A MOBILE COMMUNICATION SYSTEM OF MULTI-GAN STRUCTURE AND METHOD FOR ALLOTTING A RESOURCE USING THE SAME

A mobile communication system with a multi-GAN(Global Area Network) structure and a method for allocation resources by using the same are provided to make it possible to flexibly install a data position registering unit according to the amount of a load within the mobile communication system and also to automatically use other data position registering unit if one data position registering unit breaks down. A method for allocation resources by using a mobile communication system with a multi-GAN structure comprises the following several steps. In case of receiving a resource allocation request message is received via an MSC(Mobile Switching Center) from a mobile communication terminal, routing information is withdrawn from a routing table and one among m data position registering units is selected on the basis of the routing information(S300-S304). The resource allocation request message is transmitted to the selected data position registering unit(S306). It is checked whether a response message matched with the resource allocation request message is received from the selected data position registering unit(S308). If the response message is not received, the next routing information is withdrawn from the routing table, the next data position registering unit is selected, and the resource allocation request message is transmitted to the next data position registering unit. If the response message is received in the step S308, the resource is allocated to the mobile communication terminal(S310).