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1. 发明申请

US20060223587A1 Antenna array pattern distortion mitigation 有权
公开(公告)号：US20060223587A1
公开(公告)日：2006-10-05
申请号：US11182236
申请日：2005-07-15
申请人： Ivan Fernandez-Corbaton , Ahmad Jalali , Ernest Ozaki , Harris Simon , Sherman Gregory
发明人： Ivan Fernandez-Corbaton , Ahmad Jalali , Ernest Ozaki , Harris Simon , Sherman Gregory
IPC分类号： H04M1/00
CPC分类号： H01Q25/00
摘要： At least one feature provides a way to perform point-to-multipoint transmissions using adaptive or directional antennas while reducing antenna pattern distortion. Generally, rather than transmitting the same waveform to two or more receivers, an information-bearing signal is transformed into different decorrelated waveforms and each decorrelated waveform is transmitted to a different receiver. In one implementation, an information-bearing signal is transformed into two decorrelated signals such that their crosscorrelation, or autocorrelation of the information-bearing signal, is zero or very small. Such decorrelation may be achieved by sending a first signal to a first receiver while sending a second signal, having a radio frequency spectrum that is the spectrally inverted version of the first signal, to a second receiver. In another implementation, a first signal is transmitted to a first receiver and is also transmitted to a second receiver with a time delay.

2. 发明申请

US20070178927A1 Centralized medium access control algorithm for CDMA reverse link 失效
标题翻译： CDMA反向链路的集中式媒体接入控制算法
公开(公告)号：US20070178927A1
公开(公告)日：2007-08-02
申请号：US11441651
申请日：2006-05-25
申请人： Ivan Fernandez-Corbaton , Ahmad Jalali , Jordi Pinos Pont
发明人： Ivan Fernandez-Corbaton , Ahmad Jalali , Jordi Pinos Pont
IPC分类号： H04B7/00 , H04Q7/20
CPC分类号： H04W52/343 , H04W52/367
摘要： A novel MAC algorithm is disclosed having various features for a modern CDMA interference-shared reverse link, including (a) link quality assurance, (b) individual congestion control, (c) variable data rate transition policy, and/or (d) reverse link partitioning. Link quality assurance is provided by monitoring transmission feedback information (ACK/NACK) to indirectly determine the quality of a communication link. Wireless devices are individually targeted to perform congestion control of the reverse link. Variable data transmission rates and discontinuous transmissions are achieved by individual wireless devices that autonomously adjust their transmission rate and transmit power. The reverse link can also be partitioned among the different wireless devices by individually controlling the transmit power of the wireless devices operating on the reverse link.
摘要翻译：公开了一种新颖的MAC算法，其具有用于现代CDMA干扰共享反向链路的各种特征，包括（a）链路质量保证，（b）个体拥塞控制，（c）可变数据速率转换策略和/或（d）反向链接分区。通过监视传输反馈信息（ACK / NACK）来间接地确定通信链路的质量来提供链路质量保证。无线设备被单独定向以执行反向链路的拥塞控制。可变数据传输速率和不连续传输通过自主调整其传输速率和传输功率的各个无线设备实现。也可以通过单独控制在反向链路上操作的无线设备的发射功率，在不同的无线设备之间对反向链路进行分区。

3. 发明申请

US20050201335A1 Access channel with constrained arrival times 失效
标题翻译：访问频道具有约束到达时间
公开(公告)号：US20050201335A1
公开(公告)日：2005-09-15
申请号：US10952970
申请日：2004-09-28
申请人： Ivan Fernandez-Corbaton , Franklin Antonio , Leonard Schiff , Ahmad Jalali
发明人： Ivan Fernandez-Corbaton , Franklin Antonio , Leonard Schiff , Ahmad Jalali
IPC分类号： H04W74/04 , H04B1/707 , H04Q7/00 , H04B7/216
CPC分类号： H04W56/0005 , H04J13/16
摘要： Systems, methods and apparatus for configuring and accessing a random access channel in a CDMA communication system are disclosed. The number of users supported by a random access channel can be optimized by assigning a distinct time of arrival to each of a plurality of users. Each of the users can be time synchronized and can transmit data at a time that compensates for a propagation delay to allow the data to arrive at the destination receiver at the assigned time. In a CDMA system, each of the users can transmit data that is spread with the same spreading code, provided the cross correlation properties of the code are sufficient to allow identification of a source that is time offset relative to another user. The time of arrival can be determined based on the number of active users, and can be assigned as often as each transmission by each user.
摘要翻译：公开了用于在CDMA通信系统中配置和访问随机接入信道的系统，方法和装置。可以通过向多个用户中的每一个分配不同的到达时间来优化随机接入信道支持的用户数量。每个用户可以是时间同步的，并且可以在补偿传播延迟的时间发送数据，以允许数据在分配的时间到达目的地接收机。在CDMA系统中，如果代码的互相关属性足以允许识别相对于另一个用户的时间偏移的源，那么每个用户可以发送用相同的扩展码扩展的数据。可以基于活动用户的数量来确定到达时间，并且可以分配给每个用户每次发送的频率。

4. 发明公开

US20240236963A9 SYSTEMS AND METHODS FOR A WIRELESS BROADBAND ACCESS SYSTEM 审中-公开
公开(公告)号：US20240236963A9
公开(公告)日：2024-07-11
申请号：US18383224
申请日：2023-10-24
申请人： Ahmad Jalali
发明人： Ahmad Jalali
IPC分类号： H04W72/0453 , H04W72/541
CPC分类号： H04W72/0453 , H04W72/541
摘要： A communications apparatus comprises of one or more Active Antenna Units (AAUs) collocated in the same sector, and a processor. The processor de-multiplexes a data packet stream into at least two sub-streams, each sub-stream is transmitted on a different medium path. Each medium path is comprised of frequency channels, antenna polarizations and AAUs. A scheduler assigns data packets to different medium paths. The apparatus transmits on at least one frequency band, each frequency band is divided into a set of one or more frequency channels, at least one frequency channel of a frequency band is assigned to at least one AAU. A frequency channel is assigned to only one or to both antenna polarizations of the same AAU. The apparatus determines if an extraneous signal is present on a frequency channel and stops transmitting on the entire or part of the frequency channel where extraneous signal is detected.

5. 发明申请

US20210392558A1 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.

6. 发明授权

US10644784B2 Communications system for providing broadband access to aerial platforms 有权
公开(公告)号：US10644784B2
公开(公告)日：2020-05-05
申请号：US15897018
申请日：2018-02-14
申请人： Ahmad Jalali
发明人： Ahmad Jalali
IPC分类号： H04B7/185 , H04B7/212 , H04W52/42 , H04W52/24 , H04B17/336
CPC分类号： H04B7/18502 , H04B7/212 , H04W52/24 , H04W52/42 , H04B17/336 , H04W52/242 , H04W52/243
摘要： A terrestrial communications network for providing broadband internet access to aerial platforms is described. One set of embodiments describe assignment of cell site beams to aerial platforms to maximize signal quality in a frequency reuse of 1 network. Another set of embodiments describe time division duplexing and beam forming schemes for minimizing co-channel interference. Systems and methods for establishing links from aerial platforms to cell sites, and mobility management of aerial platforms, to maximize signal quality are described. In another set of embodiments, systems and methods are described to mitigate fading due to ground reflection.

7. 发明授权

US10389431B2 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.

8. 发明授权

US09807569B2 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.

9. 发明授权

US09742484B2 Provision of broadband access to airborne platforms and ground terminals using fixed satellite service and direct broadcast satellite spectra 有权
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.

10. 发明授权

US09385803B2 Provision of broadband access to airborne platforms 有权
标题翻译：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。

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