The Federal Communications Commission will vote on the proposal to repeal net neutrality rules on Dec. 14. With the FCC Chairman Ajit Pai in charge, the proposal is expected to pass in a 3-to-2 vote.

But what exactly is net neutrality? Here's all you need to know:

What is net neutrality?

Net neutrality is the internet's guiding principle under rules put in place by the Obama administration in 2015. With net neutrality rules, internet service providers must treat all data online the same, regardless of its content. It prevents internet service providers from blocking, slowing down or charging extra fees for specific online content.

"You don't pay more for one type of phone calls depending on who sent me the message. Phone calls were all the same rates, so much permitted, so much per call. Same with the internet," said Jonathan Kotler, an attorney and media law professor at USC.

There are three bright line rules when you boil net neutrality down, said Elizabeth Bowles, president and chairwoman of the wireless broadband provider Aristotle. "They are: no paid prior authorization, no blocking and no throttling. Those three bright line rules are at the core of net neutrality," she said.

What might happen without net neutrality?

Without net neutrality, experts believe that internet service providers would be allowed to charge more depending on the content that was being sent.

"Now the internet [service] company says: 'Well, no, you can pay more and have faster speed.' But the key there is we'll be paying more money," Kotler said.

Big companies like AT&T, Comcast and Verizon would be able to block websites or content online. And internet giants like Google and Netflix may have to pay extra money to get "fast lanes."

Meanwhile, small online businesses may not be able to afford the expense of making sure their sites maintain fast connections.

“The way the FCC got their rules enacted, created unintentional harm to small businesses,” Bowles said.

This can impact users directly. "If you are a consumer, the only thing that protects you from high prices is choice, and without choice you're screwed," Kotler explained.

Why repeal the rules?

"Big companies are for it because they'll make more money," Kotler said.

But telecom companies have a different view to offer. Verizon, in a statement, described net neutrality as an unnecessary "outdated approach" in today's dynamic and competitive internet. "It undermined investment and innovation, and posed a significant threat to the internet's continued ability to grow and evolve to meet consumers' needs," the company wrote.

On Nov. 21, FCC Chairman Pai suggested that the proposal would stop the federal government from micromanaging the internet.

"Instead, the FCC would simply require internet service providers to be transparent about their practices so that consumers can buy the service plan that's best for them and entrepreneurs and other small businesses can have the technical information they need to innovate," he said.

What's next?

Now, pro-net neutrality advocates are organizing protests against the proposal on Dec. 7, a week before the vote, and calling for Congress to step in.

"It's a different Congress now. I don't see this Congress stepping in to do anything. And if they don't, they'll pass it through," Kotler said.