Mobile Back Haul

8/3/2019 Mobile Back Haul

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Cellula

Efficient Backhaul and Transmission Solutions

for Mobile Networks

Innovative Access Solutions


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ba

ck

ha

ul

Radio Access Network

PDH/SDH/SONET/ATM/DSL/IP

Transport Network

AGGREGATION

TRAFFICOPTIMIZATION

Mobile Core Network

MSC

BSCRNC

RATE &PROTOCOLCONVERSIONVOICE

TRUNKING

BaseStations

BTS/Node-B

BTS/Node-B

TDM/ATM/IPBackbone

MSC

MSC

Improve 2G and 3G Network OperatingEfficiencies While Cutting Opex and Capexin the Access Infrastructure

decision is the need to support many

different mobile standards simultaneou

while enabling access over a variety of

cellular backhaul networks. The transit

from 2G circuit-switched networks (TD

to 3G packet switched networks (initia

ATM, eventually Gigabit Ethernet/IP/MP

raises new challenges. Mobile network

operators must now take into account

demand for the increased bandwidth

capacity and the complexities of a

converged voice and data network.

Backhaul is one of the major contributors

to the high cost of building out and running

a mobile network. This is true whether the

mobile operator owns the transport links

or leases lines from a local carrier.

It also applies if the operator is deploying

a dedicated transport segment for 3G or

planning to integrate several generations

onto the same platform.

Considering the huge impact that backhaul

has on operating expenses (Opex) and

capital expenses (Capex), mobile network

operators are wise to review their cellular

backhaul strategies before making further

network investments. Complicating any


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futureThere is no single blueprint or off-the-shelf

solution for designing a cellular backhaul

network. Too many factors figure into the

equation: radio interfaces, networking

technologies, available services, and

migration plans as well as budgetary

constraints and revenue expectations.

Mobile network operators should therefore

strive for maximum flexibility when choosing

their cellular backhaul options.

In particular, they must be attuned to the

rapid evolution of cellular standards and

rollout of new packet transport technology.

These two developments are challenging

mobile operators with the need to invest

in efficient backhaul solutions that will be

applicable in the years to come.

RAD offers mobile network operators

a wide range of products supporting

current and future backhaul network

interfaces, protocols and technologies.

These can ensure the lowest cost and

most efficient solution for any cellular

backhaul network scenario.

Future Proof


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PDH/SDH/SONET Transport

Leveraging TDM-based networks PDH and SDH/SONET for cellular backhaul afford

large degree of investment protection for operators of private networks. In addition t

carrying legacy TDM streams, the TDM-based network is also suitable for ATM. Thus

same TDM transport infrastructure may be used (for migration to UMTS in the initial

phase). TDM-based networks can deliver significant cost reductions providing that th

multiple traffic streams are aggregated wisely. Aggregation of traffic invariably leads

lower operating expenses. This holds true even for outlying areas, accompanying low

density traffic flows. RAD offers a wide range of multiservice access concentrators th

support aggregation of TDM traffic as well as channelized ATM for more efficient utilizat

of the SDH/SONET infrastructure.

Optimux-1551 / Optimux-1553STM-1/OC-3 High Capacity Terminal Multiplexers

Optimux-1551 and Optimux-1553 terminal multiplexers deliver traditional PDH

and ATM (IMA) services over existing SDH/SONET networks. They combine the high

capacity associated with SDH/SONET add-drop multiplexers (ADMs) with the simplicity

and low cost of a terminal multiplexer, significantly reducing operating and capital

expenses (Opex and Capex).

TDM aggregation and the channelized approach

ggregatioMultiple Service Aggregation


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ACE-3100 / ACE-3200Broadband Aggregation for Cellular

Traffic

Multiservice aggregation units optimized

for cellular backhaul, the ACE family of

products allows efficient integration of

native ATM (UTMS) and TDM (GSM) over

the same backbone both PDH/SDH and

ATM networks, and in the future

Ethernet/IP/MPLS networks. It can also

support IP. The ACE family reduces backhaul

bandwidth using statistical multiplexing of

ATM traffic.

ATM Transport

3GPP specifications define the Radio Access Network elements as ATM. The ATM protocol

can cope with the multiple technologies of various mobile generations and handle different

traffic types with great efficiency. This is due to ATMs built-in Quality of Service (QoS)

capabilities, which offer traffic prioritization and service differentiation as well as traffic

engineering capabilities. All in all, mobile operators have greater ability to manage network

operations and reduce their operating expenses. This extends to integration of 2G and

3G traffic flows, and also applies to supporting a future packet-based mobile access

network since ATM can efficiently map Ethernet/IP over its core.

Reduced CapEx

Aggregation lowers the price of SDH or ATM edge switch modules (by replacing the E1

modules with higher speed ports). At the same time it saves the number of switch ports

and provides efficient use of broadband equipment by having more aggregated traffic per

device.

The solution nicely applies to 2G/2.5G TDM and provides investment protection as it is

ready for future traffic types.

Reduced OpEx

Additional savings are realized by aggregating more traffic onto the same transport link

through statistical ATM multiplexing.

ATM efficiently handles multiple traffic types:

Delay sensitive voice, video, etc.

Non-delay sensitive IP, Internet surfing, etc.

End-to-end monitoring and QoS assurance are inherent features of ATM network devices.

Applicable for various mobile generations 2G/2.5G/3G/xG (Ethernet, IP)


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SNMobile network planners looking for a

comprehensive solution encompassing

future developments will take a good look

at the packet switched option. First, many

mobile vendors are already in the process

of designing radio access elements with

Ethernet interfaces. Second, Metro Ethernet

transport networks are mushrooming. Thus

the trend is clearly toward a packetized

network environment to handle 3Gs cellular

traffic. Transporting TDM over Ethernet/IPis made possible by deploying RADs IPmux

product line, which implements RADs

patented TDMoIP and TDMoMPLS

technologies. This device conveys TDM

circuits, mainly voice connections, over

packet-based networks. In the case of

cellular backhaul, TDMoIP/MPLS technologies

apply nicely as they are transparent to the

underlying traffic. Unlike VoIP, which requires

2G/2.5G Traffic over PSN

Backhaul over Packet Switched Networks(PSN) Ethernet, IP/MPLS

Transparent transmission of mobile traffic and signaling using TDMoIP

translation of signaling, TDMoIP and

TDMoMPLS provide a transport tunnel acr

the statistical packet network without

distortion. Using RADs TDMoIP gatewa

the mobile network operator can aggreg

traffic from GSM base stations and conn

them over the packet switched networ

the BSC. The operator benefits from co

reductions associated with Ethernet/IP

transport as well as from the

implementation of a future-proofinfrastructure. Reducing backhaul

transmission costs by using lower cost

packet switched networks

(Ethernet/IP/MPLS) with TDMoIP technol

enables traffic and signaling to be

transmitted transparently to avoid

interworking and interoperability issue

As such TDMoIP fits both GSM and CDM

traffic.


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Synchronization and clock recovery

The major technical challenge for legacy emulation over PSNs is clock recovery. While TDM

networks inherently deliver timing along with the data, and even ATM networks provide

a physical layer clock reference, asynchronous PSNs do not transfer any timing information

whatsoever.

By using advanced clock recovery algorithms, TDMoIP gateways recover the clock,

transported over the packet network, achieving the desired timing accuracy and complying

with ITU-T G.823 and G.824 specifications in the presence of packet delay variation and

packet loss.

IPmux-11 / IPmux-14Compact TDMoIP Customer Premises

Gateways

The IPmux-11 and IPmux-14 TDMoIP

gateways are optimally designed to meet

the requirements of small customer

premises sites. Both products deliver E1/T1

and Ethernet traffic from their user ports

to their network ports while ensuring strict

priority for the TDMoIP traffic over the

network link.

Gmux-2000Central Office TDMoIP Gateway

The Gmux-2000 is a compact, cost-effective,

modular TDMoIP gateway that provides a

high capacity central office solution for

transporting multiple E1/T1 links over IP,

Ethernet and MPLS-based networks.


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Cost Reduction of Inter-MSC Connectivity

Inter-MSC (E channel) trunking is one of

the main contributors to the cost of running

a cellular operation. Typically, hundreds of

long haul links are used to transport traffic

between voice switches, in meshed, star

or mixed network topologies. Reducing the

number of links translates into immediate

Vmux-2100Voice Trunking Gateway

RADs Vmux-2100 voice trunking gateway

reduces leased line costs and increases the

efficiency of the IP network. Vmux-2100

compresses up to 16 full E1/T1 lines

(496/384 voice channels) over a single

E1/T1, serial or IP link, enabling enterprises,

mobile operators and service providers to

save costs by leasing fewer lines to transport

their voice payloads.

cost savings, adding directly to the mobile

operators bottom line. Because the payload

of inter-MSC transmission is voice traffic,

the simplest and easiest way to realize this

reduction is by compressing the amount of

voice traversing the network using standard

voice compression algorithms.

RADs Vmux Compressed Voice System u

powerful standardized voice processing

technology to compress a full E1/T1 circ

down to 128 kbps, or 16 full E1/T1 line

and associated signaling down to a sin

E1/T1 circuit over TDM or IP/Ethernet lin

Voice compression dramatically reduces bandwidth required over expensive links

Voice Trunking


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Optimization of A-bis Backhaul Links

The base station system (BSS) in any given

GSM network is comprised of a large number

of base stations (BTS) linked to base station

controllers (BSC) over an A-bis interface.

The A-bis interface transports signaling

protocols as well as compressed voice.

Because further compression of the voice

traffic is not applicable, the best way to

reduce bandwidth is to optimize the A-bis

Vmux-400GSM A-bis Optimization Gateway

The Vmux-400 GSM A-bis optimization

gateway is a standalone device,

complementing RADs Vmux voice

compression products, which enables cellular

operators to lower backhaul costs across

their Radio Access Network.

A-bis Protocol Optimization

protocol running over the radio access

network (RAN).

Compressed A-bis traffic can be optimized

by eliminating redundant silence and idle

frames, resulting in more efficient use of

backhaul links and reducing the bandwidth

required over leased lines, satellite links

and microwave.

RADs Vmux-400 A-bis Protocol Optimization

Gateway not only streamlines the A-bis

data flow but also reduces the number of

E1 trunks required for BTS-BSC connectivity.

Alternatively it enables connectivity over

Ethernet links. Average savings reach 50%

and more.

The excess leased line bandwidth can befreed up for 3G traffic.

A-bis optimization saves backhaul bandwidth


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DSLMobile Backhaul over DSL (DSLAM-based)infrastructure

ATM networks are often complemented in the Last Mile by DSL networks. This means t

the access network is based on SHDSL or ADSL and DSLAMs. Many service providers

interested in using this popular and ubiquitous infrastructure to reduce Last Mile backhcosts. RADs integrated access devices (IADs) enable mobile network operators to lever

the existing DSLAM infrastructure for GSM and UMTS backhaul. The same infrastructur

can also be used for delivering Ethernet services to corporate and enterprise custome

LA-110ATM-Based IADs

RADs Link Access (LA) family of ATM

integrated access devices (IADs) enables

carriers to converge multiple services, such

as voice, LAN and data, as well as 2G/2.5G

TDM and 3G ATM traffic over a DSL access

line, using the existing ATM network and

DSLAMs. This improves network utilization

and eliminates the need to invest in new

infrastructure, thereby achieving increased

profitability. Based on ATM, the IADs

guarantee Quality of Service (QoS) and

end-to-end management up to the

customer premises.

DSL Transport

Suitable for GSM/GPRS as well as UMTS backhauling


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Integrating Control and Management Datainto BTS trafficCellular operators may cut their transport

costs by reducing the number of access

links. This can be achieved by integrating

the BTS traffic with the control and data

traffic over the same E1/T1 transport link,

avoiding the use of an additional data link.

RADs FCD-IP is a drop and insert access

router, which allows using the

spare/available bandwidth in the

transmission link for additional data.

Reduce Costs of Signaling Monitoring and Billing

Benefits:

Implementing remote management

for high system uptime, while

reducing Opex

Generating additional revenue

streams with new services utilizing

the same transport infrastructure

i.e., WiFi

Cellular operators constantly perform

transport network performance monitoring.

Grooming the signaling information reduces

the number of transport links. Efficient

transport of the signaling information to a

central location can also reduce the number

of protocol analyzers, resulting in further

cost savings.

Dedicated access device for base station management applications

Cost-effective grooming of timeslots for centralized network management

RADs DXC cross connects are perfect for

this application in terms of functionality,

size and cost and can be easily co-located

with RAN equipment.


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Local Offices

Brazil

RAD do Brasil Ltda.

Ferreira de Souza, 107 - Vila Olmpia

So Paulo - SP 04544-100

Brazil

Tel: 55-11-3045-2523

Fax: 55-11-3045-3257

email: [email protected]

www.radbr.com.br

China

RAD China (Beijing)

Grand Pacific Building, Suite 530

No. 8, Guanghua RoadBeijing 100026, China

Tel: 86-10-65816677

Fax: 86-10-65810588


RAD China (Shanghai)

Unit 11, 16/F, Central Plaza

227 Huangpi Road N.

Shanghai 200003, China

Tel: 86-21-63758691/2

Fax: 86-21-63758693


www.raddata.com.cn

France

RAD France

Immeuble l'Europen

98 alle des Champs-Elyses91042 Evry cdex, France

Tel: 33-1-60 87 85 00

Fax: 33-1-60 87 85 01


www.rad-france.fr

Germany

RAD Data Communications GmbH

Otto-Hahn-Str. 28-30

85521 Ottobrunn-Reimerling

Germany

Tel: 49-89-665927-0

Fax: 49-89-665927-77


www.rad-data.de

Japan

RAD Japan K.K.

Bureau Toranomon 10F

2-7-16 Toranomon, Minato-ku

Tokyo, JapanTel: 81-3-5251 3651

Fax: 81-3-5251 3652


www.raddata.co.jp

Russia

RAD Data Communications Ltd.

17, Skakovaya St.

Entrance 7, Office 3301

Moscow, Russia

Tel: 7-095-945-0940

Fax: 7-095-945-5077


www.rad.ru

United Kingdom

RAD Data Communications Ltd. (UK)

6 Fortuna Court, Calleva ParkAldermaston, Berkshire RG7 8UB

England

Tel: 44-1189-820900

Fax: 44-1189-812600


www.raddata.co.uk

International Headquarters

RAD Data Communications Ltd.

24 Raoul Wallenberg Street

Tel Aviv 69719, Israel

Tel: 972-3-6458181

Fax: 972-3-6498250


www.rad.com

North America Headquarters

RAD Data Communications, Inc.

900 Corporate Drive

Mahwah, NJ 07430, USA

Tel: 1-201-529-1100

Toll free: 1-800-444-7234Fax: 1-201-529-5777


www.radusa.com

Regional Offices

Far East

RAD Far East Ltd.

Suite A, 26/F, One Capital Place

18 Luard Rd., Wanchai

Hong Kong, China

Tel: 852-25270101

Fax: 852-25284761


Latin America

RAD Amrica Latina S.A.

Viamonte 1345-3 Piso "G"

1053 Buenos Aires, ArgentinaTel: 54-11-43714000

Fax: 54-11-43710734


http://rad-espanol.com

Oceania

RAD Australia Pty. Ltd.

Level 2, 14 Queens Rd.

Melbourne, Victoria 3004 Australia

Tel: 61-3-9820-2575

Fax: 61-3-9866-7566


www.raddata.com.au

The RAD name, logo, logotype, TDMoIP, TDMoIP Driven, and Optimux are registered trademarks of RAD Data Communications Ltd. ACE, Gmux, IPmVmux are trademarks of RAD Data Communications Ltd. 2005 RAD Data Communications Ltd. Specifications are subject to change without prior notiAll i ht d C t l b 802307 V i 02/05

www.rad.comwww.rad-cellular.com

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Mobile Back Haul