11 12 0791-03-00ai Reducing Overhead in Active Scanning
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Transcript of 11 12 0791-03-00ai Reducing Overhead in Active Scanning
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8/19/2019 11 12 0791-03-00ai Reducing Overhead in Active Scanning
1/23
doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, HuaweiSlide 1
Reducing Overhead in c!ive "canning#a!e: 2012-07-06
u!hor$:
%a&e ''ilia!ion$ ddre$$ (hone e&ail
Yunsong YangHuawei Technologies
Co., LTD.1010 Telesis C!. S!e 16",San Diego, C# $2121
%ang%unsong&huawei.com
Young Hoon 'won
(higang )ong
'a!suo Yuno*i 'DD+ )DLaboa!oies
-10-10 +idabashi,Chi%oda-*u, To*%o, /aan
1 0-67-621 %uno*i&*ddilabs.3
4iwon 5a* and 'iseon)%u
L4
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8/19/2019 11 12 0791-03-00ai Reducing Overhead in Active Scanning
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, HuaweiSlide 2
)$!rac!
*hi$ docu&en! de$cri)e$ a !echnical +ro+o$al 'or *,ai. In
!hi$ +ro+o$al &e!hod$ are +rovided !o reduce $ignaling
overhead 'or ac!ive $canning during ( di$covery.
Rela!ed $ec!ion$ o' !he "# 12/011r8
– 6. as! ne!wo* discoe%
• 6.1 #c!ie scanning
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, HuaweiSlide
on'or&ance / *,ai (R
on'or&ance 4ue$!ion Re$+on$e
Does !he oosal degade !he secui!% o88eed b% )obus! Secui!% 9e!wo*#ssocia!ion :)S9#; alead% de8ined in 02.11<
9o
Does !he oosal change !he =#C S#5 in!e8ace< 9o
Does !he oosal e>uie o in!oduce a change !o !he 02.1 achi!ec!ue< 9o
Does !he oosal in!oduce a change in !he channel access mechanism< 9o
Does !he oosal in!oduce a change in !he 5HY< 9o
?hich o8 !he 8ollowing lin* se!-u hases is addessed b% !he oosal
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
5o!iva!ion• E6ce$$ive air-!i&e occu+ancy ha$ )een $een a$ a &aor dra)ac 'or
u$ing ac!ive $canning in a high-den$i!y i-i device environ&en! $uch a$
in !he 'a&ou$ *oyo !rain $!a!ion $cenario ;1 2
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
once+! 1 > "i&+li'ied (ro)e Re=ue$! )y
Re'erencing !o a Received (ro)e Re=ue$! 1
• #ue !o (ro)e #elay "5/# and rando& )aco'' &echani$& e!c. an "*
e.g. "*2 &ay receive o!her "*$? (ro)e Re=ue$!$ hile delaying !he
!ran$&i$$ion o' i!$ regular (ro)e Re=ue$!.
• *hen "*2 co&+are$ !he in'or&a!ion in !he received (ro)e Re=ue$!$ !o !he
in'or&a!ion !ha! i! i$he$ !o re=ue$! !o iden!i'y a (ro)e Re=ue$! !ha! i! can u$ea$ a re'erence.
• *hen "*2 $end$ a $i&+li'ied (ro)e Re=ue$! hich incor+ora!e$ !he (ro)e
Re=ue$! received 'ro& ano!her "* e.g. "*1 )y re'erencing !o !ha! (ro)e
Re=ue$! !o !he (.
– The simli8ied 5obe )e>ues! includes a 5obe )e>ues! )e8eence ield o +B,
which coies, e.g. !he Souce #ddess in !he eceied 5obe )e>ues!, as !he
e8eence in8oma!ion. The !age! eciien!:s; o8 !he Simli8ied 5obe )e>ues!
use:s; !he e8eence in8oma!ion !o uni>uel% iden!i8% !he e8eenced 5obe
)e>ues!, which was eceied b% i! ealie.
Slide "
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
once+! 1 > "i&+li'ied (ro)e Re=ue$! )y
Re'erencing !o a Received (ro)e Re=ue$! 2
• ir$! !he ( receive$ a (ro)e Re=ue$! 'ro& "*1.
• *hen !he ( receive$ 'ro& "*2 a $i&+li'ied (ro)e Re=ue$! hich
incor+ora!e$ !he 'ir$! (ro)e Re=ue$! )y re'erencing !o !he 'ir$! (ro)e Re=ue$!.
• *hen !he ( $end$ a (ro)e Re$+on$e a! lea$! !o "*2 con$idering )o!h !he
$i&+li'ied (ro)e Re=ue$! and !he re'erenced (ro)e Re=ue$!:
– The #5 ma% boadcas! a single
5obe )esonse !ha! oides
esonse !o bo!h ST#s 5obe
)e>ues!s o
– The #5 ma% unicas! i! !o ST#2.
Slide 6
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
ra&e or&a! 'or !he "i&+li'ied (ro)e
Re=ue$! 'ra&e• #ue !o a lac o' un-u$ed $u)-!y+e$ 'or &anage&en! 'ra&e$ e reco&&end
!ha! *,ai reu$e$ and &odi'ie$ !he e6i$!ing (ro)e Re=ue$! 'ra&e 'or&a! 'or
!he $i&+li'ied (ro)e Re=ue$!.
– B.g., using !he esence o8 !he 5obe )e>ues! )e8eence +B in !he 8ame
bod% !o indica!e !ha! i! is a Simli8ied 5obe )e>ues!
Slide 7
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
naly$i$ on Overhead
Regular (ro)eRe=ue$! @y!e$
"i&+li'ied (ro)eRe=ue$! @y!e$
=#CHeade
2 2
ame Eod% 100 :i8 S# is used as !hee8eence;
CS
Fehead)educ!ion
9@# G100 E%!es
Slide
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8/19/2019 11 12 0791-03-00ai Reducing Overhead in Active Scanning
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
@ene'i!$
• Reducing !he air-!i&e re=uired !o co&+le!e !he $a&e
nu&)er$ o' (ro)e Re=ue$! and (ro)e Re$+on$e in a high-
den$i!y i-i device environ&en! $uch a$ in *oyo !rain
$!a!ion $cenario )y !aing advan!age o' o!her?$ (ro)e
Re=ue$!$ or (ro)e Re$+on$e$. *hu$
– )educing lin* se!u !ime
– #llowing moe ST#s !o access !he #5 8o seices
– Saing !he ai-!ime 8o eal !a88ic a%load and boos!ing da!a
!houghu!s in bus% #5s – +moing oeall use eAeience
• "i&+le 5 $!andard change$
Slide $
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
4 - 1
• 4: Ao doe$ a IB"-ca+a)le "* no !ha! !he !arge!
( i$ IB"-ca+a)le )e'ore i! decide$ !o !ran$&i! a
$i&+li'ied (ro)e Re=ue$!C
• : *he IB" #i$covery 'ra&e can +rovide !he
indica!ion !ha! !he !arge! ( i$ IB"-ca+a)le e.g.
u$ing ei!her !he +re$ence o' !he IB" #i$covery 'ra&e
or a 1-)i! ca+a)ili!y )i! in !he IB" #i$covery 'ra&e.
Slide 10
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8/19/2019 11 12 0791-03-00ai Reducing Overhead in Active Scanning
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
4 - 2
• 4: Ao long doe$ a non-( "* or an ( need !o
&e&oriDe !he (ro)e Re=ue$! received in !he +a$!C
• : "ince !he goal i$ !o co&+le!e !he ini!ial lin $e!u+
i!hin 100&$ec a &a6i&al !i&er value hich $hould
)e &uch le$$ !han 100&$ec can )e $+eci'ied in 11ai
a&end&en! $uch !ha! a IB"-ca+a)le "* $hall no!
re'erence a (ro)e Re=ue$! !ha! i$ received earlier !han
!hi$ &a6i&al !i&er value. *he ( are no! re=uired !o&e&oriDe any (ro)e Re=ue$! 'ra&e$ !ha! are received
earlier !han !hi$ &a6i&al !i&er value.
Slide 11
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
4 - 3
• 4: ha! i' !he ( doe$n?! receive !he re'erence (ro)e
Re=ue$!C
• : *he ( &ay $!ill $end a regular (ro)e Re$+on$e.
Slide 12
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
"!ra (oll 1
• #o you $u++or! !ha! a IB"-ca+a)le "* &ay $end a
$i&+li'ied (ro)e Re=ue$! )y re'erencing !o ano!her "*?$
(ro)e Re=ue$! !ha! a$ received earlier !here)y re&oving
!he redundan! in'or&a!ion ele&en!$ !ha! are already in
!he re'erenced (ro)e Re=ue$! 'ro& !he $i&+li'ied (ro)e
Re=ue$!C
e$: 2F
%o: 9
)$!ain: F
Slide 1
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
"!ra (oll 2
• #o you $u++or! u$ing !he $ource addre$$ " in !he
re'erenced (ro)e Re=ue$! a$ !he re'erence in'or&a!ion in
!he (ro)e Re=ue$! or !he $i&+li'ied (ro)e Re=ue$! )a$ed
on hich !he ( &ay $end !he (ro)e Re$+on$e in a
)roadca$! &annerC
e$: 2F
%o: 8
)$!ain:
Slide 1
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
5o!ion 1
• 5ove !o add !he 'olloing !e6! !o G"ec!ion H.1 c!ive
$canning in !he *,ai "# 12/011r8:
GH.1.10 "i&+li'ied (ro)e Re=ue$!
IB"-ca+a)le "* &ay $end a $i&+li'ied (ro)e Re=ue$!
)y re'erencing !o ano!her "*?$ (ro)e Re=ue$! !ha! a$
received earlier !here)y re&oving !he redundan!
in'or&a!ion ele&en!$ !ha! are already in !he re'erenced
(ro)e Re=ue$! 'ro& !he $i&+li'ied (ro)e Re=ue$!.
• 5over:
• "econder:
• Re$ul! e$ %o )$!ain
Slide 1"
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
5o!ion 2
• 5ove !o add !he 'olloing !e6! !o G"ec!ion H.1 c!ive
$canning in !he *,ai "# 12/011r8:
GH.1.11 *riggering !he )roadca$!ed (ro)e Re$+on$e !ran$&i$$ion
*he $ource addre$$ " o' !he "* !ha! $en! !he re'erenced (ro)e
Re=ue$! &ay )e included in !he (ro)e Re=ue$! or $i&+li'ied (ro)eRe=ue$!. *he ( &ay )roadca$! !he (ro)e Re$+on$e )a$ed on !he
!riggering re'erence in'or&a!ion i.e. !he $ource addre$$ o' !he "*
!ha! $en! !he re'erenced (ro)e Re=ue$! .
• 5over:
• "econder:
• Re$ul!
• e$ %o )$!ain
Slide 16
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
Re'erence$
;1< IEEE 802.11-11/1031r0 air-!i&e-con$u&+!ion-)y-
)eacon-and-+ro)e.
;2< IEEE 802.11-11/1F13r3 real-air-!i&e-occu+a!ion-)y-
)eacon-and-+ro)e.
;3< IEEE 802.11-12/011r8 +ro+o$ed-$+eci'ica!ion-
'ra&eor-'or-!gai.
;F< IEEE 802.11-12/00rH +ro)e-re$+on$e-)roadca$!ing.
Slide 17
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
++endi6
Slide 1
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
once+! 2 > "i&+li'ied (ro)e Re$+on$e )y
Re'erencing a (ro)e Re$+on$e "en! Earlier 1
• *he ( 'ir$! $end$ a regular (ro)e Re$+on$e 'ra&e in re$+on$e !o a (ro)e
Re=ue$! $en! )y an "* e.g. "*1.
• *hen in re$+on$e !o a (ro)e Re=ue$! he!her i! i$ $i&+li'ied or no! 'ro&
ano!her "* e.g. "*2 !he ( $end$ a $i&+li'ied (ro)e Re$+on$e !o "*2 )y
re'erencing !o !he regular (ro)e Re$+on$e !ha! a$ $en! earlier a$ long a$ !he
( no$ !ha! "*2 i$ li$!ening !o !he regular (ro)e Re$+on$e e.g.
– The #5 eceies !he 5obe )e>ues! 8om ST#2 immedia!el% be8oe i! sends ou!
!he egula 5obe )esonse o
– The second 5obe )e>ues! is a simli8ied 5obe )e>ues! !ha! e8eences !o !he
8is! 5obe )e>ues!, indica!ing !ha! ST#2 mus! be awa*en and lis!ening !o !he
channel since i! eceies !he 8is! 5obe )e>ues!.
Slide 1$
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
once+! 2 > "i&+li'ied (ro)e Re$+on$e )y
Re'erencing a (ro)e Re$+on$e "en! Earlier 2• *he $i&+li'ied (ro)e Re$+on$e include$ a (ro)e Re$+on$e Re'erence ield or IE
hich co+ie$ e.g. !he "e=uence on!rol nu&)er in !he (ro)e Re$+on$e !ha! i$
$en! earlier a$ !he re'erence in'or&a!ion.
– The !age! eciien!:s; o8 !he Simli8ied 5obe )esonse use:s; !he e8eence
in8oma!ion !o uni>uel% iden!i8% !he e8eenced 5obe )esonse, which was
eceied b% i! ealie.
Slide 20
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
"!ra (oll 3
• #o you $u++or! !ha! a IB"-ca+a)le ( &ay $end a
$i&+li'ied (ro)e Re$+on$e )y re'erencing !o ano!her
(ro)e Re$+on$e !ha! a$ $en! earlier !here)y re&oving
!he redundan! in'or&a!ion ele&en!$ !ha! are already in
!he re'erenced (ro)e Re$+on$e 'ro& !he $i&+li'ied (ro)e
Re$+on$eC
e$:%o:
)$!ain:
Slide 21
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
"!ra (oll F
• #o you $u++or! u$ing !he "e=uence on!rol nu&)er in !he
re'erenced (ro)e Re$+on$e a$ !he re'erence in'or&a!ion in
!he $i&+li'ied (ro)e Re$+on$eC
e$:
%o:
)$!ain:
Slide 22
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doc.: IEEE 802.11-12/0791r3
Submission
July 2012
Yunsong Yang, Huawei
5o!ion 3
• dd !he 'olloing !e6! !o G"ec!ion H.1 c!ive $canning
in !he *,ai "# 12/011r8:
GH.1. "i&+li'ied (ro)e Re$+on$e
( &ay $end a $i&+li'ied (ro)e Re$+on$e )y re'erencing !o
a regular (ro)e Re$+on$e !ha! a$ $en! earlier !here)y
re&oving !he redundan! in'or&a!ion ele&en!$ !ha! are
already in !he re'erenced (ro)e Re$+on$e 'ro& !he
$i&+li'ied (ro)e Re$+on$e.
• 5over:
• "econder:
• Re$ul! e$ %o )$!ain
Slide 2