[go: up one dir, main page]

WO2017076278A1 - Procédé et dispositif de traitement flexible de liaison entre des éléments de réseau - Google Patents

Procédé et dispositif de traitement flexible de liaison entre des éléments de réseau Download PDF

Info

Publication number
WO2017076278A1
WO2017076278A1 PCT/CN2016/104247 CN2016104247W WO2017076278A1 WO 2017076278 A1 WO2017076278 A1 WO 2017076278A1 CN 2016104247 W CN2016104247 W CN 2016104247W WO 2017076278 A1 WO2017076278 A1 WO 2017076278A1
Authority
WO
WIPO (PCT)
Prior art keywords
link
network element
request
isolation
response
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.)
Ceased
Application number
PCT/CN2016/104247
Other languages
English (en)
Chinese (zh)
Inventor
孟宪杰
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.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
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 Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of WO2017076278A1 publication Critical patent/WO2017076278A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities

Definitions

  • the present invention relates to communications technologies, and in particular, to a link elastic processing method and apparatus between network elements.
  • the traditional network of the network operator is deployed through a large and growing number of dedicated hardware devices.
  • the network of the network operator is a very complex network composed of a large number of network elements.
  • the communication between the network elements is generally Hosted by the link.
  • the introduction of a new network service usually requires major adjustments to the hardware deployment and bearer of the entire network.
  • energy consumption is increasing, capital investment is challenging, and the necessary skills are lacking to design, integrate, and operate increasingly complex hardware devices. Therefore, the Carrier Alliance proposed Network Function Virtualization (NFV), hoping to unify network equipment to industrialized standards with high performance and large capacity through standard information technology (IT) virtualization technology.
  • IT information technology
  • the resources of each network element are variable.
  • the links between network elements are planned during network design, and then in the network. It is manually configured by the network management system during deployment. If you want to change the number of links, you must re-plan the network.
  • the link may be missing, or some links may be idle, resulting in waste of resources.
  • the invention provides a method and a device for processing link elasticity between network elements, which are used to solve the problem that the resources of the network element in the prior art may be lost, or some links may be idle, resulting in waste of resources. .
  • a first aspect of the embodiments of the present invention provides a link elastic processing method between network elements, including:
  • the first network element detects a link load parameter of the first network element
  • a second aspect of the embodiments of the present invention provides a method for processing link flexibility between network elements, including:
  • the second network element receives a link elastic change request sent by the first network element on the first link, and is used to negotiate with the second network element to elastically change between the first network element and the second network element.
  • the second network element responds to the link elastic change operation request to complete a link elastic change between the first network element and the second network element.
  • a third aspect of the embodiments of the present invention provides a method for processing link flexibility between network elements, including:
  • the management and scheduling domain MANO receives the link load parameter of the first network element sent by the first network element, and the link load parameter of the second network element sent by the second network element;
  • the MANO sends a link elastic change indication to the first network element when the link load parameter of the first network element or the link load parameter of the second network element meets a preset condition, so that the The first network element negotiates with the second network element to complete link elastic change.
  • a fourth aspect of the present invention provides a network element, where the network element is the first network element, and includes:
  • a detecting module configured to detect a link load parameter of the first network element
  • a sending module configured to send a link elastic change request to the second network element on the first link, where the link load parameter of the first network element meets the preset condition, for the second network element Negotiating elastically changing a link between the first network element and the second network element;
  • a receiving module configured to receive a link elastic change response sent by the second network element on the first link, and initiate a link elastic change operation to the second network element according to the link elastic change response Requesting to complete a link elastic change between the first network element and the second network element.
  • a fifth aspect of the present invention provides a network element, where the network element is a second network element, including:
  • a first receiving module configured to receive a link elastic change request sent by the first network element on the first link, to negotiate with the second network element to elastically change the first network element and the second network Link between elements;
  • a sending module configured to determine to agree to the link elastic change request according to the link elastic change request, and send a link elastic change response to the first network element on the first link;
  • a second receiving module configured to receive a link elastic change operation request initiated by the first network element
  • a response module configured to respond to the link elastic change operation request, to complete the first network element and the second network The link elasticity between the elements changes.
  • a sixth aspect of the present invention provides a link elastic processing device between network elements, which may be a MANO, including:
  • a receiving module configured to receive a link load parameter of the first network element that is sent by the first network element, and a link load parameter of the second network element that is sent by the second network element;
  • a sending module configured to send a link elastic change indication to the first network element when the link load parameter of the first network element or the link load parameter of the second network element meets a preset condition, The first network element is negotiated with the second network element to complete the link elastic change.
  • the first network element sends a chain to the second network element on the first link when the link load parameter of the first network element meets the preset condition. And the link between the first network element and the second network element is elastically changed by the second network element, and the second network element sends a link elastic change response if the link elastic change request is approved, If the negotiation is successful, the first network element and the second network element further complete the link elastic change operation, and implement the link elastic change between the first network element and the second network element, thereby implementing the link between the network elements. It can be flexibly changed according to actual needs, avoiding the problem of lack or waste of link resources due to resource changes of network elements.
  • FIG. 1 is a schematic diagram of a network architecture based on NFV
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for processing link flexibility between network elements according to the present invention
  • Embodiment 3 is a schematic flowchart of Embodiment 2 of a method for processing link flexibility between network elements according to the present invention
  • Embodiment 4 is a schematic flowchart of Embodiment 3 of a method for processing link flexibility between network elements according to the present invention
  • FIG. 5 is a schematic flowchart of Embodiment 4 of a method for processing link flexibility between network elements according to the present invention
  • FIG. 6 is a schematic flowchart of Embodiment 5 of a method for processing link flexibility between network elements according to the present invention
  • FIG. 7 is a schematic flowchart of Embodiment 6 of a method for processing link flexibility between network elements according to the present invention.
  • FIG. 8 is a schematic flowchart diagram of Embodiment 7 of a method for processing link flexibility between network elements according to the present invention.
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a network element according to the present invention.
  • FIG. 10 is a schematic structural diagram of Embodiment 2 of a network element according to the present invention.
  • FIG. 11 is a schematic structural diagram of Embodiment 3 of a network element according to the present invention.
  • FIG. 12 is a schematic structural diagram of Embodiment 1 of a link elastic processing device between network elements according to the present invention.
  • FIG. 13 is a schematic structural diagram of Embodiment 4 of a network element according to the present invention.
  • FIG. 14 is a schematic structural diagram of Embodiment 5 of a network element according to the present invention.
  • FIG. 15 is a schematic structural diagram of Embodiment 2 of a link elastic processing device between network elements according to the present invention.
  • Figure 1 is a schematic diagram of a network architecture based on NFV. As shown in FIG. 1 , the network architecture mainly includes two major parts, specifically,
  • the left side includes: a hardware resource layer, a virtualization layer, a virtual resource layer, a network element layer, and an Operational Support System (OSS)/Business Support System (BSS).
  • the hardware resources layer may include: computing hardware, storage hardware, network hardware, and the like; the virtual resource layer may include: virtual computing resources, virtual storage resources, virtual network resources, etc.; hardware resource layer, virtualization layer, and virtual The resource layer together form the Network Function Virtualization Infrastructure (NFVI).
  • the network element layer may include: various virtual network functions (VNFs), and each VNF may have its own element management system (Element Management System).
  • VNFs virtual network functions
  • Element Management System element Management System
  • the network element may be a call session control function entity in an IP Multimedia Subsystem (IMS) network (Call).
  • IMS IP Multimedia Subsystem
  • CSCF Session Control Function
  • TAS Telephony Application Server
  • MGCF Media Gateway Control Function
  • VIM Virtual Infrastructure Manager
  • VNF Manager VNF Manager
  • Orchestrator a Management and Orchestration
  • Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for processing link flexibility between network elements according to the present invention. As shown in FIG. 2, the method includes:
  • the first network element detects a link load parameter of the first network element.
  • the first network element and the second network element may be any network element in the network.
  • the first network element is used as the requesting party for writing.
  • the operations of the first network element and the second network element are performed. It can be interchanged. As long as a network element has a link elastic change requirement, it can initiate a link elastic change request.
  • the link load parameter may include any one of the following or a combination thereof: link occupancy rate, central processing unit (CPU) occupancy rate of the link processing, memory usage of the link processing, and whether it is received. Business appeals such as changes in link flexibility.
  • the first network element sends a link elastic change request to the second network element to negotiate with the second network element, when the link load parameter of the first network element meets the preset condition.
  • the link between the first network element and the second network element is elastically changed.
  • the first network element or the MANO triggers the first network element to negotiate with the second network element to increase or decrease the number of links according to the actual link condition reflected by the link load parameter.
  • the first network element and the second network element elastically change the link between the first network element and the second network element by using a link elastic change request negotiation.
  • the second network element determines to agree to the link elastic change request according to the link elastic change request, and sends a link elastic change response to the first network element on the first link.
  • the second network element After receiving the link elastic change request, the second network element first determines whether the link elastic change request is legal, for example, determining whether the requested message format is legal, whether the related information carried in the request is legal, and the like, if not, The first network element replies with a response, and carries a response failure identifier (NOK) in the response; if it is legal, the second network element determines to agree to the link elastic change request, and sends a link to the first network element on the first link.
  • NOK response failure identifier
  • the elastic change response indicates that the first network element and the second network element negotiate successfully, and S204 is performed to perform an actual link elastic change operation, that is, the link is increased or decreased, and the elastically changed links are all service links.
  • the first network element receives a link elastic change response sent by the second network element on the first link, and initiates a link elastic change operation request to the second network element according to the link elastic change response, to complete the The link elasticity between a network element and the second network element changes.
  • the first network element receives the link elastic change response sent by the second network element on the first link, indicating that the negotiation succeeds, and then actually increases or decreases the link operation, that is, initiates the link elastic change.
  • the operation request the second network element responds to the link elastic change operation request, and performs a link elastic change operation together with the first network element.
  • the first network element when the link load parameter of the first network element meets the preset condition, the first network element sends a link elastic change request to the second network element on the first link, and the second network element
  • the negotiation elastically changes the link between the first network element and the second network element. If the second network element agrees to the link elastic change request, the second network element sends a link elastic change response, indicating that the negotiation succeeds, and the first network element and the first network element
  • the second network element further completes the link elastic change operation, and implements the link elastic change between the first network element and the second network element, so that the link between the network elements can be flexibly changed according to actual needs, and the network element is avoided.
  • the problem of resource loss leads to the lack or waste of link resources.
  • the foregoing first link may be a dedicated link management channel, and the link management channel is dedicated to the first network element and the second network element to perform link elastic change negotiation.
  • the link management channel can be deployed at the time of network design.
  • an administrator manually adds it, or the Orchestrator in Figure 1 directly adds a network when establishing a network element in the process of constructing a network service (Network Service).
  • a link management channel may be established between the first network element and the MANO, and a link management channel is established between the second network element and the MANO, and the MANO is used as the first network element and the second network element.
  • the transfer station between the first network element and the second network element is sent to MANO first, and MANO forwards it to both parties.
  • the first link may also be an existing service bearer link.
  • the link load parameter of the first network element in the first network element meets a preset. If the condition is met, the first network element determines whether the link load parameter of the first network element meets the preset condition, and if yes, the first network element determines whether the link load parameter of the first network element meets the preset condition. A link elastic change request is sent to the second network element on the first link.
  • the first network element when the link load parameter of the first network element meets the preset condition, the first network element sends a link elastic change request to the second network element on the first link, which may be: A network element sends the link load parameter of the first network element to the MANO, and the MANO sends a link elastic change indication to the first network element when the link load parameter of the first network element meets the preset condition, and the first network element
  • the link elastic change request is sent to the second network element according to the link elastic change indication, that is, the first network element negotiates with the second network element to perform link elastic change according to the link elastic change indication.
  • FIG. 3 is a schematic flowchart of Embodiment 2 of a method for processing link flexibility between network elements according to the present invention
  • FIG. 3 is a specific process for adding a link between a first network element and a second network element, and is the first in this embodiment.
  • the network element determines whether the link load parameter meets the preset condition.
  • the method includes:
  • the first network element detects a link load parameter of the first network element.
  • the first network element determines whether the link load parameter of the first network element meets the first preset condition, and if yes, sends a link establishment request to the second network element on the first link, where The network element negotiates to establish at least one link between the first network element and the second network element.
  • the link load parameter meets the first preset condition, and may be any one or combination of the following: a, the link occupancy rate is greater than the first preset threshold; b, the CPU usage of the link processing is greater than the second preset threshold. ; c, the memory usage of the link processing is greater than a third preset threshold; d, receiving a service request to increase the link.
  • the foregoing link establishment request includes: the number of links to be built, the parameters of each link to be built, and the transaction identifier used to identify the current link establishment request.
  • the parameters of the link to be built include: an Internet Protocol (IP) IP address and port number of the first network element, an IP address and a port number of the second network element, and a protocol type of the link to be built. Since a network element may issue multiple link setup requests simultaneously or continuously, each link setup request carries a transaction identifier for identifying the current link setup request, so that the receiver establishes a request response response for a certain link. At the same time, the same identifier is carried in the response, and then the requested network element can receive a response to which request is made when the response is received. If the number of links to be built is not included in the link setup request, the default number is 1, but not limited to this.
  • the protocol type of the general link may be, but is not limited to, the Transmission Control Protocol (TCP) or the Stream Control Transmission Protocol (SCTP).
  • TCP Transmission Control Protocol
  • SCTP Stream Control Transmission Protocol
  • the link establishment request may further include other link-related information such as bandwidth and keep-alive time.
  • the second network element receives a link establishment request sent by the first network element on the first link, and determines to agree to the link establishment request according to the link establishment request, and is first to the first link.
  • the network element sends a link setup response.
  • the second network element determines whether the format of the link establishment request is legal, and whether the IP address and the port number carried therein are legal. If the link establishment request is legally determined, the second network is established for the link establishment. The device also needs to apply for a resource to the NFVI, that is, to apply for a virtual machine, an IP address, a port number, and the like. After the application is successful, a link establishment response is sent to the first network element on the first link.
  • the link setup response includes: the number of links to be built, the parameters of each link to be built, and the transaction identifier used to identify the current link request.
  • the second network element unified link establishment request further carries an agreement identifier (OK) in the link establishment response. If you do not agree, you can only carry the transaction identifier and rejection identifier (NOK) used to identify the current link request in the response. Other embodiments can be performed as such.
  • the first network element receives a link setup response sent by the second network element on the first link, and initiates a link setup operation request to the second network element according to the link setup response.
  • the second network element responds to the link establishment operation request to complete establishing at least one link between the first network element and the second network element. Specifically, the first network element and the second network element perform link establishment according to previously negotiated parameters.
  • FIG. 4 is a schematic flowchart of Embodiment 3 of a method for processing link flexibility between network elements according to the present invention
  • FIG. 4 is a specific process for reducing a link between a first network element and a second network element, which is the first in this embodiment.
  • the network element itself determines whether the link load parameter meets the preset condition as an example. As shown in FIG. 4, the method includes:
  • the first network element detects a link load parameter of the first network element.
  • the first network element determines whether the link load parameter of the first network element meets a second preset condition, and if yes, sends a link deletion request to the second network element on the first link, where The network element negotiates to delete at least one link between the first network element and the second network element.
  • the link load parameter meets the second preset condition, and may be any one or combination of the following: a, the link occupancy rate is less than the fourth preset threshold; b, the CPU usage of the link processing is less than the fifth preset. Threshold; c, the memory usage of the link processing is greater than a sixth preset threshold; d, receiving a service request to reduce the link.
  • the link deletion request includes: the number of links to be deleted, the parameters of each link to be deleted, and the transaction identifier used to identify the current link deletion request.
  • the parameters of the link to be deleted may include: an IP address and a port number of the first network element, an IP address and a port number of the second network element, and a protocol type of the link to be deleted. If the number of links to be deleted is not included in the link deletion request, the default is one, but not limited to this.
  • each link deletion request carries a request for identifying the current link deletion request, so that the receiver responds to a link deletion request, The response carries the same identity, so the previously issued network element can know which request to reply to when responding.
  • the second network element receives a link deletion request sent by the first network element on the first link, and determines to agree to the link deletion request according to the link deletion request, and is first to the first link.
  • the NE sends a link delete response. That is, the negotiation is completed.
  • the link deletion response includes: the number of links to be deleted, the parameters of each link to be deleted, and the transaction identifier used to identify the current link deletion request.
  • the first network element receives a link deletion response sent by the second network element on the first link, and initiates a link deletion operation request to the second network element according to the link establishment response.
  • the second network element responds to the link deletion operation request to complete deleting at least one link between the first network element and the second network element. Specifically, the first network element and the second network element delete the link according to the pre-negotiated content. These contents are parameters previously carried in the link deletion request and the link deletion response.
  • FIG. 5 is a schematic flowchart of Embodiment 4 of a method for processing link flexibility between network elements according to the present invention.
  • the method includes:
  • the first network element detects a link load parameter of the first network element.
  • the first network element determines whether the link load parameter of the first network element meets a second preset condition, and if yes, sends a link isolation request to the second network element on the first link, where The network element negotiates to isolate at least one link between the first network element and the second network element. The isolated link no longer carries services.
  • the link isolation request includes the number of links to be isolated, the parameters of each link to be isolated, and the transaction identifier used to identify the isolation request.
  • the parameters of the link to be isolated include: an IP address and a port number of the first network element, an IP address and a port number of the second network element, and a protocol type of the link to be isolated.
  • the second network element receives the link isolation request sent by the first network element on the first link, and determines to agree to the link isolation request according to the link isolation request, and is first to the first link.
  • the NE sends a link isolation response. The negotiation was successful.
  • the link isolation response includes the number of links to be isolated, the parameters of each link to be isolated, and the transaction identifier used to identify this isolation request.
  • the first network element receives a link isolation response sent by the second network element on the first link, and initiates a link operation operation request to the second network element according to the link isolation response.
  • the second network element responds to the link isolation operation request to complete isolation of at least one link between the first network element and the second network element.
  • the first network element and the second network element delete the link according to the pre-negotiated content.
  • S506 The first network element sends a link deletion request to the second network element on the first link, where the second network element negotiates with the second network element to delete at least one link between the first network element and the second network element.
  • the second network element receives a link deletion request sent by the first network element on the first link, and determines to agree to the link deletion request according to the link deletion request, and is first to the first link.
  • the NE sends a link delete response. That is, the negotiation is completed.
  • the first network element receives a link deletion response sent by the second network element on the first link, and initiates a link deletion operation request to the second network element according to the link deletion response.
  • the second network element responds to the link deletion operation request to complete deleting at least one link between the first network element and the second network element.
  • FIG. 6 is a schematic flowchart of Embodiment 5 of a method for processing link flexibility between network elements according to the present invention.
  • the isolated link if the isolated link is not deleted, it may be activated if necessary, after activation.
  • the link can continue to carry traffic.
  • the method includes:
  • the first network element sends a link activation request to the second network element on the first link, where the second network element negotiates with the second network element to activate at least one isolation status chain between the first network element and the second network element. road.
  • the second network element receives a link activation request sent by the first network element on the first link, and determines to agree to the link activation request according to the link activation request, and is first to the first link.
  • the NE sends a link activation response. That is, the negotiation is completed.
  • the link activation request includes: the number of links to be activated, the parameters of each link to be activated, and the transaction identifier used to identify the current link activation request.
  • the parameters of the link to be activated include: an IP address and a port number of the first network element, an IP address and a port number of the second network element, and a protocol type of the link to be activated.
  • the link activation response includes: the number of links to be activated, the parameters of each link to be activated, and the transaction identifier used to identify the current link activation request.
  • the first network element receives a link activation response sent by the second network element on the first link, and initiates a link activation operation request to the second network element according to the link activation response.
  • the second network element responds to the link activation operation request to complete activation of at least one isolation status link between the first network element and the second network element.
  • the first network element and the second network element complete link activation according to the negotiated parameters.
  • FIG. 7 is a schematic flowchart of Embodiment 6 of a method for processing link flexibility between network elements according to the present invention.
  • a dynamic change of a link between a first network element and a second network element is triggered by a MANO.
  • the MANO can trigger the establishment of a new link, a deleted link, an isolated link, or an activated link according to a specific situation.
  • the method includes:
  • the first network element detects a link load parameter of the first network element
  • the second network element detects a link load parameter of the second network element.
  • the first network element and the second network element each detect their own link load parameters.
  • the first network element sends the link load parameter of the first network element to the MANO, and the second network element sends the link load parameter of the second network element to the MANO.
  • the link load parameter of the first network element of the MANO meets a preset condition, or the link load of the second network element
  • the link elastic change indication is sent to the first network element, so that the first network element negotiates with the second network element to complete the link elastic change. That is, the MANO can change the elastic change indication to the first network element link, and the first network element further sends a link elastic change request to the second network element according to the link elastic change indication, and starts negotiating the link elastic change.
  • S703-S704 is a link establishment process.
  • the MANO determines whether the link load parameter of the first network element or the link load parameter of the second network element meets the first preset condition.
  • the MANO sends a link establishment indication to the first network element. .
  • the first preset condition can be referred to the foregoing text, and details are not described herein again.
  • the link establishment indication includes: the number of links to be built, the parameters of each link to be built, and the transaction identifier used to identify the current link establishment indication.
  • the parameters of the link to be built include: an IP address of the first network element, an IP address of the second network element, and a protocol type of the link to be built.
  • the port number is not carried here, and the port number is assigned at the network element. If the number of links to be built is not carried, you can configure the default number to be 1.
  • the first network element receives the link establishment indication sent by the MANO, and sends a link establishment request to the second network element on the first link, where the second network element negotiates with the second network element in the first network element and the second network element. At least one link is established between the NEs.
  • the second network element receives a link establishment request sent by the first network element on the first link, and determines to agree to the link establishment request according to the link establishment request, and is first to the first link.
  • the network element sends a link setup response.
  • the MANO is used as a transit station between the first network element and the second network element. Then, the first network element sends a link establishment request to the MANO on the link management channel, and the MANO forwards the link establishment request to the second network element.
  • the second network element sends the link setup response to the MANO on the link management channel, and the MANO forwards the link setup response to the first network element.
  • Other embodiments can be carried out as such, and will not be described again.
  • the first network element receives a link setup response sent by the second network element on the first link, and initiates a link setup operation request to the second network element according to the link setup response.
  • the second network element responds to the foregoing link establishment operation request to complete establishing at least one link between the first network element and the second network element. Specifically, the first network element and the second network element perform link establishment according to previously negotiated parameters.
  • the first network element may send a link establishment completion response to the MANO.
  • the MANO determines whether the link load parameter of the first network element or the link load parameter of the second network element meets the second preset condition.
  • the MANO sends a link isolation indication to the first network element.
  • the link isolation indication includes: the number of links to be isolated, the parameters of each link to be isolated, and the identifier used to identify this time.
  • the parameters of the link to be isolated include: an IP address of the first network element, an IP address of the second network element, and a protocol type of the link to be isolated.
  • the first network element receives the link isolation indication sent by the MANO, and sends a link isolation request to the second network element on the first link, where the second network element negotiates to isolate the first network element and the second network element. At least one link between network elements.
  • the second network element receives the link isolation request sent by the first network element on the first link, and determines to agree to the link isolation request according to the link isolation request, and is first to the first link.
  • the NE sends a link isolation response. The negotiation was successful.
  • the first network element receives a link isolation response sent by the second network element on the first link, and initiates a link operation operation request to the second network element according to the link isolation response.
  • the second network element responds to the link isolation operation request to complete isolation of at least one link between the first network element and the second network element.
  • the first network element After the isolation is completed, the first network element sends a link isolation complete response to MANO.
  • the isolation process of the S709 ⁇ S714 is mainly to avoid a part of the ongoing service interruption caused by directly deleting the link, and may not execute S709 ⁇ S714.
  • the MANO may perform the second preset condition when the link load parameter of the first network element meets the second preset condition, or When the link load parameter of the second network element meets the second preset condition, the link deletion indication is directly sent to the first network element.
  • the MANO sends a link deletion indication to the first network element.
  • the link deletion indication includes: the number of links to be deleted, the parameters of each link to be deleted, and the transaction identifier used to identify the link deletion indication.
  • the parameters of the link to be deleted include: an IP address of the first network element, an IP address of the second network element, and a protocol type of the link to be deleted.
  • the first network element receives the link deletion indication sent by the MANO, and sends a link deletion request to the second network element on the first link, where the first network element is used to negotiate with the second network element to delete the first network element and the second network element. At least one link between network elements.
  • the second network element receives a link deletion request sent by the first network element on the first link, and determines to agree to the link deletion request according to the link deletion request, and is first to the first link.
  • the NE sends a link delete response.
  • the first network element receives a link deletion response sent by the second network element on the first link, and initiates a link deletion operation request to the second network element according to the link deletion response.
  • the second network element responds to the link deletion operation request to complete deleting at least one link between the first network element and the second network element.
  • the first network element After the deletion is completed, the first network element sends a link deletion completion response to MANO.
  • FIG. 8 is a schematic flowchart of Embodiment 7 of a method for processing link flexibility between network elements according to the present invention.
  • the isolated link if the isolated link is not deleted, it may be activated if necessary, after activation.
  • the link can continue to carry the service.
  • the link can be activated by MANO according to the specific situation.
  • the method includes:
  • the MANO sends a link activation indication to the first network element.
  • the link activation indication includes: the number of links to be activated, the parameters of each link to be activated, and the identifier used to identify the link The transaction ID indicated by the secondary link activation.
  • the parameters of the link to be activated include: an IP address of the first network element, an IP address of the second network element, and a protocol type of the link to be activated.
  • the first network element receives the link activation indication sent by the MANO, and sends a link activation request to the second network element on the first link, where the second network element is used to negotiate to activate the first network element and the second network element. At least one isolated state link between network elements.
  • the second network element receives a link activation request sent by the first network element on the first link, and determines to agree to the link activation request according to the link activation request, and is first to the first link.
  • the NE sends a link activation response.
  • the first network element receives a link activation response sent by the second network element on the first link, and initiates a link activation operation request to the second network element according to the link activation response.
  • the second network element responds to the link activation operation request to complete activation of at least one isolation status link between the first network element and the second network element.
  • the first network element After the activation is completed, the first network element sends a link activation completion response to MANO.
  • FIG. 9 is a schematic structural diagram of Embodiment 1 of a network element according to the present invention.
  • the network element is the first network element.
  • the network element includes: a detection module 901, a sending module 902, and a receiving module 903. :
  • the detecting module 901 is configured to detect a link load parameter of the first network element.
  • the sending module 902 is configured to send a link elastic change request to the second network element on the first link when the link load parameter of the first network element meets the preset condition, where the link elastic change request is used for Negotiating with the second network element to elastically change a link between the first network element and the second network element.
  • the receiving module 903 is configured to receive a link elastic change response sent by the second network element on the first link, and initiate a link elastic change to the second network element according to the link elastic change response.
  • the operation request is performed to complete a link elastic change between the first network element and the second network element.
  • the network element is used to perform the foregoing method corresponding to the first network element, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the first link is a link management channel or a service bearer link.
  • the sending module 902 is specifically configured to: when the link load parameter of the first network element meets the first preset condition, send a link establishment request to the second network element on the first link, where And establishing, by the second network element, at least one link between the first network element and the second network element.
  • the link elasticity change response is a link establishment response.
  • the sending module 902 is specifically configured to: when the link load parameter of the first network element meets the second preset condition, send a link deletion request to the second network element on the first link, where And deleting, by the second network element, at least one link between the first network element and the second network element.
  • the link elasticity change response is a link deletion response.
  • the sending module 902 is further configured to: before the link deletion request is sent to the second network element on the first link, the link load parameter of the first network element meets the second Preset conditions on the first link Sending a link isolation request to the second network element, where the at least one link between the first network element and the second network element is isolated and negotiated with the second network element, where the isolated The link does not carry services.
  • the receiving module 903 is further configured to receive a link isolation response sent by the second network element on the first link, and initiate a link isolation operation request to the second network element according to the link isolation response, to And completing isolation of at least one link between the first network element and the second network element.
  • the sending module 902 is further configured to send, on the first link, a link activation request to the second network element, where the first network element is activated and negotiated with the second network element. At least one isolated state link between the second network elements.
  • the receiving module 903 is further configured to receive a link activation response sent by the second network element on the first link, and initiate a link activation operation request to the second network element according to the link activation response, to Completing activation of at least one isolated state link between the first network element and the second network element.
  • the sending module 902 may send the link load parameter of the first network element to the management and scheduling domain MANO, and receive the MANO when the link load parameter of the first network element meets a preset condition.
  • the link elasticity change indication is sent according to the link elasticity change indication to the second network element on the first link.
  • FIG. 10 is a schematic structural diagram of a second embodiment of a network element according to the present invention.
  • the network element is the second network element.
  • the network element includes: a first receiving module 110, a sending module 111, and a second receiving. Module 112 and response module 113. among them,
  • the first receiving module 110 is configured to receive a link elastic change request sent by the first network element on the first link, and is configured to negotiate with the second network element to elastically change the first network element and the second The link between network elements.
  • the sending module 111 is configured to determine to agree to the link elastic change request according to the link elastic change request, and send a link elastic change response to the first network element on the first link.
  • the second receiving module 112 is configured to receive a link elastic change operation request initiated by the first network element.
  • the response module 113 is configured to respond to the link elastic change operation request to complete a link elastic change between the first network element and the second network element.
  • the network element is used to perform the foregoing method for the second network element, and the implementation principle and the technical effect are similar, and details are not described herein again.
  • the first link is a link management channel or a service bearer link.
  • the first receiving module 110 is configured to receive, by the first network element, a link establishment request sent by the first network element, where the second network element negotiates with the second network element in the first network element. Establishing at least one link with the second network element.
  • the sending module 111 is specifically configured to determine to agree to the link establishment request according to the link establishment request, and send a link establishment response to the first network element on the first link.
  • the first receiving module 110 is configured to receive a link deletion request that is sent by the first network element on the first link, and is used to negotiate with the second network element to delete the first network element and the At least one link between the second network elements.
  • the sending module 111 is configured to determine to agree to the link deletion request according to the link deletion request, and send a link deletion response to the first network element on the first link.
  • the first receiving module 110 is further configured to receive the first network element on the first link before receiving the link deletion request sent by the first network element on the first link. And a link isolation request sent by the second network element to isolate the at least one link between the first network element and the second network element, where the isolated link does not carry the service
  • the sending module 111 is further configured to determine to agree to the link isolation request according to the link isolation request, and send a link isolation response to the first network element on the first link.
  • the second receiving module 112 is further configured to receive a link isolation operation request initiated by the first network element according to the link isolation response.
  • the response module 113 is configured to respond to the link isolation operation request to complete isolation of at least one link between the first network element and the second network element.
  • the first receiving module 110 is further configured to receive a link activation request that is sent by the first network element on the first link, and is used to negotiate to activate the first network element and the second network element. At least one isolated state link between the second network elements.
  • the sending module 111 is further configured to determine to agree to the link activation request according to the link activation request, and send a link activation response to the first network element on the first link.
  • the second receiving module 112 is further configured to receive, by the first network element, a link activation operation request according to the link activation response.
  • the response module 113 is further configured to respond to the link activation operation request to complete activation of at least one isolation status link between the first network element and the second network element.
  • FIG. 11 is a schematic structural diagram of Embodiment 3 of a network element according to the present invention. As shown in FIG. 11, the network element may further include: a detection module 114. specifically,
  • the detecting module 114 is configured to detect a link load parameter of the second network element.
  • the sending module 111 is further configured to send the link load parameter of the second network element to the management and scheduling domain MANO.
  • FIG. 12 is a schematic structural diagram of Embodiment 1 of an inter-network element link elastic processing apparatus according to the present invention.
  • the apparatus may be the above-mentioned MANO.
  • the apparatus includes: a receiving module 121 and a sending module 122, where:
  • the receiving module 121 is configured to receive a link load parameter of the first network element that is sent by the first network element, and a link load parameter of the second network element that is sent by the second network element.
  • the sending module 122 is configured to send a link elastic change indication to the first network element when the link load parameter of the first network element or the link load parameter of the second network element meets a preset condition, The first network element is negotiated with the second network element to complete the link elastic change.
  • the device is used to perform the foregoing method embodiments, and the implementation principle and technical effects are similar, and details are not described herein again.
  • the sending module 122 is configured to: when the link load parameter of the first network element or the link load parameter of the second network element meets the first preset condition, to the first network element And transmitting a link establishment indication, so that the first network element negotiates with the second network element to establish a new link between the first network element and the second network element.
  • the sending module 122 is configured to: when the link load parameter of the first network element or the link load parameter of the second network element meets a second preset condition, to the first network element Sending a link deletion indication, so that the first network element and the second network element negotiate to delete at least one link between the first network element and the second network element.
  • the sending module 122 is further configured to: before the sending the link deletion indication to the first network element, the link load parameter of the first network element or the link load parameter of the second network element When the second preset condition is met, the first network is The element sends a link isolation indication, so that the first network element and the second network element negotiate to delete at least one link between the first network element and the second network element, where The link does not carry traffic.
  • the sending module 122 is further configured to send a link activation indication to the first network element, so that the first network element and the second network element negotiate to activate the first network element and the At least one isolated state link between the second network elements.
  • FIG. 13 is a schematic structural diagram of Embodiment 4 of a network element according to the present disclosure.
  • the network element is the foregoing first network element.
  • the network element includes: a processor 131, an interface circuit 132, a memory 133, and a bus 134.
  • the processor 131, the interface circuit 132, and the memory 133 are connected and communicate with each other through a bus 134.
  • the memory 133 stores a set of program codes, and the processor 131 calls the program code stored in the memory 133 to perform the following operations:
  • the interface circuit 132 sends a link elastic change request to the second network element on the first link, and is used to negotiate with the second network element. Flexibly changing a link between the first network element and the second network element;
  • the first link is a link management channel or a service bearer link.
  • the processor 131 is configured to: when the link load parameter of the first network element meets the first preset condition, send the chain to the second network element by using the interface circuit 132 on the first link. And a path establishment request, configured to establish, by the second network element, at least one link between the first network element and the second network element.
  • the link elasticity change response is a link establishment response.
  • the processor 131 is configured to send a chain to the second network element on the first link by using the interface circuit 132 when the link load parameter of the first network element meets the second preset condition.
  • the path deletion request is used to negotiate with the second network element to delete at least one link between the first network element and the second network element.
  • the link elasticity change response is a link deletion response.
  • the processor 131 before the link deletion request is sent to the second network element by using the interface circuit 132, the link load parameter of the first network element meets a second preset condition.
  • the processor 131 sends a link activation request to the second network element on the first link by using the interface circuit 132, and is configured to negotiate with the second network element to activate the first network element. At least one isolation from the second network element Receiving, by the interface circuit 132, a link activation response sent by the second network element on the first link, and initiating a link activation operation request to the second network element according to the link activation response, And completing at least one isolation state link between the first network element and the second network element.
  • the processor 131 is configured to send the link load parameter of the first network element to the MANO through the interface circuit 132, and receive the link load of the MANO in the first network element by using the interface circuit 132.
  • FIG. 14 is a schematic structural diagram of Embodiment 5 of a network element according to the present disclosure.
  • the network element is the foregoing second network element.
  • the network element includes: a processor 141, an interface circuit 142, a memory 143, and a bus 144.
  • the processor 141, the interface circuit 142, and the memory 143 are connected and complete communication with each other through a bus 144.
  • the memory 143 stores a set of program codes, and the processor 141 calls the program code stored in the memory 143 to perform the following operations:
  • the link elastic change operation request initiated by the first network element is received by the interface circuit 142.
  • the first link is a link management channel or a service bearer link.
  • the processor 141 is configured to receive, by using the interface circuit 142, a link establishment request sent by the first network element on the first link, where the first network element negotiates with the second network element at the first Establishing at least one link between the network element and the second network element; determining, according to the link establishment request, that the link establishment request is agreed, and performing, by using the interface circuit 142, the first link A network element sends a link setup response.
  • the processor 141 is configured to receive, by using the interface circuit 142, a link deletion request that is sent by the first network element on the first link, and is used to negotiate with the second network element to delete the first network element. And at least one link between the second network element; determining, according to the link deletion request, the link deletion request, and using the interface circuit 142 to the first network on the first link The meta-transmission link deletes the response.
  • the processor 141 receives, by using the interface circuit 142, a link isolation request sent by the first network element on the first link, before the link deletion request sent on the first link, for the second
  • the network element negotiates to isolate at least one link between the first network element and the second network element, where the isolated link does not carry the service; and the link isolation request is determined according to the link isolation request.
  • the processor 141 may further receive, by using the interface circuit 142, a link activation request that is sent by the first network element on the first link, and is configured to negotiate with the second network element to activate the first network element and the Determining at least one isolated state link between the second network elements; determining to agree to the link activation request according to the link activation request, and using the interface circuit 142 to the first network on the first link Transmitting a link activation response; receiving, by the interface circuit 142, the first network element to initiate a link activation operation request according to the link activation response; responding to the link activation operation request to complete activation of the first network element And at least one isolated state link between the second network element.
  • the processor 141 may further detect a link load parameter of the second network element, and send, by using the interface circuit 142, a link load parameter of the second network element to the MANO.
  • FIG. 15 is a schematic structural diagram of Embodiment 2 of an inter-network element link elastic processing apparatus according to the present invention.
  • the apparatus may be the above-mentioned MANO.
  • the apparatus includes: a processor 151, an interface circuit 152, a memory 153, and The bus 154, wherein the processor 151, the interface circuit 152 and the memory 153 are connected and complete communication with each other via the bus 154, wherein the memory 153 stores a set of program codes, and the processor 151 calls the program code stored in the memory 153 to execute the following operating:
  • the interface circuit 152 sends a link elastic change indication to the first network element, so that The first network element negotiates with the second network element to complete link elastic change.
  • the processor 151 is specifically configured to send, when the link load parameter of the first network element or the link load parameter of the second network element meets the first preset condition, to the first network element. And establishing a link to enable the first network element to negotiate with the second network element to establish a new link between the first network element and the second network element.
  • the processor 151 is specifically configured to send, when the link load parameter of the first network element or the link load parameter of the second network element meets a second preset condition, to the first network element. And a link deletion indication, so that the first network element and the second network element negotiate to delete at least one link between the first network element and the second network element.
  • the processor 151 is further configured to send, when the link load parameter of the first network element or the link load parameter of the second network element meets a second preset condition, to the first network element.
  • Link isolation indication so that the first network element and the second network element negotiate to delete at least one link between the first network element and the second network element, where the isolated chain The road does not carry the business.
  • the processor 151 is further configured to send a link activation indication to the first network element, so that the first network element and the second network element negotiate to activate the first network element and the At least one isolated state link between the second network elements.
  • the disclosed apparatus and method may be implemented by other The way to achieve.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
  • the above software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform the embodiments of the present invention. Part of the steps of the method.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (English: Read-Only Memory, abbreviated as: ROM), a random access memory (English: Random Access Memory, abbreviated as: RAM), a magnetic disk or an optical disk, and the like.
  • ROM Read-Only Memory
  • RAM Random Access Memory

Landscapes

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

Abstract

La présente invention concerne un procédé et un dispositif permettant de traiter de manière flexible une liaison entre des éléments de réseau. Le procédé comprend les étapes suivantes : un premier élément de réseau détecte un paramètre de charge de liaison du premier élément de réseau; lorsque le paramètre de charge de liaison du premier élément de réseau satisfait une condition prédéfinie, le premier élément de réseau envoie à un second élément de réseau, sur une première liaison, une demande de variation de liaison flexible permettant de négocier avec le second élément de réseau de sorte à faire varier de manière flexible la liaison entre le premier élément de réseau et le second élément de réseau; le premier élément de réseau reçoit une réponse de variation de liaison flexible envoyée par le second élément de réseau sur la première liaison, et déclenche une demande de fonction de variation de liaison flexible vers le second élément de réseau sur la base de la réponse de variation de liaison flexible, afin de compléter la variation de liaison flexible entre le premier élément de réseau et le second élément de réseau. Au moyen de la variation de liaison flexible entre le premier élément de réseau et le second élément de réseau, la liaison entre les éléments de réseau peut varier de manière flexible en fonction des besoins réels, évitant ainsi le problème lié au manque ou au gaspillage de ressources de liaison dû à une variation de ressources des éléments de réseau.
PCT/CN2016/104247 2015-11-06 2016-11-01 Procédé et dispositif de traitement flexible de liaison entre des éléments de réseau Ceased WO2017076278A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510753227.8 2015-11-06
CN201510753227.8A CN105307217A (zh) 2015-11-06 2015-11-06 网元间链路弹性处理方法及装置

Publications (1)

Publication Number Publication Date
WO2017076278A1 true WO2017076278A1 (fr) 2017-05-11

Family

ID=55203845

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/104247 Ceased WO2017076278A1 (fr) 2015-11-06 2016-11-01 Procédé et dispositif de traitement flexible de liaison entre des éléments de réseau

Country Status (2)

Country Link
CN (1) CN105307217A (fr)
WO (1) WO2017076278A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114390024A (zh) * 2021-12-31 2022-04-22 中科南京移动通信与计算创新研究院 接入网协议栈测试方法、系统及存储介质

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105307217A (zh) * 2015-11-06 2016-02-03 华为技术有限公司 网元间链路弹性处理方法及装置
EP3203686B1 (fr) * 2016-02-08 2019-12-11 Comptel Corporation Interaction de fonctions dans un réseau virtualisé
CN108737144B (zh) * 2017-04-24 2021-06-29 华为技术有限公司 资源管理的方法和设备
CN111770491B (zh) * 2020-06-08 2024-01-02 上海依图网络科技有限公司 一种数据链路建立方法及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040208180A1 (en) * 2003-04-15 2004-10-21 Light Allen Miles System and method for supporting auto-negotiation among standards having different rates
CN1964544A (zh) * 2005-11-11 2007-05-16 大唐移动通信设备有限公司 移动通信系统中基站侧信令链路动态分配的方法
CN101340388A (zh) * 2008-08-13 2009-01-07 华为技术有限公司 网络流量控制的方法、装置和系统
CN105307217A (zh) * 2015-11-06 2016-02-03 华为技术有限公司 网元间链路弹性处理方法及装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103684841A (zh) * 2012-09-26 2014-03-26 中兴通讯股份有限公司 一种网管服务器和链路发现的比对方法
CN103491129B (zh) * 2013-07-05 2017-07-14 华为技术有限公司 一种业务节点配置方法、业务节点池注册器及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040208180A1 (en) * 2003-04-15 2004-10-21 Light Allen Miles System and method for supporting auto-negotiation among standards having different rates
CN1964544A (zh) * 2005-11-11 2007-05-16 大唐移动通信设备有限公司 移动通信系统中基站侧信令链路动态分配的方法
CN101340388A (zh) * 2008-08-13 2009-01-07 华为技术有限公司 网络流量控制的方法、装置和系统
CN105307217A (zh) * 2015-11-06 2016-02-03 华为技术有限公司 网元间链路弹性处理方法及装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114390024A (zh) * 2021-12-31 2022-04-22 中科南京移动通信与计算创新研究院 接入网协议栈测试方法、系统及存储介质
CN114390024B (zh) * 2021-12-31 2024-03-19 中科南京移动通信与计算创新研究院 接入网协议栈测试方法、系统及存储介质

Also Published As

Publication number Publication date
CN105307217A (zh) 2016-02-03

Similar Documents

Publication Publication Date Title
CN112136294B (zh) 应用功能影响业务路由的消息和系统
US10484265B2 (en) Dynamic update of virtual network topology
KR102140636B1 (ko) Nfv를 통한 풀 기반 m2m 서비스 계층 구축
CN110366276B (zh) 服务化架构基站
US10764939B2 (en) Network function processing method and related device
CN110366144A (zh) 一种订阅服务的方法及装置
CN105979007A (zh) 加速资源处理方法、装置及网络功能虚拟化系统
WO2017076278A1 (fr) Procédé et dispositif de traitement flexible de liaison entre des éléments de réseau
WO2017128702A1 (fr) Procédé et dispositif de traitement pour une mobilité d'application
CN103916320B (zh) 一种vm设备跨网迁移后的报文处理方法及装置
WO2021077767A1 (fr) Procédé et appareil de gestion de service
CN114205295B (zh) 在计算机网络中建立虚拟网络路由
CN110392370A (zh) 一种安全算法的协商方法及装置
CN116250222A (zh) 一种业务连续性事件的通知方法及装置
WO2021057526A1 (fr) Procédé de reprise sur sinistre pour dispositif de passerelle et dispositif de communication
CN112788088A (zh) 多边缘云的网络通信控制方法及边缘运算系统
CN110324857B (zh) 一种业务质量数据流的处理方法和装置
CN110710306B (zh) 通信方法及终端、网络设备
WO2023179365A1 (fr) Procédé de communication et appareil de communication
US20250024398A1 (en) Api driven subscriber ims registration status changes and ims routing steering
CN111092770B (zh) 一种虚拟网络管理方法及电子设备
CN106357443B (zh) 一种网络配置的方法及设备
US20230007576A1 (en) Access network intelligent controller for multiple types of access networks
CN113595894B (zh) 服务节点间、客户端节点间通信方法、装置、设备及介质
WO2018077313A1 (fr) Procédé et dispositif de notification de capacité de connexion

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: 16861546

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: 16861546

Country of ref document: EP

Kind code of ref document: A1