Patents by Inventor Monisha Ghosh
Monisha 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).
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Patent number: 10063290Abstract: A station is used to implement non-linear coding based multiuser multiple-input multiple-output (MU-MIMO). The station includes a processor that may be configured to perform a number of actions. For example, the processor receives a null packet from an access point (AP). Channel feedback is generated using the null packet. The channel feedback is sent to the AP. QR dependent information is received from the AP. Data is sent to the AP according to the QR dependent information.Type: GrantFiled: March 13, 2014Date of Patent: August 28, 2018Assignee: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Pengfei Xia, Oghenekome Oteri, Nirav B. Shah, Monisha Ghosh, Hanqing Lou, Robert L. Olesen
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Publication number: 20180241531Abstract: A method and apparatus for operation by an access point (AP) is provided. The method may comprise receiving a first frame from a first STA, the first frame including first data and receiving a second frame from a second STA, the second frame including second data. In response to the receiving, an acknowledgement (ACK) frame may be transmitted to the first STA and to the second STA. The ACK frame may be addressed to a broadcast address and include a field which indicates whether the ACK frame is a multiple traffic identifier (multi-TID) block ACK frame format or another ACK frame format.Type: ApplicationFiled: April 25, 2018Publication date: August 23, 2018Applicant: InterDigital Patent Holdings, Inc.Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Sudheer A. Grandhi
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Publication number: 20180227957Abstract: A method and apparatus for supporting UL MU diversity are provided. The method may comprise transmitting a MU RTS frame to a plurality of STAs, the MU RTS frame comprising a plurality of MCS indicators, a plurality of data stream number indicators, an indication of a spatial technology, and a duration field. The MU RTS frame solicits clear to send (CTS) frame responses from a plurality of STAs and simultaneous UL OFDMA transmissions may be received in accordance with the MCS indicators, the data stream number indicators and the indicated spatial technology. An AP may transmit another frame comprising UL transmission information for transmission of data frames by the plurality of STAs. The AP may receive from the plurality of STAs, the data frames simultaneously and may additionally transmit acknowledgements of the received data frames to the plurality of STAs.Type: ApplicationFiled: April 9, 2018Publication date: August 9, 2018Applicant: InterDigital Patent Holdings, Inc.Inventors: Hanqing LOU, Guodong ZHANG, Xiaofei WANG, Juan FANG, Oghenekome OTERI, Pengfei XIA, Monisha GHOSH, Robert L. OLESEN
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Patent number: 10015821Abstract: 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: GrantFiled: May 2, 2014Date of Patent: July 3, 2018Assignee: InterDigital Patent Holdings, Inc.Inventors: Oghenekome Oteri, Hanqing Lou, Monisha Ghosh, Robert L. Olesen, Frank La Sita, Xiaofei Wang, Pengfei Xia, Nirav B. Shah
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Publication number: 20180167926Abstract: 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: ApplicationFiled: February 7, 2018Publication date: June 14, 2018Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Monisha Ghosh, Robert L. Olesen
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Patent number: 9992685Abstract: A medical body area network (MBAN) system comprises network nodes intercommunicating via short range wireless communication. A primary user database contains information pertaining to usage of a restricted spectrum by primary users wherein the MBAN systems are secondary users of the restricted spectrum. An electronic key generation engine comprises a digital processing device configured to generate an electronic key (E-key) indicative of whether the MBAN system is allowed to use the restricted spectrum based on content of the primary users database. An MBAN application server is configured to distribute the E-key to the MBAN system. The MBAN system includes a spectrum control sub-module comprising a digital processor configured to select an operating channel or frequency for the short range wireless communication based at least in part on whether the E-key authorizes the MBAN system to use the restricted spectrum.Type: GrantFiled: February 7, 2017Date of Patent: June 5, 2018Assignee: Koninklijke Philips N.V.Inventors: Dong Wang, Monisha Ghosh, Delroy Smith
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Patent number: 9979446Abstract: Methods for WiFi beamforming, feedback, and sounding (WiBEAM) are described. Codebook based beamforming feedback signaling and sounding mechanisms for use in wireless communications are disclosed. The methods described herein improve the feedback efficiency by using Givens rotation based decompositions and quantizing the resulting angles of the Givens rotation based decompositions using a range from a subset of [0, 2?]. Feedback may also be divided into multiple components to improve feedback efficiency/accuracy. Time domain beamforming reports for taking advantage of channel reciprocity while still taking into account practical radio frequency (RF) channel impairments are also described. Beamforming feedback that prioritized the feedback bits in accordance with the significance of the bits is also disclosed.Type: GrantFiled: May 19, 2017Date of Patent: May 22, 2018Assignee: InterDigital Patent Holdings, Inc.Inventors: Pengfei Xia, Monisha Ghosh, Hanqing Lou, Robert L. Olesen, Oghenekome Oteri
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Publication number: 20180084566Abstract: 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: ApplicationFiled: November 30, 2017Publication date: March 22, 2018Applicant: InterDigital Patent Holdings, Inc.Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B. Shah, Guodong Zhang, Ronald Murias
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Publication number: 20180063796Abstract: 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: ApplicationFiled: October 30, 2017Publication date: March 1, 2018Applicant: INTERDIGITAL PATENT HOLDINGS, INC.Inventors: Oghenekome OTERI, Pengfei XIA, Xiaofei WANG, Hanqing LOU, Monisha GHOSH, Robert L. OLESEN, Nirav B. SHAH, Frank LA SITA
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Patent number: 9860908Abstract: 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 request-to-send (G-RTS) message that includes a resource allocation that indicates at least one assigned channel for the WTRU; a transmitter configured to transmit a clear-to-send (CTS) message, to the AP, over the at least one assigned channel of the plurality of channels; and the receiver further configured to receive a data message, from the AP, over at least one channel of the plurality of channels.Type: GrantFiled: April 28, 2017Date of Patent: January 2, 2018Assignee: InterDigital Patent Holdings, Inc.Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B Shah, Guodong Zhang, Ronald Murias
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Patent number: 9807699Abstract: 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: GrantFiled: September 12, 2014Date of Patent: October 31, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Oghenekome Oteri, Pengfei Xia, Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Robert L. Olesen, Nirav B. Shah, Frank La Sita
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Patent number: 9801179Abstract: A communications base-station configured to operate as a hub in a wireless network and provide communication services to a set of remote customer devices using a wireless protocol is disclosed. The communications base-station includes an antenna array having a plurality of antennae arranged in a fashion as to enable the antenna array to transmit and receive wireless signals in both a substantially omnidirectional and non-omnidirectional pattern, a physical layer (PHY) device coupled to the antenna array and configured to transmit and receive wireless signals and a media access control (MAC) device coupled to the PHY device and configured to direct the antenna array to concurrently provide beamformed wireless signals to a first customer device and omnidirectional wireless signals to second customer device.Type: GrantFiled: April 1, 2015Date of Patent: October 24, 2017Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Carlos M. Cordeiro, Dagnachew Birru, Monisha Ghosh
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Publication number: 20170294953Abstract: WTRUs, access points (APs) and methods thereon are disclosed. A method on a WTRU may include receiving a message from an AP that comprises a beamformee capability element; sending a second message to the AP that comprises a beamformer capability element; and receiving, from the AP, a third message in response to the second message that indicates a group to which the WTRU is assigned. The group may be based on the beamformer capability element and the group may indicate UL transmission information to be used by the WTRU. A method on an AP may include determining a group for multiple WTRUs based on a received beamformer capability element. A method on a WTRU may include sending to an AP a message with a low overhead preamble for UL MU-MIMO. The low overhead preamble may include LTFs that enable the AP to distinguish the WTRU from other WTRUs.Type: ApplicationFiled: June 20, 2017Publication date: October 12, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Monisha Ghosh, Xiaofei Wang, Hanqing Lou, Nirav B. Shah, Guodong Zhang, Frank La Sita
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Method to use auxiliary channel to achieve fast and power-efficient association in wireless networks
Patent number: 9781724Abstract: A medical system includes one or more MBAN devices that acquire and communicate patient data. The medical system further including one or more medical body area network (MBAN) systems, each MBAN system including the one or more MBAN devices that communicate the patient data with a hub device via short-range wireless communication, the communication of the patient data via the short-range wireless communication being within a predefined spectrum. The hub device receives patient data communicated from the one or more MBAN devices and communicates with a central monitoring station via a longer range communication. The one or more MBAN devices transmit an association request to the hub device on one or more auxiliary channels to associate each MBAN device with the MBAN system, the auxiliary channels being outside the predefined spectrum.Type: GrantFiled: February 3, 2012Date of Patent: October 3, 2017Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Dong Wang, Monisha Ghosh, Delroy Smith, Hongqiang Zhai, Maulin Dahyabhai Patel -
Publication number: 20170257153Abstract: Methods for WiFi beamforming, feedback, and sounding (WiBEAM) are described. Codebook based beamforming feedback signaling and sounding mechanisms for use in wireless communications are disclosed. The methods described herein improve the feedback efficiency by using Givens rotation based decompositions and quantizing the resulting angles of the Givens rotation based decompositions using a range from a subset of [0, 2?]. Feedback may also be divided into multiple components to improve feedback efficiency/accuracy. Time domain beamforming reports for taking advantage of channel reciprocity while still taking into account practical radio frequency (RF) channel impairments are also described. Beamforming feedback that prioritized the feedback bits in accordance with the significance of the bits is also disclosed.Type: ApplicationFiled: May 19, 2017Publication date: September 7, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Pengfei Xia, Monisha Ghosh, Hanqing Lou, Robert L. Olesen, Oghenekome Oteri
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Publication number: 20170231009Abstract: 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 request-to-send (G-RTS) message that includes a resource allocation that indicates at least one assigned channel for the WTRU; a transmitter configured to transmit a clear-to-send (CTS) message, to the AP, over the at least one assigned channel of the plurality of channels; and the receiver further configured to receive a data message, from the AP, over at least one channel of the plurality of channels.Type: ApplicationFiled: April 28, 2017Publication date: August 10, 2017Applicant: InterDigital Patent Holdings, Inc.Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B Shah, Guodong Zhang, Ronald Murias
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Publication number: 20170230149Abstract: 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: ApplicationFiled: July 11, 2014Publication date: August 10, 2017Inventors: Xiadfei Wang, Guodong Zhang, Robert L Olesen, Hanqing Lou, Monisha Ghosh, Pengfei Xia, Nirav B Shah, Oghenekome Oteri
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Patent number: 9730216Abstract: A method (900) for medium access reservation in a multiband wireless network comprises determining available slots (220) for reservation in a superframe (210) for reservation across multiple channels (S910); generating channel reservation protocol (CRP) availability information element (IE) (310) to indicate the available slots on a main channel; generating one or more Extended-Channel CRP availability IEs (500) to indicate the available slots on one or more respective extended channels (S920); exchanging the CRP availability IE and the Extended-Channel CRP availability IEs between a receiving device and a transmitting device (S930); and generating a Multiband CRP IE (600) to reserve slots that are available on the receiving device and the transmitting device (S940).Type: GrantFiled: July 5, 2011Date of Patent: August 8, 2017Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Jianfeng Wang, Monisha Ghosh
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Patent number: 9680538Abstract: Methods for WiFi beamforming, feedback, and sounding (WiBEAM) are described. Codebook based beamforming feedback signaling and sounding mechanisms for use in wireless communications are disclosed. The methods described herein improve the feedback efficiency by using Givens rotation based decompositions and quantizing the resulting angles of the Givens rotation based decompositions using a range from a subset of [0, 2?]. Feedback may also be divided into multiple components to improve feedback efficiency/accuracy. Time domain beamforming reports for taking advantage of channel reciprocity while still taking into account practical radio frequency (RF) channel impairments are also described. Beamforming feedback that prioritizes the feedback bits in accordance with the significance of the bits is also disclosed.Type: GrantFiled: September 27, 2013Date of Patent: June 13, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Pengfei Xia, Monisha Ghosh, Hanqing Lou, Robert L. Olesen, Oghenekome Oteri
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Patent number: 9681462Abstract: Method and apparatuses may provide multi-user parallel channel access (MU-PCA). For example, a wireless transmit/receive unit (WTRU) is provided that belongs to a MU-PCA group of a plurality of WTRUs that are configured to simultaneously communicate via a plurality of channels managed by an access point (AP). The WTRU may include a receiver configured to receive a data message, from the AP, over a channel associated with the WTRU of the plurality of channels, wherein the data message is one of a group of multiple data messages transmitted simultaneously by the AP over the plurality of channels; and a transmitter configured to transmit a message to the AP over the channel associated with the WTRU, wherein the message includes an indication bit for notifying the AP whether the WTRU has uplink (UL) data to transmit to the AP.Type: GrantFiled: April 12, 2016Date of Patent: June 13, 2017Assignee: InterDigital Patent Holdings, Inc.Inventors: Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Nirav B Shah, Guodong Zhang, Ronald Murias