Description  Claims  Drawing  Cited references 

US61324612   [0001] 
US20050239451A   [0004] 
WO2009009264A   [0005] 
US2008002658A   [0007] 
WO2004103009A   [0008] 
US2010080139A   [0012] 

Guard period in UL backhaul subframes   [0009] 
Access-backhaul timing relationship for UL   [0010] 
Design of Relay Frame Timing in LTE-A   [0011] 
Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation   [0093]