KR101402590B1 - Load balancing apparatus and method for network access management system of picture monitoring apparatus - Google Patents

Abstract

The present invention relates to a load distributing apparatus and method for a video surveillance apparatus connection management system, and more particularly, to a video surveillance apparatus and a video surveillance system which can appropriately distribute load of a video surveillance apparatus connection management system by using a hash technique without load measurement, Thereby improving the performance of the device connection management system.

Description

Technical Field [0001] The present invention relates to a load balancing apparatus and method for a video monitoring apparatus connection management system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load balancing technique, and more particularly, to a load balancing apparatus and method of a video monitoring apparatus connection management system.

In recent years, not only the general penetration rate of video security equipment has increased, but also the frequency of using the remote monitoring function of video security equipment in various devices (Smart Phone, Tablet PC, etc.) and various types of networks (3G, Wi-Fi, .

In such a variety of environments, various problems may arise when connecting the video security equipment to the network, and a 'video surveillance device access management system' for solving such problems is disclosed in Korean Patent Application No. 10-2012-0039928 filed by the present applicant 2012. 4. 17) proposed.

In the Korean Patent Application No. 10-2012-0039928 filed by the applicant of the present invention, the gateway service unit stores all information necessary for connection to the entire image acquisition apparatus registered in the connection management system in the interlocked database, And serves as a system entry point for processing periodically transmitted information update requests and access information requests to the image acquisition device transmitted by the video surveillance device.

In the structure in which all the image acquisition apparatuses are registered and the access information request processing is processed through one gateway service unit, all loads are concentrated on the gateway service unit. As the number of registered image acquisition apparatuses and the connection attempts of the video surveillance apparatus increases, Much system processing is required.

As mentioned above, since the gateway service department operates as an entry point of the video surveillance access management system, it is an important factor to improve the performance of the video surveillance access management system by appropriately distributing the load concentrated in the gateway service portion have.

Accordingly, the present inventor has been studying a technique for improving the performance of the video monitoring apparatus connection management system by distributing the load of the video monitoring apparatus connection management system.

Korean Patent Application No. 10-2012-0039928

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and has an object of providing a video surveillance apparatus and a video surveillance system capable of appropriately distributing a load of a video surveillance apparatus connection management system using a hash technique without a separate load measurement procedure for load sharing And an object of the present invention is to provide a dispersing apparatus and method.

According to one aspect of the present invention, there is provided an image capturing apparatus that stores network address information and network type information of an image capturing apparatus in a database and registers the same, A gateway service access information receiving unit for receiving gateway service access information from each gateway service unit, the load distributing unit of the video surveillance apparatus access management system including a plurality of gateway service units for providing connection related information to each gateway service unit; A gateway service list generation unit for assigning a series of gateway service numbers to gateway service units receiving the gateway service access information by the gateway service access information receiving unit and generating a gateway service list including the gateway service access information and the gateway service number; ; A hash information providing unit for providing hash information including the hash function and the gateway service list generated by the gateway service list generating unit to the image acquiring device or the video surveillance device requesting the hash information; And the like.

The present invention has a beneficial effect of improving the performance of a video surveillance apparatus connection management system by appropriately distributing the load of the video surveillance apparatus connection management system simply by using a hash technique without a separate load measurement procedure for load distribution.

1 is a network connection diagram of a video surveillance apparatus connection management system.
FIG. 2 is a block diagram showing the configuration of an embodiment of a load distributing apparatus of a video monitoring apparatus connection management system according to the present invention.
3 is a diagram illustrating an example of a gateway service list.
4 is a flowchart illustrating a configuration of an embodiment of a load balancing method in a video monitoring apparatus connection management system according to 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 of the present invention have been defined in consideration of the functions of the embodiments of the present invention and can be sufficiently modified according to the intentions and customs of the user or operator. It should be based on the contents of.

1 is a network connection diagram of a video monitoring apparatus connection management system. The video surveillance apparatus connection management system 100 is connected to a public IP network and manages the network connection of the video surveillance apparatus so that the video surveillance system of the video surveillance system can be easily connected to the image capturing apparatus without complicated setting of the user, A determination unit 110, and a plurality of gateway service units 120.

The network type determination unit 110 identifies a network type of at least one video monitoring apparatus and at least one video capturing apparatus. For example, the network type determination unit 110 may be configured to determine the network type of each video monitoring apparatus and each image capturing apparatus using STUN (Session Traversal Utilities for NAT).

STUN is a set of various standardized methods including network protocol definitions used for NAT (Network Address Translation) in programs for real-time voice / video / message chatting and various interactive IP communications.

The network types are "Open Internet" type, "Full cone NAT" type, "Port Restricted cone NAT" type, "IP Restricted cone NAT" type and UDP Hole Punching communication type in which UDP hole punching communication is possible between video surveillance device and image acquisition device The "UDP Blocked" type, the "Symmetric Firewall" type, and the "Symmetric NAT" type.

Each gateway service unit 120 acquires network address information of each video surveillance apparatus in real time, acquires network address information of the image capturing apparatus in real time or periodically, acquires network address information of the acquired image capturing apparatus, The network type information of the image capturing device captured by the image capturing device is stored in each database, and when the specific image capturing device is connected to the specific image capturing device, the network address information of the specific video surveillance device captured in real time, Related information to the video surveillance apparatus by referring to the network address information and the network type information of the acquisition apparatus.

In this case, the network address information may include a MAC address, an IP address, and a port number of the video surveillance apparatus and the specific video capturing apparatus.

On the other hand, the connection related information may include a connection method, connection information, and connection order. At this time, the connection method may be either TCP internal connection, TCP external connection, UDP hole punching connection or relay connection.

Meanwhile, the connection information may include an IP address and a port number, and the connection order may be a TCP internal connection, a TCP external connection, a UDP hole punching connection, or a relay connection. It can be a sequential attempt.

The video surveillance apparatus that has received the connection related information including the connection method, connection information, and connection order from the video surveillance apparatus connection management system 100 accesses the video capturing apparatus using the connection related information.

By implementing such a configuration, it is possible to allow the user to consider whether or not the NAT device exists by providing the connection related information including the connection method, the connection information, and the connection order so that the video surveillance device can be easily connected to the image acquisition device, It is not necessary to manually set the information relating to the network connection of the video surveillance apparatus to the image acquisition apparatus.

Meanwhile, the gateway service unit 120 may be configured to perform TCP internal connection or TCP external connection between the video surveillance apparatus and the image capturing apparatus.

On the other hand, the video surveillance apparatus connection management system 100 includes a UDP hole punching connection management unit 130 for managing UDP hole punching connection between the video surveillance apparatus and the video capturing apparatus, And a relay connection unit 140 for performing a Relay connection.

The video surveillance apparatus which has received the connection related information including the connection method, the connection information and the connection order accesses the image capturing apparatus according to the received connection method, connection information and connection order.

At this time, the received video surveillance device sequentially tries to perform TCP internal connection, TCP external connection, UDP hole punching connection, or relay connection in accordance with the connection method, connection information and connection order, or at least two connections among them simultaneously UDP hole punching connection management is performed through the UDP hole punching connection managing unit 130, and the relay connection is performed through the UDP hole punching connection managing unit 130. In addition, (Relay) connection is performed through the relay 140.

When the image acquisition device is registered by the gateway service unit 120, the gateway service unit 120 transmits the UDP hole punching connection operation to the UDP hole punching connection management unit 130 ) Information to the image acquisition device.

The image acquisition apparatus accesses the UDP hole punching connection management unit 130 using information for connection to the received UDP hole punching connection management unit 130. When the video surveillance apparatus inquires of the gateway service unit 120 to connect to the image acquisition apparatus, the gateway service unit 120 transmits information for accessing the UDP hole punching connection management unit 130 connected to the image acquisition apparatus to the video surveillance apparatus And the information for connection to the network type identification unit 110 are transmitted.

The video surveillance apparatus accesses the network type identification unit 110 using the information for connection to the network type identification unit 110 to obtain its own UDP hole information. The video surveillance apparatus accesses the UDP hole punching connection management unit 130 using the information for connection to the UDP hole punching connection management unit 130 connected to the image acquisition apparatus and transmits its UDP hole information, Request UDP hole information.

The image acquisition device accesses the network type determination unit 110 to acquire its UDP hole information, transmits its own UDP hole information to the UDP hole punching connection management unit 130, and transmits the UDP hole punching connection management unit 130 ) Request a connection start.

The network type determination unit 110 transmits the UDP hole information of the image acquisition device to the video surveillance apparatus and requests the UDP hole punching start. Then, the video surveillance apparatus and the image capturing apparatus start UDP hole punching with UDP hole information of each other.

When the image acquisition apparatus is registered by the gateway service unit 120, the gateway service unit 120 transmits information for connection to the UDP hole punching connection management unit 130 To the image acquisition device.

The image acquisition apparatus accesses the UDP hole punching connection management unit 130 using information for connection to the received UDP hole punching connection management unit 130. When the video surveillance apparatus inquires of the gateway service unit 120 to connect to the image acquisition apparatus, the gateway service unit 120 transmits information for accessing the UDP hole punching connection management unit 130 connected to the image acquisition apparatus to the video surveillance apparatus .

The video surveillance apparatus accesses the UDP hole punching connection management unit 130 using the information for connection to the UDP hole punching connection management unit 130 connected to the image acquisition apparatus and requests the relay connection. Then, the UDP hole punching connection management unit 130 transmits information for connection to the relay connection unit 140 to the video surveillance apparatus and the image acquisition apparatus, and requests a relay connection start request. The video surveillance apparatus and the image acquiring apparatus connect to the relay connection unit 140 using the information for connection to the relay connection unit 140 and start the relay connection.

Meanwhile, the video surveillance apparatus connection management system 100 may further include a load distributing apparatus 150. The load distributing apparatus 150 may perform a simple image surveillance using a hash technique without a separate load measurement process before the image acquiring apparatus is registered in the gateway service unit 120 or before the image surveillance apparatus requests the image acquiring apparatus connection request. And improves the performance of the video monitoring apparatus connection management system by adequately distributing the load of the apparatus connection management system.

FIG. 2 is a block diagram showing the configuration of an embodiment of a load distributing apparatus of a video monitoring apparatus connection management system according to the present invention. The load distributing apparatus 150 according to this embodiment includes a gateway service connection information receiving unit 151, a gateway service list generating unit 152, and a hash information providing unit 153.

The gateway service access information receiving unit 151 receives the gateway service access information from each gateway service unit 120. For example, the gateway service access information may include an IP address of the gateway service unit 120.

Each gateway service unit 120 on the video surveillance apparatus connection management system 100 can be added or deleted as needed, and thus the configuration of the gateway service unit 120 is continuously updated.

In order to appropriately distribute the loads of the video surveillance apparatus connection management system 100, the load distributor 150 receives gateway service connection information from each gateway service unit 120 on the video surveillance apparatus connection management system 100.

At this time, the gateway service access information receiving unit 151 may be configured to receive the gateway service access information from each gateway service unit 120 in real time when the hash information is requested from the image acquiring device or the video surveillance device to be described later.

The gateway service list generating unit 152 assigns a series of gateway service numbers to the gateway service units 120 receiving the gateway service access information by the gateway service access information receiving unit 151, And generates a gateway service list including the number.

For example, the gateway service list generation unit 152 increases the service service information 120 by 1 in order from the service access information reception unit 151 in the order that the gateway service access information is received, . ≪ / RTI >

3 is a diagram illustrating an example of a gateway service list. Referring to FIG. 3, gateway service numbers 0, 1 and 2 are assigned to the three gateway service units GS1, GS2 and GS3, respectively, and the IP addresses of the gateway service units are mapped to the respective gateway service numbers .

The hash information providing unit 153 provides the hash information including the hash function and the gateway service list generated by the gateway service list generating unit 152 to the image acquiring device or the video surveillance device requesting the hash information. In this case, the hash function is a function for generating a unique numerical value by using the unique device name of the image acquisition device itself or the image acquisition device to which the image surveillance device is connected as an input seed.

The video surveillance apparatus that desires to request access to the image acquisition apparatus to the image acquisition apparatus or gateway service unit 120 desiring to register in the gateway service unit 120 first requests hash information from the load distribution apparatus 150, The hash information providing unit 153 of the load distributing apparatus 150 provides the hash information including the hash function and the gateway service list to the image acquiring apparatus or the video surveillance apparatus which has requested the hash information.

Then, the image acquiring device or the image surveillance device receiving the hash information including the hash function and the gateway service list acquires the hash value by calculating the hash function by inputting the device name of the image acquiring device as an input seed. At this time, the unique device names of the image acquiring device that the image acquiring device itself or the image acquiring device that the image surveillance device desires to access are converted into unique numerical values, respectively, by the hash function, and a hash value is acquired.

Then, the image acquisition device or the video surveillance device selects one gateway service number from the gateway service list using the obtained hash value. At this time, the image acquiring device or the video surveillance device may be configured to select the gateway service number corresponding to the remainder of the remaining values and the quotient obtained by dividing the hash value by the number of gateway services included in the gateway service list.

For example, if the number of gateway services included in the gateway service list is 3, the device name of the image capturing apparatus that has received the hash information is 'dvr1', and the hash value obtained by the hash function with 'dvr1' as the input seed is 100 , 100 divided by 3, the share 33, and the remaining 1, so 1 is selected as the gateway service number.

Then, the image acquisition device or the video surveillance device requests registration or inquiry to the gateway service part using the gateway service access information corresponding to the selected gateway service number.

For example, if 1 is selected as the gateway service number, the image acquisition device or the video surveillance device searches the gateway service list as shown in FIG. 3 and obtains the gateway service IP address mapped to the gateway service number 1 as gateway service access information And requests registration or inquiry to the acquired IP address of the gateway service.

In this case, the registration request means that the image acquisition device requests registration of itself with the gateway service unit, and the query request means that the image monitoring device queries the connection information for connection to the image acquisition device. Hereinafter, the process of connecting the video surveillance apparatus to the image capturing apparatus will be described with reference to FIG.

Since the conventional load balancing technique measures the load of each of a plurality of gateway service units and shares the load with each gateway service unit according to the measured load level, it takes a complicated and time-consuming process. However, It is possible to distribute the load appropriately to a plurality of gateway service units simply.

Thus, according to the present invention, before the image acquisition apparatus is registered in the gateway service unit 120 or before the image monitoring apparatus requests information for connection to the image acquisition apparatus, It is possible to easily distribute the load of the video monitoring apparatus connection management system by using the hash technique without a separate load measurement process, thereby improving the performance of the video monitoring apparatus connection management system.

In addition, since the gateway service list is valid unless the configuration of the gateway service unit is changed by adding or deleting the gateway service unit, the present invention is not limited to the hash service received once by the image acquisition apparatus or the video surveillance apparatus, You can reuse functions and gateway service lists.

The image acquisition device and the video surveillance device are not always connected to the gateway service, and only connect to the gateway service when performing registration / query respectively. Since the redirection service is not always connected, when the configuration of the gateway service is changed, the image acquiring device and the video surveillance device are not immediately notified of the corresponding information but receive new information when the redirection service is subsequently accessed again.

Since the changeover time point can not be notified to the image acquisition device and the video surveillance device when the service configuration is changed, time information about when the hash information can be effectively used when the hash information is distributed is also included . Therefore, the hash information is reused within the valid time, and thereafter the hash information is newly requested and used.

The load balancing operation of the load balancer of the video surveillance apparatus connection management system according to the present invention as described above will be described with reference to FIG. 4 is a flowchart illustrating a configuration of an embodiment of a load balancing method in a video monitoring apparatus connection management system according to the present invention.

First, in the gateway service access information receiving step 410, the load balancing apparatus receives gateway service access information from each gateway service unit. For example, the gateway service access information may include an IP address of the gateway service part.

In this case, in the gateway service access information receiving step 410, when the load distributing apparatus requests the hash information from the image acquiring apparatus or the video surveillance apparatus, the load distributing apparatus can receive gateway service access information from each gateway service unit in real time.

Next, in the gateway service list generation step 420, the load balancing device assigns a series of gateway service numbers to the gateway service units receiving the gateway service access information by the gateway service access information receiving step 410, And generates a gateway service list including the information and the gateway service number. Since the gateway service numbering and the gateway service list have been described above, redundant explanation is omitted.

Then, in the hash information providing step 430, the load distributing apparatus includes the gateway service list generated by the hashing function and the gateway service list generating step 420 to the image acquiring device or the video surveillance device requesting the hash information And the hash information.

Then, in the hash value acquisition step 440, the image capture device or the video surveillance device receiving the hash information including the hash function and the gateway service list computes the hash function by inputting the device name of the image capture device, ≪ / RTI >

Next, in the gateway service number selection step 450, the image capture device or the video surveillance device selects one gateway service number from the gateway service list using the hash value obtained by the hash value acquisition step 440. [

At this time, in the gateway service number selection step 450, the image acquisition device or the video surveillance device divides the hash value by the number of gateway services included in the gateway service list and selects the gateway service number corresponding to the remainder of the remaining values .

Next, in the gateway service department access step 460, the image acquisition apparatus or the video surveillance apparatus registers or queries the corresponding gateway service department using the gateway service access information corresponding to the gateway service number selected by the gateway service number selection step 450 Lt; / RTI >

Thus, according to the present invention, before the image acquisition apparatus is registered in the gateway service unit or before the image monitoring apparatus requests information for connection to the image acquisition apparatus, The load can be appropriately distributed to a plurality of gateway service units simply by using the hash technique, and the performance of the video monitoring apparatus connection management system can be improved, so that the object of the present invention can be achieved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. .

The present invention is industrially applicable in the field of load sharing technology or its application field.

100: Video monitoring device connection management system
110: Network Type Identification Unit
120: gateway service section
130: UDP hole punching connection management section
140: Relay connection
150: load balancer
151: gateway service connection information receiver
152: gateway service list generation unit
153: Hash information provider

Claims (8)

A plurality of gateway service units for storing network address information and network type information of the image acquisition device in a database and registering them and providing connection related information to the image acquisition device when a specific image acquisition device registered with a specific image surveillance device is registered A load distributing apparatus of a monitoring device connection management system,
A gateway service access information receiving unit for receiving gateway service access information from each gateway service unit;
A gateway service list generation unit for assigning a series of gateway service numbers to gateway service units receiving the gateway service access information by the gateway service access information receiving unit and generating a gateway service list including the gateway service access information and the gateway service number; ;
A hash information providing unit for providing hash information including the hash function and the gateway service list generated by the gateway service list generating unit to the image acquiring device or the video surveillance device requesting the hash information;
Wherein the video monitoring apparatus is a video monitoring apparatus. The method according to claim 1,
Gateway service connection information reception unit:
And receives the gateway service access information from each gateway service unit in real time when the hash information is requested from the image acquisition device or the video surveillance device. 3. The method according to claim 1 or 2,
An image acquisition device or a video surveillance device that receives hash information including a hash function and a gateway service list,
A hash function is calculated by using an input seed of the device name of the image acquisition device to obtain a hash value, a gateway service number is selected from the gateway service list using the obtained hash value, and a gateway corresponding to the selected gateway service number And requests registration or query to the corresponding gateway service unit using the service access information. The method of claim 3,
An image acquisition device or a video surveillance device:
And selects a gateway service number corresponding to the remaining one of the remaining values and a quotient obtained by dividing the hash value by the number of gateway services included in the gateway service list. A plurality of gateway service units for storing network address information and network type information of the image acquiring device in a database and registering them and providing connection related information to the image acquiring device when the specific image acquiring device is registered in which a specific image surveillance device is registered; A method for distributing a load of a video monitoring apparatus connection management system including a load distributing apparatus for distributing a load to a gateway service unit of a video monitoring apparatus,
A gateway service access information receiving step in which the load balancing apparatus receives gateway service access information from each gateway service unit;
A gateway for giving a series of gateway service numbers to gateway service units receiving gateway service access information by the load distributing apparatus receiving gateway service access information and generating a gateway service list including gateway service access information and gateway service numbers, A service list generation step;
A hash information providing step of providing a hash information including a gateway service list generated by a hash function and a gateway service list generating step to an image acquiring device or a video surveillance device that has requested the hash information;
Wherein the video monitoring apparatus is connected to the video monitoring apparatus. 6. The method of claim 5,
In the gateway service access information receiving step:
Wherein the load distributing unit receives gateway service access information from each gateway service unit in real time when hash information is requested from the image acquiring device or the video surveillance device. The method according to claim 5 or 6,
A load balancing method of video surveillance access management system:
The image capture device or the video surveillance device receiving the hash information including the hash function and the gateway service list provided by the hash information providing step calculates the hash value by calculating the hash function with the input device seed as the input device name of the image capture device, Acquiring a hash value;
A gateway service number selecting step of selecting one gateway service number from the gateway service list by using the hash value acquired by the image acquiring device or the video surveillance device by the hash value acquiring step;
A gateway service unit access step of requesting a registration or a query to the gateway service unit using the gateway service access information corresponding to the gateway service number selected by the image acquisition apparatus or the video surveillance apparatus by the gateway service number selection step;
Wherein the video monitoring apparatus further comprises: 8. The method of claim 7,
In the Select Gateway Service Number step:
Wherein the image acquisition device or the video surveillance device selects a gateway service number corresponding to the remainder of the remaining values and the quotient obtained by dividing the hash value by the number of gateway services included in the gateway service list, Way.

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