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51. 发明授权

US06775253B1 Adaptive signaling for wireless packet telephony 有权
标题翻译：无线分组电话的自适应信令
公开(公告)号：US06775253B1
公开(公告)日：2004-08-10
申请号：US09512644
申请日：2000-02-24
申请人： Prathima Agrawal , Jyh-Cheng Chen
发明人： Prathima Agrawal , Jyh-Cheng Chen
IPC分类号： H04J1500
CPC分类号： H04L65/1009 , H04L29/06027 , H04L65/1043 , H04L65/1069 , H04W36/08 , H04W80/04
摘要： Active packets are utilized by a mobile terminal in a wireless network to set-up a wireless call via a signaling process, and for mobility management via a mobility process as the mobile terminal moves from one cell to another in a subnet. Active packets instantiate an agent in the fixed network to handle signaling between the mobile terminal and the fixed network, and then instruct the agent to negotiate setup of an open channel between the mobile terminal and the destination device. Moreover, active packets foster the handoff of the mobile terminal as the terminal moves from one cell to another in a subnet. Finally, the signaling process and mobility process are coordinated so that lost active packets are mitigated during roaming by the mobile terminal.
摘要翻译：活动分组被无线网络中的移动终端用于经由信令过程建立无线呼叫，并且当移动终端在子网中从一个小区移动到另一个小区时，经由移动性过程进行移动性管理。活动分组实例化固定网络中的代理以处理移动终端和固定网络之间的信令，然后指示代理商协商移动终端与目的地设备之间的开放信道的建立。此外，当终端在子网中从一个小区移动到另一个小区时，活动分组促进移动终端的切换。最后，协调信令过程和移动过程，以便在移动终端漫游期间减轻活动分组丢失。

52. 发明授权

US06606661B1 Method for dynamic connection closing time selection 失效
标题翻译：动态连接关闭时间选择方法
公开(公告)号：US06606661B1
公开(公告)日：2003-08-12
申请号：US09470795
申请日：1999-12-23
申请人： Prathima Agrawal , Moncef Elaoud , Parameswaran Ramanathan , Cormac John Sreenan
发明人： Prathima Agrawal , Moncef Elaoud , Parameswaran Ramanathan , Cormac John Sreenan
IPC分类号： G06F1516
CPC分类号： H04L29/06 , H04L67/02 , H04L67/142 , H04L69/16 , H04L69/163 , H04L69/28 , H04L69/329
摘要： The present invention discloses a method of improving the performance of a server enabled to permit connections to clients to persist for a duration equal to a timer value, such as Web servers utilizing HTTP/1.1. In accordance with an embodiment of the present invention, the server estimates the load on the server and uses the estimate to modify the timer value. The timer value can be chosen to balance the need to increase the throughput as seen by the clients and the server need to service the largest possible number of clients without running out of resources. The timer value can be set to a longer value when the server load is light and a shorter value when the server load is heavy. In a preferred embodiment of the present invention, the server dynamically selects the largest timer that guarantees that the server does not run out of resources under the current measured load.
摘要翻译：本发明公开了一种提高服务器性能的方法，该服务器允许连接客户端持续等待定时器值的持续时间，例如使用HTTP / 1.1的Web服务器。根据本发明的实施例，服务器估计服务器上的负载，并使用估计来修改定时器值。可以选择定时器值以平衡客户端看到的增加吞吐量的需求，并且服务器需要为最大可能数量的客户端提供服务而不用尽资源。当服务器负载较轻时，定时器值可以设置为较长的值，当服务器负载较重时，可以设置较短的值。在本发明的优选实施例中，服务器动态地选择最大的定时器，以确保服务器在当前测量的负载下不会耗尽资源。

53. 发明授权

US06570926B1 Active techniques for video transmission and playback 有权
公开(公告)号：US06570926B1
公开(公告)日：2003-05-27
申请号：US09420097
申请日：1999-10-18
申请人： Prathima Agrawal , Jyh-Cheng Chen
发明人： Prathima Agrawal , Jyh-Cheng Chen
IPC分类号： H04B166
CPC分类号： H04N21/4351 , H04N21/235 , H04N21/4348 , H04N21/435 , H04N21/4431 , H04N21/8166 , H04N21/8193
摘要： Encoding a real-time and non-real-time video stream, encapsulating the encoded video stream along with the decoding software corresponding to the encoding program into active packets at the Application and Services layer, and transmitting active the packets to the receiving terminal, which then supplies the receiver with the necessary decoding software to play any type of encoded video stream without having the associated decoding software pre-loaded.

54. 发明授权

US06490259B1 Active link layer and intra-domain mobility for IP networks 有权
标题翻译： IP网络的活动链路层和域内移动性
公开(公告)号：US06490259B1
公开(公告)日：2002-12-03
申请号：US09512514
申请日：2000-02-24
申请人： Prathima Agrawal , Jyh-Cheng Chen
发明人： Prathima Agrawal , Jyh-Cheng Chen
IPC分类号： H04Q700
CPC分类号： H04W8/22 , H04L1/16 , H04L1/1809 , H04L45/00 , H04L45/54 , H04L45/566 , H04W8/24 , H04W36/0011 , H04W36/08 , H04W80/04
摘要： Active packets are utilized by a mobile terminal in a wireless network to manage the micro-mobility which includes both link layer mobility and intra-domain mobility of a wireless connection as the mobile terminal moves from one cell to another in a domain of a network. Active packets convey instructions and data so nodes in the domain may update forwarding tables maintained by each of the devices in the domain. The forwarding table entries contain both link layer entries and network layer entries to efficiently handle roaming by the mobile terminal.
摘要翻译：活动分组被无线网络中的移动终端利用以管理微移动性，其包括当移动终端从网络域中的一个小区移动到另一个小区时链路层移动性和无线连接的域内移动性。活动分组传送指令和数据，使得域中的节点可以更新由域中的每个设备维护的转发表。转发表项包含链路层条目和网络层条目，以有效地处理移动终端的漫游。

55. 发明授权

US06320847B1 Method and apparatus for reduction of call setup time using anticipation technique for multimedia applications in widely distributed networks 失效
标题翻译：用于在广泛分布式网络中用于多媒体应用的预期技术来减少呼叫建立时间的方法和装置
公开(公告)号：US06320847B1
公开(公告)日：2001-11-20
申请号：US08972617
申请日：1997-11-18
申请人： Dharma P. Agrawal , Prathima Agrawal , Ashok N. Rudrapatna
发明人： Dharma P. Agrawal , Prathima Agrawal , Ashok N. Rudrapatna
IPC分类号： G01R3108
CPC分类号： H04Q3/66 , H04Q3/002 , H04Q2213/1307 , H04Q2213/13095 , H04Q2213/13103 , H04Q2213/13106 , H04Q2213/13141 , H04Q2213/13176 , H04Q2213/13204 , H04Q2213/1331 , H04Q2213/13339
摘要： In a widely distributed digital communication network call delays and eventual outcome are anticipated (i.e., expected call outcome) at the initiation of a call at an originating terminal and the call is completed by signal switching to its destination terminal and by decreasing the number of related message transfers between network controllers and hubs required to complete the balance of administrative refinements of the call connection. The routing steps for setting up the call trajectory to the destination hub are completed immediately before the administrative steps, such as authentication, access control, bandwidth availability etc., are performed. Administrative refinements subsequent to the preliminary call set up are performed in a distributive manner. Administrative and capacity items are determined and completed post route determination and computed or accessed in parallel making this information available for a final call set up. If this information is adverse the call is immediately terminated. In one aspect the processors for administrative and capacity determination are connected in a parallel manner and work concurrently.
摘要翻译：在广泛分布的数字通信网络中，呼叫延迟和最终结果是预期的（即预期的呼叫结果），在起始终端发起呼叫，并且通过信号切换到目的地终端完成呼叫，并通过减少相关的数量网络控制器和集线器之间的消息传输是完成呼叫连接的管理改进的平衡所必需的。在执行诸如认证，访问控制，带宽可用性等的管理步骤之前，立即完成用于将呼叫轨迹设置到目的地集线器的路由步骤。在初步呼叫建立之后的管理细化以分配方式执行。管理和容量项目确定并完成路线后确定并且并行计算或访问，使得该信息可用于最终呼叫建立。如果该信息不利，则呼叫立即终止。一方面，用于管理和容量确定的处理器以并行方式连接并同时工作。

56. 发明授权

US06188905B1 Intelligent dynamic channel allocation scheme for a mobile communications network 失效
标题翻译：用于移动通信网络的智能动态信道分配方案
公开(公告)号：US06188905B1
公开(公告)日：2001-02-13
申请号：US08941043
申请日：1997-09-30
申请人： Ashok N. Rudrapatna , Dharma P. Agrawal , Prathima Agrawal
发明人： Ashok N. Rudrapatna , Dharma P. Agrawal , Prathima Agrawal
IPC分类号： H04Q722
CPC分类号： H04W28/26 , H04W8/18 , H04W24/00 , H04W36/245 , H04W36/32 , H04W72/048
摘要： Intelligent allocation of wireless resources can help avoid the problems of dropped calls in a mobile communications network. A service for allocating resources is designed to develop profiles of subscribers' mobility. That is, profiles are developed for routes, traveled by subscribers at certain days and times. For example, some subscribers commute to and from work at relatively fixed times. By compiling this information in the profile and tracking the movement of the subscriber, the mobile network can anticipate the subscriber's movement into a next cell. Thus, wireless resources in the next cell can be reserved prior to the anticipated handover of an ongoing call involving the subscriber. Thus, uninterrupted service can be maintained and dropped calls can be avoided.
摘要翻译：无线资源的智能分配可以帮助避免移动通信网络中掉话的问题。用于分配资源的服务旨在开发用户流动性的配置文件。也就是说，个人资料是针对路线开发的，由用户在某些日子和时间旅行。例如，一些用户在相对固定的时间上下班。通过在配置文件中编译该信息并跟踪用户的移动，移动网络可以预期用户进入下一个小区。因此，可以在涉及用户的正在进行的呼叫的预期切换之前保留下一个小区中的无线资源。因此，可以保持不间断的服务，并且可以避免掉话。

57. 发明授权

US6075777A Network flow framework for online dynamic channel allocation 失效
标题翻译：用于在线动态信道分配的网络流框架
公开(公告)号：US6075777A
公开(公告)日：2000-06-13
申请号：US697159
申请日：1996-08-21
申请人： Prathima Agrawal , Balakrishnan Narendran , Narayanan Shivakumar
发明人： Prathima Agrawal , Balakrishnan Narendran , Narayanan Shivakumar
IPC分类号： H04W16/10 , H04J1/16
CPC分类号： H04W16/10 , H04W72/04 , H04W76/02
摘要： The invention relates to a dynamic channel allocation system for a mobile communication system wherein mobile units communicate with the base station on allotted channels. The channel allocations are determined according to a framework of network flows including flow paths with nodes representing active mobile units, base stations and channels used for communication between active mobile units and their respective base stations. A new call from a mobile unit is added by finding the shortest available augmenting path for the added unit. The edges between nodes can include cost and capacity factors which can be used to determine desirable reconfigurations for the network.
摘要翻译：本发明涉及用于移动通信系统的动态信道分配系统，其中移动单元在分配的信道上与基站进行通信。信道分配根据网络流的框架确定，包括具有表示活动移动单元的节点的流量路径，用于活动移动单元与其各自基站之间的通信的基站和信道。通过找到添加的单元的最短可用扩充路径来增加来自移动单元的新呼叫。节点之间的边缘可以包括成本和容量因素，可以用于确定网络的理想的重新配置。

58. 发明授权

US6052598A Method for predicting the location of a mobile station in a mobile communications network 失效
标题翻译：用于预测移动台在移动通信网络中的位置的方法
公开(公告)号：US6052598A
公开(公告)日：2000-04-18
申请号：US941231
申请日：1997-09-30
申请人： Ashok N. Rudrapatna , Dharma P. Agrawal , Prathima Agrawal
发明人： Ashok N. Rudrapatna , Dharma P. Agrawal , Prathima Agrawal
IPC分类号： H04W64/00 , H04Q7/20
CPC分类号： H04W64/00 , H04W4/028
摘要： The approximate position of a mobile station in a cell can be predicted by measuring the signal strength between the mobile station and the base station of the cell in which it is located and the base stations of the neighboring cells. After a series of instantaneous signal strength measurements have been collected, the velocity and direction of the mobile unit can be determined. Based on the velocity and direction of the mobile unit, future locations of the mobile unit can be predicted including the projected signal strength between the mobile station and the base stations of the cell in which it is located and neighboring cells. Analyzing the projected signal strength values, the time when the mobile unit will require handover to a neighboring cell can be determined and if desired, resources in a neighboring cell can be allocated in anticipation of the mobile unit being handed over to that cell. New signal strength measurements are periodically collected and new projections are made to increase the accuracy of the estimate of when handover will occur and to what neighboring cell.
摘要翻译：移动站在小区中的大致位置可以通过测量移动站与其所在的小区的基站与相邻小区的基站之间的信号强度来预测。在收集了一系列瞬时信号强度测量之后，可以确定移动单元的速度和方向。基于移动单元的速度和方向，可以预测移动单元的未来位置，包括移动站与其所在的小区的基站和相邻小区之间的投影信号强度。分析投影信号强度值，可以确定移动单元需要切换到相邻小区的时间，并且如果需要，可以分配相邻小区中的资源以预期移动单元被切换到该小区。定期收集新的信号强度测量值，并进行新的预测，以提高切换发生时估计的准确度以及相邻小区的估计精度。

59. 发明授权

US5768500A Interrupt-based hardware support for profiling memory system performance 失效
标题翻译：基于中断的硬件支持，用于分析内存系统性能
公开(公告)号：US5768500A
公开(公告)日：1998-06-16
申请号：US749043
申请日：1996-11-14
申请人： Prathima Agrawal , Aaron Jay Goldberg , John Andrew Trotter
发明人： Prathima Agrawal , Aaron Jay Goldberg , John Andrew Trotter
IPC分类号： G06F9/48 , G06F11/34
CPC分类号： G06F11/348 , G06F11/3409 , G06F11/3447 , G06F2201/805 , G06F2201/86 , G06F2201/88 , G06F2201/885
摘要： Fueled by higher clock rates and superscalar technologies, growth in processor speed continues to outpace improvement in memory system performance. Reflecting this trend, architects are developing increasingly complex memory hierarchies to mask the speed gap, compiler writers are adding locality enhancing transformations to better utilize complex memory hierarchies, and applications programmers are re-coding their algorithms to exploit memory systems. All of these groups need empirical data on memory behavior to guide their optimizations. This paper describes how to combine simple hardware support and sampling techniques to obtain such data without appreciably perturbing system performance. By augmenting a cache miss counter with a compare register and interrupt line such that the processor is interrupted when the counter matches the compare value, we can sample system state and develop cache miss profiles that associate cache misses with specific processes, procedures, call stacks, addresses, or user defined aspects of system state. This idea is implemented in the Mprof prototype that profiles data stall cycles, first level cache misses, and second level misses on the sun Sparc 10/41. Simple case studies are provided to illustrate Mprof's features.
摘要翻译：在更高的时钟频率和超标量技术的推动下，处理器速度的增长继续超过内存系统性能的提升。反映这种趋势，架构师正在开发越来越复杂的内存层次来掩盖速度差距，编译器编写者正在增加局部性增强转换，以更好地利用复杂的内存层次，应用程序员正在重新编码其算法以利用内存系统。所有这些组都需要关于记忆行为的实证数据来指导其优化。本文介绍了如何组合简单的硬件支持和采样技术来获得这样的数据，而不会明显地扰乱系统性能。通过增加具有比较寄存器和中断线的高速缓存未命中计数器，使得当计数器与比较值匹配时，处理器中断，我们可以对系统状态进行采样，并开发将高速缓存未命中与特定进程，过程，调用堆栈，地址或用户定义的方面的系统状态。这个想法是在Mprof原型中实现的，该原型在太阳Sparc 10/41上配置数据失速循环，一级高速缓存未命中和二级缺失。提供简单的案例研究来说明Mprof的功能。

60. 发明授权

US5093920A Programmable processing elements interconnected by a communication network including field operation unit for performing field operations 失效
标题翻译：可编程处理元件由通信网络互连，包括用于执行现场操作的现场操作单元
公开(公告)号：US5093920A
公开(公告)日：1992-03-03
申请号：US408459
申请日：1989-09-15
申请人： Prathima Agrawal , William J. Dally , Anjur S. Krishnakumar
发明人： Prathima Agrawal , William J. Dally , Anjur S. Krishnakumar
IPC分类号： G06F17/50
CPC分类号： G06F17/5022
摘要： An arrangement for implementing graph operations, generally, and circuit simulations in particular employing a plurality of substantially identical high speed special purpose processing elements (PE) that are flexibly interconnected through a switch to form a cluster. In addition to the processing element (PE) being programmable, the interconnection switch permits dynamically altered routing of signals between the processing elements. The processing elements include a queue unit which permits high speed asynchronous communication between the elements. Additional advantage is attained with a hierarchical arrangement where a plurality of clusters are interconnected in an n-cube arrangement, and all of the clusters communicate with a host computer.
摘要翻译：一般来说，用于实现图形操作以及电路模拟的装置，特别是采用多个基本上相同的高速专用处理元件（PE），该高速专用处理元件（PE）通过开关灵活互连以形成一个集群。除了可编程的处理元件（PE）之外，互连开关允许在处理元件之间动态地改变信号的路由。处理元件包括允许元件之间的高速异步通信的队列单元。通过分层布置来实现额外的优点，其中多个簇以n立方体布置互连，并且所有簇与主计算机通信。

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