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1. 发明授权

US5953339A Logical link connection server 失效
标题翻译：逻辑链路连接服务器
公开(公告)号：US5953339A
公开(公告)日：1999-09-14
申请号：US839475
申请日：1997-04-14
申请人： John Henry Baldwin , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Wassim A. Matragi , Sanjiv Nanda
发明人： John Henry Baldwin , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Wassim A. Matragi , Sanjiv Nanda
IPC分类号： H04Q3/00 , H04L12/56 , H04Q7/38 , H04Q11/04 , G01R31/08 , G06F11/00 , H04J3/16
CPC分类号： H04L49/253 , H04L49/105 , H04L49/20 , H04Q11/0478 , H04L2012/5607 , H04L2012/561 , H04L2012/5615 , H04L2012/5656 , H04L49/3009 , H04L49/55
摘要： A digital cellular/personal communications service (PCS) application incorporates a logical link connection (LLC) server. In this approach, there are two ATM connections in the path of an AAL-2 connection: one between a base station and the LLC Server and the other between the LLC Server and a vocoder group. All LLCs from, or to, a given base station use a common ATM connection irrespective of the vocoder used at the other end. Similarly, all LLCs from, or to, a given vocoder group use a common ATM connection irrespective of the destination base station at the other end. At the LLC Server, LLC packets from many base stations destined for the same vocoder group are extracted and bundled into the ATM connection between the LLC Server and the destination vocoder group. Similar treatment is given to the packets originating at vocoders and destined for base stations. Thus, each ATM connection between a particular base station and the LLC server and each ATM connection between the LLC Server and a particular vocoder group are used to maximum capacity notwithstanding each ATM connection conveys LLCs to different LLC endpoints.
摘要翻译：数字蜂窝/个人通信服务（PCS）应用包括逻辑链路连接（LLC）服务器。在这种方法中，在AAL-2连接的路径中有两个ATM连接：一个在基站和LLC服务器之间，另一个在LLC服务器和声码器组之间。来自或给予基站的所有LLC使用公共ATM连接，而与另一端使用的声码器无关。类似地，来自或给定的声码器组的所有LLC使用公共ATM连接，而不管另一端的目的地基站如何。在LLC服务器上，来自许多同一声码器组的基站的LLC分组被提取并捆绑到LLC服务器和目的地声码器组之间的ATM连接中。对来自声码器并发往基站的分组进行类似的处理。因此，尽管每个ATM连接将LLC传送到不同的LLC端点，但特定基站和LLC服务器之间的每个ATM连接以及LLC服务器和特定声码器组之间的每个ATM连接被用于最大容量。

2. 发明授权

US5936967A Multi-channel broadband adaptation processing 失效
标题翻译：多通道宽带适配处理
公开(公告)号：US5936967A
公开(公告)日：1999-08-10
申请号：US757208
申请日：1996-11-27
申请人： John H. Baldwin , Behram Homi Bharucha , Bharat Tarachand Doshi , Subrahmanyam Dravida , Sanjiv Nanda
发明人： John H. Baldwin , Behram Homi Bharucha , Bharat Tarachand Doshi , Subrahmanyam Dravida , Sanjiv Nanda
IPC分类号： H04L12/56 , H04Q3/00 , H04Q7/24 , H04Q11/04 , H04J3/16
CPC分类号： H04Q11/0478 , H04L2012/5607 , H04L2012/5652 , H04L2012/5672
摘要： A method and apparatus for transmitting and/or receiving variable-length packets (e.g., CDMA packets, CDPD packets) that are associated with different channels and which are multiplexed via a single virtual circuit (e.g., an ATM virtual circuit).
摘要翻译：用于发送和/或接收与不同信道相关联并且经由单个虚拟电路（例如，ATM虚拟电路）复用的可变长度分组（例如，CDMA分组，CDPD分组）的方法和装置。

3. 发明授权

US5729536A Cellular system architectures supporting data services 失效
标题翻译：支持数据服务的蜂窝系统架构
公开(公告)号：US5729536A
公开(公告)日：1998-03-17
申请号：US630147
申请日：1996-04-10
申请人： Bharat Tarachand Doshi , Subrahmanyam Dravida , Richard Paul Ejzak , Sanjiv Nanda , Anil Sawkar , Philip Andrew Treventi
发明人： Bharat Tarachand Doshi , Subrahmanyam Dravida , Richard Paul Ejzak , Sanjiv Nanda , Anil Sawkar , Philip Andrew Treventi
IPC分类号： H04W84/02 , H04J3/00 , H04M3/00 , H04Q3/00 , H04Q11/04 , H04W88/18 , H04Q7/28
CPC分类号： H04W88/181 , H04L49/255 , H04L49/3081 , H04Q11/0478 , H04L2012/5607 , H04L2012/5619 , H04L2012/5639
摘要： Four stages of digital cellular architecture are presented which reuse much of the existing voice infrastructure while allowing graceful introduction of data and integrated voice/data services over industry standard, low cost platforms. First, a separate ATM-based infrastructure is introduced that supports data services. A new data call control is introduced on industry standard hardware platforms using object oriented and modular programming. Second, ATM is introduced at radio ports and call control functions are migrated to the new ATM-based call control platforms. Third, vocoders are introduced at the DCS. Fourth, the cellular functions of the legacy cellular switch are phased out and replaced by the ATM-based target architecture.
摘要翻译：提出了四个阶段的数字蜂窝架构，其重用了大量现有的语音基础设施，同时允许在行业标准，低成本平台上优雅地引入数据和集成语音/数据服务。首先，引入了支持数据服务的单独的基于ATM的基础设施。在面向对象和模块化编程的行业标准硬件平台上引入了新的数据呼叫控制。第二，在无线端口引入ATM，呼叫控制功能迁移到新的基于ATM的呼叫控制平台。第三，在DCS中引入声码器。第四，传统蜂窝交换机的蜂窝功能被淘汰，并被基于ATM的目标架构所取代。

4. 发明授权

US07502361B2 Subnetwork layer for a multimedia mobile network 有权
标题翻译：多媒体移动网络的子网层
公开(公告)号：US07502361B2
公开(公告)日：2009-03-10
申请号：US10345034
申请日：2003-01-15
申请人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
发明人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
IPC分类号： H04J3/24
CPC分类号： H04L29/12311 , H04L1/1664 , H04L1/1812 , H04L61/2084 , H04L67/322 , H04L69/324 , H04L69/325 , H04L69/329 , H04L69/40 , H04W74/00 , H04W80/00
摘要： A new protocol layer is provided as part of a protocol stack associated with a packet-based multiaccess mobile communications system. The protocol layer is preferably located above a medium access control (MAC) protocol layer and a physical protocol layer of the system and below a transport/network protocol layer. Such a subnetwork protocol layer provides, inter alia, the communications system with various mobility management functions, for example, tracking mobile user stations throughout the system, mobile station access to the system, and connection/call continuity within the system. The subnetwork protocol layer of the invention also performs packet routing functions associated with the system. Routing can be accomplished in many ways, for example, via source routing, connectionless routing, or tunneling. Further, the new protocol layer of the invention is preferably located above a data link layer with respect to the protocol stack associated with communications between network nodes.
摘要翻译：作为与基于分组的多访问移动通信系统相关联的协议栈的一部分提供了新的协议层。协议层优选地位于媒体访问控制（MAC）协议层和系统的物理协议层之上，并位于传输/网络协议层之下。这样的子网协议层尤其提供具有各种移动性管理功能的通信系统，例如，跟踪整个系统中的移动用户站，移动台对系统的访问以及系统内的连接/呼叫连续性。本发明的子网协议层还执行与系统相关联的分组路由功能。可以通过许多方式实现路由，例如，通过源路由，无连接路由或隧道。此外，本发明的新协议层优选地相对于与网络节点之间的通信相关联的协议栈位于数据链路层之上。

5. 发明授权

US6160804A Mobility management for a multimedia mobile network 有权
标题翻译：多媒体移动网络的移动管理
公开(公告)号：US6160804A
公开(公告)日：2000-12-12
申请号：US191134
申请日：1998-11-13
申请人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
发明人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
IPC分类号： H04L12/56 , H04L29/06 , H04L29/12 , H04J3/24 , H04L12/28
CPC分类号： H04W8/082 , H04L29/12009 , H04L29/12047 , H04L29/12801 , H04L61/15 , H04L61/6004 , H04L69/16 , H04L69/161 , H04L69/164 , H04W80/04
摘要： Various methodologies and related apparatus associated with mobility management issues within a packet-based multiaccess mobile communications system, which includes a plurality of mobile user stations and a plurality of network nodes, are provided. Location management techniques include tracking and/or locating mobile stations within the system. The invention makes use of home and visiting location registers in which information such as mobile station addresses and/or host names associated with mobile stations are stored. Mobile access methodologies include a complete mobile access method and a direct mobile access method. The former allows a mobile station to preferably include a unique address in the packets being transmitted, while the latter allows the station to merely use the host name of the destination station. The invention also includes various in-call mobility management techniques, including handoffs, which make use of the concept of an anchor.
摘要翻译：提供了包括多个移动用户站和多个网络节点的基于分组的多接入移动通信系统内与移动性管理问题相关联的各种方法和相关设备。位置管理技术包括跟踪和/或定位系统内的移动台。本发明利用存储与移动台相关联的诸如移动站地址和/或主机名称的信息的归属和访问位置寄存器。移动接入方法包括完整的移动接入方法和直接移动接入方法。前者允许移动台优选地在正被发送的分组中包括唯一的地址，而后者允许站仅使用目的站的主机名。本发明还包括使用锚的概念的各种呼叫移动性管理技术，包括切换。

6. 发明授权

US06747961B1 Mobility management for a multimedia mobile network 有权
标题翻译：多媒体移动网络的移动管理
公开(公告)号：US06747961B1
公开(公告)日：2004-06-08
申请号：US09547262
申请日：2000-04-11
申请人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
发明人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
IPC分类号： H04Q700
CPC分类号： H04W8/082 , H04L29/12009 , H04L29/12047 , H04L29/12801 , H04L61/15 , H04L61/6004 , H04L69/16 , H04L69/161 , H04L69/164 , H04W80/04
摘要： Various methodologies and related apparatus associated with mobility management issues within a packet-based multiaccess mobile communications system, which includes a plurality of mobile user stations and a plurality of network nodes, are provided. Location management techniques include tracking and/or locating mobile stations within the system. The invention makes use of home and visiting location registers in which information such as mobile station addresses and/or host names associated with mobile stations are stored. Mobile access methodologies include a complete mobile access method and a direct mobile access method. The former allows a mobile station to preferably include a unique address in the packets being transmitted, while the latter allows the station to merely use the host name of the destination station. The invention also includes various in-call mobility management techniques, including handoffs, which make use of the concept of an anchor.
摘要翻译：提供了包括多个移动用户站和多个网络节点的基于分组的多接入移动通信系统内与移动性管理问题相关联的各种方法和相关设备。位置管理技术包括跟踪和/或定位系统内的移动台。本发明利用存储与移动台相关联的诸如移动站地址和/或主机名称的信息的归属和访问位置寄存器。移动接入方法包括完整的移动接入方法和直接移动接入方法。前者允许移动台优选地在正被发送的分组中包括唯一的地址，而后者允许站仅使用目的站的主机名。本发明还包括使用锚的概念的各种呼叫移动性管理技术，包括切换。

7. 发明授权

US06256300B1 Mobility management for a multimedia mobile network 有权
标题翻译：多媒体移动网络的移动管理
公开(公告)号：US06256300B1
公开(公告)日：2001-07-03
申请号：US09547263
申请日：2000-04-11
申请人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
发明人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
IPC分类号： H04Q700
CPC分类号： H04W8/082 , H04L29/12009 , H04L29/12047 , H04L29/12801 , H04L61/15 , H04L61/6004 , H04L69/16 , H04L69/161 , H04L69/164 , H04W80/04
摘要： Various methodologies and related apparatus associated with mobility management issues within a packet-based multiaccess mobile communications system, which includes a plurality of mobile user stations and a plurality of network nodes, are provided. Location management techniques include tracking and/or locating mobile stations within the system. The invention makes use of home and visiting location registers in which information such as mobile station addresses and/or host names associated with mobile stations are stored. Mobile access methodologies include a complete mobile access method and a direct mobile access method. The former allows a mobile station to preferably include a unique address in the packets being transmitted, while the latter allows the station to merely use the host name of the destination station. The invention also includes various in-call mobility management techniques, including handoffs, which make use of the concept of an anchor.
摘要翻译：提供了包括多个移动用户站和多个网络节点的基于分组的多接入移动通信系统内与移动性管理问题相关联的各种方法和相关设备。位置管理技术包括跟踪和/或定位系统内的移动台。本发明利用存储与移动台相关联的诸如移动站地址和/或主机名称的信息的归属和访问位置寄存器。移动接入方法包括完整的移动接入方法和直接移动接入方法。前者允许移动台优选地在正被发送的分组中包括唯一的地址，而后者允许站仅使用目的站的主机名。本发明还包括使用锚的概念的各种呼叫移动性管理技术，包括切换。

8. 发明授权

US06947398B1 Addressing scheme for a multimedia mobile network 有权
标题翻译：多媒体移动网络的寻址方案
公开(公告)号：US06947398B1
公开(公告)日：2005-09-20
申请号：US09191132
申请日：1998-11-13
申请人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
发明人： Walid Ahmed , Bharat Tarachand Doshi , Subrahmanyam Dravida , Hong Jiang , Kiran M. Rege
IPC分类号： H04W8/04 , H04W8/26 , H04W80/04 , H04Q7/00
CPC分类号： H04W8/04 , H04W8/26 , H04W80/04
摘要： An addressing scheme for a packet-based multiaccess mobile communications system, which includes a plurality of mobile user stations and a plurality of network nodes, is provided. In such addressing scheme, each mobile station is assigned an address which is a combination (preferably, a concatenation) of a unique identifier of a network node with which the mobile station is currently associated and an identifier of the mobile station. The network node identifiers may be uniquely assigned by a network administrator, while the identifiers of the mobile stations may, for example, be set to a universal MAC address assigned to the station. The address may also include a port identifier which indicates the particular application flow associated with the accompanying packets. Similarly, each network node is assigned an address which is a combination (preferably, a concatenation) of its network node identifier and, preferably, an interface identifier. The address may also include a port identifier.
摘要翻译：提供了一种用于基于分组的多接入移动通信系统的寻址方案，其包括多个移动用户站和多个网络节点。在这种寻址方案中，每个移动台被分配地址，该地址是移动台当前与之相关联的网络节点的唯一标识符和移动站的标识符的组合（优选地，级联）。网络节点标识符可以由网络管理员唯一地分配，而移动站的标识符可以例如被设置为分配给站的通用MAC地址。地址还可以包括指示与伴随的分组相关联的特定应用流的端口标识符。类似地，为每个网络节点分配一个地址，该地址是其网络节点标识符的组合（优选地，连接），并且优选地，接口标识符。地址还可以包括端口标识符。

9. 发明授权

US6073248A Distributed precomputation of signal paths in an optical network 失效
标题翻译：光网络中信号路径的分布预计算
公开(公告)号：US6073248A
公开(公告)日：2000-06-06
申请号：US960462
申请日：1997-10-29
申请人： Bharat Tarachand Doshi , Subrahmanyam Dravida , Paramasiviah Harshavardhana , Yufei Wang
发明人： Bharat Tarachand Doshi , Subrahmanyam Dravida , Paramasiviah Harshavardhana , Yufei Wang
IPC分类号： H04J14/02 , H04Q11/00 , G06F11/00 , H04B10/20
CPC分类号： H04Q11/0062 , H04J14/0227 , H04J14/0241 , H04J14/0278 , H04J14/0284 , H04Q2011/0086
摘要： Distributed precomputation techniques for determining primary and/or restoration paths in an optical network. The invention provides a number of partially and fully asynchronous distributed precomputation algorithms which may be implemented, for example, by the nodes of an all-optical network, in which network links are constrained in terms of optical signal wavelength and failure isolation. A given distributed precomputation algorithm may include a first phase in which paths are allocated for capacity demands to the extent possible without resolving contentions, and a second phase in which contentions between demands for the same capacity are resolved. The first phase may implement a contention locking mechanism which locks a primary path of a given demand to prevent other demands from contending for the same capacity, and a link capacity control mechanism which involves storing a link status table at one or more nodes, the link status table listing a number of specific failures and demands which are affected by the failures. The second phase of the distributed precomputation algorithm reroutes paths previously allocated to one or more demands in order to free up capacity required for another demand, so as to optimize overall network capacity utilization.
摘要翻译：用于确定光网络中的主路径和/或恢复路径的分布式预计算技术。本发明提供了许多部分和完全异步的分布式预计算算法，其可以例如由全光网络的节点来实现，其中网络链路在光信号波长和故障隔离方面受到约束。给定的分布式预计算算法可以包括第一阶段，在第一阶段中，在不解决争用的情况下尽可能地分配用于容量需求的路径，以及解决相同容量的需求之间的争用的第二阶段。第一阶段可以实施争用锁定机制，其锁定给定需求的主要路径以防止其他需求竞争相同的容量;以及链路容量控制机制，其涉及将链路状态表存储在一个或多个节点处，所述链路状态表列出了受到故障影响的一些具体故障和需求。分布式预先计算算法的第二阶段重新路由先前分配给一个或多个需求的路径，以便释放另一个需求所需的容量，从而优化整体网络容量利用率。

10. 发明授权

US06349138B1 Method and apparatus for digital transmission incorporating scrambling and forward error correction while preventing bit error spreading associated with descrambling 失效
标题翻译：用于数字传输的方法和装置，其包括加扰和前向纠错，同时防止与解扰相关的位错误扩展
公开(公告)号：US06349138B1
公开(公告)日：2002-02-19
申请号：US08841510
申请日：1997-04-23
申请人： Bharat Tarachand Doshi , Subrahmanyam Dravida , George John Kustka , Peter D. Magill , Curtis A. Siller , Kotikalapudi Sriram
发明人： Bharat Tarachand Doshi , Subrahmanyam Dravida , George John Kustka , Peter D. Magill , Curtis A. Siller , Kotikalapudi Sriram
IPC分类号： H04N7167
CPC分类号： H04L1/0057 , H04L1/0071 , H04L1/0085 , H04L12/2801 , H04L25/03866 , H04N7/173
摘要： The specification relates to a method and apparatus supporting multiple access, bi-directional data and multimedia transfer described over a hybrid fiber/coax (HFC) network, though applicable to transmissions over other media as well. The protocol associated with the present invention supports downstream broadcast transmission from headend to cable modem, and also provides for allocation of bandwidth for cable modems to transmit back to the headend. The protocol supports different access modes such as STM, ATM, and VL; within each subframe of a subframe/frame/masterframe structure. The protocol is utilized over a system which provides for forward error correction (FEC) and scrambling/descrambling, while eliminating the deleterious effects on the error correcting capability of the FEC due to the bit error spreading associated with a scrambling/descrambling function. The protocol adapts to changing demands for a mix of circuit and packet mode applications and allocates upstream and downstream bandwidth in response to the a variety of bursty and isochronous traffic sources.
摘要翻译：本说明书涉及一种支持通过混合光纤/同轴电缆（HFC）网络描述的多路访问，双向数据和多媒体传输的方法和装置，尽管适用于其它介质上的传输。与本发明相关联的协议支持从头端到电缆调制解调器的下行广播传输，并且还为电缆调制解调器的带宽分配提供发送回头端。该协议支持不同的接入方式，如STM，ATM和VL; 在子帧/帧/主帧结构的每个子帧内。该协议通过提供前向纠错（FEC）和加扰/解扰的系统来利用，同时消除由于与加扰/解扰功能相关联的比特误差扩展对FEC的纠错能力的有害影响。该协议适应于对电路和分组模式应用的混合的不断变化的需求，并且响应于各种突发和等时业务源来分配上行和下行带宽。

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