New Re-association Procedures for Reliable Handover in IEEE 802.15.4 Wireless Sensor Networks

Ayoub, Zayneb Trabelsi; Ouni, Sofiane

doi:10.1007/978-3-319-14225-8_1

Cited by 2 publications

(4 citation statements)

References 6 publications

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“…Ayoub and Ouni [ 22 ] have proposed a new re-association approach for WSN to guarantee the connectivity of MNs through a reliable handover mechanism. The main idea of this work is to choose an adequate coordinator for each one of mobile nodes in order to obtain appropriate child-parent relations and optimized network topologies.…”

Section: Related Workmentioning

confidence: 99%

“…Regarding the strategy adopted for handover, most of the above studies anticipate the selection of a more appropriate coordinator when degradation of the connection between the MN and the coordinator is detected [ 8 , 11 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. Another relevant characteristic is that one of the main modifications to the association mechanism is to reduce the number of scanned channels in the case of loss of connectivity [ 9 , 11 , 15 , 16 , 17 ], while some other schemes try to reduce the association time.…”

Section: Related Workmentioning

confidence: 99%

“…In terms of the metrics to select a suitable time instant to perform the handover, it can be seen from Figure 2 that the vast majority of the studies are based on RSSI [ 19 , 20 , 21 , 25 , 26 , 28 ] and/or LQI [ 8 , 11 , 15 , 18 , 20 , 23 , 24 , 25 , 27 ] for handover decision-making. Other works use the residual energy of the mobile nodes as a criterion [ 18 , 20 , 22 , 23 , 24 , 26 ]. Some other studies that use the direction of movement or position of the mobile node as a decision criterion can also be found [ 11 , 21 , 26 ].…”

Section: Related Workmentioning

confidence: 99%

“…Some other schemes propose an initiation process involving the coordinator node [ 8 , 9 , 14 , 17 ]. Several studies were also found in which decision making was distributed between the MN and the coordinator [ 22 , 24 , 25 ].…”

Section: Related Workmentioning

confidence: 99%

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A New Association Scheme for Handling Node Mobility in Cluster-Tree Wireless Sensor Networks

Casagrande

Moraes

Montez

et al. 2020

Sensors

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Node mobility in multi-hop communication environments is an important feature of Wireless Sensor Network (WSN)-based monitoring systems. It allows nodes to have freedom of movement, without being restricted to a single-hop communication range. In IEEE 802.15.4 WSNs, nodes are only able to transfer data messages after completing a connection with a coordinator through an association mechanism. Within this context, a handover procedure needs to be executed by a mobile node whenever there is a disconnection from a coordinator and the establishment of a connection to another one. Many applications, such as those found in health monitoring systems, strongly need support for node mobility without loss of data during the handover. However, it has been observed that the time required to execute the handover procedure is one of the main reasons why IEEE 802.15.4 cannot fully support mobility. This paper proposes an improvement to this procedure using a set of combined strategies, such as anticipation of both the handover mechanism and the scan phase enhancement. Simulations show that it is possible to reduce latency during the association and re-association processes, making it feasible to develop WSN-based distributed monitoring systems with mobile nodes and stringent time constraints.

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Section: Related Workmentioning

confidence: 99%