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Challenges in deployment of 5GGCRNs for IoTs
Gohar Mumtaz,Muhammad Waseem Iqbal,Muhammad Aqeel,Arif Wicaksono Septyanto 한국차세대컴퓨팅학회 2021 한국차세대컴퓨팅학회 학술대회 Vol.2021 No.11
Latest development, expansion, and organization in the field of Internet of things (IoT) are revolutionizing the day-byday life of individuals. To fulfill the extraordinary client needs, the 5G Networks are developing, and are significant for ceaseless development of IoT networks. The unfurling cellular innovation has brought the energy utilization up in mobile Networks with the carbon impression flooding to disturbing rates. This is causing an unfriendly impact on the climate and human wellbeing. The other challenge is lessening the general network dormancy and expanding throughput without forfeiting unwavering quality. One achievable option is conjunction of networks working on various frequencies. Notwithstanding, information data transmission backing, and range accessibility are the significant difficulties. Consequently, cognitive radio networks (CRN) are the possible solution to oblige every one of these difficulties for the concurrence deployment of 5G green cognitive radio networks for IoTs.
Network-Based Distributed Mobility Control in Localized Mobile LISP Networks
Gohar, Moneeb,Seok Joo Koh IEEE 2012 IEEE COMMUNICATIONS LETTERS Vol.16 No.1
<P>In Locator-Identifier Separation Protocol (LISP), the existing mobility control scheme is based on a centralized approach, in which the Map Server is used as a mobility anchor. However, such a centralized scheme has some limitations, including traffic overhead at central server, service degradation by a single point of failure, and larger handover delay. In this Letter, we propose a network-based distributed mobility control in localized mobile LISP networks. From numerical analysis, it is shown that the proposed distributed scheme can provide better performance than the existing centralized scheme in terms of the signaling loads for binding update/query and the handover delay.</P>
A Network-Based Handover Scheme in HIP-Based Mobile Networks
Gohar, Moneeb,Koh, Seok-Joo Korea Information Processing Society 2013 Journal of information processing systems Vol.9 No.4
In the Host Identity Protocol (HIP), the existing host-based handover scheme tends to induce large handover delays and packet loss rates. To deal with this problem, we are proposing a network-based handover scheme for HIP in the mobile networks, in which the access routers of the mobile node will establish a handover tunnel and will perform the route optimization for data transmission. We also discuss how to extend the HIP Update message to use the proposed handover scheme. From ns-2 simulations, we can see that the proposed handover scheme can significantly reduce the handover delay and packet losses during handover, as compared to the existing handover schemes.
Distributed Mobility Management in 6LoWPAN-Based Wireless Sensor Networks
Gohar, Moneeb,Choi, Jin-Ghoo,Koh, Seok-Joo,Naseer, Kashif,Jabbar, Sohail Taylor & Francis 2015 INTERNATIONAL JOURNAL OF DISTRIBUTED SENSOR NETWOR Vol.2015 No.-
<P>In 6LoWPAN networks, several mobility management schemes have been proposed based on Mobile IPv6 (MIPv6) and Proxy Mobile IPv6 (PMIPv6). However, the existing schemes are centralized, and thus they have many serious drawbacks such as nonoptimal data route, injection of unwanted data traffics into core networks, increased cost of network engineering, and large registration and handover delays. To overcome these limitations, we propose new distributed mobility management schemes for 6LoWPAN networks. In the proposed schemes, Home Agent (HA), Local Mobility Anchor (LMA), and Mobile Access Gateway (MAG) functions are implemented in 6LoWPAN gateways, and the handover operations are performed directly between two neighboring 6LoWPAN gateways. By numerical analysis, we show that the proposed distributed schemes can significantly reduce the registration and handover delays, compared to the existing centralized mobility schemes.</P>
Gohar Basem,Larivière Michel,Lightfoot Nancy,Larivière Céline,Wenghofer Elizabeth,Nowrouzi-kia Behdin 한국산업안전보건공단 산업안전보건연구원 2021 Safety and health at work Vol.12 No.4
Background: Sickness absenteeism is an area of concern in nursing and is more concerning given the recent impacts of the COVID-19 pandemic on healthcare. This study is one of two meta-analyses that examined sickness absenteeism in nursing. In this study, we examined demographic, lifestyle, and physical health predictors. Methods: We reviewed five databases (CINAHL, ProQuest Allied, ProQuest database theses, PsycINFO, and PubMed) for our search. We registered the systematic review (CRD de-identified) and followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Additionally, we used the Population/Intervention/Comparison/Outcome Tool to improve our searches. Results: Following quality testing, 17 articles were used for quantitative synthesis. Female employees were at higher risks of sickness absenteeism than their male counterparts (OR = 1.73; 95% CI: 1.33-2.25). Nursing staff who rated their health as poor had a greater likelihood of experiencing sickness absence (OR = 1.38; 95% CI: 1.19-1.60). Also, previous sick leave predicted future leaves (OR = 3.35; 95% CI: 1.37-8.19). Moreover, experiencing musculoskeletal pain (OR = 2.41 95% CI: 1.77-3.27) increased the likelihood of sickness absence with greater odds when it is a back pain (OR = 3.05; 95% CI: 1.66-5.62). Increased age, physical activity, and sleep were not associated with sick leave. Conclusion: Several variables were statistically associated with the occurrence of sickness absenteeism. One primary concern is the limited research in this area despite alarming rates of sick leave in healthcare. More research is required to identify predictors of sickness absence, and thereby, implement preventative measures.
Cluster-Based Device Mobility Management in Named Data Networking for Vehicular Networks
Gohar, Moneeb,Khan, Naveed,Ahmad, Awais,Najam-Ul-Islam, Muhammad,Sarwar, Shahzad,Koh, Seok-Joo Hindawi Limited 2018 Mobile information systems Vol.2018 No.-
<P>Named data networking (NDN) is an emerging technology. It was designed to eliminate the dependency of IP addresses in the hourglass model. Mobility is a key concern of the modern Internet architecture, even though the NDN architecture has solved the consumer mobility. That is, the consumer can rerequest the desired data contents, while the producer mobility remains as an issue in the NDN architecture. This paper focuses on the issue of producer mobility and proposes the cluster-based device mobility management scheme, which uses the cluster heads to solve the producer mobility issue in NDN. In the proposed scheme, a cluster head has all information of its attached devices. A cluster head updates the routes, when a device moves to the new access router by sending all the attachment information. The proposed scheme is evaluated and compared with the existing scheme by using the <I>ndnSIM</I> simulation. From the results, we see that the proposed scheme can decrease the numbers of interest packets in the network, compared with the existing scheme.</P>