KR101474406B1 - Method and apparatus for controlling best bandwith between service network and mobile network - Google Patents

Abstract

The present invention relates to a method and apparatus for controlling and managing traffic to be transmitted between a service providing network and a wireless network in an optimal bandwidth considering content quality and network load.
According to the present invention, there is provided a method for managing traffic to be transmitted in an optimal bandwidth between a service providing network and a wireless network, the method comprising: (a) analyzing a content quality provided by the service providing network and a data receiving environment of the wireless network ; (b) calculating an optimal bandwidth range that can maintain the load of the wireless network below a predetermined reference value while maintaining the content quality at a predetermined reference value or more, based on the analysis result; (c) detecting traffic transmitted from the service providing network to the wireless network and determining whether the traffic is included in the calculated optimal bandwidth range; And (d) transmitting the traffic when the bandwidth is included in the optimal bandwidth range, and controlling the content quality provided in the service providing network or the traffic transmitted to the wireless network if the bandwidth is not within the optimal bandwidth range, A method for managing optimal bandwidth between a service providing network and a wireless network is disclosed.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a method and apparatus for optimally managing a bandwidth between a service providing network and a wireless network,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a bandwidth control or management method for traffic transmission according to a content service, and more particularly, to a method and apparatus for controlling and managing transmission of traffic with an optimal bandwidth considering content quality and network load between a service providing network and a wireless network And apparatus.

Recently, with the rapid development of electronics engineering and communication engineering, user terminals (PC, smart phone, mobile phone, notebook, etc.) with communication have various functions. That is, as the wired / wireless communication and data processing technology rapidly develops, people can use functions such as Internet access, video communication and video message transmission as well as voice communication using the communication terminal. In addition, due to rapid diffusion of communication terminals, a considerable amount of communication occurring in human relationships is performed through communication terminals, and communication terminals are becoming essential communication means in modern life.

As the utilization of the communication terminal increases, the data communication traffic provided through the mobile communication terminal is also rapidly increasing. In this situation, it is necessary to utilize limited radio resources more efficiently in order to provide data communication smoothly through a wireless network or a mobile communication network.

In addition, unlike wired networks, which are provided with a certain bandwidth and have high stability for each subscriber, due to the capacity limit of frequency resources and the inability to guarantee QoS in the air section in the case of wireless networks, There is a problem that the network quality such as delay, jitter, and packet loss rate deteriorates rapidly.

Especially, wireless service is mainly composed of delays and jitter-sensitive services such as mobile messenger, voice call, video call, streaming contents, etc., and deterioration of wireless network quality due to large capacity service traffic has a great influence on service satisfaction of wireless users. do.

For video content, which is a representative example of high-volume service traffic, recent studies have shown that video quality does not increase proportionally to the bandwidth provided, and that no matter how more bandwidth is provided, quality is no longer significantly improved. On the other hand, research has shown that network quality deteriorates exponentially even when network quality is seriously degraded and only 60% of the available bandwidth is occupied.

In order to improve the wireless service quality of the user, consideration should be given not only to the quality of the content itself but also how seamless the data transmission is. However, until now, there have been no systems and methods that satisfy these two standards and guarantee the best quality. Most content providers tend to think only about content quality without regard to network characteristics, and network operators that transmit them tend to think of network resources rather than content quality.

One of these technologies is disclosed in Korean Unexamined Patent Application Publication No. 2005-0067322 (name: service quality providing method and home network system using the same) managing information of each node and managing the entire network quality through this information, A configuration for limiting bandwidth is disclosed. However, this technology is also focused only on the network load management aspect as in the case of the above-mentioned network operator.

In this way, content providers are often putting a burden on networks due to excessive traffic, and network operators are considering only securing stable radio resources through traffic restriction and blocking because they are worried about consumption of network resources. Therefore, The research on the possibility of satisfying the requirements is required.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide an optimal bandwidth management method between a service providing network and a wireless network for efficiently allocating network resources, There is a purpose.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, objects and advantages of the present invention can be realized by the means and the combination shown in the appended claims.

According to another aspect of the present invention, there is provided a method for managing optimum bandwidth between a service providing network and a wireless network, Analyzing a content quality provided by the service providing network and a data receiving environment of the wireless network; (b) calculating an optimal bandwidth range that can maintain the load of the wireless network below a predetermined reference value while maintaining the content quality at a predetermined reference value or more, based on the analysis result; (c) detecting traffic transmitted from the service providing network to the wireless network and determining whether the traffic is included in the calculated optimal bandwidth range; And (d) transmitting the traffic when the bandwidth is included in the optimal bandwidth range, and controlling the content quality provided in the service providing network or the traffic transmitted to the wireless network if the bandwidth is not within the optimal bandwidth range, To be included in the management information.

According to another aspect of the present invention, there is provided an apparatus for managing traffic to be transmitted in an optimal bandwidth between a service providing network and a wireless network, the apparatus comprising: an analysis unit configured to analyze content quality provided by the service providing network and a data receiving environment of the wireless network; module; An optimal bandwidth calculation module for calculating an optimal bandwidth range in which a load of the wireless network can be maintained below a predetermined reference value while maintaining the content quality at a predetermined reference value or more based on the analysis result of the analysis module; A bandwidth discrimination module for detecting traffic transmitted from the service providing network to the wireless network and determining whether the traffic is included in an optimum bandwidth range calculated by the optimal bandwidth calculating module; And controlling the content quality provided by the service providing network or the traffic to be transmitted to the wireless network if the detected traffic is included in the optimal bandwidth range and if the detected bandwidth is not included in the optimal bandwidth range, And a bandwidth management module that manages the bandwidth management module to be included in the bandwidth management module.

According to another aspect of the present invention, there is provided a recording medium for managing traffic to be transmitted in an optimal bandwidth between a service providing network and a wireless network, the recording medium comprising: A procedure for analyzing a reception environment, a procedure for calculating an optimal bandwidth range in which a load of a wireless network can be maintained below a predetermined reference value while maintaining a content quality at a predetermined reference value or higher, based on the analysis result, And determining whether the traffic is included in the calculated optimum bandwidth range; and transmitting the traffic if it is included in the optimal bandwidth range, and if the optimal bandwidth range is not included in the optimal bandwidth range, Quality or traffic transmitted to the wireless network, There is provided a computer-readable recording medium recording a program for executing a procedure of managing to be included in an optimum bandwidth range.

According to the present invention, by analyzing a content situation in a service provision network and a resource situation in a wireless network, an optimal bandwidth at the time of traffic transmission is calculated, and when the traffic is included in the optimal bandwidth range based on the calculated optimal bandwidth, If the content is not included in the range, it is possible to control the quality of the content or control the traffic to be transmitted, thereby reducing the cost of network traffic and maintaining the quality of the content provided to the user over a certain level. To provide the effect of meeting the requirements of the present invention.

That is, the present invention provides an effect of improving the satisfaction of content quality of individual users and efficiently distributing network resources to reduce load and maintenance cost.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention below, And should not be construed as limiting.
1 is a diagram illustrating a network environment in which an optimal bandwidth management method between a service providing network and a wireless network is implemented according to an embodiment of the present invention.
FIG. 2 is a block diagram of an optimal bandwidth management apparatus between a service providing network and a wireless network according to an embodiment of the present invention. Referring to FIG.
3 is a flowchart illustrating a procedure of an optimal bandwidth management method between a service providing network and a wireless network according to an embodiment of the present invention.
4 is a diagram illustrating a procedure for comparing a bandwidth used and a calculated optimum bandwidth in a method of managing an optimal bandwidth between a service providing network and a wireless network according to an embodiment of the present invention and managing content quality and bandwidth.
5 is a graph illustrating quality satisfaction and load cost according to a bandwidth in an optimal bandwidth management method between a service providing network and a wireless network according to an exemplary embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a diagram illustrating a network environment in which an optimal bandwidth management method between a service providing network and a wireless network is implemented according to an embodiment of the present invention.

The configuration of a network environment in which the present invention is implemented will be described with reference to FIG.

Referring to FIG. 1, the network environment in which the present invention is implemented includes a service provision network N1, a wireless subscriber network N3, and a wireless backbone network N2 connecting the same.

The service providing network N1 includes a content server 200 and an edge node connecting the content server 200 and the wireless backbone network N2, And is connected to the backbone network N2. The service providing network N1 includes a wired network, an IP network, and an Internet network. The edge node may include a router.

The content server 200 plays a role of providing a content or a service to a terminal connected through a wired network or a wireless network. The content server 200 transmits and provides various types of services and contents according to the request of the user or the type of the service.

The wireless subscriber network N3 includes a wireless infrastructure such as a base station that is wirelessly connected to the mobile terminal 300 to provide a wireless communication service. Since the wireless subscriber network N3 needs to use a limited resource of wireless in comparison with the service providing network N1, it is important to manage radio resources such as bandwidth.

The wireless backbone network N2 transmits service or contents provided from the service providing network N1 to the wireless subscriber network N3 and provides the service or contents to the mobile terminal 300. [ The wireless backbone network N2 includes devices such as gateways and routers for transmitting data from a wired environment to a wireless environment and includes a bandwidth management device for controlling and managing the bandwidth of traffic in an optimal bandwidth when transmitting services or contents (100).

In particular, the bandwidth management apparatus 100 analyzes the content quality information in the service providing network N1 and the wireless environment of the wireless subscriber network N3, Calculates an optimum bandwidth range that can keep the load below a certain level, adjusts the bandwidth of the transmitted traffic based on the calculated optimum bandwidth, or adjusts the quality of the transmitted content. Through this, the traffic is transmitted as it is within the optimum bandwidth range considering both the content quality and the radio resource, and when the bandwidth falls outside the optimal bandwidth range, the content quality is controlled to be adjusted upward to satisfy the service satisfaction of the user If the optimal bandwidth is exceeded, the traffic is controlled so as to reduce the bandwidth, thereby reducing the load on the wireless network and preventing the maintenance cost from rising.

Hereinafter, the bandwidth management apparatus 100 will be described in more detail.

FIG. 2 is a block diagram of an optimal bandwidth management apparatus between a service providing network and a wireless network according to an embodiment of the present invention. Referring to FIG.

2, the optimal bandwidth management apparatus 100 includes an analysis module 110, an optimal bandwidth calculation module 120, a bandwidth determination module 130, and a bandwidth management module 140.

The analysis module 110 monitors the content information of the service traffic from the service providing network N1 and analyzes the network resource status and the usage status from the base station of the wireless subscriber network N3 and the mobile terminal 300 And analyzes the content quality and the wireless network environment.

The analysis module 110 is divided into a content analyzer for analyzing the quality of contents provided in the service providing network N1 and a network analyzer for analyzing the radio environment state of the wireless subscriber network N3. The content analyzing unit analyzes the content quality by collecting the attribute information of the content provided in the service providing network N1, the type information of the target terminal receiving the provided content, the traffic transmission method information of the provided content, and the like.

In more detail, the content analyzing unit synthesizes the resolution, the frame rate, the image type, and the bit rate of the service traffic or the content traffic among the collected information as described above, and calculates a relationship between users' utility ratios To the first calculation value. Also, the type and characteristics of the mobile terminal 300, which is an end use area of the service traffic, are analyzed, and the relationship between the terminal type and the bandwidth usage consumed in the analysis is calculated using the second calculation value. At the same time, the traffic transmission method is analyzed and the relationship between the user's utility level and the consumed bandwidth due to the traffic transmission method is calculated by the third operation value.

The network analyzer analyzes the network environment using information on the network resource status information, the network usage status information, the bandwidth share of the wireless subscriber network (N3), and the number of customers collected in the wireless subscriber network (N3).

For example, the network analyzer compiles information that may cause delay in network transmission among the collected information, and calculates a relation between a transmission delay factor and network efficiency as a fourth calculation value. In addition, the information that may cause loss in traffic transmission is synthesized and analyzed to calculate the relationship between the packet loss factor and the network efficiency as the fifth calculation value. Furthermore, the information that may impair the transmission stability is synthesized and analyzed to calculate the relationship between the transmission instability factors and the network efficiency as the sixth calculation value.

The optimal bandwidth calculation module 120 calculates a bandwidth of the wireless subscriber network N1 based on the quality of the content provided in the service providing network N1 and the wireless network environment in the wireless subscriber network N3, N3) of the traffic to be transmitted. The optimal bandwidth calculation module 120 forms a utility function of the user with respect to the content quality provided in the service providing network N1 through the operation value analyzed by the content analysis unit of the analysis module 110. [ Also, a cost function consumed in the wireless subscriber network (N3) is formed through the operation value analyzed by the network analyzer of the analysis module (110). An example of the utility function may be a function such as C = F (content, terminal, N / W transmission). As an example of the cost function, a function can be formed in the form of N = F (delay, packet loss, transmission stability).

The optimal bandwidth calculation module 120 calculates the optimal bandwidth range of the wireless network that produces the maximum utility at a minimum cost through a utility function and a cost function formed as in the above example.

The bandwidth determination module 130 detects traffic transmitted from the service providing network N1 to the wireless subscriber network N3 in real time and determines whether the traffic is included in the calculated optimum bandwidth range. The bandwidth discrimination module 130 detects the traffic transmitted in real time between the service providing network N1 and the wireless subscriber network N3 and then transmits the bandwidth of the corresponding traffic to the optimum bandwidth calculation module 120 Whether or not it is included in the bandwidth range, and determines the result according to the three conditions, such as when it is included in the optimum bandwidth range, when it exceeds the optimum bandwidth range, and when it is less than the optimum bandwidth range.

Here, in the case of being included in the optimum bandwidth range, it is an optimal condition when the content quality and the network part and the cost are taken into account. In the case of exceeding the optimum bandwidth range, the network part or the cost is increased. , It can be determined that the content quality is in a decline state.

The bandwidth management module 140 controls content and traffic transmitted from the service providing network N1 to the wireless subscriber network N3 to manage contents, traffic and bandwidth so that services can be performed with an optimal bandwidth .

The bandwidth management module 140 controls contents and traffic to be transmitted according to a determination result of the bandwidth determination module 130, and is classified into a traffic transmission unit, a quality management unit, and a bandwidth management unit.

If the content traffic transmitted as a result of the discrimination in the bandwidth discrimination module 130 is included in the optimal bandwidth range, the traffic transmission unit may transmit the traffic transmitted from the service providing network to the wireless subscriber network without performing any additional control processing Role.

As a result of the determination by the bandwidth determination module 130, when the traffic of the transmitted content is less than the optimum bandwidth range, the quality management unit controls or manages the quality of the content provided in the service providing network, . That is, when the bandwidth of the content to be transmitted is less than a predetermined level or less than the calculated optimum bandwidth, since the mobile terminal of the wireless subscriber line is in a quality state in which the content or service is not smoothly provided or smoothly used, To be maintained.

At this time, for example, a control policy for enhancing the content quality can be applied such as transcoding processing of the provided content, bandwidth enlargement adjustment processing, and priority setting processing.

Furthermore, the quality control unit may set a predetermined reference value even when the quality bandwidth is less than the optimum bandwidth, and control the transmission of the corresponding content traffic without any additional processing when the reference value is exceeded. This is a solution to the problem that the control process can be performed sensitively according to the optimum bandwidth range which changes in real time at the time of service operation. Even if it is less than the optimum bandwidth range, if it passes the content quality or bandwidth level set by the operator, It is possible to support the transmission processing of the traffic as it is in consideration of the load on the control processing.

The predetermined reference value for the content quality is set appropriately in consideration of the user's utility level (MOS: Mean Opinion Score) in consideration of the provided content, the service using side mobile terminal using the content, the transmission method on the network, .

As a result of the determination by the bandwidth determination module 130, if the traffic of the transmitted content exceeds the optimal bandwidth range, the bandwidth management unit controls the traffic to be transmitted to the wireless subscriber network or adjusts the bandwidth of the transmitted traffic, So as to prevent a rise in cost. That is, when the bandwidth of the transmitted traffic exceeds a certain level or exceeds the calculated optimal bandwidth, the load on the wireless subscriber network is increased or the network cost is increased. Therefore, do.

At this time, as control processing for reducing the bandwidth of the transmitted traffic, management policies such as throttling, blocking, and traffic shaping processing can be applied.

In addition, even if the bandwidth management unit exceeds the optimum bandwidth range, the bandwidth management unit may set a predetermined reference value acceptable in the network and control the traffic to be transmitted without any additional processing if the reference value is not exceeded. In this case as well, as a measure for the problem that the control process can be sensitively performed according to the optimum bandwidth range changing in real time at the time of service operation as described above, even if exceeding the optimum bandwidth range, , It is possible to support the transmission processing of the traffic as it is in consideration of the load on the control processing.

The predetermined reference value acceptable in the network is set by the operator in consideration of the network situation and the usage state of the wireless subscriber network.

3 is a flowchart illustrating a procedure of an optimal bandwidth management method between a service providing network and a wireless network according to an embodiment of the present invention.

Referring to FIG. 3, a procedure of an optimal bandwidth management method according to the present invention in a wireless backbone network will be described.

First, in the bandwidth management apparatus of the wireless backbone network, a process of analyzing the content quality in the service providing network and the wireless environment in the wireless subscriber network is performed. At this time, the content quality analysis is performed on the content attribute information, the type information of the service utilization target terminal, the traffic transmission method information, and the like. The wireless environment analysis analyzes the wireless network data reception environment, and includes transmission delay information, packet loss information, transmission stability information, and the like of the wireless network. (S11)

Next, a procedure is performed to calculate an optimal bandwidth range that can maintain the load of the wireless network below a predetermined reference value while maintaining the content quality at a predetermined reference value or more, based on the analyzed content quality information and network environment information. At this time, the analysis processing and calculation processing described above with reference to FIG. 2 can be used, and a detailed description thereof will be omitted. In addition, the optimal bandwidth range calculation is not performed one time but continuously, and can be calculated according to information analyzed in real time (S12)

After the optimal bandwidth is calculated, a monitoring procedure is performed to detect traffic transmitted from the service providing network to the wireless subscriber network and to confirm the bandwidth of use of the traffic. (S13)

As a result of the monitoring, the bandwidth information of the used traffic to be verified is compared with the calculated optimum bandwidth range information, and the process of determining which part of the optimal bandwidth is located is performed (S14)

As a result of comparison, when the bandwidth of the used traffic is included in the range of the optimal bandwidth, a procedure for transmitting the traffic transmitted without any control processing or management processing to the mobile terminal side of the wireless subscriber line is performed. That is, in this case, it can be determined that the network load and the cost are also processed to a certain level or less while maintaining the service quality or the content quality at a certain level or more.

On the other hand, when the bandwidth of the used traffic is located in an area outside the optimal bandwidth range, the quality of service or content quality in the service providing network or the bandwidth of traffic transmitted to the wireless subscriber network is controlled to improve the quality of the content A procedure for managing to prevent excessive bandwidth occupation in the wireless network is performed. Through this management procedure, it is possible to manage the traffic transmitted from the service providing network to the wireless subscriber network to be within the optimum bandwidth range (S16)

4 is a diagram illustrating a procedure for comparing a bandwidth used and a calculated optimum bandwidth in a method of managing an optimal bandwidth between a service providing network and a wireless network according to an embodiment of the present invention and managing content quality and bandwidth.

Referring to FIG. 4, a detailed procedure for performing quality control and bandwidth management according to the used bandwidth based on the optimum bandwidth calculated in the optimal bandwidth management method according to the present invention will be described.

First, as in the procedure of step S14 of FIG. 3, the calculated optimal bandwidth is compared with the identified usable bandwidth to determine which region of the current optimal bandwidth the used bandwidth is located.

At this time, the used bandwidth corresponds to one of the three cases. That is, in the first case, the used bandwidth is included in the calculated optimum bandwidth range. In the second case, the used bandwidth is out of the calculated optimum bandwidth range and is located in an area exceeding the optimum bandwidth. In the third case (S20), the use bandwidth is out of the calculated optimum bandwidth range and is located in an area less than the optimal bandwidth.

As a result of the comparison, if the used bandwidth is included in the first case, that is, within the optimum bandwidth range, the current used bandwidth is included in the optimal bandwidth range as described above, . (S15)

Next, as a result of comparison, if the used bandwidth exceeds the optimum bandwidth range, the current used bandwidth is not included in the optimal bandwidth range, and therefore, separate management processing is required. In this case, when traffic management and bandwidth management are performed immediately when the bandwidth is out of the optimum bandwidth range, unnecessary management processing may be performed. Therefore, a predetermined reference value acceptable in the network is set, and if it is satisfied, To be transmitted.

In the second case, a procedure for determining whether or not the predetermined network acceptance reference value is satisfied is performed (S30). The description of the setting of the network acceptance reference value has been described above, so it will be omitted.

As a result of the determination, if the set network acceptance criterion is satisfied, since the network is in an acceptable state, the traffic is directly transmitted without performing another management process (S15)

On the other hand, when the set network acceptance reference value is not satisfied, that is, when the used traffic bandwidth exceeds the allowable bandwidth reference value in the network, it is determined that the load on the network is increased or the cost is increased. (S35)

At this time, the bandwidth management process is omitted because it is described above, and excessive bandwidth occupancy can be lowered through the bandwidth management to be included in the optimum bandwidth range.

As a result of the bandwidth management processing, when the bandwidth of the used traffic is reduced and included in the optimum bandwidth range or the network acceptance reference value is satisfied, a procedure of transmitting the managed traffic is performed (S 15)

As a result of the comparison, if the used bandwidth is less than the optimal bandwidth, the current bandwidth is not included in the optimal bandwidth range, and another management process is also required. Even in this case, if the content quality reference value is set without satisfying the unconditional management processing, traffic can be transmitted without any additional processing even if the bandwidth is out of the optimum bandwidth range.

That is, in the second case, a procedure for determining whether or not the predetermined content quality reference value is satisfied is performed. (S40) The description of the setting of the content quality reference value has been described above and will be omitted.

As a result of the determination, if the set content quality criterion is satisfied, it is determined that the user is satisfied with the service quality level, and the traffic is transmitted without any further processing (S15)

On the other hand, when the set content quality standard value is not satisfied, that is, the content quality is judged to be inconvenient for the user to use the service, and the content quality management process is performed (S45)

Here, the content quality management process is omitted because it is described above, and it is possible to induce the user to satisfy a satisfactory reference value or to be included in the optimal bandwidth range through the content quality management.

As a result of the content quality management process, if the content is included in the optimum bandwidth range or the quality reference value is satisfied, the process of transmitting the content traffic is performed (S15)

In the present embodiment, when the used bandwidth is out of the calculated optimum bandwidth range, the management process is performed after determining whether the reference value is once again satisfied. However, the present invention is not limited to this, It goes without saying that management processing can be carried out when the optimum bandwidth is out of the range.

5 is a graph illustrating quality satisfaction and load cost according to a bandwidth in an optimal bandwidth management method between a service providing network and a wireless network according to an exemplary embodiment of the present invention.

As shown in the figure, when the bandwidth increases, the satisfaction level of the content quality increases, but the cost due to the network load also increases.

At this time, the content quality does not increase proportionally with the bandwidth increase but increases only to a certain level, and thereafter, the quality improvement effect is no longer achieved. In addition, the network load does not increase in size load and cost up to a certain level as the bandwidth increases, but when the bandwidth occupation occurs above a certain level, the network load and cost increase sharply.

Therefore, considering the characteristic of the graph as shown in the drawing, the optimum bandwidth a that can maintain the network load below a predetermined level while satisfying the content quality at a certain level or more is calculated.

In addition, a bandwidth reference value b capable of maintaining the content quality satisfaction at a certain level or more can be set, and a bandwidth reference value c at which the social cost due to the network load can be maintained at a certain level or less can also be set. This reference value is set to be located in an area outside the optimal bandwidth range.

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk).

While the specification contains many features, such features should not be construed as limiting the scope of the invention or the scope of the claims. In addition, the features described in the individual embodiments herein may be combined and implemented in a single embodiment. Conversely, various features described herein in a single embodiment may be implemented in various embodiments individually or in a suitable subcombination.

It is to be understood that, although the operations have been described in a particular order in the figures, it should be understood that such operations are performed in a particular order as shown, or that a series of sequential orders, or all described operations, . In some circumstances, multitasking and parallel processing may be advantageous. It should also be understood that the division of various system components in the above embodiments does not require such distinction in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

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 or scope of the invention. The present invention is not limited to the drawings.

100: bandwidth management device 200: content server
300:

Claims (15)

A method for managing traffic to be transmitted in an optimal bandwidth between a service providing network and a wireless network,
(a) calculating a user utility function for the content quality and a cost function required in the wireless network by analyzing the content quality provided by the service providing network and the data receiving environment of the wireless network;
(b) calculating an optimal bandwidth range based on the calculated utility function and the cost function;
(c) detecting traffic transmitted from the service providing network to the wireless network and determining whether the traffic is included in the calculated optimal bandwidth range; And
(d) if it is included in the optimal bandwidth range, transmits the traffic, and controls the content quality provided in the service providing network or the traffic to be transmitted to the wireless network, if it is not included in the optimal bandwidth range, And managing the optimal bandwidth between the service providing network and the wireless network. The method according to claim 1,
The step (d)
(1) transmitting traffic when the bandwidth of the transmitted traffic falls within the optimal bandwidth range;
(2) if the bandwidth of the traffic to be transmitted is smaller than the optimal bandwidth, controlling the content provided by the service providing network to increase the quality of the content; And
(3) managing the traffic to be transmitted to the wireless network to reduce the traffic transmission bandwidth when the bandwidth of the traffic to be transmitted is greater than the optimal bandwidth. An optimal bandwidth management method. 3. The method of claim 2,
The step (2)
The control unit determines whether or not the content provided by the service providing network satisfies a predetermined content quality criterion and transmits the traffic when the predetermined quality criterion is satisfied. If the content is not satisfied with the predetermined quality criterion, And managing the quality of content by using the service quality information. 3. The method of claim 2,
The step (3)
Determines whether or not traffic transmitted to the wireless network satisfies a predetermined criterion acceptable in the wireless network, and transmits traffic when a predetermined acceptance criterion is satisfied, and transmits the traffic when the predetermined acceptance criterion is not satisfied And controlling the traffic transmission bandwidth by controlling the traffic. The method of managing the optimal bandwidth between the service providing network and the wireless network. The method according to claim 1,
In the step (a)
The content quality analysis is performed through content attribute information provided by the service providing network, type information of a target terminal receiving content to be provided, and traffic transmission method information,
Wherein the analysis of the wireless network data reception environment is performed through transmission delay information, packet loss information, and transmission stability information of the wireless network. 3. The method of claim 2,
The step (2)
Wherein the control unit controls content to control quality through at least one of transcoding, bandwidth expansion adjustment, and priority setting for the content provided by the service providing network, or a combination thereof, An optimal bandwidth management method between service providing network and wireless network. 3. The method of claim 2,
The step (3)
Wherein the traffic is controlled to reduce the bandwidth by controlling the traffic through any one of throttling, blocking, and shaping of traffic transmitted to the wireless network, or a combined process thereof. An optimal bandwidth management method between service providing network and wireless network. The method according to claim 3 or 4,
Wherein the predetermined quality criterion and the predetermined acceptance criterion are set by a system operator. The method according to claim 1,
The steps (a) to (d)
Wherein the processing is performed in a wireless backbone network system connecting the service providing network and the wireless network. An apparatus for managing traffic to be transmitted in an optimal bandwidth between a service providing network and a wireless network,
An analysis module for analyzing a content quality provided in the service providing network and a data receiving environment of the wireless network;
Calculating an efficiency function of the user for the content quality and a cost function consumed in the wireless network based on the analysis result of the analysis module and calculating an optimal bandwidth range based on the utility function and the cost function, ;
A bandwidth discrimination module for detecting traffic transmitted from the service providing network to the wireless network and determining whether the traffic is included in an optimum bandwidth range calculated by the optimal bandwidth calculating module; And
If the detected traffic is included in the optimal bandwidth range, transmits the traffic, and if the detected bandwidth is not included in the optimal bandwidth range, controls the content quality provided by the service providing network or the traffic transmitted to the wireless network, And a bandwidth management module for managing the bandwidth managed by the bandwidth management module. 11. The method of claim 10,
The bandwidth management module includes:
A traffic transmission unit for transmitting traffic when the optimal bandwidth is included;
A quality management unit for controlling the contents provided by the service providing network to increase the quality of the contents when the content is smaller than the optimal bandwidth; And
And controlling the traffic to be transmitted to the wireless network to reduce the traffic transmission bandwidth when the bandwidth is greater than the optimal bandwidth. 12. The method of claim 11,
Wherein the quality management unit comprises:
Judges whether or not a predetermined content quality criterion is satisfied, transmits traffic when satisfied, manages quality when it is not satisfied,
The bandwidth management unit,
Determining whether a predetermined criterion acceptable in the wireless network satisfies a predetermined criterion, and transmitting the traffic when satisfied, and managing the bandwidth if the criterion is not satisfied. 11. The method of claim 10,
Wherein the analysis module comprises:
A content analyzer for monitoring content traffic information provided by the service providing network and analyzing content attribute information, type information of a target terminal receiving the content to be provided, and traffic transmission method information; And
And analyzing transmission delay information, packet loss information, and transmission stability information of the wireless network by receiving and monitoring information on the resource status of the wireless network. Inter-optimal bandwidth management device. 12. The method of claim 11,
Wherein the quality management unit comprises:
The content is controlled to increase the quality by controlling the contents through one or a combination of transcoding, bandwidth expansion adjustment, and priority setting for contents provided in the service providing network,
The bandwidth management unit,
Wherein the traffic is controlled to reduce the bandwidth by controlling the traffic through any one of throttling, blocking, and shaping of traffic transmitted to the wireless network, or a combined process thereof. An optimal bandwidth management device between a service providing network and a wireless network. A recording medium on which a procedure for managing traffic to be transmitted in an optimum bandwidth between a service providing network and a wireless network is recorded,
A procedure for calculating a user utility function for the content quality and a cost function consumed in the wireless network by analyzing a content quality provided by the service providing network and a data reception environment of the wireless network;
Calculating an optimal bandwidth range based on the calculated utility function and the cost function;
A process of detecting traffic transmitted from the service providing network to the wireless network and determining whether the traffic is included in the calculated optimum bandwidth range;
And transmits the traffic if it is included in the optimal bandwidth range, and controls the content quality provided in the service providing network or the traffic transmitted to the wireless network to be included in the optimal bandwidth range Readable recording medium having recorded thereon a program for executing a procedure for performing the above-described method.

Images