Patents by Inventor Lochan VERMA

Lochan VERMA 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).

  • Patent number: 10863456
    Abstract: Methods and apparatuses are disclosed for communicating over a wireless communication network. One such apparatus can include a memory that stores instructions and a processor coupled with the memory. The processor and the memory can be configured to identify a transmission mode for a transmission of a signal; select a tone plan for transmission of the signal within a 320 MHz total channel bandwidth or a 240 MHz total channel bandwidth, where the tone plan includes a 256 point tone plan, 512 point tone plan, 1024 point tone plane, 2048 point tone plan, 4096 point tone plan, or some combination thereof, and where the tone plan is selected based at least in part on the transmission mode; generate the signal according to the tone plan; and transmit the signal over the 320 MHz total channel bandwidth or over the 240 MHz total channel bandwidth.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: December 8, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jialing Li Chen, Bin Tian, Lin Yang, Sameer Vermani, Lochan Verma
  • Patent number: 10856222
    Abstract: This disclosure provides systems, methods and apparatuses for indicating a data rate of a packet. The transmitting device may select the data rate of a data field of the packet to be transmitted to the receiving device, and may select a pattern to embed within a preamble of the packet based on the selected data rate. In some implementations, the transmitting device may select a first structure including a first number of instances of a sequence or its logical complement if the selected data rate is a low data rate, and may select a second structure including a second number of instances of the sequence or its logical complement if the selected data rate is a high data rate.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: December 1, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Stephen Jay Shellhammer, Bin Tian, Lochan Verma
  • Patent number: 10856311
    Abstract: Methods and apparatuses are disclosed for communicating over a wireless communication network. In one aspect, an apparatus can include a memory that stores instructions, a processor, and a segment parser. The memory can be configured to store instructions. The processing system is configured to execute the instructions to generate a message according to a tone plan for transmission to one or more destination devices within one of a 240 or 320 MHz total channel bandwidth. The processing system is further configured to provide the message for transmission over the 240 or 320 MHz total channel bandwidth, where the message is encoded for transmission by at least one of a binary convolutional coded (BCC) interleaver or a low density parity check (LDDC) tone mapper. The segment parser is configured to segment the total channel bandwidth into a plurality of segments of equal or unequal sub-band bandwidths or number of data tones.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: December 1, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jialing Li Chen, Lin Yang, Bin Tian, Sameer Vermani, Lochan Verma
  • Patent number: 10856244
    Abstract: This disclosure provides systems, methods, apparatus, including computer programs encoded on computer storage media for orthogonal multiplexing of high efficiency (HE) and extremely high throughput (EHT) wireless traffic. Devices in a wireless local area network (WLAN) may operate under HE or EHT conditions. An access point (AP) may support both HE and EHT communications with WLAN devices. To enable substantially simultaneous downlink HE and EHT transmissions and substantially simultaneous uplink HE and EHT transmissions, the AP may support orthogonal frequency-division multiple access (OFDMA) of HE and EHT transmissions. For example, pre-HE and pre-EHT modulated fields, HE and EHT modulated fields, and payloads may be aligned in time for the HE and EHT transmissions. The AP may ensure orthogonality for multiplexing the HE and EHT transmissions based on the alignment. In some implementations, a trigger frame may be utilized to indicate uplink transmission alignments.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: December 1, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Bin Tian, Sameer Vermani, Lin Yang
  • Publication number: 20200374062
    Abstract: This disclosure provides systems, methods and apparatuses for wireless communications. In some implementations, a first access point (AP) may identify other APs to participate in a coordinated access point transmission session, may obtain a transmit opportunity (TXOP) for transmitting wireless signals over a frequency bandwidth, may allocate corresponding portions of the frequency bandwidth to the identified APs for downlink (DL) transmissions during the TXOP, may select a duration of the TXOP for the coordinated access point transmission session based at least in part on an amount or percentage of the first AP's frequency bandwidth that is allocated to the one or more identified APs for the coordinated access point transmission session, and may output information indicative of at least one of the selected TXOP duration or the corresponding portions of the frequency bandwidth allocated to the respective identified AP by the first AP.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 26, 2020
    Inventors: Lochan Verma, George Cherian, Alfred Asterjadhi, Abhishek Pramod Patil, Sai Yiu Duncan Ho
  • Patent number: 10848233
    Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for managing high volumes of space-time-streams in Wi-Fi systems. An access point (AP) may transmit packets including long training field (LTF) sections using a number of space-time-streams greater than eight. Mobile stations (STAs) in the system may or may not be capable of processing this number of streams. The AP may modulate an LTF section using a matrix with dimensions smaller than the number of streams by using tone-interleaving or by performing modulation with separate matrices in time and frequency. In some other implementations, the AP may split the antennas for transmission into groups, each group transmitting either different packets in a subset of streams or a same packet in a subset of tones. In further implementations, the AP may combine multiple space-time-streams into a super stream that supports reception at different types of STAs.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: November 24, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Sameer Vermani, Bin Tian, Jialing Li Chen, Lin Yang, Lochan Verma
  • Publication number: 20200359259
    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for multi-link aggregation in wireless communications. In one aspect, an apparatus includes a multi-link operation device configured to generate and output for transmission a message indicating a mapping of each of a plurality of traffic identifiers (TIDs) to one or more parameters associated with each of a plurality of wireless links. In some aspects, another apparatus may obtain a message via at least one of a plurality of wireless links indicating a mapping of each of a plurality of TIDs to one or more parameters associated with each the plurality of wireless links, obtain a sequence of packets associated with at least one of the plurality of TIDs via one or more of the plurality of wireless links, and process the sequence of packets based on the mapping indicated via the message.
    Type: Application
    Filed: May 7, 2020
    Publication date: November 12, 2020
    Inventors: Abhishek Pramod PATIL, George CHERIAN, Sai Yiu Duncan HO, Alfred ASTERJADHI, Lochan VERMA
  • Patent number: 10827385
    Abstract: The present disclosure provides techniques for preamble puncturing in wireless local area networks (WLANs). In one implementation, an access point (AP) can identify, within a channel width, one or more bandwidth regions associated with incumbent technologies. The AP can broadcast or advertise, to a basic service set (BSS) initiated or started by the AP, a preamble puncture pattern in one or more management frames, the preamble puncture pattern being based on the bandwidth regions associated with incumbent technologies. In another implementation, an AP can identify a single user (SU) preamble puncture transmission, and can signal in a common portion of a SIG-B field of a multi-user (MU) PPDU format that a resource unit (RU) size is assigned to a same user to indicate the SU preamble puncture transmission. Although these techniques may be used in any frequency band, typical frequency bands may include, but are not limited to, a 2.4 GHz band, a 5 GHz band, and/or a 6 GHz band.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 3, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Bin Tian, Lin Yang, Jialing Li Chen, Sameer Vermani, Youhan Kim
  • Patent number: 10813049
    Abstract: A method and an apparatus for wireless communication are provided. In one configuration, an apparatus is configured to transmit a wake-up radio (WUR) signal, to determine to transmit a second signal within a SIFS after transmitting the WUR signal to increase medium reuse, and to transmit the second signal within the SIFS after transmitting the WUR signal based on the determination. The second signal may be a data, management, control, ACK, or CF-end frame to enable legacy devices that do not decode the WUR signal to avoid wasted airtime cause by EIFS after the WUR signal. In another configuration, the apparatus is configured to transmit a CTS-to-self frame, to determine to transmit a second signal within a SIFS after transmitting the CTS-to-self frame, and to transmit the second signal based on the determination. The second signal may be a WUR signal or an intermediate signal followed by a WUR signal.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: October 20, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Yanjun Sun, Alfred Asterjadhi, Bin Tian, George Cherian, Stephen Jay Shellhammer, Lochan Verma
  • Patent number: 10785706
    Abstract: Systems, devices, apparatus and methods, including computer programs encoded on storage media, are disclosed for an access point (AP) in a basic service set (BSS) to advertise or indicate 320 MHz bandwidth operation and frequency segment composition in the 320 MHz bandwidth to one or more stations (STAs) in a Wireless Local Area Network (WLAN). Also, a WLAN device may advertise or indicate its 320 MHz bandwidth support capability to other WLAN devices in the WLAN.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: September 22, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Bin Tian, Sameer Vermani, Lin Yang, Jialing Li Chen
  • Publication number: 20200288523
    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for improved handling of adjacent channel interference in multi-link aggregation scenarios. In accordance with the described techniques, a device may establish a set of wireless links for communication with a second device, the set of wireless links supporting parallel transmission during at least a first duration of a multi-link session, the set of wireless links including at least a first wireless link and a second wireless link. The device may modify a transmission parameter for the first wireless link or a clear channel assessment (CCA) parameter for the second wireless link, or a combination thereof. The device may then perform the CCA procedure on the second wireless link and transmit at least a first portion of the message on the first wireless link based on the modified transmission parameter or modified CCA parameter.
    Type: Application
    Filed: March 4, 2020
    Publication date: September 10, 2020
    Inventors: Abhishek Pramod Patil, George Cherian, Alfred Asterjadhi, Lochan Verma
  • Patent number: 10772099
    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for partial bandwidth feedback based on punctured sounding. Punctured sounding is used by a transmitting device that omits portions of a channel bandwidth based on a puncturing pattern. The puncturing pattern may be based on an exclusion bandwidth zone to avoid transmissions on portions of channels that may interfere with an incumbent system transmission. The puncturing pattern may be indicated in a null data packet announcement (NDPA) to inform the receiving device that a subsequent NDP will be punctured. The receiving device may determine the feedback by measuring the portions of the NDP that are not punctured. Beamforming may be enhanced by using punctured sounding between two beamforming endpoints.
    Type: Grant
    Filed: February 14, 2019
    Date of Patent: September 8, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Bin Tian, Sameer Vermani, Lin Yang, Jialing Li Chen, Youhan Kim
  • Patent number: 10764877
    Abstract: The present disclosure provides various aspects related to techniques for generating trigger frames, at an AP, that reduce the overhead associated with triggering an uplink transmission from the STA. In some examples, the STA may also calculate its transmit power by decoding a spatial reuse subfield of the trigger frame from the AP and identifying downlink pathloss measurements of the trigger frame. Accordingly, the STA may identify acceptable interference level of the AP and calculate a transmit power in order to minimize interference at the AP. In some aspects, the STA may transmit its uplink packets to a different AP on one or more punctured channels at the calculated transmit power of the STA.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: September 1, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Sameer Vermani, Bin Tian, Lin Yang, Raja Banerjea, Alfred Asterjadhi
  • Patent number: 10728861
    Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may identify a transmission mode for transmission of an input signal to be transmitted. The input signal may thus be modulated according to the identified transmission mode, and the modulated signal may then be transmitted at some power level to produce a transmitted signal having a spectral envelope. In some cases, the spectral envelope may be defined in terms of a power spectral density (PSD) of the transmitted waveform. The PSD may generally define the power of the waveform signal distributed over frequencies of the waveform. Further, the wireless device may control the modulation of the input signal, in addition to the power level of the input signal, to maintain the spectral envelope to be within a spectral mask defined for the implemented transmission mode as well as to conform to spectral flatness parameters.
    Type: Grant
    Filed: October 8, 2018
    Date of Patent: July 28, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Jialing Li Chen, Lin Yang, Bin Tian, Sameer Vermani, Lochan Verma
  • Publication number: 20200213933
    Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for high efficiency (HE) beacons. HE supported access points (APs) and stations (STAs) may operate on resource deployments used for Wi-Fi technology and without support for legacy devices, also referred to as a greenfield deployment. An AP may identify updated capability information and transmit a HE physical layer convergence protocol (PLCP) protocol data unit (PPDU) including a beacon frame. A STA may receive, from the AP, the HE or EHT PPDU and identify an indication of change to a content or format of the beacon frame relative to a reference beacon frame. Based on the identified indication, the STA may then determine an updated content or format for the beacon frame and process the beacon frame or skip processing for one or more portions of the beacon frame.
    Type: Application
    Filed: December 9, 2019
    Publication date: July 2, 2020
    Inventors: Abhishek Pramod Patil, George Cherian, Alfred Asterjadhi, Sandip Hom Chaudhuri, Maarten Menzo Wentink, Alireza Raissinia, Lochan Verma, Padmanabhan Venkataraman Karthic
  • Publication number: 20200127681
    Abstract: In some aspects, methods and apparatus for wireless communications are configured to generate a packet for wireless communication where the packet includes a mark symbol in a preamble of the packet where the mark symbol includes a signature or stamp field in the mark to provide protocol information that indicates the protocol of the packet, such as an 802.11 EHT packet. In some other aspects, a cyclic redundancy check field in the mark symbol may be manipulated in various ways to indicate the protocol of the packet in lieu of providing the signature or stamp field.
    Type: Application
    Filed: October 21, 2019
    Publication date: April 23, 2020
    Inventors: Lochan VERMA, Bin TIAN, Sameer VERMANI, Lin YANG, Jialing Li CHEN
  • Publication number: 20200112408
    Abstract: Methods, systems, and devices for wireless communications are described for control signaling in next generation wireless local area network (WLAN) environments. A message transmitted by an access point may allocate resources to a plurality of stations. The access point may be configured to allocate up to 320 MHz of total bandwidth along with coarse punctures. The access point may also allocate up to eight space-time streams to each station in a multi-user multiple-input multiple output (MU-MIMO) transmission, and support simultaneous transmission to up to sixteen stations. To support 320 MHz bandwidth and up to sixteen stations, one or more signaling fields used in other environments may be repurposed to effectively signal the additional resources available in a next generation WLAN.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 9, 2020
    Inventors: Lochan Verma, Bin Tian, Sameer Vermani, Youhan Kim, Lin Yang
  • Publication number: 20200112350
    Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for null data packet (NDP) based implicit sounding and calibration for a wireless local area network (WLAN). An AP may perform a calibration procedure with one or more stations (STAs) that involves NDP transmissions. The AP may calibrate an effective downlink channel response to an effective uplink channel to compensate for transmit and receive chain differences. The AP may initiate implicit sounding by transmitting a downlink message that includes an uplink NDP announcement frame to the one or more STAs, prompting uplink multi-user (MU) NDP transmission. The AP may estimate the uplink channel based on measuring the received NDPs and mirror the estimated uplink channel for reciprocal downlink channel estimation and precoding generation. The AP may perform MU multiple input multiple output (MIMO) downlink transmission that is precoded based on the channel estimation.
    Type: Application
    Filed: October 2, 2019
    Publication date: April 9, 2020
    Inventors: Lin Yang, Bin Tian, Sameer Vermani, Lochan Verma, Jialing Li Chen, Youhan Kim
  • Patent number: 10616031
    Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for techniques for 4096 Quadrature Amplitude Modulation (4096-QAM) with Uniform Constellations and Non-uniform Constellations and 16384 Quadrature Amplitude Modulation (16384-QAM) with Uniform Constellations and Non-uniform Constellations in Wireless Local Area Networks (WLAN). These 4096-QAM and 16384-QAM techniques can be implemented in a QAM modulator circuit on the transmit side and in a QAM demodulator circuit on the receive side to increase peak data rate without the need for additional transmission power or bandwidth.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: April 7, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Lin Yang, Bin Tian, Jialing Li Chen, Sameer Vermani, Lochan Verma
  • Patent number: 10608720
    Abstract: Various aspects of the disclosure relate to communication using a data unit that includes at least one mid-amble. In some aspects, an apparatus may use mid-ambles for mobility scenarios (e.g., when the apparatus is moving outdoors). The disclosure relates in some aspects to signaling associated with the use of mid-ambles. In some aspects, an apparatus may signal whether it supports sending and/or receiving data with mid-ambles. In some aspects, an apparatus may signal whether a particular data unit includes at least one mid-amble. In some aspects, an apparatus may signal an indication of at least one mid-amble update interval. In some aspects, an apparatus may signal whether a mid-amble includes a short training field.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: March 31, 2020
    Assignee: QUALCOMM Incorporated
    Inventors: Lochan Verma, Sameer Vermani, Bin Tian