scholarly journals Impact of Channel Bonding on Network Performance in Real-Time Applications

2019 ◽  
Vol 9 (1) ◽  
pp. 4361-4366
Keyword(s):  
Real Time ◽  
Performance Metrics ◽  
Local Area Network ◽  
Network Throughput ◽  
Area Network ◽  
File Transfer ◽  
Ieee 802.11N ◽  
Channel Bonding ◽  
Real Time Applications ◽  
The Impact

This paper investigates the impact of channel bonding property provided in wireless technology on performance in real-time applications. IEEE 802.11n is an amendment to the IEEE 802.11 Wireless Local Area Network (WLAN) standard, which aims to extensively improve network throughput over legacy WLANs. This new network technology provides a better performance for general Internet applications such as web service and file transfer. However, the recent network measurements show that real-time application traffic is consistently increasing in the Internet. Real-time applications such as Voice over IP (VoIP) or video conferencing requires distinct performance metrics compared to the general Internet services in that they prioritize delay, latency, and delay jitter rather than network throughput. This paper investigates how such real-time applications perform in IEEE 802.11n WLANs. Our indoor experiments show that 802.11n basically supports better service than the previous WLAN standards. The channel bonding technique in 802.11n further improves the performance even under mobile conditions.

scholarly journals Study on real-time media congestion avoidance technique for video streaming over wireless local area network

2019 ◽  
Vol 15 (3) ◽  
pp. 1535
Author(s):  
C Mohanapriya ◽  
J Govindarajan
Keyword(s):  
Congestion Control ◽  
Real Time ◽  
Video Streaming ◽  
Wireless Lan ◽  
Video Transmission ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Congestion Avoidance ◽  
Area Network ◽  
Real Time Applications

<p>The video streaming is one of the important application which consumes more bandwidth compared to non-real-time traffic. Most of the existing video transmissions are either using UDP or RTP over UDP. Since these protocols are not designed with congestion control, they affect the performance of peer video transmissions and the non-real-time applications. Like TFRC, Real-Time Media Congestion Avoidance (RMCAT) is one of the recently proposed frameworks to provide congestion control for real-time applications. Since the need for video transmission is increasing over the wireless LAN, in this paper the performance of the protocol was studied over WLAN with different network conditions. From the detailed study, we observed that RMCAT considers the packet losses due to the distance and channel conditions as congestion loss, and hence it reduced the sending rate thereby it affected the video transmission.</p>

scholarly journals Theses and Dissertations Abstract E-Archiving System with SMS Support

2022 ◽  
Vol 05 (01) ◽  
Author(s):  
Bella Gertrude B. Alpasan ◽  
Keyword(s):  
Real Time ◽  
Wireless Network ◽  
Architectural Design ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Related Literature ◽  
Real Time Information ◽  
The Impact ◽  
Theses And Dissertations

The NIPSC Library is currently using manual-based in keeping the theses and dissertation in order to save more time and easy way of finding related literature, an alternative solution to solve the current problem was developed. The “Theses and Dissertations Abstract E-Archiving System with SMS Support”, a system provides borrowers with real-time information in finding related literature. The architectural design used in this system is N-tier architecture. Since it is connected to the Local Area Network inside the library, the researchers can easily access the resources in wired and wireless network to help the Librarians and the researchers inside and outside the library to access the electronic archiving, the collections of abstract theses and dissertations in wired and wireless network to view, download in jpeg format for the protection of copyright and IPR law which can be printed in real-time. The developed Theses and Dissertations Abstract E-Archiving System with SMS Support was based on the result and findings of surveys, electronic archiving of theses and dissertations were accessible just in time, the developed system can perform its required functions efficiently while sharing a common environment and resources without detrimental the impact on any other product.

scholarly journals Performance evaluation of the IEEE 802.11n random topology WLAN with QoS application

2020 ◽  
Vol 10 (2) ◽  
pp. 1924
Author(s):  
Ziyad Khalaf Farej ◽  
Mustafa Mohammad Jasim
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Multiple Input Multiple Output ◽  
Local Area ◽  
Antenna System ◽  
Area Network ◽  
Node Number ◽  
Ieee 802.11N ◽  
Random Topology ◽  
The Impact

The IEEE 802.11n supports high data rate transmissions due its physical layer Multiple Input ‎Multiple Output (MIMO) advanced antenna system and MAC layer enhancement features (frame ‎aggregation and block acknowledgement). As a result this standard is very suitable for multimedia ‎services through its Enhanced Distributed Channel Access (EDCA). This paper focuses on ‎evaluating the Quality of Service (QoS) application on the performance of the IEEE 802.11n ‎random topology WLAN. Three different number of nodes (3, 9 and 18) random topology with one ‎access point are modeled and simulated by using the Riverbed OPNET 17.5 Modular to ‎investigate the Wireless Local Area Network (WLAN) performance for different spatial streams. ‎The result clarified the impact of QoS application and showed that its effect is best at the 18 node ‎number topology. For a 4x4 MIMO, when QoS is applied and with respect to the no QoS ‎application case, simulation results show a maximum improvement of 86.4%, 33.9%, 52.2% and ‎‎68.9% for throughput, delay, data drop and retransmission attempts, respectively. ‎

Perancangan Sistem Backup Data Menggunakan File Transfer Protocol Pada Jaringan Local Area Network Di SMP Negeri 6 Pekanbaru

2020 ◽  
Author(s):  
Sasqia Ismi Aulia ◽  
Keyword(s):  
Data Storage ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
File Transfer ◽  
Network Connection ◽  
Teachers And Students ◽  
Network Operating Systems ◽  
Selection Of ◽  
Server Computer

This study aims to design a LAN network for data backup systems that are in accordance with certain aspects such as the selection of network design, network hardware, network transmission media, network connection devices, and network operating systems. Data is the most important thing for everyone, data can usually be reused even though it has not been used for some time, and therefore data storage is a serious problem that must be considered. Data on the server computer is very important to be maintained so that a backup process is needed on that data to another computer that is used as a backup in the event of damage to the hardware and software of the server computer. FTP is one of the solutions to the problems faced above,where FTP can be used to process the download and upload between the server and client computers. This design uses the Autobot system. The expected benefit in designing this LAN is that the existing network at SMP Negeri 6 Pekanbaru is not only used by employees and employees but can be used and enjoyed by teachers and students to access the internet anywhere as long as it is still within the scope of the SMP Negeri 6 area Pekanbaru.

scholarly journals Performance Analysis of Wireless Local Area Network for a High-/Low-Priority Traffic Ratio at Different Numbers of Access Categories

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 693
Author(s):  
Kvitoslava Obelovska ◽  
Olga Panova ◽  
Vincent Karovič
Keyword(s):  
Network Performance ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Large Network ◽  
Medium Access ◽  
Massive Growth ◽  
Adaptive Adjustment ◽  
The Impact

The performance of Wireless Local Area Network (WLAN) is highly dependent on the processes that are implemented in the Medium Access Control (MAC) sublayer regulated by the IEEE 802.11 standard. In turn, various parameters affect the performance of the MAC sublayer, the most important of which is the number of stations in the network and the offered load. With the massive growth of multimedia traffic, research of the network performance depending on traffic types is relevant. In this paper, we present the impact of a high-/low-priority traffic ratio on WLAN performance with different numbers of access categories. The simulation results show different impact of high-/low-priority traffic ratio on the performance of the MAC sublayer of wireless LANs depending on different network-sizes and on network conditions. Performance of the large network with two access categories and with the prevalent high-priority traffic is significantly higher than in the case of using four categories on the MAC sublayer. This allows us to conclude that the performance improvement of the large network with the prevalent high-priority traffic can be achieved by an adaptive adjustment of the access categories number on the MAC sublayer.

Analysis of electromagnetic absorption in new design of PIFA antenna using metamaterials

2021 ◽  
Author(s):  
Hamza Ben Hamadi ◽  
said ghnimi ◽  
Lassaad Latrach ◽  
Philippe Benech ◽  
Ali Gharsallah
Keyword(s):  
Human Body ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Dual Band ◽  
Area Network ◽  
Dual Band Antenna ◽  
Cubic Model ◽  
The Impact ◽  
Pifa Antenna

Abstract This paper presents the design, simulation and fabrication of a miniaturized wearable dual-band antenna on a semi-flex substrate; she is operable at 2.45/5.8 GHz for wireless local area network applications. The electrical and radiation characteristics of this proposed antenna were obtained by means of a technical of insertion of a slot to tune the operating frequencies. To study the impact of the electromagnetic radiation of the structure of the human body, it is necessary to minimize the back radiation towards the user. Therefore, in this work, a multi-band artificial magnetic conductor (AMC) was placed directly above a dual-band planar inverted F antenna to achieve a miniaturization with excellent radiation performance. The simulation results were designed and simulated using Studio commercial software (CST). A good agreement was achieved between the results of simulation and the experimental. The Comparison of measurement results indicates that the gain improved from 1,84 dB to 3,8 dB, in the lower band, and from 2,4 dB to 4,1 in the upper band, when the antenna is backed by the AMC plane. The front-to-back ratio of the AMC backed PIFA antenna was also enhanced. Then, to ensure that the proposed AMC is harmless to the human body, this prototype was placed on three-layer human tissue cubic model. It was observed that the through inclusion of plane AMC, the peak specific absorption rate (SAR) decreased to 1,45 and 1,1 W/kg at 2,45 and 5.8 GHz, respectively (a reduction of around 3,7 W/kg, compared with an antenna without (AMC).

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