Huawei Proposes a New Chip Scaling Law That Sidesteps US Sanctions

At the opening of the IEEE International Symposium on Circuits and Systems in Shanghai, Huawei announced a new chip design strategy. He Tingbo, a company representative, proposed rethinking the very logic of progress in the semiconductor industry.

A New Way to Look at Performance

Traditionally, chip power grows as transistors get smaller. This is Moore's law, which has driven the industry for half a century. Huawei proposes a different lens: instead of shrinking size, focus on reducing the time an electrical signal takes to pass through the chip. The company calls this new principle the Tau Scaling Law.

He Tingbo stresses that this is not a revolution in the sense of a fundamentally new invention, but an evolution: a move to a new frontier of optimization. Tau (the Greek letter denoting time in physics) is a parameter that stays under engineers' control even when the available manufacturing technologies are restricted.

The idea is simple: if you cannot make electrons faster, shorten their path. Less distance between components means less delay, which means a higher clock speed and, ultimately, higher chip performance.

Six Years of Undisclosed Work

The key point of the announcement is that it is not the start of development but an interim result. Tingbo says Huawei has spent six years, away from the press and the radar of the Western industry, developing chips based on the Tau Scaling Law. This means the company has not just ideas and prototypes but designs ready for production.

Announcing at an international IEEE conference is a statement that the technology has matured. The company is showing its working path to the global scientific community.

• Focus on signal propagation time, not transistor size
• Use of available (more mature) manufacturing processes
• Staying competitive without access to EUV lithography

Context: Sanctions as a Trigger

The announcement has a concrete political backdrop, which, paradoxically, pushed the company toward innovation. The US imposed broad sanctions restricting the supply of the most advanced manufacturing tools to Huawei, above all EUV lithography and chip design technology from ASML and ARM.

Without them, the standard path of following Moore's Law down to ever smaller process nodes (5nm, 3nm, 2nm) became impossible for Huawei. Instead, Huawei has proposed a different game: if you cannot play by Western rules, rewrite the rules yourself.

What This Means

If the Tau Scaling Law proves practically effective, and Huawei claims it already does in its chips, it could radically change the balance in the semiconductor industry. A company without access to ASML's most advanced equipment would be able to stay competitive on other optimization parameters.

For the rest of the world, this means new approaches to chip performance will develop in parallel with Western standards, not in their wake.