lte huawei
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www.huawei.com
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Security Level:
HUAWEI TECHNOLOGIES CO., LTD.
LTE for Claro
Jan Berglund
Wireless Marketing Director
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Contents
Spectrum usage for Claro
LTE in a SRAN perspective
Interworking
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Proposed Claro spectrum layout
LTE Data Overlay
Smartphone
Capacity
Voice Coverage
850MHz: 5 +5 MHz UMTS
2013 2014 2015
U850
Smartphone
Coverage
Voice Capacity
Page 3
2015
1900MHz: 17.5MHz GSM -> 5+5U + 7.5G
850MHz: 2.5MHz GSM G850
Indoor coverage layer
3G Coverage Layer
Legacy voice capacity layer and new data capacity
AWS B4: 20MHz Urban LTE Capacity
LTE Capacity Layer
LTE AWS
G1900 GU1900
APT700 : X MHz LTE Coverage LTE
APT700
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Contents
Spectrum usage for Claro
LTE in a SRAN perspective
Interworking
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SingleRAN Broad Hardware Pipe
Solution
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Concurrent
BBP
SingleBBU and CloudBB Evolution
WBBP LBBP
GTMU UMPT( U) UMPT( L)
WBBP LBBP
UMPT( GUL)
UBBP(GUL)
UMPT(GUL)
General Hardware
5B3M in One BBU From MPT Concurrent to BBP Concurrent
SingleBBU, not Just Co-BBU
SRAN8.0 Near Future Before
Concurrent
MPT
Separated
MPT
Evolve to CloudBB Step by Step
30%+ capacity improving 30%+ OPEX saving QOE enhancing
Centralized maintenance
Pool for capacity gain and sharing
Open API
CloudBB
Cloud BB
Coming Near Future SRAN8.0
BBU Pooling BBU Stack
BBU Capability Double Every Year BBU Architecture Evolution Matching BBU Growth
BBU RF Cabinet Controller
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L U G
SingleBBU Architecture from SRAN8.0
WBBP LBBP GTMU
WMPT LMPT
SingleRAN
Dedicated
HW for each
RAT
Separate
OAM
interface
SingleRAN
in OSS
UMPT GUL Concurrent , Making Separated G/U/L OM to SingleOM
GUL
WBBP LBBP GBBP
UMPT Common
HW for
each RAT
Single OAM
interface
SingleOM
in OSS
GUL
SingleRAN
BBU RF Cabinet Controller
SRAN8.0 SRAN 6.0/SRAN7.0
G U L
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SingleRAN Common BBU Benifits Single Operation
SingleRAN 3 brains(~2013)
SingleRAN 1 brain (2013~)
LTE UMTS GSM
Common Hardware
LTE UMTS GSM
Common Hardware
From One Team to One Knowledge
0
2
4
6
UMTS LTE GSM SingleRAN(With SingleOM)
Common part (iRAT part) Common part (Single RAT) RAT related
0
0.2
0.4
0.6
0.8
1
NodeB eNodeB GBTS SingleRAN( with SingleOM)
-40%
0
1
2
3
4
NodeB eNodeB GBTS SingleRAN(with SingleOM)
-40% Integration Parameters (x1000)
MML Commands (x1000)
-80%
Common Hardware test instance
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UMPT Evolution and Specification
UMPT Specification & Capacity
Before Now
G: 60 TRX(IP)
U: 170 CNBAP/s
L: 30 CAPs
G: 72 TRX; U: 1500 CNBAPs
L: 120 CAPs
GUL(Typical Concurrent ):
18 TRX+1000CNBAPS+30CAPS
In-house Chipset
4E1/T1 2FE/GE
UMPT Evolution
SRAN7.0 SRAN8.0
Same Hardware for UMTS and LTE
Hardware Ready for
GUL Concurrent
evolution
GUL Concurrent
Dynamically
Signaling Sharing
BBU RF Cabinet Controller
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Blade RRU
Unique Seamless Assembly Smallest & Fastest Best-in-class RF Performance
One Box Multi-band, Multi-RAT and
Multi-sector Scalability
12L/14KG Industrys most lightweight macro RRU, three modules installed under 5 minutes
Up to10W/L Power Density Up to 60MHz IBW
30% Less Power Consumption
Scenario 2: Band X + Y Or Sector 1 + 2
Scenario 3: Band X + Y + Z Or Sector 1 + 2 + 3
Scenario 1: Band X Sector 1
Blade RRU, Designed for Multi-band and Multi-RAT Scalability
BBU RF Cabinet Controller
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50% Highest Power Efficiency
Dielectric duplexer
One Chip for
All Digital Functions
Decrease 30% Power Consumption
ONE Box Assembly
12L/14KG Industry Highest Integration
Super Slim Fin
Die-Casting for ultra
high efficiency heat sink
Chimney channel
Fresh Air
Compensation
Blade RRU Flexible Installation
36L
66% Box saved per site 50% Workload saved for cable
50% Wind resistance reduction
12 Cables
2 Boxes
4 Cables
6 Boxes
Blade RRU Flexible Expansion
Band X + Y
or
Sector 1 + 2
or
4 x 4 MIMO
Band X + Y + Z or
Sector 1 + 2 + 3
12L 24L 36L
Blade RRU Clean Site
Software Defined Equipment
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Best-in-class RF Performance
DPD+Doherty DPD+A DHT
DPD+A DHT/
Y-Power 40%
45%
50%
Blade RRU
Up to 10W/L , Power integration doubled
10% PA efficiency Improved, 13.5% Power saved
IBW
25M
60M
RRU3838
Up to 60M full bandwidth, One RRU support RAN Sharing
260W@24L 260W@12L
10W/L
5W/L Blade RRU Blade RRU
370W 320W 13.5%
Instantaneous Bandwidth Power Density
PA Efficiency
Software Defined Equipment
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Blade RRU Portfolio
3824 1T2R
1x60W
3838 2T2R
2x40W 3826 1T2R
1x80W
3832 2T4R
2x60W
3832 2T4R
2x60W
3938 2T2R
2x40W
3268 2T2R
2x40W
900M/ 1800M
2.1G
2.6G
APT700
AWS
2012 Q3 2012 Q4 2013 Q1 2013 Q2 2013 Q3 2013 Q4
2012 2013
3936 1T2R
1x80W
Note: 850/1900 under planning
Blade RRU (2.1G) available for rollout in Q3, 2012
Blade RRU portfolio will cover all mainstream bands by 2013
More bands will be supported by Blade RRU according the market needs beyond 2013
BBU RF Cabinet Controller
3260 2T4R
2x40W
3268 2T2R
2x40W
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Uplink 4Rx achieve 60% capacity gain
With 4 antennas per
sector for receiving
UL 4-Antenna Receive Diversity
Cell Average Throughput
2Rx
4Rx
60%
Increase
2Rx 4Rx -> In operator X Commercial trial network,2012
BBU RF Cabinet Controller
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Uplink Shared Channel IRC Shared Channel IRC vs. MRC
PUSCH IRC
2.4~3.7dB gain in 2Rx 5.3~5.7dB gain in 4Rx
9.55% increase UL Cell average Throughput (1X2 MMSE-IRC compared with MMSE-MRC )
Support of adaptive switch between MRC and IRC
Uplink Shared Channel (PUSCH) IRC
Interfering cell Victim cell
UEs Interfering on PUSCH
Scenario: Urban area, small ISD (Inter Site Distance) sites
Parameter Assumption
Cellular Layout Hex grid, 19 cell sites, 3 cells per site
Distance Dependant path-loss L = I + 37.6log10R (R in km) I = 128.1 2GHz
Lognormal Shadowing Similar to UMTS 30.03, B1.4.1.4
Shadowing Standard Deviation 8dB
Correlation distance of Shadowing 50m
Shadowing Correlation Between cells 0.5
Between sectors 1.0
Antenna pattern (Horizontal) 3-sector cell sites with fixed antenna pattern
Channel Model SCME
Total BS TX power (Ptotal) 43 dBm 1.25 / 5MHz carrier 46dBm - 10MHz carrier
Antenna configuration 2 or 4 for Rx, 1, 2 or 4 for Tx 4Tx: x-pol, 0.5 4Rx: x-pol, 0.5 5dB noise figure 14dBi BS antenna gain plus cable loss
UE power class 24dBm (250mW)
UE Antennas 2 or 4 Rx antennas, 1 Tx antenna 0dBi antenna gain 9dB noise figure
Inter-Cell Interference modelling Modelling the strongest interfering sectors (B=8 sectors for DL, B=10 users for UL) as spatially correlated processes whose covariance is determined by their channel matrices Model the remaining sectors as AWGN interferences
Minimum distance between UE and cell 35m
Thermal noise spectral density -174dBm/Hz
Users dropped evenly across the cell
dBA
AA
mdB
m
dB
20deg,70
,12min
1
2
1
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Uplink Control Channel IRC
20-40% increase in UL control channel coverage Improve network access success rate Support of adaptive switch between MRC and IRC
Uplink Control Channel (PUCCH/PRACH) IRC
Interfering cell Victim cell
UEs Interfering on PRACH and PUCCH
Scenario: Urban area small ISD (Inter Site Distance) sites
Control Channel IRC vs. MRC
PUCCH IRC
Format1x 1dB gain in 2Rx Format2x 0.5dB gain in 2Rx Format1x 2dB gain in 4Rx Format2x 0.7dB gain in 4Rx
PRACH IRC
4~4.8dB gain in 2Rx 7.2~8.8dB gain in 4Rx
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No-Edge of UL Intra-eNodeB CoMP: Improve 10% Cell Edge UL Throughput
* Simulation assumption: 10MHz, 2-Sector CoMP
T
hro
ugh
pu
t (M
bp
s)
Cell Average
Throughput.
Cell Edge
Throughput
7% Increase With CoMP
Without CoMP
10% Increase
Gain for UE1: Co-demodulated. Gain for UE2: Interference (UE1) Rejection.
UL CoMP w/t Co-demodulation & Interference
Rejection
Benefits*
UL Intra-eNB, Improve User throughput with software upgrade only
No CoMP
Intra-eNB CoMP
Intra-eNB CoMP Legend
LTE Feature
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Carrier Aggregation(CA)
LTE-A UE
LTE UE
CC1
up to 300Mbps@2*2MIMO
CC2
Scenario:
Intra-band CA (2CC) : 2.6G, 1.8G Inter-band CA(2CC): 2.6G+1.8G, 2.6G+800M,
1.8G+800M, 700M+AWS
Up to 40MHz total bandwidth Benefit:
Up to 300Mbps per UE CAT6 (DL 300 / UL 50Mbps @ 2x2 MIMO)
Fast load balance between the two LTE carriers
Dependency:
R10 UE need to support CA. Require LBBPc/LBBPd + LBBPd to support
2CC
Intra-band CA requires that the time deviation between the RF channels of different CC less
than 130 ns.
2.6G CC1
2.6G CC2 LTE-A UE
Intra-band CA
800M CC1 2.6G CC2
LTE-A UE
Inter-band CA
LTE Feature
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Contents
Spectrum usage for Claro
LTE in a SRAN perspective
Interworking
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Interworking Solution
Interworking Strategy Interworking Detail Features
RAT Priority Definition
Camping Strategy
Handover Strategy
Standard Interworking Function
Camping
Customized Priority Definition based
on SPID
Connected Mobility
Handover Process
CSFB
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GUL Interworking Priority Strategy Claro Peru
Better spectral efficiency (LTE - UMTS - GSM ),
higher priority
Higher frequency point, Higher priority
Camping Strategy When Idle
Strategy When Connected
Load balancing between LTE AWS and 700
Load balancing between LTE and UMTS
GSM 850/1900
UMTS 850
UMTS 1900
LTE 2100 (20Mx2)
Co
ve
rag
e b
as
ed
HO
MLB based HO High
Priority Order
Low 0/1
2
3
4
GU same as before
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Idle Mobile Distribution Strategy
eNodeB/BTS
FDD/GSM/UMTS Multi Mode UE
FDD/GSM/UMTS Multi Mode UE
GSM/UMTS Handset LTE/GSM/UMTS Multi Mode UE
Out of LTE coverage
FDD/GSM/UMTS UL sensitive UE
Voice centric Multi Mode UE
LTE FDD
GSM/UMTS
Cell
Priority
UE
Individual
Priority Coverage
Suggested strategies,
System Priority
To better serve 4G-preferred UE
and offload traffic from 3G
Coverage (Better Cell)
To let UE stay in the service area
UE Individual Priority based on SPID
To provide better service
experience for subscriber.
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Handover categories
Coverage based is recommended by default at initial stage
Load based is useful when LTE traffic significantly increased
Service based is for better utilization of each radio technologies
Distance and UL quality is to manage sub optimal cases
Flexible Mobility Strategy Satisfies Different Scenarios
Based on the radio link quality
Load balance
Based on the RB utilization
Service
Based on the service Based on UL Quality
X
UL Quality
Coverage
Distance
Based on the distance
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Interworking Solution
Interworking Strategy
RAT Priority Definition
Camping Strategy
Handover Strategy
Standard Interworking Function
Camping
Customized Priority Definition based
on SPID
Connected Mobility
Handover Process
CSFB
Interworking Detail Features
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LTE TDD/FDD/GSM/UMTS Interworking Standard Function
RRC_IDLE
RRC_CONNECTED
Cell Selection
Cell Reselection
Data Service Continuity
Voice Service Continuity
CS FallBack
Dual Radio UE
Redirection
Huawei Support All feature of Interworking
CCO/NACC
SRVCC
PS HO
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UE Switch ON PLMN/Cell Initial Selection
Last RPLMN
HPLMN & EHPLMN
User Controlled PLMN Selector
with Access Technology
Operator Controlled PLMN Selector
with Access Technology
The PLMN of Better Wireless Quality
Other PLMN Base On Wireless Quality
PLMN Select When UE Switch On
HPLMN or EHPLMN select
Stored in UE
Set in SIM
Set in SIM
Set in UE
Suggested PLMN List in SIM card:
PLMN + E-UTRAN
PLMN + UTRAN
PLMN + GSM
Customized PLMN/Frequency List in SIM card, UE Prefers to Camp on LTE Network
The Timer of HPLMN
Reselection is Saved in SIM
Card (no less 6 min)
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Camping Reselection to Higher Priority Cell
GSM/UMTS (Low)
LTE FDD (Higher)
SI
B
SI
B
Suggested RAT Priority: LTE FDD (Higher) GSM/UMTS (Low)
GSM, UMTS, FDD cells
broadcast same priority list
in SIB
UE reads SIB and get
neighbor list, priority, and
cell reselection parameters
UE measures signal
strength of higher priority
neighbor cells
Reselection happens when
RF condition is fulfilled. UE
camps on LTE FDD
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Low Prio.
eNodeB/BTS
High Prio. eNodeB
S-eNB is worse than Thresh_serving.low & T-BTS is
better than Thresh_x.low
T-eNB is better than Thresh_x.high
Cell Reselection From High -> Low Cell Reselection From Low > High
Cell Reselection
Idle Mobility Reselection to Better Cell
Cell Reselection Principal
FDD 1800
FDD 800
UMTS/GSM
Low Prio. -> High Prio.
Happens when UE enters
Higher Priority Cell
High Prio. -> Low Prio.
Happens when UE moves
out of Higher Priority Cell
UEs camp on Cell which
providing best service
LBFD-00201803 Cell Selection and Reselection
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Customized: UE Individual Priority based on SPID
MME
eNodeB
S1-MME
SPID)
GSM Priority 5
UMTS Priority 4
TDD Priority 3
FDD Priority 2
FDD Priority 5
TDD Priority 4
UMTS Priority 3
GSM Priority 2
Voice centric dual-Mode UE
Cell reselection
Info Cell reselection
Info
HSS
Data centric dual-Mode UE
eNodeB send UE Individual priority
in RRCConnectionRelease based
on SPID
S6a
SPID)
TDD Priority 5
FDD Priority 4
UMTS Priority 3
GSM Priority 2
Cell reselection
Info
UL sensitive UE
HSS: Set User SPID info & tell eNodeB via
MME
Data centric UE: eNB not send individual
priority to UE, common priority in SIB
works, then UE prefer camping on LTE TDD
Voice centric UE: eNB send UE individual
priority message which gives GSM higher
priority than LTE, then individual cell
reselection priority overwrite common
priority, UE prefer camping on GSM
UL sensitive UE: eNB send UE individual
priority message which gives LTE FDD
higher priority than LTE TDD, then
individual cell reselection priority will
overwrite common priority and UE prefers
camping on LTE FDD
Subscriber
Profile ID
Voice Centric UE Prefers GSM/UMTS & Data Centric UE Prefers LTE TDD/FDD
LOFD-00105401 Camp & Handover Based on SPID
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Connected Mobility Scheme: Redirection/PS Handover/CCO/NACC
Proper Interworking Policy is Chosen based on UE Capability
LTE FDD
To UMTS:
PS HO > Redirection
eNodeB
To GSM PS HO > CCO/NACC > Redirection
GSM UMTS
LOFD-001019 PS Inter-RAT Mobility between E-UTRAN and UTRANLOFD-001020 PS Inter-RAT Mobility between E-UTRAN and GERAN
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Coverage-based Handover
Moves to neighbor
LTE FDD cell
Inter-Frequency
Using different event threshold to decide handover target
Handover Priority: Intra-frequency > inter-frequency , Intra-RAT > inter-RAT
Inter-RAT
LTE FDD
AWS
UMTS
Threshold of trigger Inter-
freq HO (IF A2) is higher
than threshold of trigger
Inter-RAT HO (IR A2),
which means that inter-
freq HO is triggered earlier
than inter-RAT HO.
Moves out of LTE
coverage
If UE under UMTS move to LTE coverage, there are two options:
1. Service is still provided by UMTS. When service ends, UE will
camp on LTE network by cell reselection
2. UMTS triggers Inter-RAT handover to LTE
Moves to LTE
coverage
LBFD-00201801 Coverage Based Intra-frequency Handover LBFD-00201802 Coverage Based Inter-frequency Handover LOFD-001019 PS Inter-RAT Mobility between E-UTRAN and UTRANWRFD-020126 Mobility Between UMTS and LTE
LTE FDD
700
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Load Balancing based Handover
Load balance is optimal when traffic significantly increasing
Steering the newly-access subscriber to low-load network. Leverage the load among LTE/UMTS network. Make full use
of LTE/UMTS network resource.
LTE FDD AWS
Offload within FDD
(intra-freq HO)
Exchange load info via
RIM Procedure
GSM 850/1900
Iur-g
UMTS 850/1900
Offload between FDD/UMTS
(inter-RAT HO)
Huawei provide the seamless
synergy among multiple layer of
the network
Load
Trigger intra-freq HO
Trigger inter-freq HO
Trigger inter-RAT HO
Trigger redirection
directly
Low
High
According to cell load
(PRB utilization ratio)
LOFD-001032 Intra-LTE Load Balancing LOFD-001044 Inter-RAT Load Sharing to UTRAN LOFD-001045 Inter-RAT Load Sharing to GERAN WRFD-020306 Inter-RAT Handover Based on Load WRFD-070004 Load Based GSM and UMTS Handover Enhancement Based on Iur-g
WRFD-070006 GSM and UMTS Load Balancing Based on Iur-g
Offload between UMTS/GSM
(inter-RAT HO)
-
Page 35 HUAWEI TECHNOLOGIES CO., LTD.
35pt
: R153 G0 B0
:
LT Medium
: Arial
32pt
: R153 G0 B0
22pt
) :18pt
:
LT Regular
: Arial
20pt
):18pt
UL Quality based Handover
X
HO
Scenario: DL quality is good, but
UL quality is limited, which result
to poor service experience
Principle: When UL IBLER is
higher than threshold, trigger
handover to a better neighbor cell
Improve Edge User Experience in Interference or UL-Limited Scenario
LBFD-00201802 Coverage Based Inter-frequency Handover
-
Page 36 HUAWEI TECHNOLOGIES CO., LTD.
35pt
: R153 G0 B0
:
LT Medium
: Arial
32pt
: R153 G0 B0
22pt
) :18pt
:
LT Regular
: Arial
20pt
):18pt
Win Together
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