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As nodes appear and disappear in a Wireless Sensor Network (WSN), communication protocols acting in the data link, network and transport layers adapt dynamically to the new network structure. We present an extension of the dynamic nature of WSNs to the web via an adaptive communication protocol called the adaptive Sensor Web Language (SWL). Adaptive SWL provides a web application with a reliable mechanism...
With the development of sensor, wireless mobile communication, embedded system and cloud computing, the technologies of Internet of Things have been widely used in logistics, Smart Meter, public security, intelligent building and so on. Because of its huge market prospects, Internet of Things has been paid close attention by several governments all over the world, which is regarded as the third wave...
The IP Multimedia Subsystem (IMS) aims to provide cellular access to all the services that the Internet offers; it is an overlay control layer on top of an IP layer. Wireless Sensor Networks (WSN) with mobile sinks are useful in a wide range of scenarios since they can improve the overall network lifetime and increase data capacity. Combining the capabilities of IMS with the rich set of contextual...
The paper is devoted to logical implication of MANet's protocols for gateway discovery in IPv6 Wireless Sensor Networks (IPv6-WSN). We implement three approaches in NS-2 simulator and evaluate its performance under the specified field of the networks of gateway discovery. The performance results present the packet delivery ratio and delay of end to end communication networks. The AODV protocol is...
This paper discusses an embedded access gateway, which takes OMAP3530 as the center core and is built upon the embedded Linux 2.6 operating system. Based on the character and advantage of 3G and ZigBee, this article advances the solution scheme of the wireless home gateway. Mainly analyzes the software design of the gateway, including the way to realize the communication between the gateway and 3G...
With deeply embedded wireless sensors, a new tier of the Internet is emerging that will extend into the physical world. These wireless sensor nodes are expected to vastly outnumber conventional computer hosts as we see them today, but their strict resource constraints are unlike other technologies already common to the Internet. As wireless sensor network research took off, many in the field eschewed...
This paper first introduces a heterogeneous IoT access network architecture for the Internet of Things (IoT). In the network, an IoT terminal can adaptively access to a wireless sensor network (WSN) gateway or a cellular base station (BS) according to the channel conditions. The heterogeneous IoT access network schedules the IoT terminal to access to either the WSN or the cellular network (CN) via...
Protocol architecture for a web-sensor gateway interconnecting internet and wireless sensor network is investigated. The web-sensor gateway is to deliver data between TCP/IP and Zigbee/IEEE802.15.4 protocols, transparently. Since the gateway provides a means to remotely control and aggregate sensor data over the internet, it needs to be designed in the view point of users and in their convenience...
In this paper, we propose an OSGi-based service aware home networking system (SAHN), which coordinates the integrated heterogeneity of Internet interfaces and provides the service information exchange between mobile appliances of home networking and Internet service providers. The SAHN system further assists users to discover the home networking services via the Internet and to execute the chosen...
This paper introduces the design and implementation of a wireless sensor network (WSN) gateway with multi-mode access to Internet supporting data collection and video surveillance. The wireless sensor network collects data, while the video surveillance devices are applied for the monitoring of WSN system. Both the wired and the wireless way of Internet access are discussed. Because of the bandwidth...
Wireless sensor networks consist of several hundredths of simple sensing devices, equipped with a radio. They are typically used for monitoring and automation purposes of large areas. Due to their simplicity, these networks quickly run out of energy, and often have problems regarding scalability and available bandwidth. To solve these issues, current research is mostly limited to the addition of extra...
Sensor nodes in ubiquitous sensor network (USN) environments are composed of many sensors and hardware components for various purposes and applications, such as service in the industrial field, the public administration sector, and in life services. A middleware is required for wireless sensors to treat a huge amount of information from sensor nodes. However, the use of a middleware and specialized...
A novel communication platform is presented, which helps in the monitoring and deployment of distributed wireless networks. Its major part is based on distributed embedded web servers connected to RF-communication heads. The web servers act as distributed communication hubs and exchange data via XML-feeds with web2.0-capable clients. The first implementations are concentrating on the monitoring direction,...
Using wireless sensor networks is an effective way of gathering data and also opens up new sensing opportunities. Wireless sensor networks can be more useful if the data can be effectively retrieved from the sensor network. This paper describes the development of a gateway node for a wireless sensor network, implemented in TinyOS, using the AT91RM9200 ARM evaluation kit from Atmel. This node enables...
Application driven wireless sensor network (WSN) has a great prospect, interconnecting WSN to current network infrastructure is the research hotspot. An interconnection method is proposed, which connected large-scale WSN to Internet based on IPv6. To satisfy application requirements, IPv6 address is mapped based on geography location in WSN, and a geography location routing protocol named as clockwise...
Today the construction of wireless sensing systems requires the use of rather high-priced pieces of hardware and the assembly of these hardware parts (wireless transmission core, sensor module, gateway device), as well as the implementation of the according software (sensor mote software, gateway software, end user software). This makes overall development and the thereby resulting product costly...
This paper investigates an architecture for interconnecting Internet and Zigbee sensor network which is founded on IEEE802.15.4 standard. We present a Web-sensor gateway to deliver data between Internet protocol and Zigbee/IEEE802.15.4 protocol, transparently. We also introduce the common gateway interface (CGI) technology to satisfy users on the Web browser to efficiently manage and query the Zigbee...
The NIST-supported IEEE 1451 set of standards is being developed to unify diverse standards by providing a base protocol which allows interoperability between sensor/actuator networks and busses. A key feature of the IEEE 1451 standard is that the data (and meta-data or TEDS) of all transducers are communicated on the Internet with the same format, independent of the sensor physical layer (wired or...
Established service discovery protocols such as UPnP allow control points to find devices and services and to retrieve descriptions about them in order to learn all about the device and services. However, general device-control point approaches are not suitable for wireless sensor networks due to severe resource constraints and gateway architecture. To alleviate the problems we change discovery processes:...
This paper provides a novel method to access ZigBee based wireless sensor networks (WSN) from the Internet using web service approach. We designed a novel gateway between the WSN and the Internet mainly for the scenario of home and building automation. With the improvement of the traditional gateway, the users on the Internet can access the data of the sensor networks flexibly via web services. Each...
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