Query Performance of CORBA Trading Object Service Using LDAP As Backend Storage

This research is an initiative towards increasing the performance of trading service in a CORBA environment so that the trader server can provide a fast response when a query is performed. Based on the statement in the trading service specification issued by OMG and past research, the selection of backend storage for the trader server influences the performance of the trading service. Thus, an emphasis on the selection of appropriate solutions is focused on the most suitable backend storage to be used by the trader server in order to improve the query operation in the trading service. Read-optimized storage is the chosen criteria of backend storage for this research as, ultimately, it allows the searching and retrieving process to be improved in the trading service during the query operation. This fact is proven in this research, and the storage chosen as the suggested solution is LDAP. This thesis examines the capability of LDAP in improving the performance of query operation in the trading service in which a performance measurement is conducted to differentiate the performance result obtained from the trading service which uses LDAP as its backend storage, and the trading service that uses relational database as its backend storage. Based on the experiments conducted, we find that the trading service using LDAP shows a better performance as compared to the trading service with the relational database. From the results, it has been further proven that there is an increase in the performance during the query operation in the trading service that uses LDAP as its backend storage

Using NDN in improving energy efficiency of MANET

This paper seeks to extol the virtues of named data networking (NDN), as an alternative to host-centric networking (HCN), for its prominent features that can be taken advantage of to significantly reduce energy consumption demands in a mobile ad hoc network (MANET) implementation. Therefore, a NDN-based content routing mechanism was compared with two types of HCN routing protocol implementations in this study: OLSR and Batman-adv. The experimental results obtained from this research provide early evidence that NDN can increase the energy efficiency of MANETcompared to the use ofHCNprimarily TCP/IP on the network stack solution for MANET. Of particular note would be NDN-based content routing’s viability as a solution for energy consumption issues that plague wireless multi-hop ad hoc networks. Last but not least, this paper also provides the future research direction that could be undertaken on the subject

A critical review of MANET testbed using mobile robot Technology

This paper is a continuation of our previous paper under the same topic, MANET testbed using mobile robot technology. In our previous paper, we studied the topic by scrutinizing all the technical aspects and presented it as a technical review. However in this paper, we study the topic and presents it as a critical review that dwells into four aspect, namely (i) purpose, a ccessibility and s cope of testbed facilities, (ii) usability and c ontrollability of robot m obility in t estbed facilities, (iii) repeatability and r e producibility of real m obility in t estbeds, and (iv) tools for MANET implementation, deployment and d ebugging for e xperiments. With the wealth of information on the topic provided in this paper, the content of this paper is expected to be a source of reference for MANET researchers who are at a crossroad when selecting the preferred mobile robot technology and approach to suit their own specific needs

A critical review of MANET testbed using mobile robot technology

This paper is a continuation of our previous paper under the same topic, MANET testbed using mobile robot technology. In our previous paper, we studied the topic by scrutinizing all the technical aspects and presented it as a technical review. However in this paper, we study the topic and presents it as a critical review that dwells into four aspect, namely (i) purpose, a ccessibility and s cope of testbed facilities, (ii) usability and c ontrollability of robot mobility in t estbed facilities, (iii) repeatability and r e producibility of real m obility in t estbeds, and (iv) tools for MANET implementation, deployment and d ebugging for experiments. With the wealth of information on the topic provided in this paper, the content of this paper is expected to be a source of reference for MANET researchers who are at a crossroad when selecting the preferred mobi le robot technology and approach to sui t thei r own speci f ic needs

Mobile ad hoc network testbed using mobile robot technology

MANET (Mobile Ad Hoc Network) researchers have shown increased interest in using mobile robot technology for their testbed platforms. Thus, the main motivation of this paper is to review various robot-based MANET testbeds that have been developed in previously reported research. Additionally, suggestions to heighten mobility mechanisms by using mobile robots to be more practical, easy and inexpensive are also included in this paper, as we unveils ToMRobot, a low-cost MANET robot created from an ordinary remote control car that is capable of performing a real system MANET testbed with the addition of only a few low-cost electronic components. Despite greatly reduced costs, the ToMRobot does not sacrifice any of the necessary MANET basic structures and will still be easily customizable and upgradeable through the use of open hardware technology like Cubieboard2 and Arduino, as its robot controller. This paper will also include guidelines to enable technically limited MANET researchers to design and develop the ToMRobot. It is hoped that this paper achieves its two pronged objectives namely (i) to facilitate other MANET researchers by providing them with a source of reference that eases their decision making for selecting the best and most suitable MANET mobile robots for real mobility in their MANET testbeds (ii) to provide MANET researchers with a prospect of building their own MANET robots that can be applied in their own MANET testbed in the future

Congestion control for named data networking-based wireless ad hoc network

There is lack of complete congestion control solution that is optimized or practical with the Named Data Networking (NDN)-based MANET environment. All the existing suggested solutions are either for general NDN which is not optimized for MANET environment or congestion control solution for incomplete NDN-based MANET. Therefore, we recommend a complete congestion control solution specifically for NDN-based MANET which we call Standbyme Congestion Control or simply called Standbyme. Standbyme design optimized for NDN-based MANET needs in reducing network congestion’s bad effect such as goodput reduction, increment of number of packet loss or increment of delay in NDN-based MANET. Through the testbed experiment, we did by comparing Standbyme with other congestion control methods we selected for comparison, i.e., a practical congestion control for NDN (PCON) congestion control and best effort link reliability protocol (BELRP) congestion control, indicating Standbyme was able to drastically reduce network congestion in NDN-based MANET. Without sacrificing the performance of NDN-based MANET, Standbyme has also reduced bad effect of network congestion through better approach of congestion prevention and reduction in MANET environment

Behavior Pattern Recognition of Game Dragon Nest Using Bloom Filter Method

Dragon Nest is one of Massively Multiplayer Online Role-playing Game (MMORPG online games. It has become the most popular online game played by people around the world. This work observes two examples of the MMORPG online games: the Dragon Nest INA and the Legend DN II. The purpose is to analyze the traffic data of the Dragon Nest to find and discern the patterns of behavior of the Dragon Nest INA and the Legend DN II using Deep Packet Inspection (DPI).  A dataset is constructed by capturing traffic data from the testbed environment. Then feature extraction, feature selection, and visualization are performed during the experiments. Experiment results shows the traffic data of the Dragon Nest INA is higher than the Legend DN II. It is because of the difference in the number of entries in the game. Then, the Bloom filter method is used as a tool to check the existence of a pattern of the Dragon Nest in the dataset. The false positive rate of matching is 0.399576%

The potential use of service-oriented infrastructure framework to enable transparent vertical scalability of cloud computing infrastructure

Cloud computing technology has become familiar to most Internet users. Subsequently, there has been an increased growth in the use of cloud computing, including Infrastructure as a Service (IaaS). To ensure that IaaS can easily meet the growing demand, IaaS providers usually increase the capacity of their facilities in a vertical IaaS increase capability and the capacity for local IaaS amenities such as increasing the number of servers, storage and network bandwidth. However, at the same time, horizontal scalability is sometimes not enough and requires additional strategies to ensure that the large number of IaaS service requests can be met. Therefore, strategies requiring horizontal scalability are more complex than the vertical scalability strategies because they involve the interaction of more than one facility at different service centers. To reduce the complexity of the implementation of the horizontal scalability of the IaaS infrastructures, the use of a technology service oriented infrastructure is recommended to ensure that the interaction between two or more different service centers can be done more simply and easily even though it is likely to involve a wide range of communication technologies and different cloud computing management. This is because the service oriented infrastructure acts as a middle man that translates and processes interactions and protocols of different cloud computing infrastructures without the modification of the complex to ensure horizontal scalability can be run easily and smoothly. This paper presents the potential of using a service-oriented infrastructure framework to enable transparent vertical scalability of cloud computing infrastructures by adapting three projects in this research: SLA@SOI consortium, Open Cloud Computing Interface (OCCI), and OpenStack

Congestion control scheme for energy efficiency of named data networking based mobile ad hoc network

Named Data Networking (NDN) was originally a proposed future Internet Protocol to solve content sharing and distribution problems on the Internet. At the same time, NDN has a lot of advantages as a communication protocol in Mobile Ad hoc Network (MANET). However, network congestion is a major cause of energy wastage in NDN-based MANET like traditional MANET. Therefore, an efficient congestion control scheme is proposed, consisting of three different sub-scheme to tackle three different network congestion problems that resulting energy wastage. First, the Hopby- Hop Congestion Detection schemewas developed to deal with inaccurate congestion detection due to false positive and false negative errors. Secondly, the Preventive and Reactive Congestion Avoidance scheme was designed to handle intermittent bandwidth limit fluctuation, leading to a high congestion rate. Finally, the Congestion-Aware Load Balancing scheme was established to handle unbalanced shared bandwidth, leading to a high congestion rate. Performance comparison was conducted using testbed between proposed congestion control scheme with two existing congestion control solutions in NDN forwarder daemon (NFD), namely, Practical Congestion Control scheme for NDN (PCON) and Best Effort Link Reliability Protocol (BELRP). The performance of these schemes was measured and analysed using suitable metrics such as congestion detection rate, goodput and energy consumption of consumer nodes. In the baseline topology scenario, the proposed congestion control scheme had a better congestion detection accuracy with a congestion detection rate as low as 42.91%, compared to PCON (69.68%) and BELRP (43.37%). The proposed congestion control scheme also produced a better goodput of 3.39 kbps, compared to PCON (1.17 kbps) and BELRP (0.94 kbps) in the random mobility scenario. More importantly, in the random mobility scenario, the energy consumption of consumer nodes when using the proposed congestion control scheme was lower at 1445.7 joules, compared to PCON (4082.83 joules) and BELRP (5214 joules). In conclusion, the proposed congestion control scheme outperformed the aforementioned existing congestion control solutions

Mobility in mobile ad-hoc network testbed using robot: Technical and critical review

Recently, MANET (Mobile Ad Hoc Network) researchers have shown increased interest in using mobile robot technology for their testbed platforms. Despite the existence of review papers that discuss the usage of mobile robot technology pertaining to a MANET testbed from the perspective of a MANET researcher, said findings are rather lacklustre as it is not the sole purpose of said reviews. Hence, this review aims to comprehensively discuss and analyse MANET testbeds that were facilitated with mobile robot technology for previous undertaken research. To enable readers to keep abreast with mobile robot technology used in previous research, whilst presenting the advantages and disadvantages of said methods, this review will first superficially discuss prior robot based MANET testbed facilities, before presenting technical analysis overview and critical analysis. Additionally, suggestions to heighten mobility mechanisms by using mobile robots to be more practical, easy and inexpensive are also included in this paper. The technical and critical content of this review is expected to be a source of reference for other MANET researchers interested in the most suitable mobile robots to ensure real mobility in their MANET testbeds