Exploiting BharatNet and WiFi for Secure Operations Devendra Jalihal Dept of EE, IITM, Chennai [email protected]
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
Exploiting BharatNet and WiFi for Secure OperationsDevendra JalihalDept of EE, IITM, [email protected]
Outline
Outline● Can Government agencies exploit widespread
presence of BharatNet for secure operations, increased efficiency and reduced cost?
Outline● Can Government agencies exploit widespread
presence of BharatNet for secure operations, increased efficiency and reduced cost?
● Example from a Police Network
Outline● Can Government agencies exploit widespread
presence of BharatNet for secure operations, increased efficiency and reduced cost?
● Example from a Police Network● Are these ideas applicable to other organisations?
BharatNet Architecture● Connect ALL 2.5 lakh Village Panchayats by high
BW Fiber● Basic architecture: Ring of Rings, for high
availability
BharatNet Architecture● Connect ALL 2.5 lakh Village Panchayats by high
BW Fiber● Basic architecture: Ring of Rings, for high
availability
Police Network (Privately owned, operated)
HQ
UHF
Police Network (Privately owned, operated)
HF, 3-30 MHz, long range, 1000s km
HQ
UHF
Police Network (Privately owned, operated)
HF, 3-30 MHz, long range, 1000s km
VHF, 30-300 MHz, medium rangeInter district by μ-wave links
HQ
UHF
Police Network (Privately owned, operated)
HF, 3-30 MHz, long range, 1000s km
VHF, 30-300 MHz, medium rangeInter district by μ-wave links
UHF, 300 MHz-3 GHz, Short range (city scale)
HQ
UHF
Police Network (Privately owned, operated)
HF, 3-30 MHz, long range, 1000s km
VHF, 30-300 MHz, medium rangeInter district by μ-wave links
UHF, 300 MHz-3 GHz, Short range (city scale)
HQ
● Advantages: Private, Command communication, voice● Disadvantages: Maintenance heavy, expensive, prone to obsolescence,
voice only
UHF
Police Network (Public)
Police Network (Public)
GSM CUG
Police Network (Public)
2000+ Police stn Police HQ
Crime Database
8 Mbps100 Mbps
100 Mbps
INTERNET
GSM CUG
Police Network (Public)
● Advantages: Distributed, Command communication
● Disadvantages: Insecure (data goes on internet), limited Speed, constrained by congestion
2000+ Police stn Police HQ
Crime Database
8 Mbps100 Mbps
100 Mbps
INTERNET
GSM CUG
Can the Police use BharatNet?
● Can it provide high (extremely high) BW and secure means of communication?
● Can the police own and operate the infra?● Can the police augment their communication
repertois without significant outlay? ● Can the Police effectively beat the game of
technological obsolescence?
Proposed Closed Architecture
Proposed Closed Architecture
For long range: HF/VSAT
UHF HQ
HQ to other Districts
Bharatnet fiber provides back bone, high security VPN intranets
and state-wide voice connections
Trunking Radio
Proposed Closed Architecture
INTERNET
For long range: HF/VSAT
UHF HQ
HQ to other Districts
Bharatnet fiber provides back bone, high security VPN intranets
and state-wide voice connections
Trunking Radio
Proposed Closed Architecture
GSM CUG
INTERNET
For long range: HF/VSAT
UHF HQ
HQ to other Districts
Bharatnet fiber provides back bone, high security VPN intranets
and state-wide voice connections
Trunking Radio
Proposed Arch (main components)
Proposed Arch (main components)
● Police lease dark fiber from BharatNet which connects every Police Stn
– Police own and operate the optical switches – Unlimited BW - Multiple VPNs, VC, VoIP,
Proposed Arch (main components)
● Police lease dark fiber from BharatNet which connects every Police Stn
– Police own and operate the optical switches – Unlimited BW - Multiple VPNs, VC, VoIP,
● Extensive deployment of WiFi
– VoIP provides another layer of communication– Will help in gathering evidence
Proposed Arch (main components)
● Police lease dark fiber from BharatNet which connects every Police Stn
– Police own and operate the optical switches – Unlimited BW - Multiple VPNs, VC, VoIP,
● Extensive deployment of WiFi
– VoIP provides another layer of communication– Will help in gathering evidence
● Database access faster and secure
Proposed Arch (main components)
● Police lease dark fiber from BharatNet which connects every Police Stn
– Police own and operate the optical switches – Unlimited BW - Multiple VPNs, VC, VoIP,
● Extensive deployment of WiFi
– VoIP provides another layer of communication– Will help in gathering evidence
● Database access faster and secure● Trunking Systems (DMR/TETRA/P25) to replace VHF as the primary
means of private comm
– Their BS are connected by Bharatnet
Proposed Arch (main components)
● Police lease dark fiber from BharatNet which connects every Police Stn
– Police own and operate the optical switches – Unlimited BW - Multiple VPNs, VC, VoIP,
● Extensive deployment of WiFi
– VoIP provides another layer of communication– Will help in gathering evidence
● Database access faster and secure● Trunking Systems (DMR/TETRA/P25) to replace VHF as the primary means of
private comm
– Their BS are connected by Bharatnet● HF/VSAT for long range
Proposed Heirarchy of Ring ArchitectureLevel 3 : Dist Police Office in ring
Level 2 : Linking Blocks
Leve1: Linking Village Panchayat
Level 3 Fiber Implementation
BS
BS
BSBS
BS
BS
BS
BS
BS
BS
Trunking System
Data base + storage Server
Router + media converter
Call center + user terminal
Mirror site
TNP HQ
● Advantages: ● Backhaul for trunking BSs in each
district● provides uniform numbering scheme ● WiFi Aps in Police Stn enable IP Voice● High BW enables VC, high speed
access to dB● Data Stays inside
● Disadvantages: Main fiber plant owned by some other agency
Strengths• Trunking systems and exchange
systems are robust, digital and need little maintenance
• Data security due to VPN • Multiple modes of communications
such as video conferencing and VoIP
• Police continue to own all communication equipment as before
• Other than GSM CUG
• Orders of magnitude higher bandwidths than what is presently possible
• Communication during congestion and natural calamities
Strengths• Trunking systems and exchange
systems are robust, digital and need little maintenance
• Data security due to VPN • Multiple modes of communications
such as video conferencing and VoIP
• Police continue to own all communication equipment as before
• Other than GSM CUG
• Orders of magnitude higher bandwidths than what is presently possible
• Communication during congestion and natural calamities
Weaknesses• Multiple frequency
bands needs WPC clearance and license fees
• Main fiber plant is owned by other (government) agencies
Example of a Congestion Communication System
Mahamaham Kumbakonam 2016 Test Deployment of WiFi
• 16 Access Points deployed• 5 with 5.8 GHz
backhaul• 6 with fiber backhaul• 5 with direct cables in
control room
Asterisk IP-PBX Sever
PSTN Interface with 30 simultaneous outside calls
8 port Ethernet switch
5GHz backhaul
WiFi Access Point (connected by cable)
WiFi Access Points (connected by 5GHz backhaul)
5GHz backhaul
Network Elements
CSIPSIMPLE
Congestion Comm System
Congestion Comm System● Advantages
– Provides another layer of communication
– High BW – Both voice and data
– Good solution for congestion communication
– Easy to deploy and Low cost
– Provides backhaul to outside world
Congestion Comm System● Advantages
– Provides another layer of communication
– High BW – Both voice and data
– Good solution for congestion communication
– Easy to deploy and Low cost
– Provides backhaul to outside world
● Disadvantage– May suffer from
interference from unamanaged APs
– Needs intelligent management of channels
Summary
Summary● Many organisations (Govt Offices, Banks, ….) have
similar structure– Needs: Communication BW, database access, many
branches, data security– All face the challenge of rapid obsolescence
Summary● Many organisations (Govt Offices, Banks, ….) have
similar structure– Needs: Communication BW, database access, many
branches, data security– All face the challenge of rapid obsolescence
● A combination of BharatNet and WiFi offers a working solution
Related Documents
