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abstract

This article presents a novel method providing reliable data links for low-power wireless personal area networks. The method implements a dynamic frame formation using hamming-codes. The formation process is made in an optimum way to obtain high throughput while questioning channel condition in the network. A cross-layer interaction is utilized to get noise resilient link layer operations. This interaction is achieved by querying the value of bit error rate from the physical layer. The method is adapted to be used in lowpower and low-rate wireless networks based on IEEE 802.15.4 protocol. Performance metrics are evaluated through extensive Monte Carlo simulations and its success is compared to IEEE 802.15.4 and IEEE 802.15.4g protocol outputs. The simulations are made over various communication types using high traffic loads. In all our experiments, the proposed method substantially increases communication throughput, reduces energy consumption, and increases network life-time.

6. Conclusions

WPANs are emerging technologies for short-range communications to be used in computer, industrial, and many control systems. Low-powered and low-rate WPAN communication is standardized by the IEEE 802.15 working group in 2003. The standard specifies the physical layer and link layer operations. It is commonly used in many applications. In 2012, the standard is improved as IEEE 802.15.4g. Although this newer version of the standard has many advantages over its predecessor, adaptation issues to mobile conditions are not discussed by its specifications. Since, mobile conditions cause physical parameters to be in changing values, physical from/to link layer interactions are essential to provide an optimum operation. In this paper, a comprehensive study of WPAN architecture for cross-layer cooperation has been conducted. The objectives of new low-power WPAN communication paradigms have been described. Also, the proposed protocol operations for this type of networks are explained in detail. Then, its performance over IEEE protocols is investigated for various environmental conditions. Link-layer performance of the proposed method is analysed for mobile conditions. This analysis is made by observing Monte Carlo (MC) simulations for the environments with various bit error rates. Performance results are compared with IEEE 802.15.4 and IEEE 802.15.4g which are commonly used protocols in low-rate and low-power wireless networks. Energy consumptions of battery powered LR-WPAN networks are analysed for each protocol and MC simulations are made to observe network life-time in a comparative way. Comparisons show that the proposed method provides low-cost, low-energy consumption, and high throughput.