公开(公告)号：US20050141550A1

公开(公告)日：2005-06-30

申请号：US11065308

申请日：2005-02-24

申请人： Roy Mauger ,  Julian Cable ,  Clive Hayball

发明人： Roy Mauger ,  Julian Cable ,  Clive Hayball

IPC分类号： H04M3/00 ,  H04L12/56 ,  H04Q3/00 ,  H04Q11/04

CPC分类号： H04Q11/0478 ,  H04L2012/562 ,  H04L2012/563 ,  H04L2012/5663 ,  H04Q3/0016 ,  H04Q2213/1302 ,  H04Q2213/13031 ,  H04Q2213/1304 ,  H04Q2213/13103 ,  H04Q2213/13109 ,  H04Q2213/13167 ,  H04Q2213/13204 ,  H04Q2213/1322 ,  H04Q2213/1329 ,  H04Q2213/13292 ,  H04Q2213/1332 ,  H04Q2213/1338

摘要： To ensure an effective mechanism for disaster recovery, system migration and network enlargement, a communication system (FIG. 6) comprises a narrowband-to-broadband interface (300) having a plurality of network adaptors (302-306) interconnected to a switch (314-316) that provides access to a plurality of virtual channels (318-321) supported by a broadband network. The plurality of network adaptors (302-306) are also coupled to a plurality of trunks (308-312) that each support at least one of a plurality of different communication functions. At least two call servers (324-326) are independently coupled to the narrowband-to-broadband interface (300) and are arranged to control interconnection of trunks to virtual channels, while each of the at least two call servers is responsible for controlling interconnections of group of trunks that share a common communication function within each group. Communication system functionality is therefore separated between the at least two call servers.

摘要翻译： 为了确保用于灾难恢复，系统迁移和网络扩大的有效机制，通信系统（图6）包括具有互连到交换机的多个网络适配器（302-306）的窄带到宽带接口（300） 314-316），其提供对由宽带网络支持的多个虚拟信道（318-321）的访问。 多个网络适配器（302-306）还耦合到多个中继线（308-312），每个中继线支持多个不同通信功能中的至少一个。 至少两个呼叫服务器（324-326）独立地耦合到窄带到宽带接口（300），并且被布置成控制中继线到虚拟信道的互连，而至少两个呼叫服务器中的每一个负责控制互连 在每个组内共享通信功能的干线组。 因此，通信系统功能在至少两个呼叫服务器之间分离。

公开(公告)号：US06854013B2

公开(公告)日：2005-02-08

申请号：US09888883

申请日：2001-06-25

申请人： Julian Cable ,  Clive Hayball ,  Nigel Bragg

发明人： Julian Cable ,  Clive Hayball ,  Nigel Bragg

IPC分类号： H04L29/06 ,  H04L29/08 ,  G06F15/173

CPC分类号： H04L67/1008 ,  H04L29/06 ,  H04L67/1002 ,  H04L67/101 ,  H04L67/1021 ,  H04L2029/06054

摘要： There is presently no single accepted scheme to support Quality of Service guarantees for IP based applications, although RSVP is the prevailing standard for network resource reservation. Thus, providing end-to-end Quality of Service guarantees for content delivery across the Internet presents a challenge for Service Providers. Typically load balancing algorithms are used for picking the best server, with respect to server capacity for satisfying a request, but they can not guarantee Quality of Service for the whole duration of the network transaction. The invention proposes a method of distributing server load in an IP network, comprising building an association between a subscriber edge device and a server controller using a packet switched network Quality of Service mechanism. A fair share of server bandwidth is offered out to the subscriber edge device, and a resource request from the client is directed, via the subscriber edge device and through a server controller, to a server having an amount of server bandwidth required by the client. The required fair share of server bandwidth is then reserved for meeting the client's resource request. The invention also proposes a subscriber edge device, a data center device, and a communications network comprising each. The subscriber edge device comprises, a resource requester for sending a request to the server controller associated with the source location of the requested resource, a resource reserver that reserves an amount of bandwidth using a Quality of Service mechanism and releases any unneeded bandwidth, and a resource returner that returns the requested resource to the client. The data center device comprises, a resource allocator that allocates fair shares of server bandwidth to the network, and a server controller that offers fair shares of server bandwidth using a Quality of Service mechanism.

摘要翻译： 目前，没有一个单一的接受方案来支持基于IP的应用的服务质量保证，尽管RSVP是网络资源预留的普遍标准。 因此，为互联网上的内容交付提供端到端的服务质量保证，为服务提供商提出了挑战。 通常，负载均衡算法用于挑选最佳服务器，关于满足请求的服务器容量，但是它们不能保证整个网络交易持续时间内的服务质量。 本发明提出一种在IP网络中分发服务器负载的方法，包括使用分组交换网络服务质量机制来建立用户边缘设备和服务器控制器之间的关联。 向用户边缘设备提供公平的服务器带宽份额，并且来自客户端的资源请求经由用户边缘设备并通过服务器控制器被引导到具有客户端所需的服务器带宽量的服务器。 然后保留所需的公平份额的服务器带宽以满足客户端的资源请求。 本发明还提出了一种用户边缘设备，数据中心设备和包括每个设备的通信网络。 用户边缘设备包括：资源请求者，用于向与所请求资源的源位置相关联的服务器控制器发送请求;资源预留器，其使用服务质量机制来保留带宽量并且释放任何不需要的带宽;以及 资源返回程序将请求的资源返回给客户端。 数据中心设备包括：向网络分配服务器带宽的公平共享的资源分配器，以及使用服务质量机制提供服务器带宽的公平共享的服务器控制器。

公开(公告)号：US06570859B1

公开(公告)日：2003-05-27

申请号：US09469140

申请日：1999-12-21

申请人： Julian Cable ,  Laurent Thomasson ,  Peter Takats

发明人： Julian Cable ,  Laurent Thomasson ,  Peter Takats

IPC分类号： H04B7212

CPC分类号： H04B7/18515

摘要： A satellite communication system having a spatial segment comprising at least one satellite, preferably in a geostationary orbit, carrying a multi-beam telecommunication payload and a terrestrial segment comprising access gateways to terrestrial networks each arranged to communicate with the satellite via a forward link uplink beam and a return link downlink beam and user terminals each arranged to communicate with a satellite via a forward link downlink beam and a return link uplink beam, wherein the forward link carries signals multiplexed in time and the return link carries signals multiplexed in frequency and time, the payload comprising; a forward link router for routing signals multiplexed in time from a forward link uplink beam on a frame basis to a forward downlink beam, a return link router for routing signals multiplexed in frequency and time from a return uplink beam on a frequency bank basis to a return link downlink beam, and a mesh communication router for receiving signals multiplexed in frequency and time from a return link uplink beam, generating signals multiplexed in time and routing these signals to a forward link downlink beam.

摘要翻译： 一种具有空间段的卫星通信系统，其包括至少一个卫星，优选地在地球静止轨道中，承载多波束电信有效载荷，以及包括接入网关的地面段，每个地面网络被布置成经由前向链路上行链路与卫星通信 以及返回链路下行链路波束和用户终端，每个终端各自被布​​置成经由前向链路下行链路波束和返回链路上行链路与卫星通信，其中前向链路承载时间复用的信号，并且返回链路携带频率和时间多路复用的信号， 有效载荷包括 用于将基于帧的前向链路上行链路多路复用的信号路由到前向下行链路的前向链路路由器，用于将频率和时间复用的信号从基于频率库的返回上行链路路由到 返回链路下行链路波束，以及用于从返回链路上行链路波束接收在频率和时间多路复用的信号的网状通信路由器，产生在时间上复用的信号并将这些信号路由到前向链路下行链路波束。

公开(公告)号：US06731639B1

公开(公告)日：2004-05-04

申请号：US09539123

申请日：2000-03-30

申请人： Tolga Ors ,  Julian Cable ,  Catherine Rosenberg

发明人： Tolga Ors ,  Julian Cable ,  Catherine Rosenberg

IPC分类号： H04L1228

CPC分类号： H04L45/50 ,  H04L45/00 ,  H04L45/16

摘要： A communication system having a multiple access segment (2,48), which comprises a plurality of end systems (6,44) and a switching node (4,46) configured such that each end system can transmit packets to the switching node and such that the switching node can transmit packets which are received by all the end systems. The switching node comprises a switch (5,47) for switching packets from the end systems to intermediate destinations within the system, and the MA segment operates in accordance with a protocol which provides a quality of service requested by the end systems for the packets transmitted over the segment. The switching node comprises means for collating primary label routing information for packets to be transmitted from the end systems across the MA segment which primary label is dependent on the intermediate destination of the packet and the QoS requirement of the packet and is independent of the end system from which the packet originates and the switching node switches packets from the end users to the intermediate destinations using only the primary label.

摘要翻译： 一种具有多址段（2,48）的通信系统，包括多个终端系统（6,44）和交换节点（4,46），其被配置为使得每个端系统可以向交换节点发送分组， 交换节点可以发送由所有终端系统接收的分组。 交换节点包括用于将来自终端系统的分组切换到系统内的中间目的地的交换机（5,47），并且MA分段根据提供由终端系统请求的服务质量的协议来操作所发送的分组 在段上。 交换节点包括用于对主要标签取决于分组的中间目的地和分组的QoS要求并且独立于终端系统的整个MA段上的终端系统发送的分组的主标签路由信息进行整理的装置 分组来自哪个，并且交换节点仅使用主标签将分组从最终用户切换到中间目的地。

公开(公告)号：US07343399B2

公开(公告)日：2008-03-11

申请号：US09888730

申请日：2001-06-25

申请人： Clive Hayball ,  Nigel Bragg ,  Gordon Bradley ,  Martin Biddiscombe ,  Julian Cable ,  Philip Davies

发明人： Clive Hayball ,  Nigel Bragg ,  Gordon Bradley ,  Martin Biddiscombe ,  Julian Cable ,  Philip Davies

IPC分类号： G06F15/16

CPC分类号： H04L29/06 ,  H04L67/1002 ,  H04L67/1008 ,  H04L67/101 ,  H04L67/1012 ,  H04L67/1021 ,  H04L67/1023 ,  H04L67/1029 ,  H04L67/1038 ,  H04L2029/06054

摘要： DNS in its native form cannot identify a good or best server. Traditional Service Providers deploy a centralised approach to global traffic management based on enhancements to DNS, but do have the capability to augment this with edge-based server selection because they do not own/operate an edge network. Their resolution of DNS requests is typically restricted to identifying candidate servers within an edge domain rather than selecting the “best” server. The invention proposes a method of handling Internet resource requests whereby a local lookup server receiving a request searches for a best server able to satisfy the resource request. The local lookup server finds the best server by searching a database for a resource record associated with the best server, and then uses the resource record to retrieve an identifier of a series of executable instructions that are executed to locate the best server. The resource requests and responses may hold additional information relating to operational characteristics which may used to determine the best server. The invention proposes a DNS record type comprising a user-defined field for conveying this additional information in the resource request and in the response. The invention also proposes architecture for handling the resource request comprising a network server that provides the requested resource using the best server, as well as a communications network comprising this architecture.

摘要翻译： 其本机形式的DNS无法识别一个好的或最好的服务器。 传统服务提供商基于DNS的增强功能部署了全球流量管理的集中式方法，但确实有能力通过基于边缘的服务器选择进行扩展，因为它们不拥有/操作边缘网络。 他们对DNS请求的解决通常仅限于识别边缘域内的候选服务器，而不是选择“最佳”服务器。 本发明提出了一种处理因特网资源请求的方法，由此接收请求的本地查找服务器搜索能够满足资源请求的最佳服务器。 本地查找服务器通过搜索数据库找到与最佳服务器相关联的资源记录来找到最佳服务器，然后使用资源记录来检索执行以确定最佳服务器的一系列可执行指令的标识符。 资源请求和响应可以存储与可用于确定最佳服务器的操作特性相关的附加信息。 本发明提出了一种DNS记录类型，其包括用户定义字段，用于在资源请求和响应中传达该附加信息。 本发明还提出了用于处理资源请求的架构，其包括使用最佳服务器提供所请求资源的网络服务器，以及包括该架构的通信网络。

公开(公告)号：US06970461B2

公开(公告)日：2005-11-29

申请号：US09725360

申请日：2000-11-29

申请人： Brian Unitt ,  Michael Grant ,  Julian Cable ,  Lou Pino

发明人： Brian Unitt ,  Michael Grant ,  Julian Cable ,  Lou Pino

IPC分类号： H04L12/18 ,  H04L12/44 ,  H04L12/56 ,  H04L29/06 ,  H04N7/173 ,  H04N21/2543 ,  H04N21/266 ,  H04N21/454 ,  H04N21/462 ,  H04N21/4782 ,  H04N21/6405 ,  H04N21/643 ,  H04L12/26

CPC分类号： H04L63/101 ,  H04L12/185 ,  H04L12/1859 ,  H04L47/15 ,  H04L47/70 ,  H04L47/788 ,  H04L47/805 ,  H04L47/806 ,  H04L47/808 ,  H04N7/17309 ,  H04N21/2543 ,  H04N21/266 ,  H04N21/4542 ,  H04N21/4622 ,  H04N21/4782 ,  H04N21/6405 ,  H04N21/64322

摘要： A method of providing secure multicast over a local access network by means of a network access unit having a channel request vetting function and a permitted channel list. Channel requests from a subscriber are vetted with respect to the permitted channel list and forwarded only if permitted. The permitted list may be dynamically updated under headend control to allow users to subscribe to, and unsubscribe from, services upon request.

摘要翻译： 一种通过具有信道请求审查功能和允许频道列表的网络接入单元通过本地接入网络提供安全组播的方法。 来自用户的频道请求将针对允许的频道列表进行审查，只有在允许的情况下转发。 允许的列表可以在头端控制下动态更新，以允许用户根据请求订阅并取消订阅服务。

公开(公告)号：US06763005B1

公开(公告)日：2004-07-13

申请号：US09410314

申请日：1999-10-01

申请人： Serge Halberstadt ,  Catherine Rosenberg ,  Julian Cable ,  Adrian Winckles

发明人： Serge Halberstadt ,  Catherine Rosenberg ,  Julian Cable ,  Adrian Winckles

IPC分类号： H04B7185

CPC分类号： H04B7/18584

摘要： In a satellite communications system comprising a plurality of access units X communicating with a satellite S on an up-link U and a broadcast downlink B and a plurality of gateways E to and from a network N, wherein each gateway E receives from the satellite S transmissions communicated thereto by the access units X and intended for destinations in the network N, a method of routing transmissions including a gateway E concluding that a transmission received should follow an alternative route via one of the other gateways E, sending an alternative route message to the satellite S which forwards the message using the broadcast downlink B to a plurality of the source gateways E in the system.

摘要翻译： 在包括与上行链路U的卫星S和广播下行链路B以及来自网络N的多个网关E通信的多个接入单元X的卫星通信系统中，每个网关E从卫星S 由接入单元X传送并且用于网络N中的目的地的传输，包括网关E的路由传输的方法，其结论是接收到的传输应该经由其他网关E之一遵循替代路由，发送替代路由消息到 使用广播下行链路B将消息转发到系统中的多个源网关E的卫星S。

公开(公告)号：US06549530B1

公开(公告)日：2003-04-15

申请号：US09305633

申请日：1999-05-05

申请人： Julian Cable ,  Catherine Rosenberg ,  Hosame Hassan Abu-Amara ,  Alessandro Minato

发明人： Julian Cable ,  Catherine Rosenberg ,  Hosame Hassan Abu-Amara ,  Alessandro Minato

IPC分类号： H04B7212

CPC分类号： H04B7/18584

摘要： A multiple access asynchronous network segment for providing network access to a plurality of end systems over a shared medium uplink to a satellite headend supported by a network controller, wherein the network controller allocates part of the uplink resource and the satellite headend allocates part of the uplink resource on a temporary basis in response to end systems making a new request for uplink resource. Also provided is a signalling system for use in a multiple access asynchronous network segment for providing network access to a plurality of end systems over a shared medium uplink to an intermediate. Also provided is an Integrated Addressing and packet Segmentation And Reassembly (IASAR) system for use in a multiple access asynchronous network segment for providing network access for a plurality of end systems to an intermediate system over a shared medium.

摘要翻译： 一种多址异步网段，用于通过在由网络控制器支持的卫星头端上行链路的共享介质上提供对多个终端系统的网络接入，其中所述网络控制器分配所述上行链路资源的一部分，并且所述卫星前端分配所述上行链路的一部分 资源在临时的基础上响应终端系统对上行资源的新请求。 还提供了一种用于在多访问异步网段中用于通过上行链路到中间体的共享介质提供到多个终端系统的网络接入的信令系统。 还提供了一种用于多访问异步网段的集成寻址和分组分段和重组（IASAR）系统，用于通过共享介质向中间系统提供多个终端系统的网络访问。