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21. 发明申请

US20100272193A1 DATA COMMUNICATION USING 2D BAR CODES 有权
标题翻译：使用2D BAR代码的数据通信
公开(公告)号：US20100272193A1
公开(公告)日：2010-10-28
申请号：US12561015
申请日：2009-09-16
申请人： Farooq Khan , Jiann-An Tsai , Sridhar Rajagopal , Bill Semper , Zhouyue Pi , Ying Li
发明人： Farooq Khan , Jiann-An Tsai , Sridhar Rajagopal , Bill Semper , Zhouyue Pi , Ying Li
IPC分类号： H04L27/00
CPC分类号： H04L1/0075 , H04L1/0041 , H04L1/1812
摘要： A Two-Dimensional (2D) code receiver and transmitter, and methods for their operation in a 2D code communication system, are provided. The method for operating the 2D code receiver includes receiving a sequence of 2D codes from a 2D code transmitter having data encoded therein, wherein the 2D codes of the sequence are received in succession, and decoding the received a sequence of 2D codes into the data.
摘要翻译：提供二维（2D）码接收机和发射机及其在二维码通信系统中的操作方法。用于操作2D代码接收器的方法包括从具有其中编码的数据的2D代码发送器接收2D代码序列，其中序列的2D代码被连续地接收，并且将接收的2D代码序列解码为数据。

22. 发明授权

US07593339B2 Rate control for packet-based wireless communication 有权
标题翻译：基于分组的无线通信的速率控制
公开(公告)号：US07593339B2
公开(公告)日：2009-09-22
申请号：US11179248
申请日：2005-07-12
申请人： Matthew B. Shoemake , Sridhar Rajagopal
发明人： Matthew B. Shoemake , Sridhar Rajagopal
IPC分类号： H04L12/26
CPC分类号： H04L1/20 , H04L1/0002 , H04L1/0026 , H04L1/1607
摘要： The present invention provides a method and system for controlling the data rate in packet based wireless communications. Then, using the probability of error, the invention calculates the throughput and drop probability for two or more data rates and selects the data rate with highest throughput. In one embodiment of the invention, the probability of error based on information passed back from the receiver regarding decoding errors. In another embodiment, the probability of error is based on acknowledgement packets returned by the receiver.
摘要翻译：本发明提供了一种用于在基于分组的无线通信中控制数据速率的方法和系统。然后，利用错误概率，本发明计算两个或多个数据速率的吞吐量和丢弃概率，并选择吞吐量最高的数据速率。在本发明的一个实施例中，基于从接收机传回关于解码错误的信息的错误概率。在另一个实施例中，错误的概率基于接收机返回的确认分组。

23. 发明申请

US20080189700A1 Admission Control for Virtual Machine Cluster 审中-公开
标题翻译：虚拟机集群的接纳控制
公开(公告)号：US20080189700A1
公开(公告)日：2008-08-07
申请号：US12017258
申请日：2008-01-21
申请人： Rene W. Schmidt , Sridhar Rajagopal
发明人： Rene W. Schmidt , Sridhar Rajagopal
IPC分类号： G06F9/455
CPC分类号： G06F11/203 , G06F9/455 , G06F9/45558 , G06F11/1084 , G06F11/2033 , G06F11/2035 , G06F11/2046 , G06F12/08 , G06F2009/45587
摘要： One embodiment of the present invention is a system including: (a) plural virtualization systems configured as a cluster; (b) a failover system that, responsive to an interruption of, or on, a particular one of the virtualization systems, transitions at least one virtual machine to another virtualization system of the cluster and resumes thereon computations of the transitioned virtual machine; and (c) a management system that tracks, for each virtual machine, a set of resource requirements, the management system admitting virtual machine computations to the cluster based on an admission control policy that, consonant with the resource requirements of virtual machines provisioned to any particular set of virtualization systems, assures sufficient excess capacity on other virtualization systems of the cluster to support, in the event of interruption of the particular set, transition of all virtual machines operative thereon to the other virtualization systems of the cluster.
摘要翻译：本发明的一个实施例是一种系统，包括：（a）配置为集群的多个虚拟化系统; （b）故障切换系统，其响应于所述虚拟化系统中的特定虚拟化系统的中断或在其上，将至少一个虚拟机转换到所述集群的另一个虚拟化系统，并在其上恢复所述转换的虚拟机的计算; 和（c）管理系统，为每个虚拟机跟踪一组资源需求，管理系统基于允许控制策略来接纳虚拟机计算到集群，该准入控制策略符合虚拟机的资源需求，特定的一组虚拟化系统，确保集群的其他虚拟化系统足够的过剩容量，在特定集合的中断的情况下，支持在其上运行的所有虚拟机向群集的其他虚拟化系统的转换。

24. 发明申请

US20060029145A1 Method and apparatus for encoding interleaving and mapping data to facilitate GBPS data rates in wireless systems 有权
标题翻译：用于编码交织和映射数据以便于无线系统中的GBPS数据速率的方法和装置
公开(公告)号：US20060029145A1
公开(公告)日：2006-02-09
申请号：US11114752
申请日：2005-04-25
申请人： Sridhar Rajagopal , Matthew Shoemake , John Terry
发明人： Sridhar Rajagopal , Matthew Shoemake , John Terry
IPC分类号： H04L23/02
CPC分类号： H04L25/4917 , H03M13/2707 , H03M13/4161 , H04L1/0041 , H04L1/0054 , H04L1/006 , H04L1/0069 , H04L1/007 , H04L1/0071 , H04L27/34
摘要： A method and apparatus for encoding data for wireless transmission. The invention includes multi-level coding in which data is partitioned between two encoders, one for encoding Most Significant Bits (MSBs) and the other for encoding Least Significant Bits (LSBs). By partition bits separately for the MSBs and LSBs, the complexity of the decoder may be reduced. The MSBs and LSBs are interleaved such that each MSB is a function of just one LSB, simplifying branch metric selection during Viterbi decoding. This also allows parallel de-interleaving by the receiver, which reduces the interleaving latency of the receiver. A block interleaver jointly optimizes the symbol hamming distance of the symbols and the bit hamming distance of each constituent encoder for the MSBs and LSBs.
摘要翻译：一种用于编码无线传输数据的方法和装置。本发明包括多级编码，其中数据在两个编码器之间分配，一个用于编码最高有效位（MSB），另一个用于编码最低有效位（LSB）。通过分开MSB和LSB的分配位，解码器的复杂度可能会降低。 MSB和LSB被交错，使得每个MSB是仅一个LSB的函数，从而简化维特比解码期间的分支度量选择。这也允许接收机的并行解交织，这降低了接收机的交织等待时间。块交织器共同优化符号的符号汉明距离和每个组成编码器对于MSB和LSB的比特汉明距离。

25. 发明申请

US20050237922A1 Virtual side channels for digital wireless communication systems 有权
标题翻译：用于数字无线通信系统的虚拟侧通道
公开(公告)号：US20050237922A1
公开(公告)日：2005-10-27
申请号：US11114646
申请日：2005-04-25
申请人： Matthew Shoemake , Sridhar Rajagopal , David Brenner
发明人： Matthew Shoemake , Sridhar Rajagopal , David Brenner
IPC分类号： H04J11/00 , H04L27/26
CPC分类号： H04L27/2602
摘要： The present invention provides a method for enabling side channel communication between wireless devices. In one embodiment of the invention the guard tones in wireless OFDM signals are used for side channel communication. In another embodiment of the invention, unused bits in OFDM symbols are used as side channels instead of being padded with zeros or random bits.
摘要翻译：本发明提供了一种用于实现无线设备之间的侧信道通信的方法。在本发明的一个实施例中，无线OFDM信号中的保护音调用于侧信道通信。在本发明的另一实施例中，OFDM符号中的未使用的比特用作侧信道，而不是用零或随机比特填充。

26. 发明授权

US08924967B2 Maintaining high availability of a group of virtual machines using heartbeat messages 有权
标题翻译：使用心跳消息维护一组虚拟机的高可用性
公开(公告)号：US08924967B2
公开(公告)日：2014-12-30
申请号：US13096188
申请日：2011-04-28
申请人： Michael Nelson , Keith Farkas , Elisha Ziskind , Sridhar Rajagopal , Guoqiang Shu , Ron Passerini , Joanne Ren
发明人： Michael Nelson , Keith Farkas , Elisha Ziskind , Sridhar Rajagopal , Guoqiang Shu , Ron Passerini , Joanne Ren
IPC分类号： G06F15/173 , G06F9/455 , G06F9/46 , G06F11/00 , G06F9/54
CPC分类号： G06F11/1438 , G06F9/45533 , G06F9/542 , G06F11/0757
摘要： Embodiments maintain high availability of software application instances in a fault domain. Subordinate hosts are monitored by a master host. The subordinate hosts publish heartbeats via a network and datastores. Based at least in part on the published heartbeats, the master host determines the status of each subordinate host, distinguishing between subordinate hosts that are entirely inoperative and subordinate hosts that are operative but partitioned (e.g., unreachable via the network). The master host may restart software application instances, such as virtual machines, that are executed by inoperative subordinate hosts or that cease executing on partitioned subordinate hosts.
摘要翻译：实施例在故障域中保持软件应用程序实例的高可用性。主机由主机监控。下级主机通过网络和数据存储发布心跳。至少部分地基于所发布的心跳，主主机确定每个从属主机的状态，区分完全不起作用的下级主机和可操作但被分区的下级主机（例如，经由网络不可达）。主主机可以重新启动由不能操作的下属主机执行的软件应用程序实例，例如虚拟机，或者停止在分区的下级主机上执行。

27. 发明授权

US08509688B2 Apparatus and method for mac logical channel selection for operating piconets in body area networks 有权
标题翻译：用于在身体区域网络中操作微微网的mac逻辑信道选择的装置和方法
公开(公告)号：US08509688B2
公开(公告)日：2013-08-13
申请号：US12688604
申请日：2010-01-15
申请人： Sridhar Rajagopal , Farooq Khan
发明人： Sridhar Rajagopal , Farooq Khan
IPC分类号： H04B7/00
CPC分类号： H04W72/0426 , H04W16/14 , H04W84/18
摘要： A portable device capable of controlling a piconet selects a logical channel when forming the piconet. The device includes a controller configured to start a first piconet. The controller couples to at least one secondary device in the first piconet. The portable device also includes a transmitter configured to communicate with the at least one secondary device via a wireless communication channel. The controller is configured to select communication channel resources based at least in part on resources allocated to a second piconet in order to mitigate interference between the piconets. The controller is configured to form the first piconet to operate in either a non-interference mode when the controller is able to establish communications with a second controller in the second piconet or a coexistence interference mitigation mode when the controller is unable to establish communications with the second controller in the second piconet.
摘要翻译：能够控制微微网的便携式设备在形成微微网时选择逻辑信道。该设备包括被配置为启动第一微微网的控制器。控制器耦合到第一微微网中的至少一个辅助设备。便携式设备还包括被配置为经由无线通信信道与至少一个辅助设备进行通信的发射机。控制器被配置为至少部分地基于分配给第二微微网的资源来选择通信信道资源，以便减轻微微网之间的干扰。当控制器能够建立与第二微微网中的第二控制器的通信或者当控制器不能建立与第二微微网的建立通信的共存干扰减轻模式时，控制器被配置为形成第一微微网以无干扰模式操作第二个微控制器的第二个控制器。

28. 发明申请

US20130057432A1 METHOD AND APPARATUS FOR BEAM BROADENING FOR PHASED ANTENNA ARRAYS USING MULTI-BEAM SUB-ARRAYS 审中-公开
标题翻译：使用多束子阵列的波束天线阵列的波束扩展方法和装置
公开(公告)号：US20130057432A1
公开(公告)日：2013-03-07
申请号：US13558208
申请日：2012-07-25
申请人： Sridhar Rajagopal , Kaushik Josiam , Zhouyue Pi
发明人： Sridhar Rajagopal , Kaushik Josiam , Zhouyue Pi
IPC分类号： H01Q3/24
CPC分类号： H01Q3/26 , H01Q25/002
摘要： A transmitter or receiver may use beamforming methods for transmitting or receiving a signal in a communication system. The method for transmitting includes determining a first beamforming weight associated with a total number of antennas in an antenna array. The method also includes transmitting a first signal in a first beam having a first beam width using the total number of antennas by applying the first predetermined beamforming weight. The method further includes determining a second beamforming weight associated with a first sub-array of antennas in the antenna array and determining a third beamforming weight associated with a second sub-array of antennas in the antenna array. The method still further includes transmitting a second signal in a second beam having a second beam width using the first sub-array of antennas by applying the second beamforming weight and the second sub-array of antennas by applying the third beamforming weight.
摘要翻译：发射机或接收机可以使用波束成形方法在通信系统中发送或接收信号。用于发送的方法包括确定与天线阵列中的天线总数相关联的第一波束成形权重。该方法还包括通过应用第一预定波束形成权重，使用总天线数量在具有第一波束宽度的第一波束中发送第一信号。该方法还包括确定与天线阵列中的天线的第一子阵列相关联的第二波束成形权重，并且确定与天线阵列中的天线的第二子阵列相关联的第三波束成形权重。该方法还包括：通过应用第三波束形成权重应用第二波束形成权重和第二子阵列天线，使用第一天线子阵列在具有第二波束宽度的第二波束中发送第二信号。

29. 发明授权

US08374201B2 Preamble design for supporting multiple topologies with visible light communication 有权
标题翻译：序言设计支持可见光通信的多个拓扑
公开(公告)号：US08374201B2
公开(公告)日：2013-02-12
申请号：US12871770
申请日：2010-08-30
申请人： Sridhar Rajagopal , Eun Tae Won , Ying Li
发明人： Sridhar Rajagopal , Eun Tae Won , Ying Li
IPC分类号： H04J3/00
CPC分类号： H04B10/116 , H04B10/1125 , H04B10/1149 , H04L7/041 , H04L7/046
摘要： For use in visible light communication (VLC), methods for synchronization with multiple topology support and for transmitting an extended preamble. The method for synchronization includes transmitting a two-part preamble sequence. The preamble sequence includes one or more repetitions of a fast locking pattern (FLP) configured to be used for clock synchronization, and one or more repetitions of a topology dependent pattern (TDP) configured to be used to distinguish a plurality of VLC topologies. The method for transmitting an extended preamble includes generating an extended preamble and transmitting the extended preamble during a receive or idle mode for maintaining visibility support and for better synchronization performance.
摘要翻译：用于可见光通信（VLC），用于与多个拓扑支持同步并用于发送扩展前同步码的方法。同步的方法包括发送两部分的前导码序列。前导序列包括被配置为用于时钟同步的快速锁定模式（FLP）的一个或多个重复，以及被配置为用于区分多个VLC拓扑的拓扑依赖模式（TDP）的一个或多个重复。用于发送扩展前同步码的方法包括在接收或空闲模式期间生成扩展前导码并发送扩展前同步码，以便维持可视性支持和更好的同步性能。

30. 发明申请

US20130028341A1 COMBINING BASEBAND PROCESSING AND RADIO FREQUENCY BEAM STEERING IN WIRELESS COMMUNICATION SYSTEMS 有权
标题翻译：无线通信系统中组合基带处理和无线电频率波束转向
公开(公告)号：US20130028341A1
公开(公告)日：2013-01-31
申请号：US13552565
申请日：2012-07-18
申请人： Omar El Ayach , Sridhar Rajagopal , Shadi Abu-Surra , Zhouyue Pi
发明人： Omar El Ayach , Sridhar Rajagopal , Shadi Abu-Surra , Zhouyue Pi
IPC分类号： H04B7/02
CPC分类号： H04B7/0478 , H04B7/0456 , H04B7/0465 , H04B7/0617 , H04B7/0626 , H04B7/0632 , H04B7/0639 , H04B7/065 , H04B7/0695 , H04B7/088 , H04L25/0224
摘要： A method and apparatus enable combined baseband (BB) and radio frequency (RF) processing of signals. The method includes receiving, by a receiver, channel estimation information for a channel between a transmitter and the receiver. The method includes identifying a plurality of paths in the channel based on the channel estimation information. The method includes calculating an RF precoding matrix for precoding one or more signals to be transmitted on each of the identified paths. The RF precoding matrix includes a phase shift for each of the identified paths. Additionally, the method includes calculating a BB precoding matrix for precoding the one or more signals by a BB precoding unit associated with the transmitter.
摘要翻译：一种方法和装置使能信号的组合基带（BB）和射频（RF）处理。该方法包括由接收机接收用于发射机和接收机之间的信道的信道估计信息。该方法包括基于信道估计信息识别信道中的多个路径。该方法包括计算一个RF预编码矩阵，用于对每个所识别的路径上要发送的一个或多个信号进行预编码。 RF预编码矩阵包括针对每个所识别的路径的相移。此外，该方法包括：计算BB预编码矩阵，用于通过与发射机相关联的BB预编码单元对一个或多个信号进行预编码。

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