User's Manual

CHAPTER 1. Overview of Mobile WiMAX System

1-4

1.3 Mobile WiMAX Network Configuration

Mobile WiMAX network is composed of ASN and CSN. ACR and RAS are involved in

ASN and WSM is the Network Element (NE) to manage ACR and RAS. CSN is composed

of AAA server, HA and PCRF server. ASN is connected with CSN by router and switch.

The following diagram shows the composition of Mobile WiMAX network.

Figure 1.1 Mobile WiMAX Network Configuration

Radio Access Station (RAS)5

RAS as the system between ACR and MS has the interface with ACR and provides the

wireless connection to MS under IEEE 802.16 standards to support wireless

communication service for subscribers.

RAS carries out wireless signal exchange with MS, modulation/demodulation signal

processing for packet traffic signal, efficient use of wireless resources, packet scheduling

for Quality of Service (QoS) assurance, assignment of wireless bandwidth, Automatic

Repeat request (ARQ) processing and ranging function. In addition, RAS controls the

connection for packet calls and handover.

RAS

WSM

ACR

MS MS MS

e Router/Switch

PCRF

Core Router/Switch

CSN

Internet

…

DHCP