3 (40) The Fig. 2 is a multi-hop relay environment. The standard of LTE-A cannot support the multi-hop relay environment. Please propose a solution based on the standard of LTE-A to send D1, D2, D3 and D4 from the eNB to UE, and how to send U1, U2, U3 and U4 from the UE to eNB. ABÄ°DI D2 |D3|D4 eB Di