5g and the evolution of internet protocols...2017/04/06 · etsi summit 4 5g network infrastructure...

ETSI SUMMIT ON 5G NETWORK INFRASTRUCTURE

5GANDTHEEVOLUTIONOFINTERNETPROTOCOLSPresentedbyJariArkkoMember,InternetArchitectureBoard(IAB)&SeniorExpert,EricssonResearchSpeakingasanindividual;Photoandgraphiccredits:ETSI,Ericsson,O.Kolkman,&D.Thaler

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ETSI Summit 5G Network Infrastructure

OUTLINE

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•  5GhasanimpactontheInternet?OrInternetevolu;onhasanimpacton5G?

•  Examplesofongoingevolu;onoftheInternet•  Whatmakesforasuccessfulprotocol?•  WorkingwithandintheIETF

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ONGOINGEVOLUTIONSomeareasofacUveInternetevoluUon

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ETSI Summit 5G Network Infrastructure 4

•  Webprotocolstack(HTTP2,QUIC)•  Securityandprivacy(increasingTLSusage,IETFdevelopments)

•  Real-;mecommunica;onsfrombrowsers(WebRTC)

•  Management,orchestra;on,virtualisa;on,soTware-anddata-modeldrivennetworking(NVO,SFC,YANG,SDN)

•  Latencyimprovements•  InternetofThings•  Runningcodeandopensource

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ONGOINGEVOLUTION


OBSERVATIONSONTHEFASTPACEOFEVOLUTION

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•  Why?Weneededallthosethings…andeverythingrunsonthewebtoday;butmarket&trafficconsolida;onalsoplayedarole

•  Predic;on:BigshiTssofar,evenbiggerahead•  Func;onalitymovestoapplica;ons&browsers,evenfasterchangeahead!What’snext?

•  Atthesame;me,virtualiza;onandSDNaredrivinganotherquickchangeinnetworks

•  5Gneedstoembracethesechanges(andhas)

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OTHERNOTABLETRENDS

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•  SmartobjectsshiTingfromclosed,ver;calsolu;onstomoregeneralnetworkingsolu;ons(mobilenetworks&WLAN,Internet)•  Newchallengesfoundonhigherlayers(security,

seman;cinteroperability)

•  Lowlatencyasacross-cudngissueinmanydevelopments

•  Opensourcedevelopment&workingmethods;effectonstandards?

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IEEE802.15.4

WiFi3GLTE

BTLE

IPv6

TCP/UDP

6LoWPAN

REST(CoAP,HTTP)

ResourceView/temp /light /switch


WHATMAKESFORASUCCESSFULPROTOCOL?

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WHATMAKESFORASUCCESSFULPROTOCOL?

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•  Whythinkaboutthis?•  Somanytechnologydevelopmentsnevergetwidelydeployed,orevenusedatall

•  Yetsomearewildlysuccessful•  RFC5218(Thaler&Aboba)•  I’msureweallalsohavepersonalexperiences

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THEADVICE

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Important initially •  Very positive net value •  Incremental

deployability •  Availability of code,

specs

Less important initially •  Technical design •  Maintenance

Important for wild success •  Extensibility •  No hard scalability limits •  Good enough security


EXAMPLES

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• Wildsuccesses:IP,Web,…• HowaboutIPv6?Lessons?• Failures:many

• E.g.,whydidMobileIPfail?Marketsqueezedfromtwosides,linklayersstartedhiding(most)movements;appslearnedtonotcareaboutaddresschanges

• ManyQoSdesignsfailed.Lessons?

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Example: IP

Scale

Purpose

IPovereverything,everythingoverIP


WORKINGINORWITHTHEIETF

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•  Youarenotalone:lotofrelatedworkattheIETF:transportevolu;on,iden;fier-baseddesigns+more

•  Simplicityofcleanslateisseduc;ve,buthistorically,changeisevolu;onary;deploymentandco-existencestrategiesareasimportantastheprotocoldesigns

•  IETFwillhappilyworkwithothers;bringproblems!•  Early!•  Realworldissuesfromoperatorsmuchappreciated&debatedfrommul;pleangles

•  Seealsohpps://datatracker.ieq.org/liaison/1502/

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CONCLUSIONS

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•  Takenoteofthechangingtrafficpaperns;5Gneedstomatchtomorrow’straffic

•  Trendformoreencryp;onwillcon;nue,andwillaffectworkformanynetworkop;miza;ons

•  Notepastfailureswithdesignsthatassumelarge-scalecoordina;on(e.g.,QoS)orflagdays

•  Noteverythingwillfly.Dootherswanttoplay?•  ProblemsappreciatedattheIETF,bringthem!Early!•  Whatcanwealldotohelpmake5Ganinnova;onengineandspeedupevolu;oninthenetwork?

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5g and the evolution of internet protocols...2017/04/06 · etsi summit 4 5g network infrastructure...

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