The regulator's current rules state that, for channels three to five, the "total amount of advertising in any one day must not exceed an average of seven minutes per hour of broadcasting".
Other channels are allowed up to nine minutes of advertising per hour of broadcasting, plus an extra three minutes for teleshopping.
The review on advertising frequency and length was mentioned in an Ofcom report to Culture Secretary Nadine Dorries on the PSB licences of channel three and channel five.
The report said: "We are also looking at the rules that set the frequency and length of advertising on broadcast TV.
"We have had initial discussions with stakeholders, and we expect to be able to outline our next steps later this summer."
Subscription streaming services like Netflix and Disney+, which do not carry advertising for most subscribers, are set to be regulated by Ofcom for the first time in a move that had long been requested by traditional broadcasters.
Previous Ofcom research found that many older audiences "often prefer to record content as a series so that they can skip the ads" - while younger viewers also aired frustrations with the amount of adverts.
In a statement, an Ofcom spokesman said: "We're scoping a range of options, but before we form any plans we'll listen to different views and examine what TV viewers say.