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Chapter 1 - System Description
Figure 1-2: ASN Reference Model containing Multiple ASN-GWs
The various components and entities involved in the networking architecture are
described in the following sections:
1.2.2
Access Service Network (ASN)
An ASN is defined as a complete set of network functions needed to provide radio
access to a WiMAX subscriber. The ASN provides the following mandatory
functions:
WiMAX Layer-2 (L2) connectivity with WiMAX mobile station (MS)
Transfer of AAA messages to the WiMAX subscriber's home network service
provider (H-NSP) for authentication, authorization and session accounting for
subscriber sessions
Network discovery and selection of the WiMAX subscriber's preferred NSP
Relay functionality for establishing Layer-3 (L3) connectivity with a WiMAX MS
(i.e. IP address allocation)
Radio resource management
ASN-CSN tunneling
BreezeMAX Extreme
5
WiMAX Network Architecture
System Manual
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