KR101706597B1 - Peer-to-Peer Service Method and System for Devices using Multiple IP Addresses - Google Patents

Abstract

The present invention provides an optimum peer-to-peer service for terminals using a plurality of IP addresses in consideration of the service type of the terminal, the network information, the resource information of the terminal, the network operation policy of the communication provider, To-peer service method and system for providing a peer-to-peer service.
A method of providing a peer-to-peer service from a server to a client terminal on a network according to an aspect of the present invention includes receiving a content request message including a plurality of IP addresses as a destination from a terminal using a plurality of IP addresses, And providing the terminal with a list of peers of the source and destination pairs including the IP address of the peer that owns the content as a source.

Description

Technical Field [0001] The present invention relates to a peer-to-peer service method and system for a terminal using a plurality of IP addresses,

The present invention relates to a peer-to-peer service method and system, and more particularly, to a peer-to-peer service method and system in which a plurality of IPs To-peer service method and system for providing an optimal peer-to-peer service to a terminal using an address.

Peer-to-peer technology is a technology that freely exchanges files between clients that own a file, rather than how many clients download files from one server. Typical peer-to-peer programs include BitTorrent, eDonkey, Pruna, and Soribada. In recent years, peer-to-peer technology, which was used only for simple file downloading, is being used in various fields such as real-time streaming and Internet telephony. Also, it is widely used in Content Delivery Network (CDN) service.

Conventional peer-to-peer techniques, however, use a random or proprietary method of selecting peers to select the peer. That is, although there are peers in the network, traffic is downloaded from another region, another carrier, or even an overseas carrier. As a result, in the peer-to-peer traffic forwarding, it is difficult to guarantee quality such as downloading speed or delay due to downloading the content unnecessarily from other communication carriers or overseas communication carriers, and there arises a problem that traffic between communication carriers increases.

In a wired network environment using an IPv4 / IPv6 dual stack, a terminal has a plurality of IP addresses. In this environment, the terminal can use both IPv4 and IPv6 simultaneously. The optimal peer may be different depending on whether the terminal uses IPv4 or IPv6.

In addition, mobile terminals such as smart phones evolved into terminals that connect to various networks such as 3G, Long Term Evolution (LTE), WiMax, WiBro, and Wi-Fi at any time. If a mobile terminal connected to the Internet via Wi-Fi moves to a 3G network and uses the previously used peer list as it is, it will increase traffic to the network by unnecessarily receiving traffic from a long distance, and the peer- .

A peer-to-peer service that does not consider a terminal using such a plurality of IP addresses unnecessarily increases traffic to the network and significantly degrades performance.

Accordingly, it is an object of the present invention to improve the performance of a peer-to-peer service by allowing a wired terminal or a mobile terminal using a plurality of IP addresses to select an optimal peer Peer service method and system capable of providing an optimal peer-to-peer service that reduces the amount of traffic on the network and reduces the traffic of the network.

When the mobile terminal changes its network and the IP address is updated while the mobile terminal is using the service, the peer list composed of a pair of a source and a destination is updated and provided to the terminal. Thus, an optimal peer-to- To-peer service method and system capable of providing a peer-to-peer service.

According to an aspect of the present invention, there is provided a method for providing a peer-to-peer service from a server to a client terminal on a network, Receiving a content request message including a plurality of IP addresses as a destination from a using terminal; And providing the terminal with a list of peers of the source and destination pairs including the IP address of the peer that owns the content as a source.

The peer list may include a plurality of IP addresses as the source or destination, or may include one or more subnets or local identifiers to which the source or destination belongs, and the peer list may include a destination identifier Distance information may be further included.

Receiving, by the mobile terminal, a peer list update request message including the plurality of IP addresses from the mobile terminal when the mobile terminal moves to the heterogeneous network and is assigned a new IP address; And providing the terminal with a list of peers of the updated source and destination pairs.

The server may temporarily store the peer list and cache the peer list upon request of updating the next peer list from the terminal. Alternatively, the terminal may temporarily store the peer list, and before the next peer list update request, It can be used by caching the peer list.

In the case where the peer is a terminal using the asynchronous Internet access scheme, it can be included in the peer list if the bandwidth used by the peer is below a certain level.

The peer list analyzes the attributes of the peer's area, the distance between the peers, the bandwidth usage rate of the networks, the resource usage rate of the peers or the BGP protocol based on the network information collected from the servers on the network , And selecting the priority according to the analysis.

The list of peers can be generated by reflecting traffic distribution policies by region or time slot, or interworking policies between other providers.

The peer list includes at least one of a peer list for real-time voice service, a peer list for real-time video streaming, a peer list for non-real-time download service, or a peer list for quality assurance depending on the type of the content .

A peer-to-peer service system providing a peer-to-peer service to a client terminal on a network according to another aspect of the present invention includes a plurality of IP addresses as a destination from a terminal using a plurality of IP addresses The tracker includes a peer list generating unit for providing the terminal with a peer list of a source and a destination pair including an IP address of a peer that owns the content as a source.

When receiving a peer list update request message including the plurality of IP addresses from the mobile terminal when the mobile terminal moves to the heterogeneous network and is assigned a new IP address, And provides a list of peers of the destination pair to the terminal.

The peer-to-peer service system is adapted to determine, based on network information collected from servers on the network, an area of the peers that own the content, a distance between the peers, a bandwidth utilization of the networks, And the peer list generating unit may generate the peer list by selecting a priority according to the information analyzed by the analyzing unit.

Wherein the peer-to-peer service system further comprises second analysis means for analyzing a traffic distribution policy by region or time slot or an interworking policy between other providers, The peer list can be generated by reflecting the information.

According to the peer-to-peer service method and system according to the present invention, a wired terminal or a mobile terminal using a plurality of IP addresses can select an optimal peer to improve the performance of a peer-to-peer service, To-peer service that reduces the number of peer-to-peer services.

Also, when the mobile terminal changes its network and the IP address is updated while the mobile terminal is using the service, the list of peers composed of a pair of a source and a destination is updated and provided to the terminal so that an optimal peer- Can be provided.

In consideration of the service type of the terminal, the network information, the resource information of the terminal, the network operation policy of the communication provider, the interworking policy among other providers, etc., an optimum peer list is selected and provided to the terminals using a plurality of IP addresses, It is possible to provide a reliable and reliable content delivery service based on peer-to-peer.

1 is a diagram illustrating a peer-to-peer service in an IPv4 / IPv6 dual stack environment according to an embodiment of the present invention.
2 is an example of a peer list according to an embodiment of the present invention.
3 is a diagram illustrating a peer-to-peer service in an environment configured by a wired IP network and a 3G wireless network according to another embodiment of the present invention.
4 is a flow chart for illustrating a peer-to-peer service according to an embodiment of the present invention.
5 is a block diagram of a tracker in accordance with an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

1 is a diagram illustrating a peer-to-peer service in an IPv4 / IPv6 dual stack environment according to an embodiment of the present invention.

Referring to FIG. 1, a peer-to-peer service system according to an embodiment of the present invention may be used to provide peer-to-peer services to client terminals (e.g., peers P1 to P8) A tracker 108, a network management system (or server) 109, and a network information providing system (or server) 108 that communicate with a given router that handles the routing of traffic on the network and provides routing information, (110).

There are various cases where a terminal (a peer) uses a plurality of IP addresses. When the terminal (peer) uses more than one IPv4 address, when the IPv4 / IPv6 dual stack is used, when more than two IPv6 addresses are used. In addition, the terminal (peer) may use two or more network cards or may use multi-homing with each network provided by a plurality of carriers.

For example, as shown in FIG. 1, three different networks may be connected to the IPv4 / IPv6 dual stack network 101, the IPv4 network 102, and the IPv6 network 103. In this case, the peers P1 to P4 using multiple IP addresses are connected to the IPv4 / IPv6 dual stack network 101, the P2 and P4 peers are the IPv4 / IPv6 dual stack type, the P1 peer is the IPv6 type and the P3 peer is the IPv4 / Peer services can be provided through the tracker 108. The peers P5 to P6 using a plurality of IP addresses are connected to the IPv4 network 102 and are connected to the tracker 108 via the IPv4 type The peers P7 to P8 using a plurality of IP addresses can receive peer-to-peer services and are connected to the IPv6 network 103 to provide peer-to-peer services in IPv6 type through the tracker 108 Can receive.

In a peer-to-peer service system according to one embodiment of the present invention as a centralized peer-to-peer system, the tracker 108 manages the list of peers that own the content and provides the peer with an optimal list of peers Function. The tracker 108 may receive and collect network information from the network management system 109 and the network information providing system 110 to select an optimum peer rank and generate a peer list.

The network management system 109 monitors the traffic congestion period, the network failure, and the like in the networks 101, 102, and 103 and can provide network information on the bandwidth utilization rates of the networks 101, 102, and 103.

The network information providing system 110 can classify the service areas based on the IP addresses of the peers based on the routing information of the routers for the networks 101, 102, and 103, And can provide network information related to them. For example, the network information providing system 110 may determine the location of the peers that own the content, the distance between the peers, the resource usage rate of the peers (e.g., CPU resource, memory resource, Border Gateway Protocol) protocol attributes. The properties of the Border Gateway Protocol (BGP) protocol include AS-Path (AS), Local-Preference, and Multi-Exit Discriminator (MED) for use in routing in routers .

The tracker 108 generates a peer list by selecting an optimum peer rank based on such network information, and generates a list of peers as shown in FIG. 2 by reflecting traffic distribution policies by region or time slot or interworking policies between other providers can do.

For example, if a new peer 104 participates in the IPv4 / IPv6 dual stack network 101, the new peer 104 sends a content request message to the tracker 108 to retrieve a list of peers that own the content (See S410 in FIG. 4). At this time, the new peer 104 includes a plurality of IP addresses (destinations) assigned to itself in the content request message, and transmits the IP address to the tracker 108.

Upon receiving the request, the tracker 108 requests network information from the network management system 109 and the network information providing system 110 to receive the network related information as described above (see S411 in FIG. 4). The tracker 108 generates a list of peers to be provided to the client using the network information thus received and a plurality of IP addresses provided by the new peer 104 (see S420 in FIG. 4). The tracker 108 can generate a list of peers of the source and destination pairs including the IP address of the peer that owns the content as a source and provide it to the new peer 104 (see S421 in FIG. 4).

Based on the network information received from the network management system 109 and the network information providing system 110, the tracker 108 manages the area of the peers that own the content, the distance between the peers, the bandwidth utilization of the networks, Or attributes of the BGP protocol, and selects the priority according to the analysis result, thereby generating an optimum peer list. At this time, the tracker 108 may generate the peer list by reflecting traffic distribution policies by region or time slot, or interworking policies among other providers.

The tracker 108 may provide a list of peers comprising a plurality of IP addresses as a source (an IP address of a content-owned peer) or a destination (an IP address of a peer 104 requesting content) as shown in FIG. In addition, the peer list may be provided with one or more subnets (e.g., a number representing a group above the IP address) or a local identifier (e.g., a number representing a group above the subnet) to which the origin or destination belongs as a source or destination have. The peer list may include distance information between the source and destination. In Fig. 2, a smaller value indicates a closer distance.

Referring to FIG. 2, when a new peer 104 uses an IPv4 address, P3, P4, P2 ... , And download the content from the peer (S430 and S431 in FIG. 4). On the other hand, when the new peer 104 uses the IPv6 address, the distances from P1 to P2 are the same, so that P4, P1, P2 ... Or P4, P2, P1, ... It is possible to download the content from the peer. Also, if the client terminal can use IPv4 and IPv6 at the same time, the distance between P1 and P2 is the same, so P3, P4, P1, P2, ... Or P3, P4, P2, P1 ... Lt; RTI ID = 0.0 > of < / RTI > all peers.

Although not shown in FIG. 2, even when a subnet or area identifier is included in the peer list, by selecting a subnet or area identifier, the new peer 104 can access any one or more The content can be downloaded from the peer.

As shown in FIG. 1, when the terminal uses a plurality of IP addresses, it is not always the optimal peer if the terminal is physically located close to the hop count or is close to the hop count. In order for the terminal to provide an optimal peer list for terminals using a plurality of IP addresses, an optimal peer list is generated for each of a plurality of IP addresses, and the corresponding information is constituted as a pair (source and destination) Should be. The client terminal receiving the pair information (source, destination) can use the information as it is or select the peer based on its own judgment criteria.

3 is a diagram illustrating a peer-to-peer service in an environment configured by a wired IP network and a 3G wireless network according to another embodiment of the present invention.

Referring to FIG. 3, in the peer-to-peer service system according to another embodiment of the present invention, in order to access the wired network 201, the mobile terminals P1 to P4 access the Wi- And accesses the 3G wireless network 202 via the 3G base station or the repeater 208. The peer-to-peer service system may also include a peer-to-peer service system including a tracker 108, a network management system 109, and a network information providing system (or server) 110, Service can be provided.

Mobile terminals such as smart phones are often connected to various networks such as 3G, Long Term Evolution (LTE), WiMax, WiBro, and Wi-Fi. There may be a phenomenon that the network is changed and the IP address is renewed while the service is being used, and the service may be used by connecting to a plurality of networks at the same time.

When the first mobile terminal 203 participates in the peer-to-peer network in the wired IP network 201 using Wi-Fi according to the same procedure as in steps S410 to S431 of FIG. 4, You can choose to download the content.

The mobile terminal 204 is automatically connected to the 3G wireless network when it moves out of the Wi-Fi service area to the heterogeneous network (refer to S440 in FIG. 4) because the mobile terminal can freely move at any time. In this case, the mobile terminal 204 is assigned a new IP address in the 3G wireless network. If the mobile terminal 204 thus moved still uses the existing peer lists P1 and P2, it is connected to the same 3G wireless network and receives data from peers in other networks even though there are adjacent P3 and P4. When the peer-to-peer system operates in this manner, it increases the traffic on the connection line between the wired IP network 201 and the 3G wireless network 202 and receives data from peers that are unnecessarily distant, - The performance of the peer is significantly degraded.

In the present invention, the client terminal 204 updates the peer list as follows so that the client terminal 204 can download contents at the adjacent P3 and P4.

For example, the mobile terminal 204 may request the update of the list of peers that own the content by sending a peer list update request message to the tracker 108 (see S441 of FIG. 4). At this time, the mobile terminal 204 includes a plurality of IP addresses (destinations) assigned to itself in the peer list update request message and transmits the IP addresses to the tracker 108.

The tracker 108 receiving the request requests the network information from the network management system 109 and the network information providing system 110 to receive the network related information as described above (see S442 in FIG. 4). The tracker 108 generates a list of peers to be provided to the client using the network information thus received and a plurality of IP addresses provided by the mobile terminal 204 (see S450 in FIG. 4). The tracker 108 may generate and provide to the mobile terminal 204 an updated list of peers of the source and destination pairs including the IP address of the peer that owns the content (see S451 in FIG. 4). The tracker 108 can update and provide the peer list based on the network information received from the network management system 109 and the network information providing system 110, as in step S420 of FIG. Accordingly, the mobile terminal 204 can select an optimal peer from the updated list of peers and download the content from the peer (S460 and S461 in FIG. 4).

As described above, according to the present invention, an optimal list of peers (origin and destination) is provided so that a client terminal can receive a P2P service from the closest peer. In the case of the mobile terminal, when the mobile terminal moves to the network and is assigned a new IP address, it recognizes that the peer list information (source, destination) used by the mobile terminal is not related to the newly assigned IP address . If the list of peers that have been previously received (origin, destination) is no longer valid, the mobile terminal updates the peer list composed of new (source, destination) pairs in the mobile network, It is possible to select and use the adjacent optimum peer without using the peer used in the "

5 is a block diagram of a tracker 108 in accordance with one embodiment of the present invention. 5, a tracker 108, which is a server on a network according to an embodiment of the present invention, includes a topology analyzing unit 510, a network bandwidth utilization analyzing unit 520, A BGP attribute analysis unit 540, a traffic distribution policy analysis unit 550, an interworking policy analysis unit 560, and a peer list generation unit 590. The components of such a tracker 108 may be realized in hardware, software, or a combination thereof, and the functions of one or more elements may be realized to be integrated into the functions of other elements.

4, the tracker 108 receives a content request message including a plurality of IP addresses as a destination from a client terminal (a peer) using a plurality of IP addresses. When the peer list generating unit 590 receives a content request message (See FIG. 2) of the originating and destination pairs including the IP address of the peer as a source to the client terminal (peer). When the mobile terminal moves to the heterogeneous network and is assigned a new IP address as a client terminal, the tracker 108 receives a peer list update request message including a plurality of IP addresses from the mobile terminal, (See FIG. 2) of the updated source and destination pairs to the corresponding mobile terminal.

In order to allow the peer list generating unit 590 to generate such an optimum peer list, the analyzers 510 to 560 analyze the network information based on the network information received from the network management system 109 and the network information providing system 110 And provides the analyzed information to the peer list generation unit 590. [

For example, the network management system 109 can provide network information on the bandwidth utilization rate of the networks while monitoring traffic congestion periods, network disturbances, and the like in the networks. Accordingly, the network bandwidth utilization rate analysis unit 520 Analysis information necessary for priority selection can be provided to the peer-list generating unit 590. For example, the network bandwidth utilization analyzer 520 may determine the order of bandwidth usage of each of the networks, and provide the order information to the peer list generator 590.

In addition, the network information providing system 110 may determine, based on the routing information of the routers for the networks, the region of the peers that own the content, the distance between the peers, the resource usage rate of the peers (e.g., (E.g., usage rate of network bandwidth resources, etc.) or attributes of the BGP protocol (AS-Path, Local-Preference, MED, and the like), and accordingly, the topology analysis unit 510 Calculates the distance between the peers, determines the order from the smallest distance, and provides the order information to the peer list generating unit 590. In addition, the peer resource utilization analysis unit 530 analyzes the information related to the resource usage rate of the peers from the network information providing system 110 and determines the order of the CPU resources, memory resources, network bandwidth resource, And provides the order information to the peer list generating unit 590. The BGP attribute analysis unit 540 analyzes the network information related to the attributes (AS-Path, Local-Preference, MED, etc.) of the BGP protocol from the network information providing system 110 and stores the attribute values And provides the order information to the peer list generating unit 590. The peer list generating unit 590 generates the order information for the networks according to the predetermined priority policy.

The peer list generation unit 590 can generate an optimal peer list as shown in FIG. 2 by selecting priorities based on the analysis results of the respective elements 510 to 540. For example, according to each order information such as the area of the peers possessing the content or the distance between the peers, the bandwidth utilization rate of the networks, the resource utilization rate of the peers, or the attributes of the BGP protocol analyzed in each of the elements 510 to 540, The peer list of the pair (origin, destination) is selected by selecting the peer of the network which is the closest from the client terminal and has the greatest bandwidth and the property of the BGP protocol, and weighting each order information, You can select multiple (source, destination) pairs with peers.

The peer list generation unit 590 generates information on the distribution policy of each region or time slot from the traffic distribution policy analysis unit 550 or information on the interworking policy among other providers from the interoperation policy analysis unit 560 , The peer list can be generated by reflecting the traffic distribution policy by region or time slot or the interlinking policy between other providers. The traffic distribution policy analysis unit 550 analyzes traffic distribution policies, such as download bandwidth, upload bandwidth, and number of serviceable terminals, which are performed in each network in each network. The traffic distribution policy analysis unit 550 analyzes traffic distribution policies, Download bandwidth, upload bandwidth, number of serviceable terminals, and the like, and provide the analysis information to the peer list generating unit 590. In addition, the inter-enterprise inter-company policy analyzing unit 560 analyzes the interworking policy of each of the other networks, for example, the fee system, the bandwidth, the number of serviceable terminals and the like, 590).

In addition, the peer list generation unit 590 may temporarily store the corresponding peer list in the generation of the above-mentioned peer list, and may cache it when requesting the next peer list update from the client terminal. This is because the generation of the peer list by checking the network information whenever there is a request for the peer list of the client terminal may significantly degrade the performance of the peer-to-peer service system. Therefore, in order to improve the performance of the peer-to-peer service, the peer list generating unit 590 of the tracker 108 can use a list of peers (origin, destination) cached. The present invention is not limited to this, and the client terminal may temporarily store the received peer list and cache it before requesting the next peer list update.

To categorize a list of peers (source, destination) pairs, the list of peers that own the content and the source and destination information adjacent to the network should be managed separately. Based on the information of the peers managed in the separated form, the peer list of the pair (origin and destination) can be cached and used in the client terminal. The tracker 108 similarly stores and manages the information of the peer, Can be used. Such caching can be performed for a predetermined time, and after a predetermined time, the client terminal can request the update of the peer list, or the tracker 108 can provide the updated list of peers to the client terminal.

On the other hand, when the peer that owns the content is a terminal using the asynchronous Internet access method, the peer list generation unit 590 may restrict the use bandwidth of the corresponding peer to a certain level or less, and include it in the peer list. Currently, the subscriber acceptance method of the network is mixed with various Internet access methods such as xDSL, FTTH, and Ethernet. Among them, xDSL series are asynchronous type, and upload and download speeds are different. For example, downloading from VDSL is 50Mbps, while uploading is limited to 10Mbps. In this environment, since the available upload bandwidth is relatively small, this should be taken into consideration in selecting a peer for peer-to-peer communication. That is, when a terminal accommodated in the xDSL series is excessively selected as a peer, it may affect the use of other Internet services of the terminal, and the performance of the peer-to-peer may also be degraded.

In addition, the peer list generation unit 590 generates a list of peers (for example, audio broadcasting service) for real-time voice service, a list of peers for real-time video streaming, a list of peers for non- Or a peer list for quality assurance (for example, a peer connected to a network having a certain surplus bandwidth or more or a peer having a peer resource of a certain value or more), and the like, and generates a list of peers including at least one of them. For example, recently, P2P applications have been used in various fields, so there are requirements in different applications such as real-time voice service, real-time video streaming, and non-real-time data download. To provide an optimal peer-to-peer service, it is possible to add a function to generate and provide a list of peers suitable for such client applications.

While the invention has been shown and described with reference to certain preferred embodiments thereof, 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. 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.

Tracker (108)
The network management system (or server)
The network information providing system (or server)
The new peer (104)
The mobile terminal 203
The moved mobile terminal 204,

Claims (19)

A method of peer-to-peer service from a server to a client terminal on a network,
Receiving a content request message including a plurality of IP addresses as a destination from a terminal using a plurality of IP addresses;
Providing a peer list of a source and a destination pair including an IP address of a content-owned peer as a source to the terminal;
Receiving, by the mobile terminal, a peer list update request message including the plurality of IP addresses from the mobile terminal when the mobile terminal moves to the heterogeneous network and is assigned a new IP address; And
And providing a list of peers of the updated source and destination pairs to the terminal. The method according to claim 1,
Wherein the peer list comprises a plurality of IP addresses as the source or destination. The method according to claim 1,
Wherein the peer list comprises the source or one or more subnets or local identifiers to which the destination or destination belongs as the source or destination. The method according to claim 1,
Wherein the peer list comprises distance information between the source and destination. ≪ RTI ID = 0.0 > 11. < / RTI > delete The method according to claim 1,
Wherein the server temporarily stores the list of peers and caches the list of peers when a next peer list update request is received from the terminal. The method according to claim 1,
Wherein the terminal temporarily stores the peer list and caches the peer list before requesting a next peer list update. The method according to claim 1,
Wherein the peer is included in the peer list if the usage bandwidth of the peer is below a predetermined level when the peer is a terminal using the asynchronous Internet access scheme. The method according to claim 1,
The peer list analyzes the attributes of the peer's area, the distance between the peers, the bandwidth usage rate of the networks, the resource usage rate of the peers or the BGP protocol based on the network information collected from the servers on the network And a priority is selected according to the analysis, thereby generating a peer-to-peer service. 10. The method of claim 9,
The list of peers,
A peer-to-peer service method characterized in that it is generated by reflecting a traffic distribution policy by region or time slot or an interworking policy between other providers. The method according to claim 1,
The list of peers,
A list of peers for real-time video service, a list of peers for non-real-time download service, or a list of peers for quality assurance based on the type of the content. To-peer service method. A peer-to-peer service system for providing a peer-to-peer service to a client terminal on a network,
And a tracker for receiving a content request message including a plurality of IP addresses as a destination from a terminal using a plurality of IP addresses,
Wherein the tracker includes a peer list generator for providing the terminal with a peer list of a source and a destination pair including an IP address of a peer that owns content as a source,
When receiving a peer list update request message including the plurality of IP addresses from the mobile terminal when the mobile terminal moves to the heterogeneous network and is assigned a new IP address, And provides the terminal with a list of peers of the destination pair. delete 13. The method of claim 12,
Based on the network information collected from the servers on the network, analyzing means for analyzing the region of the peers possessing the content, the distance between the peers, the bandwidth utilization rate of the networks, the resource utilization rate of the peers or the attributes of the BGP protocol and,
Wherein the peer list generating unit generates the peer list by selecting a priority according to the information analyzed by the analyzing unit. 15. The method of claim 14,
And second analysis means for analyzing the traffic distribution policy for each region or time slot or the interlinking policy between the different providers,
Wherein the peer list generation unit generates the peer list by reflecting information analyzed by the second analysis unit. A method of peer-to-peer service from a server to a client terminal on a network,
Receiving a content request message including a plurality of IP addresses as a destination from a terminal using a plurality of IP addresses; And
And providing the terminal with a list of peers of a source and a destination pair including an IP address of the peer that owns the content as a source,
Wherein the server temporarily stores the list of peers and caches the list of peers when a next peer list update request is received from the terminal. A method of peer-to-peer service from a server to a client terminal on a network,
Receiving a content request message including a plurality of IP addresses as a destination from a terminal using a plurality of IP addresses; And
And providing the terminal with a list of peers of a source and a destination pair including an IP address of the peer that owns the content as a source,
Wherein the terminal temporarily stores the peer list and caches the peer list before requesting a next peer list update. A method of peer-to-peer service from a server to a client terminal on a network,
Receiving a content request message including a plurality of IP addresses as a destination from a terminal using a plurality of IP addresses; And
And providing the terminal with a list of peers of a source and a destination pair including an IP address of the peer that owns the content as a source,
Wherein the peer is included in the peer list if the usage bandwidth of the peer is below a predetermined level when the peer is a terminal using the asynchronous Internet access scheme. A method of peer-to-peer service from a server to a client terminal on a network,
Receiving a content request message including a plurality of IP addresses as a destination from a terminal using a plurality of IP addresses; And
And providing the terminal with a list of peers of a source and a destination pair including an IP address of the peer that owns the content as a source,
The list of peers,
A list of peers for real-time video service, a list of peers for non-real-time download service, or a list of peers for quality assurance based on the type of the content. To-peer service method.

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