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    • 77. 发明申请
    • METHOD, SYSTEM AND DEVICE FOR CALLED PARTY RECOVERY IN MOBILE SWITCH CENTER POOL
    • 方法,系统和设备,用于移动开关中心池中的呼叫方恢复
    • US20090209252A1
    • 2009-08-20
    • US12401419
    • 2009-03-10
    • Runsheng HanHao ZhangXiaochun CuiSihai Ye
    • Runsheng HanHao ZhangXiaochun CuiSihai Ye
    • H04W4/00
    • H04W8/04H04L69/40H04W8/06H04W24/08H04W88/14
    • A method for called party recovery in an MSC Pool, applied in a system that comprises an HLR and an MSC Pool including multiple MSC/VLRs, includes configuring a backup server for each MSC/VLR in the MSC Pool; if an MSC/VLR serving a user is down, the user has not initiated any calling service or location update and the user is called, further includes: the HLR sending a call signaling to the backup server of the MSC/VLR that is down; the backup server of the MSC/VLR initiating a paging request to the user and initiating a location update for the user to the HLR; the HLR registering user data of the user at the backup server and switching the MSC/VLR serving the user to the backup server. The present invention also discloses other methods, systems and devices, which can solve the problem of called party recovery in the MSC Pool.
    • 一种应用于包括HLR的系统中的MSC Pool中的被叫方恢复方法和包括多个MSC / VLR的MSC Pool,包括为MSC Pool中的每个MSC / VLR配置备份服务器; 如果为用户服务的MSC / VLR关闭,则用户没有发起任何呼叫服务或位置更新,并且用户被呼叫,还包括:HLR向正在关闭的MSC / VLR的备份服务器发送呼叫信令; MSC / VLR的备份服务器向用户发起寻呼请求,并向HLR发起用户的位置更新; HLR在备份服务器上注册用户的用户数据,并将服务用户的MSC / VLR切换到备份服务器。 本发明还公开了可以解决MSC Pool中被叫方恢复问题的其他方法,系统和设备。
    • 79. 发明申请
    • Single-ended to differential duplexer filter
    • 单端到差分双工器滤波器
    • US20080101263A1
    • 2008-05-01
    • US11801446
    • 2007-05-10
    • Bradley Paul BarberHao Zhang
    • Bradley Paul BarberHao Zhang
    • H04B1/69
    • H04B1/52H04B1/71
    • According to an exemplary embodiment, a duplexer includes a single-ended to differential filter, where the single-ended to differential filter includes a ladder stage coupled to an antenna port of the duplexer. The single-ended to differential filter further includes a balun stage coupled to the ladder stage. The single-ended to differential filter further includes a lattice stage coupled to the balun stage, where the balun stage is configured to provide single-ended to differential signal conversion between the ladder stage and the lattice stage. The lattice stage can be coupled to differential receive ports of the duplexer. The duplexer can further include a single-ended to single-ended filter coupled between the antenna port and a transmit port of the duplexer.
    • 根据示例性实施例,双工器包括单端到差分滤波器,其中单端到差分滤波器包括耦合到双工器的天线端口的梯级。 单端到差分滤波器还包括耦合到梯级的平衡 - 不平衡转换级。 单端到差分滤波器还包括耦合到平衡 - 不平衡变换级的晶格级,其中平衡 - 不平衡变换级被配置为在梯级和晶格级之间提供单端到差分信号转换。 晶格级可以耦合到双工器的差分接收端口。 双工器还可以包括耦合在天线端口和双工器的发送端口之间的单端到单端滤波器。