Why cell phones will dominate the future internet
ACM SIGCOMM Computer Communication Review
Mining call and mobility data to improve paging efficiency in cellular networks
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Mobile call graphs: beyond power-law and lognormal distributions
Proceedings of the 14th ACM SIGKDD international conference on Knowledge discovery and data mining
Bayesian inference for localization in cellular networks
INFOCOM'10 Proceedings of the 29th conference on Information communications
The problem of sensing unused cellular spectrum
NETWORKING'11 Proceedings of the 10th international IFIP TC 6 conference on Networking - Volume Part II
Anonymization of location data does not work: a large-scale measurement study
MobiCom '11 Proceedings of the 17th annual international conference on Mobile computing and networking
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Cell phones are ubiquitous in modern life and the call records collected by network operators are a powerful tool to study the behavior of cell phone users, and how those users use network resources, at previously impossible-to-achieve scales. In this paper we report on results from the analysis of billions of call records at a large cellular operator and we describe how mining that data leads to new and extremely exciting research problems in the areas of social network analysis, privacy, and economics. We consider three kinds of data, namely social network data (who calls whom, how often, etc), location and mobility data (who is where) and spectrum data (who uses how much spectrum in which cell). We describe practical examples of insights derived from mining that data as well as interesting research questions such as i) why is the structure of the cell phone social network different from the power law found in many other networks, ii) how predictable and unique are mobility patterns and what does this mean for location privacy, or iii) how can we model and quantify the economic value of private user data such as location data.