Performance enhancement in cellular networks with dynamic cell sizing

This paper investigates tlze potential capacity iniprovements inade possible through tlze use of dynamic cell sizing in a cellular network. The purpose of dynamic cell sizing is to reduce cell radii und tlzus enable in-cell users to increase their transmit powers. The use of higher transmit powers suppresses intercell interference and leads to an overall increase in capacity. This paper discusses the degree of capacity enhuncenzent that can be achieved in this manner. The analysis indicates that the capacity of a single cell can be increased by as much as 38%. However, under un fomz traffic conditions, this results in a ratio of supported-to-offered trajfic of just 0.2, which is cleurly unsatisjuctory. Dynai71ic cell sizing per$mns sigizificuntly Oetter in hot-spot conditions, where the in-cell truflic ,follows a noriizal distribution with the highest density in close proximity to tlze basestdon. The ratio of supported-to-oflered traflic under these conditions was found to rise to 0.6 to 1.0 depending on the traffic standard deviation and the location of the hot spot.