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A search strategy of Level-Based Flooding for the Internet of Things.

Qiu T, Ding Y, Xia F, Ma H - Sensors (Basel) (2012)

Bottom Line: Query packets are broadcast in the network according to the levels of nodes.Upon receiving a query packet, sensor nodes decide how to process it according to the percentage of neighbors that have processed it.We show by extensive simulations that the performance of LBF in terms of cost and latency is much better than that of original flooding, and LBF can be used in IoT of different scales.

View Article: PubMed Central - PubMed

Affiliation: School of Software, Dalian University of Technology, Dalian 116620, China. qiutie@dlut.edu.cn

ABSTRACT
This paper deals with the query problem in the Internet of Things (IoT). Flooding is an important query strategy. However, original flooding is prone to cause heavy network loads. To address this problem, we propose a variant of flooding, called Level-Based Flooding (LBF). With LBF, the whole network is divided into several levels according to the distances (i.e., hops) between the sensor nodes and the sink node. The sink node knows the level information of each node. Query packets are broadcast in the network according to the levels of nodes. Upon receiving a query packet, sensor nodes decide how to process it according to the percentage of neighbors that have processed it. When the target node receives the query packet, it sends its data back to the sink node via random walk. We show by extensive simulations that the performance of LBF in terms of cost and latency is much better than that of original flooding, and LBF can be used in IoT of different scales.

No MeSH data available.


Query packet is broadcasted to Node n.
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f14-sensors-12-10163: Query packet is broadcasted to Node n.

Mentions: Figure 14 shows how the query packet is transmitted to the target. The target node is Node n. The level of the Node n is 2, so TTL of the packet is 2. The node that starts the query is the sink node. When the sink node broadcasts a query packet, because the sink node's level is less than its all neighbors, it broadcasts the packet to its all neighbors. None of the nodes in level 1 is the target node, so they process the packet according to above mentioned making decision process. Node n is found in 2 hops. And the query packet stops at level 2. In this query process, only nodes in 2 levels process the packet. The query packet needn't to be broadcast in the whole network.


A search strategy of Level-Based Flooding for the Internet of Things.

Qiu T, Ding Y, Xia F, Ma H - Sensors (Basel) (2012)

Query packet is broadcasted to Node n.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472822&req=5

f14-sensors-12-10163: Query packet is broadcasted to Node n.
Mentions: Figure 14 shows how the query packet is transmitted to the target. The target node is Node n. The level of the Node n is 2, so TTL of the packet is 2. The node that starts the query is the sink node. When the sink node broadcasts a query packet, because the sink node's level is less than its all neighbors, it broadcasts the packet to its all neighbors. None of the nodes in level 1 is the target node, so they process the packet according to above mentioned making decision process. Node n is found in 2 hops. And the query packet stops at level 2. In this query process, only nodes in 2 levels process the packet. The query packet needn't to be broadcast in the whole network.

Bottom Line: Query packets are broadcast in the network according to the levels of nodes.Upon receiving a query packet, sensor nodes decide how to process it according to the percentage of neighbors that have processed it.We show by extensive simulations that the performance of LBF in terms of cost and latency is much better than that of original flooding, and LBF can be used in IoT of different scales.

View Article: PubMed Central - PubMed

Affiliation: School of Software, Dalian University of Technology, Dalian 116620, China. qiutie@dlut.edu.cn

ABSTRACT
This paper deals with the query problem in the Internet of Things (IoT). Flooding is an important query strategy. However, original flooding is prone to cause heavy network loads. To address this problem, we propose a variant of flooding, called Level-Based Flooding (LBF). With LBF, the whole network is divided into several levels according to the distances (i.e., hops) between the sensor nodes and the sink node. The sink node knows the level information of each node. Query packets are broadcast in the network according to the levels of nodes. Upon receiving a query packet, sensor nodes decide how to process it according to the percentage of neighbors that have processed it. When the target node receives the query packet, it sends its data back to the sink node via random walk. We show by extensive simulations that the performance of LBF in terms of cost and latency is much better than that of original flooding, and LBF can be used in IoT of different scales.

No MeSH data available.