Topics in Internet Research

1
Topics in Internet Research

• Energy-Efficient QoS-based routing protocol for
  Wireless Sensor Networks

FAWAZ SALEEM BOKHARI05030111
2
Wireless Sensor Networks (WSN)

• Special network with large number of nodes
  equipped with processors, sensors and radios
• Limited in power, computational capability and
  memory
• Densely deployed
• Infrastructure-less
• Topology changes very frequently
• Broadcast mode of communication
• May not have global identification

3
Applications of WSN

• Weather Monitoring
• Security and tactical surveillance
• Disaster management
• Military
• Detecting ambient conditions
• And a lot more

4
Node
5
Protocol Stack
6
Physical Layer

• Simple and robust modulation
• Transmission and receiving techniques

Data Link Layer

• Medium Access Control
• Power efficient
• Collision avoidance

7
Network Layer

• Takes care of routing the data provide by the
  transport layer

Transport Layer

• Helps to maintain the flow of data if application
  layer requires it

8
Application Layer

• Depending upon sensing task, different
  application can be built and used in application
  layer

Power Management Plane

• Manages how a sensor node uses its power
• Power level notification
• Turing off the radio

9
Mobility Management Plane

• Detects and registers the movement of sensor
  nodes, so a route back to user is always
  maintained
• Knowing who the neighbor sensor nodes are

Task Management Plane

• Balances and schedules the sensing tasks given to
  a specific region

10
MAC Layer Protocols

• PAMAS
• S-MAC
• T-MAC
• DMAC

11
Network Layer Protocols

• Categories
• Flat routing
• Hierarchical routing
• Location-based routing
• Classification depending upon the protocol
  operation
• Multi-path-based
• Query-based
• Negotiation-based
• QoS-based

12
Network Structure based ProtocolsFlat Routing

• Flooding
• Gossiping
• Sensor Protocols for Information via Negotiation
  (SPIN)
• Directed diffusion

13
Network Structure based ProtocolsHierarchical
Routing

• Low Energy Adaptive Clustering Hierarchy (LEACH)
• Power-Efficient Gathering in Sensor Information
  Systems (PEGASIS)
• Small Minimum Energy Communication Network (SMECN)

14
Network Structure based ProtocolsLocation based
Routing

• Geographic and Energy Aware Routing (GEAR)

15
Proposal

• QoS-based routing
• Sequential Assignment Routing (SAR)
• Design an Energy-Efficient QoS-based routing
  protocol

16

• Q A