA), and/or UL/DL multiple-user multiple input multiple output (MU-MIMO) transmissions, for example. Multi-user short packets may be aggregated and/or simultaneously transmitted for DL, UL, or peer-to-peer (P2P) transmissions.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: June 25, 2019
    Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
    Inventors: Fengjun Xi, Hanqing Lou, Oghenekome Oteri, Nirav B. Shah, Robert L. Olesen, Yuan Sheng Jin, Pengfei Xia, Frank La Sita, Guodong Zhang
  • Publication number: 20190181983
    Abstract: Systems, methods, and instrumentalities may be disclosed for polar coding. For example, a wireless transmit/receive unit (WTRU) may identify a coding rate and/or an information block length. The WTRU may determine a codeword length, for example, based on the coding rate and/or the information block length. The WTRU may identify a channel condition and/or decoding error statistics. The WTRU may determine a polar code construction type, for example, based on the channel condition and/or the decoding error statistics. The WTRU may determine a design signal to noise ratio (SNR) based on the channel condition and/or the decoding error statistics. The WTRU may determine a polar code based on the information block length, the codeword length, the polar code construction type, and/or the design SNR. The WTRU may encode source bits based on the polar code.
    Type: Application
    Filed: August 10, 2017
    Publication date: June 13, 2019
    Inventors: Chunxuan Ye, Fengjun Xi, Kyle Jung-Lin Pan, Nirav B Shah
  • Publication number: 20190182778
    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: February 13, 2019
    Publication date: June 13, 2019
    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: 10312950
    Abstract: Methods, systems, and apparatuses are disclosed for transmitting a plurality of bits to an access point (AP) and receiving constellation symbol from the AP. A constellation symbol may include a plurality of indications of bits. Each indication of the plurality of indications of bits may be associated with a respective wireless transmit/receive unit (WTRU) of a plurality of WTRUs. The plurality of indications of bits may include indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: June 4, 2019
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Yuan Sheng Jin, Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Robert L. Olesen
  • Publication number: 20190150117
    Abstract: Modulating millimeter waves may be embodied via a plurality of means. In at least one embodiment of the process disclosed herein, the process includes receiving, at a transmitter, a set of bits. The process also includes generating at least two complex-valued symbols based on the set of bits using a pipelined modulation at least in part by (i) mapping the set of bits to a first symbol using a first constellation mapping and (ii) mapping the set of bits to a second symbol using a second constellation mapping. The process also includes selecting a first data communication resource in a first single carrier channel for the first symbol and selecting a second data communication resource in a second single carrier channel for the second symbol. The process also includes transmitting, via the transmitter, the first and second symbols using the respective selected data communication resources.
    Type: Application
    Filed: May 11, 2017
    Publication date: May 16, 2019
    Inventors: Hanqing Lou, Rui Yang, Fengjun Xi, Nirav B Shah
  • Publication number: 20190140784
    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: Application
    Filed: May 9, 2017
    Publication date: May 9, 2019
    Applicant: IDAC HOLDINGS, INC.
    Inventors: Fengjun Xi, Chunxuan Ye, Kyle Jung-Lin Pan, Hanqing Lou, Nirav B. Shah