Wi-Stitch:
Content Delivery in Converged Edge Networks


Abstract

Wi-Fi, the most commonly used access technology at the very edge, supports download speeds that are orders of magnitude faster than the average home broadband or cellular data connection. Furthermore, it is extremely common for users to be within reach of their neighbours' Wi-Fi access points. Given the skewed nature of interest in content items, it is likely that some of these neighbours are interested in the same items as the users. We sketch the design of Wi-Stitch, an architecture that exploits these observations to construct a highly efficient content sharing infrastructure at the very edge and show through analysis of a real workload that it can deliver substantial (up to 70%) savings in network traffic. The Wi-Stitch approach can be used both by clients of fixed-line broadband, as well as mobile devices obtaining indoors access in converged networks.

Wi-Stitch Dataset

An anonymized version of the WiGLE dataset in our paper is being made available to the research community. If you are interested in using this data, please fill the form in the Request Dataset section. The dataset is divided into the following parts:

  1. WiGLE wifi Access points across six districts : In CSV format we provide the SSID, MAC-ID, Latitude, Longitude of the wardriven WiFi Access points from six districts of varying population densities across the UK

  2. BT WiFi Access points (accuracy upto 80m) for the districts mentioned in the paper.

  3. Geographical Map (in KML Format) and scripts to reproduce Fig 1, Fig 2 from the paper.

You can find the format of the dataset from here.


Request Dataset


If you are interested in using this data, please fill the form to to get the link where you can download the data.

We are sharing the dataset under the terms and conditions specified here (link). Please note that submitting the form indicates that you accept the terms and conditions of the data. In the form, please indicate which part of the dataset you need. If you do not get any email notification for your logged request within 24 hours, please e-mail us at netsys.noreply[at]gmail.com.

Dataset Terms and Conditions

  1. You will use the data solely for the purpose of non-profit research or non-profit education.

  2. You will respect the privacy of end users and organizations that may be identified in the data. You will not attempt to reverse engineer, decrypt, de-anonymize, derive or otherwise re-identify anonymized information.

  3. You will not distribute the data beyond your immediate research group.

  4. If you create a publication using our datasets, please cite our papers as follows.


@article{raman2017mecomm,
     author = {Raman, Aravindh and Sastry, Nishanth and Sathiaseelan, Arjuna and Chandaria, Jigna and Secker, Andrew},
     title = {Wi-Stitch: Content Delivery in Converged Edge Networks},
     journal = {SIGCOMM Comput. Commun. Rev.},
     issue_date = {October 2017},
     volume = {47},
     number = {5},
     month = oct,
     year = {2017},
     issn = {0146-4833},
     pages = {73--78},
     numpages = {6},
     doi = {10.1145/3155055.3155067},
     acmid = {3155067},
     publisher = {ACM},
     address = {New York, NY, USA}
    }