Chapter 1 Introduction
|
|
- Jennifer Lawson
- 5 years ago
- Views:
Transcription
1 Chapter 1 Introduction 1.1Motivation The past five decades have seen surprising progress in computing and communication technologies that were stimulated by the presence of cheaper, faster, more reliable electronic components in the market. The design of smaller and more powerful devices enabled their mobility, which is quickly changing the way we compute and communicate. Wireless and mobile networks are emerging as networks of choice, due to the flexibility and freedom they offer. The use of satellite, cellular, radio, sensor, and ad hoc wireless networks, wireless local area networks (LAN), small portable computers, and personal communication systems (PCS) is increasing. These networks and devices support on the move computing trend, known as mobile computing, nomadic computing, or computing anywhere anytime. The applications of mobile computing and wireless networks include e-commerce, personal communications, telecommunications, monitoring remote or dangerous environments, national defense (monitoring troop movements), emergency and disaster operations, remote operations of appliances, and wireless Internet access. Explosive growth has been witnessed during the last few years in the demand for mobile communication services, particularly in cities [146]. From available studies, it is clear that this rate of increase in mobile communication services will continue for quite some time [7]. In order to make an arrangement for this projected increase and solving the present crisis of channel scarcity for mobile radio use, some improvements to mobile wireless systems have been recommended. 1.2Cellular Architecture One of the favored and most frequently used techniques for increasing the capacity or efficiency of frequency spectrum utilization is the implementation of a cellular architecture in mobile communication. In the cellular architecture approach, the entire geographical area is divided into cells or zones and each cell is serviced by a mobile 1
2 service station (MSS), which is located at the center of each cell. Fig. 1.1 shows a 6 x 6 grid cellular system. In the cellular systems, instead of using one powerful transmitter, many low power transmitters are deployed throughout the coverage area. Each transmitter talks to many mobiles at once, using one channel per mobile. Channels use pair of frequencies for communication, one frequency for transmitting the call and another frequency for receiving the call. When a mobile device, also called a mobile host (MH), wants to start a communication session with another MH, it sends a connection request to the nearest MSS through a control channel. After receiving the request, the MSS searches for a free radio channel which must not be in use in that cell or in neighboring cells, otherwise interference of signals would occur. If such a free radio channel is found, the MSS will inform the MH to use it. Then, the MH starts sending and receiving data packets through the selected free channel, and the MSS will forward those packets to and from other parts of the wired network Reuse Distance The same channel can be concurrently used by other transmitters if they are separated by a distance called minimum channel reuse distance. In order to give a wide coverage to the mobile users, the cellular network consists of thousands of cells and the network is further split into clusters and the frequency allocations done in one cluster can be applied to other clusters in that network. Fig 1.1: 6 x 6 Grid 2
3 1.3Channel Allocation Increase in demand and the poor quality of existing service led mobile service providers to research ways to improve the quality of service and to support more users in their systems. Because the amount of frequency spectrum available for mobile cellular use was limited, efficient use of the required frequencies was needed for mobile cellular coverage. This requires an efficient channel allocation scheme. The task of a channel allocation scheme is to allocate radio channels to the cells or mobiles in such a way as to minimize call blockings or call droppings, and also to maximize the quality of service (QoS). The channel allocation schemes can be classified into three categories: fixed channel allocation (FCA), dynamic channel allocation (DCA), and hybrid channel allocation. In fixed channel assignment (FCA), radio channels are permanently allocated to each cell for its exclusive use and allocations is done according to traffic load estimation, cochannel and adjacent channel interference constraints. The traffic information is very difficult to predict due to the mobility of users. Therefore, FCA scheme is not frequency efficient because channel allocation cannot adapt according to the dynamically changing distribution of mobile terminals in the cell or area. In order to overcome the problems associated with FCA, various traffic adaptive channel allocation schemes have been developed such as dynamic channel assignment (DCA) and hybrid channel assignment (HCA). The DCA scheme is of two types: centralized and distributed. In centralized DCA, all channels are kept in a pool managed by a central controller. The related base station will ask the central controller for a channel when a new call request arrives and when the call is completed, the channel is returned to the central channel pool. In distributed DCA, a radio channel is chosen by the local base station of the cell where the call is initiated. A channel is suitable for use in any cell provided that co-channel and adjacent channel signal interference constraints are satisfied. As more than one channel 3
4 may possibly be available in the channel pool to be allocated to a call when required, some approach must be applied to choose the allocated channel. Although the DCA schemes can adapt channel allocation to dynamic traffic loads, it can also considerably increase the network complexity due to co-channel cell locking and other channel management because it is a call-by-call based allocation. In order to maintain both cochannel and adjacent channel interference below a certain threshold, cells within the required minimum channel reuse distance from a cell that borrows a channel from the central pool cannot use the same channel. DCA also requires fast real-time signal processing and associated channel database updating. A compromise between the radio spectrum efficiency and channel management complexity is HCA, which combines FCA with DCA. In HCA, all available channels are divided into two groups, FCA group and DCA group, with an optimal ratio. It has been shown that both DCA and HCA can achieve a better utilization of radio channel resources than FCA in a light traffic load situation, due to the fact that both schemes can adapt to traffic load dynamics. However, they may perform less satisfactorily than FCA in a heavy traffic load situation due to the necessary channel locking Channel Borrowing Another approach to adaptive channel assignment is channel borrowing, in which the channel resources are divided into borrowable and non-borrowable channel groups. The non-borrowable group is assigned to a cell in the same way as FCA, When all of its fixed channels are occupied, a cell borrows channels from its neighbor cells which have a light traffic load. More recently, a channel borrowing scheme called channel borrowing without locking (CBWL) is proposed, where the C channels of each base station are divided into seven distinct groups. The C 0 channels of group 0 are reserved for exclusive use of the given cell. The (C i, i = 1, 2,., 6) channels of the other six groups can be borrowed by the six adjacent cells respectively, one group by one adjacent cell. Each borrowing channel is used with a limited power level. That is, the borrowed channel is directionally limited as well as power limited. Therefore, the channel locking for cochannel cells is not necessary. 4
5 1.4Problem Specification Even though, the growth of mobile communication users is very rapid, the radio channel available for communication is very limited. Thus, for supporting large number of mobile users, efficient use of limited radio spectrum is required. In order to reuse radio spectrum, wireless systems use cellular architecture for efficient use of spectrum. A radio channel i can be used by a cell c without any interference, if it is not simultaneously used by any other cell within the minimum reuse distance of cell c. Thus, the problem of channel allocation is to design architecture and a scheme for allocating channels to cells in order to eliminate co-channel, adjacent channel, co-site interference, for mobile calls. Considerable efforts have been devoted to provide interference free calls, but some issues have been neglected because of complexity involved in designing optimum algorithms. 1.5Objectives The objective of this research is to minimize the call blockings and call droppings with the efficient use of spectrum, and this can be made possible with the design and implementation of efficient hybrid channel allocation algorithms for channel allocation. To achieve this, a new strategy in channel allocation schemes is proposed which uses Agent and Multi-Agent approach to make dynamic decision and do the computation in the remote destination, in order to reduce the network traffic and improve the efficiency of resource allocation. The contributions of this research are: Minimize blocked calls Minimize dropped calls Minimize channel acquisition time. Maximize the number of communication sessions Ability to adapt to changing load The effort to adapt to the above requirements resulted in the development of Optimized blocking dropping load balancing (OBDLB) algorithm. 5
6 1.6Organization of the Thesis The remainder of the thesis is organized as follows. Chapter 2 provides an introduction of cellular concept. Various ways of frequency planning, frequency reuse and radio channel allocation are also shown. It also explains various variables that affect the capacity of a cellular system. Chapter 3 presents a comprehensive survey of the channel allocation problem. The large number of existing channel allocation methods are classified, which categorize the various channel allocation methods based upon the techniques used by the system to obtain network information. Different agent architectures are also discussed in this chapter. Chapter 4 explains the Hybrid Multi-Agent Architecture that is applied to solve the channel allocation problem. Functionality of each layer of INTERRAP agent architecture is also provided, along with the Optimized Blocking Dropping Load Balancing (OBDLB) Algorithm to find a solution of channel allocation problem under different traffic loads. Chapter 5 includes the results of OBDLB algorithm, which are implemented on multiagent systems. The proposed scheme is also compared with the existing schemes i.e. Fixed Channel Allocation and Dynamic Channel Allocation. Chapter 6 draws some conclusions suggested by the experimental analysis and point out some possible future developments in the research in this field. 6
GSM FREQUENCY PLANNING
GSM FREQUENCY PLANNING PROJECT NUMBER: PRJ070 BY NAME: MUTONGA JACKSON WAMBUA REG NO.: F17/2098/2004 SUPERVISOR: DR. CYRUS WEKESA EXAMINER: DR. MAURICE MANG OLI Introduction GSM is a cellular mobile network
More informationETI2511-WIRELESS COMMUNICATION II HANDOUT I 1.0 PRINCIPLES OF CELLULAR COMMUNICATION
ETI2511-WIRELESS COMMUNICATION II HANDOUT I 1.0 PRINCIPLES OF CELLULAR COMMUNICATION 1.0 Introduction The substitution of a single high power Base Transmitter Stations (BTS) by several low BTSs to support
More informationDISTRIBUTED DYNAMIC CHANNEL ALLOCATION ALGORITHM FOR CELLULAR MOBILE NETWORK
DISTRIBUTED DYNAMIC CHANNEL ALLOCATION ALGORITHM FOR CELLULAR MOBILE NETWORK 1 Megha Gupta, 2 A.K. Sachan 1 Research scholar, Deptt. of computer Sc. & Engg. S.A.T.I. VIDISHA (M.P) INDIA. 2 Asst. professor,
More informationChapter 8 Traffic Channel Allocation
Chapter 8 Traffic Channel Allocation Prof. Chih-Cheng Tseng tsengcc@niu.edu.tw http://wcnlab.niu.edu.tw EE of NIU Chih-Cheng Tseng 1 Introduction What is channel allocation? It covers how a BS should assign
More informationPerformances Analysis of Different Channel Allocation Schemes for Personal Mobile Communication Networks
Performances Analysis of Different Channel Allocation Schemes for Personal Mobile Communication Networks 1 GABRIEL SIRBU, ION BOGDAN 1 Electrical and Electronics Engineering Dept., Telecommunications Dept.
More informationSurvey of Call Blocking Probability Reducing Techniques in Cellular Network
International Journal of Scientific and Research Publications, Volume 2, Issue 12, December 2012 1 Survey of Call Blocking Probability Reducing Techniques in Cellular Network Mrs.Mahalungkar Seema Pankaj
More informationData and Computer Communications
Data and Computer Communications Chapter 14 Cellular Wireless Networks Eighth Edition by William Stallings Cellular Wireless Networks key technology for mobiles, wireless nets etc developed to increase
More informationCMC VIDYA SAGAR P. UNIT IV FREQUENCY MANAGEMENT AND CHANNEL ASSIGNMENT Numbering and grouping, Setup access and paging
UNIT IV FREQUENCY MANAGEMENT AND CHANNEL ASSIGNMENT Numbering and grouping, Setup access and paging channels, Channel assignments to cell sites and mobile units, Channel sharing and barrowing, sectorization,
More informationChapter 1 Introduction to Mobile Computing (16 M)
Chapter 1 Introduction to Mobile Computing (16 M) 1.1 Introduction to Mobile Computing- Mobile Computing Functions, Mobile Computing Devices, Mobile Computing Architecture, Evolution of Wireless Technology.
More informationSEN366 (SEN374) (Introduction to) Computer Networks
SEN366 (SEN374) (Introduction to) Computer Networks Prof. Dr. Hasan Hüseyin BALIK (8 th Week) Cellular Wireless Network 8.Outline Principles of Cellular Networks Cellular Network Generations LTE-Advanced
More informationUnit-1 The Cellular Concept
Unit-1 The Cellular Concept 1.1 Introduction to Cellular Systems Solves the problem of spectral congestion and user capacity. Offer very high capacity in a limited spectrum without major technological
More informationEENG473 Mobile Communications Module 2 : Week # (8) The Cellular Concept System Design Fundamentals
EENG473 Mobile Communications Module 2 : Week # (8) The Cellular Concept System Design Fundamentals Improving Capacity in Cellular Systems Cellular design techniques are needed to provide more channels
More informationData and Computer Communications. Tenth Edition by William Stallings
Data and Computer Communications Tenth Edition by William Stallings Data and Computer Communications, Tenth Edition by William Stallings, (c) Pearson Education - 2013 CHAPTER 10 Cellular Wireless Network
More informationCommunication Switching Techniques
Communication Switching Techniques UNIT 5 P.M.Arun Kumar, Assistant Professor, Department of IT, Sri Krishna College of Engineering and Technology, Coimbatore. PRINCIPLES OF CELLULAR NETWORKS TOPICS TO
More informationUNIT- 3. Introduction. The cellular advantage. Cellular hierarchy
UNIT- 3 Introduction Capacity expansion techniques include the splitting or sectoring of cells and the overlay of smaller cell clusters over larger clusters as demand and technology increases. The cellular
More informationUNIT-II 1. Explain the concept of frequency reuse channels. Answer:
UNIT-II 1. Explain the concept of frequency reuse channels. Concept of Frequency Reuse Channels: A radio channel consists of a pair of frequencies one for each direction of transmission that is used for
More informationA Glimps at Cellular Mobile Radio Communications. Dr. Erhan A. İnce
A Glimps at Cellular Mobile Radio Communications Dr. Erhan A. İnce 28.03.2012 CELLULAR Cellular refers to communications systems that divide a geographic region into sections, called cells. The purpose
More informationLECTURE 12. Deployment and Traffic Engineering
1 LECTURE 12 Deployment and Traffic Engineering Cellular Concept 2 Proposed by Bell Labs in 1971 Geographic Service divided into smaller cells Neighboring cells do not use same set of frequencies to prevent
More informationWireless in the Real World. Principles
Wireless in the Real World Principles Make every transmission count E.g., reduce the # of collisions E.g., drop packets early, not late Control errors Fundamental problem in wless Maximize spatial reuse
More informationECE 476/ECE 501C/CS Wireless Communication Systems Winter Lecture 3: Cellular Fundamentals
ECE 476/ECE 501C/CS 513 - Wireless Communication Systems Winter 2004 Lecture 3: Cellular Fundamentals Chapter 3 - The Cellular Concept - System Design Fundamentals I. Introduction Goals of a Cellular System
More informationCellular Wireless Networks and GSM Architecture. S.M. Riazul Islam, PhD
Cellular Wireless Networks and GSM Architecture S.M. Riazul Islam, PhD Desirable Features More Capacity Less Power Larger Coverage Cellular Network Organization Multiple low power transmitters 100w or
More informationAdaptive Hybrid Channel Assignment in Wireless Mobile Network via Genetic Algorithm
Adaptive Hybrid Channel Assignment in Wireless Mobile Network via Genetic Algorithm Y.S. Chia Z.W. Siew A. Kiring S.S. Yang K.T.K. Teo Modelling, Simulation and Computing Laboratory School of Engineering
More information2.4 OPERATION OF CELLULAR SYSTEMS
INTRODUCTION TO CELLULAR SYSTEMS 41 a no-traffic spot in a city. In this case, no automotive ignition noise is involved, and no cochannel operation is in the proximity of the idle-channel receiver. We
More informationWireless Network Pricing Chapter 2: Wireless Communications Basics
Wireless Network Pricing Chapter 2: Wireless Communications Basics Jianwei Huang & Lin Gao Network Communications and Economics Lab (NCEL) Information Engineering Department The Chinese University of Hong
More informationReliable Videos Broadcast with Network Coding and Coordinated Multiple Access Points
Reliable Videos Broadcast with Network Coding and Coordinated Multiple Access Points Pouya Ostovari and Jie Wu Computer & Information Sciences Temple University Center for Networked Computing http://www.cnc.temple.edu
More informationMobile & Wireless Networking. Lecture 4: Cellular Concepts & Dealing with Mobility. [Reader, Part 3 & 4]
192620010 Mobile & Wireless Networking Lecture 4: Cellular Concepts & Dealing with Mobility [Reader, Part 3 & 4] Geert Heijenk Outline of Lecture 4 Cellular Concepts q Introduction q Cell layout q Interference
More informationMOBILE COMMUNICATIONS (650520) Part 3
Philadelphia University Faculty of Engineering Communication and Electronics Engineering MOBILE COMMUNICATIONS (650520) Part 3 Dr. Omar R Daoud 1 Trunking and Grade Services Trunking: A means for providing
More informationEfficient Scheme for Dynamic Channel Allocation Using Intelligent Agent in Mobile Communication
Efficient Scheme for Dynamic Channel Allocation Using Intelligent Agent in Mobile Communication Swati M. Khandare 1, R. R. Sedamkar 2 1 Department of Electronics & Telecommunication Engineering, University
More informationWireless Cellular Networks. Base Station - Mobile Network
Wireless Cellular Networks introduction frequency reuse channel assignment strategies techniques to increase capacity handoff cellular standards 1 Base Station - Mobile Network RCC RVC FVC FCC Forward
More informationData and Computer Communications. Chapter 10 Cellular Wireless Networks
Data and Computer Communications Chapter 10 Cellular Wireless Networks Cellular Wireless Networks 5 PSTN Switch Mobile Telecomm Switching Office (MTSO) 3 4 2 1 Base Station 0 2016-08-30 2 Cellular Wireless
More informationMRN -4 Frequency Reuse
Politecnico di Milano Facoltà di Ingegneria dell Informazione MRN -4 Frequency Reuse Mobile Radio Networks Prof. Antonio Capone Assignment of channels to cells o The multiple access technique in cellular
More informationChapter 1 Introduction to Mobile Computing
Chapter 1 Introduction to Mobile Computing 1.1 Introduction to Mobile Computing- Mobile Computing Functions, Mobile Computing Devices, Mobile Computing Architecture, Evolution of Wireless Technology. 1.2
More informationChapter 3 Ahmad Bilal ahmadbilal.webs.com
Chapter 3 A Quick Recap We learned about cell and reuse factor. We looked at traffic capacity We looked at different Earling Formulas We looked at channel strategies We had a look at Handoff Interference
More informationThe Cellular Concept. History of Communication. Frequency Planning. Coverage & Capacity
The Cellular Concept History of Communication Frequency Planning Coverage & Capacity Engr. Mian Shahzad Iqbal Lecturer Department of Telecommunication Engineering Before GSM: Mobile Telephony Mile stones
More information(8+8) 6. (a) Explain the following in detail concern to the mobile system?
SET - 1 1. (a) Explain the operation of the cellular system? (b) Discuss analog cellular systems (AMPS) in detail? 2. (a) What is meant by frequency reuse? Explain various frequency reuse schemes and find
More informationGTBIT ECE Department Wireless Communication
Q-1 What is Simulcast Paging system? Ans-1 A Simulcast Paging system refers to a system where coverage is continuous over a geographic area serviced by more than one paging transmitter. In this type of
More informationWireless Communications Principles and Practice 2 nd Edition Prentice-Hall. By Theodore S. Rappaport
Wireless Communications Principles and Practice 2 nd Edition Prentice-Hall By Theodore S. Rappaport Chapter 3 The Cellular Concept- System Design Fundamentals 3.1 Introduction January, 2004 Spring 2011
More informationEKT 450 Mobile Communication System
EKT 450 Mobile Communication System Chapter 6: The Cellular Concept Dr. Azremi Abdullah Al-Hadi School of Computer and Communication Engineering azremi@unimap.edu.my 1 Introduction Introduction to Cellular
More informationDynamic Frequency Hopping in Cellular Fixed Relay Networks
Dynamic Frequency Hopping in Cellular Fixed Relay Networks Omer Mubarek, Halim Yanikomeroglu Broadband Communications & Wireless Systems Centre Carleton University, Ottawa, Canada {mubarek, halim}@sce.carleton.ca
More informationCHAPTER 19 CELLULAR TELEPHONE CONCEPTS # DEFINITION TERMS
CHAPTER 19 CELLULAR TELEPHONE CONCEPTS # DEFINITION TERMS 1) The term for mobile telephone services which began in 1940s and are sometimes called Manual telephone systems. Mobile Telephone Manual System
More informationChutima Prommak and Boriboon Deeka. Proceedings of the World Congress on Engineering 2007 Vol II WCE 2007, July 2-4, 2007, London, U.K.
Network Design for Quality of Services in Wireless Local Area Networks: a Cross-layer Approach for Optimal Access Point Placement and Frequency Channel Assignment Chutima Prommak and Boriboon Deeka ESS
More informationChapter- 5. Performance Evaluation of Conventional Handoff
Chapter- 5 Performance Evaluation of Conventional Handoff Chapter Overview This chapter immensely compares the different mobile phone technologies (GSM, UMTS and CDMA). It also presents the related results
More informationChapter 1 INTRODUCTION
Chapter 1 INTRODUCTION 1 The History of Mobile Radio Communication (1/3) 1880: Hertz Initial demonstration of practical radio communication 1897: Marconi Radio transmission to a tugboat over an 18 mi path
More informationUCS-805 MOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2011
Location Management for Mobile Cellular Systems SLIDE #3 UCS-805 MOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2011 ALAK ROY. Assistant Professor Dept. of CSE NIT Agartala Email-alakroy.nerist@gmail.com
More informationRedline Communications Inc. Combining Fixed and Mobile WiMAX Networks Supporting the Advanced Communication Services of Tomorrow.
Redline Communications Inc. Combining Fixed and Mobile WiMAX Networks Supporting the Advanced Communication Services of Tomorrow WiMAX Whitepaper Author: Frank Rayal, Redline Communications Inc. Redline
More informationUNIT - 1 [INTRODUCTION TO WIRELESS COMMUNICATION SYSTEMS] OLUTION OF MOBILE RADIO COMMUNICATION
i CONTENTS UNIT - 1 [INTRODUCTION TO WIRELESS COMMUNICATION SYSTEMS]... 1.1-1.26 1.1 INTRODUCTION... 1.2 1.2 EVOL OLUTION OF MOBILE RADIO COMMUNICATION... 1.2 1.3 EXAMPLES OF WIRELESS COMMUNICATION SYSTEMS...
More informationIntelligent Handoff in Cellular Data Networks Based on Mobile Positioning
Intelligent Handoff in Cellular Data Networks Based on Mobile Positioning Prasannakumar J.M. 4 th semester MTech (CSE) National Institute Of Technology Karnataka Surathkal 575025 INDIA Dr. K.C.Shet Professor,
More informationHIERARCHICAL microcell/macrocell architectures have
836 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 46, NO. 4, NOVEMBER 1997 Architecture Design, Frequency Planning, and Performance Analysis for a Microcell/Macrocell Overlaying System Li-Chun Wang,
More informationCross-layer Network Design for Quality of Services in Wireless Local Area Networks: Optimal Access Point Placement and Frequency Channel Assignment
Cross-layer Network Design for Quality of Services in Wireless Local Area Networks: Optimal Access Point Placement and Frequency Channel Assignment Chutima Prommak and Boriboon Deeka Abstract This paper
More informationT. Yoo, E. Setton, X. Zhu, Pr. Goldsmith and Pr. Girod Department of Electrical Engineering Stanford University
Cross-layer design for video streaming over wireless ad hoc networks T. Yoo, E. Setton, X. Zhu, Pr. Goldsmith and Pr. Girod Department of Electrical Engineering Stanford University Outline Cross-layer
More informationChapter 5 Acknowledgment:
Chapter 5 Acknowledgment: This material is based on the slides formatted by Dr Sunilkumar S. Manvi and Dr Mahabaleshwar S. Kakkasageri, the authors of the textbook: Wireless and Mobile Networks, concepts
More informationWireless and mobile communication
Wireless and mobile communication Wireless communication Multiple Access FDMA TDMA CDMA SDMA Mobile Communication GSM GPRS GPS Bluetooth Content What is wireless communication? In layman language it is
More information03_57_104_final.fm Page 97 Tuesday, December 4, :17 PM. Problems Problems
03_57_104_final.fm Page 97 Tuesday, December 4, 2001 2:17 PM Problems 97 3.9 Problems 3.1 Prove that for a hexagonal geometry, the co-channel reuse ratio is given by Q = 3N, where N = i 2 + ij + j 2. Hint:
More informationDeployment and Radio Resource Reuse in IEEE j Multi-hop Relay Network in Manhattan-like Environment
Deployment and Radio Resource Reuse in IEEE 802.16j Multi-hop Relay Network in Manhattan-like Environment I-Kang Fu and Wern-Ho Sheen Department of Communication Engineering National Chiao Tung University
More informationRRM Radio Networks Radio Resource Management in Area Coverage Networks
RRM Radio Networks Radio Resource Management in Area Coverage Networks Roberto Verdone roberto.verdone@unibo.it +39 051 20 93817 Office Hours: Monday 4 5 pm A.Y. 2017-18 Credits: 6 Mobile RAN Architecture:
More informationPERFORMANCE ENHANCEMENT OF DYNAMIC CHANNEL ALLOCATION IN CELLULAR MOBILE NETWORKS BASED ON CARRIER-TO-NOISE INTERFERENCE RATIO
PERFORMANCE ENHANCEMENT OF DYNAMIC CHANNEL ALLOCATION IN CELLULAR MOBILE NETWORKS BASED ON CARRIER-TO-NOISE INTERFERENCE RATIO Md. Sadek Ali 1, M. A. Masud 2, Md. Shariful Islam 1, Md. Alamgir Hossain
More informationSPECTRUM SHARING: OVERVIEW AND CHALLENGES OF SMALL CELLS INNOVATION IN THE PROPOSED 3.5 GHZ BAND
SPECTRUM SHARING: OVERVIEW AND CHALLENGES OF SMALL CELLS INNOVATION IN THE PROPOSED 3.5 GHZ BAND David Oyediran, Graduate Student, Farzad Moazzami, Advisor Electrical and Computer Engineering Morgan State
More informationAn Adaptive Distributed Channel Allocation Strategy for Mobile Cellular Networks
Journal of Parallel and Distributed Computing 60, 451473 (2000) doi:10.1006jpdc.1999.1614, available online at http:www.idealibrary.com on An Adaptive Distributed Channel Allocation Strategy for Mobile
More informationNational Institute of Technology Mizoram, Aizawl , India
Analysis of Dynamic Channel Allocation based on Blocking Probability for Cellular Networks Remika Ngangbam 1,Pragati Singh 2,F. Lalrinfeli 3 1,2,3 National Institute of Technology Mizoram, Aizawl 796012,
More informationEvaluation of a channel assignment scheme in mobile network systems
DOI 10.1186/s13673-016-0075-0 RESEARCH Open Access Evaluation of a channel assignment scheme in mobile network systems Nahla Nurelmadina 1, Ibtehal Nafea 1 and Muhammad Younas 2* *Correspondence: m.younas@brookes.ac.uk
More informationECS 445: Mobile Communications The Cellular Concept
Sirindhorn International Institute of Technology Thammasat University School of Information, Computer and Communication Technology ECS 445: Mobile Communications The Cellular Concept Prapun Suksompong,
More information2018/5/23. YU Xiangyu
2018/5/23 YU Xiangyu yuxy@scut.edu.cn Structure of Mobile Communication System Cell Handover/Handoff Roaming Mobile Telephone Switching Office Public Switched Telephone Network Tomasi Advanced Electronic
More informationPage 1. Problems with 1G Systems. Wireless Wide Area Networks (WWANs) EEC173B/ECS152C, Spring Cellular Wireless Network
EEC173B/ECS152C, Spring 2009 Wireless Wide Area Networks (WWANs) Cellular Wireless Network Architecture and Protocols Applying concepts learned in first two weeks: Frequency planning, channel allocation
More informationLecture #6 Basic Concepts of Cellular Transmission (p3)
November 2014 Integrated Technical Education Cluster At AlAmeeria E-716-A Mobile Communications Systems Lecture #6 Basic Concepts of Cellular Transmission (p3) Instructor: Dr. Ahmad El-Banna Agenda Duplexing
More informationBloodhound RMS Product Overview
Page 2 of 10 What is Guard Monitoring? The concept of personnel monitoring in the security industry is not new. Being able to accurately account for the movement and activity of personnel is not only important
More informationAirborne Satellite Communications on the Move Solutions Overview
Airborne Satellite Communications on the Move Solutions Overview High-Speed Broadband in the Sky The connected aircraft is taking the business of commercial airline to new heights. In-flight systems are
More informationSLIDE #2.1. MOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2012. ALAK ROY. Assistant Professor Dept. of CSE NIT Agartala
Mobile Cellular Systems SLIDE #2.1 MOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2012 ALAK ROY. Assistant Professor Dept. of CSE NIT Agartala Email-alakroy.nerist@gmail.com What we will learn in this
More informationLoad Balancing for Centralized Wireless Networks
Load Balancing for Centralized Wireless Networks Hong Bong Kim and Adam Wolisz Telecommunication Networks Group Technische Universität Berlin Sekr FT5 Einsteinufer 5 0587 Berlin Germany Email: {hbkim,
More informationEENG473 Mobile Communications Module 2 : Week # (4) The Cellular Concept System Design Fundamentals
EENG473 Mobile Communications Module 2 : Week # (4) The Cellular Concept System Design Fundamentals Frequency reuse or frequency planning : The design process of selecting and allocating channel groups
More informationMultiple Access. Difference between Multiplexing and Multiple Access
Multiple Access (MA) Satellite transponders are wide bandwidth devices with bandwidths standard bandwidth of around 35 MHz to 7 MHz. A satellite transponder is rarely used fully by a single user (for example
More informationWireless and Mobile Network Architecture. Outline. Introduction. Cont. Chapter 1: Introduction
Wireless and Mobile Network Architecture Chapter 1: Introduction Prof. Yuh-Shyan Chen Department of Computer Science and Information Engineering National Taipei University Sep. 2006 Outline Introduction
More informationWIRELESS 20/20. Twin-Beam Antenna. A Cost Effective Way to Double LTE Site Capacity
WIRELESS 20/20 Twin-Beam Antenna A Cost Effective Way to Double LTE Site Capacity Upgrade 3-Sector LTE sites to 6-Sector without incurring additional site CapEx or OpEx and by combining twin-beam antenna
More informationWireless and Mobile Network Architecture
Wireless and Mobile Network Architecture Chapter 1: Introduction Prof. Yuh-Shyan Chen Department of Computer Science and Information Engineering National Taipei University Sep. 2006 1 Outline Introduction
More informationBeamforming and Binary Power Based Resource Allocation Strategies for Cognitive Radio Networks
1 Beamforming and Binary Power Based Resource Allocation Strategies for Cognitive Radio Networks UWB Walter project Workshop, ETSI October 6th 2009, Sophia Antipolis A. Hayar EURÉCOM Institute, Mobile
More informationCellular systems 02/10/06
Cellular systems 02/10/06 Cellular systems Implements space division multiplex: base station covers a certain transmission area (cell) Mobile stations communicate only via the base station Cell sizes from
More informationMULTI-HOP RADIO ACCESS CELLULAR CONCEPT FOR FOURTH-GENERATION MOBILE COMMUNICATION SYSTEMS
MULTI-HOP RADIO ACCESS CELLULAR CONCEPT FOR FOURTH-GENERATION MOBILE COMMUNICATION SYSTEMS MR. AADITYA KHARE TIT BHOPAL (M.P.) PHONE 09993716594, 09827060004 E-MAIL aadkhare@rediffmail.com aadkhare@gmail.com
More informationMesh Networks. unprecedented coverage, throughput, flexibility and cost efficiency. Decentralized, self-forming, self-healing networks that achieve
MOTOROLA TECHNOLOGY POSITION PAPER Mesh Networks Decentralized, self-forming, self-healing networks that achieve unprecedented coverage, throughput, flexibility and cost efficiency. Mesh networks technology
More informationBASIC CONCEPTS OF HSPA
284 23-3087 Uen Rev A BASIC CONCEPTS OF HSPA February 2007 White Paper HSPA is a vital part of WCDMA evolution and provides improved end-user experience as well as cost-efficient mobile/wireless broadband.
More informationCapacity Enhancement in Wireless Networks using Directional Antennas
Capacity Enhancement in Wireless Networks using Directional Antennas Sedat Atmaca, Celal Ceken, and Ismail Erturk Abstract One of the biggest drawbacks of the wireless environment is the limited bandwidth.
More information2016/10/14. YU Xiangyu
2016/10/14 YU Xiangyu yuxy@scut.edu.cn Structure of Mobile Communication System Cell Handover/Handoff Roaming Mobile Telephone Switching Office Public Switched Telephone Network Tomasi Advanced Electronic
More informationEasyChair Preprint. A User-Centric Cluster Resource Allocation Scheme for Ultra-Dense Network
EasyChair Preprint 78 A User-Centric Cluster Resource Allocation Scheme for Ultra-Dense Network Yuzhou Liu and Wuwen Lai EasyChair preprints are intended for rapid dissemination of research results and
More informationCurrent Trends on Spectrum Management
Current Trends on Spectrum Management Daniel Leza Presented at the ITU Seminar on Establishing New Regulators in the Asian Pacific Region October 26-27, 2007 Vientiane, LAO P.D.R. ENSURING TELECOMMUNICATIONS
More informationStudy of Location Management for Next Generation Personal Communication Networks
Study of Location Management for Next Generation Personal Communication Networks TEERAPAT SANGUANKOTCHAKORN and PANUVIT WIBULLANON Telecommunications Field of Study School of Advanced Technologies Asian
More informationJoint Spectrum and Power Allocation for Inter-Cell Spectrum Sharing in Cognitive Radio Networks
Joint Spectrum and Power Allocation for Inter-Cell Spectrum Sharing in Cognitive Radio Networks Won-Yeol Lee and Ian F. Akyildiz Broadband Wireless Networking Laboratory School of Electrical and Computer
More informationWireless Networked Systems
Wireless Networked Systems CS 795/895 - Spring 2013 Lec #4: Medium Access Control Power/CarrierSense Control, Multi-Channel, Directional Antenna Tamer Nadeem Dept. of Computer Science Power & Carrier Sense
More informationChapter 3: Cellular concept
Chapter 3: Cellular concept Introduction to cellular concept: The cellular concept was a major breakthrough in solving the problem of spectral congestion and user capacity. It offered very high capacity
More informationLicensing of Telemetry Systems in the VHF and UHF Spectrum Bands Guidelines for Applicants
Licensing of Telemetry Systems in the VHF and UHF Spectrum Bands Guidelines for Applicants Guidelines Reference: ComReg 14/56R1 Date: 17/05/2017 An Coimisiún um Rialáil Cumarsáide Commission for Communications
More informationWireless WANS and MANS. Chapter 3
Wireless WANS and MANS Chapter 3 Cellular Network Concept Use multiple low-power transmitters (100 W or less) Areas divided into cells Each served by its own antenna Served by base station consisting of
More informationSignal Processing in Mobile Communication Using DSP and Multi media Communication via GSM
Signal Processing in Mobile Communication Using DSP and Multi media Communication via GSM 1 M.Sivakami, 2 Dr.A.Palanisamy 1 Research Scholar, 2 Assistant Professor, Department of ECE, Sree Vidyanikethan
More informationCoordinated and Distributed MIMO turning wireless networks on their heads? Gerard Borg
Coordinated and Distributed MIMO turning wireless networks on their heads? Gerard Borg 1 Coordinated and Distributed MIMO Outline Orientation: Coordinated and distributed MIMO vs SISO Theory: Capacity
More informationPartial overlapping channels are not damaging
Journal of Networking and Telecomunications (2018) Original Research Article Partial overlapping channels are not damaging Jing Fu,Dongsheng Chen,Jiafeng Gong Electronic Information Engineering College,
More informationInter-Cell Interference Coordination in Wireless Networks
Inter-Cell Interference Coordination in Wireless Networks PhD Defense, IRISA, Rennes, 2015 Mohamad Yassin University of Rennes 1, IRISA, France Saint Joseph University of Beirut, ESIB, Lebanon Institut
More informationTransmission Performance of Flexible Relay-based Networks on The Purpose of Extending Network Coverage
Transmission Performance of Flexible Relay-based Networks on The Purpose of Extending Network Coverage Ardian Ulvan 1 and Robert Bestak 1 1 Czech Technical University in Prague, Technicka 166 7 Praha 6,
More information3.1. Historical Overview. Citizens` Band Radio Cordless Telephones Improved Mobile Telephone Service (IMTS)
III. Cellular Radio Historical Overview Introduction to the Advanced Mobile Phone System (AMPS) AMPS Control System Security and Privacy Cellular Telephone Specifications and Operation 3.1. Historical
More informationBefore the FEDERAL COMMUNICATIONS COMMISSION Washington, DC 20554
Before the FEDERAL COMMUNICATIONS COMMISSION Washington, DC 20554 In the Matter of ) GN Docket No. 12-354 Amendment of the Commission s Rules with ) Regard to Commercial Operations in the 3550- ) 3650
More informationMOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2012
Location Management for Mobile Cellular Systems MOBILE COMPUTING NIT Agartala, Dept of CSE Jan-May,2012 ALAK ROY. Assistant Professor Dept. of CSE NIT Agartala Email-alakroy.nerist@gmail.com Cellular System
More informationWe are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists. International authors and editors
We are IntechOpen, the world s leading publisher of Open Access books Built by scientists, for scientists 3,8 6, 2M Open access books available International authors and editors Downloads Our authors are
More informationDynamic Allocation of Downlink and Uplink Resource for Broadband Services in Fixed Wireless Networks. Kin K. Leung and Arty Srivastava
Dynamic Allocation of Downlink and Uplink Resource for Broadband Services in Fixed Wireless Networks Kin K. Leung and Arty Srivastava AT&T Labs, Room 4-120 100 Schulz Drive Red Bank, NJ 07701-7033 Phone:
More informationChapter 1 Introduction
Chapter 1 Introduction 1.1 Definition of mobile radio communications and examples Definition: Mobile communication means that the sender and/or receiver are not at a fixed location. The obvious means to
More informationEvolutionary Optimization for the Channel Assignment Problem in Wireless Mobile Network
(649 -- 917) Evolutionary Optimization for the Channel Assignment Problem in Wireless Mobile Network Y.S. Chia, Z.W. Siew, S.S. Yang, H.T. Yew, K.T.K. Teo Modelling, Simulation and Computing Laboratory
More information