Yozan Inc., a Tokyo-based mobile technology venture, said Tuesday it will start providing broadband mobile Internet access of up to 8 megabits per second in the fall after setting up 4,000 antenna bases across Tokyo.

The company says the service will be the nation's first full-fledged mobile broadband service accessible over a wide area, including accessible outdoors.

Yozan plans to use the space at antenna facilities operated by the personal handy-phone system of Tokyo Telecommunication Co., which has agreed to sell the PHS unit to Yozan Inc.

According to Yozan President and Chief Executive Officer Sunao Takatori, customers will be able to access the Internet at a speed of 32 Kbps in Tokyo, 2 Mbps outdoors and 8 Mbps in buildings equipped with wireless LAN technology.

Clients will also be able to use a fixed-rate telephone service that takes advantage of Internet protocol technology.

Yozan will gradually expand its wireless LAN service in major cities across the country after the fall of 2003, he said.