W-CDMA is the acronym for Wideband Code Division Multiple Access, a communication method that complies with the IMT-2000 standard (the third-generation mobile phone method) specified by the International Telecommunication Union. The following data transmission capabilities have been established: 144 kbps while moving at high speed, 384 kbps while walking, and 2 Mbps while stopping. It is a globally unified standard.