802.11b <networking> An {IEEE} {wireless} {local area networks} (WLAN) {standard} {protocol} which speaks {DSSS} at 2.4GHz. 802.11b is one of the two {wi-fi} protocols. It operates at 11 megabits per second (Mbps) compared with {802.11g} which operates at 54 Mbps. (2004-01-11)