Wireless Mesh Networks

by Held; Gilbert

• ISBN13: 9780849329609
• ISBN10: 0849329604
• Format: Hardcover
• Copyright: 2005-06-23
• Publisher: Auerbach Public

Summary

Wireless mesh networking is a new technology that has the potential to revolutionize how we access the Internet and communicate with co-workers and friends. Wireless Mesh Networks examines the concept and explores its advantages over existing technologies. This book explores existing and future applications, and examines how some of the networking protocols operate.The text offers a detailed analysis of the significant problems affecting wireless mesh networking, including network scale issues, security, and radio frequency interference, and suggests actual and potential solutions for each problem.Although the book's primary focus is the potential use of wireless mesh networks in the commercial marketplace, it enables readers to gain an appreciation for use of the technology in the office, at government agencies, on campus, and in the home.

Table of Contents

Preface	p. xiii
Acknowledgments	p. xv
Introduction to Wireless Mesh Networking	p. 1
Mesh Networking Defined	p. 2
Nodes and Links	p. 2
Control Issues	p. 3
Modern Mesh Networking	p. 4
Wireless Networking Structures	p. 4
Overcoming Transmission Distance Limitations	p. 4
Network Evolution	p. 6
Network Topologies	p. 6
Point-to-Point	p. 6
Multipoint	p. 6
Types of Networking Addressing	p. 8
Unicast Addressing	p. 8
Broadcast Addressing	p. 8
Types of Broadcast Addresses	p. 9
Multicast Addressing	p. 10
Bridging and Routing	p. 10
Wireless LAN Topology	p. 11
Service Sets	p. 12
Basic Service Set	p. 12
Distribution System	p. 12
Mesh Network Evolution	p. 12
Routing Algorithms	p. 14
Dynamic Source Routing	p. 14
On-Demand Distant Vector	p. 15
Ad Hoc Mesh Networks	p. 15
Advantages of Use	p. 16
Reliability	p. 16
Self-Configuration	p. 17
Self-Healing	p. 17
Scalability	p. 17
Economics	p. 17
Disadvantages of Use	p. 18
Lack of Standards	p. 18
Security	p. 18
Overhead	p. 19
Applications	p. 19
Radio Frequency Utilization	p. 21
Frequency, Period, and Bandwidth	p. 21
Frequency	p. 22
Period	p. 22
Bandwidth	p. 23
Frequency Bands	p. 23
IEEE Standards	p. 24
The 802.11 Standard	p. 25
FHSS	p. 26
DSSS	p. 26
Utilization	p. 26
The WiMax Standard	p. 27
The ZigBee Standard	p. 28
Power Measurements	p. 29
The Bel	p. 30
Log Relationships	p. 30
The Decibel	p. 31
Decibel above 1 mW	p. 32
The Decibel Isotropic	p. 34
Antenna Systems	p. 35
Antenna Categories	p. 36
Polarization	p. 36
Directionality and EIRP	p. 38
Types of Antennae	p. 38
Whip Antenna	p. 39
Dipole Antenna	p. 39
Yagi Antenna	p. 39
Considering Power Limits	p. 39
Antenna Selection	p. 39
Receiver Sensitivity	p. 41
Mesh Network Components	p. 43
Understanding Mesh Network Components	p. 43
Wireless LAN Cards	p. 44
MeshNetworks 6300 Wireless Modem Card	p. 44
Client Software	p. 46
Wireless Mesh Router	p. 47
MeshNetworks Wireless Router	p. 47
Nova Engineering NovaRoam 900 Router	p. 48
Overview	p. 49
Operation	p. 49
Route Table Utilization	p. 50
Applications	p. 51
Access Point	p. 53
Operation	p. 53
Types of Access Points	p. 53
MeshNetworks IAP 6300	p. 54
Switching Controller	p. 55
MeshNetworks MiSC	p. 55
Integrating Components	p. 56
Routing Protocols	p. 59
MANET	p. 59
Characteristics	p. 60
Dynamic Topologies	p. 60
Bandwidth Constraint	p. 60
Energy Constrained Operation	p. 61
Limited Security	p. 61
Scalability	p. 62
IEFT MANET Goals	p. 62
Near-Term Goals	p. 62
Long-Term Goals	p. 62
MANET Protocols	p. 63
Types of Protocols	p. 63
The AODV Routing Protocol	p. 64
Need for a Routing Protocol	p. 64
Route Request Message	p. 65
Route Reply Message	p. 66
RREQ-RREP Message Flow	p. 67
Route Deletion	p. 69
HELLO Message	p. 69
Route Error Message	p. 70
Gray Area Considerations	p. 71
TBRPF	p. 73
Overview	p. 73
Routing Modules	p. 73
Neighbor Discovery Module	p. 73
Routing Module	p. 74
The Reported Subtree	p. 75
TBRPF Packets	p. 75
Packet Body	p. 77
Messages	p. 77
Neighbor Table	p. 78
Status Values	p. 78
Transmitting HELLO Messages	p. 79
Processing HELLO Messages	p. 80
Protocol Comparison	p. 81
Traffic Support	p. 81
Network Operation	p. 83
Working with Firetide Equipment	p. 84
Router Operation	p. 84
Routing Protocol Support	p. 85
Hardware Features	p. 85
Network Utilization	p. 85
Security	p. 86
Modes of Operation	p. 87
Outdoor Utilization	p. 88
LocustWorld Mesh AP and Meshbox Networking	p. 89
MeshAP	p. 89
Software Design	p. 89
Limitations	p. 90
Software Operation	p. 91
Security	p. 91
Software Availability	p. 91
MeshBox	p. 92
Applications	p. 92
WISP	p. 93
Community Networking	p. 94
Contract Constraints	p. 94
Security	p. 95
Economics	p. 96
Packet Hop Networking	p. 98
Network Components	p. 99
Network Controller	p. 99
Network Management System	p. 99
Network Clients	p. 99
Multi-Terrain Support	p. 99
Network Applications	p. 100
Nortel Networks Wireless Mesh Networking	p. 100
IEEE 802.11b/g Products	p. 101
7220 Access Point	p. 101
7250 Wireless Gateway	p. 101
Optivity NMS	p. 102
The OPTera Metro 2400	p. 103
Creating a HotPoint-Based Mesh Network	p. 105
The Networking Environment	p. 105
Home Networking Environment	p. 106
Network Access	p. 107
Creating a HotPoint Mesh Network	p. 108
Hotpoint Router Local Connectivity	p. 108
Port Connection Considerations	p. 108
Using HotPoint Manager	p. 109
Inventory View	p. 109
Mesh View	p. 112
Setup Tab	p. 112
Security Tab	p. 112
Wireless Tab	p. 115
Update Tab	p. 115
Monitor Tab	p. 115
Creating the Indoor Mesh Network	p. 117
Considering a Community Network	p. 119
Observing Intramesh Communications	p. 121
AiroPeek Operation	p. 121
Examining Captured Packets	p. 123
Packet Decoding	p. 124
The Beacon Frame	p. 125
Wireless Frame Format	p. 126
Data Frame Decode	p. 128
IP Header	p. 128
UDP Header	p. 129
Wireless Mesh Standards	p. 131
Evolution	p. 132
Transmission Platform	p. 132
Routing Protocols	p. 132
Standards Responsibility	p. 133
The Proposed IEEE 802.11s Standard	p. 134
Objective	p. 134
Security	p. 135
Project Status	p. 135
The Future of Wireless Mesh Networking	p. 137
Standardization Problems	p. 138
Economics	p. 138
Market Drivers	p. 138
IEEE 802.11a, b, and g Technologies	p. 139
IEEE Standardization of Mesh Networking	p. 139
Municipal Hot Spots	p. 139
Mesh Networking Prediction	p. 140
Index	p. 141
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