Area　of　Interest　Management,　which　essence　is　a　communication　filter,　is　an　important　component　to　improve　scalability　of　CVE.　With　some　special　design　considerations　presented,　this　paper　proposed　a　new　approach　called　GLAOIM　which　is　based　on　2D　grid　with　layered-structure.　It　is　divided　into　two　phases:　message　possible-influence　area　determination　and　message　receiver　determination.　Whether　a　user　could　receive　update　message　from　a　sender　depends　on　the　result　of　coactions　of　spatial　relations　and　corresponding　message　transmission　characteristics.　Hence,　2D-Grid　is　applied　to　localize　spatial　position　and　solve　spatial　correlated　problems　quickly　while　layered　structure　is　applied　to　combine　all　kinds　of　media＇s　transmission　characteristics,　rules,　etc.　Moreover,　GLAOIM　introduces　a　new　indicator　Interest　Visibility　and　provides　an　interior-outward　traverse　to　calculate　each　grid＇s　Interest　Visibility　value　to　determine　receivers.　Also,　it　provides　a　generic　solution　with　better　extensibility　for　messages　with　different　kinds　of　media.　©　Springer-Verlag　Berlin　Heidelberg　2005.