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Coordinated Multi-Point (CoMP) transmission schemes can provide large spectral efficiency gains in cellular networks. Because of the coordination among neighbor basestations, the planning interval for resource allocation with CoMP is longer than for uncoordinated local transmission modes. Especially for bursty data traffic, this planning interval might be too long to keep up with changes in offered...
In this paper, we study the problem of gateway selection for throughput optimization in multi-radio multi-channel wireless mesh networks. In contrast to the various methodologies in the literature, we explicitly model the delay overhead that is incurred during channel switching, and consider this delay issue in the design of our mechanisms. From our best knowledge, it is the first time to take account...
Inefficient resource management may cause problems of reliability of service in shared medium wireless networks. Resources include bandwidth, processor cycles and buffers. Excessive competition for these resources can cause severe packet collision rates, compound network congestion, or even result in starvation of some nodes. In such a situation, data transmission is subject to very long delays and...
In this paper, an enhanced channel-assignment algorithm at the access points (APs) of a wireless local area network (WLAN) is validated. The algorithm aims to maximize the signal-to-interference ratio (SIR) at the user level in order to determine the appropriate channel at the APs. The initial channel assignment step at the APs is based on minimizing the total interference between APs. Based on this...
The performance of Bluetooth under the interference of RFID is investigated. A mathematical model is proposed to quantify the performance degradation of Bluetooth. The proposed model carefully takes PHY (i.e., the channel model, the transmitted power, the distance and the modulation) and MAC (i.e., the frequency hopping, the packet format and the traffic load) into account. Packet error rate (PER),...
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