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Long Term Evolution (LTE) carrier aggregation with 5GHz unlicensed national informational infrastructure (UNII) band has been suggested by the industry as a good solution to handle the rapidly increasing amount of data traffic. To provide fair coexistence of LTE-licensed assisted access (LTE-LAA) and Wi-Fi on 5 GHz, several coexistence mechanisms have already been proposed. Nevertheless, as one of...
Small cells are becoming essential to offer a promising solution for dramatic mobile traffic growth in future mobile networks. Especially, massive enterprise femtocells are expected to provide high capacity to fulfill high data demands in buildings in order to offload indoor traffic from outdoor macro cells in that over 80% of mobile data traffic is generated indoors. However, as one of the major...
In order to avoid inter-cell interference, OFDMA networks are flexible in terms of radio resource management techniques, supporting different frequency reuse schemes (FRSs), which in turn, may decrease inter-cell interference and increase network performance. However, because most of them are based on fix patterns, these FRSs cannot cope with the uneven distribution and dynamic behavior of the traffic...
The network planning aims to allow the maximum number of users and throughput in a network. This imposes a demanding performance requirement on the new relay-based architecture for mobile WiMAX, in which the capacity estimation is complex. In the network design process, where interference avoidance plays an important role, WiMAX supports reconfiguration of the subchannel usage with some frequency...
To overcome interference, OFDMA networks support different but fixed frequency reuse schemes and subchannel allocation techniques. However, these fixed schemes and techniques are not the most suitable solutions in mobile scenarios, where the behaviour of the channel and the users are continuously changing during the day-time. This paper presents a new approach to the frequency assignment problem adapted...
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