Upload
gameover
View
47
Download
4
Embed Size (px)
DESCRIPTION
proplsal for lte operation in ulicensed spectrum
Citation preview
Simply Better W ireless.
Proposals for LTE Operation In Unlicensed Spectrum
-
Dave Wright Advanced Technologist Ruckus Wireless
- - -
0 Wi~Fi has seen unprecedented succes.s 0 Simple integration - over 10 Billion Wi-Fi enabled devices => Widespread adoption across virtually every market segment 0 Massive scale with .-v$140B/year economic impact in US
0 LTE is jumping into 5 GHz spectrum 0 LTE-U, LAA-LTE, LWA
Fair sharing is the future
'.""'age 2
\ \ \
RUCl
Uni n d et m F'air Access is critical to protecting Wi~F' i users and services
0 Listen before talk (LBT) is not supported in pre-standard LTE-U proposals CSAT is an optional best effort technique
0 LBT must be mandatory to ensure fair sharing for L E-' &_A ~ Wi-Fi community will lobby for LBT as part of 3GPP standard
0 LWA utilizes 802.11 CSMIA/CA for medium access
;'aqe 3 ~RUCl
L TE-U and LAA-L TE
\ \ LTE \ \
PHY'MAC \ \ L. eel \ \ icens \. '
UE 9aOC)or11na: CecnM .
A.99~11(1:1\ SOttt LTE l> Lll.A. Rx ;lulu:c rit}
LTE PHY1MAC Unlicen!>e
d
What are they? Require a licensed band 'anchor'
,. Unlicensed for opportunistic data boost linked to Small Cell architectures Initially downlink only, uplink to follow
LTEU w/o LBT, CSATtype access (prestandard) , LAA w LBT (Rei 13 proposed standard)
What are the expected benefits? ,, Native Integration to Mobile Core , Improvements in user experience ,. No additional spectrum cost
LTE in Unlicensed Spectrum using 802.11 u Based on PDCP splitting/combining capabilities in LTE
eNB and UE modem 0 eNB and AP enhanced to support "X2-like" interface
for bot h control and data plane forwarding 0 AP also provides Unlicensed Environment informat ion
to eNB as t raffic balancing metric 0 AP encapsulates LTE PDCP datagrams in 802.11 MAC
f rames for t ransmission over t he air 0 Wi-Fi coexistence via 802.ll(CSMA/CA?) 0 3GPP Release 13 Study Item
Paqe 5
"X2 like'~ LTE eNB
' '\. LTE ' PHY/MAC',
UE Supporting: Dual
' '
1 WiFi AP ,' or WLC
1' , 802.11
,' PHViMAC
Connectivity PDCP
Aggregation RUCl
LTE Duty Cycle 5 GHz E-UTRA ( e.19. CSAT) 3.5 GIHz?
LTE LBT 5 GHz E-UTRA (specifics TBO) 3.5 GIHz?
802.11 802.11 5 GHz (CSMA-CA?) 2.4 GHz*
None
3GPP {Rei 13 SI)
3GPP {Rei 13 SI)
Common
Downlink (S,DL)
Rei 1 3 Downlink Future +Uplink
Downlink and Uplink
LTE-U Capable eNB
LAA Capable eNB.
Wi-Fi AP with LWA
arac eri ties o A Licensed Spectrum 'iAnchor'' o Unlicensed/Licensed integration is
at the RAN! stan,dard EPC interlaces
u Ii
Nov: Initial L TE in Unlicensed Spectrum Proposal
Page 7
d
.laMHJirl Series of liai,sons between IEEE and 3GPP on LAA-LTE
Jan: 1 s1 3GPP Workshop 3GPP Approves LWA on L TE in Un licensed Study 1 em (Release 13/ )~C:,~t~un'::l 3GPP Workshop FCC opens LTE -on L TE in Unlicensed IJ/LA.A Public lice or Filings -.r..
3GPP Expected t o ~]F.1ffi>p Approves LAA Jun: 3GPP E~pected lo finalize Release 13 (wi th LAA
St udy Item ~:Release 13 .~ approve LAA Work Item and LWA) T LAAL: E
...
LWA
2014 .A I
.. LTEU Dec: LTE-U Forum announced
11t1e:..iairc V and ors and Operators plan L TE-U Trials
~RUCl
ru 0 Spectrum Sharing highly favored by regulatory agencies 0 Sharing regimes can provide:,
0 Access Flexibility: e.g. 3.5 GHz Incumbent, priority, and general authorized => Frequency Flexibility: e.g. Priority access to 10 MHz paired in various areas 0 Time Flexibility: e.g. Long-term, short-term, or on-demand
0 Sharing regimes require careful coordination 0 3.5 GHz is a high priority for shared access, dense deployments
I
A a s rces
0 Biog series at www.theruckusroom.net
0 Recent Webinars: 0 Dan Rabinovitsj with Qualcomm
http://www. f iercewi re less .corn/off er/apri I ?sou rce=I isti ng 0 Dave Wright with Cablelabs
http://www. wbal'l1iance. com/events/webi nars/ruckus-wi reless-and-wlba-webi nar-2/
RUCl