Optimizing Handovers in NextGeneration Wireless Heterogeneous Networks

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Optimizing Handovers in Next-Generation Wireless
Heterogeneous Networks

• Presenter Xiaohuan (Iris) Yan
• Supervisors Nallasamy Mani, Ahmet Sekercioglu

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Towards the NGN!
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Towards the NGN!

• Integration of various types of network
  technologies
• Higher speed
• Lower cost
• Innovative services

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Problem Statement
Cellular network or WLAN?
WLAN
AP
Cellular Network
BS
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Problem Statement

• Traditional methods always hand over to the WLAN
• Is that always beneficial?

• Waste of network resource
• Handover failure
• Connection breakdown

Scenario B
Scenario A

• Low cost
• High bandwidth

WLAN
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Solution
Network Parameter Collection
Received Signal Strength Collection
Distance Threshold (L) Calculation
Traveling Distance (d) Prediction
d gt L?
YES
NO
Remain staying in the cellular network
Hand over to the WLAN
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Results

• Analysis results
• Simulation results

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The End

• Thank you!