SYSTEM AND METHOD FOR APN CORRECTION GTP MESSAGES ASSOCIATED WITH GPRS DATA TRANSFER SERVICES OFFERED BY MOBILE OPERATOR USING A SPONSOR NETWORK

摘要

1. The method of correcting the name of the access point (APN) in roaming conditions when using the network of the sponsoring operator, which provides a GPRS tunneling protocol (GTP) filter, while when the message “form a packet data protocol (PDP) context” is received in the GTP filter from the serving GPRS support node, the GTP filter checks the data of the international mobile subscriber identifier (IMSI) and APN at the GTP level, while depending on the content of the IMSI and APN data at the GTP level, the GTP filter changes the GTP parameters in the GTP control plane for: directing the control plane traffic to the appropriate destination after APN correction, while the data plane traffic is set directly between the serving GPRS support node (SGSN) and the GPRS gateway support node (GGSN) or the dual / multiple IMSI.2 platform. The method according to claim 1, wherein the GTP filter modifies the GTP parameters in the GTP control plane to correct the APN, if applicable, the traffic directions of the message "create PDP context" in the GTP control plane to the following destinations: in the GGSN of the sponsor network, if the IMSI in the message “Create PDP context” refers to the subscriber of the network sponsoring the dual / multiple IMSI platform, if the IMSI in the message “create PDP context” refers to the double / multiple IMSI subscriber in the GGSN operator / activator of the mobile virtual network (MVNO / E), if IMSI is in The “create PDP context” message belongs to MVNO / E, and data plane traffic is established directly between the serving GPRS support node and the GPRS gateway support node or IMSI dual / multiple platform. 3. A method of transmitting GTP messages to and from a serving GPRS support node under roaming conditions when using the network of a sponsoring operator,