Published Paper Details:

Wimax was aimed to provide high bit rate, high rapidity, large coverage area, quality of service (QOS), multimedia services and to assist all sort of real time applications. In order to maintain the good quality of service and good network performance the load on Access Service Network Gateway (ASN GW) has to be reduced. In order to reduce load on ASN gateway the relocation has to be accomplished. ASN Gateway relocation is the procedure in which the connection point of one mobile station is changed from one gateway to another gateway. Wimax Forum has introduced two mobility management schemes for this relocation purpose. These mobility management schemes reduce the packet loss and handover delay to minimum. But the mobility management techniques do not answer when to relocate the Access Service Network Gateway. Two gateway relocation algorithms were introduced to upgrade the overall working in terms of dropping probability, blocking probability, average signalling overhead; it also reduces the load of ASN gateways. In this paper we will review the gateway relocation mechanism for WiMax Network.