Internet Protocol (IP) addresses are frequently used as a method of locating web users by researchers in several different fields. However, there are competing reports concerning the accuracy of those locations, and little research has been done in manually comparing the IP geolocation databases and web page geographic information. This paper categorized web page from the Yahoo search engine in...

The Regional Internet Registries (RIRs) publish information about all allocated IPv4 and IPv6 address blocks including country codes for each block. This information can be used for IP address geolocation. However, since large IP address blocks assigned to one country may belong to large international organisations spread over multiple countries the accuracy is questionable. With data from May ...

Most UAV(unmaned aerial vehicle) systems use GPS signals only to locate the emitter’s position. However GPS signals contain unwanted information contaminated by environmental components and many interference signals. In this paper, to obtain TDoA signal, we use two UAVs which are equipped with embedded wireless sensors. Under the real geolocation circumstance, it is very difficult to estimate t...

By taking advantage of the ever growing deployment of wireless networks, the automotive industry is increasingly enabling vehicles to communicate with one another and with the infrastructure, with benefits to information delivery and safety on the road. Vertical Handovers can be used to ensure that the Quality of Service demanded by applications (e.g., throughput, latency) is met while the vehi...