scholarly journals Perancangan Aplikasi Voice Chat dengan Socket Programming pada Android untuk Jaringan Lokal

2020 ◽  
Vol 10 (2) ◽  
pp. 113-117
Author(s):  
Allyza Nanda Purwari ◽  
Nugroho Suharto ◽  
Abdul Rasyid
Keyword(s):  
Access Point ◽  
Application Programming ◽  
Voice Chat ◽  
Point To Point

Aplikasi voice chat merupakan aplikasi yang dirancang untuk menggantikan fungsi HT pada smartphone android. Selain dapat melakukan panggilan dengan suara, aplikasi ini juga dapat digunakan untuk melakukan komunikasi dengan text. Aplikasi ini tidak memerlukan jaringan seluler untuk komunikasi, cukup dengan tersambung pada jaringan yang disediakan oleh access point. Agar aplikasi dapat digunakan tanpa menggunakan jaringan seluler, maka pada saat pembuatan aplikasi memerlukan adanya socket. Socket merupakan komponen/API (Application Programming) yang ada pada software android studio. Sedangkan socket programming merupakan cara untuk menggunakan komponen/API socket untuk membuat sebuah aplikasi salah satunya aplikasi voice chat. Aplikasi yang sudah dibuat nantinya akan diisntall pada beberapa smartphone android. Setelah terinstall, masing-masing smartphone dihubungkan pada jaringan yang disediakan oleh access point yang sudah ada agar dapat melakukan komunikasi dengan suara maupun text. Komunikasi yang dilakuakan antar smartphone satu dengan yang lainnya secara point to point. Hasil pengujian dapat disimpulkan bahwa aplikasi ini dapat digunakan untuk melakukan komunikasi dengan suara maupun text, selama user berada pada jaringan yang sama. Dan juga aplikasi ini dapat digunakan disegala jenis handphone Android untuk melakukan komunikasi dengan suara namun pada komunikasi dengan text hanya bisa digunakan pada merk handphone tertentu saja

The Concept of Extensible Authentication Protocol for Mobile Equipment to Heterogeneous Network (EAP-M2H)

2011 ◽  
Vol 145 ◽  
pp. 204-208
Author(s):  
Hsia Hung Ou ◽  
Hao Hsiang Ku ◽  
Te Yu Chen
Keyword(s):  
Mobile Devices ◽  
Heterogeneous Network ◽  
Access Point ◽  
Authentication Protocol ◽  
Service Network ◽  
Heavy Load ◽  
Authentication Mechanism ◽  
Widespread Acceptance ◽  
Point To Point ◽  
Extensible Authentication Protocol

Extensible Authentication Protocol (EAP) is a universal authentication framework defined by RFC3748 and updated by RFC5247. It is not a specific authentication mechanism for exclusive system and then the widespread acceptance and implementation in wireless networks or other Point-to-Point (P2P) connections. A number of vendor specific EAP methods were proposed for special purpose such as EAP-MD5, EAP-TLS, EAP-TTLS, EAP-PEAP, LEAP, SPEKE, EAP-SIM, EAP-AKA, EAP-FAST, and so on. All of them have a common characteristic that the client submitted his Security Association (SA) to the neighbor Access Point (AP), then AP forward it to identify his validity by Authentication Authorization Accounting (AAA) server of both sides. Although these EAPs are design to meet the widespread authentication demands. But in fact they have the independent authentication procedure respectively. That is they are incompatible with each other. For mobile devices, in order to meet the needs of different connection it had to support many of the EAPs. This situation for the most mobile devices is a heavy load and result the inconvenient which move in the different service network. This paper devotes in solves this situation. For this goal, an extensible authentication protocol for mobile equipment to heterogeneous network (EAP-M2H) is provided in the paper. EAP-M2H development from the EAP-AKA and improve their applicability and compatibility in heterogeneous network.

scholarly journals Implementasi Point to Point Jaringan Internet Nirkabel di SMA Universitas Klabat

2016 ◽  
Vol 2 (2) ◽  
pp. 240
Author(s):  
Jimmy Moedjahedy
Keyword(s):  
Life Cycle ◽  
Access Point ◽  
Base Station ◽  
Network Development ◽  
Development Life Cycle ◽  
Point To Point

Point to Point jaringan nirkabel merupakan solusi untuk menghubungkan dua jaringan yang berada dilokasi yang berbeda dan sulit untuk dilewati kabel jaringan. SMA Universitas Klabat walaupun terletak satu kawasan dengan kampus utama universitas namun lokasi gedung agak jauh dan sulit untuk dilewati kabel. Tujuan dari penelitian ini adalah untuk membangun insfrastruktur jaringan internet lewat point to point, analisis dan desain access point yang akan digunakan serta pembagian bandwidth yang merata ke setiap client. Metode penelitian yang digunakan dalam penelitian ini adalah Network Development Life Cycle dengan tahapan analisis, desain, simulasi, implementasi, monitoring dan manajemen. Base station dan client yang digunakan adalah nano station M5 ubiquiti, access point yang digunakan untuk koneksi jaringan nirkabel disetiap gedung adalah ubiquiti UAP dan pembagian bandwidth diatur menggunakan mikrotik router board. Hasil implementasi dari penelitian ini adalah koneksi internet dapat tersalur dari kampus utama universitas ke SMA serta dapat digunakan oleh siswa dan guru baik diruangan kelas maupun dikantor.Kata kunci—Point to Point, Bandwidth, Jaringan Nirkabel, Ubiquiti

Sentralisasi Manajemen Hotspot Menggunakan Transparent Bridge Tunnel EoIP over SSTP

2017 ◽  
Vol 16 (2) ◽  
pp. 86 ◽  
Author(s):  
I Putu Hariyadi
Keyword(s):  
Access Point ◽  
Virtual Private Network ◽  
Academic Community ◽  
Ip Address ◽  
Site Type ◽  
Local Reference ◽  
New Form ◽  
Point To Point ◽  
Private Network ◽  
Transparent Bridge

STMIK Bumigora is the first computer college in the province of West Nusa Tenggara (NTB). There are 11 hotspots spread across the campus to provide Internet services through a wireless connection for the academic community. The increasing number of hotspots that must be managed with locations scattered in various Mikrotik routers hence make the process of management and monitoring hotspots become complex, ineffective and efficient. Centralized campus hotspot management using a transparent bridge EoIP over SSTP can help solve the problems at hand. Ethernet over IP (EoIP) Tunneling is a Mikrotik RouterOS protocol that creates an Ethernet tunnel between routers over IP connections. EoIP tunnel built on SSTP tunnel (EoIP over SSTP) with Site-to-Site type. SSTP is a new form of Virtual Private Network (VPN) tunnel that provides a mechanism for encapsulating Point-to-Point Protocol (PPP) traffic through the SSL path of the HTTPS protocol. The IP address of the SSTP interface is used as the local reference and remote address of the EoIP over SSTP tunnel. The application of bridging on EoIP interfaces and interfaces connected to Access Point devices forms a logical network so that the management and monitoring of hotspot services can be performed centrally on one router.

scholarly journals Seamless Synthetic Aperture Radar Archive for Interferometry Analysis

2014 ◽  
Vol XL-1 ◽  
pp. 65-72
Author(s):  
S. Baker ◽  
C. Baru ◽  
G. Bryson ◽  
B. Buechler ◽  
C. Crosby ◽  
...  
Keyword(s):  
Synthetic Aperture Radar ◽  
Access Point ◽  
Application Programming Interface ◽  
Synthetic Aperture ◽  
Srtm Dem ◽  
Data Products ◽  
Application Programming ◽  
Interferometric Sar ◽  
Programming Interface ◽  
Aperture Radar

The NASA Advancing Collaborative Connections for Earth System Science (ACCESS) seamless synthetic aperture radar (SAR) archive (SSARA) project is a collaboration between UNAVCO, the Alaska Satellite Facility (ASF), the Jet Propulsion Laboratory (JPL), and OpenTopography at the San Diego Supercomputer Center (SDSC) to design and implement a seamless distributed access system for SAR data and derived interferometric SAR (InSAR) data products. A unified application programming interface (API) has been created to search the SAR archives at ASF and UNAVCO, 30 and 90-m SRTM DEM data available through OpenTopography, and tropospheric data from the NASA OSCAR project at JPL. The federated query service provides users a single access point to search for SAR granules, InSAR pairs, and corresponding DEM and tropospheric data products from the four archives, as well as the ability to search and download pre-processed InSAR products from ASF and UNAVCO.

scholarly journals SIMULATION Wi-Fi NETWORK WITH WIRELESS DISTRIBUTION SYSTEM (WDS) TOPOLOGY

2017 ◽  
Vol 16 (5) ◽  
pp. 6920-6925
Author(s):  
Rohmat Tulloh ◽  
Hasanah Putri ◽  
Dwi Andi Nurmantris ◽  
Desi Dwi Prihatin
Keyword(s):  
Distribution System ◽  
Wireless Lan ◽  
Access Point ◽  
Wireless Internet ◽  
Network Resources ◽  
Measurement Results ◽  
Policy Models ◽  
Point To Point ◽  
Better Than ◽  
Internet Network

At present, the need for internet access in public area using wireless connections is increasing drastically and this should be supported by good network infrastructure. Wireless network is one of the best alternative in building a practical internet network. WDS is a system to develop wireless internet network without having to use cable as its backbone for access point but instead utilize wireless path from its access point. The problems that often arise in the design of wireless LAN network is the poor signal received by the user due to the installation of an access point that is poor location-wise. This is because at some point it is very difficult to install Access point using cable because the distance is too far from the existing router. In this paper, we propose to use three scenario of WDS mode to compare its performance. We investigate three different topology policy models of the WDS Bridge point-to-point, WDS Bridge point to multipoint and WDS repeater. The use of these three topologies aims to reach locations that are not covered by wireless LAN network, in addition this method can save the use of network resources such as LAN cables. Based on the simulation results, it is found that the topology point to point gives better value but it generated higher delays. The delay generated on point to point is higher than other topologies. Meanwhile, the measurement results are not much different on topology point to multipoint with repeater topology. The point to multipoint topology is slightly better than the repeater of the three QoS parameters.

scholarly journals Analisis, Perancangan, Dan Implementasi Jaringan Wireless Point To Point Antara Kampus A Dan Kampus B Universitas Negeri Jakarta

2017 ◽  
Vol 1 (2) ◽  
pp. 134-141 ◽  
Author(s):  
M. Ficky Duskarnaen ◽  
Febri Nurfalah
Keyword(s):  
Fault Tolerance ◽  
Research And Development ◽  
Packet Loss ◽  
Free Space ◽  
Fresnel Zone ◽  
Access Point ◽  
Wireless Access ◽  
Line Of Sight ◽  
Point To Point ◽  
Wireless Access Point

Tujuan dari penelitian ini adalah membangun jaringan wireless point to point antara Kampus A dan Kampus B Universitas Negeri Jakarta. Penelitian ini menggunakan metode research and development yang meliputi kegiatan analisis, perancangan, dan implementasi. Jalur komunikasi untuk menghubungkan Kampus A dan Kampus B Universitas Negeri Jakarta menggunakan jalur kabel Telkom, jalur tersebut digunakan sebagai backbone utama. Karena belum adanya penerapan fault tolerance pada jalur tersebut maka jaringan wireless point to point perlu dipersiapkan sebagai alternatif apabila terjadi kegagalan. Analisis kondisi lokasi pemasangan wireless yaitu ketinggian Gedung Sertifikasi 42 m dan Gedung Rusun Mahasiswa 17 m, dua lokasi berjarak 911 m dengan besar free space loss 99,24 dB – 99,49 dB, line of sight terbebas dari penghalang, dan radius fresnel zone 4,27 m – 4,33 m (BTS Telkom) dan 5,24 m – 5,32 m (Gedung Rabbani) dalam kondisi tidak terhalang. Perencanaan desain jaringan dalam mode bridge – station bridge, menggunakan perangkat keras Mikrotik Metal 2SHPn 30 dBm, Antena Grid 24 dBi, kabel pigtail LMR-400, dan tower triangle. Jaringan wireless point to point berhasil diimplementasikan dengan hasil pengujian yaitu terdapat banyak interferensi dari wireless access point lain, sambungan berhasil dilakukan dengan 0% packet loss, kekuatan sinyal -64,75 dBm, SNR 41,25 dB, CCQ 86,14%, dan throughput 11,15 Mbps.

scholarly journals Wireless Communication on PLC Using Access Point TP-Link TL-WN722N

2021 ◽  
Vol 5 (1) ◽  
pp. 40-44
Author(s):  
Rendi Priyatna ◽  
Asep Andang ◽  
Firmansyah Maulana Sugiartana Nursuwars
Keyword(s):  
Wireless Communication ◽  
Data Transmission ◽  
Data Communication ◽  
Access Point ◽  
Wireless Data ◽  
System Operation ◽  
Average Data ◽  
Technological Developments ◽  
Wireless Data Communication ◽  
Point To Point

Technological developments are a requirement for more practical system operation. One example is in data transmission. Wireless data communication is currently very popular. In today's revolution 4.0, of course, the use of cables in data transmission media is rarely used, but not every device supports wireless data communication. One of them is the PLC (Programable Logic Controller). As for additional extensions for PLCs to communicate wirelessly, they are sold separately and, of course, the price is quite expensive. Therefore, a solution for PLCs to communicate wirelessly using the TL-WN722N access point is widely available on the market. Measurements are made with the concept of point to point by looking at the results of modbus scans using Modscan32 on a PC server. The results show that the optimal maximum distance is 80 meters, with an average data transmission time of 1 second.

scholarly journals Nesnelerin interneti teknolojileri kullanılarak Wi-Fi MAC Adresi tabanlı insan toplulukları izleme ve analiz sistemi

2020 ◽  
Vol 3 (1) ◽  
pp. 642-649
Author(s):  
Turgay Tugay Bilgin ◽  
Recep Tayyib Aksakal
Keyword(s):  
Access Control ◽  
Ieee 802.11 ◽  
Access Point ◽  
Application Programming Interface ◽  
Media Access Control ◽  
Media Access ◽  
Application Programming ◽  
Programming Interface ◽  
Wireless Fidelity

Bu çalışmada, belirli bir konumdan geçen insan topluluklarının hareketlilik analizini yapmayı sağlayacak bir system geliştirilmiştir. Bu çalışmada, amaç belirli bir lokasyondaki insan trafiğini ve yoğunluğunu tespit edebilmektir. Bu amacı, KVKK sınırlamalarını aşmadan Wi-Fi paketlerini yakalayarak ve analiz ederek gerçekleştirdik. ESP8266 mikrokontrol kartı kullanılarak kapsama alanındaki Wi-Fi (Wireless Fidelity) trafiği dinlenmiştir. Yakalanan IEEE 802.11 paketlerinin MAC (Media Access Control) header kısmı alınarak, ortamdaki AP (Access Point) cihazlar ve STA (Station) cihazlar belirlenmiştir. Belirlenen STA cihazların MAC adresleri bir Wi-Fi ağına bağlanılarak Bulut Tabanlı API’ye (Application Programming Interface) gönderilmiş ve donanım üreticisi (vendor) tespiti yapılarak veritabanına kaydedilmiştir. Geliştirilen yönetim paneli sayesinde belirli bir konumdan geçen kalabalıklar Günlük, Haftalık, Aylık veya girilen zaman dilimine bağlı olarak analiz edilebilmektedir. Ayrıca Cihaz Sayısı/Vendor ve Cihaz Sayısı/Zaman grafikleri de çizdirilmiştir.

Finding the Right Problems: Some HREM Applications to Interfaces

1984 ◽  
Vol 42 ◽  
pp. 376-379
Author(s):  
D. Cherns
Keyword(s):  
Grain Boundaries ◽  
High Resolution Electron Microscopy ◽  
Boundary Structure ◽  
Atomic Structures ◽  
Grain Boundary Structure ◽  
Resolution Electron ◽  
Point To Point ◽  
The Right ◽  
New Generation ◽  
Better Than

The use of high resolution electron microscopy (HREM) to determine the atomic structure of grain boundaries and interfaces is a topic of great current interest. Grain boundary structure has been considered for many years as central to an understanding of the mechanical and transport properties of materials. Some more recent attention has focussed on the atomic structures of metalsemiconductor interfaces which are believed to control electrical properties of contacts. The atomic structures of interfaces in semiconductor or metal multilayers is an area of growing interest for understanding the unusual electrical or mechanical properties which these new materials possess. However, although the point-to-point resolutions of currently available HREMs, ∼2-3Å, appear sufficient to solve many of these problems, few atomic models of grain boundaries and interfaces have been derived. Moreover, with a new generation of 300-400kV instruments promising resolutions in the 1.6-2.0 Å range, and resolutions better than 1.5Å expected from specialist instruments, it is an appropriate time to consider the usefulness of HREM for interface studies.

An x-ray microprobe based upon a close-coupled focal-spot / glass capillary arrangement

1992 ◽  
Vol 50 (2) ◽  
pp. 1758-1759
Author(s):  
D. A. Carpenter ◽  
M. A. Taylor
Keyword(s):  
Imaging Techniques ◽  
Fluorescence Analysis ◽  
High Sensitivity ◽  
Specimen Preparation ◽  
X Rays ◽  
Glass Capillary ◽  
Close Coupling ◽  
X Ray ◽  
Point To Point ◽  
Beam Damage

The development of intense sources of x rays has led to renewed interest in the use of microbeams of x rays in x-ray fluorescence analysis. Sparks pointed out that the use of x rays as a probe offered the advantages of high sensitivity, low detection limits, low beam damage, and large penetration depths with minimal specimen preparation or perturbation. In addition, the option of air operation provided special advantages for examination of hydrated systems or for nondestructive microanalysis of large specimens.The disadvantages of synchrotron sources prompted the development of laboratory-based instrumentation with various schemes to maximize the beam flux while maintaining small point-to-point resolution. Nichols and Ryon developed a microprobe using a rotating anode source and a modified microdiffractometer. Cross and Wherry showed that by close-coupling the x-ray source, specimen, and detector, good intensities could be obtained for beam sizes between 30 and 100μm. More importantly, both groups combined specimen scanning with modern imaging techniques for rapid element mapping.

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