| 摘要 |
PURPOSE: To obtain an access method having low sensitivity with respect to disturbances by eliminating the sum of an inspection after a 1st access message part. CONSTITUTION: A mobile station receives the down link of a control channel (41) and then receives free time slot information on an up link from a base station (42). The mobile station transmits a 1st access message part (43), the base station calculates the single sum of a circulate redundant inspection and transmits onto the down link, together with a check message to notify the mobile station that it has been properly received (44). The mobile station checks whether it matches with it own access message part (45). In the case of a considered mobile station (Yes), the connection to the base station is assigned, and the next access message part of its own is transmitted (46 is Yes). Then, access messages are transmitted (47), unit the access process is completed (46 is No) and until the check message not having the sum of an inspection is received (48). |
