Dr Eetu Prieur- Elisa- HSPA+ vs LTE

Coverage Optimized Mobile B db d S l tiBroadband Solutions: UMTS900 with HSPA

E l ti d LTE1800Evolution and LTE1800

LTE World Summit AmsterdamLTE World Summit, Amsterdam 18.5.2010

Dr. Eetu Prieur, Elisa,

Elisa-Finland in brief

• Founded 1882

• World’s first GSM network launched in 1991

• Revenue in 2009 was EUR 1.5 billion

• The number of personnel is 3 000

3 illi bil b i ti 38% k t h• 3 million mobile subscriptions, 38% market share, market leader (Finland: 5.4M inhabit., 17 per km^2)

• 1.2 million fixed subs (market leader) including 0.5 million ADSL subs (market leader)

• HSDPA 21 Mbps and HSUPA 5.7 Mbps

W ld’ fi t UMTS900 t k l h d i 2007• World’s first UMTS900 network launched in 2007

• LTE license for both 1800 and 2600 MHz in 2010

• Subsidiary in Estonia both for mobile and fixed• Subsidiary in Estonia, both for mobile and fixed

18.5.20102 Dr. Eetu Prieur, Elisa LTE World Summit, Amsterdam

Wireless broadband forecasts: HSPA domination

HSPA mass market: • Big variety of terminals + low cost• Existing networks + evolutiong• Available spectrum + UMTS900• Sufficient user experience so far

3500Subscribers per technology

2000

2500

3000

on

WiMAXLTEHSPA

Source: Informa Telecoms & Media, 500

1000

1500Mill

io

18.5.2010 Dr. Eetu Prieur, Elisa LTE World Summit, Amsterdam3

,WCIS+, June 2009 0

2008 2009 2010 2011 2012 2013 2014

HSPA evolution, theor. max. user speed and carrier capacity

&First downlink deployments & terminals in volume:2009 2010 2011 2012-13 (est.)


=> Much potential with HSPA evolution

1 800 000

Broadband subscriptions in FinlandAll th th MBB 63%

End 2011 MBB overtakes the sum of

1 400 000

1 600 000

DSL 48%

All other than MBB 63% all other broadband technologies

End 2010 MBB overtakes DSL

1 200 000

1 400 000

All other than MBB MBB/

overtakes DSL

800 000

1 000 000 DSLMobile broadbandCable modemFTTBWimax Flash OFDMA

HSPA 37%Reasons for MBB success:• Cheap flat rate prices

400 000

600 000

Wimax, Flash OFDMAFTTHOther

Cable

- 384 kbps = 10 €/month (offer 5€!)- 1 Mbps = 20 €/month- 15 Mbps (full rate) = 35 €/month

200 000

400 000modem 9% • MBB data speeds sufficient

- IPTV requires fixed BB• Mobility

01.7.2007 1.1.2008 1.7.2008 1.1.2009 1.7.2009 1.1.2010 1.7.2010 1.1.2011 1.7.2011 1.1.2012

5 18.5.2010 Dr. Eetu Prieur, Elisa LTE World Summit, Amsterdam

3G mobile data traffic still increasing heavily


Downlink traffic distribution during 27 hours in one GGSN

• Downlink: streaming, peer-to-peer and web browsing each about 30%• Uplink: peer to peer at least 60% web browsing about 10% streaming 5%


• Uplink: peer-to-peer at least 60%, web browsing about 10%, streaming 5%• QoS mechanisms in RAN applied to protect premium users

Comparison of data speeds in Finnish 3G networks• Measurements made by European Communications Engineering (http://www eceltd com)• Measurements made by European Communications Engineering (http://www.eceltd.com)• Drive tests with over 12 000 kilometers in Finland, measurements mainly in the moving car• Download of 50 MB file repeatedly, using 3 USB modems connected to 3 laptops• Car was driven in the main roads inside and outside of 100 cities until 3G coverage was ended• One measurement point is the average of the data speeds in one 100 m X 100 m square

90000

100000

Elisa DNA SoneraMedian speed for operators vary between 1 2 2 2 Mb i i d

60000

70000

80000

m X

100

m

1.2 – 2.2 Mbps in a moving car and including a lot of weak coverage areas

After upgrading BTS transmission to

30000

40000

50000

uare

s of

100

m Ethernet (preferably 50 Mbps) the main remaining bottleneck is the air interface and related coverage issues

0

10000

20000

Squ

0>250 >500 >750 >1000 >1250 >1500 >1750 >2000 >2250 >2500 >2750 >3000 >3250 >3500 >3750 >4000

Cumulative data speed [kbps]18.5.20108 Dr. Eetu Prieur, Elisa LTE World Summit, Amsterdam

ADSL l

HSPA+ offers enormous network capacityADSL analogy:• ADSL 2010: 500 000 homes, BH-traffic 35 Gbps 70 kbps/home• Assume similar mobile data usage: 70 kbps/user (20 GB/month/user)Assume similar mobile data usage: 70 kbps/user (20 GB/month/user)• Assume 1000 subs/BTS BH-traffic 70 Mbps/BTS• HSPA+ capacity in loaded network about 8 Mbps/sector

Heavy assumption!

3+3+3 configuration HSPA+ base stations would be sufficientRemarks: • 1000 subs/BTS is a relatively high value especially outside urban areas• 1000 subs/BTS is a relatively high value, especially outside urban areas• Fixed broadband takes much of the traffic load + possible offload to LTE• Quality of service (QoS) can help manage the traffic loady ( ) p g• BTS transmission capacity: possible bottleneck, Ethernet is the only choice!

=> HSPA+ network capacity satisfies most traffic predictions for the coming years. HSPA network capacity satisfies most traffic predictions for the coming years.In many cases the most critical issue is the coverage.


Demand for HSPA coverage everywhere

• Customers getting more and more dependent on the internet access

• Mobility getting increasingly importantMobility getting increasingly important• Increasing demand to have HSPA

coverage everywhere, also rural areas • (Mobile) internet used mostly indoors• (Mobile) internet used mostly indoors• Comparison to GSM voice service: it’s

needed everywhere

=> HSPA (or mobile internet) should work everywhere!

• UMTS2100 and other high spectrum technologies have tough business case

• UMTS900 suits here very well!


Why UMTS900 (or HSPA at 900 MHz)?

In principle, only for one reason:

• Network costs for HSPA coverage at 900 MHz can be only about thi d d t th t f HSPA t 2100 MHone third compared to the costs for HSPA coverage at 2100 MHz

• Especially attractive for rural area HSPA coverage

Other reasons:

• Better indoor coverage in urban areas (10 .. 20 dB)

• Possible to reuse existing GSM900 sites and infrastructure => relatively easy rollout for an existing GSM900 operator ( i ll GSM i d 1 Mb d(typically GSM voice coverage area corresponds to 1 Mbps data coverage area for UMTS900)


Coverage Impact of the Spectrum

Mobile network costs areMobile network costs are proportional to the number of sites => larger coverage area means less costs


means less costs

Elisa 3G coverage 2007-20101Q/2007 2Q/2010

= UMTS900= UMTS2100

3 times more UMTS2100 sites compared to UMTS900 sites.

Still UMTS900Still UMTS900 has much larger coverage area.

18.5.201013 Dr. Eetu Prieur, Elisa LTE World Summit, Amsterdam

Field Experience of UMTS900Item under analysis Expected performance Verified

Coverage area compared to UMTS 2100 MHz 3 times larger 3...5 times largerUMTS 2100 MHz g g

Indoor coverage compared to UMTS 2100 MHz 10..20 dB better Verifiedto UMTS 2100 MHz

Required spectrum 4.2 MHz enough for UMTS900 Verified

Co-existence with GSM900 No significant interference Verified

HSPA throughput at Doubled More than doubledUMTS2100 MHz cell edge Doubled More than doubled

1 Mbps coverage area for UMTS900

Similar to voice coverage area for GSM900 Verified


UMTS900 for GSM900

≥ 14 networks, refarming ≥ 24 countries, devices ≥ 300 UMTS900 deployment status Refarming statusUMTS900 deployment statuswww.gsacom.com

Refarming statuswww.gsacom.com

321 UMTS900 devices

dannounced (GSA 7.4.2010). Number more

than doubled in 9 th


9 months.

900 MHz Allocation and Refarming in Finland11 4 MH 57 GSM i t (DNA 58)• 11.4 MHz or 57 GSM carriers per operator (DNA 58)

• Each operator has allocated UMTS900 carrier in such a way that 2nd UMTS carrier can be activated later without moving 1st carrier.

2nd carrier assumes that GSM900 traffic must be very low We can have max 16 GSM carriers– 2nd carrier assumes that GSM900 traffic must be very low. We can have max 16 GSM carriers together with 2xUMTS, which implies max GSM 1+1+1

– the use of AMR HR and 1800 MHz makes refarming easier (later possibly Orth. Sub Channel)

GSM only

1xUMTS

operator: DNA operator: Sonera operator: Elisa

= DNA

2xUMTS

⇒ Possibility for dual cell UMTS900 = Sonera = Elisa = Current UMTS900 center frequency = Current UMTS900 channel occupancy (4.2 MHz)

= Potential future 2nd UMTS900 carrier (4.2 MHz)

⇒ Theor. max. peak bit rate of 84 Mbps, similar speed to LTE using 10 MHz bandwidth which is the assumed case at LTE coverage band (800 MHz or digital


= Guard carrierLTE coverage band (800 MHz or digital dividend)

A possible scenario for terminal penetration in Finland- UMTS900 in practically every 3G terminal => penetration gets very high

Possibility to startPossibility to start closing the GSM network


LTE1800 – promising option for many marketsM i ti ti b t 2X l th LTE2600+ Main motivation: coverage area about 2X larger than LTE2600.

+ Possibility to reuse antenna lines of UMTS2100 or GSM1800. + Possibility to deploy multi-RAN BTS with simultaneous LTE&GSM. + 1800 MHz (ITU band 3) widely available in Europe and APAC. + Not big regulatory issues: 1800 band often technology neutral.

RequiredCoordinated Required spectrum

20 MHz LTE15 MHz LTE 13 8 MHz

18.4 MHz

Coordinated GSM-LTE case+ Spectrum need for full LTE data speed 18.4 MHz

when GSM and LTE base stations at same sites (coordinated case).

15 MHz LTE10 MHz LTE 9.4 MHz

13.8 MHz+ Often easier to refarm than 900 MHz.

• Terminal availability 6-12 months after LTE2600: not a real issue. y• LTE1800 can be estimated to be ready for mass market in 2012 with first

network deployments and terminals in volume.


=> LTE1800: promising and available for mass market in time

Summary

• HSPA can offer sufficient speed and capacity for the coming years. • HSPA service needed everywhere, coverage often an issue.

UMTS900 50 70% f t i l/ b b• UMTS900 saves max. 50-70% of costs in rural/suburban areas. • UMTS900 a proven solution already with 10+ commercial networks. • UMTS900 improves coverage also in urban areas• UMTS900 improves coverage also in urban areas. • Former issues with regulation and terminals practically solved. • Refarming is time consuming but worth the effort. g g• LTE1800 provides 2 times larger coverage area than LTE2600.

=> UMTS900 is a 100% clear go, the focus is now on the details for the most efficient deployment.

=> When LTE needed LTE1800 is a promising option for LTE=> When LTE needed, LTE1800 is a promising option for LTE18.5.2010 Dr. Eetu Prieur, Elisa LTE World Summit, Amsterdam19

Thank You!Thank You!

Dr. Eetu Prieur

eetu prieur@elisa [email protected]


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Dr Eetu Prieur- Elisa- HSPA+ vs LTE

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