Showing papers by "George Xylomenos published in 2003"
22 Apr 2003
TL;DR: This paper simulated file transfer and WWW browsing over TCP and continuous media distribution over UDP, in conjunction with various link layer schemes, to reveal that WW browsing has substantially different behavior than file transfer, that existing TCP enhancement schemes have limited applicability and that UDP applications are best served by schemes inappropriate for TCP.
Abstract: Internet application performance over wireless links is disappointing due to wireless impairments that adversely affect higher layers. This paper focuses on link layer enhancement mechanisms that hide wireless errors from the rest of the Internet. We simulated file transfer and WWW browsing over TCP and continuous media distribution over UDP, in conjunction with various link layer schemes. Our results reveal that WW browsing has substantially different behavior than file transfer, that existing TCP enhancement schemes have limited applicability and that UDP applications are best served by schemes inappropriate for TCP. Therefore, multiple link layer solutions are needed to optimize the performance of diverse applications.
14 citations
23 Sep 2003
TL;DR: A multi-service link layer architecture is presented that simultaneously enhances the performance of diverse applications by supporting multiple error recovery mechanisms in parallel and shows that each application achieves similar improvements as when it operates alone over its preferred scheme, despite the parallel execution of diverse Applications.
Abstract: Although TCP and UDP application performance over wireless links may be substantially improved via link layer error recovery, different schemes are appropriate for each application class. We present a multi-service link layer architecture that simultaneously enhances the performance of diverse applications by supporting multiple error recovery mechanisms in parallel. We simulated concurrent file transfers and WWW browsing over TCP and continuous media distribution over UDP using our architecture. The results show that each application achieves similar improvements as when it operates alone over its preferred scheme, despite the parallel execution of diverse applications.
9 citations