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    • 1. 发明授权
    • Method and apparatus for blocking forged multicast packets
    • 用于阻止伪造的组播数据包的方法和装置
    • US08270406B2
    • 2012-09-18
    • US12516229
    • 2007-10-31
    • Heuk ParkJong-Tae SongKyung-Gyu JeonSoon-Seok Lee
    • Heuk ParkJong-Tae SongKyung-Gyu JeonSoon-Seok Lee
    • H04L12/28
    • H04L63/1441H04L63/1466
    • Provided are a method and apparatus for blocking forged multicast packets. The apparatus includes input and output ports connected to user terminals; a forwarding process unit transferring a frame input through one of the input ports to one of the output ports connected to a user terminal having a destination address; a determination unit determining an address of a user terminal connected to one of the input ports from a source address included in the frame; a filtering database storing information on the output port connected to the user terminal having the destination address of the frame based on information received from the determination unit; a multicast gate information unit including information on multicast media access control (MAC) addresses of frames providing a monodirectional multicast service and blocking or forwarding all frames having a corresponding multicast MAC address as the destination address by checking whether the input and output ports are connected to an Internet group management protocol (IGMP) querier or not; and a port information transference unit learning the multicast MAC address of the IGMP querier connected to the apparatus, obtaining information on a port having the multicast MAC address as the destination address from the filtering database, and transferring the information to the multicast gate information unit. According to the present application, forged traffic is blocked from being multicasted and thus restricted resources of a network are prevented from being wasted. As a result, the network may be used more efficiently in an industrial field.
    • 提供了一种用于阻止伪造的组播数据包的方法和装置。 该装置包括连接到用户终端的输入和输出端口; 转发处理单元,将通过所述输入端口之一输入的帧传送到连接到具有目的地地址的用户终端的输出端口之一; 确定单元,从包括在所述帧中的源地址确定连接到所述输入端口之一的用户终端的地址; 过滤数据库,其基于从所述确定单元接收的信息,存储关于连接到具有所述帧的目的地地址的用户终端的输出端口的信息; 组播门信息单元,其包括提供单向多播服务的帧的组播媒体访问控制(MAC)地址的信息,并且通过检查输入和输出端口是否连接到所述具有相应多播MAC地址的所有帧作为目的地地址来阻止或转发 一个互联网组管理协议(IGMP)查询器; 以及端口信息转发单元,用于学习与该装置连接的IGMP查询器的组播MAC地址,从过滤数据库获取具有组播MAC地址的端口作为目的地地址的信息,并将该信息传送给组播门信息单元。 根据本申请,伪造的业务被阻止被多播,从而防止网络的资源被浪费。 结果,可以在工业领域中更有效地使用网络。
    • 8. 发明申请
    • SYSTEM FOR AND METHOD OF PROVIDING IPTV SERVICE IN NEXT GENERATION NETWORK
    • 在下一代网络中提供IPTV服务的系统和方法
    • US20100046513A1
    • 2010-02-25
    • US12516088
    • 2007-10-31
    • Heuk ParkKyung-Gyu JeonSoon-Seok LeeJong-Tae Song
    • Heuk ParkKyung-Gyu JeonSoon-Seok LeeJong-Tae Song
    • H04L12/56
    • H04N7/17318H04N7/17345H04N21/2543H04N21/25816H04N21/472H04N21/6125H04N21/6405
    • A system for and a method of providing IPTV service in a next generation network are provided. The system includes a service control unit, a transmission control unit, and an L2 switch unit. A service control unit authenticates a user terminal by receiving a request for providing a service from the user terminal which desires to receive the IPTV service and search for subscription information including the IPTV service for which the user has watching authority, when the user is an IPTV service subscriber. A transmission control unit extracts identification information of the user and a multicast address through which the IPTV service is provided from the subscription information found by the service control unit. An L2 switch unit performs switching so as to connect the multicast router which provides the IPTV service to the user terminal by identifying the watching authority of the user for the IPTV service corresponding to the request of the user terminal for providing the service by using the identification information and the multicast address through which the IPTV service provided, which are extracted by the transmission control unit.
    • 提供了一种在下一代网络中提供IPTV服务的系统和方法。 该系统包括业务控制单元,传输控制单元和L2交换单元。 服务控制单元通过从用户终端接收提供服务的请求来认证用户终端,该用户终端希望接收IPTV服务,并且当用户是IPTV时,搜索包括用户具有观看权限的IPTV服务的订阅信息 服务订户。 传输控制单元从服务控制单元发现的订阅信息提取用户的识别信息和提供IPTV服务的多播地址。 L2交换单元进行交换,以通过使用识别符号来识别与用户终端的用户终端的请求对应的用于IPTV服务的用户的观看权限,从而将提供IPTV业务的组播路由器连接到用户终端 信息和IPTV服务提供的多播地址,由传输控制单元提取。
    • 9. 发明授权
    • Method for measuring performance of MPLS LSP
    • 测量MPLS LSP性能的方法
    • US07561524B2
    • 2009-07-14
    • US11510405
    • 2006-08-25
    • Kyung Gyu ChunSoon Seok Lee
    • Kyung Gyu ChunSoon Seok Lee
    • H04L12/26
    • H04L69/40H04L43/00H04L43/0823H04L69/22
    • Provided is a method for measuring performance of a multi-protocol label switching label switched path (MPLS LSP), using a fast failure detection (FFD) packet among MPLS operation and management (OAM) packets recommended by International Telecommunication Union-Telecommunication standardization sector (ITU-T) Y.1711 to detect a packet error generated in the MPLS LSP and newly defining bytes not used in the FFD frame to use the bytes for parity check.An ingress node performs the steps of: calculating a parity value of an MPLS packet as byte interleaved parity (BIP)-8 before transmitting the MPLS packet; storing the calculated parity value of the MPLS packet in an MPLS OAM packet of an FFD structure; and transmitting the MPLS OAM packet whenever transmitting the MPLS packet. And an egress node performs the steps of: calculating a parity value of a received MPLS packet; comparing a parity value of an MPLS packet stored in the MPLS OAM packet with the parity value of the received MPLS packet; and when the two parity values are not identical, determining that an error has occurred in the MPLS packet and discarding the MPLS packet.
    • 提供了一种使用国际电信联盟电信标准化部门推荐的MPLS操作和管理(OAM)分组中的快速故障检测(FFD)分组来测量多协议标签交换标签交换路径(MPLS LSP)的性能的方法( ITU-T)Y.1711检测在MPLS LSP中生成的分组错误,并且新定义FFD帧中未使用的字节,以使用字节进行奇偶校验。 入口节点执行以下步骤:在发送MPLS分组之前,计算MPLS分组的奇偶校验值作为字节交织奇偶校验(BIP)-8; 将所计算的所述MPLS分组的奇偶校验值存储在FFD结构的MPLS OAM分组中; 并在发送MPLS报文时发送MPLS OAM报文。 并且出口节点执行以下步骤:计算接收的MPLS分组的奇偶校验值; 将存储在MPLS OAM分组中的MPLS分组的奇偶校验值与接收的MPLS分组的奇偶校验值进行比较; 并且当两个奇偶校验值不相同时,确定在MPLS分组中已经发生错误并丢弃MPLS分组。
    • 10. 发明申请
    • CALL CONTROL METHOD FOR SEAMLESS MOBILITY SERVICE
    • 无障碍移动性服务的呼叫控制方法
    • US20090154394A1
    • 2009-06-18
    • US12203632
    • 2008-09-03
    • No-ik PARKSoon-seok LEE
    • No-ik PARKSoon-seok LEE
    • H04W4/00
    • H04W76/11H04L65/1016H04L65/1083H04L65/80H04W80/10
    • A call control method for an Internet Protocol (IP)-based mobility service is provided. The call control method for ensuring service continuity in a mobile communication service environment, includes: receiving a call signal message including permanent IP addresses and transport IP addresses from a transmitter terminal and a receiver terminal, and acquiring the permanent IP addresses and the transport IP addresses of the transmitter terminal and the receiver terminal; and performing call control between the transmitter terminal and the receiver terminal on the basis of the transport IP addresses and the permanent IP addresses of the transmitter terminal and the receiver terminal. Therefore, by interfacing with an IP multimedia subsystem (IMS) for controlling a Session Initiation Protocol (SIP)-based service, an IP mobility control apparatus for controlling mobility of a terminal when a call is controlled, and a network control apparatus for controlling a network, it is possible to prevent data transmission from being interrupted while the terminal is moving, thereby providing an IP-based seamless, high-quality service.
    • 提供了一种基于互联网协议(IP)的移动业务的呼叫控制方法。 用于确保移动通信服务环境中的服务连续性的呼叫控制方法包括:从发送终端和接收终端接收包括永久IP地址和传输IP地址的呼叫信号消息,并获取永久IP地址和传输IP地址 的发射机终端和接收机终端; 并根据发送终端和接收终端的传送IP地址和永久IP地址,在发送终端与接收终端之间进行呼叫控制。 因此,通过与用于控制基于会话发起协议(SIP)的服务的IP多媒体子系统(IMS)接口,用于在呼叫被控制时控制终端的移动性的IP移动性控制装置,以及用于控制 网络,可以防止在终端移动时数据传输中断,从而提供基于IP的无缝,高质量的服务。