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1. 发明授权

US07471621B2 Method and apparatus for dynamic adjustment of orthogonal frequency-division multiplexing during congested conditions 有权
标题翻译：在拥塞条件下正交频分复用的动态调整方法和装置
公开(公告)号：US07471621B2
公开(公告)日：2008-12-30
申请号：US11399630
申请日：2006-04-06
申请人： David T. Chen , Kadathur S. Natarajan , Ivan N. Vukovic
发明人： David T. Chen , Kadathur S. Natarajan , Ivan N. Vukovic
IPC分类号： H04J11/00
CPC分类号： H04W16/10 , H04W72/0426
摘要： A base station has a transmission element to wirelessly transmit at least one data frame. The at least one data frame has a predetermined uplink allocation and a predetermined downlink allocation. A detection element detects a congestion condition. When the congestion condition is detected, the transmission element transmits a request to at least one neighboring base station for an expansion of the predetermined uplink allocation or the predetermined downlink allocation. A reception element receives a signal from the at least one neighboring base station. A processing element expand the one of the predetermined uplink allocation or the predetermined downlink allocation by a specified amount in response to the signal indicating the specified amount for a mutually agreed time, or number of symbols or frames.
摘要翻译：基站具有无线发送至少一个数据帧的传输元件。所述至少一个数据帧具有预定的上行链路分配和预定的下行链路分配。检测元件检测到拥塞状况。当检测到拥塞状况时，传输单元向至少一个相邻基站发送用于扩展预定上行链路分配或预定下行链路分配的请求。接收元件从至少一个相邻基站接收信号。响应于表示相互同意的时间或符号或帧数的指定量的信号，处理元件将预定上行链路分配或预定下行链路分配中的一个扩展指定量。

2. 发明授权

US08509788B2 Dynamic sharing of wireless resources among different communication networks 有权
标题翻译：不同通信网络之间无线资源的动态共享
公开(公告)号：US08509788B2
公开(公告)日：2013-08-13
申请号：US11683719
申请日：2007-03-08
申请人： Kadathur S. Natarajan , Daniel J. Coombes , William A Payne, III
发明人： Kadathur S. Natarajan , Daniel J. Coombes , William A Payne, III
IPC分类号： H04W40/00 , H04W72/00 , H04W74/00 , H04B7/00
CPC分类号： H04W16/14 , H04L47/11 , H04L47/14
摘要： Various embodiments are described to enable multiple, independent communication networks to share in an autonomous and dynamic manner unlicensed wireless resources. Generally, this involves determining that a first network node (122) is using at least a portion of a wireless resource to provide network service to at least one remote unit (102). A second network node (123), under the control of a different network operator than the first node and desiring to use the wireless resource, sends the first network node, a request to relinquish use of at least a portion of the wireless resource. The second network node sends this request wirelessly, perhaps using the wireless resource itself. If the first network node grants the request, the second node may then begin using at least a portion of the relinquished resource to provide network service.
摘要翻译：描述了各种实施例以使得多个独立的通信网络以自主和动态方式共享非授权无线资源。通常，这涉及确定第一网络节点（122）正在使用无线资源的至少一部分来向至少一个远程单元（102）提供网络服务。第二网络节点（123）在与第一节点不同的网络运营商的控制下并且希望使用无线资源的情况下，发送第一网络节点，放弃使用无线资源的至少一部分的请求。第二个网络节点可以无线地发送此请求，也许使用无线资源本身。如果第一网络节点授权请求，则第二节点可以开始使用放弃资源的至少一部分来提供网络服务。

3. 发明授权

US6157632A Low complexity protocol method device and system robust in the presence of bursted 失效
标题翻译：低复杂度的协议方法设备和系统在存在突发干扰的情况下鲁棒
公开(公告)号：US6157632A
公开(公告)日：2000-12-05
申请号：US893332
申请日：1997-07-16
申请人： Mark C. Cudak , James R. Kelton , Phillip D. Rasky , Bruce D. Mueller , Kadathur S. Natarajan
发明人： Mark C. Cudak , James R. Kelton , Phillip D. Rasky , Bruce D. Mueller , Kadathur S. Natarajan
IPC分类号： H04L1/18 , H04L12/56 , H04J3/00 , H04B7/212
CPC分类号： H04W28/06 , H04L1/1809 , H04L1/1887 , H04W16/14
摘要： The present invention provides a method/protocol (400, 800) and device (600; 700) for transmitting a synchronous stream of information, in a wireless, centrally controlled communication system. The method includes the steps of parsing the synchronous stream of information into a plurality of predetermined fixed sized blocks and transmitting/retransmitting each fixed size block in a predetermined window of time until one of: reception of each fixed size block is positively acknowledged and each corresponding predetermined window of time has elapsed.
摘要翻译：本发明提供了一种用于在无线中央控制的通信系统中发送同步信息流的方法/协议（400,800）和设备（600; 700）。该方法包括以下步骤：将信息的同步流解析成多个预定的固定大小的块，并在预定的时间窗口中发送/重传每个固定大小的块，直到每个固定大小块的接收被肯定地确认，并且每个对应预定的时间窗已经过去了。

4. 发明授权

US5608721A Communications network and method which implement diversified routing 失效
标题翻译：实现多元化路由的通信网络和方法
公开(公告)号：US5608721A
公开(公告)日：1997-03-04
申请号：US415800
申请日：1995-04-03
申请人： Kadathur S. Natarajan , Katta G. Murty
发明人： Kadathur S. Natarajan , Katta G. Murty
IPC分类号： H04Q3/66 , H04Q11/04
CPC分类号： H04Q3/66
摘要： A communications network (20) includes any number of moving switching nodes (30) and a route-determining node (28). The route-determining node (28) performs an off-line procedure (58) to define a-priori routing for the entire network. This procedure (58) is performed repetitively to track switching node (30) movement and to define routing for numerous epochs included in a planning period. The procedure (58) includes a process (86) for determining all shortest path routes between all possible origination and destination switching nodes (30). Another process (84) matches predicted call traffic for a subject epoch with the shortest path routes. Another process (88) generates routing code tables (54) in response to the predicted call traffic matched to shortest path routes. This process (88) assigns logical routing IDs (52) to physically distinct, shortest path routes in proportion to the predicted call traffic allocated to the distinct routes.
摘要翻译：通信网络（20）包括任何数量的移动交换节点（30）和路线确定节点（28）。路由确定节点（28）执行离线过程（58）以定义整个网络的先验路由。重复地执行该过程（58）以跟踪切换节点（30）移动，并且定义包括在规划周期中的多个历元的路由。过程（58）包括用于确定所有可能的发起和目的地交换节点（30）之间的所有最短路径路由的过程（86）。另一个过程（84）将主体时期的预测呼叫业务与最短路径路由进行匹配。响应于与最短路径路由匹配的预测呼叫业务，另一进程（88）生成路由代码表（54）。该过程（88）将逻辑路由ID（52）分配给与分配给不同路由的预测呼叫流量成比例的物理上不同的最短路径路由。

5. 发明授权

US5228115A Hybrid backtrack/lookahead search technique for constraint-satisfaction problems 失效
标题翻译：用于约束满足问题的混合回溯/前瞻搜索技术
公开(公告)号：US5228115A
公开(公告)日：1993-07-13
申请号：US835010
申请日：1992-02-12
申请人： Kadathur S. Natarajan
发明人： Kadathur S. Natarajan
IPC分类号： G06Q10/04
CPC分类号： G06Q10/04
摘要： A method of solving a constraint-satisfaction problem with a data processor includes the steps of (a) providing a search tree structure (10) representing a plurality (N) of variables (X), the search tree structure having a plurality of levels; (b) searching (L) shallow levels of the search tree structure by employing a backtrack search method wherein (L) is less than or equal to a specified value H; and (c) searching (M) remaining, deeper, levels of the search tree structure by employing a lookahead search method. The step of searching (L) shallow levels of the search tree structure includes a step of binding a set of X.sub.1 through X.sub.H variables each to an element from its domain such that no constraints are violated. The step of searching (M) remaining, deeper, levels of the search tree structure includes the steps of, given the bindings for the set of variables X.sub.1 through X.sub.H, determining for each variable X.sub.i, H
摘要翻译：一种解决数据处理器的约束满足问题的方法包括以下步骤：（a）提供表示多个（N）个变量（X）的搜索树结构（10），所述搜索树结构具有多个级别; （b）通过采用其中（L）小于或等于指定值H的回溯搜索方法来搜索（L）搜索树结构的浅层级; 和（c）通过采用前瞻搜索方法搜索（M）搜索树结构的剩余，更深层次。搜索（L）搜索树结构的浅层级的步骤包括将一组X1到XH变量各自绑定到来自其域的元素的步骤，使得不会违反约束。搜索（M）搜索树结构的剩余，更深层次的步骤包括以下步骤：给定该组变量X1至XH的绑定，确定每个变量Xi，H

6. 发明授权

US07848241B2 Method and apparatus for handoff control in mobile communications systems 有权
标题翻译：移动通信系统中切换控制的方法和装置
公开(公告)号：US07848241B2
公开(公告)日：2010-12-07
申请号：US11343491
申请日：2006-01-31
申请人： Kadathur S. Natarajan , Dragan M. Boscovic , Gerald J. Gutowski
发明人： Kadathur S. Natarajan , Dragan M. Boscovic , Gerald J. Gutowski
IPC分类号： G01R31/08 , H04W4/00 , H04W36/00
CPC分类号： H04W36/22 , H04W36/0083 , H04W92/20
摘要： A mobile communications system includes a first base station to service a first set of connections from a first set of mobile communications devices to a communications network. A set of neighboring base stations is in communication with the first base station. In an embodiment of the invention, the first base station prioritizes the first set of connections according to first predetermined criteria and prioritizes the set of neighboring base stations according to second predetermined criteria. The prioritization lists are used in deterministic ways to alleviate potential congestion in backhaul links and optimize the overall performance of system and improved quality of service.
摘要翻译：移动通信系统包括第一基站，用于从第一组移动通信设备到通信网络服务第一组连接。一组相邻基站与第一基站通信。在本发明的实施例中，第一基站根据第一预定标准对第一组连接进行优先级排序，并根据第二预定标准对相邻基站组进行优先级排序。优先级列表以确定性方式用于减轻回程链路中的潜在拥塞，并优化系统的整体性能和提高服务质量。

7. 发明授权

US07623493B2 Method and apparatus for link layer assisted handoff 有权
标题翻译：链路层辅助切换的方法和装置
公开(公告)号：US07623493B2
公开(公告)日：2009-11-24
申请号：US11353716
申请日：2006-02-13
申请人： Kamel A. Baba , Mohammed D. Ali , Kadathur S. Natarajan
发明人： Kamel A. Baba , Mohammed D. Ali , Kadathur S. Natarajan
IPC分类号： H04W4/00
CPC分类号： H04W36/0011 , H04W36/0016 , H04W76/20 , H04W80/02 , H04W80/04 , H04W80/12
摘要： Various embodiments are described to address the need for an apparatus and method that improves upon known handoff techniques, such as Mobile IP and Fast Mobile IP, to improve the mobility experience of an end user. OSI layer 2-originated indications of a handoff being imminent (301, 501, 502), a link down for handoff (307, 509, 510), and a new link up after handoff (309, 511, 512) are introduced. These indications can be used by applications (such as real-time/streaming applications on the mobile (101)) to take suitable proactive measures prior to an actual handoff. Examples of such measures include the buffering of data to be used during the handoff interval in a way that improves the seamless mobility experience of the end user.
摘要翻译：描述了各种实施例以解决对改进已知的切换技术（诸如移动IP和快速移动IP）的装置和方法的需求，以改善最终用户的移动体验。介绍OSI第2层起始的即将发生的切换指示（301,501,502），切换链路（307,509,510）以及切换后的新链路（309,511,512）。应用程序可以使用这些指示（例如移动（101）上的实时/流式传输应用程序），以便在实际切换之前采取适当的主动措施。这种措施的示例包括缓冲在切换间隔期间使用的数据，以改善最终用户的无缝移动体验。

8. 发明授权

US06993335B2 Apparatus and method for mobile/IP handoff between a plurality of access technologies 有权
标题翻译：用于多个接入技术之间的移动/ IP切换的装置和方法
公开(公告)号：US06993335B2
公开(公告)日：2006-01-31
申请号：US10295187
申请日：2002-11-15
申请人： Kadathur S. Natarajan , Karthikeyan Arumugam , Muddasani S. Reddy , Mary M. Valdivia , Ajoy K. Singh
发明人： Kadathur S. Natarajan , Karthikeyan Arumugam , Muddasani S. Reddy , Mary M. Valdivia , Ajoy K. Singh
IPC分类号： H04Q7/20
CPC分类号： H04W36/30 , H04W8/06 , H04W8/085 , H04W36/0011 , H04W36/14 , H04W36/36 , H04W80/04 , H04W88/06 , H04W92/02
摘要： An apparatus and method for performing Mobile/IP handoff between different access technologies. Associated with each access technology are two thresholds, a Low Water Mark and a High Water Mark. The method uses these water marks to its access technology selection in a particular environment. Using the method, a mobile node 102 remains on its preferred network when the signal strength on the preferred network (interface) is above the low water mark. When the signal strength on the preferred network drops below the high water mark, the method calculates the low water mark for the network. When the signal strength on the preferred network drops below the low water mark (LWM), the method initiates handoff to the next available network that meets certain conditions. The method initiates handoff back to the preferred network when the signal strength measurement on the preferred network is again above the high water mark.
摘要翻译：用于在不同接入技术之间执行移动/ IP切换的装置和方法。与每种接入技术相关的是两个阈值，即低水位标记和高水位标记。该方法在特定环境中使用这些水印进行访问技术选择。使用该方法，当优选网络（接口）上的信号强度高于低水位标记时，移动节点102保留在其优选网络上。当优选网络的信号强度低于高水位时，该方法计算网络的低水位。当优选网络的信号强度低于低水位（LWM）时，该方法启动到满足某些条件的下一个可用网络的切换。当优选网络上的信号强度测量再次高于高水位时，该方法启动切换回优选网络。

9. 发明授权

US5581543A Communication network and method which respond to a failed link 失效
标题翻译：响应故障链路的通信网络和方法
公开(公告)号：US5581543A
公开(公告)日：1996-12-03
申请号：US395229
申请日：1995-02-27
申请人： Kadathur S. Natarajan
发明人： Kadathur S. Natarajan
IPC分类号： H04B1/74 , H04L12/56 , H04Q3/66 , H04J3/14
CPC分类号： H04Q3/665 , H04B1/745 , H04L45/00 , H04L45/28 , H04L45/48
摘要： A communications network (20) includes a constellation (30) of any number of moving switching nodes and a route-determining node (28). The route-determining node (28) performs an off-line procedure (58) to define a-priori routing for the entire network for a planning period. When a link (40) fails, the switching nodes (30) terminating the link (40) implement an interim rerouting procedure (78). The route-determining node (28) then operates in a failure response mode to quickly devise updated routing definitions. In the failure response mode route trees (110) which include the failed link (40') are identified. Shortest path routes for nodes (30) isolated by the link failure are revised to omit the failed link (40'). Shortest path routes for non-isolated nodes (30) and in route trees which do not include the failed link are not changed.
摘要翻译：通信网络（20）包括任意数量的移动交换节点的星座（30）和路由决定节点（28）。路由确定节点（28）执行离线过程（58）以在规划周期内为整个网络定义先验路由。当链路（40）发生故障时，终止链路（40）的交换节点（30）实现临时重路由过程（78）。然后，路由确定节点（28）以故障响应模式操作，以快速设计更新的路由定义。在故障响应模式中，识别包括故障链路（40'）的路由树（110）。通过链路故障隔离的节点（30）的最短路径路径被修改以省略故障链路（40'）。非隔离节点（30）和不包括故障链路的路由树中的最短路径路由不会改变。

10. 发明授权

US5551058A Method and system for intelligent cell selection using location data in cellular systems 失效
标题翻译：使用蜂窝系统中的位置数据进行智能小区选择的方法和系统
公开(公告)号：US5551058A
公开(公告)日：1996-08-27
申请号：US331463
申请日：1994-10-31
申请人： Jonathan E. Hutcheson , Kadathur S. Natarajan , Raymond J. Leopold
发明人： Jonathan E. Hutcheson , Kadathur S. Natarajan , Raymond J. Leopold
IPC分类号： H04B7/185 , H04B7/26 , H04W64/00 , H04Q7/00
CPC分类号： H04W64/00 , H04B7/18541 , H04B7/1855
摘要： A cellular communication system projects multiple cells throughout a user area. Subscriber units (24) encounter multiple cells as they roam through the user area or as the cells migrate past the subscriber unit (24). When a subscriber unit (24) encounters the fringe area of a cell it must select and transition to a target cell to maintain contact with the system. The subscriber unit (24) performs an analysis of the location, proximity, and expected duration of exposure of candidate target cells using location data transmitted by control channels located in the candidate cells. The subscriber unit (24) then selects a target cell based on these factors.
摘要翻译：蜂窝通信系统在整个用户区域中投射多个小区。订户单元（24）在漫游用户区域或者小区迁移通过用户单元（24）时遇到多个小区。当用户单元（24）遇到小区的边缘区域时，它必须选择并转移到目标小区以保持与系统的接触。用户单元（24）使用位于候选小区中的控制信道发送的位置数据来执行候选目标小区的曝光的位置，接近度和期望持续时间的分析。然后，用户单元（24）基于这些因素选择目标小区。

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