Wireless sensor networks (WSNs) are widely used in battle fields, logistic applications, healthcare, habitat monitoring,\r\nenvironmental monitoring, home security, and variety of other areas. The existing routing algorithms focus on the delivery of data\r\npackets to the sink using the shortest path; however, calculating the shortest path is not a cost-effective solution while disseminating\r\ndatasets of interest to the nearest sink node. The approach presented in this paper extends the existing PBR (priority-based routing)\r\nprotocol by providing a new fault-tolerant multipath priority-based routing (FT-MPPBR) scheme, which not only balances the\r\nenergy consumption while selecting multiple paths but also balances the workload of the node closest to the sink. The nodes closer\r\nto the sink dissipate more energy and can become the source of a communication bottleneck. Simulation results for the proposed\r\nrouting scheme are encouraging and clearly show that the FT-MPPBR has outperformed the existing PBR schemes in terms of\r\nprolonging the network lifetime and reliability. In healthcare sensor networks, timely dissemination of datasets is critical for the\r\nwell-being of a patient. This research further extends the PBR architecture for supporting computational intensive analysis by\r\ntransferring datasets of interest to the sensor grid node for improved communication and better throughput.
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