KR20160001213A - Appratus and Method Creating User Networks based on Centralized Control - Google Patents

Abstract

The present invention relates to a method for sharing content between user networks based on centralized control in a controller of a provider network based on centralized control. The method comprises the following steps: receiving, from a service server, a request for configuring a virtual network environment for two or more user networks which exist in a virtual network; collecting information on the user networks; configuring a digital living network alliance (DLNA) packet forwarding rule after a network topology is confirmed; receiving a request message for processing a DLNA control packet through the user networks, and setting a packet forwarding rule through the user networks and the provider network; and transmitting a response message for processing the DLNA control packet to the user networks and, at the same time, transmitting a service start confirmation to the service server after generating the virtual network is completed.

Description

[0001] APPARATUS AND METHOD FOR CREATING CENTRALIZED CONTROL-BASED USER NETWORK [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a network technology, and more particularly, to a network generating apparatus and method capable of sharing a desired content by configuring a plurality of user networks into one virtual network by utilizing a centralized control networking technology.

The DLNA (Digital Living Network Alliance) is an interface standard for connecting various home appliances to a home network in order to share and control information among different AV media devices in a home-network environment. The DLNA (Digital Living Network Alliance) It is a standard for interoperability between structure-based digital home network platforms, media formats, content protection schemes, and media devices.

Recent user terminals (smart phones, smart TVs, laptops, desktops, etc.) use various DLNA-based content services without restriction of time and place by connecting home appliances to wired and wireless networks through DLNA-based interoperability. With this home-network technology being activated, the following remote home-network access methods and networking methods between home-networks are being invented.

A content transmission method and system (Application No. P2008-329003) for transmitting content from a terminal in a home-network to a wide area network includes a home-gateway, a content control terminal, and a content reproduction terminal, to be. Home-to-network media content sharing system and method thereof (Application No. 10-2005-0106007): It is an invention to retrieve and provide contents through a unique protocol between a location information management server and home servers. System and method for remotely providing home contents (Application No. 10-2010-0134506): It is an invention to share information of a remote home-network using an additional function at a visited terminal of a visited home network.

In recent years, changes in IT services and technology environments, such as network management cost, mobility, and virtualization, have demanded a major change in networking technology. This trend requires communication networks to be more efficient and automated to control and manage the network, and requires that computing and networking resources be integrated and controlled. For this, a centralized control technology such as so-called Software Defined Network (SDN) is a flexible structure in which the operation of the communication network can be dynamically controlled according to various applications and environment by separating virtual networks from each other while maintaining hardware performance. .

The prior art applies additional functionality to the components of a DLNA-based user network. For example, in the case of a content transmission method and system (Application No. P2008-329003) for transmitting content from a terminal in a home-network to a wide area network, a new protocol is applied between a home gateway, a content control terminal, . The home network inter-network media content sharing system and its method (Application No. 10-2005-0106007) retrieve and receive content through a unique protocol between the location information management server and home servers. In addition, a system for remotely providing home contents and a method thereof (Application No. 10-2010-0134506) is an invention for sharing information of a remote home-network by using an additional function at a visiting terminal of the visited home-network.

Since these inventions require addition and expansion of functions within the DLNA-based user networks, it is difficult to include these inventions in all user networks, so that they are limited in terms of scalability.

The present invention relates to a network generating apparatus and method capable of mutually sharing a plurality of user networks in a form of a virtual network by linking a DLNA-based networking technology and a centralized control networking technology.

The present invention relates to a method for content sharing between centralized control based user networks in a service server connected to a controller of a centralized control based operator network, Determining a service level agreement (SLA); and configuring a virtual network environment for a transmitting user network and a receiving user network according to a service start request from a transmitting user to a specific receiving user, And requesting the controller.

The present invention relates to a method for content sharing between centralized control based user networks in a controller of a centralized control based operator network, and a method for requesting to configure a virtual network environment for two or more user networks existing in a virtual network from a service server, Receiving a DLNA control packet processing request message through a user network and transmitting the DLNA control packet processing request message to the user network and the user network; And transmitting the DLNA control packet processing response message to the user network and delivering the service start confirmation to the service server after completion of the creation of the virtual network.

The present invention relates to a service server connected to a controller of a centralized control-based service provider network and configured to configure a subscriber profile and determine a desired service type and a service level agreement (SLA) And a service management unit for requesting the controller to configure a virtual network environment for a transmission user network and a reception user network according to a service start request from a transmission user subscribed to the service to a specific reception user.

The present invention relates to a controller device, comprising: a network information collecting unit collecting information of two or more user networks as requested to configure a virtual network environment for two or more user networks existing in a virtual network from a service server; A packet forwarding rule setting unit for configuring a DLNA packet forwarding rule, receiving a DLNA control packet processing request message through a user network, and setting a packet forwarding rule to a user network and a provider network, And a virtual network setup unit for transmitting and delivering the DLNA control packet processing response message to the user network and delivering a service start confirmation to the service server.

The present invention uses a characteristic of a centralized control network to group a plurality of user networks geographically dispersed by a minimum change (AP extension) among existing user network devices into one virtual user network, To allow other user networks to share the content of a particular user network.

1 is a DLNA-based user network configuration diagram.
2 is a block diagram of a centralized control-based business operator network.
3 is a block diagram of a user network content sharing system utilizing a centralized control networking technology according to an embodiment of the present invention.
4 is a configuration diagram of a service server according to an embodiment of the present invention.
5 is a configuration diagram of a controller according to an embodiment of the present invention.
6A to 6C are flowcharts illustrating a method of sharing contents of a centralized control networking-based user network according to an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

The terms used throughout the specification are defined in consideration of the functions in the embodiments of the present invention and can be sufficiently modified according to the intentions and customs of the user or the operator. It should be based on the contents of.

The present invention utilizes the characteristics of a centralized control network in the provision of a DLNA-based user network service so that a plurality of user networks that are geographically dispersed without modification (or with minimal modification) And a method and system for allowing other user networks to share content of a specific user network by avoiding collision of IP addresses and the like.

1 is a DLNA-based user network configuration diagram.

Referring to Figure 1, there are various types of devices operating in the DLNA standard in the user network. For example, there are devices such as DMS, DMR, DMC, and DMP, and devices such as M-DMS, M-DMP, M-DMD, M-DMU, and M-DMC. Here, the DMS is a device that holds contents to be actually shared, and the DMC is a device that finds a list of contents distributed by the DMS and connects them to another device (DMR) capable of executing the contents list. The DMR is a device for reproducing contents, and the DMP is a device for reproducing contents distributed by the DMS.

2 is a block diagram of a centralized control-based business operator network.

Referring to FIG. 2, the network includes a centralized service provider network 1 including an access point (AP), a switch and routers, and a controller 2 for controlling network nodes in the upper layer.

A content sharing system and method of a centralized control based user network of the present invention is characterized in that a plurality of user networks, such as the one shown in FIG. 1, around an access point, which is a node of the centralized control enterprise network 1 shown in FIG. 2, And forms a network based on the centralized control. That is, in the case of the centralized control AP, it may be included in the user network device, but in the present invention, since it exists in the control domain of the controller in the aspect of centralized control, it is classified as one node of the provider network.

3 is a block diagram of a system for sharing contents of a centralized control network-based user network according to an exemplary embodiment of the present invention.

Referring to FIG. 3, the centralized control network-based user network content sharing system includes at least one DLNA-based user network 10-1, 10-2, ... 10-n, a centralized control- ), A controller (40), and a service server (50).

The service server 50 provides a service management function for providing a DLNA-based user network service on the centralized control-based provider network 30. [ This will be described in detail with reference to FIG. 4 below.

The centralized control APs 20-1, 20-2, ..., 20-n are devices for performing the current AP function, the centralized control interface function, and the IP address conversion function for the present invention.

The centralized control based operator network 30 may consist of networking nodes that are under centralized control or current networking nodes that do not receive centralized control.

The controller 40 performs a control operation for creating a virtual network using centralized control based user networks, which will be described in detail with reference to FIG.

4 is a configuration diagram of a service server according to an embodiment of the present invention.

4, the service server 50 includes a service subscription unit 410, a service management unit 420, and a service quality management unit 430.

The service subscription unit 410 configures a subscriber profile and determines a desired service type and a service level agreement (SLA) according to a service subscription request from a user. In addition, the service subscriber unit 410 deletes the subscriber information according to the service cancellation request from the user.

The service management unit 420 requests the controller to configure a virtual network environment for the transmission user network and the reception user networks according to the service start request from the transmission user subscribed to the service to the specific reception user. In addition, the service management unit 420 requests the controller to process the service statistical information according to the service end request from the user.

After receiving the experience of service (EoS) feedback from the user after the virtual network session is established, the quality of service managing unit 430 modifies the QoS and requests the controller to modify the QoS.

5 is a configuration diagram of a controller according to an embodiment of the present invention.

Referring to FIG. 5, the controller 40 includes a network information collecting unit, a packet forwarding rule setting unit, a virtual network setting unit, and an IP address converting unit.

The network information collection unit 510 collects information of two or more user networks as requested by the service server to configure a virtual network environment for two or more user networks existing in the virtual network.

After confirming the network topology, the packet forwarding rule setting unit 520 configures the DLNA packet forwarding rule, receives the DLNA control packet processing request message through the user network, and sets a packet forwarding rule to the user network and the carrier network. In addition, the packet forwarding rule setting unit 520 resets the packet forwarding rule according to the QoS modification request from the service server, and transmits the reset packet forwarding rule to the APs of the user network.

After completing the creation of the virtual network, the virtual network processing unit 530 transmits and delivers the DLNA control packet processing response message to the user network and delivers the service start confirmation to the service server. The virtual network processing unit 530 processes the service statistical information in response to the service end request from the service server, requests the nodes receiving the centralized control command to release the forwarding rule, deletes the virtual network, To the service server.

The IP address management unit 540 processes the address translation through the transmission of the IP address information before and after the collision to the corresponding centralized control APs in a situation where an IP address collision occurs.

6A to 6C are flowcharts illustrating a method of sharing a user network content based on a centralized control network according to an exemplary embodiment of the present invention. Although a signal flow between two user networks, i.e., a transmitting user network and a receiving user network, is described herein to facilitate understanding of the present invention, two or more user networks may participate in one virtual network, It does not ask for subscription, start, end, or termination.

Referring to FIG. 6A, in response to a service subscription request (S601) from a transmitting user 1a, the service server 50 configures a subscriber profile and determines a desired service type and SLA (S602).

According to the service start request from the subscribing transmission user 1a (S603), the service server 50 constructs a virtual network environment for the user networks existing in the corresponding virtual network to request the controller 40 to start the service (S604).

The controller 40 collects information of participating user networks, for example, IP address information of DLNA devices, and confirms whether there is an IP address conflict (S605, S606).

Since one DLNA-based user network uses private addresses, the IP addresses assigned to the devices of different user networks may be the same. Therefore, the address translation is required for the IP address where the collision occurs with respect to the traffic output from the user network to the provider network, and the controller 40 performs detection and subsequent control. In another embodiment, the user network information checking process can be performed by other methods such as manual setting at the service server without controller intervention.

Thereafter, the controller 40 confirms the network topology (which can be performed by the service server), and configures a DLNA packet forwarding rule (S607). The user network requires a NAT function in order to allow a plurality of user networks to communicate with each other through a provider network, but the NAT function is not further discussed in the present invention.

The controller 40 receives the DLNA control packet from the transmission user network 10a through the transmission centralized control AP 20a (S608 and S609), and sets a packet forwarding rule to the user network and the provider network (S610, S611 , S612). In a situation where an IP address collision occurs, the controller 40 causes the centralized control APs 20a and 20b to process the address translation by transmitting the IP address information before and after the collision (S610, S614, and S615)). After that, the IP address where the collision occurs in the user network is changed to the temporary IP address allocated from the upper side, and the packet is transmitted to the carrier network.

Thereafter, an end-to-end session establishment between provider networks is completed (S620), and a DLNA data packet exchange may be performed between the transmission user network 10a and the reception user network 10b (S621).

At this time, since the SLA (Service Level Aggrement) previously set and the QoS (Quality of Service) applied to the actual network may be different from the user's experience of service (EoS), the service provider network performs the EoS feedback process from the user. That is, the service server 50 receives the EoS feedback from the user (S622), and requests the controller 40 to modify the QoS (S623, S624). Accordingly, the controller 40 can complete the appropriate packet forwarding rule setting by repeating the process of resetting the packet forwarding rule (S625, S626). Thereafter, the DLNA data packet exchange may be performed with the forwarding rule reset between the transmitting user network 10a and the receiving user network 10b (S627).

Referring to FIG. 6C, upon receiving a service termination request from the transmitting user 1a (S628), the service server 50 requests the controller 40 to terminate the service (S629).

Then, the controller 40 processes the service statistical information (S630), and requests the transmission centralized control AP 20a and the reception centralized control AP 20b to release the forwarding rate (S631, S632). Thereafter, the controller 40 deletes the virtual network (VN) (S633), and transmits a service termination confirmation message to the service server 50.

Finally, when the transmission user 1a requests service termination (S635), the service server 50 deletes all information of the user (S636).

Claims (16)

A method for content sharing between centralized control based user networks at a service server connected to a controller of a centralized control based operator network,
Configuring a subscriber profile according to a service subscription request from a user and determining a desired service type and a service level agreement (SLA)
Requesting the controller to configure a virtual network environment for a transmission user network and a reception user network in response to a service start request from a transmission user subscribed to a service to a specific reception user, A method of sharing content between user networks.
The method according to claim 1,
Modifying the QoS upon receipt of an Experience of Service (EoS) feedback from the user after the virtual network session is established;
Further comprising the step of requesting the controller to modify the QoS of the centralized control user network.
The method according to claim 1,
Further comprising the step of requesting the controller to process service statistical information in response to a service termination request from a user.
The method according to claim 1,
Further comprising the step of deleting subscriber information in response to a service termination request from a user.
A method for content sharing between centralized control based user networks in a controller of a centralized control based operator network,
Receiving a request from a service server to configure a virtual network environment for two or more user networks existing in a virtual network,
Collecting information of the two or more user networks,
Configuring a DLNA packet forwarding rule after confirming the network topology,
Receiving a DLNA control packet processing request message through a user network and setting a packet forwarding rule to a user network and a carrier network;
And transmitting the DLNA control packet processing response message to the user network after the creation of the virtual network, and delivering the service start confirmation to the service server. .
6. The method of claim 5,
Further comprising the step of requesting the centralized control APs to process the address translation by transmitting the IP address information before and after the collision in the situation where the IP address conflict occurs.
6. The method of claim 5,
Resetting a packet forwarding rule as QoS modification is requested from the service server,
And forwarding the reconfigured packet forwarding rules to the APs of the user network.
6. The method of claim 5,
Processing the service statistical information in response to a service termination request from the service server,
Requesting the nodes receiving the centralized control command to release the forwarding rule and deleting the virtual network;
And forwarding the service end confirmation to the service server. ≪ Desc / Clms Page number 20 >
A service server connected to a controller of a centralized control-based operator network,
A service subscription unit configured to configure a subscriber profile and determine a desired service type and a service level agreement (SLA) according to a service subscription request from a user;
And a service management unit for requesting the controller to configure a virtual network environment for a transmission user network and a reception user network according to a service start request from a transmission user subscribed to the service to a specific reception user.
10. The method of claim 9,
Further comprising a quality of service modifying unit for modifying the QoS and requesting the controller to modify the QoS after receiving the experience of service (EoS) feedback from the user after the virtual network session is established.
The method of claim 9, wherein the service management unit
And requests the controller to process the service statistical information according to a service termination request from the user.
The method of claim 9, wherein the service subscription unit
And deletes the subscriber information according to a service termination request from the user.
A network information collecting unit collecting information of the two or more user networks as requested to configure a virtual network environment for two or more user networks existing in a virtual network from a service server;
A packet forwarding rule establishing unit for establishing a DLNA packet forwarding rule after confirming the network topology, receiving a DLNA control packet processing request message through a user network, and setting a packet forwarding rule to a user network and a provider network,
And a virtual network setting unit for transmitting and delivering the DLNA control packet processing response message to the user network after completion of the creation of the virtual network and delivering the service start confirmation to the service server.
14. The method of claim 13,
Further comprising an IP address management unit for requesting the centralized control APs to process the address translation by transmitting the IP address information before and after the collision in a situation where an IP address collision occurs.
14. The apparatus of claim 13, wherein the packet forwarding rule setting unit
Resets the packet forwarding rule according to the QoS modification request from the service server, and delivers the reset packet forwarding rule to the APs of the user network.
14. The system according to claim 13, wherein the virtual network processing unit
Processing the service statistical information in response to a service termination request from the service server, requesting the nodes receiving the centralized control command to request release of the forwarding rule, deleting the virtual network, and delivering the service termination confirmation to the service server. Lt; / RTI >

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