11 07 2793-00-0vht 60ghz vs 5ghz Propagation Discussion

7/25/2019 11 07 2793-00-0vht 60ghz vs 5ghz Propagation Discussion

1/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

60 GHz vs. 5 GHz Propagatio !isc"ssio

!at#:2007-11-12

$"t%ors:


2/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

&'( Pat% &oss at 60 GHz

For LS condi!ions "a!# loss is mainl$ governed b$ !#e %ree-s"ace"ro"aga!ion %ormula& Some "a"ers #ave re"or!ed %e' dB less "a!# lossand some "a"ers %e' dB more !#an !#e %ree-s"ace %ormula& Fordis!ances u" !o 10m, %or LS condi!ions, i! seems like a reasonableassum"!ion (Friis %ormula)*

1020 log ( +(, ))lP d =

! 1m dis!ance "a!# loss is ./ dB and a! 10m dis!ance !#e "a!# loss is // dB&

S!andard devia!ion o% a""roima!el$ dB 'as re"or!ed in !#e li!era!ure !#a! accoun!s %or s#ado'ing& margin due !o

s#ado'ing #as !o be added i% 03 coverage is !o be de!ermined, %or eam"le& 4#e margin is a %unc!ion o% !#e "a!# losse"onen! and s!andard devia!ion&


3/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

)&'( Pat% &oss at 60 GHz

Ver$ %e' NLS measuremen!s 'ere made a! .0 68&

9i!# increasing carrier %re:uenc$ losses due !o

di%%rac!ion, re%lec!ion, and ma!erial "ene!ra!ion increase

%or NLS condi!ions&

9#en com"ared !o 68, 'e es!ima!e !#a! !#ese

addi!ional losses are in !#e -10 dB range ;1,2


4/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

*ota+ E,p#ct#d )&'( Pat% &oss at 60 GHz

opar#d to 5 GHz Free s"ace loss is addi!ional 21 dB&

Le!=s assume !#a! addi!ional di%%rac!ion, "ene!ra!ion andre%lec!ion losses are 7 dB&

4#e !o!al addi!ional "a!# loss e"ec!ed a! .0 68 '#encom"ared !o !#e 68 carrier %re:uenc$ ma$ be abou! 2/ dB&

ssuming NLS dis!ance "a!# loss e"onen! o% , !#is!ransla!es in!o communica!ion range (dis!ance) reduc!ion b$ a

mul!i"lica!ive %ac!or o% 0&2, i&e* >ange(.0 68) ? 0&2 >ange( 68)&

4#e calcula!ion above does no! include s#ado'ing s!andarddevia!ion, i! includes onl$ median "a!# loss&


5/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

60 GHz )&'( ag# #d"ctio

10 d &oss 15 d 20 d 25 d 30 d

ag#

actor

0.56 0.2 0.31 0.2 0.18

60 GHz copar#d to 5 GHz pat% +oss #,po#t 4 )&'(

Expected additional loss (includes path loss difference, antenna gain and

PA transmit power estimates)


6/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

60 GHz )&'( ag# #d"ctio: otd

10 d &oss 15 d 20 d 25 d 30 d

ag#

actor

0.6 0.32 0.22 0.15 0.1

60 GHz copar#d to 5 GHz pat% +oss #,po#t 4 3 )&'(

Expected additional loss (includes path loss difference, antenna gain and



7/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

60 GHz &'( ag# #d"ctio

10 d &oss 15 d 20 d 25 d 30 d

ag#

actor

0.32 0.18 0.1 0.05 0.03

60 GHz copar#d to 5 GHz pat% +oss #,po#t 4 2 &'(

Expected additional loss (includes path loss, antenna gain and



8/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

P$ Po#r

6iven curren! @ !ec#nolog$ develo"men!s, regula!ions,

and sa%e!$ reasons i! ma$ be e"ec!ed !#a! !#e consumer

grade @s a! .0 68 'ill #ave u" !o 10 dB less "o'er !#a!

!#e ones %or !#e 68 9LN a""lica!ions, %or eam"le(10 m9 vs& 100 m9)&

Some o% !#e lo'er @ "o'er can be com"ensa!ed %or b$

an!enna gain&


9/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

$t#a Gai at 60 GHz a"tio

ig# direc!ivi!$ an!ennas in a sca!!ering environmen! lose gain'#en com"ared !o !#e omnidirec!ional an!ennas& An !#e li!era!ure!#is is regarded as an!enna 6>F (gain reduc!ion %ac!or)&

irec!ive an!ennas am"li%$ onl$ some "ro"aga!ion ra$s, o!#ers area!!enua!ed and !#ere%ore mul!i"a!# com"onen!s are los! !#a! resul!sin a loss o% "o'er, loss o% diversi!$, and reduced rank %or CACs$s!ems !#a! reduces s"a!ial mul!i"leing gains&

mnidirec!ional an!ennas am"li%$ all ra$s evenl$, in mos! cases&

4#ere%ore, in "a!# loss calcula!ions, nominal (adver!ised) an!ennagain de!ermined in an anec#oic c#amber #as !o be reduced b$ 6>F&

A! 'as s#o'n !#a! %or ou!door environmen!s !#e 6>F is signi%ican!(-7 dB %or 20o#ori8on!al an!enna beam'id!# (-5dB beam'id!#

"oin!s))&

Andoor environmen!s e"erience more sca!!ering !#an ou!doorenvironmen!s "o!en!iall$ resul!ing in larger 6>F& >e:uires %ur!#erinves!iga!ion&


10/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

&'( !#+a Proi+#s or !i#r#t $t#a

#aidt%s at 60 GHz

With decreasing antenna beamwidth LOS component is amplified and reflected

components are attenuated b the antenna pattern !"#$

%x Omni Antenna

&x Omni Antenna

%x Omni Antenna

&x '

o

Antenna

%x Omni Antenna

&x

o

Antenna

d*+ d*

" d*


11/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

+oc;ag# E#cts

A% !#e LS com"onen! is blocked b$ a "erson, %or eam"le, i!'as re"or!ed in !#e li!era!ure !#a! u" !o 20 dB o% signal "o'ercan be los! ;,


12/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

+oc;ag# E#cts: otd

4o avoid large signal "o'er loss in !#e case o% !#e direc!LS "a!# blockage, es"eciall$ in !#e direc!ional an!ennacase, ada"!ive beam an!ennas ma$ be "re%erable&

A! is no! clear #o' !#e ada"!ive beam an!ennas 'ould"er%orm '#en com"ared !o !#e omnidirec!ional an!ennas in!#e case o% a blockage&

A% !#e #ig# reliabili!$ link is !o be e"ec!ed, !#e blockagescenario #as !o be care%ull$ considered and solu!ion %ound

in order no! !o break !#e communica!ion link& Dlosel$ s"aced mul!i"le !ransceivers ma$ mi!iga!e

s#ado'ing "roblem, bu! a! !#e #ig#er cos! and com"lei!$&


13/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

!isc"ssio

4o ge! be!!er #andle on .0 68 "ro"aga!ion !#e %ollo'ingim"or!an! measuremen!s s#ould be "er%ormed !#a! aremissing in !#e re"or!ed and "ublis#ed resul!s*

NLS measuremen!s (ver$ %e' 'ere re"or!ed)&

6>F - omni vs& direc!ional an!enna measuremen!s&

iversi!$, CAC measuremen!s - as a ne! s!e"&


14/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

!isc"ssio/oc+"sio

.0 68 %re:uenc$ band ma$ be sui!able %or a""lica!ionslimi!ed !o s#or! range communica!ion, mes#, or dis!ribu!ed(densel$ de"lo$ed) ne!'orks&

.0 68 %re:uenc$ band ma$ no! be sui!able %or a""lica!ions

!#a! re:uire similar range re:uiremen!s and a""lica!ions as/02&11a+b+g+n s$s!ems&

4o cover a regular #ouse a! 2& 68 or 68 %re:uenc$bands one 9LN ccess @oin! ma$ be re:uired, '#ile %or !#esame radio coverage a! .0 68 uni!s ma$ be re:uired (based

on sim"le assum"!ion !#a! >ange(.0 68) ? 1+5 >ange(68))&

ddi!ional measuremen!s and anal$sis s#ould be done a! .068 %re:uenc$ band&


15/15

Novembe

r 2007

VinSlid

doc.: IEEE 802.11-07/2793r0

Submission

##r#c#s

;1< @& F& C& Smulders and L& CA& Dorreia D#arac!erisa!ion o% @ro"aga!ion in .0 68 >adioD#annels, Elec!ronics and Domm& Eng& Gournal, "ril 17, ""& 75-/0&

;2< & Hang, @& F&C& Smulders and C& &&G& erben Andoor D#annel Ceasuremen!s andnal$sis in !#e Fre:uenc$ Bands 2 68 and .0 68, 200 AEEE @AC>D, ""& 7-/5&

;5< 4akes#i Canabe, Huko Ciura, and 4os#io A#ar' E%%ec!s o% n!enna irec!ivi!$ on AndoorCul!i"a!# @ro"aga!ion D#arac!eris!ics a! .0 68, in @roceedings o% AEEE @AC>D, 4oron!o,1, ""& 105-105&

;< I& Sa!o and 4& Canabe Es!ima!ion o% @ro"aga!ion-@a!# Visibili!$ %or Andoor 9irelessLN S$s!ems under S#ado'ing Dondi!ion b$ uman Bodies, Ve#icular 4ec#nolog$Don%erence, Vol& 5, 1/-21 Ca$ 1/, ""& 210 J 2115&

;< S& Dollonge, 6& Ka#aria, and 6& El Kein An%luence o% !#e uman c!ivi!$ on 9ide-BandD#arac!eris!ics o% !#e .0 68 Andoor >adio D#annel, AEEE 4rans& on 9ireless Domm&, Vol&5, No& ., Nov 200&

;.< 4& K'ick, 4& G& Beukema, and & Nam 9ideband D#annel Sounder 9i!# Ceasuremen!sand Codel %or !#e .0 68 Andoor >adio D#annel, AEEE 4rans on Ve# 4ec#nol, Vol& , No&

, Gul$ 200&

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11 07 2793-00-0vht 60ghz vs 5ghz Propagation Discussion