Abstract
In order to provide seamless communications under the mobility and diversity of users, multiprotocol must be supported at access of wireless ATM. We outline the technological rationale for multiprotocol over wireless ATM, present a system-level reference architecture of multiprotocol access system, discuss key subsystem design issues. The reference architecture for wireless consists of two major components: (a) a radio access layer for extension of services over a wireless medium and (b) a ATM infrastructure network capable of supporting terminal migration. Design considerations for both the access (e.g. physical layer, medium access control and data link control) and mobile (e.g. handoff control, location management and routing/QoS control) are discussed briefly, and key technical issues are identified in each case. A new access means, multiprotocol access over wireless using software technologies, is given, which can support PDA, PIA, mobile PC, WLAN (IEEE 802.11) access, and so on.
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