KR20180005552A - System for providing multinet aggregation transmission service based on zone and method thereof - Google Patents

Abstract

An exclusive multi-network service providing system and a method thereof are provided. The exclusive multi-network service providing system includes an exclusive multi-network aggregation transmission device which aggregates uplink data received, respectively, through a first sub-flow connected to a terminal located in an exclusive network service area through a first network and a second sub-flow connected to the terminal through a second network, transmits the aggregated data to a destination server through an exclusive network, divides downlink data received through the exclusive network, and transmits the divided data to the terminal through each of the first sub-flow and the second sub-flow, and an exclusive packet data network gateway for forming a communication session between the terminal and the exclusive network by receiving a connection request from the terminal. Accordingly, the present invention can prevent traffic from being concentrated on one network.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a system and a method for providing a zone-based multi-

The present invention relates to a system and method for providing a zone-based multi-network merging transmission service.

As automation technology for convenient life is developed, zone based service which provides various services automatically when a user enters a specific zone is getting more and more popular.

In particular, there is an increasing demand to provide specialized services only for users located within a company or within a certain area or in a local government by establishing a dedicated network for a company or a specific area (or zone) or a municipality. Zone-based wireless network services are being provided to meet these needs.

Conventionally, a zone-based wireless network service is implemented by a single wireless network service, for example, a zone-based LTE (Long Term Evolution) service or a WiFi Zone service. However, there is a problem of speed and resource allocation issues when providing a single wireless network service.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a system and method for providing a heterogeneous multi-network merging transmission service in a wireless network service based on a specific area or zone, for example, an intranet.

According to an aspect of the present invention, a dedicated multi-network service providing system includes a first sub-flow connected to a terminal located in a private network service area through a first network, and a second sub- And transmits the downlink data received through the dedicated network to the terminal through the first sub-flow and the second sub-flow, respectively, And a dedicated packet data network gateway interworking with the dedicated network and the dedicated multi-network merging transmission apparatus, receiving a connection request from the terminal, and forming a communication session between the terminal and the dedicated network.

The dedicated multi-network service providing system, when receiving a connection request including a dedicated APN (Access Point Name) from the terminal through the base station of the first network, requests a session to the dedicated packet data network gateway, And a public serving gateway for requesting a session to the public packet data network gateway upon receiving the connection request which is not received.

Wherein the dedicated packet data network gateway comprises:

It can determine whether the terminal that transmitted the connection request is a dedicated network service subscriber and can create the communication session if it is a dedicated network service subscriber.

The public-

And can receive a connection request including the dedicated APN according to the occurrence of the APN switching event of the terminal.

The APN switching event includes:

At least one of a user selection through a specific application executed in the terminal, a reception of a base station identifier of the first network by the terminal, and a reception of a service set identifier (SSID) of the second network by the terminal .

The APN switching event includes:

When the mobile terminal enters the dedicated network service area while using the multi-network merging service in the public network service area, it can be automatically generated at the mobile terminal.

The APN switching event includes:

And may be automatically generated at the terminal when the service is provided through the first network or through the second network in the public network service area and then enters the dedicated network service area.

The dedicated multi-network service providing system includes an interface interworking with the dedicated multi-network merging transmission apparatus, and includes a dedicated authentication server for authenticating whether to provide a dedicated multi-network merging transmission through the dedicated multi-network merging transmission apparatus to the terminal, And a dedicated domain name server connected to the dedicated network and responsive to the IP address of the dedicated authentication server to the terminal when receiving the domain name server query from the terminal.

The dedicated multi-network service providing system may further include a dedicated access point directly connected to the dedicated network and connecting the terminal to the second sub-flow.

A dedicated multi-network service providing system includes a public access point connected to the multi-network merging transmission apparatus via an Internet network, a public access point to which the terminal and the second sub-flow are connected, and a public access point connected between the public access point and the multi- And a firewall for limiting traffic transmitted and received through the second subflow to authenticated traffic.

The first network may be a mobile communication network, and the second network may be a local area network.

According to another aspect of the present invention, a dedicated multi-network service providing system includes a first sub-flow connected through a first network with a terminal located in a dedicated network service area, and a second sub- And transmits the data to the destination server through a dedicated network by dividing downlink data received through the dedicated network and transmitting the divided data to the terminal through the first sub-flow and the second sub- A dedicated packet data network gateway for receiving a connection request from the terminal and forming a communication session between the terminal and the dedicated network, the terminal being connected to the first sub-flow, Upon receiving a connection request from the terminal to the dedicated network through the dedicated packet data It includes only the serving gateway to request a session generated by the network gateway.

The dedicated serving gateway,

And may receive a connection request including a dedicated APN (Access Point Name) from the terminal through the base station of the first network according to the occurrence of the APN switching event of the terminal.

The base station of the first network includes:

A public mobility management entity or a dedicated mobility management entity in cooperation with the dedicated serving gateway,

The dedicated serving gateway,

Wherein the private packet data network gateway and the public packet data network gateway are interfaced with the private packet data network gateway and the public packet data network gateway, respectively, and the interworking with the public mobility management entity or the dedicated mobility management entity, And requests a session to the public packet data network gateway when the terminal is not a dedicated network service subscriber.

Wherein the dedicated multi-network service providing system includes an interface interworking with the dedicated multi-network merging transmission apparatus, and authenticates whether or not to provide dedicated multi-network merging transmission through the dedicated multi-network merging transmission apparatus to the terminal. And a dedicated domain name server connected to the dedicated network and responsive to the IP address of the dedicated authentication server to the terminal when receiving the domain name server query from the terminal.

The dedicated multi-network service providing system may further include a dedicated access point directly connected to the dedicated network and connecting the terminal to the second sub-flow.

A dedicated multi-network service providing system includes a public access point connected to the multi-network merging transmission apparatus via an Internet network, a public access point to which the terminal and the second sub-flow are connected, and a public access point connected between the public access point and the multi- And a firewall for limiting traffic transmitted and received through the second subflow to authenticated traffic.

According to another aspect of the present invention, there is provided a method for providing a dedicated multi-network service in a terminal, the method comprising: providing a dedicated multi-network transmission service in which the terminal enters a dedicated network service area, Connecting the first sub-flow through the second sub-flow and connecting the second sub-flow via the second network, transmitting the uplink data to the dedicated multi-network merging transmission apparatus through the first sub-flow and the second sub- Receiving and processing downlink data from the dedicated multi-network merging transmission apparatus through the first sub-flow and the second sub-flow, respectively,

The dedicated multi-network merge transmission apparatus merges the uplink data and transmits the merged downlink data to the destination server through the dedicated network, and transmits the downlink data to the terminal.

Before the connecting step,

Further comprising the step of the terminal transmitting a connection request including the dedicated APN to a public serving gateway connected to the base station of the first network when a switching event to a dedicated APN (Access Point Name) occurs,

The connection request may include:

To the dedicated packet data network gateway connected to the dedicated network and the dedicated multi-network merging transmission apparatus.

Before the connecting step,

Further comprising the step of the terminal transmitting a connection request including the dedicated APN to a dedicated serving gateway connected to the base station of the first network when a switching event to a dedicated APN (Access Point Name) occurs,

The connection request may include:

To the dedicated packet data network gateway connected to the dedicated network and the dedicated multi-network merging transmission apparatus.

Wherein the connecting step comprises:

Connecting the first sub-flow through a dedicated packet data network gateway of the first network, and connecting the second sub-flow with a dedicated access point directly connected to the dedicated network.

Wherein the connecting step comprises:

Connecting the first sub-flow through a dedicated packet data network gateway of the first network, and connecting to the dedicated multiplexing transmission apparatus through an Internet network, And connecting the access point and the second sub-flow,

A firewall may be located between the public access point and the MSS to restrict traffic transmitted and received through the second subflow to authenticated traffic.

Before the connecting step,

Accessing a dedicated domain name server to obtain an address of a dedicated authentication server when the terminal enters the zone and the domain name server query period has expired, accessing the address of the dedicated authentication server, And acquiring information of the merging transmission apparatus.

Before the connecting step,

When the terminal enters the zone, accesses the dedicated packet data network gateway of the first network to change a dedicated domain name server address previously stored to the detected address when a change in the address of the dedicated domain name server is detected, Address to obtain the address of the dedicated authentication server, and accessing the address of the dedicated authentication server to obtain the information of the MSS.

Before the connecting step,

When the terminal enters a zone, accessing a dedicated packet data network gateway of the first network and resetting a domain name server query period if an address change of a dedicated domain name server is detected, accessing a dedicated domain name server Acquiring the address of the dedicated authentication server, and acquiring the information of the dedicated multiplexing transmission apparatus by accessing the address of the dedicated authentication server.

According to an embodiment of the present invention, by providing a heterogeneous multi-network merging transmission based on a specific area (or zone) based or private intranet, the problem of speed and resource division due to the provision of a conventional single network (LTE or WiFi) The problem of concentration of traffic can be solved.

FIG. 1 is a conceptual diagram illustrating a multiplexing transmission according to an embodiment of the present invention. Referring to FIG.
2 is a diagram illustrating a configuration of a multi-network merging system according to an embodiment of the present invention.
FIG. 3 is a view for explaining multiplexing transmission according to an embodiment of the present invention. Referring to FIG.
4 is a block diagram of a zone-based multi-network merging transmission system according to an embodiment of the present invention.
FIG. 5 is a block diagram of a zone-based multi-network merging transmission system according to another embodiment of the present invention.
6 is a configuration diagram of a zone-based multi-network merging transmission system according to another embodiment of the present invention.
FIG. 7 is a block diagram of a zone-based multi-network merging transmission system according to another embodiment of the present invention.
FIG. 8 is a block diagram of a zone-based multi-network merge transmission system according to another embodiment of the present invention.
9 is a flowchart illustrating a multi-network merge transmission service procedure according to an embodiment of the present invention.
10 is a flowchart illustrating a network connection procedure according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention, parts not related to the description are omitted, and like parts are denoted by similar reference numerals throughout the specification

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. Also, the terms " part, "" module," and " module ", etc. in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software have.

A mobile station (MS), a mobile terminal (MT), a subscriber station (SS), a portable subscriber station (PSS), a user equipment (UE) , An access terminal (AT), and the like, and may include all or some of functions of a mobile station, a mobile terminal, a subscriber station, a mobile subscriber station, a user equipment, an access terminal, and the like.

The terminal of the present disclosure includes a base station (BS), an access point (AP), a radio access station (RAS), a node B, an evolved NodeB (eNodeB) And may be connected to a remote server by connecting to a network device such as a Base Transceiver Station (BTS), a Mobile Multihop Relay (MMR) -BS, or the like.

The terminal of the present specification may be a mobile terminal such as a smart phone, a tablet terminal such as a smart pad and a tablet PC, a communication terminal such as a computer and a television, and may have a plurality of communication interfaces.

The communication interface may vary. For example, the communication interface may include a short-range wireless network interface such as WiFi / WLAN / Bluetooth and a mobile communication network interface such as 3G / Long Term Evolution (LTE) / Long Term Evolution-Advanced And the terminal manufacturer may add various communication interfaces. In this specification, the WiFi interface and the 3G / LTE interface are described as an example, but the communication interface is not limited thereto.

FIG. 1 is a conceptual diagram illustrating a multi-network merging transmission according to an embodiment of the present invention, FIG. 2 is a diagram illustrating a configuration of a multi-network merging system according to an embodiment of the present invention, FIG. 2 is a diagram illustrating a multi-network merging transmission according to an embodiment of the present invention.

Referring to FIG. 1, MultiNet Aggregation transmission is a technique for transmitting data by merging a plurality of communication networks. The multi-network aggregation transmission method divides transmission data into paths of a plurality of identical or plural heterogeneous networks, Data transmitted through a plurality of paths can be bundled and transmitted. Multi-network merging transmission may be referred to as multi-path transmission in the sense of simultaneously transmitting data to a plurality of paths.

According to one embodiment, the multiple communication interface terminal 10 divides original data 1, 2, 3, 4 and 5 to transmit some data 2 and 3 to the first network, And transmits data (1, 4, 5).

The multiplexing and merging transmission apparatus 20 merges the partial data 2 and 3 received from the first network and the remaining data 1 and 4 and 5 received from the second network and transmits them to the contents server 30. 3, 4, and 5 received from the content server 30 into a part of data 2 and 3 and the remaining data 1, 4, and 5, and transmits the divided data to the respective networks.

The multiple communication interface terminal 10 merges the data (2, 3) received in the first network and the data (1, 4, 5) received in the second network in order of the original data 1, , 4, 5).

At this time, the first network may include an LTE / 3G network and the second network may include a WiFi network.

2, the multi-network merging system includes a terminal 10, a multi-network merging transmission apparatus 20 connected to the terminal 101 via a plurality of networks, a content server 30, an authentication server 40, And a Domain Name Server (DNS) 50.

The terminal 10 has multiple communication interfaces and can be connected to a plurality of networks at one time via multiple communication interfaces. The terminal 10 may be equipped with a management application which can be accessed and set up or managed by a multi-network connection.

The terminal 10 includes a network agent that performs authentication, state management, and traffic processing for merging multiple networks, and the network agent can be implemented as internal logic of the terminal. In the terminal 10, a network agent and various applications communicate with each other through a socket. The network agent works with the multi-network merging transmission apparatus 20 according to the setting information of the management application for network management.

The multi-network merging and transmitting apparatus 20 merges the sub-flows transmitted through the multi-paths or transmits the multi-path sub-flows by dividing the flows transmitted through the single path into the multi-path sub-flows. The multi-network merging and transmitting apparatus 20 is located at a contact point of the multi-network, for example, at a contact point between an LTE network and a WiFi network. The multi-network merging and transmitting apparatus 20 may be referred to as a MultiNet Aggregation-Gateway (MA-GW).

The multi-network merge transmission apparatus 20 divides the data to transmit the received data to the terminal 10. Then, the multi-network merging transmission apparatus 20 transmits some data to the terminal 10 through the first sub-flow of the first network (e.g., LTE network) and transmits the remaining data to the second network (e.g., WiFi network) to the terminal 10 through the second sub-flow. The terminal 10 merges data received through a plurality of communication interfaces. Similarly, the multi-network merge transmission apparatus 20 may merge the data transmitted by the terminal 10 using the multiple communication interfaces and transmit the merged data to the content server 30.

The authentication server 40 determines whether the terminal 101 is in a state where the multiplexing service is available and authenticates the terminal. The authentication server 40 notifies the terminal 10 of the access information (IP address, port value, etc.) of the multiplexing / merging transmission apparatus 20 so that the authenticated terminal 10 can access the multiplexing / to provide.

The authentication server 40 periodically checks the authentication status of the terminal 10 and notifies the terminal 10 of the authentication status. If the terminal 10 is in a state where the multiplexing service is not available, the authentication server 40 transmits the authentication state and the notification information to the terminal. Here, the authentication server 40 may be referred to as a MultiNet Aggregation-Policy Engine MA-PE.

The DNS 50 receives a DNS Query Request message requesting the address of the authentication server 40 from the terminal 10. Then, the terminal 10 transmits a DNS Query Response message including the address of the authentication server 40 to the terminal 10. The DNS query response message may include a plurality of authentication server 40 addresses, and may include, for example, an IPv4 address or an IPv6 address.

The terminal 10 transmits a multi-network merging service activation request message (MA Service Activation Request) to the address of the authentication server 40 included in the DNS query response message.

The multi-network merging technique can be classified as follows according to the merging point.

L2 / link layer merging creates a dedicated tunnel to the WiFi AP at the boundary between the LTE core and the access network (ie, the eNB).

L3 / network layer merging creates virtual IP tunnels to integrate IP addresses independently used in LTE and WiFi networks.

L4 / transport layer merging can create a session over a single access network and then participate in data transmission regardless of the IP address scheme, if additional access networks are available. At this time, the application-level communication entity supports a structure capable of single-session-based data communication using one or more access networks.

L7 / Application layer merge reassembles data received by dedicated application / network agent through LTE network and WiFi network or transmits application protocol data separately.

In this way, it is possible to perform various merge transmissions according to the merge transport layer. In the following, merge technology using L4-based multipath TCP (MPTCP) will be described as an example.

Referring to FIG. 3, the multi-network merge transmission apparatus 20 relays MPTCP data and TCP data. The multi-network merging and transmitting apparatus 20 may be a proxy server supporting transparent CP support when the terminal 10 communicates with a general TCP server through MPTCP. Here, it is assumed that the content server 30 does not support multiple communication interfaces.

The terminal 10 and the multiplexing / multiplexing transmission apparatus 20 are connected to each other through a main path (a 3G / LTE network) ) And a secondary subflow (Secondary subflow) generated in each of the sub-paths (WiFi network) and the sub-path (WiFi network).

In a case where the multi-network merging service is not available in the terminal 10 (for example, when the multi-network merging service is disabled or the service provided by the content server 30 is set not to use multi-network merging transmission) The terminal 10 communicates with the content server 30 via a default route without having to go through the multiplexing network 20. The default path is a basic data transmission / reception path that does not connect to the multi-network merging transmission apparatus 20. In a WiFi connection, the default path is a WiFi network. If WiFi is not connected, the default path is 3G / have.

Now, an embodiment for implementing the above-described multi-network merging transmission service on a zone basis will be described.

Here, the zone may be a private network service area such as a business institution that has a feeling of refusal to the external exposure of internal data. In addition, the zone may be set as a specific area in which the service coverage of the base station (hereinafter eNodeB) and the signal transmission area of the access point (hereinafter, AP) overlap with each other.

Then, the configuration of the zone-based multi-network merging transmission system will be described according to the embodiments.

FIG. 4 is a configuration diagram of a zone-based multi-network merging transmission system according to an embodiment of the present invention, FIG. 5 is a configuration diagram of a zone-based multi-network merging transmission system according to another embodiment of the present invention, FIG. 7 is a block diagram of a zone-based multi-network merge transmission system according to another embodiment of the present invention, and FIG. 8 Is a configuration diagram of a zone-based multi-network merging transmission system according to another embodiment of the present invention.

Here, the same components are denoted by the same reference numerals.

4, 5, and 6 correspond to the first embodiment in which a packet data network (PDN) gateway (hereinafter, referred to as P-GW) is implemented by a dedicated P-GW. 7 and 8 correspond to a second embodiment in which a dedicated P-GW and a dedicated Serving Gateway (S-GW) are implemented.

4, 5 and 6, the S-GW is implemented only as a common S-GW and the P-GW is implemented as a separate P-GW and a dedicated P-GW.

7 and 8, the S-GW is implemented as a common S-GW and the dedicated S-GW, and the P-GW is implemented separately as a common P-GW and a dedicated P-GW.

At this time, the dedicated S-GW and dedicated P-GW are gateway configurations for connecting the terminal 101 to the intranet 115.

First, referring to FIG. 4, the UE 101 has a function of using a Multinet Aggregation service. When the UE 101 enters the zone, it connects with the eNodeB 103 providing the zone as a service coverage through the first network. And connects to the dedicated AP 105 installed in the zone through the second network.

The UE 101 may be referred to as an MA-UE (Multinet Aggregation-User Equipment). The terminal 101 may generate a subflow in a plurality of networks, the first network may be a mobile communication network, and the second network may be a short-range wireless communication network. Hereinafter, the first network is a 3G / LTE network and the second network is a WiFI network.

The LTE network includes a base station (eNB) 103 to which the MA-UE 101 is connected, and an evolved packet core (EPC) which is a network core.

The EPC includes a Mobility Management Entity (MME), an S-GW, and a P-GW. Here, general functions and operations of the constituent elements constituting the EPC will be briefly described as follows.

The MME is a control plane entity in Evolved Universal Terrestrial Radio Access Network (E-UTRAN), and can provide mobility management and session management functions for the terminal 101 through NAS (Non Access Stratum) signaling have.

The S-GW can manage the mobility of the UE 101 between the base stations included in the E-UTRAN, and between the 3GPP network and the EUTRAN. In addition, a session control function for processing payload traffic according to a set session can be performed. That is, the S-GW can operate as an anchor point when inter-base station handover and inter-3GPP inter-system handover are performed.

The P-GW connects the terminal 101 to a public network such as the Internet N1, can provide IP routing and forwarding functions, can provide packet filtering, assigns an IP address of the terminal 101, And can operate as a mobility anchor point during handover between the S-GWs or during handover between the LTE communication system and a non-3GPP network (for example, WiMAX, etc.).

At this time, the EPC is divided into a public EPC and a dedicated EPC providing a zone service. However, since the common EPC and the dedicated EPC share a common S-GW, the EPC is not shown separately. Dedicated EPCs can provide enterprise-specific intranet services on a zone basis.

The eNodeB 103 located in the zone is connected to the public MME 107 and the public S-GW 109.

The common S-GW 109 is connected to the public MME 107, the public P-GW 111, and the dedicated P-GW 113.

The dedicated P-GW 113 is connected to the intranet 115, the dedicated MA-GW 117, the dedicated MA-PE 119 and the content server 121. The dedicated MA-GW 117 is connected to the dedicated DNS 123.

At this time, the intranet 115 is directly connected to the dedicated AP 105 located in the zone. The dedicated AP 105 may be a WiFi (Wi-Fi) AP.

The public P-GW 111 is connected to the public MA-GW 125, the public MA-PE 127 and the public DNS 129.

Here, the dedicated MA-GW 117 and the common MA-GW 125 refer to the multiplexing transmission apparatus 20 described with reference to FIG. 1 to FIG. The dedicated MA-PE 119 and the public MA-PE 127 are devices that perform service authentication through interworking with the authentication server 40 or the authentication server 40.

When a session is established through the public P-GW 125 in the area outside the zone and the terminal 101 connected to the common MA-GW 125 and using the multiplexing service enters the zone, a dedicated P-GW Lt; RTI ID = 0.0 > 113 < / RTI > And is connected to the dedicated MA-GW 117 to receive the zone-based multiplexing service.

When the dedicated APN switching event occurs, the UE 101 transmits a connection request including the dedicated APN to the eNodeB 103. [ It is also possible to switch the network connection by a network-initiated trigger (APN-OI: Access Point Name-Operator Identifier (APN), etc.) in addition to the terminal-driven trigger (APN switching).

There may be various embodiments of dedicated APN switching events.

According to one embodiment, a dedicated APN switching event may occur according to user selection through a specific application executed in the terminal 101. [

According to another embodiment of the present invention, it is possible to generate a service set identifier (SSID) of the second network of the terminal 101 by receiving at least one of the base station identifier of the first network of the terminal 101 and the service set identifier have. That is, the mobile terminal enters a zone and receives a cell ID broadcast by the eNodeB 103, and a dedicated APN switching event may occur if the received cell ID is a zone service area. Also, if the SSID of the connected AP is included in the zone service area list, a dedicated APN switching event may occur.

At this time, the cell ID corresponding to the zone service area and the SSID included in the zone service area list may be held by the terminal 101 in advance.

According to another embodiment, when the terminal 101 enters the dedicated network service area while using the multi-network merging service in the public network service area, the terminal 101 can automatically occur. Here, whether to enter the dedicated network service area can be known through the base station identifier or the SSID as described above.

According to another embodiment, when a service through the first network or a service through the second network is used in the public network service area and then enters the private network service area, the terminal 101 may automatically occur. Here, whether to enter the dedicated network service area can be known through the base station identifier or the SSID as described above.

The public S-GW 109, when receiving a connection request including a dedicated APN from the terminal 101, transmits a connection request to the dedicated P-GW 113. When the connection request including the public APN is received, the connection request is transmitted to the public P-GW 111. [

The dedicated P-GW 113 may be a gateway for connecting the terminal 101 to the intranet 115. And establishes a communication session with the terminal 101 to permit access to the intranet N2 when the terminal 101 is connected using the dedicated APN.

When the access request including the dedicated APN is received, the dedicated P-GW 113 determines whether the corresponding terminal 101 is a dedicated network service subscriber permitted to access the intranet 115. At this time, it can be confirmed by interlocking with the dedicated service authentication equipment (30, 119). If the subscriber is a dedicated network service subscriber, a communication session is established between the terminal 101 and the intranet 115. And assigns an IP address commonly used in the dedicated network to the terminal 101. However, if it is not a subscriber to the dedicated network service, it can reply to the terminal 101 that the session creation has failed.

At this time, in the embodiment of the present invention, when providing a zone-based dedicated network service, a multi-merge network transmission service is provided.

The multi - merge network transmission service may be applied collectively to users of the zone - based dedicated network service, or may be subject to user selection.

The terminal 101 has an interface connected to a plurality of networks (for example, an LTE network and a WiFi network).

The dedicated MA-GW 117 includes interfaces for interworking with the dedicated P-GW 113 and the intranet 115, respectively. The dedicated MA-GW 117 has a first sub-flow connected to the terminal 101 located in a dedicated network service area, i.e., a zone, through a first network, and a second sub- And transmits the merged upstream data to the destination server 121 through the intranet 115. [ Then, the downlink data received through the intranet 115 is divided and transmitted to the terminal 101 through the first sub-flow and the second sub-flow.

The dedicated MA-GW 117 is disposed at the rear end of the dedicated P-GW 113 and the dedicated AP 105, and is configured on the intranet 115. And it can be linked with Policy and Charging Rules Function (PCRF) for separate billing (eg subtraction of LTE usage).

The dedicated MA-PE 119 includes an interface for interworking with the dedicated MA-GW 117 and authenticates whether or not to provide a dedicated multi-network merging transmission via the dedicated MA-GW 117 to the terminal 101. [ In this case, the policy for providing the multi-merge network transmission service can be applied to the dedicated network service subscribers. Or may be applied only to users selected according to user information to provide a multi-merge network transmission service, for example, terminal information. In addition, the multi-merge network transmission service policy may be a policy applied according to a user selection or a policy applied by a system operator in batch. The dedicated MA-PE 119 provides the IP address of the dedicated MA-GW 117 to the dedicated network service subscriber for dedicated multiplexing transmission.

The dedicated DNS 123 is connected to the intranet 115 and upon receiving the DNS query from the terminal 101, replies the IP address of the dedicated MA-PE 119 to the terminal 101.

On the other hand, the dedicated AP 105 installed in the zone is directly connected to the intranet 115, and the terminal 101 and the second sub-flow are connected.

Here, the dedicated AP 105 includes a terminal 101 (a mobile phone, a smart phone, a PMP, a smart pad, a smart book, a tablet PC, a smart phone, etc.) installed in a predetermined area (zone) (WiFi) -based wireless data service to a wireless terminal (e.g., a communication terminal of a mobile phone, a netbook, a notebook computer, etc.).

According to the above-described configuration, in the case of LTE traffic, it is transmitted and received through path 1 (terminal-eNodeB-public S-GW-dedicated P-GW-dedicated MA-GW-intranet). In case of WiFi traffic, it is transmitted and received through path 2 (terminal-dedicated AP - dedicated MA-GW - intranet).

In this case, in the case of multi-network merging transmission traffic, the uplink traffic is distributed to LTE and WiFi. At this time, LTE distributed traffic is transmitted on route 1, and WiFi distributed traffic is transmitted on route 2. Then, the dedicated MA-GW 117 merges the distributed traffic received through paths 1 and 2, respectively, and transmits the combined traffic to the intranet 115.

In the case of downlink traffic, the dedicated MA-GW 117 distributes downlink traffic received from the intranet 115 to LTE and WiFi, respectively, and transmits the downlink traffic to the terminal 101. That is, some of the distributed traffic is transmitted through path 1 and the rest is transmitted through path 2.

The zone-based multi-network merging transmission service according to the embodiment of the present invention becomes possible when the UE 101 enters the zone and accesses the eNodeB 103 and the dedicated AP 105. [

The user manually or automatically sets a dedicated APN in the terminal 101 in order to use the zone-based multi-network merging transmission service. The terminal 101 connected to the intranet 115 via the dedicated P-GW 113 as an APN change or network-based event acquires the address of the dedicated MA-PE 119 through the dedicated DNS 123, 101 obtains the IP address of the dedicated MA-GW 117 from the dedicated MA-PE 119 and then uses the multiplexed network merging transmission service through the dedicated MA-GW 119. At this time, the LTE traffic is transmitted / received through the dedicated P-GW 113, and in the case of the dedicated AP 105, the WiFi traffic is transmitted / received to / from the terminal through the intranet 115.

A public AP may be used instead of the dedicated AP 105, as shown in FIG. Referring to FIG. 5, description of the same components as those in FIG. 4 will be omitted, and only modified configurations will be described.

The public AP 131 is connected to the Internet 133. A firewall 133 is disposed between the intranet 115 and the Internet 133. That is, the firewall 133 is disposed on the WiFi traffic path in front of the dedicated MA-GW 117. The firewall 133 is located between the public AP 131 and the dedicated MA-GW 117 and serves to limit traffic transmitted and received through the second sub-flow to authenticated traffic.

6 shows an example of a case where the UE 101 is connected to the public AP 131 and enters a zone using a multiplexing transmission service through a sub-flow connected to the common MA-GW 125, As shown in FIG.

In addition, although not shown, when the public AP 131 provides a public service, for example, an LTE service or a WiFi access service, and is connected to the dedicated AP 105, the multiplexing wireless network transfer service can be automatically activated .

However, the P-GW 113 may be implemented to include the dedicated S-GW 133 and the dedicated P-GW 113 as shown in FIG. 7 and FIG.

Referring to FIG. 7, the dedicated S-GW 133 includes interfaces that cooperate with the public P-GW 111 and the dedicated P-GW 113, respectively.

At this time, an interface for interfacing with the dedicated MME 135 may be further included.

When the dedicated S-GW 133 receives a connection request including the dedicated APN from the terminal 101, the dedicated S-GW 133 requests the dedicated P-GW 113 to create a session.

When the dedicated S-GW 133 receives a connection request including the public APN from the terminal 101, the dedicated S-GW 133 requests the common P-GW 111 to create a session.

That is, according to the APN, the general subscriber is provided with the LTE service or the multiplexing transmission service through the dedicated P-GW 111 in the dedicated S-GW 133. Also, the dedicated service subscriber is provided with the multiplexing transmission service through the dedicated S-GW 133 and the dedicated P-GW 113.

At this time, as shown in FIG. 7, the dedicated MME 135 may be implemented separately from the common MME 107, or only the common MME 107 may be implemented as shown in FIG.

7, if there is a dedicated MME 135, it manages the management functions of all the terminals 101 that have entered the zone, and the dedicated service subscriber manages the dedicated P-GW 113 ), And a general subscriber processes access to the common P-GW 111 via the dedicated S-GW 133. [

At this time, if the dedicated service subscriber, the dedicated S-GW 133 transmits a connection request including information indicating the dedicated service subscriber.

The dedicated S-GW 133 transmits a connection request including the dedicated service subscriber information and the dedicated APN to the dedicated P-GW 113.

On the other hand, if the subscriber is a general subscriber rather than a dedicated service subscriber, a connection request including information indicating a general subscriber is transmitted to the dedicated S-GW 133.

If the exclusive APN is included but is not a dedicated service subscriber, the dedicated S-GW 133 transmits a connection request to the common P-GW 113.

When the APN classification function is applied to the eNodeB 103, the eNodeB 103 provides the information of the terminal 101 to the dedicated MME 135 when a connection request including the dedicated APN is received, When the access request including the APN is received, the information of the terminal 101 can be provided to the public MME 107.

8, when receiving a connection request including a dedicated APN, the eNodeB 103 provides the information of the terminal 101 to the public MME 107 to inquire whether the terminal 101 is a dedicated service subscriber, . The subsequent procedure is the same as in Fig.

Meanwhile, the terminal 101 receives and knows the IP address of the MA-PE from the DNS. However, the DNS query is not performed again before expiration of the TTL (Time To Live) of the IP address obtained from the DNS. If the TTL is moved to the zone before expiration of the TTL, the UE 101 may not receive the zone service by requesting authentication from the known MA-PE 127, rather than the dedicated MA-PE 119 . Therefore, in order to prevent such a problem, it is possible to operate according to the three embodiments as shown in Table 1 below.

measures Applies to Implementation plan Network configuration Operation procedure I. Change MA-PE URI * GL terminal
Client
* Dedicated DNS * Mass and exclusive MA-PE URI are installed separately in the terminal
* Setting dedicated MA-PE address in dedicated DNS * Terminal client ~ dedicated P-GW ~ dedicated DNS ~ dedicated MA-PE * MA-PE URI is automatically changed in the terminal client when the DNS server address is changed on the PCO IE when connecting to the dedicated P-GW
* Terminal performs dedicated MA-PE DNS Query procedure with dedicated DNS to obtain dedicated MA-PE IP address
Here, the PCO IE is an optional field defined in the 3GPP message II. DNS Query II-1. DNS * DNS for LTE Mass
* Dedicated DNS * Minimal adjustment of MA-PE TTL value for DNS and dedicated DNS for LTE Mass
* Setting dedicated MA-PE address in dedicated DNS * Terminal Client ~ DNS for LTE Mass ~ Dedicated DNS ~ Dedicated MA-PE * When connecting to dedicated P-GW, change DNS server address on PCO IE and link with dedicated DNS in DNS Query
* MA-PE DNS Cache Dedicated DNS query when TTL expires, acquiring dedicated MA-PE IP address II-2. Terminal * GL terminal
* Dedicated DNS * DNS TTL value reset function (DNS Query)
* Setting dedicated MA-PE address in dedicated DNS * Terminal client ~ dedicated P-GW ~ dedicated DNS ~ dedicated MA-PE * When the dedicated P-GW is connected, the terminal changes the cached DNS TTL value by changing the DNS server address on the PCO IE.
* DNS TTL expiration, the terminal can send a DNS query
* Obtain IP address of dedicated MA-PE from dedicated DNS

According to one embodiment, when the terminal 101 accesses the dedicated P-GW 113 and the DNS address change is detected on the Protocol Configuration Options Information Element (PCO IE), the terminal 101 transmits the MA- Change the PE URI automatically. A dedicated service terminal (MA-UE) sets and maintains a common MA-PE URI and a dedicated MA-PE URI at the time of service subscription.

The terminal 101 connects to the dedicated DNS 123. And performs the dedicated MA-PE (119) DNS query procedure to obtain the IP address of the dedicated MA-PE (119). After entering the zone, it performs service authentication with the dedicated MA-PE 119 through the acquired IP address.

According to another embodiment, the terminal 101 queries the dedicated DNS 123 when the MA-PE DNS Cache TTL expires to acquire a dedicated MA-PE IP address.

According to another embodiment, when the dedicated P-GW 113 is connected, the terminal 101 resets the cached DNS TTL value by changing the DNS address on the PCO IE. Then, the terminal 101 obtains the IP address by querying the dedicated DNS 123 with the DNS TTL expiration.

Now, a series of processes for providing a zone-based multi-network merging transmission service based on the above-described configuration will be described.

9 is a flowchart illustrating a network connection procedure when entering a zone according to an embodiment of the present invention.

Referring to FIG. 9, a terminal (hereinafter referred to as MA-UE) 101 transmits an access request including a dedicated APN to the eNodeB 103 (S103) when an APN switching event occurs (S101).

The eNodeB 103 transfers the connection request to the public S-GW 109 or the dedicated S-GW 133 connected to the eNodeB 103 (S105).

The common S-GW 109 or the dedicated S-GW 133 determines whether a dedicated APN is included in the connection request (S107).

If the APN is not included, that is, if the APN is included, the common P-GW 111 requests session creation (S109). The subsequent procedure is omitted.

On the other hand, if the dedicated APN is included, the common P-GW 109 or the dedicated P-GW 113 requests the dedicated P-GW 113 to create a session (S111).

The dedicated P-GW 113 determines whether the MA-UE 101 is a dedicated network service subscriber (S113). At this time, if it is not a subscriber to the dedicated network service, a session creation failure is returned (S115). Then, the connection failure is transmitted to the terminal 101 (S117, S119).

If the MA-UE 101 is a dedicated network service subscriber, the dedicated P-GW 113 allocates a private IP address to the MA-UE 101 and a communication session between the dedicated network 115 and the MA-UE 101 . Then, a session creation response is returned (S121). Then, the connection acceptance is transmitted to the MA-UE 101 (S123, S125). Then, bearer establishment between the MA-UE 101 and the dedicated P-GW 113 is completed.

FIG. 10 is a flowchart illustrating a multi-network merging transmission service procedure according to an embodiment of the present invention, and shows a process after the network connection procedure of FIG.

At this time, the MA-UE 101 is connected to the eNodeB 103, the network connection procedure is completed, and the MA-UE 101 is connected to the APs 105 and 131 and is connected to the intranet 115. That is, two different networks are connected to the network.

When the network access procedure is completed, that is, when the network access procedure to the zone EPC or the dedicated EPC is completed, the MA-UE 101 automatically or manually turns on the MA service (S201).

Herein, the MA service is an abbreviation of the multiplexing service for multiple networks and is hereinafter collectively referred to as an MA service.

The MA-UE 101 transmits an MA service activation request (Activation Request) to the IP address of the dedicated MA-PE 119 acquired through the dedicated DNS 123 (S203). Even when the terminal 101 is connected to the WiFi network, the terminal 101 can be configured to communicate with the authentication server 40 via the 3G / LTE network.

The dedicated MA-PE 119 transmits an MA Service Activation Response including the subscriber information of the MA-UE 101 and the response information generated based on the service availability state to the MA-UE 101 (S203).

Here, the response information may include a response result (authentication result), access information of the dedicated MA-GW 117, and the like. Since the response result is the response to the activation request, it corresponds to the authentication result. For example, information that accepts the activation request (Accepted), information that does not accept the activation request (Not Accepted), service failure information . The dedicated MA-PE 119 may include the address, port, etc. of the dedicated MA-GW 117 in the response information.

If authenticated, the MA-UE 101 accesses the dedicated MA-GW 117 address acquired in step S203.

When the application is activated (S205) and a packet is generated (TCP SYN), the MA-UE 101 accesses the dedicated MA-GW 117 and performs a TCP session procedure (S207). The TCP session procedure exchanges TCP SYN, SYN / ACK, and ACK between the MA-UE 101 and the dedicated MA-GW 117.

When the TCP connection is completed, the MA-UE 101 and the dedicated MA-GW 117 establish a first sub-flow.

Next, the MA-UE 101 and the dedicated MA-GW 117 perform SOCKS authentication and connection procedures (S209). Then, the dedicated MA-GW 117 completes the TCP session procedure through the TCP SYN, SYN / ACK, ACK exchange with the intranet 115 (S211).

Next, the MA-UE 101 and the dedicated MA-GW 117 perform a procedure of joining the second sub-flow to the first sub-flow (S213).

That is, when the MA-UE 101 is connected to a local area network (e.g., a WiFi network), the MA-UE 101 transmits a secondary subflow (step S213), which is joined to the first subflow (S213).

At this time, after the MA-UE 101 generates the MPTCP main sub-flow in the 3G / LTE network, it can generate the sub-sub-flow in the WiFi network when it is connected to the Wi-Fi network.

Thereafter, the MA-UE 101 is connected to the intranet 115 via the dedicated MA-GW 117. And transmits and receives data traffic through the first subflow of the LTE network and the second subflow of the WiFi network. The dedicated MA-GW 117 aggregates the uplink data received through the first subflow of the LTE network and the second subflow of the WiFi network and transmits the merged uplink data to the intranet 115 ). The dedicated MA-GW 117 receives the downlink data directed to the MA-UE 101 from the intranet 115 in which the TCP data session is established, and transmits the received downlink data to the first subflow of the LTE network and the WiFi network To the second sub-flow of FIG.

The embodiments of the present invention described above are not implemented only by the apparatus and method, but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (25)

A first sub-flow connected to a terminal located in a dedicated network service area through a first network, and a second sub-flow connected through the second network to a terminal, and merges the uplink data received through the second sub- Multiplexes the downlink data received through the dedicated network and transmits the divided downlink data to the terminal through the first sub-flow and the second sub-flow,
A dedicated packet data network gateway interworking with the dedicated network and the dedicated multi-network merging transmission apparatus, receiving a connection request from the terminal and forming a communication session between the terminal and the dedicated network,
And a dedicated multi-network service providing system. The method of claim 1,
Upon receiving a connection request including a dedicated APN (Access Point Name) from the terminal through the base station of the first network, the terminal requests a session to the dedicated packet data network gateway, and when receiving a connection request not including the dedicated APN A public serving gateway that requests a session to a public packet data network gateway
Further comprising: a second multi-network service providing system for providing a multi-network service. 3. The method of claim 2,
Wherein the dedicated packet data network gateway comprises:
Determining whether the terminal that transmitted the connection request is a dedicated network service subscriber and generating the communication session when the terminal is a dedicated network service subscriber. 3. The method of claim 2,
The public-
And receives a connection request including the dedicated APN according to the occurrence of the APN switching event of the terminal. 5. The method of claim 4,
The APN switching event includes:
At least one of a user selection through a specific application executed in the terminal, a reception of a base station identifier of the first network by the terminal, and a reception of a service set identifier (SSID) of the second network by the terminal A dedicated multi - network service provisioning system. 5. The method of claim 4,
The APN switching event includes:
A system for providing a dedicated multi-network service automatically generated from the terminal when the multi-network merging service is used in the public network service area and enters the dedicated network service area. 5. The method of claim 4,
The APN switching event includes:
A system for providing a dedicated multi-network service automatically generated by a terminal when using the service through the first network or the service through the second network in the public network service area and entering the dedicated network service area. The method of claim 1,
A dedicated authentication server for authenticating whether or not to provide dedicated multi-network merging transmission through the dedicated multi-network merging transmission apparatus to the terminal, the interface being interfaced with the dedicated multi-network merging transmission apparatus;
And when receiving a domain name server query from the terminal, associates an IP address of the dedicated authentication server with a dedicated domain name server
Further comprising: a second multi-network service providing system for providing a multi-network service. The method of claim 1,
A dedicated access point directly connected to the dedicated network and connecting the terminal to the second sub-
Further comprising: a second multi-network service providing system for providing a multi-network service. The method of claim 1,
A public access point connected to the multi-network merging transmission apparatus via an Internet network, the terminal being connected to the second sub-flow, and
And a firewall that is located between the public access point and the multi-network merging transmission apparatus and restricts traffic transmitted and received through the second subflow to authenticated traffic,
And a second multi-network service providing system. The method of claim 1,
Wherein the first network is a mobile communication network and the second network is a local area network. A first sub-flow connected to a terminal located in a dedicated network service area through a first network, and a second sub-flow connected through the second network to a terminal, and merges the uplink data received through the second sub- Multiplexes the downlink data received through the dedicated network and transmits the divided downlink data to the terminal through the first sub-flow and the second sub-flow,
A dedicated packet data network gateway for receiving a connection request from the terminal and forming a communication session between the terminal and the dedicated network, the terminal being connected to the first sub-flow,
A dedicated serving gateway for requesting session creation from the dedicated packet data network gateway when receiving a connection request from the terminal through the base station of the first network to the dedicated network;
And a dedicated multi-network service providing system. The method of claim 12,
The dedicated serving gateway,
And receives an access request including a dedicated APN (Access Point Name) from the terminal through the base station of the first network according to the occurrence of the APN switching event of the terminal. The method of claim 13,
The base station of the first network includes:
A public mobility management entity or a dedicated mobility management entity in cooperation with the dedicated serving gateway,
The dedicated serving gateway,
Wherein the private packet data network gateway and the public packet data network gateway are interfaced with the private packet data network gateway and the public packet data network gateway, respectively, and the interworking with the public mobility management entity or the dedicated mobility management entity, Requesting a session with a gateway, and requesting a session to the public packet data network gateway when the terminal is not a dedicated network service subscriber. The method of claim 12,
And an interface for interworking with the dedicated multi-network merging transmission apparatus, wherein the dedicated multi-network merging transmission apparatus authenticates whether to provide a dedicated multi-network merging transmission through the dedicated multi-network merging transmission apparatus to the terminal. And
And when receiving a domain name server query from the terminal, associates an IP address of the dedicated authentication server with a dedicated domain name server
Further comprising: a second multi-network service providing system for providing a multi-network service. The method of claim 12,
A dedicated access point directly connected to the dedicated network and connecting the terminal to the second sub-
Further comprising: a second multi-network service providing system for providing a multi-network service. The method of claim 12,
A public access point connected to the multi-network merging transmission apparatus via an Internet network, the terminal being connected to the second sub-flow, and
And a firewall that is located between the public access point and the multi-network merging transmission apparatus and restricts traffic transmitted and received through the second subflow to authenticated traffic,
And a second multi-network service providing system. A method for a terminal to provide a dedicated multi-network service,
Connecting the first sub-flow through the first network and the second sub-flow through the second network, connecting the dedicated multi-network merging transmission apparatus connected to the private network by entering the dedicated network service area of the terminal,
Transmitting the uplink data to the MSS through the first sub-flow and the second sub-flow, respectively; and
Receiving the downlink data from the dedicated multi-network combine transmission apparatus through the first sub-flow and the second sub-flow, respectively,
The dedicated multi-network merging transmission apparatus includes:
Merging the uplink data and transferring the uplink data to the destination server through the dedicated network, and dividing the downlink data and transmitting the downlink data to the terminal. The method of claim 18,
Before the connecting step,
Further comprising the step of the terminal transmitting a connection request including the dedicated APN to a public serving gateway connected to the base station of the first network when a switching event to a dedicated APN (Access Point Name) occurs,
The connection request may include:
To the dedicated packet data network gateway connected to the dedicated network and the dedicated multi-network merging transmission apparatus. The method of claim 18,
Before the connecting step,
Further comprising the step of the terminal transmitting a connection request including the dedicated APN to a dedicated serving gateway connected to the base station of the first network when a switching event to a dedicated APN (Access Point Name) occurs,
The connection request may include:
To the dedicated packet data network gateway connected to the dedicated network and the dedicated multi-network merging transmission apparatus. The method of claim 18,
Wherein the connecting step comprises:
Connecting the first sub-flow through a dedicated packet data network gateway of the first network, and
And connecting the second sub-flow to a dedicated access point directly connected to the dedicated network
The method comprising the steps of: The method of claim 18,
Wherein the connecting step comprises:
Connecting the first sub-flow through a dedicated packet data network gateway of the first network, and
Accessing the dedicated multiplexing transmission apparatus through an Internet network and connecting the second sub-flow to a public access point to which the second sub-flow is connected,
Wherein a firewall is located between the public access point and the dedicated MSS merging transmission device for limiting traffic transmitted and received through the second subflow to authorized traffic. The method of claim 18,
Before the connecting step,
When the terminal enters the zone, if the domain name server query period has expired, accessing the dedicated domain name server to obtain the address of the dedicated authentication server, and
Acquiring information of the dedicated multiplexing transmission apparatus by accessing the address of the dedicated authentication server
The method comprising the steps of: The method of claim 18,
Before the connecting step,
Changing a pre-stored dedicated domain name server address to a detected address when a change of address of a dedicated domain name server is detected by accessing a dedicated packet data network gateway of the first network when the terminal enters a zone,
Accessing the changed address to obtain the address of the dedicated authentication server, and
Acquiring information of the dedicated multiplexing transmission apparatus by accessing the address of the dedicated authentication server
The method comprising the steps of: The method of claim 18,
Before the connecting step,
Resetting a domain name server query period if a change in address of a dedicated domain name server is detected by accessing a dedicated packet data network gateway of the first network when the terminal enters a zone,
Accessing the dedicated domain name server to obtain the address of the dedicated authentication server, and
Acquiring information of the dedicated multiplexing transmission apparatus by accessing the address of the dedicated authentication server
The method comprising the steps of:

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