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In this paper, we propose three algorithms for border landmark selection, namely the convex hull-based (CHB) algorithm, the center node elimination (CNE) algorithm, and the hierarchy-structured (HS) algorithm. CHB works perfectly in theory and provides a deep insight into the landmark selection problem. At the same time, it is noticed that CHB is centralized and sensitive to errors in distance estimation...
The wireless mesh network is experiencing tremendous growth with the standardization of IEEE 802.11 and IEEE 802.16 technologies. Compared to its wired counterpart, the resource (e.g., capacity) of the wireless mesh network is limited. Worst yet, the wireless link quality is time and space varying, depending on the environment and interference. In order to make efficient use of the scarce channel...
The delay-tolerant mobile sensor network (DTMSN) distinguishes itself from conventional sensor networks by several unique characteristics, such as nodal mobility, sparse connectivity, delay tolerability, and fault tolerability. Being an opportunistic network where the communication links exist with certain probabilities only and thus become the scarcest resource, the routing metrics that have been...
The wireless link quality is time and space varying, depending on the environment and interference. In order to make efficient use of the scarce channel resource during topology formation, scheduling and routing, it is vital to understand the quality of the links in the wireless mesh network (in terms of e.g., probability of successful transmission or signal to noise ratio). The existing approaches...
While extensive studies have been carried out in the past several years for many sensor applications, they cannot be applied to the network with extremely low and intermittent connectivity, dubbed the delay/fault-tolerant mobile sensor network (DFT-MSN). Without end-to-end connections due to sparse network density and sensor node mobility, routing in DFT-MSN becomes localized and ties closely to medium...
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