| 摘要 |
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 |
