This article is mainly to sum up the series problems of interior distribution system of WCDMA network of the China Unicom. Especially

we focus on solving the problem of pilot pollution between the high buildings and large mansions. Our proposal is that we can provide with the different frequency between the indoor and outdoor in order to solve this problem

and at the same time

we can also offer the way of optimization to deal with the other problems caused by the process of resolving the pilot frequency pollution.