Optimasi Penempatan Lokasi Access Point dengan Metode Simulated Annealing dan Trilateration  (Studi Kasus : Universitas Budi Luhur)

INTISASI Teknologi tanpa kabel yang lebih dikenal dengan Wi-Fi. Wi-Fi (Wirelles Fidelity) adalah koneksi tanpa kabel yang menghubungkan jaringan komputer, seperti ponsel yang menggunakan teknologi radio sehingga pengguna dapat melakukan transfer data dengan cepat dan aman. Kebutuhan akan Wi-Fi terlihat dengan jelas, baik di rumah, di kantor-kantor, di kampus, maupun pusat-pusat bisnis. Trafik pengguna Wi-Fi semakin tinggi, namun pemasangan Access Point belum tepat banyak access point yang terpasang yang pemasangannya tidak menentukan jarak antar access point. Menyebabkan penumpukan sinyal dengan access point lain dan area yang tidak tercover oleh access point atau area blankspot. Banyaknya pemasangan access point yang tidak tepat menjadi permasalahan yaitu koneksi Wi-Fi yang tidak stabil dan banyaknya tempat yang tidak terjangkau oleh sinyal Wi-Fi atau blankspot. Salah satu metode yang dipakai dalam penentuan pemasangan access point saat ini adalah menggunakan metode Simulated Annealing dan Trilateration. Penelitian ini akan membahas optimasi pemasangan access point dengan menggunakan metode trilateration yang digunakan untuk mengukur jarak antar access point dan Simulated Aneling digunakan untuk mengukur kekuatan sinyal Wi-Fi. Dari hasil pemasangan Access point dengan menggunakan metode trialteration dan simulated annealing dapat mengurangi area blankspot dan mengurangi penumpukan sinyal dengan access point lain. Kata Kunci : access point, Simulated Annealing, Trilateration, Sinyal, Area. ABSTRACT Wireless technology, better known as Wi-Fi. Wi-Fi (Wirelles Fidelity) is a wireless connection that connects computer networks, such as mobile phones that use radio technology so that users can transfer data quickly and safely. The need for Wi-Fi is clearly visible, both at home, in offices, on campus, and business centers. Wi-Fi user traffic is getting higher, but the installation of Access Points is not right yet, many installed access points do not determine the distance between access points. Causes signal buildup with other access points and areas not covered by the access point or blankspot area. The number of improper access point installations is a problem, namely unstable Wi-Fi connections and many places that are not covered by Wi-Fi or blankspot signals. One of the methods used in determining the installation of an access point is to use the Simulated Annealing and Trilateration method. This study will discuss the optimization of the installation of access points using the trilateration method used to measure the distance between access points and Simulated Aneling is used to measure the strength of Wi-Fi signals. From the results of installing Access Points using the method of trialteration and simulated annealing can reduce the blankspot area and reduce the buildup of signals with other access points. Keywords: access point, Trilateration, Anneling Simulation, Signal, Area.

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Penggunaan Metode Simulated Annealing untuk Optimasi Penempatan Posisi Access Point pada Jaringan WI-FI

JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI ◽

10.36722/sst.v5i1.318 ◽

2019 ◽

Vol 5 (1) ◽

pp. 10

Author(s):

Ganang Eko Noviardianto ◽

Muhammad Novel ◽

Mercurius Broto Legowo

Keyword(s):

Simulated Annealing ◽

Statistical Mechanics ◽

Signal Strength ◽

Access Point ◽

Simulated Annealing Method ◽

Access Points ◽

Optimum Solution ◽

Received Signal Strength Indication ◽

Annealing Method

Abstrak – Tujuan dari penelitian ini adalah untuk menempatkan titik akses pada jaringan Wi-Fi. Dengan demikian, kekuatan sinyal yang diterima dari pemancar ke penerima adalah optimal. Masalah muncul ketika menempatkan titik akses untuk mempengaruhi nilai kekuatan sinyal. Selanjutnya, nilai ini akan digunakan untuk menentukan area jangkauan (jangkauan sinyal) dari pemancar (access point). Penelitian ini adalah studi kasus di Kampus Institut Perbanas di mana pengukuran kekuatan sinyal dari titik akses terhadap penerima di unit 2 dan unit 6 dari Perbanas Institute diukur menggunakan aplikasi inSSIDer. Studi kasus ini menghasilkan nilai Indikasi Kekuatan Sinyal yang Diterima (RSSI) dari pemancar ke penerima. Metode Simulated Annealing diterapkan dalam penelitian ini, dengan alasan untuk optimasi generik. Berdasarkan probabilitas dan mekanika statistik, algoritma ini dapat digunakan untuk menemukan pendekatan pada solusi optimal untuk suatu masalah. Hasil penelitian menunjukkan bahwa setelah dilakukan optimisasi menggunakan metode Simulated Annealing prosentase koverage area sebesar 98.66 % dan, diperoleh kenaikan persentase koverage area sebesar 87.15%. Dengan demikian, penelitian ini akan memberikan kontribusi untuk memodelkan penempatan posis titik akses dan kekuatan sinyal pada jaringan Wi-Fi yang diperoleh di Unit 2 dan Unit 6 Kampus Institut PerbanasAbstract – The purpose of this study is to place access points on Wi-Fi networks. Thus, the signal strength received from the transmitter to the receiver is optimal. Problems arise when placing access points to influence the signal strength value. Furthermore, this value will be used to determine the koverage area (signal koverage) of a transmitter (access point). This research is a case study at the Perbanas Institute Campus where measurements of the signal strength of the access point towards recipients in unit 2 and unit 6 of Perbanas Institute were measured using the inSSIDer application. This case study produced a Received Signal Strength Indication (RSSI) value from a transmitter to the receiver. The Simulated Annealing method applied in this study, with reasons for generic optimization. Based on probability and statistical mechanics, this algorithm can be used to find an approach to the optimum solution to a problem. The results showed that after optimization using the Simulated Annealing method the percentage of koverage area was 98.66%. And, the percentage of the koverage area was increased by 87.15%. Thus, this study will contribute to modeling the placement of access points and signal strength in Wi-Fi networks obtained in Units 2 and 6 of the Perbanas Institute Campus.Keywords - Koverage Area, RSSI, Simulated Annealing, Propagation, Wi-Fi

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Detecting & Eliminating Rogue Access Point in IEEE 802.11 WLAN

International Journal of Smart Sensor and Adhoc Network. ◽

10.47893/ijssan.2011.1032 ◽

2011 ◽

pp. 108-112

Author(s):

S. B. Vanjal ◽

Amol K. Kadam ◽

Pramod A. Jadhav

Keyword(s):

Low Cost ◽

Access Point ◽

Detection Algorithm ◽

Security Threats ◽

Wireless Technology ◽

Access Points ◽

Network Failure ◽

802.11 Wlan ◽

Specialized Hardware ◽

Rogue Access Point

Rogue Access Points (RAPs) is one of the leading security threats in current network scenario, if not properly handled in time could lead from minor network faults to serious network failure. Most of the current solutions to detect rogue access points are not automated and are dependent on a specific wireless technology. In this paper we propose the integrated solution for detection and eliminate the rogue access points. Rogue detection algorithm is also proposed. This Methodology has the following properties: (1) it doesn’t require any specialized hardware; (2) the proposed algorithm detects and completely eliminates the RAPs from network; Our proposed solution is effective and low cost.

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WI-FI Access Point (WAP) OPTIMAL Placement in an Indoor Location

International Journal for Research in Applied Science and Engineering Technology ◽

10.22214/ijraset.2021.38128 ◽

2021 ◽

Vol 9 (9) ◽

pp. 1084-1087

Author(s):

Roohi Farheen

Keyword(s):

Simulated Annealing ◽

Data Communication ◽

Access Point ◽

Indoor Positioning ◽

Optimal Number ◽

Reference Points ◽

Optimal Placement ◽

Location Services ◽

Access Points ◽

Indoor Location

Abstract: The popularity of location based applications is undiminished today. They require accurate location information which is a challenging issue in indoor environments. Wireless technologies can help derive indoor positioning data. Especially, the WiFi technology is a promising candidate due to the existing and almost ubiquitous Wi-Fi infrastructure. The already deployed WiFi devices can also serve as reference points for localization eliminating the cost of setting up a dedicated system. However, the primary purpose of these Wi-Fi systems is data communication and not providing location services. This accuracy can be increased by carefully placing the Wi-Fi access points to cover the given territory properly. This method is based on simulated annealing which finds the optimal number and placement of Wi-Fi access points with regard to indoor positioning and investigate its performance in a real environment scenario via simulations. Keywords: Wi-fi access point (WAP), simulated annealing, router, wireless, placement, locationing.

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TELE-MONITORING SYSTEM OF RISK IN RESPIRATORY PATIENTS

Biomedical Engineering Applications Basis and Communications ◽

10.4015/s1016237221500411 ◽

2021 ◽

pp. 2150041

Author(s):

Awad Al-Zaben ◽

Lina M.K. Al-Ebbini ◽

Badr Qatashah

Keyword(s):

Health Care ◽

Signal Processing ◽

Health Care Providers ◽

Mobile Phones ◽

Model Parameters ◽

Care Providers ◽

Server Side ◽

Respiration Signal ◽

At Home

In many situations, health care professionals need to evaluate the respiration rate (RR) for home patients. Moreover, when cases are more than health care providers’ capacity, it is important to follow up cases at home. In this paper, we present a complete system that enables healthcare providers to follow up with patients with respiratory-related diseases at home. The aim is to evaluate the use of a mobile phone’s accelerometer to capture respiration waveform from different patients using mobile phones. Whereas measurements are performed by patients themselves from home, and not by professional health care personnel, the signals captured by mobile phones are subjected to many unknowns. Therefore, the validity of the signals has to be evaluated first and before any processing. Proper signal processing algorithms can be used to prepare the captured waveform for RR computations. A validity check is considered at different stages using statistical measures and pathophysiological limitations. In this paper, a mobile application is developed to capture the accelerometer signals and send the data to a server at the health care facility. The server has a database of each patient’s signals considering patient privacy and security of information. All the validations and signal processing are performed on the server side. The patient’s condition can be followed up over a few days and an alarm system may be implemented at the server-side in case of respiration deterioration or when there is a risk of a patient’s need for hospitalization. The risk is determined based on respiration signal features extracted from the received respiration signal including RR, and Autoregressive (AR) moving average (ARMA) model parameters of the signal. Results showed that the presented method can be used at a larger scale enabling health care providers to monitor a large number of patients.

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Identificación de Patrones de Movilidad utilizando datos en tiempo real generados por Access Point en una red de comunicaciones de campus. Caso de estudio: Universidad Central del Ecuado

INGENIO ◽

10.29166/ingenio.v3i2.2236 ◽

2020 ◽

Vol 3 (2) ◽

pp. 15-25

Author(s):

Mario Chavez Estrella ◽

Robert Enríquez-Reyes ◽

Giovanny Cadena Flores ◽

Milton G. Mocayo Unda

Keyword(s):

Access Point ◽

Access Points ◽

La Red

El presente artículo tiene como finalidad mostrar información completa, precisa y en tiempo real, sobre la movilidad de los usuarios en un campus, identificando tipos de usuarios y sus características, todo esto mediante una plataforma informática constituida por dos aplicaciones un API especializado en el almacenamiento de la data depurada hacia una base de datos relacional, y una aplicación web que presenta información al usuario final. Dicha plataforma se desarrolla mediante el uso de tecnologías y herramientas de código abierto. La información entregada procede de los Access Points instalados en la red de comunicaciones del campus, la cual, mediante tratamiento informático, es anonimizada, almacenada, depurada y clasificada para su posterior análisis. Como caso de estudio se ha implementado la aplicación en el contexto universitario específicamente en la Universidad Central del Ecuador.

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Dekonstruksi titik akses diseminasi informasi pada Radio Boekoe

Berkala Ilmu Perpustakaan dan Informasi ◽

10.22146/bip.40525 ◽

2019 ◽

Vol 15 (2) ◽

pp. 188

Author(s):

Rukiyah Rukiyah ◽

Ana Irhandayaningsih ◽

Lydia Christiani

Keyword(s):

Qualitative Method ◽

Information Dissemination ◽

Information Access ◽

Access Point ◽

Access Points ◽

Study Approach ◽

Internet Radio ◽

Local Access

Introduction. Radio Boekoe as a community that affected by the determination of information technology, adapts through the deconstruction process of information dissemination access points by utilizing hybrid media. This study aims to discuss the deconstruction process of information dissemination access points on Radio Boekoe.Research methods. This research used a qualitative method with case study approach. The process of collecting data involved observations, interviews, and documentation studies. The informants are the founder, manager and volunteer of Radio Boekoe.Data Analysis. The research data was analyzed with the stages of reduction, display, and drawing conclusions.Results and Discussion. The deconstruction process of information access points on Radio Boekoe occurred through the use of hybrid media. The deconstruction process of the information access point was expanded to the process of adding information access capacity in the form of Bale Black Box co-working space.Conclusions. The process of deconstruction of information access points on Radio Boekoe occurs through the shifting of local access points in the form of the Gelaran Iboekoe to global hybrid media-based access in the form of internet radio. Furthermore, it is recommended to conduct a research to examine the effectiveness of using hybrid media to expand information access points.

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Underground Coal Mine Fingerprint Positioning Based on the MA-VAP Method

Sensors ◽

10.3390/s20185401 ◽

2020 ◽

Vol 20 (18) ◽

pp. 5401

Author(s):

Mingzhi Song ◽

Jiansheng Qian

Keyword(s):

Real Time ◽

Coal Mine ◽

Wireless Local Area Network ◽

Local Area Network ◽

Access Point ◽

Cumulative Distribution ◽

Kernel Principal Component Analysis ◽

Area Network ◽

Positioning Accuracy ◽

Access Points

The access points (APs) in a coal mine wireless local area network (WLAN) are generally sparsely distributed. It can, with difficulty, satisfy the basic requirements of the fingerprint positioning based on Wi-Fi. Currently, the effectiveness of positioning is ensured by deploying more APs in an underground tunnel, which significantly increases system cost. This problem can be solved by using the Virtual Access Point (VAP) method that introduces virtual access points (VAPs), which can be virtually arranged in any part of the positioning area without installing actual access points. The drawback of the VAP method is that the generated received signal strength (RSS) value of a VAP is calculated based on the mapping of RSS value from only one corresponding access point (AP). This drawback does not consider the correlation between different AP signals and the generated RSS value of a VAP, which makes the modeling of fingerprint samples and real-time RSS collection incomplete. This study proposed a Multi-Association Virtual Access Point (MA-VAP) method takes into account the influence of multi-association. The multi-association coefficient is calculated based on the correlation between the RSS values of a VAP and multiple access points (APs). Then, the RSS value generated by a VAP is calculated using the multi-association function. The real-time collected RSS values from multiple APs related to this VAP are the input of the multi-association function. The influence of the number of VAPs and their arrangement on positioning accuracy is also analyzed. The experimental positioning results show that the proposed MA-VAP method achieves better positioning performance than the VAP method for the same VAP arrangement. Combined with the Weight K-Nearest Neighbors (WKNN) algorithm and Kernel Principal Component Analysis (KPCA) algorithm, the positioning error of the MA-VAP method of the error distance cumulative distribution function (CDF) at 90% is 4.5 m (with WKNN) and 3.5 m (with KPCA) in the environment with non-line-of-sight (NLOS) interference, and the positioning accuracy is improved by 10% (with WKNN) and 22.2% (with KPCA) compared with the VAP method. The MA-VAP method not only effectively solves the fingerprint positioning problem when APs are sparse deployed, but also improves the positioning accuracy.

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Solar-Supplied Satellite Internet Access Point for the Internet of Things in Remote Areas

Sensors ◽

10.3390/s20051409 ◽

2020 ◽

Vol 20 (5) ◽

pp. 1409

Author(s):

Angus Wong ◽

Yan Tai Chow

Keyword(s):

Internet Of Things ◽

Solar Energy ◽

Internet Access ◽

Access Point ◽

Satellite Communications ◽

The Internet ◽

Wireless Technology ◽

Internet Connectivity ◽

Remote Areas ◽

The Internet Of Things

As satellite communications provide ubiquitous coverage, they play a key role in providing Internet connectivity in remote or marginalized areas, so as to enable the vision of a truly global connectivity of the Internet of Things (IoT). However, these areas often lack reliable electricity supply. Thus, this paper proposes a satellite internet access point powered by solar energy, so that a stable Internet connection can be provided. The access point provides Wi-Fi coverage so that sensors, IoT, and devices can connect to the access point using the Wi-Fi, a common wireless technology. Our design took some cost-saving measures to make it affordable and selected the components that require minimal maintenance operations. The satellite access point costs about USD $500, and can provide four days of Internet connectivity without solar energy.

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Bluetooth Hands Free System for Fixed Telephone Research

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.198-199.1603 ◽

2012 ◽

Vol 198-199 ◽

pp. 1603-1608

Author(s):

Qing Hua Shang ◽

Ping Liu

Keyword(s):

Power Consumption ◽

Low Power ◽

Mobile Phones ◽

Daily Life ◽

Low Cost ◽

Low Power Consumption ◽

Wireless Technology ◽

Free System ◽

Wireless Technologies ◽

The Stability

Wireless technology has walked into the People's Daily life, Bluetooth technology comes to the fore in so many wireless technologies with its low power consumption, low cost and other characteristics. Bluetooth technology is used widely, we can see it in mobile phones or in our cars, it seems that Bluetooth technology has penetrated into every aspect of our lives. Even so, the combination of Bluetooth technology and fixed telephone still has a very big development space. If the stability of the fixed telephone combined with the flexible of Bluetooth technology, it will give the life of people a lot of convenience. This paper will introduces the Bluetooth hands free system for fixed telephone, it is such a product that it will make Bluetooth technology and common fixed phone combined, and make it a reality that people can use common Bluetooth headset to answer or call a fixed telephone.

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Hukum Pelaksanaan Salat Tarawih di Rumah Karena Wabah dan Membaca Al-Qur’an Melalui Mushaf dan HP Ketika Salat

BUSTANUL FUQAHA: Jurnal Bidang Hukum Islam ◽

10.36701/bustanul.v1i2.150 ◽

2020 ◽

Vol 1 (2) ◽

pp. 251-261

Author(s):

Aswanto Muhammad Takwi Hede ◽

Rachmat bin Badani Tempo ◽

Irsyad Rafi

Keyword(s):

Content Analysis ◽

Local Government ◽

Mobile Phones ◽

Qualitative Approach ◽

Important Thing ◽

Analysis Techniques ◽

Library Research ◽

The Law ◽

Do So ◽

At Home

This study aimed to provide explanation and overview related to the law of tarawih prayers at home in an pandemic situation (Covid-19), the law of performing prayers at home with the intention of participating in congregation in the mosque, and the law of reciting the mushaf or mobile phones while leading tarawih prayer. This research used a descriptive qualitative approach using content analysis techniques and library research. The results show that if in an area where the potential for outbreaks of the covid-19 outbreak is high and there has been an appeal from the local government and scholars (MUI), then in these state the more important thing is to perform tarawih prayers at home, both congregationally with family members, and this is the preferred, or individually; (2) invalidity of the prayers of a person who follows the congregational prayers outside the mosque building, where the scholars agree that he must go to the mosque; and (3) it is permissible to recite from the mushaf in the sunnah (optional) prayers, such as tarawih prayer for imams who do not memorize the Koran. As for the obligatory prayers, it is disliked because there is no need to do so. This law also applies to someone who wants to recite the Koran with the software of Koran on mobile phones.

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