【Introduction】

   PIMRC 2003 is in fact a “full-size” major conference of IEEE communications society which is the first time come to China, the largest developing country and also the largest mobile telecommunication market in the world . as a country with more than 5000 years’ civilization, China is gaining more and more momentum since her implementation of open policy in the 80’s and the WTO enrolment last year .Telecommunication market in China ,as well as related research and development activities, grows in pace much faster than its averaged economy ,and becomes an attraction around the globe. Today ,Chinese telecommunication market has been raching the worldwide No1. in scale, holding over 240 million PSTN terminals and more than 230 million mobile terminals ,where new challenges facing with such a huge—scale network occur everyday