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    • 6. 发明授权
    • Method for establishing a MIP and performing handoff by a mobile node
    • 用于建立MIP并由移动节点执行切换的方法
    • US07463606B2
    • 2008-12-09
    • US11098906
    • 2005-04-04
    • Jae Hong RyuWon RyuSoon Choul KimDong Won Kim
    • Jae Hong RyuWon RyuSoon Choul KimDong Won Kim
    • H04Q7/00
    • H04W36/12H04W80/00
    • A method for supporting handoff and preventing data loss in mobile communications networks is provided. The method for a mobile node establishing a mobile Internet protocol (MIP) with at least one or more wireless packet service systems, each of which has a serving GPRS support node (SGSN) and a gateway GPRS support node (GGSN), includes: a first SGSN connected to the mobile node transmitting predetermined first connection information on the mobile node to at least one or more second SGSNs adjacent to the first SGSN; the second SGSN receiving the first connection information storing the first connection information as a database item, and transmitting 1 first connection acknowledgement message to the first SGSN; if reception of the connection acknowledgement message is successful, the first GGSN connected to the first SGSN transmitting predetermined second connection information on the mobile node to at least one or more second GGSNs connected to the second SGSN; and the second GGSN receiving the second connection information and then transmitting a second connection acknowledgement message to the second GGSN. By transmitting information on a mobile node required for handoff to adjacent foreign agents (FAs) in advance, when handoff is performed, reliable handoff can be performed quickly without resetting and releasing a PPP, such that IP mobility services can be provided.
    • 提供了一种支持切换和防止移动通信网络中的数据丢失的方法。 移动节点建立具有至少一个或多个无线分组业务系统的移动节点(MIP)的方法,每个无线分组业务系统具有服务GPRS支持节点(SGSN)和网关GPRS支持节点(GGSN),包括: 连接到所述移动节点的第一SGSN将所述移动节点上的预定的第一连接信息发送到与所述第一SGSN相邻的至少一个或多个第二SGSN; 第二SGSN接收存储第一连接信息的第一连接信息作为数据库项,并向第一SGSN发送第一连接确认消息; 如果连接确认消息的接收成功,则连接到第一SGSN的第一GGSN将移动节点上的预定第二连接信息发送到连接到第二SGSN的至少一个或多个第二GGSN; 并且第二GGSN接收第二连接信息,然后向第二GGSN发送第二连接确认消息。 通过事先向相邻的外部代理(FA)发送切换所需的移动节点上的信息,在执行切换时,可以快速地执行可靠的切换,而无需重新设置和释放PPP,从而可以提供IP移动业务。