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Vehicular social networks, as one type of new future networks, integrate mobile wireless communications and social networks together, and they have attracted a plenty of interest from researchers. This paper argues that vehicular social networks joined with cloud and fog computing platforms can serve as recommenders and play a significant role in social lives. A new application for recommender systems...
The popularity of smartphones and mobile applications has boosted over the top (OTT) services during the recent years, and this trend is expected to continue in the future. However, frequent connection reestablishments caused by OTT services which send or receive small amounts of data often lead to a heavy signalling load within the mobile networks. That has brought about signalling storm, which is...
The radio link between a pair of wireless nodes is determined by radio channels, transmission range, node mobility and node-pair distance, which form a set of random factors in multihop wireless networks. The properties of such radio links can be characterized by link lifetime, residual link lifetime and link change rate, which, in fact, have been widely used for network design and performance evaluation...
Green liquor (sodium carbonate and sodium sulifide, GL) pretreated wheat straw was used as carbon source for cellulase production by Trichoderma reesei. The effects of GL pretreatment at different Total Titrateable Alkali(TTA) charge, cooking temperature and sulfidity on pulp yield, cellulase synthesis and yield of enzymatic hydrolysis were investigated. Results indicated that TTA charge was the most...
In mobile environment, when downloading and opening learning resources it would need the large data communications bandwidth and strong data processing ability. Due to the intrinsic limitations of a mobile environment, there can be long time latency for a data access. Data prefetching is an approach to this problem. in this paper, a improved data prefetching strategy was proposed. based on existed...
The mobility patterns of nodes is essential for the design of data dissemination in Delay-Tolerant network (DTN). This paper proposes a data dissemination policy by using human mobility model in DTN in which wireless devices are carried by humans, referred as HMP. HMP selects relay nodes rigidly and improves the efficiency of data forwarding by using the factor set, which is composed of Destination-Matching...
In this paper, channel allocation scheme is studied for overlay wireless networks to optimize connection-level QoS. The contributions of our work are threefold. First, channel allocation scheme using both horizontal channel borrowing and vertical channel borrowing is presented and analyzed. When all the channels in a given cell are used, handoff requests can borrow channels from adjacent homogeneous...
In this paper, we study link properties over dynamic radio channels based on analytical models and simulations. Specifically, channel variability and mobility are investigated through two quantities: effective transmission range and node-pair distance, respectively. We find that the PDF of link lifetime can be approximated by exponential distribution with parameter characterized by the ratio of average...
Understanding the impacts of node mobility on topology dynamics is essential to design a mobility resilient ad hoc network. Current research showed that mobility models can heavily affect the study of network topology due to different mobility patterns (Santi, 2005). In this paper, topology dynamics based on the smooth model (Zhao and Wang, 2006) was analyzed, because it generates smooth, microscopic...
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