公开(公告)号：US20100302991A1

公开(公告)日：2010-12-02

申请号：US12749686

申请日：2010-03-30

申请人： Ahmad Jalali ,  Harris S. Simon

发明人： Ahmad Jalali ,  Harris S. Simon

IPC分类号： H04W88/02 ,  H04L1/02 ,  H04B1/02

CPC分类号： H04B7/0608 ,  H04B7/061

摘要： An apparatus and method inexpensively implements spatial diversity in a wireless terminal for use in a satellite communication system. A single transmit chain is coupled to a plurality of antennas through a switch for sequentially selecting each of the antennas during corresponding sub-frames of a data frame. Here, each sub-frame is adapted for transmission of a respective portion of an encoded information packet, encoded such that the entire information packet is recoverable from any one of the sub-frames.

摘要翻译： 一种在卫星通信系统中使用的无线终端中廉价地实现空间分集的装置和方法。 单个发射链通过开关耦合到多个天线，用于在数据帧的相应子帧期间顺序选择每个天线。 这里，每个子帧适于传输编码的信息分组的相应部分，被编码为使得整个信息分组可从任何一个子帧中恢复。

公开(公告)号：US20210392558A1

公开(公告)日：2021-12-16

申请号：US16900572

申请日：2020-06-12

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04W36/30 ,  H04L5/00 ,  H04W24/08 ,  H04L1/18

摘要： A User Equipment (UE) measures the signal quality of a dedicated downlink reference signal transmitted by a Base Station (BS) to the UE. If the signal quality is below a threshold, the UE initiates a measurement procedure to determine a target handover BS. The UE sequentially transmits an uplink reference signal on each of UE's beams. The BSs estimate the Angle of Arrival (AoA) of any received uplink reference signal, form a dedicated downlink beam pointed toward the AoA and transmit an acknowledgment to the UE on the corresponding beam. The UE estimates the signal quality of the received acknowledgements on the different UE beams, and transmits a handover message on the UE beam on which the acknowledgement with the highest signal quality is received. The uplink reference signal may comprise of a single preamble. The acknowledgement may comprise of a preamble, or a preamble followed by a small payload.

公开(公告)号：US10389431B2

公开(公告)日：2019-08-20

申请号：US16205641

申请日：2018-11-30

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04B7/212 ,  H04B7/185 ,  H04L27/36 ,  H04W72/04 ,  H04W72/08 ,  H04W16/28 ,  H04W84/00

摘要： An air interface for a terrestrial communications network for providing broadband internet access to aerial platforms is described. In some embodiments, systems and methods are described for efficient retransmission of data packets that are not received correctly. In other embodiments, systems and methods are described for determining the modulation constellation and error correction code rate used in transmitting a data packet to maximize data rates. In another set of embodiments, the retransmission scheme and modulation constellation and error correction code rate determination are jointly optimized to maximize data rates.

公开(公告)号：US09807569B2

公开(公告)日：2017-10-31

申请号：US14533756

申请日：2014-11-05

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04W24/00 ,  H04W4/04 ,  G01S5/02 ,  G06Q10/08 ,  G01S5/14 ,  G01S13/87 ,  H04B7/185 ,  H04W64/00

CPC分类号： H04W4/046 ,  G01S5/02 ,  G01S5/14 ,  G01S13/876 ,  G06Q10/0833 ,  H04B7/18502 ,  H04W64/003

摘要： An automated method of determining a location of an aerial platform is described. The method includes: transmitting, from the aerial platform, a first pilot signal; receiving, at a set of ground devices, the first pilot signal; determining a first set of values based on measurements associated with the first pilot signal; and calculating a position of the aerial platform based at least partly on the first set of values. An automated method adapted to determine a location of a ground device includes: transmitting, from the ground device, a first pilot signal; receiving, at each aerial platform in a set of aerial platforms, the first pilot signal; determining a first set of values based on measurements associated with the first pilot signal; and calculating a position of the ground device based at least partly on the first set of values. A system adapted to provide location information is described.

公开(公告)号：US09742484B2

公开(公告)日：2017-08-22

申请号：US14284079

申请日：2014-05-21

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04B7/185 ,  H04W36/30 ,  B64C39/02 ,  H04W84/06 ,  H04W24/02 ,  H04W48/16 ,  H04W88/16 ,  H04W84/00

CPC分类号： H04B7/18504 ,  B64C39/024 ,  B64C2201/122 ,  H04B7/1555 ,  H04B7/18506 ,  H04B7/18528 ,  H04B7/18539 ,  H04B7/18541 ,  H04B7/18543 ,  H04B7/18554 ,  H04B7/18578 ,  H04W24/02 ,  H04W36/0005 ,  H04W36/0016 ,  H04W36/0083 ,  H04W36/12 ,  H04W36/30 ,  H04W36/36 ,  H04W48/16 ,  H04W84/005 ,  H04W84/06 ,  H04W88/16 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/164 ,  Y02D70/446

摘要： Systems and methods are described that use the downlink and uplink frequency bands of the fixed satellite service (FSS) and direct broadcast service (DBS) systems to provide broadband access to aerial platforms including aircraft, drones, and unmanned aerial vehicles (UAVs) such as balloons. The secondary service aerial platform transmitters are configured to avoid interference into the primary satellite service receivers. The aerial platform may be able to detect and connect to the cell site with the strongest signal. The aerial platform may be able to handoff from one cell site to another. Systems and methods are described that provide broadband access to ground terminal via aerial platforms such as drones and UAVs such as balloons.

公开(公告)号：US09385803B2

公开(公告)日：2016-07-05

申请号：US14228640

申请日：2014-03-28

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04B7/185 ,  H04W40/22 ,  H04W84/06

CPC分类号： H04B7/18506 ,  H04B7/10 ,  H04W28/0226 ,  H04W28/0231 ,  H04W36/08 ,  H04W40/22 ,  H04W84/06

摘要： An air to ground (ATG) broadband access system is described. The system includes: a plurality of cell sites that together form a service coverage area, each cell site adapted to generate a local coverage area, each sell site including: multiple antenna fixtures situated at a lower corner of the local coverage area, where the local coverage area includes multiple sectors and each antenna fixture is associated with a different sector than each other antenna fixture; and a radio sub-system connected to each antenna fixture, the radio sub-system including a transmitter capable of modulating and transmitting signals through the antenna fixture and a receiver capable of demodulating and decoding signals received through the antenna fixture; and at least one aerial platform including: at least one antenna fixture capable of forming beams toward the cell site; and a radio sub-system capable of modulating and transmitting signals and demodulating and decoding signals.

摘要翻译： 描述了空对地（ATG）宽带接入系统。 该系统包括：多个小区站点，其一起形成服务覆盖区域，每个小区站点适于生成本地覆盖区域，每个销售站点包括：位于本地覆盖区域的下角的多个天线固定装置，其中本地 覆盖区域包括多个扇区，并且每个天线固定装置与彼此天线固定装置的不同扇区相关联; 以及连接到每个天线固定装置的无线电子系统，所述无线电子系统包括能够通过天线装置调制和发送信号的发射机和能够解调和解码通过天线固定装置接收的信号的接收机; 以及至少一个空中平台，包括：至少一个天线固定装置，其能够朝向所述小区站点形成波束; 以及能够调制和发送信号以及解调和解码信号的无线电子系统。

公开(公告)号：US20150237569A1

公开(公告)日：2015-08-20

申请号：US14609207

申请日：2015-01-29

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04W48/16 ,  B64C39/02

CPC分类号： H04B7/18504 ,  B64C39/024 ,  B64C2201/122 ,  H04B7/1555 ,  H04B7/18506 ,  H04B7/18528 ,  H04B7/18539 ,  H04B7/18541 ,  H04B7/18543 ,  H04B7/18554 ,  H04B7/18578 ,  H04W24/02 ,  H04W36/0005 ,  H04W36/0016 ,  H04W36/0083 ,  H04W36/12 ,  H04W36/30 ,  H04W36/36 ,  H04W48/16 ,  H04W84/005 ,  H04W84/06 ,  H04W88/16 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/164 ,  Y02D70/446

摘要： A communication system is described. The system includes: at least one gateway able to provide broadband connectivity, a set of ground terminals, and a set of aerial platforms, where at least one aerial platform is able to communicate with at least one gateway using radio frequencies, each aerial platform is able to communicate with ground terminals using radio frequencies, and each aerial platform is able to communicate with each other aerial platform using radio frequencies. An automated method for determining a beam direction for communication among UAVs includes: dividing a space around the UAV into multiple sub-regions, and, iteratively: selecting a sub-region from among the multiple sub-regions; pointing a signal toward the sub-region; and determining whether a signal is received from another UAV, until all sub-regions from among the multiple sub-regions have been selected.

摘要翻译： 描述通信系统。 该系统包括：能够提供宽带连接的至少一个网关，一组接地终端和一组高空作业平台，其中至少一个空中平台能够使用无线电频率与至少一个网关通信，每个空中平台是 能够使用无线电频率与地面终端通信，并且每个空中平台能够使用无线电频率与彼此的空中平台通信。 用于确定UAV之间的通信的波束方向的自动化方法包括：将UAV周围的空间划分成多个子区域，并且迭代地：从多个子区域中选择子区域; 指向子区域的信号; 以及确定是否从另一UAV接收到信号，直到所述多个子区域中的所有子区域被选择为止。

公开(公告)号：US20150236780A1

公开(公告)日：2015-08-20

申请号：US14284079

申请日：2014-05-21

申请人： Ahmad Jalali

发明人： Ahmad Jalali

IPC分类号： H04B7/185

CPC分类号： H04B7/18504 ,  B64C39/024 ,  B64C2201/122 ,  H04B7/1555 ,  H04B7/18506 ,  H04B7/18528 ,  H04B7/18539 ,  H04B7/18541 ,  H04B7/18543 ,  H04B7/18554 ,  H04B7/18578 ,  H04W24/02 ,  H04W36/0005 ,  H04W36/0016 ,  H04W36/0083 ,  H04W36/12 ,  H04W36/30 ,  H04W36/36 ,  H04W48/16 ,  H04W84/005 ,  H04W84/06 ,  H04W88/16 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/164 ,  Y02D70/446

摘要： Systems and methods are described that use the downlink and uplink frequency bands of the fixed satellite service (FSS) and direct broadcast service (DBS) systems to provide broadband access to aerial platforms including aircraft, drones, and unmanned aerial vehicles (UAVs) such as balloons. The secondary service aerial platform transmitters are configured to avoid interference into the primary satellite service receivers. The aerial platform may be able to detect and connect to the cell site with the strongest signal. The aerial platform may be able to handoff from one cell site to another. Systems and methods are described that provide broadband access to ground terminal via aerial platforms such as drones and UAVs such as balloons.

摘要翻译： 描述了使用固定卫星服务（FSS）和直接广播服务（DBS）系统的下行链路和上行链路频带来提供对包括飞机，无人机和无人机（UAV）在内的空中平台的宽带接入的系统和方法，例如 气球 二级服务空中平台发射机被配置为避免干扰到主卫星接收机。 空中平台可能能够以最强的信号检测并连接到小区站点。 空中平台可能能够从一个小区站点切换到另一个小区站点。 描述了通过空中平台（例如无人机和无人机例如气球）向接地终端提供宽带接入的系统和方法。

公开(公告)号：US08699465B2

公开(公告)日：2014-04-15

申请号：US12627974

申请日：2009-11-30

申请人： Bin Tian ,  Ahmad Jalali ,  Srikant Jayaraman ,  June Namgoong

发明人： Bin Tian ,  Ahmad Jalali ,  Srikant Jayaraman ,  June Namgoong

IPC分类号： H04W36/30 ,  H04W84/08 ,  H04W74/04

CPC分类号： H04B7/18543 ,  H04L1/0002 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/08 ,  Y02D50/10

摘要： In a synchronous application to control forward link (FL) data rates in a satellite system, user equipment (UE) repeatedly transmits a quality control measurement (QCM) index during a QCM period. During this QCM period, the data rate cannot change. The associated satellite transmits at a new rate corresponding to the QCM index. The UE knows that it will begin receiving new data at the new rate after a QCM delay. In an asynchronous application, a satellite transmits a rate change signal over a FL rate indication channel (RICH). A UE monitors the FL RICH for this signal. When the signal quality is to be low, the satellite sends only a single bit of the QCM index over a first orthogonal channel. When the signal quality is not low, the satellite transmits each bit of the QCM index in a separate orthogonal channel of the FL RICH.

摘要翻译： 在用于在卫星系统中控制前向链路（FL）数据速率的同步应用中，用户设备（UE）在QCM周期期间重复发送质量控制测量（QCM）索引。 在这个QCM期间，数据速率不能改变。 相关联的卫星以对应于QCM指数的新速率发射。 UE知道在QCM延迟之后，它将以新的速率开始接收新的数据。 在异步应用中，卫星通过FL速率指示信道（RICH）发送速率改变信号。 UE监视该信号的FL RICH。 当信号质量低时，卫星在第一个正交信道上只发送一个QCM索引的比特。 当信号质量不低时，卫星在FL RICH的单独的正交信道中发送QCM索引的每个比特。

公开(公告)号：US08649755B2

公开(公告)日：2014-02-11

申请号：US13329174

申请日：2011-12-16

申请人： Mark L. Moeglein ,  Ahmad Jalali ,  Bin Tian ,  Scott King

发明人： Mark L. Moeglein ,  Ahmad Jalali ,  Bin Tian ,  Scott King

IPC分类号： H04B1/16

CPC分类号： H04W52/0245 ,  H04W4/02 ,  H04W52/0229 ,  Y02B60/50 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/162 ,  Y02D70/164 ,  Y02D70/22

摘要： Techniques are provided which may be implemented in various methods, apparatuses, and/or articles of manufacture for use by a device that is operable in a plurality of modes, including “higher power mode” and a “lower power mode”. A timing circuit may be set based, at least in part, on a phase value obtained from a signal from a ground-based transmitter, and operation of the device may be selectively transitioned to a lower power mode wherein the device uses the timing circuit. In certain example implementations, operation of the device to the lower power mode may be selectively transition and based, at least in part, on a determination that one or more attribute values satisfy a profile test indicating that the electronic device is likely to be within a characterized environment, and/or a determination that the electronic device is likely to be in a constrained motion state.

摘要翻译： 提供了可以以包括“较高功率模式”和“较低功率模式”在多种模式中可操作的装置使用的各种方法，装置和/或制品的实施方式。 可以至少部分地基于从基于地面的发射机的信号获得的相位值来设置定时电路，并且可以选择性地将设备的操作转换到其中设备使用定时电路的较低功率模式。 在某些示例实现中，设备到较低功率模式的操作可以选择性地转换并且至少部分地基于确定一个或多个属性值满足表示电子设备可能在 和/或确定电子设备可能处于受限运动状态。