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A new heuristic algorithm is proposed for constructing multicast tree for multimedia and interactive applications that require certain quality of services, QoS. The authors consider two main QoS parameters that are the delay and delay variation. The problem is formulated as constructing shortest path tree under delay and delay variation constraints. The tree is used to concurrently transmit packets from source to multiple destinations such that exactly one copy of any packet traverses the links of the multicast tree. This problem is known to be NP-Complete.
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