User's Manual

Chapter 1 - System Description WiMAX Network Architecture
BreezeMAX Extreme 5 System Manual
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
Figure 1-2: ASN Reference Model containing Multiple ASN-GWs