Product Presentation

LinkSat Bandwidth Efficiency Solutions

• Bandwidth Optimization – LinkIP– LinkShrink - data compression engine– LinkCast –efficient dynamic routing IP transport– Routed MultiDestination – mesh networking

network architecture• Bandwidth Management– Scanned Channel Assigned Networking (SCAN)– Real time remote spectral analysis– Uses LinkIP as service platform

5 Layers of Bandwidth Savings

What is LinkIP?• Highly integrated link optimization and bandwidth

management solution for satellite networks• Multi application, multi-protocol LAN to WAN

router• Interfaces with a variety of devices– Serial interface with satellite modems– Ethernet interface with local network equipment– E-1 interface for telephony applications

• Bandwidth savings achieved via:– LinkShrink - integrated data compression engine– LinkCast - multipoint dynamic routing over satellite– SCAN bandwidth manager

LinkIP Features• Advanced IP router adapted for satellite environment• Bandwidth efficient multi-application platform• Combines multiple satellite modulators and demodulators to

form a unified interface• Supports Synchronous, Asynchronous, E1, T1, OC1-2-3, FR , ATM

and other data interfaces• Supports digital video Interfaces (ASI, LVDS, HSSI) • Integrated compression and encryption of selected WAN or LAN

ports• Integrated multi application software control system (audio,

telephony, video, C&C, DB mirroring, etc)• Works within any network topology – Star, full mesh, partial

mesh, point-to-point• Interfaces with all types of SCPC satellite modems• Integrated monitor and control of satellite modems• Overlays into existing legacy networks

Where LinkSat Fits Into the IP Stack:

Layers 1.5, 2, & 3

LinkIP v3 Edge• 1U Chassis in 1, 2, and 4 WAN port configurations

LinkIP v3 Core• 2U chassis w/ 4, 8, 12, and 16 WAN port configurations

LinkShrink Data Compression• LinkSat’s proprietary lossless, low latency data

compression engine• Compresses packet headers and payload• Multiple compression engines run simultaneously on

LinkIP: low latency & zero latency payload compression engines run in parallel

• Makes data compressibility decisions automatically• Processes packets based on packet characteristics• Compression decisions based on any combination of QoS,

ToS, IP protocol, UDP port, and/or TCP port• Compression ratio achieved depends on compressibility

of data; VoIP can typically be compressed 30-60%• Compression can be configured per LinkIP WAN or LAN

port and can be independently configured on each port• Outperforms all other competitors’ compression solutions

LinkIP Advanced Routing• High performance, high throughput wire speed router• Based on Linux Advanced Routing and Traffic Control (LARTC)• 10/100/1000 Ethernet ports• Dynamic routing

– OSPF , BGP, RIP v1 & v2 / ISIS and other protocols supported– LinkCast - Unique addressing scheme enables dynamic routing in satellite

multi-destination networks• Policy routing

– Bandwidth control mechanism for sharing bandwidth amongst different routes– Prioritizes traffic by type, source, destination, port number, and custom

tagging• Traffic Shaping

– QoS / ToS– Differentiated Services (DiffServ)

• Router egress queue used as controlled buffer by SCAN bandwidth manager

LinkCast Dynamic Routing

• LinkIP’s unique layer 1.5 transport protocol enables dynamic routing within RMD architecture

• Multiple layer 2.5 point-to-point links are shared over each broadcast carrier

• OSPF used as interior gateway protocol, and BGP used as exterior gateway protocol

• Allows automatic rerouting of traffic if a route fails• Easy network configuration – simply add new routes into

local LinkIP and OPSF/BGP updates network routing tables• Works in concert with LinkShrink compression

Routed Multi-Destination (RMD) Network Architecture

• LinkSat’s unique, highly efficient networking scheme• Allows both MESH and STAR network configurations• Single outbound carrier transmitted from each site

– Outbound packets for entire network aggregated onto one carrier– 10-20% bandwidth savings realized through statistical multiplexing of

outbound IP traffic– Single transmit carrier - no intermod products = smaller PA’s

• Multiple receive paths– Multiple demodulators at each site, each tuned to an outbound carrier from

another site– Enables full or partial mesh networking– LinkIP filters and routes packets at receive sites

• LinkCast - unique addressing scheme enables dynamic routing in RMD networks without Ethernet overhead

Routed Multi-Destination Meshed Trunking

Full Mesh Spectrum

• One outbound carrier per site

• One modulator and three demodulators at each site

• LinkIP packet filtering - routes packets bound for its LAN and discards the rest

Routed Multi-Destination STAR

RMD STAR Spectrum

• Hub and spoke network• Single outbound carrier

from hub• SCPC return channels from

remotes• Partial mesh with addition

of demod at remote

SCAN• Scanned Channel Assigned Networking• LinkSat’s Patented bandwidth manager (US Patent #

7,376,418)• CS-FDMA-CD - Carrier Sense-Frequency Division Multiple

Access-Collision Detection• Every remote site in network has its own SCAN bandwidth

manager • Uses real time spectral analysis of space segment channels

to determine when and where to transmit and when to receive a demand assigned carrier

• Utilizes same technique for transmit and receive traffic• Satellite effectively becomes an Ethernet switch in the sky

SCAN Features• Gives each network node its own “eyes” to watch network spectral

activity• Advantages of both DAMA and TDMA in a single bandwidth manager• Distributed intelligence: no hub or central network manager needed• Enables single hop remote-to-remote full mesh communications• Fast circuit set-up times – measured in milliseconds• Each site autonomously makes its own bandwidth acquisition decisions• No hub intervention or control channel required for remote bandwidth

access – faster, more reliable• Can be provisioned as a complete network solution or as an overlay to

existing networks• LinkIP provides modem interface and control

SCAN Advantages• Supports all network architectures – Star, partial-mesh,

full-mesh• Bandwidth-on-demand up to 155 mb/s (with use of

external modems)• Bandwidth allocation is demand-driven by network users

rather than using pre-assigned slots• Channelized bandwidth scheme allows for easy addition

and subtraction of channels to optimize the balance between bandwidth cost and network congestion

• Lower network hardware and software license costs vs. incumbent technology (TDMA and DAMA) for small to medium sized networks

• Allows full satellite network automation• Ideal for bandwidth-on-demand applications

SCAN Spectrum Analyzer• Monitors satellite spectrum in real time• Analyzer utilizes latest DSP FFT technology• Form factor of analyzer is PCI-e PCB• Performs on-board processing of spectral data for SCAN

bandwidth manager• Detects spectral density, occupied bandwidth and carrier power• Processes 125 MHz of bandwidth data in a single sweep; can

process 500 MHz in <5 milliseconds• Can be self contained in its own 1U chassis• Can be integrated into LinkXX router PCI-e slot• Integrated spectrum analyzer GUI

SCAN Channel Map

• SCAN spectrum analyzer can resolve both spectral density and occupied bandwidth

• Allowable channels within a bandwidth segment are defined by network operator

• Spectrum can be further sub-divided in separate layers with different channel schemes, allowing fine granularity

• LinkIP determines carrier size needed based on incoming data ToS and satellite channels available

SCAN Spectrum Analyzer GUI Screen Shot

Bandwidth Access Techniques Comparison

PARAMETER SCPC FDMA TDMA DAMA SCANBandwidth allocation type Frequency Time Time & freq Time & freqBandwidth allocation methodology Static & fixed Deterministic

by NMSDeterministic by NMS

Probabilistic by remote site

Bandwidth on demand No, fixed cxrs No, fixed TS Yes, w/ hub Yes, hublessCentralized controller (Hub) No Yes Yes NoDistributed network management No No No YesBandwidth allocation by remotes No No No YesControl / signaling channel No Yes Yes NoReal time remote spectral analysis No No No YesBandwidth management overhead None High Medium NoneVariable sized circuits No No Yes YesCircuit set-up/ resize time None 250-500ms 500ms-7s 250-500msDeterminant of circuit size Fixed @ peak

trafficToS Allocated by NMS

ToS allocated by NMS

QoS/ToS by availability

Proprietary modem / IDU No Yes Yes NoDynamic bandwidth allocation No Yes No YesEfficient mesh networking support No No No Yes

Channel Access Methods: SCAN is Unique

CHANNEL ACCESS METHODS / MULTIPLE ACCESS PROTOCOLS

CHANNEL BASED

FDMA OFDMA, WDMA, SC-FDMA

TDMA MF-TDMA, STDMA

CDMA W-CDMA, TD-CDMA, OFHMA

SDMA HC-SDMA

PDMA

PAMA

PACKET BASED

Collision Recovery ALOHA, Slotted ALOHA, R-ALOHA

Collision Avoidance CSMA, CSMA/CD, CSMA/CA, MACA

Collision Free Token Ring, Token Bus

CHANNEL & PACKET BASED SCAN CS-FDMA/CD

LinkIP Applications & Markets:

Satellite Operators• Shared platform for value added & teleport services• Opportunity to change business model – sell

Mbits/sec or CBR & ABR instead of MHz• Optimization of existing networks on full satellites– Allows expanded throughput for existing customers– frees up bandwidth for new customers

• Bandwidth defragmentation on full transponders• SCAN is perfect platform for bandwidth-on-demand

and ad-hoc services

LinkIP Applications & Markets:

Satellite Service Providers• Ideal for multimedia services – transports voice,

data, video, Internet, Intranet, email on single platform

• Multiple customer / network services on single platform

• Optimization of existing networks– lower OpEx = higher profit margins– Allows expansion of services on full satellites

• SCAN enables offering of bandwidth on demand and ad hoc services

LinkIP Applications & Markets:

Private Networks• Energy exploration and mining operations

• Native IP transport handles multimedia services well• Packet prioritization and security capabilities are big

advantage• SCAN is ideal for multi site sharing of occasional use big

pipes for large file data uploads• Overlay for existing SCPC networks

• Doubles data throughput using existing assets• OpEx savings: Typical CapEx payback periods of 3 to 6

months• Highly efficient IP routing and transport allows full dynamic

routing and mesh connectivity

LinkIP Applications & Markets:

Cellular Backhaul• Allows of 2G, 3G and 4G transport on a single platform• Highly efficient mesh and partial mesh connectivity for high

capacity and trunk circuits• Seamlessly piggyback ISP and interoffice traffic on backhaul

network• QoS / ToS enables highly granular prioritization of signaling

and VoIP packets• RMD architecture allows high throughput and minimal latency• Higher efficiency / lower overhead vs TDMA systems• SCAN is ideal for terrestrial network backup / emergency

restoration

LinkIP Applications & Markets:

SCADA• Low cost version of LinkIP available for RTU sites• Allows easy and economical overlay replacement of existing

frame / cell relay networks• Easy and low cast way of converting legacy networks to IP• RMD takes advantage of inherent broadcast capability of

satellites• Low cost hub redundancy – small incremental cost to add

backup hub at secondary site• Allows easy addition of VoIP services to RTU sites if needed

THANK YOU

From the LinkSat Management TeamPlease visit our website, www.linksat.com