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    • 2. 发明申请
    • HARD HANDOFF FROM A WIRELESS LOCAL AREA NETWORK TO A CELLULAR TELEPHONE NETWORK
    • 从无线本地区网络到蜂窝电话网络的硬切换
    • WO2007028028A1
    • 2007-03-08
    • PCT/US2006/034247
    • 2006-09-01
    • QUALCOMM INCORPORATEDYACOBI, EitanKEIDAR, RonZREIQ, Samer, S.RIMONI, Yoram
    • YACOBI, EitanKEIDAR, RonZREIQ, Samer, S.RIMONI, Yoram
    • H04Q7/38
    • H04W36/0066
    • A system and a method are provided for supporting a hard handoff procedure for a call from a wireless local area network (WLAN) to a cellular telephone network. The method includes: establishing a link between a user terminal (UT) and a serving WLAN, and a call via the WLAN link; simultaneously monitoring a serving cellular telephone network; forwarding information identifying the UT within the cellular network, to the serving WLAN; in response to losing the link with the serving WLAN, performing a hard handoff to the cellular network; and, continuing the call via the cellular network. Generally, the hard handoff can be performed if the WLAN is able to communicate the UT's identity to the cellular telephone, as the UT's position can be determined by the cellular network. The hard handoff is performed with the UT receiving resource allocations in a common control channeLmessage, such as a Short Message Ser vice (SMS) or paging message.
    • 提供了一种用于支持从无线局域网(WLAN)到蜂窝电话网络的呼叫的硬切换过程的系统和方法。 该方法包括:建立用户终端(UT)和服务WLAN之间的链路,以及经由WLAN链路的呼叫; 同时监视服务蜂窝电话网络; 将标识蜂窝网络内的UT的信息转发到服务WLAN; 响应于丢失与服务WLAN的链路,执行到蜂窝网络的硬切换; 并且通过蜂窝网络继续呼叫。 通常,如果WLAN能够将UT的身份传送到蜂窝电话,则可以执行硬切换,因为UT的位置可以由蜂窝网络确定。 硬切换是通过UT在诸如短消息服务(SMS)或寻呼消息之类的公共控制信道消息中接收资源分配来执行的。
    • 10. 发明公开
    • USER TERMINAL-INITIATED HARD HANDOFF FROM A WIRELESS LOCAL AREA NETWORK TO A CELLULAR NETWORK
    • BY启动的用户终端,WLAN的用于移动无线网络硬切换
    • EP1935205A1
    • 2008-06-25
    • EP06816916.8
    • 2006-10-12
    • QUALCOMM Incorporated
    • RIMONI, YoramYACOBI, Eitan
    • H04Q7/38
    • H04W36/30H04L5/0058H04L47/10H04L47/70H04L47/72H04M15/8016H04M2207/18H04W36/14H04W36/18H04W36/36H04W40/20H04W48/06H04W88/06
    • A system and method are provided for supporting a multi-mode portable user terminal (UT) hard handoff procedure for a call from a wireless local area network (WLAN) to a cellular telephone network. The method includes: establishing a link between a UT and a serving WLAN; establishing a call via the established WLAN link; monitoring the WLAN link signal strength; simultaneously monitoring a serving cellular network; initiating a hard handoff to the cellular network, responsive to the monitored WLAN link signal strength falling below a minimum threshold; and, continuing the call via the cellular network. More specifically, the method initiates a call handoff to a Cellular Gateway (CGW) telephone number, responsive to the monitored WLAN link signal strength falling below the minimum threshold. Then, continuing the call via the cellular network includes continuing the call to the first telephone number via the CGW handoff telephone number.
    • 本发明提供一种系统和方法,用于支持多模式便携式用户终端(UT)硬越区切换过程,用于从无线局域网(WLAN)连接到蜂窝电话网的呼叫。 该方法包括:建立UT和服务WLAN之间的链接; 建立通过建立的WLAN连接的呼叫; 监视无线链路的信号强度; 同时监控服务蜂窝网络; 启动硬越区切换到蜂窝网络,响应于所监视的WLAN链路信号强度下降到低于最小阈值; 并且,继续通过蜂窝网络通话。 更具体地,该方法发起呼叫越区切换到一个蜂窝网关(CGW)电话号码,响应于所监视的WLAN链路信号强度下降到低于最小阈值。 然后,经由蜂窝网络继续所述呼叫包括继续进行所述呼叫经由CGW切换电话号码的第一电话号码。