Dynamic Threshold Call Admission Control Policy of Multi-service Wireless Cellular Networks PDF Download
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Author: Yik Keung
Publisher:
ISBN:
Category : Cell phone systems
Languages : en
Pages : 162
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Book Description
Author: Yik Keung
Publisher:
ISBN:
Category : Cell phone systems
Languages : en
Pages : 162
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Book Description
Author: Sanchita Ghosh
Publisher: Springer
ISBN: 3642309976
Category : Technology & Engineering
Languages : en
Pages : 242
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Book Description
Call Admission Control (CAC) and Dynamic Channel Assignments (DCA) are important decision-making problems in mobile cellular communication systems. Current research in mobile communication considers them as two independent problems, although the former greatly depends on the resulting free channels obtained as the outcome of the latter. This book provides a solution to the CAC problem, considering DCA as an integral part of decision-making for call admission. Further, current technical resources ignore movement issues of mobile stations and fluctuation in network load (incoming calls) in the control strategy used for call admission. In addition, the present techniques on call admission offers solution globally for the entire network, instead of considering the cells independently. CAC here has been formulated by two alternative approaches. The first approach aimed at handling the uncertainty in the CAC problem by employing fuzzy comparators. The second approach is concerned with formulation of CAC as an optimization problem to minimize call drop, satisfying a set of constraints on feasibility and availability of channels, hotness of cells, and velocity and angular displacement of mobile stations. Evolutionary techniques, including Genetic Algorithm and Biogeography Based Optimization, have been employed to solve the optimization problems. The proposed approaches outperform traditional methods with respect to grade and quality of services.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Xiii, 154 leaves : ill. ; 30 cm.
Author: Demetres D. Kouvatsos
Publisher: Springer Science & Business Media
ISBN: 3642027415
Category : Business & Economics
Languages : en
Pages : 1073
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Book Description
During recent years a great deal of progress has been made in performance modelling and evaluation of the Internet, towards the convergence of multi-service networks of diverging technologies, supported by internetworking and the evolution of diverse access and switching technologies. The 44 chapters presented in this handbook are revised invited works drawn from PhD courses held at recent HETNETs International Working Conferences on Performance Modelling and Evaluation of Heterogeneous Networks. They constitute essential introductory material preparing the reader for further research and development in the field of performance modelling, analysis and engineering of heterogeneous networks and of next and future generation Internets. The handbook aims to unify relevant material already known but dispersed in the literature, introduce the readers to unfamiliar and unexposed research areas and, generally, illustrate the diversity of research found in the high growth field of convergent heterogeneous networks and the Internet. The chapters have been broadly classified into 12 parts covering the following topics: Measurement Techniques; Traffic Modelling and Engineering; Queueing Systems and Networks; Analytic Methodologies; Simulation Techniques; Performance Evaluation Studies; Mobile, Wireless and Ad Hoc Networks, Optical Networks; QoS Metrics and Algorithms; All IP Convergence and Networking; Network Management and Services; and Overlay Networks.
Author: Paolo Bellavista
Publisher: CRC Press
ISBN: 1420013157
Category : Technology & Engineering
Languages : en
Pages : 1410
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Book Description
Device miniaturization, wireless computing, and mobile communication are driving ubiquitous, pervasive, and transparent computing. Supporting these rapidly evolving technologies requires middleware solutions that address connectivity-level, location-dependent, and context-dependent issues. The Handbook of Mobile Middleware is an exhaustive o
Author: Sherif Said Rashad
Publisher:
ISBN: 9781109931839
Category : Radio frequency allocation
Languages : en
Pages : 144
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Book Description
Our research aims to solve the problems of Call Admission Control (CAC), and resource reservation (RR) in next-generation cellular networks and in the fourth generation (4G) wireless heterogeneous networks.
Author: Leijia Wu
Publisher: Springer Science & Business Media
ISBN: 3642293999
Category : Technology & Engineering
Languages : en
Pages : 40
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Book Description
This book discusses the basic idea of Common Radio Resource Management (CRRM), especially on the Radio Access Technologies selection part of CRRM. It introduces two interaction functions (information reporting function and RRM decision support function) and four interaction degrees (from low to very high) of CRRM. Four possible CRRM topologies (CRRM server, integrated CRRM, Hierarchical CRRM, and CRRM in user terminals) are described. The book presents different Radio Access Technologies selection algorithms, including single criterion and multiple criteria based algorithms are presented and compares them. Finally, the book analyses the advantages and disadvantages of the different selection algorithms.
Author: Chunming Liu
Publisher:
ISBN:
Category : Computers
Languages : en
Pages :
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Book Description
Joint Call Admission Control in Integrated Wireless LAN and 3G Cellular Networks.
Author: Wenlong Ni
Publisher:
ISBN:
Category : Markov processes
Languages : en
Pages : 286
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Book Description
This dissertation investigates the optimal call admission control (CAC) policies for Non Priority Scheme (NPS) and Reserved Channel Scheme (RCS) in wireless cellular networks for the following cases: 1. Homogenous traffic in a cell; 2. Multimedia traffic in a cell; 3. Homogenous traffic in a network; 4. Multimedia traffic in a network. Both new call and handoff call arrival processes are assumed to be Poisson processes, and the call holding times are exponentially distributed with different rate for new calls and handoff calls. Admitting each call would bring a reward to the network provider but holding each call in the system would also incur some cost to the provider. This dissertation focuses on the optimization problem of when to admit or reject a call in order to achieve the maximum reward. By establishing an infinite horizon discounted Semi Markov Decision Process (SMDP) model, this research verifies that the optimal policies of all the four cases mentioned above are state-related control policies for NPS as well as RCS. More over, this research also finds that optimal control policy for Case (1) above is still state-related control policy even if the combined arrival process for new and handoff calls are described by General Distribution. The numerical results presented in this dissertation in both tables and diagrams for all of the above cases are consistent with the theoretical results derived.
Author: Yi Zhang
Publisher:
ISBN:
Category :
Languages : en
Pages : 272
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Book Description
