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Ufa : an ultra flat architecture for future mobile networks

Abstract : Mobile networks have a layered model, with: (1) an IP access network providing IP connectivity to users, (2) a service control layer, IMS, (3) an interaction layer for policy control, PCC. This model, centralized and hierarchical, will cause scalability and QoS problems in case of data volume explosion. In this thesis, a new model for future mobile networks is proposed: Ultra Flat Architecture (UFA). UFA uses IMS to control all application types. UFA is flat since it reduces the number of network node types to 2 mainly: (1) a UFA Gateway that includes the functions of the IP access network, the IMS and the PCC, and (2) a terminal. After designing the architecture, we specified and evaluated three main procedures for UFA: registration / authentication, service establishment and mobility. We have optimized the first two procedures compared to standard procedures of the IMS. For example, the service establishment procedure has a reduced delay and allows the configuration of the service or the transport layer according to the resources available in the network. We have developed a mobility procedure for UFA. It is based on the transfer, from one UFA Gateway to another, of the all OSI-layers contexts related to that terminal, and on a proactive determination of the all OSI-layers parameters, necessary for the terminal attachment to the new UFA Gateway. All obtained results show the great interest of UFA and of flat architectures more generally.
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Submitted on : Wednesday, February 1, 2012 - 2:13:29 PM
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  • HAL Id : tel-00665221, version 1


Khadija Daoud Triki. Ufa : an ultra flat architecture for future mobile networks. Other [cs.OH]. Institut National des Télécommunications, 2011. English. ⟨NNT : 2011TELE0007⟩. ⟨tel-00665221⟩



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