What is Functions of the ASN in Wimax ?

ASN - Access Service Network.

• Establish layer 2 connections between the BS and the MS. 
• Transmit AAA messages to the home NSP of the MS. 
• Assist the high level to establish layer 3 connections with the MS and assign
  the IP addresses. 
• Perform the radio resource management (RRM). 
• Perform the intra-ASN mobility management and handover. 
• Perform the intra-ASN paging and location management. 
• Establish and manage the tunnels between the ASN and the CSN. 
• Store the list of temporary subscriber information, which is similar to the function of VLR in a 3G network.