XCP for shared-access multi-rate media

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Filipe Abrantes (Author) Other; Manuel Ricardo (Author) FEUP

Journal

Title: Computer Communication Review

Vol. 36

Pages: 29-38

ISSN: 0146-4833

Publisher: ACM

Indexing

ISI Web of Knowledge - 21 Citations

Scopus - 28 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Communication engineering > Telecommunications engineering

FOS: Natural sciences > Computer and information sciences

Other information

Authenticus ID: P-004-JRS

DOI: 10.1145/1140086.1140091

Abstract (EN): The eXplicit Control Protocol (XCP) was developed to overcome some of the limitations of TCP, such as low utilization in high bandwidth delay product networks, unstable throughput, large queue build-up, and limited fairness. XCP, however, requires that each queue controller in a path knows the exact capacity of its link. In shared access media, e.g. IEEE 802.11, knowing the actual capacity of the channel is a difficult task. In this paper we propose modifications to the XCP algorithm that enable the utilization of XCP even when the capacity of a link is unknown. These modifications are validated through simulation. We also present the results of a comparison between the performance of the modified XCP and TCP, where XCP controlled flows result more stable, fairness increases, and the network delay becomes lower. In addition, as the bandwidth delay product increases, XCP is able to maintain near-maximum utilization while TCP decreases utilization.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10