Security Level:
LTE for Claro www.huawei.com
Jan Berglund Wireless Marketing Director HUAWEI TECHNOLOGIES CO., LTD.
Contents Spectrum usage for Claro LTE in a SRAN perspective Interworking
HUAWEI TECHNOLOGIES CO., LTD.
Page 2
Proposed Claro spectrum layout LTE Data Overlay
LTE Capacity Layer
AWS B4: 20MHz – Urban LTE Capacity
LTE AWS
LTE APT700
APT700 : X MHz – LTE Coverage
Smartphone Capacity
Legacy voice capacity layer and new data capacity G1900 GU1900 1900MHz: 17.5MHz GSM -> 5+5U + 7.5G
Smartphone Coverage
3G Coverage Layer
850MHz: 5 +5 MHz UMTS
Voice Capacity
U850 Indoor coverage layer
850MHz: 2.5MHz GSM
2013 HUAWEI TECHNOLOGIES CO., LTD.
Voice Coverage
G850
2014
2015
2015 Page 3Page
3
Contents Spectrum usage for Claro LTE in a SRAN perspective Interworking
HUAWEI TECHNOLOGIES CO., LTD.
Page 4
SingleRAN Broad Hardware Pipe Solution
HUAWEI TECHNOLOGIES CO., LTD.
Page 5
BBU
RF
Cabinet
Controller
SingleBBU and CloudBB Evolution SRAN8.0 Concurrent MPT
Before Separated MPT
SRAN8.0
Near Future Concurrent BBP
BBU Stack
General Hardware
Coming
Centralized maintenance
Near Future
BBU Pooling
Cloud BB
Pool for capacity gain and sharing
UBBP(GUL)
CloudBB
UMPT(GUL) WBBP
Open API
30%+ capacity improving 30%+ OPEX saving QOE enhancing
LBBP
UMPT( GUL) WBBP GTMU
UMPT( U)
LBBP UMPT( L)
SingleBBU, not Just Co-BBU
Evolve to CloudBB Step by Step
• 5B3M in One BBU • From MPT Concurrent to BBP Concurrent
• BBU Capability Double Every Year • BBU Architecture Evolution Matching BBU Growth
HUAWEI TECHNOLOGIES CO., LTD.
Page 6
SingleBBU Architecture from SRAN8.0 SRAN 6.0/SRAN7.0
SingleRAN
G
G
GTMU
U
U
LMPT
WBBP
LBBP
SingleRAN
Controller
SingleOM in OSS
Separate OAM interface
Single OAM interface
GUL Dedicated HW for each RAT
UMPT GBBP
WBBP
LBBP
UMPT GUL Concurrent , Making Separated G/U/L OM to SingleOM HUAWEI TECHNOLOGIES CO., LTD.
Cabinet
GUL
L
WMPT
RF
SRAN8.0 SingleRAN in OSS
L
BBU
Page 7
Common HW for each RAT
SingleRAN Common BBU Benifits Single Operation From One Team to One Knowledge
6
Common Hardware test instance
-80%
4
GSM
UMTS
LTE
2 0 UMTS
LTE
Common part (iRAT part)
Common Hardware
GSM Common part (Single RAT)
MML Commands (x1000)
1
-40%
0.8
SingleRAN 3 brains(~2013)
SingleRAN(With SingleOM) RAT related
0.6 0.4
GSM
UMTS
LTE
0.2 0 NodeB 4
Common Hardware
eNodeB
GBTS
SingleRAN( with SingleOM)
Integration Parameters (x1000)
-40%
3 2
SingleRAN 1 brain (2013~)
1 0 NodeB
HUAWEI TECHNOLOGIES CO., LTD.
eNodeB
GBTS
SingleRAN(with SingleOM) Page 8
BBU
RF
Cabinet
Controller
UMPT Evolution and Specification UMPT Specification & Capacity
UMPT Evolution
4E1/T1 2FE/GE
GUL
Same Hardware for UMTS and LTE
Concurrent
Dynamically
Signaling Sharing
In-house Chipset
Hardware Ready for GUL Concurrent evolution
Before • • •
SRAN7.0
HUAWEI TECHNOLOGIES CO., LTD.
SRAN8.0
G: 60 TRX(IP) U: 170 CNBAP/s L: 30 CAPs
Now G: 72 TRX; U: 1500 CNBAPs • L: 120 CAPs • GUL(Typical Concurrent ): 18 TRX+1000CNBAPS+30CAPS •
Page 9
BBU
RF
Cabinet
Controller
Blade RRU, Designed for Multi-band and Multi-RAT Scalability
Scenario 1: Band X Sector 1
Scenario 2: Band X + Y Or Sector 1 + 2
Scenario 3: Band X + Y + Z Or Sector 1 + 2 + 3
Blade RRU Unique Seamless Assembly One Box Multi-band, Multi-RAT and Multi-sector Scalability
HUAWEI TECHNOLOGIES CO., LTD.
Smallest & Fastest 12L/14KG
Industry’s most lightweight macro RRU, three modules installed under 5 minutes
Best-in-class RF Performance Up to10W/L Power Density Up to 60MHz IBW 30% Less Power Consumption
Page 10
Software Defined Equipment
Blade RRU Flexible Installation Blade RRU Clean Site
6 Boxes
36L
2 Boxes
66% Box saved per site 50% Workload saved for cable 50% Wind resistance reduction
Dielectric duplexer
50% Highest Power Efficiency
One Chip for All Digital Functions Decrease 30% Power Consumption
4 Cables
12 Cables
Blade RRU Flexible Expansion
24L
12L
Band X + Y or Sector 1 + 2 or 4 x 4 MIMO
HUAWEI TECHNOLOGIES CO., LTD.
36L Band X + Y + Z or Sector 1 + 2 + 3
Super Slim Fin Die-Casting for ultra high efficiency heat sink
Chimney channel Fresh Air Compensation
12L/14KG
ONE
Industry Highest Integration
Box Assembly
Page 11
Software Defined Equipment
Best-in-class RF Performance PA Efficiency 370W 45%
320W
13.5%
50% DPD+A DHT/ Y-Power
40%
10% PA efficiency Improved, 13.5% Power saved
DPD+A DHT DPD+Doherty
Blade RRU
Instantaneous Bandwidth
Power Density 10W/L
60M
Blade RRU 25M
IBW
RRU3838 HUAWEI TECHNOLOGIES CO., LTD.
Up to 60M full bandwidth, One RRU support RAN Sharing
5W/L
2×60W@24L
Blade RRU
2×60W@12L Page 12
Up to 10W/L , Power integration doubled
BBU
Blade RRU Portfolio 2012
Cabinet
Controller
2013 3268 2T2R 3260 2x40W 2T4R 2x40W
2.6G
Blade RRU (2.1G) available for rollout in Q3, 2012 Blade RRU portfolio will cover all mainstream bands by 2013
3832 2T4R 2x60W
AWS
2.1G
RF
3838 2T2R 3832 2x40W 2T4R 2x60W
3824 1T2R 3826 1x60W 1T2R 1x80W
3936 1T2R 1x80W
900M/ 1800M
More bands will be supported by Blade RRU according the market needs beyond 2013
3938 2T2R 2x40W
3268 2T2R 2x40W
APT700 2012 Q3
2012 Q4
HUAWEI TECHNOLOGIES CO., LTD.
2013 Q1
2013 Q2
2013 Q3
Note: 850/1900 under planning
2013 Q4 Page 13
BBU
RF
Cabinet
Controller
Uplink 4Rx achieve 60% capacity gain UL 4-Antenna Receive Diversity
60% Increase
With 4 antennas per
2Rx
sector for receiving
4Rx
Cell Average Throughput
2Rx -> 4Rx HUAWEI TECHNOLOGIES CO., LTD.
In operator X Commercial trial network,2012 Page 14
Uplink Shared Channel IRC Shared Channel IRC vs. MRC PUSCH IRC
Scenario: Urban area, small ISD (Inter Site Distance) sites
UEs Interfering on PUSCH
Victim cell
Interfering cell
2.4~3.7dB gain in 2Rx 5.3~5.7dB gain in 4Rx
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
Uplink Shared Channel (PUSCH) IRC 9.55% increase UL Cell average Throughput (1X2 MMSE-IRC compared with MMSE-MRC ) Support of adaptive switch between MRC and IRC HUAWEI TECHNOLOGIES CO., LTD.
2 , Am A min 12 1dB 1dB 70 deg, Am 20dB
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, 0.5λ 4Rx: x-pol, 0.5λ 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
Page 15 Users dropped evenly across the cell
Uplink Control Channel IRC Scenario: Urban area’ small ISD (Inter Site Distance) sites
Control Channel IRC vs. MRC
PUCCH IRC
UEs Interfering on PRACH and PUCCH
Format1x 1dB gain in 2Rx Format2x 0.5dB gain in 2Rx Format1x 2dB gain in 4Rx Format2x 0.7dB gain in 4Rx
PRACH IRC Victim cell
Interfering cell
4~4.8dB gain in 2Rx 7.2~8.8dB gain in 4Rx
Uplink Control Channel (PUCCH/PRACH) IRC 20-40% increase in UL control channel coverage Improve network access success rate Support of adaptive switch between MRC and IRC HUAWEI TECHNOLOGIES CO., LTD.
Page 16
LTE Feature
No-Edge of UL Intra-eNodeB CoMP: Improve 10% Cell Edge UL Throughput UL CoMP w/t Co-demodulation & Interference
Benefits*
Rejection No CoMP
Intra-eNB CoMP
Intra-eNB CoMP Legend
• •
Gain for UE1: Co-demodulated. Gain for UE2: Interference (UE1) Rejection.
Throughput (Mbps)
Without CoMP
7% Increase
With CoMP
10% Increase
Cell Average Throughput.
Cell Edge Throughput
* Simulation assumption: 10MHz, 2-Sector CoMP
UL Intra-eNB, Improve User throughput with software upgrade only HUAWEI TECHNOLOGIES CO., LTD.
Page 17
LTE Feature
Carrier Aggregation(CA) 2.6G CC1
LTE-A UE
LTE-A UE
2.6G CC2
2.6G CC2
Inter-band CA
Intra-band CA
up to 300Mbps@2*2MIMO CC2
LTE-A UE
CC1
800M CC1
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.
LTE UE
HUAWEI TECHNOLOGIES CO., LTD.
Page 18
Contents Spectrum usage for Claro LTE in a SRAN perspective Interworking
HUAWEI TECHNOLOGIES CO., LTD.
Page 21
Interworking Solution Interworking Strategy
Interworking Detail Features
RAT Priority Definition
Standard Interworking Function
Camping Strategy
Camping
Handover Strategy
Customized Priority Definition based on SPID Connected Mobility Handover Process CSFB
HUAWEI TECHNOLOGIES CO., LTD.
Page 22
GUL Interworking Priority Strategy – Claro Peru MLB based HO 4
LTE 2100 (20Mx2)
3
UMTS 1900
2
UMTS 850 GU same as before
Low
0/1 Priority Order
Camping Strategy When Idle Better spectral efficiency (LTE - UMTS - GSM ), higher priority
GSM 850/1900
Coverage based HO
High
Strategy When Connected Load balancing between LTE AWS and 700 Load balancing between LTE and UMTS
Higher frequency point, Higher priority
HUAWEI TECHNOLOGIES CO., LTD.
Page 23
Idle Mobile Distribution Strategy Cell Priority
Suggested strategies, UE Individual Priority
System Priority
Coverage
Coverage (Better Cell)
GSM/UMTS
FDD/GSM/UMTS FDD/GSM/UMTS Multi Mode UE UL sensitive UE
GSM/UMTS Handset
Voice centric Multi Mode UE
FDD/GSM/UMTS Multi Mode UE
To provide better service experience for subscriber.
LTE/GSM/UMTS Multi Mode UE Out of LTE coverage
eNodeB/BTS
HUAWEI TECHNOLOGIES CO., LTD.
To let UE stay in the service area
UE Individual Priority based on SPID
LTE FDD
To better serve 4G-preferred UE and offload traffic from 3G
Page 24
Handover categories Load balance
Coverage
Based on the radio link quality
UL Quality
√ X
Based on the RB utilization Service
Based on the service
Based on UL Quality
Distance 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
Based on the distance
Flexible Mobility Strategy Satisfies Different Scenarios HUAWEI TECHNOLOGIES CO., LTD.
Page 25
Interworking Solution Interworking Strategy
Interworking Detail Features
RAT Priority Definition
Standard Interworking Function
Camping Strategy
Camping
Handover Strategy
Customized Priority Definition based on SPID Connected Mobility Handover Process CSFB
HUAWEI TECHNOLOGIES CO., LTD.
Page 26
LTE TDD/FDD/GSM/UMTS Interworking Standard Function Cell Selection RRC_IDLE
Cell Reselection PS HO CCO/NACC
Data Service Continuity
Redirection
RRC_CONNECTED CS FallBack
Voice Service Continuity
SRVCC Dual Radio UE
Huawei Support All feature of Interworking HUAWEI TECHNOLOGIES CO., LTD.
Page 27
UE Switch ON — PLMN/Cell Initial Selection PLMN Select When UE Switch On Last RPLMN
Stored in UE
HPLMN or EHPLMN select
Set in SIM
HPLMN & EHPLMN
Set in UE
Set in SIM Suggested PLMN List in SIM card: PLMN + E-UTRAN PLMN + UTRAN PLMN + GSM
User Controlled PLMN Selector with Access Technology” Operator Controlled PLMN Selector with Access Technology”
The Timer of HPLMN Reselection is Saved in SIM Card (no less 6 min)
The PLMN of Better Wireless Quality
Other PLMN Base On Wireless Quality
Customized PLMN/Frequency List in SIM card, UE Prefers to Camp on LTE Network HUAWEI TECHNOLOGIES CO., LTD.
Page 28
Camping — Reselection to Higher Priority Cell GSM, UMTS, FDD cells broadcast same priority list in SIB
LTE FDD (Higher) SI B
UE reads SIB and get neighbor list, priority, and cell reselection parameters
GSM/UMTS (Low) SI B
Suggested RAT Priority: LTE FDD (Higher) GSM/UMTS (Low)
UE measures signal strength of higher priority neighbor cells
Reselection happens when RF condition is fulfilled. UE camps on LTE FDD
HUAWEI TECHNOLOGIES CO., LTD.
Page 29
LBFD-00201803 Cell Selection and Rese
Idle Mobility — Reselection to Better Cell Cell Reselection Principal S-eNB is worse than Thresh_serving.low & T-BTS is better than Thresh_x.low
FDD 1800
Cell Reselection
FDD 800
High Prio. eNodeB
T-eNB is better than Thresh_x.high
Low Prio. eNodeB/BTS
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
HUAWEI TECHNOLOGIES CO., LTD.
Cell Reselection From High -> Low
Cell Reselection From Low > High Page 30
LOFD-00105401 Camp & Handover Based on
Customized: UE Individual Priority based on SPID S6a （SPID) HSS Subscriber Profile ID
HSS: Set User SPID info & tell eNodeB via MME eNodeB send UE Individual priority
MME S1-MME （SPID)
on SPID
Cell reselection Info
Cell reselection Info
GSM Priority 5
in RRCConnectionRelease based
FDD Priority 5 TDD Priority 4
eNodeB
UMTS Priority 4
UMTS Priority 3
TDD Priority 3
GSM Priority 2
Cell reselection Info
TDD Priority 5 FDD Priority 4
FDD Priority 2
UMTS Priority 3 GSM Priority 2
Voice centric dual-Mode UE
UL sensitive UE
Data centric dual-Mode UE
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
Voice Centric UE Prefers GSM/UMTS & Data Centric UE Prefers LTE TDD/FDD HUAWEI TECHNOLOGIES CO., LTD.
Page 31
Connected Mobility Scheme: Redirection/PS Handover/CCO/NACC To GSM： PS HO > CCO/NACC > Redirection
LOFD-001019 PS Inter-RAT Mobility between E-UTRAN and LOFD-001020 PS Inter-RAT Mobility between E-UTRAN and
To UMTS: PS HO > Redirection
eNodeB
GSM
LTE FDD
UMTS
Proper Interworking Policy is Chosen based on UE Capability HUAWEI TECHNOLOGIES CO., LTD.
Page 32
LBFD-00201801 Coverage Based Intra-frequency Handover LBFD-00201802 Coverage Based Inter-frequency Handover LOFD-001019 PS Inter-RAT Mobility between E-UTRAN and WRFD-020126 Mobility Between UMTS and LTE
Coverage-based Handover Moves to neighbor LTE FDD cell
Threshold of trigger Interfreq HO (IF A2) is higher
Moves out of LTE coverage LTE FDD
than threshold of trigger
Inter-RAT HO (IR A2),
LTE FDD 700
AWS
which means that interfreq HO is triggered earlier
Inter-RAT
than inter-RAT HO.
Inter-Frequency UMTS
Moves to 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
Using different event threshold to decide handover target Handover Priority: Intra-frequency > inter-frequency , Intra-RAT > inter-RAT
HUAWEI TECHNOLOGIES CO., LTD.
Page 33
Load Balancing based Handover Huawei provide the seamless synergy among multiple layer of the network
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
High
Trigger redirection directly Trigger inter-RAT HO Trigger inter-freq HO
Offload within FDD (intra-freq HO)
Trigger intra-freq HO According to cell load (PRB utilization ratio)
LTE FDD AWS
Offload between FDD/UMTS (inter-RAT HO)
Exchange load info via RIM Procedure
UMTS 850/1900
Offload between UMTS/GSM (inter-RAT HO) GSM 850/1900
HUAWEI TECHNOLOGIES CO., LTD.
Iur-g
Low
Load
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.
Page 34
LBFD-00201802 Coverage Based Inter-frequency Ha
UL Quality based Handover
√ X
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
HO
Improve Edge User Experience in Interference or UL-Limited Scenario HUAWEI TECHNOLOGIES CO., LTD.
Page 35
Win Together
HUAWEI TECHNOLOGIES CO., LTD.
Page 36