Vector Time Management Based on Topology Information for HLA/RTI

Aimed to reduce the overheads using the Time Management (TM) in HLA based distributed simulations, the TM based on publish-subscribe topology information is investigated. The condition under which the message may be received before its causal predecessor is firstly analyzed. And then, the TM algorithms using vector clock are put forward, in which the condition is judged before the clock is comparing. The algorithms will reduce overheads in many distributed simulation systems where topology information is static and reasonably sparse.