Patents by Inventor Chittabrata Ghosh

Chittabrata Ghosh 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: 10365362
    Abstract: Methods, apparatuses, and computer readable media for location measurement reporting in a wireless network are disclosed. An apparatus of an initiator station (ISTA), where the apparatus comprises processing circuitry configured to encode a null data packet announce (NDPA) frame for transmission to a responder station (RSTA), the NDPA frame indicating a sounding sequence number, and encode a first null data packet (NDP) for transmission at a time T1 to the RSTA. The processing circuitry may be further configured to: decode a second NDP, the second NDP received from the RSTA, wherein the second NDP is received at a time T4, and decode a first location measurement report (LMR). The processing circuitry may be further configured to in response to an ISTA-to-RSTA LMR feedback agreement between the RSTA and ISTA indicating the ISTA is to send a second LMR, encode a second LMR.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: July 30, 2019
    Assignee: Intel IP Corporation
    Inventors: Feng Jiang, Jonathan Segev, Chittabrata Ghosh, Qinghua Li, Robert J. Stacey, Po-Kai Huang
  • Patent number: 10362604
    Abstract: This disclosure describes systems, methods, and devices related to reverse direction duration. A device may establish a multi-user multiple-input multiple-output (MU-MIMO) communication with one or more station devices. The device may determine a frame to be sent to the one or more station devices, wherein the frame includes at least one of a duration field or a reverse direction indication. The device may cause to send the frame to the one or more station devices.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 23, 2019
    Assignee: Intel IP Corporation
    Inventors: Ou Yang, Oren Kedem, Chittabrata Ghosh, Solomon Trainin, Carlos Cordeiro
  • Patent number: 10356624
    Abstract: An exemplary aspect is directed toward methods, apparatus, and systems related to spatial reuse with overlapping basic service set. A device may determine an overlapping basic service set (OBSS) associated with one or more access points. The device may then reduce a transmit power by a first margin. The device may then increase a packet detection threshold associated with the OBSS by a second margin. The device then sends an uplink data frame to at least one of the one or more access points.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 16, 2019
    Assignee: INTEL IP CORPORATION
    Inventors: Laurent Cariou, Chittabrata Ghosh, Po-Kai Huang, Robert Stacey
  • Patent number: 10342047
    Abstract: This disclosure describes systems, methods, and devices related to reverse direction multi-user multiple input multiple output (MU-MIMO). A device may determine a reverse direction indication to be included in a frame for transmission to one or more first devices in a MU-MIMO communication. The device may cause to wirelessly transmit the frame to a first device of the one or more first devices.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: July 2, 2019
    Assignee: Intel IP Corporation
    Inventors: Ou Yang, Oren Kedem, Solomon Trainin, Chittabrata Ghosh, Carlos Cordeiro, Laurent Cariou
  • Publication number: 20190200383
    Abstract: This disclosure describes systems, methods, and devices related to uplink (UL) null data packet (NDP) format for passive location. A device may cause to send a trigger frame that solicits poll response to one or more anchor stations involved in a passive ranging measurement. The device may identify one or more polling response frames received from the one or more anchor stations. The device may cause to send a trigger frame that solicits uplink null data packet (NDP) to the one or more anchor stations, wherein the uplink NDP comprises an indication of a high efficiency (HE) single user (SU) frame type.
    Type: Application
    Filed: February 27, 2019
    Publication date: June 27, 2019
    Inventors: Feng Jiang, Dibakar Das, Xiaogang Chen, Chittabrata Ghosh, Qinghua Li, Jonathan Segev, Robert Stacey, Ganesh Venkatesan
  • Publication number: 20190191323
    Abstract: Embodiments of an access point (AP), station (STA) and methods of communication are generally described herein. The AP may transmit a trigger frame (TF) that indicates resource units (RUs) that are available for contention based access by STAs for a fine timing measurement (FTM) protocol. The AP may attempt to decode one or more initial fine timing measurement request (iFTMR) frames received in the indicated RUs. The AP may transmit a broadcast acknowledgement (ACK) frame that indicates whether at least one iFTMR frame was decoded. The AP may, for a decoded iFTMR frame: allocate the RU corresponding to the decoded iFTMR frame to a corresponding STA for the FTM protocol; and transmit, in the corresponding RU, an initial fine timing measurement (iFTM) frame that includes an identifier of the corresponding STA.
    Type: Application
    Filed: October 24, 2017
    Publication date: June 20, 2019
    Inventors: Ganesh Venkatesan, Chittabrata Ghosh
  • Patent number: 10321486
    Abstract: Methods and devices are described for providing wireless stations (STAs) with two sets of enhanced distributed channel access (EDCA) parameters. Legacy EDCA parameters that are for single user (SU) operations and may be used by both high-efficiency (HE) STAs and legacy STAs without multi-user (MU) capability. MU EDCA parameters are defined to be more restrictive than legacy EDCA parameters in favoring MU operations. Embodiments are described that define sets of rules for regulating how STAs capable of both SU and MU uplink operations can use the different sets of EDCA parameters.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: June 11, 2019
    Assignee: Intel IP Corporation
    Inventors: Laurent Cariou, Po-Kai Huang, Chittabrata Ghosh, Robert J. Stacey
  • Publication number: 20190173625
    Abstract: Embodiments of a station (STA), access point (AP) and method for aggregation of data packets are generally described herein. The AP may transmit a trigger frame (TF) to an STA that indicates an access class (AC) constraint parameter and a traffic identifier (TID) aggregation limit parameter. The STA may select a group of aggregate TIDs from which medium access control (MAC) protocol data units (MPDUs) may be aggregated into an aggregated MPDU (A-MPDU). The AC constraint parameter may indicate a recommended AC from which at least a portion of the aggregate TIDs are to be selected. The TID aggregation limit parameter may indicate a number of TIDs to be selected for the group of aggregate TIDs.
    Type: Application
    Filed: October 26, 2018
    Publication date: June 6, 2019
    Inventors: Chittabrata Ghosh, Yaron Alpert, Robert J. Stacey, Daniel F. Bravo
  • Publication number: 20190159239
    Abstract: Computer readable media, methods, and apparatuses for centralized channel access for primary and secondary channels are disclosed. An apparatus is disclosed comprising memory and processing circuitry. The processing circuitry is configured to encode a schedule of one or more resource allocations, wherein each resource allocation comprises a type of allocation, a bandwidth, an indication of a channel, a source association identification (AID), a destination AID, an allocation start, and a duration. The type of allocation may be a service period (SP) or a contention-based access period (CBAP). The channel may be an indication of a basic service set (BSS) or a personal BSS (PBSS) primary channel, BSS or PBSS secondary channel, or BSS or PBSS tertiary channel. The processing circuitry may be configured to transmit the schedule to one or more stations identified by the source AID and the destination AID of the one or more resource allocations.
    Type: Application
    Filed: January 3, 2019
    Publication date: May 23, 2019
    Inventors: Laurent Cariou, Carlos Cordeiro, Chittabrata Ghosh, Assaf Kasher, Solomon B. Trainin
  • Patent number: 10299295
    Abstract: Methods, apparatuses, and computer readable media for pre-association frame exchange using random access are disclosed. An apparatus of a high-efficiency wireless local-area network (HEW) master station is disclosed. The apparatus includes transceiver circuitry and processing circuitry which may be configured to generate a trigger frame for uplink random access (TF-R), and transmit the TF-R. The transceiver circuitry and processing circuitry may be further configured to receive one or more responses in accordance with orthogonal frequency division multiple-access (OFDMA) to the trigger frame from one or more pre-association stations where the responses comprise pre-association identifiers corresponding to the one or more pre-association stations.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: May 21, 2019
    Assignee: Intel IP Corporation
    Inventors: Chittabrata Ghosh, Robert J. Stacey
  • Publication number: 20190150189
    Abstract: Some embodiments relate to methods, computer readable media, and apparatus for resolving acknowledgements between associated and unassociated stations. An apparatus is disclosed including processing circuitry configured to decode responses to a random-access trigger frame, wherein one of the responses is a response from an unassociated station. The processing circuitry may be further configured to: encode an acknowledgement to acknowledge receipt of the response from the unassociated station, where the acknowledgement comprises an indication that the acknowledgement is for the unassociated station, and where the acknowledgement further comprises a media access control (MAC) address of the unassociated station in a field of the acknowledgement other than a field in a MAC header portion of the acknowledgement. The processing circuitry may configure the HE access point to transmit the acknowledgement.
    Type: Application
    Filed: June 29, 2017
    Publication date: May 16, 2019
    Inventors: Chittabrata Ghosh, Laurent Cariou, Robert J. Stacey
  • Publication number: 20190150154
    Abstract: Some demonstrative embodiments include apparatuses, devices, systems and methods of communicating an Enhanced Directional Multi Gigabit (EDMG) support indication. For example, a wireless station may be configured to generate a frame having a structure compatible with a Directional Multi Gigabit (DMG) frame structure, the frame including an EDMG supported field to indicate that the wireless station supports one or more EDMG features; and to transmit the frame over a DMG channel.
    Type: Application
    Filed: January 17, 2019
    Publication date: May 16, 2019
    Inventors: Carlos Cordeiro, Solomon B. Trainin, Chittabrata Ghosh
  • Publication number: 20190132294
    Abstract: The disclosure provides some embodiments for securing long training field (LTF) sequence. A responding station (RSTA) configures a location management report (LMR) frame. The LMR frame is configured to include an LMR in respect of a previous measurement, and data to be used to generate a null data packet (NDP) for a current measurement that is to be performed following the previous measurement. The RSTA further encrypts the LMR frame using protected management frames (PMF) scheme, and transmits the encrypted LMR frame to an initiating station (ISTA) for generating an LTF sequence for the current measurement. In response to receiving an NDP announcement (NDPA) and an NDP for the current measurement from the ISTA, the RSTA generates an NDP for the current measurement based on the NDPA and the data using CCMP, and transmits the NDP to the ISTA.
    Type: Application
    Filed: November 1, 2018
    Publication date: May 2, 2019
    Inventors: Qinghua Li, Jonathan Segev, Benny Abramovsky, Danny Alexander, Xiaogang Chen, Chittabrata Ghosh, Feng Jiang, Ido Ouzieli, Robert Stacey
  • Patent number: 10271263
    Abstract: Systems and methods for frame addressing in DL MU-MIMO transmissions are described. In some embodiments, identifier information identifying receiving devices for a frame may be included in a header of that frame. In various embodiments, the identifier information may include a concatenation of respective identifiers for each of the plurality of receiving devices. In some other embodiments, the identifiers may include information identifying a pre-defined device group including several receiving devices. In some embodiments, the frame may include a medium access control (MAC) frame transmitted by an access point/personal basic service set control point (PCP/AP), and the recipient devices may include non-AP/non-PCP stations (STAs). In some such embodiments, a receiving STA address (RA) field or transmitting STA address (TA) field in a MAC header of the MAC frame may be used as a container for the recipient identifier information.
    Type: Grant
    Filed: December 26, 2015
    Date of Patent: April 23, 2019
    Assignee: Intell IP Corporation
    Inventors: Chittabrata Ghosh, Carlos Cordeiro, Laurent Cariou
  • Publication number: 20190116595
    Abstract: Some demonstrative embodiments include apparatuses, devices, systems and methods of communicating an Enhanced Directional Multi Gigabit (EDMG) support indication. For example, a wireless station may be configured to generate a frame having a structure compatible with a Directional Multi Gigabit (DMG) frame structure, the frame including an EDMG supported field to indicate that the wireless station supports one or more EDMG features; and to transmit the frame over a DMG channel.
    Type: Application
    Filed: August 26, 2018
    Publication date: April 18, 2019
    Inventors: Carlos Cordeiro, Solomon B. Trainin, Chittabrata Ghosh
  • Patent number: 10256878
    Abstract: New wireless networks can perform enhanced beamforming training for a multiple access technique, such as orthogonal frequency division multiple-access (OFDMA). The configurations of the stations and the networks presented herein provide a multiple-station beam refinement protocol (MSBRP) that may be used to train the transmit end and/or the receive end for the stations in a dense wireless local area network (WLAN). The MSBRP can have at least two phases. The first phase concurrently trains the receive side of multiple responder stations from one set of training signals sent from an initiator station. Then, each responder station can send training signals to the initiator station in a set of ordered phases associated with each responder station. The MSBRP eliminates inefficiencies associated with conducting multiple BRPs that include only pairs of stations.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 9, 2019
    Assignee: INTEL IP CORPORATION
    Inventors: Laurent Cariou, Chittabrata Ghosh, Carlos Cordeiro
  • Patent number: 10243630
    Abstract: For example, an apparatus may include a plurality of PHY components configured to communicate over a frequency band above 45 GHz via a plurality of sectorized antennas, the plurality of PHY components including at least a first PHY component to communicate via a first sectorized antenna and a second PRY component to communicate via a second sectorized antenna; a plurality of MAC components including at least a first MAC component and a second MAC component, the first MAC component configured to control channel access via the first sectorized antenna and to process MPDUs to be communicated via the first sectorized antenna, the second MAC component configured to control channel access via the second sectorized antenna and to process MPDUs to be communicated via the second sectorized antenna; and a MAC management component configured to manage communication via the plurality of sectorized antennas.
    Type: Grant
    Filed: January 7, 2018
    Date of Patent: March 26, 2019
    Assignee: INTEL IP CORPORATION
    Inventors: Laurent Cariou, Solomon B. Trainin, Chittabrata Ghosh, Ou Yang, Carlos Cordeiro
  • Patent number: 10244555
    Abstract: An apparatus of a first high-efficiency (HE) access point (AP) or station for spatial reuse is the disclosed. The apparatus includes processing circuitry configured to: decode a first portion of a first packet; and if the first portion indicates the first packet was transmitted by a second HE AP or station and that the first packet is an overlapping basic service set (OBSS) packet, then if a preamble detect energy is below a threshold, cause to be transmitted a second packet simultaneously with a portion of the first packet after the first portion. The processing circuitry may be configured to determine the first portion was transmitted by the second HE AP or station if a field in a physical (PHY) header or a second field in a media access control (MAC) header indicate the first packet was transmitted by the second HE AP or station.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: March 26, 2019
    Assignee: Intel IP Corporation
    Inventors: Po-Kai Huang, Laurent Cariou, Robert J. Stacey, Chittabrata Ghosh
  • Patent number: 10237872
    Abstract: Techniques for group-based spatial stream assignment signaling in 60 GHz wireless networks are described. According to various such techniques, a 60 GHz-capable transmitting device may be configured to define one or more DL MU-MIMO groups, each of which may comprise one or more respective 60 GHz-capable receiving devices. In various embodiments, the 60 GHz-capable transmitting device may include a DL MU-MIMO group ID within DL MU-MIMO control information in a PHY header of a PPDU in order to indicate that the PPDU is directed to a DL MU-MIMO group corresponding to that DL MU-MIMO group ID. In some embodiments, DL MU-MIMO control information may comprise information specifying spatial stream assignments for the 60 GHz-capable receiving devices of that DL MU-MIMO group. Other embodiments are described and claimed.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: March 19, 2019
    Assignee: INTEL CORPORATION
    Inventors: Chittabrata Ghosh, Carlos Cordeiro
  • Patent number: 10231182
    Abstract: Techniques for implicit indication of trigger frame start times are described. In various embodiments, an AP may be configured to transmit a trigger frame at the beginning of each target wake time (TWT) interval. In some embodiments, each STA that uses a given TWT interval may be configured to treat a TWT Start Time received from the AP not only as a start time for that TWT interval but also as a start time for the trigger frame to be received from the AP. In various embodiments, each STA in a TWT Group may wait to receive the trigger frame from the AP upon awakening during its TWT interval. The embodiments are not limited in this context.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: March 12, 2019
    Assignee: INTEL IP CORPORATION
    Inventor: Chittabrata Ghosh