1. IEEE Draft Standard – Wireless LAN;IEEE Standards Department,1996
2. Overview of the GSM system and protocol architecture;Rahnema;IEEE Commun. Mag.,1993
3. General packet radio service in GSM;Cai;IEEE Commun. Mag.,1997
4. Introduction to 3G Mobile Communications;Korhonen,2003
5. Hotspot wireless LANs to enhance the performance of 3G and beyond cellular networks;Doufexi;IEEE Commun. Mag.,2003