KR20130040687A - Apparatus and method for controlling quality of service of wireless network - Google Patents

Abstract

PURPOSE: A service quality control device of a wireless network and a method thereof are provided to offer content with service quality optimized at a mobile terminal by searching a content node which provides the content to the mobile terminal. CONSTITUTION: A content node searching unit(210) receives a content request signal from a mobile terminal. The content node searching unit searches a content node providing optimized service quality to the mobile terminal. An information providing unit(230) provides the information of the searched content node to the mobile terminal. The content node searching unit searches a content node by using traffic state information, wired network topology information, the wired network connection information. [Reference numerals] (100) Resource allowable control device; (210) Content node searching unit; (220) Network resource setting unit; (230) Information providing unit;

Description

Apparatus and method for controlling quality of service of wireless network {APPARATUS AND METHOD FOR CONTROLLING QUALITY OF SERVICE OF WIRELESS NETWORK}

The present invention relates to an apparatus and a method for controlling a quality of service of a content provided to a mobile terminal in a wireless network. An apparatus and method for controlling a quality of service of a wireless network for providing content at a specified quality of service.

International Telecommunication Union-Telecommunication Standardization Sector (ITU-T) SG13 (Study Group 13) Q.19 has been promoting standardization of DSN (Distributed Service Networking) since January 2009 to provide distributed service networking. Is actively developing standards for DSN structure and detail structure functions.

DSN provides distributed services in the form of P2P or mesh to provide various multimedia services and applications. DSN forms an overlay network on the legacy Internet with NGN or management functions. At the ITU-T NGN-GSI September meeting, there was a comprehensive discussion of the detailed functions of the functions within the DSN structure, and the development of detailed standards for the detailed functions.

However, while the conventional DSN-based network system is a technology for controlling the quality of service based on a wired network, as the spread of smart devices increases, mobile terminals receiving content through a wireless network are increasing.

Accordingly, there is a demand for a method of controlling a quality of service according to a mobile terminal connected wirelessly.

The present invention provides an apparatus and method for searching for a content node to provide content to a mobile terminal and providing the content with a service quality optimized for the mobile terminal.

In addition, the present invention provides an apparatus and method for providing content with a service quality optimized to a mobile terminal when the mobile terminal is moved.

In addition, the present invention provides an apparatus and method for improving the quality of service when requesting the same content from a plurality of mobile terminals.

An apparatus for controlling a quality of service according to an embodiment of the present invention includes: a content node searching unit searching for a content node having an optimized service quality that can be provided to the mobile terminal when receiving a content request signal from the mobile terminal; And an information providing unit providing information on the searched content node to the mobile terminal.

The content node search unit of the apparatus for controlling a quality of service according to an embodiment of the present invention may search the content node using wired network connection information of the mobile terminal, wired network topology information and traffic state information adjacent to the mobile terminal.

The content node retrieval unit of the apparatus for controlling a quality of service according to an embodiment of the present invention, when the location of the mobile terminal is changed, wireless network connection information of the mobile terminal, wired network connection information of the mobile terminal, and wired network topology information adjacent to the mobile terminal. And the traffic state information can be used to re-discover the content node.

A wireless network system according to an embodiment of the present invention, when receiving a content request signal from the mobile terminal, the service quality control device for providing the mobile terminal with information of the content node optimized service quality available to the mobile terminal; And a resource admission control device for reserving wired and wireless network resources between the mobile terminal and the content node.

The wireless network system according to an embodiment of the present invention further includes a network control device for managing a network connection, wherein the service quality control device includes a wired network connection information and a resource admission control device of a mobile terminal received from the network control device. The content node may be searched using wired network topology information and traffic state information adjacent to the mobile terminal received from the mobile terminal.

The wireless network system according to an embodiment of the present invention transmits the content request signal received from the mobile terminal to the apparatus for controlling the quality of service, and when the mobile terminal moves, at least the content node stops providing content to the mobile terminal. It may further include one control node.

The content node of the wireless network system according to an embodiment of the present invention may provide content using wired / wireless network resources reserved to the connected mobile terminal according to the information of the content node.

The wireless network system according to an embodiment of the present invention further includes a mobility management device for managing the information according to the movement of the mobile terminal, the service quality control device, when the mobile terminal is moved, received from the mobility management device The content node may be re-discovered using the wireless network connection information of the mobile terminal, the wired network connection information of the mobile terminal, wired network topology information and traffic state information adjacent to the mobile terminal received from the resource admission control device.

When a plurality of mobile terminals transmit a content request signal for the same content, the wireless network system according to an embodiment of the present invention connects to the content node according to the information of the content node and receives the content from the content node. The mobile control node may further include a multicasting to the mobile terminal of the.

According to an aspect of the present invention, there is provided a method of controlling a quality of service, the method comprising: receiving a content request signal from a mobile terminal, searching for a content node having an optimized quality of service available to the mobile terminal; And providing information on the found content node to the mobile terminal.

According to an embodiment of the present invention, by searching for a content node to provide content to a mobile terminal using wired network connection information of the mobile terminal, wired network topology information adjacent to the mobile terminal, and traffic state information, the mobile terminal is optimized for the mobile terminal. Content can be provided with a quality of service.

According to an embodiment of the present invention, when the mobile terminal moves, the mobile terminal moves using wireless network connection information of the mobile terminal, wired network connection information of the mobile terminal, wired network topology information adjacent to the mobile terminal, and traffic state information. By searching for a content node to provide content to the terminal, the content may be provided with a service quality optimized for the mobile terminal.

In addition, according to an embodiment of the present invention, when a plurality of mobile terminals request the same content, the base station accesses the content node, receives the content, and provides the content to the mobile terminals by multicasting, thereby improving the quality of service. You can.

1 is a diagram illustrating a wireless network according to an embodiment of the present invention.
2 is a block diagram illustrating an apparatus for controlling service quality according to an embodiment of the present invention.
3 is an example of a process in which a mobile terminal receives content in a wired / wireless network according to an embodiment of the present invention.
4 is an example of a process of receiving content when a mobile terminal moves in a wired or wireless network according to an embodiment of the present invention.
5 is an example of a process in which a plurality of mobile terminals are provided with content in a wired or wireless network according to an embodiment of the present invention.
6 is a flowchart illustrating a service quality control method of a wireless network according to an embodiment of the present invention.
7 is a flowchart illustrating a method of receiving content when a mobile terminal moves in a wired or wireless network according to an embodiment of the present invention.
8 is a flowchart illustrating a method in which a plurality of mobile terminals receive content in a wired or wireless network according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The method of controlling quality of service of a wireless network according to an embodiment of the present invention may be performed by the apparatus for controlling quality of service of a wireless network.

1 is a diagram illustrating a wireless network according to an embodiment of the present invention.

In the wireless network according to an embodiment of the present invention, as shown in FIG. 1, the apparatus for controlling a quality of service 100, the network controller 120, the resource admission controller 130, the content node 140, and the mobility management apparatus 150, control node 160, and mobile control node 170.

The service quality control apparatus 100 may provide an optimal quality of service (QoS) when a DSN based service is to be provided in a wireless environment using the mobile terminal 110. 140, the information on the selected content node 140 may be provided to the mobile terminal. A detailed configuration of the service quality control apparatus 100 will be described in detail with reference to FIG. 2.

The network control device 120 may manage a connection of a wireless network with a network attachment control function (NACF). In this case, the network control device 120 generates wired network connection information based on the access location of the mobile terminal 110, the IP, and the preference of the user of the mobile terminal 110, and according to the request of the service quality control apparatus 100. Can provide.

The resource admission control device 130 may control a quality of service of the wireless network with a resource admission and control function (RACF). In this case, the resource admission control device 130 may manage wired network topology information and traffic state information adjacent to the mobile terminal 110 and provide the same according to a request of the service quality control device 100.

In addition, the resource admission control apparatus 130 moves by reserving wired and wireless network resources between the content node 140 and the mobile terminal 110 selected by the quality of service control apparatus 100 according to the request of the quality of service control apparatus 100. When the terminal 110 receives the content, the service quality may be increased.

The content node 140 may store the content and provide the content to the connected mobile terminal 110 according to the information of the content node received from the service quality control apparatus 100.

In this case, the content node 140 may provide content to the mobile terminal 110 using wired / wireless network resources reserved by the resource admission control device 130.

In addition, a plurality of content nodes 140 that provide the same content may exist, and the mobile terminal 110 may be located according to the location of the mobile terminal 110 or the topology and traffic of a network located between the mobile terminal 110 and the content node. Can provide content with different quality of service.

For example, a content node accessed by fewer users than a content node accessed by many users may provide the same content with high quality of service.

The mobility management device 150 may manage and control mobility of a wireless network with a mobility management and control function (MMCF). In this case, the mobility management device 150 may manage wireless network access information of the mobile terminal 110. In this case, the wireless network access information may include at least one of access type, attachment point information, L1 / L2 address, and support bitrates.

In addition, when the mobile terminal 110 moves, the mobility management device 150 receives the wired network connection information from the network control device 120, and the wireless network connection information and the wireless network connection information according to the request of the service quality control device 100. By providing the received wired network connection information together, the configuration for transmitting the network connection information to the service quality control apparatus 100 can be unified.

The control node 160 may be at least one relay node that transmits the content request signal received from the mobile terminal 110 to the service quality control apparatus 100. In addition, when the mobile terminal 110 moves, the control node 160 may transmit a content transmission stop request signal to the content node 140 that was providing the content to the mobile terminal 110.

The mobile control node 170 may be wirelessly connected to the mobile terminal 110 to relay a content request signal, content node information, and content. In addition, when the plurality of mobile terminals 110 are provided with the same content, the mobile control node 170 may multicast the content provided from the content node 140 to the plurality of mobile terminals. In this case, the mobile control node 170 may be a base station.

In detail, when the plurality of mobile terminals 110 transmit the content request signal for the same content, the mobile control node 170 may receive the information of the content node from the service quality control apparatus 100 according to the content request signal. Can be. Next, the mobile control node 170 may access the content node according to the information of the received content node, receive content from the content node, and multicast to the plurality of mobile terminals.

2 is a block diagram illustrating an apparatus 100 for controlling a quality of service according to an embodiment of the present invention.

Referring to FIG. 2, the apparatus 100 for controlling service quality according to an embodiment of the present invention may include a content node search unit 210, a network resource setting unit 220, and an information providing unit 230. .

When the content node search unit 210 receives the content request signal from the mobile terminal 110, the content node search unit 210 may search for the content node 140 optimized for the service quality that can be provided to the mobile terminal 110.

At this time, the content node retrieval unit 210 receives the wired network connection information of the mobile terminal received from the network control device 120 and the wired network topology information and traffic state information adjacent to the mobile terminal received from the resource admission control device 130. To retrieve the content node 140.

In detail, the content node search unit 210 searches for a content node 140 capable of providing content corresponding to a content request signal, and when there are a plurality of searched content nodes 140, the wired network connection information of the mobile terminal and the mobile node. Using the wired network topology information and traffic state information adjacent to the terminal, the content node optimized for the quality of service that can be provided to the mobile terminal can be searched.

When the location of the mobile terminal 110 is changed, the content node search unit 210 controls the wireless network connection information of the mobile terminal, the wired network connection information of the mobile terminal, and resource permission control received from the mobility management device 150. The content node may be re-discovered using the wired network topology information and traffic state information adjacent to the mobile terminal received from the device 130.

The network resource setting unit 220 may set a wired or wireless network resource between the mobile terminal and the content node searched by the content node search unit 210.

In detail, when the content node search unit 210 searches for the content node 140 optimized for the service quality, the network resource setting unit 220 corresponds to the content node and the mobile terminal 110 in the resource admission control device 130. By transmitting a signal for requesting to reserve the wired and wireless network resources between the), the wired and wireless network resources between the mobile terminal 110 and the content node 140 can be set.

The information provider 230 may provide the mobile terminal 110 with information of the content node 140 searched by the content node search unit 210.

3 is an example of a process in which a mobile terminal receives content in a wired / wireless network according to an embodiment of the present invention.

The mobile terminal 110 may transmit a content request signal for requesting content selected by the user. In this case, the content request signal may be transmitted to the service quality control apparatus 100 through the control nodes (310).

When the service quality control apparatus 100 receives the content request signal, the service quality control apparatus 100 requests the network control apparatus 120 for wired network connection information of the mobile terminal 110 and transmits the wired network of the mobile terminal 110 according to the request. Connection information may be received (320).

When the service quality control apparatus 100 receives the content request signal, the service quality control apparatus 100 requests the resource admission control apparatus 130 for wired network topology information and traffic state information adjacent to the mobile terminal 110 and is transmitted according to the request. In operation 330, wired network topology information and traffic state information adjacent to 110 may be received.

Next, the apparatus 100 for controlling the quality of service searches for a content node 140 capable of providing content corresponding to a content request signal, and when there are a plurality of searched content nodes 140, the wired network connection information of the mobile terminal and movement. The content node B, which is a content node optimized for the quality of service available to the mobile terminal, may be searched using wired network topology information and traffic state information adjacent to the terminal.

In this case, the apparatus for controlling quality of service 100 may transmit a signal for requesting to reserve the wired / wireless network resource between the content node B and the mobile terminal 110 to the resource admission control apparatus 130 (340).

Next, the service quality control apparatus 100 may transmit the information of the content node B to the mobile terminal through the control nodes (350).

Next, the mobile terminal 110 may access the content node B according to the received information of the content node B (360).

Finally, the content node B may provide the content having high quality of service by providing the content to the mobile terminal 110 by using the wired / wireless network resource reserved by the resource admission control apparatus 130 (370).

4 is an example of a process of receiving content when a mobile terminal moves in a wired or wireless network according to an embodiment of the present invention.

FIG. 4 illustrates an exemplary embodiment in which the mobile terminal 110 moves while the content is provided according to FIG. 3 (400). The mobile terminal 110 provides content having a high quality of service according to the position where the mobile terminal 110 moves.

As illustrated in FIG. 4, when the mobile terminal 110 moves while receiving content (400), the mobile terminal 110 may retransmit the content request signal (410). In addition, when the mobile terminal 110 moves, the mobility management device 150 may receive wired network connection information from the network control device 120 (401).

In this case, the control node B receiving the content request signal may request the profile information of the content, which has been provided to the mobile terminal, to the control node C (420).

The control node C may transmit the profile information to the control node B according to the request (430). At this time, the control node C transmits a content transmission stop request signal to the content node B, which has been providing the content to the user, so that the content node B whose service quality is lowered in accordance with the movement of the mobile terminal 110 is transmitted to the mobile terminal 110. It can be blocked from providing.

Next, the control node B may transmit the content request signal received from the mobile terminal to the service quality control apparatus 100 through other control nodes (440).

When the service quality control apparatus 100 receives the content request signal again, the service quality control apparatus 100 requests the mobility management apparatus 150 for wired network access information and wireless network access information of the mobile terminal 110, and transmits the mobile terminal (s) transmitted according to the request. The wired network access information and the wireless network access information of 110 may be received (450).

When the service quality control apparatus 100 receives the content request signal again, the service quality control apparatus 100 requests the resource admission control apparatus 130 for wired network topology information and traffic state information adjacent to the mobile terminal 110 and is transmitted according to the request. Wired network topology information and traffic state information adjacent to 110 may be received (460).

Next, the service quality control apparatus 100 searches for a content node 140 capable of providing content corresponding to a content request signal, and when there are a plurality of searched content nodes 140, the wired network access information and wireless information of the mobile terminal. The content node A, which is a content node optimized for the quality of service available to the mobile terminal, may be searched using the network connection information, the wired network topology information adjacent to the mobile terminal, and the traffic state information.

In this case, the service quality control apparatus 100 may transmit a signal for requesting to reserve the wired / wireless network resource between the content node A and the mobile terminal 110 to the resource admission control apparatus 130 (470).

Next, the service quality control apparatus 100 may transmit information of the content node A to the mobile terminal through the control nodes (480).

Next, the mobile terminal 110 may access the content node A according to the received information of the content node A (490).

Finally, the content node A may provide content with high quality of service by providing the content to the mobile terminal 110 using the wired / wireless network resource reserved by the resource admission control apparatus 130 (495). In this case, the content node A may identify the amount of the content provided to the mobile terminal 110 using the profile information, and then transmit the next portion of the amount provided to the mobile terminal 110.

5 is an example of a process in which a plurality of mobile terminals are provided with content in a wired or wireless network according to an embodiment of the present invention.

5 illustrates an embodiment in which content is provided to mobile terminals when a plurality of mobile terminals receive the same content.

The mobile control node 170 may receive the same content request signal sent by the plurality of mobile terminals 110 and transmit the content request signal received through the control nodes to the service quality control apparatus 100 (510).

When the service quality control apparatus 100 receives the content request signal, the service quality control apparatus 100 requests the network control apparatus 120 for wired network connection information of the mobile terminal 110 and transmits the wired network of the mobile terminal 110 according to the request. The access information may be received (520).

When the service quality control apparatus 100 receives the content request signal, the service quality control apparatus 100 requests the resource admission control apparatus 130 for wired network topology information and traffic state information adjacent to the mobile terminal 110 and is transmitted according to the request. Wire network topology information and traffic state information adjacent to 110 may be received (530).

Next, the apparatus 100 for controlling the quality of service searches for a content node 140 capable of providing content corresponding to a content request signal, and when there are a plurality of searched content nodes 140, the wired network connection information of the mobile terminal and movement. The content node B, which is a content node optimized for the quality of service available to the mobile terminal, may be searched using wired network topology information and traffic state information adjacent to the terminal.

In this case, the apparatus for controlling quality of service 100 may transmit a signal for requesting to reserve the wired / wireless network resource between the content node B and the mobile terminal 110 to the resource admission control apparatus 130 (540).

Next, the service quality control apparatus 100 may transmit information of the content node B to the mobile terminal through the control nodes and the mobile control node 170 (550).

In this case, the mobile control node 170 may access the content node B according to the received information of the content node B (560).

Next, the mobile control node 170 may receive the content from the content node B using the wired / wireless network resource reserved by the resource admission control device 130 (570).

Finally, the mobile control node 170 may wirelessly multicast the received content to a plurality of mobile terminals. At this time, the mobile control node 170 is located in an area that cannot be multicasted, such as mobile terminal C, the mobile terminal receives the content by multicasting, such as mobile terminal B, by relaying the content (590), Can be provided.

That is, in the method of controlling quality of service according to the present invention, when a plurality of mobile terminals request the same content, multicasting to the mobile control node may provide content having high quality of service (370).

6 is a flowchart illustrating a service quality control method of a wireless network according to an embodiment of the present invention.

In operation S610, the apparatus for controlling quality of service 100 may receive a content request signal transmitted from the mobile terminal 110 through control nodes.

In operation S620, the apparatus for controlling quality of service 100 requests wired network connection information of the mobile terminal 110 from the network control apparatus 120 according to the content request signal received in operation S610, and transmits the request according to the request. Wired network connection information of the mobile terminal 110 can be received.

In operation S630, the apparatus for controlling quality of service 100 requests wired network topology information and traffic state information adjacent to the mobile terminal 110 from the resource admission control apparatus 130 according to the content request signal received in operation S610. In addition, wired network topology information and traffic state information adjacent to the mobile terminal 110 transmitted according to the request can be received.

In operation S640, the apparatus 100 for controlling the quality of service searches for the content node 140 capable of providing content corresponding to the content request signal received in operation S610, and when there are a plurality of searched content nodes 140, By using the wired network connection information of the mobile terminal received in step S620 and the wired network topology information and traffic state information adjacent to the mobile terminal received in step S630, a content node with optimized service quality that can be provided to the mobile terminal is selected. You can search.

In operation S650, the service quality control apparatus 100 transmits a signal to the resource admission control apparatus 130 to request a reservation of wired and wireless network resources between the content node retrieved in operation S640 and the mobile terminal 110. In operation S640, the wired / wireless network resource between the searched content node and the mobile terminal 110 may be set.

In operation S660, the apparatus for controlling quality of service 100 may transmit information of the content node retrieved in operation S640 to the mobile terminal through control nodes.

In operation S670, the mobile terminal 110 may access the content node and request content according to the information of the content node received in operation S660.

In step S680, the content node provides content to the mobile terminal 110 connected in step S670 by using the wired / wireless network resource reserved by the resource admission control device 130 in step S650, whereby the quality of service is improved. It can provide high content.

7 is a flowchart illustrating a method of receiving content when a mobile terminal moves in a wired or wireless network according to an embodiment of the present invention.

FIG. 7 is a flowchart illustrating a method of providing content having high quality of service according to a location where the mobile terminal 110 moves when the mobile terminal 110 moves while receiving content in step S680.

In operation S710, the mobile terminal 110 may receive content from the content node B. In this case, step S710 may be the same step as step S680 of FIG. 6.

In operation S720, the mobility management device 150 may check whether the mobile terminal 110 moves. In this case, when the mobile terminal 110 moves, the mobility management device 150 may receive wired network connection information from the network control device 120. In addition, the mobile terminal 110 may re-send the content request signal while moving.

In operation S730, the control node 160 may receive a content request signal retransmitted by the mobile terminal 110 in operation S720.

In operation S740, the control node 160 transmits a content transmission stop request signal to the content node, thereby indicating that the content node whose service quality is lowered in accordance with the movement of the mobile terminal 110 provides content to the mobile terminal 110. You can block. In addition, the control node 160 may transmit the content request signal received from the mobile terminal to the service quality control apparatus 100.

In operation S750, the service quality control apparatus 100 requests wired network access information and wireless network access information of the mobile terminal 110 from the mobility management device 150 according to the content request signal re-received in operation S740. In response to the request, wired network access information and wireless network access information of the mobile terminal 110 may be received.

In step S760, the apparatus for controlling quality of service 100 requests wired network topology information and traffic state information adjacent to the mobile terminal 110 from the resource admission control apparatus 130 according to the content request signal re-received in step S740. In addition, wired network topology information and traffic state information adjacent to the mobile terminal 110 transmitted according to the request can be received.

In operation S770, the apparatus for controlling quality of service 100 searches for a content node 140 capable of providing content corresponding to the content request signal re-received in operation S740, and when there are a plurality of searched content nodes 140, The quality of service available to the mobile terminal using the wired network connection information of the mobile terminal, the wireless network connection information, the wired network topology information adjacent to the mobile terminal received in step S760 and the traffic state information received in step S750 are obtained. You can rescan the optimized content nodes.

In this case, the apparatus 100 for controlling the quality of service may transmit a signal for requesting to reserve the wired / wireless network resource between the re-discovered content node and the mobile terminal 110 to the resource admission control apparatus 130.

In operation S780, the service quality control apparatus 100 may transmit information of the content node, which has been re-searched through the control nodes, to the mobile terminal.

In step S790, the mobile terminal 110 accesses the content node according to the received information of the content node, and the content node connects to the mobile terminal 110 using the wired / wireless network resource reserved by the resource admission control device 130. By providing the content, it is possible to provide the content with high service quality. In this case, the content node may identify the amount of content provided to the mobile terminal 110 using the profile information, and then transmit the next portion of the amount provided to the mobile terminal 110.

8 is a flowchart illustrating a method in which a plurality of mobile terminals receive content in a wired or wireless network according to an embodiment of the present invention.

In operation S810, the service quality control apparatus 100 may receive a content request signal transmitted through the mobile control node 170 and the control nodes from the mobile terminal 110.

In operation S820, the apparatus for controlling quality of service 100 requests wired network connection information of the mobile terminal 110 from the network control apparatus 120 according to the content request signal received in operation S810, and transmits the request according to the request. Wired network connection information of the mobile terminal 110 can be received.

In step S830, the apparatus for controlling quality of service 100 requests wired network topology information and traffic state information adjacent to the mobile terminal 110 from the resource admission control apparatus 130 according to the content request signal received in step S810. In addition, wired network topology information and traffic state information adjacent to the mobile terminal 110 transmitted according to the request can be received.

In operation S840, the apparatus 100 for controlling service quality searches for a content node 140 capable of providing content corresponding to the content request signal received in operation S810, and when there are a plurality of searched content nodes 140, By using the wired network access information of the mobile terminal received in step S820 and the wired network topology information and traffic state information adjacent to the mobile terminal received in step S830, a content node having optimized service quality that can be provided to the mobile terminal is selected. You can search.

In this case, the apparatus for controlling quality of service 100 transmits a signal for requesting to reserve the wired / wireless network resource between the content node retrieved in step S840 and the mobile terminal 110 to the resource admission control apparatus 130, in step S840. Wired / wireless network resources between the content node retrieved from < RTI ID = 0.0 > and < / RTI >

In operation S850, the apparatus 100 for controlling service quality may transmit information of the content node retrieved in operation S840 to the mobile terminal through the control nodes and the mobile control node 170.

In operation S860, the mobile control node 170 may check whether there are a plurality of mobile terminals that transmit the same content request signal.

The mobile control node 170 confirming that there are a plurality of mobile terminals transmitting the same content request signal in step S860, the content node received in the process of relaying information of the content node to the mobile terminal 110 in step S850. The content node can be accessed according to the information. Next, the mobile control node 170 may receive the content from the content node using the wired / wireless network resource reserved by the resource admission control device 130.

In operation S875, the mobile control node 170 may wirelessly multicast the content provided in operation S870 to a plurality of mobile terminals. In this case, the mobile control node 170 may provide the content by allowing the mobile terminal located in an area that cannot be multicasted to relay the content to the mobile terminal that has received the content through multicasting.

In operation S880, the mobile terminal 110 may access the content node and request content according to the information of the content node received in operation S850.

In operation S885, the content node may provide content with high quality of service by providing the content to the mobile terminal 110 accessed in operation S880 by using the wired / wireless network resource reserved by the resource admission control apparatus 130. Can be.

The present invention searches for a content node to provide content to a mobile terminal using wired network connection information of the mobile terminal, wired network topology information adjacent to the mobile terminal, and traffic state information, thereby providing content with a service quality optimized for the mobile terminal. can do.

In addition, when the mobile terminal moves, a content node to provide content to the mobile terminal using wireless network connection information of the mobile terminal, wired network connection information of the mobile terminal, wired network topology information adjacent to the mobile terminal, and traffic state information. By searching, the content can be provided with a service quality optimized for the mobile terminal.

When a plurality of mobile terminals request the same content, the base station accesses the content node, receives the content, and provides the content to the mobile terminals through multicasting, thereby improving the quality of service.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: service quality control device
110: mobile terminal
120: network control unit
130: resource admission control device
140: content node
150: mobility management device
160: control node
170: mobile control node

Claims (17)

A content node retrieval unit for retrieving a content node optimized for a quality of service available to the mobile terminal when receiving a content request signal from the mobile terminal; And
Information providing unit for providing information of the retrieved content node to the mobile terminal
Quality of service control apparatus for a wireless network comprising a. The method of claim 1,
The content node search unit,
And a content node is searched using wired network connection information of the mobile terminal, wired network topology information and traffic state information adjacent to the mobile terminal. The method of claim 1,
The content node search unit
An apparatus for controlling a quality of service of a wireless network, comprising searching for a content node having an optimized service quality that can be provided to a mobile terminal among a plurality of content nodes that provide content corresponding to a content request signal. The method of claim 1,
Network resource setting unit for setting a wired or wireless network resource between the mobile terminal and the retrieved content node
Further comprising:
The mobile terminal,
An apparatus for controlling quality of service of a wireless network, characterized in that content is received from a content node using a set wired or wireless network resource. The method of claim 1,
The content node search unit,
When the location of the mobile terminal is changed, the wireless network characterized in that the content node is re-discovered using the wireless network connection information of the mobile terminal, wired network connection information of the mobile terminal, wired network topology information adjacent to the mobile terminal, and traffic state information. Quality of Service Control Unit. A service quality control device for providing the mobile terminal with information of a content node whose quality of service that can be provided to the mobile terminal is optimized when the content request signal is received from the mobile terminal;
Resource admission control device for reserving wired and wireless network resources between a mobile terminal and the content node
Wireless network system comprising a. The method according to claim 6,
Further comprising a network control device for managing network access,
The service quality control device,
And searching for the content node using wired network access information of the mobile terminal received from the network control apparatus, wired network topology information and traffic state information adjacent to the mobile terminal received from the resource admission control apparatus. The method according to claim 6,
At least one control node that transmits a content request signal received from the mobile terminal to the apparatus for controlling a quality of service and stops providing content to the content node when the mobile terminal moves.
Wireless network system further comprises. The method according to claim 6,
The content node,
A wireless network system, comprising providing contents to a mobile terminal connected according to information of a content node using reserved wired and wireless network resources. The method according to claim 6,
Further comprising a mobility management device for managing information according to the movement of the mobile terminal,
The service quality control device,
When the mobile terminal moves, the wireless network connection information of the mobile terminal received from the mobility management device, the wired network connection information of the mobile terminal, and wired network topology information and traffic state information adjacent to the mobile terminal received from the resource admission control device are used. And re-search for the content node. The method of claim 10,
The resource admission control device,
Reserve wired and wireless network resources between the mobile terminal and the re-discovered content nodes,
The mobile terminal,
An apparatus for controlling a quality of service of a wireless network, wherein the apparatus is connected to a re-discovered content node and provided with content using reserved wired and wireless network resources. The method according to claim 6,
When a plurality of mobile terminals transmit a content request signal for the same content, the mobile node is connected to the content node according to the information of the content node, and the mobile control node receives the content from the content node and multicasts the content to the plurality of mobile terminals. Apparatus for controlling a quality of service of a wireless network, comprising: a. When the content request signal is received from the mobile terminal, searching for a content node having an optimized quality of service available to the mobile terminal; And
Providing information on the retrieved content node to the mobile terminal
Quality of service control method of a wireless network comprising a. The method of claim 13,
Searching for the content node,
And searching for a content node using wired network connection information of the mobile terminal, wired network topology information and traffic state information adjacent to the mobile terminal. The method of claim 13,
Searching for the content node,
A method for controlling a quality of service of a wireless network, comprising searching for a content node having an optimized service quality that can be provided to a mobile terminal among a plurality of content nodes that provide content corresponding to a content request signal. The method of claim 13,
Setting wired and wireless network resources between the mobile terminal and the retrieved content node
Further comprising:
The mobile terminal,
A method for controlling quality of service of a wireless network, characterized in that the content is received from a content node using the set wired or wireless network resource. The method of claim 13,
Relocating the content node using the wireless network connection information of the mobile terminal, the wired network connection information of the mobile terminal, the wired network topology information adjacent to the mobile terminal, and the traffic state information when the location of the mobile terminal is changed;
Quality of service control method of a wireless network further comprising.

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