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37 条记录 (耗时 0.026 秒)

    Hybrid network encrypt/decrypt scheme
    33.
    发明授权
    Hybrid network encrypt/decrypt scheme 失效
    混合网络加密/解密方案

    公开(公告)号：US07477743B2

    公开(公告)日：2009-01-13

    申请号：US10072147

    申请日：2002-02-07

    申请人： Tomi Hakkarainen ,  Rod Walsh

    发明人： Tomi Hakkarainen ,  Rod Walsh

    IPC分类号： H04L9/00

    CPC分类号： H04H60/23 ,  H04H60/91 ,  H04L9/0891 ,  H04L9/3226 ,  H04L2209/60 ,  H04L2209/80 ,  H04N7/162 ,  H04N7/1675 ,  H04N7/17318 ,  H04N21/25816 ,  H04N21/26613 ,  H04N21/6181 ,  H04N21/63345 ,  H04N2007/1739

    摘要： A hybrid method for a service provider to transmit decryption information (e.g., algorithms, parameters, keys) to clients in a secure manner and at low cost for use in decrypting broadcast services. The service provider uses a bi-directional channel (e.g., a GPRS channel) to receive service requests, authenticate clients and transmit currently valid decryption information (and, optionally, future decryption information) necessary to decrypt a broadcast service. The service provider transmits the encrypted service on a unidirectional channel (e.g., a DVB-T channel). The service provider preferably also changes the encryption of the service with time, and, as it does, transmits updated decryption information to its clients on the unidirectional channel. The updated decryption information is encrypted using the currently valid decryption information and may also include future decryption information and synchronization information.

    摘要翻译： 一种用于服务提供商以安全的方式以低成本向解密信息（例如算法，参数，密钥）传送解密信息（用于解密广播服务）的混合方法。 服务提供商使用双向信道（例如，GPRS信道）来接收服务请求，认证客户端并发送解密广播服务所必需的当前有效的解密信息（以及可选地，未来的解密信息）。 服务提供商在单向信道（例如，DVB-T信道）上发送加密的业务。 服务提供者还优选地随时间改变服务的加密，并且如此，在单向信道上向其客户端发送更新的解密信息。 使用当前有效的解密信息来加密更新的解密信息，还可以包括将来的解密信息和同步信息。

    METHOD AND SYSTEM FOR HEADER COMPRESSION
    34.
    发明申请
    METHOD AND SYSTEM FOR HEADER COMPRESSION 有权
    用于压头的方法和系统

    公开(公告)号：US20080320171A1

    公开(公告)日：2008-12-25

    申请号：US12194110

    申请日：2008-08-19

    申请人： Rod Walsh ,  Juha-Pekka Luoma ,  Anne Saaranen

    发明人： Rod Walsh ,  Juha-Pekka Luoma ,  Anne Saaranen

    IPC分类号： G06F15/16

    CPC分类号： H04L69/04 ,  H04L12/1868 ,  H04L12/1877 ,  H04L12/189 ,  H04L69/22

    摘要： A compression context for a plurality of packets is established with a receiving device. Each of these packets is associated with one or more reliable multicast protocols, such as the Layered Coding Transform (LCT) protocol, the Asynchronous Layered Coding (ALC) protocol, the FLUTE protocol, the MUPPET protocol, and the NACK-Oriented Reliable Multicast (NORM) protocol. Upon establishment of the compression context, a compressed packet is generated for one of the plurality of packets and transmitted to the receiving device. The compressed packet has a reduced number of bits in its header. Upon receipt, the receiving device decompresses the compressed packet based on the compression context.

    摘要翻译： 用接收设备建立多个分组的压缩上下文。 这些分组中的每一个与一个或多个可靠的多播协议相关联，例如分层编码变换（LCT）协议，异步分层编码（ALC）协议，FLUTE协议，MUPPET协议和面向NACK的可靠多播（ NORM）协议。 在建立压缩上下文时，为多个分组之一生成压缩分组，并发送给接收设备。 压缩包在其头部中具有减少的比特数。 在接收到接收设备时，基于压缩上下文来解压缩压缩的分组。

    Multicast transmission in a cellular network
    35.
    发明申请
    Multicast transmission in a cellular network 失效

    公开(公告)号：US20060166653A1

    公开(公告)日：2006-07-27

    申请号：US10528403

    申请日：2002-09-20

    申请人： Lin Xu ,  Juha-Pekka Luoma ,  Sinikka Sarkkinen ,  Rod Walsh

    发明人： Lin Xu ,  Juha-Pekka Luoma ,  Sinikka Sarkkinen ,  Rod Walsh

    IPC分类号： H04Q7/22 ,  H04M1/663

    CPC分类号： H04W4/06 ,  H04W4/08 ,  H04W60/00 ,  H04W72/005

    摘要： The invention relates to a mechanism for performing multicast transmission in a cellular network. In order to enable establishment of resources only in cells containing members of the multicast group and to avoid congestion on the uplink channel, a multicast service notification is transmitted to mobile stations, thereby informing members of the multicast group of an upcoming multicast session. The moment for a response to said multicast service notification is selected in the mobile stations and a presence report is sent from at least one of said mobile stations at the response moment of said at least one mobile station. The presence report or reports are received within a radio access network, and radio resources are established for multicast transmission in a cell of the cellular network when the presence report(s) received in said cell meet(s) predetermined criteria.

    Method and system for header compression
    37.
    发明申请
    Method and system for header compression 有权
    头压缩的方法和系统

    公开(公告)号：US20050160184A1

    公开(公告)日：2005-07-21

    申请号：US10739066

    申请日：2003-12-19

    申请人： Rod Walsh ,  Juha-Pekka Luoma ,  Anne Saaranen

    发明人： Rod Walsh ,  Juha-Pekka Luoma ,  Anne Saaranen

    IPC分类号： G06F15/16 ,  H04L12/18

    CPC分类号： H04L69/04 ,  H04L12/1868 ,  H04L12/1877 ,  H04L12/189 ,  H04L69/22

    摘要： A compression context for a plurality of packets is established with a receiving device. Each of these packets is associated with one or more reliable multicast protocols, such as the Layered Coding Transform (LCT) protocol, the Asynchronous Layered Coding (ALC) protocol, the FLUTE protocol, the MUPPET protocol, and the NACK-Oriented Reliable Multicast (NORM) protocol. Upon establishment of the compression context, a compressed packet is generated for one of the plurality of packets and transmitted to the receiving device. The compressed packet has a reduced number of bits in its header. Upon receipt, the receiving device decompresses the compressed packet based on the compression context.

    摘要翻译： 用接收设备建立多个分组的压缩上下文。 这些分组中的每一个与一个或多个可靠的多播协议相关联，例如分层编码变换（LCT）协议，异步分层编码（ALC）协议，FLUTE协议，MUPPET协议和面向NACK的可靠多播（ NORM）协议。 在建立压缩上下文时，为多个分组之一生成压缩分组，并发送给接收设备。 压缩包在其头部中具有减少的比特数。 在接收到接收设备时，基于压缩上下文来解压缩压缩的分组。