Patent ID: 6529882
Filing Date: 2003-03-04
Classification: G06Q

Abstract:
A method for strictly managing group membership in Internet multicast applications, comprising:a group creation and enrollment step in which a group management server creates a group and performs group registration as a group management client requests a group registration by creating group information and transmitting the information to the group management when request for multicast group creation occurs; a group announcement step in which the group management server announces the created group using a multicast group address; a group query step in which the group management client which knows a group ID inquires the group information of the group management server and acquires a response; a group information acquisition step in which the group management client which does not know a group ID joins a known group address and acquires the group information that arrives at the known group address; a group registration step in which the group management client enrolls in the group management server as a participant; a group leaving step in which the group management client leaves the group by transmitting information for leaving the group to the group management server; a failure information response step in which the group management server transmits information on a reason for failure to the group management client when the group management server fails in processing a request for group creation, query, enrollment or leaving; and a fragment message transmission step in which the group management client divides the request and transmits the fragment messages, while the group management server acquires the group information by assembling the fragment messages.