scholarly journals Measurement-based Analysis of the Effect of Duty Cycle in IEEE 802.15.4 MAC Performance

2013 ◽  
Author(s):  
Francois Despaux ◽  
Ye-Qiong Song ◽  
Abdelkader Lahmadi
Keyword(s):  
Duty Cycle ◽  
Ieee 802.15.4

scholarly journals Duty Cycle Control Method Considering Buffer Occupancy for IEEE 802.15.4-Compliant Heterogeneous Wireless Sensor Network

2021 ◽  
Vol 11 (4) ◽  
pp. 1362
Author(s):  
Kohei Tomita ◽  
Nobuyoshi Komuro
Keyword(s):  
Duty Cycle ◽  
Ieee 802.15.4 ◽  
Control Method ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Delivery Ratio ◽  
Buffer Occupancy ◽  
Heterogeneous Wireless Sensor Networks ◽  
Heterogeneous Wireless Sensor Network ◽  
Analytical Expressions

This paper proposes a Duty-Cycle (DC) control method in order to improve the Packet Delivery Ratio (PDR) for IEEE 802.15.4-compliant heterogeneous Wireless Sensor Networks (WSNs). The proposed method controls the DC so that the buffer occupancy of sensor nodes is less than 1 and assigns DC to each sub-network (sub-network means a network consisting of a router node and its subordinate nodes). In order to use the appropriate DC of each sub-network to obtain the high PDR, this paper gives analytical expressions of the buffer occupancy. The simulation results show that the proposed method achieves a reasonable delay and energy consumption while maintaining high PDR.

Adaptive IEEE 802.15.4 MAC Protocol for Wireless Sensor Networks

2015 ◽  
pp. 109-123 ◽  
Author(s):  
Yousef S. Kavian ◽  
Hadi Rasouli
Keyword(s):  
Wireless Sensor Networks ◽  
Energy Consumption ◽  
Sensor Networks ◽  
Duty Cycle ◽  
Network Traffic ◽  
Ieee 802.15.4 ◽  
Extreme Environments ◽  
Wireless Sensor ◽  
Media Access ◽  
The Coordinator

The energy efficiency is a main challenging issue for employing wireless sensor networks (WSNs) in extreme environments where the media access progress consumes the main part of network energy. The IEEE 802.15.4 is adopted in low complexity, ultra-low power and low data rate wireless sensor applications where the energy consumption of nodes should be managed carefully in harsh and inaccessible environments. The beacon-enabled mode of the IEEE 802.15.4 provides a power management scheme. When the network traffic is variable, this mode does not work as well and the coordinator is not capable for estimating the network traffic and adjusting proper duty cycle dynamically. In this chapter an approach for estimating network traffic in star topology is proposed to overcome this issue where the coordinator could estimate the network traffic and dynamically adjusts duty cycle proportion to the variation of network traffic. The simulation results demonstrate the superiority of proposed approach for improving the energy consumption, throughput and delay in comparison with the IEEE 802.15.4 under different traffic conditions.

scholarly journals A Novel QoS-Oriented Intrusion Detection Mechanism for IoT Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Abdulfattah Noorwali ◽  
Ahmad Naseem Alvi ◽  
Mohammad Zubair Khan ◽  
Muhammad Awais Javed ◽  
Wadii Boulila ◽  
...  
Keyword(s):  
Intrusion Detection ◽  
Duty Cycle ◽  
Ieee 802.15.4 ◽  
Large Data ◽  
Sensor Nodes ◽  
Soft Decision ◽  
Medium Access ◽  
Malicious Nodes ◽  
Detection Mechanism ◽  
Iot Applications

Wireless sensor network (WSN) is an integral part of Internet of Things (IoT). The sensor nodes in WSN generate large sensing data which is disseminated to intelligent servers using multiple wireless networks. This large data is prone to attacks from malicious nodes which become part of the network, and it is difficult to find these adversaries. The work in this paper presents a mechanism to detect adversaries for the IEEE 802.15.4 standard which is a central medium access protocol used in WSN-based IoT applications. The collisions and exhaustion attacks are detected based on a soft decision-based algorithm. In case the QoS of the network is compromised due to large data traffic, the proposed protocol adaptively varies the duty cycle of the IEEE 802.15.4. Simulation results show that the proposed intrusion detection and adaptive duty cycle algorithm improves the energy efficiency of a WSN with a reduced network delay.

scholarly journals Analysis of energy model and Performance of IEEE 802.15.4 WSNs under Different Duty Cycle

2014 ◽  
Vol 9 (2) ◽  
pp. 48-54 ◽  
Author(s):  
Sarvesh Kumar Singh ◽  
◽  
Rajeev Paulus ◽  
A.K Jaiswal ◽  
Mayur Kumar
Keyword(s):  
Duty Cycle ◽  
Ieee 802.15.4 ◽  
Energy Model ◽  
And Performance

Energy Efficient Beacon-Enabled IEEE 802.15.4 Guaranteed Time Slot-Based Adaptive Duty Cycle Algorithm for Wireless Sensor Network

2021 ◽  
pp. 2150256
Author(s):  
Manoj Tolani ◽  
Sunny ◽  
Rajat Kumar Singh
Keyword(s):  
Duty Cycle ◽  
Energy Efficient ◽  
Ieee 802.15.4 ◽  
Simulation Analysis ◽  
Time Slot ◽  
Load Condition ◽  
Medium Access Control Protocol ◽  
Traffic Load ◽  
Medium Access ◽  
Guaranteed Time Slot

In this work, energy-efficient adaptive duty cycle guaranteed time slot algorithm is proposed for beacon-enabled standard medium access control protocol to efficiently handle low, medium and high data traffic loads. The proposed protocol can efficiently handle high traffic load by effective utilization of slots. The protocol can dynamically update the number of slots for contention access period and contention free period in each beacon interval. Therefore, it can capably handle high network load condition. The protocol continuously monitors the utilization capacity of each of the sensor node and allots the contention free period slots to the needy nodes based on their utilization capacity. Simulation analysis is done for three different scenarios. The performance of the proposed protocol is compared with the other existing protocols. Simulation results show the overall superiority of our proposed algorithm in terms of packet delivery and energy consumption.

scholarly journals OSCAR: An Optimized Scheduling Cell Allocation Algorithm for Convergecast in IEEE 802.15.4e TSCH Networks

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2493
Author(s):  
Mohamed Osman ◽  
Frederic Nabki
Keyword(s):  
Duty Cycle ◽  
Ieee 802.15.4 ◽  
Heavy Traffic ◽  
Traffic Load ◽  
Allocation Algorithm ◽  
Channel Hopping ◽  
Average Latency ◽  
Ieee 802.15.4 Standard ◽  
To Receive ◽  
Different Sources

Today’s wireless sensor networks expect to receive increasingly more data from different sources. The Time Slotted Channel Hopping (TSCH) protocol defined in the IEEE 802.15.4-2015 version of the IEEE 802.15.4 standard plays a crucial role in reducing latency and minimizing energy consumption. In the case of convergecast traffic, nodes close to the root have consistently heavy traffic and suffer from severe network congestion problems. In this paper, we propose OSCAR, an novel autonomous scheduling TSCH cell allocation algorithm based on Orchestra. This new design differs from Orchestra by allocating slots according to the location of the node relative to the root. The goal of this algorithm is to allocate slots to nodes according to their needs. This algorithm manages the number of timeslots allocated to each node using the value of the rank described by the RPL routing protocol. The goal is that the closer the node is to the root, the more slots it gets in order to maximize the transmission opportunities. To avoid overconsumption, OSCAR sets up a mechanism to adjust the radio duty cycle of each node by reducing the slots allocated to inactive nodes regardless of their position in the network. We implement OSCAR on Contiki-ng and evaluate its performance by both simulations and experimentation. The performance assessment of OSCAR shows that it outperforms Orchestra on the average latency and reliability, without significantly increasing the average duty cycle, especially when the traffic load is high.

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