Abstract
Recent advances in mobile technologies such as 5G and WiFi 6E do not seem to deliver the promised mobile access bandwidth. To effectively characterize mobile access bandwidth in the wild, we work with a major commercial mobile bandwidth testing app to analyze mobile access bandwidths of 3.54M end users in China, based on fine-grained measurement and diagnostic information. Our analysis presents a surprising and frustrating fact-in the past two years, the average WiFi bandwidth remains largely unchanged, while the average 4G/5G bandwidth decreases remarkably. Our analysis further reveals the root causes-The bottlenecks in the underlying infrastructure (e.g., devices and wired Internet access) and side effects of aggressively migrating radio resources from 4G to 5G-with implications on closing the technology gaps. Additionally, our analysis provides insights on building ultra-fast, ultra-light bandwidth testing services (BTSes) at scale. Our new design dramatically reduces the test time of the commercial BTS from 10 seconds to 1 second on average, with a 15× reduction on the backend cost.
Original language | English (US) |
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Title of host publication | SIGCOMM 2022 - Proceedings of the ACM SIGCOMM 2022 Conference |
Publisher | Association for Computing Machinery, Inc |
Pages | 114-128 |
Number of pages | 15 |
ISBN (Electronic) | 9781450394208 |
DOIs | |
State | Published - Aug 22 2022 |
Event | 2022 Conference of the ACM Special Interest Group on Data Communication, SIGCOMM 2022 - Amsterdam, Netherlands Duration: Aug 22 2022 → Aug 26 2022 |
Publication series
Name | SIGCOMM 2022 - Proceedings of the ACM SIGCOMM 2022 Conference |
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Conference
Conference | 2022 Conference of the ACM Special Interest Group on Data Communication, SIGCOMM 2022 |
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Country/Territory | Netherlands |
City | Amsterdam |
Period | 8/22/22 → 8/26/22 |
Bibliographical note
Funding Information:We appreciate Li Ma and Guangbiao Liu for their help in data collection and system deployment. We sincerely thank our shepherd Jia Wang and the anonymous reviewers for their valuable feedbacks and constructive suggestions. We also appreciate Jiaxing Qiu, Wei Liu, Yang Li, and Jianwei Zheng for their help in improving the presentation of this paper. This work is supported in part by the National Key R&D Program of China under grant 2021YFB2900100, the National Natural Science Foundation of China (NSFC) under grant 61902211, and Microsoft Research Asia.
Publisher Copyright:
© 2022 Owner/Author.
Keywords
- LTE/5G network
- access bandwidth
- bandwidth testing
- mobile network
- wifi network