Intan Shafinaz Mustafa

Intelligent Dynamic Bandwidth Allocation Algorithm in Upstream EPONs

An upstream access scheme for Ethernet passive optical networks, called the intelligent fuzzy-logic-based dynamic bandwidth allocation algorithm (IFLDBA) has been proposed. The algorithm provides the allotment of bandwidth between optical network units (ONUs) and within ONUs. Fuzzy logic is used to improve the bandwidth allocation within each ONU. We compare the IFLDBA algorithm with the existing broadcast polling algorithm. The results show that IFLDBA has bandwidth utilization of up to 21% better and lower delay than the broadcast polling algorithm.

Efficient dynamic bandwidth allocation algorithm for upstream EPON

In this paper, an efficient dynamic bandwidth allocation (DBA) algorithm based fuzzy logic for upstream Ethernet passive optical networks (EPON) is proposed. The algorithm provides the allotment of bandwidth for inter optical network unit (ONU) and intra ONU. We compared the performance of DBA algorithm based fuzzy logic and DBA algorithm without fuzzy logic in terms of bandwidth utilization and delay. The results shows that the usage of fuzzy logic improve the bandwidth utilization up to 20% and about 50% reduction on the system delay is achieved.

Green cloud platform for flood early detection warning system in smart city

The use of cloud computing is gaining its preferences by researchers and inventors worldwide including for the development in the Information and Communications Technology (ICT) infrastructures. This is especially in the move of defining a smart city development. Contrarily, theres always uncontrollable forces and natural disaster that would challenge mans creation in technological advancements. This article discusses one of the common disasters that occurred in both urban or rural housing areas and neighborhood i.e. the flood. This article is proposing that the flood management and early warning detection can be resolved with cloud computing facility. Through the progressive appearance of cloud computing, it is also expected that this facility is complemented with the Green Cloud technology to promote the green environment towards a better living in the smart cities.

Dynamic hierarchical bandwidth allocation using Russian Doll Model in EPON

This paper demonstrates a new hierarchical Dynamic Bandwidth Allocation algorithm using the Russian Doll Model (RDM) to allocate bandwidth for intra-Optical Network Unit (ONU) in an Ethernet Passive Optical Network (EPON). The allocation of bandwidth is based on the classification and prioritization of service. The algorithm addresses the requests of ONUs and provides differentiated services by balancing priority and fairness. The simulation results show that the proposed algorithm performs well in supporting the triple-play services, i.e. video, voice, and data, as well as making effective adjustment in balancing bandwidth sharing between the ONUs compared with two other existing Dynamic Bandwidth Allocation (DBA) algorithm. The proposed algorithms shows significant performance improvements in terms of bandwidth utilization, packet delay and the fairness.

Use of Geographic Information System (GIS) tools as network planning aid for antenna mounting in remote areas

This paper presents a network planning aid for choosing antenna mounting locations in remote area using Geographical Information System (GIS) tools. It is important to determine the right location and to decide the optimal network equipment for remote monitoring applications with challenging terrain. Prior to deploying any wireless network, this tool allows the field engineer to study the geographical condition of the target location. The result demonstrate that GIS tool can be utilized or guide the planner for deployment of antenna mountings in remote area.

Improving the performance of hierarchical bandwidth allocation for upstream EPON

Many issues of intra- optical network unit (ONU) bandwidth allocation in Ethernet Passive Optical Network (EPON) remain open. In this paper, we report the performance of hierarchical bandwidth allocation algorithm incorporated Russian Doll Model (RDM) as a solution to allocate bandwidth for intra- ONU in upstream EPON. The allocation of bandwidth is based on the class of service and its priority. Results confirm significant performance improvements for a wide range of traffic loads and triple-play (video, voice, and data) services in terms of the bandwidth utilization, wasted bandwidth and fairness compared with the SHDBA algorithm. The RDDBA maximum significant performance improvements compared to SHDBA is up to 30% depending on the variant and the characteristics of the network traffic. The hierarchical bandwidth allocation with RDM improves the performance of EPON by satisfying the requests of all ONUs and provide differentiated services by guaranteeing both the priority and fairness.

Enhanced Hierarchical Dynamic Bandwidth Allocation Algorithm with Excess Bandwidth and SLA Techniques for Upstream Ethernet PON

Passive Optical Networks (PONs) are thought to be the next step in the development of Access Networks and providing broadband access in the “last mile” area. Ethernet PON (EPON) gains the most attention from the researchers as it offers highly flexible and cost effective solution. In this paper we propose two high level scheduler algorithms inside the Optical Line Terminal (OLT) and Optical Network Units (ONU). In the proposed Dynamic Bandwidth Allocation (DBA) algorithm, the OLT allocates the bandwidth to the ONUs in proportion to the weight associated with the excess bandwidth available, while the ONU preferentially allocates its bandwidth to queues with a strict or non strict priority order. The algorithms provide dynamic bandwidth allocation and separate the burden of queue management fairly between the customer and the network. This led to less complicated and more intelligent equipment has been used on the customer’s premises. We show the results of simulations to validate the effectiveness of algorithms presented and to provide quality of service (QoS) for triple play real time services in Ethernet passive optical networks (EPONs).

Simulation Study of UWB Interference Effects on GSM 900 System

The impact of UWB interference on GSM 900 was studied in view of Federal Communication Commission (FCC) regulations. The maximum UWB transmitter power levels that would cause 1dB performance degradation on GSM 900 receivers were determined. UWB densities were computed for different GSM cluster size and the results showed that there is no harmful interference for GSM 900 system.

Affine versus projective transformation for SIFT and RANSAC image matching methods

Image registration is a process of determining the geometrical transformation that aligns two or more images taken from different viewpoints and sensors at different times. Scale Invariant Feature Transform (SIFT) method has gained more popularity since it extracts the highest number of features and matching points compared to Speeded-Up Robust Feature (SURF) and Harris Corner Detector at little computational cost. In this paper, a combination of SIFT and Random Sample Consensus (RANSAC) is used to produce panoramic image. In order to reject outliers and estimate the transformation model, affine and projective transformations are used to study the best geometrical transformations methods to be used. The results shows that the projective transformation has a better performance in terms of accuracy.

Site suitability analysis for landslide monitoring base station using GIS-based multicriteria evaluation technique

Landslide monitoring of power transmission towers in the rural areas is a challenging process especially if the slope is at a mountainous terrain and suspected to be insecure and risky. Identification of suitable locations for the landslide monitoring base station is one of the critical issues of network planning. Site suitability analysis has become unavoidable for delineating the appropriate site for planning initiatives, especially in the undulating terrain of the hills. It is important to determine the right location and to decide the optimal network equipment for remote monitoring applications. The study illustrates the use of geographic information system (GIS) and multicriteria evaluation (MCE) technique for selection of suitable sites for landslide monitoring base stations along the transmission tower line in Cameron Highland. Four criteria have been selected for site suitability analysis of the antenna base station (BS) which is tower distance, elevation, communication service coverage and slope. The generated thematic maps of these criteria were standardized using pairwise comparison matrix known as analytical hierarchy process (AHP). A weight for each criterion was generated by comparing them with each other according to their importance. With the help of these weights and criteria, the final site suitability map was prepared.