microwave technologies for the mobile transition to ip

PETER CROY, SENIOR NETWORK ARCHITECT

AVIAT NETWORKS

MICROWAVE TECHNOLOGIES

FOR THE MOBILE TRANSITION TO IP

1

Agenda

• Introducing Aviat Networks

• Wireless Broadband Today

• Traffic Impact on Backhaul Networks

• Network Architecture Evolution

• Microwave Radio Technologies

22 Telecom Ljubljana 9 Nov 2010AVIAT NETWORKS |

About Aviat Networks

3

$479millionFY10 Revenue

500,000systems installed

around the world

185Patents

1Largest

Independent

Provider of

Wireless

Transmission

Solutions

Solid Balance

Sheet &

Financial

Liquidity

50years of

providing wireless

communications

260Mobile networks

served around

the world

4thLargest Provider of

Next Generation

wireless

solutions

6thLargest Provider

of wireless

solutions globally

Source: Company data and Skylight Research, Worldwide Microwave Radio Quarterly Market Share Report, Calendar Year 4Q 2009 & Full Year 2009

Telecom Ljubljana 9 Nov 2010AVIAT NETWORKS |

Global Company Footprint

Telecom Ljubljana 9 Nov 20104 AVIAT NETWORKS |

Corporate HQ

and R&D Center

California, US

International

Headquarters

Singapore

European

R&D Center

Ljubljana, SI

APAC

R&D Center

Wellington, NZ

Expanding the Scope of Transmission Applications


Mobile

Networks Digital

Oilfield

Smart

Grid

Public

Safety

Enterprise

Smart

ClassroomHealthcare

First/Last Mile

Backhaul

Metro/

Aggregation

Core

Transport

Rural

Broadband

WiMAX LICENSEDLICENSE

EXEMPTE-BAND

TYPICAL

APPLICATIONS

The Aviat Advantage


• The assurance of working with the largest independent Specialist

focused on wireless transport systems

• Significant presence and support across the world

• Broad, global customer base

• Early Leader in Wireless IP transmission

• All the global resources and stability that smaller specialists cannot match,

yet in a corporate size that you can easily work with

• The experience, foresight and technology to anticipate market needs and

deliver innovative and individualized solutions

WIRELESS BROADBAND TODAY

Will there ever be a limit to our demand for capacity?


Growth of Wireless Data Downloads

• VoIP & IM have significant growth rate in all regions

• HTTP streaming/video will outgrow all other traffic (e.g. YouTube)

Source: Allot Mobile Trends Global Mobile Broadband Traffic Report, H2/2009


USER TRAFFIC IMPACT

ON BACKHAUL NETWORKS

Backhaul for Wireless Broadband

Is backhaul network evolution only about more capacity?- Traffic management and routing

- QoS handling

- Service monitoring & Fault finding/fixing

Comparing wireless broadband technologies- HSPA and WiMAX have similar backhaul network requirements

- LTE R8 demands more capacity (2-5x) and quality (30ms delay) from backhaul

- What is hosted on a single backhaul network – e.g. wholesale provider?

Further considerations for backhaul networks- More new sites required as user numbers and data volume grows

- Need to simplify trouble-shooting and network management

- Rising regulatory demands (e.g. site sharing, scarcity of frequency bands)

Telecom Ljubljana 9 Nov 201011 AVIAT NETWORKS |11

Wireless Broadband Backhaul Network Requirements

3G HSPA (R6) WiMAX LTE (R8)

Backhaul transport IP/Ethernet (or ATM) IP/Ethernet IP/Ethernet

Site capacity 10 to 30+ Mbit/s 10 to 30+ Mbit/s 30 to 100+ Mbit/s

Synchronization TDM (from E1/DS1) GPS via Packet or GPS

Packet Quality ATM or Eth CoS IP QoS IP QoS & Eth CoS

Max. RAN packet delay (round trip)

N/A N/A 30 ms

Inter-cell site IP connectivity

N/A R8 interface X2 interface


CORE

Core Networks

WiMAX

R99/R4

LTE EPC

www

PSTN

Backhaul Network: User Traffic Impacts

RADIO ACCESS NETWORK

IP/MPLS

Copper Lines

RNC

S-GW

ASN

IP/Ethernet

BACKHAUL

HSPA

WiMAX

LTE

Microwave

Fiber

DEVICES

BSC

13

User Download

Traffic Volume

Main Traffic

Congestion Points

User Upload Traffic Volume


NETWORK ARCHITECTURE EVOLUTION

LTE RAN Architecture (3GPP R8)

• LTE radio base stations (eNB) connect to

multiple core nodes via the S1 interface

– User plane to S-GW (S1-U) and

– Control plane to MME (S1-MME)

• eNB connects directly to EPC core nodes

– HSPA needs a radio node controller

• New: Direct user session handover

interface specified between eNBs (X2)

• eNB learns neighbours via Automatic

Neighbor Relations (ANR) protocol

• Up to 20 neighbours connected via X2

• Backhaul must ensure IP connectivity

between eNB neighbours for X2

IP/Ethernet

backhaul only!

Evolved Packet

Core (EPC)


WiMAX RAN Architecture (WiMAX Forum)

• R6 interface backhauls traffic from base stations to the ASN gateway

• R3 interface backhauls traffic from ASN gateway to core network (CSN)

• CSN hosts core services and connectivity to Internet and other

providers

16

Mobile

Station

Base

Station

Base

Station

ASN

Gateway

AAA

Billing

Gateway

to

other CSNR5

CSN - Connectivity

Service Network

R1R

6

R

6

R8

R3IP/Ethernet

R2

IP/Ethernet

R4

Other

ASN

ASN – Access

service network


CORE

Core Networks

WiMAX

R99/R4

LTE EPC

www

PSTN

Backhaul Network: Transport Options

RADIO ACCESS NETWORK

IP/MPLS

Copper Lines

RNC

S-GW

ASN

IP/Ethernet

BACKHAUL

HSPA

WiMAX

LTE

Microwave

Fiber

DEVICES

BSC

17

Can not meet backhaul

capacity demands✗

✓

✓Meets backhaul

capacity demands


Wireless Broadband Backhaul Networks

18

ASN WiMAX


MICROWAVE RADIO TECHNOLOGIES

Modern Microwave Transport Systems

Nodal concept for multiple links per site

Split-mount Indoor & Outdoor unit or

all-indoor with antenna waveguide

• Outdoor RFU for 6 to 38 GHz links

• Indoor RFU for 6 to 11 GHz trunks

Protected & scalable transmission

• 1+0, 1+1, 2+0, dual-polarization, LAG, …

• Up to 1Gbit/s (depending on RF channel)

• Modulation up to 256QAM; 512/1024QAM coming

• Typical link availability of up to 99.999%

Link distances from <1km up to >50km


Millimeter Wave Band Systems

• Radio systems operating above 40 GHz

- Radio & antenna unit are ‘All-outdoor’

• 70/80 GHz band is ‘lightly’ licensed

- Better rain attenuation

- 5 GHz of bandwidth available

• Very good capacity scalability

- ‘Fiber performance’ for > 1Gbit/s

- Large bandwidth allows dense networks

• Link availability is distance limited

- 99.99x% for up to 1.5km; 3km possible


Microwave is Ready for Backhaul Network Expansion

Requirements Fiber Microwave

LTE site capacity (3 sectors) 30 – 100+ Mbit/s 30 – 100+ Mbit/s

Link capacity out of metro aggregation sites

>1000 Mbit/s <2000 Mbit/s

Distance between sites Up to 30 km Up to 30 km

Time to establish link months to year days to weeks

Link availability up to 99.999% up to 99.999%

Cost factor: Capex / Opex (Very) High / Medium Medium / Low


Scaling Mobile Networks with Microwave Radios

• Operators are looking for options to scale their backhaul networks:

- Business model: Backhaul outsourcing to wholesale network provider

- Transport Media: Fiber, Microwave, (copper)

- Traffic payload: Mix of TDM+Ethernet for legacy, IP/Ethernet for broadband

- Clock synchronization: GPS, TDM, SyncEthernet and/or packet-based 1588v2

• Microwave technology is evolving to meet all networking needs as an

integrated access gateway and multi-traffic aggregation node

• More capacity through coding and modulation gains, new frequencies

• Full suite of Carrier Ethernet features: VLAN, OAM, link aggregation, …

• Perfect complement to Fiber plant rollout projects (shorten lead times)


THANK YOU!

TIME FOR QUESTIONS…

[email protected]

microwave technologies for the mobile transition to ip

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