Date Added: Apr 2011
The traditional centralized load balancing had a relatively low reliability, and the distributed load balancing had a huge overhead. To solve these problems, this paper mapped heterogeneous wireless networks to distributed grids by introducing Resource Management Unit, and then presented a hierarchical semi-centralized architecture for load balancing of heterogeneous wireless networks drawing on the idea of grid in computer networks. The analytical models for the integrated reliability and signaling overhead of the architecture were established. Theoretical analysis and simulation results indicate that the architecture can reduce the signaling overhead and improve the system reliability effectively.