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Chapter 1 - System Description
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 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
BreezeMAX Extreme
7
WiMAX Network Architecture
System Manual
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