公开(公告)号：US5844905A

公开(公告)日：1998-12-01

申请号：US677145

申请日：1996-07-09

申请人： Danny Neil McKay ,  Mahmoud Naghshineh ,  Claus Michael Olsen ,  Babak Rezvani ,  Parviz Kermani ,  Peter Dirk Hortensius

发明人： Danny Neil McKay ,  Mahmoud Naghshineh ,  Claus Michael Olsen ,  Babak Rezvani ,  Parviz Kermani ,  Peter Dirk Hortensius

IPC分类号： H04B7/26 ,  H04L12/28 ,  H04L12/413 ,  H04L12/56

CPC分类号： H04W74/0816 ,  H04L12/413

摘要： The throughput of a Request-to-Send and Clear-to-Send (RTS/CTS) based distributed media access control protocol is improved by reserving the medium in a hierarchical fashion. The shared medium is reserved for two stations called the participants. During the reserved period, a master (or primary) attribute and a slave (or secondary) attribute are given to the participants and the medium is shared between them using any suitable coordination algorithm. During the reserved time, the secondary can signal the primary station that it has data to send to the primary station and request that the primary and secondary roles or attributes be exchanged. In the case that a role exchange takes place, control of the medium is transferred from one station to another and data transfer in an opposite direction can take place without requiring another reservation. Observing stations which are not participating in the reservation can be invited to join the reservation as additional secondary stations if this does not cause any interference to any other existing reservations. The efficiency of the medium reservation may be improved also by piggy-backing any reservation specific signals onto data packets and by defining new response frames such as Hold-to-Send (HTS) and Free-to-Send (FTS) for flow control when there is a congested receiving station.

摘要翻译： 通过以分层方式保留介质，改进了基于请求发送和清除发送（RTS / CTS）的分布式媒体访问控制协议的吞吐量。 共享介质保留给两个称为参与者的站。 在保留期间，向参与者提供主（或主）属性和从属（或辅助）属性，并且使用任何合适的协调算法在它们之间共享介质。 在保留时间内，辅助信号可以向主站发信号通知主站具有要发送到主站的数据，并请求交换主要和次要角色或属性。 在发生角色交换的情况下，媒体的控制从一个站转移到另一个站，并且可以发生相反方向的数据传输，而不需要另外的预留。 如果不对任何其他现有保留造成任何干扰，可以邀请不参加保留的观察站作为附加的次级站加入预约。 媒体预约的效率也可以通过将任何预留特定信号捎带到数据分组上，并通过定义新的响应帧（例如保持发送（HTS）和自由发送（FTS））来进行流量控制） 有一个拥挤的接收站。

公开(公告)号：US06252854B1

公开(公告)日：2001-06-26

申请号：US08966914

申请日：1997-11-12

申请人： Peter Dirk Hortensius ,  Parviz Kermani ,  Babak Rezvani ,  Mahmoud Naghshineh ,  Claus Michael Olsen

发明人： Peter Dirk Hortensius ,  Parviz Kermani ,  Babak Rezvani ,  Mahmoud Naghshineh ,  Claus Michael Olsen

IPC分类号： G01R3108

CPC分类号： H04L1/08 ,  H04L2001/0098

摘要： Rate management in adaptive data rate wireless communication systems in which communicating stations move with respect to one another implements algorithms for calculation of the repetition rate. A rate management module is used for selecting a proper value of repetition rate to be communicated back to sending station and for a selecting proper value of repetition rate to encode the data at the sending station. The repetition rate calculation procedure enables each station to dynamically calculate the optimum rate with which each station should be receiving information from another station. The repetition rate calculation procedures take into consideration past and present measurements of the link quality, age of the link quality measurements, speed of change in the link quality, packet types, packet lengths, received signal strength, and pattern and correlation in the link quality measurements. The rate management module utilizes one or more tables which are accessible from either hardware or software.

摘要翻译： 其中通信站相对于彼此移动的自适应数据速率无线通信系统中的速率管理实现了重复率计算的算法。 速率管理模块用于选择要传送回发送站的重复率的适当值，以及选择适当的重复率值以对发送站进行数据编码。 重复率计算程序使得每个站能够动态地计算每个站应该从另一个站接收信息的最佳速率。 重复率计算过程考虑了链路质量的过去和现在的测量，链路质量测量的年龄，链路质量的变化速度，分组类型，分组长度，接收信号强度以及链路质量中的模式和相关性 测量。 速率管理模块利用可以从硬件或软件访问的一个或多个表。

公开(公告)号：US5818826A

公开(公告)日：1998-10-06

申请号：US664718

申请日：1996-06-17

申请人： Fritz Rudolf Gfeller ,  Peter Dirk Hortensius ,  Patrick K. Kam ,  Parviz Kermani ,  Danny N. McKay ,  Mahmoud Naghshineh ,  Claus Michael Olsen ,  Babak Rezvani

发明人： Fritz Rudolf Gfeller ,  Peter Dirk Hortensius ,  Patrick K. Kam ,  Parviz Kermani ,  Danny N. McKay ,  Mahmoud Naghshineh ,  Claus Michael Olsen ,  Babak Rezvani

IPC分类号： H04L1/00 ,  H04L1/08 ,  H04J3/22

CPC分类号： H04L1/08 ,  H04L2001/0098

摘要： In a wireless multi-rate communications system, a method for extending the range of communications in the system by dividing the physical layer frame into two portions: a robust header portion and a body, where the repetition rate of the data symbols in the header portion is greater than or equal to the repetition rate of the data symbols in the body of the frame. In this way the header can be received and decoded by all stations in the system with a high probability, while the body of the frame need only be received and decoded by the destination station to which the body of the frame is intended to be received and decoded.

摘要翻译： 在无线多速率通信系统中，通过将物理层帧划分为两部分来扩展系统中的通信范围的方法：强大的报头部分和主体，其中报头部分中的数据符号的重复率 大于或等于帧体内数据符号的重复率。 以这种方式，可以以高概率在系统中的所有站点接收和解码报头，而帧的主体仅需要被目标站点接收和解码，目的站站准备接收帧的主体， 解码。

公开(公告)号：US6118788A

公开(公告)日：2000-09-12

申请号：US950748

申请日：1997-10-15

申请人： Parviz Kermani ,  Babak Rezvani ,  Mahmoud Naghshineh ,  Claus Michael Olsen ,  Timucin Ozugur

发明人： Parviz Kermani ,  Babak Rezvani ,  Mahmoud Naghshineh ,  Claus Michael Olsen ,  Timucin Ozugur

IPC分类号： H04L12/56 ,  H04L12/43

CPC分类号： H04L12/5602

摘要： Fairness algorithms and access methods enable non-zero channel access for wireless communication systems operating in a random access channel environment. Fair access to a random access channel for each station in a wireless network is assured by each station calculating a priority or probability for accessing the channel based on logical connections among certain stations, based on other stations perception of the channel and based on each calculating station's own perception of the channel properties.

摘要翻译： 公平算法和访问方法使得在随机接入信道环境中操作的无线通信系统的非零信道接入。 通过每个站基于其他站对该信道的感知并基于每个计算站的等级来计算基于某些站之间的逻辑连接的信道的优先级或概率来确保对无线网络中的每个站的随机接入信道的公平接入 自己对渠道属性的看法。

公开(公告)号：US5661727A

公开(公告)日：1997-08-26

申请号：US662840

申请日：1996-06-12

申请人： Parviz Kermani ,  Danny N. McKay ,  Mahmoud Naghshineh ,  Frank Peter Novak ,  Babak Rezvani

发明人： Parviz Kermani ,  Danny N. McKay ,  Mahmoud Naghshineh ,  Frank Peter Novak ,  Babak Rezvani

IPC分类号： H04L12/28 ,  H04L12/413

CPC分类号： H04W48/18 ,  H04W24/00 ,  H04W74/0808

摘要： A method of delievering data in a wireless communications network using a combination of collision sensing and collision avoiidance protocols. More precisely, if there are no hidden nodes detected in the network, a collision sensing protocol is used; however, if there are hidden nodes, then a collision avoidance protocol is used. This invention also deals with methods of determining the presence or absence of hidden nodes.

摘要翻译： 一种使用碰撞感测和冲突解决协议的组合来在无线通信网络中进行数据交换的方法。 更准确地说，如果在网络中没有检测到隐藏节点，则使用碰撞感知协议; 然而，如果存在隐藏节点，则使用冲突避免协议。 本发明还涉及确定隐藏节点的存在或不存在的方法。

公开(公告)号：US06188496B1

公开(公告)日：2001-02-13

申请号：US08977873

申请日：1997-11-25

申请人： Arvind Krishna ,  Mahmoud Naghshineh ,  Claus Michael Olsen

发明人： Arvind Krishna ,  Mahmoud Naghshineh ,  Claus Michael Olsen

IPC分类号： H04B1002

CPC分类号： H04B10/1149

摘要： A repeater that has a receiver for receiving a signal. A validation module determines whether a signature is present in the received signal. An invalidation module determines whether undesired signal components are present in the received signal. The received signal is transmitted if the signature is present and if the undesired signal components are not present.

摘要翻译： 具有用于接收信号的接收器的中继器。 验证模块确定所接收信号中是否存在签名。 无效模块确定接收信号中是否存在不需要的信号分量。 如果签名存在并且不存在不期望的信号分量，则发送接收到的信号。

公开(公告)号：US06721805B1

公开(公告)日：2004-04-13

申请号：US09439951

申请日：1999-11-12

申请人： Pravin Bhagwat ,  Chatschik Bisdikian ,  Frank James Janniello ,  Ibrahim Korpeoglu ,  Mahmoud Naghshineh ,  Puneet Pandoh

发明人： Pravin Bhagwat ,  Chatschik Bisdikian ,  Frank James Janniello ,  Ibrahim Korpeoglu ,  Mahmoud Naghshineh ,  Puneet Pandoh

IPC分类号： G06F1516

CPC分类号： H04L69/32 ,  H04L69/08 ,  H04L69/323 ,  H04L69/324

摘要： The present invention provides shared communication medium capability to the plethora of computer devices, like the PCCAs, that normally are able to communicate with other devices via dedicated point-to-point links, e.g., via the practically universal RS-232 ports. It allows the sharing of the communication medium in a dynamic fashion depending on the instantaneous traffic demands by the various communicating devices. It further allows the emulation of point-to-point links over the shared communications medium in such a way that applications running on a PCCA use the shared medium transparently. Thus, this invention enables applications designed to operate over a point-to-point connection to operate over the shared medium without any modifications of the applications or the point-to-point devices. It enables the shared medium communications and dynamic communication resource allocation by using a device's I/O ports designed for point-to-point communications with dedicated communication resource allocation.

摘要翻译： 本发明为诸如通常能够通过专用点对点链路与其他设备通信的计算机设备（例如通过实际上通用的RS-232端口）通常提供共享的通信介质能力。 它允许根据各种通信设备的即时业务需求以动态方式共享通信介质。 它进一步允许在共享通信介质上仿真点对点链路，使得在PCCA上运行的应用使用共享媒体是透明的。 因此，本发明使得能够通过点对点连接进行操作的应用能够在共享介质上进行操作，而无需对应用或点对点设备进行任何修改。 它通过使用设计用于与专用通信资源分配进行点对点通信的设备的I / O端口来实现共享介质通信和动态通信资源分配。

公开(公告)号：US06651105B1

公开(公告)日：2003-11-18

申请号：US09439952

申请日：1999-11-12

申请人： Pravin Bhagwat ,  Chatschik Bisdikian ,  Ibrahim Korpeoglu ,  Mahmoud Naghshineh

发明人： Pravin Bhagwat ,  Chatschik Bisdikian ,  Ibrahim Korpeoglu ,  Mahmoud Naghshineh

IPC分类号： G06F1516

CPC分类号： H04L63/0428 ,  H04L29/06 ,  H04L63/08 ,  H04L67/14 ,  H04L69/08 ,  H04L69/16 ,  H04L69/168 ,  H04L69/32 ,  H04L69/323 ,  H04L69/324 ,  H04W80/04

摘要： The present invention provides a method, apparatus and computer product for a mobile device to roam securely and seamlessly from one access point to another access point without disrupting an active PPP connection. The method includes establishing, maintaining, and terminating a PPP connection between a mobile device and a PPP server via an access point, wherein the mobile device is equipped with a serial asynchronous communication interface. The PPP server is attached to a packet switched data network, and the access point is acting as a bridge between the serial communication interface and the packet switched communication interface. Also provided is a method to emulate a direct RS-232 cable connection between a mobile device and another computer located several hops away from the mobile device. It provides a method of keeping the RS-232 cable emulation between the mobile device an another computer system intact despite changes in mobile device's location in the network. It also provides a method of exchanging cookies between peers at the PPP connection establishment time and using them for fast reauthentication. This is a secure method of switching from one PPP proxy to another PPP proxy without disrupting the end to end PPP connection.

摘要翻译： 本发明提供一种用于移动设备从一个接入点到另一个接入点安全无缝地漫游而不中断活跃的PPP连接的方法，设备和计算机产品。 该方法包括通过接入点建立，维护和终止移动设备和PPP服务器之间的PPP连接，其中移动设备配备有串行异步通信接口。 PPP服务器连接到分组交换数据网络，接入点作为串行通信接口和分组交换通信接口之间的桥梁。 还提供了一种模拟移动设备与位于离移动设备几跳的另一计算机之间的直接RS-232电缆连接的方法。 它提供了一种将移动设备之间的RS-232电缆仿真保持在另一计算机系统的方法，尽管移动设备在网络中的位置发生变化。 它还提供了一种在PPP连接建立时间间在对等体之间交换cookie的方法，并使用它们进行快速重新认证。 这是一种从一个PPP代理切换到另一个PPP代理的安全方法，而不会中断PPP端连接。

公开(公告)号：US5533026A

公开(公告)日：1996-07-02

申请号：US398717

申请日：1995-03-06

申请人： Hamid Ahmadi ,  Frederic J. Bauchot ,  Roselyne Bonnet ,  Ilan Kessler ,  Arvind Krishna ,  Fabien P. Lanne ,  Mahmoud Naghshineh ,  Catherine Solar ,  Michelle M. Wetterwald

发明人： Hamid Ahmadi ,  Frederic J. Bauchot ,  Roselyne Bonnet ,  Ilan Kessler ,  Arvind Krishna ,  Fabien P. Lanne ,  Mahmoud Naghshineh ,  Catherine Solar ,  Michelle M. Wetterwald

IPC分类号： G06F13/00 ,  H04B7/26 ,  H04L12/56 ,  H04L29/06 ,  H04L29/12 ,  H04W8/26 ,  H04W40/24 ,  H04W40/26 ,  H04W40/36 ,  H04W80/04 ,  H04W92/02 ,  H04B7/24

CPC分类号： H04W92/02 ,  H04L45/02 ,  H04L29/12009 ,  H04L61/00 ,  H04W40/248 ,  H04W40/26 ,  H04W40/36 ,  H04W8/26 ,  H04W80/04

摘要： A communications network having a number of routers, a number of base stations and a number of mobile units maintains communications with the mobile units by assigning a unique address known to the routing entities of the network to each mobile unit. By including the mobile units unique address in topology updates of the network, the location of the mobile unit at any time is made known to all routers of the network. That is, once a mobile unit moves into a domain of a new access point and establishes a new link with the new access point, it uses the topology update mechanism of the network to make its new location known to all routers. Once a router of the network receives topology update information specific to the mobile unit's new location, it updates its routing table such that packets destined to the mobile unit are routed in a path which terminates at the mobile unit and contains its new access point.

摘要翻译： 具有多个路由器，多个基站和多个移动单元的通信网络通过向每个移动单元分配网络的路由实体已知的唯一地址来维护与移动单元的通信。 通过将移动单元的唯一地址包括在网络的拓扑更新中，移动单元在任何时间的位置对于网络的所有路由器都是已知的。 也就是说，一旦移动单元移动到新的接入点的域中并与新的接入点建立新的链路，则它使用网络的拓扑更新机制来使其新的位置被所有路由器都知道。 一旦网络的路由器接收到特定于移动单元的新位置的拓扑更新信息，则它更新其路由表，使得去往移动单元的分组在终止于移动单元的路径中路由并且包含其新的接入点。

公开(公告)号：US5487065A

公开(公告)日：1996-01-23

申请号：US206443

申请日：1994-03-04

申请人： Anthony S. Acampora ,  Mahmoud Naghshineh

发明人： Anthony S. Acampora ,  Mahmoud Naghshineh

IPC分类号： H04Q3/00 ,  H04L12/56 ,  H04Q11/04 ,  H04W36/08 ,  H04W36/12 ,  H04W76/04 ,  H04L12/66 ,  H04B7/26

CPC分类号： H04W76/04 ,  H04L49/3081 ,  H04Q11/0478 ,  H04W36/12 ,  H04L2012/5607 ,  H04L2012/5619 ,  H04W36/08

摘要： Distributed call setup and rerouting are realized in a mobile-communications network. A connection tree is set up within the network, e.g., upon a mobile user accessing a base station. The connection tree comprises communication routes from a fixed point in the network, the root of the tree, to each base station within a vicinity of the base station accessed by the mobile user. When the mobile user moves from one cell to another within the connection tree, the call is rerouted to another route within the connection tree.

摘要翻译： 在移动通信网络中实现分布式呼叫建立和重新路由。 在网络内建立连接树，例如在移动用户访问基站时。 连接树包括从网络中的固定点（树的根）到由移动用户访问的基站附近的每个基站的通信路由。 当移动用户在连接树中从一个小区移动到另一个小区时，呼叫将重新路由到连接树中的另一个路由。