A new channel borrowing assignment scheme: Teletraffic performance evaluation through discrete-event modeling in a mobile cellular environment

摘要

Frequency planning in cellular systems becomes more and more critical as cell dimensions decrease. To address this issue a new channel borrowing assignment scheme based on compact patterns is presented in this research, which allows the borrowing of resources in an adaptive way depending on the traffic conditions. By using efficient techniques in inter-cell and intera-cell reallocation phase of the presented scheme, its teletraffic performance has been further improved. This scheme does not require system-wide information and all it needs is information about the local cell and its interfering cells. As fundamentally a main objective of this research was study of user's mobility effect on performance of channel assignment strategies in a microcellular scenario, an innovative simulation environment using discrete time step model traffic simulator notion has been developed and exploited for extracting as realistic as possible results regarding tcletraffic performance of the proposed scheme.