School of Electronic and Information Engineering;
Xi’an Jiaotong University;
CCF;
ACM;
IEEE;
Department of Computer Science;
Illinois Institute of Technology;
Chicago;
IL 60616;
U.S.A.;
Department of Information Science;
University of Texas at Dallas;
Richardson;
TX;
U.S.A.;
Network Center;
The Aviation University of Air Fone;