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With the proliferation of mobile devices, spatial crowdsourcing is rising as a new paradigm that enables individuals to participate in tasks related to some locations in the physical world. Nevertheless, how to allocate these tasks to proper mobile users and improve communication efficiency are critical in spatial crowdsourcing. In this paper, we propose Fo-DSC, a fog-based deduplicated spatial crowdsourcing...
Orthogonal frequency division multiple access (OFDMA), which is known as one of the most promising physical techniques for advanced wireless communications system, generally has a guard interval (GI) to mitigate the inter-symbol interference (ISI) and inter-carrier interference (ICI) caused by delay paths. However, the intra-cell interference (ISI and ICI) may be severe, when GI becomes insufficient...
Ubiquitous computing involves large number of devices which are connected via networks. This requires packet processing service to guarantee privacy, security, and high quality. We study to provide ubiquitous computing with stable and satisfied services through improving packet processing performance. Since the applications become more and more complicated, the task allocation among multi-cores for...
Ubiquitous computing disappears from people's consciousness. To achieve the transparence, tremendous computing power is in need not only in WLAN where users access directly but also in the Internet where information is retrieved and sent. Bandwidth is crucial to improve userpsilas transparent experience when providing services such as video on demand. Network processors (NPs) are specialized design...
Software evolution has become one of the important characteristics in software life cycle. Based on the SDDM2 (second generation system dynamic development model), a modeling method which is configurable and reusable for supporting the software evolution modeling, we propose the method of performance analysis and the optimization of the resource of software evolution processes, so as to effectively...
In this paper, a novel hierarchical algorithm is proposed for orthogonal frequency-division multiple-access wireless mesh networks (WMNs). The problem is to maximize the overall end-to-end rate with balancing the fairness among users, and find a new method as a substitute for Lee's resource allocation algorithm with high computational complexity. The proposed algorithm consists of two subproblems,...
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