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Hybrid sensor and vehicular network (HSVAN) is a new and inexpensive technology that combines the features of wireless sensor network (WSN) with vehicular ad hoc network and (VANET). In HSVAN, sensor nodes' distribution is prearranged and deployed along with the roadsides and have centralized communication channel with sensor gateway that alert drivers from dangerous conditions. However, the network...
Handover is the process of transferring services from a Base Station (BS) to another BS. It is one of the key performance index for the mobile communication system. The success of the handover impact to increase the performance of services. Handover failures will impact to decrease the performance. This paper will discuss the analysis and improvement of handover failures. The case study of this research...
Proxy Mobile IPv6 (PMIPv6) protocol provides IP mobility support to a Mobile User (MU) once it performs a handover from an access router to another. Furthermore, Fast Handover for PMIPv6 (PFMIPv6) protocol has been standardized to improve the handover performance of PMIPv6 in terms of handover latency and packet loss. The limitation of these Centralized Mobility Management (CMM) protocols (e.g., non...
Yogyakarta is an education and tourism city. The quality of internet services is needed to support the education quality and tourist services. These services are supported by 3G WCDMA technology. This paper will discuss the need of Information Technology (IT) for education and tourism sector, and also assesment of the IT performance in Yogyakarta, specially data sevices for mobile devices. The most...
The development of telecommunication is very rapid. Although it reach the fourth generation, GSM is still have the most subscribers. To improve the performance of the GSM system, the system must be optimized periodically. The first stage of optimization process is measuring the RF parameters in the GSM system. The process of measurement is called drive test. The objective of drive test is to get the...
Water is a natural resource that is very important. All living beings consume water, such as plants, animals, and humans. When the water is contaminated by pollutants it will damage the environment. More than that, it would have an impact on human health. Before consumption, the water must be guaranteed without pollutants. Conductivity is one of water quality parameters. High water conductivity showed...
The latest 4G wireless technology, Long Term Evolution (LTE), is expected to be a promising wireless network for smart grid communications due to its high data rate and low delay. The needs of real time communications in the smart grid require reliable, confident and well tested wireless networks. Scheduling is one of the mechanisms which has a crucial role on the smart grid performance since it is...
This paper proposes a new terrain based formula to correct propagation loss model originally proposed by Hata for the 900 MHz band. This formula consists of an estimator of the standard deviation (σ) along the measuring path in west of Amman city, Jordan. The estimator is calculated by a quadratic regression formula to reflect terrain roughness of the path taken. This estimator is used as a correction...
Flood is a disaster where an area is unable to hold more water. It caused by soil's low absorption and hard rain. Flood can be predicted if information of short term rain intensity could known immediately. The result of development research about rain gauge that easily and promptly read using Bluetooth and modem RF-FSK will be discussed in this paper. Rain gauge's products which are manual, semi-automatic...
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