"There are no plans to reschedule the president's visit, slated for early December, unless India has other proposals," Natalia Timakova said.
India's commercial capital of Mumbai was hit by a wave of terrorist attacks on Wednesday evening as militants targeted high-profile soft targets, killing at least 130 people. The operation to free hostages is now coming to an end.
Commenting on the attacks, Medvedev, currently on a tour of Latin America, said, "We are concerned about the loss of life and consider that acts of terrorism of this type are harmful to the whole international order and a challenge to humanity."
Russia and India are currently preparing to sign a bilateral nuclear agreement initialed in February 2008. Under the agreement, Russia will help build another four reactors at India's Kudankulam nuclear power plant to add to the two that already exist. Further nuclear cooperation is also envisaged.
Russia and India have seen a growth in bilateral trade this year, which increased in the first nine months of 2008 by 41.6% to $3.8 billion year-on-year.
The last Russian-Indian summit was held in November 2007, when Prime Minister Manmohan Singh visited Russia.