Search results for: Jaroslaw Lachowski
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The Telecommunications Handbook > 417 - 514
This chapter presents the functional blocks and interfaces of long term evolution/evolved packed core (LTE/EPC). The new architecture is illustrated with comparisons of solutions with earlier mobile communications systems. The LTE/system architecture evolution (SAE) system consists of several interfaces internally and between the other 3rd Generation Partnership Project (3GPP) 2G/3G networks. The...
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Multicarrier operation offers significant gains by bandwidth extension as well as by its inherent ability to exploit diversity while transmitting on different adjacent carrier frequencies. A natural enhancement of this technique is multiband operation, since at different non-adjacent bands even more diverse radio conditions are to be found. Furthermore, since penetration of Third Generation (3G)-capable...
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One of the key enhancement elements of next generation LTE networks is the deployment of relays. Relays provide added performance gains in the form of enhanced coverage for mobile UEs situated in poor coverage areas. Relays provide coverage gains in high shadowing areas and also help reduce power consumption at the UE terminal by enabling a better communication channel. A striking aspect of relays...
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One example of heterogeneous networks include deployment of outdoor low power pico eNBs in existing macro-layer networks. Placing these within the coverage area of macro eNBs introduce several challenges in terms of assuring low interference levels while at the same time improving the performance of the users. In this paper we focus on the comparison between three main frequency reuse schemes: Co-Channel,...
