Methods, systems, and computer readable media for conducting a velocity check for outbound subscribers roaming to neighboring countries

A system for conducting a velocity check for outbound subscribers roaming to neighboring countries, the system comprising:

• a network gateway including at least one processor, wherein the network gateway is associated with a home network located in a home country;
• a location mapping database for storing geographic reference position data that is mapped to a plurality of cell identifiers;
• and
• a velocity check engine in the network gateway and implemented using the at least one processor for receiving, from a mobile switching center (MSC) associated with a visited network located in a foreign country that neighbors the home country, an ingress signaling message related to a mobile device roaming in the visited network, determining from a country code identifier included in the ingress signaling message that the foreign country is a neighboring country to the home country, conducting a velocity check of the mobile device based on the determination that the foreign country is a neighboring country, wherein conducting the velocity check comprises sending, to a home location register (HLR) in the home network, an interrogation request message containing a mobile subscriber identifier associated with the mobile device, receiving an interrogation response message containing age of location information and cell identifier information corresponding to the mobile subscriber identifier, utilizing the cell identifier information to determine a first geographic reference position and the country code identifier included in the ingress signaling message to determine a second latitude-longitude position, determining an estimated transit time of the mobile device using the first geographic reference position and the second geographic reference position, and determining if the ingress signaling message is to be forwarded to the HLR by comparing age of location information with the estimated transit time.

A non-transitory computer readable medium having stored thereon executable instructions that when executed by a processor of a computer controls the computer to perform steps comprising:

• receiving, by a network gateway associated with a home network located in a home country from a mobile switching center (MSC) associated with a visited network located in a foreign country that neighbors the home country, an ingress signaling message related to a mobile device roaming in the visited network;
• determining from a country code identifier included in the ingress signaling message that the foreign country is a neighboring country to the home country;
• conducting a velocity check of the mobile device based on the determination that the foreign country is a neighboring country, wherein conducting the velocity check comprises:
• sending, to a home location register (HLR) in the home network, an interrogation request message containing a mobile subscriber identifier associated with the mobile device;
• receiving an interrogation response message containing age of location information and cell identifier information corresponding to the mobile subscriber identifier;
• utilizing the cell identifier information to determine a first geographic reference position and the country code identifier included in the ingress signaling message to determine a second latitude-longitude position;
• determining an estimated transit time of the mobile device using the first geographic reference position and the second geographic reference position;
• and
• comparing age of location information with the estimated transit time to determine if the ingress signaling message is to be forwarded to the HLR.