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WO2018004057A1 - Procédé et système d'association d'un port de mp-gw à chaque flux de service dans un environnement à trajets multiples - Google Patents

Procédé et système d'association d'un port de mp-gw à chaque flux de service dans un environnement à trajets multiples Download PDF

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Publication number
WO2018004057A1
WO2018004057A1 PCT/KR2016/008126 KR2016008126W WO2018004057A1 WO 2018004057 A1 WO2018004057 A1 WO 2018004057A1 KR 2016008126 W KR2016008126 W KR 2016008126W WO 2018004057 A1 WO2018004057 A1 WO 2018004057A1
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WIPO (PCT)
Prior art keywords
mptcp
traffic
terminal
port
mapping
Prior art date
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Ceased
Application number
PCT/KR2016/008126
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English (en)
Korean (ko)
Inventor
전병천
김의국
유창모
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NETVISION TELECOM Inc
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NETVISION TELECOM Inc
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Publication date
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Priority to CN201680088888.6A priority Critical patent/CN109644161B/zh
Publication of WO2018004057A1 publication Critical patent/WO2018004057A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04L45/54—Organization of routing tables
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40—Support for services or applications
    • 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
    • H04L45/24—Multipath
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/61—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources taking into account QoS or priority requirements

Definitions

  • the present invention relates to an MP-GW port mapping method and system for each service flow. More specifically, the present invention relates to an application service for properly applying an EPC solution (Policy and Charging rule) of an LTE network in a multipath (LTE and Wifi) environment. It relates to an MP-GW port mapping method and system for each service flow capable of mapping specific ports of MP-GW.
  • EPC solution Policy and Charging rule
  • a user equipment is a user terminal that has a built-in LTE chip, eNB (Evolved Node B) is called "LTE base station" and the radio between the UE and the LTE network It is the equipment that provides the connection.
  • UE user equipment
  • eNB Evolved Node B
  • LTE base station the radio between the UE and the LTE network
  • the equipment that provides the connection.
  • the connection between the UE and the eNB is a wireless connection, and the rest are all wired connections.
  • SAE GW System Architecture Evolution Gateway
  • S-GW Serving-Gateway
  • P-GW Packet data network-Gateway
  • EPS Bearer Logical Tunnel generated in ⁇ UE-eNB-S-GW-P-GW ⁇
  • MME Mobility Management Entity
  • HSS Home Subscriber Server
  • PCC Policy and Charging Control
  • the PCC function is performed in the Policy and Charging Control Function (PCRF) and the Policy and Charging Enforcement Function (PCEF) during the LTE network configuration.
  • PCRF determines PCC rules for each service data flow, which is determined based on provider policy (QoS, gate status, billing policy).
  • PCEF PCEF
  • P-GW detects the service data flow and imports the PCC rules determined by the PCRF and applies the corresponding rules to the corresponding user packets.
  • an authentication request is first made to the MME, and the MME receives an authentication vector from the HSS and performs mutual authentication between the UE and the MME. If authentication is successful, MME receives QoS information from HSS necessary for EPS Bearer creation. After that, the MME sends a session creation request to the S-GW and the S-GW forwards the request to the P-GW. The P-GW sends a request from the PCRF to the Pre-defined PCC Rule (5-tuple Filtering Rule) for the subscriber.
  • LTE < RTI ID 0.0 > > < / RTI >
  • the PCC Policy and Charging Control
  • the PCC Policy and Charging Control preset in the SAE-GW based on the 5-tuple filter in the corresponding TCP traffic flow
  • MPTCP Multi-Path TCP
  • MP-GW MPTCP Proxy GateWay
  • MP-GW MPTCP Proxy GateWay
  • the SAE-GW is located between the terminal and the MP-GW.
  • the destination IP address and port information of the traffic flow sent from the terminal are not the application server providing the service, but the IP address and the MP-GW. Although it is port information, destination IP address and port information registered in 5-tuple filter in SAE-GW are application server information. Therefore, PCC rule can be applied to the traffic flow because it is not matched properly in 5-tuple filter. There is no problem.
  • an object of the present invention is to map a specific port of the MP-GW for each service to properly apply the EPC solution (Policy and Charging rule) of the LTE network in a multi-path environment It is to provide an MP-GW port mapping method and system for each service flow.
  • the method includes the steps of: a) transmitting, between a terminal and an MP-GW, multi-path transmission control protocol (MPTCP) traffic including a port number of the MP-GW corresponding to the application server IP address; And in the 5-tuple filter for MPTCP traffic matching additionally provided in SAE-GW to provide different policy and charging for each service flow, pre-registered mapping information and the port number of the MP-GW included in the MPTCP traffic And b) being mapped.
  • MPTCP multi-path transmission control protocol
  • the terminal sends a policy request message to the MP-Manager to use the service step 1); And 2) when the MP-Manager receives the policy request message, forwarding a port list of the application server IP address and the port number of the MP-GW to the terminal through a policy response message.
  • the MP-Manager is the IP address of two subflows (LTE, Wifi) for one terminal, 3) delivering a session mapping table (Session Mappingtable) including the application server IP address and port number, the IP address and port number information of the MP-GW allocated for the corresponding service flow to the MP-GW.
  • Session Mappingtable Session Mappingtable
  • the MPTCP subtraffic is transmitted from one terminal to the MP-GW through each subflow (LTE, Wifi) in step a)
  • the two MPTCP subtraffics are determined by referring to the session mapping table in the MP-GW. After consolidation into a single TCP traffic, it can be delivered to the destination application server through a normal TCP session, External Session.
  • mapping information previously registered in the 5-tuple filter for MPTCP traffic matching is information for mapping an IP address of an application server and a port number of the MP-GW, and in step b), 5-tuple for the MPTCP traffic matching
  • the service flow of the MPTCP traffic may be identified according to the port number of the MP-GW mapped by the filter.
  • the system includes: a terminal transmitting MPTCP traffic including the port number of the MP-GW corresponding to the application server IP address to the MP-GW or receiving from the MP-GW; And a 5-tuple filter for MPTCP traffic matching, which is provided between the terminal and the MP-GW and provides different policies and charging for each service flow, and is pre-registered in the 5-tuple filter for MPTCP traffic matching. And the SAE-GW to which the mapped information and the port number of the MP-GW included in the MPTCP traffic are mapped.
  • MP-GW MPTCP Proxy GateWay
  • the SAE-GW is a 5-tuple for MPTCP traffic matching, in which information mapping an IP address of an application server and a port number of an MP-GW is registered separately from the 5-tuple filter provided for TCP traffic matching. Further comprising a filter, it is possible to identify the service flow of the MPTCP traffic according to the port number of the MP-GW mapped by the 5-tuple filter for MPTCP traffic matching.
  • the 5-tuple filter for MPTCP traffic matching may have the same Quality of Service (QoS) and charging rules of the 5-tuple filter for TCP traffic matching.
  • QoS Quality of Service
  • the MP-GW port mapping system upon receiving a Policy request message from the terminal, the port list mapping the application server IP address and the port number of the MP-GW through a policy response message MP-Manager for delivering to the terminal; may be further included.
  • LTE and Wifi when there are two subflows, LTE and Wifi, between the terminal and the MP-GW, when the MP-Manager receives a policy request message from the terminal, two subflows (LTE, Wifi) of the terminal are received.
  • a session mapping table including an IP address, an application server IP address and a port number, and an IP address and port number information of an MP-GW allocated for a corresponding service flow is delivered to the MP-GW, and the MP-GW
  • the MPTCP subtraffic is received from the terminal through each subflow (LTE, Wifi)
  • the two MPTCP subtraffics are combined into one TCP traffic by referring to the session mapping table, and then the destination is transmitted through an external session which is a general TCP session. It can be delivered to the application server.
  • mapping information including the IP address of the application server providing each service to the MPTCP traffic between the terminal and the MP-GW and the port number of the MP-GW, and match the new MPTCP traffic on the existing EPC (SAE-GW).
  • SAE-GW existing EPC
  • FIG. 1 is a block diagram of a typical LTE network.
  • FIG. 2 is a schematic diagram showing a function of aggregation of LTE and WiFi traffic in layer4 by applying MPTCP.
  • FIG. 3 is a diagram illustrating a process in which general TCP traffic is matched to a 5-tuple filter of a SAE-GW in a conventional general LTE network.
  • FIG. 4 is a diagram illustrating that matching is not performed properly when MPTCP traffic is applied to a 5-tuple filter of SAE-GW in a multipath network without port mapping.
  • FIG. 5 is a diagram illustrating that MPTCP traffic and general TCP traffic are matched by adding a new port-based 5-tuple filter to SAE-GW in a port mapping applied multipath network.
  • FIG. 6 is a diagram illustrating an operation in accordance with a port list form and port mapping information dropped from a MP-Manager to a terminal.
  • FIG. 7 is a diagram illustrating mapping for specific services for MPTCP Subflow (LTE, WiFi) of a terminal.
  • FIG. 2 is a schematic diagram showing a function of aggregation of LTE and WiFi traffic in layer4 by applying MPTCP.
  • MPTCP can allow LTE and WiFi to operate independently of each other at the same time. Accordingly, the bandwidth of LTE and WiFi is combined to increase the speed, thereby increasing the speed.
  • the MPTCP flow is the content of the LTE flow that is a subflow (FIGS. 3, 4, and 5).
  • FIG. 3 is a diagram illustrating an operation process of a conventional EPC solution in a general LTE network (process in which general TCP traffic is matched with a 5-tuple filter of SAE-GW).
  • a single TCP session is established between the UE and the application server App Svr, and the IP address and port information of the uplink destination application server included in the TCP traffic in the SAE-GW located therebetween, By mapping the IP address and port information of the destination terminal of the downlink with the information registered in the 5-tuple filter provided in the SAE-GW, matching of TCP traffic is performed.
  • the PCC rule (QoS & Charging Rule) can be applied to the corresponding traffic.
  • SAE-GW refers to an integrated S-GW and P-GW part of the LTE component that performs UE authentication and PCC functions.
  • FIG. 4 is a diagram illustrating that matching is not performed when MPTCP traffic is applied to a 5-tuple filter of SAE-GW in a multipath network without port mapping.
  • the source IP address and port information includes the terminal information and the destination IP
  • the address and port information are MPTCP traffic including the information of the MP-GW.
  • the source IP address and port information are information of the MP-GW, and the IP address and port information of the destination are sessions using general TCP traffic including information of the application server.
  • the destination IP address and port information of the uplink (UL) MPTCP traffic are the information of the MP-GW, not the application server. You will not be able to map an application server IP address / port number on the 5-tuple filter in GW.
  • the uplink (UL) MPTCP traffic includes 10.10.10.10, which is the IP address (dstIP) of the destination MP-GW, and 7000, which is the port number of the MP-GW, from the terminal to the MP-GW.
  • dstIP IP address
  • 7000 which is the port number of the MP-GW
  • the application server information is set as the destination information (dstIP is 1.1.1.1, dstPort is 80), and thus the corresponding traffic cannot be mapped with the preset mapping information.
  • the present invention is to solve the above-described problem, the port mapping of the MPTCP Proxy GateWay (MP-GW) for each service flow formed between the terminal and the application server to use a specific application service in a multi-path (Multi-Path) environment A method for mapping and a system therefor.
  • MP-GW MPTCP Proxy GateWay
  • FIG. 5 shows that MPTCP traffic is matched by applying port mapping in a multi-path environment.
  • the MP-GW port mapping system for each service flow uses the MPTCP traffic including the port number of the MP-GW 10 corresponding to the application server IP address to be used. It generates and transmits to the MP-GW (10) or received from the MP-GW (10) includes a terminal, and the SAE-GW (200) provided between the terminal 100 and the MP-GW (10) It is done by
  • the SAE-GW 200 has a 5-tuple filter for MPTCP traffic matching to provide different policy and charging for each service flow in a multipath environment, in addition to the 5-tuple filter for matching TCP traffic described above. And mapping port information registered in the 5-tuple filter for MPTCP traffic matching with the port number of the MP-GW 10 included in the MPTCP traffic.
  • the mapping information pre-registered in the 5-tuple filter for MPTCP traffic matching is information for mapping the IP address of the application server 20 and the port number of the MP-GW 10, as shown in FIG.
  • the 5-tuple filter for traffic matching includes the IP address / port number of the terminal as the source, the IP address / port number of the MP-GW as the destination, and the protocol ID.
  • MP-GW-> terminal a list including the IP address / port number of the source MP-GW, the IP address / port number of the terminal that is the destination, and the protocol ID is registered.
  • the port number of the MP-GW Is information on which application server 20 is mapped to the IP address.
  • the SAE-GW 200 identifies which service flow the MPTCP traffic corresponds to according to the port number of the MP-GW 10 mapped by the 5-tuple filter for MPTCP traffic matching (communication with which application server). Perception).
  • the 5-tuple filter for MPTCP traffic matching has the same Quality of Service (QoS) and charging rules of the existing 5-tuple filter for TCP traffic matching.
  • QoS Quality of Service
  • MP-GW port mapping system when receiving a policy request message from the terminal 100, through the policy response message to the application server IP address and the port number of the MP-GW (10) It further comprises an MP-Manager (300) for transmitting the mapped port list to the terminal (100).
  • the terminal 100 corresponds to the application server 20 of the destination by using the mapping information of the port list of the policy response message received in the authentication process in order to specify the application server 20 corresponding to the service to be used.
  • the session is established by specifying the port number of the MP-GW 10.
  • the MP-GW 10 is assigned a different port number for each application server. Accordingly, the terminal 100 includes the port number of the MP-GW 10 corresponding to the destination application server in the MPTCP traffic transmitted to the MP-GW 10, and the MP-GW 10 is received through a specific port.
  • the terminal 100 includes the port number of the MP-GW 10 corresponding to the destination application server in the MPTCP traffic transmitted to the MP-GW 10, and the MP-GW 10 is received through a specific port.
  • the terminal 100 sends a policy request message to the MP-Manager 300, and when the MP-Manager 300 receives the policy request message, it generates a policy response message and sends it to the terminal 100.
  • the policy response message includes a port list in which the application server IP address and the port number of the MP-GW 10 are mapped.
  • the multi-path transmission control protocol (MPTCP) traffic including the port number of the MP-GW 10 corresponding to the application server IP address is transmitted between the terminal 100 and the MP-GW 10.
  • MPTCP multi-path transmission control protocol
  • the 5-tuple filter for MPTCP traffic matching additionally provided in the SAE-GW 200 to provide different policies and charging for each service flow, the previously registered mapping information and the MPTCP traffic are included in the MPTCP traffic.
  • MP-GW port mapping for each service flow is performed.
  • general TCP traffic is matched through a 5-tuple filter for existing TCP traffic matching.
  • FIG. 6 shows an operation of the MP-GW port list for each application server dropped from the MP-Manager 300 to the terminal 100 and the mapping of the port list.
  • the service session is based on the MP-GW 10 and the source IP address and port are the terminal 100 and the destination IP address and port are MP between the terminal 100 and the MP-GW 10.
  • MPTCP traffic which is a GW, is divided into sessions of general TCP traffic between the MP-GW and the application server 20, where the destination IP address and port are the MP-GW, and the destination IP address and port are the application server 20.
  • the destination application server information when setting the mapping information of one particular destination application server 20, the destination application server information is set to '1.1.1.1/32:1000' and one IP address 1.1.1.1. Map to MP-GW (10) port number 1000.
  • the TCP dstPort of the MP-GW 10 is set to 1000 and sent.
  • the MPTCP traffic delivered to a specific port of the MP-GW 10 is converted to general TCP traffic in the MP-GW 10 is transferred to the application server 20 and the service is made.
  • a plurality of destination application servers may be configured by mapping to one MP-GW port number.
  • the destination application server information is set to '2.2.2.0/24:1001' and mapped to the MP-GW port number 1001 for the plurality of destination application server addresses 2.2.2.1 to 2.2.2.254. do. Therefore, when the terminal 100 sends traffic to the destination application server addresses 2.2.2.1 to 2.2.2.254, the TCP 100 sets the TCP dstPort of the MP-GW 10 to 1001.
  • FIG. 7 is a process for applying port mapping to MPTCP, and shows mapping for specific services for each flow of LTE and WiFi, which are MPTCP subflows of the terminal 100.
  • the MP-Manager 300 allocates a specific specific port number of the MP-GW 10 for each service flow and MP-per service-specific in response to the policy request of the terminal 100.
  • the terminal 100 establishes an MPTCP session with the MP-GW 10 with the port number corresponding to the specific service with the service port list, wherein the terminal 100 is connected with the terminal 100. If two subflows, LTE and Wifi, exist between the MP-GW 10, an MPTCP session is established through the two subflows.
  • the two subflows divided by one terminal 100 should be integrated into one specific TCP flow (external session part) receiving a service.
  • a mapping table including all the information of each subflow is required.
  • the MP-Manager 300 when the MP-Manager 300 receives a policy request message from a specific terminal, the IP address information of the two subflows (LTE and WiFi) of the corresponding terminal, the IP address of the service (application) server, and the like.
  • the session mapping table including the information on the port, the IP address of the MP-GW 10 allocated to the corresponding service flow and the port number is dropped on the MP-GW 10.
  • the MP-GW 10 when the MP-GW 10 transmits the MPTCP sub-traffic from one terminal through each subflow (LTE, Wifi), the MP-GW 10 refers to the session mapping table and converts the two MPTCP sub-traffics into general TCP traffic. It can be delivered to the application server 20 as a destination through an external session which is a general TCP session.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

La présente invention concerne un procédé et un système d'association de ports de MP-GW spécifiques à un flux de service, visant à appliquer une solution EPC existante (règle de politique et de facturation) à une solution d'agrégation à trajets multiples qui est une solution MPTCP. Autrement dit, la présente invention peut ajouter, dans un trafic MPTCP entre un terminal et une MP-GW, des informations d'association entre un serveur d'applications et un numéro de port de MP-GW et peut ajouter nouvellement, à l'EPC existant (SAE-GW), un filtre à 5 uplets servant à la mise en correspondance de trafic MPTCP, de façon à effectuer la mise en correspondance de trafic MPTCP sans ajouter un dispositif matériel ou une fonction logicielle séparés. Par conséquent, la règle existante de politique et de facturation appliquée à un trafic TCP typique conventionnel peut également être appliquée à un trafic MPTCP.
PCT/KR2016/008126 2016-06-30 2016-07-26 Procédé et système d'association d'un port de mp-gw à chaque flux de service dans un environnement à trajets multiples Ceased WO2018004057A1 (fr)

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CN201680088888.6A CN109644161B (zh) 2016-06-30 2016-07-26 多路径环境中的按服务流划分的mp-gw端口映射方法及系统

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KR1020160082732A KR101769344B1 (ko) 2016-06-30 2016-06-30 다중 경로 환경에서의 서비스 플로우 별 mp-gw 포트 매핑 방법 및 시스템
KR10-2016-0082732 2016-06-30

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WO2022199202A1 (fr) * 2021-03-23 2022-09-29 北京汇钧科技有限公司 Procédé et appareil de planification de trafic et dispositif électronique et support lisible par ordinateur

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KR102648720B1 (ko) * 2017-12-20 2024-03-15 주식회사 케이티 동적 터널링 기반 트래픽 전송 시스템, 그리고 이의 시그널링 방법
KR102304202B1 (ko) * 2019-10-31 2021-09-23 에스케이텔레콤 주식회사 데이터중계장치 및 데이터 중계 방법, 중계기 관리장치
CN115866097B (zh) * 2022-12-06 2025-10-10 北京东土军悦科技有限公司 一种多径tcp网关和数据转发方法

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WO2022199202A1 (fr) * 2021-03-23 2022-09-29 北京汇钧科技有限公司 Procédé et appareil de planification de trafic et dispositif électronique et support lisible par ordinateur

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