scholarly journals Towards Enabling Multihop Wireless Local Area Networks for Disaster Communications

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Muhammad Bux Laghari ◽  
Hamayoun Shahwani ◽  
Syed Attique Shah ◽  
Raja Asif Wagan ◽  
Zahid Rauf ◽  
...  
Keyword(s):  
Local Area Networks ◽  
Relay Networks ◽  
Local Area ◽  
Wireless Local Area Networks ◽  
Coverage Area ◽  
Transmission Rates ◽  
Channel Conditions ◽  
Multihop Relay Networks ◽  
End To End ◽  
The Impact

xCalamities such as earthquakes and tsunami affect communication services by devastating the communication network and electrical infrastructure. Multihop relay networks can be deployed to restore the communication environment quickly in catastrophe-stricken areas. However, performance in terms of throughput is affected by deploying the relay networks. In wireless local area networks (WLANs), the primary purpose of multiband transmission employing multihop relay networks is to increase the throughput and reduce the latency. In the future, wireless networks are believed to carry high throughput, more data rates, and less latency by expanding bandwidth-demanding applications. Simultaneous multiband transmission in WLAN systems is considered to increase the coverage area without power escalation. Due to the inherent characteristics of different bands and channel conditions, transmission rates tend to be different. The impact of such conditions may cater to the disproportional distribution of data among bands, causing some of the bands to be overwhelmed, which incurs buffer overflow and packet loss. In contrast, the channel capacity of some of the bands remains underutilized. In this paper, we consider the channel conditions and transmission rates of each band on either side of the relay to address the problems mentioned above. Furthermore, this paper proposes a load distribution-based end-to-end traffic scheduling technique to improve system performance. The simulation results demonstrate the effectiveness of our proposed method with maximizing throughput and minimizing end-to-end delay.

Understanding the Impact of Wireless Local Area Networks on Users and Assessing User Satisfaction with Wireless Local Area Networks

2008 ◽  
pp. 212-230
Author(s):  
Leida Chen ◽  
Ravi Nath ◽  
Jonathan Cowin
Keyword(s):  
User Satisfaction ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area Networks ◽  
Academic Research ◽  
Local Area ◽  
Wireless Local Area Networks ◽  
Area Network ◽  
Time Saving ◽  
The Impact

Recently, wireless local area network (WLAN) has gained increasing popularity. WLAN equipment manufacturers and practitioners claimed that WLAN had brought dramatic improvements in the forms of productivity gains and attainment of convenience, flexibility, mobility, and time saving to organizations and their employees. However, very little academic research has been conducted to verify these claims and further our understanding of this new phenomenon. By surveying end-users and managers, this study investigates the impact of WLAN on users and their work. User satisfaction with WLAN is also assessed. This article presents the findings from the study along with a discussion on recent development and future trends of WLAN. Finally, recommendations to researchers, managers, WLAN technology providers and equipment manufacturers are also provided.

scholarly journals Analysis of EMC problems with the purpose of developing an effective method of WLAN design on the basis of information systems considering electromagnetic

Connectivity ◽  
2020 ◽  
Vol 146 (5) ◽  
Author(s):  
A. V. Lemeshko ◽  
◽  
O. M. Tkachenko ◽  
А. О. Makarenko ◽  
O. M. Tkalenko ◽  
...  
Keyword(s):  
Information Systems ◽  
Electromagnetic Interference ◽  
Local Area Networks ◽  
Access Point ◽  
Local Area ◽  
Wireless Local Area Networks ◽  
Ieee 802.11E ◽  
Detection Range ◽  
Access Points ◽  
The Impact

The article analyzes the scope, technologies and principles of wireless local area networks, which allowed to mark the “bottlenecks” of these technologies, which need special attention when designing: the problem of hidden node; mutual interference between neighboring cells (intrasystem EMC); intersystem interference; providing QoS for responsible applications; expansion of wireless local area networks; the impact of network deployment features. The methods used to solve EMC problems in wireless local area networks are shown and their efficiency is analyzed: the mechanism of access to the transmission medium; IEEE 802.11e (QoS) standard; additional standards designed to reduce the impact of interference (802.11 h and k); coding and modulation. It is shown that the accounting of intrasystem and intersystem interference should be carried out in the early stages of design of wireless local area networks. It is shown that the existing mechanisms of access to the transmission medium are designed to organize the conflict-free operation of transceivers within a single access point and are vulnerable to interference created by transmission stations of neighboring access points. The dynamic sensitivity control algorithm is aimed at partially solving this problem, however, the main disadvantage of the DCC algorithm proposed for use in Wi-Fi 6 is that stations located near access points have a higher probability of access to the environment due to a higher signal level. Relative to electromagnetic interference, which leads to a shorter detection range of the carrier. That requires the development of advanced mechanisms to control the sensitivity of the service area of access points. Based on the analysis, a conclusion is made about the need to develop a methodology for designing wireless local area networks based on information systems, taking into account electromagnetic interference. Which will reduce the time of their design and increase the efficiency of their further operation.

Link-Level Simulator for Wireless local Area Network

2018 ◽  
Vol 6 (7) ◽  
pp. 314
Author(s):  
Chaithra. H. U ◽  
Vani H.R
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area Networks ◽  
Local Area ◽  
Long Term Evolution ◽  
Wireless Local Area Networks ◽  
Area Network ◽  
Network Simulator ◽  
Term Evolution

Now a days in Wireless Local Area Networks (WLANs) used in different fields because its well-suited simulator and higher flexibility. The concept of WLAN  with  advanced 5th Generation technologies, related to a Internet-of-Thing (IOT). In this project, representing the Network Simulator (NS-2) used linked-level simulators for Wireless Local Area Networks and still utilized IEEE 802.11g/n/ac with advanced IEEE 802.11ah/af technology. Realization of the whole Wireless Local Area Networking linked-level simulators inspired by the recognized Vienna Long Term Evolution- simulators. As a outcome, this is achieved to link together that simulator to detailed performances of Wireless Local Area Networking with Long Term Evolution, operated in the similar RF bands. From the advanced 5th Generation support cellular networking, such explore is main because different coexistences scenario can arise linking wireless communicating system to the ISM and UHF bands.

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