| 摘要 |
PROBLEM TO BE SOLVED: To provide a response line allocation method, a center station and a recording medium, which can suppress increase in required response time without impairing the system security even when the number of user stations is increased. SOLUTION: When response contents have correlativity among all user stations, parts of the user stations are selected as one group, an inquiry signal is broadcast to the group, a common response line is allocated to the group, the reception of a response signal is awaited, the number of user stations of a group selected next is decided depending on the result of reception, the user stations of a decided number are selected as another group among the remaining user stations not selected, the inquiry signal is broadcast to the selected user stations and a common response line is allocated to respond to the inquiry signal. |
