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QoS Constraint Routing Protocols for Mobile Ad Hoc

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QoS Constraint Routing Protocols for Mobile Ad Hoc Igli Tafaj Introduction Which is the aim of this paper ? What is MANET? Classification of Multicast Routing Protocol? – PowerPoint PPT presentation

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Title: QoS Constraint Routing Protocols for Mobile Ad Hoc


1
QoS Constraint Routing Protocols for Mobile Ad Hoc
  • Igli Tafaj

2
Introduction
  • Which is the aim of this paper?
  • What is MANET?
  • Classification of Multicast Routing Protocol?
  • What is MAODV?

3
Some QoS Multicast Routing Protocols
  • QAMNet
  • QMR
  • QMRP
  • AQM

4
The dynamism of Routing Protocols
TAG REQ_PKT FLAG_FW
  • Path selection depend on
  • Stability of neighbours node
  • Power level (batery)
  • Buffer Level (overhead)

Each forwarding packet should have a reply, in
which could determine the appropriate selected
path
5
MAODV-Extension
  • Route Discovery
  • Path Selection
  • Hop Count
  • Power Level
  • Buffer Level
  • Stability Level
  • Cost
  • Class

6
L2QoS
  • The selection of path based on QoS metrics
  • The metrics depends entirely on MAC Sub layer
    (Layer_2)
  • On these metrics supported MAODV
  • MAODV Extended based on some featuring of
    Network and Application metrics mixed
  • Network Metrics depends on maximum hop count
    metric
  • Application Metrics depends on cost of some
    concave and additive metrics like Bandwidth,
    Delay etc

7
Experiment Envirement
  • Operating System Linux Red Hat 9.0
  • NS2 version ns-allinone-2.26
  • The simulation environment is
  • 1) Area 1500 x 300 meters
  • 2) Number of nodes 60
  • 3) Simulation duration 900 seconds
  • 4) Number of repetitions 4
  • 5) Physical/Mac Layer IEEE 802.11 at 2Mbps, 250
    meter transmission range

8
Experiment Envirement
  • 6) Mobility model random waypoint model with no
    pause time, and node movement speed 0m/s, 1m/s or
    20m/s.
  • 7) Each sender sends 2 multicast data packets
    per second with each packet 256 bytes long

9
Experiment Envirement
  • 8) All receivers join a single multicast group
    at the beginning of the simulation, and the
    senders start sending data 30 seconds later.
    After 900 seconds, all senders stop transmitting
    data
  • 9) Only multicast traffic exists in the
    simulation.

10
Implementation
  • Network Layer Metrics
  • Power powermin(path.power, power)
  • Buffer path.bufferhoppath.bufferbuffer/hop1
  • Stability path.stabmax(path.stab,stab)
  • Application Layer Metric
  • Throughputtotal no.of bit8 (from the Start
    time-End time)

11
Simulation Graphs
Average end-to-end delay vs speed
PDR vs Speed
12
Simulation Graphs
PDR vs Nr of Nodes
Average end-to-end delay vs speed
13
Simulation Graphs
Throughput vs Nr of Nodes
PDR vs Nr of Nodes
14
Conclusions
  • QoS-MAODV, the multicast routing protocol is the
    extension of MAODV with the QoS support
  • The network layer metrics is involved in the path
    discovery to find a QoS path to the destination.
  • The path with the highest stability is the
    preferred path. If more than one path is found
    the destination node selected the path with the
    highest power level.

15
Conclusions
  • Regarding the application requirements, if the
    application is delay sensitive then the path with
    the minimum delay is chosen
  • For the application with throughput constrained
    the path with maximum bandwidth is selected
  • With no constraint any path is chosen by the
    destination.

16
Conclusions
  • The protocol balanced the routing load and also
    minimized the consumption of resources.
  • As a future work, different number of flows can
    be analyzed with different network scenarios.
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