摘要： In this presentation, the speaker will introduce three recent research results in wireless networks. One is in bandwidth adaptation of wireless networks by using network reversible process property. This research verifies the product-form solution of whole wireless network and further reveals the importance of single-node research in wireless networks. Another research is in call admission control based billing strategies by using the method of Markov decision process. This research verifies the optimal admission threshold policy for new generated data and then provides a novel method in resolving dynamic optimal problems in wireless networks. The third research is on security aspects of wireless sensor networks (WSNs). The speaker will present his recent research works in the protection for securing WSNs against virus attacks through the model development. The research discovers the WSN availability when no anti-virus mechanism is proposed, and then proposes the WSN model with anti-virus mechanism, together with new development of time-based network protection scheme and power-based network protection scheme, respectively. This research derives the explicit solutions of WSN availability for these two adaptive network protection schemes for securing WSNs against virus attacks. As a potential collaboration with scholars who are interested in these areas, the speaker will discuss a few challenging problems in the areas which may need to be paid attention in the near future. Finally, the speaker will present on how the current research be linked to the short range wireless communications for connected vehicle to vehicle (V2V) networks.
報(bào)告人簡(jiǎn)介：李偉，博士，我校校友，美國(guó)休斯頓德克薩斯州南部大學(xué)（TSU）計(jì)算機(jī)科學(xué)系教授，NSF復(fù)雜網(wǎng)絡(luò)研究中心的主任，該中心是NSF 2017-2018年27個(gè)科學(xué)技術(shù)卓越研究中心之一。研究方向?yàn)椋簾o(wú)線(xiàn)傳感器網(wǎng)絡(luò)和移動(dòng)自組織網(wǎng)絡(luò)；無(wú)線(xiàn)網(wǎng)絡(luò)和移動(dòng)網(wǎng)絡(luò)動(dòng)態(tài)模型的適配、設(shè)計(jì)和實(shí)現(xiàn)；無(wú)線(xiàn)多媒體網(wǎng)絡(luò)中的無(wú)線(xiàn)電資源分配；移動(dòng)與高性能計(jì)算等。李教授出版專(zhuān)著5部，在Advances in Applied Probability、Journal of Applied Probability等期刊和國(guó)際會(huì)議上發(fā)表專(zhuān)業(yè)論文200余篇，科研經(jīng)費(fèi)達(dá)600萬(wàn)美金。
