An Efficient and Scalable Locator/ID SeparationScheme Based Mobility and MultihomingSupporting Architecture for 3G SAE

System architecture evolution (SAE) is oneof the key challenges for the Long term evolution (LTE) of3G research, aiming to develop a new core network forimproving the IP based packet-switched network performance.While for the current IP-based mobility managementarchitecture in 3GPP SAE, hosts are identified byIP addresses that depend on their topological location. Inother words, the IP addresses are semantically overloadedsince they identify both hosts and topological locations.In this paper, on the basis of an efficient and scalableLocator/ID separation (LIDS) scheme, a mobility and multihomingsupporting architecture for 3G SAE is designed.From the qualitative and quantitative analyses of the 3GPPSAE recommended mobility management schemes (i.e.,Mobile IPv6 and Proxy Mobile IPv6) and our architecture.We show that our LIDS based architecture providesan outstanding network-based mobility management withroute optimization support and lower signaling cost thanIP-based schemes. Furthermore, a comprehensive comparisonamong the various well-known Locator/ID separationbasedarchitectures is made.