Distributed Network Architecture Alvarion’s Fractalized ASN Approach: A Practical Implementation of Distributed Network Architecture

One of the key questions operators must address prior to setting up a Mobile WiMAXTM network is whether to deploy a centralized or distributed network architecture. While a centralized topology is far more prevalent than its counterpart, the distributed approach is an up-and-coming alternative deserving serious consideration. As a world leader in WiMAXTM, Alvarion works closely with operators to help them fully understand their network topology and determine the architecture most suitable to their needs. The centralized approach maintains advantages under certain deployment scenarios, however, the distributed approach has often been found to be a viable and effective alternative. In this paper, we present the advantages of the distributed approach; while these advantages lead to clear business and performance benefits, we also present Alvarion’s unique practical, fractalized approach for implementing a distributed architecture so that operators can fully maximize their Mobile WiMAX investment. Critical Issues for a Mobile WiMAX Deployment Mobile WiMAX networks are becoming an increasingly attractive option for operators worldwide. Having made the decision to deploy a Mobile WiMAX system, operators need to consider several factors in order to maximize their return on investment (ROI). These factors include: Capital expenditures: in today’s challenging economic climate, operators are more reluctant than ever to • make expensive initial equipment outlays, and are looking for a system with a low entry point. Pay-as-you-grow model: as more subscribers are being continuously added to the network, operators must • be able to invest in their deployment on a gradual basis. Scalability: operators need a system that easily and gradually scales up from a small to mass deployment, as • business expansion is anticipated over time. Service availability: operators require a high performance, reliable system with no single point of failure to • ensure end-to-end operational continuity. Transport network optimization: by freeing up the location of transport nodes for carrying various traffic • types, operators can optimize their transport network and backhauling capabilities. Mobile WiMAX Architecture Two common access service network (ASN) backhauling topologies – centralized and distributed – are currently available to operators looking to deploy a Mobile WiMAX network. While centralized architecture has been the more popular approach until now, operators need to compare the models in order to determine which one of the two increases the likelihood of maximizing their investment.