Learn More
Mobile crowdsourced sensing (MCS) is a new paradigm which takes advantage of pervasive smartphones to efficiently collect data, enabling numerous novel applications. To achieve good service quality for a MCS application, incentive mechanisms are necessary to attract more user participation. Most of existing mechanisms apply only for the offline scenario(More)
Opportunistic routing, has been shown to improve the network throughput, by allowing nodes that overhear the transmission and closer to the destination to participate in forwarding packets, i.e., in forwarder list. The nodes in forwarder list are prioritized and the lower priority forwarder will discard the packet if the packet has been forwarded by a(More)
While conventional sensor networks have revealed their vast potentials, simple and special purposed data doubtlessly limits their expansion into information hungry domains. Video sensor networks present an unprecedented opportunity to annex rich information with distributed sensor networks. However, directional sensing range and high data rate unique to(More)
With recent advancements in mobile pervasive sensing and transmission technologies, especially the proliferation of smart phones, we are rapidly entering the era of the Internet of Things (IoT), which aims at sensing and interconnecting various physical objects and their surroundings in the realistic world more comprehensively and on a larger scale [1, 2].(More)
The server's storage I/O and network I/O bandwidths are the main bottleneck of VoD service. Multicast offers an efficient means of distributing a video program to multiple clients, thus greatly improving the VoD performance. However, there are many problems to overcome before development of multicast VoD systems. This paper critically evaluates and(More)
Data collection is a fundamental task in wireless sensor networks. In many applications of wireless sensor networks, approximate data collection is a wise choice due to the constraints in communication bandwidth and energy budget. In this paper, we focus on efficient approximate data collection with prespecified error bounds in wireless sensor networks. The(More)
Wireless sensor and actor networks (WSANs) are composed of sensors and actors to perform distributed sensing and acting tasks. To accomplish effective sensing and acting tasks, efficient coordination mechanisms of sensor-sensor, sensor-actor and actor-actor are required. In this paper, a novel three-level coordination model for WSANs is proposed, based on a(More)
Using insights from biological processes could help to design new optimization techniques for long-standing computational problems. This paper exploits a cellular computing model in the slime mold physarum polycephalum to solve the Steiner tree problem which is an important NP-hard problem in various applications, especially in network design. Inspired by(More)