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Cloud radio access network (C-RAN) separates the baseband processing from the radio transmissions in the base station. The baseband processing is done at the baseband unit (BBU), centrally for a huge number of remote radio head (RRH). The BBU pool works virtually and significantly to reduce power consumption in the cellular networks. Efficient coordination among these BBUs can improve network performance...
The problem of energy efficiency appears in every sphere of human activity. At the same time new services require higher processing and transmitting rates. In this paper, the algorithm of tasks scheduling in the server cluster PCPB — Power Consumption and Performance Balance — is presented. It is aimed to reduces the total power consumption of the server cluster without reducing its computing performance...
In next generation networks, ultra-dense small cell networks are emerging to deal with exponential data traffic increasing. With the deployment of small cells (SCs) becoming increasingly dense, these cells may be under-utilized during quite a few period of time. Depending on this circumstance, we aim to maximize the network energy efficiency by deactivating such under-utilized cells, subjecting to...
With the quick advancement of the Internet, wireless communications have gotten remarkable consideration. Wireless sensor systems are outfitted with minor, essential batteries and along these lines it is important to plan vitality effective calculations to draw out the system lifetime. In remote sensor systems (WSNs), the sink versatility along an obliged mode can enhance the vitality proficiency...
This paper proposes an energy-aware packet delivery operation through network node clustering for green communications. Energy consumption has become a key factor for the evaluation of performance index in telecommunication industry. In order to prevent a waste of energy in wired network, the proposed algorithm configures energy-aware cluster consisting of one header node and multiple member nodes...
Cloud Radio Access Network (C-RAN) offers an evolution in base stations architecture. The base station is broken down into a Base Band Unit (BBU) and a Remote Radio Head (RRH). While BBUs are pooled in a single geographical point, RRHs are distributed across multiple sites. In conventional architectures, a one-to-one logical mapping exists between BBUs and RRHs. One BBU is assigned to one RRH, so...
Power consumption of datacenters, especially of large-scale systems, has a growing concern nowadays due to economic and ecological reasons. In this paper, we propose a power-aware mechanism based on DVS that takes into account energy conservation of homogenous clusters and schedulability of deadline-constrained tasks. Although power-aware real-time scheduling heuristics have been intensively studied...
In this paper, we study the energy efficiency problem of the heterogeneous network composed of pico clusters deployed within the macro cells. We would like to find the optimal transmit power of the pico cells such that the energy efficiency of the cluster is the largest. A cell-specific cell selection bias is also considered so that each user may choose its serving cell in the most energy-efficient...
As traditional wireless cellular networks are facing a rapid growth of traffic demand, the future networks may consist of a large number of small cells which are densely deployed. However, a large number of small cell Base Stations (BSs) will consume a lot of energy, which is not conductive to improve the network Energy Efficiency (EE). The purpose of our research is to optimize the dense small cell...
Network lifetime is crucial in Wireless Sensor Network (WSN) systems since recharging or exchanging the sensors is difficult and expensive. Clustering techniques provide an interface for WSN topology management to extend network lifetime. Existing clustering algorithms, such as LEACH and HEED, can significantly reduce the power consumption on each sensor and thus prolong the network lifetime. However,...
We have designed Home Energy Management System which is able not only to collect and display data, switch off (on) the appliances, but also to deal with identification of the appliance(s) plugged-in to a single power socket sensor. For that purpose, in this paper we are proposing a data mining algorithm that analyzes the collected consumption data from different appliances in order to identify a cluster...
This paper presents new multi-criterion mining algorithm, which as a module of the Home Energy Management System (HEMS) can identify the operating states of a combination of controllable appliances. There is a close interaction between HEMS and this algorithm. The new incoming samples, collected by HEMS, are associated with appropriate cluster using the mining algorithm. This information is submitted...
Energy conservation is a key issue in ad hoc wireless network operation. Placing relay nodes (routers) at appropriate locations can substantially lower the power requirements of communicating nodes, thereby reducing overall energy needs. We investigate router placement (RP) for energy-constrained wireless networks, and present RP algorithms that aim to minimize total energy consumption. We consider...
Expected growth in use and implementation of wireless sensor networks (WSNs) in different environments and for different applications creates new security challenges. In WSNs, a malicious node may initiate incorrect path information, change the contents of data packets, and even hijack one or more genuine network nodes. As the network reliability completely depends on individual nodespsila presence...
Sink mobility has become an increasingly important requirement of various sensor network applications. Handling such mobile sink conditions brings new challenges to large-scale sensor networking. This investigation proposed a hybrid-structure routing protocol (HSRP) that combines the benefits of grid-based and cluster-based structures. Grid-based structure is designed to solve the cluster head selection...
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