Smartphone Real Time Streaming Service using Parallel TCP Transmission

Computer network conditions that are dynamic and also complex make network operators often make mistakes in the configuration of a network device. However, these mistakes can be resolved by the emergence of a centralized programming approach which is now known as Software Defined Network (SDN). In addition, with the development of information technology, several services in computer networks also grabbed a lot of attention from the world, such as video streaming services. A video streaming service that is so massive is capable of having an impact on data traffic on computer networks. In SDN networks, controllers are a core component of this architecture. Currently, many different types of SDN controllers can be used, however, choosing a controller in an SDN network must be an important concern. This is related to the performance of the SDN controller which is a requirement for SDN network development. This research will analyze the performance of the video streaming service using the Real-time Transport Protocol (RTP) streaming protocol in testing two SDN controllers, namely Pox and Opendaylight. Based on the tests that have been carried out, it produces Quality of Service (QoS) values in the form of throughput, delay, and jitter. The Pox controller excels in the value of QoS delay and throughput. As for the jitter value, both Pox and Opendaylight controllers have good indexes.

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ASSESSMENT OF THE ACCURACY AND PRECISION OF MyRTKnet REAL-TIME SERVICES

Jurnal Teknologi ◽

10.11113/jurnalteknologi.v83.13892 ◽

2020 ◽

Vol 83 (1) ◽

pp. 93-103

Author(s):

Muhammad Afiq Amirrudin ◽

Ami Hassan Md Din ◽

Nur Adilla Zulkifli ◽

Muhammad Asyran Che Amat ◽

Mohammad Hanif Hamden

Keyword(s):

Real Time ◽

Terrestrial Reference Frame ◽

Data Streaming ◽

Time Data ◽

Real Time Kinematic ◽

Accuracy And Precision ◽

Streaming Service ◽

Datum Transformation ◽

Gnss Network

From a network of ninety-six (96) Continuously Operating Reference Stations (CORS), the Department of Survey and Mapping Malaysia (DSMM) has developed a reliable real-time data streaming service known as the Malaysia Real-Time Kinematic GNSS Network (MyRTKnet). MyRTKnet is now operating on Leica SpiderNet system that is configured to provide coordinate to users in Geocentric Datum of Malaysia 2000 (GDM2000). As the name implied, GDM2000 is a geocentric datum for Malaysia, developed based upon the International Terrestrial Reference Frame (ITRF) 2000 or ITRF2000. One could argue that the quality of coordinates provided by MyRTKnet are less optimal as the latest realisation of ITRF at present is ITRF2014. This study aims to investigate the accuracy and precision of the resultant coordinates from MyRTKnet real-time services through a comparison with the control-quality coordinates from a network of post-processed data at some independent points for positioning purpose. Meanwhile for mapping purpose, the coordinates from Network Real-Time Kinematic (NRTK) at selected Cadastral Reference Marks (CRM) points were compared with their known values. The results show that the observed points in ITRF2000 move approximately 37 cm away from the points in ITRF2014 due to the constant movement of Sundaland Block. Meanwhile for the assessment of NRTK technique, there is no significant displacement for coordinates in ITRF2000 but ITRF2014 with the values of 4.4 and 39.8 cm at KDOJ point, respectively. The discrepancy in ITRF2014 could be due to the improper datum transformation procedure.

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CovertCast: Using Live Streaming to Evade Internet Censorship

Proceedings on Privacy Enhancing Technologies ◽

10.1515/popets-2016-0024 ◽

2016 ◽

Vol 2016 (3) ◽

pp. 212-225 ◽

Cited By ~ 4

Author(s):

Richard McPherson ◽

Amir Houmansadr ◽

Vitaly Shmatikov

Keyword(s):

Real Time ◽

Live Streaming ◽

Video Streams ◽

Ip Address ◽

Streaming Services ◽

Streaming Service ◽

Internet Censorship ◽

Censorship Circumvention

Abstract We design, implement, and evaluate CovertCast, a censorship circumvention system that broadcasts the content of popular websites in real-time, encrypted video streams on common live-streaming services such as YouTube. CovertCast does not require any modifications to the streaming service and employs the same protocols, servers, and streaming software as any other user of the service. Therefore, CovertCast cannot be distinguished from other live streams by IP address filtering or protocol fingerprinting, raising the bar for censors.

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