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公开(公告)号：US20170195913A1
公开(公告)日：2017-07-06
申请号：US15248297
申请日：2016-08-26
Applicant: Facebook, Inc.
Inventor： Krishna Gomadam , Djordje Tujkovic , Vish Ponnampalam
CPC classification number: H04J11/0056 , H04J13/0014 , H04J13/16 , H04L2025/03789 , H04L2025/03796
Abstract: Apparatuses, methods, and systems of mitigating packet interference are disclosed. One method includes receiving, by a sector, data to be transmitted over a specific wireless link of a wireless network, configuring a packet for transmission over the specific wireless link, wherein the packet includes a preamble, and the data, and transmitting, by the sector, the configured packet over the specific wireless link. Configuring the packet includes identifying a reference sequence based on the specific wireless link, and inserting the reference sequence into at least a portion of the preamble.
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公开(公告)号：US20170195025A1
公开(公告)日：2017-07-06
申请号：US14986471
申请日：2015-12-31
Applicant: Facebook, Inc.
Inventor： Sanjai Kohli , Djordje Tujkovic , Krishna Gomadam
CPC classification number: H04B7/088 , H04B7/063 , H04B7/0695
Abstract: A procedure to establish a link in a directional wireless system where two nodes cannot listen to each other unless optimized beamforming pair is used and timing and framing synchronization is acquired. The procedure determines a set of beamforming pairs that the nodes can use for communication in addition to acquiring the framing and timing synchronization. Training packets are periodically transmitted by a transmitter while a receiver listens in each of a number of receive directions. Training packets are sent N times in N directions while a receiver listens in each of M receive directions until all N×M possible transmit and receive direction pair possibilities are tried. The receiver informs the transmitter which transmit and receive direction pairs were successful in creating communication links between the nodes.
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公开(公告)号：US10805857B2
公开(公告)日：2020-10-13
申请号：US16383587
申请日：2019-04-13
Applicant: Facebook, Inc.
Inventor： Krishna Gomadam , Djordje Tujkovic , Sanjai Kohli
Abstract: Apparatuses, methods, and systems for charactering and selecting micro-routes between nodes of a wireless network are disclosed. One method includes characterizing a plurality of micro-routes between the first node and the second node, wherein the plurality of micro-routes includes a micro-route and at least one other micro-route, including directing a first beam formed by antennas of the first node to a plurality of directions, for each of the plurality of directions of the first beam, directing a second beam formed by antennas of the second node to a plurality of directions, characterizing a link quality between the first node and the second node for each of the plurality of beam directions of the first beam and each of the plurality of beam directions of the second beam, classifying a plurality of clusters of characterized link qualities that include characterized link qualities greater than a threshold.
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公开(公告)号：US10791581B2
公开(公告)日：2020-09-29
申请号：US16431618
申请日：2019-06-04
Applicant: Facebook, Inc.
Inventor： Djordje Tujkovic , Krishna Gomadam , Sanjai Kohli
Abstract: Apparatuses, methods, and systems of a node that supports a simultaneous bidirectional wireless link with a second node are disclosed. One embodiment of the node includes a first transceiver operative to form a beam directed to a first sector of a second node, and a second transceiver operative to form a beam directed to a second sector of the second node, wherein for at least some time slots a simultaneous bidirectional wireless link is formed between the node and the second node by the one of the first transceiver or the second transceiver transmitting a first communication signal to the second node while the other of the first transceiver or the second transceiver is receiving a second communication signal from the second node, and selecting between forming the simultaneous bidirectional wireless link or a non-simultaneous bidirectional wireless link based on a throughput or a link quality.
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公开(公告)号：US10791016B2
公开(公告)日：2020-09-29
申请号：US16174181
申请日：2018-10-29
Applicant: Facebook, Inc.
Inventor： Krishna Gomadam , Djordje Tujkovic
IPC: H04L27/34 , H04L27/26 , H04L27/18 , H04L5/00 , H04B1/7103
Abstract: Apparatuses, methods, and systems for dynamic bandwidth allocation are disclosed. One method includes communicating, by a plurality wireless nodes, with each other through a plurality of wireless links, and wherein each wireless link of the plurality of nodes is assigned a specific symbol phase rotation based on a classification of the wireless link, constructing, by a node, a packet including data that is to be transmitted to a receiving node in the wireless network, wherein the constructed packet includes a plurality of symbols, retrieving the specific symbol phase rotation based on the classification of the specific wireless link over which the plurality of symbols are to be transmitted over, rotating a phase of each successive symbol based on the specific symbol phase rotation of the specific wireless link, and based on a position of the symbol within the constructed packet, and controlling transmission of the constructed packet.
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Patent Agency Ranking
公开(公告)号：US10313953B2
公开(公告)日：2019-06-04
申请号：US15382676
申请日：2016-12-18
Applicant: Facebook, Inc.
Inventor： Krishna Gomadam , Djordje Tujkovic , Sanjai Kohli
Abstract: Apparatuses, methods, and systems for charactering and selecting micro-routes between nodes of a wireless network are disclosed. One method includes wirelessly communicating between a first node and a second node through a wireless link formed by at least one micro-route, determining a condition of the at least one micro-route, and selecting at least one other micro-route for communication between the first node and the second node based on a level of correlation between the at least one micro-route and the at least one other micro-route, after determining the condition.
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公开(公告)号：US20190115956A1
公开(公告)日：2019-04-18
申请号：US16211504
申请日：2018-12-06
Applicant: Facebook, Inc
Inventor： Sanjai Kohli , Djordje Tujkovic , Krishna Gomadam
IPC: H04B7/0408 , H04B1/10 , H04B7/06
CPC classification number: H04B7/0408 , H04B1/1027 , H04B1/1036 , H04B7/0617 , H04W8/005 , H04W24/02 , H04W88/10
Abstract: Apparatuses, methods, and systems of a hybrid node are disclosed. One embodiment of the hybrid node includes a first sector and a second sector. The first sector is operative to transmit a signal through a predetermined transmission channel at each of a first plurality of transmit beam forming settings. The second sector is operative to receive the signal through the predetermined channel at a second plurality of receive beam forming settings for each of more than one of the first plurality of transmit beam forming settings. Further, the node is operative to measure a received signal quality of the received signal at each of the second plurality of receive beam forming settings of the second plurality of antenna elements, for each of the more than one of the first plurality of transmit beam forming settings of the first plurality of antenna elements.
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公开(公告)号：US10187125B2
公开(公告)日：2019-01-22
申请号：US15696278
申请日：2017-09-06
Applicant: Facebook, Inc.
Inventor： Sanjai Kohli , Djordje Tujkovic , Krishna Gomadam
Abstract: Apparatuses, methods, and systems of a hybrid node are disclosed. One embodiment of the hybrid node includes a first sector and a second sector. The first sector is operative to transmit a signal through a predetermined transmission channel at each of a first plurality of transmit beam forming settings. The second sector is operative to receive the signal through the predetermined channel at a second plurality of receive beam forming settings for each of more than one of the first plurality of transmit beam forming settings. Further, the node is operative to measure a received signal quality of the received signal at each of the second plurality of receive beam forming settings of the second plurality of antenna elements, for each of the more than one of the first plurality of transmit beam forming settings of the first plurality of antenna elements.
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公开(公告)号：US20180006686A1
公开(公告)日：2018-01-04
申请号：US15696278
申请日：2017-09-06
Applicant: Facebook, Inc.
Inventor： Sanjai Kohli , Djordje Tujkovic , Krishna Gomadam
IPC: H04B7/0408 , H04B1/10 , H04W8/00 , H04W24/02 , H04W88/10
CPC classification number: H04B7/0408 , H04B1/1027 , H04B1/1036 , H04B7/0617 , H04W8/005 , H04W24/02 , H04W88/10
Abstract: Apparatuses, methods, and systems of a hybrid node are disclosed. One embodiment of the hybrid node includes a first sector and a second sector. The first sector is operative to transmit a signal through a predetermined transmission channel at each of a first plurality of transmit beam forming settings. The second sector is operative to receive the signal through the predetermined channel at a second plurality of receive beam forming settings for each of more than one of the first plurality of transmit beam forming settings. Further, the node is operative to measure a received signal quality of the received signal at each of the second plurality of receive beam forming settings of the second plurality of antenna elements, for each of the more than one of the first plurality of transmit beam forming settings of the first plurality of antenna elements.
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公开(公告)号：US20170195215A1
公开(公告)日：2017-07-06
申请号：US15382682
申请日：2016-12-18
Applicant: Facebook, Inc.
Inventor： Krishna Gomadam , Djordje Tujkovic , Sanjai Kohli
IPC: H04L12/721 , H04L12/26 , H04L12/24
CPC classification number: H04L45/26 , H04B7/0695 , H04B7/088 , H04L41/12 , H04L43/08
Abstract: A wireless communication network includes a transmitting node and a receiving node configured to transmit and receive packets between the transmitting node and the receiving node through one or more of a plurality of predetermined micro-routes is disclosed. For an embodiment, the transmitting node is configured to retrieve a first micro-route, transmit packets in a first transmit beamforming direction associated with the first micro-route, transmit packets including one or more training signals in a second transmit beamforming direction associated with a second micro-route of the plurality of predetermined micro-routes that is different than the first transmit beamforming direction associated with the first micro-route, and receive feedback from the receiving node indicating that the second micro-route provides a better communication link than the first micro-route.
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