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公开(公告)号：US20190239139A1
公开(公告)日：2019-08-01
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：US10356826B2
公开(公告)日：2019-07-16
申请号：US15196340
申请日：2016-06-29
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 sector that includes a first transceiver and a first plurality of antennas operative to form a beam directed to a first sector of a second node. The node further includes a second sector that includes a second transceiver and a second plurality of antennas operative to form a beam directed to a second sector of the second node. For at least one time slot of a plurality of time slots, one of the first transceiver or the second transceiver is operative to transmit a first communication signal to the second node while the other of the first transceiver or the second transceiver is operative to receive a second communication signal from the second node.
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公开(公告)号：US10299186B2
公开(公告)日：2019-05-21
申请号：US15392910
申请日：2016-12-28
Applicant: Facebook, Inc.
Inventor： Djordje Tujkovic
Abstract: In one embodiment, a method includes, by a controller of a multi-hop wireless network, accessing an interference map indicating interference among network nodes of the multi-hop wireless network. The controller may generate a factor-graph representation of the multi-hop wireless network that includes a first set of vertices which represent variable nodes and correspond to transmitting (TX) sectors of the network nodes and a second set of vertices which represent function nodes and correspond to receiving (RX) sectors of the network nodes. The controller may determine a time-slot-exclusion schedule for one or more network nodes of the multi-hop wireless network to reduce interference among network nodes of the multi-hop wireless network, wherein only certain sectors of the particular network nodes may transmit or receive during certain time slots in the time-slot-exclusion schedule.
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公开(公告)号：US20190123969A1
公开(公告)日：2019-04-25
申请号：US16210316
申请日：2018-12-05
Applicant: Facebook, Inc.
Inventor： Nabeel Ahmed , Djordje Tujkovic , Sanjai Kohli
Abstract: Apparatuses, methods, and systems for controlling a hybrid node are disclosed. A network includes a controller, a plurality of first nodes, wherein sectors of the plurality of first nodes are configured to simultaneously transmit wireless signals or receive wireless signals, a plurality of second nodes, wherein sectors of the plurality of second nodes are configured to simultaneously transmit wireless signals when all of the one or more sectors of the plurality of first nodes are receiving wireless signals, or receive wireless signals when all of the one or more sectors of the plurality of first nodes are transmitting wireless signals, and a plurality of hybrid nodes, wherein the controller is operative to select at least a subset of sectors of the plurality of hybrid nodes to operate as one of the plurality of first nodes or to operate as one of the plurality of second nodes.
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公开(公告)号：US10212614B2
公开(公告)日：2019-02-19
申请号：US15392882
申请日：2016-12-28
Applicant: Facebook, Inc.
Inventor： Djordje Tujkovic
Abstract: In one embodiment, a method includes, by each of one or more network nodes of a multi-hop wireless network that are configured as initiators: receiving from a central controller an address of a particular network node that is configured as a responder. Using the address and by adjusting beamforming weights, the initiator may transmit a message to establish a wireless connection with a particular network node that is configured as a responder. Each responder may adjust its beamforming to receive a message from one of the initiators addressed to the responder to establish a wireless connection with the responder. When the responder receives the message from the initiator addressed to the responder, the responder may respond to the initiator to establish a wireless connection with the initiator.
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Patent Agency Ranking
公开(公告)号：US10193648B2
公开(公告)日：2019-01-29
申请号：US15248297
申请日：2016-08-26
Applicant: Facebook, Inc.
Inventor： Krishna Gomadam , Djordje Tujkovic , Vish Ponnampalam
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：US20190021042A1
公开(公告)日：2019-01-17
申请号：US16132805
申请日：2018-09-17
Applicant: Facebook, Inc.
Inventor： Nabeel Ahmed , Djordje Tujkovic
IPC: H04W40/34
CPC classification number: H04W40/34 , H04L47/125 , H04L47/17 , H04W8/00 , H04W28/0268 , H04W72/0453 , H04W84/18 , H04W88/12
Abstract: Apparatuses, methods, and systems for allocating capacity for links of a multi-hop distributed network are disclosed. One method includes allocating capacity, by a central controller, for each link of a plurality of links of a sector of a wireless network based at least in part on a number of devices directly or indirectly wirelessly connected to the sector, providing the allocated capacity for each link to the sector, and adjusting, by the sector, the allocated capacity for at least one link of the plurality of links of the sector.
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公开(公告)号：US10181980B2
公开(公告)日：2019-01-15
申请号：US15338338
申请日：2016-10-29
Applicant: Facebook, Inc.
Inventor： Nabeel Ahmed , Djordje Tujkovic , Sanjai Kohli
Abstract: Apparatuses, methods, and systems for controlling a hybrid node are disclosed. A network includes a plurality of first nodes, wherein sectors of the plurality of first nodes are configured to simultaneously transmit wireless signals or receive wireless signals, a plurality of second nodes, wherein sectors of the plurality of second nodes are configured to simultaneously transmit wireless signals when all of the one or more sectors of the plurality of first nodes are receiving wireless signals, or receive wireless signals when all of the one or more sectors of the plurality of first nodes are transmitting wireless signals, and a plurality of hybrid nodes, wherein at least a subset of sectors of the plurality of hybrid nodes are controllably selected to operate as one of the plurality of first nodes or to operate as one of the plurality of second nodes.
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公开(公告)号：US10149337B2
公开(公告)日：2018-12-04
申请号：US15382685
申请日：2016-12-18
Applicant: Facebook, Inc.
Inventor： Djordje Tujkovic , Krishna Gomadam , Vish Ponnampalam
Abstract: Methods, apparatuses, and systems for transmitting information between nodes in a point-to-point wireless communication network is disclosed. One method includes constructing, by a sector of a transmitting node, a packet including data that is to be transmitted to a receiving node in the wireless network, wherein the constructed packet includes a short training field, a channel estimation field, a header field, and a data payload, and transmitting by the sector of the transmitting node, a jamming code before the short training field of the constructed packet, thereby reducing a likelihood that the receiving node will decode a different short training field of an interfering packet before the receiving node decodes the short training field of the constructed packet.
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公开(公告)号：US20180123893A1
公开(公告)日：2018-05-03
申请号：US15338338
申请日：2016-10-29
Applicant: Facebook Inc.
Inventor： Nabeel Ahmed , Djordje Tujkovic , Sanjai Kohli
CPC classification number: H04L41/12 , H04L41/0816 , H04L41/0893 , H04W16/10 , H04W40/16 , H04W72/0446 , H04W72/082 , H04W84/00
Abstract: Apparatuses, methods, and systems for controlling a hybrid node are disclosed. A network includes a plurality of first nodes, wherein sectors of the plurality of first nodes are configured to simultaneously transmit wireless signals or receive wireless signals, a plurality of second nodes, wherein sectors of the plurality of second nodes are configured to simultaneously transmit wireless signals when all of the one or more sectors of the plurality of first nodes are receiving wireless signals, or receive wireless signals when all of the one or more sectors of the plurality of first nodes are transmitting wireless signals, and a plurality of hybrid nodes, wherein at least a subset of sectors of the plurality of hybrid nodes are controllably selected to operate as one of the plurality of first nodes or to operate as one of the plurality of second nodes.
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