公开(公告)号：US20190280791A1

公开(公告)日：2019-09-12

申请号：US16297131

申请日：2019-03-08

申请人： ADITYA DHANANJAY ,  SUNDEEP RANGAN ,  DENNIS SHASHA

发明人： ADITYA DHANANJAY ,  SUNDEEP RANGAN ,  DENNIS SHASHA

IPC分类号： H04B17/391 ,  H04B7/0456 ,  H04B7/06 ,  H03H17/06

摘要： An exemplary device for emulating a wireless channel(s) can be provided, which can include, for example, a first communication interface configured to receive a first data signal(s) from a transmitter unit(s), a hardware processor configured to receive the first data signal(s) from the first communication interface, and generate a second data signal(s) by modifying the first data signal(s) based on a test(s) being performed on the transmitter unit(s), and a second communication interface configured to receive the second data signal(s) from the hardware processor, and transmit the second data signal(s) to a receiver unit(s). A control interface can be included, which can be configured to receive a control signal(s) from the transmitter unit(s) or the receiver unit(s) and provide the control signal(s) to the hardware processor for determining the second data signal(s).

公开(公告)号：US08582536B2

公开(公告)日：2013-11-12

申请号：US12630130

申请日：2009-12-03

申请人： Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Murari Srinivasan

发明人： Rajiv Laroia ,  Junyi Li ,  Sundeep Rangan ,  Murari Srinivasan

IPC分类号： H04W4/00

CPC分类号： H04B7/0626

摘要： Methods and apparatus for providing channel diversity to wireless terminals (WTs) in a manner that reduces the latency between the time a WT encounters satisfactory channel conditions are described. A plurality of communications channels with different physical characteristics are maintained in a cell by a base station (BS). Each WT monitors multiple channels and maintains multiple channel estimates at the same time so that rapid switching between channels is possible. Channel quality information is conveyed from each WT to the BS. The WT or BS selects a channel based on the measured channel quality. By supporting multiple channels and by introducing periodic variations into the channels in various embodiments, the time before a WT encounters a channel with good or acceptable channel conditions is minimized even if the WT does not change location. Multiple antennas are used at the BS to support numerous channels simultaneously, e.g., by controlling antenna patterns.

公开(公告)号：US08548515B2

公开(公告)日：2013-10-01

申请号：US13088210

申请日：2011-04-15

申请人： Samel Celebi ,  Charles Stanski ,  Sundeep Rangan

发明人： Samel Celebi ,  Charles Stanski ,  Sundeep Rangan

IPC分类号： H04Q7/20

CPC分类号： H04W52/50 ,  H04W52/10 ,  H04W52/146

摘要： Provided is an feedback mechanism to correct power control information in a broadcast signal that is determined to be incorrect by one or more devices that receive and rely on the broadcast information. A device that receives the incorrect broadcast information can determine a correction and to the information and provide a recommendation to tilt source of the broadcast information. The source can selectively determine whether to modify the broadcast information based on the recommendation from one or more devices. If the broadcast information is modified, subsequent devices that receive the broadcast information are provided with the modified information. If further changes are needed, the subsequent devices can provide further recommended changes.

摘要翻译： 提供了一种反馈机制，用于校正由接收并依赖于广播信息的一个或多个设备确定为不正确的广播信号中的功率控制信息。 接收不正确广播信息的设备可以确定对该信息的校正和提供倾斜广播信息源的建议。 源可以基于来自一个或多个设备的推荐来选择性地确定是否修改广播信息。 如果广播信息被修改，则接收广播信息的后续设备被提供修改的信息。 如果需要进一步的更改，后续设备可以提供进一步的建议更改。

公开(公告)号：US08520723B2

公开(公告)日：2013-08-27

申请号：US12963910

申请日：2010-12-09

申请人： Sundeep Rangan ,  Prashanth Hande ,  Niranjan N. Ratnakar ,  Ozge Koymen ,  Ritesh K. Madan ,  Atul Maharshi ,  Subhadeep P. Roy ,  Siddharth Ray

发明人： Sundeep Rangan ,  Prashanth Hande ,  Niranjan N. Ratnakar ,  Ozge Koymen ,  Ritesh K. Madan ,  Atul Maharshi ,  Subhadeep P. Roy ,  Siddharth Ray

IPC分类号： H04B1/38

CPC分类号： H04L1/1877 ,  H04L1/188

摘要： The apparatus and methods described herein are used to provide data between an application and a modem. One method includes providing data in application data units from the application to the modem, transmitting the data from the modem to a receiver, and reporting by the modem to the application, whether each application data unit has been successfully transmitted from the modem to the receiver.

摘要翻译： 本文描述的装置和方法用于在应用和调制解调器之间提供数据。 一种方法包括将应用数据单元中的数据从应用程序提供给调制解调器，将数据从调制解调器发送到接收机，并由调制解调器向应用程序报告，每个应用数据单元是否已经成功地从调制解调器发送到接收机 。

公开(公告)号：US08265019B2

公开(公告)日：2012-09-11

申请号：US12261319

申请日：2008-10-30

申请人： Ritesh K. Madan ,  Arnab Das ,  Sundeep Rangan ,  Siddharth Ray

发明人： Ritesh K. Madan ,  Arnab Das ,  Sundeep Rangan ,  Siddharth Ray

IPC分类号： H04W4/00

CPC分类号： H04L47/824 ,  H04L47/70 ,  H04L47/762 ,  H04L47/801 ,  H04W72/1242

摘要： Systems and methodologies are described that facilitate dynamically adjusting scheduling priorities in relation to a combination of delay sensitive flows with delay requirements and best effort flows. The systems and methodologies provide optimal and efficient techniques to enable real time adjustment and assignment of bandwidth for a combination of best effort flows and delay sensitive flows. In particular, the bandwidth allocation is adjusted for each data packet such that delay requirements are met and the remaining bandwidth can be assigned to best effort flows.

摘要翻译： 描述了系统和方法，其有助于动态地调整与具有延迟要求和尽力而为流的延迟敏感流的组合相关的调度优先级。 这些系统和方法提供了最佳和有效的技术，以实现对最佳努力流和延迟敏感流的组合的实时调整和带宽分配。 特别地，针对每个数据分组调整带宽分配，使得满足延迟要求，并且可以将剩余带宽分配给尽力而为流。

公开(公告)号：US20120147759A1

公开(公告)日：2012-06-14

申请号：US12963889

申请日：2010-12-09

申请人： Niranjan N. Ratnakar ,  Prashanth Hande ,  Sundeep Rangan ,  Atul Maharshi ,  Subhadeep P. Roy ,  Ritesh K. Madan ,  Ozge Koymen ,  Siddharth Ray

发明人： Niranjan N. Ratnakar ,  Prashanth Hande ,  Sundeep Rangan ,  Atul Maharshi ,  Subhadeep P. Roy ,  Ritesh K. Madan ,  Ozge Koymen ,  Siddharth Ray

IPC分类号： H04J4/00

CPC分类号： H04W24/10 ,  H04L1/0026 ,  H04L1/1867 ,  H04L65/608 ,  H04L65/80

摘要： The apparatus and methods described herein are used to provide a communication quality feedback of an end-to-end communication path between an application transmitter and an application receiver. One method includes transmitting data from the application transmitter to the application receiver via the end-to-end communication path, the end-to-end communication path having at least one wireless link with a wireless transmitter and a wireless receiver, generating, at the wireless transmitter, a first communication quality feedback message, and transmitting the first communication quality feedback message from the wireless transmitter to the application transmitter in a standardized format.

摘要翻译： 本文描述的装置和方法用于提供应用发射机和应用接收机之间的端到端通信路径的通信质量反馈。 一种方法包括经由端对端通信路径将数据从应用发射机发送到应用接收机，端到端通信路径具有与无线发射机和无线接收机的至少一个无线链路，在 无线发射机，第一通信质量反馈消息，以及以标准格式从无线发射机向应用发射机发送第一通信质量反馈消息。

公开(公告)号：US20120099435A1

公开(公告)日：2012-04-26

申请号：US13277124

申请日：2011-10-19

申请人： Yann Barbotin ,  Ali Hormati ,  Sundeep Rangan ,  Martin Vetterli

发明人： Yann Barbotin ,  Ali Hormati ,  Sundeep Rangan ,  Martin Vetterli

IPC分类号： H04L12/26

CPC分类号： H04L1/0631 ,  H04B1/7105 ,  H04B1/7113 ,  H04J11/0063 ,  H04L25/0204 ,  H04L27/2647

摘要： According to a first aspect of the present invention there is provided a method of estimating, jointly, a set of multipath channels having a common path support, the method comprising the steps of, estimating jointly the common path support of the set of multipath channels using a spectral estimation technique, estimating path amplitudes, for each channel in the set of multipath channels, using the estimation of the common path support, to obtain an estimate of the set of multipath channels.

摘要翻译： 根据本发明的第一方面，提供了一种共同估计具有公共路径支持的一组多路径信道的方法，所述方法包括以下步骤：使用以下步骤共同估计所述多路径信道集合的公共路径支持： 频谱估计技术，使用公共路径支持的估计来估计多径信道集合中的每个信道的路径振幅，以获得该多路径信道集合的估计。

公开(公告)号：US08116805B2

公开(公告)日：2012-02-14

申请号：US11611881

申请日：2006-12-17

申请人： Arnab Das ,  Prashanth Hande ,  Sundeep Rangan ,  Xinzhou Wu

发明人： Arnab Das ,  Prashanth Hande ,  Sundeep Rangan ,  Xinzhou Wu

IPC分类号： H04B7/00

CPC分类号： H04L1/0002 ,  H04L1/0017 ,  H04L5/023 ,  H04L27/2601 ,  H04W52/26 ,  H04W72/1205 ,  H04W72/1268

摘要： Systems and methodologies are described that facilitate scheduling transmission, upon an uplink traffic channel in Orthogonal Frequency Division Multiplexing (OFDM) environments. Uplink scheduling may include user selection and rate selection. Further, user selection may be based on a token mechanism that provides control over fairness of allocation to disparate users. Moreover, rate selection may be based upon considerations of uplink interference mitigation.

摘要翻译： 描述了在正交频分复用（OFDM）环境中的上行链路业务信道上促进调度传输的系统和方法。 上行链路调度可以包括用户选择和速率选择。 此外，用户选择可以基于提供对分配给不同用户的公平性的控制的令牌机制。 此外，速率选择可以基于上行链路干扰减轻的考虑。

公开(公告)号：US20110310879A1

公开(公告)日：2011-12-22

申请号：US13218647

申请日：2011-08-26

申请人： Xinzhou Wu ,  Sundeep Rangan ,  Prashanth Hande ,  Arnab Das ,  Junyi Li

发明人： Xinzhou Wu ,  Sundeep Rangan ,  Prashanth Hande ,  Arnab Das ,  Junyi Li

IPC分类号： H04W72/04 ,  H04W74/04 ,  H04J3/00

CPC分类号： H04W72/1231 ,  H04W72/1268

摘要： Systems and methodologies are described that facilitate scheduling uplink transmissions. For instance, a time sharing scheme can be utilized such that differing mobile devices can be scheduled to transmit during differing time slots; however, it is also contemplated that a static scheme can be employed. Pursuant to an illustration, an interference budget can be combined with a time varying weighting factor associated with a base station; the weighting factor can be predefined and/or adaptively adjusted (e.g., based upon a load balancing mechanism). Moreover, the weighted interference budget can be leveraged for selecting mobile devices for uplink transmission (e.g., based at least in part upon path loss ratios of the mobile devices). Further, disparate interference budgets can be utilized by differing channels of a sector at a particular time. Also, for example, a base station can assign a loading factor to be utilized by wireless terminal(s) for generating channel quality report(s).

摘要翻译： 描述了有助于调度上行链路传输的系统和方法。 例如，可以利用时间共享方案，使得不同的移动设备可以被调度为在不同时隙期间进行传输; 然而，也可以考虑采用静态方案。 根据图示，可以将干扰预算与与基站相关联的时变加权因子组合; 加权因子可以被预先定义和/或自适应地调整（例如，基于负载均衡机制）。 此外，加权干扰预算可以用于选择用于上行链路传输的移动设备（例如，至少部分地基于移动设备的路径损耗比率）。 此外，不同的干扰预算可以在特定时间由扇区的不同信道来利用。 此外，例如，基站可以分配要由无线终端利用以产生信道质量报告的负载因子。

公开(公告)号：US07869421B2

公开(公告)日：2011-01-11

申请号：US11486540

申请日：2006-07-14

申请人： Sundeep Rangan ,  Junyi Li

发明人： Sundeep Rangan ,  Junyi Li

IPC分类号： H04J3/08

CPC分类号： H04W56/0045 ,  H04L5/003 ,  H04L5/0078 ,  H04L5/0098

摘要： The claimed subject matter relates to acquiring channel access in a wireless communication environment. A wireless terminal may transmit first and second sets of tones over respective first and second contiguous transmission periods. The first and second tone sets may be disjoint from each other and may each comprise a number of contiguous tones. The terminal may then refrain from transmitting during a third time period in order to receive a grant signal from a base station in response to the access request. The beginnings of the first time period and the second time period may be a function of a determined uplink transmission time.

摘要翻译： 所要求保护的主题涉及在无线通信环境中获取信道接入。 无线终端可以在相应的第一和第二连续传输周期上传送第一和第二组音调。 第一和第二音调集可以彼此不相交，并且可以各自包括多个连续的音调。 然后终端可以在第三时间段期间避免发送，以便响应于接入请求从基站接收授权信号。 第一时间段和第二时间段的开始可以是确定的上行链路传输时间的函数。