A broadband cellular network device comprises a base station controller unit (1), an asynchrouous transfer mode controller (2) adapted to control the distribution of cellular traffic consisting of asynchrouous transfer mode cells in trunking mobile communication networks based on ATM technology, and...http://www.google.com.hk/patents/US6859447?utm_source=gb-gplus-share專利 US6859447 - Broadband cellular network device
