Filter-based method to disseminate situation information

A filter-based method is presented to disseminate situation information,with respect to the characteristics of situation infor-mation and the requirement on how to disseminate it.The method is based on filters of privileges and publish/subscribe predicates,within this special method,the situation information what the users receive could act in accord with the requirements and interests of the user.After giving the detail content of the particular method,the analysis and evaluation on the efficiency is listed.