Design and evaluation of a new MAC protocol for long-distance 802.11 mesh networks
Proceedings of the 11th annual international conference on Mobile computing and networking
Evolution and sustainability of a wildlife monitoring sensor network
Proceedings of the 8th ACM Conference on Embedded Networked Sensor Systems
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Wireless sensor networks have been proved to be mature technologies to monitor nature reserves for wildlife and ecological environment protection. Nature reserves are particularly wide-area and consist of complex terrains. Moreover most of them have no 2G/3G coverage due to their sparse population. The data collected by sensor networks were delivered to the end user either by high-cost satellite communications or even manually. One-hop long distance wireless links have also been leveraged to reach cellular connectivity nearby. Low-cost and ubiquitous wide-area connectivity is still an obstacle in such solutions. To address this issue, we proposed a hierarchical sensor network architecture based on LD mesh (Long-Distance wireless mesh) networks. The goal of the system is to integrate various types of sensors (scalar and image) and real-time applications (video and audio) into a whole and achieve flexible wide-area connectivity.