NDLI: Cellular data network infrastructure characterization and implication on mobile content placement

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Cellular data network infrastructure characterization and implication on mobile content placement

Content Provider	ACM Digital Library
Author	Qian, Feng Wang, Zhaoguang Mao, Zhuoqing Morley Huang, Junxian Gerber, Alexandre Xu, Qiang
Abstract	Despite the tremendous growth in the cellular data network usage due to the popularity of smartphones, so far there is rather limited understanding of the network infrastructure of various cellular carriers. Understanding the infrastructure characteristics such as the network topology, routing design, address allocation, and DNS service configuration is essential for predicting, diagnosing, and improving cellular network services, as well as for delivering content to the growing population of mobile wireless users. In this work, we propose a novel approach for discovering cellular infrastructure by intelligently combining several data sources, i.e., server logs from a popular location search application, active measurements results collected from smartphone users, DNS request logs from a DNS authoritative server, and publicly available routing updates. We perform the first comprehensive analysis to characterize the cellular data network infrastructure of four major cellular carriers within the U.S. in our study. We conclude among other previously little known results that the current routing of cellular data traffic is quite restricted, as it must traverse a rather limited number (i.e., 4-6) of infrastructure locations (i.e., GGSNs), which is in sharp contrast to wireline Internet traffic. We demonstrate how such findings have direct implications on important decisions such as mobile content placement and content server selection. We observe that although the local DNS server is a coarse-grained approximation on the user's network location, for some carriers, choosing content servers based on the local DNS server is accurate enough due to the restricted routing in cellular networks. Placing content servers close to GGSNs can potentially reduce the end-to-end latency by more than 50% excluding the variability from air interface.
Starting Page	317
Ending Page	328
Page Count	12
File Format	PDF MP4
ISBN	9781450308144
DOI	10.1145/1993744.1993777
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2011-06-07
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Mobile content delivery Cellular network architecture Ggsn placement
Content Type	Audio Text
Resource Type	Article

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