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Multicast is an important way to diffuse data in duty-cycled wireless sensor networks (WSNs), where nodes can receive data only in active state. The communication delay can be extremely large if inappropriate schedules are adopted. Unfortunately, most previous methods do not consider controlling multicast delay energy-efficiently. This paper studies the minimum active time slot augmentation for delay-bounded...
Beaconing is a fundamental networking service where each node broadcasts a packet to all its neighbors locally. Unfortunately, the problem Minimum Latency Beaconing Schedule (MLBS) in duty-cycled scenarios is not well studied. Existing works always have rigid assumption that each node is only active once per working cycle. Aiming at making the work more practical and general, MLBS problem in duty-cycled...
Data aggregation is an essential operation for the sink to obtain summary information in a Wireless Sensor Network (WSN). The problem of Minimum Latency Aggregation Schedule (MLAS) which seeks a fastest and collision-free aggregation schedule has been well studied when nodes are always awake. However, in duty-cycle WSNs, nodes can only receive data in active state. In such networks, it is of great...
Multicasting is a fundamental network service for the one-to-many communications in wireless sensor networks. However, when the sensor nodes work in a duty-cycled way, a sender may need to transmit the same message several times to get to one group of its neighboring nodes, which complicates the minimum energy multicasting problem. In this paper, we study the problem of minimum energy multicasting...
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