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Recent advances in wireless communications technology and low-power, low-cost CMOS imaging sensors enable a new sensing modality employing ubiquitous distributed video sensing. In many video sensing applications multimedia streams are often required by the base station to provide detailed information of the target spot in the sensor field. However, limited bandwidth, unstable network environment,...
Situations that need quick responses, just like monitor of enemy in battlefield or emergency preparedness, the quick response to large amounts of datas bring great challenges to traditional wireless sensor network routing protocol. Most of the routing protocols use a static cluster head node to collect datas from the entire network, resulting in large communication capacity around the cluster head...
The recent advances in radio and embedded system technologies have enabled the proliferation of wireless microsensor networks. Such wirelessly connected sensors are released in many diverse environments to perform various monitoring tasks. The effectiveness of these networks is determined to a large extent by the coverage provided by the sensor deployment. The positioning of sensors affect coverage,...
Mobile and wireless networks have developed significantly because of improved flexibility, reduced costs and adaptability to various technologies. In portable technologies, the main factor is node mobility, which causes frequent changes in network topology. Multicast routing protocols affects the performance of network topology. Routing paths in MANETs and WSNs potentially contain multi-hop communications...
Achieving optimal actor resources usage is one of the fundamental issues in Wireless sensor and Actor Networks (WSANs). One solution is to maximize the mutually exclusive regions (i.e., regions covered by one actor). In this paper, we take a novel approach to define and resolve the mutual exclusion problem. We propose CRMEA, (Centralized Resource-based Mutual Exclusion Algorithm), that constructs...
In sparse mobile sensor networks, nodes have a small number of neighbors with intermittent connectivity. This paper presents a new networking protocol for this type of network, aimed at maximizing system performance in terms of both delay and reliability. The system is motivated by the observation that many applications on this type of network have two kinds of co-existing data packets: those with...
Wireless Sensor Networks (WSN) now advance into areas where new scenarios and applications require WSNs to meet certain Quality of Service (QoS) requirements. To tackle these challenges, a routing approach has to consider limited energy supply of sensor nodes, dynamic network conditions as well as node mobility. This paper presents QoS-AODV6E, a routing scheme based on the Ad-hoc On-Demand Distance...
Wireless sensor networks (WSNs) have a variety of purposes. They are mainly used for monitoring environmental factors, like CO2 concentrations, temperature and humidity. Other applications of sensor networks focus on detecting traffic parameters, e.g. passenger flows, damaged roads and traffic lights. This paper extends the current research with an economic feasibility of a real case, deploying a...
This paper discusses the role of three mobility models namely, fully coordinated mobility, fully random mobility and emergent mobility models in improving area coverage and detection effectiveness of a set of mobile sensors in a mobile surveillance system. A novel anti-flocking algorithm that mimics solitary animal's social behavior is described. A multiagent-based system has been implemented to examine...
In order to solve the problem that program-code of the sensor node in wireless sensor network was difficult to upgrade, the application layer protocol OTA-WSN was presented. With reference to the OTA Technology applied in mobile network, this paper defined the functions of each communication sector in the protocol, including package's format of the application layer packages and data transfer protocol...
Sensor deployment problem is one of the important problems in Wireless Sensor Networks (WSN) since it represents the first phase that most of the network operations depends on. Sensor deployment strategies can be classified into two classes which are deterministic and autonomous (random) deployment. In the deterministic deployment, the deployment field is assumed accessible as well as the number of...
The following topics are dealt with: wireless sensor network; ubiquitous computing; trustworthy computing; ubiquitous data management; embedded wireless communication; pervasive services; cyber-physical system; mobile computing; and mobile network.
Wireless sensor networks have been widely deployed to perform sensing constantly at specific locations, but their energy consumption and deployment cost are of great concern. With the popularity and advanced technologies of mobile phones, participatory urban sensing is a rising and promising field which utilizes mobile phones as mobile sensors to collect data, though it is hard to guarantee the sensing...
Combining with the characteristics of intelligent transportation system and introduces wireless sensor networks technology. This paper illustrates a kind of intelligent transportation system solution of wireless sensor networks based on ZigBee technology. Through the comprehensive analysis of three respects of network topology, energy saving as well as being stable and reliable, this paper brings...
The paper deals with the following topics: wireless sensor networks; peer-to-peer networks; distributed systems; pattern clustering; Web service; mobile networks; ad-hoc networks; Internet; virtual machines; data security; cryptography; traffic engineering computing; protocols; image processing; video signal processing; tourism computing; and interoperability.
In this work, we present a monitor and rescue system utilizing hybrid networks which is a integration of stationary sensor networks and mobile sensor networks: stationary sensor networks comprised of large numbers of small, simple, and inexpensive wireless sensors, and the mobile sensor network contains a set of mobile sensors (robots). The static sensors in our network have “monitoring” ability,...
The benefits of using mobile sink to prolong sensor network lifetime have been well recognized. However, few provably theoretical results remain are developed due to the complexity caused by time-dependent network topology. In this work, we investigate the optimum routing strategy for the static sensor network. We further propose a number of motion stratifies for the mobile sink(s) to gather real...
Most of the work on geocasting has been done for mobile ad-hoc networks and vehicular ad-hoc networks. This paper presents a novel Geocast technique with the hole detection in the geocast region for underwater environment. The proposed model named as Routing and Multicast Tree based Geocasting (RMTG) has been designed for underwater sensor networks. Here we propose a theoretical model for underwater...
Comprised by a swarm of acoustically linked and cooperative autonomous underwater vehicles (AUV's) with onboard sensors, an underwater mobile sensing network (UMSN) will be a complementary means to fixed observatory networks e.g. seafloor observatory networks and moored buoy arrays. It has obvious advantages over single large AUV in higher efficiency due to parallel observation, stronger robustness...
The following topics are dealt with: communication theory; signal processing; wireless communication system; mobile network; Internet; quality of service; ad hoc network; wireless sensor network; wireless mesh network; optical network; multimedia services; and information system security.
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