User's Manual

Chapter 1 - System Description WiMAX Network Architecture
BreezeMAX Extreme 7 System Manual
NSP establishes contractual agreements with one or more NAPs. An NSP may also
establish roaming agreements with other NSPs and contractual agreements with
third-party application providers (e.g. ASP, ISP) for the delivery of WiMAX services
to subscribers. From a WiMAX subscriber standpoint, an NSP may be classified as
a home or visited NSP.
1.2.6 Base Station (BS)
The WiMAX BS is an entity that implements the WiMAX MAC and PHY in
compliance with the IEEE 802.16e standard. A BS operates on one frequency
assignment, and incorporates scheduler functions for uplink and downlink
resources.
The basic functionality of the BS includes:
 IEEE 802.16e OFDMA PHY/MAC entity
 R6 and optionally, if applicable, R8 functionality according to NWG definitions
 Extensible Authentication Protocol (EAP) relay
 Control message authentication
 User traffic authentication and encryption
 Handover management
 QoS service flow management entity
1.2.7 ASN Gateway (ASN-GW)
The ASN-GW is a network entity that acts as a gateway between the ASN and
CSN. The ASN functions hosted in an ASN-GW may be viewed as consisting of two
groups - the decision point (DP) and enforcement point (EP). The EP provides
bearer plane functions, and the DP provides non-bearer plane functions.
The basic DP functionality of the ASN-GW includes:
 Implementation of EAP Authenticator and AAA client
 Termination of RADIUS protocol against the selected CSN AAA server (home or
visited AAA server) for MS authentication and per-MS policy profile retrieval
 Storage of the MS policy profile