WO2013024346A1 - Procédé de contrôle d'une transmission autonome sur la liaison montante d'un équipement d'utilisateur dans une cellule secondaire - Google Patents

Procédé de contrôle d'une transmission autonome sur la liaison montante d'un équipement d'utilisateur dans une cellule secondaire Download PDF

Info

Publication number
WO2013024346A1
WO2013024346A1 PCT/IB2012/001658 IB2012001658W WO2013024346A1 WO 2013024346 A1 WO2013024346 A1 WO 2013024346A1 IB 2012001658 W IB2012001658 W IB 2012001658W WO 2013024346 A1 WO2013024346 A1 WO 2013024346A1
Authority
WO
WIPO (PCT)
Prior art keywords
secondary cell
user equipment
uplink transmission
scell
autonomous uplink
Prior art date
Application number
PCT/IB2012/001658
Other languages
English (en)
Inventor
Tao Yang
Seau Sian Lim
Original Assignee
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 Lucent filed Critical Alcatel Lucent
Publication of WO2013024346A1 publication Critical patent/WO2013024346A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
    • H04W56/0045—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by altering transmission time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers

Definitions

  • the present invention relates to wireless communication based on carrier aggregation technology, and more particularly relates to a method of controlling autonomous uplink transmission of a user equipment in a secondary cell.
  • a user equipment In a communication system, a user equipment (UE) shall maintain uplink synchronization with a base station (BS) such as eNodeB by means of time alignment (TA), namely that uplink signals sent by all UEs served by the BS shall arrive at the BS simultaneously, so as to avoid causing significant interference to other UEs.
  • BS base station
  • TA time alignment
  • a BS can configure multiple component carriers (CCs) for a UE so that the UE may communicate with the BS through these component carriers, in which one component carrier is called primary cell (Pcell) and other component carriers are called secondary cell (Scell).
  • Pcell primary cell
  • Scell secondary cell
  • the TA of each of these cells may be different due to a different network deployment. For example, there is no relay equipment in some cells whilst there are one or more relay equipments in some cells.
  • a BS configures a UE to perform autonomous uplink transmission (UL Tx) such as periodically sending a sounding reference signal (SRS) in the cell, and it is further specified that once a UE receives a MAC (Media Access Control) CE (control element) for activating a certain cell, the UE shall start autonomous UL Tx in 8 ms.
  • UL Tx autonomous uplink transmission
  • SRS sounding reference signal
  • TA group Different from 3 GPP Release 10 in which all cells of a UE share same TA, the concept of TA group is proposed in 3GPP Release 11. All cells of a UE are grouped in one or more TA groups, and all cells in each TA group share same TA. TA groups are classified into two classes: Pcell group including a Pcell and Scell group including no Pcell.
  • a BS configures a certain Scell for a UE, it is possible that this Scell does not belong to any existing TA group and thus does not have valid TA, namely that uplink synchronization is not achieved.
  • the BS shall firstly activate this newly configured Scell and then ask the UE to perform random access on PRACH (Physical Random Access Channel) in this Scell so as to obtain valid TA.
  • PRACH Physical Random Access Channel
  • the UE starts to perform autonomous UL Tx in 8 ms once the Scell is activated.
  • this Scell has not obtained valid TA yet, the autonomous UL Tx of this UE in this Scell will cause significant interference to other UEs.
  • the TAT runs based on the Pcell group to guarantee the validity of the TA of the Pcell.
  • the UE adjusts the TA according to the received command and restarts the TAT; however, when receiving a TA command of a Scell group, the UE adjusts the TA according to the received command without restarting the TAT.
  • the TA of the UE is deemed to be not valid, namely that the UE loses uplink synchronization; if the TAT has not expired yet, the UE assumes that the TA of the Pcell and the TA of Scell are still valid.
  • the TAT since the TAT only runs based on the Pcell group, the following scenario may occur: although the TA of a Scell group is not valid anymore because no TA command of the Scell has been received for a long time, the TAT does not expires because the TA commands of the Pcell are received from time to time and thus the UE mistakenly assumes that the TA of the Scell is still valid and continuously performs autonomous UL Tx, which causes significant interference to other UEs.
  • a method of controlling, in a base station of a wireless communication network that is based on carrier aggregation transmission, autonomous uplink transmission of a user equipment in a secondary cell served by said base station which comprises the following steps: A. judging whether said user equipment has valid time alignment in said secondary cell; B. sending, to said user equipment, a first message for controlling said user equipment not to perform said autonomous uplink transmission in said secondary cell, if said user equipment has no valid time alignment in said secondary cell.
  • a method of controlling, in a user equipment of a wireless communication network that is based on carrier aggregation transmission, autonomous uplink transmission of said user equipment in a secondary cell which comprises the following steps: a. receiving, from a base station serving said secondary cell, a first message for controlling said user equipment not to perform said autonomous uplink transmission in said secondary cell; b. not performing said autonomous uplink transmission in said secondary cell according to the received first message.
  • a base station controls a user equipment not to perform autonomous uplink in a secondary cell once the base station detects that the user equipment does not have valid time alignment in the secondary cell and thus significant interference to uplink communication of other user equipment(s) caused by the autonomous uplink transmission can be avoided.
  • Figure 1 is a flowchart of the method for controlling autonomous UL Tx of a UE in a Scell according to an embedment of the present invention
  • Figure 2 is a flowchart of the method for obtaining valid TA according to an embodiment of the present invention
  • Figure 3 is a flowchart of the method for controlling autonomous UL Tx of a UE in a Scell according to an embedment of the present invention, wherein the Scell has not been configured yet;
  • Figure 4 is a flowchart of the method for controlling autonomous UL Tx of a UE in a Scell according to an embedment of the present invention, wherein the Scell has been configured;
  • Figure 5 is a flowchart of the method for controlling autonomous UL Tx of a UE in a Scell according to an embedment of the present invention, wherein the Scell has not been activated yet;
  • Figure 6 is a flowchart of the method for controlling autonomous UL Tx of a UE in a Scell according to an embedment of the present invention, wherein the Scell is already activated;
  • Figure 7 is a schematic diagram of the first and second predetermined information in MAC CE according to an embedment of the present invention; wherein, the identical or similar reference signs indicate the identical or similar procedure or apparatus/modules.
  • Figure 1 shows a flowchart of the method for controlling autonomous UL Tx of UE 2 in Scell 3 according to an embedment of the present invention.
  • step SI 01 BS 1 judges whether UE 2 has valid TA in Scell 3.
  • Scell 3 there may be several scenarios as follows: i. BS 1 has not configured Scell 3 for UE 2;
  • BS 1 has configured Scell 3 for UE 2, but Scell 3 is not activated; iii. BS 1 has configured Scell 3 for UE 2, and Scell 3 is activated.
  • Scell 3 belongs to the existing TA group(s), which can be, for example, known from information such as network deployment scenario and position of the UE. If Scell 3 does not belong to any existing TA group, BS 1 judges that UE 2 does not have valid TA in Scell 3.
  • Scell 3 belongs to an existing TA group, namely that the TA of Scell 3 is the same as the TA of the existing TA group
  • BS 1 judges whether UE 2 has valid TA in Scell 3 by judging whether the TA of this existing TA group is valid. If the TA of this existing TA group is valid, UE 2 has valid TA in Scell 3, and vice versa.
  • BS 1 judges whether the TA of Scell 3 is valid. If it is valid, BS 1 judges that UE 2 has valid TA in Scell 3, and vice versa.
  • step SI 01 If BS 1 judges, in step SI 01 , that UE 2 does not have valid TA in Scell 3, BS 1 sends, in step SI 02, UE 2 a first message for controlling UE 2 not to perform autonomous UL Tx including, for example, periodical SRS in Scell 3.
  • the first message can be implemented in various ways. According to an embodiment of the present invention, the first message can be used to not configure or de-configure the autonomous UL Tx of UE 2 in Scell 3 so that UE 2 does not perform the autonomous UL Tx in Scell 3. According to another embodiment of the present invention, the first message can be used to de-activate Scell 3 so that UE 2 does not perform the autonomous UL Tx in Scell 3. According to yet another embodiment of the present invention, the first message can be used to directly instruct UE2 not to perform the autonomous UL Tx in Scell 3. These will be described in below.
  • step SI 03 UE 2 receives the first message from BS 1 and does not perform autonomous UL Tx in Scell 3 according to the received first message.
  • step SI 04 BS 1 obtains valid TA of UE 2 in Scell 3, which can be implemented in many ways.
  • BS 1 obtains the valid TA in Scell 3 by means of random access of UE 2 in Scell 3.
  • BS 1 sends a PDCCH (Physical Downlink Control Channel) order signaling to the UE; next, in step S202, UE 2 performs random access (e.g. sending random access preamble sequence) in Scell 3 ; next, in step S203, BS 1 determines the TA in Scell 3 according to the random access (e.g. the sent random access preamble sequence) of UE 2.
  • PDCCH Physical Downlink Control Channel
  • BS1 obtains valid TA of the TA group to which Scell 3 belongs by means of other ways, and in turn obtains the valid TA of Scell 3.
  • BS 1 obtains the valid TA of the TA group to which Scell 3 belongs by means of random access in other Scell of the TA group.
  • step S 105 BS 1 sends the obtained valid TA to UE 2.
  • step SI 06 UE 2 sets valid TA for Scell 3 according to the received TA.
  • UE 2 starts to perform autonomous UL Tx in Scell 3 if the autonomous UL Tx is configured in Scell 3.
  • UE 2 does not automatically start to perform autonomous UL Tx in Scell 3 but waits for further control of BS 1 even if the autonomous UL Tx is configured in Scell 3.
  • BS 1 sends UE 2 a second message for controlling UE 2 to perform autonomous UL Tx in the Scell.
  • step SI 08 UE 2 starts to perform autonomous UL Tx in Scell 3 according to the received second message.
  • the first message for controlling not to perform autonomous UL Tx and the second message for controlling to perform autonomous UL Tx can be implemented in different ways.
  • the first and second messages can be RRC (Radio Resource Control) message; according to another embodiment of the present invention, the first and second messages can be MAC CE.
  • Figure 3 shows a flowchart of the method for controlling autonomous UL Tx of UE 2 in Scell 3 according to an embedment of the present invention, wherein Scell 3 has not been configured yet, i.e. corresponding to the above scenario i.
  • BS 1 judges, in step S301 , whether UE 2 has valid TA in Scell 3 that is to be configured. If no, BS 1 sends, in step S2302, UE 2 a first RRC message as the first message, wherein the first RRC message is used for configuring Scell 3. Different from the existing RRC message for configuring Scell, the first RRC message does not include configuration for autonomous UL Tx in Scell 3.
  • step S303 UE 2 configures Scell 3 without configuring autonomous UL Tx in Scell 3 according to the received first RRC message.
  • Scell 3 is activated later, UE 2 will not perform autonomous UL Tx because no autonomous UL Tx has been configured.
  • steps S304 to S306 are similar to steps SI 04 to SI 06 in Figure 1 and are therefore not described here.
  • BS 1 sends UE 2 a third RRC message for configuring autonomous UL Tx in Scell 3 in step S307.
  • UE 2 configures the autonomous UL Tx in Scell 3 and accordingly performs the autonomous UL Tx according to the received third RRC message.
  • Figure 4 shows a flowchart of the method for controlling autonomous UL Tx of UE 2 in Scell 3 according to an embedment of the present invention, wherein Scell 3 has been configured, i.e. corresponding to the above scenario ii or iii.
  • the autonomous UL Tx in Scell 3 has also been configured, but Scell 3 can be activated or can be not activated, and furthermore, UE 2 performs the configured autonomous UL Tx in Scell 3 as far as Scell 3 is activated.
  • BS 1 judges, in step S401 , whether UE 2 has valid TA in Scell 3 that is already activated or is to be activated. If no, BS 1 sends, in step S402, UE 2 a second RRC message as the first message, wherein the second RRC message is used for de-configuring the autonomous UL Tx in Scell 3.
  • step S403 UE 2 de-configures the autonomous UL Tx in Scell 3 according to the received second RRC message.
  • UE 2 will not perform the autonomous UL Tx because the configuration for the autonomous UL Tx has been removed.
  • steps S404 to S408 are similar to steps S304 to S308 in Figure 3 and are therefore not described here.
  • Figure 5 shows a flowchart of the method for controlling autonomous UL Tx of UE 2 in Scell 3 according to an embedment of the present invention, wherein the Scell 3 has not been activated yet, i.e. corresponding to the above scenario i or ii.
  • BS 1 configures Scell 3 for UE 2 and configures autonomous UL Tx in Scell 3 in step S500.
  • BS 1 judges, in step S501, whether UE 2 has valid TA in Scell 3 that is to be activated. If no, BS 1 sends, in step 502, UE 2 a first MAC CE as the first message.
  • the first MAC CE is used to activate the Scell and includes first predetermined information for instructing the UE not to perform the autonomous UL Tx in the Scell.
  • step S503 UE 2 activates Scell 3 without performing the autonomous UL Tx according to the received first MAC CE.
  • steps S504 to S506 are similar to steps S104 to S I 06 in Figure 1 and are therefore not described here.
  • BS 1 sends, in step S507, UE 2 a third MAC CE which includes second predetermined information for instructing UE 2 to perform the autonomous UL Tx in Scell 3.
  • step S508 UE 2 performs the autonomous UL Tx in Scell 3 according to the received third MAC CE.
  • Figure 6 shows a flowchart of the method for controlling autonomous UL Tx of UE 2 in Scell 3 according to an embedment of the present invention, wherein Scell 3 is already activated, i.e. corresponding to the above scenario iii.
  • UE 2 performs autonomous UL Tx in Scell 3.
  • the autonomous UL Tx performed by UE 2 in Scell 3 causes significant interference to other UEs.
  • BS 1 judges, in step S601, whether UE 2 has valid TA in Scell 3 that is already activated. If no, BS 1 sends, in step S602, UE 2 a second MAC CE as the first message, wherein the second MAC CE is used for de-activating Scell 3.
  • step S603 UE 2 de-activates Scell 3 and thus does not perform the autonomous UL Tx in Scell 3 anymore according to the received second MAC CE.
  • steps S604 to S606 are similar to steps SI 04 to S I 06 in Figure 1 and are therefore not described here.
  • BS 1 sends, in step S607, UE 2 a fourth MAC CE which is used for activating the Scell and includes second predetermined information for instructing UE 2 to perform the autonomous UL Tx in Scell 3.
  • step S608 UE 2 activates Scell 3 again and performs the autonomous UL Tx in Scell 3 according to the received fourth MAC CE.
  • Figure 7 shows a schematic diagram of the first and second predetermined information in MAC CE according to an embedment of the present invention.
  • the first predetermined information included in the aforementioned first MAC CE as well as the second predetermined information included in the aforementioned third and fourth MAC CE can be implemented in various ways.
  • the existing MAC CE can be extended, namely that one byte b7-b0 is added to carry the first predetermined information and the second predetermined information for indicating whether to perform autonomous UL TX.
  • each bit of the newly added byte b7-b0 can correspond to one cell, and the value of each bit indicates whether to perform autonomous UL Tx in the Scell corresponding to the bit.

Landscapes

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

Abstract

La présente invention se rapporte à un procédé adapté pour contrôler une transmission autonome sur la liaison montante d'un équipement d'utilisateur dans une cellule secondaire. De façon plus spécifique, l'invention se rapporte à un procédé adapté pour contrôler, dans une station de base d'un réseau de communication sans fil basé sur une transmission à agrégation de porteuses, une transmission autonome sur la liaison montante d'un équipement d'utilisateur dans une cellule secondaire desservie par ladite station de base. Le procédé selon l'invention comprend les étapes suivantes consistant : à déterminer si ledit équipement d'utilisateur a, ou non, une valeur d'alignement en temporisation valide dans ladite cellule secondaire ; à envoyer, au dit équipement d'utilisateur, un premier message pour commander au dit équipement d'utilisateur de ne pas réaliser ladite transmission autonome sur la liaison montante dans ladite cellule secondaire, si ledit équipement d'utilisateur n'a pas une valeur d'alignement en temporisation valide dans ladite cellule secondaire. Grâce aux solutions techniques décrites dans la présente invention, une station de base commande à un équipement d'utilisateur de ne pas réaliser une transmission autonome sur la liaison montante dans une cellule secondaire une fois que la station de base a détecté que l'équipement d'utilisateur n'avait pas une valeur d'alignement en temporisation valide dans la cellule secondaire. De ce fait, des interférences significatives sur des communications sur la liaison montante d'un autre ou d'autres équipements d'utilisateurs, qui peuvent être occasionnées par la transmission autonome sur la liaison montante, peuvent être évitées.
PCT/IB2012/001658 2011-08-12 2012-08-13 Procédé de contrôle d'une transmission autonome sur la liaison montante d'un équipement d'utilisateur dans une cellule secondaire WO2013024346A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110233631.4A CN102932947B (zh) 2011-08-12 2011-08-12 用于控制用户设备在从小区上的自主的上行传输的方法
CN201110233631.4 2011-08-12

Publications (1)

Publication Number Publication Date
WO2013024346A1 true WO2013024346A1 (fr) 2013-02-21

Family

ID=47080736

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/001658 WO2013024346A1 (fr) 2011-08-12 2012-08-13 Procédé de contrôle d'une transmission autonome sur la liaison montante d'un équipement d'utilisateur dans une cellule secondaire

Country Status (3)

Country Link
CN (1) CN102932947B (fr)
TW (1) TW201322808A (fr)
WO (1) WO2013024346A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180175986A1 (en) * 2016-12-16 2018-06-21 Qualcomm Incorporated Autonomous uplink transmissions on a shared communication medium

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106160973B (zh) * 2015-04-07 2019-04-19 上海诺基亚贝尔股份有限公司 用于控制辅助小区的数据传输的方法及装置
CN106851822B (zh) * 2017-02-04 2020-05-22 北京佰才邦技术有限公司 传输方法和用户终端
KR20240052857A (ko) * 2019-01-11 2024-04-23 지티이 코포레이션 무선 통신의 타이밍 어드밴스 조정 스킴들

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101055730B1 (ko) * 2004-08-11 2011-08-11 엘지전자 주식회사 상향링크 전송 전력 스케줄링 방법

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ALCATEL-LUCENT ET AL: "Initiating timing alignment for SCell in multiple TA", 3GPP DRAFT; R2-113235 WHEN TO PRACH_V0.5, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Barcelona, Spain; 20110509, 2 May 2011 (2011-05-02), XP050495175 *
E-MAIL RAPPORTEUR (NTT DOCOMO ET AL: "CA support for multi-TA", 3GPP DRAFT; R2-101567, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. San Francisco, USA; 20100222, 18 February 2010 (2010-02-18), XP050421923 *
INTEL CORPORATION: "Configuration of multiple TA in Rel-11 CA", 3GPP DRAFT; R2-112138-MTA_CONFIGURATION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG2, no. Shanghai, China; 20110411, 5 April 2011 (2011-04-05), XP050494549 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180175986A1 (en) * 2016-12-16 2018-06-21 Qualcomm Incorporated Autonomous uplink transmissions on a shared communication medium
US10581572B2 (en) * 2016-12-16 2020-03-03 Qualcomm Incorporated Autonomous uplink transmissions on a shared communication medium
EP3657883A1 (fr) * 2016-12-16 2020-05-27 QUALCOMM Incorporated Transmissions de liaison montante autonomes sur un support de communication partagé

Also Published As

Publication number Publication date
TW201322808A (zh) 2013-06-01
CN102932947B (zh) 2016-03-30
CN102932947A (zh) 2013-02-13

Similar Documents

Publication Publication Date Title
US20220174747A1 (en) Method and apparatus for improving msg3 transmission of random access procedure in a wireless communication system
US10667224B2 (en) Method and device for obtaining secondary timing advance
US10433301B2 (en) Method and apparatus for handling timing advance for uplink transmission in a wireless communication system
US9219589B2 (en) Uplink transmission method and apparatus in carrier aggregation system
US9467960B2 (en) Apparatus and method for defining timing reference for secondary cells in a secondary timing advance group
CN102271418B (zh) 一种随机接入的方法及装置
US9054835B2 (en) Apparatus and method for establishing uplink synchronization in a wireless communication system
CN111543099A (zh) 具有辅助上行链路的上行链路载波配置和选择
US9107154B2 (en) Information notification and timing advance acquisition method, system, and device
US20160183277A1 (en) Radio station, radio terminal, and synchronization timer control method in radio communication system
CN114258714B (zh) 用于被调度实体调整无线网络中的定时的技术
WO2016064196A1 (fr) Procédé d'émission/réception de signal d2d dans un système de communication sans fil et appareil associé
IL250121A (en) Install wires, a network node, and methods to perform cell sponging
CN105474731B (zh) 用于随机接入的方法和设备
EP2493254B1 (fr) Procédé, station de base et système permettant d'effectuer un réglage de synchronisation sur des porteuses de composantes
EP2903358A1 (fr) Système de communication mobile, terminal utilisateur, station de base et processeur
JP2014513504A (ja) ランダムアクセス応答のためのクロススケジューリング
CN111630894A (zh) 小区组之间的传输的切换
WO2012150499A1 (fr) Procédé de déclenchement d'un alignement temporel
EP2880928B1 (fr) Procédé et appareil pour obtenir un alignement temporel de liaison montante sur changements de groupe d'avance de synchronisation de cellules
TW201743649A (zh) 處理雙連結的裝置及方法
WO2013024346A1 (fr) Procédé de contrôle d'une transmission autonome sur la liaison montante d'un équipement d'utilisateur dans une cellule secondaire
EP2943007B1 (fr) Synchronisation de liaison montante de cellule secondaire
US20230362853A1 (en) Method and apparatus for time alignment regarding multi-trp in a wireless communication system
CN116746231A (zh) Iab情况-6定时和调整

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: 12778782

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: 12778782

Country of ref document: EP

Kind code of ref document: A1