Resource Allocation in Hierarchical Cellular Systems

, by Ortigoza-Guerrero, Lauro; Aghvami, A. Hamid

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ISBN: 9781580530668 | 1580530664
Cover: Hardcover
Copyright: 11/1/1999

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Get a complete classification of resource allocation strategies (RAS) and their application to micro- and macrocellular systems with this helpful new book. It addresses the problem of resource allocation in mobile cellular networks, and presents RAS for operation in Universal Mobile Telecommunications systems formed of Hierarchical Cellular structures, which result in improved service for cellular customers.

Preface	p. xiii
Introduction	p. 1
Overall Descriptive View of Contents	p. 1
The Need for WCMTS	p. 2
Basic Principles of WCMTS Operation	p. 2
HCSs	p. 3
Radio Resource Management in HCS	p. 4
Overall View of Technical Content of the Book	p. 4
Channel Allocation Strategies	p. 4
Performance Analysis Methods for a Single-Layer Microcellular System	p. 5
MASs for Universal Mobile Telecommunication Schemes in Manhattan-like Environments	p. 5
HCS for WCMTS	p. 6
A Distributed Dynamic Resource Allocation Strategy for HCS	p. 6
Use of DDRA in Realistic HCS with a UMTS MAS	p. 6
Resource Allocation Strategies--an Overview	p. 7
What Is a CAS?	p. 7
Disjoint Channels	p. 7
Cellular Reuse of Channels	p. 8
Types of CASs and Their Classification	p. 8
FCA	p. 9
Reuse Distance and Cell Patterns	p. 9
Channel Borrowing Schemes	p. 11
Simple Channel Borrowing	p. 13
Hybrid Channel Borrowing	p. 14
DCA	p. 15
Centralized DCA Schemes	p. 16
Distributed DCA Schemes	p. 17
HCA	p. 19
Other Strategies	p. 20
CAS Handling Handovers	p. 20
Reuse Partitioning	p. 21
Directed Retry	p. 22
The Bunch Concept	p. 23
Channel Allocation for HCS	p. 23
Summary	p. 24
DCA with Prioritization for Handover Calls in Microcellular Environments	p. 35
Introduction	p. 35
The Problem of Handovers in Microcellular Environments	p. 35
Types of Handover Strategies	p. 36
Methods of Decreasing New Call Blocking	p. 37
Analysis Later in This Chapter	p. 37
Analytical Method for Calculating System Probabilities pb, ph, pft, and pnc	p. 38
Assumptions and Symbols	p. 38
pb and ph with NPS	p. 39
pb and ph with RCS	p. 41
Probabilities of Forced Termination and Call Not Completed, pft and pnc	p. 42
Calculation of Probability Values	p. 46
CAS	p. 47
Channel Allocation Description	p. 47
Channel Releasing	p. 49
Modifications to CPMCB	p. 49
Practical Implementation of CPMCB	p. 50
Evaluation Environment	p. 51
Examples and Discussions	p. 54
Uniform Traffic	p. 54
Nonuniform Traffic	p. 61
Summary	p. 68
Capacity Assessment for UMTS	p. 71
UMTS Terrestrial Radio Access	p. 71
The FRAMES Project	p. 72
ETSI SMG2 Studies	p. 72
The Decision on MAS for UMTS	p. 74
The Purpose of This Chapter	p. 75
WB-TD/CDMA-TDD	p. 76
WB-CDMA-FDD	p. 77
CASs	p. 78
CASs for WB-CDMA-FDD	p. 78
CAS for WB-TD/CDMA-TDD	p. 79
Evaluation Environment	p. 82
Microcellular Layout	p. 82
User Mobility	p. 82
Propagation Model for the Microcellular Layer	p. 83
Teletraffic Model	p. 85
Types of Service	p. 86
CIR Threshold	p. 87
Additional Information on the Simulation of the WB-CDMA System	p. 88
Additional Information on the Simulation of the WB-TD/CDMA-TDD System	p. 89
Discussion of Results	p. 89
Blocking and Forced Termination Probabilities for WB-TD/CDMA-TDD	p. 90
Capacity Assessment	p. 96
Summary	p. 98
Spectrum Partitioning in a Microcell/Macrocell Cellular Layout with Overflow	p. 101
Introduction	p. 101
The HCS Scenario	p. 102
Mathematical Approach Used	p. 104
Teletraffic Analysis of the Microcell Level	p. 107
Modeling the Overflow Traffic	p. 111
Teletraffic Analysis of the Macrocell Level	p. 111
Example and Discussions	p. 114
Optimum Spectrum Partitioning Using NPS	p. 115
Optimum Spectrum Partitioning Using RCS	p. 116
RCS and NPS--Optimum Spectrum Partitioning	p. 117
Summary	p. 119
Channel Assignment in Cellular Systems with HCSs	p. 121
DCA in HCS	p. 122
System Description--Two-Layer HCS with Slow and Fast Users	p. 124
Carrier Allocation Strategies	p. 126
FCAR	p. 126
Hierarchical Dynamic Carrier Allocation	p. 127
Hierarchical DCA Applied at Time Slot Level--HDCA-II	p. 128
Network Scenario Used in Simulations	p. 132
Examples and Discussion	p. 132
Uniform Traffic	p. 133
Nonuniform Traffic	p. 139
Notes on the Assumptions Made in This Chapter	p. 144
On Irregular HCS Scenarios	p. 144
On the Reuse Pattern	p. 145
Summary	p. 146
A Distributed Dynamic Resource Allocation Strategy for a Hybrid TD/CDMA System	p. 149
Scope of the Chapter	p. 150
System Description	p. 151
Resources	p. 152
Description of the HCS Environment	p. 152
Frames Proposal Mode 1	p. 153
Description of Strategies Considered	p. 154
FRA	p. 154
FRA with Hand-Down Procedure and Resource Reassignments	p. 154
DDRA	p. 155
Evaluation Environment	p. 156
Propagation Model for the Microcellular Layer	p. 159
Propagation Model for the Macrocellular Layer	p. 159
CIR Threshold	p. 159
Teletraffic Model	p. 160
Mathematical Approach to Analyze the HCS	p. 161
Microcell Layer	p. 163
Overflow Traffic and Macrocell Layer	p. 166
Examples And Discussion	p. 166
Summary	p. 175
Overall Summary and Directions for Future Work	p. 179
Further Research Required	p. 180
Packet-Switched Services	p. 180
Keeping Up to Date with the Modifications to UTRA-TDD	p. 180
Resource Allocation in WB-CDMA/TDD	p. 180
Study of HCS with Different MAS in Each Layer	p. 181
Expanding the Teletraffic Analysis Presented	p. 181
Power Control	p. 181
More Complex and Real Simulation Environments	p. 182
Derivation of the State Equations for Overflow Traffic and Macrocell Layer	p. 183
Overflow Traffic Distribution	p. 183
Overflow Traffic	p. 186
Macrocell Layer	p. 187
List of Acronyms	p. 191
List of Symbols	p. 197
About the Authors	p. 201
Index	p. 203
Table of Contents provided by Syndetics. All Rights Reserved.

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Resource Allocation in Hierarchical Cellular Systems

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