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1. 发明授权

US07180863B1 Method and apparatus for overload control in multi-branch packet networks 有权
标题翻译：多分支分组网络中过载控制的方法和装置
公开(公告)号：US07180863B1
公开(公告)日：2007-02-20
申请号：US09488182
申请日：2000-01-20
申请人： Eric Jonathan Bauer , Wassim A. Matragi , Behrokh Samadi
发明人： Eric Jonathan Bauer , Wassim A. Matragi , Behrokh Samadi
IPC分类号： H04L12/26 , H04L12/66
CPC分类号： H04M7/0057
摘要： A method and apparatus are disclosed for congestion management in a multi-branch Internet Protocol-based private branch exchange switch. The multi-branch Internet Protocol-based private branch exchange switch is interconnected through (i) a packet network referred to as the primary network, such as a wide area network, and (ii) an alternate network, such as the public switched telephone network. Packet phone adapters associated with each packet telephone unit monitor packet telephone calls and report delay information to communication servers. The communication server can reroute the packet telephony calls through the secondary network upon detection of congestion in the underlying primary network, thereby preserving voice quality. The packet phone adapter will discard records collected from calls whose duration is below a minimum value, to ensure reliable congestion information. Each communication server records reported voice quality of service information in a congestion control database. An overload control process processes each call set up request and determines if the requested path is congested. If a requested path is congested, then the overload control process may forward the call using the secondary network.
摘要翻译：公开了一种用于基于多分支基于互联网协议的私人交换交换机中的拥塞管理的方法和装置。基于多分支因特网协议的私人交换交换机通过（i）被称为主要网络的分组网络（诸如广域网）和（ii）诸如公共交换电话网络的备用网络互连。与每个分组电话单元相关联的分组电话适配器监视分组电话并将延迟信息报告给通信服务器。通信服务器可以在检测到基础主网络中的拥塞时，通过辅助网络重新路由分组电话呼叫，从而保持语音质量。分组电话适配器将丢弃持续时间低于最小值的呼叫收集的记录，以确保可靠的拥塞信息。每个通信服务器在拥塞控制数据库中记录服务信息的报告语音质量。过载控制过程处理每个呼叫建立请求并确定所请求的路径是否拥塞。如果请求的路径拥塞，则过载控制过程可以使用辅助网络转发呼叫。

2. 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。

3. 发明授权

US06735192B1 Method and apparatus for dynamically varying a packet delay in a packet network based on a log-normal delay distribution 有权
标题翻译：用于基于对数正态延迟分布动态地改变分组网络中的分组延迟的方法和装置
公开(公告)号：US06735192B1
公开(公告)日：2004-05-11
申请号：US09408771
申请日：1999-09-29
申请人： Joseph Fried , Wassim A. Matragi , Behrokh Samadi
发明人： Joseph Fried , Wassim A. Matragi , Behrokh Samadi
IPC分类号： H04L1266
CPC分类号： H04L65/604 , H04L29/06027 , H04L65/80
摘要： A method and apparatus are disclosed for dynamically adapting the play-out delay for voice packets transmitted over a local area network using the Ethernet standard as an access mechanism. It has been observed that the distribution of voice packet delays in a LAN (shared by voice and data traffic) follows a log-normal distribution. An adaptive algorithm is disclosed to estimate the parameters of the log-normal distribution and to apply a dynamic play-out delay to improve the quality of packetized voice conversations, quantified by minimum delay and packet loss. For example, the size, B, of the play-out buffer can be established to ensure that the packet loss does not exceed one percent (1%). The distribution parameters are continuously updated and the size of the play-out buffer, B, is modified at the beginning of every calibration interval according to the illustrative 99% percentile of the delay distribution.
摘要翻译：公开了一种用于通过使用以太网标准作为访问机制来动态地适应通过局域网传输的语音分组的播出延迟的方法和装置。已经观察到，LAN（由语音和数据业务共享）中的语音分组延迟的分布遵循对数正态分布。公开了一种自适应算法来估计对数正态分布的参数，并且应用动态播出延迟来提高分组语音对话的质量，由最小延迟和分组丢失量化。例如，可以建立播出缓冲区的大小B，以确保分组丢失不超过百分之一（1％）。分布参数不断更新，并且播放缓冲器B的大小根据延迟分布的99％百分位数在每个校准间隔的开头进行修改。

4. 发明授权

US06977899B1 Method and apparatus for message-based overload control in a distributed call-processor communication system 有权
标题翻译：在分布式呼叫处理器通信系统中用于基于消息的过载控制的方法和装置
公开(公告)号：US06977899B1
公开(公告)日：2005-12-20
申请号：US09488181
申请日：2000-01-20
申请人： Wassim A. Matragi , Behrokh Samadi
发明人： Wassim A. Matragi , Behrokh Samadi
IPC分类号： G06F15/16 , G06F15/173 , H04J1/16 , H04J3/14 , H04L29/06 , H04L29/08
CPC分类号： H04L65/1046 , H04L29/06027 , H04L65/1069 , H04L67/1002 , H04L67/1008 , H04L67/1036 , H04L67/14 , H04L67/322
摘要： A method and apparatus are disclosed for alleviating congestion and overload in a distributed call-processing system interconnected through a packet based network. The illustrative Internet Protocol network includes a plurality of end terminals and distributed call processors. According to an aspect of the invention, the call processor will determine whether to process a call request or to forward the request to another call processor. Generally, the call processor will declare an overload condition if sufficient resources (including processing or memory resources) are not available to process a given call. If a call processor determines that it is too congested to process a call, the call processor enters an overload condition, selects an alternate call processor and forwards the request to the alternate call processor. Each call processor maintains an ordered list of call processors that indicates whether or not each call processor is overloaded.
摘要翻译：公开了一种用于减轻通过基于分组的网络互连的分布式呼叫处理系统中的拥塞和过载的方法和装置。说明性的因特网协议网络包括多个终端终端和分布式呼叫处理器。根据本发明的一个方面，呼叫处理器将确定是处理呼叫请求还是将请求转发到另一呼叫处理器。通常，如果没有足够的资源（包括处理或内存资源）来处理给定的呼叫，则呼叫处理器将声明过载条件。如果呼叫处理器确定它过于拥挤以处理呼叫，则呼叫处理器进入过载状态，选择备用呼叫处理器并将该请求转发给备用呼叫处理器。每个呼叫处理器维护呼叫处理器的有序列表，其指示每个呼叫处理器是否过载。

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