Huawei EHuawei_eRelay_Solution_OverviewRelay Solution Overview

8/10/2019 Huawei EHuawei_eRelay_Solution_OverviewRelay Solution Overview

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HUAWEI TECHNOLOGIES CO., LTD.

eRelay

A Perfect Solution for

Small Cell Backhaul


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Content

Challenges and Opportunities on Small Cell

eRelay Solution

Case Story


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HUAWEI TECHNOLOGIES CO., LTD. Huawei proprietary. No spread without permission. Page 3

Information Blast & Digital Flood

Capacity Ocean Demanded

Higher Efficienc

Better Experien

Capture Hotspot Value Intelligent B

Uneven world

Change Generates Network Requirements


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Unbalanced Traffic Distribution, Main Traffic in

HotspotTraffic

20% Hot sites carry 80% Traffic

Continuous Macro cell capacity

HotspotTraffic

SuburbanUrban

Unbalance will become

Continuous Macro cell capacityReal

Demand

SuburbanUrban Rural


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Small Cells Meet Capacity Demand in Hotspot

Huge traffic demand at

hotspot

2011

Load at hotspot is boosting

0

2

4

6

8

Average site throughput

Average hotspot site throughput

X5.6Mbps

Small Cells will

Hotspot

Indoor c

Coverag

100 Pico1 Macro Site / KM2 10 Micro Site / KM2


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Transmission Challenges for Small Cell Deplo

Macro

Pico MicroMacro

Macro

Micro

Femto

Micro MicroFemto

Femto

Pico

100 Small Cell Sites / KM2 Challenges for Backhaul Transmis

Optical & Cable

Slow and high cost for large scale deployme

Wireless

Microwave: LOS/P2P/High cost/Complex N

WiFi: Unlicensed spectrum/Low QoS/Interfe

A HetNet Network Architecture


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ABI Views on Mobile Backhaul for Small Cells

Global Outdoor Small Cell Backhaul by

Backhaul Type Usage, World Market,

Forecast: 2011

0

500

1,000

1,500

2,000

2,500

2010 2011 2012 2013 2014 2015 2016

(000s)

Fiber3%

Copper45%Microwave

LoS (6-38GHz)44%

LOS MMW(60-80GHz)0%

OFDMNLoS (sub

6 GHz)4%

Wi-Fi (sub6 GHz)

3%

Satellite1%

LOSMMW (60-80 GHz)

11%

OFDMNLoS(sub 6GHz)26%

Wi-Fi (sub6 GHz)

10%

Satellit0%

Source:

Global Outdoor S

by Backhaul Typ

Market, Forecas

Global Outdoor Small Cell

Shipments, CAGR (11-16) , 57.7%


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eRelay Improve Network Spectrum Efficiency

Enable UMTS/LTE Micro BTS flexible deployment

Enhance network spectrum capacity

The more Micro quantity, the higher of spectrum efficiency

Network Spectrum Efficiency (bit/Hz)Including Marco, Small cell, eRelay

Micro Quantity

0

2

4

6

8

10

12

14

16

0 1 2 3 4 5 6 7 8 9 10

RRN3300

RRN3300

eRelayMacro


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Comparison of Backhaul Technologies

xPON OLT

OpticalMicroWave

Coverage depends on

optical networkSlow deployment and

installation (usually mo

installation and $1000+

trenching)

LOS in rural area

PtP

OFDM Technologies

Deployment is very difficult

Mounted on top of tower for

better signal

eRelay

RRN

eRelay BS

Based on LTE

NLOS in urban area

PtMP

LTE TDD technologies

Fast deployment and easy

network planning

Unified OM system with Single

RAN

RRN: eRelay Remote Node

eRelay BS: eRelay Base Station


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Content

Challenges and Opportunities on Small Cell

eRelay Solution

Case Story


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SingleRAN

Pe


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Easy Deployment by SingleRAN Based on eRe

6 Band, 4 Mode, 1Cabinet

eRelay

RRU

Multi-Band and Multi-Mode Conv

L2600L2300

L1800

L700

G1800

G900

U2100

U900

eRelay

2.6/3.5GHz

Co-BBU

BMPTRMPTRBBP

wBBP WMPTRMPTRBBP

eRelay + GSM eRelay + UMTS e

RTPTRTPT

SingleRAN Pe

SingleRAN

Pe


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Enhanced Capacity Fully Meet Small Cell Dem

0

50

100

150

200

DL UL

180

90

Standard

Peak data rate

(Mbps)

4*4 MU-Beamforming

256QAM

2*4 VMIMO

64QAM

Transmission Requirement 4 UMTS Micro/5Mhz 4 LTE Micro/10Mhz eRe

Downlink(Mbps) 64Mbps 144Mbps 180Mbp

Uplink(Mbps) 40Mbps 96Mbps 90Mbps

g

SingleRAN

Pe


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Improve the overall upli

throughput.

The average capacity in

above 15%

Multi-users use the same

time-frequency resource

Uplink Virtual MIMO Improve UL Capacity

Features Benefits

eRelay BS

RRN1

RRN2

SingleRAN

Pe


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4T4RNon-Beamforming

4T4R

Multi-user Beamformin

20~30 %

Simulat io

4 layer pa

Multi-user BeamForming Improve DL Capacity

MU-BF uses Beamforming andschedules more than one user on the

same DL resources block

simultaneously.

Features

About 20-30% average

increase ( MUBF vs No

Benefits

RRN1

RRN2

eRelay BS


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SingleRAN

Pe


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Layer2 Forwarding Simplify Network Configur

PDCP

RLC

MAC

Phy

VLAN/Ethernet

L1

PDCP

RLC

MAC

Phy

VLAN/Ethe

RTRP

RMPT

RBBP RR

RR

eRelay BS

Modify LTE TDD air interface protocol stack to carry ETH MAC and VLAN id

Reduce IP route configuration

SingleRAN

Pe


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1. Classification base2. Flowmapping to

QCI3. EPFscheduling

based on QCI4. Traffic shaping based on logical/physical

port

5. Queue Scheduling,8 queues,

SP+WRR

3. EPF scheduling based on QCI

1. Classification based on 802.1p/VLAN ID

2. Flow mapping to QCI

Upstream direction

Downstream direction

Ethern

Air int

eRelay QoS Overview

eRelay BS

RRN

eRelay BS

RRN

SingleRAN

Pe


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eRelay air interface schedule realize inter-link capacity balance, which can be schedu

service priority

Load Balance Between Multi-Links, Improve E

Micro2

Micro3

Micro1

LTE-Micro1eRelay RRN

eRelay BS

LTE-Micro2

LTE-Micro3


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Product Introduction of eRelay Version 2.1

Highest Density Giga BBURMPT

RBBP

eRelay Main Processing Un

DL+UL:1.5Gbps/Card

eRelay Baseband Processin

BBU3900

RTRP

eRelay Transmission Proce

4T4R

Band: 38/42/43

IBW: 40MHz

1T2R

Band: 38/42/43

RRN3300RRU3332


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Features of eRelay Version 2.1

DBS3900 eRelay RRN 3300

Frequency: BAND 38/42/43(2.6G/3.5G)

Carrier and mode: 2 Carriers, 4T4R, MIMO

PA output power:4*20W(2.6G), 4*10W(3.5G)

Throughput: DL 80MbpsUL 35Mbps

RRU Size and Weight: 18L,


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Huawei eRelay Roadmap

2.6GHz

DBS3900 eRelay: 4T4R

RRN3300: 1T2R

DL: 2*2 MIMO, 64QAM,

DL Throughout: 80Mbps/sector,

55Mbps/Link

UL: 1*2 SIMO, 16QAM,

UL throughout: 25Mbps/Sector,

20Mbps/Link L3 networking

2.6GHz, 3.5GHz

DBS3900 eRelay : 4T4R RRN3300 : 1T2R DL: 2*2 MIMO, 64QAM

UL: 1*2 SIMO, 2 VMIMO

DL Throughout: 80Mbps/sector,

55Mbps/Link

UL Throughout: 35Mbps/sector,

20Mbps/Link

L2 networking VLAN

eRelay 2.0For trial test

eRelay 2.1 (12Q4) 2.6GHz, 3.5GHz

DL: 4 MU-BF, 256QA

UL: 4 VMIMO, 64QA

DL Throughout: 180M

UL Throughout: 90M

Multi-carriers

eRelay 3.0 (Pla


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R l 1 0 T i l i C t S i V d f


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eRelay1.0 Trial in Cartagena, Spain Vodafone

eRelay RRN

eRelay BS

Based on TD-LTE

FE LAN port

FE LAN port

FE LAN port

Location & Time Cartagena of Spain, 2011.6

Trial scope(1) 2* Backhaul eRelay BTS configured to 2 sectors mounted on a Macro site e.g. roof top

(2) 7* UMTS APs, and 5* LTE MetroZone eNBs

Spectrum

2.6G FDD Metrozone eNB: Bandwidth: 10MHz

2.6G eRelay BTS: Bandwidth: 20MHz

2.1G 3G outdoor AP, Bandwidth: 5MHz

Sit I t ll ti d T t S i


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Site Installation and Test Scenario

eRelay BS in c

eRelay RRN on l

2 eRelay BSs, 7 RRNs

most of them are NLOS environment

Test Result: Throughput & Latency


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Test Result: Throughput & Latency

Average DL Rate 53Mbps

Air-interface RTD latency is less than 13ms

Average UL Rate 20Mbp


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Thank youwww.huawei.com

Copyright2011 Huawei Technologies Co., Ltd. All Rights Reserved.

The information in this document may contain predictive statements including, without limitation, statements re

financial and operating results, future product portfolio, new technology, etc. There are a number of factors that

results and developments to differ materially from those expressed or implied in the predictive statements. Therefo

is provided for reference purpose only and constitutes neither an offer nor an acceptance. Huawei may change the

time without notice.

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