A network collaboration framework based on High Level Architecture and Multi Agent System is introduced in this paper.Some required properties about network collaboration are presented.A network collaboration model and its algorithm HOAM are proposed based on HLA ownership and agent multicast.The shortage of being not satisfied with message causal order in the current implementation RTI of HLA is solved.Causality constraint supported by HOAM algorithm is proved.A comparative analysis is made in terms of the performance of HOAM and LICRA algorithm.It shows that HOAM

as a simple pessimistic algorithm

has the approximate same performance with LICRA

as a complex optimistic algorithm.