A Battery-Assisted Passive EPC Gen-2 RFID Sensor Tag IC With Efficient Battery Power Management and RF Energy Harvesting

Duong, Vinh-Hao; Hiểu, Nguyễn Xuân; Lee, Hyun-Sik

doi:10.1109/tie.2016.2585463

Cited by 31 publications

(13 citation statements)

References 30 publications

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“…Here, the SIR threshold is set to 0 dB. 10 We set the reader's CW power for interfering link discovery at = 1 W. (This setting maximizes the interfering link discovery, although the general conclusions in this subsection hold for other settings of as well.) Then we investigate the impact of the reader's CW power for link discovery, , on the data throughput (i.e., the number of concurrent transmissions), when varies from 0.2 Watt to 1 Watt.…”

Section: A T2t Routing Protocol For Scenario a 1) Data Throughput Vs For Different Tag Densitymentioning

confidence: 99%

“…However, when is too high, the interference from multiple tags may add together to prevent a tag from receiving, although each interference by itself does not have enough power to take the link down. In fact, this is exactly why we introduced the two levels of CW power ( for interference discovery and for 10 Which would be the case, for example, when the tags use CDMA modulation ([77]). From Fig.…”

Section: A T2t Routing Protocol For Scenario a 1) Data Throughput Vs For Different Tag Densitymentioning

confidence: 99%

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On the Design of Multi-Hop Tag-to-Tag Routing Protocol for Large-Scale Networks of Passive Tags

Liu

Haas

Tian

2020

IEEE Open J. Commun. Soc.

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Recently, tag-to-tag (T2T) backscattering technique in a passive RFID system has received broad attention due to its superiority for large-scale network applications. If used to implement a Network of Tags, use of T2T communication allows inherent communication parallelism, thus supporting orders of magnitude larger capacity than centralized RFID reader-based systems. To unleash the potential of T2T communication, turbo backscattering operation enables the implementation of a multihop network of tags, which supports larger network coverage of a Network of Tags. However, due to asymmetric communication links and interferences among tags' transmissions in such a T2T backscattering based network, the routing protocol design has become one of the main technical challenges, especially for large-scale networks. Furthermore, the computation time of T2T routing protocols increases exponentially with the number of tags, greatly limiting the practicability of such large-scale backscattering networks. In this paper, we present the design of a Network of Tags model to address these challenges, and we propose novel routing protocols for three distinct types of tags with different hardware capabilities. To address the issue of computational processing time of the routing protocol for large-scale T2T networks, we propose a new scheme with linear time complexity. We evaluate and compare the performance of the proposed protocols, as well as investigate the impact of network parameters on the performance. Keywords-backscattering communications; Internet of Things; large-scale networks; multi-hop routing protocol; Network of Tags; RFID passive tag; tag-to-tag communication I. INTRODUCTIONOWADAYS, RFID systems have become increasingly prevalent, and it is predicted that in the future massively deployed IoT objects will be tagged for communication and control for various applications such as e-Health, Smart Cities, Smart Spaces, and Intelligent Transportation Systems. A typical RFID system, which consists of an RFID reader and a number of tags, has become one of the most widely used systems to facilitate automatic object identification ([1]). Each tag is uniquely differentiated through its identification code, which can be recognized by the reader. RFID tags fall mainly into three categories: active, passive, and semi-passive tags. As the names imply, passive tags are solely powered by RF radiation of a reader. A typical passive RFID link between a tag and the reader operates through an interrogation process: when a passive RFID tag receives an activation signal from the reader, the signal energizes the circuits of its RFID chip, and the tag responds to the reader by backscattering the received waveform signal from the reader. What differentiates passive tags from active tags is that passive tags have neither significant energy storage nor traditional transmitters. Thus, they have advantages such as lower cost, smaller dimensions, physical flexibility, longer lifetime, environmental safety, and no need for power sources ([2]).Direct ...

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Section: A T2t Routing Protocol For Scenario a 1) Data Throughput Vs For Different Tag Densitymentioning

confidence: 99%

Section: A T2t Routing Protocol For Scenario a 1) Data Throughput Vs For Different Tag Densitymentioning

confidence: 99%

On the Design of Multi-Hop Tag-to-Tag Routing Protocol for Large-Scale Networks of Passive Tags

Liu

Haas

Tian

2020

IEEE Open J. Commun. Soc.

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“…Semi-passive or battery-assisted passive (BAP) UHF RFID technology is one option to increase the read range of a passive UHF RFID system even further [22]. It forms a category of its own between the passive RFID technology and the active IoT radios.…”

Section: Challenges and Possibilities Of Uhf Rfid Technologymentioning

confidence: 99%

Exploitation of Transparent Conductive Oxides in the Implementation of a Window-Integrated Wireless Sensor Node

Jaakkola

Tappura

2018

IEEE Sensors J.

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“…Due to the limited energy available for the SWIPT system, an efficient energy utilization scheme is necessary considering the challenging scenarios of the SWIPT system [ 37 ]. RFID and SWIPT share the structural similarities such as RF energy harvesting and digital communication [ 38 , 39 , 40 ]. The source of energy harvesting for RFID is based on a dedicated RF transmitter/source, unlike the SWIPT, where the source of energy harvesting is mainly based on RF energy in the ambient environment.…”

Section: Introductionmentioning

confidence: 99%

A Design of Adaptive Control and Communication Protocol for SWIPT System in 180 nm CMOS Process for Sensor Applications

Rehman

Ali

Khan

et al. 2021

Sensors

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This paper presents an adaptive control and communication protocol (ACCP) for the ultra-low power simultaneous wireless information and power transfer (SWIPT) system for sensor applications. The SWIPT system-related operations depend on harvested radio frequency (RF) energy from the ambient environment. The necessary power for SWIPT system operation is not always available and it depends on the available RF energy in the ambient environment, transmitted RF power from the SWIPT transmitter, and the distance from the transmitter and channel conditions. Thus, an efficient control and communication protocol is required which can control the SWIPT system for sensor applications which mainly consists of a transmitter and a receiver. Multiple data frame structures are used to optimize the exchange of bits for the communication and control of the SWIPT system. Both SWIPT transmitter and receiver are capable of using multiple modulation schemes which can be switched depending on the channel condition and the available RF energy in the ambient environment. This provides support for automatic switching between the time switching scheme and power splitting scheme for the distribution of received RF power in the SWIPT receiver. It also adjusts the digital clock frequency at the SWIPT receiver according to the harvested power level to optimize the power consumption. The SWIPT receiver controller with ACCP is implemented in 180 nm CMOS technology. The RF frequency of the SWIPT operation is 5.8 GHz. Digital clock frequency at the SWIPT receiver can be adjusted between 32 kHz and 2 MHz which provides data rates from 8 to 500 kbps, respectively. The power consumption and area utilization are 12.3 µW and 0.81 mm².

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A Battery-Assisted Passive EPC Gen-2 RFID Sensor Tag IC With Efficient Battery Power Management and RF Energy Harvesting

Cited by 31 publications

References 30 publications

On the Design of Multi-Hop Tag-to-Tag Routing Protocol for Large-Scale Networks of Passive Tags

On the Design of Multi-Hop Tag-to-Tag Routing Protocol for Large-Scale Networks of Passive Tags

Exploitation of Transparent Conductive Oxides in the Implementation of a Window-Integrated Wireless Sensor Node

A Design of Adaptive Control and Communication Protocol for SWIPT System in 180 nm CMOS Process for Sensor Applications

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