chapter0 2 introduction
TRANSCRIPT
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Overview of IEEE Wireless
Network Standards
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Convergent Wireless Network
Standards IEEE 802 Series
Wireless Personal Area Network (WPAN) 802.15 (since 1999)
Wireless Local Area Netwrok (WLAN) IEEE 802.11 (since 1990)
Wireless Metropolitan Network (WMAN) IEEE 802.16 (since 2001)
Wireless Wide Area Network (WWAN) IEEE 802.20 (since 2002)
Wireless Regional Area Network (WRAN) IEEE 802.22 (since 2004)
Media Independent Handover Services IEEE 802.21
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Relationship
PAN
< 10 m
802.15.1 (Bluetooth)1 Mbps
802.15.3 > 20 Mbps
802.15.3a (UWB) < 480 Mbps
802.15.4 (Zigbee) < 250 kbps
LAN
< 150 m
802.11a/b/e/g 1- 54Mbps802.11n (proposed) > 100 Mbps
MAN
< 5 km
802.16-2004 - 70 Mbps
802.16e-2005 35Mbps
WAN
< 15 km
802.20 (proposed)
GSM, GPRS, CDMA, 2.5G, 3G
10 kbps to 2.4 Mbps
RAN< 100 km
802.22 (proposed) - 18 to 24 Mbps
HandoverService
802.21
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802.1
802.2
802.3
802.4
802.5
802.6
8
02.1
1802.1
5
8
02.1
6
8
02.1
7
TG1
TG2
TG3
TG5
TG4 PHY PHY
DataLinkLayer
MAC
LLC
LR-WPAN
IEEE Project 802 Standard
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Wireless Markets
S
HORT
LONG
LOW < DATA RATE > HIGH
PAN
LAN
TEXT GRAPHICS INTERNET HI-FIAUDIO
STREAMINGVIDEO
DIGITALVIDEO
MULTI-CHANNELVIDEO
Bluetooth1
Bluetooth 2
ZigBee
802.11b
802.11a/HL2 & 802.11g
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IEEE 802.15 Working Group
IEEE 802 LAN/MAN Standards Committee
802.1
Higher LayerLAN Protocols
Working Group
...802.11
Wireless LocalArea Networks
Working Group
...802.15
Wireless PersonalArea NetworksWorking Group
802.16
Broadband WirelessMAN
Working Group
802.17
ResilientPacket Ring
Working Group
TG1
WPAN/Bluetooth
Task Group
TG2
Coexistence
Task Group
TG3
WPAN High Rate
Task Group
TG4WPAN Low Rate
Task Group
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WPAN IEEE 802.15 (I)
IEEE 802.15.1 Original specBluetooth
Working range: < 10m
RF Band: 2.4GHz ISM
Modulation: Frequency Hopping(79 channels)
Bit Rate: up to 720 kbps
Network structure: piconet up to 8 devices
scatternet combination of piconet
Provide voice channel
Application: Devicecommunications
Status Standard (2002) (2005)
M
SS
S
SB
P
P
M=Master
S=Slave
P=Parked
SB=Standby
M
M
SS
S
S
P
SB
SB
P
P
M
M
SS
S
S
P
SB
SB
P
P
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WPAN IEEE 802.15 (II)
IEEE 802.15.2 Coexistence Coexistence with 802.11
Status Standard (2003)
IEEE 802.15.3/3bHigh-Rate WPAN
RF Band: 2.4 GHz ISM Bit Rate: > 20 Mbps
Network Structure CSMA/CA + TDMA
piconet + p2p communication link QoS
Applications:Short-range multimedia streaming
Status Standard (2005)
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WPAN IEEE 802.15 (III)
IEEE 802.15.4/4a (Zigbee) Low-Rate WPAN RF Band: 868 MHz, 915 MHz, 2.4GHz
Modulation: BPSK + spreading codes
Bit rate: < 250 kbps
Low power consumption Application: Industrial/Medical sensor network
Network Structure CSMA/CA
Star / peer-peer / combination
Status: 802.15.4 Standard (2003) (2006)
802.15.4a Standard (2007)
802.15.4c/4d PHY for China/Japan pre-draft
802.15.4e enhancement - predraft
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Why is ZigBee Needed?
Unique needs ofsensors and control
systems Dont need high bandwidth
Low cost
Low latency
Very low energy consumption for long battery lives
Large number of devices
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WPAN IEEE 802.15 (IV)
IEEE 802.15.5 WPAN Mesh
Facilitating wireless mesh topologies
High-Rate MAC & Low-Rate MAC
enhancement
Status pre-draft
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WPAN Spec
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WLAN IEEE 802.11 (WiFi)
Network Structure
Independent BSS
Access Point
Infrastructure BSS
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WLAN IEEE 802.11 (PHY)
IEEE 802.11 General MAC CSMA/CA
Modulation: FHSS, DSSS, IRPHY
Bit rate: up to 2Mbps
Status: Standard (1999)
IEEE 802.11a RF Band: 5 GHz UNII
Modulation: OFDM
Bit Rate: up to 54 Mbps
Status: Standard (1999)
IEEE 802.11b RF Band: 2.4GHz ISM
Modulation: CCK
Bit Rate: up to 11 Mbps
Status: Standard (1999)
IEEE 802.11g
Integrate 11a & 11b at 2.4 GHz Status: Standard
IEEE 802.11n RF Band: 2.4 GHz ISM
Modulation: OFDM + MIMO
Bit Rate: > 100 Mbps
Status: draft
IEEE 802.11j Japanese PHY
Status: Standard (2004)
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WLAN IEEE 802.11 (MAC)
IEEE 802.11e QoS Enhancement on
MAC
Status Standard (2005)
IEEE 802.11f Inter-Access Point Protocol
(IAPP)
Status Standard (2003)Withdrawn (2006)
IEEE 802.11i Security Enhancement on
MAC
Status: Standard (2004)
Draft or pre-draft:
11k Radio ResourceMeasurement
11p Wireless Access inVehicular Environments
(WAVE) 11r Fast Roaming
11s WLAN Mesh
11u Interworking withExternal Networks
11v Network Management 11w protected management
frame
11z Direct Link Setup
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IEEE 802.11 PHY Layer
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WMAN IEEE 802.16 (WiMAX)
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Potential Usage of WiMax
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WMAN IEEE 802.16 Spec IEEE 802.16-2004 Fixed
WMAN Range:
Line of Sight: about 50 km
Non Line of Sight: about 8 km
Bit Rate:
Line of Sight: 16 ~ 134 Mbps Non Line of Sight: up to ~70
Mbps
RF Band: Line of Sight : 11~66 GHz
Non Line of Sight: 2~11GHz
Modulation: SC, OFDM, MIMO MAC: PMP, Mesh (optional)
Duplexing: TDD/FDD
QoS
IEEE 802.16e-2005Mobile WMAN Support mobility
Bit rate: up to 60 Mbps
RF Band: < 11 GHz
IEEE 802.16.2-2004 Coexistence
IEEE 802.16f-2005 Management Information
BASE (MIB)
IEEE 802.16k-2007 Bridging of IEEE 802.16
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WMAN IEEE 802.16 Spec
(cont.)
Draft or Pre-draft:
IEEE 802.16h
Improved Coexistence Mechanisms for
License-Exempt Operation
IEEE 802.16i
Management Plane Procedures and Services
IEEE 802.16j
Multihop Relay Specification
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WWAN IEEE 802.20
Mobile Broadband Wireless Access (MBWA) Mission Develop the specification for an efficient packet based
air interface that is optimized for the transport of IPbased services
Scope: MAC & PHY of MBWA
RF Band: < 3.5 GHz
Modulation: OFDM
Bit rate: > 1 Mbps per user Mobility: up to 250 km/h
A direct competitor to 3G
Status: draft
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WRAN IEEE 802.22 Cognitive-Radio Based PHY/MAC
enable flexible, efficient and reliable spectrum use by adapting theradios operating characteristics to the real-time conditions of theenvironment
RF Band: TV Bands (54 ~ 682 MHz) w/ bandwidth 6/7/8 MHz
MAC: PMP (point-to-multipoint) Bit Rate:
18 ~ 24 Mbps per channel
1.5 Mbps upstream, 300 kbps downstream
Service Range: 33 km for 4W CPE transmit power up to 100 km
Propagation delays exceed 300 s
Status: draft (802.22.1 draft 2.0)
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MIH IEEE 802.21
Media Independent Handover (MIH)
Mission
Enable handover and interoperability between
heterogeneous network types including both 802 andnon 802 networks.
Focus on Heterogeneous(Vertical) Handovers
Homogeneous (Horizontal) Handovers
Within Single Network (Localized Mobility) 802.11r, 802.16e, 3GPP, 3GPP2
Services: (next page)
Status: draft (D7.1)
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Handover Standards
IEEE
802.11r
802.16e
3GPP/2
VCC I-WLANSAE-LTE
Horizontal
Handovers
IP Mobility &Handover Signaling
Inter-working &Handover Signaling
IEEE
802.21
802.21 Provides 802 component to other Handover Standards
IETF
MIP
FMIPSIP
HIPNETLMM
DNAMIPSHOP
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802.21: Key Services
Link Layer TriggersState Change
PredictiveNetwork Initiated
Network Information
Available NetworksNeighbor MapsNetwork ServicesHandover Commands
Client InitiatedNetwork Initiated
Vertical Handovers
802.21 uses multiple services to Optimize
Vertical Handovers
802.21 MIH Function
Protocol and Device Hardware
Applications (VoIP/RTP)
ConnectionManagement
WLAN Cellular WMAN
L2 Triggersand Events
InformationService
Mobility Management Protocols
SmartTriggers
InformationService
HandoverMessages
Handover Management
HandoverPolicy
HandoverMessages I
EEE
802.21
IETF