LTE Huawei

(1)

www.huawei.com 35pt : R153 G0 B0 : LT Medium : Arial 32pt : R153 G0 B0 黑体 22pt ) :18pt 黑色 : LT Regular : Arial 20pt ):18pt 黑色

Security Level:

LTE for Claro

Jan Berglund

(2)

Page 2 35pt : R153 G0 B0 : LT Medium : Arial 32pt : R153 G0 B0 黑体 22pt ) :18pt 黑色 : LT Regular : Arial 20pt ):18pt 黑色细黑体

Spectrum usage for Claro

LTE in a SRAN perspective

Interworking

(3)

35pt : R153 G0 B0 : LT Medium : Arial 32pt : R153 G0 B0 黑体 22pt ) :18pt 黑色 : LT Regular : Arial 20pt ):18pt 黑色

Proposed Claro spectrum layout

LTE Data Overlay

Smartphone

Capacity

Voice Coverage

850MHz: 5 +5 MHz UMTS

2013 2014 2015

U850

Smartphone

Coverage

Voice Capacity

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

(4)

Spectrum usage for Claro

LTE in a SRAN perspective

(5)

SingleRAN Broad Hardware Pipe

Solution

(6)

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

(7)

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

(8)

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%

(9)

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

(10)

Blade RRU

Unique Seamless Assembly

Smallest & Fastest

Best-in-class RF Performance

One Box

Multi-band, Multi-RAT and

Multi-sector Scalability

12L/14KG

Industry’s most lightweight

macro RRU, three modules

installed under 5 minutes

Up

to

10W/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

(11)

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

(12)

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

2×60W@24L

2×60W@12L

10W/L

5W/L

Blade RRU

370W

_320W

13.5%

Instantaneous Bandwidth

Power Density

PA Efficiency

(13)

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

(14)

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

(15)

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 (

1

X

2 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, 0.5λ 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

  dB A A A m dB m dB 20 deg, 70 , 12 min 1 2 1                      

(16)

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

(17)

No-Edge of

UL Intra-eNodeB CoMP: Improve 10% Cell Edge UL Throughput

* Simulation assumption: 10MHz, 2-Sector CoMP

Thr

oug

hput

(M

bps

)

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

(18)

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

(19)

Spectrum usage for Claro

LTE in a SRAN perspective

(20)

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

(21)

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)

C

o

v

er

ag

e

b

ased

H

O

MLB based HO

High

Priority Order

Low

0/1

2

3

4 GU same as before

(22)

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

(23)

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

(24)

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

(25)

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

(26)

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 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)

(27)

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

(28)

Page 30 35pt : R153 G0 B0 : LT Medium : Arial 32pt : R153 G0 B0 黑体 22pt ) :18pt 黑色 : LT Regular : Arial 20pt ):18pt 黑色细黑体 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

(29)

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

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

(30)



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 UTRAN LOFD-001020 PS Inter-RAT Mobility between E-UTRAN and GERAN

(31)

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 UTRAN WRFD-020126 Mobility Between UMTS and LTE

LTE FDD 700

(32)

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

LTE Huawei

Security Level:

LTE for Claro

Jan Berglund

Contents

Spectrum usage for Claro

LTE in a SRAN perspective

Interworking

Proposed Claro spectrum layout

LTE Data Overlay

Smartphone

Capacity

Voice Coverage

850MHz: 5 +5 MHz UMTS

U850

Smartphone

Coverage

Voice Capacity

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

Contents

Spectrum usage for Claro

LTE in a SRAN perspective

SingleRAN Broad Hardware Pipe

Solution

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

L

U

_Common