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We propose a new caching concept in which wireless nodes in Device-to-Device (D2D) network can cache the initialsegments of the popular video files and may share to users in their proximity upon request. We term this approach as Bootstrapping-D2D (B-D2D) system. Our findings suggest that caching only initial-segments creates a large pool of popular files, thus improving the probability of availability...
This paper proposes a novel cluster-based geometrical dynamic stochastic model for multi-input and multi-output (MIMO) communication environments. It is assumed that the base station (BS) has an adaptive learning ability and the BS preprocesses the received data in advance. In the proposed channel model, scatterers can be clustered into different clusters based on a machine learning cluster algorithm...
Wireless sensor networks (WSNs) have wide applications in environmental monitoring fields. Many algorithms were proposed for efficient information gathering. Especially the cluster based routing schemes are getting attention due to their energy efficiency. But in most of the clustering schemes, the base station (BS) which is used to gather the information is assumed to be located far from the field...
Wireless sensor network is one of the most important supporting technologies in the Internet of things, this paper studies the low power hierarchical routing protocol in the water environment. Energy is a vital problem in water environment. Wireless sensor network is composed of many wireless sensor nodes, which is a flexible and adaptive network. This paper studies the problem of low power consumption...
Ultra-dense networks are regarded as a promising candidate for providing high data rate at low implementation cost. With a dense and irregular deployment of access points, spatial reuse will be improved, and varying cellular coverage also known as the amorphous cell is provided, which leads to a more complicated interference environment. In this paper, a novel interference coordination strategy, based...
In order to support the booming capacity requirements of the fifth generation mobile system (5G), worldwide mobile operators are increasingly interested in offloading the cellular network traffics to Wi-Fi Access Points (APs) or small cells. Addressing on the offloading problem for delay-tolerant traffic, this paper proposes Wi-Fi delayed offloading strategy and resource re-allocation in Heterogeneous...
Location is an important context on which a broad range of context-aware applications can be built. Most previous approaches require the targets to carry electronic devices, while device-free passive localization is in need on many occasions. This paper proposes a device-free passive localization algorithm based on WiFi Channel State Information(CSI) and Support Vector Machines(SVM). In a physical...
Energy remains a major hurdle in running computation-intensive tasks on wireless sensors. Recent efforts have been made to employ a Mobile Charger (MC) to deliver wireless power to sensors, which provides a promising solution to the energy problem. Most of previous works in this area aim at maintaining perpetual network operation at the expense of high operating cost of MC. In the meanwhile, it is...
The authors proposed model of closed loop control together with programmable environment enabling the possibility to create intelligent, self-learning network based on existing mobile operator networks. Reluctance to research traffic processes in real time mode and distribute a request flows according to the types, quantity or concentration of subscribers in one or another network segment, etc. formulate...
Nowadays, wireless sensor networks attract researchers because of their popular applications in the military, communications, intelligence and medical aspects of vitality. Wireless networks can provide solutions to a lot of major problems in the world as they are low-cost, limited energy services, and there must be mechanisms to raise the efficiency of energy consumption to ensure a long lifetime...
Wireless caching enables popular files to be stored at the base stations (BSs) in advance, which has been considered as an efficient way to reduce the service delay and alleviate heavy burdens on the backhaul links. In this paper, we study the BS clustering scheme for the cooperative wireless caching networks (CWCNs) with heterogeneous file preference among users and BSs, and propose the minimum cost...
In this paper, a multi-group multi-way relaying network is considered. Multiple half-duplex nodes form a group and each node wants to share its message with all other nodes in its group via an intermediate half-duplex relay. The nodes of the whole network are equally distributed over the groups. In this paper, we propose a multicast interference alignment algorithm for a multi-group multi-way relay...
The fast development of wireless sensor networks has made a chance to accumulate and remove enormous measure of data from Wireless Sensor Networks. WSN is efficient instrument that empowers its clients to nearly screen, comprehend and control application handle. WSN consist of huge number of heterogeneous sensor hub spread over the extensive territory and help for wireless sensing and data processing...
Internet of Things (IoT) is a new network paradigm that allows the virtual presence of physical objects in our life. The main idea of IoT is origin from equipping daily life objects with embedded devices. Meanwhile, due to the low cost and high availability of sensor devices, wireless sensor networks (WSNs) have a great role in overspreading of IoT. This paper presents a new routing algorithm in order...
A novel framework to optimize the identification clustering of multipath scatterers in a MIMO wireless system is proposed. It is a comprehensive evaluation of major cluster identification methods across multiple categories of clustering methodologies. The reliability will be ensured with the use of a parameter selection framework utilizing the Bayesian Information Criterion (BIC). Statistical preprocessing...
With the advancement in sensing technology, applications are moving from wired to wireless region. The main challenge is the energy consumption of individual sensing nodes. When first node dies system becomes unstable and we cannot make use of the untapped node's energy. There comes the relevance of TSEP like protocols in such heterogeneous network. Heterogeneous in the sense with respect to node...
In this paper the entire area is divided into clusters. Each of the clusters has a set of nodes which are spread randomly across the clusters. Cluster Head Election algorithm LEACH elects a different cluster heading each round. LEACH routing algorithm is also simulated for sending the packets for inter cluster communication and intra cluster communication between source node and destination node....
Appropriate cluster head selection process in hierarchical cluster based routing algorithms is vital to make the wireless sensor networks energy efficient. This paper suggests a hybrid cluster head selection method with the parameters Location centrality and Nodes' lingering energy on the fixed clusters. The simulation outcome illustrates that the proposed algorithm is good at load balancing with...
Grouping of vehicles into clusters proves to be very rewarding for VANETs as if it reutilizes all the resources within group and thereby increases the system capacity. The main idealization of our work is to provide selection criteria for next available cluster head node (NACH). The various parameters for selection criteria are speed, position, acceleration, directional threshold point, threshold...
Information privacy for Wireless body area network (WBAN) includes the user's physiological parameters. When a user of WBAN system intends to query medical data, the security issue is involved. Ciphertext retrieval technology is an effective way to ensure this confidentiality. However, efficiency and accuracy for data retrieval are challenges under the consideration of the aggregation of medical data...
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