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Cell breathing is a mechanism used in cellular networks since many years, which is now proposed for energy efficient purposes. By using this technique, it is possible to save energy during low traffic periods by switching unnecessary BSs off whereas the cell topology is re-adapted supported on some few BSs active. In this article, we analyze a multi-size approach which provide means for an enhanced...
This paper introduces and analyzes a novel mobile access coordinated wireless sensor network (MC-WSN) architecture. In conventional sensor networks with mobile access points (SENMA), the mobile access (MA) points traverse the network to collect information directly from individual sensors. While simplifying the routing process, a major limitation with SENMA is that data transmission is limited by...
Fixed and Mobile Convergence (FMC) is a key stake for operators in the perspective of 5G networks. This paper analyzes the expected role of optical networks for convergence and integration of fixed and mobile infrastructures.
Newly, with the emergence of demanding applications e.g. multimedia applciations and its rapid prevalence on a large scale area e.g. urban environment. Supporting the scalability as well as satisfying QoS of demanding applications represent one of the main properties in urban environments. However, supporting applications and services in a such complex, distributed, large and diverse environment as...
In this paper, we study the problem of efficient data recovery using the data mules approach, where a set of mobile sensors with advanced mobility capabilities re-acquire lost data by visiting the neighbors of failed sensors, thereby improving network resiliency. Our approach involves defining the optimal communication graph and mules' placements such that the overall traveling time and distance is...
When some wireless networks are formed only for a particular purpose, they are the Mobile Ad-hoc Networks (MANETs). They do not depend on any access point for communication; they self-organize, and change topology dynamically. A routing protocol is necessary to help a node discover the routes to other nodes of the network and enable its communication with them. Each routing protocol tends to find...
Mobile ad hoc network is a group of mobile nodes that dynamically forms a mobile network. Route discovery and path failure are the main problems occur in MANET due to mobility. With the help of Neighbor Coverage-Based Probabilistic Rebroadcast Protocol (NCPR) protocol, the existing system deals with the problem of route discovery. The NCPR protocol exploits neighbor coverage knowledge by finding additional...
With the rapid advancement of wireless technology and the exponential increase of wireless devices in the past decades, there are more consumer applications for MANETs (mobile ad hoc networks) in addition to the traditional military uses. A resilient and robust MANET is essential to high service quality for applications. The dynamically changing topologies of MANETs pose a huge challenge to normal...
In this paper we present Local Group Connected Dominating Set (LG-CDS) algorithm which can be used in conjunction with SMF protocol for multicasting in MANETs. LG-CDS performs distributed election of relays for connecting members of locally located groups using only two-hop neighborhood information. It is worth noting that the algorithm can be tuned to elect redundant relays to improve fault tolerance...
In this paper, we determine optimal topology update interval for fault tolerant k-edge connected topology update algorithm Local Tree-based Reliable Topology (LTRT) used in Mobile Ad-hoc Networks (MANETs). Topology update algorithms are periodically run on each participant node of MANET. This period called topology update interval (Δt), is chosen to be uniform. However, neither a high...
Paper describes a concentric circular wireless sensor network topology and sensor data retrieving strategy using a mobile sink. A quadcopter acts as a mobile sink. The strategy states how to improve network lifetime by reducing energy consumption of power constrained sensor nodes. It eliminates packet routing and optimizes packet retransmissions by reducing packet error, packet loss and packet collisions...
Mobile Ad Hoc Networks (MANETs) are one of the most important and unique applications that enable users to communicate without any fixed network infrastructure. The self-configuring capability of nodes makes it more useful among military applications and crisis management. Though MANETs are very powerful, they suffer from a serious problem known as Network Partitioning. When a Network connection between...
This paper addresses the task of community detection and proposes a local approach based on a distributed list building, where each vertex broadcasts basic information that only depends on its degree and that of its neighbours. A decentralised external process then unveils the community structure. The relevance of the proposed method is experimentally shown on both artificial and real data.
This paper presents an approximated, but accurate and fast to compute, mathematical framework for evaluating the capture probability and the number of sustainable communications in a mobile wireless network where spatial reuse enables the coexistence of multiple traffic flows. The proposed study focuses on a particular multi-packet approach, known as multi-packet communication, in which different...
Motivated by outdoor exploration applications, we propose a system framework of node movement to achieve dynamic localization in mobile and ad hoc networks (MANETs). We first classify the localization into four levels to improve the performance of the system. Subsequently, three types of structures of MANETs are proposed. Finally, the layered system framework is designed to achieve maximum area exploring...
To identifies the desired transmission range of each node in a cluster and power management based on mean transmission power within the context of wireless ad-hoc networks. By reducing the transmission range of the nodes, energy consumed by each node is decreased and topology is formed by sending messages between the nodes such as RTS and CTS. A new algorithm is formulated by deriving a mathematical...
It is a new challenge in robotics to enable robots with limited communication and sensing capabilities to accomplish complex group tasks. An emerging research is that a robot equipped with wireless network modules acts as a mobile router to bridge the communications of among the robot network. How to configure the robot network topology adaptively to fulfill both the task allocation and execution...
Security and Quality are the two major aspects in MANETs to be addressed. Many articles have addressed these aspects independently. Very few have concentrated on the trade off between security and quality of MANETs, but lost their performance. The proposed method WBTQ (Weightage Based Trusted QoS Protocol) focuses on both the issues in parallel, it is providing secure environment by evaluating each...
In this paper, an enhanced clustering algorithm is proposed for large scale and dense Wireless Mobile Sensor Network (WMSN) to reduce the energy consumption for each sensor node and to maximize the system life. Sensor nodes in WMSN run on non-rechargeable and non-replaceable batteries and it is deployed in harsh locations, where recharging or changing sensor node battery is generally impossible. So,...
Distributed caching in the radio access network (RAN) has been a common approach for improving QoE per- ceived by mobile users and reducing backhaul traffic load. In this paper, we focus on the problem of cooperative and online searching and routing for content objects cached according to their local popularity in small- cell networks (SCNs), considering practical issues of implementation complexity...
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