Backpressure on the Backbone: A Lightweight, Non-Intrusive Traffic Engineering Approach

Liaskos, Christos; Dimitropoulos, Xenofontas

doi:10.1109/tnsm.2016.2631477

Cited by 10 publications

(11 citation statements)

References 64 publications

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“…Reordering the terms in (40) we get the desired result. We note that in addition to the condition in (40) on convexity in log power variables, f (SINR vu (S) might be convex in s vu when the nodes have a total power constraint as given by ( 8) which is satisfied with equality.…”

Section: Appendix B Proof Of Propositionmentioning

confidence: 89%

“…There exist several pertinent power control algorithms to optimize the resource usage in wireless networks [35], [36], [37], [38], [39], or maximize throughput under latency considerations [40]. However, delay optimization in wireless links is challenging because of interference and congestion.…”

Section: A Current State Of the Art And Motivationmentioning

confidence: 99%

“…While each MC or SC might have a fiber connection to the backhaul network in 5G, Fig. 1: A caching network scenario with possible connections between the users, SCs or MCs, and to the backhaul, where the backhaul cost DSC of SC is typically higher than the backhaul cost DMC of MC connections [40]. A path p = {p1, p2, p3} for request (i, p) is indicated where p1 is a user where the request (i, p) is originated, p2 is a SC, and p3 is the MC.…”

Section: Wireless Caching Modelmentioning

confidence: 99%

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Transmission Delay Minimization via Joint Power Control and Caching in Wireless HetNets

Malak¹,

Mutlu²,

Zhang³

et al. 2021

Preprint

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A fundamental challenge in wireless heterogeneous networks (HetNets) is to effectively utilize the limited transmission and storage resources in the presence of increasing deployment density and backhaul capacity constraints. To alleviate bottlenecks and reduce resource consumption, we design optimal caching and power control algorithms for multi-hop wireless HetNets. We formulate a joint optimization framework to minimize the average transmission delay as a function of the caching variables and the signal-to-interference-plus-noise ratios (SINR) which are determined by the transmission powers, while explicitly accounting for backhaul connection costs and the power constraints.Using convex relaxation and rounding, we obtain a reducedcomplexity formulation (RCF) of the joint optimization problem, which can provide a constant factor approximation to the globally optimal solution. We then solve RCF in two ways: 1) alternating optimization of the power and caching variables by leveraging biconvexity, and 2) joint optimization of power control and caching. We characterize the necessary (KKT) conditions for an optimal solution to RCF, and use strict quasi-convexity to show that the KKT points are Pareto optimal for RCF. We then devise a subgradient projection algorithm to jointly update the caching and power variables, and show that under appropriate conditions, the algorithm converges at a linear rate to the local minima of RCF, under general SINR conditions. We support our analytical findings with results from extensive numerical experiments.

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Section: Appendix B Proof Of Propositionmentioning

confidence: 89%

Section: A Current State Of the Art And Motivationmentioning

confidence: 99%

Section: Wireless Caching Modelmentioning

confidence: 99%

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Transmission Delay Minimization via Joint Power Control and Caching in Wireless HetNets

Malak¹,

Mutlu²,

Zhang³

et al. 2021

Preprint

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“…e proposed method can also be applied in conventional Internet topologies enabling guaranteed end-to-end delay via inter-domain routing [15,[26][27][28].…”

Section: System Evaluationmentioning

confidence: 99%

Enabling Ultra-Low Delay Teleorchestras using Software Defined Networking

Lakiotakis,

Liaskos,

Dimitropoulos

2018

Preprint

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Ultra-low delay sensitive applications can afford delay only at the level of msec. An example of this application class are the Networked Music Performance (NMP) systems that describe a live music performance by geographically separate musicians over the Internet.e present work proposes a novel architecture for NMP systems, where the key-innovation is the close collaboration between the network and the application. Using SDN principles, the applications are enabled to adapt their internal audio signal processing, in order to cope with network delay increase. us, affordable end-to-end delay is provided to NMP users, even under considerable network congestion.

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“…From the network perspective, SDN is widely used in network condition-aware applications [16]- [19]. The main feature is that traffic is prioritized using criteria such as Type of Service (TOS), requirements, SLAs or packet header fields [20]- [23].…”

Section: Related Workmentioning

confidence: 99%

Application-network collaboration using SDN for ultra-low delay teleorchestras

Lakiotakis

Liaskos

Dimitropoulos

2017

2017 IEEE Symposium on Computers and Communications (ISCC)

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Networked Music Performance (NMP) constitutes a class of ultra-low delay sensitive applications, allowing geographically separate musicians to perform seamlessly as a tele-orchestra. For this application type, the QoS indicator is the mouth-to-ear delay, which should be kept under 25 milliseconds. The mouth-to-ear delay comprises signal processing latency and network delay. We propose a strong collaboration between the network and NMP applications to actively keep the to mouth-to-ear delay minimal, using direct state notifications. Related approaches can be characterized as passive, since they try to estimate the network state indirectly, based on the end application performance. Our solution employs Software Defined Networking (SDN) to implement the network-toapplication collaboration, being facilitated by the well-defined network interface that SDN offers. Emulation results show that the proposed scheme achieves an improvement of up to 59% in mouth-to-ear delay over the existing passive solutions.

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Backpressure on the Backbone: A Lightweight, Non-Intrusive Traffic Engineering Approach

Cited by 10 publications

References 64 publications

Transmission Delay Minimization via Joint Power Control and Caching in Wireless HetNets

Transmission Delay Minimization via Joint Power Control and Caching in Wireless HetNets

Enabling Ultra-Low Delay Teleorchestras using Software Defined Networking

Application-network collaboration using SDN for ultra-low delay teleorchestras

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