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Emergency Communication. DUMBO: Digital Ubiquitous Mobile Broadband OLSR. Outline. Disaster Emergency Network Vehicular Communication Available Technologies DUMBO DUMBO 2. Disaster. Natural Tsunami, Nargis, Manmade Terrorist attack, Fire. Disaster (cont…). Consequences:

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emergency communication

Emergency Communication

DUMBO: Digital Ubiquitous Mobile Broadband OLSR

outline
Outline
  • Disaster
  • Emergency Network
  • Vehicular Communication
  • Available Technologies
  • DUMBO
  • DUMBO2
disaster
Disaster
  • Natural
    • Tsunami, Nargis,
  • Manmade
    • Terrorist attack, Fire
disaster cont
Disaster (cont…)
  • Consequences:
    • Huge death
    • Huge wounded
    • Destroy surrounding (roads, buildings)
    • Traditional communication infrastructure becomes inoperable
  • Requirements:
    • Rescue operation
    • Co-ordination between the field worker and command center
    • Emergency medical assistance
emergency network
Emergency Network
  • An emergency network:
    • Fast deployable
    • Without relying on the fixed infrastructure
    • Provide multimedia communication (voice, video, text)
    • Wide network coverage
    • Available network devices (home appliances)
    • Real-time monitoring systems
    • Capable to move the network nodes independently within the network coverage
emergency network cont
Emergency Network (cont…)

Traditional Process: Usually the rescue worker uses walkie talkie while in rescue operation. But it has many demerits:

  • Short range
  • Collisions in communication (everybody uses the same channel)
  • No video support
  • No central monitoring systems to monitor the relative movement of the field worker
vehicular communication
Vehicular Communication
  • Vehicle to Vehicle Communication (V2V)
    • Send and receive information between vehicles to vehicle
  • Vehicle to Infrastructure Communication (V2I)
    • Share information among the vehicles and the fixed infrastructure
available technologies cont
Available Technologies (cont…)
  • TETRA : Terrestrial Trunked Radio
    • Special type of Mobile
    • Walkie Talkie like service
    • Low Throughput
    • Fixed Infrastructure
    • Expensive
dumbo
DUMBO

Use Mobile Ad Hoc Networks (MANET) in an environment where fixed network infrastructure is not available, such as in the case of natural disaster

dumbo 06

IP Star

Satellite

Field

Satellite

Access

IP Star

Uplink

MANET

OLSR

IP Star

Gateway

Field

Satellite

Access

Terrestrial

Internet

MANET

OLSR

PDA

PDA

sensor

Simulated

Head Command

Center (AIT)

Simulated Disaster

Area 1

DUMBO’06

Simulated Disaster

Area 2

dumbo 2
DUMBO 2
  • Interconnectivity between Mobile Ad-hoc Network and Fixed infrastructure
  • Vehicle-to-Vehicle (V2V) communications with mixed vehicle types
  • Vehicle-to-Infrastructure (V2I) Internet-like Gateway
  • A newly revised Emergency Response Multimedia Communication Applications (P2P SIP)
  • Real-time monitoring system for rescue worker’s movement.
outline1
Outline
  • Mobile Ad Hoc Network (MANET)
    • Optimized Link State Routing (OLSR)
  • Easy Disaster Communication (EasyDC)
ieee 802 11
IEEE 802.11

Infrastructured network

Ad hoc network

A

B

C

mobile ad hoc network manet
Mobile Ad-Hoc Network (MANET)
  • Fast deployable
  • Self configuring
  • No need for network infrastructure
  • Moving nodes
  • Multi-hop network
manet example
MANET example
  • B and D as intermediate nodes forward a packet to E
  • Multi-hop network
manet applications
MANET applications
  • Military operations
  • Sensor networks
  • Rescue operations
  • University
  • Conferences
manet characteristics
MANET characteristics
  • Dynamic topology
  • Limited bandwidth
  • Energy constrained operation
  • Limited physical security
manet routing protocol
MANET routing protocol
  • Reactive routing
    • Finding routes when needed (on demand)
  • Proactive routing
    • Maintaining all routes to reachable destinations (table-driven routing)
    • Using continues control messages to set up routes
  • Reactive
  • Low routing overhead
  • High delay of setting up a connection
  • Proactive
  • High routing overhead
  • Low delay of setting up a connection
ad hoc on demand distance vector aodv rfc 3561

RREQ

RREQ

RREQ

RREQ

RREQ

Ad-hoc On-Demand Distance Vector (AODV), RFC 3561
  • Finding routes when needed (on demand)
  • Flooding a route request (RREQ)
ad hoc on demand distance vector aodv rfc 35611

RREP

RREP

RREP

Ad-hoc On-Demand Distance Vector (AODV), RFC 3561
  • Finding routes when needed (on demand)
  • A route reply is unicasted back
optimized link state routing olsr rfc 3626
Optimized Link State Routing (OLSR), RFC 3626
  • A table-driven routing protocol
  • Using MultiPoint Relays (MPRs) to efficiently relay broadcast messages
  • Three main modules
    • Neighbor detection
    • Topology discovery (via MPRs)
    • Route calculation
1 neighbor detection
1. Neighbor detection

HELLO

HELLO

HELLO

neighbor sensing
Neighbor sensing

HELLO

HELLO

Neighbor nodes of B

A

C

D

HELLO

multipoint relay
Multipoint relay
  • Reducing the number of duplicate retransmissions while forwarding a broadcast packet
  • Limit the set of MPRs retransmitting a packet
  • The number of MPRs should be small
multipoint relay selection
Multipoint relay selection
  • Each node selects and maintains its own MPRs
  • “At A, For all two-hop neighbors n there must exist a MPR m so that n can be contacted via m”
multipoint relay selection1
Multipoint relay selection
  • Each node selects and maintains its own MPRs
  • “At A, For all two-hop neighbors n there must exist a MPR m so that n can be contacted via m”
route calculation
Route calculation

Routing of E

Dest. Next hop

A D

B D

C C

D D

B

{A, C, D}

Routing of D

Dest. Next hop

A B

B B

C B

E E

Routing of A

Dest. Next hop

B B

C B

D B

E B

D

{B, E}

olsr implementation
OLSR implementation
  • olsr.org
    • An ad hoc wireless mesh routing daemon
    • Many OS platforms are supported
      • Nokia, iPhone, Mac OS, Linux, Wins
configured olsrd parameters
Configured olsrd parameters
  • HELLO interval
  • HELLO hold
  • TC interval
  • TC hold
  • MID interval
  • MID hold
  • More details no olsrd parameters
    • http://www.olsr.org/docs/olsrd.conf.5.html
reasonable hello interval
Reasonable HELLO interval
  • In RFC 3626
    • HELLO interval = 2s
    • TC interval = 5s
  • The larger HELLO interval, the longer delay of neighbor detection
  • OLSR on a vehicle
    • HELLO interval should be small
communication applications
Communication applications
  • Existing communication applications, VoIP, require centralized servers
  • The centralized architecture is not suitable for MANETs due to mobility
using p2p on manets
Using P2P on MANETs

Operated

Operated

easy disaster communication easydc
Easy Disaster Communication (EasyDC)
  • Providing multimedia communications for an emergency operation
  • Peer-to-peer (P2P) application where no a centralized server is needed
  • Running on OLSR protocol
easydc setup
EasyDC setup

Software setup

1. Install jre 6u6

2. Check the jre by opening command prompt and typing java -version.

Please make sure the version is shown correctly.

3. Install JMF

After that, run JMF Registry and click "Detect Capture Devices"

4. Setup ad hoc mode on wireless interface. Make sure that you use a correct given IP address.

-To run software

Double click MainStartup.bat in EasyDC folder

-To run HQ software CenterStartup.bat

gps location gloc service
GPS Location (GLoc) Service
  • A GPS receiver is connected to each node through Bluetooth.
  • It receives the GPS information i.e. latitude and longitude of the mobile node
  • Sends it to the Map server using DUMBO network.
  • Map the position of all nodes comprising the network and send for better co-ordination and administration.
olsr link monitoring olmon system
OLSR Link Monitoring (OLMon) System

Objectives:

  • Detects active links
  • Monitors traffic flows through different links
  • Provides metrics and statistics dynamically which demonstrates the link quality and system performance .
olsr link monitoring olmon system cont1
OLSR Link Monitoring (OLMon) System (Cont..)

Features:

  • Input parameters
  • Output parameters
  • Sniffer
  • Graph Plot
  • Analysis
olsr link monitoring olmon system cont2
OLSR Link Monitoring (OLMon) System (Cont..)

Input parameters

  • Shows the default OLSR parameters such as HELLO interval, TC interval, Hysteresis threshold limits etc. used for running the protocol.
  • The parameter values can be changed.
olsr link monitoring olmon system cont4
OLSR Link Monitoring (OLMon) System (Cont..)

Output Parameters

  • Run Time Packet Analysis: Shows the list of neighbor nodes, Link failure, Packet loss , Packet loss rate, Delay and Current Node status.
  • Run Time Message Analysis: It shows the list of nodes originating the OLSR message, Message loss, Message Loss rate, Hop Count and Control Overhead corresponding to each originator node.
  • Run Time Average Figures: The section averages the values among all the nodes and shows the final figures at the run time.
olsr link monitoring olmon system cont6
OLSR Link Monitoring (OLMon) System (Cont..)

Sniffer

  • Captures the packets coming to the network interface.
  • Shows the detail information of the packets captured and current performance status.
  • The packet information consists of the time, source node generating packet, packet loss, packet loss rate, hop count, delay within the OLSR packet.
  • Illustrates a broad picture of the packet information useful for user to observe the ongoing performance in detail.
olsr link monitoring olmon system cont8
OLSR Link Monitoring (OLMon) System (Cont..)

Graph

  • This section visualizes the network performance graphically at run time.
  • User can select type of plot interested along with the necessary scale and tick steps.
  • The system can generate different graphs for different parameters like Average Link Failure, Average Packet Loss etc., with respect to time.
slide70

OLSR Link Monitoring (OLMon) System (Cont..)

Analysis

  • Provides the user with the comparative analysis of the ongoing network performance.
  • The criteria for the determination of the traffic level are:
    • High – Above 75% of the highest Traffic Level
    • Average – Between 75% to above 45% of the highest Traffic Level
    • Low – Below or Equal to 45% of the highest Traffic
olsr link monitoring olmon system cont11
OLSR Link Monitoring (OLMon) System (Cont..)

Help

  • This section provides user with the general instruction for operating the system.
  • User can exit from the plug-in by selecting “Exit” in the “File” option in the menu-bar.
  • Besides, “About” option gives the brief information about the plug-in development.
  • On exiting from plug-in, all the related threads are closed and stop the application.
olsr over network oon
OLSR Over Network (OON)
  • Sometimes, MANETs are connected to the Internet
  • We create an overlay network covering both MANETs and the Internet
  • EasyDC can run on top on this overlay network without being modified
oon configuration
OON configuration
  • Only fixed IP nodes exchange OLSR messages