1. Yufeng Duan Supervisor: Prof. Paolo Giaccone Collaborators: Pino Castrogiovanni, Dario Mana, Claudio Borean Transparent Bandwidth Aggregation in a Residential Access Network

2. 2A Transparent Bandwidth Aggregation in Residential Network Motivation

3. 3 802.11b 54 Mbit/s 802.11n 72.2 Mbit/s (2.4GHz) ADSL2+M D=24.0 Mbit/s U=3.3 Mbit/s A Transparent Bandwidth Aggregation in Residential Network Motivation

4. Previous Work A Transparent Bandwidth Aggregation in Residential Network4 [1] Kandula, S., Lin, K. C. J., Badirkhanli, T., & Katabi, D. (2008, April). FatVAP: Aggregating AP Backhaul Capacity to Maximize Throughput. InNSDI (Vol. 8, pp. 89-104). [2] Giustiniano, D., Goma, E., Lopez Toledo, A., Dangerfield, I., Morillo, J., & Rodriguez, P. (2010, September). Fair WLAN backhaul aggregation. InProceedings of the sixteenth annual international conference on Mobile computing and networking (pp. 269-280). ACM.

5. Previous Work A Transparent Bandwidth Aggregation in Residential Network5 [1] Kandula, S., Lin, K. C. J., Badirkhanli, T., & Katabi, D. (2008, April). FatVAP: Aggregating AP Backhaul Capacity to Maximize Throughput. InNSDI (Vol. 8, pp. 89-104). [2] Giustiniano, D., Goma, E., Lopez Toledo, A., Dangerfield, I., Morillo, J., & Rodriguez, P. (2010, September). Fair WLAN backhaul aggregation. InProceedings of the sixteenth annual international conference on Mobile computing and networking (pp. 269-280). ACM.

6. Our Propose Beyond One’s Bandwidth

7. Our Propose Totally transparent to the clients Supports also 802.11n

8. Load Balancing Problem Neighbor AP Local AP Local User Path 1 Path 2

9. Load Balancing Problem Neighbor AP Local AP Local User?? New flow

10. Load Balancing Solution Round Robin Algorithm Neighbor AP Local AP Local User??

11. Load Balancing Neighbor AP Local AP Pending Flow Balancing (PFB) 10 flows * 9 flows

12. Load Balancing Pending Flow Balancing (PFB) 10 flows * 9 flows Neighbor AP Local AP Local User Path 1 Path 2

13. A Transparent Bandwidth Aggregation in Residential Network13 User Fairness Guarantee A user only shares the bandwidth when itself is not affected. Local AP Neighbor AP Hierarchical Token Bucket Traffic generated by local user Traffic generated by neighbor user

14. A Transparent Bandwidth Aggregation in Residential Network14 User Fairness Hierarchical Token Bucket Broadband LocalNeighbor NB1…

15. A Transparent Bandwidth Aggregation in Residential Network15 User Fairness Hierarchical Token Bucket Broadband LocalNeighbor NB1… 2mbit/s | 2mbit/s | 0 1.9mbit/s | 2mbit/s | 0 0.1mbit/s | 2mbit/s | 1 0..04mbit/s | 2mbit/s | 8 0..06mbit/s | 2mbit/s | 4

16. A Transparent Bandwidth Aggregation in Residential Network16 Implementation AG2AG1AG3 AP1sta0AP1sta0 AP1sta0 AP0 eth0

17. A Transparent Bandwidth Aggregation in Residential Network17 Implementation AG2AG1AG3 AP1sta0AP1sta0 AP1sta0 AP0 eth0 10.0.0.0/24 10.0.1.0/24 192.168.1.0/24

18. Load Balancing New Packet? Mark Routing based on mark Restore mark LB Alogirth RR/PFB Y N

19. A Transparent Bandwidth Aggregation in Residential Network19 Performance X2 X3 X1 or X1.2 2APs 3APs Cloud storage uploading throughput

20. A Transparent Bandwidth Aggregation in Residential Network20 Performance Total File Size (MB) # FilestheoryPFBRR 116100235.1264.4283.2 Load balancing algorithm on symmetric and asymmetric links Time (s) used to upload files Total File Size (MB) # FilestheoryPFBRR 116100235.1272.3357.7

21. A Transparent Bandwidth Aggregation in Residential Network21 Performance User fairness

22. A Transparent Bandwidth Aggregation in Residential Network22 Discussion Our propose o Totally transparent to the users o A user cannot see a performance degradation while sharing o It also supports 802.11n Cloud storage behavior o Google Drive: opens 3 connections, connection rate detection, traffic steering o Dropbox: sometimes 2 TCP connections, both for data transfer

23. A Transparent Bandwidth Aggregation in Residential Network23 Discussion Load balancing algorithm o PFB is more important in heterogeneous network: 3G/4G Introducing SDN o Implementation can be easily migrated to Open VSwitch

24. A Transparent Bandwidth Aggregation in Residential Network24 Thank you