EP1525773A1 - Procede, systeme et unite de communication pour la transmission d'informations a plusieurs destinataires par l'intermediaire d'un reseau de communication - Google Patents

Procede, systeme et unite de communication pour la transmission d'informations a plusieurs destinataires par l'intermediaire d'un reseau de communication

Info

Publication number
EP1525773A1
EP1525773A1 EP03787639A EP03787639A EP1525773A1 EP 1525773 A1 EP1525773 A1 EP 1525773A1 EP 03787639 A EP03787639 A EP 03787639A EP 03787639 A EP03787639 A EP 03787639A EP 1525773 A1 EP1525773 A1 EP 1525773A1
Authority
EP
European Patent Office
Prior art keywords
communication unit
inf
subscriber
zbg
decentralized
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03787639A
Other languages
German (de)
English (en)
Inventor
Thomas Bahls
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1525773A1 publication Critical patent/EP1525773A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H04L12/2858—Access network architectures
    • H04L12/2861—Point-to-multipoint connection from the data network to the subscribers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/1886—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with traffic restrictions for efficiency improvement, e.g. involving subnets or subdomains
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/185—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast with management of multicast group membership
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13039—Asymmetrical two-way transmission, e.g. ADSL, HDSL
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13099—Loop multiplexer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13242—Broadcast, diffusion, multicast, point-to-multipoint (1 : N)
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13298—Local loop systems, access network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13376—Information service, downloading of information, 0800/0900 services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13389—LAN, internet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
    • H04Q2213/13399—Virtual channel/circuits

Definitions

  • Method, communication arrangement and communication device for transmitting broadcast information via a communication network.
  • broadband Internet access In current subscriber access networks - also referred to as access networks - the e.g. Subscriber lines designed according to an xDSL transmission method and providing high transmission rates are becoming increasingly widespread.
  • the broadband Internet access made possible, for example, increases the number of applications or applications provided by these subscriber access networks.
  • One of these applications is the transmission of information from multimedia content - also known as broadband data streams - such as videos or video streams.
  • broadband distribution services in particular multimedia distribution services (e.g. radio and television) as well as on-demand services such as "video-on-demand *" or broadband internet communication (e.g. video conferences) can be implemented.
  • Multicast * or" Multicasting * is increasingly being used for the transmission of broadband data streams via communication networks.
  • Multicast or multicasting refers to the ability of a communication network or a service implemented therein to establish connections to several connected subscribers or to send information or messages to a number of previously defined subscribers (recipients). In the context of multicast or multicasting, there is the possibility of addressing several participants via just one address (multicast, group address).
  • the aim is to occupy less than n times the bandwidth in the communication network for n customers who request or subscribe to the same video stream, for example.
  • Such a branch point is, for example, a decentralized, remote communication device in a communication network - for example a multiplexer device, DSLAM - to which the respectively assigned subscribers or subscriber connections are each connected via subscriber-specific, virtual connections of a subscriber access network and the subscriber-specific information transmission between the participants and the communication device via the virtual connections set up.
  • a branch point is, for example, a decentralized, remote communication device in a communication network - for example a multiplexer device, DSLAM - to which the respectively assigned subscribers or subscriber connections are each connected via subscriber-specific, virtual connections of a subscriber access network and the subscriber-specific information transmission between the participants and the communication device via the virtual connections set up.
  • the multicast protocol used in the context of multicast is concluded on the network side in this communication device, ie a multicast data stream arriving at the communication device or at least a part of it is replicated n-fold, for example, and the replicated data streams via the affected subscriber line-specific, virtual Connections towards participants transmitted.
  • This n-fold transmission of broadband data streams in particular due to distribution services implemented in subscriber access networks, represents an ineffective use or waste of transmission resources provided by the subscriber access networks.
  • the invention is therefore based on the object of improving the implementation of distribution services and, in particular, of achieving a more efficient use of the transmission resources provided by the subscriber access networks in the case of broadcast information transmitted in the context of “multicast *.
  • the object is achieved on the basis of a method according to the features of the preamble of patent claim 1 by its characterizing features.
  • the problem is solved on the basis of a communication arrangement and a communication device according to the preamble of claims 19 and 24 by the respective characteristic features.
  • broadcast information brought to a central communication unit is transmitted to at least one subscriber connections assigned to at least one decentralized communication unit via at least one communication network.
  • at least one individual connection-individual virtual connection via the communication network, via the decentralized communication unit, to / via each subscriber connection is set up for the subscriber line-specific information transmission.
  • the essential aspect of the method according to the invention is that at least one further virtual connection is set up between the central and the at least one decentralized communication unit.
  • the broadcast information is checked in the central communication unit as to whether at least some of the broadcast information is to be transmitted to a plurality of subscriber connections of the at least one decentralized communication unit.
  • the at least part of the broadcast information for a plurality of subscriber connections is transmitted via transmits the at least one further virtual connection to the at least one decentralized communication unit, reproduces it there and in each case forwards it to / via the plurality of subscriber connections.
  • the main advantage of the method according to the invention is that the necessary branching point or replication point at which at least part of the transmitted multicast data stream or. the transmitted broadcast information is to be replicated further in the direction
  • Participant is moved. As a result, an n-fold transmission of broadband data streams or. Broadcast information is avoided over the same communication network, so that valuable transmission resources are saved or the provided transmission resources are used efficiently.
  • the replication of the broadcast information no longer has to take place in accordance with the prior art at one of the network-side end points of the individual subscriber line-specific virtual connections which are usually arranged in a central communication unit; rather, the information to be transmitted, as long as the physical transmission link is identical, is only transmitted once to a decentralized communication unit in parallel with the subscriber line-specific virtual connections via at least one further specially provided virtual connection.
  • the decentralized communication unit is the end point of this at least one special virtual connection - hereinafter also referred to as a communication unit-individual virtual connection - which is not assigned to any subscriber.
  • the broadcast information transmitted via this special virtual connection is thus clearly identified as the broadcast information to be replicated, so that complex monitoring of the information arriving at the decentralized communication unit can be dispensed with.
  • different transmission protocols are implemented by the virtual connections which are carried out via the subscriber connections of the at least one decentralized communication unit. For each transmission protocol implemented via the at least one decentralized communication unit, at least one additional, individual, protocol-specific, virtual connection between the central and the at least one decentralized communication unit is set up.
  • the broadcast information supplied to the central communication unit is advantageously checked to see whether it is to be transmitted to several subscriber connections of the at least one decentralized communication unit that implement the same transmission protocol. If at least part of the broadcast information to be transmitted to a plurality of subscriber connections each implementing the same transmission protocol is ascertained, the at least part of the broadcast information is transmitted from the central communication unit via the at least one transmission protocol-specific, virtual connection to the at least one decentralized communication unit , reproduced there and forwarded to / via the plurality of subscriber connections implementing the same transmission protocol - claim 7.
  • an individual ie a communication unit and, at the same time, protocol stack or transmission method-individual, virtual connection for transmitting the broadcast information between the at least one decentralized module and the central assembly.
  • the method according to the invention can then also be used are set if subscriber connections providing different transmission technologies or virtual connections designed according to different transmission protocols are arranged in a decentralized communication unit or decentralized module.
  • the block diagram shows the structure of a network element NE arranged in a subscriber access network ACCESS - for example a remote multiplexer device DSLAM, Digital Subscriber Line Access Multiplexer.
  • the network element NE comprises a central communication unit ZBG designed as an assembly and a plurality of decentralized communication units DBG1... Z also designed as an assembly, only one decentralized communication unit representing several of them being shown in the block diagram.
  • a control unit STGZ is arranged in the central communication unit or central assembly ZBG, which includes control means CONT for carrying out the method according to the invention and an Ethernet switch EN-SW designed according to the IEEE standard 802.3.
  • means IGMP are also provided for the network-specific completion of the IGMP protocol.
  • the IGMP protocol is described, for example, in the publication IGMP V2, RFC2236.
  • the control unit STGZ is connected to a higher-level communication network OKN via an input SE and via another input ZE assigned to the central assembly ZBG.
  • the control unit STG is connected via an output SA to a connection arranged in the central assembly ZBG.
  • End unit AE connected.
  • the central module ZBG is connected via one of the connection units AE to a communication network EN, which is designed in accordance with the IEEE standard 802.3 and is provided as internal wiring of the modules (backplane) - hereinafter referred to as Ethernet.
  • the central communication unit ZBG is connected to an input DE of the individual decentralized modules DBG1 ... Z via the internal communication network or Ethernet EN.
  • control unit STGD each have a control unit STGD, which likewise includes control means CONT for carrying out the method according to the invention and an Ethernet switch EN-SW designed according to the IEEE standard 802.3.
  • the control unit STGD is connected via an input SE to the input DE of the respective decentralized assembly DBG1 ... Z. Furthermore, the control unit STGD is connected via an output SA to corresponding subscriber line units AE arranged in the decentralized assembly DBG1 ... Z.
  • Several subscribers are connected to these subscriber line units AE via connecting lines or subscriber lines TLNll ... nk.
  • the connection of the respective subscribers TLNll ... nk to the individual subscriber connection units AE of the decentralized assemblies DBG1 ... Z can be made, for example, by means of copper twin wires, via which an xDSL transmission method is implemented.
  • the multicast data stream is e.g. designed in accordance with the Internet protocol, the transmitted broadcast information m_inf representing, for example, k television channels broadcast in parallel.
  • Each TLN ll ... nk subscriber connection provided for this purpose has a (subscriber-specific) virtual connection set up from the respective subscriber via the decentralized assembly DBG1 ... Z via the Ethernet EN to the control unit STGZ arranged in the central assembly ZBG.
  • These virtual connections vid_ll ... nk are also referred to as “Ethernet VLANs * and are designed in accordance with the IEEE standards 802. IQ and 802.1D.
  • each connected subscriber has at least one logically separated communication channel via the subscriber access network ACCESS.
  • the subscriber line-specific virtual connections vidll ... nk on the subscriber side can also be terminated on the respective subscriber line TLN ll ... nk.
  • control unit STGD arranged in the decentralized assembly DBG1 ... Z and the control unit STGZ arranged in the central assembly ZBG there is an additional communication unit-specific, virtual connection vid_m configured according to the IEEE standards 802.IQ and 802.1D via the Ethernet EN set up, via which in the context of the method according to the invention those broadcast information items are transmitted, which are simultaneously received from several at a decentralized module
  • DBG1 ... Z connected subscribers TLNll ... nk were requested or subscribed to.
  • each subscriber TLNll ... nk can select at least part of the broadcast information m_inf brought up to the central module ZBG.
  • the participants signal TLNll ... nk that they wish to become members of a corresponding "multicast group *" using the IGMP protocol.
  • the data exchanged in the context of the IGMP protocol (here, for example, IGMP join / leave requests) is transparently forwarded by the respective decentralized assembly DBG1 ... Z via the Ethernet EN to the central assembly ZBG, but the transmitted data is read, evaluated and registered (also logged) by the control unit STGD arranged in the decentralized module DBG.
  • This "logging" * of the information transmitted as part of the IGMP protocol is also referred to as "IGMP snooping *.
  • the information snoop-inf which is also logged in the course of IGMP snooping, enables an assignment of subscriber connections requesting specific broadcast information or an assignment of virtual connections vid_ll ... nk via these subscriber connections TLNll ... nk to the respective multicast group ,
  • the co-logged information snoop-inf is stored in a memory MEM provided in the decentralized assembly DBG1 ... Z and assigned to the control unit STGD.
  • the IGMP requests mentioned are transmitted via the Ethernet EN to the IGMP instance IGMP arranged in the central module ZBG and concluding the IGMP protocol.
  • the control unit STGZ can derive or determine which subscriber-specific, virtual connections vid_ll ... nk which multicast groups or
  • Broadcast information m_inf are requested. This information is used as distribution information, for example in the form of a table deaf (vie) stored in a memory MEM on the central assembly ZBG.
  • vie table deaf
  • the broadcast information m_inf arriving at the ZE central module ZBG during the multicast is checked with the aid of the distribution information vi stored in the memory MEM as part of a “LookUp *”. As part of the check, it is determined which broadcast information m-inf - i.e. In this exemplary embodiment, which television channel - via which virtual connection vid_ll ... nk to the respective subscriber TLN ll ... nk connected to the decentralized module DBG1 ... Z are to be transmitted. If the incoming broadcast information m-inf or part of this broadcast information m_inf was requested simultaneously by several subscribers TLNll ... nk connected to a decentralized communication unit or module DBG1 ...
  • the control unit STGZ arranged in the central assembly ZBG checks according to the method according to the invention whether the or whether part of the incoming broadcast information m_inf is sent to several physical or Subscribers TLNll ... nk assigned locally to a decentralized module DBG1 ... Z are to be transmitted. If the check finds that at least a part of the broadcast messages arriving at the ZE input of the central assembly ZBG If information m_inf is to be transmitted to several participants in a module, this at least part of the incoming broadcast information m_inf is assigned a special Ethernet multicast MAC address and this part is inserted in an Ethernet data frame.
  • the IP multicast address of the broadcast information m_inf concerned is converted or “mapped” into a corresponding Ethernet multicast address.
  • the Ethernet data frame generated in this way is not, however, on the central module ZBG (after previous replication) in the individual participants
  • TLNll ... nk are assigned to virtual connections vid_ll ... nk, but via the specially configured, communication unit-specific virtual connection vid_m to the corresponding decentralized module DBG1 ... Z, or to the virtual connection vid_m arranged therein and the virtual connection terminating control unit STGD transmitted.
  • This Ethernet data frame is thus correctly replicated at the logical level, but is only transmitted once at the physical level via the virtual connection vid_m provided for this purpose via the Ethernet EN.
  • transmission resources of the Ethernet EN can be saved.
  • an assignment of the received Ethernet data frames ie a mapping or conversion of the received Ethernet multicast addresses to the corresponding ones addressed subscriber connections TLN ll ... nk or to all virtual connections vid_ll ... nk carried out via them.
  • the broadcast information (which, for example, represent one or more specific television channels), which is thus brought to the control unit STGD via the virtual connection vid_m, is thus forwarded to all subscribers through whom the respective broadcast information is requested (using an IGMP request).
  • the broadcast information m_inf received with the aid of the Ethernet data frames is replicated in the decentralized module DBG1 ... Z as often as required, depending on the requirements of the subscribers, and the replicated broadcast information is vid_ll .. in the respective subscriber line-specific virtual connections. .nk fed. This is done by simply modifying the identification of the individual virtual connections vid_ll ... nk and feeding them back into the decentralized module
  • DBG1 ... Z EN-SW Ethernet switch provided for this purpose.
  • the broadcast information thus fed into the corresponding virtual connections vid_ll ... nk is passed on to the requesting subscribers in the usual manner.
  • the method according to the invention has the advantage that the replication of broadcast information to be transmitted to a plurality of subscribers assigned locally to an assembly, i.e. the replication point is shifted further in the direction of the subscribers and thus the transmission resources required for the transmission of the broadcast information are used more efficiently.
  • the replication point is shifted independently of the completion of the multicast protocol, which is implemented in the central module ZBG.
  • each central assembly ZBG has background knowledge or information about which subscribers are members of a multicast group or have requested the same broadcast information and are at the same time physically assigned to a decentralized assembly.
  • the broadcast information to be transmitted to these subscribers can be easily transmitted via a special virtual connection, with replication taking place later on the decentralized module.
  • the subscribers assigned to a decentralized assembly DBG can use different transmission methods, ie differently configured protocol stacks or protocol levels can be connected - for example with or without PPP (Point to Point Protocol) between the IP and Ethernet protocol level. If such a configuration is present, according to an advantageous development of the method according to the invention, for each type of protocol stack implemented in a decentralized communication unit or on a decentralized module, a separate communication unit or module and protocol stack individual virtual connection for the transmission of the broadcast information can be provided between the respective decentralized assembly DBG and the central assembly ZBG.
  • PPP Point to Point Protocol

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Selon l'invention, pour la transmission d'informations spécifique à un raccordement d'abonné, outre les liaisons virtuelles, spécifiques au raccordement d'abonné, au moins une liaison virtuelle supplémentaire (vid_11 nk) est établie sur au moins un réseau de communication (EN) entre une unité de communication centrale et au moins une unité de communication locale (ZBG, DBG1 z). Les informations destinées à plusieurs destinataires (m_inf) parvenant à l'unité de communication centrale sont contrôlées de manière à déterminer si au moins une partie desdites informations (m_inf) doit être transmise à plusieurs raccordements d'abonnés (TLN11 nk) de la ou des unités de communication locales (DBG1 z). La ou les parties desdites informations (m_inf) destinées à plusieurs raccordements d'abonnés (TLN11 nk) sont transmises par l'intermédiaire de la ou des liaisons virtuelles supplémentaires (vid_m) à la ou aux unités de communication locales (DBG1 z) où elles sont copiées et transmises aux autres raccordement d'abonnés.
EP03787639A 2002-07-31 2003-07-08 Procede, systeme et unite de communication pour la transmission d'informations a plusieurs destinataires par l'intermediaire d'un reseau de communication Withdrawn EP1525773A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10234939A DE10234939A1 (de) 2002-07-31 2002-07-31 Verfahren, Kommunikationsanordnung und Kommunikationseinrichtung zum Übermitteln von Rundsende-Informationen über ein Kommunikationsnetz
DE10234939 2002-07-31
PCT/DE2003/002280 WO2004017668A1 (fr) 2002-07-31 2003-07-08 Procede, systeme et unite de communication pour la transmission d'informations a plusieurs destinataires par l'intermediaire d'un reseau de communication

Publications (1)

Publication Number Publication Date
EP1525773A1 true EP1525773A1 (fr) 2005-04-27

Family

ID=30469273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03787639A Withdrawn EP1525773A1 (fr) 2002-07-31 2003-07-08 Procede, systeme et unite de communication pour la transmission d'informations a plusieurs destinataires par l'intermediaire d'un reseau de communication

Country Status (5)

Country Link
US (1) US20060039375A1 (fr)
EP (1) EP1525773A1 (fr)
CN (1) CN1672455A (fr)
DE (1) DE10234939A1 (fr)
WO (1) WO2004017668A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7301936B2 (en) * 2003-06-25 2007-11-27 Sbc Knowledge Ventures, L.P. Ring overlay network dedicated to carry broadcast traffic to DSLAMs
DE102004021385A1 (de) * 2004-04-30 2005-11-17 Daimlerchrysler Ag Datenkommunikationsnetzwerk mit dezentralem Kommunikationsmanagement
FR2893204B1 (fr) * 2005-11-07 2008-02-01 Thomson Licensing Sa Procede de reception de contenus audiovisuels a destination de plusieurs appareils, serveur et appareil mettant en oeuvre le procede
US8472447B2 (en) 2010-08-04 2013-06-25 Alcatel Lucent IP multicast snooping and routing with multi-chassis link aggregation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5608726A (en) * 1995-04-25 1997-03-04 Cabletron Systems, Inc. Network bridge with multicast forwarding table
US6370142B1 (en) * 1995-07-12 2002-04-09 Nortel Networks Limited Method and apparatus for performing per-port IP multicast pruning
KR100387048B1 (ko) * 1996-03-30 2003-08-21 삼성전자주식회사 중저속 가입자 멀티 캐스팅 구현 방법 및 장치
US5959989A (en) * 1997-06-25 1999-09-28 Cisco Technology, Inc. System for efficient multicast distribution in a virtual local area network environment
JP4080599B2 (ja) * 1998-06-17 2008-04-23 富士通株式会社 通信制御装置およびマルチキャスト対応ｌａｎに適用される通信制御方法
ES2253195T3 (es) * 2000-03-17 2006-06-01 Alcatel Sistema para recibir datos multidifusion.
EP1318628B1 (fr) * 2001-12-10 2005-01-12 Alcatel Dispositif et procédé destiné à diriger du trafic multidiffusion dans un reseau Ethernet MAN
US7590120B2 (en) * 2005-11-18 2009-09-15 Cisco Technology, Inc. Enhanced multicast VLAN registration

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004017668A1 *

Also Published As

Publication number Publication date
US20060039375A1 (en) 2006-02-23
WO2004017668A1 (fr) 2004-02-26
CN1672455A (zh) 2005-09-21
DE10234939A1 (de) 2004-02-19

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