JP5193902B2 - Presence service system and presence service method - Google Patents

Description

  The present invention relates to a system and method for providing a presence service via a web service.

  The presence service is a service that informs another user of the user's state, and is realized using, for example, SIP (Session Initiation Protocol: session establishment protocol, hereinafter referred to as “SIP”) / SIMPLE protocol (for example, “non-existing” See Patent Document 1). In SIP, a SIP signal (such as a SUBSCRIBE signal) including a watcher (originating side) requesting presence information indicating a state, a presentity for publishing presence information, and a publisher (destination side) ID is transmitted to the SIP presence server. Get information.

  For example, in Non-Patent Document 2, by using a Web service API (Application Program Interface) such as Parlay X or REST, the presence service includes not only the SIP / SIMPLE protocol but also a protocol such as HTTP / SOAP (Simple Object Access Protocol). It describes what can be achieved using this.

  For example, a blog (Weblog), which is one of Web applications, is a service that does not specify a person (watcher) who is browsing this. In order to realize a service using a presence service in a blog or the like, it is assumed that a watcher's ID is anonymous (or SIP-AS ID) in the gateway (SIP application server: SIP-AS). The Here, the gateway (SIP-AS) has a role of performing SIP protocol conversion with HTTP / SOAP or the like.

  In the presence service using SIP, when the watcher ID such as SIP-URI can be specified, for viewing presence information on which watcher the presence information defined in RFC5025 is to be disclosed or not disclosed Can be used (presence authorization rules / policy). By using the presence authorization rule, the user can specify an authorization rule set (Presence Authorization Rules) for giving the presenter permission to access specific presence information to the watcher.

Non-Patent Document 3 describes XDMS (XML Data Management Server) that manages an authorization rule set for granting access permission for presence information.
Non-Patent Document 4 describes a method for obtaining an XDMS authorization rule from a presence server.

3GPP TS 24.141 v7.4.0, "Presence service using the IP Multimedia (IM) Core Network (CN) subsystem," Sep. 2007. Kazuhiro Tokunaga, Naoki Takaya, Akira Kurokawa, “SIP Presence Server Usage Method in Web Services,” IEICE, General Conference 2008, Mar. 2008. OMA-TS-Presence_SIMPLE_XDM-V1_1-20080627-A, "Presence XDM Specification," Jun. 2008. OMA-TS-Presence_SIMPLE-V1_1-20080627-A, "Presence Simple Specification," Jun. 2008.

  In the presence service using SIP, it is possible to use an authorization policy for browsing presence information, but when using the presence service from the Web service, the request side (watcher) in the SIP signal transmitted to the presence server is used. ) Presence service ID is unknown, the authorization policy for browsing presence information cannot be used. This is because the presence server receives a presence request from the gateway but cannot specify the presence service ID of the requesting side (watcher), and therefore cannot apply the authorization policy.

  The present invention has been made in view of the above problems, and a presence service system and a presence service method that can use authorization for browsing presence information when using presence information from a Web service or the like. The purpose is to provide.

  A presence service system according to an aspect of the present invention includes a presence server that holds presence information issued by a publisher user, an authorization policy management server (XDMS) that manages an authorization policy of the publisher user, and a user Web An ID correspondence storage unit that associates and stores a service ID and a presence service ID when the user is a watcher, and a presence information request including the Web service ID of the user by a presence information browsing request from the user of the watcher The presence information request corresponding to the user's Web service ID is acquired from the ID correspondence storage unit, and the presence information request is received from the Web service server. A gateway for transmitting a subscribe request including a presence service ID, and the presence server receives the subscribe request and provides a watcher user specified by the presence service ID included in the subscribe request to the watcher user. On the other hand, a presence response is transmitted by applying the authorization policy.

  The presence service method according to another aspect of the present invention includes a step in which a presence server holds presence information issued by a publisher user, and an authorization policy management server (XDMS) manages the authorization policy of the publisher user. The ID correspondence storage unit stores the Web service ID of the user in association with the presence service ID when the user is a watcher, and the Web service server stores presence information from the watcher user. In response to the browsing request, a step of transmitting a presence information request including the Web service ID of the user by the Web service, and the gateway receives the presence information request from the server of the Web service, and sets the Web service ID of the user. Obtaining a corresponding presence service ID from the ID correspondence storage unit, and transmitting a subscription request including the presence service ID to the presence server; and the presence server includes a presence service ID included in the subscription request. And applying the authorization policy acquired from the authorization policy management server to the user of the watcher specified by the step of transmitting a presence response.

According to the present invention, it is possible to provide a presence service system and a presence service method capable of using authorization for browsing presence information when using presence information from a Web service or the like.
Furthermore, it is possible to reduce the processing amount of the presence server and the authorization policy management server (XDMS) that are implemented to acquire presence information.

1 is a diagram showing an overall configuration of a presence service system according to a first embodiment of the present invention. It is a figure which shows the function block diagram of the gateway (SIP-AS) which concerns on the said 1st Embodiment. It is a figure which shows an example of the ID memory | storage part which concerns on the 1st Embodiment. It is a figure which shows the sequence diagram which concerns on the 1st Embodiment. It is a figure which shows the whole structure of the presence service system which concerns on 2nd Embodiment of this invention. It is a figure which shows the function block diagram of the gateway (SIP-AS) which concerns on the 2nd Embodiment. It is a figure which shows an example of the memory | storage part of the request origin, request destination, and presence information which concern on the 2nd Embodiment. It is a figure which shows the sequence diagram which concerns on the 2nd Embodiment. It is a figure which shows the whole structure of the presence service system which concerns on 3rd Embodiment of this invention. It is a figure which shows the function block diagram of the gateway (SIP-AS) which concerns on the said 3rd Embodiment. It is a figure which shows the sequence diagram which concerns on the 3rd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First embodiment)
FIG. 1 is a diagram showing an overall configuration of a presence service system according to the first embodiment of the present invention. As shown in the figure, the system according to the present embodiment is mainly constructed based on the first network 1 constructed based on HTTP (Hyper Text Transfer Protocol) and mainly based on SIP (Session Initiation Protocol). And a second network 2. The first network 1 is, for example, World Wide Web (WWW). The second network 2 is, for example, an IMS (IP Multimedia Subsystem) or the like.

  In the first network 1 (Web or the like), the terminals (watchers) of users A to B are connected to the server 3 of the Web service. The Web service provided thereby is, for example, SNS (Sorial Networking Service).

  The IMSs constituting the second network 2 are: S-CSCF (Serving Call Session Control Function) 10, P-CSCF (Proxy Call Session Control Function) 11, I-CSCF (Interrogating Call Session Control HSS) It includes functional entities such as Scriber Server 13.

The presence service system according to the present embodiment is realized by a gateway (SIP-AS) 4, an XDMS (XML Data Management Server) 6, and a presence server 8 constructed on such an IMS platform.
The server 3 of the Web service (SNS, etc.) in the first network 1 and the gateway (SIP-AS) 4 in the second network 2 (IMS, etc.) are interfaces such as HTTP / SOAP (Simple Object Access Protocol). Existence information is exchanged via REST / Parlay X).

  In the second network (IMS or the like) 2, the presence statuses of the terminals (publishers) of the users A to D are registered in the presence server 8. For example, “Mr. User A: Calling” “ The presence status such as “User B: private”, “User C: offline”, and “User D: private” can be browsed. The presence service according to the present embodiment can browse the presence status of the publisher in the second network (such as IMS) 2 from the terminal (watcher) of the first network (such as Web) 1 through the web service or the like. It is to make.

  Conventionally, since the ID when the terminals (watchers) of the users A to B use the Web service (SNS etc.) and the ID when the presence service is used are different, the terminal uses the presence information from the Web service etc. In this case, the presence service is used with the watcher's presence service ID anonymous (or SIP application server ID), and authorization for viewing presence information cannot be used.

  On the other hand, the first embodiment of the present invention is configured such that an authorization policy for browsing presence information can be used without being subjected to such restrictions. For this reason, this system includes an ID correspondence storage unit 5 that stores an ID of a Web service and an ID of a presence service in association with each other. The gateway (SIP-AS) 4 can use an authorization policy for viewing presence information by giving a presence service watcher ID to the presence server 8 and transmitting a SIP signal (SUBSCRIBE or the like). To do.

  FIG. 2 shows a functional configuration diagram of the gateway (SIP-AS) according to the first embodiment. The main function of the gateway (SIP-AS) 4 is an HTTP / SOAP / SIP protocol conversion function. In this embodiment, the gateway (SIP-AS) 4 further has a function of changing a subscribe request source.

  Specifically, the gateway (SIP-AS) 4 receives presence information request including a Web service ID of a terminal (watcher) of the first network 1 as a subscription request source from the Web service server 3. For the received presence information request, the request receiving unit 40 obtains the presence service ID corresponding to the Web service ID from the ID correspondence storage unit 5, so that the subscription request source (from anonymous or the ID of the gateway 4) Subscriber request source changing unit 41 for changing to the presence service ID of the watcher, and sending a subscribe request (SIP signal such as SUBSCRIBE) to the presence server 8 with the subscribe request source as the watcher's presence service ID (watcher ID). Having a subscribe request transmission unit 42.

  In addition, the gateway (SIP-AS) 4 includes a presence information receiving unit 44 that receives presence information (SIP signal such as NOTIFY) from the presence server 8 in the second network (such as IMS) 2, and the received presence information as presence information. As a response to the request, there is a presence information transmission unit 43 that transmits to a terminal (watcher) of the first network 1.

  For example, as shown in FIG. 3, the ID correspondence storage unit 5 stores the correspondence between the Web service ID and the presence service ID for each user. In FIG. 1, the ID correspondence storage unit 5 is shown to be provided outside the gateway (SIP-AS) 4, but the ID correspondence storage unit 5 is connected to the gateway (SIP-AS) as shown in FIG. 2. ) 4 may be provided. Or the form by which the ID corresponding | compatible memory | storage part 5 is arrange | positioned as an apparatus independent in the web service or the gateway (SIP-AS) 4 is also assumed.

  FIG. 4 shows a sequence diagram of the first embodiment. In this sequence, presence information on user C's terminal (publisher) is browsed twice by the user A's terminal (watcher) of the first network (Web etc.) 1 through the web service, and then user B's terminal (watcher). Is an example of browsing the presence information of the user C twice.

  In the second network (IMS or the like) 2, the terminal of the user C issues presence (PUBLISH or the like) to the presence server 8. The presence server 8 holds the presence of the user C (presence 9 in FIG. 1). The terminal of the user C sends the presence authorization policy of the user C to an XDMS (authorization policy management server) 6. For this, for example, an HTTP PUT command is used. XDMS 6 holds the presence authorization policy of user C. At this point, the presence service of the user C based on the authorization process can be provided. That is, in order to use the presence service of the user C, it is necessary to pass authorization according to the authorization policy of the user C.

  In such a situation, the terminal (watcher) of the user A of the first network 1 makes a request for presence information of the user C to the Web service server 3 such as SNS. In response to this, the Web service server 3 first makes a first presence information request (the presence request of the user C by the user A) to the gateway (SIP-AS) 4. This is performed via an interface such as HTTP / SOAP.

  The gateway (SIP-AS) 4 inquires of the ID correspondence storage unit 5 and acquires the presence service ID corresponding to the Web service ID (Web-ID) of the user A. Then, the gateway (SIP-AS) 4 changes the subscribe request source (anonymous or from the presence service ID of the gateway 4) to the presence service ID (watcher ID) of the user A, and subscribe request (a SIP signal such as SUBSCRIBE) ) To the presence server 8. As a result, a presence request from user A to user C is made.

  When the presence server 8 receives the SIP signal (SUBSCRIBE or the like) to which the watcher ID of the user A is assigned, the presence server 8 requests the XDMS 6 for the authorization policy of the user C with whom the user A is seeking presence information. For example, an HTTP GET command is used. The XDMS 6 already holds the authorization policy for the user C, and returns an authorization policy response for the user C to the presence server 8 (2000K).

  In response to the presence request from the user A, the presence server 8 transmits a presence response (SIP signal such as NOTIFY) to which the authorization policy of the user C is applied to the gateway (SIP-AS) 4. The gateway (SIP-AS) 4 transmits the presence response of the user C to the Web service server 3. This is performed through an interface such as HTTP / SOAP as in the case of the presence request.

Therefore, the Web service for the user A can acquire presence information using authorization via the gateway (SIP-AS) 4.
Further, the terminal (watcher) of the user A browses the second time through the Web service, and then the terminal (watcher) of the user B browses the presence information of the user C twice. As can be seen from FIG. 4, these operations are the same as in the first browsing. For the user (watcher), a correspondence inquiry between the Web service ID and the presence service ID is performed, and a subscribe request (presence request) is made with the corresponding presence service ID as a subscribe request source.

(Second Embodiment)
Hereinafter, a second embodiment of the present invention will be described with reference to FIGS. Here, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof will be omitted, and only the parts different from those in the first embodiment will be described.
According to the first embodiment, when using presence information from a Web service or the like, it is possible to use authorization for browsing presence information, but the gateway (SIP-AS) 4 based on HTTP / SOAP or the like can be used. There is a one-to-one correspondence between a presence request and a presence request to the presence server 8 by a SIP signal (SUBSCRIBE or the like). For this reason, when the number of presence requests to the gateway (SIP-AS) 4 by HTTP / SOAP or the like is large, the number of presence requests to the presence server 8 also increases in proportion to the presence server 8 and the presence server 8. This increases the signal processing load in the second network (IMS or the like) 2 that relays the signal. The second embodiment relates to the reduction of such a signal processing load.

  The second embodiment is the same as the first embodiment in that authorization for viewing presence information can be used when using presence information from a Web service or the like. However, as shown in FIG. The present embodiment is different from the first embodiment in that the presence information (partial) 20 already acquired from the network is held in the gateway (SIP-AS) 4. If a presence information browsing request corresponding to the same presence information request occurs while holding the presence information 20, the gateway (SIP-AS) 4 instead of relaying the request to the presence server 8, The presence information 20 held in the (SIP-AS) 4 is transmitted to the Web service server 3.

  For this reason, as shown in FIG. 6, the gateway (SIP-AS) 4 according to the second embodiment adds a watcher ID (presence) to the presence information received by the presence information receiving unit 44 in addition to the components shown in FIG. Request information), presence information response control 45 for performing control for associating and storing the publisher ID (presence request destination) and the presence information data of the publisher in the storage unit 46, and presence information received by the presence information request receiving unit 40 For the request, it is determined whether or not presence information corresponding to the watcher ID (presence request source) and publisher ID (presence request destination) exists in the storage unit 46, and if it is determined that the presence information exists in the storage unit 46 For example, the corresponding presence information data is sent to the Web service server 3. Having a subscribe request transmission control unit 47 instructs the presence information sending unit 43 sends the subscribe request based on changing unit 41 if not in the usual as a new presence information request to send to.

The watcher ID (presence request source) in the presence information request received by the presence information request receiving unit 40 can be specified from the ID correspondence storage unit 5.
As shown in FIG. 7, the requester, the requestee, and the presence information storage unit 46 associate the watcher ID (presence requester), the publisher ID (presence requestee), and the presence information data of the publisher. Stored.

  FIG. 8 shows a sequence diagram of the second embodiment. As in the first embodiment, this sequence is followed by the user A's terminal (watcher) in the first network (Web, etc.) 1 viewing the presence information in the terminal (publisher) of user C twice through the web service, In this example, the terminal (watcher) of the user B browses the presence information of the user C twice.

  As in the first embodiment, in the second network (IMS or the like) 2, the terminal of the user C issues a presence (PUBLISH or the like) to the presence server 8, and the presence server 8 (Presence 9 in FIG. 5) is held. The XDMS 6 holds the presence authorization policy of the user C. At this point, the presence service of the user C based on the authorization process can be provided.

  In such a situation, the terminal (watcher) of the user A of the first network 1 makes a request for presence information of the user C to the web service server 3 such as the SNS, and the web service server 3 responds accordingly. First, a first presence information request (user C's presence request for user C) is made to the gateway (SIP-AS) 4.

  The gateway (SIP-AS) 4 inquires of the ID correspondence storage unit 5 to obtain the presence service ID corresponding to the Web service ID (Web-ID) of the user A, and uses the subscription request source as the presence service ID (user A). Change to watcher ID) and send a subscribe request to the presence server 8. As a result, a presence request from user A to user C is made.

  When the presence server 8 receives the presence request assigned with the watcher ID of the user A, the presence server 8 requests the authorization policy of the user C with whom the user A is seeking presence information from the XDMS 6. In response to this, the XDMS 6 returns an authorization policy response of the user C to the presence server 8 (2000K).

  In response to the presence request from the user A, the presence server 8 transmits a presence response (SIP signal such as NOTIFY) to which the authorization policy of the user C is applied to the gateway (SIP-AS) 4. The gateway (SIP-AS) 4 transmits the presence response of the user C to the Web service server 3. Here, in the second embodiment, the presence information 20 of the user C is held in the storage unit 46.

  Next, the terminal (watcher) of the user A performs a second browsing through the web service. Here, the Web service server 3 makes a second presence information request (the presence request of the user C by the user A) to the gateway (SIP-AS) 4. The gateway (SIP-AS) 4 inquires of the ID correspondence storage unit 5 and acquires the presence service ID corresponding to the Web service ID (Web-ID) of the user A. Here, since the presence 20 is held in the storage unit 46 in association with the watcher ID (presence request source) of the user A and the publisher ID (presence request destination) of the user C, the gateway (SIP-AS) 4 reads the presence 20 from the storage unit 46 and responds to the server 3 of the Web service as a presence response. That is, for the second presence information request (the presence request of the user C by the user A), a subscription request based on the request is not sent to the presence server 8. According to the second embodiment, the signal processing load of the presence server 8 and the second network (IMS or the like) 2 that relays signals to the presence server 8 can be reduced as compared with the first embodiment.

(Third embodiment)
Hereinafter, a third embodiment of the present invention will be described with reference to FIGS. 9 to 11. Here, the same reference numerals are given to the same components as those in the second embodiment, and the description thereof will be omitted. The parts of the third embodiment different from those of the second embodiment will be described.
The second embodiment makes it possible to use authorization for viewing presence information when using presence information from a web service or the like, and further reduces the processing load on the presence server 8 compared to the first embodiment. If the request source (watcher) from the Web service is different even if the presence request is for the same publisher, a SIP signal is transmitted to the presence server 8 in order to confirm the authorization policy applied by the publisher to the watcher. There must be.

  The third embodiment is similar to the first embodiment in that authorization for viewing presence information can be used when using presence information from a Web service or the like, and the presence information browsing request is relayed to the presence server 8. Instead, the presence information 20 held in the gateway (SIP-AS) 4 is transmitted to the Web service server 3 as in the second embodiment, but as shown in FIG. The second embodiment is different from the second embodiment in that an authorization policy (part) 30 already acquired from the XDMS 6 serving as an authorization policy management server is held in the gateway (SIP-AS) 4.

When it becomes necessary to confirm the authorization policy to be applied to the watcher as described above, the gateway (SIP-AS) 4 uses the authorization policy 30 held inside.
Therefore, as shown in FIG. 10, the gateway (SIP-AS) 4 according to the third embodiment grants an authorization policy request for requesting the authorization policy of the publisher of presence information in addition to the components shown in FIG. An authorization policy request transmission unit 48 that transmits to the XDMS 6 that is the policy management server, an authorization policy reception unit 49 that receives the authorization policy transmitted from the XDMS 6 in response to this request, and an authorization policy storage unit that stores the received authorization policy 50.

  FIG. 11 shows a sequence of the third embodiment. The gateway (SIP-AS) 4 is the authorization policy management server while acquiring the presence information 20 of the user C from the presence server 8 using the gateway (SIP-AS) 4 as a request source and holding it in the storage unit 46. The authorization policy 30 of the same user C is acquired from the XDMS 6 and stored in the storage unit 50. In the third embodiment, when the presence information 20 of the user C is acquired from the presence server 8, the request source is the gateway (SIP-AS) 4 instead of the user A (watcher). This is different from the embodiment. In this case, the gateway (SIP-AS) 4 sends a subscribe request (SIP signal such as SUBSCRIBE) to the presence server 8 with the subscribe request source as the presence service ID (watcher ID) of the gateway (SIP-AS) 4. Send. Alternatively, the presence service ID (watcher ID) of the gateway (SIP-AS) 4 may be used instead of a specific presence service ID that means anonymity. In the third embodiment, the authorization policy is applied to the presence information in the gateway 4 instead of the presence server 8. If a subscribe request (SIP signal such as SUBSCRIBE) including the presence service ID of the user A who is a watcher is transmitted to the presence server 8 as in the first and second embodiments, the presence server 8 will determine the authorization policy. Will be applied. Therefore, in the present embodiment, the presence server 8 does not apply the authorization policy by using a subscription request with a presence service ID (watcher ID) different from that of the user A as described above.

  The gateway (SIP-AS) 4 is a presence server for the second and subsequent presence requests (in this example, the presence request from the user B to the user C) having the same request destination (the user C in this example). 8 can respond to a Web service without sending a SIP signal to the presence server 8 and the signal processing load of the second network (such as IMS) that relays the signal to the presence server 8 is reduced compared to the first embodiment. Is possible.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

1 ... 1st network (Web etc.);
2 ... Second network (SIP etc.);
3 ... Web service server (SNS, etc.);
4 ... Gateway (SIP-AS);
5 ... ID correspondence storage unit;
6 ... XDMS;
7 ... Authorization policy;
8 ... Presence server;
9 ... Presence;
10 ... S-CSCF;
11 ... P-CSCF;
12 ... I-CSCF;
13 ... HSS

Claims (6)

A presence server that holds presence information issued by publisher users;
An authorization policy management server (XDMS) for managing authorization policies of the publisher user;
An ID correspondence storage unit that stores a Web service ID of a user in association with a presence service ID when the user is a watcher;
A web service server that transmits a presence information request including the web service ID of the user by a web service in response to a presence information browsing request from a watcher user;
The presence information request is received from the web service server, a presence service ID corresponding to the web service ID of the user is obtained from the ID correspondence storage unit, and a subscription request including the presence service ID is obtained from the presence server. And a gateway to transmit to
The presence server sends a presence response to the watcher user specified by the presence service ID included in the subscribe request by applying the authorization policy acquired from the authorization policy management server. Service system. A presence server that holds presence information issued by publisher users;
An authorization policy management server (XDMS) for managing authorization policies of the publisher user;
An ID correspondence storage unit that stores a Web service ID of a user in association with a presence service ID when the user is a watcher;
A web service server that transmits a presence information request including the web service ID of the user by a web service in response to a presence information browsing request from a watcher user;
The presence information request is received from the web service server, a presence service ID corresponding to the web service ID of the user is obtained from the ID correspondence storage unit, and a subscription request including the presence service ID is obtained from the presence server. And a gateway to transmit to
The presence server sends a presence response to the watcher user identified by the presence service ID included in the subscribe request by applying the authorization policy acquired from the authorization policy management server;
The gateway stores the presence information received as the presence response in a presence information storage unit in association with the presence service ID of the watcher user and the presence service ID of the publisher user;
In response to a subscribe request in which the presence service ID of the watcher user and the presence service ID of the publisher user are the same, the presence information stored in the presence information storage unit is sent to the Web service server as a presence response. A presence service system characterized by transmitting. A presence server that holds presence information issued by publisher users;
An authorization policy management server (XDMS) for managing authorization policies of the publisher user;
An ID correspondence storage unit that stores a Web service ID of a user in association with a presence service ID when the user is a watcher;
A web service server that transmits a presence information request including the web service ID of the user by a web service in response to a presence information browsing request from a watcher user;
A gateway for receiving the presence information request from the web service server and transmitting a subscribe request to the presence server;
The presence server sends a presence response in response to the subscribe request;
The gateway stores the presence information received as the presence response in the presence information storage unit in association with the presence service ID of the watcher user and the presence service ID of the publisher user, and the authorization policy of the publisher is stored in the authorization policy. Acquired from the management server and stored in the authorization policy storage unit,
For a subscription request in which the presence service ID of the publisher user is the same, the authorization for the presence information stored in the presence information storage unit with respect to the presence service ID of the watcher user in the subscription request A presence service system, wherein an authorization policy stored in a policy storage unit is applied and transmitted to the Web service server as a presence response. A presence server holding presence information issued by a publisher user;
An authorization policy management server (XDMS) managing an authorization policy of the publisher user;
An ID correspondence storage unit stores the Web service ID of the user in association with the presence service ID when the user is a watcher;
A web service server sending a presence information request including a web service ID of the user by a web service in response to a presence information browsing request from a watcher user;
The gateway receives the presence information request from the Web service server, obtains a presence service ID corresponding to the Web service ID of the user from the ID correspondence storage unit, and sends a subscribe request including the presence service ID. Transmitting to the presence server;
The presence server includes a step of transmitting a presence response by applying an authorization policy acquired from the authorization policy management server to a watcher user specified by a presence service ID included in the subscribe request. A characteristic presence service method. A presence server holding presence information issued by a publisher user;
An authorization policy management server (XDMS) managing an authorization policy of the publisher user;
An ID correspondence storage unit stores the Web service ID of the user in association with the presence service ID when the user is a watcher;
A web service server sending a presence information request including the web service ID of the user by a web service in response to a presence information browsing request from a watcher user;
The gateway receives the presence information request from the Web service server, obtains a presence service ID corresponding to the Web service ID of the user from the ID correspondence storage unit, and sends a subscribe request including the presence service ID. Transmitting to the presence server;
The presence server transmitting a presence response by applying the authorization policy acquired from the authorization policy management server to a watcher user identified by a presence service ID included in the subscribe request;
The gateway stores the presence information received as the presence response in the presence information storage unit in association with the presence service ID of the watcher user and the presence service ID of the publisher user, and the presence service ID of the watcher user and the publisher And a step of transmitting the presence information stored in the presence information storage unit as a presence response to the Web service server in response to a subscription request having the same user presence service ID. Presence service method to do. A presence server holding presence information issued by a publisher user;
An authorization policy management server (XDMS) managing an authorization policy of the publisher user;
An ID correspondence storage unit stores the Web service ID of the user in association with the presence service ID when the user is a watcher;
A web service server sending a presence information request including a web service ID of the user by a web service in response to a presence information browsing request from a watcher user;
A gateway receiving the presence information request from the web service server and sending a subscribe request to the presence server;
The presence server sending a presence response in response to the subscribe request;
The gateway stores the presence information received as the presence response in the presence information storage unit in association with the presence service ID of the watcher user and the presence service ID of the publisher user, and the authorization policy of the publisher is stored in the authorization policy. For a subscription request acquired from the management server and stored in the authorization policy storage unit and having the same presence service ID of the publisher user, the presence information regarding the presence service ID of the watcher user in the subscription request Applying the authorization policy stored in the authorization policy storage unit to the presence information stored in the storage unit and transmitting the presence policy as a presence response to the server of the Web service , Presence service method, which comprises a.

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