The Rugby League International Federation Board approved a rolling calendar of international games for the next eight years at its Congress in York, England over the weekend.
Australia, New Zealand and Tonga will compete in one Oceania Cup group in 2019 with Samoa, Fiji and Papua New Guinea in the other.
The tournament will be repeated in 2020 and 2022, either side of the 2021 World Cup, which will mirror the European Championship in the Northern Hemisphere.
