Data distribution
    1.
    发明授权
    Data distribution 有权
    数据分布

    公开(公告)号:US07212634B2

    公开(公告)日:2007-05-01

    申请号:US10019012

    申请日:2001-07-20

    IPC分类号: H04L9/00

    摘要: In a data distribution system, data is divided into a number of application data units. A sequence of keys is generated systematically, and a different key is used to encrypt each data unit at the source. At the receivers, corresponding keys are generated and used to decrypt the data units to gain access to the data. The constructions used to generate the keys are such that an intrinsically limited subset of the entire sequence of keys is made available to the user by communicating a selected combination of one or more seed values.

    摘要翻译: 在数据分发系统中,数据被分成多个应用数据单元。 系统地生成一系列密钥,并且使用不同的密钥来加密源的每个数据单元。 在接收机处,生成相应的密钥,并用于解密数据单元以访问数据。 用于生成密钥的结构使得通过传送一个或多个种子值的所选择的组合使得整个密钥序列的本质上有限的子集可用于用户。

    Monitoring path characterisation information
    2.
    发明授权
    Monitoring path characterisation information 有权
    监控路径特征信息

    公开(公告)号:US09084132B2

    公开(公告)日:2015-07-14

    申请号:US13704803

    申请日:2011-06-14

    摘要: Methods and an associated traffic management module and system are disclosed for monitoring, at a traffic management module (26) within a data network, path characterisation information indicative of at least one measure of a dynamic network characteristic at a remote node (23) outside said data network. The method involves a traffic management module (26) receiving at least one data unit from a remote node (23) outside said data network, and in the event that said at least one data unit is encapsulated in an outer header and that an inner header of said data unit includes path characterisation information, performing the following in respect of said data unit: (a) monitoring said path characterisation information in said inner header; and (b) forwarding said data unit according to a first treatment category. In the event that these conditions are not met, the data unit is instead subjected to an alternative treatment.

    摘要翻译: 公开了方法和相关联的业务管理模块和系统,用于在数据网络内的业务管理模块(26)处监视指示所述远程节点(23)之外的远程节点(23)的动态网络特性的至少一个度量的路径表征信息 数据网络。 该方法涉及业务管理模块(26),其从所述数据网络之外的远程节点(23)接收至少一个数据单元,并且在所述至少一个数据单元被封装在外部报头中并且内部报头 所述数据单元包括路径表征信息,对所述数据单元执行以下操作:(a)监视所述内部报头中的所述路径表征信息; 和(b)根据第一处理类别转发所述数据单元。 在不满足这些条件的情况下,数据单元被替代地进行替代处理。

    MONITORING PATH CHARACTERISATION INFORMATION
    3.
    发明申请
    MONITORING PATH CHARACTERISATION INFORMATION 有权
    监测路径特征信息

    公开(公告)号:US20130088997A1

    公开(公告)日:2013-04-11

    申请号:US13704803

    申请日:2011-06-14

    IPC分类号: H04W24/02

    摘要: Methods and an associated traffic management module and system are disclosed for monitoring, at a traffic management module (26) within a data network, path characterisation information indicative of at least one measure of a dynamic network characteristic at a remote node (23) outside said data network. The method involves a traffic management module (26) receiving at least one data unit from a remote node (23) outside said data network, and in the event that said at least one data unit is encapsulated in an outer header and that an inner header of said data unit includes path characterisation information, performing the following in respect of said data unit: (a) monitoring said path characterisation information in said inner header; and (b) forwarding said data unit according to a first treatment category. In the event that these conditions are not met, the data unit is instead subjected to an alternative treatment.

    摘要翻译: 公开了方法和相关联的业务管理模块和系统,用于在数据网络内的业务管理模块(26)处监视指示所述远程节点(23)之外的远程节点(23)的动态网络特性的至少一个度量的路径表征信息 数据网络。 该方法涉及业务管理模块(26),其从所述数据网络之外的远程节点(23)接收至少一个数据单元,并且在所述至少一个数据单元被封装在外部报头中并且内部报头 所述数据单元包括路径表征信息,对所述数据单元执行以下操作:(a)监视所述内部报头中的所述路径表征信息; 和(b)根据第一处理类别转发所述数据单元。 在不满足这些条件的情况下,数据单元被替代地进行替代处理。

    System and method for operating a transmitter to multicast data blocks over a network
    4.
    发明授权
    System and method for operating a transmitter to multicast data blocks over a network 有权
    用于操作发射机以通过网络来组播数据块的系统和方法

    公开(公告)号:US07069340B1

    公开(公告)日:2006-06-27

    申请号:US09763325

    申请日:1999-09-17

    IPC分类号: G06F15/16

    摘要: A packet network is arranged into a hierarchy, having one organization-level portion (CS, P, R2) and three site-level portions (S1, S2, S3). By using forwarding computers and assigning multicast addresses in respect of each portion, the total number of multicast addresses required to send multicast messages to all possible subsets of potential recipients is reduced. This alleviates routers in the network of the burden associated with storing and processing a large amount of multicast addresses.

    摘要翻译: 分组网络被布置成具有一个组织级部分(CS,P,R 2)和三个站点级部分(S 1,S 2,S 3)的层次结构。 通过使用转发计算机和针对每个部分分配组播地址,减少了将多播消息发送到潜在接收者的所有可能子集所需的组播地址总数。 这减轻了网络中的路由器与存储和处理大量多播地址相关联的负担。

    Obtaining information from data items
    5.
    发明授权
    Obtaining information from data items 有权
    从数据项中获取信息

    公开(公告)号:US09515960B2

    公开(公告)日:2016-12-06

    申请号:US14000546

    申请日:2012-02-23

    摘要: Methods and apparatus are disclosed for obtaining and processing information from a predetermined portion of a header of a data item such as an IP packet transmitted via a communication network such as a packet network, the portion carrying a codepoint selected from a first set of codepoints each of which has a pre-defined meaning according to a first pre-defined communication protocol. The method comprises: receiving the data item; inspecting the header whereby to determine the codepoint carried by the predetermined portion thereof; identifying whether the codepoint is a member of a second set of codepoints, the second set comprising fewer possible codepoints than the first set; and in the event that the codepoint is identified as being a member of the second set, and in dependence on such an identification being made, interpreting that codepoint according to a different pre-defined communication protocol as having a different pre-defined meaning and routing the data item via the communication network via the second pre-defined communication protocol.

    摘要翻译: 公开了用于从诸如分组网络等通信网络发送的诸如IP分组的数据项的报头的预定部分获取和处理信息的方法和装置,该部分承载从每个编码点的第一组码点中选择的代码点 其中根据第一预定义的通信协议具有预定义的含义。 该方法包括:接收数据项; 检查标题,从而确定由其预定部分承载的代码点; 识别码点是否是第二组码点的成员,所述第二集合包括比所述第一集合更少的可能码点; 并且在代码点被识别为第二组的成员的情况下,并且根据进行的这种识别,将根据不同的预定义通信协议的编码点解释为具有不同的预定义义和路由 所述数据项经由所述通信网络经由所述第二预定义通信协议。

    OBTAINING INFORMATION FROM DATA ITEMS
    6.
    发明申请
    OBTAINING INFORMATION FROM DATA ITEMS 有权
    从数据项获取信息

    公开(公告)号:US20130329739A1

    公开(公告)日:2013-12-12

    申请号:US14000546

    申请日:2012-02-23

    IPC分类号: H04L12/947

    摘要: Methods and apparatus are disclosed for obtaining information from a predetermined portion of a header of a data item such as an IP packet transmitted via a communication network such as a packet network, the portion carrying a codepoint selected from a first set of codepoints each of which has a pre-defined meaning according to a first pre-defined communication protocol. The method comprises: receiving the data item (s71); inspecting the header whereby to determine the codepoint carried by the predetermined portion thereof (s72); identifying whether the codepoint is a member of a second set of codepoints (s77, s78), the second set comprising fewer possible codepoints than the first set; and in the event that the codepoint is identified as being a member of the second set, and in dependence on such an identification being made, interpreting that codepoint according to a different pre-defined communication protocol as having a different pre-defined meaning (s80).

    摘要翻译: 公开了用于从诸如分组网络的通信网络发送的诸如IP分组的数据项的报头的预定部分获得信息的方法和装置,该部分携带从第一组码点中选择的码点, 具有根据第一预定义通信协议的预定义意义。 该方法包括:接收数据项(s71); 检查标题,以确定其预定部分承载的代码点(s72); 识别所述码点是否是第二组码点的成员(s77,s78),所述第二组包括比所述第一组更少的可能编码点; 并且在代码点被识别为第二组的成员的情况下,并且根据进行的这种识别,将根据不同的预定义通信协议的编码点解释为具有不同的预定义义(s80 )。