KR20100055298A - Distributed storing method, management server, and multimedia streaming system based on regional preference for contents - Google Patents

Distributed storing method, management server, and multimedia streaming system based on regional preference for contents Download PDF

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Publication number
KR20100055298A
KR20100055298A KR1020080114299A KR20080114299A KR20100055298A KR 20100055298 A KR20100055298 A KR 20100055298A KR 1020080114299 A KR1020080114299 A KR 1020080114299A KR 20080114299 A KR20080114299 A KR 20080114299A KR 20100055298 A KR20100055298 A KR 20100055298A
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KR
South Korea
Prior art keywords
server
content
statistical information
wide area
contents
Prior art date
Application number
KR1020080114299A
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Korean (ko)
Inventor
김경환
장현민
전재식
Original Assignee
에스케이텔레콤 주식회사
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Priority to KR1020080114299A priority Critical patent/KR20100055298A/en
Publication of KR20100055298A publication Critical patent/KR20100055298A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server

Abstract

PURPOSE: A local preference dispersing method based on a regional preference, a management server and a multimedia streaming system for improving service quality of streaming are provided to efficiently use a limited storage resource of a system by differently setting up a disperse storage method of each contents. CONSTITUTION: A contents providing server(110) offers the multimedia contents. A contents original server(120) stores the contents. A plurality of local servers(140) is regionally unfolded the dispersion. A wide area server(130) is regarded as the higher layers of local servers. A management server collects the statistical information about the contents. The management server stores the contents in the local servers or the broad area servers.

Description

Distributed Storing Method, Management Server, and Multimedia Streaming System Based on Regional Preference for Contents}

The present invention relates to a streaming service, and more particularly, to a method, a management server, and a multimedia streaming system for distributing and storing a corresponding content in a server which is widely and regionally deployed based on regional preferences of the content.

With the development of internet technology, a streaming service that receives multimedia content such as video or animation through the internet in real time is being activated. Streaming refers to a technique of playing in real time while buffering a certain amount of the entire file, unlike a download method of playing after receiving all multimedia content files. Since the rest is continuously transmitted while playing back the buffered part, it is called 'streaming' because the transmitted data is treated like a continuous, continuous stream of water. Such streaming services include real time broadcast services or video on demand services.

Meanwhile, with the explosion of video content including user created contents (UCC), Internet traffic has been increasing rapidly in recent years. The growth rate of Internet bandwidth (supply) is not able to keep pace with the growth rate of Internet traffic (demand). In 2007 alone, global Internet traffic grew 75 percent, but Internet bandwidth grew only 44 percent.

As a way to solve the shortage of Internet bandwidth, CDN (content delivery network) technology is attracting attention. CDN technology is a technology that can utilize the internet network more efficiently by using active traffic distribution to increase average network utilization and lower peak traffic. According to the CDN technology, the content provider replicates the content to be provided to the client to a plurality of geographically dispersed edge servers, so that the client can receive the content from the optimal server upon request. do.

However, in a streaming system, distributing and storing all multimedia content to each of a plurality of edge servers causes a waste of limited storage resources (storage, etc.) of the system. Of course, a method of additionally installing storage resources may be proposed, but this will not only increase the cost of the content provider but also increase the maintenance cost of the system provider (CDN provider).

Therefore, the present invention is to solve the conventional problems, but to build a streaming system having a hierarchical distributed server structure, by varying the distributed storage method of each content according to the regional preferences for the content, the limited storage resources of the system efficiently It is to use as.

In order to achieve this object, the present invention provides a distributed storage method, a management server, and a multimedia streaming system based on regional preferences of contents.

Multimedia streaming system according to the present invention includes a content providing server for providing multimedia content and a content source server for receiving and storing the content, a plurality of regionally distributed regional server and the upper layer of the local server A management server which collects statistical information on the content from a wide area server, a local server and a wide area server, and distributes and stores the contents of the content source server in a local server and / or a wide area server according to regional preference based on the statistical information. Equipped.

In the multimedia streaming system of the present invention, the management server in detail, the statistical information collecting unit for collecting statistical information about the content from the local server and the wide area server, and based on the regional preferences of the content calculated from the statistical information Content management unit for distributing and storing the content of the content source server in the local server and / or wide area server.

The management server may further include a statistical information DB for storing statistical information, and the statistical information may be at least one of the total number of hits of the contents, the number of hits during a recent specific period, and the hit rate.

On the other hand, the distributed storage method of the content in the multimedia streaming system of the present invention, the first step of collecting statistical information about the content from the local server and the wide area server, and based on the regional preferences of the content calculated from the statistical information And distributing and storing the contents of the content source server in the local server and / or the wide area server.

The second step is a step of determining whether the region-specific preferences are all within the threshold range, and if the results are all within the threshold range, the content of the content source server is stored in the wide area server, and if not, the content of the content source server. Can be subdivided into steps for storing on a local server.

In addition, the second step is a step of determining whether the preferences for each region is all within the threshold range, and if the determination result is all within the threshold range, storing the content of the content source server in the wide area server, and both the determination results If not within the threshold range is determined the number of preferences for each region, if less than a predetermined number to store the content of the content source server in the local server and / or regional server of the region of high preference, if the predetermined number or more the threshold It may also be subdivided into the step of storing the content of the content source server in the local server of all the regions outside the range.

According to the present invention, the streaming system having a hierarchical distributed structure distributes and stores each content in a wide area server and / or a local server according to regional preferences of the content, thereby efficiently using the limited storage resources of the system, and thereby It is possible to improve the quality of service (QoS).

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. In describing the embodiments, descriptions of technical contents that are well known in the art to which the present invention pertains and are not directly related to the present invention will be omitted. This is to more clearly communicate without obscure the core of the present invention by omitting unnecessary description. In addition, like reference numerals designate like or corresponding elements throughout the accompanying drawings.

1 is a view showing a schematic configuration of a streaming system according to an embodiment of the present invention.

Referring to FIG. 1, the streaming system 100 includes a content providing server 110, a content source server 120, a wide area server 130, a local server 140, a management server 150, a user terminal 160, And an information communication network 170 that enables their data communication.

The content providing server 110 is a server operated by a content provider. The content providing server 110 is a server providing various multimedia or rich media contents such as a video file and an audio file.

The content provider can be divided into a person who actually uploads the content with the copyright of the content and a person who simply establishes a web server to relay the content provider and the user. For example, the person who uploads the content for the user who visits the pay movie site with the copyright of each movie in the pay movie site is the former, and the person who operates the pay movie site is the latter. The content providing server 110 is constructed in the former area, and the web server 112 is constructed in the latter area as shown in FIG. 1. This web server 112 is a server that provides a web site to which a user connects. However, the division of the content provider is only a way to help understanding of the present invention, and the present invention is not limited thereto, and the web server 112 may be a server operated by the content provider.

The content source server 120 is a server that uploads the original content from the content providing server 110. For reference, 'original' in the name of this component is given as a meaning for distinguishing from the content (replication content) to be replicated to the wide area server 130 or the local server 140 to be described below.

As described above, the wide area server 130 and the local server 140 may receive and store duplicate content of the original content of the content source server 120, and provide a streaming service of the content to the user terminal 160. Server. Wide area server 130 functions as a parent server for multiple regional servers 140. That is, the wide area server 130 and the plurality of regional servers 140 have a hierarchical distributed structure, and the wide area server 130 has a large number of wide area servers 140. These servers 130 and 140 may include respective backup servers for fail-over tolerance and load balancing.

On the other hand, the management server 150 of the present embodiment generates a regional preference of each content from the statistical information for each content collected from the content source server 120, the wide area server 130 and the local server 140, based on the content of the content Distributed to the wide area server 140 and the regional server 150. As known statistical information for each content, the total hit count for each content, the number of hits during a recent specific period, the hit rate, and the like may be used.

As shown in FIG. 2, the management server 150 includes a statistical information collecting unit 152, a statistical information DB 154, and a content managing unit 156.

As described above, the statistical information collecting unit 152 collects statistical information for each content from the wide area server 140 and the local server 150 and stores the statistical information for each content in the statistical information DB 154.

The content manager 156 generates regional preferences for each content by using the statistical information for each content of the statistical information DB 154, and generates the corresponding content according to the generated preferences in the wide area server 140 and / or the local server 150. Store in distributed. Distributed storage according to regional preferences will be described in more detail with reference to Table 1 below.

I II III IV V Critical range Storage server Content A 15 12 19 16 14 10-20 Wide area server Content B 29 57 18 33 41 20-35 1) Local server in region II
2) Regional servers in II and V regions Content C 25 29 14 36 22 10-30 1) Local server in region IV
2) Regional server and regional server in region IV

First of all, for convenience of description, three contents (A, B, C), an area where these contents are distributed and stored, and five regional servers (I, II, III, IV, V) arranged in the region, and It is assumed that there is one wide area server at the top.

In such an environment, the content manager 156 stores the content A in the wide area server when the preferences of the content A in all regions are within the critical range. On the other hand, if there is an area where the regional preference for the content B is out of the critical range, the content B is stored in the local server of the region having a high preference. In Table 1, we can see that the preference for content B is above the critical range in regions II and V. In this case, the content B may be stored in the regional server of the region II having the highest preference, or the content B may be stored in the regional server of both the region II and the V. FIG. In addition, when the number of regions where the preference exceeds the critical range, such as the content C, is less than or equal to a certain number (one in the example of Table 1), the content C may be selected from the regional server of the region (IV) having the highest preference or the regional server. Can be stored on a wide area server.

In the regional preference based distributed storage, the illustrated preference values and threshold range values are merely examples for ease of understanding and are not intended to limit the present invention to these values.

As described above, if the content is distributed to the regional server 140 and the regional server 150 according to regional preferences, the storage efficiency such as storage and the like are not only prevented, but also the operational efficiency of the server is increased. As a result, quality of service (QoS) for users can be expected.

Meanwhile, the user terminal 160 requests the streaming service and the corresponding content from the content providing server 110 or the web server 112 via the information communication network 170, and requests the requested content from the wide area server 140 or the local server. An end user terminal provided from 150. The user terminal 160 includes a desktop, a laptop, a mobile phone capable of internet communication, a PDA, a smart phone, and various information communication devices corresponding thereto.

The information communication network 170 is an internet that enables data communication of the above-described components 110 to 160 and includes various wired and wireless networks.

Hereinafter, a content distribution method of the streaming system shown in FIG. 1 will be described with reference to FIG. 3. From the following description, the configuration and operation of the streaming system shown in FIG. 1 will be clearer.

In step S110, the content source server 120 receives original content to be distributed and distributed from the content providing server 110. Here, the content source server 120 may support a dedicated upload client application for easy upload of the content provider. The dedicated upload application may include a digital rights management packager (DRM package), and the content is uploaded after packaging, that is, encryption (DRM encoding). The original content received in step S110 is stored in a storage server (storage resource) such as storage, and the content source server 120 may build a backup server to prevent the loss of the stored original content due to a fail-over. have.

In step S120, the wide area server 130 and / or the local server 140 may transmit the original content uploaded by the management server 150, specifically, the content management unit 156 of the management server according to a predetermined initial distribution rule. ) Is the initial stage of deployment. According to an embodiment of the present invention, the management server 150 provides a management web page to which a content provider can access, whereby the content provider is a local server (local server) and / or in which the demand for the content is expected to be high. You can set up distribution rules to be stored on a wide area server, which is the upper tier of this regional server. According to the distribution rule set by the content provider, the content management unit 156 distributes copies of the original content (replication content) to wide area servers and / or local servers.

Meanwhile, in step S130, the statistical information collecting unit 152 of the management server 150 collects statistical information for each content from the wide area server 130 and the local server 140, and stores the statistical information for each content in the statistical information DB 154. . As described above, the statistical information may include at least one of the number of hits, the number of hits during the last specific period, and the hit rate.

Next, referring to step S140, the content manager 156 of the management server 150 calculates a region preference of each content based on statistical information for each content of step S130.

Subsequently, step S150 distributes and distributes each content to the wide area server 130 and / or the local server 140 according to the regional preference. Unlike the above step S120, this step may be understood as a step of distributing and re-distributing the initially distributed content according to regional preferences.

Hereinafter, the step S150 will be described in more detail with reference to FIG. 4. As shown, the content manager 156 determines whether the regional preferences of the content are all within the threshold range (step S151), and if so, stores the corresponding content in the wide area server 130 (step S152). The content is stored in the local server 140 (step S153).

FIG. 5 is a diagram illustrating a modified example of FIG. 4. In step S151, it is determined whether the regional preferences of the contents are all within a critical range. In this case, the corresponding contents are stored in the wide area server 130 as in step S152 described above. Otherwise, the content manager 156 again determines whether the number of preferences out of the threshold range is less than or equal to the predetermined number (step S154). As a result of the determination, in this case, the corresponding content is stored in the regional server 140 and / or the wide area server 130 of the region of high preference (step S155), otherwise the regional server 140 of all regions outside the critical range is not included. The content is stored in step S156.

As described above, the specification and the drawings have been described with respect to the preferred embodiments of the present invention, although specific terms are used, it is only used in a general sense to easily explain the technical details of the present invention and to help the understanding of the invention. It is not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

The present invention can be usefully used for various multimedia streaming services that appear in various forms such as video contents, online education, mass media such as movies, broadcasts, music, recording and live broadcast contents, and IPTV, including UCC.

1 is a view showing a schematic configuration of a streaming system according to an embodiment of the present invention.

2 is a diagram illustrating a detailed configuration of the management server shown in FIG.

3 is a flowchart illustrating a content distribution storage method of the streaming system illustrated in FIG. 1.

4 is a detailed flowchart of the content distribution storage step shown in FIG. 3.

FIG. 5 is another detailed flowchart of the content distribution storage step shown in FIG. 3.

<Description of main parts of drawing>

100: streaming system 110: content providing server

120: content source server 130: wide area server

140: local server 150: management server

152: statistical information collecting unit 154: statistical information DB

156: content management unit 160: a user terminal

170: information and communication network

Claims (9)

A content providing server for providing multimedia contents; A content source server for receiving and storing the content; A plurality of local servers distributed geographically; A wide area server that is a higher layer of the local server; And A management server that collects statistical information about the content from the local server and the wide area server, and stores and stores the contents of the content source server in the local server and / or wide area server according to regional preferences based on the statistical information; Multimedia streaming system comprising a. The method according to claim 1, The management server, A statistical information collecting unit which collects statistical information on content from the local server and the wide area server; And A content manager configured to distribute and store the content of the content source server in the local server and / or the wide area server based on the regional preference of the content calculated from the statistical information; Multimedia streaming system comprising a. The method according to claim 2, The management server, Statistical information DB for storing the statistical information; Multimedia streaming system further comprises. The method according to claim 1, The statistical information, And at least one of a total number of hits of the contents, a number of hits during a recent specific period, and a hit rate. Distribution of the content in a streaming system including a content providing server, a content source server receiving and storing multimedia content from the content providing server, a plurality of regionally distributed regional servers, and a wide area server that is a higher layer of the regional servers. A server that manages storage A statistical information collecting unit which collects statistical information on content from the local server and the wide area server; And A content manager configured to distribute and store the content of the content source server in the local server and / or the wide area server based on the regional preference of the content calculated from the statistical information; Management server comprising a. The method according to claim 5, Statistical information DB for storing the statistical information; Management server, characterized in that it further comprises. Distribution of the content in a streaming system including a content providing server, a content source server receiving and storing multimedia content from the content providing server, a plurality of regionally distributed regional servers, and a wide area server that is a higher layer of the regional servers. As a storage method, (a) collecting, by the management server, statistical information about content from the local server and the wide area server; And (b) the management server distributing and storing the content of the content source server in the local server and / or the wide area server based on the regional preference of the content calculated from the statistical information; Distributed storage method comprising a. The method of claim 7, In step (b), Determining, by the management server, whether the regional preferences are all within a threshold range; And Storing the contents of the content source server in a wide area server if all are within a threshold range, and otherwise storing the contents in a local server; Distributed storage method comprising a. The method of claim 7, In step (b), Determining, by the management server, whether the regional preferences are all within a threshold range; Storing the contents of the content source server in a wide area server if all are within a threshold range as a result of the determination; And As a result of the determination, if all are not within the threshold range, the number of preferences for each region outside the threshold range is determined. Storing the content of the content source server in a local server of all the regions that deviate from the threshold range if more than a predetermined number; Distributed storage method comprising a.
KR1020080114299A 2008-11-17 2008-11-17 Distributed storing method, management server, and multimedia streaming system based on regional preference for contents KR20100055298A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101398088B1 (en) * 2012-11-15 2014-06-02 (주)위메이드엔터테인먼트 Method for managing data in online game, a game server including data management system, and recording medium
CN108924118A (en) * 2018-06-27 2018-11-30 亚信科技（成都）有限公司 One kind hitting library behavioral value method and system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101398088B1 (en) * 2012-11-15 2014-06-02 (주)위메이드엔터테인먼트 Method for managing data in online game, a game server including data management system, and recording medium
CN108924118A (en) * 2018-06-27 2018-11-30 亚信科技（成都）有限公司 One kind hitting library behavioral value method and system
CN108924118B (en) * 2018-06-27 2021-07-02 亚信科技（成都）有限公司 Method and system for detecting database collision behavior

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