Director General of the International Atomic Energy Agency (IAEA) Yukiya Amano is scheduled to arrive in Tehran Sunday for nuclear talks.
Amano will meet Iranian President Hassan Rouhani Sunday to "hear Iran's expectations at the top level", Iran's representative to the IAEA Reza Najafi said.
The talks aim at continuing the cooperation between Iran and the IAEA within the earlier "cooperation framework", Xinhua reported.
Amano's visit comes ahead of IAEA's Aug 25 deadline for Iran to provide a new set of information on its nuclear program.
Iran has agreed to provide the IAEA with mutually agreed relevant information and managed access to the Saghand uranium mine in the city of Yazd as well as to the Ardakan concentration plant.
The country will further submit an updated design information questionnaire for the IR-40 Arak heavy water reactor and take steps to agree with the IAEA on the conclusion of a Safeguards Approach for the reactor.
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Iran and the IAEA signed a joint statement in November 2013 to outline a roadmap on mutual cooperation on certain outstanding nuclear issues.
On July 20, an IAEA report said that Iran has complied with its obligations under the interim Geneva nuclear deal.
The IAEA said that Iran has diluted part of its 20 percent enriched uranium stockpile to five percent purity, while the rest is being converted into uranium oxide as agreed under a so-called Joint Plan of Action reached in Geneva last November.
The report added that Iran has also stopped enriching uranium beyond the five-percent level.
Earlier in July, Iran and the P5+1 group; comprising the US, China, France, Russia, Britain and Germany, failed to meet the July 20 deadline to reach a comprehensive agreement, but agreed to extend the nuclear talks until Nov 24.