Evidence-aware Mobile Computational Offloading

Huber Flores, Pan Hui, Petteri Nurmi, Eemil Lagerspetz, Sasu Tarkoma, Jukka Manner, Vassilis Kostakos, Yong Li, Xiang Su

Research output: Contribution to journalArticleScientificpeer-review

29 Citations (Scopus)
222 Downloads (Pure)


Computational offloading can improve user experience of mobile apps through improved responsiveness and reduced energy footprint. Currently, offloading decisions are predominantly based on profiling performed on individual devices. While significant gains have been shown in benchmarks, these gains rarely translate to real-world use due to the complexity of contexts and parameters that affect offloading. We contribute by proposing crowdsensed evidence traces as a novel mechanism for improving the performance of offloading systems. Instead of limiting to profiling individual devices, crowdsensing enables characterising execution contexts across a community of users, providing better generalisation and coverage of contexts. We demonstrate the feasibility of using crowdsensing to characterize offloading contexts through an analysis of two crowdsensing datasets. Motivated by our results, we present the design and development of EMCO toolkit and platform as a novel solution for computational offloading. Experiments carried out on a testbed deployment in Amazon EC2 Ireland demonstrate that EMCO can consistently accelerate app execution while at the same time reduce energy footprint. We demonstrate that EMCO provides better scalability than current cloud platforms, being able to serve a larger number of clients without variations in performance. Our framework, use cases, and tools are available as open source from github.

Original languageEnglish
Pages (from-to)1834-1850
Number of pages18
JournalIEEE Transactions on Mobile Computing
Issue number8
Early online date23 Nov 2017
Publication statusPublished - Aug 2018
MoE publication typeA1 Journal article-refereed


  • Acceleration
  • Big Data
  • Cloud computing
  • Computational Offloading
  • Context
  • Crowdsensing
  • Mobile applications
  • Mobile Cloud Computing
  • Mobile communication
  • Mobile computing
  • Performance evaluation


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