A wireless network consisting of multiple sources communicating with the corresponding destination utilizing a single half-duplex relay is considered in this paper, while the sources are allowed to use the relay opportunistically. By integrating information theory with the concept of effective capacity, we propose a dynamic bandwidth allocation strategy over the wireless relay network based on the frequency division multiple access (FDMA). The dynamic bandwidth allocation strategy aims at maximizing the relay network throughput subject to a given delay quality of service (QoS) constraint. The simulation results show that our proposed allocation strategy can significantly improve the effective capacity as compared to the traditional equal bandwidth allocation strategy.

Generally, order punctuality has received plenty of attention by manufacturers in order fulfillment. In order fabrication, jobs from a customer are often separately processed in dispersed manufacturing resources, such as different machines, facilities, or factories. This leads to the difficulties of processing customer orders in a simultaneous manner. This paper proposes a concept of manufacturing synchronization (MfgSync) and measures it from the perspective of simultaneity and punctuality. We study MfgSync of scheduling dynamic arrival orders in a hybrid flowshop. To deal with the dynamic order arrival environment, we schedule the coming orders in a periodic manner so that the dynamic scheduling problem is decomposed into a series of continuous static sub-problems. A base model for each sub-problem is mathematically formulated to minimize the simultaneity of order fabrication measured by mean longest waiting duration considering the order punctuality constraint. We then present a solution algorithm consisting of a periodic scheduling policy and a modified genetic algorithm. Numerical studies demonstrate the effectiveness of the proposed approach. The B Meilin Wang

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