KR20150082082A - Network service system and method for providing network service in multiple mobile network environment - Google Patents

Abstract

The network service system according to the present invention identifies whether a packet provided from a terminal or a terminal that selectively provides an ICN (Information Centric Networking) protocol and an Internet protocol packet corresponds to an ICN protocol packet or an Internet protocol packet, Thus, it includes a smart DU (digital unit) for delivering packets on different paths, and an ICN node for receiving content from an ICN protocol packet from a smart DU.

Description

[0001] The present invention relates to a network service system and a network service method in a multi-mobile network environment,

The present invention relates to a system and method for providing a network service in an environment where a communication network and an information center network (ICN) coexist in order to transmit various media data including a large amount of streaming data to a user more quickly will be.

ICN is a future network technology that locates and delivers desired information in the name of data (or content) instead of the IP address used in the current IP network.

The concept of ICN is used in various research projects in the United States and the European Union such as Named Data Network (NDN), Content-Centric Network (CCN), Data-Oriented Network Architecture (DONA), Publish-Subscribe Internet (PSI) ), And so on. ICN, NDN, CCN, DONA, PSI, and NetInf are somewhat different from each other in terms of detailed technology, but they are the same in terms of the goal to which they are directed.

In the current Internet architecture where communication between IP-based client-server models or peers is mainstream, both ends participating in communication establish an inter-connection relationship and then transmit IP data packets Day-to-day transmission paradigm. The current Internet architecture has limitations in terms of scalability and security.

On the other hand, ICNs that are aimed at the future Internet architecture are "What" - a network centered on information that has significant implications for building users and applications. ICNs change the current communication paradigm that focuses on "where", such as addresses, servers, and hosts.

In other words, instead of specifying a location for obtaining information, such as an IP address, the ICN considers the information as the best independent subject by giving a unique identifier or name to the information, To the nearest and fastest.

The current mobile communication network is introducing mobile CDN technology to improve content delivery efficiency. The mobile CDN technology enables the delivery of content to a user by placing the cache server at a base station close to the user and storing the data of the contracted service / content provider in advance in the cache server.

Mobile CDN technology can provide faster data service through user proximity transmission, but the data provided is limited to contracted contents rather than general Internet contents, and DPI (Packet Gateway) at the back end of PGW (Packet Gateway) (Deep Packet Inspection) server exists to monitor user request packets and determine whether desired contents are being stored in the cache.

On the other hand, ICN differs from mobile CDN technology, which carries content delivery at the server (or service) level that is independent of the network, because it pursues network level content delivery. The network-level content delivery technology allows the network to select and process the optimal content delivery method in consideration of the network conditions (load, bandwidth, delivery path, etc.). By integrating the server and network, performance, CAPEX, and OPEX It can improve efficiency and ultimately help carriers improve profitability.

SUMMARY OF THE INVENTION The present invention provides a network service system and a service method capable of increasing data transmission speed and processing efficiency by applying ICN technology in an environment in which a mobile communication network is established.

The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

An ICN network according to an embodiment of the present invention includes a terminal that provides an ICN protocol and an Internet protocol together, an ICN node capable of transmitting ICN protocol packets and a smart DU capable of identifying and processing Internet protocol packets, ICN packets Data plane function), and ICN platform for controlling ICN node (control / management plane function of network equipment and ICN-API for higher application).

Specifically, in a network service system according to an embodiment of the present invention, a terminal selectively provides a packet of an ICN protocol and an Internet protocol, and a smart DU is an ICN protocol packet or an Internet protocol packet And delivers the packet to different paths according to the identified packet type. The ICN node receives the ICN protocol packet from the smart DU and can provide the content to the terminal.

According to an embodiment, in an environment where a mobile communication network and an ICN network coexist, a terminal can use both networks simultaneously or independently.

In one embodiment, when the terminal is powered on, the terminal and smart DU cooperate to determine if an ICN network connection is available. To this end, the smart DU or mobile communication base station can provide information about the availability of the ICN network to the corresponding terminal and the criteria for receiving the ICN service.

If there is no ICN node in the base station (or the national office), the terminal accesses the existing mobile communication network and uses the IP service. When the terminal moves and connects to other base station equipment and the ICN network becomes available, the smart DU or mobile communication base station provides the terminal with information on the availability of the ICN network connection and criteria for receiving the ICN service.

The terminal cooperates with the ICN node or the Internet server to determine whether to use the ICN network, the mobile communication network, or the both networks sequentially according to the capacity, type, and frequency of use of the contents.

The reference information required for determining which network to use is acquired through interaction between the terminal and the ICN node, the terminal and the service server (eg, a portal server such as Naver, Google, YouTube, etc.), and a smart DU in the terminal and the base station.

The network selection criteria information may be determined solely on the basis of the record previously used by the terminal.

The information transmitted through the ICN network basically includes all types, but it is possible to preferentially use the ICN network in order to acquire specific types of information according to the policy of the terminal.

The network selection criterion of the terminal can be determined not only based on the type of information but also on the size of the information, ICN name or existence of ID, service type such as real-time service, and the like.

For example, personal creation information in which ID does not exist communicates through a mobile communication network when a mobile communication network and an ICN network coexist.

If there is an ICN name or ID, there is a high probability that it will be used frequently.

A network service method according to an exemplary embodiment of the present invention includes the steps of: requesting a terminal for content using an ICN (Information Centric Networking) protocol and an Internet protocol packet; identifying a packet type provided from the terminal; Transmitting the packet to an ICN network when the packet is an ICN protocol packet and transferring the packet to a mobile communication network when the packet is an Internet protocol packet and delivering a content requested by the terminal in response to the delivered packet, .

The present invention provides a network service system and a network service method capable of improving data transmission speed and processing efficiency by applying ICN technology to a mobile communication network and linking a terminal and an ICN network. Especially, when the capacity of data such as video data occupying more than half of mobile traffic is large, the effect of the present invention can be maximized.

According to the configuration of the present invention, it is possible to operate the existing mobile communication network and the new ICN network in parallel, and when a name-based information delivery service is provided in the mobile ICN network, the terminal, the ICN network element, When it is turned on or the mobile area is moved, it is possible to determine whether or not the ICN network can be used.

In addition, when the terminal requests specific information (or contents), it can determine whether to receive information through the ICN network or receive it through the mobile communication network, and request specific information. At this time, For example, large data, data type, name of data or ID existence and service type, etc.).

Through the present invention, a mobile terminal user can use a high-quality high-quality service such as a high-capacity high-definition streaming service and a low-latency real-time online game that can not be serviced in the past, and a telecommunication service provider and a service provider can generate profit by expanding a new service . In addition, it can reduce network installation and operation cost by preventing redundant transmission of large contents and simplifying name-based contents transmission mechanism.

It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. .

1 is a view for explaining a mobile ICN service according to an embodiment of the present invention.
2 is a diagram illustrating a protocol stack of a mobile terminal according to an exemplary embodiment of the present invention.
3 is a flowchart illustrating a network service method according to an embodiment of the present invention.
4 is a block diagram illustrating a terminal according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

For the embodiments of the invention disclosed herein, specific structural and functional descriptions are set forth for the purpose of describing an embodiment of the invention only, and it is to be understood that the embodiments of the invention may be practiced in various forms, The present invention should not be construed as limited to the embodiments described in Figs.

In describing the components of the embodiment of the present invention, the terms first and second can be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.

The present invention provides a method and system for operating an existing mobile communication network and a new ICN network in parallel, and in providing a name-based information delivery service in a mobile ICN network, a terminal, an ICN network element, And a method and system for determining whether the ICN network can be used when the mobile area is moved.

The present invention relates to a method of distributing an ICN node in a base station (BS-DU device location) located at a national office in a mobile communication network according to a communication service provider and connecting these nodes to each other to construct a unique ICN network, We propose a method that the terminal can use.

In addition, the present invention provides a method of determining whether information is received through an ICN network or received through a mobile communication network when the terminal requests specific information (or contents). In this case, Data type, data type, data name or ID existence, service type, etc.).

1 is a view for explaining a mobile ICN service according to an embodiment of the present invention.

Referring to FIG. 1, a mobile ICN service is provided through a mobile ICN network, and an IP service is provided through an existing mobile communication network. The mobile ICN network may include a terminal 100, a smart DU 200, an ICN node 300, and an ICN platform 400.

The terminal 100 is a terminal capable of mobile communication and wireless communication simultaneously including an IP-based mobile communication protocol and an ICN protocol. The wireless air section may use the MAC / PHY communication protocol for IP communication and ICN communication in common or in other access methods. The protocol used by the terminal 100 will be described in more detail with reference to FIG.

The smart DU 200 performs functions of a digital unit (DU) of a base station (BS) equipment. The smart DU 200 identifies the packet type of the terminal 100 as well as an existing mobile communication function for generating and managing an IP based GTP (GPRS Tunneling Protocol) for each user terminal and delivers the packet according to the identified packet type.

Specifically, the smart DU 200 identifies whether the protocol provided from the terminal 100 is an ICN protocol or an Internet protocol, and delivers the packet to a different path according to the identified packet type. For example, the smart DU 200 bypasses the packet to the ICN node 300 when it identifies that the packet provided from the terminal 100 is an ICN packet. When the protocol provided from the terminal 100 is identified by the Internet protocol, the packet can be provided through the existing mobile communication network.

According to an embodiment, smart DU 200 may collect traffic usage by terminal 100 and provide billing information on demand.

ICN node 300 is a network device that performs packet forwarding based on name (or unique ID). The operation mechanism of name-based information delivery is substantially the same as the CCN, ICN, and NDN technologies and basically includes a content caching function. Therefore, a detailed description thereof will be omitted.

The ICN node 300 proposed in the present invention also includes a caching and a storing function. The newly generated original contents are stored and distributed in one of the distributed ICN nodes 300 according to the policy of the ICN platform 400.

The smart DU 200 may be configured in an intelligent ICN base station. The ICN node 300 may be distributed in a part of the ICN network, depending on the management of the ICN platform 400. [ Therefore, some of the base stations to which the terminal 100 accesses may include the ICN node 300, but some of the base stations may not include the ICN node 300. FIG.

The ICN platform 400 is a device that performs a network management plane function such as Name Routing, as well as network management plane functions such as traffic usage and node status / performance information collection.

Based on the status and topology information of the node, the ICN platform 400 generates RIB (Routing Information Base) information based on the status and topology information of the node. Based on this information, the ICN platform 400 generates a name based forwarding table information Base) information. In addition, the ICN platform 400 provides an API interface to a service provider (service / content provider) using the ICN network to generate name-based information and store it in the mobile ICN network for management.

An embodiment of the network service according to the present invention is as follows.

If a plurality of viewers watch a World Cup soccer game through a mobile communication terminal, huge network traffic may occur if the terminals are connected to the relay server through the PGW in the current mobile communication tunneling scheme. This can lead to significant network problems.

According to the present invention, since there is a content ID (or name) for a soccer game to be provided to the terminal, soccer game contents can be provided to a large number of terminals through the ICN network. In this case, traffic generation in the network exists only between each user terminal 100 and the smart DU 200. Therefore, in the network service according to the present invention, there is no traffic problem in the mobile communication backhaul and the core network section.

2 is a diagram illustrating an exemplary protocol stack of a terminal for providing network services according to the present invention.

Referring to FIG. 2, the AT 100 includes a dual protocol stack for simultaneously supporting an ICN service and an IP-based ATM communication service.

The protocol stack of the terminal 100 may include a mobile communication protocol including a PHY layer and a MAC layer, an Internet protocol such as existing IP and TCP / HTTP, and an ICN protocol of the same layer as the Internet protocol .

The terminal 100 can select whether to use the IP and TCP / HTTP protocols, that is, the Internet protocol or the ICN protocol. The selection of the protocol may be performed when power of the terminal 100 is turned on, when the terminal 100 moves and is connected to another base station, or at predetermined time intervals. According to the embodiment, if the terminal 100 can not detect the connection with another base station, it can select the protocol to be used when the terminal 100 moves over a predetermined distance.

According to the embodiment, the terminal 100 cooperates with the ICN node 300, the smart DU 200, or the Internet server shown in FIG. 1 to determine whether to receive a service through the ICN node 300 . For example, the protocol selection of the terminal 100 can be made based on the information requested by the terminal 100, the type of the content, the name of the information or the existence of the ID, or the like.

In another embodiment, the terminal 100 may accumulate and store previous service use records and use a protocol to receive a service frequently used in the terminal 100 based on the stored usage record. In another embodiment, the terminal 100 may internally store a criterion for using a particular service and select a protocol according to the stored criterion.

Since the different networks are used through the smart DU 200 according to the protocol selected in the terminal 100, the selection of the protocol of the terminal 100 can be understood as the same concept as selecting the network to be used.

Hereinafter, a method for determining a protocol used in the terminal 100 will be described in detail with reference to the drawings.

3 is a flowchart illustrating a network service method according to an embodiment of the present invention.

A network service method according to an embodiment of the present invention is a network service method in which a terminal selectively requests information or contents using a packet of an ICN protocol and an Internet protocol and the ICN node 300 identifies a packet type provided from the terminal, When the packet is an internet protocol packet, the packet is delivered to the mobile communication network, and the content requested by the terminal 100 is delivered in response to the packet.

Specifically, FIG. 3 specifically shows whether the terminal 100 requests one of the Internet protocol and the ICN protocol to request content.

When the terminal 100 is initialized as in the case where power is turned on, it is determined whether connection to the ICN network is possible (step S310). For example, when the terminal 100 does not have the ICN node 300 in the low-speed base station (step S310, NO), the terminal 100 uses the Internet protocol And connects to the mobile communication network (step S320).

Even when the terminal 100 is connected to the mobile communication network, as described above, when the terminal moves and is connected to another base station or a predetermined time has elapsed, it can again judge whether or not the terminal 100 can be connected to the ICN network .

If the terminal 100 can access the ICN network (step S310, YES), the terminal 100 determines whether to use the ICN service (step S330). Even if the terminal 100 can use the ICN network, there may be content suitable for using the mobile communication network. Therefore, the terminal 100 determines once again whether to use the ICN protocol.

For example, it is expected that ICN will not completely replace the role of the mobile network for a long period of time when using personal information or non-traffic-rich content or voice services (eg VoIP). Therefore, if the ICN network is used at the time of receiving the voice service for the first time, the service may be disconnected when the terminal moves to the area where the ICN node 300 is not installed. Therefore, in the present invention, it may be advantageous to use existing mobile communication networks for personal information without voice service or ICN ID.

Thus, even if the terminal 100 can use the ICN network, the terminal 100 can select another protocol such as the Internet protocol according to a specific service type.

According to the embodiment, the terminal 100 can acquire a network selection criterion used by the terminal 100 in cooperation with the smart DU 200, the ICN node 300 or the Internet server provided in the base station.

The terminal 100 selects a protocol to use according to the obtained network selection criterion. For example, the protocol used by the terminal 100 can be selected according to at least one criterion of the requested information or the capacity, kind, ICN ID, and frequency of use of the content.

For example, personal information for which no ID exists can acquire contents using the Internet protocol, and when the content size is large, traffic of the mobile communication network can be reduced when the ICN protocol is used.

According to the embodiment, the terminal 100 may select a protocol to be used based on the previous network selection record. By providing a protocol to the smart DU 200 by selecting a protocol with a high frequency of use in the past, content can be provided more efficiently.

If the terminal 100 determines that it is appropriate to use the ICN protocol (step S330, YES), it connects to the ICN network (step S340). Connecting to the ICN network as described above is achieved by providing the ICN protocol packet to the smart DU 200 by the terminal 100 and delivering the packet to the ICN node 300 by the smart DU 200.

The ICN node 300 can directly provide the terminal 100 with contents temporarily stored or contents provided from another ICN node.

If the terminal 100 determines that it is appropriate to receive the content using the Internet protocol (step S330, NO), the terminal 100 selects to use the Internet protocol and transmits the Internet protocol packet to the smart DU 200 To the mobile communication network (step S320).

The terminal 100 determines again whether or not the ICN network can be used after the terminal moves beyond a predetermined distance or after a predetermined time or more has elapsed or when the terminal 100 is connected to another base station (Step S310).

4 is a block diagram illustrating a terminal according to an embodiment of the present invention.

Referring to FIG. 4, the AT 100 may include a network selection criteria management unit 110 and a network selection unit 120.

 The network selection criterion managing unit 110 may obtain a criterion related to the network selection of the terminal 100 from the ICN node 300, the smart DU 200, the base station or the Internet server. The criteria for network selection can be made in various ways as described above.

The network selection unit 120 can select a protocol to be used by the terminal 100 according to the network selection criterion. According to the embodiment, the usage network selection unit 120 can select a usage network according to a network selection criterion based on the capacity, kind, etc. of content requested by the terminal 100. [ For example, the network selection criterion may be such that the network is selected according to the numerical value given priority or weighted on various factors.

In another embodiment, the usage network selection unit 120 may select a usage network having a relatively high frequency of use based on the network selection record information. The previous network selection record may reflect the preference data of the terminal 100 user. Therefore, regardless of the type and capacity of the content, the network selection unit 120 can allow the terminal 100 to select a network that has been used relatively before.

A network service system and a network service method according to an embodiment of the present invention selectively transmit a protocol packet through a terminal 100 capable of simultaneously using an Internet protocol and an ICN protocol, The mobile communication network and the ICN network can be used at the same time. By using the two networks at the same time, it is possible to cope with the increase of the traffic, and at the same time, the progressive conversion to the ICN network can be achieved while using the already established mobile communication network.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of.

100: terminal
200: Smart Unit (Digital Unit)
300: ICN node
400: ICN Platform

Claims (15)

A terminal selectively providing an ICN (Information Centric Networking) protocol and an Internet protocol packet;
A smart DU (digital unit) for identifying whether a packet provided from the terminal corresponds to an ICN protocol packet or an internet protocol packet and delivering the packet to a different path according to the identified packet type; And
And an ICN node for receiving the ICN protocol packet from the smart DU and providing the content. The method according to claim 1,
The terminal,
Wherein the network service system selects whether to use the ICN protocol or the Internet protocol based on at least one of a capacity, a type, and a frequency of use of the content. The method according to claim 1,
The smart DU,
When it is identified that the packet provided from the terminal is the ICN protocol packet, the ICN protocol packet is bypassed to the ICN node, and if the packet is identified as the Internet protocol packet, Lt; RTI ID = 0.0 > 1, < / RTI > The method according to claim 1,
The terminal,
A network selection criterion managing unit for obtaining a network selection criterion from the ICN node or the smart DU; And
And selecting a protocol to be used based on the network selection criterion. The method of claim 4,
The utilization network selection unit
And selects a protocol to be used based on the previous network selection record of the terminal. The method of claim 4,
The network selection unit selects,
And receives information on whether or not an ICN network connection is available from the smart DU or the base station. The method of claim 4,
The network selection unit selects,
And selects a protocol to be used when the terminal is powered on. The method according to claim 1,
Wherein the ICN node performs caching and storage of contents to be provided to the terminal. The method according to claim 1,
Further comprising: an ICN platform for collecting and managing status and performance information of the ICN node and generating name-based forwarding information required for the ICN node. Selectively requesting an ICN (Information Centric Networking) protocol and an Internet protocol packet to request a content;
Transmitting the packet to an ICN network when the packet is an ICN protocol packet and to a mobile communication network when the packet is an Internet protocol packet; And
And delivering the requested content in response to the delivered packet. The method of claim 10,
The step of the terminal requesting the content includes:
And determining whether the terminal can use the ICN network in cooperation with a base station connected to the terminal. The method of claim 11,
If the base station connected to the terminal changes, if the terminal moves at a predetermined distance or more, or if a predetermined time elapses after the content request is performed, if it corresponds to at least one of the base stations connected to the terminal And determines again whether the terminal can use the ICN network. The method of claim 11,
Further comprising the step of receiving information on whether the terminal can access the ICN network from the base station. The method of claim 10,
The step of the terminal requesting the content includes:
And selecting whether to use the ICN protocol or the Internet protocol based on at least one of a capacity, a type, and a frequency of use of the content. 15. The method of claim 14,
And if the identification information does not exist in the content requested by the terminal, the Internet protocol is used.

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