ITWissen.info - Tech know how online

physical protocol data unit (PPDU)

The Physical Protocol Data Unit(PPDU) is the protocol data unit( PDU) of the physical layer.

InWLANs according to 802.11, the protocol header contains the effective length of the data packet. In WLAN systems with a low transmission speed of 1 Mbit/s, the PPDU length is 192 µs; in faster WLAN systems it is only half as long at 96 µs. A PPDU begins with the 12-symbol Physical Layer Convergence Protocol ( PLCP) preamble, which consists of a synchronization field (SYNC) and a start frame delimiter( SFD).

Informations:
Englisch: physical protocol data unit - PPDU
Updated at: 11.03.2012
#Words: 80
Links: PLCP protocol data unit (802.11) (PPDU), protocol, data, unit (U), power distribution unit (PDU)
Translations: DE
Sharing:    

All rights reserved DATACOM Buchverlag GmbH © 2024