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The for equipment system of the complex network of command system of special structure and function, respectively from unit layer, sub network layer and network layer extraction reliability evaluation parameters, based on sub network efficiency established perception subnet, accused of subnet and combat the reliability index of the network and maintenance network, and each sub network reliability...
Mobile Ad-hoc Network (MANET) is a collection of independent mobile nodes that communicate with each other by forming multi-hop radio network. Routing is the primary problem in MANET. There are some limitations due to mobility of nodes in MANET. Because of the active topology and decentralized structure of a network, sometimes nodes may break routes. Frequent link failure results in packet loss, increase...
Internet infrastructure is highly distributed among different private and public sector entities. Although networks using Transmission Control Protocol (TCP) are highly resistant to failures — especially when multiple paths from sender to receiver exist - they have the potential to fail if a concentration of high-capacity routes between a particular sender and receiver become unavailable. The geographic...
The application of nodal tensor method for solving the problem of routing in MPLS-TE network with additional directions of traffic transmission is proposed. An additional direction of traffic routing has been selected by the criterion of minimum time of packets delivery in order to ensure balanced load and reliability of a network.
Multiservice telecommunication network is studied under adaptive routing in accordance with LLR method and the influence of equipment faults on network performance at connection level is analyzed. The approach is formulated to calculate call blocking probability and evaluate mean increment of this probability caused by limited reliability of network elements. The applicability of proposed mathematical...
It is a tough job for operators to make perfectly accurate configuration of many network elements in large networks. Erroneous configurations may cause critical incidents in network, on which many ICT systems are running. It may also result in a security hole as well as system incidents. There has been much work on preventing erroneous configurations, but this has taken a lot of time to verify routing...
The traditional Ad Hoc routing protocols do not scale well in heterogeneous networks, since they have not been designed to exploit different communication capabilities of network nodes. Building a heterogeneous hierarchical structure is a promising approach to achieve higher scalability in heterogeneous Ad Hoc networks. In this paper, we propose a novel heterogonous routing protocol based on DSDV,...
A Midimew connected Mesh Network (MMN) is a MInimal DIstance MEsh with Wrap-around links network of multiple basic modules, in which the basic modules are 2D-mesh networks that are hierarchically interconnected for higher-level networks. In this paper, we present the architecture of the MMN, addressing of node, routing of message, and evaluate the static network performance of MMN, TESH, mesh, and...
Nowadays, the end-users have multitude of offers that make service prices decrease in using a network environment with multiple-operators and multiple-network. Consequently, the competition between network providers increases. The customer is today in a strong position with ability to select the best one among different competing providers. Besides similar pricing schemes, which are a useful decision...
Opportunistic routing is applied to wireless multi-hop network. It makes full use of the characteristic of wireless network, decreasing the retransmission of data packet, increasing the throughput. At present, opportunistic routing is based on the assumption that the node and link are completely reliable. This paper proposes a reliable opportunistic routing, which evaluates reliability of node using...
Considering Share Risk Link Group (SRLG) constraints , a algorithm called SRLG with Conditional Failure probability (SCFP) is proposed in order to provide differentiated services in WDM mesh network. SCFP can differentiate the requirement on service reliability based on analysis of Conditional Failure Probability (CFP). In this algorithm, the concept of CFP is provided from reliability probability...
One of the main problems facing routing protocol in wireless sensor networks is how to prolong the lifetime of the network, because the replacement of the embedded batteries is a very difficult process once these nodes have been deployed. In this paper, we propose a new centralized energy-efficient routing protocol called Sink-controlled Energy-efficient and Geographical Routing (SEGR), which concentrates...
Wireless Sensor Networks (WSN) are low power networks which have many small nodes. The nodes are low power sensors interconnected to each other to receive and transmit data from source to sink. By the transferring of data, the power of these nodes reduces and eventually the system dies. In this paper we introduce an efficient load sharing routing technique to increase the life time of all the nodes...
This paper evaluates the performance of IPv4 and IPv6 networks in the absence of link layer protection. Behavior of both the networks has been discussed and simulated in case of ideal scenario, low noise, medium noise, high noise and very high noise environment. Transmission behavior at each router is observed and computed to understand the comparative performance of IPv4 and IPv6 datagram's. Our...
We use wireless networks in various field. However, a link of realistic wireless sensor networks (WSNs) can be unreliable. Therefore, data forwarding with efficiency and reliability is a core issue. For solving previous geographic routing protocols, we proposed Protocol considering Both side of Link-quality and Energy (PBLE), an efficient and optimal routing protocol that uses modified link-quality,...
Industrial wireless mesh networks are deployed in harsh and noisy environments for process measurement and control applications. Compared with wireless community networks, they have more stringent requirements on communication reliability and real-time performance. Missing or delaying of the process data by the network may severely degrade the overall control performance. In this paper, we abstract...
In MANETs, flooding-based route discovery is usually preferred in order to set up the route with reliability between transmission pair. However, this approach may cause a serious contention in transmission between adjacent nodes and a considerable amount of control packets. In addition, most of ad hoc routing protocols establish the route with minimum hop count. Consequently, the performance of ad...
A new scheme that serves to find a routing path for Wireless Sensor Networks (WSNs), with a view to facilitate an increase in the network life time is proposed in this paper. It envisages the network to be in the form of clusters and develops an algorithm for transfer of information within the nodes and to the remote Base Station (BS). The approach involves the use of Ad-hoc On Demand Distance Vector...
Lifetime is the most important concern in wireless sensor networks due to limited battery power of sensor nodes. In this paper, we focus on designing an energy-efficient and energy-aware routing algorithm, LLR, to increase the operational lifetime of multi-hop wireless sensor networks in the presence of unreliable communication links. Our proposed protocol utilizes a parameter, Broadcasting Delay,...
Wireless sensor networks can be used to deploy various applications to reflect the circumstance of environment. Video sensors used in wireless multimedia sensor networks (WMSNs) enhance such applications with multimedia data, but with specific characteristics requirement for the network. The aim of this work is to provide reliable data transport with multipath routing and load balancing congestion...
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