1. A method of a base station, the method comprising:transmitting system information including information on resource groups;
receiving, from a terminal, a resource allocation request;
receiving, from the terminal, a control message including location information of a first zone where the terminal is located; and
allocating at least one resource group among the resource groups based on the location information,
wherein a number of the at least one resource group allocated to the terminal is determined based on a number of terminals in a connected state and a number of terminals in an idle state which are located in the first zone.