homeplug green phy

8/2/2019 HomePlug Green PHY

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HomPug® Gr PHYOvrvi

Ji Zyn, A Cnicain

A t h e r o s t e C h N I C A L P A P e r – P u b L I C A t I o N D A t e 5 / 2 0 1


http://slidepdf.com/reader/full/homeplug-green-phy 2/16homePLug® greeN PhY overvIew

© 2010 y A Cnicain, Inc. All i d.

All i d. A®, A Din®, Alin®, A Xr®, Diin wil F®, Inlln®, N N wi®, oin® , PLC4tck®, Ppack®, spad spc Cai®, ssC®, roC®, sp A/g®, sp g®, sp N®, t Ai i Clan a 5-ghz®, tal 802.11®, u-Na®, wak n wil®wil F. unlad N.®, and XsPAN®, a id y A Cnicain, Inc. Asst™, sinal-sain tcnly™, e™, Inall N g™, IQue™, roC™, ap™, sipli-Fi™, t ih™, u-map™, u-ta™, and 5-uP™ a adak A Cnicain, Inc. t A l

i a id adak A Cnicain, Inc. All adak a ppy ipci ld.

sjc can i nic.

Nict inain in i dcn a n cally id and i lid acca. Nnl, i dcn i jc can i nic, and A Cnicain, Inc. (A)a n pniiliy any inaccaci a ay cnaind in i dcn, and ak ncin pda kp cn cnaind inain, niy a pn anizain any pda. A i ak can, a any i, in d ipliailiy, ncin din and ap pply pdc pil. A d npn a pdc dcid in a pan ininn any id payi.

N pa i dcn ay pdcd, adapd anid in any y any an,lcnic canical, any pp, xcp a xply in a in an indy A. A i alia ay a pan pndin pan applicain, adakcpyi, akk i inllcal ppy i a apply ida, aial andinain xpd in. N licn c i i pidd xcp a xply in a

in an ind y A.

Atheros mAKes No wArrANtIes oF ANY KIND wIth regArD to the CoNteNt oF thIs DoCumeNt. INNo eveNt shALL Atheros be LIAbLe For DIreCt, INDIreCt, sPeCIAL, INCIDeNtAL sPeCuLAtorY orCoNseQueNtIAL DAmAges ArIsINg From the use or INAbILItY to use thIs ProDuCt or DoCumeNtAtIoN, eveN IF ADvIseD oF the PossIbLItY oF suCh DAmAges. IN PArtICuLAr, Atheros shALL NothAve LIAbILItY For ANY hArDwAre, soFtwAre, or DAtA trANsmItteD or otherwIse useD wIth theProDuCt, INCLuDINg the Costs oF rePAIrINg, rePLACINg, INtegrAtINg, INstALLINg or reCoverINgsuCh hArDwAre, soFtwAre or DAtA. Atheros sPeCIFICALLY DIsCLAIms the ImPLIeD wArrANtIes omerChANtIbILItY AND FItNess For A PArtICuLAr PurPose As theY mIght otherwIse APPLY to thIsDoCumeNt AND to the IDeAs, mAterIAL AND INFormAtIoN eXPresseD hereIN.


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Table O COnTenTs

1.0 INtroDuCtIoN 4

2.0 A QuICK LooK At homePLug Av 5

2.1 hPl Av PhY 5

2.1.1 Adapi bi Ladin and tn map 6

2.2 hPl Av mAC 7

2.2.1 Cnal Cdina 7

2.2.2 CsmA and Cannl Acc Piiy 8

3.0 homePLug greeN PhY 9

3.1 hPl gP Pyical Lay 9

3.1.1 QPsK . 1024 QAm 10

3.1.2 robo md 11

3.2 hPl gP mAC 11

3.2.1 Diid bandid Cnl 12

3.2.2 P sa md gn PhY 13

3.2.3 Pev Aciain 14

4.0 CoNCLusIoNs 15

5.0 ACroNYms 16



1 . 0 I n T R O D U C T I O n

t hPl Plin Allianc lad a n pcicain dinad hPl gn

PhY (hPl gP). t n hPl gP pcicain p lin cnicain

a dlpd pcically iliy indy qin sa gid applicain.

hPl gP i cplly inpal i hPl Av and Ieee 1901 andad.

t hPl gP pak PhY a 10 mp pid apl andid cn and

sa gid applicain. A a i, hPl gP dcd cplxiy and l

p cnpin — ic a nial qin. t hPl gP pcica-

in dci PhY and mAC lay and i a diai ily ccl hPl

Av (hPAv) pcicain, adpd y Ieee a alin cnly i 1901 plin

andad.

sain an ya a, iliy indy an lkin a PLC cnly cpln xiin il cnli sa gid applicain iin and in.hPAv d andin liailiy and ca, iliy indy al qid l pcnpin and dcd c pin. wil 200 mp pak PhY a hPAv a ipi, i iiply n qid sa gid applicain.

igur 1: HomPug Gr PHY Trgt smrt Grid app o Hom ar ntor



In , hPl Allianc ad nd a an dcin c and p cn-pin il ainainin hPAv/P1901 inpailiy, liailiy and ca. I a allynial aan a hPl gP dic ld n adly ac adand ic ca IPtv and id diiin a a alady in ppd y hPAv. t hPl gP pcica-in a dlpd pcically pp sa gid Applicain n h Aa Nk (hAN)iin c pi. hPl gP i n ad a ackal n cpi and iliy inac. N cnli a alady in plac ic ack-al qin.

t hPl gP pc i l an n ya ddicad k y hPl sa eny tcnical wkin gp. t i , hPl gP all jci and qin y iliy indy. I i a ipl pl xnin hPAv a apl andid cn and sa gid applicain.

2.0 a QUICk lOOk aT HPaV

In d lay ndain dciin hPl gP, i’ ncay ifyaiz ky ai cnly ic i i did — naly hPAv.t hPAv pcicain incld mAC and PhY lay, ic a dcid in i cin.hPAv i cplly inpal i Ieee 1901 oFDm andad. t llin dcipin hPAv pcicain i ncaily aidd. epai i placd n apc hPAvpcicain a did y hPl sa eny tcnical wkin gp ca hPl gP pcicain.

2.1 HPaV PHY

igur 2: ky attriut o HPaV PHY

hPAv a a inal andid 28 mhz and pa n xiin p lin in a qncyan 2 mhz 30 mhz. t hPAv PhY i ad n onal Fqncy Diiin mliplxin(oFDm), ic dii inain an any clly pacd naand cai a ann a in adand cai. Ky PhY paa a aizd in Fi 2.

2 mhz 30 mhz

oFDm

1155

24.414 khz

bPsK, QPsK, 16 QAm, 64 QAm, 256 QAm, 1024 QAm

Turo cod

ra ½ ra 16/21 (pncd)

RObO:

4 mp 10 mp

adptiv bit lodig:

20 mp 200 mp

spc

mdlain

# scai

scai pacin

sppd caidlain a

Daa FeC

sppd daa a

PHY



igur 3: svr Ditortio C b ecoutrd i Por li eviromt

Any adand inal anid n p lin ill ncn lipa di-in. A na ipli, lipa diin cc ca anid inal can ypically aca ci an n pa. wn inal cin a ci, din ll anain a ncnd a din qnci iin inal paand, a n in Fi 3.N a inal pak and nc can ay y a c a 40 db. ti c i i d a frequency selective fading.

2.1.1 aDaPTIVe bIT lOaDInG anD TOne MaPs

oFDm a lcd a aic dlain c hPAv d i ailiy pidxly panc in pnc qncy lci adin. A n in Fi 3,oFDm cai ndin qncy lci adin can ai a ci a adicallydin inal ll.

hPAv pp adapi i ladin. Adapi i ladin nal ac cai dlad in d aci i pil daa a ad n cid inal n.rin Fi 4, a cai i l cid inal n i pp binay Pasi Kyin (bPsK), ic pid 2-i p cai p yl. A x, acai i y i cid inal n cld pp 1024 QAm, ic pid 10-ip cai p yl.

igur 4: adptiv bit lodig Optimiz Dt Throughput



Adapi i ladin nal y cai in oFDm inal cay a c daa apil in lin cndiin. h, adapi i ladin qi inal n y cai a receiver knn y transmitter pi ndin a pack. A a l,hPAv dic iin a nk pidically xcan ndin pack ainain p--daknld cannl cndiin in n ap.

tn ap dci inal ll ac cai iin oFDm inal. t a1155 cai in hPAv inal. A n ap cd inal n a ci a inlink. F, cnicain cannl n any dic in an Av Lical Nk, AvLN(anal a baic sic s in 802.11 nk), i niq. eac hPAv clin ainain acn n ap y dic in a nk a i acily cnica i.

In an AvLN cniin N dic, ac hPAv ain ld a ainain p N-1cn n ap. F xapl, i an AvLN cni 25 dic, ac clin ld a ainainp 24 cn n ap. ti ily indc a inican d cplxiy. h, lial i pd id diiin a PhY a p 200 mp, adapi i ladin i nq-inaly appac aailal n p lin. F l a applicain c a sa gid,cnidal iplicain i pil.

2.2 HPaV MaC

t hPAv mAC Cai sn mlipl Acc (CsmA) a aic anday cannl acc c. ti Dain mlipl Acc (tDmA) i ppd a an pinal a.

2.2.1 CenTRal COORDInaTOR

eac AvLN i cnlld y n dic in nk a pa a a Cnal Cdina(CC). t CC pidically ani acn yncniz nk AC lin cycl and diina anan a. A n in Fi 5, acn inal i AC lin cycl(33.3 c @ 60 hz 40 c @ 50 hz).

igur 5: HPaV bco aig ntor ith aC li Cyc

t acn i anid iin a bacn rin a idialy ll y cndpii z-cin AC lin cycl. N a acn inal ill accda al acn. ti i ncay ca in inanc, lipl AvLN can iin ain an ac . t bacn rin all lipl acn anid i clliin.

ey hPAv clin can ac a a CC. I a CC i d nk, any aininclin can a l CC. wn i cc, lcin clin al ac a CC iad n a p-dnd lcin ciia.



2.2.2 CsMa anD CHannel aCCess PRIORITY

hPl Av Cai sn mlipl Acc (CsmA) a aic cannl acccani. In addiin, hPAv pp din Cannl Acc Piii: CAP3 (i piiy CAP0 (l piiy) pid i Qaliy sic (Qs) lancy-nii applicainc a id diiin.

CsmA i n dcid a “lin--alk”. b aniin a daa pack, acdic ni nk. I an dic i alady aniin, dic d

aniin nil lin c idl. wn di c idl, nk ain l i piiy ll pndin ac any indiidal ain can acc di daa aniin. ti i accplid din Piiy rlin Pid, ic cni Piiy rlin sl (Prs0 and Prs1).

igur 6: HPaV bco aig ntor ith aC li Cyc

Din piiy lin, ain ani Piiy rlin syl (Prs) ad n piiy qd ac in accdanc i Fi 7. All nk clin ni din n aniin. A ain cnndin di acc a CAP3 CAP2 ld ani dinPrs0, cain ain cnndin a CAP1 CAP0 d. A ain cnndin a CAP3 ld alani in Prs1, cain ain cnndin a CAP2 d. onc i pc i cpl, all ain a aa i piiy pndin ac.

igur 7: PRs Trmiio schdu

Idialy llin Piiy rlin, all ain i qd ac a iCannl Acc Piiy ill cnnd di. I i qi pil a n lin cidl, al clin cld aiin ani. I all dic anid a a, packclliin ld cc. t, ac clin paicipain in a CsmA nk cnain a pd-an-

d ack- cn.

wn lin c idl, clin i pndin daa ac d Not ani idialy.Inad, ac clin in dcnin an innal cn a a iniially a pd-andn iin a pcid an. wn innal cn ac z, a clin ay in daa aniin. In i ann, clliin ill cc nly i ain ad a ack- cn inn lin ca idl. I an clin in pack aniin innal cnac z, cn i ld a dcnd al nil di c idl aain.



3.0 HOMePlUG GReen PHY

t in dicin hPAv a ncay ndk. hPl gn PhY idid nily hPAv. A xplaind in a dail in aind i cin, hPlgP i cplly inpal i hPAv and Ieee P1901. hPl gP and hPAv dic can i n n nk.

3.1 HOMePlUG GP PHYsICal laYeR

hPl gP i cplly inpal i hPAv/P1901. homePLug gP aqncy and (2 mhz 30 mhz), aic dlain c (oFDm), and Fad e Ccin(t Cd). Fi 8 a cpain hPl gP and hPAv/P1901 PhY paa. Na hPl gP PhY a aj iplicain.

igur 8: HomPug GP PHY simpifctio Rduc Cot & Por Coumptio

on i dinc n hPAv and hPl gP i pak PhY a. hPAvpp a pak PhY a 200 mp, ic i iply n qid sa gid applicain. badn xni dicin i iliy indy, i a land a ca and liailiy paan cnidain. Pak daa a cld dcd, ic in n ld all dcinin c and p cnpin.

hPl gP pp a pak PhY a 10 mp. ti i l ky iplicain:

1. ricin oFDm cai dlain xclily QPsK

2. ricin daa a ppd y robo d, y liinain nd adapi i ladin and anan n ap.

t a nial ad nalin l c, l p dic a inpai hPAv/P1901 il ainainin a ca and liailiy.

Prmtr

spc

mdlain

# scai

scai pacin

sppd caidlain a

Daa FeC

sppd daa a

PHY

HomPug aV

2 mhz 30 mhz

oFDm

1155

24.414 khz

bPsK, QPsK, 16 QAm, 64 QAm,256 QAm, 1024 QAm

t cd

ra ½ ra 16/21 (pncd)

robo:

4 mp 10 mp

Adapi bi Ladin:

20 mp 200 mp

HomPug GP

2 mhz 30 mhz

oFDm

1155

24.414 khz

QPsK nly

t cd

ra ½ nly

robo:

4 mp 10 mp



3.1.1 QPsk Vs. 1024 QaM

In d aci a 200 mp pak PhY a, hPAv xpli y i d QadaAplid mdlain (QAm). t oFDm inal cni 1155 cai, ic 917 a daaain iin 2 mhz 30 mhz and. hPAv pp dlain cnllain bPsK 102QAm. In cpain, hPl gP QPsK xclily a n in Fi 9 l.

igur 9: HomPug GP U QPsk Oy

by icin dlain QPsK, hPl gP dic cann ac pak PhY a hPAv. h, sa gid applicain d n qi a daa a a qid id diiin. t pak PhY a 10 mp hPl gP i aily al pp cnlyniind sa gid applicain and ill pid apl capaciy -pn. A 10 mp,hPl gP i appxialy 1000X a an cpin PLC cnli c a PrIme g3,ic pa a l qnci (<500 khz).

igur 10: HomPug GP U lo Compxity QPsk Modutio excuivy

A dpicd in Fi 10, QPsK i a c ipl dlain an 1024 QAm.

by akin xcli QPsK cai dlain, anal n nd and lin diqin (linaiy and cn lin) a nin. A a l, hPl gP dicld al aci a i ll inain, pily incldin inl-cip acic,ic ill lp dc c and pin.

sucrrir Modutio

bPsk

QPsk

16 QaM

64 QaM

256 QaM

1024 QaM

bit/sucrrir symo

1

2

4

6

8

10

HPaV

√

√

√

√

√

√

HomPug GP

√


http://slidepdf.com/reader/full/homeplug-green-phy 11/16Atheros CommuNICAtIoNs 5/2010

3.1.2 RObO MODes

r oFDm (robo) d i a pa cdin a i d pp l a / i liailiy daa aniin in hPl qipn. rin Fi 11, robo d i d pp daa a 4 mp 10 mp. t daa a a ppd y hPAv andhPl gP, ic acilia inpailiy.

In robo d, inain i anid dndanly n lipl cai. All p-pd robo d daa a (4 mp, 5 mp, and 10 mp) QPsK dlain n all cai

and a ½ t Cd FeC. Daa a i dind y d pa cdin plyd.

igur 11: RObO Mod Dt Rt Dpd o Dgr o Rpt Codig

u pa cdin ily indc a d incincy, i a inicann. D pa cdin, a inican acin cai in a robo inal can l (i innc qncy lci adin) i cain a pack . robo daniin a pn lial nd lin cndiin. N a, nlikAdapi bi Ladin, robo d d n ly n adancd knld cannl cndiin pi pack aniin. by icin hPl gP dic xclily robo d, i n nd cd ana n ap ac link in nk. ti i a inican iplicain adc y iz and cd pac.

3.2 HOMePlUG GP MaC

t hPl gP mAC i aically a iplid in hPAv/P1901 mAC. t h-Pl gP mAC a a CsmA and Piiy rlin cani a hPAv dcid in scin2.2.2 a. I d n, , pp pinal tDmA cani. D ac a hPl gP PhY d n adapi i ladin, hPl gP mAC d n nd cd ana n ap.

igur 12: Comprio o HomPug GP d HPaV MaC tur

Mod

Mii-RObO

stdrd RObO

High spd RObO

PHY Rt

3.8 mp

4.9 mp

9.8 mp

# Rpt Copi

5

4

2

uctio

Ch acc

CCo cp?

Ch etimtio

bdidth shrig

HomPug aV

CsmA/CA i pinal tDmA

Y

Adapi i-ladin p caiia p-niad n ap

N/A

HomPug GP

CSMA/CA only

Yes

ROBO eliminates need for pre-negotiated tone maps

ROBO eliminates need for pre-negotiated tone maps



t a a a a niq hPl gP mAC. In d n ahPl gP dic ld n adly ac nk p hPAv dic, a niq and-id ain ali a dlpd. A nl p ain cani a addd. Finally, d caacizin inal ll anain a incldd acilia aciain and indin lc-ic icl i cain qipn in plic pakin aa.

3.2.1 DIsTRIbUTeD banDwIDTH COnTROl

hPl gP dic ill icd a 10 mp pak PhY a. gin a -qid mAC p sa gid applicain i <250 kp, i i an adqa. h, ppci a n nk cpid hPAv and hPl gP diccapal ppin id diiin a ll a sa gid applicain, 10 mp i lailyl. A 1500 y en pack qi a c ln aniin i a 10 mp an i da 200 mp.

I hPl gP dic pain in pnc ay hPAv ic id ac al acc di in an ncnaind ann, i i qi pil a hPAv -p cld adly acd. Diid bandid Cnl (DbC) a incldd a a andayln hPl gP pcicain in d n a hPl gP dic ld nadly ipac xiin hPAv ic.

wn ac a CAP3, CAP2, CAP1 i dcd, DbC ill lii aa hPl gPcannl acc i, “ti-n-wi” (tw) appxialy 7%. ti cpnd an c-i PhY a 700 kp (7% tw @ 10 mp) and a mAC p a 400 kp 500 kp,ic pid apl capaciy sa gid applicain. hPl gP clin ni all hPlgP aniin in a 33.3 c lidin ind a idialy pcd any ap cnnd cannl acc. ti i pil ca hPl gP pack a a pcial fa in sa Fa (sF) dlii.

I pndin pack ill ca aa hPl gP tw xcd 7%, hPlgP clin cann cnnd cannl acc and ai an nin cannl acc pp-niy. h, in inanc, lcal di ill n cplly ccpid. hPl gP

dic ay xpli nd tw i icin. ti i accplid y cnndin cannl acc a CAP0. In lii, hPl gP qipn inalld in lcain in ic hPAv qipnin n pn ay ccpy p 100% tw.



3.2.2 POweR saVe MODe OR GReen PHY

rdcd p cnpin i a ciical ac sa gid applicain. A pcial Psa md a n dlpd a ill nal daaic p ain hPl gP dic. Ind cily dci P sa md, xplaind:

1. ake windo: Prid im drin ic dic i capal ranmiin andrciin ram n pr lin. t Aak wind a a ran 1.5 mc 2.1 cnd.

2. sp wido: Pid i din ic dic i n capal ciin an-iin a p lin.

3. Por sv Priod (PsP): PsP i Aak and slp wind. t PsP nlya dic al a a qialn 2n acn pid, p a axi al 210 (1024)acn pid.

4. Por sv schdu (Pss): Pss cny PsP and dain Aak wind.t Aak sa alay cc a innin PsP.

I i nial a all dic pain in P sa md n and xi Aaksa in a cdinad ann. ti n a Aak wind a lappd axi

d pil, nalin cnicain an dic pain in P sa md. In anc c cdinain, hPl gP dic ld aak a din i and ld nal cnica dicly an ac .

igur 13: HomPug GP Por sv Mod achiv Mximum Ovrp o a wido

Atheros CommuNICAtIoNs 5/2010



sain ani a a CC qin piin n P samd. t q a incld Pss. t CC acknld q n P samd and pci acn a qd PsP ill cnc n. rin Fi 13, na PsP i din ac dic. h, all PsP a 2n acn pid in dain. t,ln PsP a alay an in lipl PsP. ti all CC alin aiPsP axi lap Aak wind.

hPl gP P sa md all pciy y ln PsP ai pain PsP l lancy and pn i. rcall PsP a a dain 1 acn pid (33.3 c @ 60 hz 40 c @ 50 hz AC lin cycl) p 1024 acn pid(34.1 c @ 60 hz 41 c @ 50 hz). I a lancy 30 cnd 40 cnd i accpal,hPl gP dic can dc aa p cnpin y 97% lai a dic a i in Aak sa a all i. Dic i lanci j 160 c (2 acn pid @ 50 hz)cld dc p y an 85%.

3.2.3 PeV assOCIaTIOn

Pl-in elcic vicl (Pev) cain i a aj a id applicain. Ln , al i pid an cain Pev a , a k, and in plic pakin aa c aaip and ppin all. unlik a pp, a Pev cain ain (d a elcic vicl

spply eqipn, evse, an ai indy andad p) cld inalld in aaa lack pyical ciy. bca Pev cain in plic aa ill inl cn illin, ili-i and a anac a ndandaly cncnd a a n ciy lad a

igur 14: slaC Procdur ciitt PeV/eVse aocitio

on aa paicla in i Aciain Pl. rin Fi 14, i i qilikly a any Pev and evse ill pain in cl pyical pxiiy in plic pakin aa.I i pil nd cndiin a inal n Pev cld ad y any evse. A pa all in ndakn n - illin, i ill a qin na-ily l ic Pev i pyically cnncd ( aciad i) ac evse.


http://slidepdf.com/reader/full/homeplug-green-phy 15/16Atheros CommuNICAtIoNs 5/2010

In d lialy p Pev/evse aciain, a a calld sinal Ll Ana-in Caacizain (sLAC) a addd hPl gP pcicain. wn sLAC pcd iinkd y an hPl gP clin, i adca a i nacknldd souNDINg pack.sain iin ain an cp aa cid p ac pack and p i ina-in ack a dinad mAC add. ti inain i cpild and ain i ipd cid inal n i idnid.

figure 15: byp Cpcitor Permit signl Trvere Open Chrging Contct

wn a Pev i iniially cnncd an evse, main carin cnac and inal ypa cnac (i inalld) ill pn. N rm Fir 15 a i cnac pn, PLC

dic in evse ni i dircly cnncd Pev. t PLC inal can prpaa pa evse i cnac() pn, nly i a inifcan dr anain. t PLC inal cld al cpln nary carin cal, aain nly i a inifcan dr anain. undr cndi-in, PLC inal rm Pev ill ALwAYs ir a evse ic icl i cnncdan any r PLC nd in nrk. by marin and rprin rcid PLC inal rnamn all ain rciin souNDINg pack, sLAC prcdr can rlialy acilia Pev/evseaciain.

4.0 COnClUsIOns

t hPl gn PhY pcl a dlpd pcically iliy indy

qin sa gid applicain. hPl gP i cplly inpal i hPl Avand Ieee P1901 Da sandad. t hPl gP pak PhY a 10 mp pid apl and-id cn and sa gid applicain. A a i, hPl gP dcdcplxiy and c l p cnpin – ic a nial qin.

hmPl gP dic can pra in mn nrk ddicad smar grid applica-in, r in rn nrk cniin hmPl gP and hPAv/P1901 qipmn. Anmr innain a n incldd in hmPl gP pcifcain. t Dirid bandidCnrl ar nr a hmPl gP qipmn ill n adrly impac i andid ricc a IPtv and id diriin a ar crrnly pprd y hPAv. Pr sa md nalhmPl gP dic xpli AwAKe and sLeeP a rdc ara pr cnmpin y mran 90%. Pev/evse Aciain can al rlialy prrmd y hmPl gP-nald dic y

man sLAC prcdr.

t hPl gn PhY pcicain i an lan lin calln a a niq sa gid applicain. I i a pdc cl cllaain n hPl Allianc, iliy indy, and ail anac. t hPl Allianc i cid cninincllaain i indi n a adand PLC lin cnin l inpn ak–pcic qin.



5.0 aCROnYMs

1901 Ieee 1901

bPsK binay Pa si Kyin

CsmA Cai sn mlipl Acc

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