WO2009021394A1 - Procédé et dispositif de transmission/réception de canal mcch d'accès lte - Google Patents

Procédé et dispositif de transmission/réception de canal mcch d'accès lte Download PDF

Info

Publication number
WO2009021394A1
WO2009021394A1 PCT/CN2008/001295 CN2008001295W WO2009021394A1 WO 2009021394 A1 WO2009021394 A1 WO 2009021394A1 CN 2008001295 W CN2008001295 W CN 2008001295W WO 2009021394 A1 WO2009021394 A1 WO 2009021394A1
Authority
WO
WIPO (PCT)
Prior art keywords
mcch
information
control
service
control information
Prior art date
Application number
PCT/CN2008/001295
Other languages
English (en)
Chinese (zh)
Inventor
Hua Chao
Yu Chen
Original Assignee
Alcatel Shanghai Bell Co., Ltd.
Alcatel Lucent
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 Alcatel Shanghai Bell Co., Ltd., Alcatel Lucent filed Critical Alcatel Shanghai Bell Co., Ltd.
Publication of WO2009021394A1 publication Critical patent/WO2009021394A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present invention relates to MBMS, and more particularly, to a method and a transmitting apparatus for transmitting MCCH control information for an evolved MBMS (EMBMS).
  • EMBMS evolved MBMS
  • the present invention also relates to a method and a receiving device for receiving MCCH control information for an evolved MBMS. Background technique
  • MBMS Multimedia Broadcast/Multicast Service
  • 3GPP Rel. Service refers to a point-to-multipoint service where a data source sends data to multiple users, thereby realizing the evolution of resources (including core network and access network), and implementing as many and identical needs as possible with as few resources as possible.
  • the service of multimedia users is a version introduced in 3GPP Rel. Service refers to a point-to-multipoint service where a data source sends data to multiple users, thereby realizing the evolution of resources (including core network and access network), and implementing as many and identical needs as possible with as few resources as possible. The service of multimedia users.
  • MBMS mobile broadband
  • MCCH MBMS control channel
  • MTCH MBMS traffic channel
  • MSCH MBMS scheduling channel
  • the MCCH channel needs to be notified in advance in the cell because it needs to notify the UE about the relevant control information of the MBMS service in time.
  • EMBMS Evolution of MBMS
  • its service data is combined on the air interface using the MBMS Single Frequency Network. That is, for the same service, the service data transmitted by different base stations (eNBs) is designed to transmit the same content at the same time, so that the user equipment (UE) may receive physics with the same content from multiple base stations on the air interface. With the natural superposition of the signal, the received signal-to-noise ratio is multiplied.
  • a set of cells that can implement MBSFN transmission is referred to as an MBSFN area.
  • the corresponding service data uses a multi-cell transmission mode in the access network. Service data that does not participate in MBSFN transmission uses a single cell transmission mode in the access network.
  • the function of the EMBMS control channel MCCH has the functions of MCCH and MSCH in the Rel6 version, and the function of the MTCH is unchanged.
  • the MCCH channel of EMBMS is designed to perform MBSFN merging of MCCH information as much as possible.
  • Some companies such as Nortel et al. have proposed a scheme for the MCCH hierarchy of EMBMS. However, this scheme is based on the idea that each MBSFN area has an MCCH for multi-cell transmission, which is not practical due to the following disadvantages: - In a cell that is simultaneously covered by multiple MBSFN areas, the network needs to create an MCCH for multi-cell transmission for each MBSFN area, and each MCCH has only a limited signaling load, and the transmission efficiency is low;
  • the default MCCH of the cell needs to carry the configuration information of each MCCH for multi-cell transmission, which brings a large amount of unnecessary control signaling load to the default MCCH of the cell;
  • the number of MCCHs that the UE can receive simultaneously is limited compared to the number of MBMS services in the multi-cell transmission mode being unrestricted. This will result in the UE may not be able to receive control information for all services that have subscribed or are of interest.
  • the present invention has been made in order to overcome the above drawbacks.
  • the present invention provides a method and a transmitting device for transmitting MCCH control information for EMBMS.
  • the present invention proposes a method for transmitting MCCH control information in an EMBMS, in which MCCH is classified into three types, namely, characteristics of each type of MCCH of N-MCCH, M-MCCH, and S-MCCH and carried by
  • the types of information are defined as follows:
  • the N-MCCH is the default MCCH of each EMBMS cell, that is, all cells within the service service area (SA) of an EMBMS service need to send corresponding information units on the N-MCCH.
  • the resource allocation of the N-MCCH is determined by the eNB (base station).
  • the configuration information of the N-MCCH is carried by the cell system broadcast message.
  • the information carried by the N-MCCH includes:
  • o Service transmission mode multi-cell or single cell
  • - S-MCCH Single Cell Service MCCH (Single-cell MCCH)
  • the S-MCCH is used to carry control information for all single cell services in the current cell, and its configuration and The scheduling information is carried by the N-MCCH.
  • the information carried by the S-MCCH includes:
  • RB Radio Bearer
  • the M-MCCH is used to carry control information for all multi-cell services in the current cell, and its configuration and
  • ° Scheduling information is carried by the N-MCCH.
  • the MCE or other central node e.g., Operation and Maintenance Node, O&M
  • O&M Operation and Maintenance Node
  • the information carried by the M-MCCH includes -
  • general information of the EMBMS that is, information common to all EMBMS services, for example, frequency information, timer information, and trigger information, etc.
  • a cell system broadcast message or an N-MCCH message may be carried by a cell system broadcast message or an N-MCCH message.
  • a control information transmitting apparatus for an EMBMS comprising: an MCCH (EMBMS Control Channel) control information forming apparatus, configured to form MCCH control information to be transmitted in the local cell, and according to a change of a service state, To update the control information sent on the MCCH; the MCCH control information classification device is configured to classify the control information, and divide the control information into N-MCCH configuration information, N-MCCH announcement information, S-MCCH single cell service control information, and M-MCCH multi-cell service control information; MCCH control message constructing apparatus for constructing classified control information into hierarchical cell system broadcast messages, N-MCCH, M according to the present invention according to the MCCH hierarchical structure of the present invention - MCCH and S-MCCH control messages; and MCCH control message transmitting means for transmitting said cell system broadcast message, N-MCCH, S-MCCH, M-MCCH control message over the air interface.
  • the M-MCCH information is applied with an MBSFN
  • a base station including the above-described control information transmitting apparatus.
  • an MCCH control information receiving apparatus for an EMBMS including: a cell system broadcast message reading apparatus, configured to read a cell system broadcast message, and read a configuration of the N-MCCH from a cell system broadcast message.
  • the N-MCCH information reading device is configured to read the information on the N-MCCH according to the N-MCCH configuration information, and obtain an available MBMS service list, where the information on the N-MCCH includes the configuration and scheduling information of the S-MCCH.
  • M-MCCH configuration and scheduling information S-MCCH information reading means for reading information on the S-MCCH according to the configuration and scheduling information of the S-MCCH; and M-MCCH message reading means for The information on the M-MCCH is read according to the configuration and scheduling information of the M-MCCH.
  • a user equipment including the above-described control information receiving apparatus.
  • the UE can quickly obtain the available services of the current cell by reading the service list in the notification! CH (that is, the service is in a live start state or an ongoing state). And for the N-MCCH, the M-MCCH The S-MCCH configuration information is less. In addition, for the UE, in a cell, no matter the number of received services, at most three MCCH channels need to be received, so the receiving capability of the UE is not threatened.
  • 1 is a layering of MCCH channels and division of information carried on respective channels in accordance with the present invention
  • FIG. 2 is a detail of the allocation of MCCH control information in accordance with the present invention.
  • FIG. 3 is a system block diagram of a base station side for implementing MCCH control information transmission according to the present invention
  • FIG. 5 is a system block diagram of the user equipment side for implementing MCCH control information reception in accordance with the present invention. detailed description '
  • the control information transmitted on the MCCH can be divided into cell-specific information and MBSFN-specific information according to the principle of whether it can be merged.
  • the cell-specific information refers to the information sent by the cell, that is, the content of such information may be different in each cell, and thus cannot be merged;
  • the MBSFN proprietary information is the information of the MBSFN area as the sending unit. This type of information transmits the same content in all cells within the same MBSFN area and thus can be merged within the MBSFN area.
  • the control information sent on the MCCH generally includes:
  • the network can provide different EMBMS services in different cells; on the other hand, even for the same service, the UE's requested UE activity is Different cells can also be different;
  • - UE behavior indication which means: for example counting/recounting, and voting indication.
  • counting and voting are applied to EMBMS.
  • Counting/recounting can be used for the selection and switching of traffic transmission modes, so the counting/recounting operation is cell-specific activity, and different cells may use different probability factors or be performed by performing different numbers of times.
  • the voting process can be used for dynamic MBSFN control, so voting can be MBSFN-specific activities within the MNSFN area;
  • This letter Information can be used to support continuity control of the business. In a dynamic MBSFN scenario, such information is changeable according to the progress state of the service, and thus the information is also cell-specific information;
  • the RB configuration information is cell-specific, and for the service of the multi-cell transmission mode, the RB configuration information is MBSFN-specific.
  • the RB configuration information is MBSFN-specific.
  • General information about MBMS can be mapped to MCCH or BCCH (Broadcast Control Channel). If general information is mapped to the MCCH, the general information cannot be combined at all. If the general information is mapped to the BCCH, the general information can be merged when all the relevant cells that can be combined satisfy the synchronization requirement and the relevant cells use the same scrambling code. It is assumed that only mobile TV services are available in the early stages of EMBMS service deployment. Then, the merging of BCCHs that implement EMBMS information is achievable.
  • the present invention divides the MCCH into three types of MCCH, namely, N-MCCH, S-MCCH, and M-MCCH, and transmits according to the MCCH.
  • the attributes of the control information are distributed on the three MCCHs to achieve the object of the present invention.
  • the available MBMS service list and service status are sent in the N-MCCH (Announcement MCCH) of each EMBMS cell.
  • M-MCCH One and only one multi-cell service MCCH (referred to as M-MCCH in the present invention) is created in the EMBMS cell to carry the RB configuration information of the multi-cell service in the cell.
  • the resource allocation and scheduling information of the M-MCCH is determined by a central node (for example, MCE or O&M).
  • One and only one single cell service MCCH is created in the EMBMS cell (the resource allocation and scheduling information referred to as S-MCCH S-MCCH in the present invention is determined by the eNB (base station).
  • the UE User Equipment
  • the UE can quickly obtain the available services of the current cell by reading the service list in the MCCH (that is, the service is in the session start state or the ongoing state). And for N-MCCH, M-MCCH and S-MCCH configuration information is less.
  • the UE For the UE to receive the maximum number of services in a cell, it is necessary to receive at most three MCCH channels, which does not pose a threat to the UE's receiving capability.
  • the information carried by the three MCCHs is as follows:
  • the information carried by the N-MCCH includes:
  • o Service transmission mode multi-cell or single cell O If the indicated service is placed on a dedicated carrier frequency, there is a dedicated carrier frequency indication
  • the information carried by the S-MCCH for the single cell service includes:
  • the information carried by the M-MCCH for the multi-cell service includes:
  • the MTCH scheduling information of the indicated multi-cell service includes a control information transmitting device according to the present invention in the base station, and the device, as shown in FIG. 3, includes: MCCH (EMBMS) Control channel) control information forming apparatus 10, configured to form MCCH control information that needs to be transmitted in the local cell, and update control information sent on the MCCH according to a change in service status; 1 CH control information classification device 12, for The MCCH control information is classified, and the control information is divided into N-MCCH configuration information, N-MCCH advertisement information, S-MCCH single cell service control information, and M-MCCH multi-cell service control information; and MCCH control message forming device 14 is configured to According to the MCCH hierarchical structure of the present invention, the classified control information is constructed as a hierarchical cell system broadcast message, N-MCCH, M-MCCH, and S-MCCH control message according to the present invention; and MCCH control message transmitting means 16, For transmit
  • the MCCH information sending method of the present invention includes: At step S101, the eNB receives a session start message of the MBMS service. Then, at step S102, the eNB determines whether the cell managed by itself belongs to the service area of the service, and if so, at S103, the MCCH control information forming apparatus 10 Forming service announcement information for the service.
  • the MCCH control information classifying means 12 divides the service state information into the N-MCCH control information, and the MCCH control information constructing means 14 constructs the divided control information into the hierarchical control message according to the present invention according to the MCCH hierarchical structure of the present invention.
  • an MBMS-capable cell may create an N-MCCH at initialization, and send a cell system broadcast message including N-MCCH configuration information on the BCCH; if not, the eNB does not Do anything.
  • the eNB determines whether the service is a multi-cell transmission service. If the service is a multi-cell transmission service, then at step S106, the MCCH control message transmitting apparatus 16 in the eNB transmits the M-MCCH including the MTCH RB configuration message of the multi-cell service and the scheduling message on the already created M-CCH. Control information. Specifically, if the service is the "" multi-cell transmission service of the cell, the eNB needs to first create an M-MCCH according to the M-MCCH resource allocation information obtained from the MCE or other central node.
  • the eNB may need to determine the MTCH RB configuration information according to the result of the advertising process, and send the MTCH RB configuration message including the single cell service and the S-MCCH control information of the scheduling message on the already created S-MCCH.
  • the service is the first single cell transmission service of the current cell, the eNB needs to create the S-MCCH first, and those skilled in the art can easily know how to create the S-MCCH, which will not be described in detail herein.
  • step S107 if the eNB receives the session end indication, the process is terminated.
  • the Rel6 version of the RRC specification defines the notification procedure only for changes to one or more MBMS services, and the notification procedure does not include MCCH information for stabilizing MBMS services.
  • the present invention proposes to redefine the notification process so that the notification process includes: transmitting service state information for both the start of the session and the ongoing service.
  • the service status information includes session start/stop, count/recount, RB determination, RB reconfiguration, and the like.
  • the eNB determines whether the control information of the service needs to be changed according to the service state information, and if necessary, updates the transmission on the three MCCHs in step S109.
  • the control message repeats the process beginning with step S103; if no change is required, it directly returns to step S103 to periodically transmit the constructed MCCH control message on the three MCCHs.
  • the apparatus includes four reading devices, a cell system broadcast message reading device 26, an N-MCCH reading device 20, an S-MCCH reading device 22, and an M-MCCH reading device 24, respectively.
  • the cell system broadcast message reading means 26 is configured to first read the BCCH, and obtain the MBMS general information and the configuration information of the N-MCCH from the cell system broadcast message.
  • the N-MCCH reading device 20 is configured to read the N-MCCH configuration information read by the message reading device 26 according to the cell system. Take the information on the N-MCCH.
  • the SHCH reading device 22 further reads the S-CCH to obtain the corresponding information through the configuration and scheduling information of the S-MCCH in the information carried by the N-MCCH. Traffic channel MTCH information. If the user equipment is interested in the multi-cell service indicated by the N-MCCH, the M-MCCH reading device 24 further reads the M-MCCH by using the configuration and scheduling information of the M-MCCH in the information carried by the N-MCCH to obtain Corresponding traffic channel MTCH information.
  • a base station including the above-described control information transmitting apparatus, and a user equipment including the above-described control information receiving apparatus.
  • the UE can quickly obtain the available service of the current cell by reading the service list in the MCCH (that is, the service is in the session start state or the ongoing state). And for the N-1 CH, the M-MCCH and The S-MCCH configuration information is less. In addition, for a UE, in a cell, regardless of the number of received services, at most three MCCH channels need to be received, and thus the receiving capability of the UE is not threatened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé permettant la transmission de l'information de commande de canal MCCH, comprenant les étapes suivantes: la classification de l'information de commande en information de configuration N-MCCH, information de notification N-MCCH et information de commande de service de cellule unique S-MCCH et information de commande de service de cellules multiples M-NCCH ; la construction du message classifié sous forme de message de diffusion de système cellulaire multicouche, du message de commande N-MCCH, M-MCCH et S-MCCH ; et sur l'interface radio, la transmission dudit message de diffusion de système cellulaire, de message de commande multicouche N-MCCH, S-MCCH, M-MCCH sur les canaux BCCH, N-MCCH, M-MCCH and S-MCCH respectivement. L'invention concerne également un procédé permettant la réception de l'information de commande de EMBMS, comprenant les étapes suivantes : la lecture du message de diffusion de système cellulaire et la lecture de l'information de configuration N-MCCH à partir du message de diffusion de système cellulaire; l'obtention de la liste de services MBMS disponibles par la lecture de l'information sur le N-MCCH ; le cas échéant en service unicellulaire, ensuite la lecture de l'information sur le S-MCCH ; le cas échéant dans le service unicellulaire, suivie de la lecture sur le M-MCCH.
PCT/CN2008/001295 2007-08-15 2008-07-09 Procédé et dispositif de transmission/réception de canal mcch d'accès lte WO2009021394A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN2007100450253A CN101370238B (zh) 2007-08-15 2007-08-15 基于lte的mcch的发送/接收方法和设备
CN200710045025.3 2007-08-15

Publications (1)

Publication Number Publication Date
WO2009021394A1 true WO2009021394A1 (fr) 2009-02-19

Family

ID=40350356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/001295 WO2009021394A1 (fr) 2007-08-15 2008-07-09 Procédé et dispositif de transmission/réception de canal mcch d'accès lte

Country Status (2)

Country Link
CN (1) CN101370238B (fr)
WO (1) WO2009021394A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013520887A (ja) * 2010-02-22 2013-06-06 中国移▲動▼通信集▲団▼公司 ｅＭＢＭＳサービスをサポートする方法、ＭＣＣＨ修正通知送信方法及びデバイス

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101841770B (zh) * 2009-03-18 2013-09-18 电信科学技术研究院 多媒体广播组播业务控制信息发送、接收方法及设备
CN101841771B (zh) * 2009-03-18 2013-05-22 电信科学技术研究院 实现单小区多媒体广播组播业务传输的方法及装置
WO2010124441A1 (fr) * 2009-04-27 2010-11-04 深圳华为通信技术有限公司 Procédé d'obtention et d'indication d'informations mcch et équipement utilisateur et station de base correspondants
CN101877823B (zh) * 2009-04-28 2012-09-26 电信科学技术研究院 一种多播广播业务的调度方法及装置
CN101931879B (zh) * 2009-06-19 2015-08-12 中兴通讯股份有限公司 一种多播控制信道信息的传输方法及其设备
CN102026095B (zh) * 2009-09-17 2013-08-14 电信科学技术研究院 一种MBMS Notification的传输方法、系统及装置
CN102036175B (zh) * 2009-09-29 2014-10-22 中兴通讯股份有限公司 一种mbms寻呼指示信息的传输方法及网络侧设备
CN102036178B (zh) * 2009-09-29 2015-08-19 中兴通讯股份有限公司 一种发送、传输mbms通知指示信息的系统及方法
CN102035807B (zh) * 2009-09-30 2015-06-03 中兴通讯股份有限公司 一种多媒体广播多播业务通知信息的传输方法及系统
CN102170610B (zh) * 2010-02-25 2013-10-16 电信科学技术研究院 发送指示信息和接收mbms的方法、系统及装置
CN102264031B (zh) * 2010-05-25 2015-05-20 中兴通讯股份有限公司 一种为多播控制信道分配无线资源的方法及系统
CN102387472B (zh) * 2010-09-02 2016-03-30 中兴通讯股份有限公司 用户设备及其接收多媒体广播和组播业务的方法
CN106470482B (zh) * 2015-08-17 2021-11-02 中兴通讯股份有限公司 Sc-mcch的资源配置方法、系统及装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1774124A (zh) * 2004-11-10 2006-05-17 华为技术有限公司 一种多媒体广播/组播业务中业务控制信息的传输方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1774124A (zh) * 2004-11-10 2006-05-17 华为技术有限公司 一种多媒体广播/组播业务中业务控制信息的传输方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ALCATEL -LUCENT: "MCCH channel design", 3GPP RAN WG2 # 59, R2-073132, 24 August 2007 (2007-08-24), XP050135859 *
LG ELECTRONICS: "MCCH Channel Structure and Transmission", 3GPP TSG-RAN WG2 # 58BIS, R2-072814, 29 June 2007 (2007-06-29), XP050135591 *
NORTEL: "Hierarchical MCCH", 3GPP TSG RAN WG2 # 58BIS, R2-072477, 29 June 2007 (2007-06-29), pages 1 - 4, XP050135303 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013520887A (ja) * 2010-02-22 2013-06-06 中国移▲動▼通信集▲団▼公司 ｅＭＢＭＳサービスをサポートする方法、ＭＣＣＨ修正通知送信方法及びデバイス
US8942156B2 (en) 2010-02-22 2015-01-27 China Mobile Communications Corporation Method for supporting enhanced multimedia broadcast multicast service (EMBMS), method and device for sending MBMS control channel (MCCH) modification notice

Also Published As

Publication number Publication date
CN101370238A (zh) 2009-02-18
CN101370238B (zh) 2012-08-22

Similar Documents

Publication Publication Date Title
WO2009021394A1 (fr) Procédé et dispositif de transmission/réception de canal mcch d'accès lte
CN102378113B (zh) 一种多媒体广播多播业务传输方式的转换方法和系统
EP2134103B1 (fr) Procédé de programmation pour mbms, dispositif de programmation et station de base comprenant ce dispositif
JP5610609B2 (ja) 無線送信方法、無線送信装置及び基地局装置
EP2755408B1 (fr) Procédé et dispositif pour recevoir un service de diffusion non sélective/sélective multimédia
CN103428637B (zh) Mbms的处理方法及装置、接收方法、装置及系统
US20060059407A1 (en) Network system, data transmission device, terminal device and multicasting method
WO2011147237A1 (fr) Procédé et dispositif permettant de transmettre des informations de commande de service de diffusion/multidiffusion de contenu multimédia
Gruber et al. Multimedia broadcast multicast service: New transmission schemes and related challenges
CN101120523B (zh) 发送mbms信息的装置和方法
CN107231619A (zh) 一种4G系统中增强eMBMS服务连续性的方法
CN105635984A (zh) 指示信息处理方法及装置
CN105635985A (zh) 确定挂起业务的方法及装置、指示信息处理方法及装置
CN103108283B (zh) 一种实现mbms业务/会话获取的设备、系统及方法
CN102651847B (zh) 一种网元获取用户设备的接收状况信息的方法及系统
CN102833684B (zh) 一种多媒体广播多播业务传输方法、系统及用户设备
WO2014153705A1 (fr) Procédé et dispositif de traitement d'un service de cellule à nouveau type de porteuse et système de communication
CN100479414C (zh) 多媒体广播/组播业务中控制信道上接入信息的传输方法
WO2012010049A1 (fr) Procédé et système de distribution de services mbms
WO2011143986A1 (fr) Procédé, système et terminal pour mettre en œuvre un service de diffusion/multidiffusion multimédia
CN102104836A (zh) Mbms业务接收状态的上报方法和设备
CN104955086A (zh) Mbms差错处理方法、通信节点及通信系统
JP6462124B2 (ja) グループ通信の方法および装置
CN101998266B (zh) 一种传输多播控制信道的信息的方法和系统
WO2012122952A1 (fr) Procédé, appareil et système pour commande d'activation

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08773032

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08773032

Country of ref document: EP

Kind code of ref document: A1