公开(公告)号：US06832087B2

公开(公告)日：2004-12-14

申请号：US10185344

申请日：2002-06-28

申请人： Youngjune Gwon ,  Daichi Funato ,  Guangrui Fu ,  Atsushi Takeshita

发明人： Youngjune Gwon ,  Daichi Funato ,  Guangrui Fu ,  Atsushi Takeshita

IPC分类号： H04Q720

CPC分类号： H04L63/164 ,  H04W36/0011 ,  H04W36/0016 ,  H04W36/08 ,  H04W36/12 ,  H04W36/14 ,  H04W80/04

摘要： The present invention provides a tunnel-based IP handoff process that can minimize the handoff latency associated with the standard Mobile IP registration. In the present invention, when neighboring nodes are detected, these detected nodes are identified as candidate nodes. Detection of just the existence of neighboring nodes should be possible even in situations where these neighboring nodes use different access technologies. For instance, pilot beacon signals may be taken as indication of the existence of candidate nodes although it may be impossible to compare them quantitatively if the beacon signals emanate from different access technologies. As soon as candidate nodes are identified, tunnels are established between the source node and the candidate nodes. The tunnels are used to forward data to the mobile node after a communication link between the mobile node and the source node goes down. As soon as the mobile node enters one of the neighboring networks and identifies a target node, the tunnels are torn down except the tunnel for the target node.

摘要翻译： 本发明提供了一种基于隧道的IP切换过程，其可以将与标准移动IP注册相关联的切换延迟最小化。 在本发明中，当检测到相邻节点时，将这些检测到的节点标识为候选节点。 即使在这些相邻节点使用不同的接入技术的情况下，也只能检测相邻节点的存在。 例如，可以将导频信标信号作为候选节点的存在的指示，但是如果信标信号来自不同的接入技术，则可能不可能定量比较它们。 一旦识别候选节点，就在源节点和候选节点之间建立隧道。 隧道用于在移动节点和源节点之间的通信链路关闭之后将数据转发到移动节点。 一旦移动节点进入相邻网络之一并识别目标节点，除了目标节点的隧道之外，隧道也被拆除。

公开(公告)号：US07206579B2

公开(公告)日：2007-04-17

申请号：US10184360

申请日：2002-06-27

申请人： Youngjune Gwon ,  Daichi Funato ,  Guangrui Fu ,  Atsushi Takeshita

发明人： Youngjune Gwon ,  Daichi Funato ,  Guangrui Fu ,  Atsushi Takeshita

IPC分类号： H04Q7/20 ,  H04Q7/00 ,  H04J3/16

CPC分类号： H04W36/30 ,  H04W36/14

摘要： A method and system for providing an adaptive IP handoff triggering system for a wireless communication system that consists of either the same or heterogeneous wireless access technologies. A mobile node is notified of at least one pre-trigger timing parameter by a current access network. At least one variable handoff threshold is constructed with the mobile node based on the at least one pre-trigger timing parameter. An IP handoff is then initiated to a candidate access network when pilot beacon signal strength of the mobile node reaches the variable handoff threshold.

摘要翻译： 一种用于为由相同或异构无线接入技术组成的无线通信系统提供自适应IP切换触发系统的方法和系统。 通过当前接入网络向移动节点通知至少一个预触发定时参数。 基于至少一个预触发定时参数，利用移动节点构建至少一个可变切换阈值。 然后当移动节点的导频信标信号强度达到可变切换阈值时，向候选接入网络发起IP切换。