Analysis of channel access mechanism on 5 GHz unlicensed band

Data offloading on unlicensed band is one of the significant solutions in the era of the mobile traffic explosion. To utilize spectrum resource on unlicensed band, it is required to fairly coexist with other devices which are operating in the same channel. It can be achieved all secondary users to comply with channel access mechanism. In this paper, we analyze the frame based and load based channel access mechanism for 5 GHz unlicensed band defined by European regulatory domain. Numerical and simulation results are provided to validate our analysis.