KR20080064380A - Methods and system for p2p-based scalable real-time mobile group communication service management in wireless networks - Google Patents

Abstract

A method and a system for p2p-based scalable real-time mobile group communication service management in wireless networks are provided to offer a group communication service management function to a user by configuring a user service group as a classified structure so that many lower level service groups can be created and controlled. A group service is created by registering a p2p based group communication service management structure and a service profile to a distribution group management table. The p2p based group communication service management structure is made up of a mobile terminal, a distribution group management table and a distribution group service management system. And the service profile defines p2p based mobile multimedia service that a service manager will provide to a group ID, a manager ID, a group level and a group. The service profile provided from a specified service group is registered as a group member through admission of a group service manager. A group member requires activation of group service to the group service manager. The group service manager sets up a group communication call to the group members through the distribution group service management system, and performs the p2p based group communication service. A multi party group communication service is supported without service disruption during movement by exchanging a changed IP address mutual to each terminal to configure a new connection in real time.

Description

P2P-based scalable real-time mobile group communication service management system and method in wireless network {Methods and System for P2P-Based Scalable Real-Time Mobile Group Communication Service Management in Wireless Networks}

1: P2P based multi-party group communication service management structure according to the present invention

Figure 2: P2P-based multi-party group communication service management protocol according to the present invention

3 is a multi-party group communication service management algorithm of a group initiator according to the present invention.

4 is a service management algorithm of a group communication service participant according to the present invention.

Fig. 5: Hierarchical group service management structure according to the present invention

Figure 6: Hierarchical group management table for hierarchical group service management according to the present invention

7: Example of P2P-based hierarchical multi-party group service configuration according to the present invention

Looking at the related art related to the present invention, broadband wireless communication networks such as IEEE 802.11n WLAN, IEEE 802.16 WiMAX, and B3G / 4G have been developed recently with the development of semiconductor technology and digital communication technology. The next generation broadband wireless communication network is expected to provide various multimedia communication services by applying the Internet All-IP technology. In the next generation wireless network, users will be able to use various IP-based multi-media services such as remote multimedia education, video conferencing, and online games on the go. Moreover, due to the development of computer technology, mobile terminals in the next generation wireless communication network communicate with P2P (Peer-to-Peer) method rather than the existing client / server method to support real-time multimedia services such as VoIP and multi-party video conferencing. It is expected to.

Multi-party group communication services such as chat provided by existing Internet portals are not P2P, and the services provided are provided by service providers, that is, ISPs (Internet Service Providers), and are not user-generated. In addition, when the mobile terminal moves, service management may occur because mobility management is not provided. The IETF XCON Working Group is currently developing a data model and conference structure to support multi-party multimedia conferencing services. However, the conference architecture developed by IETF XCON is a centralized conference server structure, which causes a problem of scalability when many users participate in the conference. Moreover, the issue of multilateral service management in wireless networks is not considered.

On the other hand, mobility management technology has been developed to support seamless handover with P2P method when mobile terminals move heterogeneous or homogeneous wireless networks. Representative international standard technologies include SIP and SCTP-ADDIP developed by IETF, TCP Migrate developed by MIT University, and SMMP developed by MS Research in Korea. P2P mobility management technology is expected to be widely used in next-generation mobile communication networks because it can provide end-to-end mobility without changing existing network infrastructure.

However, in the next generation wireless network, if a multi-party real-time mobile multimedia service is to be provided based on the P2P mobility management technology, a handover function can be provided without changing the existing network infrastructure, but there may be a problem in service scalability. . When P2P-based mobility management technology is applied, a large signaling overhead may occur because multi-party P2P communication settings need to be changed when mobile terminals participating in group communication frequently move. In particular, serious performance degradation may occur when a large number of users participate in the multilateral mobile multimedia service.

The technical problem to be achieved by the present invention is to solve the problems of the prior art as described above, the mobile terminal users such as PDA, notebook, Internet phone or smart phone in the wireless network service interruption when moving between various wireless networks ( Its purpose is to provide P2P-based real-time mobile group communication service management function that can create and manage real-time multi-media multimedia service without service disruption.

It is still another object of the present invention to create a multi-party mobile multimedia service by hierarchically configuring a user service group, and to enable a user to easily create and manage a variety of subgroup services having a function added to a given group service. To provide scalable group communication service management function.

It is still another object of the present invention to manage a multi-party mobile multimedia service by identifying a service management starter and a participant and allowing the mobile multimedia service to be provided at a host of the starter. An object of the present invention is to reduce excessive signaling overhead due to frequent movement of a terminal.

Another object of the present invention is to use the P2P-based service mobility management technology, even when the user moves between various wireless networks such as WiFi, WiMAX, CDMA, GSM, the group communication service management function without interruption of service independently of the type of wireless network To provide.

Another object of the present invention is to provide a service created by a user to a group service subscriber in a peer-to-peer manner in a mobile terminal of a user. The mobile UCS (User Created Service) is one step further from UCC (User Created Contents) currently provided in Web 2.0. ) To provide functionality.

The present invention relates to a P2P-based real-time mobile group communication service management method and system that can generate and manage a multi-media multimedia service in real time without service disruption even when a mobile terminal moves in a wireless network.

Hereinafter, the configuration and operation of the embodiments of the present invention with reference to the accompanying drawings, the configuration and operation of the present invention shown and described in the drawings will be described by at least one embodiment, whereby the present invention described above The technical idea and its core composition and operation are not limited.

With reference to the drawings shown so that the present invention can be easily understood. 1 illustrates a P2P based multi-party group communication service management structure according to the present invention. 2 shows a P2P based multi-party group communication service management protocol according to the present invention. 3 illustrates a multi-party group communication service management algorithm of a group initiator according to the present invention. 4 shows a service management algorithm of a group communication service participant according to the present invention. 5 shows a hierarchical group service management structure according to the present invention. 6 illustrates a hierarchical group management table for hierarchical group service management according to the present invention. 7 illustrates an example of a P2P-based hierarchical multi-party group service configuration according to the present invention.

1 shows a P2P based multi-party group communication service management structure. The multi-party group communication service management structure largely includes a distributed group management table for storing group service management information, a distributed group service management system for managing distributed group management tables, and a regional group management table for storing group service management information locally in a mobile terminal. And group service management protocols. The group service management protocol is a protocol for efficiently creating and operating a multi-party mobile group multimedia service with reference to the distributed group management table and the regional group management table.

Distributed group service management system is a distributed database system that stores and manages multilateral group service management information. The distributed group service management system can be implemented in various ways such as building various commercial distributed database systems, extending existing SIP Proxy / Registrar servers, DNS servers, LDAP servers, or dedicated P2P servers. This patent does not deal with the implementation of distributed group service management system. The distributed group management table is a database that stores information for managing multilateral communication services in a distributed environment. The distributed group management table is organized hierarchically and provides grouping information for users to group and configure various user-based mobile services. The distributed group management table consists of group ID, manager, starter, member list, service profile, group level and location information.

In this patent, a service group means a set of users who register with a specific mobile multimedia service such as mobile video conferencing. The group ID is an identifier representing a specific service group. The custodian is the user who creates mobile multimedia services and has overall responsibility and authority for service operations. The service group manager defines a service profile for the mobile multimedia application service provided by the group. The service profile specifies the function of the application service and the characteristics of the application. For example, features of various real-time mobile multimedia applications, such as multi-party video conferencing, remote multi-line online gaming, multi-party text chat, and multi-party video sharing, are specified in the service profile. Group service initiator (Initiator) is a user who starts and operates a group service by being authorized by the group service manager. The group initiator can be any group member and is designated by the group administrator. However, only one group initiator is allowed in most cases for effective and simple group service operation. However, in special cases, multiple starters can exist.

The member list contains a list of users belonging to the group. In case of hierarchical distributed group management table, subgroup list information included in group is included. Users can refer to the distributed group management table to participate in a service for a specific field of interest. The location information indicates the current geographical location of the group starter providing the service and is optional. The regional group management table stores and manages information such as the current IP address and quality of service (QoS) requirements of group members and members participating in multi-party group communication in order to maintain end-to-end seamless service even while moving between terminals. It is a fast temporary information store.

2 shows a P2P based multi-party group communication service management protocol. The multi-party group communication service management system generally includes a distributed group management table, a distributed group service management system for managing it, a group application service and a local group management table in the user terminal. As mentioned above, the distributed group management table includes a group ID that is an identifier of a group, an ID that is a starter of a group, a member ID list that represents a member of a group, and a service profile indicating an application service provided by the group. In FIG. 2, User A is the starter of Group 1, a service group that provides a multi-party video conferencing service. Multi-party video conferencing services are provided at User A's host. The host of user A has a regional group management table that contains member information of group 1. If user A's host is not capable of performing group video conferencing services, a distributed service management system or other site may provide host A's application services.

In FIG. 2, user A first registers the characteristics of the multiparty application service that can be provided by the current host in the distributed group management table. Users B, C, and D register with group 1 when they want to participate in group service by referring to service profile of group 1. In FIG. 1, it is assumed that users A, B, C, and D use mobile terminals A, B, C, and D, respectively. At this time, the mobile terminals A, B, C, and D belong to the same group. When user A wants to provide multi-group group communication (in this case, multi-party video conferencing) service with users belonging to group 1, user A starts an application service to be provided by terminal A, and then the service profile to be provided by terminal A and current status of terminal A Send the group call setup request message ① containing the IP address to the distributed group service management system. After receiving ①, the distributed group service management system sends a group call setup request message ② to group 1 members B, C, and D to the group 1 members registered in the distributed group management table. At this time, the group call setup request message includes a group ID, a user ID of the starter, an IP address of the current access point, and a service profile.

If the group members want to participate in the group service, the group members send a group call setup response message ③ including the current IP address of the mobile station and other QoS requirements to the distributed group service management system. The distributed group service management system forwards the response message④ containing the participation in the service received from the members and the member's current IP address to user A, the group communication initiator. The group members then participate in the multi-media multimedia application service operated by A while operating in a P2P manner with A, the group's start. The distributed group service management system may store the current IP addresses of group members in the group management system for end-to-end mobility management by referring to the group call setup response message ③. In FIG. 1, thick double-headed arrows between mobile terminals indicate data communication of a P2P method.

Here, A, the group communication starter, is responsible for the operation and management of the multilateral group communication for the group communication. Unlike existing web-based centralized internet portals, group members participate in group communication services provided by group initiators in a peer-to-peer manner. In addition to the video conferencing mentioned above, users can actively participate in various multi-media multimedia application services such as real-time sports, online games, and online lectures. Of course, 1: 1 communication is possible when there is only one group member.

When a member moves in the wireless network, the mobile terminal immediately informs the initiator of the changed IP address. In FIG. 1, when the terminal D moves, the new IP address connected after the transfer is sent to the group starter A and the distributed group service management system in the address update message. Starter A modifies the contents of the local group management table and then sends data to the changed IP address after moving with D. When the terminal of the group initiator moves, the initiator informs all members currently participating in the group communication of the changed IP address. By doing so, even if the terminal moves, the multi-party multimedia service can be continuously performed without interruption of service due to handover between the mobile member and the operator.

As such, when a group communication service initiator sets up a group communication call with group members and performs a P2P-based group communication service, a multi-party mobile multimedia service establishes a one-to-many communication path between the initiator and the mobile terminal, By providing the host at the initiator, it is possible to reduce excessive signaling overhead due to frequent movement of the mobile terminal, which may occur in P2P based multi-party multimedia communication.

The difference between this patent and a multi-party group communication service such as chat provided by an existing Internet portal is that the group communication service is not provided by an Internet service provider, that is, an ISP (Internet Service Provider), but is made and provided by a user. This is a UCS (User Created Service) concept that takes the next level of UCC (User Created Service) available in Web 2.0. The second difference is that the services created by these users are provided to the group service subscribers in a P2P manner in the user's mobile terminal. In particular, by providing mobility management function of P2P method while moving, users can perform multi-party group communication such as video conferencing without disconnection even when moving between heterogeneous or homogeneous wireless networks. The third difference is that by applying the hierarchical group management table, which will be described later, service extensibility is provided for users to participate in various mobile application service groups.

3 is a multi-party group communication service management algorithm of a group initiator. First, the initiator who wants to start the group service requests the group service manager to authenticate for the start of the group service. You can also use international standard authentication servers such as Radius or Diameter. A starter can download an application service program necessary for providing a multilateral multimedia service from a distributed group service management system by referring to a service profile. Users who want to join the group register in the distributed group management table by referring to the service profile provided by the group. The initiator first sends a group call setup request message to the distributed group service management system to start the group communication service. After receiving the group call setup request from the mobile terminal, the distributed group service management system refers to the distributed group management table and sends a call setup request message to all mobile terminals registered in the group on behalf of the group communication call originator. If the group member is not a user but a subgroup, refer to the hierarchical distributed group management table to recursively identify all subgroups belonging to all sub hierarchies to all group member users belonging to each subgroup. Sends a group call setup message. The mobile terminal receiving the group call setup message from the distributed group service management system sends a call setup response message to the group service initiator through the distributed group service management system. The group service initiator performs multi-party mobile multimedia communication in a peer-to-peer manner with all mobile terminals that want to participate in group communication after adjusting QoS, etc., based on the response received from the distributed group service management system.

If the mobile terminal participating in the group communication moves, other mobile terminals participating in the group do not need to be informed of the fact of the movement, but simply inform the group initiator of the new IP address to be used after the movement. The group initiator updates the contents of the regional group management table so that P2P communication with the changed IP address is made after the move. In this way, P2P signaling overhead due to the movement of the mobile station can be reduced. If a mobile terminal performs a multi-party communication service by separately setting up P2P communication with all group participating users, signaling overhead for mobility management can be enormous. When the group service initiator has moved, all the terminals participating in the group communication are notified of the changed IP address. If the group initiator frequently moves, the signaling overhead according to the movement cannot be ignored, but the signaling overhead is smaller than that of the P2P type multi-party communication in which a 1: 1 communication path is established between all terminals. In general, group service initiators should be able to manage M: N group communication, so it is preferable to use mobile terminals with large CPU performance or memory capacity. desirable. In addition, the Initiator manages the participation of group communication service from the group member or reentry by modifying the contents of the regional group management table.

4 is a service management algorithm of a group communication service participant. In FIG. 4, when a call establishment request message is received from the group service initiator through the distributed group service management system, the participant stores the initiator's current IP address and service profile in the regional group management table. After checking the security and QoS requirements from the initiator, if possible, the call setup response message is sent to the distributed group service management system. Otherwise, the QoS requirements that the participant can provide are included in the response message to the distributed group service management system. To pass. The distributed group service management system forwards the call setup response message to the group initiator. At this point, the group initiator can determine whether the participant has sent the QoS requirements and deliver an acknowledgment message to the participant. This acknowledgment is treated as optional. Afterwards, the group participants and the initiators exchange data using P2P method using the currently connected IP.

If the IP address is changed due to the movement of the terminal, the mobile terminal immediately informs the group initiator and the distributed group service management system of the change using an address update message. The initiator who receives the address update message containing the changed IP address reflects the changed IP address in the local group management table. After that, the starter and the participant communicate by P2P method using the changed IP address, so that handover, that is, mobility management, is supported for the movement of the mobile terminal. The distributed group service management system receiving the address update message reflects the changed IP address in the distributed group management table so that the mobile terminal can communicate with other members using the changed IP address.

In FIG. 4, when the participant stops participating in the group service for a while, the service participation stop message is sent to the starter. In FIG. 3, when the starter receives a stop message, the starter temporarily stops communication with the corresponding mobile terminal. If a participant wishes to resume group communication, send a re-entry message to the initiator. At this time, if the IP address of the participant's mobile terminal is changed, the participant sends the changed IP address to the reentry message. In FIG. 3, when the starter receives the reentry message, the initiator changes the relevant contents of the regional group management table and resumes communication with the mobile terminal.

5 shows a hierarchical group service management structure. All users belong to the root group and have the authority to use the services provided by the root group. In the hierarchical group service management structure of FIG. 5, users belonging to the lower group are automatically allowed to participate in the group service provided by the upper group, Users belonging to a group do not automatically participate in the multilateral multimedia communication service provided by subgroups. For example, a user registered in a 2nd level multi-party video sharing service group is not allowed to participate in a 3rd level real-time multi-party video conferencing group. Users can flexibly create service groups by referring to hierarchical services provided by distributed group service management systems. A user may create and use a specific multilateral mobile application service by referring to a service profile of a distributed group service management system root group. In this case, the user must be registered in the relevant group, and detailed program specifications including the source code must be disclosed in the service profile. In general, it is preferable to develop a program used to implement a group service using a platform independent programming language so that various mobile terminals can be operated on a platform.

FIG. 6 shows a hierarchical distributed group management table for realizing hierarchical service management of FIG. 5. Hierarchical management tables make it easy to create and manage service groups hierarchically. As mentioned above, a group manager is a user who manages and manages the group such as services, contents, and participation rules provided by the group. The group initiator is a user who starts the current group service and is in charge of operation by receiving authority from the group administrator. For example, if you run a real-time mobile multi-party video conferencing service, the administrator defines and manages the service. A starter is a member of a group who refers to a user who starts and conducts a video conference at a specific point in time.

Groups are dynamically created by users who are interested in a particular topic or service and are destroyed when there is no activity. The mobile terminal users can freely participate by applying for registration in the service group. The local group management table of the mobile terminal may include the presence information indicating the group start position or the current state with reference to the contents of the distributed group management table. And by not limiting the Group Level, the user can freely create a variety of specialized and highly detailed service groups, thus providing great service extensibility.

When the distributed group service management system updates the contents of the distributed group management table by referring to the call setup request message from the initiator, and then delivers the group call setup message to the members who have joined the group, as shown in FIG. In case of a subgroup instead of a user, all users belonging to the lower hierarchy are identified and the group call setup message is delivered. If the member of the subgroup is not a member user but a lower subgroup, all the users belonging to the lower subclass are identified again and the group call setting message is transmitted. All users in all subgroups are identified recursively in this way.

An embodiment according to the present invention will be described with reference to the drawings. P2P-based scalable real-time mobile group communication service management system and method in the wireless network proposed by the present invention are IEEE 802.11 wireless LAN, IEEE 802.16 wireless network other similar WLAN / man, wireless mesh network or wireless multi-hop network, wireless It can be applied to the next generation wired / wireless converged network connected with various heterogeneous wireless networks and homogeneous networks such as sensor network and cellular network. 7 shows an example of P2P-based hierarchical multi-party group service configuration.

In FIG. 7, the root group includes two 2nd level groups, groups 2 and 3, and the group 2 includes two 3rd level groups, groups 4 and 5. These hierarchical groups are managed by distributed group management tables. In FIG. 7, the manager of each group plays the role of a starter, and the multi-party mobile multimedia service provided by the starter in each group is indicated by an asterisk. Each group provides multi-media multimedia service by service profile defined by group manager. In FIG. 7, each subgroup member is automatically allowed to participate in the upper group, but the upper group member may register only in the lower group. For example, members J, K, and L of Group 5 may participate in services provided by Group 2 in addition to the multi-media multimedia services provided by I. However, members M and N of group 2 cannot participate in group 5.

In FIG. 7, the starter of group 2 is user A and the starter of group 4 is user A. Here, user A may provide services to all group 2 members, and may also provide the same group service separately to a specific small group, group 4. In other words, various levels of group composition are possible without changing the group service profile. By creating an independent relationship between these groups and services, one service can be managed in small groups across multiple layers, providing flexibility in group service management. In addition, each group member performs group communication in a P2P manner, and of course, when a member moves, no handover is supported between the mobile member and the service starter. In conclusion, this hierarchical service management structure provides great service scalability and flexibility for user group composition in multi-level real-time mobile multimedia service management in distributed environment.

Summary of the Invention P2P-based Scalable Real-time Mobile Group Communication Service Management in Wireless Network In the wireless network, in a P2P-based group communication service management system for the generation, operation and management of multi-party mobile multimedia services, a) Wireless network In order to perform distributed group service management and P2P-based group communication service structure composed of distributed group service management system for mobile terminal, distributed group management table and distributed group management table, the group service manager has group ID, manager ID, Means for creating a group service by registering a service profile defining a group level and a P2P based mobile multimedia service to be provided in a group in a distributed group management table; b) A user who participates in the group searches the distributed group management table to review the service profile provided by a specific service group, requests the group service manager to join the group, and the group service manager approves the registration to register as a group member. Way; c) The group member requests the group service manager to activate the group service, and the group service manager reviews the request and designates the requested group member as the group communication service initiator, and the group communication service initiator through the distributed group service management system. Means for establishing a group communication call with the group members and performing a P2P based group communication service; d) means for supporting a multi-party group communication service without interruption of service by interrupting service movement by establishing a new connection in real time by exchanging changed IP addresses with each other when the network access point of a group member or a starter is changed during the movement; and When the mobile terminal moves, the group member suspends participation in the multilateral group service in progress, or when the mobile terminal requests re-participation, it is a means for allowing the group member to participate in the group service.

The means for generating a group service by registering in the distributed group management table configures and manages a distributed group management table hierarchically, and a group service having a lower group level is generated by extending an upper group service profile, and a lower group member It is characterized in that the group communication service is automatically registered to the upper group members, and by limiting the group level is made of a means to support the flexible and scalable creation and management of various service groups, the group communication service initiator The means for establishing group communication call with group members and performing P2P based group communication service through distributed group service management system is to establish one-to-many communication path between starter and mobile terminal and establish multi-way service. P2P-based multiparty by allowing it to be served from the initiator's host Characterized in that to reduce the excessive signaling overhead according to the frequent movement of the mobile terminal that can occur in a multimedia communication.

The group communication service initiator sets up a group communication call with group members through a distributed group service management system, and means for performing P2P-based group communication services include a service profile of the initiator of the group initiator, a current IP address, and a geographical area. The group call setup request message containing the location is sent to the distributed group service management system. The distributed group service management system updates the contents of the distributed group management table with reference to the call setup request message, and then sends it to the members who have joined the group. Characterized in that the group call setting message is delivered, wherein the group communication service initiator establishes a group communication call with the group members through a distributed group service management system and means for performing a P2P-based group communication service The group members who receive the message are the group containing the access point IP address of the mobile terminal and whether to participate in the group service. The setup response message is sent to the distributed group service management system, and the distributed group service management system sends a response message containing the service participation from the members and the member's current IP address to the group communication initiator so that the group initiator and the group members receive the response message. It is characterized by communicating in a P2P manner.

The distributed group service management system updates the contents of the distributed group management table by referring to the call setup request message and then transmits the group call setup message to the members who have joined the group. In this case, the group call setting message is delivered to all group member users belonging to each subgroup by recursively grasping all subgroups belonging to all sub hierarchies by referring to the hierarchical distributed group management table. When the network access point of the group member or the starter is changed during the movement, the means for supporting the multi-party group communication service without interruption of the service is established by exchanging the changed IP addresses with each other and establishing a new connection in real time. One mobile terminal immediately sends the changed IP address to the initiator and distributed group service management system. In other words, the initiator modifies the contents of the regional group management table and sends the data to the changed IP address.If the terminal of the group initiator is moved, the initiator has changed the IP address to all members currently participating in group communication. By notifying, even if the mobile terminal is characterized in that it supports mobility management without interruption of service between the mobile member and the starter.

The present invention can perform scalable mobile service management when mobile terminal users such as wireless communication terminals, PDAs, laptops, Internet phones or smart phones move between various wireless networks such as WiFi, WiMAX, CDMA, and GSM. The industrial applicability is very high because they have the effect of directly generating various real-time mobile multimedia.

The present invention is a P2P-based system that can create and manage multi-media multimedia services in real time without service disruption when mobile terminal users such as PDA, notebook, Internet phone or smart phone move between various wireless networks in wireless network. Has the effect of granting the real-time mobile group communication service management function.

Another effect of the present invention is to construct a user service group hierarchically in a method for creating a multi-party mobile multimedia service, and to allow a user to easily create and manage a variety of subgroup services having a function added to a given group service. It provides a scalable group communication service management function.

Another effect of the present invention is to distinguish between a service management initiator and a participant in a method of managing a multi-party mobile multimedia service, and to enable a mobile multimedia service to be provided by a host of a mobile terminal. There is an effect of reducing excessive signaling overhead due to frequent movement.

Another effect of the present invention is to use the P2P-based service mobility management technology, even when the user moves between various wireless networks such as WiFi, WiMAX, CDMA, GSM, the group communication service management function without service interruption independently of the type of wireless network It provides a working effect.

Claims (14)

In the P2P-based group communication service management method for the generation, operation and management of multi-party mobile multimedia service in a wireless network, In order to perform distributed group service management and P2P-based group communication service structure composed of distributed group service management system for mobile terminal, distributed group management table and distributed group management table in wireless network, group service manager is group ID and manager. Creating a group service by registering a service profile defining an ID, a group level, and a P2P-based mobile multimedia service to be provided in a group in a distributed group management table; Searching a distributed group management table to review a service profile provided by a specific service group, requesting a group service manager to join a group, and registering the group as a group member by a group service manager; The group member requests the group service manager to activate the group service. The group service manager reviews the request and designates the requested group member as the group communication service initiator. The group communication service initiator is the group member through the distributed group service management system. Establishing a group communication call with each other and performing a P2P based group communication service; When the network access point of the group member or the starter is changed during the movement, exchanging the changed IP addresses with each other to establish a new connection in real time to support the multi-party group communication service without interruption of the service during the movement; And P2P-based real-time mobile group communication service management method comprising the step of performing a meeting management in real time, such as suspending the ongoing multi-party group service participation or request to re-engagement when the mobile terminal moves. The method according to claim 1, In the step of creating a group service by registering in the distributed group management table, the distributed group management table is hierarchically organized and managed. The group service having a lower group level is created by extending the upper group service profile, and the lower group member is a parent. P2P based real-time mobile group communication service management method consisting of automatically registering with group members and supporting various service groups in a flexible and scalable manner by not limiting the group level. The method according to claim 1, The group communication service starter establishes a group communication call with group members through a distributed group service management system, and performs a P2P based group communication service in a one-to-many communication between the starter and the mobile terminal. P2P-based real-time mobile group communication consisting of reducing excessive signaling overhead due to frequent movement of mobile terminals that can occur in P2P-based multi-media multimedia communication by setting up a route and enabling a multi-party service to be provided at a host of a initiator. How to manage your services. The method according to claim 1, The group communication service initiator sets up a group communication call with group members through a distributed group service management system, and performs a P2P-based group communication service. The group initiator starts a service profile, a current IP address, and a geographical location. The group call setup request message is sent to the distributed group service management system. The distributed group service management system updates the contents of the distributed group management table by referring to the call setup request message, and then sends a group call setup message to the members who have joined the group. P2P-based real-time mobile group communication service management method comprising the steps of delivering. The method according to claim 1, The group communication service starter establishes a group communication call with group members through a distributed group service management system and performs a P2P-based group communication service. The group members receiving the group call setup message are currently connected to the mobile terminal. Sends a group call setup response message including IP address and group service participation to the distributed group service management system, and the distributed group service management system starts a group communication message including whether the service is received from members and the member's current IP address. P2P-based real-time mobile group communication service management method comprising the steps of communicating to the group initiator and group members in a P2P manner. The method according to claim 1 or 4, The distributed group service management system updates the contents of the distributed group management table by referring to the call setup request message and then delivers the group call setup message to the members who have joined the group. In this case, P2P consists of referencing hierarchical distributed group management table and recursively grasping all subgroups belonging to all sub hierarchies and delivering group call setup message to all group member users belonging to each subgroup. Based real-time mobile group communication service management method. The method according to claim 1, When the mobile terminal of the group member or the starter is changed during the movement, the step of supporting the multi-party group communication service without interruption of the service is established by exchanging the changed IP addresses with each other and establishing a new connection in real time. The terminal immediately sends the changed IP address to the initiator and the distributed group service management system, and the initiator modifies the contents of the regional group management table and transmits the data to the changed IP address. P2P-based real-time mobile group communication consisting of the step of supporting the mobility management without interruption of service between the mobile member and the starter, even if the terminal is moved, the starter notifies all members currently participating in the group communication by changing the IP address. How to manage your services. In the P2P based group communication service management system for the generation, operation and management of multi-party mobile multimedia service in wireless network, In order to perform distributed group service management and P2P based group communication service structure consisting of distributed group service management system for mobile terminal, distributed group management table and distributed group management table in wireless network, group service manager is group ID and manager. Means for creating a group service by registering a service profile defining an ID, a group level, and a P2P-based mobile multimedia service to be provided in a group in a distributed group management table; Means to search the distributed group management table to review the service profile provided by a specific service group, ask the group service manager to join the group, and the group service manager approves the subscription to register as a group member; , The group member requests the group service manager to activate the group service. The group service manager reviews the request and designates the requested group member as the group communication service initiator. The group communication service initiator is the group member through the distributed group service management system. Means for establishing a group communication call and performing a P2P based group communication service, Means for supporting multi-party group communication service without interruption of service by interrupting service movement by establishing new connection in real time by exchanging changed IP addresses with each other when network access point of group member or starter is changed while moving. P2P-based real-time mobile group communication service management system comprising a means for performing meeting management in real time, such as suspending participation in multi-party group service, or requesting re-participation, when the mobile terminal is in progress. The method according to claim 8, The means for creating a group service by registering in the distributed group management table is to organize and manage the distributed group management table hierarchically.The group service whose group level is lower is created by extending the upper group service profile, and the lower group member is the upper level. P2P-based real-time mobile group communication service management system, which is a means of automatically registering with group members and supporting various service groups in a flexible and scalable manner by not limiting the group level. The method according to claim 8, The group communication service initiator establishes a group communication call with group members through a distributed group service management system, and means for performing P2P-based group communication service is a one-to-many communication between a multi-media mobile multimedia service initiator and a mobile terminal. P2P-based real-time mobile group communication service management, which consists of a means to reduce excessive signaling overhead due to frequent movement of mobile terminals by establishing a route and having the multi-party service provided by the initiator's host. system. The method according to claim 8, The group communication service initiator sets up a group communication call with group members through a distributed group service management system, and means for performing a P2P-based group communication service includes a service profile of the initiator of the group initiator, a current IP address, and a geographical area. The group call setup request message containing the location is sent to the distributed group service management system. The distributed group service management system updates the contents of the distributed group management table by referring to the call setup request message and then sends the group to the members who have joined the group. P2P based real-time mobile group communication service management system composed of means for delivering call setup messages. The method according to claim 8, The group communication service starter establishes a group communication call with group members through a distributed group service management system, and means for performing P2P-based group communication service means that the group members receiving the group call setting message are currently connected to the mobile terminal. Sends a group call setup response message including IP address and group service participation to the distributed group service management system, and the distributed group service management system starts a group communication message including whether the service is received from members and the member's current IP address. P2P-based real-time mobile group communication service management system comprising the steps of communicating to the group initiator and group members in a P2P manner. The method according to claim 8 or 11, The distributed group service management system updates the contents of the distributed group management table by referring to the call setup request message and then transmits the group call setup message to the members who have joined the group. In this case, P2P consists of a means of recursively identifying all subgroups belonging to all sublayers by referring to the hierarchical distributed group management table and delivering group call setting messages to all group member users of each subgroup. Based real-time mobile group communication service management system. The method according to claim 8, When the group member or the starter's mobile terminal changes its network access point while moving, the means for supporting multi-party group communication service without interruption of service by moving the changed IP address to each other and establishing a new connection in real time is moved. The terminal immediately sends the changed IP address to the initiator and the distributed group service management system, and the initiator modifies the contents of the regional group management table and transmits the data to the changed IP address. P2P-based real-time mobile group communication service composed of means for supporting mobility management without interruption of service between mobile member and starter even if terminal moves by notifying the changed IP address to all members currently participating in group communication. Management system.

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