Performance optimization of smartphones in dual-band high-efficiency and very high throughput mobile networks
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Performance optimization of smartphones in dual-band highefficiency and very high throughput mobile networks Mina Malekzadeh1 Accepted: 18 September 2020 Ó Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract By focusing on dense areas, 802.11ax high-efficiency wireless (HEW) standard offers some improvements over 802.11ac very high throughput (VHT). The HEW improvements are mainly based on several key factors and diversity of their values. While each particular value corresponds to a key factor can directly affect the network performance, there is a great deal of uncertainty regarding their practical effectiveness in dense areas. Thus, identifying the efficiency of each particular value of the key factors is of prime importance for determining the optimal values and thereby enhancing the network performance. However, identifying the optimal values in wireless dense areas where a large number of users share the same link is a challenging task and needs comprehensive comparative approaches. In this context, this work proposes a model for high-density HEW and VHT deployment with a special focus on their common key factors. The model includes 204 distinct simulation scenarios, categorized under six major classes, each corresponds to a particular key factor. The model is implemented and the results are obtained to determine the optimal values of the key factors. Moreover, to validate the accuracy of the simulation results, the analytical results are obtained and compared. Keyword HEW VHT Optimization Analytical evaluation Simulation evaluation
1 Introduction The 802.11ac very high throughput (VHT) was released in 2013 to offer faster data transfer than the previous wireless standards. However, working in only a 5 GHz frequency band causes some compatibility issues with the older standards. To address the issues, 802.11ax high-efficiency wireless (HEW) was released in 2019. The HEW standard works in both 2.4 GHz and 5 GHz radio bands with a special focus on high-density areas such as sports stadiums, university auditoriums, and airports [1]. The HEW declares several performance improvements over VHT [2] using a variety of key factors in such a way that the level of improvements and quality of the mobile networks directly rely on them. Thus, the selection of the factors is quite critical as the network performance can be influenced either positively or negatively. This, on one hand, implies & Mina Malekzadeh [email protected] 1
Electrical and Computer Engineering Faculty, Hakim Sabzevari University, 9617976487 Sabzevar, Iran
the importance of verifying the impact of the factors and identifying their recommended settings, and on the other hand, requires a precise design, measurement, and analysis. This work contributes to this direction by determining the influence of these factors, thereby establishing a baseline to select the optimal values that effectively optimize the performance of users in dense HEW and VHT deployment. To achieve t
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