Abstract
The geographic routing protocol only requires the location information of local nodes for routing decisions, and is considered very efficient in multi-hop wireless sensor networks. However, in dynamic wireless sensor networks, it increases the routing overhead while obtaining the location information of destination nodes by using a location server algorithm. In addition, the routing void problem and location inaccuracy problem also occur in geographic routing. To solve these problems, a novel fuzzy logic-based geographic routing protocol (FLGR) is proposed. The selection criteria and parameters for the assessment of the next forwarding node are also proposed. In FLGR protocol, the next forward node can be selected based on the fuzzy location region of the destination node. Finally, the feasibility of the FLGR forwarding mode is verified and the performance of FLGR protocol is analyzed via simulation. Simulation results show that the proposed FLGR forwarding mode can effectively avoid the routing void problem. Compared with existing protocols, the FLGR protocol has lower routing overhead, and a higher packet delivery rate in a sparse network.
Highlights
As a novel information acquisition and processing mode, the wireless sensor network [1,2] collects information through a large number of sensor nodes distributed within a monitored area and provides it to users after processing
This paper proposes a fuzzy logic-based [8,9] geographic routing protocol (FLGR) through researching the geographic routing protocol without the real-time location information of the destination node, and aims at solving the aforementioned problems
Studies on data forwarding strategies and the node location prediction algorithm can reduce the number of hops and the forwarding delay to some extent, existing strategies tend to increase the extra routing overhead to obtain the location information of destination nodes through the location service algorithm
Summary
As a novel information acquisition and processing mode, the wireless sensor network [1,2] collects information through a large number of sensor nodes distributed within a monitored area and provides it to users after processing. For dynamic wireless sensor networks, the existing routing protocols, based on location service algorithms, incur an additional routing overhead and storage overhead. The high routing overhead problem and inaccuracy location problem occur in existing geographic routing protocols. The routing void problem and network planarization problem [6] occur for the main component of geographic routing (the greedy forwarding mode and perimeter forwarding mode [7]), resulting in a longer path with a higher overhead. This paper proposes a fuzzy logic-based [8,9] geographic routing protocol (FLGR) through researching the geographic routing protocol without the real-time location information of the destination node, and aims at solving the aforementioned problems. A novel data forward mode is proposed based on the fuzzy location region of the destination node.
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