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The widespread availability of connectivity to the Internet allows to share large amount of information generated by the most heterogeneous, possibly mobile, sources. One scenario where this situation arises is given by smart cities, which are envisioned to generate and consume relevant information about their statuses to enhance the security and lifestyle of their citizens. In this context, a very...
Mobile ad hoc networks [MANET] are typically characterized by high mobility and frequent link failures that result in low throughput and high end-to-end delay. Present approaches to multipath routing make use of pre-computed routes determined during route discovery. All the paths are maintained by means of periodic update packets uncast along each path. In existing method best path is determined and...
Traditional methods for implementing highly resilient systems are costly; and their methods using specialized hardware and high-speed interconnects do not extend to cloud. We demonstrate an architecture that rethinks the traditional approach and uses cloud's agility to provision additional capability as failures occur. This architecture continues serving requests with the best possible response...
We propose an architecture and algorithms for maintaining end-to-end network connectivity for autonomous teams of robots. By adopting stochastic models of point-to-point wireless communication and computing robust solutions to the network routing problem, we ensure reliable connectivity during robot movement in complex environments. We fully integrate the solution to network routing with the choice...
A Service Level Agreement (SLA) is a contract between a Service Provider (SP) and a customer that typically includes the customer requirements that the SP guarantees, the fee paid to the SP if the requirements are satisfied, and the penalty incurred by the SP if they are violated. Since an important requirement is the customer's service availability, we focus on routing and admission control in optical...
The Temporally-Ordered Routing Algorithm (TORA) is a highly adaptive distributed routing algorithm used in Mobile Ad hoc Networks (MANET) that provides multiple loop-free routes to a destination. TORA is very dependent on the services provided by the Internet MANET Encapsulation Protocol (IMEP) to carry out its three main functions: route creation, route maintenance, and route erasure. In this paper,...
In case of high dynamic topology, reactive routing protocols provide quick convergence by faster route discoveries and route maintenance. Frequent broadcasts reduce routing efficiency in terms of broadcast cost; Bk, and expected time cost; E[t]. These costs are optimized using different mechanisms. So, we select three reactive routing protocols; Ad-hoc On-demand Distance Vector (AODV), Dynamic Source...
Building proper routing protocols for a Mobile Ad-hoc Network (MANET) is a critical challenge because (1) flooding route requests often results in broadcast storm (especially when nodes or connections increase) and (2) re-broadcasting route discovery packets to rebuild or repair a broken path (caused by node mobility) will consume more control packets. To solve such broadcast storm and path damage...
In hierarchical tree-based routing for service discovery in a MANET, all routes form a tree infrastructure. Therefore, the transmitted packets from a node may go up to the tree root and down to the leaf node. The routing overhead of the tree-based routing algorithm cannot be avoided if the packet forwarding is based on parent-child relationships, even the destination node may be located near the source...
Distributed Hash Tables (DHTs) provide the substrate to build scalable and efficient Peer-to-Peer (P2P) networks: distributed systems with the potential to handle massive amounts of data on a very large scale. However, traditional DHTs provide very poor support for range queries. In this article we present a search mechanism that efficiently supports range queries over a ring-like DHT structure using...
Frequent link failures are caused in mobile ad-hoc networks due to node's mobility and use of unreliable wireless channels for data transmission. Due to this, multipath routing protocols become an important research issue. In this paper, we propose and implement a node-disjoint multipath routing method based on AODV protocol. The main goal of the proposed method is to determine all available node-disjoint...
Smart grids are smart grids because they don't only transport electricity but also information that will become an active part of the electricity supply system. Smart grid evolution has, thus, a lot to gain through the exploitation of emerging Future Internet networking technologies for the efficient collection and management of the acquired information. The capabilities for interconnection of numerous...
Clustering methods allow fast connection and also better routing and topology management of mobile ad hoc networks (MANET). In MANET, the movement of the network nodes may quickly change the topology resulting in the increase of the overhead message in topology maintenance. A variety of approaches for MANET clustering has been developed by researchers which focus on different performance metrics....
The overall airline scheduling process involves hierarchical steps starting with the network design and ending with crew assignment. Aircraft routing is especially important with respect to timing and costs for an airline. In this contribution, we focus on aircraft routing where aircraft are assigned to flight legs further considering maintenance requirements. We developed and implemented algorithms...
Ad hoc on Demand Distance Vector Routing Protocol (AODV) is an on-demand routing protocol for mobile ad hoc network with low power consumption as well as low-bandwidth overhead. The routing table in AODV, however, maintains only one route to the specified node. Therefore, the source node needs to re-initiate route discovery process whenever route failure occurs which leads to increase in routing overhead...
Ad hoc On-demand Distance Vector (AODV) is a routing schema for delivering messages in a connected Mobile Ad hoc Network (MANET). Connectivity between any sources to destination pair in the network exists when they are in radio range of each other. Local Repair is an important issue in routing protocol which is needed for minimizing flooding and performance improvement. Routes can be locally repaired...
The mobile ad-hoc networks are constructed without any fixed infrastructure such as base station, tower, redirection switches and routers. Mobile ad-hoc networks are the temporary wireless networks. All the routing information are managed by the node itself. Because of the continuously changing environment of wireless ad-hoc networks and their dynamic topologies, static routing algorithms and other...
The paper is presented an approach of preventive maintenance that improves and enhances downside production efficiencies based on the non-stop maintenance. The approach focuses on reconfiguration and rerouting; besides, to prepare alternative configurations according to different reliability for each machine. In addition reliable probability of machines, there exist critical factors such as...
Nodes in VANETs move at high speed. This high mobility makes most conventional routing protocols incompatible with this type of network. A new class of geographic routings has emerged. Most of these routing protocols suppose that the nodes position is known in advance and that the nodes do not have time to move significantly between sending packets and receiving their acknowledgments. This assumption...
According to the topological feature of the power-line network, an improved On Demand Distance Vector (IPODV) routing is proposed to ensure an efficient data transmission. It is based on Ad hoc On-Demand Distance Vector (AODV) Routing which is a powerful routing protocol used in ad-hoc networks to deal with the fast changing logical topology. IPODV improves two modules of conventional AODV: neighbor...
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