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Distributed Mobility Management Scheme in LTE/SAE Networks
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 Title & Authors
Distributed Mobility Management Scheme in LTE/SAE Networks
Kim, Yong-Hwan; Han, Youn-Hee; Kim, Min; Park, Seok Yong; Moon, Sang Jun; Lee, Jin Ho; Choi, Dae Kyu;
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Recently, due to a explosive growth in the mobile Internet traffic, the problem of excessive data traffic handling on core network and thus scalability problem have been magnified in 3GPP LTE/SAE networks. Current LTE/SAE network based on the central P-GW (PDN Gateway) used as mobility anchor cannot deal with such demand for exponentially increasing mobile Internet traffic. In this paper, we propose a new LTE/SAE network architecture supporting distributed P-GWs and corresponding distributed mobility management to solve these problems. For this, in addition to the deployment of such distributed P-GWs, we propose a dynamic and distributed mobility management by distributing MMEs (Mobility Management Entities) which dynamically manages the location information of a UE's PDN connection, and also propose a handover procedure of such PDN connections by using the proposed distributed P-GWs and MMEs. The performance of the proposed dynamic and distributed LTE/SAE network system is compared with the current LTE/SAE network system in terms of handover latency and network throughput.
3GPP;LTE/SAE;P-GW;Distributed Mobility Management;Traffic Offload;
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