Understanding bufferbloat in cellular networks

Jiang, Haiqing; Liu, Zeyu; Wang, Yaogong; Lee, Kyunghan; Rhee, Injong

doi:10.1145/2342468.2342470

Cited by 62 publications

(22 citation statements)

References 19 publications

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“…The presence of bufferbloat in 3G/4G cellular networks was confirmed in [2]. Bufferbloat refers to the phenomenon of excess buffering of frames and the high latency and low throughput caused by it [3].…”

Section: Introductionmentioning

confidence: 92%

Per-Flow Throughput Fairness in Ring Aggregation Network with Multiple Edge Routers

Nakayama¹,

Sezaki

2018

BDCC

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Ring aggregation networks are often employed by network carriers because of their efficiency and high fault tolerance. A fairness scheme is required in ring aggregation to achieve per-flow throughput fairness and bufferbloat avoidance, because frames are forwarded along multiple ring nodes. N Rate N + 1 Color Marking (NRN + 1CM) was proposed to achieve fairness in ring aggregation networks consisting of Layer-2 Switches (SWs). With NRN + 1CM, frames are selectively discarded based on color and the frame-dropping threshold. To avoid the accumulation of a queuing delay, frames are discarded at upstream nodes in advance through the notification process for the frame-dropping threshold. However, in the previous works, NRN + 1CM was assumed to be employed in a logical daisy chain topology linked to one Edge Router (ER). The currently available threshold notification process of NRN + 1CM cannot be employed for ring networks with multiple ERs. Therefore, this paper proposes a method for applying NRN + 1CM to a ring aggregation network with multiple ERs. With the proposed algorithm, an SW dynamically selects the dropping threshold to send in order to avoid excess frame discarding. The performance of the proposed scheme was confirmed through computer simulations.

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Section: Introductionmentioning

confidence: 92%

Per-Flow Throughput Fairness in Ring Aggregation Network with Multiple Edge Routers

Nakayama¹,

Sezaki

2018

BDCC

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“…As an example, Wi-Fi and cellular interfaces are pervasively available on modern wireless devices. Wi-Fi and cellular have very different characteristics: Wi-Fi typically exhibits stable RTTs with relatively high loss rates, while cellular has variable and large RTTs with low loss rates (with the large variable RTTs attributed to "bufferbloat" [223], [224] that refers to unnecessary provisioning of buffers throughout the network which hinders the congestion control process). The heterogeneous characteristics of the underlying technologies on the Internet can cause performance issues.…”

Section: Open and Current Research Issuesmentioning

confidence: 99%

Exploiting the Power of Multiplicity: A Holistic Survey of Network-Layer Multipath

Qadir

Ali

Yau

et al. 2015

IEEE Commun. Surv. Tutorials

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Abstract-The Internet is inherently a multipath network-for an underlying network with only a single path connecting various nodes would have been debilitatingly fragile. Unfortunately, traditional Internet technologies have been designed around the restrictive assumption of a single working path between a source and a destination. The lack of native multipath support constrains network performance even as the underlying network is richly connected and has redundant multiple paths. Computer networks can exploit the power of multiplicity-through which a diverse collection of paths is resource pooled as a single resource-to unlock the inherent redundancy of the Internet. This opens up a new vista of opportunities promising increased throughput (through concurrent usage of multiple paths) and increased reliability and fault-tolerance (through the use of multiple paths in backup/ redundant arrangements). There are many emerging trends in networking that signify that the Internet's future will be unmistakably multipath, including the use of multipath technology in datacenter computing; multi-interface, multi-channel, and multi-antenna trends in wireless; ubiquity of mobile devices that are multi-homed with heterogeneous access networks; and the development and standardization of multipath transport protocols such as MP-TCP.The aim of this paper is to provide a comprehensive survey of the literature on network-layer multipath solutions. We will present a detailed investigation of two important design issues, namely the control plane problem of how to compute and select the routes, and the data plane problem of how to split the flow on the computed paths. The main contribution of this paper is a systematic articulation of the main design issues in network-layer multipath routing along with a broad-ranging survey of the vast literature on network-layer multipathing. We also highlight open issues and identify directions for future work.

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“…Implications: Load increase in a cell can significantly throttle the bandwidth available to a UE and thus increase the delay, especially when the eNodeB maintains a large per-UE queue [15]. Such sudden delay increases can invalidate the current TCP estimated RTO value that was calculated before the delay peak and therefore cause unnecessary TCP timeouts, even when no packets are lost.…”

Section: Load Increase In a Cellmentioning

confidence: 99%

Towards understanding TCP performance on LTE/EPC mobile networks

Nguyen

Banerjee

Gopalakrishnan

et al. 2014

Proceedings of the 4th Workshop on All Things Cellular: Operations, Applications, &Amp; Challenges

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-The popularity of smartphones and smartphone applications means that data is the dominant traffic type in current mobile networks. In this paper we present our work on a systematic investigation into facets of the LTE/EPC architecture that impact the performance of TCP as the predominant transport layer protocol used by applications on mobile networks. We found that (1) load increase in a cell causes dramatic bandwidth reduction on UEs and significantly degrades TCP performance, (2) seamless handover causes significant TCP losses while lossless handover increases TCP segments' delay.

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Understanding bufferbloat in cellular networks

Cited by 62 publications

References 19 publications

Per-Flow Throughput Fairness in Ring Aggregation Network with Multiple Edge Routers

Per-Flow Throughput Fairness in Ring Aggregation Network with Multiple Edge Routers

Exploiting the Power of Multiplicity: A Holistic Survey of Network-Layer Multipath

Towards understanding TCP performance on LTE/EPC mobile networks

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