WO2019209076A1 - Procédé et dispositif de gestion de mobilité par un service utilisant la commutation multiprotocole par étiquette dans un environnement sdn - Google Patents

Procédé et dispositif de gestion de mobilité par un service utilisant la commutation multiprotocole par étiquette dans un environnement sdn Download PDF

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Publication number
WO2019209076A1
WO2019209076A1 PCT/KR2019/005089 KR2019005089W WO2019209076A1 WO 2019209076 A1 WO2019209076 A1 WO 2019209076A1 KR 2019005089 W KR2019005089 W KR 2019005089W WO 2019209076 A1 WO2019209076 A1 WO 2019209076A1
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WO
WIPO (PCT)
Prior art keywords
service
user terminal
mpls
service type
packet
Prior art date
Application number
PCT/KR2019/005089
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English (en)
Korean (ko)
Inventor
추현승
이지수
김희진
정재엽
Original Assignee
성균관대학교 산학협력단
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Publication of WO2019209076A1 publication Critical patent/WO2019209076A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/50—Routing or path finding of packets in data switching networks using label swapping, e.g. multi-protocol label switch [MPLS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/20—Hop count for routing purposes, e.g. TTL
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
    • H04L47/2408—Traffic characterised by specific attributes, e.g. priority or QoS for supporting different services, e.g. a differentiated services [DiffServ] type of service
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0236—Traffic management, e.g. flow control or congestion control based on communication conditions radio quality, e.g. interference, losses or delay
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/12—Reselecting a serving backbone network switching or routing node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/04—Registration at HLR or HSS [Home Subscriber Server]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters

Definitions

  • the present invention relates to improved mobility of communication services provided in real time.
  • the present invention relates to a method of providing a high level of network service quality to consumers while providing continuous service on the go.
  • the service can be stably provided.
  • the terminal performs handover, it is difficult to provide a continuous service because the terminal is temporarily disconnected from the access point (AP).
  • the present invention divides a flow into a real-time service and a non-real-time service according to a service characteristic according to an embodiment of the present invention, and accordingly, packet delivery delay sensitivity
  • the purpose is to set the value and the handover delay sensitivity value.
  • the switch with the smallest cost is considered in consideration of the set two values, the number of hops between the terminal and the correspondent node (CN), and the available bandwidth of each switch.
  • the packet is forwarded to the desired path without storing the forwarding rule in the table.
  • the service-specific mobility management method using multiprotocol label switching in a software defined network (SDN) environment, (a) to the user terminal Receiving a packet in message transmitted from the access point to the access point (AP) by the access point; (b) checking whether there is a mobile node (MN) identifier matched to the packet in message using data previously stored in the server; And (c) selecting one of the plurality of switches as an anchor to which the user terminal is connected, based on whether a matching mobile node identifier exists.
  • MN mobile node
  • an apparatus for managing mobility by service using MPLS in an SDN environment comprising: a memory in which a program for performing a service-specific mobility management method using MPLS in an SDN environment is recorded; And a processor for executing a program, wherein the processor receives a packet in message transmitted from the access point by the user terminal to the access point (AP) by the user terminal, and executes the server.
  • MN mobile node
  • the flow is divided into a real-time service and a non-real-time service according to the service characteristics, it is possible to set the packet transfer delay sensitivity value and the handover delay sensitivity value accordingly.
  • the smallest switch When selecting the anchor point, considering the two values set, the number of hops between the terminal and the corresponding node, and the available bandwidth of each switch, the smallest switch transmits the packet to the desired path without storing the forwarding rule in the corresponding flow table.
  • network resource usage efficiency can be increased and QoE can be improved.
  • FIG. 1 is a diagram illustrating a system structure of a mobility management scheme for each service using MPLS in an SDN environment according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating a configuration of an apparatus for managing mobility for each service using MPLS in an SDN environment according to an embodiment of the present invention.
  • 3 and 4 are flowcharts illustrating a service management method for each service using MPLS in an SDN environment according to an embodiment of the present invention.
  • FIG. 5 is a diagram illustrating an anchor selection algorithm according to an embodiment of the present invention.
  • FIG. 6 is a flowchart illustrating an operation process according to whether a mobile node identifier exists according to an embodiment of the present invention.
  • FIG. 7 is a flowchart illustrating a handover process according to an embodiment of the present invention.
  • the device 100 may refer to a service management device for each service using MPLS in an SDN environment.
  • FIG. 1 is a diagram illustrating a system structure of a mobility management scheme for each service using MPLS in an SDN environment according to an embodiment of the present invention.
  • the scheme of the present invention operates in an SDN-based network environment, and the structure includes an SDN controller, an OpenFlow-enabled switch, and an access point.
  • an open network operating system (ONOS) controller as the SDN controller is described, but the SDN controller that can be used in the present invention is not limited thereto.
  • ONOS open network operating system
  • a segment routing API which is an ONOS application
  • two development modules may be used to classify a service used by a user terminal and manage terminal mobility according to a corresponding service characteristic.
  • the server may include a mobile node (MN) identifier, which is a user terminal identifier, a mobile access gateway (MAG) identifier to which the user terminal is connected, a prefix assigned to the user terminal, a service type used, and a corresponding service. Save anchor information when used.
  • MN mobile node
  • MAG mobile access gateway
  • the server may recognize a handover for the user terminal by using the above-described information, and may perform a handover process suitable for the corresponding service when the used service is changed.
  • the mobile controller module in the server may process the Ipv6 signaling and provide the same prefix to the user terminal when performing the handover.
  • the server may provide a new prefix to the user terminal.
  • the server may provide a method of classifying services used by the user terminal and selecting an anchor point in consideration of service characteristics through an anchor point selection algorithm.
  • segment routing API may mean an ONOS application used for a multiprotocol label switching (MPLS) function.
  • MPLS multiprotocol label switching
  • the server may set a packet path from the user terminal to the corresponding node by using the ONOS application, and transmit the corresponding packet as a label.
  • packets are delivered using a delivery point identifider (DPID) list and a label.
  • DPID delivery point identifider
  • the DPID may include a switch identifier
  • a label may include a virtual local area network (VLAN) identifier.
  • VLAN virtual local area network
  • OpenFlow can be used as a representative southbound API used by the SDN controller to manage the switches and access points forming the topology.
  • both the switch and the access point may be open flow enabled devices so that the devices can communicate with the controller using open flow.
  • Each switch has a flow table, and if there is an entry that matches the input flow, the flow is sent to an output-port according to the action value of that entry.
  • the controller adds an entry for the flow to the flow table, and when the same flow is processed, the controller can process the corresponding process without communication of the controller.
  • FIG. 2 is a diagram illustrating a configuration of an apparatus for managing mobility for each service using MPLS in an SDN environment according to an embodiment of the present invention.
  • the mobility management apparatus 100 for each service using MPLS in an SDN environment includes a communication module 110, a memory 120, a processor 130, and a database 140.
  • the communication module 110 provides a communication interface necessary for providing a transmission / reception signal between the service management device 100 using MPLS and a user terminal in the form of packet data in an SDN environment in association with the communication network 300.
  • the communication module 110 may receive a data request from a user terminal and transmit data as a response thereto.
  • the communication module 110 may be a device including hardware and software necessary for transmitting and receiving a signal such as a control signal or a data signal through a wired or wireless connection with another network device.
  • the memory 120 records a program for performing a service management method using MPLS in an SDN environment.
  • the processor 130 performs a function of temporarily or permanently storing data processed.
  • the memory 120 may include a volatile storage media or a non-volatile storage media, but the scope of the present invention is not limited thereto.
  • the processor 130 controls the entire process of providing a service management method for each service using multi-protocol label switching in a kind of SDN environment. Each step performed by the processor 130 will be described later with reference to FIGS. 4 and 5.
  • the processor 130 may include all kinds of devices capable of processing data, such as a processor.
  • the 'processor' may refer to a data processing apparatus embedded in hardware having, for example, a circuit physically structured to perform a function represented by code or instructions included in a program.
  • a data processing device embedded in hardware a microprocessor, a central processing unit (CPU), a processor core, a multiprocessor, and an application-specific integrated device (ASIC) It may include a processing device such as a circuit, a field programmable gate array (FPGA), etc., but the scope of the present invention is not limited thereto.
  • the database 140 stores data accumulated while performing a service-specific mobility management method using multiprotocol label switching.
  • the database 140 may store a mobile node identifier, which is a terminal identifier, a mobile access gateway identifier to which the user terminal is connected, a prefix assigned to the user terminal, a service type used, anchor information set when the service type is used, and the like.
  • 3 to 4 are flowcharts illustrating a service management method for each service using MPLS in an SDN environment according to an embodiment of the present invention.
  • a packet IN message transmitted to an access point by a user terminal is received from a corresponding access point (S410).
  • the packet in message is a message transmitted when the user terminal approaches the access point without being connected to any access point, or when the access point is accessed while being connected to an access point other than an access point close to the current user terminal. It may mean a message to be transmitted.
  • the presence of the mobile node identifier matching the packet in message is checked using the data previously stored in the server (S420).
  • the server checks the service type of the user terminal and sets an anchor based on the result (S430).
  • the service type is determined in real time and the operation S430 is performed.
  • a packet in message transmitted to the access point by the user terminal is received from the access point (S510).
  • the presence of the mobile node identifier matching the packet in message is checked using the data previously stored in the server (S520).
  • the user terminal determines the service type in use (S530).
  • any one of the plurality of switches is selected as an anchor to which the user terminal is connected based on the service type according to the corresponding user type (S540).
  • FIG 5 illustrates an anchor point selection algorithm according to an embodiment of the present invention.
  • a service type of the present invention is classified into a real time service and a non-real time service, and a corresponding service type is determined based on packet transmission delay sensitivity and handover delay sensitivity.
  • a service type is determined according to a sensitivity having a relatively high value among the handover delay sensitivity and the packet transmission delay sensitivity of a service being used by a user terminal, and the server is relatively high in handover delay sensitivity. If the service type is designated as a non-real time service, and conversely, if the packet transmission delay sensitivity is relatively high, the service type may be designated as a real time service.
  • the packet transmission delay sensitivity may mean a cost for the flow to be successfully transmitted to the destination
  • the handover delay sensitivity may mean a delay time occurring during handover
  • the server selects an anchor point having a minimum distance to the mobile node, thereby minimizing the change of the existing transmission path and reducing the handover delay. .
  • the server may focus on maintaining and improving the optimal path by selecting the anchor point having the minimum distance to the corresponding node.
  • P prev_j set of switches ⁇ S 1_j , S 2_j ,... , S n_j >
  • P opt_j Optimal path between MN and CN during MN movement
  • P prev_j is initialized to null.
  • P prev_j opt_j If the number of hops of prev_j P exceeds the value obtained by adding the number of hops to the threshold of P opt_j or, P prev_j is null, P is a P prev_j opt_j.
  • C is HO S S CN and MN's transmission can hop, C TO obtains channel transmission hops between the MN and S S S CN in by the i_j.
  • C total is obtained by considering ⁇ and ⁇ for all S i_j .
  • the switch in P prev_j having the minimum C total is selected as the anchor point of flow J.
  • FIG. 6 is a flowchart illustrating an operation process according to whether a mobile node identifier exists according to an embodiment of the present invention.
  • a control module including an mobility control, a service classification, an anchor point selection module, and an OVS ( open vswitch).
  • the terminal may perform a first attachment process with a nearby AP as shown in FIG. 7 to communicate with other devices.
  • software such as Zabbix may be used to monitor IT resources in a cloud environment.
  • the mobility control module checks whether a mobile node identifier that maps to a server exists.
  • the process of setting the prefix and anchor necessary for the user terminal can be performed.
  • the service classification module may classify the service type according to the sensitivity of the service flow.
  • the switch having the minimum distance from the user terminal is selected as the anchor and the corresponding information is stored in the server.
  • FIG. 7 is a flowchart illustrating a handover process according to an embodiment of the present invention.
  • the user terminal When the user terminal moves in the process of communicating through the corresponding node and approaches the other access point, the user terminal disconnects from the existing access point and performs the connection with the closer access point.
  • the mobility control module determines that the mobile node identifier and matching information exist in the server, and recognizes a handover of the user terminal.
  • the service type previously stored in the server and the service type of the corresponding user terminal are compared for mobility management according to the service type.
  • the mobility control module is an anchor point. The selection algorithm is used.
  • the algorithm selects an anchor role switch in consideration of the service type value, the number of hops, and the bandwidth of the switch, and when the selection is completed, the corresponding information is stored in the server and the process is completed.
  • the speech feature analysis method for determining the authenticity of a report according to an embodiment of the present invention described above may be implemented in the form of a recording medium including instructions executable by a computer, such as a program module executed by a computer.
  • Such recording media includes computer readable media, and computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media.
  • computer readable media includes computer storage media, which are volatile and nonvolatile implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Both removable and non-removable media.

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

Abstract

L'invention concerne un procédé de gestion de mobilité par un service utilisant une commutation multiprotocole par étiquette (MPLS) dans un environnement de réseau défini par logiciel (SDN) pouvant comprendre : (a) une étape de réception, à partir d'un point d'accès (AP), d'un message Packet_IN transmis par un terminal utilisateur au point d'accès ; (b) une étape consistant à déterminer s'il existe un identifiant de nœud mobile (MN) correspondant au message Packet_IN en utilisant des données pré-stockées dans un serveur ; et (c) une étape de sélection d'un commutateur parmi une pluralité de commutateurs en tant qu'ancre à laquelle le terminal utilisateur est connecté, sur la base du fait qu'il existe un identifiant de nœud mobile correspondant.
PCT/KR2019/005089 2018-04-27 2019-04-26 Procédé et dispositif de gestion de mobilité par un service utilisant la commutation multiprotocole par étiquette dans un environnement sdn WO2019209076A1 (fr)

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KR1020180049163A KR101992869B1 (ko) 2018-04-27 2018-04-27 Sdn환경에서 멀티 프로토콜 라벨 스위칭을 이용한 서비스별 이동성 관리 방법 및 장치
KR10-2018-0049163 2018-04-27

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KR102387114B1 (ko) * 2019-10-29 2022-04-15 숭실대학교 산학협력단 5G 네트워크에서 QoS를 반영한 라우팅 방법, 이를 수행하기 위한 기록 매체 및 장치
KR102407851B1 (ko) * 2020-11-10 2022-06-13 국방과학연구소 이동성 관리 앵커 선택 장치, 방법, 컴퓨터 판독 가능한 기록매체 및 컴퓨터 프로그램

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013043088A1 (fr) * 2011-09-20 2013-03-28 Telefonaktiebolaget L M Ericsson (Publ) Procédés et nœuds de réseau pour commander l'utilisation de mise en cache dans un système de télécommunication
KR20130031928A (ko) * 2010-06-17 2013-03-29 퀄컴 인코포레이티드 패킷 데이터 네트워크(ｐｄｎ) 접속 관리
KR20150035143A (ko) * 2013-09-27 2015-04-06 에스케이텔레콤 주식회사 이동통신 서비스 제공 방법 및 이를 위한 장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130031928A (ko) * 2010-06-17 2013-03-29 퀄컴 인코포레이티드 패킷 데이터 네트워크(ｐｄｎ) 접속 관리
WO2013043088A1 (fr) * 2011-09-20 2013-03-28 Telefonaktiebolaget L M Ericsson (Publ) Procédés et nœuds de réseau pour commander l'utilisation de mise en cache dans un système de télécommunication
KR20150035143A (ko) * 2013-09-27 2015-04-06 에스케이텔레콤 주식회사 이동통신 서비스 제공 방법 및 이를 위한 장치

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