| 摘要 |
<p>The invention relates to a method for optimising routing to a first user equipment (T1, T2) roaming in a visited network (OP B, OP C) in a communications system comprising at least a home network (OP A), a visited network (OP B, OP C) and a relaying network (IPX, IPX1, IPX2, IPX3, IPX4). The method of the invention comprises storing (2-4, 3-2, 3-4, 3-6) a location information of a first user equipment (T1, T2) to a database (DB) external to the home network (OP A) and the visited network (OP B, OP C), the location information being associated with an identification information of the first user equipment (T1, T2); receiving (2-6, 3-10) a message from a second user equipment (T1, T2); recognizing (3-12) at least one identification information of the first user equipment (T1, T2) in the message; comparing (3-14, 3-16) the identification information stored in the database (DB) with the identification information received in the message; and if the both identification information matches, routing (2-8, 3-26) a communication according to the location information of the first user equipment (T1, T2).</p> |
