公开(公告)号：US20190281474A1

公开(公告)日：2019-09-12

申请号：US16277958

申请日：2019-02-15

Applicant: Facebook, Inc.

Inventor： Djordje Tujkovic

IPC: H04W24/02 ,  H04W8/00 ,  H04W72/04 ,  A61K38/17 ,  H04L12/24 ,  H04B7/06

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.

公开(公告)号：US10349337B2

公开(公告)日：2019-07-09

申请号：US16132805

申请日：2018-09-17

Applicant: Facebook, Inc.

Inventor： Nabeel Ahmed ,  Djordje Tujkovic

IPC: H04W40/34 ,  H04L12/803 ,  H04L12/801 ,  H04W28/02 ,  H04W8/00 ,  H04W72/04 ,  H04W88/12 ,  H04W84/18

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.

公开(公告)号：US20190097863A1

公开(公告)日：2019-03-28

申请号：US16174181

申请日：2018-10-29

Applicant: Facebook, Inc.

Inventor： Krishna Gomadam ,  Djordje Tujkovic

IPC: H04L27/34 ,  H04L27/18 ,  H04L27/26

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.

公开(公告)号：US20190075044A1

公开(公告)日：2019-03-07

申请号：US16174796

申请日：2018-10-30

Applicant: Facebook, Inc.

Inventor： Krishna Gomadam ,  Djordje Tujkovic ,  Sanjai Kohli

IPC: H04L12/721 ,  H04B7/06 ,  H04B7/08 ,  H04L12/24 ,  H04L12/26

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.

公开(公告)号：US10218069B2

公开(公告)日：2019-02-26

申请号：US14790847

申请日：2015-07-02

Applicant: Facebook, Inc.

Inventor： Krishna S. Gomadam ,  Djordje Tujkovic ,  Sanjai Kohil

IPC: H01Q3/34 ,  H01Q3/28 ,  H01Q3/26 ,  H01Q21/00

Abstract: Systems and associated methods for improved beamforming of the phase array antenna are disclosed herein. In one embodiment, a communication system for wireless signals has a phase array antenna having a plurality of individual antennas and a plurality of electrically conductive traces. The individual traces electrically connect corresponding individual antennas with a transmitter. The lengths of individual traces Ti, Tk satisfy equation Abs ((Ti−Tk) mod (λ))

公开(公告)号：US10178581B2

公开(公告)日：2019-01-08

申请号：US15978148

申请日：2018-05-13

Applicant: Facebook, Inc.

Inventor： Djordje Tujkovic ,  Sanjai Kohli

IPC: H04W28/04 ,  H04B7/0413 ,  H04W72/08 ,  H04L1/20 ,  H04B7/026 ,  H04B7/06 ,  H04W84/12 ,  H04L1/18

Abstract: The disclosed embodiments seek to improve communication rates and lessen transmission errors between nodes in a communication network. The disclosed embodiments seek to improve reception bandwidth using one or more of (1) a MAC wrapper configured to integrate incoming data across sector arrays for use by the existing chipsets, and/or (2) a new interface modification to the chip design facilitating integrated log likelihood ratio processing from across multiple sector arrays. Sector coverage may be deliberately overlapped using the dynamic diversity achieved by the embodiments to compensate for environmental factors.

公开(公告)号：US10116375B2

公开(公告)日：2018-10-30

申请号：US15604943

申请日：2017-05-25

Applicant: Facebook, Inc.

Inventor： Sanjai Kohli ,  Djordje Tujkovic ,  Krishna Gomadam

IPC: H04B7/08 ,  H04B7/06

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.

公开(公告)号：US20180270706A1

公开(公告)日：2018-09-20

申请号：US15978148

申请日：2018-05-13

Applicant: Facebook, Inc.

Inventor： Djordje Tujkovic ,  Sanjai Kohli

IPC: H04W28/04 ,  H04W72/08 ,  H04B7/0413 ,  H04L1/20 ,  H04W84/12

CPC classification number: H04W28/04 ,  H04B7/026 ,  H04B7/0413 ,  H04B7/0617 ,  H04L1/1845 ,  H04L1/20 ,  H04W72/082 ,  H04W84/12

Abstract: The disclosed embodiments seek to improve communication rates and lessen transmission errors between nodes in a communication network. The disclosed embodiments seek to improve reception bandwidth using one or more of (1) a MAC wrapper configured to integrate incoming data across sector arrays for use by the existing chipsets, and/or (2) a new interface modification to the chip design facilitating integrated log likelihood ratio processing from across multiple sector arrays. Sector coverage may be deliberately overlapped using the dynamic diversity achieved by the embodiments to compensate for environmental factors.

公开(公告)号：US09998949B2

公开(公告)日：2018-06-12

申请号：US14986422

申请日：2015-12-31

Applicant: Facebook, Inc.

Inventor： Djordje Tujkovic ,  Sanjai Kohli

IPC: H04W28/04 ,  H04W72/08 ,  H04L1/20 ,  H04B7/0413 ,  H04W84/12

CPC classification number: H04W28/04 ,  H04B7/026 ,  H04B7/0413 ,  H04B7/0617 ,  H04L1/20 ,  H04W72/082 ,  H04W84/12

Abstract: The disclosed embodiments seek to improve communication rates and lessen transmission errors between nodes in a communication network. The disclosed embodiments seek to improve reception bandwidth using one or more of (1) a MAC wrapper configured to integrate incoming data across sector arrays for use by the existing chipsets, and/or (2) a new interface modification to the chip design facilitating integrated log likelihood ratio processing from across multiple sector arrays. Sector coverage may be deliberately overlapped using the dynamic diversity achieved by the embodiments to compensate for environmental factors.

公开(公告)号：US20180069796A1

公开(公告)日：2018-03-08

申请号：US15255355

申请日：2016-09-02

Applicant: Facebook, Inc.

Inventor： Nabeel Ahmed ,  Djordje Tujkovic

IPC: H04L12/803 ,  H04L12/801 ,  H04W28/02

CPC classification number: H04W40/34 ,  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.