Scheme 1: get on at Olympic Park Station of Metro Line 8, get off at Beitucheng Station, transfer to Jinsong Line 10, get off at Guomao Station, transfer to Sihui/Sihuidong Line 1, and transfer to Batong Line at Communication University Station.

Option 2: Bus No.740, get on at the west of Beichen Bridge (under the overpass at the southwest corner of Water Cube), go to the south of Red Scarf Bridge, and transfer to 73 1 and get off at dingfuzhuang Station. You can reach the north gate of Communication University.

PS: I am a student of Communication University of China.