College of Communication and Information Engineering;
Nanjing University of Posts and Telecommunications;
Jiangsu;
Nanjing 210003;
China;
Institute of Electronic System Engineering;
Beijing 10039;
China;
The Hong Kong Polytechnic University;
26680 Kowloon;
Hongkong;
Hong Kong;
China;
network virtualization; virtual network embedding; global topology attribute; node ranking;