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    • 22. 发明申请
    • DATA FORWARDING METHOD AND SYSTEM FOR VERTICAL HANDOVER
    • 用于垂直切换的数据转发方法和系统
    • US20110211559A1
    • 2011-09-01
    • US13127095
    • 2009-10-29
    • Chae Gwon LimTae Sun YeoumSung Ho ChoiJong Moon ChungWilliam Jin Ho SongDae Young Lee
    • Chae Gwon LimTae Sun YeoumSung Ho ChoiJong Moon ChungWilliam Jin Ho SongDae Young Lee
    • H04W36/00
    • H04W36/02
    • A data forwarding method and system is provided for avoiding data loss during a vertical handover by forwarding data through an IP tunnel established between a newly introduced network entity called a Data Forwarding Function of the serving network and a Forward Attachment Function of a target network. A data forwarding method of a data forwarding unit located in a serving network for a vertical handover according to the present invention includes receiving an address of a forwarding attachment unit located in a target network and a data forwarding preparation request that are transmitted by a user equipment; establishing an Internet Protocol (IP) tunnel to the forwarding attachment unit according to the data forwarding preparation request; and forwarding, when a vertical handover is initiated, handover packets to the forwarding attachment unit through the IP tunnel.
    • 提供了一种数据转发方法和系统,用于通过在称为服务网络的数据转发功能的新引入的网络实体和目标网络的前向附着功能之间建立的IP隧道转发数据来避免垂直切换期间的数据丢失。 根据本发明的位于垂直切换的服务网络中的数据转发单元的数据转发方法包括:接收由用户设备发送的目标网络中的转发附加单元的地址和数据转发准备请求 ; 根据数据转发准备请求建立到转发附件单元的因特网协议(IP)隧道; 并且当发起垂直切换时,转发通过IP隧道将切换分组转发到转发附着单元。
    • 24. 发明申请
    • SECURITY SYSTEM AND METHOD FOR WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统的安全系统和方法
    • US20100115275A1
    • 2010-05-06
    • US12609410
    • 2009-10-30
    • Kyung Joo SUHKyeong In JEONGChae Gwon LIM
    • Kyung Joo SUHKyeong In JEONGChae Gwon LIM
    • H04L9/00H04K1/00H04L9/28
    • H04W12/08H04L63/164H04L63/205
    • A security system processing method of a User Equipment (UE) and a security system for a wireless communication system are provided. The security processing method of the UE includes transmitting a Layer 3 message including a UE security capability to a Mobility Management Entity (MME) and the eNB, receiving a Access Stratum Security Mode Command (AS SMC) including a AS security algorithm selected by the eNB, as a result of verification of the UE security capability and information received from the MME, and a AS Message Authentication Code (MAC), transmitting a AS security mode complete message including the AS SMC to the eNB after verification of integrity of the AS SMC using the AS MAC, and transmitting, when receiving a Non Access Stratum (NAS) SMC including the UE security capability, a NAS security mode complete message to the MME after verification of integrity of the NAS SMC.
    • 提供了用户设备(UE)和无线通信系统的安全系统的安全系统处理方法。 UE的安全处理方法包括向移动性管理实体(MME)和eNB发送包括UE安全能力的第3层消息,接收包括eNB选择的AS安全算法的接入层安全模式命令(AS SMC) 作为UE的安全能力验证和从MME接收的信息的结果,以及AS消息认证码(MAC),在验证AS SMC的完整性之后,向eNB发送包括AS SMC的AS安全模式完成消息 使用AS MAC,并且在验证NAS SMC的完整性之后,向MME接收到包含UE安全能力的非接入层(NAS)SMC的NAS安全模式完成消息。
    • 25. 发明申请
    • COMMUNICATION SYSTEM AND DATA TRANSMISSION METHOD THEREOF
    • 通信系统及其数据传输方法
    • US20100111041A1
    • 2010-05-06
    • US12608658
    • 2009-10-29
    • Chae Gwon LIMSung Ho CHOIHyoung Kyu LIMTae Sun YEOUMEun Hui BAE
    • Chae Gwon LIMSung Ho CHOIHyoung Kyu LIMTae Sun YEOUMEun Hui BAE
    • H04W36/00
    • H04W36/02
    • A communication system and data transmission method thereof are provided. The method includes adding an end marker to the end of source data and transmitting the source data and the end marker for a Packet data network GateWay (PGW) to a source evolved Node B (eNB) if a handover is carried out from the source eNB to a target eNB while the PGW is transmitting the source data to the source eNB, forwarding the source data and the end marker from the source eNB to the target eNB, transmitting target data immediately following the source data from the PGW to the target eNB, and transmitting the source data and the target data, which is classified into the source data by the end marker and immediately follows the end of the source data, from the target eNB to user equipment.
    • 提供了一种通信系统及其数据传输方法。 该方法包括:如果从源eNB执行切换,则向源数据的末尾添加结束标记,并将源数据和分组数据网络GateWay(PGW)的结束标记发送到源演进节点B(eNB) 在PGW向源eNB发送源数据的同时,将源数据和结束标记从源eNB转发到目标eNB,将来自PGW的源数据紧随其后的目标数据发送到目标eNB, 并且从目标eNB向用户设备发送源数据和目标数据,该数据和目标数据由终端标记分类为源数据,并且紧随着源数据结束。
    • 30. 发明授权
    • Communication system for handover to femto base station and method for the same
    • 用于切换到毫微微基站的通信系统及其方法
    • US09414275B2
    • 2016-08-09
    • US13120778
    • 2009-09-21
    • Eun Hui BaeChae Gwon LimSung Ho ChoiTae Sun Yeoum
    • Eun Hui BaeChae Gwon LimSung Ho ChoiTae Sun Yeoum
    • H04W36/30H04W36/04H04W36/00H04W84/04
    • H04W36/04H04W36/0061H04W84/045
    • A wireless communication system for performing a handover to a femto base station is provided. The system includes user equipment, a femto subscriber information storage, a core network entity or a macro base station or a serving base station. The femto subscriber information storage stores a list of femto base stations that allows the access of user equipment, i.e., an accessible list. The core network entity or the macro base station receives and stores the accessible list. When any of the user equipment requests a handover toward a femto base station as a target base station, and the target base station is included in the accessible list stored, the core network entity or the macro base station requests a handover toward the target base station. A method for performing a handover to the core network entity and the macro base station is also provided.
    • 提供了一种用于执行到毫微微基站的切换的无线通信系统。 该系统包括用户设备,毫微微用户信息存储,核心网络实体或宏基站或服务基站。 毫微微用户信息存储器存储允许访问用户设备的毫微微基站的列表,即可访问列表。 核心网络实体或宏基站接收并存储可访问列表。 当任何用户设备请求作为目标基站的毫微微基站切换,并且目标基站包括在存储的可访问列表中时,核心网络实体或宏基站向目标基站请求切换 。 还提供了用于执行到核心网络实体和宏基站的切换的方法。