| 摘要 |
PURPOSE:To relieve the load to be called by a radio line controller while improving the effect of battery saving of a radio telephone set by managing a control group area at every group, sending a signal at every prescribed timing of each group area and managing the location of the radio telephone set at every group. CONSTITUTION:The titled system consists of a radio telephone set 2, radio connection devices A1-A3, B1, B2, C1 and a radio line controller. The system number and the information of a radio connection device group or the like are informed at a prescribed period at every radio connection group as information signals a1, a2, and radio telephone sets located in the groups A-C are subjected to battery saving for a period BS in synchronizing with the period of the information signal. When the radio telephone set 2 is moved from a group area A to B, the information signal of the group area B is received while matching the on-timing of the receiver with the minimum information timing T of the information signal informed by the group areas A-C from the period BS. Then an automatic position registration signal (b) is sent by the radio connection device B1 at a point of time TP in receiving the information signal a2, the automatic location registration end signal (c) from the controller 1 is received and the period is restored to the original battery saving period BS. |
