An efficient vertical handoff mechanism

1. An Efficient Vertical handoff Mechanism for
future Mobile Network

2. OBJECTIVE
Compare the occurrence of vertical Handoff by
using Fuzzy Vertical Handoff decision algorithm
and RSS algorithms

3. ABSTRACT
• Handoff is the mechanism that transfers an
ongoing call from one cell to another as a user
moves through the coverage area of a cellular
system.
• Improper Handoff’s is mainly avoided by
taking Fuzzy decisions.

4. TERMS RELATED TO PROJECT
• Handoff
• Vertical Handoff.
• Relative signal Strength
• Fuzzy Logic

5. HANDOFF MANAGEMENT

6. Existing Methods
RELATIVE SIGNAL STRENGTH(RSS)
The performance of the handoff algorithm is based on Relative
Signal Strength (RSS) metrics. In which the signal strength of
neighbouring Base Stations are compared and handoff is enabled.
Drawbacks:
Too many unnecessary Handoffs.
Call drops occur frequently.
Ping-Pong Effect

7. PROPOSED SYSTEM
Vertical handoff algorithm is used which checks
“Fuzzy vertical handoff decision (FVHD)”
value.
By Observing FVHD Value, unnecessary
Handoff decisions can be drastically reduced.

8. FUZZY-LOGIC
Fuzzy logic used as Multiple Attribute Decision
Making (MADM) method is not only to evaluate
and combine many parameters at the same time
but also to deal with some imprecise
information.

9. PARAMETER REQUIRED FOR HANDOFF
The required parameters for fuzzy based
handoff mechanism are:
1. Received Signal Strength
2. Bandwidth
3. Speed

10. ADVANTAGES OF FVHD
 Decrease the Probability of call drop.
 Better QoS
 Avoid Unnecessary Handoff.

11. CONCLUSION
For future wireless communication, vertical handoff should be
very efficient. For that our proposed algorithm will provide high
accuracy.