| 摘要 |
The invention relates to a method in the packet switched data transmission between a wireless communication device (MS) and a packet network (PLMN1, PLMN2), in which data transmission between the wireless communication device (MS) and the packet network (PLMN1, PLMN2) is controlled with at least one packet switching controller (SGSN). A group of connection states is defined in the method, from said connection states one is selected at a given time, and the selected connection state is set to the wireless communication device (MS) and to the packet switching controller (SGSN). In addition, said connection states are defined in the method to be: a ready state (303), in which packets are transmissible in an activated data transmission connection, a standby state (302), in which data transmission connection packets to transmitted and received are waited for, and an idle state (301), in which the data transmission connection is deactivated. As a connection state also an extended ready state (304) is defined, to which a transition from the ready state (303) is conducted, and in which data transmission connection packets to be transmitted or received are waited for.
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