Analysis Of Packets Delay In Wireless Data Networks (original) (raw)
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arXiv (Cornell University), 2022
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The sensor network is a collection of different sensor nodes. At a moments of information transfer in the sensor network. Data packets should be transmitted via different nodes to the sink node. Wireless sensor network have a Throughput, energy, Reliability, congestion and delay are the different quality of services or parameters. For the reliable data packets transmission in the network require reliability as well as less traffic or congestion in the network. To manage E to E delay or latency in the network requires control the transfer of data packet, path and traffic in the network. For reliable communication, packets will be sending from redundant path if there exists traffic problem. If in the network given huge amount of data packet to node then at that instance created many times traffic problem or congestion. so here improve all these problems. Delay problem solve the transmission problem. In this paper analyse & characterize the traffic and delay. This paper shows the better performance of routing protocols with comparisons & which protocol take a minimum delay with better Average Packet delivery Ratio(PDR) for reliable communication in wireless sensor network.
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IEEE 802.11 WLAN has become a necessity nowadays in wireless communication and is widely used in intracampus scenarios. The common traffic transmitted in WLANs are multimedia applications such as VoIP, video streaming etc. To manage this traffic efficiently, access point used in WLAN implement one of the scheduling mechanisms such as FIFO, PQ, FQ etc. that handle how packets of related traffic are buffered while waiting to be transmitted. In the present work, network analysis for scheduling mechanisms used at the link with AP is presented with respect to delay and delay variation in packet transmission. The work is intended to give helpful insight as how to use ns-simulation for network analysis. It demonstrates about ns2.35, WLAN infrastructure mode scenario, control and data packet transmission between nodes (wired and wireless), results and post execution analysis.
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Wireless technologies in the LAN environment are becoming increasingly important. The IEEE 802.11 standard is the most mature technology for wireless local area networks (WLANs). The performance of the medium access control (MAC) layer, which consists of distributed coordination function (DCF) and point coordination function (PCF), has been examined over the past years. We present an analytical model to compute the saturated throughput of 802.11 protocol in the absence of hidden stations and transmission errors. A throughput analysis is carried out in order to study the performance of 802.11 DCF. Using the analytical model, we develop a frame delay analysis under traffic conditions that correspond to the maximum load that the network can support in stable conditions. The behaviour of the exponential backoff algorithm used in 802.11 is also examined.
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Wireless Networked Control Systems (WNCS) are used to implement a control mechanism over a wireless network that is capable of carrying real-time traffic. This field has drawn enormous attention from current researchers because of its flexibility and robustness. However, designing efficient WNCS over Mobile Ad Hoc Networks (MANET) is still a challenging topic because of its less-predictable aspects, such as inconsistent delay, packet drop probability, and dynamic topology. This paper presents design guidelines for WNCS over MANET using the Network Simulator version 2, NS2 software. It investigates the impact of packet delay and packet drop under the AODV and DSR routing protocols. The simulation results have been compared to MATLAB results for validation.
Wireless computer network [1] that associates two or more devices using a wireless distribution method often using spread-spectrum or OFDM within a restricted area such as a campus or small building. The 802.11a is another PHY extension to the 802.11 standard. It operates at the frequency range of 5-GHz, it's unlicensed national infrastructure for information (UNII) band and it allows for data rates of 6–54 Mbps. The aim of this paper is to analysis the performance of IEEE 802.11 of throughput and packet delay by using two types of algorithms i.e., Constant contention window and Binary Exponential Back-off.
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Characterizing the network delay distribution is a fundamental step to properly compensate the delay of Networked Control Systems (NCSs). Due to the random backoff mechanism employed by Wireless Personal Area Network (WPAN) protocols, it is difficult to derive such a distribution. In this paper, the probability distribution of the delay for successfully received packets in WPANs is characterized. The analysis uses a moment generating function method based on an extended Markov chain model. The model considers the exponential backoff process with retry limits, acknowledgements, unsaturated traffic, and variable packet size, and gives an accurate explicit expression of the probability distribution of the network delay. The probability distribution of the delay is a function of the traffic load, number of nodes, and parameters of the communication protocol. Monte Carlo simulations validate the analysis for different network and protocol parameters. We show that the probability distribution of the delay is significantly different from existing network models used for NCS design. Furthermore, the parameters of the communication protocol result to be critical to stabilize control systems.