Advances in Communication and Networking : Second International Conference on Future Generation Communication and Networking, FGCN 2008, Sanya, Hainan Island, China, December 13-15, 2008. Revised Selected Papers - Tai-hoon Kim, Laurence T. Yang, Jong Hyuk Park, Alan Chin-Chen Chang, Thanos Vasilakos, Sang-Soo Yeo ((Communications in Computer and Information Science))