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HUAWEI TECHNOLOGIES SWEDEN AB

Radio Network Evolution 4G to 5G Emerging Use Case(s) and RAN Deployment Topologies

in the context of RAN Evolution Requirements towards a 5G System

Presentation at Wireless@KTH, Stockholm, 2016-10-28

by Sören Andersson, Huawei Technologies Sweden AB


Huawei Confidentiality 2

Outline

Cost Efficient Network Densification and Capacity Growth towards 5G

The main Challenges and Requirements

Competitors and 3GPP

A few observations

Cost vs Performance TCO-Analysis

Densification, yes! But, first starting off from a different angle... ”mmWave Early-Adopters”

RAN Energy Consumption towards 5G Networks

Initial Results and Indications



Cost-Efficient Network Densification and

Capacity Growth towards 5G

FACTS: Mobile traffic will grow significantly the coming years

ARPU can be assumed to stay flat

QoE requirements will increase

from today’s 1Mbps to 10/25/50+ Mbps

New services will emerge once ”5G-capabilities” are becoming available

IoT, V2X, WTTx...

4K/8K, AR, VR, ...

CONCLUSIONS: Operators must be provided with RAN/BTS Solution

Alternatives offering both a low CAPEX and a very low OPEX

Cost per transported bit must be significantly lowered

Preferably exceeding the corresponding numbers for traffic growth

RAN/BTS solutions and topologies offering very high network capacity/km2

must be devised

Energy Efficiency will become of paramount importance

SON-capabilities will become a necessity in future RAN-deployments

Enabling the number of deployed nodes to become much higher than in today’s RAN’s


Huawei Confidentiality 4 Many similarities!

except for the notable absence of macro-sites, and that 3GPP is a bit late...

Competitors and 3GPP

Facebook trials:

UDN’s

UAN

...

UAN

...

...

FH

BH->Macro

BH - Mesh

FH - Mesh FH - Mesh

~3GPP

”Based on off-the-shelf 802.11ad chip- sets, with a modified MAC-layer”

Broadcom: has a similar solution, including HotSpot Access functionality(LTE/WiFi) in their routing/aggregation nodes

3GPP: “NR frame structure to support FDD, TDD, DL, UL, sidelink, access, backhaul, relay, standalone and non-standalone operation in licensed band, licensed-assisted access in unlicensed band.”

”X-haul”: node-type possibilities



HAN

LEAN

Cost vs Performance TCO-Analysis Solution Alternatives: ”WTTx++” Deployed by a 5G Mobile Operator

Main Scenario Parameter Variations:

BTS -- access side:

Sub-6GHz, bandwidth 20-100MHz

AntConfig: ”M-MIMO”

BTS – ”access & backhaul” side:

~30GHz, bandwidth TBD

AntConfig: 32,64, 128(?)

LEAN – ”access & front/backhaul” side:


AntConfig: 32, 64, 128(?)

HAN – ”access & front/backhaul” side:


AntConfig: 32, 64, 128(?)

HAN -- access side:

~3.5-6 GHz, bandwidth 20-100MHz x Y (Y=1-5?))

AntConfig: 1,2,4,8

~30GHz, bandwidth 100-1000MHz(?)

AntConfig: 32, 64, 128(?)

(s/m)CPE -- ”backhaul” side (indoors/outdoors/mobile?):

~3.5-6GHz, bandwidth 20-100MHz (100MHz x Y (Y=1-5?))

AntConfig: 1,2,4,8 (8, 16)

~30GHz, bandwidth 100MHz x Y (Y=1-10?)

AntConfig: 8,16,32 (32, 64)?

(s/m)CPE -- ”service-delivery” side (indoors/outdoors):

Ethernet-connectors?

WiFi? 2.4/5/60GHz?

HDMI? E t c, e t c,...

~30GHz Sub6GHz

UDN’s

UAN

...

UAN

...

...

FH

BH->Macro

BH - Mesh

FH - Mesh FH - Mesh

~3GPP

LEAN+HAN

These should probably be rather capable routing/aggregation nodes, serving many HAN- & CPE ”sub-nodes”

mCPE

Serving the whole building – multi-household ”pole-deployed”

Serving a single household – ”self-deployed”

A Few Initial Questions: - What are “reasonable” ISD’s for the macro network? Making Cost-per-Bit , PC & TCO-eqn’s look “good”? - In ”realistic” deployment cases, how many LEAN-nodes could be required? - Interworking between high/low bands? Initial access? Location of functionalities? Costs&EE per node? - What is the impact on latency from the various deployment topologies? Latency requirements/service?

mmW-BTS

M-MIMO BTS

LEAN: LoS-Ensurance Aggregation Node HAN: Hotspot Access Node UDN: Ultra-Dense network Node

HUAWEI TECHNOLOGIES CO., LTD. Huawei Confidential

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partners :

Cost vs Performance TCO-Analysis Solution Alternatives - HotAreas

~30GHz ~30GHz

Sub6GHz

FH

Indoor

Penetration*

UAN 1

UDN

UDN

UDN

UDN: Ultra Dense network Node

UAN: UDN Aggregation Node

FH - Mesh

UAN 2

Aggregating a second

sub-set of UDN’s (not shown)

BH - Mesh

UDN’s

UAN

...

UAN

...

...

FH

BH->Macro

BH - Mesh

FH - Mesh FH - Mesh

~3GPP

- Bands: =10.85GHz; more later on - Ch. BW 200MHz - EIRP’s/100MHz e t c

* sub3GHz-macro for indoor coverage not shown in this picture

Main Scenario Parameter Variations:

• BTS -- access side: Sub-6GHz, bandwidth 20-100MHz

AntConfig: ”M-MIMO”

• BTS -- UAN backhaul side: ~30GHz, bandwidth TBD

AntConfig: 32,64, 128(?)

• UAN -- macro backhaul side: ~30GHz, bandwidth TBD

AntConfig: 32, 64, 128(?)

• UAN -- fronthaul side: ~30GHz, bandwidth TBD

AntConfig: 32, 64, 128(?)

• UDN – fronthaul & FH-mesh side: ~30GHz, bandwidth TBD

AntConfig: 32, 64, 128(?)

• UDN -- access side: ~3.5-6 GHz, bandwidth 20-100MHz x Y (Y=1-5?))

AntConfig: 1,2,4,8

~30GHz, bandwidth 100-1000MHz

AntConfig: 32, 64

• UE (or a CPE for WTTx or on a moving vehicle, e.g.): ~3.5-6GHz, bandwidth 20-100MHz (100MHz x Y (Y=1-5?))

AntConfig: 1,2,4,8 (8, 16)

~30GHz, bandwidth 100MHz x Y (Y=1-10?)

AntConfig: 8,16,32 (32, 64)

Must ensure that node costs and power consumption numbers are ”acceptable”


35pt


partners :

18pt


partners :

Secure WideArea- and

Outdoor-to-Indoor Coverage Add WideArea Capacity Densify the network grid Secure 5G Performance

Baseline as absolute reference:

”5B3M”

LTE R10 2x2 MIMO

M-MIMO on existing site grid

Introduction of street-level

Low Power Nodes (LPNs)

wirelessly backhauled to existing

macro sites

Support orthogonal

requirements w r t:

latency, peak rates, mobility,

power consumption and TCO.

Introduction of UDNs(?)

2016 2020 2025

RAN/BTS Evolution Strategy towards 5G Networks

Final target: to enable a Cost-per-bit and Energy Consumption comparison across different RAN deployment topology- and node realization alternatives


Serving ~10x more data data to ~3x more users seems possible without significantly increasing RAN energy consumption. The cost for this will depend on how the various required nodes are realized; initial/basic assumptions are being developed in a full TCO-analysis.

ISD=198m ISD=131m


35pt


partners :

18pt


partners :

Predominantly LTE

Keeping Macro grid

Adding Spectrum

Carrier Aggregation

Layered RAN - Access

Convergence and Access

Technology specific layers

Service Oriented RAN:

CP/UP split and Slicing

Massive MIMO

Fast sleep/wake up features

Dual/Multi connectivity

Multi-operator shared HotSpots

3GPP specs harmonization for

MMIMO and DMIMO

Smart self-backhauling

mmW access and (self-) backhaul

Dual/Multi Connectivity for mmW

opportunistic access

Multi-operator shared HotArea

(UDN) deployments

DMIMO and MMIMO UDNs with

high mobility support

High level RAN/BTS functionality/solution requirements over “time” 3GPP is right now about to (start) defining ”5G” and its relation(s) to ”4G”

Thank you www.huawei.com

Copyright©2012 Huawei Technologies Co., Ltd. All Rights Reserved. The information in this document may contain predictive statements including, without limitation, statements regarding the future financial and operating results, future product portfolio, new technology, etc. There are a number of factors that could cause actual results and developments to differ materially from those expressed or implied in the predictive statements. Therefore, such information is provided for reference purpose only and constitutes neither an offer nor an acceptance. Huawei may change the information at any time without notice.

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