Abstract
To improve the packet delivery ratio in wireless sensor networks, many approaches such as multipath, opportunistic, and learning-based routing protocols have been proposed. However, the performance of the existing protocols are degraded under long-hop wireless sensor networks because the additional overhead is proportional to the number of hops. To deal with the overhead, we propose an opportunistic multipath routing that forecasts the required number of paths, as well as bifurcation based on opportunistic routing according to the reliability requirement. In the proposed scheme, an intermediate node is able to select a different node for each transmission and to handle path failure adaptively. Through a performance evaluation, we demonstrate that the proposed scheme achieves a higher packet delivery ratio and reduces the energy consumption by at least approximately 33% and up to approximately 65% compared with existing routing protocols, under the condition of an 80% link success ratio in the long-hop sensor network.
Highlights
Most existing routing protocols in Wireless Sensor Networks (WSNs) are designed based on the single-path routing protocol
As an improvement to the link reliability leads to a packet delivery ratio, the proposed scheme could satisfy the required packet delivery ratio with a fewer number of paths compared with the existing multipath routing
The reason why they have not suffered from significant energy drain compared to radio-disjoint geographic multipath routing protocol (RGMR) and the proposed scheme is because when they perform packet retransmission to satisfy the required packet delivery ratio, the energy consumption of the retransmission is less than the energy consumption for path recovery
Summary
Most existing routing protocols in Wireless Sensor Networks (WSNs) are designed based on the single-path routing protocol. This scheme could transmit the packet through the best path found in the learning phase, it does not prevent the degradation of the packet delivery ratio in a long-hop sensor network because it exploits only one path To address these problems, we propose an opportunistic multipath routing to improve the packet delivery ratio with low energy consumption in long-hop WSNs. In the proposed scheme, an intermediate node forecasts a required number of paths based on improved link reliability by the opportunistic routing. As an improvement to the link reliability leads to a packet delivery ratio, the proposed scheme could satisfy the required packet delivery ratio with a fewer number of paths compared with the existing multipath routing. The proposed scheme is summarized and simulation results are presented
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have