KR102058514B1 - Policy based path control system in multi-path environments - Google Patents

Abstract

The present invention relates to a policy-based route control system in a multi-path environment. More particularly, the present invention relates to the policy-based route control system in a multi-path environment which controls an optimal path using a preset policy for each service flow in a multi-path environment made of wired and wireless communication networks, thereby providing an optimal service.

Description

Policy based path control system in multi-path environments}

The present invention relates to a policy-based path control system in a multipath environment, and more particularly, using a preset policy for each service flow in a multipath environment consisting of a wired and wireless communication network. The present invention relates to a policy-based path control system in a multi-path environment that can provide an optimal service by controlling with an optimal path.

Conventionally, when network communication is performed using a transmission control protocol (TCP) in the user terminal means, only one interface among the multi-interfaces supported by the user terminal means is used. Recently, multi-path TCP (Multi-Path) has been used. Due to the development of TCP, MPTCP) technology, multiple interfaces that can be supported by the user terminal means can be used simultaneously in multiple paths, and the transmission speed of communication is improved by simultaneously using bandwidths of the respective paths.

In this end-to-end communication, in order to transmit multipath traffic using the MPTCP protocol, it is possible to support MPTCP technology in both the user terminal means and the content server. However, in a general situation, since the user terminal means or the content server does not support MPTCP technology in many cases, a proxy function for relaying MPTCP traffic transmitted through multiple paths is added.

Specifically, in the user terminal means or content server that does not support the MPTCP technology, in order to perform the operation of MPTCP, the user terminal means controls the traffic using the content server as the destination address, and sets the set destination address to the proxy server. Means for change (proxy agent module) are preferably added, and a proxy server is required that forwards multipath traffic to the content server.

The proxy agent module converts and transmits an MPTCP packet for transmitting a TCP packet (a packet addressed to a content server as a destination address for a specific service) generated by a user terminal through a multipath, and is divided into a multipath in a proxy server. The MPTCP packets are rearranged, merged, reconverted into normal TCP packets, and forwarded to the content server.

1 is a diagram illustrating a communication network configuration in a multipath environment having a conventional proxy structure.

As shown in FIG. 1, conventionally, user terminal means for generating traffic for using a specific service from a content server, a proxy server for receiving and merging packets transmitted in multiple paths from the user terminal means, and the user terminal means. It is preferably configured to include a content server that provides content at the request of.

In order for the user terminal means to communicate with a content server using a multi-path technology such as an MPTCP function, as described above, the user terminal means and the content server must be able to support the MPTCP technology. The server may not be able to apply this feature because it is not a mandatory support feature.

Thus, the user terminal means transmits the traffic to the content server in multiple paths through the proxy server.

In detail, the user terminal means generates a traffic using a pre-installed application as a content server as a destination address, and as described above in the proxy agent module, changes the destination address of the corresponding traffic to a proxy server. By splitting and generating a TCP packet into a subflow including an MPTCP header, a packet is transmitted by forming a subflow thin line using all the multipaths available between the user terminal means and the proxy server.

In addition, the proxy server receives, rearranges, and merges all packets including the MPTCP header transmitted from the user terminal unit, thereby generating a general TCP session that can be transmitted between the proxy server and the content server and transmitting the packet to the content server. Done.

In addition, the content server transmits a packet to the proxy server in order to provide the content at the request of the user terminal means, and the proxy server divides and generates traffic into a subflow by using the user terminal means as a destination address. By transmitting on the path, the actual communication is made.

At this time, in the user terminal means, when transmitting traffic in a multi-path using a multi-path protocol, as described above, the traffic is divided into sub-flows using all available paths to be delivered to the proxy server, Due to the characteristics of the same communication, if the quality of a particular network is poor or disconnected, TCP retransmmision or reordering problems occur, which affects the overall transmission speed and service.

That is, in the conventional multipath environment, the proxy structure is based on the quality of service (QoS), load balancing, and network price for each service flow (flow of traffic due to packet transmission generated by a service request from a user terminal means). There is a problem that an optimization service such as path selection is not guaranteed.

In this regard, Korean Patent Laid-Open Publication No. 10-2018-0080169 ("Base Station Device and QoS Control Method") realizes QoS control for each service flow without increasing complexity compared to the existing bearer-based QoS control method, and requests for service A method of improving the response time for a service request by enabling QoS control for a new service flow generated according to the present invention is disclosed.

Domestic Patent Publication No. 10-2018-0080169 (Published Date 2018.07.11.)

The present invention has been made to solve the problems of the prior art as described above, in the multi-path environment consisting of a wired and wireless communication network using an optimal policy for each service flow (optimal) To provide a policy-based path control system in a multi-path environment that can be controlled by a path.

Policy-based path control system in a multi-path environment according to an embodiment of the present invention, multi-path policy management server 100 for storing and managing the predetermined policy-related information for each service flow in a multi-path environment, specific services desired Is connected to at least one terminal 10 for generating traffic to the content server 20 of the specific service corresponding to the destination address, the policy request to the multi-path policy management server 100 Transmits a message and receives a policy reply message generated based on the policy related information from the multi-path policy management server 100, and transmits the traffic received from the terminal 10 to the policy response message. Multipath setting and bandwidth for each path are used to eliminate multipath communication through the multipath interface 210. Policy-based proxy agent means 200 and policy-based proxy server 300 for rearranging and merging the multi-path traffic transmitted through the policy-based proxy agent means 200 to transmit to the content server 20 It is preferable to be configured.

Furthermore, the policy response message may include at least one selected from among classification information for each service flow, bandwidth information for each service flow, and path information for each service flow, based on predetermined policy related information.

Further, the policy-based proxy agent means 200 communicates with the multi-path interface 210, the multi-path policy management server 100, and receives the policy response message to receive the policy response message. The classification management unit 230 receives the classification information for each service flow in the policy response message from the integrated management unit 220 and sets a policy for classifying the service flow for the traffic generated in the terminal 10, and the policy integration. Bandwidth management unit that receives the bandwidth information for each service flow of the policy response message from the management unit 220, sets the bandwidth for each transmission path, and controls the bandwidth when performing multipath communication through the multipath interface 210 ( 240, the path information for each service flow of the policy response message is received from the policy integration manager 220. According to a policy set by the path management unit 250 and the classification management unit 230 for setting the transmission path for each service flow, the flow separation unit 231 for classifying the service flow for the traffic generated by the terminal 10 And change the destination address of the traffic of the terminal 10 classified by the flow separation unit 231 to the policy-based proxy server 300 and multiply the transmission path set by the path management unit 250. It is desirable to perform multipath communication via the path interface 210.

Policy-based path control system in a multi-path environment according to another embodiment of the present invention, multi-path policy management server 1000 for storing and managing the predetermined policy-related information for each service flow in the multi-path environment, desired In order to receive a specific service, the traffic is generated using the content server 4000 of the specific service corresponding to the destination address, and a policy request message is sent to the multi-path policy management server 1000 using an installed application. Transmits and receives the policy reply message generated based on the policy related information from the multipath policy management server 1000, and generates the traffic using the policy response message and sets the multipath configuration. Set the bandwidth for the path to perform multipath communication through the multipath interface 2100. The policy-based user terminal means 2000 and a policy-based proxy server 3000 for rearranging and merging the multi-path traffic transmitted through the policy-based user terminal means 2000 and transmits to the content server 4000; It is preferred to be configured.

Furthermore, the policy response message may include at least one selected from among classification information for each service flow, bandwidth information for each service flow, and path information for each service flow, based on predetermined policy related information.

Further, the policy-based user terminal means 2000 communicates with the multi-path interface 2100, the multi-path policy management server 1000, and receives the policy response message to receive the policy response message, and the policy. The classification management unit 2300 and the policy integrated management unit 2200 which receive the classification information for each service flow among the policy response messages from the integrated management unit 2200 and set a policy for classifying the service flow for the generated traffic. Bandwidth management unit 2400 for controlling bandwidth when receiving multi-path communication through the multi-path interface 2100 by setting the bandwidth for each transmission path by receiving the bandwidth information for each service flow among the policy response messages. Receives the path information for each service flow in the policy response message from the management unit 2200, each service flow And a flow separation unit 2310 for classifying service flows for the generated traffic according to a policy set by the classification management unit 2300 and a path management unit 2500 for setting a respective transmission path. The destination address of the traffic classified at 2310 is changed to the policy-based proxy server 3000, and multi-path communication is performed through the multi-path interface 2100 using the transmission path set by the path manager 2500. It is desirable to.

The policy-based path control system in the multi-path environment of the present invention having the above configuration provides an optimal communication path for each service flow according to the policy in wired and wireless multi-path (LTE, WiFi, Ethernet, etc.) environments. It can be set, there is an advantage that can provide a stable transmission rate than the transmission rate of the multi-path structure of the conventional proxy structure.

In addition, by setting the optimal bandwidth for each service flow according to the policy (policy), there is an advantage that can provide the optimal service.

In addition, by using the optimal path for each service flow according to the policy (policy) unconditionally using all the paths available in the terminal, there is an advantage that can provide a load balancing function.

1 is a diagram illustrating a configuration of a multipath environment having a conventional proxy structure.
2 and 3 are diagrams illustrating a policy-based path control system in a multi-path environment according to an embodiment of the present invention.
4 and 5 are diagrams illustrating a policy-based path control system in a multi-path environment according to another embodiment of the present invention.

Hereinafter, a policy-based path control system in a multipath environment of the present invention will be described in detail with reference to the accompanying drawings. The drawings introduced below are provided as examples in order to sufficiently convey the spirit of the present invention to those skilled in the art. Accordingly, the present invention is not limited to the drawings presented below and may be embodied in other forms. Also, like reference numerals denote like elements throughout the specification.

In this case, unless there is another definition in the technical terms and scientific terms used, it has the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs, and the gist of the present invention in the following description and the accompanying drawings. Descriptions of well-known functions and configurations that may unnecessarily obscure are omitted.

In addition, a system refers to a collection of components including devices, instruments, means, and the like that are organized and regularly interact to perform the necessary functions.

The policy-based path control system in a multipath environment according to an embodiment of the present invention sets an optimal communication path for each service flow according to a policy in wired and wireless multipath (LTE, WiFi, Ethernet, etc.) environments. A control system that can be.

Recently, although the user terminal means and the content server gradually have the MPTCP function, the MPTCP function is not applied to all the user terminal means and the content server. Thus, the policy base in the multi-path environment according to an embodiment of the present invention. The path control system will be described in each embodiment by dividing the case where the MPTCP function is not applied to the user terminal means and the case where the MPTCP function is applied.

First embodiment (when there is no multi-path TCP (MPTCP) function of the user terminal means)

Policy-based path control system in a multi-path environment according to a first embodiment of the present invention is a multi-path policy management server 100, policy-based proxy agent means 200 and Preferably, the policy-based proxy server 300 is configured, and the multipath policy management server 100 is preferably viewed as a base station means for performing an operation of a multipath policy manager by the base station means. Since the agent means 200 also does not have an MPTCP function in the terminal 10 which is a user terminal means, it is preferable to perform an operation in the base station means to compensate for this.

Through this, the policy-based path control system in a multipath environment according to the first embodiment of the present invention, the terminal 10 does not have a function such as MPTCP, traffic transmission, bandwidth control, service flow control, multipath control Policy-based proxy agent means for performing a function 200, the policy-based proxy server for relaying the traffic of the user terminal 10 transmitted in a multi-path from the policy-based proxy agent means 200 to the content server 20 300, the content server 20 for providing content at the request of the user terminal 10, and a multipath policy management server 100 for storing and managing policy related information. Do.

Through the multipath policy management server 100, through the selective path control for each service flow, it is possible to provide an optimized service such as QoS (Quality of Service), bandwidth, load balancing, etc. for each service flow.

To learn more about each configuration,

The multipath policy management server 100 preferably stores and manages predetermined policy related information for each service flow in a multipath environment.

The policy-related information is preferably input in advance from an external administrator, and updated whenever a new path environment is established or whenever information of the path environment changes.

The policy based proxy agent means 200 is preferably connected to at least one user terminal 10.

At this time, the user terminal 10, as described above, in order to receive the desired specific service, it is preferable to generate the traffic designated as the destination address to the content server 20 that provides the specific service.

The policy-based proxy agent means 200 receives the traffic from the user terminal 10 that does not have a function such as MPTCP, and performs the bandwidth control, service flow control, path control function, etc. Transfer to the proxy server 300.

In detail, the policy-based proxy agent means 200 transmits a policy request message to the multipath policy management server 100 and according to the policy request message from the multipath policy management server 100. It is desirable to receive a policy reply message.

At this time, the policy response message is preferably generated based on the policy related information in the multipath policy management server 100, and selects among service flow classification information, service flow bandwidth information, and service flow path information. It is most preferable to include any one or more of the above.

In detail, the policy response message includes information for classification by service flow including IP address and port information of the content server, IP address and port information of the content server, and ID information for each service flow type (multipath policy management). Information for up / down bandwidth control for each service flow, including information defined in the server 100, information about a path to be used among a plurality of communication networks (transport networks), port information of a content server, and the like. It is most preferable to include information for path control for each service flow.

The policy-based proxy agent 200 uses the policy response message to control the bandwidth of each path for setting the path of the traffic of the user terminal 10 in a multi-path environment for each service flow and controlling the bandwidth of the user terminal. (It is most preferable to set MPTCP communication using the set bandwidth and the set path.

That is, the policy-based proxy agent 200 sets the multipath interface 210 by setting the multipath and the bandwidth for each path by using the policy response message for the traffic received from the user terminal 10. It is desirable to control multipath communication over.

To this end, the policy-based proxy agent means 200, as shown in Figure 2, multipath interface 210, policy integration management unit 220, classification management unit 230, bandwidth management unit 240, path management unit ( It is most preferably configured to include a 250) and the flow separator 231.

The multipath interface 210 most preferably determines a communication path when performing multipath communication by setting a bandwidth for a transmission path for each service flow.

The policy integrated management unit 220 may communicate with the multipath policy management server 100 to transmit the policy request message and to receive the policy response message accordingly.

The policy integrated management unit 220 may store and manage the received policy response message, and analyze and provide the policy response message according to a request.

The classification manager 230 receives classification information for each service flow in the policy response message from the policy integration manager 220 and sets a policy for classifying a service flow for traffic generated by the user terminal 10. It is desirable to.

Accordingly, it is most preferable that the flow separation unit 231 classify the service flows for the traffic generated by the user terminal 10 according to the policy set by the classification management unit 230.

The bandwidth manager 240 receives the bandwidth information for each service flow in the policy response message from the policy integration manager 220 and sets a policy for the bandwidth for each transmission path. Through this, when performing multipath communication through the multipath interface 210, it is preferable to set a bandwidth according to the multipath used.

The path manager 250 receives the path information for each service flow from the policy response message from the policy integration manager 220 and sets a policy for setting a transmission path for each service flow.

At this time, the path information for each service flow among the policy response messages received from the policy integration management unit 220 includes a network quality measurement element (RTT, Delay, etc.) value for each path, thereby providing an optimal path for each service flow. It is desirable to set a policy on selection.

To summarize the operation of the policy-based proxy agent means 200, continuous communication is performed through a session connection between the policy integrated management unit and the multipath policy management server 100.

In this process, the policy-based proxy agent means 200 transmits the policy request message to the multipath policy management server 100 and is included in the policy request message in the multipath policy management server 100. It is desirable to retrieve a preset policy based on the information.

Information about the found preset policy is transmitted to the policy-based proxy agent means 200 using the policy response message.

Through this, in the policy-based proxy agent means 200, by setting the policy for each service flow by using the policy response message received from the policy integration management unit 220, the policy for the optimal path selection for each service flow It is desirable to set.

The policy-based proxy agent means 200 of the multipath interface 210, policy integration management unit 220, classification management unit 230, bandwidth management unit 240, path management unit 250 and flow separation unit 231 It is preferable that the configurations are constituted by an MCU or the like which performs an operation on each terminal or one terminal, and the destination address of the traffic of the user terminal 10 classified by the flow separation unit 231 is the policy-based proxy server. Change to 300, it is preferable to perform the multi-path communication through the multi-path interface 210 to the transmission path set in accordance with the policy in the path manager 250. At this time, as described above, the multipath interface 210 is most preferably set by the bandwidth management unit 250, the bandwidth for each transmission path according to the policy.

Preferably, the policy-based proxy server 300 rearranges and merges multipath traffics of the user terminal 10 transmitted through the policy-based proxy agent means 200 and transmits them to the content server 20.

That is, the policy-based proxy server 300 converts the multipath traffic transmitted through the multipath interface 210 into a general TCP session and transmits it to the content server 20.

Through this, even if the user terminal 10 and the content server 20 does not provide a function such as MPTCP, multi-path communication through the policy-based proxy agent means 200 and the policy-based proxy server 300 is possible This solves the problems of conventional proxy-based multipath communication and provides optimized services such as QoS, bandwidth, and load balancing for each service flow.

In addition, the content server 20 transmits a packet according to the request (traffic) of the user terminal 10 to the policy-based proxy server 300, the policy-based proxy server 300 in the user terminal ( It is preferable to perform multipath communication by dividing and generating the traffic of the content server 20 into 10 as a destination address.

Of course, similar to the multipath communication when the traffic of the user terminal 10 is transmitted, the multipath interface (not shown) provided in the policy-based proxy server 300 to the traffic of the content server 20 The multipath traffic of the content server 20 transmitted to the policy-based proxy agent means 200 and transmitted through the multipath interface 210 of the policy-based proxy agent means 200 to a general TCP session. By transmitting to the user terminal 10, the final communication is made.

In other words, in the policy-based path control system in a multi-path environment according to the first embodiment of the present invention, in the policy-based proxy agent means 200, an application in which the policy integration manager 220 operates is initially operated. (Initial operation refers to a case in which an application is automatically executed at initial boot, or a new reset is performed due to an error or a failure.) Or, when a new user terminal 10 accesses, the multipath policy management server ( It is preferable to forward the policy request message to 100).

At this time, the policy request message is simply a message for the policy request and does not include other information.

Thereafter, the multipath policy management server 100 preferably transmits a policy for each service flow managed as the policy response message to the policy-based proxy agent means 200 according to the policy request message.

Through this, the policy-based proxy agent means 200 performs the bandwidth control, the service flow control, the path control function, etc. using the policy response message, thereby controlling the traffic of the user terminal 10 by the proxy server 300. It is desirable to communicate with each other so that the communication is performed.

Second embodiment (when there is a multi-path TCP (MPTCP) function of the user terminal means)

Policy-based path control system in a multi-path environment according to the second embodiment of the present invention, as shown in Figures 4 and 5, multi-path policy management server 1000, policy-based user terminal means 2000 and policy Preferably, the multi-path policy management server 1000 is regarded as a base station means for performing an operation of a multi-path policy manager, and the policy-based proxy server 3000 is included. It is also desirable to perform the operation in the base station means.

Through this, the policy-based path control system in a multi-path environment according to the second embodiment of the present invention uses the policy-based user terminal means 2000 that can perform a function such as MPTCP using a pre-installed application. Through the traffic transmission, bandwidth control, service flow control, multi-path control function, the policy for relaying the traffic transmitted in the multi-path from the policy-based user terminal means 2000 to the content server 4000 through The proxy server 3000, the content server 4000 for providing content at the request of the policy-based user terminal means 2000, and the multipath policy management server 1000 storing and managing policy related information. It is preferable to comprise.

Through the multipath policy management server 1000, through the selective path control for each service flow, it is possible to provide an optimized service such as QoS (Quality of Service), bandwidth, load balancing, etc. for each service flow.

To learn more about each configuration,

The multipath policy management server 1000 may store and manage predetermined policy related information for each service flow in a multipath environment.

The policy-related information is preferably input in advance from an external administrator, and updated whenever a new path environment is established or whenever information of the path environment changes.

The policy-based user terminal means 2000 preferably generates traffic designated as a destination address of the content server 4000 that provides the specific service in order to receive the desired specific service.

In addition, a policy request message is transmitted to the multipath policy management server 1000 using a pre-installed application, and a policy reply is generated according to the policy request message from the multipath policy management server 1000. It is desirable to receive a message.

At this time, the policy response message is preferably generated based on the policy related information in the multipath policy management server 1000, and selects among service flow classification information, service flow bandwidth information, and service flow path information. It is most preferable to include any one or more of the above.

In detail, the policy response message includes information for classification by service flow including IP address and port information of the content server, IP address and port information of the content server, and ID information for each service flow type (multipath policy management). Information for up / down bandwidth control for each service flow, including information defined in the server 100, information about a path to be used among a plurality of communication networks (transport networks), port information of a content server, and the like. It is most preferable to include information for path control for each service flow.

In addition, the policy-based user terminal means 2000 is a multipath interface 2100 by setting the traffic generated by using the policy response message in a multipath environment for each service flow and controlling bandwidth for each set path. It is most preferable to set to enable multipath communication through.

That is, the policy-based user terminal means 2000 preferably controls the multipath communication by setting the multipath and the bandwidth for each path using the policy response message.

To this end, the policy-based user terminal means 2000 is, as shown in Figure 4, multi-path interface 2100, policy integration management unit 2200, classification management unit 2300, bandwidth management unit 2400, path management unit ( Most preferably, it is configured to include the 2500 and the flow separation unit 2310.

The configuration of the multipath interface 2100, the policy integrated management unit 2200, the classification management unit 2300, the bandwidth management unit 2400, the path management unit 2500, and the flow separation unit 2310 is the policy-based user terminal means 2000. ) Is provided as separate means or is provided in the form of elements on the PCB substrate is preferably controlled to perform the operation in accordance with the control of the pre-installed application.

It is most preferable that the multipath interface 2100 determines a communication path when performing multipath communication by setting a bandwidth for a transmission path for each service flow.

The policy integrated management unit 2200 may communicate with the multipath policy management server 1000 to transmit the policy request message and to receive the policy response message accordingly.

The policy integrated management unit 2200 may store and manage the received policy response message, and analyze and provide the policy response message according to a request.

The classification manager 2300 receives the classification information for each service flow in the policy response message from the policy integration manager 2200 and sets a policy for classifying service flows for generated traffic.

Accordingly, the flow separation unit 2310 may classify the service flow for the generated traffic according to the policy set by the classification management unit 2300.

The bandwidth manager 2400 receives the bandwidth information for each service flow in the policy response message from the policy integrated manager 2200, and sets a policy for the bandwidth for each transmission path. Through this, when performing multipath communication through the multipath interface 2100, it is preferable to set a bandwidth according to the multipath used.

The path manager 2500 receives the path information for each service flow in the policy response message from the policy integration manager 2200, and sets a policy for setting a transmission path for each service flow.

At this time, the path information for each service flow among the policy response messages received from the policy integrated management unit 2200 includes a network quality measurement element (RTT, Delay, etc.) value for each path, thereby providing an optimal path for each service flow. It is desirable to set a policy on selection.

To summarize the operation of the policy-based user terminal means 2000, the policy integrated management unit 2200 transmits the policy request message to the multipath policy management server 1000, and the multipath policy management server 1000. It is preferable to search for a preset policy based on the information included in the policy request message.

Information about the found preset policy is transmitted to the policy-based user terminal means 2000 using the policy response message.

Through this, in the policy-based user terminal means 2000, by setting the policy for each service flow using the policy response message received from the policy integration management unit 2200, the policy for the optimal path selection for each service flow It is desirable to set.

The policy-based user terminal means through the configuration of the multipath interface 2100, the policy integrated management unit 2200, the classification management unit 2300, the bandwidth management unit 2400, the path management unit 2500, and the flow separation unit 2310. 2000 changes the destination address of the traffic classified by the flow separation unit 2310 to the policy-based proxy server 3000, and transmits the multipath interface to the transmission path set according to the policy in the path manager 2500. It is desirable to perform multipath communication via 2100. At this time, as described above, the multipath interface 2100 is most preferably set by the bandwidth manager 2500 to set a bandwidth for each transmission path according to a policy.

The policy-based proxy server 3000 preferably rearranges and merges the multipath traffic transmitted through the policy-based user terminal means 2000 and transmits the multipath traffic to the content server 4000.

That is, the policy-based proxy server 3000 converts the multipath traffic transmitted through the multipath interface 2100 into a general TCP session and transmits it to the content server 4000.

In addition, the content server 4000 transmits a packet according to the request (traffic) of the policy-based user terminal means 2000 to the policy-based proxy server 3000, and the policy-based proxy server 3000 in the policy Preferably, the multi-path communication is performed by dividing the traffic of the content server 4000 with the base user terminal means 2000 as a destination address into subflows.

Of course, as in the multipath communication when the traffic of the policy-based user terminal means 2000 is transmitted, the final communication is performed by changing the multipath traffic of the content server 4000 to a general TCP session.

In other words, the policy-based path control system in a multi-path environment according to the second embodiment of the present invention, the policy to the multi-path policy management server 1000 in the initial operation in the policy-based user terminal means (2000) It is desirable to convey the request message.

At this time, the policy request message is simply a message for the policy request and does not include other information.

Thereafter, the multipath policy management server 1000 preferably returns a policy for each service flow managed as the policy response message according to the policy request message.

In the policy-based user terminal means 2000, by using the policy response message, by performing a bandwidth control, a service flow control, a path control function and the like to deliver traffic to the policy-based proxy server 3000 to communicate It is desirable to.

In other words, the policy-based path control system in a multi-path environment according to an embodiment of the present invention solves the problems of the conventional proxy-based multipath communication and provides QoS, bandwidth, and load balancing for each service flow. It can provide an optimized service.

As described above, the present invention has been described in detail by specific embodiments, such as specific components, and the like. However, this is merely provided to help a more general understanding of the present invention, and the present invention is limited to the above embodiment. However, various modifications and variations are possible to those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be limited to the described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, shall fall within the scope of the present invention. .

First embodiment (when there is no multipath TCP function of the user terminal)
10: terminal 20: content server
100: multi-path policy management server
200: policy-based proxy agent means
210: multi-path interface 220: policy integrated management unit
230: classification management unit 240: bandwidth management unit
250: path management unit 231: flow separation unit
300: policy based proxy server
Second embodiment (when there is a multipath TCP function of a user terminal)
1000: multi-path policy management server
2000: policy-based user terminal means
2100: multi-path interface 2200: policy integrated management unit
2300: classification management unit 2400: bandwidth management unit
2500: path management unit 2310: flow separation unit
3000: Policy based proxy server
4000: Content Server

Claims (6)

A multipath policy management server 100 for storing and managing predetermined policy related information for each service flow in a multipath environment;
Connected to at least one terminal 10 generating traffic having the destination address of the content server 20 of the specific service in order to receive the desired specific service, the policy request to the multi-path policy management server 100 ( transmits a policy request message and receives a policy reply message generated based on the policy related information from the multi-path policy management server 100,
Policy-based proxy agent means for controlling the multi-path communication through the multi-path interface 210 by setting the multi-path setting and the bandwidth for each path using the policy response message for the traffic received from the terminal 10 ( 200); And
A policy based proxy server (300) for rearranging and merging the multipath traffic transmitted through the policy based proxy agent means (200) to the content server (20);
Consists of including
The policy response message is
It includes any one or more selected from the classification information for each service flow, bandwidth information for each service flow, path information for each service flow based on the predetermined policy-related information,
The policy based proxy agent means 200
Multipath interface 210;
A policy integrated management unit 220 which communicates with the multi-path policy management server 100 to receive the policy response message;
A classification manager 230 configured to receive classification information for each service flow in the policy response message from the policy integration manager 220 and to set a policy for classifying service flows for traffic generated in the terminal 10;
Receiving the bandwidth information for each service flow of the policy response message from the policy integration management unit 220, and setting the bandwidth for each transmission path, when performing the multi-path communication through the multi-path interface 210, to control the bandwidth Bandwidth manager 240;
A path manager 250 receiving path information for each service flow from the policy response message from the policy integration manager 220 and setting a transmission path for each service flow; And
A flow separation unit 231 for classifying service flows for traffic generated in the terminal 10 according to a policy set by the classification management unit 230;
Including;
The destination address of the traffic of the terminal 10 classified by the flow separation unit 231 is changed to the policy-based proxy server 300, and the multi-path interface ( Policy-based path control system in a multi-path environment, characterized in that for performing the multi-path communication via (210).
delete delete A multipath policy management server 1000 for storing and managing predetermined policy related information for each service flow in a multipath environment;
In order to receive the desired specific service, the traffic generated by the destination address of the content server 4000 of the corresponding specific service,
A policy reply generated by transmitting a policy request message to the multipath policy management server 1000 by using an installed application and generated based on the policy related information from the multipath policy management server 1000. ) Receive the message,
A policy-based user terminal means (2000) for performing multi-path communication through a multi-path interface (2100) by setting the multi-path setting and bandwidth for each path by using the generated policy response message; And
A policy-based proxy server 3000 for rearranging and merging the multipath traffic transmitted through the policy-based user terminal means 2000 and transmitting it to the content server 4000;
Consists of including
The policy response message is
It includes any one or more selected from the classification information for each service flow, bandwidth information for each service flow, path information for each service flow based on the predetermined policy-related information,
The policy-based user terminal means 200
Multipath interface 2100;
A policy integrated management unit 2200 which communicates with the multi-path policy management server 1000 and receives the policy response message;
A classification manager 2300 which receives classification information for each service flow in the policy response message from the policy integration manager 2200 and sets a policy for classifying a service flow for the generated traffic;
Bandwidth that controls bandwidth when multi-path communication is performed through the multi-path interface 2100 by receiving bandwidth information for each service flow among the policy response messages from the policy integrated management unit 2200. Management unit 2400;
A path manager 2500 for receiving path information for each service flow from the policy response message from the policy integration manager 2200 and setting a transmission path for each service flow; And
A flow separation unit 2310 classifying a service flow for the generated traffic according to a policy set by the classification management unit 2300;
Including;
The destination address of the traffic classified by the flow separation unit 2310 is changed to the policy-based proxy server 3000, and the multi-path through the multipath interface 2100 is set to the transmission path set by the path management unit 2500. Policy-based path control system in a multipath environment, characterized in that to perform the path communication .
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