KR101641223B1 - Method and system for private network service - Google Patents

Method and system for private network service Download PDF

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Publication number
KR101641223B1
KR101641223B1 KR1020150176145A KR20150176145A KR101641223B1 KR 101641223 B1 KR101641223 B1 KR 101641223B1 KR 1020150176145 A KR1020150176145 A KR 1020150176145A KR 20150176145 A KR20150176145 A KR 20150176145A KR 101641223 B1 KR101641223 B1 KR 101641223B1
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KR
South Korea
Prior art keywords
private
mobile communication
communication terminal
traffic
apn
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KR1020150176145A
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Korean (ko)
Inventor
김세훈
류구현
우상우
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주식회사 케이티
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    • 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
    • H04W28/0205—Traffic management, e.g. flow control or congestion control at the air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/46—Interconnection of networks
    • H04L12/4641—Virtual LANs, VLANs, e.g. virtual private networks [VPN]
    • H04L12/4675—Dynamic sharing of VLAN information amongst network nodes
    • H04L61/3075—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/20—Transfer of user or subscriber data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/06—Interfaces between hierarchically different network devices between gateways and public network devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/04—Interfaces between hierarchically different network devices
    • H04W92/10—Interfaces between hierarchically different network devices between terminal device and access point, i.e. wireless air interface

Abstract

The present invention relates to a method and a system for providing a private network service, which separate traffics of users so as to provide an independent private network service to respective users. According to the present invention, a private network service system comprises: a mobility management entity forming a session between a mobile terminal and a gateway corresponding to an access point name (APN) of the mobile terminal; a private gateway forming a session with the mobile terminal through the mobility management entity, checking a virtual local area network (LAN) number corresponding to the APN included in a traffic when the traffic is generated in the mobile terminal, and transferring the traffic including the virtual LAN number to a switch device; and the switch device connected to a plurality of intranets to manage the traffic of respective intranets, checking a private network access interface corresponding to the virtual LAN number included in the traffic received from the private gateway, and transferring the traffic to the intranet corresponding to the private network access interface among the plurality of intranets.

Description

[0001] METHOD AND SYSTEM FOR PRIVATE NETWORK SERVICE [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a private network service technology, and more particularly, to a private network service providing method and system for providing independent private network services to users by separating traffic of users.

With the development of mobile communication systems today, communication services based on the LTE (Long Term Evolution) communication system, which is the next generation mobile communication technology, are underway. The LTE communication system includes an EPC (Evolved Packet Core) network including an MME (Mobility Management Entity), an S-GW (Serving Gateway) and a P-GW (Packet Data Network Gateway) And the like. The following patent document discloses the PDN-GW of the EPC network.

As the broadband mobile communication market becomes more active and smartphones become more popular, there is a growing demand for broadband mobile communication and smart phones for corporate services.

As a result, there has been a technique for connecting the mobile communication terminal with either a private network or a public network. A conventional private network connection technology connects a mobile communication terminal to a public network or a private network based on an access point name (APN) to which a mobile communication terminal initially connects. That is, in the conventional private network access technology, when the mobile communication terminal is connected using the public APN, the mobile communication terminal is connected to the public network, and when the mobile communication terminal is connected using the private APN, Respectively.

However, in order to provide independent private network services for each company, different APNs must be set for each company, and a gateway, which is an access point of each APN, must be established for each company. That is, in order to establish a private network based on a mobile communication in a corporation, a dedicated APN that can be connected to a private network of the corporation must be allocated, and a dedicated private gateway that plays a key role in a private network must also be separately constructed have.

Korean Patent Registration No. 10-1216542

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the problems of the related art, and it is an object of the present invention to provide a private network service providing method and system capable of saving installation cost and maintenance cost and accessing each other through an intranet using one private network gateway and a switch device The purpose is to provide.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

According to a first aspect of the present invention, there is provided a private network service system comprising: a mobility management entity forming a session between a gateway corresponding to an APN of a mobile communication terminal and the mobile communication terminal; And establishes a session with the mobile communication terminal through the mobility management interface. When a traffic occurs in the mobile communication terminal, the mobile communication terminal checks a virtual LAN number corresponding to the APN included in the traffic, To a switch device; And managing a traffic of each intranet, confirming a private network access interface corresponding to a virtual LAN number included in the traffic received from the private gateway, and transmitting the private LAN access interface corresponding to the private network access interface among the plurality of intranets And a switch device for transmitting the traffic to the intranet.

According to a first aspect of the present invention, there is provided a method for providing a private network service in a system including a plurality of intranets connected to each other, the method comprising: Receiving; Confirming a virtual LAN number included in the traffic and confirming a private network access interface corresponding to the virtual LAN number; And the switch device transmitting traffic of the mobile communication terminal to an intranet corresponding to the private network access interface among the plurality of intranets.

According to the present invention, an intranet independent from each other is constructed for each company (or group) through one private gateway and a switch device, thereby providing a private network service to the companies at a low cost.

In particular, the present invention proposes a system capable of building an independent intranet for a plurality of small-scale enterprises residing in the building using a single private network gateway in the same building (or place) And the like.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and form a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention. And shall not be construed as limited to such matters.
1 is a diagram of a private network service system, in accordance with an embodiment of the present invention.
2 is a diagram illustrating a virtual LAN table according to an embodiment of the present invention.
3 is a diagram illustrating an interface table according to an embodiment of the present invention.
4 is a flowchart illustrating a method of delivering traffic of a mobile communication terminal to an intranet in a private network service system according to an embodiment of the present invention.

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram of a private network service system, in accordance with an embodiment of the present invention.

1, a private network service system includes a mobile communication terminal 110, a Mobility Management Entity (MME) 120, a Home Subscriber Server (HSS) A serving gateway 140, a serving gateway 140, a public PDN gateway 200, a private gateway 140, a public gateway 140, private PDN gateway 410 (hereinafter referred to as "private P-GW"), and a switch device 420.

The mobile communication terminal 110 may be called a communication device that provides or provides voice communication or data communication and may be called by other terms such as User Equipment (UE), Mobile Station (MS), User Terminal (UT), Subscriber Station have. The mobile communication terminal 110 can transmit and receive data using the mobile communication core network 150.

The mobile communication core network 150 includes an Evolved Universal Terrestrial Radio Access Network (E-UTRAN) 151, a Universal Terrestrial Radio Access Network (UTRAN), a GSM EDGE Radio Access Network (GERAN), and a WiFi network. The UE 110 may use a mobile communication network in which an LTE network including the E-UTRAN 151 is interworked. In some cases, the mobile communication terminal 110 may use a mobile communication network in which a WCDMA network including a UTRAN is interworked, or may use GERAN.

The mobile communication terminal 110 can load a private network service related application. In this case, the mobile communication terminal 110 can request an intranet connection by executing the private network service related application. The mobile communication terminal 110 forms an EPS (Evolved Packet System) session with the public P-GW 200 and can access the Internet 300 as a public communication network. The mobile communication terminal 110 forms an EPS session with the private P-GW 410 and selects an authorized intranet 500-N among a plurality of intranets 500-N connected to the private P- .

The MME 120 is a control plane entity in the E-UTRAN 151 and provides mobility management and session management functions of the mobile communication terminal 110 through NAS (Non Access Stratum) signaling. In addition, the MME 120 manages the mobility state of the subscriber. For example, the MME 120 manages which communication network the mobile communication terminal 110 is currently connected to, the idle state, do. In particular, when the mobile communication terminal 100 accesses the MME 120, the subscriber profile of the mobile communication terminal 110 is requested to the HSS 140, and the APN (Access Point Name), and then guiding the mobile communication terminal 110 to be connected to the connection point IP by using the connection point IP (that is, the public PGW IP or the private PGW IP) corresponding to the APN. The MME 120 queries the IP address corresponding to the APN with a DNS server (not shown) to obtain an IP address corresponding to the APN. The APN is an access point to which the mobile communication terminal 110 is connected. The APN is divided into a private APN that can be connected to a private network or a public APN that can be connected to the public network. In the embodiment of the present invention, Or the domain of the public P-GW 200 is used. Further, in the embodiment of the present invention, it is described that the private P-GW 410 uses a plurality of APNs.

The S-GW 130 manages the mobility of the mobile communication terminal 110 between the eNodeB included in the E-UTRAN 151 and other base stations, the 3GPP network, and the EUTRAN. The S- traffic).

The public P-GW 200 connects the mobile communication terminal 110 with a public network such as the Internet 300, provides IP routing and forwarding functions, and provides packet filtering. In addition, the common P-GW 200 allocates the IP address of the mobile communication terminal 110 and performs handover between the S-GWs 130 or between the LTE communication system and a non-3GPP network (for example, WiMax) It operates as a mobility anchor point during handover.

The HSS 140 is a server for storing subscriber information, and stores subscriber profiles by mobile communication terminals 110. The presence or absence of private network service subscription of the mobile communication terminal 110 is recorded in the subscriber profile, and the APN of the mobile communication terminal 110 is recorded. When the mobile communication terminal 110 is subscribed to the private network service, the private APN to which the mobile communication terminal 110 can access is recorded in the subscriber profile. In other words, the APN for the company to which the subscriber belongs is recorded in the subscriber profile, and different APNs are allocated in advance for each enterprise.

The private P-GW 410 is a gateway for connecting the mobile communication terminal 110 to the intranet 500-N, and is connected to the switch device 420 in a wired or wireless manner. The private P-GW 410 is an apparatus corresponding to an access point corresponding to a plurality of private APNs allocated in advance, and may assign a private IP to the mobile communication terminal 110.

The private P-GW 410 stores a virtual LAN table in which an APN and a Virtual Local Area Network Number (hereinafter referred to as 'VLAN number') are mapped.

A virtual LAN (VLAN) is a technique for dividing a specific network into a plurality of logical virtual networks, and a number is assigned to identify each virtual LAN. That is, the VLAN number is identification information for identifying a logically divided virtual LAN.

FIG. 2 is a diagram illustrating a virtual LAN table according to an embodiment of the present invention. As shown in FIG. 2, each APN and a VLAN number are mapped and recorded in a virtual LAN table.

The private P-GW 410 establishes a session with the mobile communication terminal 110 when the mobile communication terminal 110 accesses the mobile communication terminal 110 using the private APN and when a traffic is generated from the mobile communication terminal 110 , Verifies the VLAN number corresponding to the APN of the mobile communication terminal 110 in the virtual LAN table, and transmits the traffic including the VLAN number to the switch device 420.

The switch device 420 divides the entire private network into a certain number of logical intranets 500-N and manages the logical intranet 500-N. The intranet 500-N may be assigned to each company or group. The private P-GW 410 is connected to a plurality of intranets 500-N allocated to each company or organization, and separately manages traffic of each intranet 500-N. The switch 420 is connected to the private P-GW 410 through a trunk port and receives traffic including the VLAN number from the private P-GW 410.

The switch device 420 stores an interface table in which a VLAN number and a private network access interface are mapped.

FIG. 3 is a diagram illustrating an interface table according to an embodiment of the present invention. As shown in FIG. 3, a VLAN number and a private network access interface are mapped and stored in an interface table according to an embodiment of the present invention. In FIG. 3, the VLAN port number is recorded as the information of the private network access interface. However, the VLAN port number is not limited to the VLAN port number.

The private P-GW 410 and the switch device 420 may be installed in a feature building (or place) in order to provide independent private network services for a plurality of companies (or organizations).

4 is a flowchart illustrating a method of delivering traffic of a mobile communication terminal to an intranet in a private network service system according to an embodiment of the present invention.

Referring to FIG. 4, the mobile communication terminal 110 transmits an access request message to the MME 120 (S401). Then, the MME 120 requests the subscriber profile of the mobile communication terminal 110 to the HSS 140 (S403), and the HSS 140 transmits the subscriber profile corresponding to the identification information of the mobile communication terminal 110 And transmits it to the MME 120 (S405). The HSS 140 transmits a subscriber profile in which a private APN is recorded to the MME 120 when the mobile communication terminal 110 is a subscriber to the private network service.

Then, the MME 120 confirms the APN in the subscriber profile of the mobile communication terminal 110 (S407). In the case where the mobile communication terminal 110 is subscribed to the private network service, a private APN (for example, a domain of a private P-GW) is recorded in the subscriber profile, A public APN may be recorded in the subscriber profile. In the embodiment with reference to FIG. 4, it is described that a private APN is recorded in the subscriber profile. In addition, the MME 120 may transmit the APN recorded in the subscriber profile to the mobile communication terminal 110 to include the APN in the traffic transmitted to the private P-GW 410. [

Next, the MME 120 queries the IP address corresponding to the APN with a DNS server (not shown) and transmits the IP address corresponding to the APN (i.e., the IP address of the private P-GW) (S409).

Then, the MME 120 transmits a Create Session Request message to the private P-GW 410 having the IP address obtained from the DNS server (S411). At this time, the MME 120 may transmit the session creation request message to the private P-GW 410 via the S-GW 130.

Then, the private P-GW 410 transmits a Create Session Response message to the MME 120, and the MME 120 forms a browser with the private P-GW 410 (S413) . Then, the MME 120 transmits an access acceptance message (Attach Accept) to the mobile communication terminal 110 when the formation of the antenna is normally completed (S415).

Then, the mobile communication terminal 110 forms an EPS-based session with the private P-GW 410 via the E-UTRAN 151, the MME 120 and the S-GW 130, -GW 410 to generate traffic (S417). The APN recorded in the profile of the mobile communication terminal 110 is recorded in the traffic. That is, the mobile communication terminal 110 can receive the APN recorded in the subscriber profile from the HSS 140 and include the APN in the traffic. In the description with reference to FIG. 4, a private APN is described as being included in the traffic.

Next, when the private P-GW 410 receives the traffic from the mobile communication terminal 110, it checks the APN included in the traffic (S419). Then, the private P-GW 410 confirms the VLAN number corresponding to the confirmed APN in the virtual LAN table (S421), and transmits the VLAN number included in the traffic to the switching device 420 (S423) .

Then, the switch device 420 receives traffic from the private P-GW 410 through the trunk port, and verifies the VLAN number in the received traffic. Then, the switch device 420 confirms the private network access interface corresponding to the verified VLAN number in the interface table (S425). The private network access interface is information required for access to a specific intranet 500-N, and the VLAN port number may be recorded in the private network access interface. 4, interface information (i.e., VLAN port number) of the intranet # 1 500-1 is recorded in the interface table as the private network access interface information mapped with the identification information of the mobile communication terminal 110 .

Then, the switch device 420 delivers the traffic to the intranet # 1 500-1 corresponding to the identified private network access interface among the plurality of intranets 500-N (S427). That is, the switch device 420 transmits the traffic of the mobile communication terminal 110 to the specific intranet 500-N corresponding to the private network access interface corresponding to the VLAN number among the plurality of intranets 500-N .

As described above, in the private network service system according to the embodiment of the present invention, intranet 500-N independent from each other is connected to each company (or group) through one private P-GW 410 and switch device 410, To provide private network services to those companies at a low cost.

While the specification contains many features, such features should not be construed as limiting the scope of the invention or the scope of the claims. In addition, the features described in the individual embodiments herein may be combined and implemented in a single embodiment. Conversely, various features described in the singular < Desc / Clms Page number 5 > embodiments herein may be implemented in various embodiments individually or in combination as appropriate.

Although the operations have been described in a particular order in the figures, it should be understood that such operations are performed in a particular order as shown, or that all described operations are performed to obtain a sequence of sequential orders, or a desired result . In certain circumstances, multitasking and parallel processing may be advantageous. It should also be understood that the division of various system components in the above embodiments does not require such distinction in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

The method of the present invention as described above can be implemented by a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto optical disk, etc.). Such a process can be easily carried out by those skilled in the art and will not be described in detail.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

110: mobile communication terminal 120: MME
130: S-GW 140: HSS
150: mobile communication core network 151: E-UTRAN
200: Public P-GW 300: Internet
410: Private P-GW 420: Switch device

Claims (10)

A mobility management entity that forms a session between a gateway corresponding to an APN of the mobile communication terminal and the mobile communication terminal;
And establishes a session with the mobile communication terminal through the mobility management interface. When a traffic occurs in the mobile communication terminal, the mobile communication terminal checks a virtual LAN number corresponding to the APN included in the traffic, To a switch device; And
A plurality of intranets for managing traffic of each intranet, confirming a private network access interface corresponding to a virtual LAN number included in the traffic received from the private gateway, and transmitting, from a plurality of intranets, an intranet corresponding to the private network access interface And a switch device for transmitting the traffic to the private network service system. The method according to claim 1,
And a home subscriber server for storing a profile for each mobile communication terminal,
The mobility management entity comprising:
Obtains a profile of the mobile communication terminal from the home subscriber server, identifies an APN recorded in the profile, and forms a session with the private gateway when the APN is a private APN. 3. The method of claim 2,
The mobility management entity comprising:
Wherein when the subscriber is subscribed to the private network service of the mobile communication terminal, the private APN receives the profile recorded with the private APN from the home subscriber server. 4. The method according to any one of claims 1 to 3,
The switch device includes:
Wherein the virtual LAN port number is identified as the private network access interface and the traffic of the mobile communication terminal is transmitted to the intranet corresponding to the virtual LAN port number among the plurality of intranets. 4. The method according to any one of claims 1 to 3,
The switch device includes:
And is connected to the private gateway through a trunk port. A method for providing a private network service in a system including a switch device connected to a plurality of intranets,
The switch device receiving traffic of a mobile communication terminal from a private gateway;
Confirming a virtual LAN number included in the traffic and confirming a private network access interface corresponding to the virtual LAN number; And
And the switch device transmitting traffic of the mobile communication terminal to an intranet corresponding to the private network access interface among the plurality of intranets. The method according to claim 6,
Wherein the receiving the traffic comprises:
Wherein the switch device receives the traffic including the virtual LAN number corresponding to the APN of the mobile communication terminal from the private gateway. 8. The method of claim 7,
And the virtual LAN number is included in the traffic in the private gateway. 9. The method according to any one of claims 6 to 8,
Prior to the step of receiving the traffic,
The mobility management entity obtaining a profile of the mobile communication terminal from a home subscriber server;
The mobility management entity identifying a private APN recorded in the profile and forming a session between the private gateway and the mobile communication terminal corresponding to the private APN; And
Further comprising: receiving, by the private gateway, traffic of the mobile communication terminal including the private APN. 10. The method of claim 9,
Wherein the acquiring comprises:
Wherein the mobility management entity acquires a profile in which the private APN is recorded from the home subscriber server when the mobility management entity is subscribed to the private network service of the mobile communication terminal.
KR1020150176145A 2015-07-17 2015-12-10 Method and system for private network service KR101641223B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010057104A (en) * 1999-12-18 2001-07-04 이계철 Internet VPN service provisioning method using service gateway
KR20030042721A (en) * 2001-11-23 2003-06-02 삼성전자주식회사 Service apparatus and method for public mobile communication network, and private wire and mobile communication network
KR101216542B1 (en) 2011-08-31 2013-01-02 에스케이텔레콤 주식회사 Pdn-gw for epc network and method generation of charging data therefor
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