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Possible Collision Avoidance With Off-Line Route Selection (CROSBI ID 157826)

Prilog u časopisu | prethodno priopćenje

Krile, Srećko ; Peraković, Dragan ; Remenar, Vladimir Possible Collision Avoidance With Off-Line Route Selection // Promet, 21 (2009), 6; 415-423. doi: 10.7307/ptt.v21i6.257

Podaci o odgovornosti

Krile, Srećko ; Peraković, Dragan ; Remenar, Vladimir

engleski

Possible Collision Avoidance With Off-Line Route Selection

The paper describes the traffic flow problems in telecommunication networks based on the Internet protocol. The main aim of telecommunication network operator today is to offer an SLA (Service Level Agreement) contract to end users, with provided QoS for different classes of services. In order to achieve this, it is necessary to establish the routes between marginal network nodes meeting the network traffic requirements and optimizing the network performances free of simultaneous flows conflicts. In DiffServ/MPLS networks traffic flows traverse the network simultaneously and there may come to collision of concurrent flows. They are distributed among LSPs (Labeled Switching Paths) related to service classes. In LSP creation the IGP (Interior Gateway Protocol) uses simple on-line routing algorithms based on the shortest path methodology. In highly loaded networks this becomes an insufficient technique. In this suggested approach LSP need not necessarily be the shortest path solution. It can be pre-computed much earlier, possibly during the SLA negotiation process. In that sense an effective algorithm for collision control is developed. It may find a longer but lightly loaded path, taking care of the collision possibility. It could be a very good solution for collision avoidance and for better load-balancing purpose where links are running close to capacity. The algorithm can be significantly improved through heuristic approach. Heuristic options are compared in test-examples and their application for collision control is explained.

collision avoidance ; multi-constraint route selection ; self-organizing systems ; MPLS ; QoS

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Podaci o izdanju

21 (6)

2009.

415-423

objavljeno

0353-5320

1848-4069

10.7307/ptt.v21i6.257

Povezanost rada

Elektrotehnika, Računarstvo, Tehnologija prometa i transport

Poveznice
Indeksiranost