Presentation 2020-10-07
ABC Slicing: Delay-guaranteed Bandwidth Slicing for Latency-Sensitive Applications
Takamitsu Iwai, Akihiro nakao,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) Applications such as video streaming and automated driving require low latency communication. The traffic in these applications can be classified according to bandwidth and latency requirements, and we can improve the QoE if we can control each of them satisfying their requirements. However, congestion control for low latency communication is difficult to control according to the requirements in order to treat the traffic fairly, while conventional bandwidth control causes queuing delay due to the wireless network where the communication state changes easily. In this paper, we propose ABC slicing, a method that enables per-traffic bandwidth control while minimizing queuing delay. We focus on Accelerate-Brake Control (ABC), which determines the optimal congestion window according to the queuing delay and available bandwidth. Based on the virtual link capacity defined for each allocated class, we calculate the congestion window size of the traffic of each class and enforce the control by overwriting this information to the TCP receiving window size on the middlebox. Since the calculation of the target rate in ABC is linear in relation to the link capacity, we can achieve flexible slicing and suppress the overall queuing delay by controlling ABC according to the bandwidth to be allocated in each slice. We evaluate the proposed method using real mobile tracing. We show that the proposed method can reduce the queuing delay by 78% by allocating the same amount of bandwidth to flows that are not bandwidth-intensive compared to conventional bandwidth control.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Congestion Control / Traffic Control / Low-Latency Traffic Control
Paper # NS2020-55
Date of Issue 2020-09-30 (NS)

Conference Information
Committee NS
Conference Date 2020/10/7(3days)
Place (in Japanese) (See Japanese page)
Place (in English) online
Topics (in Japanese) (See Japanese page)
Topics (in English) Network architecture (Overlay, P2P, Ubiquitous network, Scale-free network, Active network, NGN/NwGN, IoT, Edge computing, Next generation packet transport (High speed Ethernet, IP over WDM, Multi-service package technology, MPLS), Grid, etc.
Chair Akihiro Nakao(Univ. of Tokyo)
Vice Chair Tetsuya Oishi(NTT)
Secretary Tetsuya Oishi(NTT)
Assistant Shinya Kawano(NTT)

Paper Information
Registration To Technical Committee on Network Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) ABC Slicing: Delay-guaranteed Bandwidth Slicing for Latency-Sensitive Applications
Sub Title (in English)
Keyword(1) Congestion Control
Keyword(2) Traffic Control
Keyword(3) Low-Latency Traffic Control
1st Author's Name Takamitsu Iwai
1st Author's Affiliation University of Tokyo(UTokyo)
2nd Author's Name Akihiro nakao
2nd Author's Affiliation University of Tokyo(UTokyo)
Date 2020-10-07
Paper # NS2020-55
Volume (vol) vol.120
Number (no) NS-183
Page pp.pp.7-12(NS),
#Pages 6
Date of Issue 2020-09-30 (NS)