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公开(公告)号：US10236726B2
公开(公告)日：2019-03-19
申请号：US15294692
申请日：2016-10-15
Applicant: Facebook, Inc.
Inventor： Talha Ahmed Khan , Ali Yazdan Panah
Abstract: Apparatuses, methods, and systems for jointly selecting a plurality of antennas and a transmission power level, for transmitting a wireless energy transfer (WET) signal from a base station to a device are disclosed. One apparatus includes a base station, wherein the base station includes a plurality of N antennas configured to transmit and receive electromagnetic signals, and a controller connected to the plurality of N antennas through a plurality of RF (radio frequency) chains. The controller is configured to jointly select a plurality of M of the plurality of N antennas and a transmission power level, for transmitting a wireless energy transfer (WET) signal from the base station to a device based on an activation threshold of the device and a saturation level of the device.
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公开(公告)号：US10070299B2
公开(公告)日：2018-09-04
申请号：US15701134
申请日：2017-09-11
Applicant: Facebook, Inc.
Inventor： Ali Yazdan Panah
Abstract: Some embodiments includes a method of forming a local area mesh network at a computing device. The method can include: receiving a connection request from a first neighbor device utilizing a Wi-Fi Direct (WFD) discovery protocol; forming a first peer-to-peer (P2P) connection with the first neighbor device utilizing WFD, wherein the computing device is set as a group owner of the first P2P connection; generating a notice of absence schedule to send to the first neighbor device indicating suspension intervals of the first P2P connection during which the computing device is suspended from being the group owner of the first P2P connection; forming a second P2P connection with a second neighbor device utilizing WFD, wherein the second neighbor device is set as a group owner of the second P2P connection, wherein the first P2P connection and the second P2P connection constitute part of a mesh communication network.
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公开(公告)号：US20160021688A1
公开(公告)日：2016-01-21
申请号：US14332217
申请日：2014-07-15
Applicant: Facebook, Inc.
Inventor： Ali Yazdan Panah
Abstract: Some embodiments includes a method of forming a local area mesh network at a computing device. The method can include: receiving a connection request from a first neighbor device utilizing a Wi-Fi Direct (WFD) discovery protocol; forming a first peer-to-peer (P2P) connection with the first neighbor device utilizing WFD, wherein the computing device is set as a group owner of the first P2P connection; generating a notice of absence schedule to send to the first neighbor device indicating suspension intervals of the first P2P connection during which the computing device is suspended from being the group owner of the first P2P connection; forming a second P2P connection with a second neighbor device utilizing WFD, wherein the second neighbor device is set as a group owner of the second P2P connection, wherein the first P2P connection and the second P2P connection constitute part of a mesh communication network.
Abstract translation: 一些实施例包括在计算设备处形成局域网网络的方法。 该方法可以包括：利用Wi-Fi直接（WFD）发现协议从第一邻居设备接收连接请求; 使用WFD与所述第一邻居设备形成第一对等（P2P）连接，其中所述计算设备被设置为所述第一P2P连接的组所有者; 产生不存在时间表的通知，向所述第一邻居设备发送指示所述计算设备暂停的所述第一P2P连接的暂停间隔作为所述第一P2P连接的所述组的所有者; 与利用WFD的第二邻居设备形成第二P2P连接，其中所述第二邻居设备被设置为所述第二P2P连接的组所有者，其中所述第一P2P连接和所述第二P2P连接构成网状通信网络的一部分。
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公开(公告)号：US10263810B2
公开(公告)日：2019-04-16
申请号：US15619399
申请日：2017-06-09
Applicant: Facebook, Inc.
Inventor： Ali Yazdan Panah , Karthik Yogeeswaran
IPC: H04L25/02 , H04L5/00 , H04B7/0413 , H04B7/0452 , H04B7/0456
Abstract: Embodiments are disclosed for improving precoder-matrix computations in a MIMO base station. Particularly, various embodiments implement methods for interpolating pilot signal results from multiple calibration transmissions. A subchannel of a resource block is selected as an anchor subchannel and the channel matrices for each subchannel are then determined using weights associated with each subchannel that are determined from the subchannel's distance away from the anchor subchannel. Selecting variable subchannels allows the accuracy of the channels matrices for the subchannels to be tailored where more accuracy is desired.
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公开(公告)号：US10080111B2
公开(公告)日：2018-09-18
申请号：US14662717
申请日：2015-03-19
Applicant: Facebook, Inc.
Inventor： Viswanath Poosala , Ali Yazdan Panah
IPC: H04W4/12 , G06F3/16 , G06F3/0481 , G06F3/0484 , G06F3/0488
CPC classification number: H04W4/12 , G06F3/04817 , G06F3/04842 , G06F3/0488 , G06F3/165
Abstract: Techniques for securing the delivery of an audio message on a device are described. A method may include presenting a visual representation associated with an audio file in a user interface view of an application executing on a first mobile device and receiving a control directive to select the visual representation. The method may include retrieving, from a data store, an indicator of the audio file associated with the selected visual representation; constructing, by the application, a first message comprising a first field to hold an electronic message address for a recipient and a second field to hold the indicator of the audio file associated with the selected visual representation; and sending the first message to the electronic message address of the recipient for delivery to a destination second mobile device. Other embodiments are described and claimed.
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Patent Agency Ranking
公开(公告)号：US20180019849A1
公开(公告)日：2018-01-18
申请号：US15655673
申请日：2017-07-20
Applicant: Facebook, Inc.
Inventor： Karthik Yogeeswaran , Ali Yazdan Panah
CPC classification number: H04L5/0048 , H04B7/0417 , H04B7/0452 , H04B7/0626 , H04B7/0628
Abstract: Massive MIMO systems provide impressive spectral efficiencies through beam forming techniques such as Zero-Forcing Precoding (ZFP). Unfortunately, ZFP imposes a considerable computational burden for each additional user. Relationships between the antennas, the users, and the environment must be rapidly, and accurately, reassessed during ZFP on an ongoing basis. Brute force approaches to these reassessments may be unfeasible for certain hardware and design conditions. Accordingly, various of the proposed embodiments implement representational optimizations which reduce the computational burden for each reassessment. Some embodiments employ “dynamic sectorization”, whereby the serviced environment is divided into regions and the corresponding representation is modified to reduce the computations of each reassessment. A backplane, antenna separation/directivity and thresholds for environment noise may each be adjusted to reduce the computational burden.
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公开(公告)号：US20170373885A1
公开(公告)日：2017-12-28
申请号：US15619399
申请日：2017-06-09
Applicant: Facebook, Inc.
Inventor： Ali Yazdan Panah , Karthik Yogeeswaran
IPC: H04L25/02 , H04L5/00 , H04B7/0413
CPC classification number: H04L25/0204 , H04B7/0452 , H04B7/0478 , H04L5/0048 , H04L25/0232
Abstract: Embodiments are disclosed for improving precoder-matrix computations in a MIMO base station. Particularly, various embodiments implement methods for interpolating pilot signal results from multiple calibration transmissions. A subchannel of a resource block is selected as an anchor subchannel and the channel matrices for each subchannel are then determined using weights associated with each subchannel that are determined from the subchannel's distance away from the anchor subchannel. Selecting variable subchannels allows the accuracy of the channels matrices for the subchannels to be tailored where more accuracy is desired.
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公开(公告)号：US09705707B1
公开(公告)日：2017-07-11
申请号：US15065679
申请日：2016-03-09
Applicant: Facebook, Inc.
Inventor： Ali Yazdan Panah , Karthik Yogeeswaran
IPC: H04L25/02 , H04L5/00 , H04B7/0413
CPC classification number: H04L25/0204 , H04B7/0452 , H04B7/0478 , H04L5/0048 , H04L25/0232
Abstract: Embodiments are disclosed for improving precoder-matrix computations in a MIMO base station. Particularly, various embodiments implement methods for interpolating pilot signal results from multiple calibration transmissions. A subchannel of a resource block is selected as an anchor subchannel and the channel matrices for each subchannel are then determined using weights associated with each subchannel that are determined from the subchannel's distance away from the anchor subchannel. Selecting variable subchannels allows the accuracy of the channels matrices for the subchannels to be tailored where more accuracy is desired.
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公开(公告)号：US09661552B2
公开(公告)日：2017-05-23
申请号：US14534709
申请日：2014-11-06
Applicant: Facebook, Inc.
Inventor： Karthik Yogeeswaran , Ali Yazdan Panah , Yael Maguire
CPC classification number: H04W40/246 , H04W36/12 , H04W40/04 , H04W40/20
Abstract: Various of the disclosed embodiments relate to line-of-sight (LOS), e.g., optical, based networks. Systems and methods are provided for connecting nodes based on their topological position in a line-of-sight communication network. Some embodiments may represent each node by a “backbone” and a “subnetwork” rank. The determination of a node's rank can prevent the formation of isolated “islands” of nodes, cut off from the backbone. The ranking can also provide a total ordering of nodes relative to the “fiberpop” node which can be used for healing and routing behaviors.
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公开(公告)号：US10237828B2
公开(公告)日：2019-03-19
申请号：US15294691
申请日：2016-10-15
Applicant: Facebook, Inc.
Inventor： Jeonghun Park , Sungwoo Park , Ali Yazdan Panah
Abstract: Apparatuses, methods, and systems for selecting an ADC for each RF chain of an RRU are disclosed. One embodiment of the RRU includes a plurality of antennas and a plurality of RF chains configured to receive a plurality of wireless signals, A plurality of outputs of the RRU connected to a front-haul, wherein the front-haul electrically connects the plurality of outputs of the RRU to a baseband unit (BBU), wherein each of the outputs is connected to an output of one of a plurality of ADCs. Further, the RRU selects a one of the plurality of ADCs having the plurality of ADC resolutions for each of the RF chains based on the capacity of the front-haul, a channel gain of each of the RF chains, and a performance parameter of the RRU. A switch connects each of the RF chains to a corresponding one of the plurality of ADCs.
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