Browsing by Author "Thanmayee, S."

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    Cyber-Physical Systems: Historical Evolution and Role in Future Autonomous Transportation
    (Springer Science and Business Media Deutschland GmbH, 2022) Rudra, B.; Thanmayee, S.
    The revolutionary research and experiments in the field of computing and communicating technologies have resulted in a dramatic impact on the applications with societal and economic benefit. With the evolution of the Internet, it is now possible to connect every object or thing in the physical world. These things can communicate and also perform computations. It is now possible for humans to communicate with the physical things around us. This leads us to explore a whole new technology called Cyber Physical System (CPS). CPS combines computation, communication and control technologies in order to integrate the existing networked systems and embedded systems. It has modules to perform accurate data acquisition. These modules are basically distributed devices. Further the acquired data is sent to a layer of information processing as per the service requirements. There are enormous applications of CPS namely: digital medical devices, autonomous vehicles, robotic systems, intelligent highways, aerospace systems, industry automation, building and environment control and physical process control. Among the listed applications, autonomous transportation is evolving through the ongoing research trends. In autonomous transportation systems, there is a high requirement for reliable communication between the communicating entities, accurate data acquisition and processing and high computing capabilities. Thus CPS is a novel engineering system that can suit the requirements of autonomous transportation. In this chapter we discuss the evolution of CPS and its role in future autonomous transportation. We explore the research challenges in the CPS based on autonomous transportation. © 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
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    New Bit Pattern Based IPv6 Address Compression Techniques for 6LoWPAN Header Compression
    (Institute of Electrical and Electronics Engineers Inc., 2022) Geetha, V.; Bhat, A.; Thanmayee, S.
    Things in the world can be connected to the Internet through various technologies such as Wi-Fi, Bluetooth, IEEE 802.15.4 etc. Among all IPv6 over IEEE 802.15.4 looks promising for outdoor environments for connecting a very large number of resource constrained sensor nodes. 6LoWPAN is an adaptation layer to support IPv6 over IEEE 802.15.4 to overcome the challenge of the physical layer with respect to the limitation of 127 bytes of payload. 6LoWPAN supports header compression as one of its functions to reduce the number of bits in header by using compression techniques. Static Context Header Compression (SCHC) provides RuleID based header compression. This paper proposes further compression of address bits based on compressing leading zeros in IPv6 addresses. The proposed work is analysed with respect to Header compression HC1 of 6LoWPAN and SCHC techniques. The simulation results show compression of address bits are 10% to 40% more compared to traditional address compression of the 6LoWPAN address compression when continuous zeroes are present in the address. The compression of address bits provides sufficient space for sending data payload in one frame during communication. © 2013 IEEE.