Basic Theories and Key Technologies in Next Generation Networks With the emergence of new applications and services such as social network services,online game and video,virtual reality,clouding computing,etc.,the explosively growing demand for heterogeneous data service brings both challenges and opportunities to the next generation networks.It is a consensus that the traffic carried by wireless networks in 2020 will be 1000X compared to 2010,which has given birth to 5th generation mobile networks featured with higher user experienced data rate,high energy efficiency,zero latency experience,smooth control experience,etc..Besides,massive entities including humans,machines and sensors need to be Basic Theories and Key Technologies in Next Generation Networks With the emergence of new applications and services such as social network services, online games and video, virtual reality, clouding computing, etc., the explosively growing demand for heterogeneous data service brings both challenges and opportunities to the next generation networks. It is a consensus that the traffic carried by wireless networks in 2020 will be 1000X compared to 2010, which has given birth to 5th generation mobile networks featured with higher user experienced data rate, high energy efficiency, zero latency experience , smooth control experience, etc..Besides, massive entities including humans, machines and sensors need to be