Abstract: A method and a system for processing an address book are provided. The method includes the following steps. A network address book (NAB) parses a user address book, and generates an acquisition request according to settings of the user address book. The NAB acquires contact information to be updated according to the acquisition request, and updates the user address book. The NAB synchronizes or transmits updated information of the user address book to a piece of user equipment (UE). By using the method, plenty of contact information is acquired according to the user settings. Therefore, the method solves the problems that the address books in the conventional technology have single-purpose functions and closely related to services and thus cannot serve as an independent function for providing services for the user.

Abstract: A method of managing an Extensible Markup Language (XML) document is provided. The method includes a XML server receiving the request of XML document management operation sending from the XML Document Management (XDM) client. The request carries the document identifier and the state information. The XDM server changes the state of the document corresponding to the document identifier to the state that corresponding to the state information.

Abstract: A method and system for establishing a group session and a service server are disclosed. The method comprises: acquiring a group member list and establishing session conditions according to the information in a received group session; acquiring the various information described in the establishing session conditions; determining group members of which the various information meets the establishing session conditions; and sending a request for establishing a group session of which the various information meets the establishing session conditions, and establishing the group session. The method solves the problem that the service server cannot dynamically select the group members, according to the current statuses of the group members, to establish the session in the prior art, whose disadvantages are the session is inflexible and the communication resources are wasted.

Abstract: A system and method for realizing group talk QoE includes the following: a group talk control server determining the group talk QoE type according to preset QoE type corresponding with a group when group talk is established; and the group talk control server configuring the established talk characteristic, according to the QoE type corresponding with the group. A system for realizing group talk QoE includes a user device, a shared group server for storing group information and a group talk control server.

Abstract: A method for querying user information includes: A search proxy receives a query request containing query conditions sent from a client, and forwards a message of the query request to the XDM server in which the user information is stored. The search proxy receives the query result returned from the XDM server, and subscribes to the user URI presence information from the presence server. The user URI presence information is contained in the query result. The search proxy integrates the presence information returned from the presence server with the query result, and sends an integration result to the client. Thus, a user can obtain the user information when he/she obtains the user information in XDM.

Abstract: An extensible markup language document management method includes: receiving a document recovery request from a user; and recovering a version of the document as required by a user from the current version of the document, in accordance with the change records for the document. An extensible markup language document management system includes: a rollback control module, adapted to recover a version of a document as required by a user from the current version of the document, in accordance with change records for the document, upon receiving a document recovery request from the user.

Abstract: An Extensible Markup Language (XML) document management method includes: receiving an XML document management operation request sent via an XCAP protocol, by an XML Document Management Server (XDMS); determining that the XML document management operation request is in an entrustment mode, and determining whether to perform an operation described in the XML document management operation request in accordance with access permission information corresponding to an XML document, by the XDMS.

Abstract: The present invention discloses a method for providing presence information, including: setting a validity period of the presence information; publishing, by a presentity client, the received presence information and the validity period to a presence server; and distributing the received presence information and the validity period to a watcher client by the presence server. Thus, the watcher client knows the validity period of the presence information, such as an end time of a current presence time, and thereby selects timely an appropriate time for communication with the presentity client. Furthermore, the present invention also provides a start time of the current presence information, and thus the watcher client knows a duration of the current presence information of the presentity client. The present invention further discloses a system for providing presence information.

Abstract: The present invention discloses a method for realizing presence service. By recording a correlation between a watcher identity and a class in an authentication configuration information of a presentity for a watcher and making presence information related to a corresponding class in the presence information issued by the presentity, a presence server determines that presence information may be obtained by the watcher according to a correlation between classes and watcher identities and presence information. The invention further discloses a system for realizing presence service, a presence information processing device and a presentity client.

Abstract: A search proxy device, a communication system and a method for searching for information are disclosed. The search proxy receives an Extensible Markup Language (XML) document information search request from a client or a service enabler server, processes the XML document information search request, sends a search message to a XML Document Management (XDM) server storing XML documents, and returns a search result from the XDM server to the client or the service enabler server.