PFS scheme for forcing better service in best effort IP network

• Autorzy: Fudała M. , Burakowski W.
• Języki publikacji: EN

Abstrakty

EN

The paper presents recent results corresponding to a new strategy for source traffic generating, named priority forcing scheme (PFS), allowing Internet users for getting better than best effort service in IP network. The concept of PFS assumes that an application, called PFS application, sends to the network a volume of additional traffic for the purpose of making the reservations for the data traffic in the overloaded router queues along the packet path in the IP network. The emitted redundant packets, named R-packets, should be rather of small size comparing to the data packets, named D-packets. The PFS scheme assumes that the R-packets waiting in a queue can be replaced by the arriving D-packets and belonging to the same flow. In this way, the D-packets can experience a prioritised service comparing to the packets produced by a non-PFS application. Notice that the proposed solution does not require any quality of service (QoS) mechanisms implemented in the network, like scheduler, dropping, marking etc., except R- and D-packets identification and replacing. We discuss the PFS efficiency for forcing priority in the overloaded conditions. Moreover simple system analysis is also presented. Finally, the profits of using PFS scheme are illustrated by examples corresponding to FTP (TCP controlled traffic) and VoIP (UDP streaming traffic) applications.

Słowa kluczowe

EN

IP-based network; better than best effort service; priority forcing scheme

• Wydawca: Instytut Łączności - Państwowy Instytut Badawczy
• Czasopismo: Journal of Telecommunications and Information Technology
• Rocznik: 2004
• Tom: nr 2
• Strony: 23--28
• Opis fizyczny: Bibliogr. 11 poz., tab., rys.

Twórcy

autor

Fudała M.

• Institute of Telecommunications, Warsaw University of Technology, Nowowiejska st 15/19, 00-665 Warsaw

autor

Burakowski W.

• Institute of Telecommunications, Warsaw University of Technology, Nowowiejska st 15/19, 00-665 Warsaw

Bibliografia

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