An ATM-Based Indoor Millimeter-Wave Wireless LAN for Multimedia Transmissions∗

Developments in new frequency bands for wireless communications make a broadband channel for new services possible. Great effort has been made researching and developing broadband wireless communication in the 60-GHz millimeterwave band since the early 1990s. In this paper, we design an ATM (asynchronous transfer mode)-based indoor millimeterwave wireless local area network (WLAN) that supports multimedia transmissions and focus on the wireless access topic for implementation of wireless ATM. We propose an integrated multimedia transmission protocol, based on the MAC (medium access control) protocol, called RS-ISMA (reservation-based slotted idle signal multiple access). It supports CBR (constant bit rate), VBR (variable bit rate), ABR (available bit rate) and UBR (unspecified bit rate) transmissions and provides QoS (quality of service)-dependent adaptive retransmissions. An RS-ISMAbased prototype full-duplex indoor high-speed WLAN in the 60GHz band was developed. key words: high-speed wireless LAN, 60-GHz millimeter-wave