Abstract
We propose and compare three novel heuristics for the calculation of the optimal cell radius in mobile networks based on Wideband Code Division Multiple Access (WCDMA) technology. The proposed heuristics solve the problem of the load assignment and cellular radius calculation. We have tested our approaches with experiments in multiservices scenarios showing that the proposed heuristics maximize the cell radius, providing the optimum load factor assignment. The main application of these algorithms is strategic planning studies, where an estimation of the number of Nodes B of the mobile operator, at a national level, is required for economic analysis. In this case due to the large number of different scenarios considered (cities, towns, and open areas) other methods than simulation need to be considered. As far as we know, there is no other similar method in the literature and therefore these heuristics may represent a novelty in strategic network planning studies. The proposed heuristics are implemented in a strategic planning software tool and an example of their application for a case in Spain is presented. The proposed heuristics are used for telecommunications regulatory studies in several countries.
Highlights
Mobile communications field is, nowadays, one of the most relevant technology research topics
In order to validate the heuristics presented in this paper, we have tested them in several experiments based on scenarios with different service combinations
This paper proposes three different algorithms for the calculation of the cell radius under traffic criteria in multiservices scenarios, named iterative, reduced and combined
Summary
Nowadays, one of the most relevant technology research topics. From analog (like Advance Mobile Phone System), to digital systems (like Global Systems for Mobile (GSM) Communications or IS-95), and currently to 3G multiservice systems, such as Universal Mobile Telecommunication Systems (UMTSs) and 4G Long Term Evolution (LTE), has required the development of new technics, and produced the convergence of several telecommunication research areas. The high level of acceptance of the mobile technologies by customers (see Figure 1), and their need of new and more complex services, is a catalytic element for doing research to obtain more efficient technics in mobile communications. The general architecture of a mobile network may be described in the same way as the traditional fixed network; it is formed by an access network and a backbone network.
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