10-04-2014, 01:23 PM
DSR The Dynamic Source Routing Protocol
Dynamic Source Routing.ppt (Size: 784.5 KB / Downloads: 485)
Introduction
DSR is designed for MANETs
DSR doesn’t need any network infrastructures
Loop free routing
No routing information in the intermediate nodes
Nodes may easily cache this routing information for future use
Assumption for the simulation
All nodes in the MANETs are willing to partecipate fully in the DSR protocol.
The diameter of the MANET will often be small (5 to 10 hops).
The speed with which node moves, is moderate with respect to the packet transmission latency.
Nodes may be able to enable “promiscuous” receive mode on their wireless network interface.
DSR operate with uni-directional link.
Each node selects a single IP address.
Basic DSR Route Maintenance
Each node transmitting the packet is responsible for confirming that the packet has been received by next hop.
Acknowledgement
By lower layer protocol MAC
By DSR-specific software ack
Route errore message
Conclusion
Excellent performance for routing in multi-hop ad hoc.
Very low routing overhead.
Able to deliver almost all originated data packets, even with rapid motion of all nodes.