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admission control algorithm under delay quality of service constraint in multiple packet reception-capable visible light communication system

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OPTICAL ENGINEERING 2024年第12期63卷

作者： Sun, Hongliang Li, Dan Chen, Shuo Qian, Lei Jilin Inst Chem Technol Coll Informat & Control Engn Jilin Peoples R China Tiangong Univ Sch Elect & Informat Engn Tianjin Peoples R China

Visible light communication (VLC) is considered an effective complementary solution for indoor wireless communication to achieve high-speed and secure data transmission. In the random access process of VLC, the collision problem caused by hidden terminals is prominent. The multiple packet reception (MPR) technique can effectively mitigate the multi-terminal collision in VLC and improve the performance and reliability of the system. We proposed, considering the MPR-capable uplink VLC system, a quality of service (QoS)-constrained admission control scheme based on the improved coati optimization algorithm (COA) to guarantee delay requirement. First, we adopt the ALOHA mechanism as the basis of the service, and the arrival stream consists of a primary arrival stream and a background arrival stream. Then, we evaluate the delay performance using the large deviation theory, and the optimization problem with the objective of maximizing the arrival rate is constructed. Finally, we incorporate a cat chaotic map, Levy flight strategy, and t-distribution mutation strategy to improve COA, which makes solving the optimization problem more efficient. Simulation results show that the proposed algorithm is dependable and can improve the system resource utilization.

关键词： visible light communication quality of service admission control algorithm improved coati optimization algorithm multiple packet reception

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admission control algorithm based on the effective bandwidth in vehicle-to-infrastructure communication

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IET COMMUNICATIONS 2018年第6期12卷 704-711页

作者： Paul, Mousumi Sanyal, Goutam Samanta, Debabrata Gia Nhu Nguyen Dac-Nhuong Le Natl Inst Technol ICSE Dept Rourkela India Dayananda Sagar Coll Arts Sci & Commerce Comp Applicat Dept Bangalore 560078 Karnataka India Duy Tan Univ Grad Sch Danang Vietnam Haiphong Univ Fac Informat Technol Haiphong Vietnam

With pervasive of mobile computing and wireless communication, the vehicular ad-hoc network has become a key technology in modern day's information exchange. Due to the fast growing number of vehicles and saturation of the transport infrastructure, it is inhabitable to come out with better solution considering the available resources. In this study, thorough traffic analysis has been carried out to suggest a better model. Further, an attempt has been made to propose an admission control algorithm based-on the parameters evolve from the mathematical analysis. Moreover, the performance analysis has been shown to establish the efficacy of the algorithm.

关键词： vehicular ad hoc networks telecommunication congestion control mathematical analysis admission control algorithm vehicle-toinfrastructure communication mobile computing wireless communication vehicular ad-hoc network information exchange transport infrastructure traffic analysis mathematical analysis

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Improved Resource Allocation Model for Reducing Interference Among Secondary Users in TV White Space for Broadband Services

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IEEE ACCESS 2022年 10卷 118981-118991页

作者： Mwaimu, Marco P. Majham, Mike Ronoh, Kennedy K. Michael, Kisangiri Sinde, Ramadhani Saidi Nelson Mandela African Inst Sci & Technol Sch Computat & Commun Sci & Engn Arusha 23100 Tanzania Strathmore Univ Sch Comp & Engn Sci Nairobi 00200 Kenya

In recent years, the Television White Space has attracted the interest of many researchers due to its propagation characteristics obtainable between 470MHz and 790MHz spectrum bands. However, aggregate interference increase when secondary users in wireless network increase. Aggregate interference on the side of Primary Users has been extensively scrutinized. Therefore, resource allocation (power and spectrum) is crucial when designing the Television White Space network to avoid interferences from Secondary Users to Primary Users and among Secondary Users themselves. This study proposes a resource allocation model that uses joint power and spectrum hybrid Particle Swarm Optimization, Firefly, and Genetic algorithm for reducing the aggregate interference among Secondary Users. The algorithm is integrated with the admission control algorithm so that;there is a possibility of removing some of the Secondary Users in the network whenever the Signal to Noise Ratio threshold for Secondary and Primary Users is not met. We considered an infeasible system whereby all Secondary and Primary Users may not be supported simultaneously. Metrics such as Primary User Signal-to-noise ratio, sum throughput, and secondary user signal-to-noise ratio less than the threshold used to compare the performance of the proposed algorithm and the results show that PSOFAGA with effective link gain ratio admission control has the best performance compared to particle swarm optimization, genetic algorithm, firefly algorithm, and PSOFAGA algorithm.

关键词： admission control algorithm cognitive radio networks effective link gain ratio algorithm resource allocation TV whitespace

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Downlink Scheduling algorithm for WiMAX Protocol to Improve QoS

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ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2018年第8期43卷 4105-4114页

作者： Sreenivasulu, Ummiti Naganjaneyulu, P. V. Giriprasad, M. N. Geethanjali Inst Sci & Technol Dept ECE Nellore AP India MVR Coll Engn & Technol Vijayawada AP India JNTUCE Dept ECE Anantapur AP India

The growing demand for multimedia communication has resulted in tougher requirements of quality of service (QoS). Today, QoS necessitates the deployment of powerful and efficient networks. Worldwide Interoperability for Microwave Access (WiMAX) is regarded as a promising technology in the field of wireless communication. In fact, WiMAX network is considered the best network to support real-time as well as non-real-time applications in varied conditions of a simulated environment. Wireless communication requires uplink and downlink scheduling for communication among base station subscribers. Scheduling is still a challenging task for researchers. In this work, we propose an evolutionary computational scheme for downlink scheduling that brings in substantial improvisations in the QOS of a network system. The proposed approach simplifies the scheduling scheme for varied service schemes such as UGS, rtPS, nrtPS. We extend some improved computational strategies to our proposed approach in order to control data communication as well as route formation in signal information. We also use a computational approach, i.e., passage relocation admission control to perform automatic selection of base station with similar data operations. We further seek to analyze the role of data communication and packet dropping in wireless network communication. Our experimental study shows an improved performance of the proposed model in terms of slot/success ratio, throughput and energy consumption. As it happens, we succeed in recording 7% improvement in throughput performance, 10.34% improvement in slot/success ratio performance, and quite significantly, a 28% reduction in energy consumption based on the simulation time.

关键词： Wireless networks Worldwide Interoperability for Microwave Access Quality of service admission control algorithm Scheduling algorithm

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Robust power control for femtocell networks with imperfect channel state information

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IET COMMUNICATIONS 2016年第8期10卷 882-890页

作者： Liu, Zhixin Zhang, Peng Guan, Xinping Li, Xinbin Yang, Hongjiu Yanshan Univ Inst Elect Engn Qinhuangdao 066004 Peoples R China Shanghai Jiao Tong Univ Sch Elect Informat & Elect Engn Shanghai 200240 Peoples R China

In this study, the authors study the power control for a two-tier network system which is comprised of a central macrocell and several femtocells. In practice, the communication environment is fairly complex and dynamic which leads to the imperfect channel state information (CSI). To enhance the robustness of the two-tier network system, the imperfect CSI in both signal links and interference links are considered and the uncertainties of the CSI are uniformly distributed in an ellipsoid uncertainty set. Then, a probability-constrained optimisation problem is formulated to deal with the uncertainties and protect the quality-of-service of all users. A novel method is provided to convert probability constraints into deterministic ones. Based on them, they propose an iterative algorithm and an admission control algorithm to enhance the network efficiency. They also investigate the case when the distributions of the uncertainties of the CSI are unknown. Finally, numerical results are given to illustrate the effectiveness of the authors' power control scheme.

关键词： robust control power control femtocellular radio radiofrequency interference optimisation probability iterative methods telecommunication congestion control quality of service robust power control imperfect channel state information femtocell networks two-tier network system central macrocell network CSI signal links interference links ellipsoid uncertainty set probability-constrained optimisation problem quality-of-service iterative algorithm admission control algorithm network efficiency communication environment

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Cross-layer QoSArchitecture for Mobility Management over Heterogeneous Wireless Networks

Cross-layer QoSArchitecture for Mobility Management over Het...

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International Conference on Materials Science and Information Technology (MSIT 2011)

作者： Wang, Ping Chen, Lu-wei Song, Mei Zang, Ying-hai Beijing Univ Posts & Telecommun Beijing 100088 Peoples R China

ISBN: (纸本)9783037853191

The development of wireless networks brings people great convenience. More state-of-the-art communication protocols of wireless networks are getting mature. People attach more importance to the QoS provisioning in heterogeneous wireless networks. This study proposes a cross-layer-based mobility management Quality-of-Service (QoS) architecture that includes the QoS manager, the cross-layer scheme and the access control algorithm. In order to provide the QoS support for mobile user, the overall architecture for QoS management is required in heterogeneous wireless environment, where various mobile users are connected to the different access network through the core network. The QoS manager is composed of ANQM (Access Network QoS Manger) and IANQM (Inter-Access Network QoS Manger) which are used to provide consistent QoS management over an integrated wireless access network environment. The access control algorithm is based on the QoS mapping mechanism between the access network and the core network. The simulation result shows that the QoS for mobile user is guaranteed more effectively and this mechanism provides an end-to-end QoS between different access networks.

关键词： QoS architecture End-to-End QoS heterogeneous wireless networks QoS mapping mechanism cross-layer admission control algorithm mobility management

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Heavy-tail and voice over internet protocol traffic: queueing analysis for performance evaluation

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IET COMMUNICATIONS 2011年第18期5卷 2736-2743页

作者： Mahani, A. Kavian, Y. S. Naderi, M. Rashvand, H. F. Shahid Bahonar Univ Fac Engn & Technol Dept Elect Engn Kerman Iran Shahid Chamran Univ Fac Engn Ahvaz Iran Iran Univ Sci & Technol Sch Elect & Elect Engn Tehran Iran Univ Warwick Sch Engn Warwick England

Study the effects of concurrent voice connections on the performance metrics of communication network such as queue length, waiting time, packets service time and ... is very important. Mathematical analysis of such network especially with long-tail traffic will help us for a good capacity planning and also lead to an accurate admission control algorithms. In this study a mathematical model of a communication network supporting VoIP and back-ground traffic with long-tail service time is considered. Some problems of previous mathematical models are identified and a new queueing system is proposed in which specifically the coexisting of heavy-tail and voice flows is addressed. The long-tail service time is approximated via hyper-Erlang distribution and also to achieving an accurate performance model a Markov reward model is introduced. The available bandwidth for long-tail distribution varies according to the Markov chain, describing the utilisation factor of voice connection. Numerical results show a comparison between exponential and heavy-tail service time and finally the effects of concurrent voice connections on the service time of heavy-tailed back-ground packets is shown.

关键词： packet service time queueing theory heavy-tail traffic Markov reward model VoIP Markov chain waiting time admission control algorithm long-tail service time queue length Computer communications mathematical analysis back-ground traffic Telephony long-tail traffic capacity planning Mathematical analysis Other computer networks queueing analysis heavy-tailed back-ground packet concurrent voice connection voice over Internet protocol hyper-Erlang distribution Internet telephony voice flow telecommunication traffic Queueing systems mathematical model Markov processes communication network

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Saturation Performance Assessment of Differentiation Services Supported in IEEE 802.11e

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JOURNAL OF INTERNET TECHNOLOGY 2011年第6期12卷 855-864页

作者： Hwang, Bor-Jiunn Hwang, I-Shyan Chang, Fsin-Hao Yuan Ze Univ Dept Informat Commun Tao Yuan Taiwan Ming Chuan Univ Dept Comp & Commun Engn Taipei Taiwan Yuan Ze Univ Dept Comp Sci & Engn Tao Yuan Taiwan

In the emerging standard IEEE 802.11e, the Enhanced Distributed Channel Access (EDCA) is specified to support quality-of-service (QoS) in wireless local area networks (WLAN). This paper aims at providing a thoroughly analytical model that captures the operation of the AIFSs, contention window sizes and retry limits differentiation for different services of the EDCA mechanism under saturation condition based on a three-dimensional Markov Chain model. The analytical model is validated and provides an in-depth understanding and insights into the EDCA protocol, and effectiveness of different parameters on the system performance in terms of system throughput and frame dropping probability for differentiation services traffic is investigated through extensive numerical and simulation results. Moreover, the analytical model can be cooperated into the admission control algorithm with different parameters in terms of AIFS, contention window sizes and retry limits.

关键词： IEEE 802.11e WLAN Enhanced distributed channel access (EDCA) Three-Dimensional Markova chain Saturation condition admission control algorithm

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A mobility-based load control scheme in Hierarchical Mobile IPv6 networks

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WIRELESS NETWORKS 2010年第2期16卷 545-558页

作者： Pack, Sangheon Kwon, Taekyoung Choi, Yanghee Korea Univ Sch Elect Engn Seoul South Korea Seoul Natl Univ Sch Engn & Comp Sci Seoul South Korea

By introducing a mobility anchor point (MAP), Hierarchical Mobile IPv6 (HMIPv6) reduces the signaling overhead and handoff latency associated with Mobile IPv6. In this paper, we propose a mobility-based load control (MLC) scheme, which mitigates the burden of the MAP in fully distributed and adaptive manners. The MLC scheme combines two algorithms: a threshold-based admission control algorithm and a session-to-mobility ratio (SMR)-based replacement algorithm. The threshold-based admission control algorithm gives higher priority to ongoing mobile nodes (MNs) than new MNs, by blocking new MNs when the number of MNs being serviced by the MAP is greater than a predetermined threshold. On the other hand, the SMR-based replacement algorithm achieves efficient MAP load distribution by considering MNs' traffic and mobility patterns. We analyze the MLC scheme using the continuous time Markov chain in terms of the new MN blocking probability, ongoing MN dropping probability, and binding update cost. Also, the MAP processing latency is evaluated based on the M/G/1 queueing model. Analytical and simulation results demonstrate that the MLC scheme outperforms other schemes and thus it is a viable solution for scalable HMIPv6 networks.

关键词： Hierarchical Mobile IPv6 Mobility-based load control Mobility anchor point admission control algorithm Session-to-mobility ratio

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Uplink performances in TDD-CDMA distributed wireless communication system

Uplink performances in TDD-CDMA distributed wireless communi...

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2010 International Conference on Information, Networking and Automation, ICINA 2010

作者： Yang, Bo Tang, Youxi National Key Lab. of Communications University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9781424481057

In this paper, we focus on the uplink performances in TDD-CDMA distributed wireless communication system (DWCS). First, the uplink capacity and load factor are analyzed in theory. Then a model is established to estimate interference increase due to a new or handoff user. Next an admission control algorithm is proposed based on the model. The simulation results show that MUD and array element number have a great impact on the performance of the proposed algorithm and the proposed admission control algorithm can promote the system performance effectively if proper noise rise threshold is set. © 2010 IEEE.

关键词： TDD-CDMA distributed wireless communication system admission control admission control algorithm array element number code division multiple access distributed wireless communication system (DWCS) interference estimation load factor multiuser detection telecommunication congestion control uplink capacity

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