TY - GEN
T1 - TCP-MR
T2 - HUT-ICCE 2008 - 2nd International Conference on Communications and Electronics
AU - Kim, Inhee
AU - Kim, Yunmo
AU - Kang, Moonsoo
AU - Mo, Jeonghoon
AU - Kwak, Daehan
PY - 2008
Y1 - 2008
N2 - Real-time multimedia applications such as VoIP and video conferencing require a minimum bit rate to ensure an acceptable level of quality of service (QoS) since they are delay-sensitive. In this regard, UDP is preferred to support the timeliness of real-time multimedia applications, but does not satisfy high video/audio quality when packet losses exist. Although TCP is generally used for elastic data traffic, it also can be used as an alternative to support better multimedia services due to its reliability. However, TCP is not suitable in that it chooses reliability over timeliness. This paper proposes a novel mechanism called TCP-MR (Minimum Rate) which simultaneously realizes timeliness and reliability by achieving end-to-end minimum rate guarantee over best-effort networks. To accomplish this goal, TCP-MR controls two congestion windows to reserve network bandwidth, adopts a persistent congestion detection algorithm to quickly react to continuous congestion state, and employs an enhanced loss recovery algorithm to shorten the recovery time of multiple packet losses. Only with modifications of the sender's side, we expect our proposal to be easily and widely deployed.
AB - Real-time multimedia applications such as VoIP and video conferencing require a minimum bit rate to ensure an acceptable level of quality of service (QoS) since they are delay-sensitive. In this regard, UDP is preferred to support the timeliness of real-time multimedia applications, but does not satisfy high video/audio quality when packet losses exist. Although TCP is generally used for elastic data traffic, it also can be used as an alternative to support better multimedia services due to its reliability. However, TCP is not suitable in that it chooses reliability over timeliness. This paper proposes a novel mechanism called TCP-MR (Minimum Rate) which simultaneously realizes timeliness and reliability by achieving end-to-end minimum rate guarantee over best-effort networks. To accomplish this goal, TCP-MR controls two congestion windows to reserve network bandwidth, adopts a persistent congestion detection algorithm to quickly react to continuous congestion state, and employs an enhanced loss recovery algorithm to shorten the recovery time of multiple packet losses. Only with modifications of the sender's side, we expect our proposal to be easily and widely deployed.
KW - End-to-end rate guarantee
KW - QoS
KW - Real-time multimedia
KW - TCP
KW - UDP
UR - http://www.scopus.com/inward/record.url?scp=51549092730&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:51549092730
SN - 9781424424269
T3 - HUT-ICCE 2008 - 2nd International Conference on Communications and Electronics
SP - 80
EP - 85
BT - HUT-ICCE 2008 - 2nd International Conference on Communications and Electronics
Y2 - 4 June 2008 through 6 June 2008
ER -