Now that the government has licensed use of the 2.5-gigahertz bandwidth, Japan will soon be joining South Korea, Taiwan and others in offering next-generation wireless services for users of mobile phones and computers.

Some of those services will be based on WiMAX, a new technology that drastically increases the range and transmission speed of these devices. It may also be applied to game consoles and portable music players. Following are some questions and answers about the emerging technology:

What is WiMAX?