8 APPENDIXES
(3) Wireless Ethernet
A wireless LAN uses radio waves or infrared rays as the transmission medium. It is used, for
instance, to connect a mobile device to a LAN. Wireless LAN is being standardized by the
IEEE Wireless LAN Working Group (IEEE 802.11). For the interconnection between a
wireless LAN and an Ethernet network, the use of a bridge is required because they differ in
MAC layer protocol.
Figure 8-6 shows a typical wireless Ethernet configuration.
10BASE5 system
2.4 GHz
Wireless adapter
Wireless bridge
Figure 8-6 Wireless Ethernet Configuration Example
8-6