WO2016047998A1

WO2016047998A1 - Redirection control system for streaming service

Info

Publication number: WO2016047998A1
Application number: PCT/KR2015/009933
Authority: WO
Inventors: 이승철; 이태경; 이창환
Original assignee: 주식회사 커널아이
Priority date: 2014-09-23
Filing date: 2015-09-22
Publication date: 2016-03-31
Also published as: KR101491640B1

Abstract

The present invention relates to a redirection control system for a streaming service, the system mainly comprising a control processing component (CPC) and a traffic processing component (TPC) as devices for data communication between IP devices having a private IP address, wherein the control processing component and the traffic processing component operate in association with each other when performing control signaling, the control processing component performs connection and control signaling exchange between IP devices, the traffic processing component receives a traffic address from each IP device during the performing process and then delivers the information to the control processing component, and the traffic processing component comprises a redirection controller (RC) involved in traffic relay. The redirection control system for a streaming service according to the present invention does not generate the same problems as in the case where a public IP is allocated to a small personal IP device as a target IP device, such as IP device security problems due to intrusion by an unauthorized user, users' unintended battery use, network usage, etc. In addition, the redirection control system can stably maintain connection of IP devices even under unstable network situations, or even when an allocated IP frequently changes due to frequent movement, etc. in a cellular wireless network, and also can solve the following conventional problems: the problem of traffic failure occurrence, the problem of session continuity, the problem of no more than 65535 resources being allocated, and the problem of expandability.

Description

Redirection Control System for Streaming Service

The present invention relates to a redirection control system, and more particularly, to a security of an IP device due to intrusion of an unauthorized user, such as when a public IP is assigned to a small personal IP device as a target IP device. Problems, unintended user use of the battery, network usage, and so on. Also, the allocated IP is frequently replaced due to frequent movements in cellular wireless networks. In case of using an unstable network, it is possible to maintain the connection of an IP device steadily, and also to cause a problem of a conventional traffic fail, a problem of continuity of a session, and to use TCP. The present invention relates to a redirection control system for a streaming service that can solve a problem of failing to allocate more than one resource and a scalability problem.

1 is a conceptual diagram of a connection system based on a conventional connection protocol (server oriented protocol). As shown in FIG. 1, in a server system based on a conventional connection protocol, an IP device is a server based on a connection protocol and is based on a connection protocol such as TCP. based) maintain a connection and maintain state and IP address for the IP device. On the other hand, when a connection is received from an IP client, a server based on a connection protocol connects signaling to an IP device through an existing connected channel.

However, in a server system based on a conventional connection protocol, an IP terminal device such as an existing IP camera is connected to a target IP device from a source IP device. The public IP is assigned to the target IP device. In this case, the pool of the public IP is limited, so that the public IP can not be assigned indefinitely, and the small personal IP device is used as the target IP device. When a public IP is assigned to a device, a security problem occurs on the IP device because it is not protected from an external network attack such as unintended network hacking, virus penetration, and leakage of personal information. In addition, problems such as unintended battery usage and network usage of the user occur.

On the other hand, in order to avoid the common IP allocation problem, the conventional IP device actively connects to the server. At this time, in order to manage the IP device stably and continuously, a connection protocol is established between the IP device and the server. Use a connection oriented protocol based connection. However, due to frequent replacement of IPs assigned by frequent movements in cellular wireless networks, or frequent disconnections due to unstable network conditions, the connection oriented protocol based method is used. Difficulty in maintaining the connection of many IP devices.

In addition, in the case of the method based on the connection protocol between the IP device and the server, while the IP device is connected to the peer IP device and sending traffic, it may be temporarily disconnected due to an unstable network condition. Even if this happens, the existing session is completely disconnected, causing a traffic fail. In addition, if the existing session is broken, the existing session is released. Since the session is restarted, there is a problem in the continuity of the session and also allocates resources for each connection with a limited IP device, because of the limited resources for the connection. For example, when using TCP, a problem occurs in which more than 65535 resources cannot be allocated. For reference, this is a limit for assignments that are independent of the load on the system.

In addition, a server system based on a conventional connection protocol requires a lot of system load when performing a streaming service in a server, and thus, a flexible system scalability is required to solve this problem. However, the conventional streaming device is a centralized system in which a signaling component and a traffic component are bundled together due to a close linkage between signaling and traffic. Structure, which causes problems with scalability.

Accordingly, the present invention has been invented in view of the above-described conventional problems, such as when a public IP is assigned to a small personal IP device as a target IP device. The purpose of the present invention is to provide a redirection control system that does not cause problems such as security problems, unintended battery usage of the user, and network usage.

In addition, the purpose of the present invention is to provide a redirection control system capable of maintaining the connection of IP devices in a cellular wireless network that is frequently replaced by frequent movement, etc., or even in an unstable network situation. .

In addition, the conventional traffic fail (traffic fail) problem, the problem of continuity of the session, when using TCP (TCP), can not allocate more than 65535 resources, streaming services that can solve the scalability problem It is an object of the present invention to provide a redirection control system.

In order to achieve the above object, the present invention provides a data exchange between an IP terminal device (hereinafter referred to as an IP device) having a private IP address in a redirection control system for a streaming service. An apparatus for data communication, comprising a control processing component (CPC) and a traffic processing component (TPC), wherein the control processing component and the traffic processing component are mutually different when performing a control signaling operation. And the control processing element performs connection and exchange of control signaling between IP devices, and the traffic processing element receives a traffic address from each IP device in this process and delivers this information to the control processing element. After that, the traffic processing element controls the redirection to engage in the traffic relay. It characterized in that it comprises a: (RC Redirection Controller).

The redirection controller (RC) monitors the IP address (IP address) of an IP device allocated from another device through a connection less protocol method with the IP device, and monitors the status of the IP device and the network to which the IP device belongs. By monitoring the status, it is possible to manage more than 65,535 IP devices per module, assuming that a module responsible for control processing has been assigned a public IP address. Allows you to manage IP devices.

In addition, the redirection controller exchanges device control information (hereinafter, referred to as signaling) between the IP devices through a connection between the IP devices, and establishes a connection protocol based on a connection protocol between the IP devices when it wants to establish a session. By establishing a temporary connection in an oriented protocol based manner, session management can be performed after disconnection of the connection oriented protocol based manner after signaling.

The redirection controller also relays traffic when it wants to exchange user data traffic (hereinafter, referred to as traffic) between IP devices.

The redirection control system for a streaming service according to the present invention can be applied to a wireless communication network, particularly to IP devices that are not easy to allocate a public IP address in each wireless communication network. It is applied to a server for a server, and can be applied to a mobile network which is not easy because of a network instability and a connection oriented protocol based method.

The redirection control system for a streaming service according to the present invention is a security of an IP device due to an intrusion of an unauthorized user, such as when a public IP is assigned to a small personal IP device as a target IP device. Problems, unintended user's unintended battery usage, network usage, etc. do not occur, and the IP allocated by frequent movements in the cellular wireless network is frequently replaced, In case of an unstable network, the IP device can be connected firmly, and a problem of a conventional traffic fail, a problem of continuity of a session, and a case of using TCP can be used. It can solve the problem of failing to allocate more resources and the problem of scalability.

1 is a conceptual diagram of a connection oriented protocol based server system based on a conventional connection protocol;

2 is a configuration diagram of a redirection control system (RC system) for a streaming service according to the present invention;

3 is a flowchart illustrating an IP device (IP device) registered in a redirection controller (RC) in a redirection control system for a streaming service according to an embodiment of the present invention.

4 is a signaling control procedure between IP devices in a redirection control system for a streaming service according to an embodiment of the present invention.

5 is a traffic communication procedure between IP devices in a redirection control system for a streaming service according to an embodiment of the present invention.

6 is a diagram illustrating a redirection control procedure in a redirection control system for a streaming service according to an embodiment of the present invention.

The redirection control system according to the present invention uses a connection less protocol to manage the status and addresses of many IP devices that are logically or physically connected to a server. Thus, even if any part of the network element between the redirection controller and the IP device is reset, the stability of the network is improved by solving the problem of resetting the connection between the IP device and the redirection controller. Do not affect management of the liver.

In order to reflect the state of the IP device that changes in some cases and the state of the network, the IP device attempts registration according to a specific case in the redirection controller RC. In the case of registration, a power state change in which the power state is changed, a device state change in which the state of the IP device (active / idle…) is changed, and a state of the network (IP address…) An example is when a network state change is required and a periodic update is required.

On the other hand, when the redirection controller (RC) according to the present invention needs to send and receive control signals between the IP devices, the redirection controller (RC) temporarily performs a connection oriented protocol based connection. do. The redirection controller (RC) performs control signals between the IP devices and switches to a mode for generating traffic using a method such as a real-time transmission protocol (RTP). After starting to perform communication operations, the connection oriented protocol based connection can be disconnected as necessary.

The redirection controller RC requests a specific command from one or more IP devices, if necessary, in order to allow the IP device to make a connection oriented protocol based connection to the redirection controller RC. For example, when a connection request is received from a source IP device, the redirection controller RC, for connection with a managed target IP device (target IP device), receives a redirect controller (redirect controller). By using the address of the target IP device registered in RC), push notification (paging) or paging to the target IP device to request the target IP device to connect to the redirection controller, and then enter the target IP device. Even if a connection oriented protocol based connection is established between the IP device and the redirect controller. The.

On the other hand, the push notification method that is provided to the IP device managed by the redirect controller is the embodiment of paging (connection request for signaling, etc.), Probing (request for device status) , Control (request to limit control of device configuration, etc.).

Hereinafter, exemplary embodiments of a redirection control system for a streaming service according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a configuration diagram of a redirection control system (RC system) for a streaming service according to the present invention. As shown in FIG. 2, the redirection control system for a streaming service according to the present invention is for data communication between IP devices (IP terminal devices or IP devices) having a private IP address. As an apparatus, a control processing component (CPC) and a traffic processing component (TPC) are largely composed of a control processing component (CPC) and a traffic processing component (TPC) when performing a control signaling operation. The control processing element (CPC) performs connection and exchange of control signaling between IP devices, and the traffic processing element (TPC) receives the traffic address from each IP device in this process and receives this information. It delivers to the control processing element (CPC), and then the traffic processing element (TPC) is redirected to engage in traffic relay It characterized in that it comprises a: (Redirection Controller RC) group.

The control processing element is composed of a connection less interface and a connection oriented protocol based interface, wherein the connection less interface manages the status of the IP device, manages the IP address, and starts the streaming from the guest IP device or the remote configuration of the IP device. When a request for connection oriented protocol based access is received from a host IP device, a paging, which is one of push notifications to the managing host IP device, is performed through the connection less interface. Request the device to connect to the redirect controller.

On the other hand, when probing to an IP device managed directly by the redirect controller for reasons such as OA & M (Operation, Administration & Maintenance), push notification can be issued. At this time, the IP device sends a response or redirects the redirect controller (RC). ) To be connected.

The traffic processing element (TPC) is composed of two modules, an RTP address processor and a traffic processor, and operates in conjunction with a control processing element (CPC) at the time of control signaling requiring a host IP device and a streaming from a guest IP device. During signaling, when the traffic processing element (CPC) registers traffic address information such as RTP of each host IP device and a guest IP device, the RTP address processor processes this information, and the traffic processor processes the traffic address of the registered IP value. By using, it performs a traffic communication (traffic communication) with each IP device is characterized in that the relay operation.

When signaling is performed for a streaming service, an interface module based on the connection processing protocol of the control processing element (CPC) and the RTP address processor of the traffic processing element (TPC) are synchronized with each other for an ongoing session.

3 is a flowchart illustrating a process in which an IP device (IP device) is registered in a redirection controller RC in a redirection control system for a streaming service according to an embodiment of the present invention. As shown in FIG. 3, in the redirection control system for streaming service according to an embodiment of the present invention, an IP device (IP device) requests device information registration from the redirection controller RC due to power on or the like. In this case, the redirection controller (RC) analyzes the public IP address of the IP device automatically delivered by the NAT router. After that, the redirection controller (RC) registers the public IP address, the description IP address, and the status information of the IP device, and after registration, the redirection controller (RC) uses the public IP address of the IP device automatically translated by the public NAT router. It returns to, telling the IP device what its public address is translated by the external router.

FIG. 4 is a procedure of signaling control between IP devices in a redirection control system for streaming service according to an embodiment of the present invention. As shown in FIG. 4, in a redirection control system for a streaming service according to an embodiment of the present invention, signaling control between IP devices is performed using a redirection controller (RC) for signaling control between IP devices. The process of disconnection and disconnection is performed by connecting a connection protocol based connection protocol to the redirection controller (RC) in order to access the host IP device from the guest IP device. After finding the host IP device in the database, push the push notification using the public IP address registered to the device in the database, and connect the connection protocol based connection from the host IP device to the redirect controller (RC). In turn, the redirection controller (RC) connects the guest IP device with the host IP device, thereby providing control signaling with each other. So I can get.

5 is a flowchart illustrating a traffic communication procedure between IP devices in a redirection control system for a streaming service according to an embodiment of the present invention. As shown in FIG. 5, traffic communication between IP devices in a redirection control system for a streaming service according to an embodiment of the present invention is a process for traffic communication between IP devices after signaling control between IP devices. In the process, each IP device transmits each private IP traffic address to the redirection controller RC. The redirection controller RC registers each IP device public IP traffic address automatically converted by the NAT router in the database. Then, when the host IP device sends traffic to the redirection controller (RC), the redirection controller (RC) finds the public IP traffic address information of the guest IP device associated with the host IP device in the database and finds the public IP address of the guest IP device. The traffic relay is performed by retransmitting traffic to the network.

6 is a flowchart illustrating a redirection control procedure in a redirection control system for a streaming service according to an embodiment of the present invention. As shown in FIG. 6, in the redirection control system for the streaming service according to an embodiment of the present invention, in order to receive a service from the host IP device, the guest IP device is connected to the control processing element (CPC). If required, paging is given to the host IP device managed by the control processing element (CPC), and the host IP device receives the paging and accesses the control processing element (CPC).

The guest IP device then sends a control message (called signaling) to the control processing element (CPC), sends the traffic address prepared by the concurrent guest IP device to the traffic processing element (TPC), and the traffic processing element (TPC) is the guest traffic address. Received information is delivered to the control processing element (CPC).

The control processing element (CPC) inserts information of the traffic processing element (TPC) and guest traffic address information from the guest IP device into a control message, and then delivers the message to the host IP device. After receiving the Control message, the Host IP device sends a response to the control processing element (CPC), and simultaneously sends a host traffic address to the traffic processing element (TPC), and the traffic processing element (TPC) sends this information to the control processing element. (CPC).

Meanwhile, the control processing element (CPC) inserts the information of the traffic processing element (TPC) and the host traffic address information from the host IP device into the control response message, and then transfers the response message to the guest IP device.

The configuration and operation as described above are not limited to the claims of the present invention as an embodiment, and various changes and modifications are possible within the scope of not changing the technical spirit of the present invention. It is obvious to those who are engaged.

Description of Codes:

RC: Redirection Controller TPC: Traffic Processing Element

CPC: Control Processing Factor

Claims

In the redirection control system for a streaming service,

A device for data communication between IP devices having a private IP address, which is largely a control processing component (CPC) and a traffic processing component (TPC). And the control processing element and the traffic processing element interoperate with each other when performing a control signaling operation. The control processing element performs connection and exchange of control signaling between IP devices, and the traffic processing element performs this operation. It receives the traffic address from each IP device in the process and delivers this information to the control processing element. Afterwards, the traffic processing element includes a redirection controller (RC) for engaging in traffic relay. Redirection control system for streaming service
The method of claim 1,

The control processing element is composed of a connection less interface and a connection oriented protocol based interface, wherein the connection less interface manages the status of the IP device, manages the IP address, and starts the streaming from the guest IP device or the remote configuration of the IP device. When a request for connection oriented protocol based access is received from a host IP device, a paging, which is one of push notifications to the managing host IP device, is performed through the connection less interface. Redirection control system for streaming service, characterized in that it requires the device to connect to the redirection controller
The method of claim 1,

The traffic processing element (TPC) is composed of two modules, an RTP address processor and a traffic processor, and operates in conjunction with a control processing element (CPC) at the time of control signaling requiring a host IP device and a streaming from a guest IP device. During signaling, the traffic processing element registers traffic address information such as RTP of each host IP device and guest IP device, and the RTP address processor processes the information, and the traffic processor uses the traffic address of the registered IP value. Redirection control system for streaming service, which performs traffic communication with each IP device and performs relay operation
The method of claim 1,

In the signaling process for a streaming service, a streaming service characterized in that an interface module based on a connection protocol of the control processing element (CPC) and an RTP address processor of the traffic processing element (TPC) are synchronized with each other during an ongoing session. Redirection Control System