QoS Constraint Routing Protocols for Mobile Ad Hoc

1. QoS Constraint Routing Protocols for Mobile Ad Hoc IgliTafaj

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: power=min(path.power, power) • Buffer: path.buffer=hop*path.buffer+buffer/hop+1 • Stability: path.stab=max(path.stab,stab) • Application Layer Metric: • Throughput=total no.of bit*8 (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.