IEEE 802.11 Wireless Local Area Network (WLAN) Standard

Mustafa Ergen. Ergen@eecs.berkeley.edu June 2002. Faculty of Electrical Engineering and Computer Science. University of California Berkeley ….

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IEEE 802.11 Wireless Local Area Network (WLAN) Standard, contents:

  • 1 Overview
  • 1.1 Introduction … 5
  • 1.1.1 Goals … 5
  • 1.1.2 Architecture … 6
  • 2 Medium Access Control
  • 2.1 MAC Functionality … 11
  • 2.2 MAC Frame Exchange Protocol … 11
  • 2.2.1 Dealing with Media … 12
  • 2.2.2 The Hidden Node Problem … 12
  • 2.2.3 Retry Counters … 13
  • 2.2.4 Basic Access Mechanism … 14
  • 2.2.5 Timing Intervals … 16
  • 2.2.6 DCF Operation … 17
  • 2.2.7 Centrally Controlled Access Mechanism … 17
  • 2.2.8 Frame Types … 20
  • 2.2.9 Control Frame Subtypes … 22
  • 2.2.10 Data Frame Subtypes … 24
  • 2.2.11 Management Frame Subtypes … 25
  • 2.2.12 Components of the Management Frame Body … 27
  • 2.2.13 Other MAC Operations … 30
  • 3 MAC Management
  • 3.1 Tools Available to Meet the Challenges … 36
  • 3.1.1 Authentication … 36
  • 3.1.2 Association … 37
  • 3.1.3 Address Filtering … 38
  • 3.1.4 Privacy MAC Function … 38
  • 3.1.5 Power Management … 38
  • 3.1.6 Synchronization … 40
  • 3.2 Combining Management Tools … 42
  • 3.2.1 Combine Power Saving Periods with Scanning … 42
  • 3.2.2 Preauthentication … 43
  • 4 MAC Management Information Base
  • 4.1 Station Management Attributes … 44
  • 4.2 MAC Attributes … 46
  • 5 The Physical Layer
  • 5.1 Physical Layer (PHY) Functionality … 49
  • 5.2 Direct Sequence Spread Spectrum (DSSS) PHY … 49
  • 5.2.1 DSSS PLCP Sublayer … 49
  • 5.2.2 Data Scrambling … 51
  • 5.2.3 DSSS Modulation … 51
  • 5.2.4 Barker Spreading Method … 52
  • 5.2.5 DSSS Operating Channels and Transmit Power Requirements … 52
  • 5.3 The Frequency Hopping Spread Spectrum (FHSS) PHY … 53
  • 5.3.1 FHSS PLCP Sublayer … 53
  • 5.3.2 PSDU Data Whitening … 54
  • 5.3.3 FHSS Modulation … 55
  • 5.3.4 FHSS Channel Hopping … 55
  • 5.4 Infrared (IR) PHY … 56
  • 5.4.1 IR PLCP Sublayer … 57
  • 5.4.2 IR PHY Modulation Method … 59
  • 5.5 Geographic Regulatory Bodies … 59
  • 6 Physical Layer Extensions to IEEE 802.11
  • 6.1 IEEE 802.11a – The OFDM Physical Layer … 60
  • 6.1.1 OFDM PLCP Sublayer … 60
  • 6.1.2 Data Scrambler … 61
  • 6.1.3 Convolutional Encoding … 62
  • 6.1.4 OFDM Modulation … 62
  • 6.1.5 OFDM Operating Channels and Transmit Power Requirements … 63
  • 6.1.6 Geographic Regulatory Bodies … 63
  • 6.2 IEEE 802.11b-2.4 High Rate DSSS PHY … 64
  • 6.2.1 HR/DSSS PHY PLCP Sublayer … 64
  • 6.2.2 High Rate Data Scrambling … 65
  • 6.2.3 IEEE 802.11 High Rate Operating Channels … 66
  • 6.2.4 IEEE 802.11 DSSS High Rate Modulation and Data Rates … 66
  • 6.2.5 Complementary Code Keying (CCK) Modulation … 66
  • 6.2.6 DSSS Packet Binary Convolutional Coding … 66
  • 6.2.7 Frequency Hopped Spread Spectrum (FHSS)Inter operability … 66
  • 7 System Design Considerations for IEEE 802.11 WLANs
  • 7.1 The Medium … 67
  • 7.2 Multipath … 67
  • 7.3 Multipath Channel Model … 68
  • 7.4 Path Loss in a WLAN System … 68
  • 7.5 Multipath Fading … 69
  • 7.6 Es/No vs BER Performance … 69
  • 7.7 Data Rage vs Aggregate Throughput … 69
  • 7.8 WLAN Installation and Site Survey … 70
  • 7.9 Interference in the 2.4 GHz Frequency Band … 70
  • 7.10 Antenna Diversity … 70
  • 8 IEEE 802.11 PROTOCOLS
  • 8.1 Overview of IEEE 802.11 Standards … 72
  • 8.2 IEEE 802.11E MAC PROTOCOL … 74
  • 8.2.1 Enhanced Distribution Coordination Function … 74
  • 8.2.2 Hybrid Coordination Function … 76
  • A 802.11 Frame Format
  • A.1 MAC Frame Formats … 78
  • A.1.1 General Frame Format … 78
  • A.1.2 Frame Fields … 78
  • A.2 Format of individual frame types … 79
  • A.2.1 Control frames … 79
  • A.2.2 Data Frames … 80
  • A.2.3 Management frames … 80
  • A.3 Management frame body components … 83
  • A.3.1 Fixed Fields … 83
  • A.3.2 Information Elements … 85
  • B IEEE 802.11a Physical Layer Parameters
  • B.1 Introduction … 87
  • B.2 IEEE 802.11a OFDM PHY … 87

 

Download IEEE 802.11 Wireless Local Area Network (WLAN) Standard pdf from wow.eecs.berkeley.edu, 93 pages, 568.56KB.
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