Terminology of WLan

A-MPDU                Aggregation of MAC Protocol Data Units

A-MSDU                Aggregation of MAC Service Data Units

AIFS                     Arbitration Inter Frame Space-- introduced in EDCF, a replacement for DIFS

 

CFP                      contention-free period   -- just in the PCF mode

CP                        contention period          -- just in the PCF mode

 

 

DCF                      Distributed Coordination Function (One of the MAC Access Modes)

DIFS                     DCF interframe space  -- used in DCF mode

 

EDCF                    Enhanced DCF

 

HCF                      hybrid coordination function  ( One of the MAC Access Modes)

 

NFC                      Near Field Communication

 

PCF                      Point Coordination Function (One of the MAC Access Modes)

PIFS                     PCF interframe space -- used in PCF mode

 

SIFS                     Short interframe space (for the highest-priority transmissions)

 

TXOP                    transmit opportunity

 

UP                        user priority

 

WME                    Wireless Multimedia Enhancement