METHOD OF PROVIDING USER GROUP SERVICE, SERVER PERFORMING THE SAME AND RELAY SERVER PERFORMING THE SAME

摘要

A method for providing a user group service is performed in a user group service providing server that can be connected to a user terminal carried by a user via a user group relay server. The method for providing the user group service comprises the following steps: generating a closed user group that is subordinate to the user group relay server and can be constituted with one or more users; configuring the users in the closed user group if the user terminals are connected to the user group relay server; and providing the users with the user group service related to the closed user group by using a communication channel established via the user group relay server.