| 摘要 |
PROBLEM TO BE SOLVED: To provide a radio communication system capable of dynamically giving subgroup IDs to an arbitrary number of radio devices which constitute the communication system, constituting a new subgroup b means of those subgroup IDs and is able to attain the broadcast data communication in the new subgroup. SOLUTION: A radio device 11 which requests the start for a broadcast data communication in a subgroup notifies a master unit of the start request for the subgroup communication. Upon receiving the start request, the master unit checks the identification number of a system, the identification number of a terminal included in the system and the identification number of a working subgroup, assigns a non-overlapping subgroup identification number as a subgroup identification number against the start request and notifies a slave unit, that sent the start request for the assigned subgroup identification number. Thereafter, the device 11 that received the subgroup identification number constructs a subgroup with other devices 11. Thus, the broadcast data communication is performed in the subgroup. |
