Mobile Harbor is a movable floating structure with container loading/unloading equipment on board. Mobile Harbor is equivalent to a berth with a quay crane in a conventional port, except that it works with a container...
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In recent years, wireless networks have been widely adopted in industrial applications such as monitoring and control because of their flexibility and low cost. However, wireless networks use shared medium which requi...
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In recent years, wireless networks have been widely adopted in industrial applications such as monitoring and control because of their flexibility and low cost. However, wireless networks use shared medium which require appropriate Media Access Control (MAC) protocols to manage the shared medium. Time Division Multiple Access (TDMA)-based MAC protocols, which are collision free are predominantly used in industrial networks. To achieve the stringent requirements of reliability and timeliness in industrial applications, proper scheduling of the nodes accessing the shared channel is essential. A number of TDMA scheduling algorithms have been proposed in the literature but there is no study that have analyzed and compared the algorithms to help designers of new algorithms with basic information of the existing algorithms. The objective of this study is to provide basic findings that should be used by researchers looking for TDMA scheduling algorithms for industrial applications. To achieve the objectives of this article various categories of the TDMA scheduling algorithms that have been implemented in various industrial networks mostly Industrial Wireless Sensor Network (IWSN) which is widely deployed have been presented. Comparison of the various categories of the scheduling algorithms using reliability and delay as performance metrics which are crucial in industrial applications have been done. It was noted that hybrid TDMA scheduling algorithms have improved performance compared to distributed and centralized algorithms in random networks. Designing and testing of hybrid TDMA scheduling algorithms in the emerging industrial wireless networks such as LoRaWAN are recommended future work.
Wireless mesh network (WMN) is emerging as an important networking architecture for future wireless communications. The mesh mode supported in IEEE 802.16 protocol provides a TDMA solution for WMN, in which scheduling...
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Providing quality of service (QoS) in wireless communication networks has become an important consideration for supporting variety of applications. IEEE 802.16 based WiMAX is the most promising technology for broadban...
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This is the age of information. Now-a-days everyone communicates with each other by means of digital systems. Humans are always communicating with each other on the go. On-demand broadcasting is an efficient way to br...
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This is the age of information. Now-a-days everyone communicates with each other by means of digital systems. Humans are always communicating with each other on the go. On-demand broadcasting is an efficient way to broadcast information according to user requests. In an on-demand broadcasting network, anyone can satisfy multiple clients in one broadcast which helps to fulfill the enormous demand of information by clients. The optimized flow of digital data in a network through the transmission of digital evidence about messages is called network coding. The "digital evidence" is composed of two or more messages. Network coding incorporated with data scheduling algorithms can further improve the performance of on-demand broadcasting networks. Using network coding, anyone can broadcast multiple data items using single broadcast strategy which can satisfy the needs of more clients. In this work, it is described that network coding cannot always maintain its superiority over non-network coding when the system handles different sized data items. However, the causes of performance reduction on network coding have been analyzed and THETA based dynamic threshold value integration strategy has been proposed through which the network coding can overcome its limitation for handling heterogeneous data items. In the proposed strategy, THETA based dynamic threshold will control which data item will be selected from the Client Relationship graph (CR-graph) so that large sized data items cannot be encoded with small sized data items. Simulation result shows some interesting performance comparison.
An optical overlaid star network is a class of agile all-photonic networks that consists of one or more core node(s) at the center of the star network and a number of edge nodes around the core node. In this architect...
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Moving is the key to modern life. Most things are in moving such as vehicles and user mobiles, so the need for high-speed wireless networks to serve the high demand of the wireless application becomes essential for an...
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In multiprogramming computer systems, the scheduling strategy used to select tasks to be activated is an important factor in the achievement of the performance goals of the system. One form of analysm of scheduling al...
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Recent advances in wireless technologies open up new avenues toward many newer applications;however, existing wireless networks are not efficient enough to satisfy some new applications' requirements such as low e...
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Recent advances in wireless technologies open up new avenues toward many newer applications;however, existing wireless networks are not efficient enough to satisfy some new applications' requirements such as low energy consumption, high throughput, and low end-to-end delay. scheduling algorithms are promising for performance improvement by addressing the limitations of standard networking protocols. Due to the widespread deployments and applications of wireless networks, a significant number of scheduling algorithms has been proposed to improve network performance. In this paper, we provide a systematic comparison among proposed scheduling algorithm with an exhaustive, network-independent framework to ease the comparison among different scheduler design and highlight important challenges in the term of algorithmic parameters, computational order, accuracy, and overhead. We also study a set of schedulers in two main categories: low-power, and high-throughput, concerning our framework to extract the weakness and strength of each proposed method compared to other scheduling algorithms.
The main aim of long term evolution is to provide very high rate for downlink and uplink, better multimedia services and more user flexibility than the current cellular networks. There is a very important role of reso...
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