Plans by the United States to create a 5G rival to Huawei could be a "challenge," one of the Chinese firm's top executives told CNBC, amid growing calls from American lawmakers to find alternatives for its next-generation networks. 5G refers to next-generation mobile infrastructure that promises super-fast data speeds and the ability to underpin some future critical infrastructure. Washington has maintained that Huawei is a national security risk alleging that Beijing could use the company's equipment for espionage. Huawei has repeatedly denied those claim. Beyond just relying on Ericsson and Nokia, the U.S. has also looked to finding alternatives to Huawei's networking equipment. In an interview with CNBC, Paul Scanlan, chief technology officer of Huawei's networking business, explained that the technical standards and actual implementation of 5G have taken about 10 years to create. "So the U.S. will do what the U.S. does ... that's a very very long game and that has its own sort of complexity built into (it) and Huawei has been addressing and looking at those things ourselves," Scanlan said. When asked if the U.S. could create a new alternative to Huawei quickly, Scanlan said: "It would be a challenge."

Republican Sen. Marco Rubio and a group of bipartisan lawmakers introduced a bill earlier this year "providing over $1 billion to invest in Western-based alternatives to Chinese equipment providers Huawei and ZTE." Meanwhile, Larry Kudlow, the White House's economic advisor, said in an interview with the Wall Street Journal that the "big-picture concept is to have all of the US 5G architecture and infrastructure done by American firms, principally." He added that Ericsson and Nokia could be a part of that.

Creating an alternative

In the U.K., Tobias Ellwood, chair of the House of Commons Defence Select Committee, said the Five Eyes — an intelligence alliance between Australia, Canada, New Zealand, the U.K. and the U.S. — should develop its own Huawei rival. "What I think we need to recognise is that if we do allow Huawei in temporarily, we need to quickly create an alternative, which doesn't exist at the moment. So you look at Cisco, Ericsson, Nokia, you need to get these companies together with some international state funding to create our own 5G capability," the lawmaker said in a recent interview with Global Defence Technology magazine. U.S. lawmakers including Rubio have called for the government to back an open source 5G architecture. The result, they claim, would allow new players to enter the networking equipment game for specific components rather than competing with Huawei in the entire architecture.

The one key thing is perhaps the U.S. has ... underinvested in this area of technology. Paul Scanlan chief technology officer of Huawei's networking business