TY - JOUR
T1 - Transmitting real-time VBR traffic with QoS control in a timed token medium access control network
AU - Ng, J. K.Y.
AU - Lee, V. C.S.
N1 - Funding Information:
The work reported in this paper was supported in part by the RGC Earmarked Research Grant under RGC/97-98/54, and by the FRG under FRG/96-97/II-103.
PY - 1999/6/25
Y1 - 1999/6/25
N2 - By exploring the characteristics of the Moving Pictures Experts Group (MPEG) coded frame sequence and the expected quality of service (QoS) of video applications, we have designed different transmission strategies for transmitting real-time VBR videos over a computer network. In this article, we present three MPEG video transmission schemes with the objective of increasing the maximum number of video streams that can be supported by the underlying network without sacrificing much on the video quality. Multiple classes of the MPEG video are examined in this study. These data are captured from real video programmes and we categorized these video clips according to their traffic burstiness and workload characteristics. The results reveal that, by employing the intentional delay scheme, we could improve the performance by 67-166%. In the case of applications, allowing different levels of QoS, the QoS Control Scheme alone can improve the performance by 77 and 112% when the QoS level is set to 90 and 60%, respectively. When we combined these two schemes together and formed our third scheme, namely the QoS Control with intentional delay, the performance improvement can be pushed to 271%, which is a dramatic improvement over the default uncontrolled transmission scheme.
AB - By exploring the characteristics of the Moving Pictures Experts Group (MPEG) coded frame sequence and the expected quality of service (QoS) of video applications, we have designed different transmission strategies for transmitting real-time VBR videos over a computer network. In this article, we present three MPEG video transmission schemes with the objective of increasing the maximum number of video streams that can be supported by the underlying network without sacrificing much on the video quality. Multiple classes of the MPEG video are examined in this study. These data are captured from real video programmes and we categorized these video clips according to their traffic burstiness and workload characteristics. The results reveal that, by employing the intentional delay scheme, we could improve the performance by 67-166%. In the case of applications, allowing different levels of QoS, the QoS Control Scheme alone can improve the performance by 77 and 112% when the QoS level is set to 90 and 60%, respectively. When we combined these two schemes together and formed our third scheme, namely the QoS Control with intentional delay, the performance improvement can be pushed to 271%, which is a dramatic improvement over the default uncontrolled transmission scheme.
UR - http://www.scopus.com/inward/record.url?scp=0032682239&partnerID=8YFLogxK
U2 - 10.1016/S0140-3664(99)00061-4
DO - 10.1016/S0140-3664(99)00061-4
M3 - Journal article
AN - SCOPUS:0032682239
SN - 0140-3664
VL - 22
SP - 930
EP - 941
JO - Computer Communications
JF - Computer Communications
IS - 10
ER -