28-08-2012, 11:15 AM
The Application of Femtocells as a Technical Solution for a Telecomunication Provider
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Abstract
The technology of femtocell application will most likely enable reduction of costs for telecommunications provider. This paper presents the installation and use of femtocells, as well as the problems one may encounter during this process. It also offers a technical solution, with its basic characteristics and the possibility of realization at a particular location, illustrated by the example of a telecomunications provider. The possibilities of implementation of new equipment to existing mobile networks are also discussed, followed by the comparative analysis which aims at emphasizing the significant reduction of electrical energy consumption between GSM macro base stations and femtocell application.
Introduction:
Femtocells in the next generation of mobile networks
By atempting to service a growing number of users and by increasing bit rate, mobile network providers are aiming at improving their performance. The demands for better service are also constantly increasing, especially in densely populated areas where standard coverage is insufficient. Therefore, the need for the new solution which would accommodate clients’ needs and simultaneoulsy provide high-quality wireless mobile network, is always present. Since this new solution should also contribute to saving electrical energy consumption of macro base stations, the realization and application of femtocells, also known as home mobile base stations, seems to be a viable proposition.
3G technology mobile operators presented femtocell technology towards the end of 2007. in order to enable more enhanced services for their clients, mainly for data transfer. These activities prompted the international organization in charge of 3G procedures 3GPP (Third Generation Partnership Project) to define the whole set of standards regarding femtocells [1].
Comparative analysis and conclusions
In our opinion, the analysis of the GSM macro base stations which provide indoor and outdoor coverage of the object would be sufficient. The proposed technical solution envisages the use of omnidirectional antennas as well as distributed antenna system. On the floors of the object, the provider has installed antennas conected to base stations with optical fibres. The number of antennas is different for each floor, as illustrated by Figures 3,
4 and 5. The position of these antennas could be taken as the recommended position for femtocell location. Since each femtocell represents only one real mobile telephony cell, 3 femtocells are recommended for installation at the each location of the antenna.
Conclusion
The advancement in new technology and increasing demands of users for enchanced bit rate are highly likely to result in the need for commercial use of femtocells. In the past years, the telecommunications networks for voice transfer were dominant and had broad tolerance for signal quality. Data transfer networks demand much higher signal quality, the one that would enable bit rate of hundreds of megabites for the user. Therefore, a logical question arises: why wouldn’t the telecommunications providers initiate the installation of femtocells themselves, in order to service demanding business and private clients? It would result in higer QoS, with significant savings in power consumption.