Design of Mobility Management Schemes Based on Pointer Forwarding for Wireless Mesh Networks

摘要

The proposed scheme introduces efficient mobility management schemes based on pointer forwarding for wireless mesh networks (WMNs). The main objective of this is to reduce the overall network traffic incurred by mobility management and packet delivery. The proposed schemes are per-user-based where it calculate optimal threshold of the forwarding chain length that minimizes the overall network traffic. This value is calculated for each individual mobile user, based on the user's specific mobility and service patterns. New model is design based on stochastic Petri nets to evaluate the performance of the proposed schemes. It shows 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. The proposed schemes yield significantly better performance than schemes that apply a static threshold to all mobile users. The pointer forwarding schemes is efficient especially for which the downlink packet arrival rate is much higher than the uplink packet arrival rate.