2004 - RW2000 - Technologies- P1 - v1.7

RADWIN 2000 Technology Highlights Part 1

V1.7 Release 2.6.40 LA

Professional Services Manager Mexico & Central America J.Manuel Surez N.

Performance Analysis

10 BT/ 100BaseT / 1000BaseT with auto-negotiation (IEEE 802.3)

Layer 2 Ethernet bridge

Self-learning of up to 1024 MAC address (IEEE 802.1Q)

VLAN transparent (Management VLAN supported)

Latency < 3msec

Retry mechanism for loss-less connection (Fast ARQ)

Support up to 2048 bytes frames (all configurations)

Ethernet Services

RADWIN Training Center 3

TDM (E1/T1) Services

Up to 16xE1/16xT1 interfaces (C-Series, software configurable)

Independent timing per port, Tx and Rx

Standard E1/T1, compliant with ITU-T standards

Unframed E1/T1

BER < 1x10-11 @ sensitivity threshold

Accurate clock recovery mechanism (


Modulation & Throughput @ 20MHz

Notes Sensitivity (dBm) @ BER < 10e-11

(20MHz)

TX power (dBm)

Throughput (Mbps)

Air Rate (Mbps) Modulation

Installation mode -88 25 -- 6.5 BPSK 0.5

Single Mode -86 25 5 13 QPSK 0.5

Single Mode -83 25 7.6 19.5 QPSK 0.75

Single Mode -81 24 10.3 26 16 QAM 0.5

Single Mode -80 21 15.6 39 16 QAM 0.75

Single Mode -72 19 21 52 64 QAM 0.66

Single Mode -70 18 23.6 58.5 64 QAM 0.75

Single Mode -67 18 25.9 65 64 QAM 0.83

Dual Mode -88 25 4.9 13 2X BPSK 0.5

Dual Mode -86 25 10.2 26 2X QPSK 0.5

Dual Mode -83 25 15.5 39 2X QPSK 0.75

Dual Mode -81 24 20.8 52 2X 16 QAM 0.5

Dual Mode -80 21 30.7 78 2X 16 QAM 0.75

Dual Mode -72 19 41.3 104 2X 64 QAM 0.66

Dual Mode -70 18 46.6 117 2X 64 QAM 0.75

Dual Mode -67 18 51.7 130 2X 64 QAM 0.83

MIM

O

MIM

O


Modulation & Throughput @ 40MHz

Notes Sensitivity (dBm) @ BER < 10e-11

(20MHz)

TX power (dBm)

Throughput (Mbps)

Air Rate (Mbps) Modulation

Installation mode -88 25 -- 13 BPSK 0.5

Single Mode -86 25 10 27 QPSK 0.5

Single Mode -83 25 16 40.5 QPSK 0.75

Single Mode -81 24 22 54 16 QAM 0.5

Single Mode -80 21 32 81 16 QAM 0.75

Single Mode -72 19 43 108 64 QAM 0.66

Single Mode -70 18 49 121.5 64 QAM 0.75

Single Mode -67 18 53 135 64 QAM 0.83

Dual Mode -88 25 10 27 2X BPSK 0.5

Dual Mode -86 25 21 54 2X QPSK 0.5

Dual Mode -83 25 32 81 2X QPSK 0.75

Dual Mode -81 24 43 108 2X 16 QAM 0.5

Dual Mode -80 21 64 162 2X 16 QAM 0.75

Dual Mode -72 19 85 216 2X 64 QAM 0.66

Dual Mode -70 18 96 243 2X 64 QAM 0.75

Dual Mode -67 18 100 270 2X 64 QAM 0.83

Radio Technologies

MIMO

MIMO = Multiple Input Multiple Output

Double capacity is carried over a given frequency channel using 2 streams going over

orthogonal paths through dual polarized antenna


Double capacity over a channel using orthogonal paths

MIMO

RX TX

Dual polarized antenna

Dual polarized antenna

Data stream is split to 2 domains

2 streams are merged to form one data streams

RADWIN 2000 C-series support asymmetric ETH throughput up to 200 Mbps Aggregate

The capacity allocation between uplink and downlink traffic is determined

automatically according to actual Ethernet traffic and air interface conditions

User settings determine the uplink / downlink capacity in cases of congestion


Asymmetric Ethernet (C Series)

100% 0

B A

50.0% / 50.0%

Transmission Ratio

With TDM services enabled, the link provides symmetrical throughput up to 100

Mbps full duplex

For HSS installations the uplink / downlink capacity ratio will be fixed (i.e. will not

change automatically) according to the HSS Master configuration

The MIR (Maximum Information Rate ) may be set up to 100 Mbps per direction


Asymmetric Ethernet (C Series)

100% 0

B A

50.0% / 50.0%

Transmission Ratio

In this mode, RADWIN 2000 estimates Ethernet throughput by filling frames over the air to maximum for 30 seconds

Activating this process does not affect service


Estimate ETH Throughput



How?

1. At the main menu, click Maintenance and then click on Estimated Eth. Throughput

2. A confirmation dialog window will appear

3. Click Yes to continue

4. The Ethernet Services & Estimated Throughput window is displayed

5. At the end of 30 seconds, the display reverts to normal



The figures in the graphs relate to the maximum achievable throughput

The Manager considers each side of the link as if it was accommodating the

whole aggregate capacity

When HSS is enabled, the display will show 50% of the maximum available

throughput:

e.g. with RADWIN 2000 C-Series, 40 MHz, we shall see 100Mbps on each side

When HSS is disabled, the Manager will show maximum ratios for each end.

e.g. - with RADWIN 2000 C-Series, 40 MHz, we shall see 198.4Mbps on each

side

Layer 2 Ethernet

RADWIN supports two classification

criteria: 802.1p and DiffServ

Frames towards the air-interface are

mapped into one of 4 Queues (real time, near real time, controlled load, best effort)

according to the classification criteria

Frames are pulled (scheduled) from the

queues toward the air interface

according to priority and a weighted

mechanism

Received Frames

Packet Classification

(802.1p or Diffserv)

Real TimeQueue

Near Real TimeQueue

Controlled LoadQueue

Best EffortQueue

Scheduling

To Air Interface


QoS

Each queue has configurable weight which

is a percentage out of the total link capacity

The user can limit the Maximum

Information Rate (MIR) of each priority

queue

The queue MIR cannot exceed the link MIR

With QoS disabled, all traffic is handled

with the same priority


QoS

Received Frames



Real TimeQueue

Near Real TimeQueue


Best EffortQueue

Scheduling

To Air Interface

Frames are classified to the queues

according to their 802.1p or Diffserv

priority fields

Queue VLAN priority Diffserv DSCP value

Real time 6-7 48-63 Near real time 4-5 32-47 Controlled load

2-3 16-31

Best-effort 0-1 0-15

Received Frames



Real TimeQueue

Near Real TimeQueue


Best EffortQueue

Scheduling

To Air Interface


QoS - Classification

QoS Enable Traffic Prioritizing

High Priority Service

9 8 7 6 5 4 3 2 1

Medium Priority Service Low Priority Service

6 5 4 3 2 1 Output traffic

9 8 3

7 6 2

5 4 1

Medium Priority

Low Priority (Best Effort) 1 6 2 9 8 3

Output traffic

High Priority

First In First Out

Prioritized

Last

Last

Input traffic

Last

6 Data Blocks

6 Data Blocks

BEFORE QOS

AFTER QOS


Enable / disable QoS

Select classification criteria (802.1p or Diffserv)

Mapping of priority levels into 4 Queues

MIR per queue

Weight per queue

(De)select queues (at least two shall be selected)

Membership Tables

Please refer to Radwin PtP VLAN Application Note for a detailed explanation


QoS

Queue in Queue Allow same customer to use VLANs internally in their transport network while mixing

traffic from clients that are already VLAN-tagged

Service Provider

Backbone

Customer A Branch LAN

Customer A HQ LAN

Customer B Branch LAN

Customer B HQ LAN

QinQ ID 500

QinQ ID 600

SWITCH SWITCH

SWITCH SWITCH

PtP PtP

PtP PtP

Soft switch

VoIP DB Host

VLAN ID 100 VLAN ID 100 VLAN ID 200 VLAN ID 200

Soft switch

VoIP DB Host

VLAN ID 100 VLAN ID 100 VLAN ID 200 VLAN ID 200


RADWIN Protection Mechanism Performance Fast service restoration time within 50 ms Ensures loop free networks Provides a better alternative to Spanning Tree Protocols (STP/RSTP) Properaitry protocol that meets G.8032 standard performance

Ensures High Service Availability

Ensures Service Providers SLA

Cost effective solution No need expensive external switches (No Cisco Tax) Leverage existing radios with a software upgrade, use existing IDU-Cs

Simplify Deployment

Reduces spectrum and mast density No need for multiple collocated links at the same Node site

Products: Supported by IDU-C and New IDU-E Supported by all ODUs product lines that support both IDU and PoE devices


Ethernet Protection Ring Highlights

IDU save external switch

RADWIN IDU RADWIN IDU

BEFO

RE 1

+1

3rd party Switch 3rd party Switch

AFTE

R 1

+1

Use external switch


ETH Protection Ring in 1+1 Topology

Ethernet Protection through Ring

Corporate access users

Private networks

with a demand for high

availability

A

D C

B

PtP

PtP

PtP

PtP

Branch Or Node

A

D C

B

PtP

PtP

PtP

PtP

Branch Or Node

Link failure protection is achieved through linking users in a Ring

Assure high service availability for high-end applications Switchover < 1 sec , faster than standard Ring

A User

B User

C User D

User E User

PtP

PtP

PtP

PtP PtP

PtP

Carriers Network


ODU

ODU

ODU

ODU

Radio Protected Link

(RPL) / Radio Link site

consists of 2 ODUs:

1.ODU + IDU-C / new IDU-E

2.ODU + PoE


Ethernet Protection Ring

ODU

ODU

ODU

ODU

Operator Main Node A

Node A

Node B

Node C

Radio Link

Radio Protected Link

Radi

o Li

nk

ODU

ODU

ODU

ODU


Ethernet Protection Ring State 1

ODU

ODU

ODU

ODU


Node A

Node B

Node C

RPL

RL

RPM RL

RL

Normal operation ETH

traffic runs in the ring, but

does not pass through the

RPL, which is blocked.

The RPL does however,

broadcast RPM frames

through the ring

BLOCKED!

ODU

ODU

ODU

ODU



ODU

ODU

ODU

ODU


Node A

Node B

Node C

RPL

RL

RPM RL

RL

Ring Link Down - The RPL

detects a link-down

condition by the non-

arrival of an RPM

Frames.

It remains blocked for the

Minimum time for failure

detection

BLOCKED!

X X

ODU

ODU

ODU

ODU



ODU

ODU

ODU

ODU


Node A

Node B

Node C

RPL

RL

RPM RL

RL

Ring Link Down, RPL

unblocked - The RPL

unblocks for Ethernet

traffic after the

Minimum time for

failure detection

expires and no RPM

frame has been received

UNBLOCKED!

X X

ODU

ODU

ODU

ODU



ODU

ODU

ODU

ODU


Node A

Node B

Node C

RPL

RL

RPM RL

RL

Ring Link restored, but

still blocked - The RL

restored but remain

blocks for the Minimum

time for recovery to

avoid intermediate loop

UNBLOCKED!

BLOCKED!

ODU

ODU

ODU

ODU



ODU

ODU

ODU

ODU


Node A

Node B

Node C

RPL

RL

RPM RL

RL

Ring Link recovered, RPL

blocked The RPL link is

blocked for Ethernet

traffic and the RL

unblocks for Ethernet

traffic.

The ring is back to

normal operation UNBLOCKED!

BLOCKED!

Hub Synchronization System(s)

Unique burst synchronization technique

Synchronizes Tx and Rx timing for all

units at a hub site

Eliminates collocation TDD interference

Enables multi point-to-point

architecture


Hub Synchronization System (HSS)

Hub Sync Master - The Hub Sync Master (HSM) generates the pulses that synchronize the timing of

the Hub Sync Clients (HSC).

Hub Sync Client Continue Transmission In the event that the unit loses synchronization with the Hub Sync Master, the link

remains active.

Hub Sync ClientDisable Transmission In the event that the unit loses synchronization with the Hub Sync Master, the link

is dropped until the synchronization pulses resume. This setting prevents the unit

from causing interference.


HSS Architecture

HSS Limitations

Use HSS cable (not IDU-ODU) cable.

Sum of all HSS cables

External interferences in collocated environment

Verify a physical separation of minimum 3 meters (use the Maximum) between a RADWIN unit and any other collocated radio unit on the site

Use the maximum frequency gap between the units

Use the quality bar in the bottom to select the best frequency channel as clear as possible from interferences (changing band is recommended)

Install the collected links with different polarization between them

Decrease the Tx power of a link in order to minimize the collocated interferences (Use the LBC to check if possible)


GPS Synchronization System (GSS)

Collocated ODUs are synced using HSS to avoid

mutual interference

Sync between hub sites is required in dense

and large scale networks

Synchronization between sites is enabled

using GPS timing

Reduces overall network interference

Improve capacity, spectrum efficiency and

deployment flexibility


The GSU receives a synch signal from the GPS once per

second

It acts as a HSM unit

The GSU is connected to the HSS Unit using a standard

HSS cable. It synchronizes the transmission timing of

multiple Hub-Sites to the same clock source thus

eliminating mutual interference

When the GSU doesnt receive a synchronization signal

from the GPS for 30 seconds, it moves automatically to

Self-Generation mode and acts as a regular HSM unit,

until the GPS recovers

P/N - RW-9924-001X - Including antenna, RF cable, PoE

device and HSS cable

GSS Functionality

GPS Antenna

RF Cable

HSS Cable

CAT-5e Cable

HSS Unit

PoE device


Thank You!

Documents

2004 - RW2000 - Technologies- P1 - v1.7