Browsing by Author "Idachaba, Francis"

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    The Journey of 5G Mobile Communication Networks
    (faculty of Communication and Information Sciences, University of Ilorin, Kwara , Nigeria., 2018-04-21) sowande, olugbenga, Akinkunmi; Idachaba, Francis; Agboje, E; Adebowale, Quadri, R.; Faruk, Nasir; Olawoyin, Lukmon; Onidare, Samuel, O.; Ilesanmi, Olufemi
    It is expected by 2020 5G cellular technologies will be rolled out, and it is expected to provide higher data rate, reduces end-to-end delay, ultra-low energy consumption and interconnects to other existing and emerging technology (autonomous systems). Different working groups have proposed different template that will suite 5G cellular network, but these can only be achieved by harmonizing all these standards, policies and regulations to achieve this goal. This study focused on how existing mobile cellular technologies can be fused into the proposed 5G cellular technology and highlight key challenges that will be experienced from planning phase to full deployment phase.
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    Sub- 6 GHz 5G Spectrum for Satellite-Cellular Convergence Broadband Internet Access in Nigeria
    (Praise Worthy Prize, 2022-06) sowande, olugbenga; Idachaba, Francis; Ekpo, Sunday; Faruk, Nasir; Uko, Mfonobong; Ogunmodimu, olugbenga
    Broadband access drives the global digital economy and has triggered the emergence of newer radio access technologies to meet data-driven consumers' expectations. In the period 2019-2025, it is estimated that the compound annual growth rate (CARG) of Sub-Sahara Africa will be above 28 % though ranked lowest amongst other regions. The Covid-19 pandemic has occasioned an unprecedented global demand for broadband internet access. Nigeria's broadband access is 42.02 %, which needs an advanced radio communication network infrastructure upgrade in order to bridge the current gap. Consequently, satellite-cellular convergence is a game-changer for increased rural and urban broadband connectivity penetration. The emergence of the fifth-generation (5G) network is expected to break new market share grounds and increase internet penetration. This paper focuses on the frequency range 1 (FR1: 450 – 7125 MHz) band due to their advantages, including broader coverage, better capacity, and low-cost deployment in sub-Saharan Africa. This paper presents the current usage of Nigeria spectrum bands allocated for mobile communication in the sub-7 GHz band. Potential spectrum bands such as 450-470 MHz, 1427-1518 MHz, 2300-2400 MHz, 3600-4200 MHz, 4400-5000 MHz, 5480-5710 MHz 5900-7125 MHz are suggested to add to the already recommended bands due to their low utilization (i.e., below 10 % average duty cycle). In addition, it is suggested to deploy carrier aggregation methodology to meet gigabit speed for 5G in Nigeria.