Delphi: A Software Controller for Mobile Network Selection
This paper presents Delphi, a mobile software controller that helps applications select the best network among available choices for their data transfers. Delphi optimizes a specified objective such as transfer completion time, or energy per byte transferred, or the monetary cost of a transfer. It h...
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2016
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| Online Access: | http://hdl.handle.net/1721.1/101636 |
| _version_ | 1826211942374572032 |
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| author | Deng, Shuo Sivaraman, Anirudh Balakrishnan, Hari |
| author2 | Hari Balakrishnan |
| author_facet | Hari Balakrishnan Deng, Shuo Sivaraman, Anirudh Balakrishnan, Hari |
| author_sort | Deng, Shuo |
| collection | MIT |
| description | This paper presents Delphi, a mobile software controller that helps applications select the best network among available choices for their data transfers. Delphi optimizes a specified objective such as transfer completion time, or energy per byte transferred, or the monetary cost of a transfer. It has four components: a performance predictor that uses features gathered by a network monitor, and a traffic profiler to estimate transfer sizes near the start of a transfer, all fed into a network selector that uses the prediction and transfer size estimate to optimize an objective.For each transfer, Delphi either recommends the best single network to use, or recommends Multi-Path TCP (MPTCP), but crucially selects the network for MPTCP s primary subflow . The choice of primary subflow has a strong impact onthe transfer completion time, especially for short transfers.We designed and implemented Delphi in Linux. It requires no application modifications. Our evaluation shows that Delphi reduces application network transfer time by 46% for Web browsing and by 49% for video streaming, comparedwith Android s default policy of always using Wi-Fi when it is available. Delphi can also be configured to achieve high throughput while being battery-efficient: in this configuration, it achieves 1.9x the throughput of Android s default policy while only consuming 6% more energy. |
| first_indexed | 2024-09-23T15:13:32Z |
| id | mit-1721.1/101636 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:13:32Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | mit-1721.1/1016362019-04-12T12:37:27Z Delphi: A Software Controller for Mobile Network Selection Deng, Shuo Sivaraman, Anirudh Balakrishnan, Hari Hari Balakrishnan Networks & Mobile Systems MPTCP Network Selection Wi-Fi LTE This paper presents Delphi, a mobile software controller that helps applications select the best network among available choices for their data transfers. Delphi optimizes a specified objective such as transfer completion time, or energy per byte transferred, or the monetary cost of a transfer. It has four components: a performance predictor that uses features gathered by a network monitor, and a traffic profiler to estimate transfer sizes near the start of a transfer, all fed into a network selector that uses the prediction and transfer size estimate to optimize an objective.For each transfer, Delphi either recommends the best single network to use, or recommends Multi-Path TCP (MPTCP), but crucially selects the network for MPTCP s primary subflow . The choice of primary subflow has a strong impact onthe transfer completion time, especially for short transfers.We designed and implemented Delphi in Linux. It requires no application modifications. Our evaluation shows that Delphi reduces application network transfer time by 46% for Web browsing and by 49% for video streaming, comparedwith Android s default policy of always using Wi-Fi when it is available. Delphi can also be configured to achieve high throughput while being battery-efficient: in this configuration, it achieves 1.9x the throughput of Android s default policy while only consuming 6% more energy. 2016-03-09T00:00:06Z 2016-03-09T00:00:06Z 2016-02-25 2016-03-09T00:00:06Z http://hdl.handle.net/1721.1/101636 MIT-CSAIL-TR-2016-004 14 p. application/pdf |
| spellingShingle | MPTCP Network Selection Wi-Fi LTE Deng, Shuo Sivaraman, Anirudh Balakrishnan, Hari Delphi: A Software Controller for Mobile Network Selection |
| title | Delphi: A Software Controller for Mobile Network Selection |
| title_full | Delphi: A Software Controller for Mobile Network Selection |
| title_fullStr | Delphi: A Software Controller for Mobile Network Selection |
| title_full_unstemmed | Delphi: A Software Controller for Mobile Network Selection |
| title_short | Delphi: A Software Controller for Mobile Network Selection |
| title_sort | delphi a software controller for mobile network selection |
| topic | MPTCP Network Selection Wi-Fi LTE |
| url | http://hdl.handle.net/1721.1/101636 |
| work_keys_str_mv | AT dengshuo delphiasoftwarecontrollerformobilenetworkselection AT sivaramananirudh delphiasoftwarecontrollerformobilenetworkselection AT balakrishnanhari delphiasoftwarecontrollerformobilenetworkselection |