Computer Science – Networking and Internet Architecture
Scientific paper
2006-08-04
Computer Science
Networking and Internet Architecture
Scientific paper
In 3G UMTS, two main transport channels have been provided for downlink data transmission: a common FACH channel and a dedicated DCH channel. The performance of TCP in UMTS depends much on the channel switching policy used. In this paper, we propose and analyze three new basic threshold-based channel switching policies for UMTS that we name as QS (Queue Size), FS (Flow Size) and QSFS (QS & FS combined) policy. These policies significantly improve over a modified threshold policy in [1] by about 17% in response time metrics. We further propose and evaluate a new improved switching policy that we call FS-DCH (at-least flow-size threshold on DCH) policy. This policy is biased towards short TCP flows of few packets and is thus a cross-layer policy that improves the performance of TCP by giving priority to the initial few packets of a flow on the fast DCH channel. Extensive simulation results confirm this improvement for the case when number of TCP connections is low.
Altman Eitan
Barman Dhiman
Kelif Jean-Marc
Kumar Dinesh
No associations
LandOfFree
New Cross-Layer Channel Switching Policy for TCP Transmission on 3G UMTS Downlink does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with New Cross-Layer Channel Switching Policy for TCP Transmission on 3G UMTS Downlink, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and New Cross-Layer Channel Switching Policy for TCP Transmission on 3G UMTS Downlink will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-48838