MultiNets: Policy Oriented Real-Time Switching of Wireless Interfaces on Mobile Devices

Nirjon, Shahriar; Nicoarã, Angela; Hsu, Cheng-Hsin; Singh, Jatinder; Stankovic, John A.

doi:10.1109/rtas.2012.9

Cited by 41 publications

(24 citation statements)

References 18 publications

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“…The practical value and applicability of this work is further highlighted by recent work using our techniques. One such example is MultiNets [30], which utilizes our Wait-and-Migrate mechanism to switch between cellular and Wi-Fi networks, in order to save energy, offload data from cellular networks, and/or improve performance. There are two solutions related to Resumption Agent.…”

Section: B Related Workmentioning

confidence: 99%

Seamless TCP Migration on Smartphones without Network Support

Rahmati

Shepard

Tossell³

et al. 2014

IEEE Trans. on Mobile Comput.

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Abstract-Is it possible to migrate TCP/IP flows between different networks on modern mobile devices without infrastructure support or protocol changes?To answer this question, we make three research contributions. (i) We report a comprehensive characterization of IP traffic on 27 iPhone 3GS users for three months. (ii) Driven by these findings, we devise two simple, effective, and easily deployable system mechanisms to support seamless flow migration without network support, and extensively evaluate their effectiveness using our field collected traces of real-life usage. Wait-n-Migrate leverages the fact that most flows are short lived. It establishes new flows on newly available networks but allows pre-existing flows on the old network to terminate naturally. Resumption Agent takes advantage of the resumption functionality of modern protocols to securely resume flows without application intervention. Combined, they provide an unprecedented opportunity to immediately deploy policies that leverage multiple networks to improve the performance, efficiency, and connectivity of mobile devices. (iii) We report an iPhone based implementation of these system mechanisms and demonstrate their overhead to be negligible. Furthermore, we employ a sample switching policy, AutoSwitch, to demonstrate their performance. Through traces and field measurements, we show that AutoSwitch reduces user disruptions by an order of magnitude.Index Terms-Mobile Computing, Network Architecture and Design, User/Machine Systems ---------- ----------

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Section: B Related Workmentioning

confidence: 99%

Seamless TCP Migration on Smartphones without Network Support

Rahmati

Shepard

Tossell³

et al. 2014

IEEE Trans. on Mobile Comput.

Self Cite

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“…Several schemes transmitting data on multiple network interfaces have been proposed in the past [22,17,15,21]. Among these, the most widespread is MPTCP [21].…”

Section: Mptcp Measurementsmentioning

confidence: 99%

WiFi, LTE, or Both?

Deng

Netravali

Sivaraman

et al. 2014

Proceedings of the 2014 Conference on Internet Measurement Conference

152

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Over the past two or three years, wireless cellular networks have become faster than before, most notably due to the deployment of LTE, HSPA+, and other similar networks. LTE throughputs can reach many megabits per second and can even rival WiFi throughputs in some locations. This paper addresses a fundamental question confronting transport and application-layer protocol designers: which network should an application use? WiFi, LTE, or Multi-Path TCP (MPTCP) running over both?We compare LTE and WiFi for transfers of different sizes along both directions (i.e. the uplink and the downlink) using a crowdsourced mobile application run by 750 users over 180 days in 16 different countries. We find that LTE outperforms WiFi 40% of the time, which is a higher fraction than one might expect at first sight.We measure flow-level MPTCP performance and compare it with the performance of TCP running over exclusively WiFi or LTE in 20 different locations across 7 cities in the United States. For short flows, we find that MPTCP performs worse than regular TCP running over the faster link; further, selecting the correct network for the primary subflow in MPTCP is critical in achieving good performance. For long flows, however, selecting the proper MPTCP congestion control algorithm is equally important. To complement our flow-level analysis, we analyze the traffic patterns of several mobile apps, finding that apps can be categorized as "short-flow dominated" or "long-flow dominated". We then record and replay these patterns over emulated WiFi and LTE links. We find that application performance has a similar dependence on the choice of networks as flow-level performance: an application dominated by short flows sees little gain from MPTCP, while an application with longer flows can benefit much more from MPTCP -if the application can pick the right network for the primary subflow and the right choice of MPTCP congestion control.

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“…Wiffler [38] was developed to augment third-generation (3G) network capacity for delay-tolerant applications over vehicular networks. MultiNets [39] is a seamless offloading system that allows a mobile device to automatically switch to the most suitable network interface based on user-defined policies such as energy saving and throughput. Wiffler and MultiNets make offloading decisions based on historical bandwidth records and signal strength that do not reflect the current traffic load.…”

Section: Related Workmentioning

confidence: 99%

Game-Theoretic Scalable Offloading for Video Streaming Services over LTE and WiFi Networks

Park

Song

2018

IEEE Trans. on Mobile Comput.

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Abstract-This paper presents a game-theoretic scalable offloading system that provides seamless video streaming services by effectively offloading parts of video traffic in all video streaming services to a WiFi network to alleviate cellular network congestion. The system also consolidates multiple physical paths in a cost-effective manner. In the proposed system, the fountain encoding symbols of compressed video data are transmitted through long term evolution (LTE) and WiFi networks concurrently to flexibly control the amount of video traffic through the WiFi network as well as mitigate video quality degradation caused by wireless channel errors. Furthermore, the progressive second price auction mechanism is employed to allocate the limited LTE resources to multiple user equipment in order to maximize social welfare while converging to the ε-Nash equilibrium.Specifically, we design an application-centric resource valuation that explicitly considers both the realistic wireless network conditions and characteristics of video streaming services. In addition, the scalability and convergence properties of the proposed system are verified both theoretically and experimentally. The proposed system is implemented using network simulator 3. Simulation results are provided to demonstrate the performance improvement of the proposed system.

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MultiNets: Policy Oriented Real-Time Switching of Wireless Interfaces on Mobile Devices

Cited by 41 publications

References 18 publications

Seamless TCP Migration on Smartphones without Network Support

Seamless TCP Migration on Smartphones without Network Support

WiFi, LTE, or Both?

Game-Theoretic Scalable Offloading for Video Streaming Services over LTE and WiFi Networks

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