| 摘要 |
For controlling the traffic balance between the paging upon incoming calls and the location registration according to the traffic at the time of transmitting and receiving packets, to realize efficient battery conservation in a mobile station, the present invention provides a system constituted by a plurality of base stations, a plurality of mobile stations, and a management server for location information of each mobile station and the like, in which a set of respective cells formed by the base stations constitutes a first area group, whereas each mobile station shifts to a mode periodically receiving signals from the base stations if no signals are transmitted and received for a predetermined period. Each base station forms second to n-th area groups (n ≥ 2), each having an area smaller than that of the first area, to be included in the first area group used when the mobile stations are in idle state. Each mobile station selects the area group to register according to the period in which no packet is received and transmitted in the above-mentioned mode, and registers its location while specifying an area within this area group with respect to the server. <IMAGE> |
