A method is performed in a network device for accepting or rejecting a request associated with a mobile device wirelessly connecting to a network. The method includes: receiving a request from a mobile device, wherein the request is associated with the mobile device wirelessly connecting to a network; and determining an expected connection duration for the mobile device, which is calculated using collected historical connection data that identifies a plurality of previous wireless connections to the network and identifies a corresponding duration of each previous wireless connection. The method further includes determining whether to accept or reject the request based on the expected connection duration for the mobile device.