公开(公告)号：US6081513A

公开(公告)日：2000-06-27

申请号：US798530

申请日：1997-02-10

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04L12/56 ,  H04Q11/04 ,  H04L12/16

CPC分类号： H04Q11/0478 ,  H04L12/5601 ,  H04L2012/5617

摘要： A method for providing real-time multimedia conferencing services is described over a hybrid network, consisting of packet-switched nonguaranteed quality of service local area networks and a cell-switched wide area network having a multimedia bridge connected to the wide area network. The local area networks and the multimedia bridge are interconnected to the wide area network via routers. New architectural entities within the multimedia bridge execute a multimedia performance and resource analysis algorithm and determine whether the network and the bridge have sufficient resources to satisfy the requirements of the multimedia conference call. If sufficient resources are not available, it is determined whether the requirements for the higher priority services can be provided by preempting the lower priority resources. Signaling information messages are exchanged between the communicating entities indicating whether the multimedia conference can be accepted, rejected, or accepted to operate in degraded mode, based on the analysis performed by the bridge.

摘要翻译： 通过混合网络描述了一种提供实时多媒体会议服务的方法，该混合网络由分组交换的非保密服务质量的局域网和具有连接到广域网的多媒体网桥的小区交换广域网组成。 局域网和多媒体网桥通过路由器互连到广域网。 多媒体网桥中的新建筑实体执行多媒体性能和资源分析算法，并确定网络和网桥是否有足够的资源来满足多媒体电话会议的要求。 如果没有足够的资源，则确定是否可以通过抢占较低优先级的资源来提供对较高优先级业务的要求。 基于由桥执行的分析，在通信实体之间交换信令信息，指示多媒体会议是否可被接受，拒绝或被接受以在劣化模式下操作。

公开(公告)号：US08848691B2

公开(公告)日：2014-09-30

申请号：US12474603

申请日：2009-05-29

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04L12/66

CPC分类号： H04W8/12 ,  H04L29/06027 ,  H04L65/1009 ,  H04L67/14 ,  H04M3/42348 ,  H04M7/0078 ,  H04M7/128 ,  H04W8/02 ,  H04W40/36

摘要： A framework of a common mobility management protocol for Q.5/16 includes a high level protocol for performing the functions of address resolution, routing, location update and authentication. The common mobility management protocol can be used by existing and future multimedia applications (MA's) to support mobility management for messaging among mobility management authentication function (AuF), home location function (HLF) and visitor location function (VLF) databases/servers, and the corresponding multimedia application functional entities (MAFEs) of the multimedia applications (MA's). The common mobility management protocol may replace, act in concert with or in sequence with existent interworking protocols for the various multimedia applications. Reference point architectures, functional characteristics, features, and capabilities of the protocol are described including call flows and message syntax. The disclosure presents the scope of Q.5/16 and how H.MMS.1 (H.323 Mobility), H.MMS.2 (Global Mobility), and H.MMS.3 (Presence/Instant Messaging Mobility) can be a part of the same common mobility management protocol.

摘要翻译： Q.5 / 16的通用移动性管理协议的框架包括执行地址解析，路由，位置更新和认证功能的高级协议。 现有和未来的多媒体应用（MA）可以使用通用移动性管理协议来支持移动性管理认证功能（AuF），归属位置功能（HLF）和访问者位置功能（VLF）数据库/服务器之间的消息传递的移动性管理，以及 多媒体应用程序（MA）的相应多媒体应用功能实体（MAFE）。 公共移动性管理协议可以替代，与各种多媒体应用的现有互通协议一致地或依次地行动。 描述协议的参考点架构，功能特征，特征和功能，包括呼叫流和消息语法。 本披露提出了Q.5 / 16的范围以及H.MMS.1（H.323移动性），H.MMS.2（全球流动性）和H.MMS.3（存在/即时消息流动性）可以如何 相同的通用移动管理协议的一部分。

公开(公告)号：US07715412B2

公开(公告)日：2010-05-11

申请号：US10988926

申请日：2004-11-15

申请人： Siroos K. Afshar ,  Marian Rogers Croak ,  Radhika R. Roy ,  Ralph Utano

发明人： Siroos K. Afshar ,  Marian Rogers Croak ,  Radhika R. Roy ,  Ralph Utano

IPC分类号： H04L12/28

CPC分类号： H04M7/006

摘要： A decomposed H.323 border element is disclosed that is useful for providing an entry point from one or more H.323-based networks into a SIP-based VoIP network. In one embodiment, the signaling element of the BE is separated into a separate functional entity from the media control element to facilitate a single signaling entity controlling multiple media entities. In another embodiment, the security element of the border element is also separated from the media control element so that firewall and network address translation elements may be performed by a separate functional entity. In a further embodiment, the media transcoding element is separated from the media control element. In a final embodiment, the internetworking facility between the SIP and H.323 element is separate from the H.323 gatekeeper elements.

摘要翻译： 公开了分解的H.323边界元素，其用于从一个或多个基于H.323的网络向基于SIP的VoIP网络提供入口点。 在一个实施例中，BE的信令元件被分离成与媒体控制元件分离的功能实体，以便于控制多个媒体实体的单个信令实体。 在另一个实施例中，边界元素的安全元件也与媒体控制元件分离，使得防火墙和网络地址转换元件可以由单独的功能实体执行。 在另一实施例中，媒体转码元件与媒体控制元件分离。 在最终实施例中，SIP和H.323元件之间的网际互联设施与H.323网守元件分开。

公开(公告)号：US07551608B1

公开(公告)日：2009-06-23

申请号：US11169538

申请日：2005-06-29

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04L12/66

CPC分类号： H04W8/12 ,  H04L29/06027 ,  H04L65/1009 ,  H04L67/14 ,  H04M3/42348 ,  H04M7/0078 ,  H04M7/128 ,  H04W8/02 ,  H04W40/36

摘要： A framework of a common mobility management protocol for Q.5/16 (Mobility for Multimedia Systems/Applications and Services) comprises a high level protocol for performing the functions of address resolution, routing, location update and authentication. The common mobility management protocol can be used by all existent and future multimedia applications (MA's) to support mobility management for messaging among mobility management authentication function (AuF), home location function (HLF) and visitor location function (VLF) databases/servers, and the corresponding multimedia application functional entities (MAFEs) of the multimedia applications (MA's). The common mobility management protocol may replace, act in concert with or in sequence with existent interworking protocols for the various multimedia applications. Reference point architectures, functional characteristics, features, and capabilities of the protocol are described including call flows and message syntax. In addition, the scope of Q.5/16 and how H.MMS.1 (H.323 Mobility), H.MMS.2 (Global Mobility), and H.MMS.3 (Presence/Instant Messaging Mobility) can be a part of the same common mobility management protocol have also been presented.

摘要翻译： 用于Q.5 / 16（多媒体系统/应用和服务的移动性）的通用移动性管理协议的框架包括用于执行地址解析，路由，位置更新和认证的功能的高级协议。 所有现有和未来的多媒体应用（MA）可以使用公共移动性管理协议来支持移动性管理认证功能（AuF），归属位置功能（HLF）和访问者位置功能（VLF）数据库/服务器之间的消息传递的移动性管理， 以及多媒体应用（MA）的相应多媒体应用功能实体（MAFE）。 公共移动性管理协议可以替代，与各种多媒体应用的现有互通协议一致地或依次地进行。 描述协议的参考点架构，功能特征，特征和功能，包括呼叫流和消息语法。 此外，Q.5 / 16的范围以及H.MMS.1（H.323移动性），H.MMS.2（全球流动性）和H.MMS.3（存在/即时消息流动性）可以如何 也提出了同一共同移动管理协议的一部分。

公开(公告)号：US07471686B2

公开(公告)日：2008-12-30

申请号：US11879467

申请日：2007-07-17

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04L12/56 ,  G06F15/173

CPC分类号： H04L65/1009 ,  H04L29/06 ,  H04L29/06027 ,  H04L29/12009 ,  H04L29/12122 ,  H04L29/12188 ,  H04L29/12584 ,  H04L29/12594 ,  H04L61/1547 ,  H04L61/1588 ,  H04L61/2596 ,  H04L61/301 ,  H04L61/306

摘要： The present invention provides a method and system for assuring H.323 alias address portability to an H.323 user in real-time H.323 multimedia communications where the H.323 user is registered with a home gatekeeper for the home zone of the H.323 user. Alias address portability may be obtained using a central database that is known to the administrative zones and is used for alias address mapping, or alternatively, may be obtained by using a distributed database. The method may be implemented by: sending, by the H.323 user, a message with a called H.323 entity's alias address, to the home gatekeeper to originate a call to the called H.323 entity; confirming that the alias address, services, and service providers are portable; converting the alias address to a called routable alias address for the called H.323 entity and sending the alias address to the H.323 user; and placing the call to the called H.323 entity.

公开(公告)号：US06967941B2

公开(公告)日：2005-11-22

申请号：US09847915

申请日：2001-05-02

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04L29/06 ,  H04M3/42 ,  H04M7/00 ,  H04W80/10 ,  H04L12/28 ,  G06F15/16 ,  H04L12/66

CPC分类号： H04L65/1043 ,  H04L29/06 ,  H04L29/06027 ,  H04L65/1009 ,  H04M3/42272 ,  H04M7/006 ,  H04W80/10

摘要： The present invention relates to a method and apparatus for inter-domain mobility management for a telephony network. The present invention also relates generally to the H.323 standard for transmitting audio and video data streams, and more particularly to extending the H.323 standard to support mobility in a multimedia communication system with services over packet-based networks.

公开(公告)号：US06636487B1

公开(公告)日：2003-10-21

申请号：US09358534

申请日：1999-07-22

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04L1216

CPC分类号： H04L65/80 ,  H04L12/1813 ,  H04L12/5601 ,  H04L29/06027 ,  H04L65/4038 ,  H04L2012/5636 ,  H04L2012/5642 ,  H04L2012/5664

摘要： An apparatus and method for providing multimedia conferencing services over an ATM network with an unspecified bit rate quality of service class. Because the signals of the unspecified bit rate multimedia conference will be dropped before those of any guaranteed quality of service conferences, a multimedia bridge monitors the ATM network for congestion. If congestion is detected, the multimedia bridge searches for alternate non-congested paths so that the UBR multimedia conference can be maintained without cell losses. If no non-congested paths are found, the multimedia bridge scales the video portion of the UBR multimedia conference signals so that the UBR multimedia conference can continue. The scaling is performed in accordance with user-defined parameters that result in a reduced bandwidth video signal that can be transmitted along the congested ATM network.

摘要翻译： 一种用于通过ATM网络提供具有未指定的比特率服务质量等级的多媒体会议服务的装置和方法。 由于未指定比特率多媒体会议的信号将在任何保证的业务质量会议之前丢弃，所以多媒体网桥监控ATM网络的拥塞。 如果检测到拥塞，则多媒体网桥将搜索备用的非拥塞路径，以便可以维持UBR多媒体会议而不会出现信元丢失。 如果没有找到非拥塞的路径，则多媒体网桥扩展UBR多媒体会议信号的视频部分，以便UBR多媒体会议可以继续。 根据用户定义的参数执行缩放，该参数导致可以沿着拥塞的ATM网络传输的减少带宽的视频信号。

公开(公告)号：US6026080A

公开(公告)日：2000-02-15

申请号：US841057

申请日：1997-04-29

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04L12/56 ,  H04N7/14 ,  H04N7/15 ,  H04Q11/04 ,  H04L12/16 ,  H04J3/16

CPC分类号： H04N7/147 ,  H04N7/15 ,  H04Q11/0478 ,  H04L2012/5616 ,  H04L2012/5638 ,  H04L2012/5647 ,  H04L2012/5674

摘要： An enhanced H.321-based multipoint, multimedia conferencing service is provided over the ATM WAN interconnecting geographically dispersed H.321 terminals with a centralized H.321 MCU located within the WAN. The performance of H.321 multimedia conferencing services over the ATM WAN is improved by providing a modified WAN-based H.321 MCU which de-jiterizes cell delay variation and detects cell losses. The MCU supplies the reference clock signal that will be used by all communicating entities for synchronization, smoothes ATM cell delay variation and creates dummy bits in the case of cell losses, to create a more accurate H.221 frame. The information about the dummy bits of the H.221 frame is sent to upper layer entities to facilitate compensation at the appropriate positions of the cell/bit losses for audio and/or video traffic. The higher layer audio and video entities compensate for audio and/or video cell/bit losses with the information provided by the lower entities. In addition, intramedia and intermedia synchronization are provided for both audio and video traffic. Finally, transport protocol suits are incorporated on the top of H.221 layer to recover data cell losses or errors. Customer premises-based H.321 terminals may also employ the modified H.321 services noted above in the H.321 MCU to compensate for audio and/or video cell losses or errors for improvement of performance.

摘要翻译： 通过ATM WAN连接地理分散的H.321终端与位于WAN内的集中式H.321 MCU，提供了基于H.321的多点多媒体会议服务。 通过提供改进的基于WAN的H.321 MCU来改善ATM WAN上的H.321多媒体会议服务的性能，该H.321 MCU对单元延迟变化进行了调整，并检测到单元损耗。 MCU提供将由所有通信实体用于同步的参考时钟信号，平滑ATM信元延迟变化，并在信元丢失的情况下创建虚拟位，以创建更准确的H.221帧。 关于H.221帧的虚拟位的信息被发送到上层实体，以便在用于音频和/或视频业务的小区/比特丢失的适当位置处进行补偿。 较高层音频和视频实体利用下层实体提供的信息补偿音频和/或视频信元/比特丢失。 此外，为音频和视频流量提供了内部媒体和媒体间同步。 最后，传输协议套件被并入H.221层的顶部，以恢复数据单元的丢失或错误。 基于客户端的H.321终端还可以使用H.321 MCU上述修改的H.321服务来补偿音频和/或视频信元丢失或性能改善的错误。

公开(公告)号：US20150016422A1

公开(公告)日：2015-01-15

申请号：US14499913

申请日：2014-09-29

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04W8/12 ,  H04W40/36

CPC分类号： H04W8/12 ,  H04L29/06027 ,  H04L65/1009 ,  H04L67/14 ,  H04M3/42348 ,  H04M7/0078 ,  H04M7/128 ,  H04W8/02 ,  H04W40/36

摘要： A framework of a common mobility management protocol for Q.5/16 includes a high level protocol for performing the functions of address resolution, routing, location update and authentication. The common mobility management protocol can be used by existing and future multimedia applications (MA's) to support mobility management for messaging among mobility management authentication function (AuF), home location function (HLF) and visitor location function (VLF) databases/servers, and the corresponding multimedia application functional entities (MAFEs) of the multimedia applications (MA's). The common mobility management protocol may replace, act in concert with or in sequence with existent interworking protocols for the various multimedia applications. Reference point architectures, functional characteristics, features, and capabilities of the protocol are described including call flows and message syntax. The disclosure presents the scope of Q.5/16 and how H.MMS.1 (H.323 Mobility), H.MMS.2 (Global Mobility), and H.MMS.3 (Presence/Instant Messaging Mobility) can be a part of the same common mobility management protocol.

公开(公告)号：US20100039964A1

公开(公告)日：2010-02-18

申请号：US12605741

申请日：2009-10-26

申请人： Radhika R. Roy

发明人： Radhika R. Roy

IPC分类号： H04L12/16

CPC分类号： H04L12/2801 ,  H04L2012/5605 ,  H04L2012/5606 ,  H04L2012/561 ,  H04L2012/5638 ,  H04L2012/5642 ,  H04Q11/0478

摘要： A technique for providing real-time multimedia conferencing services with guaranteed performance, in a hybrid networking environment, by interconnecting cable modem-based premises networks via hybrid fiber coaxial (HFC) access networks and an ATM wide area network is disclosed. The ATM wide area network may be divided into a plurality of access network domains and one backbone network domain to provide efficient and intelligent multimedia conferencing services. Each ATM access network domain has one cable modem server as well as access multimedia bridge server. There is only one central network server and one central multimedia bridge server within the backbone network domain. Each cable modem server located in an ATM access network domain maintains necessary information of how the cable network bandwidth is used by existing calls, and will be allocated when new multimedia conference calls are initiated, in accordance with desired priority and performance levels.

摘要翻译： 公开了一种在混合网络环境中通过混合光纤同轴（HFC）接入网络和ATM广域网互联基于电缆调制解调器的房屋网络来提供具有保证性能的实时多媒体会议业务的技术。 ATM广域网可以分为多个接入网域和一个骨干网域，以提供高效智能的多媒体会议业务。 每个ATM接入网域都有一个电缆调制解调器服务器以及接入多媒体桥服务器。 骨干网域内只有一台中央网络服务器和一台中央多媒体网桥服务器。 位于ATM接入网域中的每个电缆调制解调器服务器保持有关现有呼叫如何使用有线网络带宽的必要信息，并且将根据期望的优先级和性能水平在新的多媒体会议呼叫被启动时被分配。