Research on a new data distribution strategy for DDM

In the distributed interactive simulation based on HLA/RTI, a key problem is how to establish information exchange and delivery mechanism among federates effectively to meet the requirements of system scalability. This paper discusses the basic data filtering mechanism of RTI1.3, then a new data distribution strategy is proposed: this algorithm computes region matching using grid-based method firstly, then it allocates multicast groups based on publisher dynamically. The simulation result show that the strategy proposed could reduce complexity of region matching and make use of multicast groups effectively.