Panel&Discussion:& - ieee-vnc. · PDF fileBullets level 2-5 minimum 20 pt ... UMTS/HSPA today Future LTE/HSPA Source: CoCarX, Vodafone D2 projections . Slide title minimum 32 pt (32

2011 IEEE Vehicular Networking ConferenceNovember 14–16, 2011, Amsterdam, The Netherlands


Panel&Discussion:&LTE&vs.&IEEE&802.11p&–&which&technology&to&go&for?&&


Poll&•  Vote&at&hCp://www.ieeeEvnc.org/polls/&&•  Four&QuesHons&

1.  Will&we&use&802.11p&or&LTE&for&safety&applicaHons?&2.  Will&we&use&802.11p&RSUs&or&cellular&networks&for&

connecHng&to&backend&infrastructure?&3.  Which&system&offers&the&beCer&scalability&to&fullE

deployment&scenarios&of&vehicular&communicaHon&systems,&802.11p&or&LTE?&

4.  Which&technology&is&more&mature&and&deployment&ready,&802.11p&or&LTE?&


IntroducHon&of&ParHcipants&•  Falko&Dressler,&University&of&Innsbruck&•  Javier&Gozálvez,&University&Miguel&Hernández&•  Jeffrey&Miller,&University&of&Alaska&•  Erik&Lambers,&NXP&•  Rene&Rembarz,&Ericsson&&

[DSRC/WAVE]&Panel&@&IEEE&VNC&2011& Falko&Dressler&&

4&

Computer)and)Communica/on)Systems)(Lehrstuhl)für)Technische)Informa/k))

DSRC/WAVE)–)a)brief)tutorial)

Falko&Dressler&University&of&Innsbruck&[email protected]&


5&

DSRC/WAVE)

"   WAVE&"   IEEE&1609.1:&“Core&System”&"   IEEE&1609.2:&Security&

TCP / UDP

WAVE PHY

WAVE MAC and Channel Coordination

IPv6 WSMP

Man

agem

ent

Sec

urity

LLC

802.

11p 16

09.4

16

09.3

1609

.2

WAVE PHY

" IEEE&1609.3:&Network&Services&" IEEE&1609.4:&Channel&Management&

[1] Jiang, D. and Delgrossi, L., "IEEE 802.11p: Towards an international standard for wireless access in vehicular environments," Proceedings of 67th IEEE Vehicular Technology Conference (VTC2008-Spring), Marina Bay, Singapore, May 2008

[2] Uzcátegui, Roberto A. and Acosta-Marum, Guillermo, "WAVE: A Tutorial," IEEE Communications Magazine, vol. 47 (5), pp. 126-133, May 2009


6&

IEEE)802.11p)

"   PHY&layer&almost&idenHcal&to&IEEE&802.11a&"   OFDM&using&16&QAM&"   Reduced&inter&symbol&interference&

(mulHpath&effects&and&Doppler&shij)&"   Doubled&Hming&parameters&"   Channel&bandwidth&(10&MHz&instead&of&20&MHz)&"   Reduced&throughput&(3&...&27&Mbit/s&instead&of&6&...&54&Mbit/s)&"   CommunicaHon&range&of&up&to&1000&m&"   Vehicles’&velocity&up&to&200&km/h&

"   MAC&layer&with&extensions&to&IEEE&802.11a&"   Randomized&MAC&address&" QoS&(PrioriHes,&see&IEEE&802.11e,&...)&"   Support&for&mulH&channel&and&mulH&radio&"   New&ad&hoc&mode&


7&

IEEE)802.11)Basic)Service)Set)(BSS))

"   New:&802.11&WAVEEmode&"   Main&mode&for&all&WAVE&nodes&"   Suggests&the&use&of&“WildcardEBSS”&in&transmiCed&packets&"   Every&node&is&required&to&receive&all&packets&using&a&wildcard&BSS&"   Inherently&allows&simultaneous&transmission&from&and&to&a&BSS&"   Membership&management&just&by&using&a&BSS&

BSS SSID “A”

BSS SSID “B”


8&

WAVE)BSS)

"   Every&node&is&member&of&at&most&one&WAVEEBSS&

[1] IEEE Vehicular Technology Society, "IEEE 1609.3 (Networking Services)," IEEE Std, April, 2007

Not in WAVE-BSS

In WAVE-BSS

! Application layer service is started ! On-demand-beacon received for known

application ! Application layer service is terminated ! Timeout ! Security error

! Application layer started new service with higher priority ! On-demand-beacon received for known, higher priority application


9&

Access)Control)and)QoS)in)WAVE)

"   Use&of&EDCA&equivalent&to&IEEE&802.11e&EDCA&&"   DCF&E>&EDCA&(Enhanced&Distributed&Channel&Access)&"   DefiniHon&of&four&Access&Categories&(AC)&

"   AC0&(lowest)&to&AC3&(highest&priority)&"   IntroducHon&of&AIFS&(ArbitraHon&InterEFrame&Space)&

"   ACs&define...&" CWmin,&CWmax,&AIFS,&TXOPELimit&(max.&conHnuous&channel&use)&

"   Management&data&are&transmiCed&using&DIFS&instead&of&an&AIFS&

Medium busy Data

Data

Data


10&

Channel)Management)

"   WAVE&uses&a&dedicated&frequency&range&in&the&5.9&GHz&band&"   Exclusive&for&V2V&and&V2I&communicaHon&"   Strictly&regulated&but&no&license&costs&"   In&the&US,&FCC&reserved&7&channels&a&10&MHz&(„U.S.&DSRC“)&

"   1&control&and&4&service&channels&to&be&used&by&applicaHons&

"   In&Europa,&ETSI&reserved&5&channels&a&10&MHz&

…

Critical Safety of

Life

ch 172 5.860GHz

SCH

ch 174 5.870GHz

SCH

ch 176 5.880GHz

Control Channel (CCH)

ch 178

5.890GHz

SCH

ch 180 5.900GHz

SCH

ch 182 5.910GHz

Hi-Power Public Safety

ch 184

5.920GHz

…

[1] ETSI ES 202 663 V1.1.0 (2010-01) : Intelligent Transport Systems (ITS); European profile standard for the physical and medium access control layer of Intelligent Transport Systems operating in the 5 GHz frequency band

SCH

ch 172 5.860GHz

SCH

ch 174 5.870GHz

SCH

ch 176 5.880GHz

SCH

ch 178 5.890GHz

CCH

ch 180 5.900GHz


11&

Channel)Management)

"   Channel&Management&"   Management&and&safety&informaHon&on&the&Control&Channel&

(CCH)&"&single&radios&have&to&switch&to&the&CCH&at&known&Hmes&

"   TwoEway&communicaHon&on&the&Service&Channel&(SCH)&

"   Slot&management&"   SynchronizaHon&using&GPS&"   Standard:&100ms&sync&interval&including&50ms&on&the&CCH&"   Slots&start&with&a&guard&interval&

CCH interval

CCH interval

“SCH” interval

“SCH” interval

[1] IEEE Vehicular Technology Society, "IEEE 1609.4 (Multi-channel Operation)," IEEE Std, November, 2006

t = n × 1s


12&

Applica/on)Layer)

"   CarE2ECar&CommunicaHon&ConsorHum&&&ETSI&TC&ITS&"   Not&defined&by&DSRC/WAVE&

but&frame&formats&are&provided&(e.g.,&WAVE&Short&Messages)&

"   First&applicaHon:&CooperaHve&Awareness&Messages&(CAM)&"   Periodic&beacons&containing&

"   Time&"   Speed&"   PosiHon&"   Heading&"  …&

"   Period&fix&in&the&interval&of&1&to&10&Hz&

Slide title minimum 48 pt

Slide subtitle minimum 30 pt

LTE for vehicular Applications

René Rembarz Automotive competence center Ericsson eurolab, Aachen, Germany


(32 pt makes 2 rows

Text and bullet level 1 minimum 24 pt

Bullets level 2-5 minimum 20 pt

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ĀĀĂĂĄĄĆĆĊĊČČĎĎĐĐĒĒĖĖĘĘĚĚĞĞĠĠĢĢĪĪĮĮİĶĶĹĹĻĻĽĽŃŃŅŅŇŇŌŌŐŐŔŔŖŖŘŘŚŚŞŞŢŢŤŤŪŪŮŮŰŰŲŲŴŴŶŶŹŹŻŻȘș

ΆΈΉΊΌΎΏΐΑΒΓΕΖΗΘΙΚΛΜΝΞΟΠΡΣΤΥΦΧΨΪΫΆΈΉΊΰαβγδεζηθικλνξορςΣΤΥΦΧΨΩΪΫΌΎΏ

ЁЂЃЄЅІЇЈЉЊЋЌЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯЁЂЃЄЅІЇЈЉЊЋЌЎЏѢѢѲѲѴѴҐҐ˜ǽẀẁẂẃẄẅỲỳ№

Do not add objects or text in the footer area IEEE VNC 2011 | Commercial in confidence | November 2011 | Page 14

LTE Technical innovations 1. Improved air interface

– Uplink: SC-FDM – Downlink: OFDM

2. Multi-antenna technology – Diversity – Multi-layer transmission (MIMO) – Beam-forming

3. High spectrum flexibility – Flexible bandwidth – New and existing bands – Duplex flexibility: FDD und TDD

20 MHz 1.25 MHz

TX TX


(32 pt makes 2 rows








LTE car-to-Car delay U

MTS

2009

HS

PA 2011

LTE 2011

AS

WAN

Core

Source: CoCarX measurements


(32 pt makes 2 rows








LTE system capacity ›  Capacity analysis – result summary

– Event-driven messages (DENM): Typical cases can be handled

– Periodic �Here I am� messages (CAM): Not scalable for most cases

› Options to accommodate growing demand – Multicast/Broadcast (MBMS) – Priority for critical services – Complementing low-power cells (HetNets)


(32 pt makes 2 rows








LTE Broadband Coverage

UMTS/HSPA today Future LTE/HSPA

Source: CoCarX, Vodafone D2 projections


(32 pt makes 2 rows








LTE Advanced

Relaying

Enhanced HetNet support

MIMO extensions Up to 4x4 UL and 8x8 DL

Carrier Aggregation Contiguous and Non-contiguous

Spectrum A Spectrum B

Dense deployments Peak data rates


(32 pt makes 2 rows









Will&we&use&802.11p&or&LTE&for&safety&applicaHons?&

•  Will&cellular&networks&/&LTE&delay&be&prohibiHve&for&safety&applicaHons?&


Will&we&use&802.11p&RSUs&or&cellular&networks&for&connecHng&to&backend&infrastructure?&

•  802.11p&networks&might&rely&on&connecHvity&to&backend&systems&for&many&applicaHons&and&security&management.&Is&it&reasonable&to&deploy&a&large&scale&RSU&infrastructure,&given&that&cellular&networks&are&already&there?&


Which&system&offers&the&beCer&scalability&to&fullEdeployment&scenarios&of&vehicular&communicaHon&systems,&802.11p&or&LTE?&

•  Assuming&hundreds&or&thousands&of&equipped&cars&in&a&small&area,&will&LTE&scale&to&such&fullEdeployment&scenarios?&


Which&technology&is&more&mature&and&deployment&ready,&802.11p&or&LTE?&

•  802.11p&has&not&proven&its&reliability&in&really&large&scale,&highEdensity&tests.&How&can&we&be&sure&it&really&provides&a&reliable&communicaHon&system?&

Documents

Panel&Discussion:& - ieee-vnc. · PDF fileBullets level 2-5 minimum 20 pt ... UMTS/HSPA today Future LTE/HSPA Source: CoCarX, Vodafone D2 projections . Slide title minimum 32 pt (32