Hierarchical Topology Formation in Large-Scale IEEE 802.15.4 Wireless Sensor Networks

2019 ◽  
Author(s):  
D. Siedersberger ◽  
Carlos Montez ◽  
Erico Leao ◽  
F. Vasques
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Large Scale ◽  
Ieee 802.15.4 ◽  
Wireless Sensor ◽  
Hierarchical Topology ◽  
Topology Formation

scholarly journals An Efficient Superframe Structure with Optimal Bandwidth Utilization and Reduced Delay for Internet of Things Based Wireless Sensor Networks

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 1971 ◽  
Author(s):  
Sangrez Khan ◽  
Ahmad Naseem Alvi ◽  
Muhammad Awais Javed ◽  
Byeong-hee Roh ◽  
Jehad Ali
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Internet Of Things ◽  
Large Scale ◽  
Ieee 802.15.4 ◽  
Fine Tuning ◽  
Wireless Sensor ◽  
Bandwidth Utilization ◽  
Iot Applications ◽  
Ieee 802.15.4 Standard

Internet of Things (IoT) is a promising technology that uses wireless sensor networks to enable data collection, monitoring, and transmission from the physical devices to the Internet. Due to its potential large scale usage, efficient routing and Medium Access Control (MAC) techniques are vital to meet various application requirements. Most of the IoT applications need low data rate and low powered wireless transmissions and IEEE 802.15.4 standard is mostly used in this regard which offers superframe structure at the MAC layer. However, for IoT applications where nodes have adaptive data traffic, the standard has some limitations such as bandwidth wastage and latency. In this paper, a new superframe structure is proposed that is backward compatible with the existing parameters of the standard. The proposed superframe overcomes limitations of the standard by fine-tuning its superframe structure and squeezing the size of its contention-free slots. Thus, the proposed superframe adjusts its duty cycle according to the traffic requirements and accommodates more nodes in a superframe structure. The analytical results show that our proposed superframe structure has almost 50% less delay, accommodate more nodes and has better link utilization in a superframe as compared to the IEEE 802.15.4 standard.

Architecting Large Scale Wireless Sensor Networks Publish/Subscribe Applications: A Graph-Oriented Approach

2013 ◽  
Vol 321-324 ◽  
pp. 2768-2771
Author(s):  
Biao Dong
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
High Throughput ◽  
Hierarchical Model ◽  
Large Scale ◽  
Wireless Sensor ◽  
Hierarchical Graph ◽  
Hierarchical Topology ◽  
Topology Model ◽  
Oriented Approach

This paper presented a approach, called GOHM, for modeling and implementing the architecture of large scale wireless sensor networks(LSWSNs) publish/subscribe(Pub/Sub) applications using a graph-oriented hierarchical model(GOHM). Considering the scalability of topology which was necessary in the LSWSNs, a sparse hierarchical graph(SHG) was defined based on the hierarchical topology model. The simulation indicated that SHG provided low mean-latency at high throughput for transmitting messages. The results imply that SHG can easily be constructed, while ensuring good scalability.

scholarly journals Dynamic Reconfiguration of Cluster-Tree Wireless Sensor Networks to Handle Communication Overloads in Disaster-Related Situations

Sensors ◽  
2020 ◽  
Vol 20 (17) ◽  
pp. 4707 ◽  
Author(s):  
Miguel Lino ◽  
Erico Leão ◽  
André Soares ◽  
Carlos Montez ◽  
Francisco Vasques ◽  
...  
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Large Scale ◽  
Ieee 802.15.4 ◽  
Dynamic Reconfiguration ◽  
Service Level ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Cluster Tree ◽  
And Control

The development of flexible and efficient communication mechanisms is of paramount importance within the context of the Internet of Things (IoT) paradigm. IoT has been used for industrial, commercial, and residential applications, and the IEEE 802.15.4/ZigBee standard is one of the most suitable protocols for this purpose. This protocol is now frequently used to implement large-scale Wireless Sensor Networks (WSNs). In industrial settings, it is becoming increasingly common to deploy cluster-tree WSNs, a complex IEEE 802.15.4/ZigBee-based peer-to-peer network topology, to monitor and control critical processes such as those related to oil or gas, mining, or certain specific chemicals. The remote monitoring of critical events for hazards or disaster detection in large areas is a challenging issue, since the occurrence of events in the monitored environment may severely stress the regular operation of the network. This paper proposes the Dynamic REconfiguration mechanism of cluster-Tree WSNs (DyRET), which is able to dynamically reconfigure large-scale IEEE 802.15.4 cluster-tree WSNs, and to assign communication resources to the overloaded branches of the tree based on the accumulated network load generated by each of the sensor nodes. A complete simulation assessment demonstrates the proposed mechanism’s efficiency, and the results show that it can guarantee the required quality of service level for the dynamic reconfiguration of cluster-tree networks.

scholarly journals Autoconfiguration with Global Addresses Using IEEE 802.15.4 Standard in Multi-hop Networks

Enfoque UTE ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 44-58
Author(s):  
Carlos Egas Acosta ◽  
David Cali ◽  
Cristian Espinosa
Keyword(s):  
Wireless Sensor Networks ◽  
Sensor Networks ◽  
Large Scale ◽  
Ieee 802.15.4 ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Correct Operation ◽  
Allocation Process ◽  
Ieee 802.15.4 Standard ◽  
The Internet Of Things

Wireless sensor networks continue to attract a lot of attention from academia and industry promoting large-scale deployments in applications related to the Internet of Things (IoT). Unfortunately, a network containing a large number of sensor nodes also leads to difficulty in the configuring process and assignment of identifiers to nodes. Various approaches have been proposed to solve problems of auto-configuration in Wireless sensor networks, however, still, there are some issues remaining related to automatic assign identifiers A cluster-based hierarchical global address allocation scheme is proposed for a wireless sensor network. The proposal uses the IEEE 802.15.4 protocol and aims to reduce the latency of the identifier assignments and reduce the network level processes to be performed at the node. The address allocation process assigns each node a unique global address, which allows the node to have end-to-end connectivity without network-level involvement. The scenario of adding new nodes to the network or nodes that leave it is contemplated. Finally, the proposed scheme is evaluated experimentally, verifying the correct operation of the algorithm proposed in the implemented prototype.

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