FIELD: radio engineering, communication.
SUBSTANCE: invention relates to mobile communication. A new SGSN receives a location update message from a terminal having moved from the management area of an old SGSN to the management area of the new SGSN, and the new SGSN having received the location update message sends a GTPv2 signal for obtaining communication path information corresponding to GTPv2, to the old SGSN. The old SGSN, upon receiving the GTPv2 signal, if having communication path information of GTPv1 as a logical communication path established for the terminal, sends, as a response, a GTPv2 signal in which the communication path information by GTPv1 is set in an additional parameter, to the new SGSN.
EFFECT: reliable transmission of link information between an old SGSN and a new SGSN.
5 cl, 11 dwg
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