WO2011152463A1 - Procédé de communication mobile, système de communication mobile, station mobile et appareil passerelle - Google Patents

Procédé de communication mobile, système de communication mobile, station mobile et appareil passerelle Download PDF

Info

Publication number
WO2011152463A1
WO2011152463A1 PCT/JP2011/062615 JP2011062615W WO2011152463A1 WO 2011152463 A1 WO2011152463 A1 WO 2011152463A1 JP 2011062615 W JP2011062615 W JP 2011062615W WO 2011152463 A1 WO2011152463 A1 WO 2011152463A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile station
radio access
access network
node
gateway device
Prior art date
Application number
PCT/JP2011/062615
Other languages
English (en)
Japanese (ja)
Inventor
克利 西田
利之 田村
Original Assignee
株式会社エヌ・ティ・ティ・ドコモ
日本電気株式会社
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 株式会社エヌ・ティ・ティ・ドコモ, 日本電気株式会社 filed Critical 株式会社エヌ・ティ・ティ・ドコモ
Publication of WO2011152463A1 publication Critical patent/WO2011152463A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Definitions

  • the present invention relates to a mobile communication method, a mobile communication system, a mobile station, and a gateway device.
  • 2G / 3G wireless access network (UTRAN: Universal Terrestrial Radio Access Network, or GERAN: GSM EDGE Radio Access Network) and LTE (Long TermEvilUlV).
  • UTRAN Universal Terrestrial Radio Access Network
  • GERAN GSM EDGE Radio Access Network
  • LTE Long TermEvilUlV
  • the route for voice communication between UE (User Equipment) # 1 and UE # 2 is changed from the route via E-UTRAN or UTRAN (route for VoIP (Voice over IP) communication).
  • the “SRVCC (Single Radio Voice Call Continuity) method” for switching to a route (route for circuit switching (CS: Circuit Switch) communication) via UTRAN / GERAN is defined (see Non-Patent Document 1).
  • SRVCC improvement method is defined to switch the route for voice communication to and from the route via E-UTRAN to the route via UTRAN / GERAN (see Non-Patent Document 2).
  • SRVCC improvement method a signal necessary for switching a voice communication path between UE # 1 and UE # 2 can be terminated in the visited network of UE # 1, Compared with the SRVCC scheme, it is possible to shorten the communication interruption time caused by the round trip between the visited network of UE # 1 and the home network of UE # 1 of the signal.
  • step 1 UE # 1 transmits “INVITE” to P-CSCF (Proxy-Call Session Control Function) / VATF (Visit Access Transfer Function).
  • P-CSCF Proxy-Call Session Control Function
  • VATF Vehicle Access Transfer Function
  • step 2 the P-CSCF / VATF assigns MGW # 1 to the route.
  • P-CSCF / VATF can use the identification information of MGW # 1 and SRVCC improvement method for I / S-CSCF (Intermission / Serving-Call Session Control Function) and “eSRVCC” “INVITE” including is transmitted.
  • Step 3 the I / S-CSCF transmits “INVITE” including “eSRVCC” to the SCC AS (Service Centralization and Continuity Application Server).
  • step 4 the SCC AS transmits “INVITE” to the I / S-CSCF, and in step 5, the I / S-CSCF transmits “INVITE” to the UE # 2.
  • Step 6 UE # 2 transmits “200 OK (response signal to“ INVITE ”)” to the I / S-CSCF, and in Step 7, the I / S-CSCF transmits to the SCC AS. , "200 OK" is transmitted, and in step 8, the SCC AS transmits "200 OK" to the I / S-CSCF.
  • step 9 the I / S-CSCF transmits the P-CSCF / VATF.
  • “200 OK” is transmitted, and in step 10, the P-CSCF / VATF transmits "200 OK" to UE # 1.
  • a signaling path for voice communication between UE # 1 and UE # 2 is set between UE # 1, P-CSCF / VATF, I / S-CSCF, and UE # 2.
  • a media signal path for voice communication between 1 and UE # 2 is set among UE # 1, MGW # 1, and UE # 2.
  • the present invention has been made in view of the above-described problems.
  • the P-CSCF When a UE applicable to the SRVCC improvement method sets a route for voice communication, the P-CSCF / It is an object of the present invention to provide a mobile communication method, a mobile communication system, a mobile station, and a gateway device that can select a VATF.
  • a first feature of the present invention includes a first radio access network that does not support circuit-switched communication and a second radio access network that supports circuit-switched communication, and the presence of the first mobile station.
  • the voice communication path between the first mobile station and the second mobile station is routed from the path via the first radio access network to the path via the second radio access network at a predetermined node in the service area network.
  • a step A for transmitting application information indicating whether or not the gateway device that has received the application information is capable of transmitting a voice communication path switching instruction to the predetermined node.
  • the present invention includes the step B of notifying the first mobile station of the identification information.
  • a second feature of the present invention includes a first radio access network that does not support circuit-switched communication and a second radio access network that supports circuit-switched communication, and the presence of the first mobile station.
  • the voice communication path between the first mobile station and the second mobile station is routed from the path via the first radio access network to the path via the second radio access network at a predetermined node in the service area network.
  • the mobility management node connected to the first radio access network receives the location registration request signal received from the first mobile station according to the location registration request signal.
  • a third feature of the present invention includes a first radio access network that does not support circuit-switched communication and a second radio access network that supports circuit-switched communication, and the presence of the first mobile station.
  • the voice communication path between the first mobile station and the second mobile station is routed from the path via the first radio access network to the path via the second radio access network at a predetermined node in the service area network.
  • the mobile station functions as the first mobile station and receives a location registration response signal from a gateway device connected to the first radio access network
  • a DHCP request signal to the gateway device, the sound is transmitted to the predetermined node.
  • the switching instruction of the route for communication to acquire the identification information of the switching instruction nodes that can be transmitted.
  • a first radio access network that does not support circuit-switched communication and a second radio access network that supports circuit-switched communication.
  • the voice communication path between the first mobile station and the second mobile station is routed from the path via the first radio access network to the path via the second radio access network at a predetermined node in the service area network.
  • a switching instruction node capable of transmitting a voice communication path switching instruction to the predetermined node. It is configured to select the de, to the first mobile station, and summarized in that is configured to notify identification information of the switching instruction node selected.
  • the P-CSCF adaptable to the SRVCC improvement scheme adaptable to the SRVCC improvement scheme. It is possible to provide a mobile communication method, a mobile communication system, a mobile station, and a gateway device that can select / VATF.
  • FIG. 1 is an overall configuration diagram of a mobile communication system according to a first embodiment of the present invention.
  • FIG. 3 is a sequence diagram illustrating an operation of the mobile communication system according to the first embodiment of the present invention. It is a figure for demonstrating the SRVCC capability display in "Attach Request" and "TAU Request” transmitted with the mobile communication system which concerns on the 1st Embodiment of this invention. It is a sequence diagram explaining operation
  • the mobile communication system accommodates E-UTRAN and UTRAN / GERAN.
  • the mobile communication system includes an eNB (radio base station), an RNC (Radio Network Controller, a radio network controller) in the visited network of UE # 1.
  • NodeB wireless base station
  • BSS not shown
  • MME Mobility Management Entity, mobility management node
  • S-GW Serving-Gateway, serving gateway device
  • P-GW PDN-Gateway
  • PDN gateway device PDN gateway device
  • DHCP Dynamic Host Configuration Protocol
  • P-CSCF / VATF Dynamic Host Configuration Protocol
  • MGW # 1 MSC (Mobile-Service Switching Center), Circuit switch
  • SGSN Server GPRS Support Node, packet switch
  • MSC server MGW # 2
  • MGW # 2 Mobile Network Controller
  • the P-CSCF and the VATF may be provided in the same device or may be provided in separate devices.
  • the VATF may be provided in a device such as P-GW, S-GW, or IBCF (Interconnection Border Control Function described in 3GPP TS23.228, not shown).
  • the mobile communication system includes SCC AS, I / S-CSCF, and the like in the home network of UE # 1.
  • the route for voice communication between UE # 1 and UE # 2 is routed via E-UTRAN or UTRAN (IMS) by the SRVCC method or the SRVCC improvement method. It is possible to switch from a route for VoIP communication) to a route via UTRAN / GERAN (route for circuit-switched communication).
  • IMS E-UTRAN or UTRAN
  • step S1001 UE # 1 transmits “Attach Request” including the SRVCC capability of UE # 1 indicating whether UE # 1 is adaptable to the SRVCC scheme to MME. .
  • the SRVCC capability is displayed by “MS network capability value” in “Attach Request” (for example, refer to 15.5.512 of 3GPP TS 24.008).
  • step S1002 authentication / confidential processing and location registration processing for UE # 1 are performed.
  • the MME determines the subscriber profile of UE # 1 managed by the HSS (Home Subscriber Server), the SRVCC capability of UE # 1, the policy of the home network and the visited network of UE # 1, etc. It is determined whether or not to apply the SRVCC improvement method to UE # 1, and in step S1004, SRVCC improvement method application information indicating whether or not to apply the SRVCC improvement method to UE # 1 is included for S-GW. Send “Create Bearer Request”.
  • HSS Home Subscriber Server
  • step S1005 the S-GW transmits “Create Bearer Request” including SRVCC improvement method application information to the P-GW.
  • the P-GW selects a P-CSCF / VATF that is adaptable to the SRVCC improvement method (that is, a P-CSCF equipped with VATF or a P-CSCF that can cooperate with VATF), and in step S1007, “Create Bearer Response” including the P-CSCF information indicating the identification information of the P-CSCF / VATF is transmitted to the S-GW.
  • a P-CSCF / VATF that is, a P-CSCF equipped with VATF or a P-CSCF that can cooperate with VATF
  • “Create Bearer Response” including the P-CSCF information indicating the identification information of the P-CSCF / VATF is transmitted to the S-GW.
  • step S1008 the S-GW transmits “Create Bearer Response” including the P-CSCF information to the MME.
  • step S1009 the MME transmits “Attach Response” including the P-CSCF information to UE # 1.
  • the UE # 1 determines that the P-CSCF / specified by the P-CSCF information in Step 1 of the procedure for setting the voice communication path between the UE # 1 and the UE # 2 shown in FIG. “INVITE” can be sent to VATF (ie, P-CSCF adaptable to SRVCC improvement scheme), and SRVCC improvement scheme changes such a route from a route via E-UTRAN to UTRAN / GERAN. It is possible to switch to the route via.
  • VATF ie, P-CSCF adaptable to SRVCC improvement scheme
  • the P-CSCF / VATF is configured to instruct MGW # 1 to switch the route for voice communication between UE # 1 and UE # 2.
  • steps S2001 to S2005 are the same as the operations in steps S1001 to S1005 shown in FIG.
  • step S2006 the P-GW associates and holds the identification information of UE # 1 and the SRVCC channel method application information, and transmits “Create Bearer Response” to the S-GW in step S2007.
  • step S2008 the S-GW transmits “Create Bearer Response” to the MME.
  • step S2009 the MME transmits “Attach Response” to the UE # 1.
  • step S2010 UE # 1 transmits a DHCP request signal to the P-GW.
  • UE # 1 instructs to select only P-CSCF / VATF applicable to the SRVCC improvement method in the DHCP request signal, and to simply select P-CSCF in the same manner as a normal IMS terminal. There is.
  • step S2011 the P-GW selects a P-CSCF / VATF that can be applied to the SRVCC improvement method (that is, a P-CSCF equipped with VATF or a P-CSCF that can cooperate with VATF).
  • the P-GW may consider the information set in the DHCP request signal by the UE # 1 in step S2010.
  • the P-GW sends a P-CSCF / VATF adaptable to the SRVCC improvement method from an external DHCP server (that is, a P-CSCF equipped with VATF or a P-CSCF capable of cooperating with VATF). You may acquire the information for selecting.
  • an external DHCP server that is, a P-CSCF equipped with VATF or a P-CSCF capable of cooperating with VATF.
  • the P-GW may consider the information set in the DHCP request signal by the UE # 1 in step S2010.
  • information related to an instruction as to whether or not to select only the P-CSCF / VATF applicable to the SRVCC improvement method set in the DHCP request signal received from the received UE # 1 may be transferred.
  • step S2013 the P-GW transmits a DHCP response signal including P-CSCF information indicating the identification information of the P-CSCF / VATF.
  • step S3001 UE # 1 transmits “TAU Request” including the SRVCC capability of UE # 1 indicating whether UE # 1 is adaptable to the SRVCC scheme to MME. .
  • the SRVCC capability is displayed by “MS network capability value” in “TAU Request” (for example, refer to 15.5.512 of 3GPP TS 24.008).
  • step S3002 authentication / confidential processing and location registration processing for UE # 1 are performed.
  • step S3003 When the MME determines in step S3003 that the UE # 1 is adaptable to the SRVCC scheme, the MME supports the current status of the SRVCC improvement scheme of the P-CSCF connected to the UE # 1, and the UE # 1 In view of the fact that the availability of the SRVCC improvement method is changed, a reattach instruction signal for instructing the UE # 1 to perform the Attach procedure again is transmitted to the UE # 1 as necessary in Step S3004.
  • steps S3005 to S3013 are the same as those in steps S1001 to S1009 shown in FIG.
  • the first feature of the present embodiment is that E-UTRAN (first radio access network that does not support circuit-switched communication) and UTRAN / GERAN (second radio access network that supports circuit-switched communication). And a path for voice communication between the UE # 1 and the UE # 2 in the MGW # 1 (predetermined node) in the visited network of the UE # 1 (first mobile station) is defined as E-UTRAN.
  • a mobile communication method in a mobile communication system to which an SRVCC improvement method (switching method) for switching from a route via UTRAN / GERAN to a route via UTRAN / GERAN is applicable which is an MME (mobile management node) connected to E-UTRAN ) Is connected to E-UTRAN according to the “Attach Request (location registration request signal)” received from UE # 1 -Step A for transmitting SRVCC improvement method application information (application information) indicating whether or not to apply the SRVCC improvement method to UE # 1 to the GW / P-GW (gateway device), and SRVCC improvement method application information P-CSCF indicating identification information of P-CSCF / VATF (switching instruction node) capable of transmitting a voice communication path switching instruction to MGW # 1 by S-GW / P-GW that has received It has a gist of having a process B for notifying information to UE # 1.
  • step A the MME transmits SRVCC improvement method application information to the S-GW / P-GW by “Create Bearer Request (bearer generation request signal)”.
  • step B the S-GW / P-GW transmits the P-CSCF information to the MME by “Create Bearer Response (bearer generation response signal)”, and the MME transmits the “Attach Response” to the UE # 1.
  • P-CSCF information may be transmitted by “(location registration response signal)”.
  • step A the MME transmits SRVCC improvement method application information to the S-GW / P-GW by “Create Bearer Request”, and in step B, the S-GW The / P-GW may transmit P-CSCF information using a DHCP response signal to the DHCP request signal from UE # 1.
  • the second feature of the present embodiment is provided with E-UTRAN and UTRAN / GERAN.
  • MGW # 1 in the visited network of UE # 1 between UE # 1 and UE # 2
  • the SRVCC improvement method application information is transmitted to the S-GW / P-GW connected to the E-UTRAN, and the S-VCC that has received the SRVCC improvement method application information is received.
  • the gist is that the GW / P-GW is configured to notify the UE # 1 of the P-CSCF information.
  • the MME is configured to transmit SRVCC improvement method application information to the S-GW / P-GW by “Create Bearer Request”, and the S-GW / P -The GW is configured to transmit P-CSCF information to the MME through "Create Bearer Response”.
  • the MME transmits P-CSCF information to the UE # 1 through "Attach Response". It may be configured to.
  • the MME is configured to transmit SRVCC improvement method application information to the S-GW / P-GW by “Create Bearer Request”, and the S-GW / P -GW may be configured to transmit P-CSCF information by a DHCP response signal in response to a DHCP request signal from UE # 1.
  • the third feature of the present embodiment is provided with E-UTRAN and UTRAN / GERAN.
  • MGW # 1 in the visited network of UE # 1 between UE # 1 and UE # 2 A UE functioning as UE # 1 in a mobile communication system to which an SRVCC improvement method for switching a route for voice communication from a route via E-UTRAN to a route via UTRAN / GERAN can be applied,
  • the P-CSCF information is acquired by transmitting a DHCP request signal to the S-GW / P-GW.
  • a fourth feature of the present invention includes E-UTRAN and UTRAN / GERAN, and in MGW # 1 in the visited network of UE # 1, voice between UE # 1 and UE # 2
  • a P-GW connected to an E-UTRAN in a mobile communication system to which an SRVCC improvement method for switching a communication route from a route via E-UTRAN to a route via UTRAN / GERAN can be applied.
  • the P-CSCF is selected, and the UE # 1 is notified of the P-CSCF indicating the identification information of the selected P-CSCF.
  • the gist is that it is configured.
  • MSC server MGW # 1, MGW # 2, MME, S-GW, P-GW, P-CSCF / VATF, I / S-CSCF, SCC AS, SGSN, MSC, UE # 1, UE # 2, operations of HSS, DHCP server, RNC, NodeB, eNB may be implemented by hardware, may be implemented by a software module executed by a processor, or may be implemented by a combination of both .
  • Software modules include RAM (Random Access Memory), flash memory, ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electronically Erasable and Programmable, Removable ROM, and Hard Disk). Alternatively, it may be provided in a storage medium of an arbitrary format such as a CD-ROM.
  • Such a storage medium is connected to the processor so that the processor can read and write information from and to the storage medium. Further, such a storage medium may be integrated in the processor.
  • Such a storage medium and processor may be provided in the ASIC.
  • the ASIC includes MSC server, MGW # 1, MGW # 2, MME, S-GW, P-GW, P-CSCF / VATF, I / S-CSCF, SCC AS, SGSN, MSC, UE # 1, UE # 2, HSS, DHCP server, RNC, NodeB, eNB may be provided.
  • the storage medium and the processor include a discrete component such as an MSC server, MGW # 1, MGW # 2, MME, S-GW, P-GW, P-CSCF / VATF, I / S-CSCF, SCC AS, SGSN, It may be provided in the MSC, UE # 1, UE # 2, HSS, DHCP server, RNC, NodeB, and eNB.
  • a discrete component such as an MSC server, MGW # 1, MGW # 2, MME, S-GW, P-GW, P-CSCF / VATF, I / S-CSCF, SCC AS, SGSN.

Landscapes

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

Abstract

Un procédé de communication mobile comprend : une étape A au cours de laquelle une MME transmet à une passerelle S-GW/P-GW, en réponse à une « demande de rattachement » reçue d'un UE (#1), des informations d'application de système d'amélioration SRVCC indiquant d'appliquer ou non un système d'amélioration SRVCC à l'UE (#1) ; et une étape B au cours de laquelle la passerelle S-GW/P-GW ayant reçu les informations d'application de système d'amélioration SRVCC notifie à l'UE (#1) des informations P-CSCF indiquant des informations d'identification d'un P-CSCF/VATF.
PCT/JP2011/062615 2010-06-04 2011-06-01 Procédé de communication mobile, système de communication mobile, station mobile et appareil passerelle WO2011152463A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010129112A JP2011259015A (ja) 2010-06-04 2010-06-04 移動通信方法、移動通信システム、移動局及びゲートウェイ装置
JP2010-129112 2010-06-04

Publications (1)

Publication Number Publication Date
WO2011152463A1 true WO2011152463A1 (fr) 2011-12-08

Family

ID=45066821

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2011/062615 WO2011152463A1 (fr) 2010-06-04 2011-06-01 Procédé de communication mobile, système de communication mobile, station mobile et appareil passerelle

Country Status (2)

Country Link
JP (1) JP2011259015A (fr)
WO (1) WO2011152463A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108235428A (zh) * 2016-12-21 2018-06-29 中国移动通信集团河南有限公司 实现ue注册p-cscf的方法、mme设备及pgw设备

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010052589A2 (fr) * 2008-11-10 2010-05-14 Alcatel Lucent Support de services de domaine cs sur un système mobile par paquets uniquement
WO2010052918A1 (fr) * 2008-11-07 2010-05-14 パナソニック株式会社 Système de commande de transfert, terminal utilisateur, appareil de relais de signalisation et appareil de commande de session

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010052918A1 (fr) * 2008-11-07 2010-05-14 パナソニック株式会社 Système de commande de transfert, terminal utilisateur, appareil de relais de signalisation et appareil de commande de session
WO2010052589A2 (fr) * 2008-11-10 2010-05-14 Alcatel Lucent Support de services de domaine cs sur un système mobile par paquets uniquement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108235428A (zh) * 2016-12-21 2018-06-29 中国移动通信集团河南有限公司 实现ue注册p-cscf的方法、mme设备及pgw设备
CN108235428B (zh) * 2016-12-21 2021-03-05 中国移动通信集团河南有限公司 实现ue注册p-cscf的方法、mme设备及pgw设备

Also Published As

Publication number Publication date
JP2011259015A (ja) 2011-12-22

Similar Documents

Publication Publication Date Title
JP4944232B2 (ja) 移動通信方法及び移動通信システム
US9544821B2 (en) Mobile communication system
US9380498B2 (en) Method and device for handling handover of a communications service
US8780864B2 (en) Method and device for handling handover of a communications service
US20180007609A1 (en) Mobile communication method and mobile communication system
WO2012108423A1 (fr) Procédé de communications entre mobiles et nœud de gestion mobile
US8675609B2 (en) Mobile communication method, mobility management node, serving gateway apparatus, packet data network gateway apparatus, policy controller, and packet switch
JP5438042B2 (ja) 移動通信方法、加入者管理サーバ及びサーバ
US20130321557A1 (en) Mobile communication method
JP2012100176A (ja) 移動通信方法及び移動管理ノード
WO2011152463A1 (fr) Procédé de communication mobile, système de communication mobile, station mobile et appareil passerelle
US9363295B2 (en) Mobile communication method and application server apparatus
JP5615194B2 (ja) 移動通信方法及びノード
JP2011233987A (ja) 移動通信システム及びサーバ装置
JP2011223280A (ja) 移動通信方法、移動通信システム、サーバ、移動管理ノード及びパケット交換機
JP2011211661A (ja) 移動通信方法及び移動通信システム

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: 11789865

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: 11789865

Country of ref document: EP

Kind code of ref document: A1