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    • 22. 发明申请
    • METHOD AND APPARATUS FOR CONTROLLING INTERSYSTEM HANDOVER IN A MOBILE COMMUNICATION SYSTEM
    • 用于控制移动通信系统中的物理间切换的方法和装置
    • WO2007144028A1
    • 2007-12-21
    • PCT/EP2006/063300
    • 2006-06-16
    • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)HALLENSTÅL, MagnusVIKBERG, Jari TapioNYLANDER, Tomas
    • HALLENSTÅL, MagnusVIKBERG, Jari TapioNYLANDER, Tomas
    • H04Q7/38H04L12/56
    • H04J11/0069H04W36/0022H04W36/0061
    • A method of handing over an ongoing real-time call from a current cell to a target cell belonging to one or more radio access networks, where the ongoing call was established using the services of an IP Multimedia Subsystem and is transported in the current cell over a packet switched bearer. The method comprises, at the radio access network responsible for said current cell, identifying one or more target cells for the handover, and, if a packet switched handover of the ongoing call cannot be performed to the target cell or a preferred one of the target cells, signalling to the IP Multimedia Subsystem the identity of the target cell or the preferred target cell. A handover instruction is then sent to the radio access network responsible for the target cell or the preferred target cell and a circuit switched bearer to which the ongoing call can be transferred is established within the target cell or preferred target cell.
    • 将正在进行的实时呼叫从当前小区切换到属于一个或多个无线电接入网络的目标小区的方法,其中使用IP多媒体子系统的服务建立正在进行的呼叫,并且在当前小区中传输 分组交换承载。 该方法包括在负责所述当前小区的无线电接入网络处识别用于切换的一个或多个目标小区,并且如果正在进行的呼叫的分组交换切换不能被执行到目标小区或目标小区中的优选的一个 小区,向IP多媒体子系统发信号通知目标小区或优选目标小区的身份。 然后将切换指令发送到负责目标小区或优选目标小区的无线电接入网络,并且在目标小区或优选目标小区内建立可以传送正在进行的呼叫的电路交换承载。