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This paper describes a theoretical framework for rate allocation to maximize the power efficiency of overall heterogeneous wireless networks whose users are assumed to have multihoming capabilities. Therefore, the paper first presents a power consumption model considering the circuit power and radio transmission power of each wireless network. Using this model, two novel power efficient rate allocation...
For improving Quality of Service in wireless networks, multi-homing techniques have been considered as a promising solution. To date, most of the conventional research efforts have been focusing on user side interests (e.g. improving throughput, minimizing packet loss). However, a service provider could have different interests (e.g. profit, energy efficiency). Nevertheless, to the best of our knowledge,...
Radio frequency spectrum within 3–300 GHz has been investigated for the next generation of mobile broadband system. The mmWave mobile broadband (MMB) system is expected to achieve high capacity by utilizing immense bandwidth. However, high attenuation property of mmWave generates outage zone where the signal does not reach frequently in MMB system. To cover outage zone, relay operation has been suggested...
The growing mobile data demand has led to the investigation of millimeter-wave (mm-wave) band which makes the communication systems can achieve multi-gigabit data rate. Due to the high attenuation phenomenon of mm-wave, however, the mm-wave system contains the ``dead zones'' where users cannot receive mobile data. To cover dead zones, deployment of relay stations becomes an important issue for constructing...
As bandwidth scarcity problem is widely agreed, communication through high frequency band has been considered for future commercial cellular networks. However, according to its radio propagation property, out of service area will be increased. So, relay-based cooperative communication has been emerging as a promising solution. In relay-based cooperative communication, energy efficiency is crucial...
Hierarchical cooperation (HC) has been proven in linear capacity scaling for ad hoc networks when density of nodes exists. This technology has recently been studied as a new generation network architecture (i.e., 5G). However, for cellular networks, there have been few studies on MAC protocols for HC in relation to signaling. In particular, energy consumption due to frequently changed clusters for...
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