7 Glossary

ACL: Asynchronous Connection Oriented . Asynchronous packets transmitted in non-connected mode in Bluetooth systems (support).
AP: Access Point . Wireless access point, implements generally a bridge function between a WLAN radio cell and a classic wired local network.
ARQ: Automatic Repeat Request . Retransmission schemes for loss protocol units.
ATM: Asynchronous Transfer Mode .
BRAN: Broadband Radio Access Networks . ETSI group specify broadband radio systems.
BSS: Basic Service Set . Radio cell in the EEE802.11 standard.
CSMA/CA: Carrier Sense Multiple Access/Collision Avoidance . Channel access method based on a listen before talk mechanism as well as a collision avoidance method. Used in IEEE 802.11 WLAN.
CSMA/CD: Carrier Sense Multiple Access/Collision Detection . Channel access method based on a listen before talk mechanism with a collision resolution method. Used in Ethernet Local Area Networks.
CTS: Clear To Send . Short signalling scheme sent in answer to the reception of a RTS frame in a IEEE 802.11 system.
DCC: DLC Connexion Control. Connection control function in the DLC layer of an Hiperlan/2 system.
DCF: Distribution Coordination Function . IEEE 802.11 transmission mode permitting that each station gets the same probability in medium access.
DECT: Digital European Cordless Telecommunications .
DIFS: Data Interframe Space . Minimum time interval between the emission of 2 data frames in a IEEE 802.11 system.
DLC: Data Link Control . Couche de contr le de lien.
Domestic network: communication network used at the scale of an home.
EIRP: Effective Isotropic Radiated Power .
Ethernet: communication protocol used in Local Area Networks.
ETSI: European Telecommunication Standard Institute .
Hiperlan: HIgh PERformance Radio Local Area Network . European WLAN standards specified by ETSI.
IEEE: Institute of Electrical and Electronics Engineers.
IEEE 802.11: IEEE WLAN standardisation group.
ISM: Industrial, Scientific and Medical .
LAN: Local Area Network .
MAC: Medium Access Control .
OFDM: Orthogonal Frequency Division Multiplex . Multi-carrier modulation technique.
OSI: Open Systems Interconnection .
OSI layer: layer defined in the ISO model.
PCF: Point Coordination Function . WLAN IEEE 802.11 transmission mode where an access point controls the communication media sharing.
PIFS: Polling Interframe Space . Time interval specified in IEEE 802.11 system between the transmission of a frame and the radio media preemption by an access point working in PCF mode.
RLAN: Radio Local Area Network . Other denomination for WLAN.
RLC: Radio Link Control . Radio control function.
RRC: Radio Ressource Control . Radio resources control functions in Hiperlan2 systems.
RTS: Ready To Send . Short signaling frame that can be sent before the transmission of a dataframe in IEEE 802.11 systems in order to ensure from radio connectivity.
SCO: Synchronous Connection Oriented . Synchronous packets transmission in Bluetooth systems (support of voice).
SIFS: Short Interframe Space . Time interval specified in IEEE 802.11 system between the transmission of a data frame and the corresponding acknowledgement .
TDD: Time Division Duplex .
TDMA: Time Division Multiple Access .
UMTS: Universal Mobile Telecommunication System . 3rd generation cellular networks.
WEP: Wired Equivalent Privacy . IEEE 802.11 security functions.
WLAN: Wireless Local Area Network .
WPAN: Wireless Personal Area Network .