We propose efficient mobility management schemes based on pointer forwarding
for wireless mesh networks (WMNs) with the objective to reduce the overall
network traffic incurred by mobility management and packet delivery.
The proposed schemes are per-user-based, i.e., the optimal threshold of the
forwarding chain length that minimizes the overall network traffic is dynamically
determined for each individual mobile user, based on the user’s specific mobility
and service patterns.
We develop analytical models based on stochastic Petri nets to evaluate the
performance of the proposed schemes. We demonstrate that there exists an
optimal threshold of the forwarding chain length, given a set of parameters
characterizing the specific mobility and service patterns of a mobile user.
We also demonstrate that our schemes yield significantly better performance than
schemes that apply a static threshold to all mobile users.
A comparative analysis
shows that our pointer forwarding schemes outperform routing-based mobility
management protocols for WMNs, especially for mobile Internet applications
characterized by large traffic asymmetry for which the downlink packet arrival
rate is much higher than the uplink packet arrival rate.
Mobility management, pointer forwarding, wireless mesh networks, performance
analysis, stochastic Petri net.
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