Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wir... more Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wireless networks. It has become necessary therefore, to consider mobility issues and Quality of Service (QoS) provisioning to users when designing handover algorithm for heterogeneous wireless networks. The proposal is an approach for selecting a network based fuzzy logic and derived by Analytic Hierarchy Process (AHP) method. The work considered Power Level, Cost and Bandwidth as metrics for reducing the handoff execution, while prolonging the battery life span of the mobile equipment. Consequently, a Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method was used in ranking the networks availability, the result of which demonstrates improved system performance. It was evident that the method proposed when compared to other methods has demonstrated an edge over other methods with the highest relative standard deviation in terms of handoff priority and probability of minimizing handoff failure.
2016 International Conference on Advances in Electrical, Electronic and Systems Engineering (ICAEES), 2016
The exciting moments for cellular networks is the currently on-going deployment of fourth generat... more The exciting moments for cellular networks is the currently on-going deployment of fourth generation (4G) networks offering services to customers worldwide. The key asset for users and operators alike is the support 5G networks continue to receive towards improved communication systems. This paper addresses issues of integrated resource scheduling within cellular networks and proposing an improvement of the proportional fairness algorithm (NIPFA) to examine the upcoming 5G networks. The impact of heterogeneity in cellular networks is being evaluated in a scenario combining macro and micro-coverage. Findings show how the versatility of heterogeneous networks help macrocells retain an edge for general-purpose downloading, while microcell produce an appealing solution for viral content.
The accessibility and rapid growth of data with the conspicuous rise in hardware technologies hav... more The accessibility and rapid growth of data with the conspicuous rise in hardware technologies have led to the development of new studies in distributed and deep learning. This work reports the prediction of breastfeeding practice of a child using machine and deep learning algorithms. Despite that exclusive breastfeeding reduces the child mortality rate caused by pneumonia and diarrhea and other benefits attached to it the percentage of mothers who practice it in Nigeria still fall short to 29% in 2018 according to Nigeria Demographic Health Survey (NDHS) compare to the global target of 70% by 2030. The aim of the study is to develop a model for the prediction of breastfeeding practice in Nigeria. This study adopted Sample, Explore, Modify, Model and Access (SEMMA) data mining methodology using 2018 NDHS dataset. Experiments were performed with ML algorithms (RF, J48, JRIP, and SVM) built with WEKA software as well as with DNN algorithm using python. Some control parameters were appl...
2019 15th International Conference on Electronics, Computer and Computation (ICECCO), 2019
The explosion of mobile data usage due to the increase of mobile subscribers and emergence of new... more The explosion of mobile data usage due to the increase of mobile subscribers and emergence of new applications such as mobile TV and online gaming, which requires high quality of service is the driving force for developing Long-Term Evolution (LTE) mobile networks by 3GPP. Service providers are migrating to this network due to its promising quality of service to assist them meet the growing end-user demand for more bandwidth, high security and faster connectivity. Service providers in Nigeria claimed to have rolled out 4G (LTE) nationwide, yet mobile subscribers are still unhappy with network operators over slow network connection and poor quality of service. Base on this motive, OMNeT++ simulator was used to evaluate performance of LTE networks by varying number of user equipment (UE) connected to evolved Node Base station (eNB), distance of UE from eNB and mobility speed of UE. Performance metrics used are throughput, end-to-end delay and packet loss. We observed that the LTE network is capable of providing good quality voice call. Though, its quality is affected with increasing distances between UE and eNodeB, number of connected users, and mobility speed of user.
Feature selection is a technique used to select an optimal feature subset from the original input... more Feature selection is a technique used to select an optimal feature subset from the original input features according to a specific criterion. The criterion is often formulated as an objective function that finds which features are most appropriate for some tasks at hand. The reason why it is interesting to find a subset of features is because that it always easier to solve a problem in a lower dimension. This helps in understanding the nonlinear mapping between input and output variables. This paper reviewed the basic Feature Selection Techniques for Software Defect Prediction Model and their domain applications. The Subsets selection are categorized into three distinct models and are discussed in a concise form to provide young researchers with the general methods of Subset Selection. Support Vector Machine with Recursive Feature Elimination for both Logistic Regression and Random Forest was introduced to evaluate the performance between filter, wrapper, and embedded feature select...
Vertical handover decision (VHD) is a complex strategy in heterogeneous wireless networks because... more Vertical handover decision (VHD) is a complex strategy in heterogeneous wireless networks because of its significance on network application and performance. The mechanism adopted for the vertical handover utilizes the “break – before – make” phenomenon. However, issue of network availability and the choice of the best available network may be an illusion as the mechanism is subjected to many difficulties in handover decisions, which results in packet drop, high latency and poor network performance. This paper presents an intelligent network selection during vertical handover capable of resolving VHO problems of bandwidth delay (BD) or mismatch and premature timeout by introducing improved TCP proxy in two sublayers in the radio link layer. The proposed sub-layer interworking network selection mechanism (SLIM) adopts integrated coupling architecture at layer 2 of the eNodeB and UE to provide a smooth handover between 3GPP and WLAN networks. The results obtained demonstrate it adapta...
Abstract Cell Clustering has been identified as one of the technique and mechanism for cooperativ... more Abstract Cell Clustering has been identified as one of the technique and mechanism for cooperative communication used in Long Term Evolution (LTE). However, the proposed mechanism is subjected to many difficulties in cooperative decisions. This paper gives an ...
Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wir... more Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wireless networks. It has become necessary therefore, to consider mobility issues and Quality of Service (QoS) provisioning to users when designing handover algorithm for heterogeneous wireless networks. The proposal is an approach for selecting a network based fuzzy logic and derived by Analytic Hierarchy Process (AHP) method. The work considered Power Level, Cost and Bandwidth as metrics for reducing the handoff execution, while prolonging the battery life span of the mobile equipment. Consequently, a Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method was used in ranking the networks availability, the result of which demonstrates improved system performance. It was evident that the method proposed when compared to other methods has demonstrated an edge over other methods with the highest relative standard deviation in terms of handoff priority and probability of minimizing handoff failure.
One of the serious challenges of wireless mobile ad-hoc networks is the inability to guarantee li... more One of the serious challenges of wireless mobile ad-hoc networks is the inability to guarantee link quality of service (QoS) due to the frequent changing topology nature. To remedy this effect, this paper proposes a dynamic multipath routing protocol that is capable of choosing a better path for fulfilling different data traffic requirements. A multiple-path metrics-using weighted cost function, available bandwidth estimation and data-driven expected transmission (DDET) count-are adopted in providing the needed QoS for different traffics. The obtained results from simulations demonstrate the new method's ability to achieve better round trip time and packet delivery ratio as perceived by the existing protocols. This work has demonstrated that an improved throughput and reduced end-to-end delay could be achieved using the multipath metrics selections to provide QoS for various traffics in mobile ad-hoc networks.
Journal of Communications Technology, Electronics and Computer Science
The importance of network selection for wireless networks, is to facilitate users with various pe... more The importance of network selection for wireless networks, is to facilitate users with various personal wireless devices to access their desired services via a range of available radio access networks. The inability of these networks to provide broadband data service applications to users poses a serious challenge in the wireless environment. Network Optimization has therefore become necessary, so as to accommodate the increasing number of users’ service application demands while maintaining the required quality of services. To achieve that, the need to incorporate intelligent and fast mechanism as a solution to select the best value network for the user arises. This paper provides an intelligent network selection strategy based on the user- and network-valued metrics to suit their preferences when communicating in multi-access environment. A user-driven network selection strategy that employs Multi-Access Service Selection Vertical Handover Decision Algorithm (MASS-VHDA) via three ...
Journal of Communications Technology, Electronics and Computer Science, 2016
In wireless systems, unnecessary signal degradation are caused by spurious timeouts from highly v... more In wireless systems, unnecessary signal degradation are caused by spurious timeouts from highly variable round-trip times (RTTs) for transmission control protocol (TCP). This paper proposes two methods of improving TCP throughput in wireless networks. Selecting a threshold higher than standard for retransmission timeout (RTO) and use of select-N-repeat (SNR) and trace-N-retransmit (TNR) as retransmission policies upon packet timeout are the two techniques adopted in this study. Simulations reveals that the former method helps reduce timeouts and provides relative throughput gain in a simulated network environment. However in the later method, TNR was found to improve throughput gain by about 8% over the SNR policy when packets at the receiver end arrive out-of-order.
ABSTRACT With the increasing deployment of a variety of wireless access networks, wireless device... more ABSTRACT With the increasing deployment of a variety of wireless access networks, wireless devices face the challenge of selecting the most suitable network from a set of available access networks. Some of the weighty issues in 4G wireless networks are fastness and seamlessness in handover process. This paper therefore, proposes a handover technique based on movement prediction in wireless mobile (WiMAX and LTE - Advanced) environment. The technique enables the system to predict signal quality between the mobile User Equipment (UE) and eNodeB stations/access points (APs) in two different networks. Prediction is achieved using dynamic regressive integrated moving average (DRIMA) model by keeping track of the signal strength of mobile users. With the help of the prediction, layer-3 handover activities are able to occur prior to layer-2 handover, and therefore, total handover latency can be reduced. This demonstrates that the proposed method predicts the future signal level accurately and reduces the total handover latency. (C) 2013 The Authors. Published by Elsevier Ltd.
The emerging Long Term Evolution (LTE) network standard utilizes the “break - before - make” mech... more The emerging Long Term Evolution (LTE) network standard utilizes the “break - before - make” mechanism in the downlink handover. However, the mechanism is subjected to many difficulties in handover decisions, thus resulting in low throughput and high latency. This paper overview mobility management and downlink handover procedure being adopted in the LTE/LTE-Advanced downlink. A new proposed Multi-Layer Network Selection
ABSTRACT The integration of wireless worldwide interoperability for microwave access network (Wi-... more ABSTRACT The integration of wireless worldwide interoperability for microwave access network (Wi-MAX and Long Term Evolution (LTE) in an all IP based heterogeneous networks that require seamless mobility is predicated on enabling the connection and retrieval of data by a mobile user not mindful of the medium or technology used. This phenomenon facilitates freedom of movement while maintaining service continuity. However, the interoperability between multiple access technologies should be able to realize the vision of 4G technology and beyond to allow mobile user equipment (UE) to roam freely when intersecting the cell-boundaries of different network platforms without losing the service. To achieve such task, a proposed mobility management system designed to detect conditions of the network early enough and effect changes to handover parameters while maintaining the network connectivity is being highlighted. The proposed system investigates how the signal strength threshold (RSSTh) influences handover decision for a prioritized network with regards to distance and velocity. Computer simulation based on a designed algorithm for vertical handover optimization is being implemented to trigger the inter-radio access technology (RAT) handover for evaluating the performance of next generation wireless network systems. The results show that the prioritized network stand to be the preferred network as the UE is connected to it most of the time.
2013 IEEE International Conference on Space Science and Communication (IconSpace), 2013
ABSTRACT Vertical handover predictions require intelligent algorithm to coordinate heterogeneous ... more ABSTRACT Vertical handover predictions require intelligent algorithm to coordinate heterogeneous access technologies in the 4G-communication system. Although much attention is being given to the handover architecture in most of the literatures, little is mentioned about estimating user movement and prediction for improving the reliability of the access of the underlying system architecture. In an effort to reduce the data loss probability, the Generic Prediction Algorithm (GPA) adopts specimens of received signal strength (RSS) as augment to compute the predictive received signal strength. Received signal strength (RSS), bandwidth (BW), and service cost (SC) are three QoS metrics considered as input parameters for Quantitative Decision Algorithm (QDA) of the divergent networks. The comparison of values of QDA of the networks is made to improve the vertical handover decision. A result of simulation shows that the algorithm proposed produces a better network performance in terms of link reliability.
Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wir... more Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wireless networks. It has become necessary therefore, to consider mobility issues and Quality of Service (QoS) provisioning to users when designing handover algorithm for heterogeneous wireless networks. The proposal is an approach for selecting a network based fuzzy logic and derived by Analytic Hierarchy Process (AHP) method. The work considered Power Level, Cost and Bandwidth as metrics for reducing the handoff execution, while prolonging the battery life span of the mobile equipment. Consequently, a Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method was used in ranking the networks availability, the result of which demonstrates improved system performance. It was evident that the method proposed when compared to other methods has demonstrated an edge over other methods with the highest relative standard deviation in terms of handoff priority and probability of minimizing handoff failure.
2016 International Conference on Advances in Electrical, Electronic and Systems Engineering (ICAEES), 2016
The exciting moments for cellular networks is the currently on-going deployment of fourth generat... more The exciting moments for cellular networks is the currently on-going deployment of fourth generation (4G) networks offering services to customers worldwide. The key asset for users and operators alike is the support 5G networks continue to receive towards improved communication systems. This paper addresses issues of integrated resource scheduling within cellular networks and proposing an improvement of the proportional fairness algorithm (NIPFA) to examine the upcoming 5G networks. The impact of heterogeneity in cellular networks is being evaluated in a scenario combining macro and micro-coverage. Findings show how the versatility of heterogeneous networks help macrocells retain an edge for general-purpose downloading, while microcell produce an appealing solution for viral content.
The accessibility and rapid growth of data with the conspicuous rise in hardware technologies hav... more The accessibility and rapid growth of data with the conspicuous rise in hardware technologies have led to the development of new studies in distributed and deep learning. This work reports the prediction of breastfeeding practice of a child using machine and deep learning algorithms. Despite that exclusive breastfeeding reduces the child mortality rate caused by pneumonia and diarrhea and other benefits attached to it the percentage of mothers who practice it in Nigeria still fall short to 29% in 2018 according to Nigeria Demographic Health Survey (NDHS) compare to the global target of 70% by 2030. The aim of the study is to develop a model for the prediction of breastfeeding practice in Nigeria. This study adopted Sample, Explore, Modify, Model and Access (SEMMA) data mining methodology using 2018 NDHS dataset. Experiments were performed with ML algorithms (RF, J48, JRIP, and SVM) built with WEKA software as well as with DNN algorithm using python. Some control parameters were appl...
2019 15th International Conference on Electronics, Computer and Computation (ICECCO), 2019
The explosion of mobile data usage due to the increase of mobile subscribers and emergence of new... more The explosion of mobile data usage due to the increase of mobile subscribers and emergence of new applications such as mobile TV and online gaming, which requires high quality of service is the driving force for developing Long-Term Evolution (LTE) mobile networks by 3GPP. Service providers are migrating to this network due to its promising quality of service to assist them meet the growing end-user demand for more bandwidth, high security and faster connectivity. Service providers in Nigeria claimed to have rolled out 4G (LTE) nationwide, yet mobile subscribers are still unhappy with network operators over slow network connection and poor quality of service. Base on this motive, OMNeT++ simulator was used to evaluate performance of LTE networks by varying number of user equipment (UE) connected to evolved Node Base station (eNB), distance of UE from eNB and mobility speed of UE. Performance metrics used are throughput, end-to-end delay and packet loss. We observed that the LTE network is capable of providing good quality voice call. Though, its quality is affected with increasing distances between UE and eNodeB, number of connected users, and mobility speed of user.
Feature selection is a technique used to select an optimal feature subset from the original input... more Feature selection is a technique used to select an optimal feature subset from the original input features according to a specific criterion. The criterion is often formulated as an objective function that finds which features are most appropriate for some tasks at hand. The reason why it is interesting to find a subset of features is because that it always easier to solve a problem in a lower dimension. This helps in understanding the nonlinear mapping between input and output variables. This paper reviewed the basic Feature Selection Techniques for Software Defect Prediction Model and their domain applications. The Subsets selection are categorized into three distinct models and are discussed in a concise form to provide young researchers with the general methods of Subset Selection. Support Vector Machine with Recursive Feature Elimination for both Logistic Regression and Random Forest was introduced to evaluate the performance between filter, wrapper, and embedded feature select...
Vertical handover decision (VHD) is a complex strategy in heterogeneous wireless networks because... more Vertical handover decision (VHD) is a complex strategy in heterogeneous wireless networks because of its significance on network application and performance. The mechanism adopted for the vertical handover utilizes the “break – before – make” phenomenon. However, issue of network availability and the choice of the best available network may be an illusion as the mechanism is subjected to many difficulties in handover decisions, which results in packet drop, high latency and poor network performance. This paper presents an intelligent network selection during vertical handover capable of resolving VHO problems of bandwidth delay (BD) or mismatch and premature timeout by introducing improved TCP proxy in two sublayers in the radio link layer. The proposed sub-layer interworking network selection mechanism (SLIM) adopts integrated coupling architecture at layer 2 of the eNodeB and UE to provide a smooth handover between 3GPP and WLAN networks. The results obtained demonstrate it adapta...
Abstract Cell Clustering has been identified as one of the technique and mechanism for cooperativ... more Abstract Cell Clustering has been identified as one of the technique and mechanism for cooperative communication used in Long Term Evolution (LTE). However, the proposed mechanism is subjected to many difficulties in cooperative decisions. This paper gives an ...
Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wir... more Handover decision is one of the enhancement mechanisms that plays vital role in heterogeneous wireless networks. It has become necessary therefore, to consider mobility issues and Quality of Service (QoS) provisioning to users when designing handover algorithm for heterogeneous wireless networks. The proposal is an approach for selecting a network based fuzzy logic and derived by Analytic Hierarchy Process (AHP) method. The work considered Power Level, Cost and Bandwidth as metrics for reducing the handoff execution, while prolonging the battery life span of the mobile equipment. Consequently, a Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) method was used in ranking the networks availability, the result of which demonstrates improved system performance. It was evident that the method proposed when compared to other methods has demonstrated an edge over other methods with the highest relative standard deviation in terms of handoff priority and probability of minimizing handoff failure.
One of the serious challenges of wireless mobile ad-hoc networks is the inability to guarantee li... more One of the serious challenges of wireless mobile ad-hoc networks is the inability to guarantee link quality of service (QoS) due to the frequent changing topology nature. To remedy this effect, this paper proposes a dynamic multipath routing protocol that is capable of choosing a better path for fulfilling different data traffic requirements. A multiple-path metrics-using weighted cost function, available bandwidth estimation and data-driven expected transmission (DDET) count-are adopted in providing the needed QoS for different traffics. The obtained results from simulations demonstrate the new method's ability to achieve better round trip time and packet delivery ratio as perceived by the existing protocols. This work has demonstrated that an improved throughput and reduced end-to-end delay could be achieved using the multipath metrics selections to provide QoS for various traffics in mobile ad-hoc networks.
Journal of Communications Technology, Electronics and Computer Science
The importance of network selection for wireless networks, is to facilitate users with various pe... more The importance of network selection for wireless networks, is to facilitate users with various personal wireless devices to access their desired services via a range of available radio access networks. The inability of these networks to provide broadband data service applications to users poses a serious challenge in the wireless environment. Network Optimization has therefore become necessary, so as to accommodate the increasing number of users’ service application demands while maintaining the required quality of services. To achieve that, the need to incorporate intelligent and fast mechanism as a solution to select the best value network for the user arises. This paper provides an intelligent network selection strategy based on the user- and network-valued metrics to suit their preferences when communicating in multi-access environment. A user-driven network selection strategy that employs Multi-Access Service Selection Vertical Handover Decision Algorithm (MASS-VHDA) via three ...
Journal of Communications Technology, Electronics and Computer Science, 2016
In wireless systems, unnecessary signal degradation are caused by spurious timeouts from highly v... more In wireless systems, unnecessary signal degradation are caused by spurious timeouts from highly variable round-trip times (RTTs) for transmission control protocol (TCP). This paper proposes two methods of improving TCP throughput in wireless networks. Selecting a threshold higher than standard for retransmission timeout (RTO) and use of select-N-repeat (SNR) and trace-N-retransmit (TNR) as retransmission policies upon packet timeout are the two techniques adopted in this study. Simulations reveals that the former method helps reduce timeouts and provides relative throughput gain in a simulated network environment. However in the later method, TNR was found to improve throughput gain by about 8% over the SNR policy when packets at the receiver end arrive out-of-order.
ABSTRACT With the increasing deployment of a variety of wireless access networks, wireless device... more ABSTRACT With the increasing deployment of a variety of wireless access networks, wireless devices face the challenge of selecting the most suitable network from a set of available access networks. Some of the weighty issues in 4G wireless networks are fastness and seamlessness in handover process. This paper therefore, proposes a handover technique based on movement prediction in wireless mobile (WiMAX and LTE - Advanced) environment. The technique enables the system to predict signal quality between the mobile User Equipment (UE) and eNodeB stations/access points (APs) in two different networks. Prediction is achieved using dynamic regressive integrated moving average (DRIMA) model by keeping track of the signal strength of mobile users. With the help of the prediction, layer-3 handover activities are able to occur prior to layer-2 handover, and therefore, total handover latency can be reduced. This demonstrates that the proposed method predicts the future signal level accurately and reduces the total handover latency. (C) 2013 The Authors. Published by Elsevier Ltd.
The emerging Long Term Evolution (LTE) network standard utilizes the “break - before - make” mech... more The emerging Long Term Evolution (LTE) network standard utilizes the “break - before - make” mechanism in the downlink handover. However, the mechanism is subjected to many difficulties in handover decisions, thus resulting in low throughput and high latency. This paper overview mobility management and downlink handover procedure being adopted in the LTE/LTE-Advanced downlink. A new proposed Multi-Layer Network Selection
ABSTRACT The integration of wireless worldwide interoperability for microwave access network (Wi-... more ABSTRACT The integration of wireless worldwide interoperability for microwave access network (Wi-MAX and Long Term Evolution (LTE) in an all IP based heterogeneous networks that require seamless mobility is predicated on enabling the connection and retrieval of data by a mobile user not mindful of the medium or technology used. This phenomenon facilitates freedom of movement while maintaining service continuity. However, the interoperability between multiple access technologies should be able to realize the vision of 4G technology and beyond to allow mobile user equipment (UE) to roam freely when intersecting the cell-boundaries of different network platforms without losing the service. To achieve such task, a proposed mobility management system designed to detect conditions of the network early enough and effect changes to handover parameters while maintaining the network connectivity is being highlighted. The proposed system investigates how the signal strength threshold (RSSTh) influences handover decision for a prioritized network with regards to distance and velocity. Computer simulation based on a designed algorithm for vertical handover optimization is being implemented to trigger the inter-radio access technology (RAT) handover for evaluating the performance of next generation wireless network systems. The results show that the prioritized network stand to be the preferred network as the UE is connected to it most of the time.
2013 IEEE International Conference on Space Science and Communication (IconSpace), 2013
ABSTRACT Vertical handover predictions require intelligent algorithm to coordinate heterogeneous ... more ABSTRACT Vertical handover predictions require intelligent algorithm to coordinate heterogeneous access technologies in the 4G-communication system. Although much attention is being given to the handover architecture in most of the literatures, little is mentioned about estimating user movement and prediction for improving the reliability of the access of the underlying system architecture. In an effort to reduce the data loss probability, the Generic Prediction Algorithm (GPA) adopts specimens of received signal strength (RSS) as augment to compute the predictive received signal strength. Received signal strength (RSS), bandwidth (BW), and service cost (SC) are three QoS metrics considered as input parameters for Quantitative Decision Algorithm (QDA) of the divergent networks. The comparison of values of QDA of the networks is made to improve the vertical handover decision. A result of simulation shows that the algorithm proposed produces a better network performance in terms of link reliability.
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