Shadow cluster concept for resource allocation and call admission in ATM-based wireless networks

Abstract

The Shadow Cluster concept is described which is a novel idea that can be used to improve the resource allocation and the call admission procedures in wireless networks. Shadow clusters can be used to allocate resources that need to be reserved for all hand-offs, and to determine if a new call should be admitted to a wireless network based on the call's requirements and local traffic conditions. The shadow cluster concept is targeted for ATM-based wireless networks with a micro/nano-cellular architecture, where service will be provided to users with very diverse requirements. With shadow clusters, the quality of service of mobile calls can be improved by reducing the number of dropped calls during hand-offs, and by disallowing the establishment of new calls that are highly likely to later result in a dropped call.