公开(公告)号：US20040028009A1

公开(公告)日：2004-02-12

申请号：US10212942

申请日：2002-08-06

Applicant: MOTOROLA, INC.

Inventor： Jheroen P. Dorenbosch ,  Richard L. Bennett ,  David L. Raymer

IPC: H04L012/28 ,  H04L012/56

CPC classification number: H04L69/169 ,  H04L69/16 ,  H04W36/0011 ,  H04W36/18 ,  H04W80/06 ,  H04W88/16

Abstract: A method 900 of and apparatus for effecting a handoff from a first Internet Protocol (IP) connection 221 to a second IP connection 331 is disclosed. The method includes: communicating a packet data communication between a first station and a gateway (either acting as an application level gateway or as and endpoint for an SCTP tunnel) using the first IP connection and a first IP address for the first station, the gateway relaying the packet data communication with a second station; setting up the second IP connection with a second IP address for the first station, the first IP connection being a primary connection and the second IP connection being a secondary connection between the first station and the gateway, the first and the second IP connection existing concurrently; determining that the second IP connection should be the primary connection between the first station and the gateway; and changing the second IP connection to the primary connection by informing the gateway that the second IP address is the primary address using stream control transmission protocol (SCTP) messages, wherein the packet data communication is immediately switched over to the second IP connection.

Abstract translation: 公开了一种用于实现从第一互联网协议（IP）连接221到第二IP连接331的切换的方法900和装置。 该方法包括：使用第一IP连接和第一站的第一IP地址来传送第一站和网关之间的分组数据通信（用作应用级网关，或作为SCTP隧道的端点），网关 中继与第二站的分组数据通信; 用第一站的第二IP地址设置第二IP连接，第一IP连接是主连接，第二IP连接是第一站与网关之间的次连接，第一和第二IP连接同时存在 ; 确定第二IP连接应该是第一站和网关之间的主要连接; 并且通过使用流控制传输协议（SCTP）消息通知网关第二IP地址是主地址，将第二IP连接改变为主连接，其中分组数据通信立即切换到第二IP连接。