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1. 发明授权

US5889816A Wireless adapter architecture for mobile computing 失效
标题翻译：用于移动计算的无线适配器架构
公开(公告)号：US5889816A
公开(公告)日：1999-03-30
申请号：US594617
申请日：1996-02-02
申请人： Prathima Agrawal , Mark Robert Cravatts , John Andrew Trotter , Mani Bhushan Srivastava
发明人： Prathima Agrawal , Mark Robert Cravatts , John Andrew Trotter , Mani Bhushan Srivastava
IPC分类号： H04L29/10 , H04L12/28 , H04L12/56 , H04Q11/04 , H04B1/30 , H04L5/16
CPC分类号： H04Q11/0478 , H04W84/14 , H04L2012/5607 , H04L2012/5616 , H04L2012/5619
摘要： A adapter for wireless networking provides for reconfigerable media access control and data packet formats. The flexible adapter comprises a modem interface for controlling an RF modem for transmitting data signals to and receiving data signals from another RF modem; a media access control circuit; and a computer system interface circuit. The computer system interface circuit provides an interface between a host computer system, the modem interface circuit and the media access control circuit.
摘要翻译：用于无线网络的适配器提供可重构的媒体访问控制和数据包格式。柔性适配器包括用于控制RF调制解调器的调制解调器接口，用于向另一个RF调制解调器发送数据信号并从其接收数据信号媒体访问控制电路; 和计算机系统接口电路。计算机系统接口电路提供主计算机系统，调制解调器接口电路和媒体访问控制电路之间的接口。

2. 发明授权

US5774461A Medium access control and air interface subsystem for an indoor wireless ATM network 失效
标题翻译：用于室内无线ATM网络的媒体接入控制和空中接口子系统
公开(公告)号：US5774461A
公开(公告)日：1998-06-30
申请号：US534761
申请日：1995-09-27
申请人： Eoin Hyden , Mani Bhushan Srivastava , John Andrew Trotter , Prathima Agrawal , Paul Krzyzanowski
发明人： Eoin Hyden , Mani Bhushan Srivastava , John Andrew Trotter , Prathima Agrawal , Paul Krzyzanowski
IPC分类号： H04B7/26 , H04L12/28 , H04L12/56 , H04Q11/04 , H04W72/12 , H04W84/12
CPC分类号： H04Q11/0478 , H04L1/0041 , H04L2012/5607 , H04L2012/5615 , H04L2012/5616 , H04W72/1289 , H04W84/12
摘要： A system for delivering packetized data in a network dynamically assigns a unique address to a mobile unit, allocates bandwidth within a wireless link by a token scheme and provides forward error correction for the packet. The system wirelessly transports the packets between a base station and an end point which is responsive to a link cell for linking the base station and the end point. The link cell contains a header and a body. The header in turn contains a forward error correction code, a radioport id and a token. The forward error correction code provides error detection and error correction that relies solely on a one-way communication of data bits from a sender to a receiver. The radioport id is a logical id assigned such that each radio-port in a vicinity has a unique id. The token enables the wireless transportation over a selected channel of the packets between the base station and the end point. The token is utilized to allocate the selected channel from a plurality of channels. A method is also described for delivering packetized data between an endpoint and a base station.
摘要翻译：用于在网络中传送分组化数据的系统动态地向移动单元分配唯一地址，通过令牌方案在无线链路内分配带宽，并为分组提供前向纠错。系统在基站和端点之间无线地传输分组，该终端响应于用于链接基站和终点的链路小区。链接单元格包含标题和正文。标题依次包含前向纠错码，无线端口ID和令牌。前向纠错码提供错误检测和纠错，其仅依赖于从发送器到接收器的数据位的单向通信。无线电端口id是分配的逻辑ID，使得附近的每个无线电端口具有唯一的ID。令牌使得能够在基站和终点之间的分组的选定信道上进行无线传输。令牌用于从多个信道分配所选择的信道。还描述了用于在端点和基站之间递送分组化数据的方法。

3. 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。

4. 发明授权

US06587877B1 Management of time and expense when communicating between a host and a communication network 失效
标题翻译：在主机和通信网络之间进行通信时管理时间和费用
公开(公告)号：US06587877B1
公开(公告)日：2003-07-01
申请号：US08823564
申请日：1997-03-25
申请人： Frederick Douglis , David Morris Kristol , Paul Krzyzanowski , John Andrew Trotter , James Paul Sienicki , William N. Schilit
发明人： Frederick Douglis , David Morris Kristol , Paul Krzyzanowski , John Andrew Trotter , James Paul Sienicki , William N. Schilit
IPC分类号： G06F15173
CPC分类号： G06F17/30902
摘要： A system and method for managing time and expense when communicating between a host and multiple network connections. A server program, inserted between an information requesting device and the network connections, reconfigures the information requesting device forcing the information requesting device to pass all requests through the server program. The server program then determines what type of network is being connected. Additionally, the server program makes costs visible to the user, warns the user when pre-specified budgets are exceeded, postpones actions to a later time when conditions are met, and automatically adapts user customization and system configuration values to the changing conditions of use. This allows asynchronous style browsing in which users can work disconnected from a cache of documents or trade off communication cost against information needs.
摘要翻译：一种用于在主机和多个网络连接之间进行通信时管理时间和费用的系统和方法。插入在信息请求设备和网络连接之间的服务器程序重新配置信息请求设备，迫使信息请求设备通过服务器程序传递所有请求。服务器程序然后确定正在连接什么类型的网络。此外，服务器程序使成本对用户可见，在超过预先指定的预算时警告用户，在满足条件的情况下推迟操作，并根据不断变化的使用条件自动调整用户定制和系统配置值。这允许异步风格浏览，用户可以在其中工作与文档缓存断开连接，或抵消信息需求的通信成本。

5. 发明授权

US06611529B1 Priority access for real-time traffic in contention-based networks 有权
标题翻译：在基于争用的网络中实时流量的优先级访问
公开(公告)号：US06611529B1
公开(公告)日：2003-08-26
申请号：US09261693
申请日：1999-03-03
申请人： Anjur Sundaresan Krishnakumar , Joao Luis Sobrinho , John Andrew Trotter
发明人： Anjur Sundaresan Krishnakumar , Joao Luis Sobrinho , John Andrew Trotter
IPC分类号： H04J316
CPC分类号： H04L12/40163 , H04L12/413 , H04L12/44
摘要： In a contention-based network, a station, whose transmission is colliding with the transmission of another station and which heretofore would have transmitted a data packet immediately following its colliding transmission—as, for example, in a blackburst contention—suspends transmission immediately upon termination of the collision and, if necessary, at a particular point(s) in time during the collision. The station recommences transmission after a predetermined non-zero duration of time, or “time notch”, during which the medium is idle. In particular, a station that has won a blackburst contention separates its blackburst signal from its subsequent data transmission by a certain amount of time during which the medium is idle. Moreover, a station participating in a blackburst contention may cause the occurrence of a time notch at particular points in time during the contention in order that its access priority vis-a-vis other stations be determined.
摘要翻译：在基于争用的网络中，其传输正在与另一站的传输相冲突，并且其将在其冲突传输之后立即传输数据分组，例如在黑爆争用中立即在终止时暂停传输的碰撞，如有必要，在碰撞期间的特定时间点。在该介质空闲之后，该站重新开始经过预定的非零持续时间或“时间缺口”之后的传输。特别地，已经赢得黑爆争端的站将其黑爆信号与其后续数据传输分离一定量的介质空闲时间。此外，参与黑名单争用的电台可能会在争用期间的特定时间点发生时差，以便确定其对其他电台的访问优先级。

6. 发明授权

US5862141A Variable bitrate radio modem system to enhance data transmission and reduce error rates 失效
标题翻译：可变比特率无线调制解调器系统，以增强数据传输并降低错误率
公开(公告)号：US5862141A
公开(公告)日：1999-01-19
申请号：US665131
申请日：1996-06-14
申请人： John Andrew Trotter
发明人： John Andrew Trotter
IPC分类号： H04L1/00 , H04J3/22
CPC分类号： H04L1/0002 , H04L1/0025
摘要： Disclosed is a variable bitrate radio modem unit that includes a transmit section and a receive section that are linked through a host computer. In the transmit section, the host computer is connected to a data modulator equipped with a variable bitrate data generator which in turn is connected to a radio transmit modem. In the receive section, a radio receive modem is connected to a clock/data recovery circuit which in turn is connected to an error detection and correction circuit. The error detection and correction circuit is then connected to the host computer. A connection is established at a predetermined bitrate between two host computers of two individual radio modem units. While data is being transmitted back and forth, the error rate of the data being received is determined by the error detection circuit. If the error rate is larger than a predetermined rate, the bitrate of the radio transmit modem of the transmitting unit is reduced. Conversely, if the error rate is smaller than a second predetermined rate, the bitrate of the radio transmit modem of the transmitting unit is increased.
摘要翻译：公开了一种可变比特率无线电调制解调器单元，其包括通过主计算机链接的发送部分和接收部分。在发送部分中，主计算机连接到配备有可变比特率数据发生器的数据调制器，该可变比特率数据发生器又连接到无线电发射调制解调器。在接收部分中，无线电接收调制解调器连接到时钟/数据恢复电路，时钟/数据恢复电路又连接到错误检测和校正电路。然后将错误检测和校正电路连接到主机。在两个单独的无线电调制解调器单元的两个主计算机之间以预定比特率建立连接。当数据来回传输时，接收到的数据的错误率由误差检测电路确定。如果错误率大于预定速率，则减少发送单元的无线电发送调制解调器的比特率。相反，如果错误率小于第二预定速率，则发送单元的无线电发送调制解调器的比特率增加。

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