The growth of the Internet, which I have been involved in, and the growth of mobile telephone services, which NTT DoCoMo has been a leader in, have been peculiarly interlinked and at the same time separate. The Internet is a lab experiment that broke free, and finds itself in a world of its own contriving, which it often does not understand. The mobile telephone world was developed for commercial purposes, and is in many respects the son of its father, the wired telephone system. | Editor Minoru NEXT GENERATION MOBILE SYSTEMS 3G and Beyond WILEY Next Generation Mobile Systems 3G and Beyond Edited by Minoru Etoh DoCoMo Communications Laboratories USA John Wiley Sons .