Abstract
The integration of wireless sensor networks within the Internet has been possible with the use of the IPv6 over low-power wireless personal area network standard at lower layers and Web services at higher layers. The operating constraints of wireless sensor networks and the implementation of traditional Internet protocols in these networks require an efficient adaptation of specialized low-power application protocols. Under this scope, this article presents the design, implementation, and evaluation of a secure, lightweight, and energy-efficient application protocol based on binary encoding and a RESTful approach to enable Web services in wireless sensor networks. The lightweight and secure protocol for wireless sensor network protocol has been designed to work over transmission control protocol, and it is recommended for applications where strong reliability constraints are imposed or in the configuration, reprogramming, or management of sensor nodes. Results show that lightweight and secure protocol for wireless sensor network is energy efficient regardless the use of legacy transmission control protocol as transport protocol, which brings the possibility of interoperability with existing systems, Internet protocols, and network infrastructure. We believe that lightweight and secure protocol for wireless sensor network will allow the expansion of the Internet of Things at a global scale.
Highlights
Wireless sensor networks (WSN) have become an integral part of ubiquitous computing, which provides the possibility of access to any service from anywhere, at any time, and from any device
We found transmission control protocol header compression (TCPHC),[22] which is used to compress TCP headers as it is done with user datagram protocol (UDP) which benefits constrained application protocol (CoAP)
Through the analysis of the .map file and the sections and symbols listed with msp430-size and mps430objdump -t utility, we found that the CoAP modules— er-coap-observe, er-coap-res-well-known-core, and ercoap-transactions—consume 10.87% of the 11.37% RAM footprint that LSPWSN achieves
Summary
Wireless sensor networks (WSN) have become an integral part of ubiquitous computing, which provides the possibility of access to any service from anywhere, at any time, and from any device. The 6LoWPAN standard introduces an adaptation layer between the IP stack’s data link and network layers that enables efficient transmission over 802.15.4 links of IPv6 datagrams, eliminating the need of specialized gateways.3 6LoWPAN led to a new paradigm known as Internet of Things (IoT), where smart objects connected to the Internet bring physical world data into the world of digital content and services.[4] seamless integration with IP, system scalability, and interoperability are the key objectives for IoT setups, the integration at higher layers requires the adaptation of traditional IPs to embrace millions of heterogeneousembedded devices designed and developed to satisfy particular needs Both heterogeneity and lack of integration require the use of a universal ‘‘language’’ to enable a seamless and scalable interworking and integration of such diverse technologies. Summarized conclusions and future work directions are provided in the section ‘‘Conclusion and future work.’’
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