Patents by Inventor Sarang Shrikrishna Wagholikar
Sarang Shrikrishna Wagholikar 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: 11190391Abstract: Technology for network loop detection in a hybrid mesh network is described. In one embodiment, processing logic receives a network event message indicating a change in a network topology of a mesh network and, responsive to the network event message, determines that the mesh network includes at least one network loop comprising a plurality of communication links connecting two nodes of the mesh network. The processing logic further determines that the at least one network loop includes at least one wired communication link and disables at least one of the plurality of communication links to disconnect the at least one network loop.Type: GrantFiled: April 16, 2018Date of Patent: November 30, 2021Assignee: Amazon Technologies, Inc.Inventors: Avinash Joshi, Ashish Kumar Shukla, Radhakrishnan Suryanarayanan, Sarang Shrikrishna Wagholikar
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Patent number: 10681578Abstract: A first wireless communication device includes a timing module to provide a timing synchronization function (TSF) time. A fine timing measurement module is to transmit a first request to perform a fine timing measurement to determine a distance between the first wireless communication device and a second wireless communication device. The first request includes a first value of the TSF time at which to start a burst period of the fine timing measurement, and the first value is determined in accordance with the TSF time provided by the timing module. The fine timing measurement module is further to receive a first response as transmitted from the second wireless communication device in response to the first request and transmit a second request to start the burst period at a TSF time indicated by the first value. The first response includes the first value of the TSF time.Type: GrantFiled: December 18, 2017Date of Patent: June 9, 2020Assignee: Marvell Asia Pte., Ltd.Inventors: Liwen Chu, Sagar A. Tamhane, Sarang Shrikrishna Wagholikar, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 10425908Abstract: The present disclosure describes methods and apparatus for enabling spontaneous location determination in a scheduled wireless communication environment. For example embodiments, a first wireless communication device includes a transceiver and a multiple recipient communication system. The transceiver is configured to receive from a second wireless communication device a request to participate in a location determination procedure (LDP) that is to occur at least partially during a communication period that is assigned to a third wireless communication device. The multiple recipient communication system is configured to generate a multiple recipient frame that encapsulates (i) data that is destined for the third wireless communication device and (ii) a response to the request to participate in the LDP.Type: GrantFiled: July 15, 2015Date of Patent: September 24, 2019Assignee: Marvell World Trade Ltd.Inventors: Sagar A. Tamhane, Sarang Shrikrishna Wagholikar, Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 10225338Abstract: A method for discovering devices in a peer to peer (P2P) wireless communication network is described. During a search state of a first communication device, a probe request is transmitted by the first communication device on a first channel included in a plurality of channels. During the search state, a probe response transmitted by a second communication device on the first channel is received by the first communication device. In response to the probe response, a ranging exchange with the second communication device is performed by the first communication device.Type: GrantFiled: April 15, 2015Date of Patent: March 5, 2019Assignee: Marvell International Ltd.Inventors: Liwen Chu, Sagar Tamhane, Sarang Shrikrishna Wagholikar, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 9974040Abstract: While a peer-to-peer (P2P) wireless network that includes both i) a first communication device and ii) a second communication device is not formed, and prior to the first communication device and the second communication device performing a group owner (GO) negotiation in connection with forming the P2P wireless network, the first communication device performs a ranging exchange with the second communication device. After performing the ranging exchange with the second communication device, the first communication device performs a GO negotiation with the second communication device.Type: GrantFiled: January 30, 2017Date of Patent: May 15, 2018Assignee: Marvell International Ltd.Inventors: Liwen Chu, Sagar Tamhane, Sarang Shrikrishna Wagholikar, Hongyuan Zhang, Hui-Ling Lou
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Publication number: 20180109970Abstract: A first wireless communication device includes a timing module to provide a timing synchronization function (TSF) time. A fine timing measurement module is to transmit a first request to perform a fine timing measurement to determine a distance between the first wireless communication device and a second wireless communication device. The first request includes a first value of the TSF time at which to start a burst period of the fine timing measurement, and the first value is determined in accordance with the TSF time provided by the timing module. The fine timing measurement module is further to receive a first response as transmitted from the second wireless communication device in response to the first request and transmit a second request to start the burst period at a TSF time indicated by the first value. The first response includes the first value of the TSF time.Type: ApplicationFiled: December 18, 2017Publication date: April 19, 2018Inventors: Liwen Chu, Sagar A. Tamhane, Sarang Shrikrishna Wagholikar, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 9942836Abstract: After determining that a P2P discovery process is to commence, at least a portion of the P2P discovery process is delayed to permit communication via a non-P2P communication link, and/or at least a portion of the P2P discovery process is not performed to permit communication via the non-P2P communication link. Communications are performed via the non-P2P communication link during a time period that, prior to the act of delaying the P2P discovery process and/or deciding not to perform the P2P discovery process, would have been allocated for the P2P discovery process.Type: GrantFiled: November 23, 2015Date of Patent: April 10, 2018Assignee: Marvell International Ltd.Inventors: Deepak Shahaji Nagawade, Sarang Shrikrishna Wagholikar, Sudhanshu Singh
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Patent number: 9913208Abstract: Apparatus, methods, and other embodiments associated with obtaining schedule information to support snoop ranging are described. According to one embodiment, a method is performed by a station device on a computer network and includes establishing a network association with a network device of the computer network. The method also includes receiving schedule information from the network device without having to previously transmit to the network device to initiate acquisition of the schedule information. The schedule information is negotiated between other network devices communicating in the computer network, or between the network device and at least one of the other network devices. The schedule information is communicated to the network device and specifies timing associated with a ranging exchange between the other network devices, or between the network device and at least one of the other network devices, and may be used by the station device for snooping.Type: GrantFiled: March 10, 2015Date of Patent: March 6, 2018Assignee: MARVELL INTERNATIONAL LTD.Inventors: Liwen Chu, Sagar Tamhane, Sarang Shrikrishna Wagholikar, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 9883472Abstract: The present disclosure describes methods and apparatus for beaconing within a wireless network based on an indication of distance. For certain example embodiments, in a wireless network in which a master device is a device configured to transmit a beacon within the wireless network, a first wireless communication device may determine, based on an indication of distance between two wireless communication devices, if the first wireless communication device is to act as a master device. For example, a wireless signal may be received. Based at least partially on the received wireless signal, an indication of distance between two wireless communication devices in a wireless network may be obtained. And based at least partially on the obtained indication of distance between the two wireless communication devices, it may be determined if a first wireless communication device is to act as a master device within the wireless network.Type: GrantFiled: April 22, 2015Date of Patent: January 30, 2018Assignee: Marvell International Ltd.Inventors: Sagar A. Tamhane, Paul A. Lambert, Binh Quoc Tran, Sarang Shrikrishna Wagholikar, Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 9854468Abstract: A first wireless communication device including a timing module and a fine timing measurement module. The timing module is configured to provide a first timer value. The fine timing measurement module is configured to receive, from a second wireless communication device, a first request to perform a fine timing measurement to determine a distance between the first wireless communication device and the second wireless communication device, and transmit a first response including a first time to start a burst period for performing the fine timing measurement. The first time is one of included in the request received from the second wireless communication device and based on the first timer value. The fine timing measurement module is further configured to perform the fine timing measurement in the burst period starting at the first time.Type: GrantFiled: March 5, 2015Date of Patent: December 26, 2017Assignee: Marvell World Trade Ltd.Inventors: Liwen Chu, Sagar A. Tamhane, Sarang Shrikrishna Wagholikar, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 9762939Abstract: A method is implementable in a source device operable to provide, via a wireless channel, a video stream to a sink device for display by the sink device. The method includes receiving link quality information indicative of a condition of the wireless channel and/or performance of communications between the source device and the sink device via the wireless channel. The method also includes determining a measure of network congestion based on the link quality information, and, based on the measure of network congestion, skipping one or more, but not all, video frames of a plurality of video frames in the video stream, such that the one or more video frames are not provided to the sink device, reconfiguring a video encoder operating on the plurality of video frames, such that an output bit rate of the video encoder is changed, and/or changing a video format of the video stream.Type: GrantFiled: September 27, 2013Date of Patent: September 12, 2017Assignee: Marvell World Trade Ltd.Inventors: Jianwei Bei, Manish Kumar, Sarang Shrikrishna Wagholikar
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Patent number: 9661523Abstract: A first wireless communication device including a distance determination module. The distance determination module is configured to calculate a distance between the first wireless communication device and a second wireless communication device. The first wireless communication device is configured to communicate with the second wireless communication device at one of a plurality of available data rates. A rate selection module is configured to select, based on the distance between the first wireless communication device and the second wireless communication device, a first data rate from the plurality of available data rates and/or adjust, based on the distance, the first data rate. The adjusted first data rate corresponds to a second data rate selected from the plurality of available data rates. A transceiver is configured to communicate with the second wireless communication device at the first data rate and/or the second data rate.Type: GrantFiled: March 17, 2015Date of Patent: May 23, 2017Assignee: Marvell International Ltd.Inventors: Sagar A. Tamhane, Sarang Shrikrishna Wagholikar, Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 9485767Abstract: A first wireless communication device including a first transceiver and a second transceiver. The first transceiver is configured to transmit first signals according to a first wireless communication technology. The second transceiver is configured to transmit second signals according to a second wireless communication technology. Memory is configured to store a schedule that identifies first intervals for allowing communication using the first signals and second intervals for allowing communication using the second signals. A coexistence circuit is configured to allow the first transceiver to transmit the first signals only during the first intervals, allow the second transceiver to transmit the second signals only during the second intervals, and cause the first transceiver to transmit, prior to each of the second intervals, a message that indicates a duration of a respective one of the second intervals.Type: GrantFiled: May 1, 2015Date of Patent: November 1, 2016Assignee: Marvell World Trade Ltd.Inventors: Sarang Shrikrishna Wagholikar, Harish Ramamurthy, Rajesh Shreeram Bhagwat, Matthew L. Semersky
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Patent number: 9356974Abstract: Systems, methods, apparatus, and techniques are provided for establishing an application layer communications session over a layer 2 (L2) communications connection. In particular, a discovery request frame is transmitted from a first device. A discovery response frame is received at the first device, where the discovery response frame is transmitted from a second device in response to having received the discovery request frame. An application layer communications session is established between the first device and the second device while maintaining an existing L2 communications connection between the first device and the second device.Type: GrantFiled: January 9, 2013Date of Patent: May 31, 2016Assignee: Marvell World Trade Ltd.Inventors: Deepak Shahaji Nagawade, Su Khiong Yong, Sarang Shrikrishna Wagholikar
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Publication number: 20160021496Abstract: The present disclosure describes methods and apparatus for enabling spontaneous location determination in a scheduled wireless communication environment. For example embodiments, a first wireless communication device includes a transceiver and a multiple recipient communication system. The transceiver is configured to receive from a second wireless communication device a request to participate in a location determination procedure (LDP) that is to occur at least partially during a communication period that is assigned to a third wireless communication device. The multiple recipient communication system is configured to generate a multiple recipient frame that encapsulates (i) data that is destined for the third wireless communication device and (ii) a response to the request to participate in the LDP.Type: ApplicationFiled: July 15, 2015Publication date: January 21, 2016Inventors: Sagar A. Tamhane, Sarang Shrikrishna Wagholikar, Liwen Chu, Hongyuan Zhang, Hui-Ling Lou
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Patent number: 9215657Abstract: A first device includes a physical-layer device, an adjusting module, and a power module. The physical-layer device transmits, during each of first windows, a request signal from the first device to discover one or more network devices. The first windows occur during a first period of time. The physical-layer device receives responses to the request signal from network devices. Each of the responses is received during a respective one of the first windows. The adjusting module, based on the responses to the request signal, determines whether to adjust lengths of second windows or a number of the second windows to occur during a second period of time. The second period of time occurs subsequent to and is a same length as the first period of time. The power module, during each of the second windows, transitions the first device between being powered ON and being at least partially powered OFF.Type: GrantFiled: April 22, 2014Date of Patent: December 15, 2015Assignee: Marvell International Ltd.Inventors: Milind Kopikare, Sarang Shrikrishna Wagholikar, Raja Banerjea, Ken Kinwah Ho
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Patent number: 9197535Abstract: After determining that a P2P discovery process is to commence, one or both of (i) at least a portion of the P2P discovery process is delayed to permit communication via a non-P2P communication link, or (ii) at least a portion of the P2P discovery process is not performed to permit communication via the non-P2P communication link. Communications are performed via the non-P2P communication link during a time period that, prior to delaying or deciding not to perform the portion of the P2P discovery process, would have been allocated for the P2P discovery process.Type: GrantFiled: December 19, 2012Date of Patent: November 24, 2015Assignee: MARVELL INTERNATIONAL LTD.Inventors: Deepak Shahaji Nagawade, Sarang Shrikrishna Wagholikar, Sudhanshu Singh
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Publication number: 20150257028Abstract: A first wireless communication device including a timing module and a fine timing measurement module. The timing module is configured to provide a first timer value. The fine timing measurement module is configured to receive, from a second wireless communication device, a first request to perform a fine timing measurement to determine a distance between the first wireless communication device and the second wireless communication device, and transmit a first response including a first time to start a burst period for performing the fine timing measurement. The first time is one of included in the request received from the second wireless communication device and based on the first timer value. The fine timing measurement module is further configured to perform the fine timing measurement in the burst period starting at the first time.Type: ApplicationFiled: March 5, 2015Publication date: September 10, 2015Inventors: Liwen Chu, Sagar A. Tamhane, Sarang Shrikrishna Wagholikar, Hongyuan Zhang, Hui-Ling Lou
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Publication number: 20150237625Abstract: A first wireless communication device including a first transceiver and a second transceiver. The first transceiver is configured to transmit first signals according to a first wireless communication technology. The second transceiver is configured to transmit second signals according to a second wireless communication technology. Memory is configured to store a schedule that identifies first intervals for allowing communication using the first signals and second intervals for allowing communication using the second signals. A coexistence circuit is configured to allow the first transceiver to transmit the first signals only during the first intervals, allow the second transceiver to transmit the second signals only during the second intervals, and cause the first transceiver to transmit, prior to each of the second intervals, a message that indicates a duration of a respective one of the second intervals.Type: ApplicationFiled: May 1, 2015Publication date: August 20, 2015Inventors: Sarang Shrikrishna WAGHOLIKAR, Harish Ramamurthy, Rajesh Shreeram Bhagwat, Matthew L. Semersky
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Patent number: 9078108Abstract: A wireless medium often supports communications of multiple devices on different respective channels of the wireless medium. In some aspects described herein, a first frame is transmitted on a first channel of a wireless medium effective to prevent a member device of a peer-to-peer group from attempting to access the wireless medium, a second frame inviting a wireless device to join the peer-to-peer group is transmitted on a second channel of the wireless medium, and the first channel of the wireless medium is returned to thereby enabling a next attempt of the member device to access the wireless medium.Type: GrantFiled: May 12, 2014Date of Patent: July 7, 2015Assignee: Marvell International Ltd.Inventors: Sarang Shrikrishna Wagholikar, Deepak Shanhaji Nagawade