Efficient Approximation Algorithm for Data Retrieval with Conflicts in Wireless Networks
Proceedings of International Conference on Advances in Mobile Computing & Multimedia
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Wireless data broadcast is usually used to disseminate the public information to considerable clients in wireless environment. Based on the development of mobile device, some mobile devices can simultaneously use multiple antennae to process some operations. In this paper, we commit to study data retriveal schdeuling problem in wireless data broadcast, which mobile device has multiple antennae and the data items are non-consecutivly broadcasted in mutiple parallel channels. In order to improve the performance of downloading requested data items, we propose a scheme of scheduling parallel data retrievals for non-consecutive broadcast to decrease access latency and energy consumption. In this scheme, we utilize a weight of channel through two balancing factors to choose the suitable channel for data retrieval. We analyze the performance of propsed scheme and the other schemes. Evaluation results prove that the proposed scheme has the better performance.