Internet of Things Adaptive data rate Blind ADR Hybrid ADR LoRa and loRaWAN Resource allocation 1. Introduction LoRa defines the physical layer features, employing chirp spread spectrum modulation, which enables long-range and ultra-low energy communication [1]. While long-range wide area network (...
This approach facilitates a decrease in both implementation and maintenance expenses for LoRaWANs (Long Range Wide Area Networks) employing data repeaters to enhance coverage; but unfortunately, a lot of energy is wasted by the nodes. Nguyen et al. [21] proposed a two-stage solution for the ...
Energy consumption model for sensor nodes based on LoRa and LoRaWAN Sensors, 18 (7) (2018), p. 2104 View at publisherCrossrefView in ScopusGoogle Scholar [33] Arnaiz D. Raw atmospheric pressure, relative humidity and light intensity data timeseries (2022), 10.17632/ghjkcjn4dj.1 Mendeley ...
35 ≥10.0 ≥5.97 ≥5.27 ≥3.2 2 数传速率Kb/s 一档 二档 三档 四档 五档调制方式 16QA M QPSK BPSK BPSK BPSK Tab.1 SNR, bit rate and modulation 表1 信噪比、数传速率与调制方式 图2 固定速率误码 率与信噪比曲线 从上图可以得出,满足误码率要求情况下,不同传输速率的信噪比和误码率之间的关系,...
The Adaptive Data Rate (ADR) mechanism used by Long Range Wide Area Network (LoRaWAN) for resource allocation, is slow and ideal for static applications. However, a network with unsteady channel conditions due to mobility makes the ADR operation more difficult. Therefore, t...
The LoRaWAN based Low Power Wide Area networks aim to provide long-range connectivity to a large number of devices by exploiting limited radio resources. The Adaptive Data Rate (ADR) mechanism controls the assignment of these resources to individual end-devices by a runtime adaptation of their ...
The long-range wide-area network (LoRaWAN) uses the adaptive-data-rate (ADR) algorithm to control the data rate and transmission power. The LoRaWAN ADR algorithm adjusts the spreading factor (SF) to allocate the appropriate transmission rate and transmission power to ...
K. Q. Abdelfadeel, V. Cionca, and D. Pesch, "Fair adaptive data rate al- location and power control in lorawan," in 2018 IEEE 19th International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM), June 2018, pp. 14-15....
LoRaWAN provides several data rates for transmission and enables adaptive data rate control in order to maintain network connectivity. In the LoRaWAN, the wireless condition is considered by the reception status of the acknowledgement (ACK) message, and adaptive data rate control is performed ...
Therefore, considering these challenges, in this paper, we present a novel Contextual Aware Enhanced LoRaWAN Adaptive Data Rate (CA-ADR) for mobile IoT Applications. The proposed CA-ADR comprises two modes offline and online. In offline mode, we compile a dataset based on successful ...