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In mobile opportunistic networks (MONs), a large number of intelligent devices carried by moving people can conduct message transmission without the support of communication infrastructures. Routing is one of the concerning and challenging research hotspots in MONs because of nodes’ mobility, intermittent connectivity, limited nodes’ energy, and the dynamic changing quality of the wireless channel...
Introduction of mobile sinks into a wireless sensor network can largely improve the network performance. However, sink mobility can cause unexpected changes of network topology, which may bring excessive protocol overhead for route maintenance and may offset the benefit from using mobile sinks. In this paper, we propose an efficient data‐driven routing protocol (DDRP) to address this problem. The...
In a wireless sensor network with mobile sinks, the maintenance of efficient data delivery structure often brings a large amount of control overhead, which may offset the benefit of introducing mobile sinks. In this paper, we propose a multi-stage data routing protocol (called MLRP) to address this problem. To reduce the protocol overhead, MLRP integrates layered Voronoi scoping and dynamic anchor...
Diagnosing a large-scale sensor network is a crucial but challenging task. Particular challenges include the resource and bandwidth constraints on sensor nodes, the spatiotemporally dynamic network behaviors, and the lack of accurate models to understand such behaviors in a hostile environment. In this paper, we present the Sensor Anomaly Visualization Engine (SAVE), a system that fully leverages...
Delay is an important metric in Wireless-Optical Broadband Access Network (WOBAN). We introduce external buffer and design Delay-Differentiated Routing Algorithm (DDRA) for WOBAN. We show that delay performance of WOBAN can be improved by DDRA.
A fundamental challenge of efficient network planning and traffic engineering is being able to directly relate traffic flows to network paths. In this paper we propose a new approach for network monitoring which has the ability of directly relating traffic flows to network paths, termed Intrinsic Monitoring. The approach advocates storing node and link related metrics within the packet header structure...
We study the capabilities of virtual addressing schemes for efficient and failure tolerant routing in sensor networks. In particular, we present the virtual cord protocol (VCP) that uses techniques known from peer-to-peer networks, i.e. distributed hash tables (DHTs) are used to associate data items in sensor networks with particular node addresses. The addresses of nodes are dynamically maintained...
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