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An intelligent hybrid MAC protocol for a sensor-based personalized healthcare system

Digital Communications and Networks 2022年第2期8卷 174-185页

作者： Linbo Deng Jinsong Gui Tian Wang Jiawei Tan Xiong Li School of Computer Science and Engineering Central South UniversityChangSha410083China College of Computer Science and Technology Huaqiao UniversityXiamen361021China Institute for Cyber Security School of Computer Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu611731China

sensors based on personalized healthcare systems have been widely used in the medical ***,energy limitations have greatly hindered the further development of medical *** the traditional Medium Access Control(MAC)protocol,the duration of low-power listening is fixed because it ignores that the available energy of sensors is different in some situations,which leads to a high delay and low energy *** this paper,a Maximum Listening Length MAC(MLL-MAC)protocol is proposed to fully utilize the energy in the sensor-based *** MLL-MAC protocol is an improvement of the Receiver-Initiated(RI)MAC *** main advance is that the sensor node performs the following additional operations:(1)The sender sends a beacon when it wakes up and sends data,thus establishing a communication link with the receiver in the listening state;(2)The receiver keeps listening as long as possible to reduce the delay when it wakes up and listens to the channel,which is different from the previous strategy in which the node turns into a sleep state immediately without receiving ***,the sensor node can dynamically determine whether to send beacons and prolong listening duration according to its available energy *** MLL-MAC protocol is evaluated through theoretical analysis and experimental *** results show that,compared with the RI-MAC protocol,the MLL-MAC protocol can reduce the average end-to-end delay by 41.4%and improve the energy utilization by 15.1%.

关键词： sensor based system Delay Energy consumption Network lifetime Adaptive listening length

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AQND: An asymmetric quorum-based neighbor discovery protocol for reducing delay in sensor based systems

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INFORMATION SCIENCES 2024年 654卷

作者： Xia, Ziqing Gao, Zhangyang Liu, Anfeng Xiong, Neal N. Cent South Univ Sch Elect Informat Changsha 410083 Peoples R China Cent South Univ Sch Comp Sci & Engn Changsha 410083 Peoples R China Sul Ross State Univ Dept Comp Sci & Math Alpine TX 79830 USA

Neighbor discovery is basic for Wireless sensor Networks (WSNs) communication, which is the key to network performance. Since sensor nodes were powered by battery, sleep/active rotation was widely adopted to save energy, which led to the neighbor discovery problem. Many timely neighbor discovery protocols are proposed for wake-up scheduling to expedite the discovery and data routing while saving energy. In this paper, an asymmetric quorum-based neighbor discovery (AQND) protocol is proposed to reduce the delay of neighbor discovery and data routing while improving the energy utilization and maintaining a high lifetime. According to our theoretical analysis, the proposed AQND protocol outperforms previous strategies in main performance indicators such as reducing the average relative error of duty cycle, the maximum neighbor discovery delay and the end-to-end discovery delay while improving the energy utilization ratio. In addition, using the proposed AQND protocol to improve the above network performances doesn't reduce lifetime. Maintaining the end-to-end delay consistent with the previous strategies, the lifetime of network can be improved.

关键词： sensor based system Duty cycle Delay Quorum Energy efficient

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LIAA: A listen interval adaptive adjustment scheme for green communication in event-sparse IoT systems

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INFORMATION SCIENCES 2022年 584卷 235-268页

作者： Wang, Han Liu, Wei Xiong, Neal N. Zhang, Shaobo Wang, Tian Cent South Univ Sch Comp Sci & Engn Changsha Hunan Peoples R China Hunan Univ Chinese Med Sch Informat Changsha 410208 Peoples R China Sul Ross State Univ Dept Comp Sci & Math Alpine TX 79830 USA Hunan Univ Sci & Technol Sch Comp Sci & Engn Xiangtan Hunan Peoples R China Beijing Normal Univ Artificial Intelligence & Future Networks Zhuhai Guangdong Peoples R China UIC Zhuhai Guangdong Peoples R China

Due to the development of microprocessor technology, there are more than 20 billion sensor-based devices connected to the Internet of Things (IoT) to monitor physical phe-nomena and events. To reduce the energy used by idle listening, a low-duty cycle is often used in an event-sparse wireless sensor network. However, low-duty cycles bring large end-to-end delays. In this paper, a listen interval adaptive adjustment (LIAA) scheme is proposed to adjust the listen interval (LI) of a node to reduce end-to-end delays while maintaining the long lifetime of a network. The key idea is to make full use of the energy consumption imbalance in a network, to allow nodes away from the sink to use the resid-ual energy to add listen intervals. The LIAA scheme has 3 sub-strategies. One is the basic add listen interval (BALI) strategy, in which the parent node adds listen intervals in the fixed active slots of its child nodes. Another strategy is the consecutive listen (CL) scheme, which is based on BALI, and listen intervals are added consecutively. The third strategy is the random add listen interval (RALI) scheme, which uses the idea of randomness to add listen intervals. The extensive theoretical analysis and experimental results show that the LIAA scheme proposed in this paper has better performance. Compared with the tradi-tional scheme, the delays in the BALI scheme, CL scheme and RALI scheme were reduced by 24.03%, 23.45% and 39.41%, respectively, while the lifetime of the network was maintained. (c) 2021 Elsevier Inc. All rights reserved.

关键词： sensor based system Duty cycle Delay Energy saving Lifetime Listen interval adaptive adjustment

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ShonaBondhu: A Cloud based system to Handle Flash Flood

ShonaBondhu: A Cloud Based System to Handle Flash Flood

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International Conference on Networking systems and Security (NSysS)

作者： Ahmed, Nova Azad, A. K. Khan, Mahmudur Rahman Habib, Ahsan Ghosh, Shuvashish Shahid, Sabiha North South Univ ECE Dept Elect & Comp Engn Dhaka Bangladesh North South Univ ECE Dept Environm Sci & Management Dhaka Bangladesh

ISBN: (纸本)9781509002030

Flash Flood is a natural disaster that floods away large area where there are dense presence of rivers. Bangladesh is one such country where people face this sudden flood problem and loses valuable assets using manual water level monitoring. The challenge lies in the sudden increase of water level once the flood water is in. We are proposing a distributed system using water level monitoring sensors named Shonabondhu. The sensing nodes are distributed all across the country and the servers that collect data from sensors are spread around various regions. The servers use a function of rainfall and current water level that indicate a particular gradient to that sensor. The gradient information among sensors are related using the water level and rainfall data over four years (2008 to 2011). This gradient information is updated and propagated when any kind of change is present near the source of the river. A communication abstraction is created to propagate sensitive information and periodic updates of current status. We have used actual sensors to monitor the water level in the river and have used emulated sensors to mimic the behavior in large distributed system. Our current system works as a proof of a concept system before the actual deployment of this system in collaboration of Water Development Board of Bangladesh.

关键词： Flash Flood Middleware sensor based system Solution for Natural Disaster in Bangladesh

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Shonabondhu: A Sensing Middleware to Handle Flash Flood 13

Shonabondhu: A Sensing Middleware to Handle Flash Flood

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13th ACM Conference on Embedded Networked sensor systems (SenSys)

作者： Ahmed, Nova Khan, Mahmudur Rahman Syrus, Minhaz Ahmed North South Univ ECE Dhaka Bangladesh

We present a distributed custom developed low cost sensing middleware named Shonabondhu that is able to handle flash flood in developing countries like Bangladesh.

ISBN: (纸本)9781450336314

We present a distributed custom developed low cost sensing middleware named Shonabondhu that is able to handle flash flood in developing countries like Bangladesh.

关键词： Flash Flood Middleware sensor based system Distributed sensor Middleware Solution for Natural Disaster in Bangladesh

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Poster: A Low Cost Cloud based system to Handle Flash Flood 14

Poster: A Low Cost Cloud Based System to Handle Flash Flood

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14th Annual International Conference on Mobile systems, Applications, and Services (MobiSys)

作者： Ghosh, Shuvashis Hassan, Rifat Ahmed Galib, Sian Iftekher North South Univ Dhaka Bangladesh

ISBN: (纸本)9781450344166

Flash Flood is a natural disaster that floods away large area where there are dense presences of rivers. Bangladesh is one such country that faces it. The challenge lies in the sudden increase of water level once the flood water is in. We are proposing a distributed system using water level monitoring sensors named Shonabondhu. The sensing nodes are distributed all across the country and the servers that collect data from sensors are spread around various regions. We have designed implemented and deployed actual sensors to monitor the water level in the river our current system works as a proof of a concept system before the actual deployment of this system in collaboration of Water Development Board of Bangladesh.

关键词： flood solution for natural disaster in bangladesh middleware sensor based system

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Poster: Shonabondhu: A Sensing Middleware to Handle Flash Flood 15

Poster: Shonabondhu: A Sensing Middleware to Handle Flash Fl...

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Proceedings of the 13th ACM Conference on Embedded Networked sensor systems

作者： Nova Ahmed Mahmudur Rahman Khan Minhaz Ahmed Syrus North South University Dhaka Bangladesh North South University Dhaka Barbados

We present a distributed custom developed low cost sensing middleware named Shonabondhu that is able to handle flash flood in developing countries like Bangladesh.

ISBN: (纸本)9781450336314

We present a distributed custom developed low cost sensing middleware named Shonabondhu that is able to handle flash flood in developing countries like Bangladesh.

关键词： flash flood sensor based system distributed sensor middleware middleware solution for natural disaster in Bangladesh

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Automated Railway Maintenance system in Context of Bangladesh

Automated Railway Maintenance System in Context of Banglades...

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International Conference on Advances in Science, Engineering and Robotics Technology

作者： Nusrat Kabir Samia Rifah Tamanna Usha Anindita Kundu Sadia Nowshin Sharmin Sultana Sharmee Sanjida Nasreen Tumpa Major Md Fazle Rabbi Col Md Mahboob Karim Department of Computer Science and Engineering Military Institute of Science and Technology

ISBN: (纸本)9781728134468

Bangladesh railway system mostly relies on manual maintenance system. At present, a trolley car is used in which people go in person to examine the railway system depending only on their vision. Mostly, these checking include detection of rail line cracks and obstacles, existence of sleepers in the proper places etc. However, the inadequacy of this kind of maintenance system is one of the vital reasons of railway accidents. The current procedure is also time consuming and costly. Besides, one of the leading causes of railway accidents is attributed to human error which can be reduced through automation. This paper attempts to improve the railway maintenance system and convert this into an automated one. Here, we are introducing a sensor based arrangement which reveals problems like surface crack, unaligned rail lines, obstacles on the railway and also inspects the correct position, presence and absence of the sleepers with the convenience of sending the location and distance to the proper authority.

关键词： Automation Bangladesh railway Obstacle detection Railway maintenance sensor based system Obstacle detection Railway Maintenance Automation railway accidents railway system sleepers Bangladesh Persons Railway lines SURFACE CRACKS

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