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mmWave meshed network is a promising architecture for cost-efficient wireless backhaul of millimeter-wave overlay heterogeneous network (mmWave overlay HetNet). As user distribution in practice is time-variant and spatially non-uniform, mmWave meshed backhaul should be controlled adaptively. This paper proposes a novel method to control mmWave meshed backhaul for efficient operation of mmWave overlay...
By 2020, next generation (5G) cellular networks are expected to support a 1000 fold traffic increase. To meet such traffic demands, Base Station (BS) densification through small cells are deployed. However, BSs are costly and consume over half of the cellular network energy. Meanwhile, Cloud Radio Access Networks (C-RAN) has been proposed as an energy efficient architecture that leverage cloud computing...
Power models are crucial to assess the power consumption of base stations (BSs) without quantitive description. Currently available models seldom consider the dynamic factors such as indoor and outdoor temperature. As power model will affect the energy-saving gains of different green resolutions, in this paper we provide such power models for mobile communication BSs relying on practical data collected...
In this paper, we study how to deploy different kinds of base stations (BSs) in green cellular networks. Unlike previous studies which deploy BSs only based on the peak traffic load, we propose an optimal deployment scheme to minimize the total power consumption over time and spatial domain based on the traffic variation characteristics. Our method can be decomposed of two steps: how to achieve limit...
Ethernet is one of the first computer networking technologies for which a standard has been developed to improve its energy efficiency. The Energy Efficient Ethernet (IEEE 802.3az) standard was approved in 2010 and is expected to enable savings of several Terawatt hours (TWh) per year. As switches that implement the standard become available and are deployed, it is important to understand how their...
In this paper, a "Game Theory" approach for finding an optimal path in a "Wireless Sensor Network" is discussed. WSN is one of the most interesting research fields in the communication networks, and is the center of attention in recent years. In our model, a pricing and payment technique is presented to obtain an optimal path in a WSN by considering reliability, energy and traffic...
In this contribution, we explore and evaluate the feasibility and the impact of power management policies, able to well suit a heterogeneous set of highly modular architectures, generally used for developing today's network equipment. The proposed policies aim at optimizing the power consumption of each device component with respect to its expected network performance. In order to provide an experimental...
To enhance the energy efficiency of broadband wireless access devices based on battery power, a traffic-aware based adaptive sleep mode operation was proposed for IEEE 802.16e power saving mechanism. By analyzing the behaviors of a mobile station working in the sleep mode operation with a Markov chain model, we explore the relationship among traffic, energy consumption and delay. Based on the analytical...
To enhance power efficiency of battery powered wireless access devices, the behaviors of the mobile stations (MS) working in the sleep mode operation in IEEE 802.16e was researched with a method of the Markov chain model. By exploring the relationship among traffic load, power consumption and delay, we present a cross-layer design-based algorithm to tune the initial sleep window according to the randomization...
In this paper, we propose a dynamic traffic load-aware sleep mode operation to improve the power efficiency of battery powered IEEE 802.16e devices. By analyzing the sleep mode operation with a Markov chain model, we explore the relationship among traffic load, power consumption and idle check time. Based on the analytical results, we propose a dynamic algorithm to tune the idle check time according...
In this paper we propose a set of different configurations of failure recovery schemes, developed for network-on-chip (NoC) based systems. These configurations exploit the fact that communication in NoCs tends to be partitioned and eventually localized. The failure recovery approach is based on checkpoint and rollback and is aimed towards fast recovery from system or application level failures. The...
In this paper, we address the issue of transmission power control (TPC) in wireless ad hoc networks. Power control plays an important role in energy saving and network performance enhancement. However, the existing TPC schemes either face the problem of hidden and exposed terminal or have additional hardware requirements. We propose a novel distributed power control protocol, called Receiver Initiated...
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