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Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment

Toni MALINOVSKI [1] , Vladimir TRAJKOVIK [2] , Tatjana VASILEVA-STOJANOVSKA [3]

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Videoconferencing technology is a successful tool for expanding possibilities for collaborative and distance learning, while bridging the distance between the teacher and students, providing time and cost savings. Recently, the focus in literature and practice for quality requirements are shifting from deterministic behavior of the infrastructure in videoconferencing learning environments to students’ Quality of Experience, as subjective measure that involves human dimensions. Hence, this study evaluates the impact of different Quality of Service mechanisms utilized in the infrastructure on students’ Quality of Experience in videoconferencing learning environments. It involved 263 faculty students that participated in 42 learning sessions via videoconferencing during their academic activities, while the infrastructure was subjected to Quality of Service mechanism in the network, as well as application enhancement in the videoconferencing platform, or both. The performance counters from the technical equipment and results from the survey regarding students’ perceived experience, showed definite Quality of Service to Quality of Experience correlation. When network and application Quality of Service were considered complementary, students’ Quality of Experience was in average 18.5% higher compared to network and 15% to application Quality of Service implementations. Similarly, best technical performance was achieved when both mechanisms were consider as a whole, such as 34% decrease in average transmit delay compared to application and 62.5% to network Quality of Service mechanisms, etc. Finally, application controls had greater impact on perceived students’ Quality of Experience than the network ones, which correlated to performance behavior of the infrastructure.Videoconferencing technology is a successful tool for expanding possibilities for collaborative and distance learning, while bridging the distance between the teacher and students, providing time and cost savings. Recently, the focus in literature and practice for quality requirements are shifting from deterministic behavior of the infrastructure in videoconferencing learning environments, or quality of service (QoS), to students’ quality of experience (QoE), as subjective measure that involves human dimensions. Hence, this study evaluates the impact of different QoS mechanisms utilized in the infrastructure on students’ QoE in videoconferencing learning environments. It involved 263 faculty students that participated in 42 learning sessions via videoconferencing during their academic activities, while the infrastructure was subjected to QoS mechanism in the network (NQoS), as well as application enhancement in the videoconferencing platform (AQoS), or both. The performance counters from the technical equipment and results from the survey regarding students’ perceived QoE after each learning session, showed definite QoS/QoE correlation. Even though students’ were not aware of the technical setup during the learning sessions, the highest level of students’ QoE was achieved when NQoS and AQoS were considered complementary, rather than as a single mechanism. In addition, AQoS controls had greater impact on perceived students’ QoE than NQoS.

Videoconferencing, learning environments, Quality of Service, Quality of Experience, Quality of Service/Quality of Experience correlation
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Birincil Dil en Sosyal Articles Yazar: Toni MALINOVSKI (Sorumlu Yazar) Yazar: Vladimir TRAJKOVIK Yazar: Tatjana VASILEVA-STOJANOVSKA
 Bibtex @araştırma makalesi { tojde444614, journal = {Turkish Online Journal of Distance Education}, issn = {1302-6488}, address = {Anadolu Üniversitesi}, year = {2018}, volume = {19}, pages = {24 - 37}, doi = {10.17718/tojde.444614}, title = {Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment}, key = {cite}, author = {TRAJKOVIK, Vladimir and MALINOVSKI, Toni and VASILEVA-STOJANOVSKA, Tatjana} } APA MALINOVSKI, T , TRAJKOVIK, V , VASILEVA-STOJANOVSKA, T . (2018). Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment. Turkish Online Journal of Distance Education, 19 (3), 24-37. DOI: 10.17718/tojde.444614 MLA MALINOVSKI, T , TRAJKOVIK, V , VASILEVA-STOJANOVSKA, T . "Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment". Turkish Online Journal of Distance Education 19 (2018): 24-37 Chicago MALINOVSKI, T , TRAJKOVIK, V , VASILEVA-STOJANOVSKA, T . "Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment". Turkish Online Journal of Distance Education 19 (2018): 24-37 RIS TY - JOUR T1 - Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment AU - Toni MALINOVSKI , Vladimir TRAJKOVIK , Tatjana VASILEVA-STOJANOVSKA Y1 - 2018 PY - 2018 N1 - doi: 10.17718/tojde.444614 DO - 10.17718/tojde.444614 T2 - Turkish Online Journal of Distance Education JF - Journal JO - JOR SP - 24 EP - 37 VL - 19 IS - 3 SN - 1302-6488- M3 - doi: 10.17718/tojde.444614 UR - http://dx.doi.org/10.17718/tojde.444614 Y2 - 2018 ER - EndNote %0 Turkish Online Journal of Distance Education Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment %A Toni MALINOVSKI , Vladimir TRAJKOVIK , Tatjana VASILEVA-STOJANOVSKA %T Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment %D 2018 %J Turkish Online Journal of Distance Education %P 1302-6488- %V 19 %N 3 %R doi: 10.17718/tojde.444614 %U 10.17718/tojde.444614 ISNAD MALINOVSKI, Toni , TRAJKOVIK, Vladimir , VASILEVA-STOJANOVSKA, Tatjana . "Impact of Different Quality of Service Mechanisms on Students' Quality of Experience in Videoconferencing Learning Environment". Turkish Online Journal of Distance Education 19 / 3 (Temmuz 2018): 24-37. http://dx.doi.org/10.17718/tojde.444614