CN106210042A - A kind of user based on end to end network section services request selection method - Google Patents

A kind of user based on end to end network section services request selection method Download PDF

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Publication number
CN106210042A
CN106210042A CN201610540058.4A CN201610540058A CN106210042A CN 106210042 A CN106210042 A CN 106210042A CN 201610540058 A CN201610540058 A CN 201610540058A CN 106210042 A CN106210042 A CN 106210042A
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user
server
request
network
sdn controller
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CN106210042B (en
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粟欣
张黎
龚金金
曾捷
容丽萍
葛璐
贺文成
赵明
王京
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Tsinghua University
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Tsinghua University
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    • 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

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

Abstract

A kind of based on end to end network section the user that the present invention proposes services request selection method, belongs to communication technical field.First, user sends new service request to server by WAP；After server receives request, forward user to service request to SDN controller, and ask SDN controller user is authenticated and authorizes；If user is not authenticated and authorizes, then server sends new service request failure response to user；If user passes through certification and mandate, then server is that user selects suitable network section ID to mate, and notify to set up data transmission link between access network, SDN controller and S/P GW gateway, then server sends new service request success response to user, and returns the particular content of user's request.The present invention, by sharing subnetwork function between cutting into slices at heterogeneous networks, improves resource utilization.

Description

A kind of user based on end to end network section services request selection method
Technical field
The invention belongs to communication technical field, particularly to user based on end to end network section in new network framework Service request selection method.
Background technology
Following 5G network will face plurality of application scenes, and wherein three big typical case's application scenarios respectively strengthen mobile broadband (enhance Mobile Broad Band, eMBB), large-scale machines type communication (massive Machine Type Communication, mMTC) communicate (ultra-Reliability and Low Latency with super reliable low time delay Communication, uRLLC), different application scenarios is each to the requirement of the aspects such as mobility, safety, time delay, reliability Differ.Existing network is difficult to meet the demand of all application scenarios with a kind of framework, however be different application scenario building not Same physical network is the most unrealistic, because the cost building multiple different physical network is that operator is unacceptable.
Under above-mentioned background, next generation mobile networks alliance (Next Generation Mobile Networking, NGMN) propose the concept of network section (Network Slicing, NS), i.e. in a physical infrastructure, utilize software Definition network (Software Defined network, SDN) and network function virtualization (Network Function Virtualization, NFV) etc. technology, the corresponding different application scenarios of the NS that on-demand structure is different, different NS, and NS it Between realize the isolation of logic, any one NS congested, transship, the adjustment that configures does not affects other NS.The different nets in NS Network function (Network Function) shares identical hardware and software platform in identical position, and NS can dynamic retractility and deletion.
The feature of SDN includes: 1, controls and forwards separation.SDN controller performs network control function, bottom OpenFlow Switch (OpenFlow Switch, OF Switch) performs to forward merit according to the OpenFlow flow list item that SDN controller issues Energy.2, plane centralization is controlled.All of control function concentrates in SDN controller, simplifies network O&M, improves route The motility of management.3, SDN controller has the characteristic of software programmable, can meet different by the way of software programming Network controls and the demand of use.
The feature of NFV is: the general commodity (Commercial off-the-shelf, COTS) in infrastructure layer The hardware devices such as calculating/storage/network are decomposed into multiple virtual resource by Intel Virtualization Technology, are created by network management and layout Build required virtual network function, meet the demand of the various application in upper strata.Pass through Intel Virtualization Technology so that application and hardware solution Coupling, network abstraction, so that the feed speed of resource is greatly improved, shorten to several minutes from a couple of days.
Existing NS scheme is concentrated mainly on core net, cuts into slices wireless access network (Radio Access Network, RAN) Research the deficientest.Current third generation partner program (3rd Generation Partnership Project, NS cutting core network part 3GPP) proposed and multiple NS share a RAN, and the RAN part shared is to different NS also Not there are differences, 3GPP is not given for the RAN feature differently configured for NS built under different application scene.Wherein user Asking new service process substantially user to send request to access network, access network sends request to mobile management entity again, mobile Admin instance tangential section selects function to send request, and section selects function selecting network slice number, and sends a request to certification and award Power entity, Certificate Authority entity performs certification and licensing process, and mobile management entity sends new service to session management entity please Asking, set up user face and connect between access network and core net, mobile management entity returns to user to access network and access network Return hospitality and ask response.This user asks new service process to there is repeatedly new service request procedure, and process complexity is loaded down with trivial details, and Signalling exchange is too Many.Meanwhile, do not have effective isolation mech isolation test, all NS to share a RAN between the NS that RAN side is different and easily occur certain Individual network function is unavailable causes all NS comprising this network function unavailable, will bring incalculable damage.
Summary of the invention
It is an object of the invention to overcome the weak point of prior art, it is proposed that a kind of use based on end to end network section Family service request selection method.The inventive method, by sharing subnetwork function between different NS, improves resource as far as possible Utilization rate.
A kind of based on end to end network section the user that the present invention proposes services request selection method, it is characterised in that The method comprises the following steps:
(1) user sends new service by WAP and asks the server to base band resource pool；
(2) this server receives the request that newly services of user, forwards user to service request to SDN controller, and asks User is authenticated and authorizes by this controller；
(3) SDN controller utilizes Authentication and Key Agreement be authenticated user and authorize, if user by certification and Authorize, then proceed to step (4)；If user is not over certification and mandate, then proceed to step (6)；
(4) this server is that user selects suitable network according to COS, use type and the subscription information of user Section ID mates；If the match is successful, then proceed to step (5)；If mating unsuccessful, then this server is that user selects Default network section ID, then proceed to step (5)；
(5) this server notifies access network, sets up the data biography for user's interconnection between SDN controller and S/P-GW gateway Transmission link, proceeds to step (7)；
(6) this server sends new service request failure response by WAP to user；
(7) this server sends new service request success response by WAP to user, and returns user's request Particular content, this user services request and terminates.
User's service request method based on end to end network section that the present invention proposes, its feature and beneficial effect exist In:
The inventive method is that user asks certain specifically to apply the process of (such as web page browsing, voice call etc.), it is intended to for Different application scenarios distributes one and not only contains specific RAN section but also contain the end to end network section (End that core net is cut into slices To End Network Slicing, E2E NS), the present invention can preferably meet the demand of different application scene, it is provided that more preferably Service quality (Quality of Service, QoS) and Consumer's Experience, reduce signaling consumption, improve resource utilization.
Accompanying drawing explanation
Fig. 1 is end to end network based on the inventive method section physics realization figure.
Fig. 2 is the overall procedure block diagram of the inventive method.
In figure: 1, intelligent terminal, 2, WAP, 3, wireless link, 4, server, 5, S/P-GW gateway, 6, SDN control Device processed, 7, the Internet, 8, wire link.
Detailed description of the invention
The present invention propose based on end to end network section user service request selection method, below in conjunction with the accompanying drawings and tool Body embodiment is further described below.
The user based on end to end network section that the present invention proposes services request selection method, based on the inventive method End to end network section physics realization figure is as it is shown in figure 1, in Fig. 1,7 is the Internet, and 3 is wireless link, and 8 is wire link；Main The equipment wanted includes: intelligent terminal 1, WAP 2, server 4, S/P-GW (Service/Packet-gateway) gateway 5 and SDN controllers 6；Wherein, multiple servers 4 constitute a base band resource pool.Intelligent terminal 1 is by wireless link 3 and nothing Line access point 2 is connected, and base band resource pool is connected with WAP 2 and gateway 5 respectively, SDN controller 6 respectively with base-band resource Pond is connected with gateway 5, can interconnect between S/P-GW gateway 5, and the Internet 7 is connected with S/P-GW gateway 5.WAP 2 He Server 4 and between wire/wireless link composition access network, S/P-GW gateway 5 and SDN controller 6 and between have Wired link 8 forms core net.Server 4 in base band resource pool includes: Base-Band Processing function, shared user plane functions are (in full According to encryption, head compression) and network section selection function etc., SDN controller 6 includes: Compliance control surface function (as certification with award Power, mobile management function) and home subscriber server in some functions (such as: offer relevant user physical location information) Deng.The physical infrastructure of bottom realizes the virtualization of physical equipment by Intel Virtualization Technology and NFV, formed one virtualized Environment, utilizes SDN technology to realize chain of command and separates with user face, and network microtomy realizes structure on identical infrastructure Building multiple different virtual network section, the section of the most each network has a unique ID (Identification) number, Meanwhile, selecting a function relatively complete, can meet the section network by default section of major applications scene, it is silent that its ID is known as Recognize NS ID.
The present invention propose based on end to end network section user service request selection method, its flow process as in figure 2 it is shown, Comprise the following steps:
(1) user sends new service by WAP and asks the server to base band resource pool；
(2) this server receives the request that newly services of user, forwards user to service request to SDN controller, and asks User is authenticated and authorizes by this controller；
(3) SDN controller utilizes Authentication and Key Agreement be authenticated user and authorize, if user by certification and Authorize, then proceed to step (4)；If belong to the reasons such as disabled user because of user, not over certification and mandate, then proceed to step (6)；
(4) this server selects suitable NS according to COS, use type and the subscription information etc. of user for user ID mates；If the match is successful, then proceed to step (5)；If mating unsuccessful, then this server is that user selects acquiescence Network section ID, then proceed to step (5)；
(5) this server notifies access network, sets up the data biography for user's interconnection between SDN controller and S/P-GW gateway Transmission link, proceeds to step (7)；
(6) this server sends new service request failure response by WAP to user；
(7) this server sends new service request success response by WAP to user, and returns user's request Particular content, this user services request and terminates.

Claims (1)

1. a user based on end to end network section services request selection method, it is characterised in that the method includes following Step:
(1) user sends new service by WAP and asks the server to base band resource pool；
(2) this server receives the request that newly services of user, forwards user to service request to SDN controller, and asks this control User is authenticated and authorizes by device processed；
(3) SDN controller utilizes Authentication and Key Agreement be authenticated user and authorize, if user by certification and awards Power, then proceed to step (4)；If user is not over certification and mandate, then proceed to step (6)；
(4) this server is that user selects suitable network to cut into slices according to COS, use type and the subscription information of user ID mates；If the match is successful, then proceed to step (5)；If mating unsuccessful, then this server is that user selects acquiescence Network section ID, then proceed to step (5)；
(5) this server notifies access network, sets up the data chain for user's interconnection between SDN controller and S/P-GW gateway Road, proceeds to step (7)；
(6) this server sends new service request failure response by WAP to user；
(7) this server sends new service request success response by WAP to user, and returns the tool of user's request Internal appearance, this user services request and terminates.
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