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To improve intelligence level of the rural 400V power distribution grid, a new scheme of smart power distribution management is introduced. Smart power distribution cabinets handled by ARM-LINUX based intelligent systems are employed, which have mobile (GPRS/CDMA/3G) networking capability to communicate with the local power dispatch center, so that each cabinet can transfer grid parameters and other...
We have developed a new version of a pervasive system for monitoring and recording subjective pain experiences. The most important service the system offers to its users is real-time delivery of reported pain values from patients to nurses. Pain experiences are expressed on a six-value scale from "no pain" to "worst possible pain". The system was tested in four sessions with 23...
We propose a new clock duty control for the mobile display interface. This is designed by using the relation between the data and the strobe signals. The proposed scheme has an output duty error less than 5% for 20% skew and has under 20ps jitter from 500MHz to 1GHz operation.
This paper presents a cross-platform solution of smartphone-based mobile sink for wireless sensor networks, named uSink. With a cross-platform SD card, named uSD card, any smartphone with SD interface can be empowered with the capability to communicate with wireless sensor nodes. Furthermore, a middleware on mobile phone, named uSinkWare, is also designed to provide a typical mobile sink's functionalities,...
In this paper we explore the mobility of a mobile sink in a wireless sensor network (WSN) to prolong the network lifetime. Since the mechanical movement of mobile sink is driven by petrol and/or electricity, the total travel distance of the mobile sink should be bounded. To minimize the data loss during the transition of the mobile sink from its current location to its next location, its moving distance...
A Self-adaption Link-quality Detection Algorithm (SLDA) is proposed to implement the Data Collecting in Opportunistic Sensor Network. The new scheme adopts Self adaptive Link-quality Detection strategy to measure the real time link quality weight factor (LQWF), and combines energy consumption model of mobile nodes to predict optimal transmission path for message forwarding by means of the Unscented...
For some sensor network applications, the problem of sweep coverage, which periodically covers POIs (Points of Interest) to sense events, is of importance. How to schedule minimum number of mobile sensors to achieve the sweep coverage within specified sweep period is a challenging problem, especially when the POIs to be scanned exceeds certain scale and the speed of mobile sensor is limited. Therefore,...
This paper first presents a RFID-based mobile logistics monitoring system framework composed of mobile front-end application sub-system and back-end monitoring and service sub-system. The system architecture is designed, and the operating principle is described. The architectures and functions of the front-end application software and back-end monitoring software are discussed in detail. In practical...
As wide applications of wireless sensor networks, privacy concerns have emerged as the main obstacle to success. When wireless sensor networks are used to battlefield, the privacy about sink-locations become a crux issue. If sink location will be exposed to adversary, the consequence is inconceivable. In this paper, a scheme based on local flooding of source and greedy random-walk of sink is proposed...
The coverage problem is a fundamental and important issue with regard to wireless sensor networks. To reduce the number of sensor nodes, mobile nodes can be used to mitigate the sweep coverage problem. In this paper, a sweep coverage mechanism is proposed to keep the patrol times of mobile nodes approximate to one another. In simulation, various moving speeds and waiting times of mobile nodes are...
Tele-health is an inter-disciplinary area where the delivery of health, medical information and services over large and small distances is possible by combining electronic information with communication technologies. Deaths from cardiovascular diseases have decreased substantially over the past two decades, largely as a result of advances in acute care and cardiac surgery. These developments have...
This paper describes a scheme for providing mobile multimedia applications, distributed in a Wireless Local Area Network (WLAN), with seamless communications. Specifically, when multiple WLAN access points are available, the scheme enables a mobile node to select dynamically the access point to connect with, based on a combination of measured parameters such as signal strength, transmission rate,...
The advances of technology have made sensor networks an attractive approach for detecting events present in a geographic region. Most of recent studies have focused on stationary sensor networks where sensor nodes are homogeneous with fixed locations. However, if the monitored region is significantly larger than one sensor's sensing area, it will need a large number of sensors to cover the whole region...
In next generation of wireless mobile communications, it is demanded that users could visit Internet services through any kind of radio access technology. Monitoring of radio access network (RAN) is very important for reconfigurable terminals (RT) in Mobile Internet. It is the foundation of network cooperation and seamless access for user services. In this paper, a new RAN monitoring scheme based...
In realistic mobile heterogeneous environment, the quality perceived by user is variable and dependant on following major factors: available bit rate variation, packet loss and latency. Even though QoS management is enabled in most modern telecommunication systems, it does not ensure the actual end-user perceived quality of service level. Therefore, to make sure that operator follows SLA provisions,...
The rapid introduction of new mobile data services presents many challenges to wireless service providers. Unlike voice services, whose traffic characteristics are well understood, new data services are far more volatile and their demand on network resources is harder to predict. Data volumes are exploding and impacting not only the ability of the network to support such traffic but are also driving...
Accidents and sabotages are kinds of environmental disasters that constitute a growing threat to marine ecosystems. Recent events disclosed to the public audience the importance of developing methodologies and systems that can accurately and continuously monitor such events. Sensor networks have been successfully applied to early warning and environmental monitoring both in terrestrial and marine...
The inherent freedom in self-organized mobile ad-hoc networks (MANETs) introduces challenges for trust management; particularly when nodes do not have any prior knowledge of each other. Furthermore in MANETs, the nodes themselves should be responsible for their own security. We propose a novel approach for trust management in MANETs that is based on the nodes' own responsibility of building their...
The concept of wellness mobile is a novel mobile service wherein wireless handheld devices such as cell phones are equipped with a wellness monitoring application, thereby enabling real-time self-wellness monitoring by the cell phone user. The wellness mobile will provide a safe and protective environment for an increasing cell phone user-population to help combat anti-wellness factors such as stress,...
Mobile malware is rapidly developing, but current anti-virus products in mobile devices still use the signature-based solutions, which usually need a large database and cannot detect malware variants. In this paper, we proposed a behavior-based malware detection system for Windows Mobile platform called WMMD (Windows Mobile Malware Detection system). WMMD uses API interception techniques to dynamic...
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