There may be all kinds of technology issues, business plan problems and potential failures to address before the mobile Internet becomes a success. But for Tim Berners-Lee there’s really only one issue.

On the opening day of Mobile Internet World in Boston, the man credited with inventing the World Wide Web told a packed hall that the mobile Internet needs to be fully and completely the Internet, nothing more and nothing less. It needs to be free of central control, universal, and embodied in open standards.

“The Web is an open platform on which you build other things,” he said. “That’s how you get this innovation. The Web is universal: you can run it on any hardware, on any operating system, it can be used by people of different languages…It’s a sandbox where people can [play and] exercise their creativity. It’s very important to keep the Web universal as we merge the Internet with mobile.”

The title of his talk was “Escaping the Walled Garden: Growing the Mobile Web with Open Standards.” The “walled garden” is the metaphor that describes today’s cable TV and cellular data networks, where subscribers can only use devices authorized by the carrier, and can only access content and services authorized by the carrier, the exact opposite of the World Wide Web running over the IP-based Internet, which cell phone users access from their home and work PCs.

Though Berners-Lee didn’t mention Google’s new foray into mobile services, the search giant’s Android platform, a software development stack for mobile phones, is based on open standards, open source software and overseen by the newly organized Open Handset Alliance consortium.

PC users through an ISP can access independent movies on any site that offers them, Berners-Lee said. By contrast, a cable TV company acting as an ISP could block such access, because it wants subscribers to select the pay-per-view movies it alone offers.

Berners-Lee is director of the World Wide Web Consortium (W3C), which coordinates the work of its members to create Web standards and guidelines for the Web’s evolution. Two years ago, the group launched the Mobile Web Initiative to focus on standards to facilitate access to the Web by handheld devices over wireless connections. The focus of the MWI is to create standards and best practices for authoring content, and for serving it to and displaying it on any mobile device. Content becomes easily reusable, and can be re-used in ways the original creator could never imagine, he said.