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An iterative algorithm for delay-constrained minimum-cost multicasting

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3 Author(s)
Parsa, M. ; Dept. of Comput. Eng., California Univ., Santa Cruz, CA, USA ; Qing Zhu ; Garcia-Luna-Aceves, J.J.

The bounded shortest multicast algorithm (BSMA) is presented for constructing minimum-cost multicast trees with delay constraints. The BSMA can handle asymmetric link characteristics and variable delay bounds on destinations, specified as real values, and minimizes the total cost of a multicast routing tree. Instead of the single-pass tree construction approach used in most previous heuristics, the new algorithm is based on a feasible-search optimization strategy that starts with the minimum-delay multicast tree and monotonically decreases the cost by iterative improvement of the delay-bounded multicast tree. The BSMA's expected time complexity is analyzed, and simulation results are provided showing that BSMA can achieve near-optimal cost reduction with fast execution

Published in:

Networking, IEEE/ACM Transactions on  (Volume:6 ,  Issue: 4 )