Patent ID: 7873364

Claim:
An apparatus for calculating accounting of a mobile terminal of a subscriber accessing a base station, the apparatus comprising: a parameter information extractor for extracting parameter information for the accounting, comprising: a slot information extractor for extracting as first parameter information a number of slots allocated to the mobile terminal from a transmission frame transmitted to the mobile terminal, the number of slots included in mobile terminal identifier (ID) information of the mobile terminal; a mobile terminal ID information extractor for receiving a downlink broadcast from the base station, and extracting as second parameter information an amount of traffic of the mobile terminal based on the mobile terminal ID information of a downlink MAP information element and an uplink MAP information element included in the downlink; and a retransmission number extractor for extracting as third parameter information a number of retransmissions of traffic to the mobile terminal based on a NACK message received from the mobile terminal; a parameter information calculator for calculating an amount of information for each parameter information; and an accounting calculator for calculating accounting for an amount of traffic used by the mobile terminal accessing the base station, based on the calculated amount of information for each parameter information.