28-05-2014, 03:01 PM
Router protocol on wireless sensor network
Router protocol .ppt (Size: 303 KB / Downloads: 57)
The definition of WSN
Definition[1]:
consist of large amount of sensor nodes
Multi-hop, self-organize
wireless communication
cooperative sensing, collection, process
Send to observe.
The difference between WSN and Ad hoc (1/2)[1]
The number of nodes
Sensor nodes are densely deployed
Sensor nodes are prone to failures
The topology of a sensor network changes very frequently
Gossiping
A slightly enhanced version of flooding where the receiving node sends the packet to a randomly selected neighbor which picks another neighbor to forward the packet to and so on.
Advantage: avoid the implosion
Drawback: Transmission delay
SPIN(1/3)[1]
A family of adaptive protocols called Sensor Protocols for Information via Negotiation
assign a high-level name to completely describe their collected data (called meta-data)
Use thee types of messages ADV (advertisement), REQ (request) and DATA
PEGASIS(1/2)[1]
An enhancement over the LEACH protocol is a near optimal chain-based protocol
increase the lifetime of each node by using collaborative techniques.
allow only local coordination between nodes and the bandwidth consumed in communication is reduced
Conclusion
based on the network structure divide three categories: flat, hierarchical, and location-based routing protocols.
The advantages and disadvantages of each routing technique
In general hierarchical routing are outperform than flat routing