On the design of efficient ATM routing schemes

  • Authors:
  • Luca Becchetti;Paola Bertolazzi;Carlo Gaibisso;Giorgio Gambosi

  • Affiliations:
  • Istituto di Analisi dei Sistemi ed Informatica del CNR, Rome, Italy;Istituto di Analisi dei Sistemi ed Informatica del CNR, Rome, Italy;Istituto di Analisi dei Sistemi ed Informatica del CNR, Rome, Italy;Univ. of Rome, Rome, Italy

  • Venue:
  • Theoretical Computer Science
  • Year:
  • 2002

Quantified Score

Hi-index 5.23

Visualization

Abstract

In this paper we deal with the problem of designing virtual path layouts in ATM networks when the hop-count is given and the load has to be minimized. We first prove a lower bound for networks with arbitrary topology and arbitrary set of connection requests. This result is then applied to derive lower bounds for the following settings: (i) one-to-all (one node has to be connected to all other nodes of the network) in arbitrary networks; (ii) all-to-all (each node has to be connected to all other nodes in the network) in several classes of networks, including planar and k-separable networks and networks of bounded genus. We finally study the all-to-all setting on two-dimensional meshes and we design a virtual path layout for this problem. When the hop-count and the network degree are bounded by constants, our results show that the upper bounds proposed in this paper for the one-to-all problem in arbitrary networks and for the all-to-all problem in two-dimensional mesh networks are asymptotically optimal. Moreover, the general lower bound shows that the algorithm proposed in Gerstel (Ph.D. Thesis, Technion-Haifa, Israel, 1995) for the all-to-all problem in k-separable networks is also asymptotically optimal. The upper bound for mesh networks also shows that the lower bound presented in this paper for the all-to-all problem in planar networks is asymptotically tight.