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：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。