Geometric spanners can be used for efficient routing in wireless ad hoc networks. Computation of existing spanners for ad hoc networks primarily focused on geometric properties without considering network requirements. In this paper, we propose a new spanner called constrained Delaunay triangulation (CDT) which considers both geometric properties and network requirements. The CDT is formed by introducing a small set of constraint edges into local Delaunay triangulation (LDel) to reduce the number of hops between nodes in the network graph. We have simulated the CDT using network simulator (ns-2.28) and compared with Gabriel graph (GG), relative neighborhood graph (RNG), local Delaunay triangulation (LDel), and planarized local Delaunay triangulation (PLDel). The simulation results show that the minimum number of hops from source to destination is less than other spanners. We also observed the decrease in delay, jitter, and improvement in throughput.

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throughput geometric properties efficient routing in wireless ad hoc networks network simulator ns228 constraint edges spanner delay jitter spanners gabriel graph gg relative neighborhood graph rng local delaunay triangulation

D. Satyanarayana,S. V. Rao,.Constrained Delaunay Triangulation for Ad Hoc Networks. 2008 (),.

D. Satyanarayana,S. V. Rao,"Constrained Delaunay Triangulation for Ad Hoc Networks" 2008

D. Satyanarayana,S. V. Rao,"Constrained Delaunay Triangulation for Ad Hoc Networks"