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Scale-Free Compact Routing Schemes in Networks of Low Doubling Dimension

Published: 15 June 2016 Publication History

Abstract

We consider compact routing schemes in networks of low doubling dimension, where the doubling dimension is the least value α such that any ball in the network can be covered by at most 2α balls of half radius. There are two variants of routing-scheme design: (i) labeled (name-dependent) routing, in which the designer is allowed to rename the nodes so that the names (labels) can contain additional routing information, for example, topological information; and (ii) name-independent routing, which works on top of the arbitrary original node names in the network, that is, the node names are independent of the routing scheme.
In this article, given any constant ϵ ∈ (0, 1) and an n-node edge-weighted network of doubling dimension α ∈ O(loglog n), we present
—a (1 + ϵ)-stretch labeled compact routing scheme with ⌈log n⌉-bit routing labels, O(log2 n/loglog n)-bit packet headers, and ((1/ϵ)O(α) log3 n)-bit routing information at each node;
—a (9 + ϵ)-stretch name-independent compact routing scheme with O(log2 n/loglog n)-bit packet headers, and ((1/ϵ)O(α) log3 n)-bit routing information at each node.
In addition, we prove a lower bound: any name-independent routing scheme with o(n(ϵ/60)2) bits of storage at each node has stretch no less than 9 − ϵ for any ϵ ∈ (0, 8). Therefore, our name-independent routing scheme achieves asymptotically optimal stretch with polylogarithmic storage at each node and packet headers.
Note that both schemes are scale-free in the sense that their space requirements do not depend on the normalized diameter Δ of the network. We also present a simpler nonscale-free (9 + ϵ)-stretch name-independent compact routing scheme with improved space requirements if Δ is polynomial in n.

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  • (2019)Routing in polygonal domainsComputational Geometry10.1016/j.comgeo.2019.101593(101593)Online publication date: Nov-2019

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Published In

cover image ACM Transactions on Algorithms
ACM Transactions on Algorithms  Volume 12, Issue 3
June 2016
408 pages
ISSN:1549-6325
EISSN:1549-6333
DOI:10.1145/2930058
Issue’s Table of Contents
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Association for Computing Machinery

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Publication History

Published: 15 June 2016
Accepted: 01 January 2016
Revised: 01 October 2008
Received: 01 April 2007
Published in TALG Volume 12, Issue 3

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Author Tags

  1. Scale free
  2. compact routing
  3. doubling dimension
  4. labeled routing
  5. name-independent routing

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View all
  • (2021)Routing Among Convex Polygonal Obstacles in the PlaneCombinatorial Optimization and Applications10.1007/978-3-030-92681-6_1(1-11)Online publication date: 17-Dec-2021
  • (2019)Routing in polygonal domainsComputational Geometry10.1016/j.comgeo.2019.101593(101593)Online publication date: Nov-2019

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