Han-Chieh Chao

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A wireless MANET is a collection of wireless mobile hosts that dynamically<lb>create a temporary network without a fixed infrastructure. The topology of the<lb>network may change unpredictably and frequently. Therefore, multicast routing in ad<lb>hoc networks is a very challenging problem. This paper proposes a multi-constrained<lb>QoS multicast routing(More)
An important challenge for supporting multimedia applications in the Internet of Things is the security heterogeneity of wired and wireless sensor and actuator networks. In this work, we design a new and efficient media-aware security framework for facilitating various multimedia applications in the Internet of Things. First, we present a novel multimedia(More)
The black hole attack is one of the well-known security threats in wireless mobile ad hoc networks. The intruders utilize the loophole to carry out their malicious behaviors because the route discovery process is necessary and inevitable. Many researchers have conducted different detection techniques to propose different types of detection schemes. In this(More)
Many anonymity enhancing techniques have been proposed based on packet encryption to protect the communication anonymity of mobile ad hoc networks (MANETs). However, in this paper, we show that MANETs are still vulnerable under passive statistical traffic analysis attacks. To demonstrate how to discover the communication patterns without decrypting the(More)
In ad hoc networks, mobile node battery energy is finite and represents one of the greatest constraints for designing multicast routing protocols. In regards to the battery lifetime limitation in supporting multicast routing, some studies have investigated a power saving network layer. These proposed methods have always considered several techniques such as(More)
Traditional electronic program guides (EPGs) cannot be used to find popular TV programs. A personalized digital video broadcasting – terrestrial (DVB-T) digital TV program recommendation system is ideal for providing TV program suggestions based on statistics results obtained from analyzing largescale data. The frequency and duration of the programs that(More)
Network simulators are necessary for testing algorithms of large scale wireless sensor networks (WSNs), but lack the accuracy of real-world deployments. Deploying real WSN testbed provides a more realistic test environment, and allows users to get more accurate test results. However, deploying real testbed is highly constrained by the available budget when(More)