scholarly journals A Comprehensive Study of Bluetooth Low Energy

2021 ◽  
Vol 2093 (1) ◽  
pp. 012021
Author(s):  
Chendong Liu ◽  
Yilin Zhang ◽  
Huanyu Zhou
Keyword(s):  
Power Consumption ◽  
Wearable Devices ◽  
Low Energy ◽  
Wireless Transmission ◽  
Power Devices ◽  
Paper Briefly ◽  
Huge Number ◽  
Bluetooth Low Energy ◽  
Communication Equipment ◽  
Comprehensive Study

Abstract Bluetooth Low Energy (BLE) is an innovative technique that was firstly employed in Bluetooth 4.0 and is being applied in the Bluetooth 5.0 and 5.2 technologies. Bluetooth 5.0 and 5.2 technologies are now widely used in all kinds of electronic communication equipment (e.g., PCs, tablets, smartphones, wearable devices). BLE has the capacity to minimize the power consumption and equipment cost in the low-power devices, which becomes a competitive scheme among the huge number of standard wireless transmission techniques already existing in everyday life for a large number of applications. As one of the available solutions in wireless transmission, Bluetooth technology equipped with the BLE module is very suitable for developing internet of things (IoTs) technology, which is gaining more and more interest. This paper briefly introduces the modulation and encoding of the BLE standard in the physical layer (PHY). The applications of cyclic redundancy check (CRC) in BLE are then presented. Moreover, the main characteristics, including the maximum reachable range, transmission latency, and power consumption of BLE, are also introduced.

A Method of Indoor Localization Based on BLE4.0 Protocol of Using Beacons

2015 ◽  
Vol 740 ◽  
pp. 765-768
Author(s):  
He Shan Bian ◽  
Zhao Hui Li ◽  
Fang Zhao
Keyword(s):  
Kalman Filter ◽  
Power Consumption ◽  
Indoor Localization ◽  
Signal Strength ◽  
Mobile Terminal ◽  
High Accuracy ◽  
Low Energy ◽  
Energy Technology ◽  
Bluetooth Low Energy ◽  
Distance Model

In this paper we discuss our attempt to solve the problem of HAIP(High Accuracy Indoor Position) by using BLE4.0(Bluetooth Low Energy). According to previous research, Wi-Fi Positioning has mainly faced some big challenges. Accuracy is deteriorated by directional handset antennas, which affect the relative AP signal strength; Practical maximum reachable accuracy is 3-10 meters depending on environment; Wi-Fi activities is a big consumption of battery on Mobile Terminal; Now, The Bluetooth Low Energy technology is getting mature. In this paper, we use Bluetooth low energy on iOS device to solve the problem of high accuracy indoor position. In the data-preprocessing step, we use Kalman filter to process the RSSI. In the transition step of RSSI to Distance, we propose a novelty method to adjust the parameters of Log-Distance model dynamically and adaptively according to diagonal beacons’ measurement. We implement our technique and algorithm on iOS device with iOS7.0 SDK. The result shows that error reduced to 0.5m-1.2m range depending on the distance, achieved smaller power consumption.

scholarly journals Analysis of BLE on Sensor Tag

2021 ◽  
Vol 9 (VI) ◽  
pp. 5183-5187
Author(s):  
Sudhanshu Gupta
Keyword(s):  
Wearable Devices ◽  
Low Energy ◽  
Home Automation ◽  
Bluetooth Low Energy ◽  
Pros And Cons

Bluetooth Low Energy (BLE) has become the word in field of IOT. With upcoming field of Wearable Devices and Home Automation, BLE has become the latest technology in implementation of IOT. Inside this paper, we will be comparing BLE with traditional BLUETOOTH, discussing Pros and Cons, and what are applications for which we should select BLE over Traditional BLUETOOTH, we will be discussing about BLE Profiles on TI CC-2650 SensorTag.

scholarly journals Optimum Layout of Low Power LC-Based Digitally Controlled Oscillator for Bluetooth Low Energy in a 4G/5G LTE System

2021 ◽  
Vol 11 (3) ◽  
pp. 1059
Author(s):  
Min-Su Kim ◽  
Sang-Sun Yoo
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Phase Noise ◽  
Supply Voltage ◽  
Low Energy ◽  
Superior Performance ◽  
Bluetooth Low Energy ◽  
Digitally Controlled ◽  
Digitally Controlled Oscillator ◽  
Low Phase Noise

This paper presents an optimum layout method of a low-power, digitally controlled oscillator (DCO) for a Bluetooth low-energy (BLE) transceiver in a 4G/5G LTE system. For the optimal LC-based DCO layout, three different layouts, including different gm cell locations and an Al metal layer, were implemented, and performance was compared and verified for BLE application. The implemented neck DCO (NDCO), where the gm cell is located in the neck of the main inductor, showed superior performance compared to other layouts in terms of low phase noise and low power consumption. The designed NDCO had a low phase noise of −116.1 dBc/Hz at 1 MHz with a 0.5 mW power consumption. The supply voltage and oscillation frequency range were 0.8 V and 4.7–5.7 GHz, respectively, and the NDCO designed with the optimal layout had a good figure-of-merit of −192.6 dBc/Hz.

Exploring Non-Idealities in Real Device Implementations of Bluetooth Mesh

2020 ◽  
Vol 12 (4) ◽  
pp. 52-64
Author(s):  
Paul Gavrikov ◽  
Matthias Lai ◽  
Thomas Michael Wendt
Keyword(s):  
Power Consumption ◽  
Transmission Rate ◽  
Average Power ◽  
Low Energy ◽  
Bluetooth Low Energy ◽  
Average Power Consumption ◽  
The Ideal

This work compares the performance of Bluetooth Mesh implementations on real chipsets against the ideal implementation of the specification. Measurements are taken in experimental settings and reveal non-idealities in the underlying Bluetooth Low Energy specification in real chipsets and in the implementation of Mesh, which introduces an unruly transmission as well as reception behavior. These effects lead to an impact on transmission rate, reception rate, latency, as well as a more significant impact on the average power consumption.

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