Cisco ASR 5000 series Product Overview page 221

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Table of Contents

ASN Paging Controller and Location Registry Overview

ASN Paging Controller and Location Registry in WiMAX Networks

Paging Group A

Paging Group B

In WiMAX networks, a mobile station is tracked when it is in idle mode. The information is stored to a location register

(LR). The tracking area is larger than the cell size because a paging group (PG) comprises multiple cells. When a

mobile station moves across paging groups, its location is updated via R6 and/or R4. The paging controller (PG) in

ASN-GW retrieves the location from the LR and alerts the paging agent in (PA) in the base station to signal to the

mobile station.

Location information for idle mode subscribers is maintained in a location register central database that is co-located on

an anchor paging controller. Idle mode can be initiated by the mobile device or the network. The paging controller

retains subscriber session context information in addition to supervising paging activities. It also represents an

authentication liaison between the user device and the AAA server. As the subscriber roams across cell sites, it is

associated with a group of base stations known as a paging group. Location updates to the LR database are conveyed

over R6 and R4 messages between the relay paging controller serving ASN and the A-PC/LR. When a remote host

Paging Group C

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