Description  Claims  Drawing  Cited references 

US2012155431A1   [0005] 
US2008267131A1   [0006] 
US2011026494A1   [0007] 
WO2015127987A1   [0008] 
EP0808034A2   [0009] 

Synchronized RACH-less Handover Solution for LTE Heterogeneous Networks   [0022]