KR100966584B1 - Service offering system and its method in the next generation network - Google Patents

Abstract

The present invention relates to a service technique in a multi-homing and mobile environment of a Next Generation Network (NGN). To this end, the present invention provides an IP core network supported by a multi-layer Internet address or by using mSCTP (mobile SCTP). Unlike the conventional method of providing handover in the transport layer of the ID / LOC mapper for allocating a service session ID according to a service request from a communication terminal, and receiving the service session ID from the ID / LOC mapper, the communication is performed. An ID / LOC mapping server that stores and manages service session information including IP information allocated to a terminal, and receives the service session ID from the ID / LOC mapper, interlocks it with an application session, and requests a service from the communication terminal. Service in a next generation communication network including an application session manager providing a communication terminal to the communication terminal through a service providing server It is capable of implementing the system.

(NGN: Next Generation Network)

Description

SERVICE OFFERING SYSTEM AND ITS METHOD IN THE NEXT GENERATION NETWORK}

The present invention relates to a service method in a next generation network (NGN), and more particularly, to a service providing system and method for a next generation network suitable for providing multi-homing and service mobility in a multi-interface environment of the next generation network. It is about.

The present invention is derived from a study conducted as part of an information and communication standard development support project of the Ministry of Information and Communication and the Ministry of Information and Telecommunications Research and Development (Task Management No .: 2007-P10-027, Task Name: IPv6 Mobility Resource Next Generation Network Standard Development).

As is well known, next generation communication network (NGN) integrates all communication networks such as general telephone network, asynchronous transmission (ATM), frame relay, dedicated network, and wireless communication network into a packet-based common network to reduce network construction cost and operation cost. Of course, it is a voice and data integration network to provide flexible and open network solutions and various applications.

The biggest feature of this next generation network (NGN) is integration and packetization. It can simultaneously receive voice, data, and video, and efficiently provide various value-added services such as Internet telephony and multimedia messaging.It is also effective in disassembling and assembling multiple traffic packets in one communication line. This greatly improves and can provide voice telephone service at a very low cost compared to the conventional method.

In addition, NGN is an IP packet-based next-generation network that provides voice and data communication simultaneously by integrating telephone, internet, and wireless networks into a single common network, and can provide mobile services anytime and anywhere without interruption. In order to provide efficient services in such an environment, efficient mobility support between each access network and active cooperation for ISP replacement are required for multiple ISPs, and in order to provide continuous services across various access networks. IP network support is required.

On the other hand, in the "packet transmission and reception method for the Internet handover service in wired and wireless integrated network conventionally filed in 2002 with respect to the handover scheme using the mobile IP (Korea Electronics and Telecommunications Research Institute, Application No .: 10-2002-0070393) Multi-layered Internet addresses support the requirements that must be supported in mobile environments such as static IP allocation, handover, and tunneling for basic Internet service connectivity.It is a private Internet network that includes the public Internet, base stations, and MLIP systems. In the configured system, the technical idea of providing Internet handover service using the tunneling technique between private internets is described.

In addition, in 2004, "Method for Providing Seamless Handover in Broadband Integrated Network (Korea Electronics and Telecommunications Research Institute, Application No. 10-2004-0081512)", a broadband integrated network composed of an IP core network and various types of access networks is proposed. (BcN) relates to a method for providing an uninterrupted headover service for providing integrated services between heterogeneous networks, and includes mSCTP (mobile SCTP) in gateways and application servers connected to each access network, and uses mSCTP. The technical idea of providing handover in the transport layer of the IP core network is described.

However, the conventionally proposed method focuses on providing bidirectional Internet service and network compatibility in a wired / wireless integrated environment. There is no solution to delay problem and packet loss when performing handover between heterogeneous networks. Although mSCTP is proposed to provide a handover to a mobile terminal using a multi-homing function, various access networks can be implemented by different operators, and since each access network is composed of one network, If the operators of IP core network and access network are different, it is difficult to apply mSCTP. When performing handover using mSCTP, handover delay time and packet loss increase due to access procedure and authentication procedure for each access network, resulting in smooth service. There is a problem in providing.

Accordingly, an aspect of the present invention is to provide an apparatus and method for providing a service in a next generation communication network capable of smoothly providing a multi-homing service by allocating a service session ID according to a service request from a communication terminal in a next generation communication network.

In addition, the present invention is to provide a service providing system and method in a next-generation communication network that can provide service mobility by assigning a service session ID according to the service request from the communication terminal in the next-generation communication network.

In an aspect, the present invention includes an ID / LOC mapper for allocating a service session ID according to a service request from a communication terminal, and IP information allocated to the communication terminal by receiving the service session ID from the ID / LOC mapper. An ID / LOC mapping server for storing and managing service session information, and receiving the service session ID from the ID / LOC mapper and interworking it with an application session and communicating the service requested from the communication terminal through a service providing server. Provided is a service providing system in a next generation communication network including an application session manager provided to a terminal.

In another aspect, the present invention is a method for providing a service in a multi-homing environment of a next-generation communication network, wherein an IP and a service session ID are allocated according to a service request through a specific interface and a corresponding access network from a communication terminal. Storing and managing service session information including the IP and the service session ID, interworking the service session ID with an application session, and providing the requested service to the communication terminal through the specific interface. Requesting a corresponding service through another interface and another access network corresponding to the error of the specific access network, checking the assigned service session ID, and then interworking with the application session. Providing the re-requested service to the communication terminal through the other interface; Containing provides a service providing method in a next-generation network.

In another aspect of the present invention, there is provided a method for providing a service in a mobile environment of a next generation communication network, the method comprising: assigning an IP and a service session ID according to a service request through a specific interface and a corresponding access network from a communication terminal; Storing and managing service session information including the IP and the service session ID, interworking the service session ID with an application session, and providing the requested service to the communication terminal through the specific access network. And re-requesting a corresponding service through an access network different from the specific interface when moving from the specific access network to another access network, updating the service session information, and then updating the service session ID and the application session. Interworking the re-requested service to the communication terminal through the other access network; Comprising the step of providing provides a service providing method in a next-generation network.

According to the present invention, unlike the conventional method of providing handover in a transport layer of an IP core network by using a multi-layer Internet address or using mSCTP (mobile SCTP), a service session ID is used to provide services of a terminal and a service provider. By providing in a multi-interface environment, it is possible to efficiently provide multi-homing and service mobility.

That is, the present invention provides a service continuity and service movement in a service multi-homing environment using multiple interlaces by separately placing a service session ID between a service application and an IP network in a mixed environment of next-generation communication networks such as various types of wired and wireless networks. The service can be continuously provided through the same interface or different interfaces.

The technical gist of the present invention is to provide a service requested through a first interface using an assigned service session ID in a multi-homing environment of a next-generation communication network. 2 Provides a corresponding service using another access network through an interface, and in a mobile environment, when moving from one access network to another, mapping service session information including a service session ID and requesting from a communication terminal in response thereto It is to provide a service provided through a different access network, through this technical means can solve the problems in the prior art.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a service providing system suitable for providing multi-homing and service mobility in a multi-interface environment of a next-generation communication network according to the present invention, wherein the communication terminal 102, the first access network-nth access network 104 /. 1-104 / n), IDentifier / LOCator Mapper (106), IDentifier / LOCator Mapping Server (108), NGN Core Network (NGN Core Network, 110), Application Session Manager ( 112 and service providing server 114.

Referring to FIG. 1, a communication terminal 102 is a terminal having multiple interfaces connecting to multiple access networks, and accesses first access network-n-th in a multihoming environment through multiple interfaces using an assigned service session ID. Continuously providing the same service through the access network of any one of the networks 104 / 1-104 / n, and using this service session ID, through the same interface or another interface in the mobile environment, The same service is provided through any one of the access networks 104 / 1-104 / n.

Here, the communication terminal 102 requests any service through any one of the first access network-n-th access network 104 / 1-104 / n using the first interface in a multi-homing environment. Then, the requested service is received and provided from the service providing server 114 through the NGN core network 110 and the corresponding access network using the service session ID assigned to the communication terminal 102, and an error of the corresponding access network is provided. Occurs, request a certain service through another access network of the first access network-n-th access network 104 / 1-104 / n using the second interface, and accordingly correspond to the corresponding service session information. The service is received and provided through another access network.

Further, when the communication terminal 102 requests any service through any one of the first access network-n-th access network 104 / 1-104 / n using the first interface in a mobile environment, Using the service session ID assigned to the communication terminal 102, the requested service is received from the service providing server 114 through the NGN core network 110 and the corresponding access network, and the other access network is provided in the access network. Move to request a service through another of the first access network-nth access network 104 / 1-104 / n using the first interface or the second interface, and newly allocated new IP. In response to the service corresponding to the service session information is received and provided through the other access network.

In addition, the first access network-nth access network 104 / 1-104 / n includes, for example, CDMA 2000, WCDMA, Wibro, xDSL, HFC, and the like, including the communication terminal 102 and the NGN core network 110. By providing a network service by connecting to the communication terminal 102, ID / LOC mapper 106, ID / LOC mapping server 108, etc., or in connection with the NGN core network 110, the application session manager 112 ) Is connected to the service providing server 114 to perform voice and data communication.

Next, the ID / LOC mapper 106 associates the identifier (ID) assigned to the terminal with the location information (LOC), from the communication terminal 102 to the first access network-nth access network 104 / 1-. When a service is requested through the access network of any one of 104 / n), a service session ID is allocated according to the IP corresponding to the communication terminal 102, and the service session ID is assigned to the ID / LOC mapping server with IP information. 108). In this case, the service session ID is located between the IP and the transport layer for the application session connection, and dynamically maps to the IP that changes according to the situation to support the service connectivity.

In addition, the ID / LOC mapper 106 transmits the service session ID assigned according to the IP corresponding to the communication terminal 102 to the application session manager 112 through the NGN core network 110.

Meanwhile, the ID / LOC mapping server 108 stores and manages the service session ID transmitted from the ID / LOC mapper 106 and IP information as service session information corresponding to the communication terminal 102 and the requested service. In this case, the service session information may include, for example, a terminal number, a service session ID, IP information, and the like.

The NGN core network 110 is a next-generation network defined by ITU-T, which is an international standardization organization, and communicates with the first access network-n-th access network 104 / 1-104 / n in communication terminal 102. Receives the service requested from the service through the service providing server 114 to provide to the communication terminal (102).

Next, the application session manager 112 associates and manages the application session with the service session ID. The application session manager 112 associates the application session with the service session ID transmitted from the ID / LOC mapper 106 through the NGN core network 110. Requests the requested service from the communication terminal 102 to the service providing server 114 via the access network of any of the first access network-n-th access network 104 / 1-104 / n, and the requested corresponding service. Is received from the service providing server 114 and transmitted to the communication terminal 102 through any one of the NGN core network 110 and the first access network-n access network 104 / 1-104 / n. send.

On the other hand, the service providing server 114 is to provide a service for the various stored content, and extracts the requested service from the communication terminal 102 and transmits the corresponding service (service data).

Next, an error occurs in the corresponding access network while providing the requested service through the first interface using the service session ID assigned in the multi-homing environment of the next-generation communication network using the service providing system having the above-described configuration. In this case, after checking the service session ID, a process of providing a corresponding service using another access network through the second interface will be described.

2 is a flowchart illustrating a process of providing a requested service from a terminal in a multi-homing environment of a next-generation communication network according to an embodiment of the present invention.

Referring to FIG. 2, in a multi-morphing environment mode of a next generation communication network (NGN) (step 202), a communication terminal 102 requests a user to request an arbitrary service through an input means, for example, a keypad, which is not shown. If is entered, it is checked whether there is a corresponding service request (step 204).

As a result of the check in the step 204, when there is a service request for any service, the communication terminal 102 transmits a service request signal corresponding to the requested service using the first interface to the first access network-nth access. And transmits the service session ID according to the IP corresponding to the communication terminal 102 according to the service request signal. The ID / LOC mapper 106 transmits the service session ID according to the IP corresponding to the communication terminal 102. Assign (step 206). Here, the communication terminal 102 is assigned an IP connecting to the corresponding access network through the first interface.

In this case, the service session ID is located between the transport layer for connecting the IP and the application session, and dynamically maps to the IP that changes according to the situation to support service connectivity. In the ID / LOC mapper 106, Before allocating the service session ID with the ID / LOC mapping server 108, it is checked whether there is an already assigned service session ID, and the service from the communication terminal 102 when the service session ID does not already exist. Allocates a service session ID according to the request, and if the service session ID already exists, transmits the allocated IP information to the ID / LOC mapping server 108 to update the service session information including the pre-assigned service session ID. .

The ID / LOC mapping server 108 stores and manages the service session ID transmitted from the ID / LOC mapper 106 and IP information as the service session information corresponding to the requested service with the communication terminal 102 ( Step 208). In this case, the service session information may include, for example, a terminal number, a service session ID, IP information, and the like.

Meanwhile, the ID / LOC mapper 106 transmits the service session ID assigned according to the IP corresponding to the communication terminal 102 to the application session manager 112 through the NGN core network 110, and the application session manager 112. ) Associates the application session with the service session ID transmitted from the ID / LOC mapper 106 through the NGN core network 110, and together with the service request signal transmitted from the communication terminal 102, the service providing server 114. And correspondingly, services provided from the service providing server 114 are transmitted through the NGN core network 110 and the corresponding access network, and these services are provided to the communication terminal 102 through the first interface ( Step 210).

Meanwhile, it is checked whether an error occurs (ie, loss of network connectivity) in the corresponding access network while the service is provided to the communication terminal 102 through the first interface (step 212).

As a result of the check in step 212, if an error does not occur, the service is continuously provided to the communication terminal 102 through the first interface (step 210). The service is requested through another of the first access network-n th access network 104 / 1-104 / n using the second interface (step 214). At this time, the communication terminal 102 is assigned a new IP connecting to another access network through the second interface (step 216).

Then, the ID / LOC mapper 106 confirms the service session information stored and managed in the ID / LOC mapping server 108 according to the corresponding service request from the communication terminal 102 (step 218). The service session ID according to the verification result is transmitted to the application session manager 112 through the NGN core network 110.

Accordingly, the application session manager 112 requests the corresponding service to the service providing server 114 by interworking the application session with the service session ID transmitted from the ID / LOC mapper 106 through the NGN core network 110. Correspondingly, the corresponding service provided from the service providing server 114 is transmitted through the NGN core network 110 and the corresponding other access network, and the service is provided to the communication terminal 102 through the second interface (step 220). ).

Therefore, when a service is requested through a first interface in a multi-homing environment of a next-generation communication network, a service session ID corresponding to a service request of a communication terminal is allocated, and the service session ID is linked with the application session to the communication terminal through the first interface. If an error in the access network occurs during the provision of the service, the service is requested through the second interface to check the service session ID, and then the service linked to the service session ID is transmitted to the communication terminal through the second interface. Can provide.

Next, when moving from a specific access network to another access network in the mobile environment of the next-generation communication network as described above, after mapping the new service session information according to the change of the access network, corresponding service requested from the communication terminal Describe the process provided.

3 is a flowchart illustrating a process of providing a service requested from a terminal in a mobile environment of a next generation communication network according to another exemplary embodiment of the present invention.

Referring to FIG. 3, in a mobile environment mode of a next-generation communication network (NGN) (step 302), the communication terminal 102 uses a key for requesting an arbitrary service through an input means, for example, a keypad, not shown. If so, it is checked if there is a corresponding service request (step 304).

As a result of the check in the step 304, when there is a service request for any service, the communication terminal 102 transmits a service request signal corresponding to the requested service using a specific interface to the first access network-nth access network. (104 / 1-104 / n) is transmitted through a specific access network, and according to the service request signal, the ID / LOC mapper 106 allocates a service session ID according to the IP corresponding to the communication terminal 102 ( Step 306). Here, the communication terminal 102 is assigned an IP connecting to the access network through a specific interface.

In this case, the service session ID is located between the transport layer for connecting the IP and the application session, and dynamically maps to the IP that changes according to the situation to support service connectivity. In the ID / LOC mapper 106, Before allocating the service session ID with the ID / LOC mapping server 108, it is checked whether there is an already assigned service session ID, and the service from the communication terminal 102 when the service session ID does not already exist. Allocates a service session ID according to the request, and if the service session ID already exists, transmits the allocated IP information to the ID / LOC mapping server 108 to update the service session information including the pre-assigned service session ID. .

The ID / LOC mapping server 108 stores and manages the service session ID and IP information transmitted from the ID / LOC mapper 106 as service session information corresponding to the communication terminal 102 and the requested service ( Step 308). In this case, the service session information may include, for example, a terminal number, a service session ID, IP information, and the like.

Meanwhile, the ID / LOC mapper 106 transmits the service session ID assigned according to the IP corresponding to the communication terminal 102 to the application session manager 112 through the NGN core network 110, and the application session manager 112. ) Associates the application session with the service session ID transmitted from the ID / LOC mapper 106 through the NGN core network 110, and together with the service request signal transmitted from the communication terminal 102, the service providing server 114. And correspondingly, a service provided from the service providing server 114 is transmitted through the NGN core network 110 and a specific access network, and the service is provided to the communication terminal 102 through the corresponding interface (step 310).

Meanwhile, it is checked whether the communication terminal 102 moves to another access network while the service is provided to the communication terminal 102 through the corresponding interface (step 312).

As a result of the check in step 312, if the service does not move to another access network, the service is continuously provided to the communication terminal 102 through a specific access network (step 310). In step 102, the corresponding service is requested through the other of the first access network-nth access network 104 / 1-104 / n using the corresponding interface (step 314). At this time, the communication terminal 102 is assigned a new IP connecting to another access network through the interface (step 316).

In addition, the ID / LOC mapper 106 transmits the change to another access network and the assigned new IP to the ID / LOC mapping server 108 according to the corresponding service request from the communication terminal 102, thereby providing the existing service session information. In step 318, the new service session information is stored. The service session ID mapped to the new service session information is transmitted to the application session manager 112 through the NGN core network 110.

Accordingly, the application session manager 112 requests the corresponding service to the service providing server 114 by interworking the application session with the service session ID transmitted from the ID / LOC mapper 106 through the NGN core network 110. Correspondingly, the corresponding service provided from the service providing server 114 is transmitted through the NGN core network 110 and the corresponding other access network, and the service is provided to the communication terminal 102 through the corresponding interface (step 320). .

Meanwhile, another embodiment of the present invention has been described as re-requesting and providing a service through the same interface when moving to another access network. However, the service may be re-requested and provided through another interface.

Therefore, when a service is requested from a communication terminal through a specific access network in a mobile environment of a next-generation communication network, a service session ID corresponding thereto is allocated, and the service session ID is linked with an application session to provide a requested service through the corresponding access network. When moving to a network, a new IP may be allocated, new service session information may be mapped according to a change in an access network, and an application session corresponding thereto may be interworked to provide a corresponding service through another access network.

In the above description, the present invention has been described with reference to preferred embodiments, but the present invention is not necessarily limited thereto. Those skilled in the art to which the present invention pertains have various knowledge without departing from the technical spirit of the present invention. It will be readily appreciated that branch substitutions, modifications and variations are possible.

1 is a block diagram of a service providing system suitable for providing multi-homing and service mobility in a multi-interface environment of a next-generation communication network according to the present invention;

2 is a flowchart illustrating a process of providing a service requested from a terminal in a multi-homing environment of a next-generation communication network according to an embodiment of the present invention;

3 is a flowchart illustrating a process of providing a service requested from a terminal in a mobile environment of a next generation communication network according to another exemplary embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

102: communication terminal 104 / 1-104 / n: first access network-nth access network

106: ID / LOC Mapper 108: ID / LOC Mapping Server

110: NGN core network 112: application session manager

114: service providing server

Claims (13)

delete IDentifier / LOCator Mapper for allocating service session ID according to service request from communication terminal, An ID / LOC mapping server receiving the service session ID from the ID / LOC mapper and storing and managing service session information including IP information allocated to the communication terminal; Receiving the service session ID from the ID / LOC mapper and interworking it with an application session and providing a service requested from the communication terminal to the communication terminal through a service providing server; The communication terminal, when receiving the requested service through a specific interface and a specific access network corresponding thereto, if an error of the access network occurs, re-requesting the corresponding service through another interface and the corresponding other access network. Service providing system in the next generation communication network, characterized in that. IDentifier / LOCator Mapper for allocating service session ID according to service request from communication terminal, An ID / LOC mapping server receiving the service session ID from the ID / LOC mapper and storing and managing service session information including IP information allocated to the communication terminal; Receiving the service session ID from the ID / LOC mapper and interworking it with an application session and providing a service requested from the communication terminal to the communication terminal through a service providing server; When the communication terminal moves to another access network while receiving the requested service through a specific interface and a specific access network corresponding thereto, the communication terminal re-requests the corresponding service through an access network different from the corresponding interface. Service providing system in next generation communication network. The method according to claim 2 or 3, The communication terminal, when re-requesting the corresponding service through the other access network, the service providing system in the next generation communication network, characterized in that assigned to the corresponding new IP. The method according to claim 2 or 3, The ID / LOC mapper, in connection with the ID / LOC mapping server, transmits the allocated IP information to the ID / LOC mapping server when there is a service session ID previously assigned to the communication terminal. The service providing system in the next generation communication network, characterized in that for updating the service session information including the ID. The method of claim 5, The ID / LOC mapper, in connection with the ID / LOC mapping server, allocates the service session ID when there is no service session ID pre-assigned to the communication terminal. The method of claim 6, The ID / LOC mapping server stores and manages the service session information including a terminal number, the service session ID, and the IP information. As a method of providing a service in a multi-homing environment of a next-generation communication network, Allocating an IP and a service session ID according to a service request through a specific interface and a corresponding access network from the communication terminal; Storing and managing service session information including the IP and the service session ID; Providing the requested service to the communication terminal through the specific interface by interworking the service session ID with an application session; If an error of the specific access network occurs, re-requesting the corresponding service through another interface and a corresponding other access network; Checking the assigned service session ID and interworking it with an application session to provide the re-requested service to the communication terminal through the other interface; Service providing method in the next-generation communication network comprising a. The method of claim 8, The service providing method, Checking whether a pre-allocated service session ID exists before allocating the service session ID; Updating the service session information by using the allocated IP and the pre-assigned service session ID when the pre-assigned service session ID exists; Storing and managing the service session information together with the allocated IP after allocating the service session ID when the service session ID does not exist. Service providing method in the next-generation communication network comprising a. 10. The method according to claim 8 or 9, The service providing method may include allocating a new IP according to the other access network when re-requesting the corresponding service. As a method of providing a service in a mobile environment of a next-generation communication network, Allocating an IP and a service session ID according to a service request through a specific interface and a corresponding access network from the communication terminal; Storing and managing service session information including the IP and the service session ID; Providing the requested service to the communication terminal through the specific access network by interworking the service session ID with an application session; Re-requesting a corresponding service through an access network different from the specific interface when moving from the specific access network to another access network; Updating the service session information and interworking the service session ID with an application session to provide the re-requested service to the communication terminal through the other access network; Service providing method in the next-generation communication network comprising a. The method of claim 11, The service providing method, Checking whether a pre-allocated service session ID exists before allocating the service session ID; Updating the service session information by using the allocated IP and the pre-assigned service session ID when the pre-assigned service session ID exists; Storing and managing the service session information together with the allocated IP after allocating the service session ID when the service session ID does not exist. Service providing method in the next-generation communication network comprising a. 13. The method according to claim 11 or 12, The service providing method may include allocating a new IP according to the other access network when the service is requested again.

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