公开(公告)号：US10177870B2

公开(公告)日：2019-01-08

申请号：US15248378

申请日：2016-08-26

Applicant: Facebook, Inc.

Inventor： Vish Ponnampalam ,  Krishna Gomadam ,  Djordje Tujkovic

IPC: H04J11/00 ,  H04J13/16 ,  H04J13/00 ,  H04L25/03

Abstract: Apparatuses, methods, and systems of assigning codes are disclosed. One method includes selecting a plurality of available codes, grouping links of a wireless network into a plurality of groups based on connectivity of the links between sectors of the wireless network, characterizing interference between at least one link of a first group of the plurality of groups and at least one link of a second group of the plurality of groups, and assigning at least one code of the plurality of available codes to the first group and at least one other code of the plurality of available codes to the second group based on the characterizing of the interference.

公开(公告)号：US10148557B2

公开(公告)日：2018-12-04

申请号：US15382682

申请日：2016-12-18

Applicant: Facebook, Inc.

Inventor： Krishna Gomadam ,  Djordje Tujkovic ,  Sanjai Kohli

IPC: H04B7/00 ,  H04L12/721 ,  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：US20180007718A1

公开(公告)日：2018-01-04

申请号：US15196340

申请日：2016-06-29

Applicant: Facebook, Inc.

Inventor： Djordje Tujkovic ,  Krishna Gomadam ,  Sanjai Kohli

IPC: H04W76/02 ,  H04W72/04 ,  H04B7/06

CPC classification number: H04W76/10 ,  H04B7/0617

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.

公开(公告)号：US09787382B2

公开(公告)日：2017-10-10

申请号：US15478561

申请日：2017-04-04

Applicant: Facebook, Inc.

Inventor： Djordje Tujkovic ,  Krishna Gomadam

IPC: H04B7/06 ,  H01Q3/34 ,  H01Q1/22

CPC classification number: H04B7/0617 ,  H01Q1/2291 ,  H01Q3/34

Abstract: A system for transmitting information between nodes in a point-to-point wireless communication system. The system includes a node with an antenna array and a beamformer that is controllable to orient a main lobe of the antenna array in a desired direction. A spacing of the plurality of antenna elements in the array is adjustable to control a direction of a grating lobe of the antenna array to complete a communication link with a node in the network. Signals are simultaneously transmitted in the direction of the main lobe and the grating lobe to different nodes in the network.

公开(公告)号：US20170195916A1

公开(公告)日：2017-07-06

申请号：US15382685

申请日：2016-12-18

Applicant: Facebook, Inc.

Inventor： Djordje Tujkovic ,  Krishna Gomadam ,  Vish Ponnampalam

IPC: H04W28/06 ,  H04W28/04 ,  H04K3/00 ,  H04W76/02

CPC classification number: H04W76/14 ,  H04K3/825 ,  H04L27/2692 ,  H04L2025/03789 ,  H04L2025/03796 ,  H04W28/04

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.