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51. 发明申请

US20220345232A1 BEAM MANAGEMENT AND ANTENNA CALIBRATION IN MIMO SYSTEMS 有权
公开(公告)号：US20220345232A1
公开(公告)日：2022-10-27
申请号：US17761940
申请日：2019-12-27
申请人： Oner Orhan , Hosein Nikopour , Shilpa Talwar , Dor Shaviv , Roya Doostnejad , Adesoji J. Sajuyigbe
发明人： Oner Orhan , Hosein Nikopour , Shilpa Talwar , Dor Shaviv , Roya Doostnejad , Adesoji J. Sajuyigbe
IPC分类号： H04B17/21 , H04B7/06
摘要： Millimeter-wave (mmWave) and sub-mmWave technology, apparatuses, and methods that relate to transceivers and receivers for wireless communications are described. The various aspects include an apparatus of a communication device including an antenna array and processing circuitry coupled to the antenna array. The processing circuitry is configured to initialize a beam tracking algorithm based on received signals received at the antenna array, wherein antenna phases used in the beam tracking are bound by an upper phase limit and a lower phase limit, to generate a beam tracking result. The processing circuitry is further configured to generate a calibration vector based on the beam tracking result and receive subsequent transmissions using a codebook adapted based on the calibration vector.

52. 发明申请

US20170181190A1 CLIENT-DRIVEN DYNAMIC CHANNEL ADAPTATION IN WIRELESS NETWORKING 有权
公开(公告)号：US20170181190A1
公开(公告)日：2017-06-22
申请号：US14975165
申请日：2015-12-18
申请人： Ehsan Aryafar , Minyoung Park , Ping Wang , Shilpa Talwar
发明人： Ehsan Aryafar , Minyoung Park , Ping Wang , Shilpa Talwar
IPC分类号： H04W74/08 , H04W74/00
CPC分类号： H04W74/0816 , H04W74/004 , H04W84/12
摘要： A client station (STA), when operating in a wireless network, receives data sent by an access point (AP) on a first channel comprising at least one subchannel. During reception of the data on the first channel, the STA monitors channel availability of an additional set of one or more subchannels. In response to a detected availability of at least one newly-available subchannel, the STA sends at least one notification to the AP identifying STA-side availability of the newly-available subchannel(s). The STA subsequently receives data from the AP on the newly-available subchannel(s), which is sent in response to the at least one notification. The AP, when communicating data to the STA, receives the at least one notification from the STA and, in response thereto, initiates data transmission on one or more of the newly-available channel(s).

53. 发明申请

US20170117626A1 ORBITAL ANGULAR MOMENTUM IN MILLIMETER-WAVE WIRELESS COMMUNICATION 审中-公开
公开(公告)号：US20170117626A1
公开(公告)日：2017-04-27
申请号：US14977340
申请日：2015-12-21
申请人： Adesoji J. Sajuyigbe , Shilpa Talwar
发明人： Adesoji J. Sajuyigbe , Shilpa Talwar
IPC分类号： H01Q3/26 , H04W72/12 , H04B7/06 , H01Q21/06
CPC分类号： H01Q3/26 , H01Q1/523 , H01Q15/0086 , H01Q21/061 , H01Q21/065 , H01Q21/28 , H04B7/0617 , H04W72/1263
摘要： An array of antenna elements is energized as a plurality of concentric rings of the antenna elements, each of the concentric rings energized with a respective signal from a first transceiver, the signal having a continuously varying progressive phase between the antenna elements to generate n respective electromagnetic orbital angular momentum (OAM) beams each having a respective OAM mode m where m ranges from 0 to ±n. The beams are contemporaneously generated orthogonal to each other. The circumferential phase profile of the signal for a concentric ring of α antenna elements is 2πm radians, and the progressive phase difference between each of the α antenna elements is 2πm/α radians. The first transceiver transmits the beams to a second transceiver which demodulates them and sends demodulation quality information to the first transceiver for determination of whether to transmit the beams in full multiplexing, full diversity or partial diversity.

54. 发明授权

US08311545B2 Macro-to-femto cell reselection 有权
标题翻译：宏到毫微微小区重选
公开(公告)号：US08311545B2
公开(公告)日：2012-11-13
申请号：US12456987
申请日：2009-06-24
申请人： Jing Zhu , Xiangying Yang , Shilpa Talwar , Muthaiah Venkatachalam
发明人： Jing Zhu , Xiangying Yang , Shilpa Talwar , Muthaiah Venkatachalam
IPC分类号： H04W36/00 , H04W36/34
CPC分类号： H04W36/245 , H04W84/045
摘要： The present invention discloses a method including: storing identification information or location information for a handover previously performed by a mobile system; estimating when the mobile system enters within a coverage area of a target femtocell; recognizing the coverage area based on the identification information or the location information; and scanning for the target femtocell prior to handover.
摘要翻译：本发明公开了一种方法，包括：存储用于由移动系统先前执行的切换的识别信息或位置信息; 估计何时移动系统在目标毫微微小区的覆盖区域内进入; 基于识别信息或位置信息识别覆盖区域; 并在切换之前扫描目标毫微微小区。

55. 发明授权

US08150399B2 Techniques for wireless communications networks employing beamforming 有权
标题翻译：采用波束成形技术的无线通信网络技术
公开(公告)号：US08150399B2
公开(公告)日：2012-04-03
申请号：US11963445
申请日：2007-12-21
申请人： Wendy C. Wong , Shilpa Talwar
发明人： Wendy C. Wong , Shilpa Talwar
IPC分类号： H04W36/00
CPC分类号： H04L43/08 , H04L41/5009 , H04L41/5035 , H04L43/16 , H04W72/046 , H04W72/082
摘要： Techniques involving beamforming are disclosed. For example, For instance an apparatus may select a first mobile station served by a first base station and a second mobile station served by a second base station. Based on this selection, a quality metric may be determined that is based on a strength of a user link and a strength of an interfering link. The user link is associated with service of the first mobile station and the interfering link is associated with service of the second mobile station. When the quality metric is greater than a predetermined threshold, the apparatus may designate the first and second mobile stations as suitable for beamforming service in a same resource allocation. Also, techniques are disclosed for determining whether a mobile station is a cell edge mobile station.
摘要翻译：公开了涉及波束形成的技术。例如，设备可以选择由第二基站服务的第一基站和第二移动台服务的第一移动台。基于该选择，可以基于用户链接的强度和干扰链路的强度来确定质量度量。用户链路与第一移动台的服务相关联，并且干扰链路与第二移动台的服务相关联。当质量度量大于预定阈值时，装置可以在相同的资源分配中将第一和第二移动台指定为适合于波束成形服务。此外，公开了用于确定移动站是小区边缘移动站的技术。

56. 发明授权

US08131306B2 Wireless access network and method for allocating data subcarriers within a downlink subframe based on grouping of user stations 有权
标题翻译：无线接入网络和方法，用于基于用户站的分组在下行链路子帧内分配数据子载波
公开(公告)号：US08131306B2
公开(公告)日：2012-03-06
申请号：US11687393
申请日：2007-03-16
申请人： Minnie Ho , Qinghua Li , Xintian E Lin , Vallabhajosyula S. Somayazulu , Shilpa Talwar
发明人： Minnie Ho , Qinghua Li , Xintian E Lin , Vallabhajosyula S. Somayazulu , Shilpa Talwar
IPC分类号： H04W72/00
CPC分类号： H04W72/042 , H04B7/02 , H04L5/00 , H04W72/0453 , H04W72/048 , H04W88/08
摘要： Embodiments of a wireless access network and method for allocation time and frequency resources are generally described herein. Other embodiments may be described and claimed. In some embodiments, a base station allocates contiguous groups of data subcarriers of a downlink subframe to closed-loop user stations, and allocates the remaining data subcarriers of the downlink subframe to open-loop user stations to increase frequency diversity.
摘要翻译：本文一般地描述用于分配时间和频率资源的无线接入网络和方法的实施例。可以描述和要求保护其他实施例。在一些实施例中，基站将下行链路子帧的连续的数据子载波组分配给闭环用户站，并且将下行链路子帧的剩余数据子载波分配给开环用户站以增加频率分集。

57. 发明申请

US20070071120A1 Peak to average power reduction using channel state information 审中-公开
标题翻译：使用信道状态信息进行峰均功率降低
公开(公告)号：US20070071120A1
公开(公告)日：2007-03-29
申请号：US11236381
申请日：2005-09-26
申请人： Shilpa Talwar
发明人： Shilpa Talwar
IPC分类号： H04K1/10
CPC分类号： H04L27/2614 , H04L1/0023
摘要： Methods and systems for communicating in a wireless network include reducing the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) subcarriers based on channel state information. Reducing the PAPR may include observing channel state information such as channel impulse response, interference or noise of a receive channel, selecting subcarriers for transmission likely to be detrimentally affected by the channel state and applying a known PAPR reduction technique, such as tone reservation PAPR reduction or tone injection PAPR reduction to the selected subcarriers. Various embodiments and variants are also disclosed.
摘要翻译：用于在无线网络中进行通信的方法和系统包括基于信道状态信息来降低正交频分复用（OFDM）子载波的峰均功率比（PAPR）。降低PAPR可以包括观察信道状态信息，例如信道脉冲响应，接收信道的干扰或噪声，选择可能受到信道状态的不利影响的传输的子载波，并应用已知的PAPR缩减技术，例如音调预留PAPR减少或对所选择的副载波进行音调注入PAPR减少。还公开了各种实施例和变型。

58. 发明申请

US20050135503A1 System and method for adjusting a power level of a transmission signal 审中-公开
公开(公告)号：US20050135503A1
公开(公告)日：2005-06-23
申请号：US11006403
申请日：2004-12-06
申请人： Shilpa Talwar , Jose Tellado
发明人： Shilpa Talwar , Jose Tellado
IPC分类号： H04B7/005 , H04L27/26 , H04L27/34 , H04K1/02
CPC分类号： H04W52/52 , H04L27/2624 , H04L27/3411
摘要： The invention includes an apparatus and a method for adjusting a power level of a transmission signal for minimal distortion. The method includes modulating the transmission signal. The modulated transmission signal is processed to reduce a peak to average ratio of the modulated transmission signal based upon modulation parameters of the modulated transmission signal. The power level of the modulated transmission signal is adjusted according to the peak to average ratio of the modulated transmission signal. The transmission signal is amplified and transmitted.

59. 发明授权

US11929802B2 Unmanned aerial vehicle communication 有权
公开(公告)号：US11929802B2
公开(公告)日：2024-03-12
申请号：US17297828
申请日：2019-11-27
申请人： Feng Xue , Mustafa Akdeniz , Seong-Youp John Suh , Shu-Ping Yeh , Eduardo Alban , Philippe Auzas , Jonathan Byrne , Mark Davis , David Gomez Gutierrez , Timo Huusari , Bradley Alan Jackson , Ranganadh Karella , Sreenivas Kasturi , Mengkun Ke , Ching-Yu Liao , Tiefeng Shi , Daniel Tong , Candy Yiu
发明人： Feng Xue , Mustafa Akdeniz , Seong-Youp John Suh , Jingwen Bai , Shu-Ping Yeh , Rodrigo Aldana Lopez , Eduardo Alban , David Arditti Ilitzky , Philippe Auzas , Jonathan Byrne , Leobardo Campos Macias , Mark Davis , Rafael De La Guardia Gonzalez , David Gomez Gutierrez , Timo Huusari , Bradley Alan Jackson , Ranganadh Karella , Sreenivas Kasturi , Mengkun Ke , Ching-Yu Liao , Tiefeng Shi , Shilpa Talwar , Daniel Tong , Candy Yiu
IPC分类号： H04B7/06 , B64C39/02 , H01Q1/28 , H01Q19/18 , H04B7/26 , B64U10/00
CPC分类号： H04B7/0617 , B64C39/024 , H01Q1/28 , H01Q19/18 , H04B7/26 , B64U10/00
摘要： An unmanned aerial vehicle can be configured to adjust a beam direction, provide path information, act as a base station, act as a cluster head, include an improved directional antenna or array of directional antennas, communicate in a collaboration using belief propagation, receive communications from a serving station aiding in navigation or improved signal performance, or the like.

60. 发明授权

US09491776B2 Systems and methods for scheduling communication between wireless devices to reduce interference associated with full duplex communication in multi-cell networks 有权
标题翻译：用于调度无线设备之间的通信以减少与多小区网络中的全双工通信相关联的干扰的系统和方法
公开(公告)号：US09491776B2
公开(公告)日：2016-11-08
申请号：US14498526
申请日：2014-09-26
申请人： Ehsan Aryafar , Roya Doostnejad , Shilpa Talwar
发明人： Ehsan Aryafar , Roya Doostnejad , Shilpa Talwar
IPC分类号： H04W72/12 , H04L5/14 , H04L5/00 , H04W72/04
CPC分类号： H04W72/1231 , H04L5/0073 , H04L5/14 , H04W72/046
摘要： Certain embodiments herein relate to scheduling interference between wireless devices in a manner that reduced interference associated with full duplex communication. Signal strength and interference information associated with communication between wireless devices may be collected and forwarded to a processing device, such as a central controller. The central controller may utilize such information to generate a conflict graph that depicts interference relationships between the wireless devices. Using the conflict graph, the central controller may determine whether requested communications may be scheduled along with concurrently scheduled communications without resulting in interference affecting the communications. In one embodiment, a requested communication may be scheduled with other concurrently scheduled communications if the aggregated throughput is increased with the addition of the requested communication.
摘要翻译：本文中的某些实施例涉及以减少与全双工通信相关联的干扰的方式来调度无线设备之间的干扰。可以收集与无线设备之间的通信相关联的信号强度和干扰信息，并将其转发到诸如中央控制器的处理设备。中央控制器可以利用这样的信息来产生描绘无线设备之间的干扰关系的冲突图。使用冲突图，中央控制器可以确定所请求的通信可以与并行调度的通信一起被调度，而不会造成影响通信的干扰。在一个实施例中，如果通过添加所请求的通信来增加聚合的吞吐量，则可以利用其他并行调度的通信来调度所请求的通信。

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