Abstract: A method for implementing dynamic groups includes: receiving a roam notification message of a roaming user, wherein the roam notification message includes location information; finding pal information that matches the location information carried in the roam notification message from an address book of the user; and creating a group according to the matching pal information. The method creates a group for the user dynamically according to the roam location of the user. Through the dynamic group, the user in the roaming state obtains the information on the pals in the roam area quickly, and contacts the pals conveniently and quickly. Therefore, the user experience is improved and operators may implement value-added services based on the dynamic group. A device for implementing dynamic groups is also disclosed.

Abstract: A method for accessing user data and a profile management server (PMS) to resolve the inability of prior arts are disclosed to support both the associated access between user profiles and the distributed data access mechanism. The method for accessing user data includes: a PMS receives an associated data access request message from a requestor, determines a target associated user set after determining that the requestor is allowed to perform associated access to a source user, and converts the associated data access request into a data access request directed to each target associated user; and the PMS authenticates the data access request directed to each target associated user respectively and provides related data according to the authentication result. The PMS includes an authorization rule storage module, a control module, an association processing module and an association storage module.

Abstract: An information issuing system, a public media information issuing system, and an information issuing method are provided, in which the information issuing method includes: collecting the user ID of every user who enters the service region of the public media information issuing system; acquiring the corresponding behavior character information of the user ID; integrating the behavior character information and selecting the corresponding information to be issued based on the integrated behavior character information; and issuing the selected information. Using the present disclosure, it can locate the information interested by the user to issue to the user fast and expediently.