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21. 发明授权

US07075891B2 Method and apparatus for transmitting and receiving data packets to avoid stall during re-sequencing of data packets 失效
公开(公告)号：US07075891B2
公开(公告)日：2006-07-11
申请号：US09994490
申请日：2001-11-26
申请人： Teck H. Hu , Ashok N. Rudrapatna
发明人： Teck H. Hu , Ashok N. Rudrapatna
IPC分类号： H04L12/26 , H04L1/18 , H04Q7/24 , H04L12/28
CPC分类号： H04L1/1877 , H04L1/1607 , H04L1/1809 , H04L1/1838 , H04L2001/0098 , H04L2001/125
摘要： In the method and apparatus for transmitting data packets, a source device places identifiers in data packets being transmitted. The identifiers identify data packets that the source device considers properly received by a destination device or identify data packets that have had their transmission aborted by the source device. When the destination device receives data packets including these identifiers and the identifiers identify data packets that the destination device has yet to receive, the destination device will proceed as if the identified data packets have been re-sequenced.

22. 发明授权

US06961304B1 Dynamic reassignment of code space among multiple modes of operation 有权
标题翻译：在多种操作模式之间动态重新分配代码空间
公开(公告)号：US06961304B1
公开(公告)日：2005-11-01
申请号：US09660094
申请日：2000-09-12
申请人： Ashok N. Rudrapatna , Mehmet Oguz Sunay
发明人： Ashok N. Rudrapatna , Mehmet Oguz Sunay
IPC分类号： H04B7/26 , H04J11/00 , H04J13/00 , H04J13/18 , H04W36/06
CPC分类号： H04B7/2618 , H04J13/0048 , H04J13/18 , H04W36/06
摘要： The code space associated with the communication system is divided into at least two subspaces where each subspace is assigned to a different mode of operation. In one mode, such as a voice mode, each user is given full time access to a portion of the subspace associated with that mode of operation. In a second mode, such as a data mode, each user uses the entire subspace associated with that mode on a time shared basis. Additionally, in-sector handoffs from one Walsh code to another are used to more efficiently distribute the code space.
摘要翻译：与通信系统相关联的代码空间被划分为至少两个子空间，其中每个子空间被分配到不同的操作模式。在诸如语音模式的一种模式中，每个用户被给予全职访问与该操作模式相关联的子空间的一部分。在诸如数据模式的第二模式中，每个用户在时间共享的基础上使用与该模式相关联的整个子空间。另外，从一个沃尔什码到另一个沃尔什码的扇区间切换被用于更有效地分配代码空间。

23. 发明授权

US08040802B2 Method of controlling congestion for wireless communications 有权
标题翻译：控制无线通信拥堵的方法
公开(公告)号：US08040802B2
公开(公告)日：2011-10-18
申请号：US12013587
申请日：2008-01-14
申请人： Nirwan Ansari , Shupeng Li , Ashok N. Rudrapatna
发明人： Nirwan Ansari , Shupeng Li , Ashok N. Rudrapatna
IPC分类号： H04L12/26
CPC分类号： H04L47/10 , H04L47/11 , H04L47/12 , H04L47/14 , H04L47/263 , H04L47/27 , H04L47/30 , H04W28/12
摘要： An exemplary method of controlling communications includes determining a total congestion window size for a router device. An allocation of at least a portion of the determined total congestion window size to allocated at least one mobile station that communicates with the router device over a wireless link is determined based on the determined total congestion window size. The determined allocation is then reported to a source of a communication intended for the at least one mobile station.
摘要翻译：控制通信的示例性方法包括确定路由器设备的总拥塞窗口大小。基于所确定的总拥塞窗口大小来确定经确定的总拥塞窗口大小的至少一部分的分配到经由无线链路与路由器设备通信的分配的至少一个移动站。所确定的分配然后被报告给旨在用于至少一个移动站的通信的源。

24. 发明申请

US20100284346A1 System and method for cell-edge performance management in wireless systems using centralized scheduling 审中-公开
标题翻译：使用集中式调度的无线系统中的小区边缘性能管理系统和方法
公开(公告)号：US20100284346A1
公开(公告)日：2010-11-11
申请号：US12455220
申请日：2009-05-30
申请人： Ashok N. Rudrapatna , Ganapathy S. Sundaram , Subramanian Vasudevan , Jialin Zou
发明人： Ashok N. Rudrapatna , Ganapathy S. Sundaram , Subramanian Vasudevan , Jialin Zou
IPC分类号： H04W72/04
CPC分类号： H04W72/1247 , H04W36/18 , H04W72/1284
摘要： A method is provided for scheduling transmission resources to a mobile station served by a plurality of base stations. According to the method of the invention, a centralized scheduler is provided at a network node operative to serve each of the plurality of base stations and the centralized scheduler acts to prioritize scheduling of transmission resources to the mobile station as a function of feedback information respecting data received by the mobile station from each of at least two of the plurality of base stations.
摘要翻译：提供了一种用于向由多个基站服务的移动台调度传输资源的方法。根据本发明的方法，在网络节点处提供集中式调度器，该网络节点可操作以服务于多个基站中的每一个，并且集中式调度器根据与数据相关的反馈信息的函数优先考虑向移动台调度传输资源由移动站从多个基站中的至少两个中的每一个接收。

25. 发明申请

US20100008332A1 Method for half-and full-duplex subscriber station operation in frequency division duplex systems 审中-公开
标题翻译：用于分频双工系统中半双工和全双工用户站操作的方法
公开(公告)号：US20100008332A1
公开(公告)日：2010-01-14
申请号：US12217867
申请日：2008-07-09
申请人： Krishna Balachandran , Doru Calin , Shyam P. Parekh , Ashok N. Rudrapatna
发明人： Krishna Balachandran , Doru Calin , Shyam P. Parekh , Ashok N. Rudrapatna
IPC分类号： H04J3/00
CPC分类号： H04L5/16 , H04L1/1671 , H04L5/0007 , H04L5/0044 , H04L5/0091 , H04L5/1469
摘要： The present invention provides a novel framing structure that can be used to smoothly evolve a Time Division Duplex (TDD) wireless communications technology to a Frequency Division Duplex wireless communications technology. A method for establishing the start time of an uplink frame that is offset in relation to a downlink frame by an allocation start time is provided. In addition, methods of allocating downlink and uplink resources for half-duplex and full frequency division duplex operation with adequate provisions for transmit-receive and receive-transmit time gaps are also provided.
摘要翻译：本发明提供了一种新颖的帧结构，其可用于将时分双工（TDD）无线通信技术平滑地演进到频分双工无线通信技术。提供了一种通过分配开始时间建立相对于下行链路帧偏移的上行链路帧的开始时间的方法。此外，还提供了用于半双工和全分频双工操作的下行链路和上行链路资源与发送接收和接收 - 发送时间间隔的适当规定的方法。

26. 发明申请

US20090312042A1 INTER-SECTOR MACRODIVERSITY INTERFERENCE CANCELLATION AND SCHEDULING 有权
标题翻译：区域间干扰消除和调度
公开(公告)号：US20090312042A1
公开(公告)日：2009-12-17
申请号：US12139603
申请日：2008-06-16
申请人： Ashok N. Rudrapatna
发明人： Ashok N. Rudrapatna
IPC分类号： H04B15/00 , H04Q7/20
CPC分类号： H04B1/126 , H04B7/022 , H04B7/0491 , H04L5/0032 , H04L5/006 , H04L25/03305 , H04L25/03821
摘要： The present invention provides a method for interference cancellation in a wireless communication system. One embodiment of a method includes accessing information indicative of one or more first signals transmitted by one or more first mobile units from one or more first sectors. The method also includes accessing information indicative of one or more second signals transmitted by one or more second mobile units from one or more second sectors different than the first sectors. The method further includes canceling interference caused in the second signal(s) by the first signal(s) using the accessed information indicative of the first signal(s) and the second signal(s). The method also includes jointly scheduling and allocating resources to one or more mobile stations in one or more sectors of one or more base stations.
摘要翻译：本发明提供一种无线通信系统中的干扰消除方法。方法的一个实施例包括访问指示由一个或多个第一移动单元从一个或多个第一扇区发送的一个或多个第一信号的信息。该方法还包括访问指示由一个或多个第二移动单元从不同于第一扇区的一个或多个第二扇区发送的一个或多个第二信号的信息。该方法还包括使用表示第一信号和第二信号的访问信息来消除第一信号在第二信号中引起的干扰。该方法还包括共同调度和分配资源给一个或多个基站的一个或多个扇区中的一个或多个移动站。

27. 发明授权

US07154960B2 Method of determining the capacity of each transmitter antenna in a multiple input/multiple output (MIMO) wireless system 有权
标题翻译：确定多输入/多输出（MIMO）无线系统中每个发射机天线的容量的方法
公开(公告)号：US07154960B2
公开(公告)日：2006-12-26
申请号：US10334314
申请日：2002-12-31
申请人： Jung-Tao Liu , Ashok N. Rudrapatna
发明人： Jung-Tao Liu , Ashok N. Rudrapatna
IPC分类号： H04B7/02 , H04B17/02 , H04L1/02 , H04L7/00 , H04L27/20
CPC分类号： H04L1/0068 , H04B7/04 , H04B7/061 , H04B7/0619 , H04L1/0003 , H04L1/0013 , H04L1/08
摘要： The per antenna capacity of each of the transmitter antennas in a MIMO system are individually determined from measurable information at the receiver end. Specifically, the channel capacity for each individual transmitter antenna is calculated at the receiver end as a function of measurable channel coefficients (also known as channel state information), the measurable average signal-to-noise ratio, and the number of transmitter antennas. Once the per antenna capacity of each transmitter antenna is individually determined at the receiver end, the maximum transmission rate for each data stream transmitted by each transmitter antenna is determined from that individual capacity either at the receiver end and fed back to the transmitter end, or is determined at the transmitter end from the individual transmitter antenna capacities that are fed back by the receiver end to the transmitter end. A modulation scheme that supports each maximum transmission rate is then determined based on some defined criteria.
摘要翻译： MIMO系统中每个发射机天线的每个天线容量由接收机端的可测量信息单独确定。具体地说，每个单独的发射机天线的信道容量在接收端被计算为可测量的信道系数（也称为信道状态信息），可测量的平均信噪比和发射机天线的数量的函数。一旦每个发射机天线的每个天线容量在接收机端单独确定，则由每个发射机天线发送的每个数据流的最大传输速率由接收机端的那个单独的容量确定，并被反馈到发射机端，或者在发射机端确定从接收机端向发射机端反馈的单个发射机天线的容量。然后基于一些确定的标准来确定支持每个最大传输速率的调制方案。

28. 发明授权

US06954655B2 Encoding system for multi-antenna transmitter and decoding system for multi-antenna receiver 有权
标题翻译：多天线接收机多天线发射和解码系统编码系统
公开(公告)号：US06954655B2
公开(公告)日：2005-10-11
申请号：US10004024
申请日：2001-11-16
申请人： Ashok N. Rudrapatna , Naresh Sharma
发明人： Ashok N. Rudrapatna , Naresh Sharma
IPC分类号： H03M9/00 , H04B1/18 , H04L1/00 , H04L1/06 , H04M1/00
CPC分类号： H04L1/0065 , H04L1/0041 , H04L1/0045 , H04L1/0618
摘要： The encoding system includes a feed unit receiving data and producing N data streams, where N is at least two. Each of N encoders receives a respective one of the N data streams and produces an encoded data stream. A multiple input multiple output (MIMO) encoder receives the N encoded data streams and encodes the N encoded data streams into M output data stream for transmission by M transmit antennas, where M is at least two. In the decoding system, a MIMO decoder receives T data streams from T receive antennas and decodes the T data streams into the N encoded data streams. Each of N decoders receives a respective one of the N encoded data streams from the MIMO decoder and produces N decoded data streams. A combiner combines the N decoded data streams into an output data stream.
摘要翻译：编码系统包括接收数据并产生N个数据流的馈送单元，其中N是至少两个。 N个编码器中的每一个接收N个数据流中的相应一个并产生编码数据流。多输入多输出（MIMO）编码器接收N个编码数据流，并将N个编码数据流编码为M个输出数据流，以供M个发射天线发射，其中M为至少两个。在解码系统中，MIMO解码器从T个接收天线接收T个数据流，并将T个数据流解码为N个编码数据流。 N个解码器中的每一个从MIMO解码器接收N个编码数据流中的相应一个，并产生N个解码数据流。组合器将N个解码的数据流组合成输出数据流。

29. 发明授权

US06801790B2 Structure for multiple antenna configurations 有权
标题翻译：多天线配置结构
公开(公告)号：US06801790B2
公开(公告)日：2004-10-05
申请号：US09764791
申请日：2001-01-17
申请人： Ashok N. Rudrapatna
发明人： Ashok N. Rudrapatna
IPC分类号： H04B138
CPC分类号： H04B7/0689 , H01Q1/246 , H01Q3/26 , H01Q21/245 , H04B7/0602 , H04B7/0871 , H04B7/10
摘要： An antenna array comprising at least two groups of antennas where each group comprises at least two pairs of antennas. Each of the pairs in a group contains orthogonally polarized antennas and at least one antenna in a pair is similarly polarized to one antenna in at least another pair in the group. The antenna array further comprises circuitry coupled to the antenna groups to select and activate certain antennas in a group to enable the antenna array to operate in either a beam forming/steering mode, a diversity mode or a MIMO mode or any combination thereof. The antennas in the groups are activated based on the characteristics of the signals being transmitted or received by the antenna array.
摘要翻译：一种包括至少两组天线的天线阵列，其中每组包括至少两对天线。组中的每一对包含正交极化的天线，并且成对中的至少一个天线在该组中至少另一对中类似地与一个天线极化。天线阵列还包括耦合到天线组的电路，以选择和激活组中的某些天线，以使得天线阵列能够以波束形成/转向模式，分集模式或MIMO模式或其任何组合工作。基于由天线阵列发送或接收的信号的特性，组中的天线被激活。

30. 发明授权

US06545975B1 Method of enhancing security for the transmission of information 有权
标题翻译：增强信息传递安全性的方法
公开(公告)号：US06545975B1
公开(公告)日：2003-04-08
申请号：US09294165
申请日：1999-04-19
申请人： Charles Robert Giardina , Ashok N. Rudrapatna
发明人： Charles Robert Giardina , Ashok N. Rudrapatna
IPC分类号： H04J1100
CPC分类号： H04J13/0048 , H04J13/12
摘要： Quasi-Walsh function systems are developed which allow multiple access as well as spectral spreading for interception and jamming prevention. Mutual interference is minimal due to orthogonal spreading. High signal hiding capability occurs by utilizing a large number of distinct orthogonal codes. An encoding algorithm is presented which allows a simple way of “keeping track” of the different systems of Quasi-Walsh systems as well as determining appropriate values for given users at specified chip values.
摘要翻译：准沃尔什函数系统被开发，允许多次访问以及频谱扩展以用于拦截和干扰预防。由于正交扩散，相互干扰最小。通过利用大量不同的正交码发生高信号隐藏能力。提出了一种编码算法，其允许简单的“跟踪”不同系统的准沃尔什系统的方式，以及确定给定用户在指定芯片值的适当值。

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