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    • 1. 发明申请
    • GATEWAY APPARATUS
    • 网关设备
    • US20090049180A1
    • 2009-02-19
    • US12184352
    • 2008-08-01
    • Nami EIHirofumi MasukawaHitoshi YoshidaKazuma Yumoto
    • Nami EIHirofumi MasukawaHitoshi YoshidaKazuma Yumoto
    • G06F15/16
    • H04L67/14H04L67/02H04L67/28
    • Even when all of usable sessions are in use, a communication can be established for a new session and the interrupted session is automatically restored. Information on degrees of importance of communication sessions and information of restoration requirement are set in advance and stored in a session importance table in association with identifier (URI) of communication initiating terminals and identifier of destinations of communication. When a connection request for a session having a high degree of importance such as an emergency session is received, the session having the lowest degree of importance is selected and interrupted. Information of the interrupted session such as the communication initiator identifier and the communication destination identifier is stored in a session restoration table. The session is automatically restored as soon as a session resource becomes unoccupied according to the communication initiator identifier and the communication destination identifier stored in the session restoration table.
    • 即使所有可用会话都在使用中,可以为新会话建立通信,并且中断的会话被自动恢复。 与通信发起终端的标识符(URI)和通信目的地的标识符相关联地,预先设置关于通信会话的重要性和恢复要求的信息的信息,并存储在会话重要性表中。 当接收到诸如紧急会话之类的具有高度重要性的会话的连接请求时,选择和中断具有最低重要度的会话。 诸如通信发起者标识符和通信目的地标识符的中断会话的信息被存储在会话恢复表中。 一旦会话资源根据通信发起者标识符和存储在会话恢复表中的通信目的地标识符未被占用,会话被自动恢复。
    • 4. 发明申请
    • NETWORK SYSTEM, NODE DEVICE AND MANAGEMENT SERVER
    • 网络系统,节点设备和管理服务器
    • US20080225731A1
    • 2008-09-18
    • US11964210
    • 2007-12-26
    • Takuro MoriKazuma YumotoHitoshi Yoshida
    • Takuro MoriKazuma YumotoHitoshi Yoshida
    • G06F11/00
    • H04L47/10H04L47/11H04L47/283
    • Erroneous detection of a failure in spite of the absence of failure on the route on account of a communication delay is to be prevented. A node device detects a failure on the route to a remote node device is detected by a failure to receive a packet from the remote node device after the elapse of a determined detection time. The node device sets “remote system transmission interval x detection multiplier” to be a first detecting time on the basis of a packet transmission interval determined by negotiation with the remote node device. It also sets the sum of “remote system actual transmission interval x detection multiplier” and “tolerable delay time” to be a second detecting time. The first detecting time and the second detecting time are compared, and what is longer is determined as the detecting time to be applied to actual operation.
    • 考虑到由于通信延迟而导致路由不存在故障,故障的错误检测是可以防止的。 在经过确定的检测时间之后,通过从远程节点设备接收到分组的故障来检测节点设备检测到到远程节点设备的路由的故障。 基于通过与远程节点设备协商确定的分组传输间隔,节点设备将“远程系统传输间隔x检测乘数”设置为第一检测时间。 它还将“远程系统实际传输间隔x检测乘数”和“容忍延迟时间”的和设置为第二检测时间。 比较第一检测时间和第二检测时间,将更长的时间确定为要应用于实际操作的检测时间。
    • 5. 发明授权
    • Network system, node device and management server
    • 网络系统,节点设备和管理服务器
    • US07801051B2
    • 2010-09-21
    • US11964210
    • 2007-12-26
    • Takuro MoriKazuma YumotoHitoshi Yoshida
    • Takuro MoriKazuma YumotoHitoshi Yoshida
    • H04J3/14G06F11/00
    • H04L47/10H04L47/11H04L47/283
    • Erroneous detection of a failure in spite of the absence of failure on the route on account of a communication delay is to be prevented. A node device detects a failure on the route to a remote node device is detected by a failure to receive a packet from the remote node device after the elapse of a determined detection time. The node device sets “remote system transmission interval×detection multiplier” to be a first detecting time on the basis of a packet transmission interval determined by negotiation with the remote node device. It also sets the sum of “remote system actual transmission interval ×detection multiplier” and “tolerable delay time” to be a second detecting time. The first detecting time and the second detecting time are compared, and what is longer is determined as the detecting time to be applied to actual operation.
    • 考虑到由于通信延迟而导致路由不存在故障,故障的错误检测是可以防止的。 在经过确定的检测时间之后,通过从远程节点设备接收到分组的故障来检测节点设备检测到到远程节点设备的路由的故障。 节点设备基于通过与远程节点设备协商确定的分组传输间隔将“远程系统传输间隔×检测乘数”设置为第一检测时间。 它还将“远程系统实际发送间隔×检测乘数”和“可容忍延迟时间”的和设置为第二检测时间。 比较第一检测时间和第二检测时间,将更长的时间确定为要应用于实际操作的检测时间。