5G key requirements driving evolution of mobile access and wireless x-haul to millimeter-wave and sub-millimeter ranges Analysis of the most important requirements of 5G to drive the trends and technology at (sub-)millimeter-wave bands for wireless backhaul / front-haul network Millimeter-wave access - application scenarios and potential bands for 5G at millimeter-wave - Massive MIMO architectures comparison - hybrid beam-forming architectures - technology challenges Millimeter-wave backhaul - how backhaul can meet the demand of capacity and network densification - current spectrum use, considerations on new needs deriving from mobile access moving to higher frequencies - new spectrum above 100 GHz and innovative ways to use it - millimeter-wave technical/technological trends - research activities in the D-Band (130 to 175 GHz) for outdoor backhaul applications - Standardization status - Technology overview (semiconductor trends): MMIC, Antenna, Engineering solutions, Field trial registration results