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cross layer scheduling for real-time traffic in multiuser MIMO-OFDMA systems

The Journal of China Universities of Posts and Telecommunications 2009年第3期16卷 24-29页

作者： SUN Qiao-yun,TIAN Hui,DONG Kun,ZHANG Ping Key Laboratory of Universal Wireless Communications,Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

A novel cross layer scheduling algorithm is proposed for real-time （RT） traffic in multiuser downlink multiple-input multiple-output orthogonal frequency division multiple access （MIMO-OFDMA） wireless systems. The algorithm dynamically allocates resources in space, time and frequency domain based on channel state information （CSI）, users＇ quality of service （QoS） requirements and queue state information （QSI）. To provide higher data rate and spectrum efficiency, adaptive modulation and coding （AMC） is employed. The proposed algorithm can improve cell throughput and increase the number of users that can be supported while guaranteeing users＇ QoS requirements and fairness among all users. Simulation results indicate that the proposed algorithm can achieve superior performance.

关键词： MIMO-OFDMA cross layer QoS AMC

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Research on Network Architecture with Trustworthiness and Controllability

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Journal of Computer Science & Technology 2006年第5期21卷 732-739页

作者：林闯彭雪海 Department of Computer Science and Technology Tsinghua University Bcijing 100084 P.R. China

In this paper, the architecture of trustworthy and controllable networks is discussed to meet arising application requirements. After reviewing the lessons and experiences of success and failure in the Internet and summarizing related work, we analyze the basic targets of providing trustworthiness and controllability. Then, the anticipant architecture is introduced. Based on the resulting design, several trustworthy and controllable mechanisms are also discussed.

关键词： network architecture trustworthiness security controllability cross layer

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An Innovative Design Approach to Control over Ad Hoc Networks

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Circuits and Systems 2016年第6期7卷 971-982页

作者： S. Subburam T. Senthilkumaran S. Revathi M. Mathivanan Prince Shri Venkateshwara Padmavathy Engineering College Chennai India ACS College of Engineering Bengaluru India B. S Abdur Rahman University Chennai India

In Mobile ad hoc networks (MANETs), the mobile nodes are communicating trough wireless medium. The protocol designs of MANETs are based on a traditional approach which has been found ineffective to deal congestion related problems. Hence, it is affecting properties of physical layer, the network layer and transport layer. This paper proposes a novel design approach, deviating from the traditional network design, towards enhancing the cross-layer interaction among different layers, namely physical, MAC and network. The novel approach for congestion control is to solve congestion and mobility related problems with a cross layer interaction. The significance of CLCC is that it has used two mechanisms: (i) Dynamic Transmission Power Control algorithm that predicts a link breakage if it is likely to happen, (ii) Dynamic Congestion Estimation Technique, which analyzes traffic fluctuation and categorize congestion status perfectly. The proposed protocol reduces the route breakage and network congestion, hence reduces the control overhead and latency, and increases the packet delivery ratio. Through simulation, it is shown that the proposed protocol is simple, robust and effective.

关键词： Congestion MAC Link Breaks cross layer

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