![]() They are evaluated in simulation on testbeds derived from a real-world RSSI measurement dataset. Then, two other algorithms that take advantage of both types of localization are proposed by combining the DV-hop and DML algorithms, namely DV + DML and DMLDV. ![]() The distance interval is represented by a disk defined according to the position of the signal’s transmitter node. Indeed, each RSSI value is associated with a distance interval used to model the imperfections of RSSI measurements. First, a new RSSI-based localization algorithm called disk-based multilateration (DML) is proposed to extend the well-known multilateration algorithm. This paper uses the simple principle of the range-free DV-hop algorithm and the less expensive range-based algorithm using received signal strength indicator (RSSI) measurement to locate unknown nodes in WSN. Range-free localization algorithms are less costly for hardware, but they achieve poor localization accuracy in the real-world environment. Range-based localization algorithms have some hardware requirements, so they are usually expensive to implement in practice. There are mainly two types of localization algorithms used to compute the position of the node, namely range-based and range-free algorithms. Node localization is an essential aspect of wireless sensor networks (WSNs).
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