@techreport{TD:101999,
	att_abstract={{We consider a problem of managing Firmware Over-The-Air (FOTA)
updates for cars at a massive scale over a cellular network. This
problem is constrained by factors like large number of cars, a need
to perform updates quickly and securely, ability to do the update
anywhere and any time, and delivering the often large update without
harming the network. We present a scheduling approach for
managing large FOTA downloads in a cellular network that combines
historical network load with car usage and location analytics.
The proposed approach uses a combination of heuristics and an
optimized scheduler and applies them to schedule the admission of
cars to download FOTA.
We show that a network-scale analysis involving 1 million cars
and nearly 1 billion radio-level network connections is possible
and practical, and that it is possible to manage FOTA even when
device and network models use high levels of aggregation over
time. Using simulations based on real network data from a large
cellular provider, we show that our method improves over random
uncontrolled approach by (i) reducing median download startup
delay by 48%, (ii) reducing the number of cars that don’t complete
the update by 10% and most importantly, (iii) reducing the load in
busy cells by up to 37%.}},
	att_authors={lt3138, sb1835, cd338h, vg7777, eh679n, mm1804, dp8462, cv2452},
	att_categories={C_BB.1, C_BB.6, C_CCF.1, C_CCF.7, C_CCF.8, C_NSS.7, C_NSS.9},
	att_copyright={{ACM}},
	att_copyright_notice={{(c) ACM, 2017. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in The Second ACM International Workshop on Connected and Automated Vehicle Mobility (CarSys) {{, 2017-08-20}}{{, 10.1145/3131944.3131953}}.
}},
	att_donotupload={},
	att_private={false},
	att_projects={},
	att_tags={software update,  network optimization,  IoT,  connected cars,  FOTA,  network managment,  location analytics},
	att_techdoc={true},
	att_techdoc_key={TD:101999},
	att_url={http://web1.research.att.com:81/techdocs_downloads/TD:101999_DS1_2017-08-23T00:00:13.702Z.pdf},
	author={Lien Tran and Simon Byers and Carlos eduardo De andrade and Vijay Gopalakrishnan and Emir Halepovic and Milap Majmundar and David Poole and Christopher Volinsky},
	institution={{The Second ACM International Workshop on Connected and Automated Vehicle Mobility (CarSys)}},
	month={August},
	title={{Managing massive firmware-over-the-air updates for connected cars in cellular networks}},
	year=2017,
}