TITLE:
Influences of Network Delay on Quality of Experience for Soft Objects in Networked Real-Time Game with Haptic Sense
AUTHORS:
Mya Sithu, Yutaka Ishibashi, Pingguo Huang, Norishige Fukushima
KEYWORDS:
Networked Real-Time Game, Virtual Environment, Balloon Bursting Game, Haptic Interface Devices, Network Delay, Quality of Experience, Operability, Fairness
JOURNAL NAME:
International Journal of Communications, Network and System Sciences,
Vol.8 No.11,
November
18,
2015
ABSTRACT: In this paper, we investigate the
influences of network delay on QoE (Quality of Experience) such as the
operability of haptic interface device and the fairness between players for
soft objects in a networked real-time game subjectively and objectively. We
handle a networked balloon bursting game in which two players burst balloons
(i.e., soft objects) in a 3D virtual space by using haptic interface devices,
and the players compete for the number of burst balloons. As a result, we find
that the operability depends on the network delay from the local terminal to
the other terminal, and the fairness is mainly dependent on the difference in
network delay between the players’ terminals. We confirm that there exists a
trade-off relationship between the operability and the fairness. We also see
that the contribution of the fairness is larger than that of the operability to
the comprehensive quality (i.e., the weighted sum of the operability and
fairness). Assessment results further show that the output timing of terminals
should be adjusted to the terminal which has the latest output timing to
maintain the fairness when the difference in network delay between the
terminals is large. In this way, the comprehensive quality at each terminal can
be maintained as high as possible.