A method includes receiving a connection request from a mobile device at a network device to allow connection of the mobile device to a core network of the first service provider through a first base station and determining whether a backhaul connection between the core network of the first service provider and the first base station is congested by the network device. The backhaul connection is determined to be congested when L is greater than (D−B)/T. When the first backhaul connection is determined to be congested, the method also includes preventing the first base station from connecting the mobile device to the core network.