Details
| Original language | English |
|---|---|
| Title of host publication | 2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (electronic) | 9798350329285 |
| ISBN (print) | 1090-3038 |
| Publication status | Published - 2023 |
| Event | 98th IEEE Vehicular Technology Conference (VTC 2023-Fall) - Hong Kong, China Duration: 10 Oct 2023 → 13 Oct 2023 |
Publication series
| Name | IEEE Vehicular Technology Conference |
|---|---|
| ISSN (Print) | 1550-2252 |
Abstract
The ongoing deployment of 5G networks and the heterogeneity of carrier aggregation in 4G networks have resulted in vast differences of cellular network performance across different locations. Especially for mobile users, such fluctuation in performance based on location can result in a highly degraded user experience. The problem is compounded by the fact that popular TCP congestion control variants, such as CUBIC and BBR, can be slow to adjust their congestion window when network conditions change rapidly.In this paper, we analyze the extent to which the network conditions can change over brief periods of time for mobile users by performing repeated drive tests on a route with a diverse network coverage. We show that due to differences in the availability of different 4G and 5G carriers, the total carrier bandwidth available to a user can change multiple times in a period of a few seconds, which results in major changes of achievable throughput. As TCP can be slow in adjusting its congestion window, this can result in either low bandwidth utilization or high delays due to bufferbloat. We propose that for a more efficient bandwidth utilization, the information about total carrier bandwidth could be used in TCP congestion control.
ASJC Scopus subject areas
- Computer Science(all)
- Computer Science Applications
- Engineering(all)
- Electrical and Electronic Engineering
- Mathematics(all)
- Applied Mathematics
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2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2023. (IEEE Vehicular Technology Conference).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - TCP Congestion Control Performance Issues in Non-Standalone 5G NR Networks
AU - Prause, Lukas
AU - Akselrod, Mark
PY - 2023
Y1 - 2023
N2 - The ongoing deployment of 5G networks and the heterogeneity of carrier aggregation in 4G networks have resulted in vast differences of cellular network performance across different locations. Especially for mobile users, such fluctuation in performance based on location can result in a highly degraded user experience. The problem is compounded by the fact that popular TCP congestion control variants, such as CUBIC and BBR, can be slow to adjust their congestion window when network conditions change rapidly.In this paper, we analyze the extent to which the network conditions can change over brief periods of time for mobile users by performing repeated drive tests on a route with a diverse network coverage. We show that due to differences in the availability of different 4G and 5G carriers, the total carrier bandwidth available to a user can change multiple times in a period of a few seconds, which results in major changes of achievable throughput. As TCP can be slow in adjusting its congestion window, this can result in either low bandwidth utilization or high delays due to bufferbloat. We propose that for a more efficient bandwidth utilization, the information about total carrier bandwidth could be used in TCP congestion control.
AB - The ongoing deployment of 5G networks and the heterogeneity of carrier aggregation in 4G networks have resulted in vast differences of cellular network performance across different locations. Especially for mobile users, such fluctuation in performance based on location can result in a highly degraded user experience. The problem is compounded by the fact that popular TCP congestion control variants, such as CUBIC and BBR, can be slow to adjust their congestion window when network conditions change rapidly.In this paper, we analyze the extent to which the network conditions can change over brief periods of time for mobile users by performing repeated drive tests on a route with a diverse network coverage. We show that due to differences in the availability of different 4G and 5G carriers, the total carrier bandwidth available to a user can change multiple times in a period of a few seconds, which results in major changes of achievable throughput. As TCP can be slow in adjusting its congestion window, this can result in either low bandwidth utilization or high delays due to bufferbloat. We propose that for a more efficient bandwidth utilization, the information about total carrier bandwidth could be used in TCP congestion control.
UR - http://www.scopus.com/inward/record.url?scp=85181174024&partnerID=8YFLogxK
U2 - 10.1109/VTC2023-Fall60731.2023.10333357
DO - 10.1109/VTC2023-Fall60731.2023.10333357
M3 - Conference contribution
AN - SCOPUS:85181174024
SN - 1090-3038
T3 - IEEE Vehicular Technology Conference
BT - 2023 IEEE 98th Vehicular Technology Conference, VTC 2023-Fall - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 98th IEEE Vehicular Technology Conference (VTC 2023-Fall)
Y2 - 10 October 2023 through 13 October 2023
ER -