公开(公告)号：WO2003067888A1

公开(公告)日：2003-08-14

申请号：PCT/IB2003/000397

申请日：2003-02-06

Applicant: NOKIA CORPORATION ,  NOKIA INC.

Inventor： HAKKARAINEN, Tomi ,  WALSH, Rod

IPC: H04N7/167

CPC classification number: 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

Abstract: A hybrid method for a service provider (10) to transmit decryption information (e.g., algorithms, parameter, keys) to clients (12) in a secure manner and at low cost for use in decrypting broadcast services. The service provider (10) uses a bi-directional channel (14) (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 (10) transmits the encrypted service on a unidirectional channel (16) (e.g., a DVB-T channel). The service provider (10) preferably also changes the encryption of the service with time, and, as it does, transmits updated decryption information to its clients (12) on the unidirectional channel (16). The updated decryption information is encrypted using the currently valid decryption information and may also include future decryption information and synchronization information.

Abstract translation: 一种用于服务提供商（10）以安全的方式并且以低成本向解密广播服务的方式向客户端（12）传送解密信息（例如，算法，参数，密钥）的混合方法。 服务提供商（10）使用双向信道（14）（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需的当前有效的解密信息（以及可选地，将来的解密信息） 。 服务提供商（10）在单向信道（16）（例如，DVB-T信道）上发送加密的业务。 服务提供商（10）还优选地随时间改变服务的加密，并且如此，向单向信道（16）上的客户端（12）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。

公开(公告)号：WO2003054715A1

公开(公告)日：2003-07-03

申请号：PCT/IB2002/005382

申请日：2002-12-13

Applicant: NOKIA CORPORATION ,  NOKIA, INC.

Inventor： WALSH, Rod ,  HAKKARAINEN, Tomi ,  LUOMA, Juha-Pekka

IPC: G06F15/16

CPC classification number: H04N21/6433 ,  H04L69/18 ,  H04N21/6371 ,  H04N21/64784

Abstract: Methods and systems are provided for filtering digital data formatted in packets. A filter module contains a plurality of filters and is coupled to a filter mapping module. The filter mapping module receives the identification of clusters of discrete segments of a packet and selects a group of fixed length filters to filter the clusters.

Abstract translation: 提供了用于过滤以数据包格式化的数字数据的方法和系统。 滤波器模块包含多个滤波器并耦合到滤波器映射模块。 过滤器映射模块接收分组的离散段的簇的标识，并选择一组固定长度的过滤器来过滤簇。

公开(公告)号：WO2003073675A3

公开(公告)日：2003-09-04

申请号：PCT/IB2003/000651

申请日：2003-02-21

Applicant: NOKIA CORPORATION ,  NOKIA, Inc.

Inventor： NOKIA, Inc. ,  HAKKARAINEN, Tomi ,  KARKAS, Pasi ,  PEKONEN, Harri

IPC: H04L12/56

Abstract: The present invention provides methods and apparatus for filtering a broadcast data stream that can support data flow, e.g. Ipv6 packets. The present invention utilizes common filtering for packet segments that are common among Ipv6 packets (801). A set of rules is applied to the filtered segments in order to determine whether corresponding packets should be subsequently processed (809). The present invention is applicable to numerous applications including MPEG multicast services.

公开(公告)号：WO2003073675A2

公开(公告)日：2003-09-04

申请号：PCT/IB2003/000651

申请日：2003-02-21

Applicant: NOKIA CORPORATION ,  NOKIA, Inc.

Inventor： NOKIA, Inc. ,  HAKKARAINEN, Tomi ,  KARKAS, Pasi ,  PEKONEN, Harri

IPC: H04L

CPC classification number: H04N21/235 ,  H04L12/18 ,  H04N21/434 ,  H04N21/435 ,  H04N21/4385

Abstract: The present invention provides methods and apparatus for filtering a broadcast data stream that can support data flow, e.g. Ipv6 packets. The present invention utilizes common filtering for packet segments that are common among Ipv6 packets. Segments that are not common are separately filtered. A set of rules is applied to the filtered segments in order to determine whether corresponding packets should be subsequently processed. The present invention is applicable to numerous applications including MPEG multicast services.

Abstract translation: 本发明提供了用于过滤可以支持数据流的广播数据流的方法和装置，例如， Ipv6数据包。 本发明对于Ipv6分组中常见的分组段采用公共过滤。 不常见的细分被单独过滤。 一组规则被应用于过滤的段，以便确定是否应该随后处理相应的分组。 本发明适用于包括MPEG多播服务在内的许多应用。

公开(公告)号：WO2003045032A1

公开(公告)日：2003-05-30

申请号：PCT/IB2002/004823

申请日：2002-11-19

Applicant: NOKIA CORPORATION ,  AALTONEN, Janne ,  TALMOLA, Pekka ,  WALSH, Rod ,  LUOMA, Juha-Pekka ,  HAKKARAINEN, Tomi

Inventor： AALTONEN, Janne ,  TALMOLA, Pekka ,  WALSH, Rod ,  LUOMA, Juha-Pekka ,  HAKKARAINEN, Tomi

IPC: H04L29/06

CPC classification number: H04L29/12009 ,  H04L29/12783 ,  H04L29/12801 ,  H04L61/35 ,  H04L61/6004 ,  H04L69/28 ,  H04W8/26 ,  H04W52/0216 ,  H04W72/12 ,  H04W80/04 ,  Y02D70/168

Abstract: A method of defining Time Division Multiplex access slots in an IP address is disclosed. The method comprises steps including the encoding of a schedule of delivery time slots as a mask in said IP address.

Abstract translation: 公开了一种在IP地址中定义时分复用接入时隙的方法。 所述方法包括以下步骤：将所述传送时隙的调度编码为所述IP地址中的掩码。