## Abstract

A fundamental problem in QoS routing is to find a path between a specified source-destination node pair that satisfies a set of end-to-end quality-of-service constraints. We study this problem in a communication system where there are multiple additive quality of service parameters associated with each link. It is well-known that the multi-constrained path selection problem (MCPS) is NP-complete. In this paper, we present a fully polynomial time approximation scheme for an optimization version of the MCPS problem. This means that for any given ε > 0, we can compute, in time bounded by a polynomial of the input size of the problem and in 1/ε, a solution whose cost is at most (1 + ε) of that of the optimal solution.

Original language | English (US) |
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Title of host publication | IEEE International Conference on Communications |

Pages | 223-227 |

Number of pages | 5 |

Volume | 1 |

State | Published - 2003 |

Event | 2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States Duration: May 11 2003 → May 15 2003 |

### Other

Other | 2003 International Conference on Communications (ICC 2003) |
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Country/Territory | United States |

City | Anchorage, AK |

Period | 5/11/03 → 5/15/03 |

## Keywords

- Efficient approximation algorithms
- Multiple additive constraints
- Quality of service routing

## ASJC Scopus subject areas

- Media Technology