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    • 4. 发明申请
    • A METHOD FOR OPERATING MULTI-DOMAIN PROVIDER ETHERNET NETWORKS
    • 一种用于操作多域提供商以太网网络的方法
    • WO2010071978A1
    • 2010-07-01
    • PCT/CA2009/001676
    • 2009-11-25
    • NORTEL NETWORKS LIMITEDCASEY, Liam
    • CASEY, Liam
    • H04L12/66H04L12/40
    • H04L63/10H04L12/2856H04L12/4633H04L12/4658H04L12/4662H04L63/02H04L63/08
    • A method of enabling extension of a network service of a first domain to a remote customer site hosted by an Access Gateway (AG) in a Provider Ethernet domain. In the first domain, the remote customer site is represented as being hosted by a border gateway (BG) connected to the Provider Ethernet domain, such that subscriber packets associated with the network service are forwarded to or from the remote customer site via the BG. In the Provider Ethernet domain, a trunk connection is instantiated through the Provider Ethernet domain between the host AG and the BG A trunk cross-connection function is installed in the host AG, for transferring subscriber packets associated with the network service between a respective attachment virtual circuit (AVC) through which the remote customer site is connected to the host AG and an extended AVC tunnelled through the trunk connection. A common service instance identifier (I-SID) is used to identity both the AVC between the host AG and the remote customer site and the extended AVC between the host AG and the BG
    • 一种能够将第一域的网络服务扩展到由提供商以太网域中的接入网关(AG)托管的远程客户站点的方法。 在第一域中,远程客户站点被表示为由连接到提供商以太网域的边界网关(BG)托管,使得与网络服务相关联的用户分组经由BG被转发到远程客户站点或从远程客户站点转发。 在提供商以太网域中,通过主机AG和BG之间的提供商以太网域实例化中继线连接在主机AG中安装中继交叉连接功能,用于将相关联的网络服务的用户分组传送到相应的附件虚拟 电路(AVC),远程客户站点通过该电路连接到主机AG,并通过中继线连接隧道扩展的AVC。 公共服务实例标识符(I-SID)用于标识主机AG和远程客户站点之间的AVC以及主机AG与BG之间的扩展AVC
    • 5. 发明申请
    • PINNING THE ROUTE OF IP BEARER FLOWS IN A NEXT GENERATION NETWORK
    • 在下一代网络中密封IP承载流的路由
    • WO2008070957A1
    • 2008-06-19
    • PCT/CA2007/002045
    • 2007-11-15
    • NORTEL NETWORKS LIMITEDCASEY, Liam
    • CASEY, Liam
    • H04L12/12H04L29/06
    • H04L65/104H04L12/14H04L12/1446H04L12/1485H04L29/125H04L45/00H04L61/2564H04L65/1016H04L65/80
    • Methods and systems for extending the IMS/SIP architecture of the NGN to provide QoS service to generic bearer flows. More particularly, a method is provided for establishing an bearer end-to-end path of a communication session in a multi-domain communication network in which an out of band signalling protocol is used to establish communications sessions. The method comprises receiving an out-of-band signalling message including information representative of at least an opposite end point of a first bearer segment of the end-to-end path. The information is used to define a cross-connect mapping through a node of the network between respective local endpoints of the first bearer segment and a second bearer segment hosted by the node. Information representative of the cross-connect mapping is then inserted into the out-of-band signalling message, and the out-of-band signalling message forwarded.
    • 用于扩展NGN的IMS / SIP架构以向通用承载流提供QoS服务的方法和系统。 更具体地,提供了一种用于在多域通信网络中建立通信会话的承载端到端路径的方法,其中使用带外信令协议来建立通信会话。 该方法包括:接收带外信令消息,该消息包括表示端对端路径的第一承载段的至少相对端点的信息。 该信息用于定义通过第一承载段的相应本地端点与由该节点托管的第二承载段之间的网络节点的交叉连接映射。 然后将代表交叉连接映射的信息插入到带外信令消息中,并且转发带外信令消息。
    • 7. 发明申请
    • SERVING GATEWAY PROXIES FOR NON-SIP SPEAKERS IN A NEXT GENERATION NETWORK
    • 为下一代网络中的非SIP语音服务器提供网关代码
    • WO2008070958A1
    • 2008-06-19
    • PCT/CA2007/002046
    • 2007-11-15
    • NORTEL NETWORKS LIMITEDCASEY, Liam
    • CASEY, Liam
    • H04L12/12H04L29/02H04L29/06
    • H04L65/1036H04L65/1006H04L65/1016H04L65/1069
    • Methods and systems for extending the IMS/SIP architecture of the NGN to provide QoS service to generic bearer flows. QoS treatment of a bearer flow destined to a non-SIP client attached to the network via an attachment segment connected to an attachment gateway is supported. A SIP-INVITE message is received in respect of the bearer flow. The SIP-INVITE message contains a Universal Resource Identifier (URI) identifying the non-SIP client as a destination of the bearer flow. An attempt is made to install a QoS policy on the attachment segment in accordance with a Traffic Specification (T-Spec) identified in the SIP-INVITE message, and the result of the installation attempt detected. A appropriate SIP messaging is generated on behalf of the non-SIP client, to either accept or refuse the bearer flow, based on the detected result.
    • 用于扩展NGN的IMS / SIP架构以向通用承载流提供QoS服务的方法和系统。 支持通过连接到附件网关的附接段来连接到网络的非SIP客户端的承载流的QoS处理。 关于承载流接收SIP-INVITE消息。 SIP-INVITE消息包含标识非SIP客户端作为承载流的目的地的通用资源标识符(URI)。 尝试根据SIP-INVITE消息中标识的流量规范(T-Spec)和检测到安装尝试的结果在附件段上安装QoS策略。 根据检测结果,代表非SIP客户端生成适当的SIP消息,以接受或拒绝承载流。
    • 8. 发明申请
    • SWITCHED PATH AGGREGATION FOR DATA CENTERS
    • 数据中心切换路径聚合
    • WO2015077878A1
    • 2015-06-04
    • PCT/CA2014/051121
    • 2014-11-25
    • ROCKSTAR CONSORTIUM US LPCASEY, Liam
    • CASEY, Liam
    • H04L12/723H04L12/28H04L12/751
    • H04L12/4633H04L12/462H04L45/50H04L45/66H04Q11/0005Y02D30/30
    • Techniques for forwarding packets across a hierarchical organization of switches constituting a network for the purpose of interconnecting a large number of client systems. The network includes at least two layers of packet switching elements, each switching element of one layer being connected to switching elements of another layer. The method may be performed by a control system which is distinct from the packet switching elements. A topology of the network is acquired, and one or more paths are calculated between a respective pairs of packet switching elements of one layer, via at least one packet switching element of another layer. Forwarding state is installed in each packet switching element traversed by a path, such that packets can be forwarded via the path. The paths are analyzed to find paths that can be aggregated, and aggregating at least two paths into a switched path aggregation group.
    • 用于在构成网络的交换机的分层组织中转发分组以用于互连大量客户端系统的技术。 该网络包括至少两层分组交换单元,一层的每个开关元件连接到另一层的开关元件。 该方法可以由与分组交换元件不同的控制系统来执行。 获取网络的拓扑,并且通过另一层的至少一个分组交换元件在一层的各个分组交换单元对之间计算一个或多个路径。 转发状态安装在由路径遍历的每个分组交换元件中,使得分组可以经由路径转发。 分析路径以查找可聚合的路径,并将至少两条路径聚合到交换路径聚合组中。
    • 9. 发明申请
    • A MECHANISM TO DIVERT AN IP FLOW OVER A NON-IP TRANSPORT
    • 通过非IP传输传播IP流的机制
    • WO2009137928A1
    • 2009-11-19
    • PCT/CA2009/000659
    • 2009-05-12
    • NORTEL NETWORKS LIMITEDCASEY, Liam
    • CASEY, Liam
    • H04L12/66H04L29/06H04N7/16
    • H04N21/4363H04L65/103H04L65/4076H04N21/64322H04N21/64707H04N21/6587
    • Session flows between a client (1) and a server (2) are pinned through a receiving interworking unit (7) and a transmitting interworking unit (11) connected via the non-IP based communications path (9). The receiving interworking unit (7) and transmitting interworking unit (11) are then configured to convert received data between IP and a non-IP based communications protocols. Subsequently, when the transmitting interworking unit (11) receives IP protocol based data for the client (1) from the server (2) the data is converted and transmitted via the non-IP based communications link to the receiving interworking unit (7). Upon receipt, the receiving interworking unit (7) converts the data back into an IP-protocol based format and forwards the converted data on to the client (1). The disclosed approach enables the client (1), to receive a regular IP packet stream from the server (2), where: one segment (9) of the path between server (2) and client (1) transports the data in a non-IP format; and neither IP client (1) nor the server (2) is aware of the non IP segment and no change in their all IP network mode of operation is required.
    • 在客户端(1)和服务器(2)之间的会话流经由经由非基于IP的通信路径(9)连接的接收互通单元(7)和传输互通单元(11)固定。 然后,接收互通单元(7)和发送互通单元(11)被配置为在IP和非基于IP的通信协议之间转换接收的数据。 随后,当发送互通单元(11)从服务器(2)接收到用于客户端(1)的基于IP协议的数据时,数据经由非基于IP的通信链路被转换和发送到接收交互单元(7)。 接收到的接收互通单元(7)将数据转换成基于IP协议的格式,并将转换的数据转发给客户端(1)。 所公开的方法使得客户端(1)能够从服务器(2)接收常规的IP分组流,其中:服务器(2)和客户端(1)之间的路径的一个段(9)以非 - -IP格式; 并且IP客户端(1)和服务器(2)都不知道非IP段,并且不需要其所有IP网络运行模式的改变。