NC-CELL: Network Coding-based Content Distribution in Cellular Networks for Cloud Applications

Transcription

1 -CELL: Network Coding-based Content Distribution Introduction Results Mobile cloud applications is one of the fastest growing markets: Mobile data traffic will rise up to 15 EB per month by 218 By billion people will use mobile cloud applications $ 45 billion market 9% of all mobile data traffic by 218 1% 5% 18 % 17 % 15 % 14 % 12 % 1 % 82 % 83 % 85 % 86 % 88 % 9 % n-cloud Cloud Source: Cisco Visual Networking Index: Global Mobile Data Traffic Forecast Update, Network Coding in Cellular Networks The -CELL Technique Buffers Network Coding S-GW P-GW Internet Cloud MME UE E-UTRAN Evolved Packet Core LTE Network Key aspects: Coding opportunities Monitor and cache in transit traffic edebs can distribute information needed Identify coding opportunities by two or more users with a single coded Use of network coding to combine packets transmission. Optimal allocation for content distribution Number of transmissions at edeb: measuring throughput improvement Num. Transmissions CELL Disabled CELL Enabled k n Coding gain: measuring the benefit of network coding Coding gain η 7 6 k = 1 5 k = 8 4 k = 6 3 k = 4 2 k = Num. common chunks n u k ck,k c2k,k cn,k Optimizing information delivery of flows with overlapping or partially overlapping content. Important Facts Geographically co-located users Mobile cloud applications content Advertisement Maps Meteo Users u 2 u 1 c1,1 c2,2 c1,1 c2,2 ck 1,k 1 ck,k ck+1,1 ck+2,2 ck+1,1 ck+2,2 Individual Transmission - c2k 1,k 1 c2k,k cn k,1 cn k+1,2 cn k,1 cn k+1,2 Encoded Transmission cn 1,k 1 cn,k t Conclusion -CELL provides efficient content distribution for cloud applications in mobile cellular networks. It enables edeb nodes to monitor and cache in transit traffic and exploits network coding to combine packets. Acknowledgements Google w Network coding to combine information flows The authors would like to acknowledge the funding from National Research Fund, Luxembourg in the framework of ECO-CLOUD project (C12/IS/ ).

2 -CELL: Network Coding-based Content Distribution and At edeb -CELL Operation edeb exploits coding opportunity UE1 UE2 edeb Cloud Application Before performs header Packet B UE1 Send content B UE1 Packet (A B) UE1,UE2 Check if B is in buffer Coding (A B) UE1,UE2 edeb Decode B using A UE1 Decode A using B UE2

3 -CELL: Network Coding-based Content Distribution and At edeb -CELL Operation edeb exploits coding opportunity UE1 UE2 edeb Cloud Application Before performs header edeb

4 -CELL: Network Coding-based Content Distribution and At edeb -CELL Operation edeb exploits coding opportunity UE1 UE2 edeb Cloud Application Before performs header edeb

5 -CELL: Network Coding-based Content Distribution and At edeb -CELL Operation edeb exploits coding opportunity UE1 UE2 edeb Cloud Application Before performs header Packet B UE1 Send content B UE1 Packet (A B) UE1,UE2 Check if B is in buffer Coding (A B) UE1,UE2 edeb Decode B using A UE1 Decode A using B UE2