MULTI-ADDRESS LIST GENERATION METHOD

摘要

PROBLEM TO BE SOLVED: To efficiently generate a multi-address list, which a group communication processor uses for group communication, in a short time. SOLUTION: A multi-address list 14 is constituted of a group pattern table 15 showing the relation of a group pattern obtained by combining one or more group identifiers to which a user belongs with respect to respective user identifiers and a multi-address pattern table 16 indicating the relation of a broadcast packet transmission destination user identifier with respect to the group pattern. In the case of new entry/separation of the user, single addition/ deletion to/from the multi-address pattern table or the update of the multi- address pattern table using a multi-address pattern generation table 18 which is previously generated is executed in accordance with the existence of the group pattern or not.