### Abstract

An important aspect of quality-of-service (QoS) provisioning in integrated networks is the ability to find a feasible route that satisfies end-to-end QoS requirements of a connection request while efficiently using network resources. In general, finding a path subject to multiple additive constraints (e.g., delay, delay-jitter) is an NP-complete problem. For this problem, we propose a randomized heuristic algorithm with polynomial-time complexity. Our algorithm first prunes all the links that cannot be on any feasible paths. It then uses a randomized heuristic search to find a feasible path, if one exists. The worst-case computational complexity of our algorithm is O(n^{2}), where n is the number of nodes. The storage complexity of the algorithm is O(n). Using extensive simulations, we show that our algorithm gives very high success rate in finding feasible paths.

Original language | English (US) |
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Title of host publication | Conference Record / IEEE Global Telecommunications Conference |

Publisher | IEEE |

Pages | 1694-1698 |

Number of pages | 5 |

Volume | 3 |

State | Published - 1999 |

Event | 1999 IEEE Global Telecommunication Conference - GLOBECOM'99 - Rio de Janeiro, Braz Duration: Dec 5 1999 → Dec 9 1999 |

### Other

Other | 1999 IEEE Global Telecommunication Conference - GLOBECOM'99 |
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City | Rio de Janeiro, Braz |

Period | 12/5/99 → 12/9/99 |

### Fingerprint

### ASJC Scopus subject areas

- Electrical and Electronic Engineering
- Global and Planetary Change

### Cite this

*Conference Record / IEEE Global Telecommunications Conference*(Vol. 3, pp. 1694-1698). IEEE.

**Randomized algorithm for finding a path subject to multiple QoS constraints.** / Korkmaz, Turgay; Krunz, Marwan M.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*Conference Record / IEEE Global Telecommunications Conference.*vol. 3, IEEE, pp. 1694-1698, 1999 IEEE Global Telecommunication Conference - GLOBECOM'99, Rio de Janeiro, Braz, 12/5/99.

}

TY - GEN

T1 - Randomized algorithm for finding a path subject to multiple QoS constraints

AU - Korkmaz, Turgay

AU - Krunz, Marwan M

PY - 1999

Y1 - 1999

N2 - An important aspect of quality-of-service (QoS) provisioning in integrated networks is the ability to find a feasible route that satisfies end-to-end QoS requirements of a connection request while efficiently using network resources. In general, finding a path subject to multiple additive constraints (e.g., delay, delay-jitter) is an NP-complete problem. For this problem, we propose a randomized heuristic algorithm with polynomial-time complexity. Our algorithm first prunes all the links that cannot be on any feasible paths. It then uses a randomized heuristic search to find a feasible path, if one exists. The worst-case computational complexity of our algorithm is O(n2), where n is the number of nodes. The storage complexity of the algorithm is O(n). Using extensive simulations, we show that our algorithm gives very high success rate in finding feasible paths.

AB - An important aspect of quality-of-service (QoS) provisioning in integrated networks is the ability to find a feasible route that satisfies end-to-end QoS requirements of a connection request while efficiently using network resources. In general, finding a path subject to multiple additive constraints (e.g., delay, delay-jitter) is an NP-complete problem. For this problem, we propose a randomized heuristic algorithm with polynomial-time complexity. Our algorithm first prunes all the links that cannot be on any feasible paths. It then uses a randomized heuristic search to find a feasible path, if one exists. The worst-case computational complexity of our algorithm is O(n2), where n is the number of nodes. The storage complexity of the algorithm is O(n). Using extensive simulations, we show that our algorithm gives very high success rate in finding feasible paths.

UR - http://www.scopus.com/inward/record.url?scp=0033294989&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033294989&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:0033294989

VL - 3

SP - 1694

EP - 1698

BT - Conference Record / IEEE Global Telecommunications Conference

PB - IEEE

ER -