Book contents
- Frontmatter
- Contents
- Foreword
- Preface to the first edition
- Preface to the second edition
- List of abbreviations
- Chapter 1 Introduction
- Part I Physical layer
- Part II Medium access control layer
- Chapter 8 Medium access control
- Chapter 9 MAC throughput enhancements
- Chapter 10 Advanced channel access techniques
- Chapter 11 Interoperability and coexistence
- Chapter 12 MAC frame formats
- Part III Transmit beamforming, multi-user MIMO, and fast link adaptation
- Index
- References
Chapter 12 - MAC frame formats
from Part II - Medium access control layer
Published online by Cambridge University Press: 05 June 2013
- Frontmatter
- Contents
- Foreword
- Preface to the first edition
- Preface to the second edition
- List of abbreviations
- Chapter 1 Introduction
- Part I Physical layer
- Part II Medium access control layer
- Chapter 8 Medium access control
- Chapter 9 MAC throughput enhancements
- Chapter 10 Advanced channel access techniques
- Chapter 11 Interoperability and coexistence
- Chapter 12 MAC frame formats
- Part III Transmit beamforming, multi-user MIMO, and fast link adaptation
- Index
- References
Summary
This section provides details on the MAC frame formats. The information provided here is sufficiently detailed to act as a reference for the topics discussed in this book, but it does not provide an exhaustive list of all field elements, particularly in the management frames. For a detailed treatment of the frame formats refer to the actual specification (IEEE, 2012a, 2012b).
General frame format
Each MAC frame consists of the following:
a MAC header
a variable length frame body that contains information specific to the frame type or subtype
a frame check sequence or FCS that contains a 32-bit CRC.
This frame format consists of a set of fields that occur in a fixed order as illustrated in Figure 12.1. Not all fields are present in all frame types.
Frame Control field
The Frame Control field is shown in Figure 12.2 and is composed of a number of subfields described below
Protocol Version field
This field is 2 bits in length and is set to 0. The protocol version will only be changed when a fundamental incompatibility exists between a new revision and the prior edition of the standard, which to date has not happened.
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- Next Generation Wireless LANs802.11n and 802.11ac, pp. 317 - 362Publisher: Cambridge University PressPrint publication year: 2013