Time-Reversal Wireless Paradigm for Green Internet of Things: An Overview

Abstract

Abstract-In this paper, we present an overview of the timereversal (TR) wireless paradigm for green Internet of Things (IoT). It is shown that the TR technique is a promising technique that focuses signal waves in both time and space domains. The unique asymmetric architecture significantly reduces the cost of the terminal devices, the total number of which is expected to be very large for IoT. The focusing effect of the TR technique can harvest the energy of all the multi-paths at the receiver, which improves the energy efficiency of the wireless transmission and thus the battery life of terminal devices in IoT. Facilitated by the high-resolution spatial focusing, the TR division multiple access scheme leverages the uniqueness of the multi-path profiles in the rich-scattering environment and maps them into location-specific signatures, so that spatial multiplexing can be achieved for multiple users operating on the same spectrum. In addition, the TR system can easily support heterogeneous terminal devices by providing various quality-of-service (QoS) options through adjusting the waveform and rate backoff factor. Finally, the unique location-specific signature in TR system can provide additional physical-layer security and thus can enhance the privacy and security of customers in IoT. All the advantages show that the TR technique is a promising paradigm for IoT.Index Terms-Internet of Things (IoT), spatial focusing, temporal focusing, time reversal (TR), time-reversal division multiple access (TRDMA).

The Internet of Things: a security point of view

“…More specifically, the IETF has standardized 6LoWPAN (IPv6 over Low-Power Wireless Personal Area Networks), ROLL (routing over lowpower and lossy-networks), and CoAP (constrained application protocol) to equip constrained devices (Cai et al 2014;Chen et al 2014;Esad-Djou 2014;Gu et al 2014;Hoyland et al 2014;HP Company 2014;Kang et al 2014;Keoh et al 2014;Li and Xiong 2013;Li et al 2014a;Oppliger 2011;Raza et al 2013;Roe 2014;Tan et al 2014;Wang and Wu 2010;Xiao et al 2014;Xu et al 2014a;Xu et al 2014b;Yao et al (WPA2) or 802.1AE (MACsec). In recent, the security standards for the RFID market have been reported in (Raza et al 2012).…”

Green Industrial Automation Based On IOT: A Survey

“…millions of distinct Secure Deterministic Virtual Networks in layer 2 has been presented has been embedded by The design of a Secure Deterministic Industrial IOT core network .today's BE-IoT did not secure deterministic Industrial-Tactile Internet of Things core network can enable Big Data green cloud computing with exascale performance levels within a decade. In [15] In this paper, we provide an overview to show that the TR technique is an ideal paradigm for IoT. , the TR system has a potential of over an order of magnitude of reduction in power consumption and interference alleviation, which means that TR system can provide better battery life and support multiple concurrent active users Because of the inherent nature to fully harvest energy from the surrounding environment by exploiting the multipath propagation to recollect all the signal energy.…”

Multi-Objective Optimization of Wireless Information and Power Transfer in Multiuser OFDMA Systems

“…For each gene-group in a child-chromosome, e.g., w [p] w,l,n ∈ W [p] w,l , we set a mutation probability ϕ [m] w,l,n to determine whether the genes require an irregular/tremendous change. 1 The mutation probability is generally set much lower than the evolution probability. We denote the set of the updated child-chromosomes after mutation as Ω W,N }.…”

“…Meanwhile, since most of the devices (handheld devices, sensor nodes, etc.) in these networks are battery-powered, the demand of a higher battery capacity has also increased [1], [2]. The increase in battery capacity, however, fails to meet the ever-increasing energy demand [3].…”