Fig. 6(a) shows CDF of the number of distinct cells users visited during a day. It suggests that CDF of the number of distinct cells for each day is nearly the same. On December 28, 2013, around 35% of the users visited only one cell (non mobility users) and 90% of users visit less than 10 cells in a day. In addition, only 1% of users visited more than 24 cells and users with the highest mobility visited 249 cells. Fig. 6(b) is the CDF of number of distinct cells users visited in a week. The proportion of non mobility users is about 12%, and 50% of users access more than 10 cells. The most active users visited 917 cells in the week. The proportion of high mobility users is about 10% in the whole week. Basically, the more people across different cells, the more hand off activities he will generate, and therefore the more radio resource he will consume.