KR101867319B1 - Method for providing streaming service - Google Patents
Method for providing streaming service Download PDFInfo
- Publication number
- KR101867319B1 KR101867319B1 KR1020170022803A KR20170022803A KR101867319B1 KR 101867319 B1 KR101867319 B1 KR 101867319B1 KR 1020170022803 A KR1020170022803 A KR 1020170022803A KR 20170022803 A KR20170022803 A KR 20170022803A KR 101867319 B1 KR101867319 B1 KR 101867319B1
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- Prior art keywords
- bandwidth
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- streaming service
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Classifications
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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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2385—Channel allocation; Bandwidth allocation
-
- 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
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2402—Monitoring of the downstream path of the transmission network, e.g. bandwidth available
-
- 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
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
Abstract
Description
BACKGROUND OF THE
FIG. 1 is an explanatory diagram showing a method of providing a streaming service using a conventional streaming service providing system.
1, in the conventional streaming service providing system, the server 110 stores a segment (or chunk) file of a predetermined time unit such as 4 seconds to 6 seconds at various bit rates ( 500K, 1MB, 2MB, etc.), and also generates a manifest file (MPD) containing the segment information thus generated (a).
Then, the client player 120 requests the MPD file to the server (b) by using a URL provided in advance and transmits the MPD file to the server (c), analyzes the contents of the received MPD file (c) (D) a segment file of a suitable reproducible bit rate to the server 110, corresponding to the segment file. In response to this, the process of reproducing the segment file transmitted (e) from the server 110 is continuously repeated.
That is, the client player 120 selectively receives a segment file required for playback according to its own bit rate, according to its own network status, from the server 110. Therefore, the consideration of the network performance and the like of the stream server 110, which is required to transmit media data requested from a plurality of client players 120, can not be reflected at all.
Therefore, when a large amount of data is suddenly requested within the conditions of limited server equipment and network resources, there is a problem that quality of service for all client terminals is inevitably lowered due to lack of server resources.
Such a problem may cause an additional problem such that it is impossible to guarantee the quality of service of a user requiring a relatively high-quality image such as a premium user or a specific content.
In order to solve the above problems, the present invention provides a streaming service providing method for calculating and applying a real-time allocated bandwidth for each user group according to a preset bandwidth.
That is, even when the server reaches the limit of service due to a sudden rise in service demand, the present invention can provide a service quality maintenance for a specific user group such as a premium user, The present invention relates to a streaming service providing method.
To this end, the present invention provides a configuration for allowing a server to determine a final bit rate in consideration of a bit rate of a content requested from a client player, together with the overall service status of the stream server.
According to an aspect of the present invention, there is provided a streaming service providing method applied to a streaming service providing system, the method comprising: a first step in which a bandwidth distribution policy is set and applied; A second step of monitoring a real time service bandwidth for a provided streaming service; And a third step of applying the bandwidth allocation policy of the first step when it is determined that the service bandwidth has reached the limit through the bandwidth monitoring of the second step.
The third step may include: a fourth step of the client player determining a content bit rate through network status detection; And a fifth step in which the server determines the content bit rate by applying the bandwidth distribution policy of the first step so as to correspond to the content bit rate determined by the client player through the fourth step .
The bandwidth allocation policy of the first step may be configured to set a minimum and maximum bandwidth capacity for a criterion including at least one of user group information, content type information, and playback time information.
In addition, the bandwidth allocation policy of the first step may be configured to additionally set a reserve bandwidth for a criterion including at least one of user group information, content type information, and reproduction time information.
At this time, the preliminary bandwidth setting may be configured to set a predetermined ratio based on the entire bandwidth or to set a predetermined ratio based on the bandwidth of each class.
Meanwhile, the bandwidth distribution policy of the first stage applied to the streaming service providing method according to an embodiment of the present invention may include a processing policy for requesting a new service in a limit state.
According to the present invention, in the streaming service providing method applied to the streaming service providing system, the real-time allocated bandwidth can be calculated and applied for each user group according to the preset bandwidth.
This makes it possible to maintain service quality for a specific user group such as a premium user or a user group that must be guaranteed a bit rate above a certain reference value even when the server reaches the service limit due to a sudden rush of service requests And the like.
In addition, while maintaining compatibility with the existing MPEG-DASH standard player terminal, the present invention enables bandwidth allocation and data transmission calculated according to the requested bit rate content and the user and contents when there is a content request from an individual client And the like.
1 is an explanatory view showing a method of providing a streaming service using a conventional streaming service providing system.
2 is a flowchart illustrating a method of providing a streaming service according to an embodiment of the present invention.
3 is a reference diagram for explaining a streaming service providing method according to an embodiment of the present invention.
Hereinafter, specific embodiments according to the present invention will be described with reference to the accompanying drawings. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.
Parts having similar configurations and operations throughout the specification are denoted by the same reference numerals. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
In the following description of the embodiments, redundant descriptions and explanations of techniques obvious to those skilled in the art are omitted. Also, in the following description, when a section is referred to as "comprising " another element, it means that it may further include other elements in addition to the described element unless otherwise specifically stated.
Also, the terms "to", "to", "to", and "modules" in the specification mean units for processing at least one function or operation, and may be implemented by hardware or software or a combination of hardware and software . In addition, when a part is electrically connected to another part, it includes not only a case directly connected but also a case where the other parts are connected to each other in the middle.
Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component may be referred to as a first component, and similarly, the first component may also be referred to as a second component.
FIG. 2 is a flow chart for explaining a streaming service providing method according to an embodiment of the present invention, and FIG. 3 is a reference diagram for explaining a streaming service providing method according to an embodiment of the present invention.
2 and 3, a method of providing a streaming service according to an exemplary embodiment of the present invention includes a bandwidth distribution policy establishment step S210, a stream service provision step S220, a service bandwidth monitoring step S230, A step S250 of applying a session-specific bandwidth distribution policy so as to correspond to a threshold value reaching the threshold value (S240), and the like.
In detail, the server 110 generates (a) a multiple bit rate segment and an MPD, monitors whether a service bandwidth threshold is reached (b), sets a bandwidth distribution policy and calculates a serviceable maximum bandwidth (c) Can be performed. At this time, a
Subsequently, when the MPD request signal is transmitted from the player 120 (d), for example, the request redirection module 114 may receive the MPD request signal and deliver it (d ') to the server 110. When the MPD is transmitted (e), that is, the content data to be transmitted through the stream service providing step (S220), the player 120 detects the network status and determines the content bit rate (f) Can be performed.
When a request for a media segment corresponding to a content bit rate determined by the client is received (g), the server 110 requests (h) confirmation (i) to confirm whether the service bandwidth threshold has been reached Process can be performed. Also, step (j) may be performed such as determining whether the service bandwidth threshold is reached, applying a bandwidth distribution policy, determining a final content bit rate, and transmitting an HTTP Redirection message of the determined content URL.
After receiving the bit rate media segment request (k) determined by the server 110 from the player 120 so as to correspond thereto, the server 110 transmits the corresponding media segment (l) (M), and so on.
Hereinafter, a concrete example of the process of establishing a policy applicable to the streaming service providing method according to the embodiment of FIGS. 2 and 3 and the actual application example of the established policy will be described.
Bandwidth Distribution Policy Establishment Phase ( S210 ) Policy on allocation of bandwidth by service level
1. When a bandwidth limit situation occurs due to a congested service or the like provided from the server 110 and the service of the same bit rate can not be provided to all the service request sessions, It is possible to maximize the utility of the entire stream service by efficiently operating the limited resources by providing differentiated services according to the service objects by classifying the usable service bandwidth according to a certain standard.
2. Set the minimum / maximum service bandwidth capacity and reserve bandwidth for each of the following criteria (bandwidth can also be set as the ratio of the maximum bandwidth that can be serviced)
1) Grade by user type (such as paid users and free users)
2) Classification by content type (advertisement, movie, documentary, sports, news, entertainment, etc.)
3) Grade by playing time (less than 5 minutes, less than 60 minutes, more than 60 minutes)
4) Others (User Agent (Safari, Chrome, MSIE, VLC, Mobile), User IP area (Domestic,
3. When the limit of the serviceable bandwidth is reached, the bandwidth policy can be applied according to the bandwidth class to which the additional requested service belongs based on the ratio of the allocated bandwidth according to each bandwidth class.
4. Depending on the service provider, it may be possible to modify the service type, to further subdivide each reference level, or to operate it by applying a combination of the applicable standards.
Bandwidth Distribution Policy Establishment Phase ( S210 ), The bandwidth reserve ratio calculation policy
1. In case of service limitations, the preliminary bandwidth can be guaranteed in the following two ways to prevent the occurrence of a situation in which the service can not be physically performed before the service policy is determined.
1) Based on the total bandwidth
When setting the entire service band, which is a standard for setting the service band for each class, it is possible to set a certain ratio of the actual physically possible total bandwidth to the reserve band.
2) Bandwidth by grade
The total physically available bandwidth is the total available bandwidth, but the reserve ratio can be set for each reference class.
Limit Situation Policy on how to process new request service
1. When the 'bandwidth allocation policy for each service level' is applied due to the occurrence of the limitation of the allocated bandwidth in the service class, the following policy may be applied to the processing method for the newly requested request service.
1) Service provision (degradation of bitrate of existing service)
- allocating a new request service to the spare bandwidth generated by the service by lowering the bit rate of the currently serviced content belonging to the same class as the newly requested service, In case of reaching the limit condition that can not provide the whole requested service, it can be set to deny the additional service.
2) denial of service
- In order to maintain the quality of service for the existing service session, the request for the new service is denied. When the free bandwidth occurs due to the interruption of the existing service session, the new service can be provided only for the corresponding free bandwidth.
Hereinafter, the above-mentioned policies can be explained through practical examples through more specific examples.
For example, according to the policy application example regarding the above-mentioned bandwidth allocation, 'Bandwidth, reserve bandwidth setting criterion' follows 'User type rating', 'Bandwidth reserve ratio calculating policy' is 'Whole bandwidth criterion' A policy for processing a new request service is denoted as 'denial of service' will be described below.
First, when the bandwidth according to the user class is set as shown in <Table 1>, the service operation according to the service status according to each user class can be operated as shown in <Table 2>.
To describe in more detail the content of Table 2, first of all, the bandwidth status of the server receiving the new stream request among the services applying the policy # 1 'bandwidth allocation according to user class' ,
- Bandwidth by Rating
1 Grade Bandwidth: 80%, Grade 2 Bandwidth: 20%
If the new requested service class is the first class, since the maximum bandwidth of the corresponding class has already been exceeded, the denial of service can be executed according to the 'policy on new request service processing method in the limit state'.
However, if the new request service class is class 2, it is possible to reduce the
If the bandwidth situation differs according to case # 2 as follows:
- Bandwidth by Rating
If the requested service class is
In addition, the bandwidth allocation policy for each service level can be set, for example, as shown in <Table 3> to <Table 5>.
That is, Table 3 shows an example of the bandwidth allocation policy based on the class of each user type.
Table 4 shows an example of the bandwidth allocation policy according to the playback time grade.
movie
drama
-
60%
2
animation
documentary
20%
<Note 1>
3
20%
-
Table 5 shows an example of the bandwidth allocation policy for each content type. Here, the 'note 1' may be set according to a scheme of [total service bandwidth (bandwidth in use of 1 grade + bandwidth in use in grade 3)].
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. There is no doubt that it is within.
110: Server
112: Bandwidth monitoring module
114: Request Redirection module
120: Player
Claims (6)
A first step in which a bandwidth distribution policy is set and applied;
A second step of monitoring a real time service bandwidth for a provided streaming service;
A third step of applying the bandwidth allocation policy of the first step when it is determined that the service bandwidth has reached a limit through the bandwidth monitoring of the second step;
A fourth step of the client player determining a content bit rate through network status detection; And
And a fifth step of the stream server determining a final content bit rate by applying the bandwidth distribution policy of the first stage so as to correspond to the content bit rate determined by the client player,
The bandwidth distribution policy of the first step may be configured to apply a bandwidth reserve ratio calculation policy to a criterion including at least one of user group information, content type information and playback time information to set a certain ratio to a reserve bandwidth based on the entire bandwidth Or to set a certain ratio to the reserved bandwidth on a per bandwidth basis for each user class,
Wherein the third step applies the bandwidth distribution policy of the first step according to the bandwidth class of the new streaming service based on the ratio of the bandwidth of each user class.
Wherein the bandwidth allocation policy of the first step includes:
Wherein the minimum and maximum bandwidth capacities are set for a criterion including at least one of user group information, content type information, and reproduction time information.
Wherein the bandwidth allocation policy of the first step includes:
And a processing policy for a request for a new service in a limit state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170022803A KR101867319B1 (en) | 2017-02-21 | 2017-02-21 | Method for providing streaming service |
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| KR1020170022803A KR101867319B1 (en) | 2017-02-21 | 2017-02-21 | Method for providing streaming service |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102024551B1 (en) * | 2019-05-31 | 2019-09-25 | (주)온넷시스템즈코리아 | Cloud platforms for supporting real-time streaming service for heterogeneous application including AR, VR, XR and MR regardless of the hardware device option of user |
| US11472462B1 (en) | 2021-11-15 | 2022-10-18 | Bran-New International | Baby wagon with improved ease of use |
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