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    Wireless handoffs between multiple wireless networks
    1.
    发明授权
    Wireless handoffs between multiple wireless networks 有权
    多个无线网络之间的无线切换

    公开(公告)号：US08811991B2

    公开(公告)日：2014-08-19

    申请号：US11413355

    申请日：2006-04-28

    申请人： Nikhil Jain ,  Avneesh Agrawal ,  Ahmad Jalali ,  Charles A. Bergan

    发明人： Nikhil Jain ,  Avneesh Agrawal ,  Ahmad Jalali ,  Charles A. Bergan

    IPC分类号： H04W36/00 ,  H04W36/14 ,  H04W88/06 ,  H04W80/00 ,  H04W92/02 ,  H04W84/04

    CPC分类号： H04W36/14 ,  H04W80/00 ,  H04W84/042 ,  H04W88/06 ,  H04W92/02

    摘要： A wireless communications device is disclosed. The wireless communications device is configured to support a call over a cellular network or an IP network to a remote communications device. The wireless communications device is further configured to handoff the call between the cellular network and the IP network. An Interworking Function (IWF) is configured to maintain a call between a wireless communications device and a communications device as the wireless communications device is handed off between a cellular network and an IP network.

    摘要翻译： 公开了一种无线通信设备。 无线通信设备被配置为支持通过蜂窝网络或IP网络到远程通信设备的呼叫。 无线通信设备还被配置为切换蜂窝网络和IP网络之间的呼叫。 互通功能（IWF）被配置为当无线通信设备在蜂窝网络和IP网络之间切换时，在无线通信设备和通信设备之间维持呼叫。

    Wireless handoffs between multiple wireless networks
    2.
    发明申请
    Wireless handoffs between multiple wireless networks 有权
    多个无线网络之间的无线切换

    公开(公告)号：US20060245395A1

    公开(公告)日：2006-11-02

    申请号：US11413355

    申请日：2006-04-28

    申请人： Nikhil Jain ,  Avneesh Agrawal ,  Ahmad Jalali ,  Charles Bergan

    发明人： Nikhil Jain ,  Avneesh Agrawal ,  Ahmad Jalali ,  Charles Bergan

    IPC分类号： H04Q7/00

    CPC分类号： H04W36/14 ,  H04W80/00 ,  H04W84/042 ,  H04W88/06 ,  H04W92/02

    摘要： A wireless communications device is disclosed. The wireless communications device is configured to support a call over a cellular network or an IP network to a remote communications device. The wireless communications device is further configured to handoff the call between the cellular network and the IP network. An Interworking Function (IWF) is configured to maintain a call between a wireless communications device and a communications device as the wireless communications device is handed off between a cellular network and an IP network.

    摘要翻译： 公开了一种无线通信设备。 无线通信设备被配置为支持通过蜂窝网络或IP网络到远程通信设备的呼叫。 无线通信设备还被配置为切换蜂窝网络和IP网络之间的呼叫。 互通功能（IWF）被配置为当无线通信设备在蜂窝网络和IP网络之间切换时，在无线通信设备和通信设备之间维持呼叫。

    SIGNALING AND PROCEDURES FOR FAST AND LOW OVERHEAD HANDOVER FOR MU MIMO SYSTEMS
    3.
    发明申请
    SIGNALING AND PROCEDURES FOR FAST AND LOW OVERHEAD HANDOVER FOR MU MIMO SYSTEMS 有权

    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.

    Air interface protocols for broadband access to aerial platforms
    4.
    发明授权
    Air interface protocols for broadband access to aerial platforms 有权

    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.

    Location based services provided via unmanned aerial vehicles (UAVs)
    5.
    发明授权
    Location based services provided via unmanned aerial vehicles (UAVs) 有权

    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.

    Provision of broadband access to airborne platforms
    7.
    发明授权
    Provision of broadband access to airborne platforms 有权
    提供宽带接入机载平台

    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。

    Unmanned Aerial Vehicle Communication Using Distributed Antenna Placement and Beam Pointing
    8.
    发明申请
    Unmanned Aerial Vehicle Communication Using Distributed Antenna Placement and Beam Pointing 审中-公开
    使用分布式天线放置和光束指向的无人飞行器通信

    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。

    Forward link data rate control and rate indication for satellite-enabled communications systems
    10.
    发明授权
    Forward link data rate control and rate indication for satellite-enabled communications systems 有权
    用于卫星通信系统的前向链路数据速率控制和速率指示

    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。