Reliability Evaluation of Communication Network Considering Capacity and Delay of Transmission Abstract This paper introduces a reliability index Capacity and Delay Related Reliability (CDRR) for communication networks. An algorithm is proposed for evaluating the CDRR. This algorithm needs the binary system states generated by the minimal paths, message flow capacity and time delay of these states. A criterion for computing the delay time of the binary system states is also proposed. In the paper, attempt has been made to justify that the index, CDRR will be an appropriate reliability index for evaluating the performance of communication networks. KeywordsConnectivity Performance-index CDRR Communication-network Flow-capacity Time-delay I. INTRODUCTION Communication network is an example of flow networks where the flow is the message transported through the network consisting of nodes acting as switching stations and edges as communication links. Disruption of the communication network depends upon the link failure as well as the non-fulfillment of constraints of performance by the system. There are several performance indexes of flow networks already defined [1-5]. Most of these consider the effect of link capacity only in evaluating the performance index. This index has been described in literature as Capacity Related Reliability (CRR). In performance evaluation of communication networks transportation of links has also been considered [6-9]. But the operating environment of communication networks is such that the performance of the network is affected by the constraints of both capacity and transportation time. There is a need of integrating both these in reliability index. Here one such reliability is being propo... ... middle of paper ... .... 37, pp. 6569,Apr. 1988. [8] R. Schanzer, "Comment on: reliability modeling and performance of variable link-capacity networks," IEEE Trans. Rel., vol. 44, pp. 620621, Dec. 1995. [9] K. Kyandoghere, "A note on: reliability modeling & performance of variable link capacity networks," IEEE Trans. Rel., vol. 47, pp. 4448, Mar. 1998. [10] Rajiv Kumar, Krishna Gopal and G. L. Pahuja, "A discussion on the method used for capacity calculation in finding the performance index of flow networks" pp.544 - 547 Proceedings of National Conference SECTAS- 2002, DEI Dayalbag Agra [11] S. M. Lee, C. H.Lee and D. H. Park, "Sequential capacity determination of subnetworks I network performance analysis," IEEE Trans. Rel., vol.53, pp. 481 486.December 2004 [12] J. A. Abraham, "An improved algorithm for network reliability" IEEE Trans. Rel., vol.28, pp.58-61, April 1979.
McGee, A. R., Vasireddy, S. R., & Xie, C. (2004). A Framework for Ensuring Network
The second layer of the OSI model is the data link layer. This is the layer that transports the data between network nodes in a wide area network (WAN) or on the same local area network (LAN) between nodes. The data link layer makes available the procedural and functional means to move data between network devices and could provide the measures to find and possibly correct errors that may occur in the physical layer. The security vulnerabi...
3COM offers a wide variety of networking solutions. From Switches to Hubs to Gateways, 3COM is one of the frontrunners in the networking industry. In this comparison of Fast Ethernet Networks and Gigabit Ethernet Networks, before discussing the similarities with the various components and their respective operations, we must discuss the differences between the two.
Ash, J. D. (2007, December). Next generation SDH: Does it have a role in future packet-based wireline networks? Journal of Telecommunications Management, 1(2), 189.
Troubleshooting media problems on a bus networks can be very tedious, since a break in the backbone will bring down the entire LAN. For this reason, bus topology is not considered one of the more robust network topologies, compared with star or mesh. A loose or missing terminating resistor can also bring down a LAN.
Next, the writer goes over the second type of network architecture - the TCP/IP reference model, the granddaddy of the wide area computer network. This architecture allows the connection of multiple networks seamlessly. The architecture is flexible and capable of running even if some of the subnet hardware is destroyed or non-functional as long as the source and destination machines are functioning. In a similar fashion to the OSI model, the TCP/IP model has layers as well. In this case, we have four layers: the link
4. A. Crespo and H. Garcia-Molina. Routing indices for peer-to-peer systems. In Proc. of the 28th International Conference on Distributed Computing Systems, July 2002.
Sensor-based networks basically are characterized by their continuous mode of operation and power sources, which increases the fault rates in sensors, knowing that maintenance or replacement of sensors is considered expensive.
The Key activity of this paper is to avoid the data loss in the network and also providing...
In communication networks, research was performed on Fiber Optics Local Area Networks such as Fastnet, Expressnet, D-Net, U-Net and Token Ring as they are key networks for factory automation. This leads to interest in modelling and testing of High Speed Networks, which is paramount for the successful development of multimedia systems.
Hollows, P 2002, 'Essentials of a smooth-running network', Communications News, vol. 39, no. 7, p. 16.
Despite its simplicity and reliability the bus network does have several limitations. The cable length of the bus is limited due to data loss. Also, a bus network may have performance issues if the nodes are located a...
In Network Management, there are three main aspects that must considered which is Security, Performance and Reliability. Security is on how to ensuring the network protected from unauthorized users, Performance is on how to eliminating bottleneck in the network and Reliability is to make sure the network is available to users and responding to hardware and software malfunctions. Based on my mini project requirement, I have to analyze the network based on Performance Management.
Computers in technological development demand more efficient networking. In a very short period it has changed the way we have looked at things since centuries. It is one industry that is going to shape our future for centuries to come Coming from a background of Electronics and Communication Engineering, I have developed an interest to probe into the area of Networking and Computer Networks. Hence I wish to do Masters in Computer Science (CS) as my major.
Assigning the precise amount of network capacity in the right place at the right time is no simple task. Network Planners cannot afford to overbuild, as this would consume scarce investment resources that could be better used elsewhere. They also cannot delay expansion as this may result in poor service to customers and under-utilize other network assets. A balanced approach is needed in order to meet the rapidly growing and changing traffic demands. Advanced network planning and design software provides benefit to network planners in the following ways: