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An energy-efficient association control algorithm for wireless networks is proposed. Both the wake-sleep switch of each base station and the resource reservation overhead of its neighboring base stations are considered as factors to impact the base station on-off switch decision and the user association. The simulation results show that the overall system energy consumption can be reduced thanks to...
We consider traffic engineering (TE) in networks where quality of service (QoS)-guaranteed as well as best effort (BE) services are present. We propose a joint TE optimization technique for both QoS and BE traffic using multi-objective optimization framework. We show that joint TE optimization results in more efficient network resource usage compared to sequential TE methodology where TE decision...
The telecommunication industry is entering a new era. The increased traffic demands imposed by the huge number of always-on connections require a quantum leap in the field of enabling techniques. Furthermore, subscribers expect ever increasing quality of experience with its joys and wonders, while network operators and service providers aim for cost-efficient networks. These requirements require a...
This paper presents a framework to coordinate the operation of radio nodes for the future fifth generation (5G) mobile wireless networks. Based on software-defined operation, we introduce entities of the control plane and interaction among them in this framework. The framework brings a number of benefits. It adapts radio coordination to network and traffic dynamics, enables flexible, on-demand radio...
Connectivity is a crucial performance parameter for wireless multi-hop networks, which is affected by factors like the communication radius, the node density as well as the link quality. In this paper, we solve the critical communication radius problem in wireless multi-hop line networks with unstable links. Specifically, we deduce determinate upper and lower bounds of the critical radius, and validate...
Delay Tolerant Network (DTN) is a kind of networks that have no fixed path between nodes due to lack of continuous network connectivity. To achieve successful communication and to improve performance in DTN is always a challenge work. Most existing works are based on designing high efficient routing protocols and have not emphasized the MAC layer as well as new technologies available in the Physical...
For a wireless ad hoc network, a crucial performance requirement is its connectivity. Considering the power constraint and the dynamic environment, designers usually would like to keep the network being fully connected as long as possible, so as to ensure a largest possible coverage. On the other hand, the number of nodes and their battery power consumption are also expected to be minimized. These...
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