Download - Mobility Management in Wireless Mesh Networks Utilizing Location Routing and Pointer Forwarding
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Mobility Management in Wireless Mesh Networks Utilizing Location Routing and Pointer Forwarding
Bing Wang
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Content
Background & Problem Formulation Wireless Mesh Network Mobility management
Proposed Scheme: LMMesh Performance Model – SPN Model
Parameterization Performance Analysis Conclusion
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Wireless Mesh Network
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Mobility management
Search: find a mobile user’s current location Update: update a mobile user’s location Location information
Gateway: location database Each MR: routing table
Handoff Management Location Management
Routing-based Pointer forwarding
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Routing-Based Method
Basic Idea Mobility management is integrated with routing Embed location information into regular packet
Good No additional signaling cost using regular packet to do
location update Bad
Location information may be out-of-date for idle client
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Pointer Forwarding Method
K=2
Anchor MR
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LMMesh
Objective Dynamically minimize network cost on a per-user basis
Methodology Integration of both routing-based and pointer
forwarding method. Feature
Dynamically set the threshold K for the forwarding chain length
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Location Search for Internet Sessions
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Location Search for Intranet Sessions
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Performance Model
The SPN model for LMMesh
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Performance Model
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Performance Model
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Performance Model
6 7
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Performance Model
5
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Performance Analysis
Define service-to-mobility ratio (SMR)
𝑠𝑚𝑟=𝜆𝜎
Average packet arrival rate
Mobility rate
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Performance Analysis
Total communication cost incurred per time unit
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Total communication cost vs. K
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Optimal K value vs. SMR
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Total communication cost vs. ζ
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Average forwarding chain length vs. ζ
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Total communication cost vs. active ratio
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Optimal K value vs. active ratio
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Total communication cost vs. SMR
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Average forwarding chain length vs. SMR
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Total communication cost vs. ζ
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Average forwarding chain length vs. ζ
Total communication cost v.s. ζ
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Total communication cost vs. active ratio
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Total communication cost vs. 1/λ and1/μ
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Conclusion LMMesh scheme combines routing-based method
and pointer forwarding method to minimize overall communication cost of location management.
A SPN model is used to model the scheme and to perform evaluation.
Simulation results show the LMMesh scheme outperforms other location management schemes.
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Thank You