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1. 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。

2. 发明申请

US20080209494A1 Network architecture for intelligent network elements 有权
标题翻译：智能网元的网络架构
公开(公告)号：US20080209494A1
公开(公告)日：2008-08-28
申请号：US11894711
申请日：2007-08-20
申请人： Subrahmanyam Dravida , Dey V. Gupta , Frederick Peralta , Kiran M. Rege , Manas Tandon
发明人： Subrahmanyam Dravida , Dey V. Gupta , Frederick Peralta , Kiran M. Rege , Manas Tandon
IPC分类号： H04N7/173
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/2861 , H04L12/4641 , H04L12/4645 , H04L29/12216 , H04L41/0806 , H04L41/0886 , H04L41/12 , H04L41/5003 , H04L47/10 , H04L47/20 , H04L47/2416 , H04L47/2425 , H04L47/2433 , H04L47/2441 , H04L47/2491 , H04L47/32 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5651 , H04L2012/5679 , H04N7/10 , H04N7/17309 , H04Q3/0045
摘要： Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements to take advantage of existing network configurations. The standard network elements can be selectively replaced by the intelligent network elements in an incremental approach. A tree-and-branch network architecture is therefore established in which each intelligent network element is assigned a routing ID employed in the point-to-point transmissions while leaving legacy analog signals unimpeded. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.
摘要翻译：混合光纤/同轴电缆网络采用用于有线电视的现有电缆设备，并以高于用于有线电视的频率带宽传输数据信号。由于该电缆厂部署在树型和分支拓扑结构中，数据传输可能会受到噪声，可变传输损耗和频率分散的影响，特别是在上行方向。此外，由于树和分支拓扑，网络远端的家庭比靠近头端/ ONU的家庭遭受更大的损失。该系统使用位于馈线/分配网络中的智能网络元件之间的点对点数据链路来提供可靠，安全的双向宽带接入。数字信号在智能网络元件处被终止，被切换和再生以用于在将家庭连接到头端或路由器所需的附加上游或下游数据链路上传输。智能网络元件可以与标准网络元件共同定位或替换，以利用现有的网络配置。标准网元可以以增量方式由智能网元选择性地替代。因此，建立了一种树分支网络架构，其中每个智能网络元件被分配在点对点传输中采用的路由ID，同时保持传统模拟信号不受阻碍。以这种方式，数据链路通过相对较短的同轴电缆运行进行，这可以提供比归属和前端或光网络单元之间的典型端到端馈线/分配连接更大的带宽。

3. 发明申请

US20070010261A1 Methods and devices for interworking of wireless wide area networks and wireless local area networks or wireless personal area networks 有权
标题翻译：无线广域网和无线局域网或无线个人区域网互通的方法和装置
公开(公告)号：US20070010261A1
公开(公告)日：2007-01-11
申请号：US11240323
申请日：2005-09-30
申请人： Subrahmanyam Dravida , Jay Walton , Sanjiv Nanda , Shravan Surineni
发明人： Subrahmanyam Dravida , Jay Walton , Sanjiv Nanda , Shravan Surineni
IPC分类号： H04Q7/20
CPC分类号： G01S5/0009 , H04L12/5692 , H04L67/18 , H04L67/306 , H04W4/02 , H04W4/20 , H04W8/245 , H04W48/08 , H04W48/20 , H04W64/00 , H04W84/12 , H04W88/08
摘要： Embodiments describe methods, systems, and devices that utilize positional information to determine location of other device and/or to provide a location-based message. A method can include receiving a location information of a mobile device and using an access point to transmit location information to one or more other devices that do not include location functionality that are in communication with the mobile device. The method can further include transmitting a message to the mobile device based at least in part on the received access location information. In another embodiment, the method can include receiving a user preference data from the mobile device or one or more other devices and transmitting a communication to the mobile device or one or more other devices that conforms to the user preference data.
摘要翻译：实施例描述利用位置信息来确定其他设备的位置和/或提供基于位置的消息的方法，系统和设备。一种方法可以包括接收移动设备的位置信息并且使用接入点将位置信息发送到不包括与移动设备通信的位置功能的一个或多个其他设备。该方法还可以包括至少部分地基于所接收的访问位置信息向移动设备发送消息。在另一个实施例中，该方法可以包括从移动设备或一个或多个其他设备接收用户偏好数据，并向移动设备或符合用户偏好数据的一个或多个其他设备发送通信。

4. 发明授权

US07146630B2 Broadband system with intelligent network devices 有权
公开(公告)号：US07146630B2
公开(公告)日：2006-12-05
申请号：US09952374
申请日：2001-09-13
申请人： Subrahmanyam Dravida , Prasad Dorbala , Dev V. Gupta , Satya V. Gupta
发明人： Subrahmanyam Dravida , Prasad Dorbala , Dev V. Gupta , Satya V. Gupta
IPC分类号： H04N7/173 , H04N7/16
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/2874 , H04L12/2876 , H04L12/4641 , H04L29/12216 , H04L41/12 , H04L41/5003 , H04L41/5022 , H04L41/5054 , H04L41/5087 , H04L41/509 , H04L47/10 , H04L47/15 , H04L47/20 , H04L47/24 , H04L47/2416 , H04L47/2425 , H04L47/2433 , H04L47/2441 , H04L47/2491 , H04L47/32 , H04L47/70 , H04L47/724 , H04L47/788 , H04L47/801 , H04L47/805 , H04L47/822 , H04L47/829 , H04L69/40 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5651 , H04L2012/5679 , H04N7/10 , H04N7/17309 , H04N21/6118 , H04N21/6168 , H04Q3/0045
摘要： Hybrid fiber/coax networks employ the existing cable plant used for cable TV and transmit data signals in a frequency bandwidth above that which is used for cable TV. As this cable plant was deployed in a tree and branch topology, data transmissions may be susceptible to noise, variable transmission loss and frequency dispersion, particularly in the upstream direction. Further, due to the tree and branch topology, homes at the far end of the network experience much greater loss than do the homes that are near to the headend/ONU. The present system, which uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. The intelligent network elements can be co-located with or replace the standard network elements to take advantage of existing network configurations. The standard network elements can be selectively replaced by the intelligent network elements in an incremental approach. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.

5. 发明授权

US06195780B1 Method and apparatus for generating cyclical redundancy code 失效
标题翻译：用于生成循环冗余码的方法和装置
公开(公告)号：US06195780B1
公开(公告)日：2001-02-27
申请号：US08987927
申请日：1997-12-10
申请人： Subrahmanyam Dravida , Srinivasan S. Ravikumar
发明人： Subrahmanyam Dravida , Srinivasan S. Ravikumar
IPC分类号： H03M1300
CPC分类号： H03M13/091 , H03M13/6508
摘要： The specification relates to a method and an apparatus for generating cyclical redundancy code (CRC) by analyzing segmented groups of bits from a message concurrently, producing a temporary remainder value as a result of a multiple bit lookup from a generating CRC lookup table, using the temporary remainder or a portion thereof along with the next sequential segmented group of message bits as exclusive-or inputs, taking the result of the exclusive-or output and applying the result as a lookup value from the generating CRC lookup table. The process is repeated until the message groups have been depleted, at which time the message is completely coded and the temporary remainder existing at the time represents the CRC checkbits for the message. The recursive method developed in association with the present invention is called a Recursive Syndrome Expansion (RSE).
摘要翻译：本说明书涉及一种用于通过从消息中同时分析分组的比特组来产生循环冗余码（CRC）的方法和装置，其使用生成CRC查找表从多个比特查找结果产生临时余数值，临时剩余部分或其一部分以及下一个顺序分组的消息比特组作为排他或输入，取出排他或输出的结果，并将结果作为查询值从生成CRC查询表中应用。重复该过程直到消息组已经耗尽，此时消息被完全编码，并且此时存在的临时余数表示消息的CRC校验位。结合本发明开发的递归方法称为递归综合征扩张（RSE）。

6. 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。

7. 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。

8. 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。

9. 发明授权

US08594112B2 Memory management for high speed media access control 失效
标题翻译：高速媒体访问控制的内存管理
公开(公告)号：US08594112B2
公开(公告)日：2013-11-26
申请号：US13425031
申请日：2012-03-20
申请人： Subrahmanyam Dravida , Sriram Narayan
发明人： Subrahmanyam Dravida , Sriram Narayan
IPC分类号： H04L12/56
CPC分类号： H04L49/901 , H04L47/14 , H04L47/621 , H04L49/90 , H04L49/9021 , H04L49/9073 , H04W36/02 , H04W36/28 , H04W76/20 , H04W88/02 , H04W88/08
摘要： Aspects disclosed herein address the need in the art for memory management for high speed media access control. A packet buffer may store packets with a first data structure, comprising the packet length, sequence number, and a pointer to a second data structure. Packet data may be stored in a linked list of one or more second data structures. Transmit and receive queues may be formed using linked lists or arrays of the first data structures. Memory locations for storing first and second data structures may be kept in lists indicating free locations for the respective data structure types. A flexible memory architecture is disclosed in which two configurations may be selected. Various other aspects are also presented.
摘要翻译：本文公开的方面解决了本领域对用于高速媒体访问控制的存储器管理的需要。分组缓冲器可以存储具有第一数据结构的分组，包括分组长度，序列号和指向第二数据结构的指针。分组数据可以存储在一个或多个第二数据结构的链接列表中。发送和接收队列可以使用第一数据结构的链表或数组来形成。用于存储第一和第二数据结构的存储器位置可以保存在指示相应数据结构类型的空闲位置的列表中。公开了一种灵活的存储器架构，其中可以选择两种配置。还提出了各种其他方面。

10. 发明授权

US08462626B2 System and method for mapping end user identifiers to access device identifiers 有权
标题翻译：用于将最终用户标识符映射到访问设备标识符的系统和方法
公开(公告)号：US08462626B2
公开(公告)日：2013-06-11
申请号：US11894750
申请日：2007-08-20
申请人： Gautam Desai , Subrahmanyam Dravida , Satya V. Gupta , Kiran M. Rege , Manas Tandon , Ravi S. Kumar , DeQuan Wu
发明人： Gautam Desai , Subrahmanyam Dravida , Satya V. Gupta , Kiran M. Rege , Manas Tandon , Ravi S. Kumar , DeQuan Wu
IPC分类号： G01R31/08
CPC分类号： H04L61/2015 , H04L12/2801 , H04L12/2856 , H04L12/2859 , H04L12/4641 , H04L29/12216 , H04L41/0803 , H04L41/0886 , H04L41/12 , H04L41/5003 , H04L43/12 , H04L47/10 , H04L47/15 , H04L47/20 , H04L47/215 , H04L47/24 , H04L47/2416 , H04L47/2425 , H04L47/2433 , H04L47/2441 , H04L47/2491 , H04L47/32 , H04L47/50 , H04L47/521 , H04L47/6225 , H04L47/623 , H04L47/70 , H04L47/724 , H04L47/788 , H04L47/801 , H04L47/805 , H04L47/822 , H04L47/829 , H04L2012/5605 , H04L2012/5606 , H04L2012/561 , H04L2012/5651 , H04L2012/5679 , H04N7/10 , H04N7/17309 , H04N21/6118 , H04N21/6168 , H04N21/6402 , H04Q3/0045
摘要： The present system uses point-to-point data links between intelligent network elements located in the feeder/distribution network to provide reliable, secure, bi-directional broadband access. Digital signals, or messages, are terminated at the intelligent network elements, switched and regenerated for transmission across additional upstream or downstream data links as needed to connect a home to a headend or router. Messages indicative of an end user routing ID (RID) are identified and the information extracted for user with successive messages. In this manner, the data links are made over relatively short runs of coax cable, which can provide greater bandwidth than the typical end-to-end feeder/distribution connection between a home and the headend or optical network unit.
摘要翻译：本系统使用位于馈线/分配网络中的智能网络元件之间的点对点数据链路，以提供可靠，安全的双向宽带接入。数字信号或消息在智能网络元件处被终止，被切换和重新生成，以便在将家庭连接到头端或路由器所需的附加上游或下游数据链路上传输。识别指示最终用户路由ID（RID）的消息，并且为具有连续消息的用户提取信息。以这种方式，数据链路通过相对较短的同轴电缆运行进行，这可以提供比归属和前端或光网络单元之间的典型端到端馈线/分配连接更大的带宽。

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