Browsing by Author "Aina, Folayo"
Now showing 1 - 5 of 5
Results Per Page
Sort Options
Item Bandwidth Estimation for Admission Control in MANET: Review and Conceptual MANET Admission Control Framework(2019) Aina, Folayo; Yousef, Sufian; Osanaiye, Opeyemi; Ruskin, AngliaMobile ad-hoc network (MANET) is one of the main technologies for the next generation wireless networking because of the positive impact it poses over other wireless networks having undergone rapid progress, which has inspired many applications. However, providing quality of service (QoS) assurance to MANET is hard because of the unpredictable nature of the wireless medium, contention problem amongst the channel, mobility problem and lack of central co-ordinator. Admission control is therefore seen as one of the methods for providing QoS. Admission control aim at estimating the network resource states and decides whether to admit a session without assuring more resources bandwidth space than what is available to avoid the violation of any rules that has been previously made. Some recent solution considered the MAC layer back-off impact due to collision as well as the non-synchronization between the sender and receiver when estimating the available bandwidth. None of the previous work proposed a technique that sends a HELLO packet to its one-hop neighbours which further aggregates to the rest of the nodes to retrieve the available bandwidth on a carrier sensing region, in order to limit the impact of additional overhead of the carrier sensing multiple access with collision avoidance (CSMA/CA). Also, none of the existing solution has properly addressed the channel idle time dependency between the sending node and the receiving node by differentiating the BUSY state from the SENSE BUSY states and the IDLE state caused by an empty queue. This paper, therefore reviews the bandwidth estimation techniques for admission control for MANET. The bandwidth estimation techniques for admission control have been categorized into two: active and passive estimation. An outline of each technique has been discussed as well as the proposed conceptual framework. The contribution as identified in this research work is the proposal of conceptual framework that adapts the following into the bandwidth estimation for admission control in MANET: (1) HELLO packet advertisement to one hop which further aggregates to retrieve the available bandwidth on the carrier sensing region, (2) Considering the channel idle time measurement by differentiating the channel busy state from channel sensing state and regarding an empty queue as an idle state. Future research directions are also outlined.Item Comparison of Vertical Handover Decision-Based Techniques in Heterogeneous Networks(Int. J. Communications, Network and System Sciences, 2018) Edia, Adada; Osanaiye, Opeyemi; Aina, Folayo; Ogundile, OlayinkaIndustry leaders are currently setting out standards for 5G networks projected for 2020 or even sooner. Future generation networks will be heterogeneous in nature as no single network type will be capable of optimally meeting all the rapid changes in customer demands. With the advent of multi-homed devices and heterogeneous network (HetNet) solution, great concerns arise in the processes involved for successful handover. Active calls that get dropped or cases of poor quality of service experienced by mobile users can be attributed to the phenomenon of delayed handover (HO) or an outright case of an un-successful handover procedure. This work compares multiple criteria hand-over basis to its traditional single relative signal strength (RSS) base counter-part. It analyses the performance of a fuzzy-based VHO algorithm scheme in a Wi-Fi, WiMAX, UMTS and LTE integrated network using OMNeT++ event simulator. The loose coupling network architecture is adopted and simulation results analysed for the two major categories of handover; the multiple and single criteria. Results obtained show a better overall through-put, better call dropped rate and shorter handover time for the multiple crite-ria based decision method as compared to the single criteria based technique. This work also highlights current research trends, challenges of seamless handover and initiatives for Next Generation HetNet.Item FEATURE SELECTION FOR INTRUSION DETECTION SYSTEM IN A CLUSTER-BASED HETEROGENEOUS WIRELESS SENSOR NETWORK(2019) Osanaiye, Opeyemi; Ogundile, Olayinka; Aina, Folayo; Periola, AyodeleWireless sensor network (WSN) has become one of the most promising networking solutions with exciting new applications for the near future. Notwithstanding the resource constrain of WSNs, it has continued to enjoy widespread deployment. Security in WSN, however, remains an ongoing research trend as the deployed sensor nodes (SNs) are susceptible to various security challenges due to its architecture, hostile deployment environment and insecure routing protocols. In this work, we propose a feature selection method by combining three filter methods; Gain ratio, Chi-squared and ReliefF (triple-filter) in a cluster-based heterogeneous WSN prior to classification. This will increase the classification accuracy and reduce system complexity by extracting 14 important features from the 41 original features in the dataset. An intrusion detection benchmark dataset, NSL-KDD, is used for performance evaluation by considering detection rate, accuracy and the false alarm rate. Results obtained show that our proposed method can effectively reduce the number of features with a high classification accuracy and detection rate in comparison with other filter methods. In addition, this proposed feature selection method tends to reduce the total energy consumed by SNs during intrusion detection as compared with other filter selection methods, thereby extending the network lifetime and functionality for a reasonable period.Item RAAC: A BANDWIDTH ESTIMATION TECHNIQUE FOR ADMISSION CONTROL IN MANET(University of Niš, Serbia |, 2019) Aina, Folayo; Yousef, Sufian; Osanaiye, OpeyemiItem RAACM: Resource Allocation for Admission Control in MANET(International Journal of Wireless Information Networks, 2019) Aina, Folayo; ousef, Sufian; Osanaiye, OpeyemiAs wireless mobile network becomes widespread, the demand for user application is higher and the services provided by the wired application is expected to be available in the wireless medium. Therefore, the users of these applications will expect the same quality of service (QoS) obtained in wired network. Providing a reliable QoS in wireless medium, especially mobile ad-hoc network (MANET), is quite challenging and remains an ongoing research trend. The key issue of MANET lies around the ability to accurately predict the needed and available resources to avoid interference with ongoing traffic. An essential solution to the issues posed by MANET is the introduction of an admission control component for a guaranteed QoS. Admission control helps to control the usage of resources when an additional service is requested. For an admission decision to be made for a new flow, the expected bandwidth consumption must be correctly predicted prior to admission, notwithstanding the fact that wireless medium is shared and nodes contends among themselves to access the medium. The novelty of this research work is the proposed resource allocation for admission control in MANET (RAACM) solution which is an admission control scheme that estimates the available bandwidth needed within a network using a robust and accurate resource estimation technique. Furthermore, the various factors that must be considered for an effective estimation were highlighted and simulations were carried out. Results obtained show that our proposed scheme for MANET outperforms existing state-of-the-art approaches for admission control with bandwidth estimation. Part of this success is associated with its assumption about the idle channel period, which prevents the overestimation and underestimation of the existing bandwidth measurement. RAACM considers the dependency of two adjacent node idle channel occupancy by differentiating the networks BUSY state from the SENSE BUSY state and the IDLE state caused by an empty queue to give a better estimation.