TY - GEN

T1 - Distributed construction of connected dominating sets with minimum routing cost in wireless networks

AU - Ding, Ling

AU - Gao, Xiaofeng

AU - Wu, Weili

AU - Lee, Wonjun

AU - Zhu, Xu

AU - Du, Ding Zhu

PY - 2010

Y1 - 2010

N2 - In this paper, we will study a special Connected Dominating Set (CDS) problem - between any two nodes in a network, there exists at least one shortest path, all of whose intermediate nodes should be included in a special CDS, named Minimum rOuting Cost CDS (MOC-CDS). Therefore, routing by MOC-CDS can guarantee that each routing path between any pair of nodes is also the shortest path in the network. Thus, energy consumption and delivery delay can be reduced greatly. CDS has been studied extensively in Unit Disk Graph (UDG) or Disk Graph (DG). However, nodes in networks may have different transmission ranges and some communications may be obstructed by obstacles. Therefore, we model network as a bidirectional general graph in this paper. We prove that constructing a minimum MOC-CDS in general graph is NP-hard. We also prove that there does not exist a polynomial-time approximation algorithm for constructing a minimum MOC-CDS with performance ratio ρlnδ, where ρ is an arbitrary positive number (ρ < 1) and δ is the maximum node degree in network. We propose a distributed heuristic algorithm (called as FlagContest) for constructing MOC-CDS with performance ratio (1 - ln2) + 2lnδ. Through extensive simulations, we show that the results of FlagContest is within the upper bound proved in this paper. Simulations also demonstrate that the average length of routing paths through MOC-CDS reduces greatly compared to regular CDSs.

AB - In this paper, we will study a special Connected Dominating Set (CDS) problem - between any two nodes in a network, there exists at least one shortest path, all of whose intermediate nodes should be included in a special CDS, named Minimum rOuting Cost CDS (MOC-CDS). Therefore, routing by MOC-CDS can guarantee that each routing path between any pair of nodes is also the shortest path in the network. Thus, energy consumption and delivery delay can be reduced greatly. CDS has been studied extensively in Unit Disk Graph (UDG) or Disk Graph (DG). However, nodes in networks may have different transmission ranges and some communications may be obstructed by obstacles. Therefore, we model network as a bidirectional general graph in this paper. We prove that constructing a minimum MOC-CDS in general graph is NP-hard. We also prove that there does not exist a polynomial-time approximation algorithm for constructing a minimum MOC-CDS with performance ratio ρlnδ, where ρ is an arbitrary positive number (ρ < 1) and δ is the maximum node degree in network. We propose a distributed heuristic algorithm (called as FlagContest) for constructing MOC-CDS with performance ratio (1 - ln2) + 2lnδ. Through extensive simulations, we show that the results of FlagContest is within the upper bound proved in this paper. Simulations also demonstrate that the average length of routing paths through MOC-CDS reduces greatly compared to regular CDSs.

KW - Connected dominating set

KW - General graph

KW - NP-hard

KW - Obstacle

KW - Shortest path

KW - Virtual backbones

KW - Wireless network

UR - http://www.scopus.com/inward/record.url?scp=77955898231&partnerID=8YFLogxK

U2 - 10.1109/ICDCS.2010.17

DO - 10.1109/ICDCS.2010.17

M3 - Conference contribution

AN - SCOPUS:77955898231

SN - 9780769540597

T3 - Proceedings - International Conference on Distributed Computing Systems

SP - 448

EP - 457

BT - ICDCS 2010 - 2010 International Conference on Distributed Computing Systems

T2 - 30th IEEE International Conference on Distributed Computing Systems, ICDCS 2010

Y2 - 21 June 2010 through 25 June 2010

ER -