Abstract
Because the global positioning system (GPS) consumes a lot of power and does not work indoors, many GPS-free information brokerage schemes have been proposed for wireless sensor networks. In most existing schemes, the unit disk graph (UDG) model is used as the communication model. However, in real-world networks, networks with a quasi unit disk graph (QUDG) model are more realistic than networks with the UDG model. In this paper, we propose a GPS-free information brokerage scheme, termed reliable double-ruling-based information brokerage quasi unit disk graph (RDRIB_QUDG), that guarantees successful information retrieval without the geographic location acquired by the GPS in -QUDG wireless sensor networks. In RDRIB_QUDG, the double-ruling technique is used to replicate and retrieve information within a constructed virtual boundary. The simulations show that RDRIB_QUDG has good performance in terms of message construction overhead, message replication overhead, memory replication overhead, and retrieval latency.
Disclosure statement
No potential conflict of interest was reported by the authors.