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    • 12. 发明申请
    • NODE FAILURE DETECTION SYSTEM AND METHOD FOR SIP SESSIONS IN COMMUNICATION NETWORKS
    • 通信网络中SIP会话的节点故障检测系统和方法
    • US20100223492A1
    • 2010-09-02
    • US12690200
    • 2010-01-20
    • Maria FarrugiaMarco SturaMaurizio Monti
    • Maria FarrugiaMarco SturaMaurizio Monti
    • G06F11/07
    • H04L65/1016H04L65/1006H04L65/80H04L69/40
    • The present invention relates to a failure detection method and system operating at the session control layer, preferably within an IMS/SIP architecture, which monitors the status of an adjacent node with the aid of a timer mechanism that sets a heartbeat rate associated with that adjacent node. Monitoring of a communication session takes place by monitoring the liveliness of the nodes handling the session.According to some embodiments, SIP traffic within an on-going communication session is used to determine whether an adjacent node is alive. Failure to receive a SIP message from an adjacent node within a given heartbeat rate starts a polling process to decide whether the adjacent node is in a faulty status. In the affirmative, i.e. upon decision that the adjacent node is in a faulty status, the polling node closes the communication session so that any further billing is prevented.According to some other embodiments, when a transport connection has been established between two adjacent SIP nodes, the node that has initiated the connection starts a polling process for monitoring the liveliness of the adjacent node. The polling process comprises the step of sending a first polling message requesting the adjacent node to initialise a timer with a heartbeat rate proposed by the initiating node or agreed between the two nodes. Initialisation of the timer triggers in the adjacent node the response to the polling message. Failure to receive an acknowledgement message from an adjacent node within a given heartbeat rate determines one or more actions in the initiating node aimed at the decision of a faulty status of the adjacent node. Upon decision that the adjacent node is in a faulty status, the initiating node closes the communication session so that any further billing is prevented.
    • 本发明涉及一种故障检测方法和系统,优选地在IMS / SIP体系结构中的会话控制层上操作,该监视方法和系统借助定时器机制来监视相邻节点的状态,定时器机构设置与该相邻节点相关联的心跳速率 节点。 通过监视处理会话的节点的活跃性来监视通信会话。 根据一些实施例,正在进行的通信会话中的SIP业务被用于确定相邻节点是否存活。 在给定的心跳速率范围内不能从相邻节点接收SIP消息开始轮询过程以确定相邻节点是否处于故障状态。 肯定地,即在判定相邻节点处于故障状态时,轮询节点关闭通信会话,从而防止任何进一步的计费。 根据一些其他实施例,当在两个相邻SIP节点之间建立了传输连接时,已经启动该连接的节点开始轮询过程以监视相邻节点的活力。 轮询过程包括以下步骤:发送第一轮询消息,请求相邻节点用起始节点提出的心跳速率初始化定时器,或在两个节点之间约定。 定时器的初始化触发相邻节点对轮询消息的响应。 在给定的心跳速率范围内不能从相邻节点接收确认消息确定起始节点中的一个或多个动作,以针对相邻节点的故障状态的判定。 在确定相邻节点处于故障状态时,发起节点关闭通信会话,以防止任何进一步的计费。
    • 15. 发明申请
    • METHOD AND SYSTEM FOR CONTROLLING CALL ADMISSION IN IMS
    • 用于控制IMS中的呼叫接收的方法和系统
    • US20100220703A1
    • 2010-09-02
    • US12713684
    • 2010-02-26
    • Maria FarrugiaMarco SturaMaurizio Monti
    • Maria FarrugiaMarco SturaMaurizio Monti
    • H04W4/00
    • H04L65/1016H04L65/80
    • A method and a system for controlling call admission for parallel ringing processes to a realm in an IMS is disclosed. The method comprises receiving a call control message to a called party, determining whether the called party has parallel ringing enabled, if positive, generating a plurality of parallel call control messages, associating to each parallel call control message a parallel ringing identifier indicating that the corresponding call control message is a parallel call control message, receiving a plurality of call control messages directed towards the realm, performing call admission control for this realm by verifying whether a parallel ringing identifier is associated to each call control message directed towards this realm so as to determine if the call control message is a parallel call control message.
    • 公开了一种用于控制IMS中的领域的并行振铃处理的呼叫准入的方法和系统。 所述方法包括:向被叫方接收呼叫控制消息,确定所述被叫方是否启用了并行振铃,如果为正,则产生多个并行呼叫控制消息,将每个并行呼叫控制消息相关联,指示相应的并行振铃标识符 呼叫控制消息是并行呼叫控制消息,接收指向该领域的多个呼叫控制消息,通过验证是否将并行振铃标识符与针对该领域的每个呼叫控制消息相关联来执行该领域的呼叫接纳控制,以便 确定呼叫控制消息是否是并行呼叫控制消息。