The fifth generation(5G) wireless technology can offer plenty of benefits for example, high bandwidth, low latency, faster internet access, and large mobile coverage compared with former technics. However, in order to meet the above needs to support a given application in mobile terminal, we should deal with the key problems in 5G such as latency. In this thesis, we exploit different technologies to improve latency issues. Firstly, in chapter 2, we review the transport evolution for the radio access networks (RAN). In chapter 3, we talk about V-CRAN which is a solution to reduce latency and can increase the system throughput and the efficiency of resource usage.