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Understanding WiMAX Network Architecture and Interfaces

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network architecture
base station
access service network
connectivity service network

This page describes the WiMAX network architecture and its key elements. The WiMAX architecture diagram illustrates the interfaces between these elements. A WiMAX system typically consists of a Subscriber Station (SS) or Mobile Station (MS), a Base Station (BS), an ASN (Access Service Network) gateway, and a CSN (Connectivity Service Network) router, among other components. It defines various interfaces, such as Air, R3, R4, R5, R6, and R8, between these network entities.

wimax network architecture diagram

Figure-1: WiMAX Architecture Diagram

As shown in the diagram, a Subscriber Station (SS) or Mobile Station (MS) seeking to join a WiMAX network first connects with a Base Station (BS). The BS is already interfaced with an ASN gateway/CSN router to provide internet service.

The CSN router is connected to an Application Service Provider, which includes an AAA (Authentication, Authorization, and Accounting) server, a DHCP server, a Home Agent (HA), a DNS server, PSTN (Public Switched Telephone Network), and other networks (such as 3GPP).

ASN stands for Access Service Network, and CSN stands for Connectivity Service Network.

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