scholarly journals ANALISIS TINGKAT KINERJA JARINGAN WIRELESS IEEE 802.11N MENGGUNAKAN MIKROTIK

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Dhiaul Qadri ◽  
Teuku Yuliar Arif ◽  
Afdhal Azmi
Keyword(s):  
Packet Loss ◽  
Access Point ◽  
Data Rate ◽  
Ieee 802.11N

Jaringan wireless merupakan sekumpulan komputer yang saling terhubung antara satu komputer dengan komputer yang lain sehingga menjadi sebuah jaringan komputer. Jaringan ini menggunakan media udara/gelombang untuk mentransmisikan data. Pada suatu jaringan, kecepatan dipengaruhi oleh perangkat yang digunakan oleh user dan perangkat yang menjadi AP, jarak dan faktor ruangan. Pada penelitian ini mencoba melihat kinerja jaringan wireless IEEE 802.11n. Penelitian ini dilakukan halaman rumah dengan menggunakan 4 laptop, 3 sebagai client dan 1 laptop sebagai server dengan 1 router Mikrotik sebagai access point (AP). Pengujian ini dilakukan mencari nilai rata-rata Uplink dan Downlink dari Throughput, Jitter dan Packet Loss dengan pengujian dengan 4 pengujian dengan jarak berbeda-beda, yaitu 5 meter, 10 meter, 15 meter dan campuran menggunakan tool Jperf dengan paket UDP yang telah disesuaikan oleh IEEE 802.11N, waktu selama 50 detik dan bandwidth default. Dari hasil pengujian yang telah dilakukan client dengan jarak 5 meter dari AP memiliki throughput 1 Mbps, jitter 2.536 ms dan packet loss 0%, Sedangkan pada saat jarak 15 dan campuran packet loss mengalami kehilangan paket yang lebih besar yaitu pada data rate 150 mengalami 33.59% kehilangan data dan jarak campuran mengalami 30.56% kehilangan data, sehingga paket yang dikirim tidak sesuai dari data yang sebelumnya. Dari pengujian ini juga bisa dilihat juga perangkat dan ruangan yang memiliki hambatan sangat berpengaruh kualitas sinyal internet tersebut. Kata kunci: server, client, Throughput, AP, Bandwidth, Packet Loss, Jitter, UDP, Jaringan wireless, MikroTik dan Jperf.

scholarly journals Analisis Pengaruh Interferensi Frekuensi Terhadap Kinerja Access Point Dengan Teknologi IEEE 802.11n

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Suri Darmiantini ◽  
I Wayan Agus Arimbawa ◽  
Andy Hidayat Jatmika
Keyword(s):  
Frequency Band ◽  
Packet Loss ◽  
Communication System ◽  
Local Area Network ◽  
Access Point ◽  
Wireless Channel ◽  
Area Network ◽  
Coverage Area ◽  
Ieee 802.11N ◽  
Network Quality

Technologies that support wireless networks include WLAN (Wireless Local Area Network) and WPAN (Wireless Personal Area Network). One of the most widely used WLAN products today is IEEE 802.11n while the WPAN application is Bluetooth. Using the same frequency band in a coverage area can cause interference. Interference that occurs can be caused due to the use of 2 pieces of the same communication system, as well as different in a region. This study aims to determine how much influence interference has on the decline in the quality of a communication system with parameters measuring bandwidth, jitter, and packet loss. From the results of measurements and analysis shows that network quality is affected due to interference. Where if the network is free from interference around it, the network quality will be better, if the network experiences interference because using the same frequency band in the same coverage area can affect network quality such as reduced bandwidth value, increased jitter, and packet loss as well as channel usage and different channels. And the closer the distance of the access point that uses a different channel in a coverage area will cause the decreasing bandwidth value to increase the value of jitter and packet loss and vice versa. Keywords: interference, wireless, channel, bandwidth, jitter, packet loss.

scholarly journals Análisis basado en parámetros QoS para el servicio VoIP sobre wireless en un campus universitario [Analysis based on QoS parameters for VoIP service on a wireless network within a university campus]

2014 ◽  
Author(s):  
Alexander Olave ◽  
Luis Felipe Valencia ◽  
Juan Carlos Cuéllar
Keyword(s):  
Quality Of Service ◽  
Wireless Network ◽  
Packet Loss ◽  
Cost Benefit ◽  
Access Point ◽  
University Campus ◽  
Delay Jitter ◽  
Qos Parameters ◽  
La Red

Resumen Voz sobre IP, VoIP, es uno de los servicios con mayor desarrollo bajo plataformas inalámbricas; actualmente se ha iniciado su implementación como alternativa frente a la PSTN (red pública conmutada). El interés por VoIP radica en su relación costo-beneficio, ya que las organizaciones pueden utilizar la misma plataforma de su red de datos para transmitir voz. Por lo anterior, es importante que la organización tenga claro que, para garantizar el buen funcionamiento del servicio de VoIP, es decir para ofrecer QoS, se debe realizar la medición de parámetros que afectan la calidad del servicio como lo son: el retardo, la variación del retardo, el ancho de banda y la pérdida de paquetes. Este artículo analiza y valida los parámetros de QoS necesarios para garantizar el buen funcionamiento del servicio de VoIP sobre la red inalámbrica del campus de la Universidad Icesi. Se realizan pruebas en diferentes escenarios para mostrar que no solo factores como el retardo, y su variación, influyen en la calidad de servicio, sino que también la intensidad de la señal que recibe el cliente desde los puntos de acceso.Palabras Clave: Voz sobre IP, Calidad de servicio, Pérdida de paquetes, Retardo, Variación del Retardo, Intensidad de Señal. Abstract VoIP is one of the services that has been developing over under this type of wireless platforms and today has begun to implement as an alternative to the PSTN (Public Switched Telephone Network). The interest in VoIP is its cost-benefit ratio, and that organizations can use the same platform for their data network to transmit voice. Therefore it is important that the organization is clear that to ensure the smooth operation of the VoIP service, ie provide QoS, you must perform the measurement of parameters that affect the quality of service such as: delay, jitter, bandwidth, packet loss. In this paper we analyze and validate the QoS parameters needed to ensure the smooth operation of VoIP over wireless network on the Icesi University campus. We performed a series of tests in different scenarios to show that not only factors such as delay and jitter influencing the quality of service, but also the client signal strength received from of the AP (Access Point).Keywords: Voice over IP, Quality of service, Packet Loss, Delay, Delay variation, signal intensity.

scholarly journals Wireless Body Area Network (WBAN)-Based Telemedicine for Emergency Care

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2153 ◽  
Author(s):  
Latha R ◽  
Vetrivelan P
Keyword(s):  
Packet Loss ◽  
Loss Rate ◽  
Bayes Theorem ◽  
Data Rate ◽  
Packet Loss Rate ◽  
Medical Decision ◽  
Area Network ◽  
Body Area ◽  
Delay Sensitive ◽  
Emergency Monitoring

This paper is a collection of telemedicine techniques used by wireless body area networks (WBANs) for emergency conditions. Furthermore, Bayes’ theorem is proposed for predicting emergency conditions. With prior knowledge, the posterior probability can be found along with the observed evidence. The probability of sending emergency messages can be determined using Bayes’ theorem with the likelihood evidence. It can be viewed as medical decision-making, since diagnosis conditions such as emergency monitoring, delay-sensitive monitoring, and general monitoring are analyzed with its network characteristics, including data rate, cost, packet loss rate, latency, and jitter. This paper explains the network model with 16 variables, with one describing immediate consultation, as well as another three describing emergency monitoring, delay-sensitive monitoring, and general monitoring. The remaining 12 variables are observations related to latency, cost, packet loss rate, data rate, and jitter.

An IEEE 802.11n Based Multi-Channel MAC Protocol for Underground Metal Mine Wireless Network

2014 ◽  
Vol 571-572 ◽  
pp. 428-432
Author(s):  
Feng Jin ◽  
Xu Liu ◽  
Xiao Lv ◽  
Da Zhang
Keyword(s):  
Communication Networks ◽  
Mac Protocol ◽  
Access Point ◽  
Wireless Communication Networks ◽  
Ieee 802.11N ◽  
Metal Mine ◽  
Practical Performance ◽  
Communication Reliability ◽  
Channel Packet ◽  
Preliminary Application

At present, wireless communication networks obtain preliminary application in underground metal mines, but the problems of anti-interference ability and communication capability generally exist. With regard to this situation, this paper proposed an IEEE 802.11n based multi-channel MAC protocol (MC-MAC), which supports multi-channel dynamically switching by evaluating real time channel packet received rate. MC-MAC can improve wireless networks’ data throughput, anti-interference ability, and communication reliability. To evaluate the practical performance of MC-MAC, This paper designed and implemented an wireless access point based on IEEE 802.11n as testing platform, experimental results show that MC-MAC can provide 193Mbps physical links rate and improve network anti-interference ability effectively, it is suitable for underground metal mine applications.

Priority Scheduling Algorithm for Traffic in a LTE-based Defence Mesh Network Incorporating Centralised Scheduling Architecture

2017 ◽  
Vol 67 (5) ◽  
pp. 581
Author(s):  
Sidharth Shukla ◽  
Vimal Bhatia
Keyword(s):  
Packet Loss ◽  
Mesh Networks ◽  
Scheduling Algorithm ◽  
Data Rate ◽  
Mesh Network ◽  
High Data Rate ◽  
Priority Scheduling ◽  
High Data ◽  
Wireless Mesh

<p>Wireless mesh networks (WMN) are the networks of future and can operate on multiple protocols ranging from WiFi, WiMax to long term evolution (LTE). As a recent trend defence networks are incorporating off-the-shelf, state of the art commercial protocols to enhance the capability of their networks. LTE is one such commercially available protocol which is easy to deploy and provide high data rate which can be ideally implemented in WMN for defence networks. To enable these high data rate services LTE-based defence mesh networks (DMN) are the requirement of the day and future. However, LTE-based DMN are prone to congestion at times of active operations or full-fledged war. The congestion scenarios may lead to LTE packet loss. Hence, it is pertinent that these networks amalgamate information grooming algorithms to alleviate the throughput of the network in peak hour conditions. An efficient priority scheduling algorithm based on class of service prioritisation, data rate consumption and location of origin of traffic in the DMN is proposed. The simulations demonstrate that by incorporating the proposed priority scheduling algorithm, the overall packet loss of priority packets in the DMN reduces substantially.</p>

scholarly journals ANALISIS CAKUPAN LAYANAN WI-FI GEDUNG PASCASARJANA UNIVERSITAS UDAYANA

2019 ◽  
Vol 6 (2) ◽  
pp. 60
Author(s):  
Putu Dhiko Pradnyana ◽  
D.M. Wiharta ◽  
N.P. Sastra
Keyword(s):  
Packet Loss ◽  
Wireless Lan ◽  
Access Point ◽  
Floor Plan ◽  
Wireless Technology ◽  
Coverage Area ◽  
Level Measurement ◽  
Delay Measurement ◽  
Calculation Results

The main changes in the telecommunication during these present days come mainly from wired technology to wireless technology. The Wireless LAN (WLAN) configuration consists of an access point, connected to users using air medium. The postgraduate building of Universitas Udayana has been equipped with a wireless network, supporting the study activities within the building. This research explains regarding the signal level quality and the Quality of Service (QoS) by analyzing the Wi-Fi coverage. The measurements were divided into two models, with and without barriers. The highest result comes to -42 dBm, conversely, the lowest is -82 dBm. Thus, the results show that the throughput value is 3.97 Mbps. Within the maximum bandwidth of 10 Mbps, the average packet-loss is not more than 3%. The delay measurement provides a result of not more than 100 ms, and the jitter obtained is 0.04. According to the digital floor plan, the calculation results of the coverage area match the signal level measurement.

COMPARATIVE CHARACTERISTICS OF WIRELESS SYSTEMS OF 802.11 STANDARDS FOR CAPACITY AND PERFORMANCE

2019 ◽  
Author(s):  
T.N. Narytnik ◽  
P. G. Akopyan ◽  
V.G. Saiko ◽  
V.I. Korsun ◽  
S.V. Sarapulov
Keyword(s):  
Mobile Networks ◽  
New Technologies ◽  
Access Point ◽  
Packet Transmission ◽  
Battery Life ◽  
Data Traffic ◽  
Ieee 802.11N ◽  
Total Data ◽  
And Performance ◽  
Network Simulation Model

At present, there is an exponential increase in the total data traffic of mobile networks. Implementation of new technologies, implementation of innovative infrastructure solutions, as well as optimization and increase of efficiency of use of existing networks are necessary to prevent failures and congestion. The most promising way, from a mobile operator's perspective, is to develop a macro level and use Wi-Fi to offload LTE-A (Wi-Fi Offloading). However, the efficiency of the conflict resolution algorithms used in modern Wi-Fi systems is significantly reduced with increasing number of subscribers. Features of the family of the latest Wi-Fi standards (IEEE 802.11n, IEEE 802.11ac, IEEE 802.11ax), which are intended for unloading mobile networks and quality provision of Internet of Things, are considered in the article. A review and comparison of the protocols of the latest IEEE 802.11 standards showed that, technically, Wi-Fi 6 has a data rate that is 37% faster than 802.11ac, but more importantly, the updated specification offers 4 times more bandwidth per user in crowded places, as well as higher energy efficiency, which should increase the battery life of the devices. To achieve these improvements, 802.11ax has made many changes, including several multi-user technologies borrowed from the cellular industry, namely MU-MIMO and OFDMA technologies, which greatly increase bandwidth and productivity through more concurrent connections and more careful use of the spectrum. The results of simulation modeling of the delay in packet transmission, average access point bandwidth and data loss values ​​using different modes of collective access to the IEEE 802.11n network channels: distributed (DCF) and centralized (PCF) access coordination functions. OPNET Modeler, which is radio-oriented and allows you to build models without programming, has been selected to develop the network simulation model.

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