BY

Ayshath Sufeera

VIII SEM

Introduction

Objectives

Challenges

Architecture of IPN

Working of Terrestrial Internet

Working of IPN

Terrestrial v/s Celestial Communication

Applications

Conclusion

IPN is a conceived computer network in space,

consisting of a set of network nodes which can

communicate with each other.

IPN is a technical name for ”anywhere and

everywhere internet”.

It aims to provide Internet-like services over the

entire solar system.

Extremely long propagation delay

Asymmetrical forward and reverse Link

capacities

High link error rates for radio-frequency (RF) communication channels

Intermittent link connectivity

Lack of fixed communication infrastructure

Effects of planetary distances on the signal

strength and the protocol design

Power, mass, size, and cost constraints for

communication hardware and protocol design

InterPlanetary Backbone Network

Communication among Earth, outer-space

planets, moons, satellites, relay stations, etc.

InterPlanetary External Network

Space crafts flying in groups in deep space

between planets, clusters of sensor nodes, and

groups of space stations.

Planetary Network

Planetary Satellite Network

Satellites circling the planets provides relay services,

communication & navigation services to surface elements.

Includes links between orbiting satellites & links between

satellite and surface elements.

Planetary Surface Network

Links between high power surface elements (rovers,

landers, etc). Surface elements that cannot directly

talk to satellites, organized in an ad hoc manner.

Network

IP

Network

IP

Phys 1

Link 1 Link 1

Phys 1 Phys 2

Link 2

Phys 2

Link 2

Phys 3

Link 3

App

App

App App

App

App

Network

IP

Transport

TCP

Network

IP

Transport

TCP

Phys 3

Link 3

Subnet 1 Subnet 2 Subnet 3

Network of internets spanning dissimilar environments

Bundle

App

App

App App

App

App

Bundle Bundle

Phys 1

Transport a

Network a

Link 1 Link 1

Phys 1 Phys 2

Link 2

Network a

Phys 3

Link 3

Network b

Transport b

Phys 2

Link 2

Network a

Transport a

Phys 3

Link 3

Network b

Transport b

Internet a Internet b

Working of IPN

Communicatio

n

parameters

Wired

terrestrial

Mobile ad hoc

NET/MANET/

Wireless

IPN/Celestial/

Wireless

Power

availability

Not critical Important Very crucial

SNR Within

acceptable

range

Low Very low

Error rate Within

acceptable

range

Medium High

Infrastructure Defined/fixed Deployable Deployable

Communication

parameters

Wired terrestrial Mobile ad hoc

NET/MANET/

Wireless

IPN/Celestial/

Wireless

Medium Copper/fiber RF/IR Primarily free

space, RF

Delay in seconds <1 10 to 10000

seconds

Deployment cost Low Medium Very high

Operational cost Low Medium Very high

“Non-chatty” message-oriented communications

Essential in long delay environments.

Store-and-forward between nodes

Essential when no contemporaneous end-to-end path exists.

Highly desirable to free resources at less-advantaged “leaf nodes”.

Routing algorithms cognizant of scheduled connectivity

Essential to accommodate scheduled connectivity.

Highly desirable to be able to adaptively exploit alternate routes.

Use transport and network technologies

appropriate to the environment

Essential to support combination of IP and non-IP networks.

Essential to be able to support incremental deployment of new

technologies.

Time-Insensitive Scientific Data Delivery:

-Large volume of scientific data to be collected from planets and moons.

Time-Sensitive Scientific Data Delivery:

-Audio and visual information about the local environment to Earth, in-situ controlling robots, or eventually in-situ astronauts.

Mission Status Telemetry:

- Delivery of the status and the health report of the mission, spacecraft, or the landed vehicles to the mission center or other nodes.

Command and Control:

-Closed-loop command and control of the in-situ mission elements.

With the increasing pace of space

exploration, Earth will distribute large

numbers of robotic vehicles, landers, and

possibly even humans, to asteroids and other

planets in the coming decades.

Possible future missions include

lander/rover/orbiter sets, sample return

missions, aircraft communicating with

orbiters, and outposts of humans or

computers remotely operating rovers.

THANK YOU…!!!!