KR100451438B1 - Method for registrating and removing buddy list of presence service based sip in the mobile packet network - Google Patents

Abstract

The present invention relates to a method of registering and deleting a friend of a SIP-based presence service in a mobile communication packet network. In particular, the friend registration method of the present invention registers an IP to a mobile communication packet network in a first mobile communication terminal and registers a SIP in a SIP server. Send a registration request message of the second mobile communication terminal to receive the presence service from the first mobile communication terminal to the SIP server, and add the second mobile communication terminal to the friend list of the first mobile communication terminal from the SIP server; The SIP server checks whether the second mobile communication target of the presence service requested by the first mobile communication terminal is currently online, and if it is online, the SIP server presents the presence service to the second mobile communication terminal of the presence service. If the permission message is sent and the SIP server receives the permission response from the second mobile communication terminal, the second mobile communication The first mobile communication terminal is registered in the friend list of the terminal, and when the rejection response is received, the second mobile communication terminal is registered offline in the friend list of the first mobile communication terminal. Accordingly, the present invention registers or deletes another user who wants to know the communication status at the mobile terminal and the SIP server for a SIP-based presence service in a friend list in a mobile communication network in which resources are limited unlike the wired network. The procedure of redialing or exchanging messages due to the absence of the user can be easily reduced, thereby increasing the convenience of the user.

Description

METHOD FOR REGISTRATING AND REMOVING BUDDY LIST OF PRESENCE SERVICE BASED SIP IN THE MOBILE PACKET NETWORK}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication service technology. In particular, the present invention is based on a Session Initiation Protocol (SIP) in a mobile communication packet network such as Code Division Multiple Access (CDMA) 2000 and Wideband-CDMA (WCDMA). The present invention relates to a method of registering and deleting another user who wants to know a communication state in a presence service.

SIP is one of the protocol technologies for realizing Voice over IP [Internet Protocol] (VOIP) service. It is an Internet standard development organization to replace H.323 standard technology adopted by most commercial Internet telephony services. Next-generation protocol developed by the Internet Engineering Task Force (IETF). SIP technology is an application layer call signaling protocol that provides multimedia session establishment, session information exchange and termination functions, and is essential for developing various next generation Internet applications such as Internet telephony and multimedia messaging. SIP technology has become a core standard technology for instant messaging and presence services, which is emerging as a new next-generation killer application after the web as well as Internet telephony, and is adopted as a call control protocol in 3rd generation mobile communication services. Globally, R & D and standardization of related technologies is currently active. Currently, the development of SIP-based equipment and services is competitively pursued worldwide.

On the other hand, the absence of the other party in the mobile communication that emphasizes the real-time gives the inconvenience that the user must re-send a number of times. Therefore, in order to increase the success rate of the call, the necessity of the presence service to confirm the presence of the other party is emerging.

Therefore, unlike a wired network, in a resource-limited mobile communication network, research / development of a technology for reducing a procedure of redialing or exchanging messages due to the absence of a counterpart is required by utilizing such a SIP-based presence service.

An object of the present invention is to solve the problems of the prior art in the mobile communication network by registering or deleting the other user who wants to know the communication status in the mobile terminal and the SIP server for the SIP-based presence service in the friend list An instant messaging service is provided to provide a method of registering and deleting friends of a SIP-based presence service in a mobile communication packet network, which can easily reduce a procedure of redialing or exchanging messages due to an absence of a user.

In order to achieve the above object, a friend registration method of a SIP-based presence service in a mobile communication packet network of the present invention is a method for providing a presence service for notifying an online state of a user in a SIP-based mobile communication packet network. Registering an IP with a mobile communication packet network in a communication terminal and registering a SIP in a SIP server; transmitting a registration request message of a second mobile communication terminal for receiving a presence service from the first mobile communication terminal to the SIP server; Adding a second mobile communication terminal to a friend list of the first mobile communication terminal and notifying the first mobile communication terminal to the friend list of the first mobile communication terminal, and the second mobile communication of the presence service target requested by the first mobile communication terminal in the SIP server; Checking whether the terminal is currently online, and if the terminal is online, the SIP server Transmitting the presence service permission message to the target second mobile communication terminal; registering the first mobile communication terminal in a friend list of the second mobile communication terminal when receiving a permission response from the second mobile communication terminal in the SIP server; In response to the rejection response, the method may include registering the second mobile communication terminal offline in a friend list of the first mobile communication terminal.

In order to achieve the above object, a method of deleting a friend of a SIP-based presence service in a mobile communication packet network of the present invention is a method for providing a presence service for notifying an online status of a user in a SIP-based mobile communication packet network. Registering an IP with a mobile communication packet network in a communication terminal and registering a SIP in a SIP server, and transmitting a deletion request message of a second mobile communication terminal for releasing the presence service from the first mobile communication terminal to the SIP server; And deleting the second mobile communication terminal from the SIP server on the friend list of the first mobile communication terminal and notifying the first mobile communication terminal of the second mobile communication terminal.

1 is a configuration diagram of a CDMA2000 network for explaining a friend registration and deletion method of a SIP-based presence service according to an embodiment of the present invention;

2 is a diagram illustrating an example of a friend registration procedure of a SIP-based presence service in the CDMA2000 network of FIG. 1;

3 is a diagram illustrating an example of a friend deletion process of a SIP-based presence service in the CDMA2000 network of FIG. 1;

4 is a configuration diagram of a WCDMA network for explaining a friend registration and deletion method of a SIP-based presence service according to another embodiment of the present invention;

5 is a diagram illustrating an example of a friend registration procedure of a SIP-based presence service in the WCDMA network of FIG. 4, and FIG. 6 is a diagram illustrating an example of a friend deletion process of a SIP-based presence service in the WDMA network of FIG. 4.

<Description of the code | symbol about the principal part of drawing>

10, 100: first mobile communication terminal 12, 102: second mobile communication terminal

30: wireless data communication network 31, 32: BSC

33, 34: PDSN 36: HA

40, 130: SIP server 120: core packet service network

121, 122: RNC 123, 124: SGSN

126: GGSN

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

1 is a block diagram of a CDMA2000 network for explaining a friend registration and deletion method of a SIP-based presence service according to an embodiment of the present invention. Referring to FIG. 1, the CDMA2000 packet network to which the present invention is applied includes mobile communication terminals 10 and 12, wireless repeaters 20 and 22, wireless data communication network 30 and a SIP server to implement a SIP-based presence service. 40) is configured. The wireless data communication network 30 largely includes a base station controller (BSC) 31 and 32, a packet data service node (PDSN) 33 and 34, and a home agent (HA). Here, the wireless data communication network 30 BSCs 31 and 32 set up a wireless channel, and PDSNs 33 and 34 set up a Mobile IP registration and IP route, and exchange call processing signaling with the SIP server 40. Make it possible. In addition, HA is an agent that stores information of a mobile terminal user such as an IP address, and when a user registered to the network is informed of access from the PDSN (33, 34) of the packet network when the user accesses the packet network, the information of the user is provided. do.

The SIP server 40 supports the presence service based on SIP between mobile communication terminals by performing call exchange and call processing for the mobile communication terminals 10 and 12 connected to the mobile IP through the wireless data communication network 30. do.

FIG. 2 is a diagram illustrating an example of a friend registration procedure of a SIP-based presence service in the CDMA2000 network of FIG. 1. A friend registration method of a SIP-based presence service in a CDMA2000 packet network according to the present invention will be described with reference to FIGS. 1 and 2 as follows.

First, when requesting a friend registration of a SIP-based presence service, the first mobile communication terminal 10 establishes a traffic channel through the BSC 31 of the wireless data communication network 30 of the CDMA2000 mobile communication packet network. In addition, PPP (Point-to-Point Protocol) is set in PDSN 33 to inform mobile IP service. In addition, the PDSN 33 performs the mobile IP registration procedure of the first mobile communication terminal 10 to register the HA 36 of the wireless data communication network 30 with an IP address, thereby obtaining an Always On state. By holding the packet, the packet can be always received (S10).

The first mobile communication terminal 10 receives a response by requesting a SIP registration to the SIP server 40 through the wireless data communication network 30. When the SIP server 40 registers the SIP of the first mobile communication terminal 10 (S12), friend registration of the presence service of the present invention is enabled. In addition, when the user A of the first mobile communication terminal 10 registers the user B of the second mobile communication terminal 12 as a friend of the presence service, the second mobile communication terminal 12 also has an IP as in steps S10 and S12. The registration and SIP registration (S11, S13) procedures should be cleared and brought online.

A user A of the first mobile communication terminal 10 transmits a registration request message to the SIP server 40 in order to register user B of the second mobile communication terminal 12 as a friend of the presence service. The second mobile communication terminal 12 for the presence service is composed of one terminal or at least two terminal groups. Therefore, the registration request message includes an identifier of a mobile communication terminal or an identifier of a terminal group corresponding to user B, which is a friend. In the SIP server 40, the registration request friend is transmitted to the presence service friend list of the first mobile communication terminal 10. The user B or the group identifier of the second mobile communication terminal 12 is added and stored (S16). The first mobile communication terminal 10 indicates that the second mobile communication terminal 12 is registered as a friend in the presence service friend list. ) And receive permission from the first mobile communication terminal 10 (S18).

In addition, the SIP server 40 determines whether the SIP of the second mobile communication terminal 12 is registered, and the second mobile communication terminal 12 of the presence service object requested by the first mobile communication terminal 10 is currently online ( Online) check the status (S20).

If the second mobile communication terminal 12 is in an online state as a result of the determination of S20, the SIP server 40 sends the identifier of the first mobile communication terminal 10 to the second mobile communication terminal 12 of the presence service target. The presence service permission message including the transmission is transmitted (S22).

In the second mobile communication terminal 12, the presence service permission message for the first mobile communication terminal 10 transmitted from the SIP server 40 is displayed, and user B adds user A to the friend list of his presence service. Determine whether to add (S24)

When the permission response S25 is transmitted from the second mobile communication terminal 12 to the SIP server 40, the SIP server 40 transmits the first mobile communication to the presence service friend list of the second mobile communication terminal 12. The identifier of the terminal 10 is added and stored (S26). The second mobile communication terminal 12 notifies that the first mobile communication terminal 10 is registered as a friend in the presence service friend list.

If the rejection response (S27) is transmitted from the second mobile communication terminal 12 to the SIP server 40, the SIP server 40 is registered with the presence service friend list of the first mobile communication terminal 10. 2 The mobile communication terminal 12 is registered offline and notified to the first mobile communication terminal 10. (S28) When the second mobile communication terminal 12 is not online, as a result of the determination of S20. The SIP server 40 enters the standby state until the second mobile communication terminal 12 lights up the IP registration and SIP registration (S11, S13) procedures as in steps S10 and S12 and comes online with the SIP server 40. . If it is in the online state, the above-described steps of S22 to S28 are performed.

3 is a diagram illustrating an example of a friend deletion process of a SIP-based presence service in the CDMA2000 network of FIG. 1. A method of deleting a friend of a SIP-based presence service in a CDMA2000 packet network according to the present invention will be described with reference to FIGS. 1 and 3 as follows.

First, when requesting to delete a friend of the SIP-based presence service, the first mobile communication terminal 10 establishes a traffic channel through the BSC 31 of the wireless data communication network 30 of CDMA2000, which is a mobile communication packet network, and establishes a PDSN ( Through the 33) performs the mobile IP registration procedure of the first mobile communication terminal 10 to register with the HA 36 of the wireless data communication network 30, the IP address is allocated and remains always on by always receiving the packet. Make it possible. In addition, the first mobile communication terminal 10 requests SIP registration to the SIP server 40 through the wireless data communication network 30, and the SIP server 40 performs the SIP registration procedure of the first mobile communication terminal 10. (S40) If IP and SIP are registered as in S40, the friend of the presence service of the present invention can be deleted. A request message for deleting the second mobile communication terminal 12 from the friend list of the presence service is transmitted from the first mobile communication terminal 10 to the SIP server 40 (S42). The two mobile communication terminals 12 are composed of one terminal or at least two terminal groups. Therefore, the deletion request message should include the single identifier of the second mobile communication terminal 12 or the identifier of the group of terminals corresponding to the user B as a friend.

The SIP server 40 deletes the identifier of the second mobile communication terminal 12 registered in the friend list of the first mobile communication terminal 10. In addition, the first mobile communication terminal 10 is notified that the second mobile communication terminal 12 registered in the presence service friend list has been deleted, and is permitted. (S44 ?? S46) In this case, the SIP server 40 makes a first call. 2 The first mobile communication terminal 10 registered in the presence service friend list of the mobile communication terminal 12 is maintained. This is because the friend deletion of the first mobile communication terminal 10 is not requested from the second mobile communication terminal 12.

Therefore, in the present embodiment, when a presence service for informing a counterpart's online status between mobile communication terminals based on a SIP in a CDMA2000 packet network can be registered or deleted as a friend of a presence service on a SIP server in advance, the user's convenience may be improved. Increase it.

4 is a block diagram of a WCDMA network for explaining a friend registration and deletion method of a SIP-based presence service according to another embodiment of the present invention. Referring to FIG. 4, the WCDMA packet network to which the present invention is applied includes mobile communication terminals 100 and 102, wireless repeaters 110 and 112, core packet service network 120, and SIP to implement a SIP-based presence service. Server 130 is configured. The core packet service network 120 includes a Radio Network Controller (RNC) 121, 122, a Serving GPRS Support Node (SGSN) 123, 124, and a Gateway GPRS Support Node (GGSN) 126. Here, the RNCs 121 and 122 of the core packet service network 120 establish a radio channel, and the SGSNs 123 and 124 receive user packets in the GPRS network and change them into packet formats used in the GPRS network. When the GGSN 126 receives the user's packet data initiation request through the SGSN 123 and 124, the GGSN 126 allocates a temporary IP address that can be used only within the GPRS to the user, and transmits the packet transmitted from the user to the global IP. A wireless gateway that changes its address and sends it to an external packet network.

The SIP server 130 performs call exchange and call processing for the mobile communication terminals 100 and 102 connected to the mobile IP through the core packet service network 120 to provide a presence service based on SIP between mobile communication terminals. Support. FIG. 5 is a diagram illustrating an example of a friend registration procedure of a SIP-based presence service in the WCDMA network of FIG. 4. A friend registration method of a SIP-based presence service in a WCDMA packet network according to the present invention will be described with reference to FIGS. 4 and 5 as follows.

First, when requesting a friend registration of a SIP-based presence service, the first mobile communication terminal 100 registers a PS (Packet Service) through the RNC 121 of the core packet service network 120 of WCDMA, which is a mobile communication packet network. A packet data protocol (PDP) context activation procedure is performed through the SGGN 123 to receive an IP address assigned by the GGSN 126 and maintain the always-on state so that the packet can be always received. S100)

In addition, the first mobile communication terminal 100 requests SIP registration to the SIP server 130 through the core packet service network 120, and the SIP server 130 performs a SIP registration procedure of the first mobile communication terminal 100. In this case, in order to register user B of the second mobile communication terminal 102 as a friend of the presence service, user A of the first mobile communication terminal 100 also registers user B of the second mobile communication terminal 102. In step S104, the PS registration / PDP activation and SIP registration (S102, S106) procedures should be brightened and brought online with the SIP server 130. A user A of the first mobile communication terminal 100 is a friend of the presence service. In order to register the user B of the second mobile communication terminal 102, the registration request message is transmitted to the SIP server 130. (S108) At this time, the registration request message is an identifier of the mobile communication terminal corresponding to the user B, or friend. Contains an identifier of the terminal group.

The SIP server 130 adds and stores the user B or group identifier of the transmitted second mobile communication terminal 12 to the presence service friend list of the first mobile communication terminal 100. (S110) Notifies the first mobile communication terminal 100 that the second mobile communication terminal 102 is registered as a friend in the service friend list and receives permission from the first mobile communication terminal 100 (S111) and the SIP server 130. The second mobile communication terminal 102 determines whether the SIP of the second mobile communication terminal 102 is registered and checks whether the second mobile communication terminal 102 of the presence service target requested by the first mobile communication terminal 100 is currently online. S112) When the second mobile communication terminal 102 is in an online state, the SIP server 130 transmits a presence service permission message including the identifier of the first mobile communication terminal 100 to the second mobile communication terminal 102. (S114)

In the second mobile communication terminal 102, the presence service permission message for the first mobile communication terminal 100 transmitted from the SIP server 130 is displayed, and user B displays user A on the friend list of his presence service. In step S116, when the permission response S118 is transmitted from the second mobile communication terminal 102 to the SIP server 130, the SIP server 130 presents the presentation of the second mobile communication terminal 102. Adds and stores an identifier of the first mobile communication terminal 100 to the service service friend list (S120). The second mobile communication terminal 100 indicates that the first mobile communication terminal 100 is registered as a friend in the presence service friend list. 102). On the contrary, if the rejection response (S121) is transmitted from the second mobile communication terminal 102 to the SIP server 130, the SIP server 130 is the second mobile communication registered in the friend list of the first mobile communication terminal 100; The terminal 102 is registered offline and notified to the first mobile communication terminal 100. (S122)

As a result of the determination of S112, if the second mobile communication terminal 102 is not online, the SIP server 130 activates the PS registration and PDP context activation and SIP of the second mobile communication terminal 102 as in steps S100 and S104. The registration (S102, S106) process is brightened until it is online, and when it is online, it proceeds to the steps S114 to S122 described above. (S124) Figure 6 is a SIP-based presentation in the WCDMA network of FIG. FIG. 1 shows an example of a process of deleting a friend of a service. A friend deletion method of a SIP-based presence service in a WCDMA packet network according to the present invention will be described with reference to FIGS. 4 and 6 as follows.

First, when requesting to delete a friend of the SIP-based presence service, the first mobile communication terminal 10 performs PS registration through the RNC 121 of the core packet service network 120 of the WCDMA mobile communication packet network, and performs SGGN. In step 123, the PDP context activation procedure is performed to receive the IP address assigned by the GGSN 126 and keep the always on state so that the packet can be always received. In addition, the first mobile communication terminal 100 requests SIP registration to the SIP server 130 through the core packet service network 120, and the SIP server 130 performs a SIP registration procedure of the first mobile communication terminal 100. When the PS registration, the PDP context activation, and the SIP registration are performed as shown in S130, the friend of the presence service of the present invention can be deleted. In this case, the SIP server 130 in the first mobile communication terminal 100 is performed. In this case, the request message for deleting the second mobile communication terminal 102 from the friend list of the presence service is transmitted. (S132) At this time, the second mobile communication terminal 102 of the presence service target is a single request message. It consists of a terminal or at least two terminal groups. Therefore, it should include the single identifier of the second mobile communication terminal 102 or the identifier of the group of terminals corresponding to the user B who is a friend.

The SIP server 130 deletes the identifier of the second mobile communication terminal 102 registered in the friend list of the first mobile communication terminal 100 (S134) and the presence service to the first mobile communication terminal 10. The second mobile communication terminal 12 registered in the friend list is notified that the deletion is received (S136). In this case, the SIP server 130 is the first mobile communication terminal 100 from the second mobile communication terminal 102. Since the friend deletion is not requested, the first mobile communication terminal 10 registered in the friend list of the second mobile communication terminal 102 is maintained as it is.

Therefore, according to another embodiment of the present invention, when a presence service for informing a counterpart's online status between mobile communication terminals based on SIP in a WCDMA packet network can be registered or deleted as a friend of a presence service to a SIP server in advance, Increase the convenience of.

As described above, in the present invention, a user terminal registered as a friend in a mobile communication network is online by registering or deleting another user who wants to know a communication state in a mobile communication terminal and a SIP server for a SIP-based presence service. You can implement an instant messaging service that tells you that it is.

Therefore, unlike the wired network, the present invention can easily reduce the procedure of redialing or exchanging messages due to the absence of a user in a mobile communication network in which resources are limited, thereby increasing user convenience.

On the other hand, the present invention is not limited to the above-described embodiment, various modifications are possible by those skilled in the art within the spirit and scope of the present invention described in the claims to be described later.

Claims (6)

A method for providing a presence service for notifying an online state of a user in a SIP-based mobile communication packet network, Registering an IP with the mobile communication packet network and registering a SIP with the SIP server in a first mobile communication terminal; The second mobile communication terminal transmits a registration request message of the second mobile communication terminal to receive the presence service from the first mobile communication terminal and adds the second mobile communication terminal to the friend list of the first mobile communication terminal in the SIP server. And notifying the first mobile communication terminal; Confirming, by the SIP server, whether the second mobile communication terminal of the presence service object requested by the first mobile communication terminal is currently online; Transmitting, by the SIP server, a presence service permission message to a second mobile communication terminal of a presence service object when the online state is in the online state; And When the SIP server receives the permission response from the second mobile communication terminal, the first mobile communication terminal is registered in the friend list of the second mobile communication terminal, and when the rejection response is received, the friend list of the first mobile communication terminal is displayed. And registering the second mobile communication terminal off-line. The friend registration method of the SIP-based presence service in the mobile communication packet network. The method of claim 1, wherein the second mobile communication terminal of the presence service target is composed of one terminal or at least two terminal groups. The SIP server of claim 1, wherein the SIP server is in a standby state and is transmitted to the second mobile communication terminal when the second mobile communication terminal of the presence service object requested by the first mobile communication terminal is currently offline. And storing the presence service permission message. The friend registration method of the SIP-based presence service in a mobile communication packet network. A method for providing a presence service for notifying an online state of a user in a SIP-based mobile communication packet network, Registering an IP with the mobile communication packet network and registering a SIP with the SIP server in a first mobile communication terminal; Transmitting a deletion request message of a second mobile communication terminal for releasing a presence service from the first mobile communication terminal to the SIP server; And Deleting, by the SIP server, the second mobile communication terminal from a friend list of the first mobile communication terminal and notifying the first mobile communication terminal of the second mobile communication terminal to the SIP-based presence service of the mobile communication packet network. How to delete a friend. The method of claim 4, wherein the second mobile communication terminal to be released from the presence service comprises one terminal or at least two terminal groups. The method of claim 4, further comprising: maintaining the first mobile communication terminal in a friend list of the second mobile communication terminal after deleting the second mobile communication terminal from the SIP server and notifying the first mobile communication terminal. The friend deletion method of the SIP-based presence service in the mobile communication packet network further comprising.